Utility model content
A task of the present utility model is to provide one kind and squatted down training aids, the resistance provided by the training aids of squatting downForce curve by accurate measurement, calculate and design, by using air pressure as sources of resistance, can motion processIn, provided for muscle and stablize constant resistance.Simultaneously because resistance is stable in motion process, pass through the accurate meter of mechanical linkageCalculate, make the maximum sticking point of resistance and leg and the maximum sticking point of buttocks muscles synchronous, training effect can be greatly improved.
According to the utility model, foregoing task squats down training aids to solve by one kind, and the training aids of squatting down includes：
Body frame；
Bar linkage structure, the bar linkage structure includes first connecting rod and second connecting rod, and the first end of the first connecting rod can turnThe body frame bottom is fixed to dynamicly, and the second end of the first connecting rod is rotatably coupled to the first of the second connecting rodEnd；
Upper scaffold, the upper scaffold is argued for the sake of arguing including the first parallel shoulder and argued for the sake of arguing with the second shoulder, the first shoulder liftBar and the second shoulder are argued for the sake of arguing to be fixed to one another to form dies by cross bar, and the second end of the second connecting rod is rotationallyIt is attached to the midpoint of the cross bar；
Pneumatic box, has：
Cylinder, it includes piston and piston rod, wherein the cylinder is fixed in such a way that it can be in its length direction instituteRotation with surface certain angle, and one end of the piston rod is connected with piston, and the other end is rotatably coupled to instituteState a bit on first connecting rod；
Air accumulator, it is used to storing compressed gas and is connected with cylinder with to cylinder compressed gas supplying.
Following advantages are at least had according to training aids of the present utility model of squatting down：, can by using air pressure as sources of resistanceDuring motion, to be provided for muscle and stablize constant resistance, simultaneously because resistance is stable in motion process, pass through machineryThe accurate calculating of connecting rod, makes the maximum sticking point of resistance and leg and the maximum sticking point of buttocks muscles synchronous, can greatly improve instructionPractice effect.
Provided in an expansion scheme of the present utility model, the training aids also includes：Supporting part, in piston rodDuring in nature elongation state, the bar linkage structure is supported.By the expansion scheme, the movable range of bar linkage structure can be limitedIn predetermined scope.
Provided in an expansion scheme of the present utility model, the training aids also includes：Sensor, it is configured as surveyingMeasure the output resistance and/or peak power and/or acceleration of pneumatic box；And display device, it is configured measured by displayData.By the expansion scheme, parameters can be shown in real time to user.
Provided in an expansion scheme of the present utility model, the piston rod is rotatably coupled to apart from described firstIn the bar length of first end 1/2 of connecting rod to the scope of 3/4 bar length；The cross bar is arranged on the bar of first end 1/2 argued for the sake of arguing apart from shoulderIn length to the scope of 2/3 bar length；When piston rod is in nature elongation state, the angle of the first connecting rod and second connecting rod existsIn the range of 80 to 100 °.
Another task of the present utility model is to provide one kind and squatted down training aids, passes through the training aids of squatting down, it is possible to achieveFiner resistance adjustment, while constant resisting force can be kept during user movement, so as to realize more preferable training effect simultaneouslyAvoid impact damage.
According to the utility model, foregoing task squats down training aids to solve by one kind, and the training aids of squatting down includes：Constant-resistancePower pneumatic box, it has：
Cylinder, it includes piston and piston rod, wherein the cylinder is fixed in such a way that it can be in its length direction instituteRotation with surface certain angle, and one end of the piston rod is connected with piston, and the other end is connected with eccentric wheel；
Air accumulator, it is used to storing compressed gas and is connected with cylinder with to cylinder compressed gas supplying；
Two guide rails, it is used to guide eccentric wheel；
Pull rope, it is used to the power of user being delivered to eccentric wheel；And
Eccentric wheel, it is wound in the side of dorsad cylinder by pull rope and the eccentric wheel is arranged between two guide rails,The eccentric wheel is slided under the pulling of pull rope in described two guide rails, wherein piston rod is connected to eccentric wheelNon-central place so that angle of the piston rod in the sliding process of eccentric wheel between pull rope is not zero；
Wheel disc, the wheel disc is coupled with the pull rope, and the resistance of the constant-resistance pneumatic box output passes through the tractionRope is output to the wheel disc, and central axis is coiled with driven wheel；And
Body frame, it is used for the central shaft for accommodating constant-resistance pneumatic box and the fixed wheel disc
The first parallel shoulder is argued for the sake of arguing is argued for the sake of arguing with the second shoulder, and first shoulder is argued for the sake of arguing the one end argued for the sake of arguing with the second shoulderThe side of wheel disc is fixed to along the central shaft of the wheel disc, central axis is coiled with driven wheel.
