US20050164839A1 - Cushioning treadmill - Google Patents

Abstract

The present invention relates to exercise apparatuses. In more particular the present invention relates to a self-adjusting treadmill having a moveable console and a self-adjusting cushioning assembly. According to one aspect of the present invention, the moveable console and the self-adjusting cushioning assembly of the treadmill automatically adjust based on user parameters. The user parameters can be input by the user or automatically detected when the user steps on the treadmill by the movable console and/or the cushioning mechanisms. For example, in one embodiment, when the user steps on the treadmill, the self-adjusting cushioning assembly detects the weight of the user and automatically adjusts the amount of cushioning to accommodate the weight of the user.

Description

BACKGROUND OF THE INVENTION
• 1. The Field of the Invention
• The present invention relates to exercise apparatuses. In particular the present invention relates to a self-adjusting treadmill having a movable console and/or a self adjusting cushioning assembly.
• 2. The Relevant Technology
• Exercise treadmills have long been a mainstay of the home and institutional exercise equipment market. One advantage of exercise treadmills is that they decrease the wear on a user's joints when the user is running or walking, as opposed to walking on a street, trail, or other hard and/or uneven surface. Exercise treadmills having adjustable features that allow tailoring of the exercise experience to an individual user have become more popular in recent years.
• Exercise treadmills typically utilize a console having user interfaces to allow a user to view exercise program information and input or select different exercise program information or features. Such consoles typically allow a user some degree of interactivity and tailoring of treadmill features including speed, displayed information, and exercise program duration. The height of such consoles is typically set at an intermediate height so as to be usable by most users. However, the intermediate height of the console may not be optimal for many of the users who will utilize the treadmill. Manipulation of the controls, while possible for many users, may not be well tailored to any actual user of the treadmill. Additionally, the height of the console may not comport with a unusually tall or unusually short user.
• Another feature utilized with exercise treadmills are cushioning mechanisms. Cushioning mechanisms in treadmills provide alleviation from the impact experienced during user exercise. A variety of different types of cushioning mechanisms are available, ranging from elastomeric members placed between the deck and the frame of a treadmill to more complex mechanisms that involve adjustability of the amount of cushioning provided.
• One drawback of many existing cushioning systems is that they are designed primarily to enable adjustment before or after a given exercise routine. Such systems can be difficult, if not impractical, to adjust during the course of the exercise routine. As a result it may not be possible to tailor the amount of cushioning to different users or to variable intensities experienced during a workout. For example, a user who begins exercising more intensely during a particular exercise routine may require more cushioning than the user would if the user were walking. In addition, a desirable amount of cushioning for one user, may not be suitable for another user.
BRIEF SUMMARY OF THE INVENTION
• The present invention relates to exercise apparatuses. In more particular the present invention relates to a self-adjusting treadmill having a moveable console and a self-adjusting cushioning assembly. According to one aspect of the present invention, the moveable console and the self-adjusting cushioning assembly of the treadmill automatically adjust based on user parameters when the user steps on the treadmill. The user parameters can be input by the user or automatically detected by the movable console and/or the cushioning mechanism. For example, in one embodiment, when the user stands on the treadmill, the console detects the height of the user and automatically raises or lowers the console to tailor the positioning of the console relative to the height of the user. In another embodiment, when the user steps on the treadmill, the self-adjusting cushioning assembly detects the weight of the user and automatically adjusts the amount of cushioning provided to accommodate the weight of the user.
• According to one aspect of the present invention, the moveable console includes a height sensor and a console height adjustment mechanism. The height sensor utilizes a light source, such as a laser, infrared (IR), or other source of light to determine the height of the user. Then the console height adjustment mechanism adjusts the height of the console such that the height of the console is tailored to the height of the user. In one embodiment, the console starts in a default position at its uppermost position. When of the user steps on the treadmill, the height sensors are automatically activated and light is emitted from the height sensor. The angle of the light corresponds with a desired placement of the console relative to the height of the user. Where the height sensor detects little or no reflection of light from the user, the console height adjustment mechanism begins to lower the console. The height of the user is detected when the console is lowered to a position in which the light emitted from the height sensor contacts and reflects from the user. Based on the angle of the light emitted from the height sensor, the height of the user can be determined. Once the height of the user is detected the console height adjustment mechanism discontinues further downward movement of the console. This is because the console is in a desired height relative to the sensed height of the user. According to another embodiment of the present invention, the console starts at a default lowest position and is raised until reflection of the light is no longer detected.
• The cushioning assembly is utilized in connection with a deck of the treadbase of treadmill. The cushioning assembly is adapted to absorb the impact of a user exercising on the treadbase. The cushioning assembly provides a variable amount of cushioning, thus allowing the deck to move a greater or lesser amount when the user is exercising on the treadbase. According to one aspect of the present invention, once the user steps on the treadbase a deflection sensor assembly of the cushioning assembly automatically detects the weight of the user. Based on the sensed weight of the user, the cushioning assembly is automatically adjusted to provide a desired amount of cushioning based on the weight of the user.
• According to one embodiment of the present invention, a user can select a desired amount of cushioning. In this embodiment, the weight of the user is factored in with the selected amount of cushioning desired and the cushioning assembly is adjusted to provide the desired amount of cushioning based on the weight of the user.
• These and other objects and features of the present invention will become more fully apparent from the following description and appended claims, or may be learned by the practice of the invention as set forth hereinafter.
BRIEF DESCRIPTION OF THE DRAWINGS
• To further clarify the above and other advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
• FIG. 1 is a perspective view of the self-adjusting treadmill illustrating the configuration of the console.
• FIG. 2A is a side view of the self-adjusting treadmill with the console positioned at a lower height corresponding with the height of the user exercising on the self-adjusting treadmill.
• FIG. 2B is a side view of the self-adjusting treadmill illustrating the console at a higher position corresponding with the height of the user exercising on the self-adjusting treadmill.
• FIG. 3 is a perspective view of the console of the self-adjusting treadmill illustrating components of the console including the height sensor.
• FIG. 4 is a front view of the height sensor of the console.
• FIG. 5 is a cut-away view of the console height adjustment mechanism of the console.
• FIG. 6 is a flow diagram illustrating a method of utilizing a self-adjusting console.
• FIG. 7 is a side view of the self-adjusting treadmill illustrating the cushioning assembly according to one aspect of the present invention.
• FIG. 8 is an internal view of the tread base illustrating the cushioning assembly utilized in connection with the self-adjusting treadmill.