Following advantages are at least had according to training aids of the present utility model of squatting down：(1) constant-resistance pneumatic box is only being usedDuring as sources of resistance, substantially invariable resistance can be realized during user movement, this following uniqueness based on inventor is seen clearly,When user performs training and drives pull rope to make piston rod positive movement, the pull rope will drive the inclined of constant-resistance pneumatic boxHeart wheel is rotated, and with the rotation of eccentric wheel, the piston rod for being connected to the non-central place of eccentric wheel no longer remains parallel to pull rope,But the angle between pull rope becomes larger and is not zero, now, point of the main force, i.e. resistance cylinder in pull rope directionPower, the resistance for being output to pull rope direction are tapered into, and at the same time, the compressed air in cylinder is as volume is by compressionIncreasing air pressure is presented, therefore resistance cylinder can become big, therefore the increase of resistance cylinder and resistance cylinder are in pull rope directionOn the reduction of component cancel out each other that (i.e. resistance cylinder is multiplied by the folder cosine of an angle between piston rod and pull rope, its product baseThis is constant) so that resistance, the i.e. output resistance of constant-resistance pneumatic box being eventually transferred on pull rope keep substantially constant, togetherReason, otherwise when piston rod counter motion or when being replied to initial position while replying pull rope (such as user do relaxing exercise),The angle is tapered into, at this moment, because resistance cylinder is now also diminishing, thus output resistance remain in that it is constant；(2) basisThe compensation precision of the constant-resistance pneumatic box of training aids of the present utility model is higher, because by accurately determining piston rod and eccentric wheelTie point with the distance between eccentric wheel center, can be accurately determined piston rod during user movement with pull rope itBetween angle change curve so that accurately determine the component factor (the folder cosine of an angle i.e. between piston rod and pull rope) changeCurve, and then the change of resistance cylinder is accurately compensated for, finally realize constant output resistance；(3) according to of the present utility modelTraining aids can subtly adjust the output resistance (being for example accurate to 0.1kg) of constant-resistance pneumatic box, thus provide more precisely andMore targeted fitness training.
Provided in a preferred scheme of the present utility model, eccentric wheel has the groove for possessing certain length, and livingThe adjustable connecting portion of stopper rod is slidably arranged in the groove, and the groove has telescopic projectionPortion so that the desired position in the groove is fixed in the case where adjustable connecting portion can stretch out in the lug bossPut place.By the preferred scheme, can easily realize adjustable connecting portion in a groove slidably and be fixedly secured so thatRealize that the distance at the center of adjustable connecting portion and eccentric wheel is freely adjusted.
Provided in another preferred scheme of the present utility model, the adjustable connecting portion by the driving of motor in a grooveSlide, and the lug boss is extended and retracted by the driving of motor.By the preferred scheme, adjustable company can be not only realizedThe automation of socket part and the distance at eccentric wheel center is adjusted, and due to being motor driving, it is possible to achieve more accurate adjustment,So as to realize more accurate drag compensation.
In another preferred scheme of the present utility model provide, the training aids also include subscriber identification module, its by withIt is set to the identity of identification user and controls the gas of constant-resistance pneumatic box according to user's drill program after identification user identityPump is to set the output resistance of constant-resistance pneumatic box and by the adjustable connecting portion of regulating piston bar in the groove of eccentric wheelPosition make the output resistance constant.By the preferred scheme, can quickly it be set suitable for the user's according to userOutput resistance, and ensure the constant resisting force.
Provided in an expansion scheme of the present utility model, described training aids also includes memory, and it is configured asUser's drill program of user and the measured data of user are stored, wherein the subscriber identification module is additionally configured toThe user's drill program and measured data of the user is shown after the identity for recognizing user., can be with by the expansion schemeUser is facilitated to check the historical movement data of their own.
In another expansion scheme of the present utility model provide, the training aids also include network access device, its by withIt is set to and is connected to internet so that the sports application on the mobile device with user communicates., can be with by the expansion schemeFacilitating user, (such as smart mobile phone, flat board are calculated by the user data synchronization on training aids of the present utility model to its mobile deviceMachine, intelligent watch etc.) on sports application or by the sports application set training aids on kinematic parameter,Such as output resistance.