• FIG. 9 is a bottom view of the self-adjusting treadmill illustrating the adjustment rod and cushioning adjustment motor utilized to control adjustment of the cushioning assembly of the self-adjusting treadmill.
• FIG. 10 is a functional block diagram illustrating a system for controlling adjustment of the cushioning assembly in connection with the self-adjusting treadmill.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
• The present invention relates to exercise apparatuses. In more particular the present invention relates to a self-adjusting treadmill having a moveable console and a self-adjusting cushioning assembly. According to one aspect of the present invention, the moveable console and the self-adjusting cushioning assembly of the treadmill automatically adjust based on user parameters. The user parameters can be input by the user or automatically detected when the user is positioned on the tread base. For example, in one embodiment, when the user stands on the treadmill, the console detects the height of the user and is automatically raised or lowered to tailor the positioning of the console relative to the height of the user. In another embodiment, when the user stands on the treadmill, the self-adjusting cushioning assembly detects the weight of the user and automatically adjusts the amount of cushioning to accommodate the weight of the user.
• FIG. 1 illustrates atreadmill10 utilized according to one embodiment of the present invention. In the illustrated embodiment,treadmill10 is a self-adjusting treadmill having one or more features which detect user parameters and which automatically adjust one or more components of the treadmill based on the sensed user parameters. Examples of user parameters include, but are not limited to, the user's weight, height, body mass index, body fat percentage, height of one or more body features, heart rate, and the like. A variety of types of user parameters can be utilized in a variety of manners without departing from the scope and spirit of the present invention. For example, the height of the user can be utilized to set the height of a console of the treadmill. In another example, the weight of the user is utilized to set the amount of the cushioning of the treadmill.
• In the illustrated embodiment,treadmill10 comprises aframe20, aconsole30, adrive motor assembly40, and atread base50.Frame20 is coupled to other components oftreadmill10.Frame20 provides stability totreadmill10 when a user is exercising thereon. Additionally,frame20 provides a mechanism to secure the components oftreadmill10 and to provide the desired configuration oftreadmill10.Console30 is coupled to an upper portion offrame20.Console30 provides a user interface which allows a user to view information regarding an exercise routine being performed, select different exercise program variables, view parameters of the treadmill, and any of a variety of other features that can enhance the user's overall workout experience.Console30 can include control circuitry to regulate operation of other components of the treadmill.
• Drivemotor assembly40 is coupled to a bottom portion offrame20. Drivemotor assembly40 is positioned toward the front oftreadmill10. Drivemotor assembly40 facilitates movement of an endless belt and inclining oftread base50. Movement of the endless belt allows a user to run on the otherwisestationary tread base50. As the user exercises on the endless belt, inclining oftread base50 can simulate natural changes in the slope of the running surface that are encountered during a typical outdoor exercise routine.Tread base50 provides a surface allowing a user to exercise ontreadmill10.Tread base50 provides a desired amount of cushioning to the user exercising thereon.Tread base50 is coupled to frame20 and drivemotor assembly40.
• Frame20 provides stability and support to other components oftreadmill10.Frame20 comprises abase22,upright frame members24a, b,andconsole support members26a, b.Base22 is positioned at the bottom offrame20.Base22 is configured to be in contact with the floor or other surface on whichtreadmill10 is positioned.Upright frame members24a, bare coupled tobase22 andconsole support members26a, b.Upright frame members24a, bsupportconsole support members26a, bwhile providing a desired degree of displacement betweenbase22 andconsole support members26a, b.In the illustrated embodiment,upright frame members24a, bare fixedly connected to base22 to provide a rigid and constant configuration offrame20.
• Console support members26a, bare coupled to the upper ends ofupright frame members24a, b.Console support members26a, bare also coupled toconsole30. The coupling betweenconsole support members26a, bandconsole30permits console30 to move relative to consolesupport members26a, b.In the illustrated embodiment,console support members26a, bare positioned at an angle relative toupright frame members24a, b.The angle at whichconsole support members26a, bare positioned relative toupright frame members24a, ballow the height ofconsole30 to be adjusted while also changing howclose console30 is positioned relative to the user.
• Across member28 is connected to the upper ends ofconsole support members26a, b.Cross member28 maintains a desired displacement betweenconsole support members26a, bwhile also maintaining the overall configuration offrame20. As will be appreciated by those skilled in the art, a variety of types and configurations of frames can be utilized in connection with the treadmill without departing from the scope and spirit of the present invention. For example, in one embodiment, console support members are immovably coupled relative to console. In the embodiment, the console support members are configured to move relative to other components of the frame to change the height of the console. In another embodiment, a single console support member is positioned such that the console can move relative to the single console support member. In another embodiment, the console moves relative to the frame without the use of console support members.
• As previously discussed,console30 is configured to be moveable relative to at least one other component oftreadmill10. In the illustrated embodiment,console30 moves relative to bothframe20 and treadbase50.Console30 is movably coupled toconsole support members26a, bsuch thatconsole30 moves relative toconsole support members26a, bwhen the height ofconsole30 is being adjusted. According to one embodiment of the present invention, the height ofconsole30 is automatically adjusted when the user stands ontread base50. When a user stands ontread base50,console30 automatically detects the height of the user and adjusts the height ofconsole30 to tailor the height ofconsole30 to the user. A variety of types and configurations of movable consoles can be utilized without departing from the scope and spirit of the present invention. In one embodiment, the console changes position based on the speed that the endless belt is moving about the tread base. In another embodiment, the console changes position based on the proximity of the user to the console. In another embodiment, the console can move forward and backward in addition to up and down.
• FIG. 2A is a side perspective view oftreadmill10 illustrating a user exercising ontreadmill10. In the illustrated embodiment, the configuration ofdrive motor assembly40 and treadbase50 relative to frame20 is illustrated.Console30 is coupled toconsole support members26a, b.Console30 is illustrated at a position near the lower end ofconsole support members26a, b.In this configuration,console30 is positioned at or near its lowest height setting. Aheight sensor36 ofconsole30 is positioned on the upper extremity ofconsole30.Height sensor36 directs a signal, such as a light source, infrared source, laser or other means of detecting the height of the user, in the direction of the user. For example, wheresensor36 utilizes an infrared light, the infrared light emanates fromheight sensor36 and then monitors for reflection of the infrared light off a surface such as the user's head or torso.Sensor36 detects the height of the user by monitoring a transition from the presence of reflected light to the absence of reflected light or vice versa. Once the height of the user is detected movement ofconsole30 is stopped, thus setting the height ofconsole30 at a height tailored to the height of the user. In the illustrated embodiment, the user has a relatively short height and thus console30 is positioned at or near its lowest position.