Embodiment
It should be pointed out that each component in each accompanying drawing perhaps to show, and be not necessarily ratio with illustrating and be exaggeratedExample is correct.In the drawings, it is equipped with identical reference to identical or function identical component.
Traditional training of squatting down is that user's shoulder bears a heavy burden, and leg and buttocks muscles are trained by squatting motion.However, thisPlanting resistance can change with the motion of user.For example, when standing up action, leg and gluteus shrink, and resistance is oftenDiminish because of the influence of bar and disc self inertia.This change can cause punching in training to leg and buttocks jointWound evil.Simultaneously in motion process, resistance maximum point and the maximum sticking point of muscle are asynchronous, and training effect is also undesirable.
In order to overcome this defect, the application provides one kind and squatted down training aids, the resistance provided by the training aids of squatting downForce curve by accurate measurement, calculate and design, by using air pressure as sources of resistance, can motion processIn, provided for muscle and stablize constant resistance.Simultaneously because resistance is stable in motion process, pass through the accurate meter of mechanical linkageCalculate, make the maximum sticking point of resistance and leg and the maximum sticking point of buttocks muscles synchronous, training effect can be greatly improved.
Fig. 1 shows the structural representation of the training aids 100 of squatting down according to one embodiment of the present utility model.
As shown in figure 1, training aids 100 of squatting down may include body frame 101, shoulder pad 102, upper scaffold 103, bar linkage structure 104, gasDynamic case 105.Training aids 100 of squatting down is mainly the leg for training user and buttocks muscles., can by using air pressure as sources of resistanceSo that there is provided stablize constant resistance during motion.Simultaneously because resistance is stable in motion process, pass through mechanical linkageIt is accurate to calculate, make the maximum sticking point of resistance and leg and the maximum sticking point of buttocks muscles synchronous, training effect can be greatly improved.
Body frame 101, it is used to accommodate pneumatic box 105 and is rotatably fixed scaffold 103 and bar linkage structure 104.Body frame101 can be made up of plastics, metal or timber.However, it should be appreciated by one skilled in art that body frame 101 is not limited toStructure shown in Fig. 1, as long as but available for receiving pneumatic box 105 and being rotatably fixed scaffold 103 and bar linkage structure 104Structure, in protection domain of the present utility model.
Pneumatic box 105 is configured as the resistance provided by air pressure mode, and the wherein resistance is exported by bar linkage structure 104To upper scaffold 103.Pneumatic box 105 includes cylinder 1051.Cylinder 1051Including piston (not shown) and piston rod 1052, wherein instituteState cylinder 1051It is fixed in such a way that it (such as perpendicular) can rotate certain angle in the plane where its length directionSpend (such as 30 °, 45 ° or 90 °).In Fig. 1, cylinder 1051It is illustrated as one end to be fixed on body frame 101 by rotary shaft so thatIt can be rotated.But other rotation-fixed manners be also it is contemplated that, for example cylinder in the middle pivotally byIt is fixed on body frame 101.Piston rod 1052One end be connected with piston, the other end and first connecting rod 1041Connection.
Pneumatic box 105 also includes air accumulator 1053, its be used to storing compressed gas and with cylinder 1051Connection is with to cylinder1051Compressed gas supplying.Air accumulator 1053Preferably there is porting (not shown) for adding and discharging compressed gas, andAnd the pneumatic box can also include air pump (not shown), the air pump connects to add into air accumulator with portingCompressed gas or discharge compressed gas, wherein setting the output resistance of pneumatic box by adding and discharging compressed gas.
As shown in figure 1, bar linkage structure 104 may include the first connecting rod 104 being rotatably coupled1And second connecting rod 1042。For example, first connecting rod 1041And second connecting rod 1042Can by pin, be hinged, rotate connection, riveting or other similar fashions according toIt is secondary to be rotatably coupled.
First connecting rod 1041First end be rotatably fixed in the lower beam of body frame 101, the second end with second connectBar 1042One end be rotatably coupled.Pneumatic box 105 is rotatably coupled to first connecting rod 1041Any point in addition to first endOn, for transmitting the power of user or transmitting the output resistance of pneumatic box 105.In specific embodiment of the utility model, pistonBar 1052It can be rotatably coupled to according to actual needs apart from first connecting rod 1041The bar length of first end 1/2 to the long scope of 3/4 barIt is interior.
Second connecting rod 1042The other end be rotatably coupled with upper scaffold 103.In alternative embodiment of the present utility modelIn, second connecting rod 1042It is adjustable telescopic bar, user can pass through connecting rod regulation second connecting rod 104 according to the height of oneself2LengthDegree.
Upper scaffold 103 argues for the sake of arguing 103 including two parallel shoulders1With 1032, shoulder argues for the sake of arguing 1031With 1032Pass through cross bar1033It is fixed to one another to form dies.In specific embodiment of the utility model, shoulder argues for the sake of arguing 1031With 1032LengthDegree is equal, can be as needed by cross bar 1033It is arranged on and argues for the sake of arguing 103 apart from shoulder1With 1032The bar length of first end 1/2 to 2/3 barIn long scope.
Shoulder argues for the sake of arguing 1031With 1032First end be rotatably fixed to respectively in the upper beam of body frame 101, the other endBottom is provided with shoulder pad 102.Shoulder argues for the sake of arguing 1031With 1032Length be more than first connecting rod 1041Length.Second connecting rod 1042The other end be rotatably coupled to cross bar 1033Midpoint.
User stands up or squatted down to overcome the output resistance of pneumatic box 105, so as to complete training.It is preferred that training methodIt is that the support force of user forms a pair of equilibrant force with the output resistance of pneumatic box 105 and evenly lifts or put down scaffold103。
Training aids 100 of squatting down can also alternatively include underframe 106, its be used to supporting training aids 100 and stabilize it andDo not topple over.Underframe 106 can be the base with slipmat.But in other embodiments, training aids 100 can not also include bottomFrame 106, such as training aids 100 can be directly anchored on ground.
Training aids 100 of squatting down alternatively also includes display device 107, and the display device 107 is configured as showing in real timeShow output resistance, balance weight, user power (such as instantaneous burst power), the acceleration of constant-resistance pneumatic box 105, can be withIt is configured as showing user's drill program.In addition, display device 107 can be equipped with touch-screen and user interface, for user coupleThe adjustable parameter of training aids 100 is adjusted, for example, adjust the output resistance etc. of resistance pneumatic box 105.
Squat down the alternatively also included supporting part 108 of training aids 100, for when piston rod is in nature elongation state,Support the bar linkage structure.
Training aids 100 of squatting down alternatively also includes regulation button 109, resistance can be entered by pressing regulation button 109Row adjustment.
Squatted down with reference to Fig. 1 to Fig. 6 introductions the mechanical relationship of each part in the course of the work of training aids 100.
Stress when Fig. 2 shows to squat down training aids 100 user stands up in an initial condition.As shown in Fig. 2 cylinder1051In original operating state.Cylinder 1051It is interior to be full of compressed air, cylinder 1051Piston rod 1052In elongation state.Now the power on piston rod is F1, and the arm of force is L1.First connecting rod 1041With second connecting rod 1042Scope of the angle at 80 to 100 °It is interior.First connecting rod 1041It is substantially parallel with upper scaffold 103, first connecting rod 1041Fulcrum and upper scaffold 103 fulcrum in sameOn straight line.The purpose so designed：Second connecting rod 1042It is to maintain constant angle all the time in motion process.
Fig. 3 show the upper scaffold 103 of the training aids 100 of squatting down shown in Fig. 1 be lifted after structural representation.Fig. 4 showsGo out to squat down stress of the training aids 100 after upper scaffold 103 is lifted.In the state of shown in Fig. 3 and Fig. 4, cylinder 1051Compressed, cylinder 1051Piston rod be in compressive state, cylinder compressed air is depressed into air accumulator, and cylinder piston rod is inCompressive state.
Cylinder is in whole motion process.Cylinder is because gas is compressed, and the power of cylinder output becomes big, meanwhile, cylinder phaseFor first connecting rod 1041The arm of force of fulcrum also become greatly.Second connecting rod 1042The arm of force diminishes.According to equation of equilibrium, FCylinder*LCylinder=FSecond connecting rod*LSecond connecting rod, second connecting rod 1042On the power F that is subject toSecond connecting rodBecome big.
Specific motion process is introduced below in conjunction with Fig. 5.