• According to one embodiment of the present invention, the height ofconsole30 is adjusted from a default position at either its lowest or highest position. For example, where the default height ofconsole30 is at the highest position, theconsole30 moves from its highest position downwards until the height of the user is sensed and the corresponding desired console height is achieved. Where the default height of the console is its highest position, the console does not move if reflected light is sensed. Movement of theconsole30 only begins whenheight sensor36 detects an absence of reflected infrared light. As theconsole30 moves downwards relative toconsole support members26a, ban infrared light beam emanates fromheight sensor36 and the sensor monitors for reflection of the infrared light beam. Asconsole30 moves in the downward direction, the infrared light beam intersects the head of the user.
• When the infrared light beam intersects the head of the user, the infrared light reflects from the head of the user and is detected by the infrared sensor ofheight sensor36. Once the reflected light is detected, movement of theconsole30 is stopped setting the height ofconsole30. This tailors the height ofconsole30 relative to the user allowing simple and advantageous manipulation of the controls onconsole30. This also allows the user to view the screens and/or monitors utilized in connection withconsole30 at an optimal height. Additionally, positioning ofconsole30 tailors the height of handrail assembly such that the handrail can be grasped easily and at a comfortable angle by the user.
• FIG. 2B is a side perspective view oftreadmill10 illustrating operation ofconsole30. In the illustrated embodiment, a user is excising ontreadmill10. The user is positioned ontread base50. In the illustrated embodiment, the user exercising ontreadmill10 is substantially taller than the user depicted inFIG. 2A.Height sensor36 ofconsole30 detects the taller height of the user exercising ontreadmill10.Console30 is adjusted to positionconsole30 at a height tailored to the height of the user. In the illustrated embodiment,console30 is positioned at its highest elevation allowing the taller user to easily view the display ofconsole30, adjust user settings, and or grip handrails ofconsole30.
• FIG. 3 is a cross-sectional view ofconsole30 illustrating components ofconsole30 including height adjustment motor31. As previously discussed,console30 is positioned betweenconsole support members26a, band belowcross member28.Console30 provides a mechanism for communicating information to the user and receiving input from the user. In the illustrated embodiment,console30 includes ahandrail assembly32, auser interface34, aheight sensor36, and a consoleheight adjustment mechanism38.
• Handrail assembly32 ofconsole30 is positioned on lateral sides ofconsole30.Handrail assembly32 provides a mechanism allowing a user to graspconsole30 to provide stability and support to the user. In the illustrated embodiment, movement ofconsole30 results in adjustment of the elevation of thehandrail assembly32. As a result, whenconsole30 adjusts to accommodate a user's height, the elevation ofhandrail assembly32 is also adjusted to tailor the elevation ofhandrail assembly32 to facilitate comfortable gripping by the user of thehandrail assembly32. As will be appreciated by those skilled in the art, a variety of types and configurations of handrail assemblies can be utilized without departing from the scope and spirit of the present invention. For example, in one embodiment thehandrail assembly32 is adjustable independently from the console. In another embodiment, the handrail assembly is directly connected to the frame of the treadmill. In another embodiment, a different mechanism for allowing a user to grip the treadmill and to provide stability and support to the user is provided.
• User interface34 is positioned on the front ofconsole30 to facilitate interactivity betweentreadmill10 and the user. In the illustrated embodiment, the user interface includes a display and a plurality of buttons. The display provides a mechanism for communicating information, data, exercise program information, user physiological information, or any of a variety of other types and combinations of information to the user. The buttons allow the user to select different exercise program routines, different display screens, speeds of running, degrees of incline of thetread base50, and a variety of other types and parameters of the treadmill to provide the desired interactivity and tailoring of the treadmill to the specifications desired by the user. As will be appreciated as those skilled in the art, a variety of types and configurations of user interfaces can be utilized in connection withconsole30 without departing from the scope or spirit of the present invention. For example, in one embodiment, a plurality of user displays are positioned onconsole30. In another embodiment, no interactive display is utilized.
• Height sensor36 is coupled tohandrail assembly32 at the top ofconsole30.Height sensor36 senses the height of the user positioned ontread base50. By allowing the height of the user to be established, the height of the console can be tailored to the height of the user. A variety of types and configurations of height sensors can be utilized without departing from the scope and spirit of the present invention. For example, in one embodiment, the height sensor can detect the height of the user independent of movement of console. In another embodiment the height sensor detects the height of the user as the console moves from top to bottom or bottom to top. In another embodiment, the height sensor is positioned on the frame of the treadmill. In another embodiment the height sensor is positioned at a location on the console other than the top of the handrail assembly.
• Consoleheight adjustment mechanism38 moves the console to tailor the height of the console to the height of the user standing on thetread base50. In the illustrated embodiment, consoleheight adjustment mechanism38 comprises agear380, a height adjustment motor382, adrive shaft383, and abracket385.Gear380 engagesconsole support members26a, bto moveconsole30 relative to frame20 and treadbase50. Height adjustment motor382 provides the force to cause movement ofgear380 and the consequent raising and/or lowering ofconsole30. A variety of types and configurations of consoles can be utilized without departing from the scope and spirit of the present invention. For example, in one embodiment, the console can be manually adjusted. In another embodiment, the console comprises a motorized console assembly that is automatically adjustable. In another embodiment, the console can be adjusted based on personalized setting selected relative to, or by, a user.
• Height adjustment motor382 provides the force necessary to generate the rotational movement ofdrive shaft383. Driveshaft383 conveys the force provided by height adjustment motor382 togear380. The lower end ofconsole support member26ais illustrated withendcap member264abeing removed. The grooves inconsole support member26aare adapted to accommodate a portion of consoleheight adjustment mechanism38. As will be appreciated by those skilled in the art, a variety of types and configurations of height adjustment mechanisms can be utilized without departing from the scope and spirit of the present invention. An illustrative console height adjustment mechanism will be illustrated in greater detail with reference toFIG. 5.
• FIG. 4 illustrates aheight sensor36 according to one embodiment of the present invention. In the illustrated embodiment,height sensor36 is coupled to a cross portion ofhandrail assembly32. In the illustrated embodiment,height sensor36 includes ahandrail sensor mechanism360 and status Light Emitting Diodes (leds)366a-e.Sensor mechanism360 detects the height of a user positioned ontread base50 oftreadmill10.Sensor mechanism360 includes alight source362 and alight detector364.Light source362 provides the light that is utilized to detect the height of the user. Light emanating fromlight source362 can reflect from the user when the light contacts the user. When light reflects from the user, it is detected bylight detector364. In this manner,sensor mechanism360 can detect whether a user is positioned in front ofheight sensor36.
• In the illustrated embodiment,height sensor36 utilizes movement ofconsole30 to detect the height of the user. For example, where the console starts at a default position at its upper-most height, light emanates fromlight source362.Light detector364 is actuated to determine whether light fromlight source362 is reflecting from the user. If no reflected light is detected,console30 moves downward in the direction of thelower end262a, bofconsole support members26a, b.Asconsole30 moves downward,light source362 intersects the point at which the user's head is contacted by light emanating fromlight source362. As the light emanating fromlight source362 contacts the user's head it is reflected such that it can be detected bylight detector364. At this point, the height of the user is ascertained and the height of the console is set accordingly.
• According to one embodiment of the present invention, once reflected light is detected atlight detector364,console30 stops its downward progression. The angle of the light emanating fromlight source362 is set such that the light will contact and reflect from the user whenconsole30 is at the desired height for the user. By stopping the downward movement ofconsole30 once reflected light is detected, the height of the console is set at a level tailored to the height of the user positioned ontread base50. A variety of types and configurations of height sensors can be utilized without departing from the scope and spirit of the present invention. For example, in oneembodiment light source362 utilizes an infrared beam to detect the height of the user. In another embodiment, light emanating from the light source is directed at an upward angle such that the console is positioned at a desirable elevation relative to the overall height of the user. In another embodiment, a laser or other light source is utilized in connection with the sensor mechanism. In another embodiment, the console starts at a default position in which the console is at its lowest height and moves upward to detect the height of the user.
• In the illustrated embodiment, status leds366a-eare positioned on the upper portion ofheight sensor36. Status leds366a-eprovide a visual indication of operability ofheight sensor36. For example, status leds366a-ecan provide an indication by flashing alternatively, consecutively, iteratively or in any other type or combination to indicate operability ofheight sensor36. For example, in one embodiment, whenheight sensor36 is attempting to identify the height of the user, status leds366a-eflash to indicate that a determination of the user's height is in progress. In another embodiment, once the determination of the user's height has been made, one or more of the status leds366a-eare actuated as an indicator of the height detected and thus the height ofconsole30. A variety of types and other configurations of status leds can be utilized in a variety of manners without departing from the scope and spirit of the present invention.
• FIG. 5 is a cut-away side view ofconsole support member26aillustrating consoleheight adjustment mechanism38 ofconsole30. In the illustrated embodiment, thelower end262aofconsole support member26ais illustrated.Lower end262aofconsole support member26aincludes agear slot270, arack272, anupper guide portion274, and alower guide portion276. The components ofconsole support member26ainteract with consoleheight adjustment mechanism38 to allow for movement ofconsole30. Consoleheight adjustment mechanism38 includes agear380 and a height adjustment motor382 (seeFIG. 3).Gear380 engagesrack272 ofconsole support member26a.Asgear380 is rotated by height adjustment motor382 movement ofgear380 results in repositioning ofconsole380 as the teeth ofgear380 engagerack272.
• Gear380 is positioned ingear slot270. The size and width ofgear slot270 accommodatesgear380 to allow for movement ofgear380 along the length ofrack272.Upper guide portion274 andlower guide portion276 engage a flange ofconsole30. The flange, in combination withupper guide portions274 andlower guide portion276, ensures smooth and efficient movement ofconsole30 while preventing lateral movement along the length ofconsole30. As will be appreciated by those skilled in the art, a variety of types and configurations of console height adjustment mechanisms can be utilized without departing from the scope and spirit of the present invention. For example, in one embodiment the console height adjustment mechanism utilizes a lead screw to adjust to the height of the console. In another embodiment, the console is moved by moving the console support members.
• FIG. 6 is a flow diagram illustrating a method for adjusting the height of a console based on the height of the user positioned on the treadmill. The method is started instep102. It is than ascertained whether a user is positioned on the treadmill instep104. Once it is determined that a user is positioned on the treadmill, downward movement of the console is started from a default position at the console's uppermost position instep106. Once downward movement of the console is started, a sensing signal is emitted from the sensor instep108. The sensing signal can comprise a infrared light source, a laser, or other signal utilized to detect the height of the user.
• Once the signal is emitted from the sensor, the presence or absence of a reflected signal is detected instep110. It is then determined if a reflective signal has been detected instep112. If no reflected signal has been detected then the method returns to step108 and a sensing signal is again emitted from the sensor. If a reflected signal has been detected then downward movement of the console is stopped instep114. Once the lowering of the treadmill console has been stopped, the height of the user has been ascertained and the console has tailored to the height of the user and the method is ended in step116.
• As will be appreciated by those skilled in the art, a variety of types and configurations of methods can be utilized to automatically adjust the height of the treadmill without departing from the scope and spirit of the present invention. For example, in one embodiment, additional acts are utilized to readjust the treadmill every time the user changes the degree of inclination of the tread base. In another embodiment, detection of the height of the user does not start from a default position. In the embodiment, the console starts with upward movement where a reflected signal is detected or starts with downward movement where no reflected signal is detected. The height of the user is determined where the sensor detects a transition from a reflected signal to a non-reflected signal and vice versa.
• FIG. 7 is a side perspective view oftreadmill10 illustrating acushioning assembly60 according to one aspect of the present invention. Cushioningassembly60 is utilized in connection withtread base50.Tread base50 provides a surface allowing a user to exercise ontreadmill10.Tread base50 is coupled to frame20 and drivemotor assembly40.Tread base50 includes aproximal end52, adistal end54, anendless belt55, adeck56, and atread base frame58.Proximal end52 oftread base50 is positioned adjacent to drivemotor assembly40.Distal end54 is positioned away fromdrive motor assembly40.Endless belt55 is trained arounddeck56.Endless belt55 provides a continuous running surface simulating movement of a road base or other ambulatory surface on which a user ambulates during exercise ontreadmill10.Deck56 provides support belowendless belt55 to withstand impact from a user exercising thereon. According to one embodiment of the present invention,deck56 flexes during impact to provide cushioning to a user exercising ontread base50.Tread base frame58 provides a support structure upon which other components oftread base50 are coupled.
• Cushioningassembly60 is coupled to treadbase50. Cushioningassembly60 provides cushioning to control the amount of deflection ofdeck56 with respect to treadbase frame58. According to one embodiment of the present invention, cushioningassembly60 automatically adjusts the amount of cushioning experienced by the user ondeck56. The amount of cushioning provided can be varied based on the weight, desired amount of deflection of the deck, or other parameters that can be utilized to customize the amount of cushioning provided by cushioning assembly to a user exercising ontread base50.
• In the illustrated embodiment, cushioningassembly60 comprises avariable cushioning mechanism70 and adeflection sensor assembly80.Variable cushioning mechanism70 provides a mechanism for providing variable amounts of cushioning to a user exercising ontread base50.Deflection sensor assembly80 provides a mechanism for monitoring user parameters, such as the weight of the user or body mass index of the user, to automatically adjust the amount of cushioning provided by cushioningassembly60.
• In the illustrated embodiment,variable cushioning mechanism70 includes a cushioningmember72. Cushioningmember72 is coupled to a portion oftread base frame58. Cushioningmember72 is comprised of a resilient material that is utilized to absorb impact ondeck56. Cushioningmember72contacts deck56 such that when a user is exercising ondeck56 cushioningmember72 absorbs impact while also controlling the amount of deflection ofdeck56.Variable cushioning mechanism70 is one example of an adjustment mechansism.Variable cushioning mechanism70 will be discussed in greater detail with reference toFIG. 8.