Fig. 5 shows the motion process of scaffold 103 in the course of work for training aids 100 of squatting down.As shown in figure 5, upper liftFrame 103 is rotated up around fulcrum 501, upper scaffold 103 and first connecting rod 1041And second connecting rod 1042Between angle can occurCertain change, but vary less, therefore ignore this change in actual applications.Therefore, second connecting rod 1042Relative to upper scaffold103 angle is basically unchanged, second connecting rod 1042On the power that is subject to constantly become big.But the fulcrum of its relatively upper scaffold 103The arm of force is constantly reducing (changing to L2 from L1, changing to L3).Both products are held essentially constant.Further, since upper scaffold103 is longer, therefore, and the power that user lifts upwards is basically unchanged relative to the arm of force of the fulcrum of upper scaffold 103.According to equation of equilibrium, FSecond connecting rod * L second connecting rods=F people * L people.So, the power lifted on people is held essentially constant.
Fig. 6 shows top partial view diagram (A) and the side of the training aids 600 of squatting down according to another embodiment of the present utility modelView (B).Squat down training aids 600 body frame, shoulder pad it is similar with the corresponding construction in the training aids 100 of squatting down shown in Fig. 1, thereforeIt is not described in detail.
Training aids 600 of squatting down includes constant-resistance pneumatic box 601.Constant-resistance pneumatic box 601 is fixed on body frame, on perseveranceThe further detail below of resistance pneumatic box 601, refers to Fig. 7.Constant-resistance pneumatic box 601 is configured as providing perseverance by air pressure modeFixed resistance, the wherein resistance are output to wheel disc 602 by pull rope, and can drive wheel disc 602 around central axis.In this realityWith in new preferred embodiment, groove can be enclosed comprising one on the periphery of wheel disc 602, for accommodating and limiting pull rope.Wheel disc602 central shaft is fixed on the body frame for training aids 600 of squatting down.Two parallel shoulders argue for the sake of arguing 6031With 6032One end along wheelThe both sides that the central shaft of disk 602 is fixed to wheel disc 602 simultaneously can drive wheel disc 602 around central axis, and shoulder argues for the sake of arguing 6031With 6032The bottom of the other end be provided with shoulder pad.When in use, user's shoulder is pressed on shoulder pad, and both hands hold regulation handle, Yong HuqiBody, makes shoulder argue for the sake of arguing 6031With 6032Wheel disc 602 is driven around central axis.The resistance F that constant-resistance pneumatic box 601 is exportedCylinderIt is permanentIt is fixed, around the torque L of wheel disc 602Wheel discIt is constant.
Because shoulder argues for the sake of arguing 6031With 6032Longer, therefore, the power that user lifts upwards argues for the sake of arguing 603 relative to shoulder1With 6032The arm of force of fulcrum be basically unchanged, i.e. the torque L for the power that people appliesPeopleIt is constant.According to FCylinder*LCylinder=FPeople*LPeople, so, peopleThe power of upper lift is held essentially constant.
Fig. 7 shows the schematic diagram of constant-resistance pneumatic box 601.
As shown in fig. 7, constant-resistance pneumatic box 601 includes cylinder 701.Cylinder 701 includes piston (not shown) and piston rod704, wherein the cylinder 701 is fixed in such a way that it (such as perpendicular) can turn in the plane where its length directionDynamic certain angle (such as 30 °, 45 ° or 90 °).In the figure 7, cylinder 701 is illustrated as one end and is fixed on by rotary shaft on housing,It is rotated.But other rotation-fixed manners are also what is be contemplated that, for example cylinder is in the middle with rotatable sideFormula is fixed on housing.One end of piston rod 704 is connected with piston, and the other end is connected with eccentric wheel 705.Piston in the figure 7Bar 704 is connected by connecting portion 706 with eccentric wheel 705.
Constant-resistance pneumatic box 601 also includes air accumulator 703, its be used to storing compressed gas and be connected with cylinder 701 withTo the compressed gas supplying of cylinder 701.Air accumulator 703 preferably has porting (not shown) to add and discharge compressed gasBody, and the constant-resistance pneumatic box can also include air pump (not shown), the air pump connected with porting forCompressed gas or discharge compressed gas are added in air accumulator, wherein setting constant-resistance pneumatic by adding and discharging compressed gasThe output resistance of case.
Constant-resistance pneumatic box 601 also includes two guide rails 707 and 708, and it is used to guide eccentric wheel 705.
Constant-resistance pneumatic box 601 also includes pull rope 702, and it is used to the pulling force of user being delivered to eccentric wheel 705.In the range of the utility model, pull rope 702 should broadly understand, it can include various forms of transmission bands, such asNylon rope, chain, metal wire etc..