• A variety of types and configurations of adjustment mechanisms can be utilized without departing from the scope and spirit of the present invention. For example, in one embodiment, the adjustment mechanism is selected from one of the group consisting of a rheologic mechanism, an airbag, a spring, an air shock, a hydraulic cylinder, a hydraulic bellow, a leaf spring, a coil spring, a solid hollow elastomeric member, a bellows, a cylinder, and a gas shock.
• In the illustrated embodiment,deflection sensor assembly80 includes asensor mechanism82 and adeflection member84.Deflection member84 is coupled todeck56 such that deflection ofdeck56 result in movement ofdeflection member84.Sensor mechanism82 is coupled to treadbase frame58.Sensor mechanism82 detects movement ofdeflection member84 and monitors the amount of movement ofdeflection member84. Based on the amount of movement ofdeflection member84 sensor mechanism is able to ascertain the amount of deflection ofdeck56. The deflection of the deck can be utilized in a variety of manners without departing from the scope and spirit of the present invention. For example, in one embodiment the amount of deflection of the deck can be utilized to determine if the user can safely use the treadmill. In one embodiment, a small amount of deflection can allow the system to determine if a child is positioned on the treadmill. Based on the determination, the system can prevent movement of the endless belt.
• A variety of types and methods for controlling cushioning of the treadmill can be utilized without departing from the scope and spirit of the present invention. In one embodiment, utilizing known qualities of deck, the amount of deflection of deck can be used to ascertain the weight of the user standing on deck. In another embodiment, the amount of deflection of deck is used to maintain desired amounts of cushioning for users of different weights. In yet another embodiment, the amount of cushioning is set at a pre-adjustment setting when the user first steps on the tread base and is then adjusted as the user begins to exercise.
• Utilizing the pre-adjustment setting allows the system to approximate the cushioning setting that will provide the desired amount of cushioning during exercise. For example, the amount of cushioning can be controlled to maintain a desired amount of deflection of the deck. For the sake of illustration, and without restriction the following numerical description provides an example of how a pre-adjustment setting can be utilized. In the example, the amount of cushioning is adjusted to maintain the displacement of the deck between 0.5 inches and 0.75 inches. When a heavy user steps on the deck resulting in displacement of more than 0.75 inches, the amount of cushioning is decreased until the displacement is less than 0.75 inches. When a light user steps on the deck resulting in displacement of less than 0.5 inches, the amount of cushioning is increased until the displacement is greater than 0.5 inches. As the user begins to exercise deflection of the deck increases due to the greater force exerted during running or walking than when just standing on the deck. During exercise, the amount of cushioning is adjusted if the displacement of the treadmill is not between the target displacement of 0.75 inches and 1.0 inches. By utilizing the pre-adjustment setting between 0.5 inches and 0.75 inches, the amount of displacement experienced when exercise is started will be approximately between the target of 0.75 inches and 1.0 inches.
• Deflection sensor assembly can be utilized in a variety of manners to sense parameters regarding the user. For example, the body mass index of the user can be determined using the height and automatically sensed weight of the user. In another embodiment, indicia are utilized to illustrate a point on tread base on which the user is to stand to accurately sense the height and weight of the user. Deflection sensor assembly will be discussed in greater detail with reference toFIG. 8. As will be appreciated by those skilled in the art, the cushioning assembly of the present invention can be utilized with a variety of types and configurations of treadmills. For example, the cushioning assembly can be utilized with a treadmill in which the deck does not flex to absorb impact of the user exercising thereon.
• FIG. 8 is a close up side view ofcushioning assembly60 illustratingvariable cushioning mechanism70 anddeflection sensor assembly80. In the illustrated embodiment,variable cushioning mechanism70 is coupled to treadbase frame58 such that cushioningmember72contacts deck56.Variable cushioning mechanism70 includes cushioningmember72, lever arm74, andmoveable fulcrum76. As previously discussed, cushioningmember72 is adapted to contactdeck56 so as to absorb impact from a user exercising ontread base50. Cushioningmember72 is coupled to lever arm74. Lever arm74 provides a variable amount of resistance based on the effective length of the lever as determined by the position ofmovable fulcrum76 along the length of lever arm74. Lever arm74 is coupled to a cross member oftread base frame58.Moveable fulcrum76 is positioned beneath lever arm74 between cushioningmember72 and the point of coupling withcross member59.
• Whendeck56 deflects, force is exerted on cushioningmember72. In one embodiment, cushioningmember72 absorbs energy from the deflection ofdeck56. Lever arm74 can flex and thus absorb some of the energy from the deflection ofdeck56.Moveable fulcrum76 can be moved closer to, and away from, cushioningmember72. The effective length of lever arm74 and the amount of flexing of lever arm74 varies based on the position ofmoveable fulcrum76. Whenmoveable fulcrum76 is positioned close to, or directly below, cushioningmember72 lever arm74 flexes less than when movable fulcrum is positioned nearer to point ofcoupling59. The smaller amount of flex of lever arm74 results in a smaller amount of deflection ofdeck56. As a result, the user experiences less cushioning and a stiffer deck during exercise ontread base50. When moveable fulcrum is positioned further from cushioningmember72, greater leverage can be exerted on lever arm74 resulting in a greater displacement ofdeck56 and flexing of lever arm74. As a result the user experiences more cushioning and a softer deck when a user is exercising on tread base.
• Deflection sensor assembly80 allows cushioningassembly60 to automatically adjust the position ofmoveable fulcrum76 to provide a desired amount of cushioning fromvariable cushioning mechanism70. Because deflection of the deck is based in part on the weight of the person exercising ondeck56moveable fulcrum76 can be repositioned to maintain a desired amount of cushioning when a user of a different weight begins to exercise ondeck56. For example, if an intermediate amount of cushioning is selected,moveable fulcrum76 will be moved toward cushioningmember72 when a relatively light weight user is replaced by a heavier user.
• In the illustrated embodiment,deflection sensor assembly80 is configured to sense differences in the weight of a new user positioned ondeck56 to automatically make adjustments tovariable cushioning mechanism70 to maintain a desired level of cushioning. As previously discussed,deflection member84 is coupled todeck56 oftread base50. When a user is positioned ontread base50,deck56 deflects in a downward direction. Such deflection is sensed bysensor mechanism82. The amount of movement ofdeflection member84 is monitored and the weight of the user positioned ontread base50 is ascertained. Based on the known weight of the user,moveable fulcrum76 can be repositioned to maintain the desired degree of cushioning provided byvariable cushioning mechanism70.
• In one embodiment, thevariable cushioning mechanism70 is given a pre-adjustment setting based on a coarse weight reading of the user when the user first is positioned on the deck. Once the user begins to exercise, thevariable cushioning mechanism70 undergoes additional adjustment to fine tune the amount of cushioning subsequent to the coarse weight reading. By providing a pre-adjustment setting based on a coarse weight reading, thevariable cushioning mechanism70 can more closely approximate the desired amount of cushioning before the user starts exercising. Thus, even before the exact weight or desired setting of the variable cushioning mechanism is ascertained, a rough estimation of the setting of the variable cushioning mechanism is provided. In one embodiment, a variety of coarse weight categories are determined with a pre-adjustment setting for the variable cushioning mechanism being associated with each coarse weight category. When the user steps on thedeck56, the coarse weight reading of the user is ascertained, associated with a weight category, and then the variable cushioning mechanism is automatically adjusted to the pre-adjustment setting associated with coarse weight category.
• A variety of types and configuration of sensors can be utilized in a variety of manners without departing from the scope and spirit of the present invention. For example, in one embodiment the deflection sensor assembly comprises a hall effect sensor. In another embodiment, the deflection sensor is from a group comprising an optical sensor, a magnetic sensor, a potentiometer, a linear potentiometer, or a rotary potentiometer, a contact sensor, a contact sensing device. In another embodiment, the sensor detects the weight of the user without sensing deflection of the deck.
• It will also be appreciated, thatdeflection sensor assembly80 andvariable cushioning mechanisms70 can be utilized to provide additional functionality other than maintaining a desired degree of cushioning relative to users of different weights” For example, a user of a constant weight may desire a change in the amount of cushioning provided byvariable cushioning mechanism70 based on the type or intensity of exercise to be performed. For example, a user may select a large amount of cushioning for a long and slow paced workout while desiring a small amount of cushioning for a shorter more intense workout. By selecting a change in the amount of cushioning desired,moveable fulcrum76 can be repositioned along the length of lever arm74 to accommodate such changes in the desired amount of cushioning. Additionally, it will be appreciated that the location of the user ontread base50 is not the only factor affecting the deflection ofdeck56. For example, deflection ofdeck56 can be a function of the amount of force exerted by the user ondeck56 during an exercise routine. A user having a constant weight will exert a given amount of pressure ondeck56 when walking and relatively greater amount of pressure ondeck56, resulting in a larger deflection ofdeck56, when running at full speed. Such changes in deflection can be monitored bydeflection sensor assembly80. In response to changes in deflection,moveable fulcrum76 can be moved along the length of lever arm74 to maintain a desired degree of cushioning during an exercise routine in which the force exerted by the user ondeck56 changes during the routine.
• FIG. 9 illustrates a bottom perspective view oftreadmill10 illustrating components of cushioningassembly60 according to one aspect of the present invention. In the illustrated embodiment,variable cushioning mechanism70 includescushioning members72a, b,lever arms74a, b,moveable fulcrums76a, band atransverse bar78. Cushioningmembers76a, bare positioned on each side ofdeck56 to provide a bilateral and predetermined amount of cushioning ondeck56. Additionally, leverarms74a, bandmoveable fulcrums76a, bare positioned on either side ofdeck56 to provide the desired level of cushioning ondeck56.
• Transverse bar78 is positioned between moveable fulcrum76a, b.Transverse bar78 facilitates uniform movement ofmoveable fulcrum76a, bto maintain an equal amount of displacement ofmoveable fulcrums76a, b.By maintaining an equal amount of displacement ofmovable fulcrums76a, b,a consistent amount of cushioning is provided bylever arms74a, bandcushioning members72a, b.Transverse bar78 is coupled toadjustment rod90.Adjustment rod90 is coupled tocushioning adjustment motor92.
• Cushioningadjustment motor92 causes lengthening and shortening ofadjustment rod90. Asadjustment rod90 lengthens and shortens, movement oftransverse bar78 occurs proximally and distally along the length ofmoveable fulcrum76a, b.Movement oftransverse bar78 results in movement ofmoveable fulcrum76a, band a change in the amount of cushioning provided byvariable cushioning mechanism70. As will be appreciated by those skilled in the art, a variety of types and configurations of cushioningassembly60 can be used without departing from the scope and spirit of the present invention. For example, in one embodiment a lead screw assembly is utilized to cause movement of the moveable fulcrum. In another embodiment, a single cushioning member is positioned across the entire lateral length of the deck. In another embodiment, a plurality of variable cushioning mechanisms are positioned along the length of tread base. In another embodiment, a cushioning assembly is adapted to provide a variable amount of cushioning with a treadmill in which the cushioning is provided by mechanisms other than the treadmill deck.
• FIG. 10 is a block diagram view illustrating operation of cushioningassembly60 according to one aspect of the present invention. In the illustrated embodiment, when the weight of the user is placed ondeck56,deflection sensor assembly80 detects deflection ofdeck56 and conveys the amount of deflection to controller101. Controller101 ascertains the weight of the user based on the reported deflection and known properties ofdeck56. The user inputs the desired amount of cushioning to be provided by thevariable cushioning mechanism70 by inputting the desired amount of cushioning into usercushioning selection pad100. According to one embodiment of the present invention, usercushioning selection pad100 is provided in the user interface ofconsole30.
• Based on the weight of the user and information regarding the desired amount of cushioning input into usercushioning selection pad100, controller101 sends cushioning instructions tocushioning adjustment motor92 ofvariable cushioning mechanism70. Thecushioning adjustment motor92 causes movement ofmoveable fulcrum76a, bto change the amount of cushioning to the desired amount of cushioning. In this manner, cushioningassembly60 automatically detects the weight of the user and adjusts the amount of cushioning provided byvariable cushioning mechanism70 such that the amount of cushioning provided is appropriate based on the desired amount of cushioning selected by the user.
• As will be appreciated by those skilled in the art, a variety of types and configurations of controllers can be utilized without departing from the scope and spirit of the present invention. For example, in one embodiment the controller comprises an input mechanism that allows the user to input a desired amount of cushioning. In one embodiment, the desired amount of cushioning is selected from a group consisting of hard, medium or soft cushioning. In another embodiment, the desired amount of cushioning can be selected from a continuum of amounts of cushioning.
• According to one embodiment of the present invention, any changes in deflection ofdeck56 are sensed bydeflection sensor80, and conveyed back to controller101. Such changes in deflection ofdeck56 can be caused by an increased impact force related to the intensity of the user's workout; changes in the weight of the user subsequent to a change in user; or other factors such as the use of weights added during the exercise routine. Additionally, any changes in the desired amount of cushioning to be provided byvariable cushioning mechanism70 can be monitored by controller101. As a result, any combination of changes in reported deflection and desired amount of cushioning input by user can result in new cushioning instructions tovariable cushioning mechanism70. Such instructions can result in change of the position ofmoveable fulcrums76a, bto change the amount of cushioning provided by lever arm74 and cushioningmember72.
• As will be appreciated by those skilled in the art, a variety of types and combinations of cushioning assemblies can be utilized without departing from the scope and spirit of the present invention. For example, the controller can be automatically set to change the amount of cushioning based on the amount of deflection of deck. In another embodiment, the deflection sensor and controller can be integrally coupled into a single unit. In another embodiment, the deflection sensor is actuated only in response to user input on the user cushioning selection pad. Any variety of combinations of cushioning assemblies and moveable consoles can be utilized without departing from the scope and spirit of the present invention. The disclosure of patent application entitled, “Treadmill with Movable Console”, filed Jan. 9, 2004 of Express Mail Number EV 396 740 450 US, is hereby incorporated by reference in its entirety.
• The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (41)

1. A cushioned treadmill, comprising:

treadbase comprising a deck that moves when an exerciser exercises on the treadbase; and

a self-adjusting cushioning assembly configured to (i) provide cushioning to movement of the deck; and (ii) adjust the amount of cushioning provided to movement of the deck.

2. The cushioned treadmill ofclaim 1, wherein the self-adjusting cushioning assembly automatically adjusts when a user steps on the treadbase.

3. The cushioned treadmill ofclaim 1, wherein the self-adjusting cushioning assembly adjusts when a user having a different weight from the previous user steps on the treadbase.

4. The cushioned treadmill ofclaim 1, wherein the user can select the amount of cushioning to be provided by the self-adjusting cushioning assembly.

5. The cushioned treadmill ofclaim 1, further comprising a sensor for adjusting the amount of cushioning provided by the self-adjusting cushioning assembly.

6. The cushioned treadmill ofclaim 5, wherein the sensor comprises a deflection sensor assembly.

7. The cushioned treadmill ofclaim 6, wherein the deflection sensor assembly ascertains the weight of the user standing on the treadbase by monitoring the amount of deflection of the deck of the treadbase.

8. The cushioned treadmill ofclaim 7, wherein the deflection sensor assembly includes a hall effect sensor.

9. A treadmill as recited inclaim 1, wherein the treadbase further comprises a treadbase frame, wherein the deck is coupled at one end to the treadbase frame and moves with respect to the treadbase frame when the user exercises on the treadbase frame.

10. A treadmill as recited inclaim 9, wherein the treadbase further comprises first and second rollers mounted adjacent opposing ends of the deck and an endless belt trained about the rollers.

11. A cushioned treadmill, comprising:

a frame;

a deck mounted on the frame such that the deck moves with respect to the frame; and

a self-adjusting cushioning assembly configured to provide cushioning to movement of the deck with respect to the frame and to automatically adjust the amount of cushioning provided to the movement of the deck.

12. The cushioned treadmill ofclaim 11, wherein the frame comprises a tread base frame.

13. A cushioning treadmill as recited inclaim 11, wherein the self-adjusting cushioning assembly comprises

(i) a cushioning mechanism positioned between the deck and the frame so as to cushion movement of the deck with respect to the frame;

(ii) a sensing assembly configured to sense deflection of the deck;

14. The cushioned treadmill ofclaim 13, wherein the self adjusting cushioning assembly further comprises a controller electrically coupled to the cushioning mechanism and the sensing assembly such that the amount of cushioning provided to movement of the deck is adjusted in light of feedback received by the controller regarding the amount of deflection experienced by the deck

15. The cushioned treadmill ofclaim 12, wherein the sensor is electrically coupled to the cushioning mechanism such that upon sensing deflection of the deck, the cushioning mechanism is adjusted.

16. A treadmill as recited inclaim 12, further comprising a controller electrically coupled to the sensor and the cushioning mechanism wherein upon sensing deflection of the deck, the sensor sends a signal to the controller and the controller sends a signal to the cushioning mechanism to adjust the amount of cushioning of the deck.

17. A treadmill as recited inclaim 16, wherein the controller comprises an input mechanism such that the user can input a desired amount of cushioning.

18. A treadmill as recited inclaim 17, wherein the user can input a desired amount of cushioning, the desired amount of cushioning selected from the group consisting of hard, medium or soft cushioning.

19. A treadmill as recited inclaim 12, wherein the sensor comprises a Hall effect sensing mechanism.

20. A treadmill as recited inclaim 12, wherein the sensor comprises an optical sensor.

21. A treadmill as recited inclaim 12, wherein the sensor comprises a potentiometer.

22. A treadmill as recited inclaim 21, wherein the sensor comprises a linear potentiometer.

23. A treadmill as recited inclaim 21, wherein the sensor comprises a rotary potentiometer.

24. A treadmill as recited inclaim 12, wherein the sensor comprises a contact sensor.

25. A treadmill as recited inclaim 12, wherein the sensor comprises a non-contact sensing device.

26. A treadmill as recited inclaim 25, wherein the self-adjusting cushioning assembly includes an adjustment mechanism.

27. A treadmill as recited inclaim 26, wherein the adjustment mechanism is selected from the group consisting of a realogic mechanism, an airbag, a spring, an air shock, a hydraulic cylinder, a hydraulic bellow, a leaf spring and a coil spring, a solid hallow elastomeric member, a bellows, a cylinder, and a gas shock.

28. A cushioning treadmill configured such that the amount of cushioning is automatically set based on certain initial desired input levels of cushioning selected by the user, comprising:

a treadbase comprising;

a frame;

a deck;

an endless belt trained about first and second rollers coupled to the frame;

a cushioning mechanism configured to cushion movement of the deck with respect to the frame; and

a sensing assembly configured to sense deflection of the deck and to adjust the amount of deflection of said deck based on the amount of deflection sensed by the sensing assembly.

29. A treadmill as recited inclaim 28, wherein upon sensing a deflection that is greater than an amount that is initially selected by the user upon initial input, a controller signals the adjusting mechanism to decrease the amount of cushioning.

30. A treadmill as recited inclaim 28, wherein upon sensing a deflection that is less than an amount that is initially selected by the user upon initial input, a controller signals that adjusting mechanism to increase the amount of cushioning.

31. A treadmill as described inclaim 30, wherein the sensing assembly comprises a sensor and a controller, wherein the controller is electrically coupled between the sensor and the cushioning mechanism.

32. A self-adjusting, cushioned treadmill configured to enable a user to input a desired amount of cushioning and to self-adjust during use of the treadmill such that the desired level of cushioning is achieved, the treadmill comprising:

a frame;

a deck moveably coupled to the frame;

first and second rollers coupled to opposing ends of the frame;

a belt trained about said rollers such that a running surface of said belt extends over said deck,

a cushioning mechanism configured to cushion movement of the deck with respect to the frame;

a sensor adapted so as to sense deflection of the deck;

a controller electrically coupled to the sensor and to the cushioning assembly, the controller having user inputs enabling the user to select a desired amount of cushioning within a range of available cushioning, such that upon sensing an amount of deflection of the deck that is not in accordance with the amount of cushioning selected by the user, the cushioning mechanism adjusts the amount of deflection of the deck.

33. A cushioned treadmill, comprising:

a treadbase having a treadbase frame and a deck movably coupled to the treadbase frame;

a cushioning mechanism positioned so as to cushion movement of the deck with respect to the frame;

a sensing assembly configured to sense deflection of the deck; and

a controller electrically coupled to the cushioning mechanism and the sensing assembly such that the cushioning mechanism is adjusted based on information received from the sensing assembly.

34. A self-adjusting, cushioned treadmill configured to enable a user to input a desired amount of cushioning and to self-adjust during use of the treadmill such that the desired level of cushioning is achieved, the treadmill comprising:

a frame;

a deck moveably coupled to the frame;

first and second rollers coupled to opposing ends of the frame;

a belt trained about said rollers such that a running surface of said belt extends over said deck,

a cushioning mechanism configured to cushion movement of the deck with respect to the frame;

a sensor adapted so as to sense deflection of the deck;

a control electrically coupled to the sensor and to the cushioning assembly, the controller adjusting the cushioning mechanism to a preadjustment setting based on the deflection of the deck.

35. The self-adjusting cushioning treadmill ofclaim 34, wherein the sensor provides a coarse weight reading.

36. The self-adjusting cushioning treadmill ofclaim 34, wherein the coarse weight reading is based on the deflection of the deck.

37. The self-adjusting cushioning treadmill ofclaim 34, wherein the coarse weight reading is made when the user first steps on the deck.

38. The self-adjusting cushioning treadmill ofclaim 34, wherein the preadjustment setting of the cushioning mechanism is based on the coarse weight reading.

39. The self adjusting cushioning treadmill ofclaim 34, wherein a plurality of coarse weight categories are utilized to determine the preadjustment setting.

40. The self adjusting cushioning treadmill ofclaim 34, wherein the preadjustment setting provides an amount of cushioning within a range of available cushioning.

41. The self adjusting cushioning treadmill ofclaim 34, wherein subsequent to setting the preadjustment setting, upon sensing an amount of deflection of the deck that is not in accordance with the desired amount of cushioning, the cushioning mechanism adjusts the amount of deflection of the deck.

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