Constant-resistance pneumatic box 601 also includes eccentric wheel 705, and it is in the side (such as downside) of dorsad cylinder 701 by pull rope702 winding and the eccentric wheel 705 be arranged between two guide rails 707 and 708 so that the eccentric wheel 705 can ledSlided under the pulling of messenger 702 in described two guide rails 707 and 708, wherein piston rod 704 is connected to the non-of eccentric wheel 705Center so that angle of the piston rod 704 in the sliding process of eccentric wheel 705 between pull rope 702 becomes big and be not zero.In the figure 7, piston rod 704 be illustrated as being connected to the center of eccentric wheel 705 part small distance away, but this is onlyExemplary, but in other embodiments, piston rod 704 can also be connected to the center with eccentric wheel 705 at a distance of fartherApart from part.Be preferably set up on the circumference of the eccentric wheel 702 it is fluted for accommodate pull rope 702, with prevent tractionRope 702 is deviate from from eccentric wheel 705.Eccentric wheel 705 is preferably also provided with anti-slip part on circumference, such as rubber edges, thickRough portion and indentation portion are to prevent pull rope 702 from being skidded relative to eccentric wheel 705.Eccentric wheel 705 can possess for adjusting connectionThe device of the link position in portion 706, such as multiple connecting holes or groove (referring to Fig. 8).By the connection for adjusting connecting portion 706Position, can adjust the degree of eccentricity of eccentric wheel, so that compensated curve of the eccentric wheel 705 to the pressure of cylinder 701 is adjusted, so that realNow to the compensation ability of difference cylinder pressure curve.
It should be noted here that " eccentric wheel " in the utility model is appreciated that a kind of round member, itself and pistonThe tie point of bar is not in the center of eccentric wheel, therefore the eccentric wheel can be in itself typical circular component, without oneSurely possesses eccentric orfice.
Constant-resistance pneumatic box 601 alternatively includes fixed pulley 709, and the fixed pulley 709 is passed through by pull rope 702, whereinChange the lead of pull rope 702 by the fixed pulley, such as so that pull rope is flatly from constant-resistance pneumatic boxDraw, so that user pulls, while the guide rail 707 or 708 that pull rope 702 can also be kept as trying one's best.
Fig. 8 show in a schematic the groove 801 on the eccentric wheel 705 of constant-resistance pneumatic box 601, and the groove 801 is usedIn the link position of regulating piston bar 704.
As shown in figure 8, being provided with the groove 801 of certain length on eccentric wheel 705, the length of the groove 801 can rootSet according to specific needs.The connecting portion 706 of piston rod 705 is slidably arranged in the groove 801.It is described recessedGroove 801 has telescopic lug boss 802 so that consolidated in the case where connecting portion 706 can stretch out at described raised 801It is scheduled at the desired position in groove 801.When the lug boss 802 is retracted, connecting portion 706 can be in groove 801Slide to adjust its position, and when connecting portion 706 is slid to after suitable position, the lug boss 802 of groove 801 stretch out withJust connecting portion 706 is clamped in groove 801.The slip of connecting portion 706 and the stretching of lug boss 802 can pass through motorTo drive, to realize accurate positioning.By groove of the connecting portion 706 in eccentric wheel 705 for freely adjusting piston rod 705Position in 801, is especially that by following advantage：For example change when the compressed gas scale of construction of air accumulator 703 (for example withFamily selects adjusting training plan or changes the output resistance of constant-resistance pneumatic box 601 so that air pump fills to air accumulator 703Gas or when deflating), at this moment, original degree of eccentricity of eccentric wheel it cannot be guaranteed that the output resistance of constant-resistance pneumatic box 601 is constant,And if now readjusting position of the connecting portion 706 of piston rod 705 in the groove 801 of eccentric wheel 705, then can make perseveranceThe output resistance of resistance pneumatic box 601 continues to keep constant.This process can realize automatically, for example can be in memoryDeposit air accumulator initial gas pressure-connecting portion position table of comparisons：
| Initial gas pressure of the air accumulator in initial position | The position of connecting portion in a groove |
| Air pressure 1 | Position 1 |
| Air pressure 2 | Position 2 |
The air accumulator initial gas pressure of the table 1.-connecting portion position table of comparisons
The table of comparisons can be drawn by test.The controller of constant-resistance pneumatic box 601 can be pressed according to the table of comparisonsPosition of the connecting portion 706 of piston rod 704 in the groove 801 of eccentric wheel 705 is set according to the air pressure in air accumulator 703, fromAnd the output resistance of constant-resistance pneumatic box 601 is kept constant.In addition, the program be also beneficial to when constant-resistance pneumatic box is dispatched from the factory orConstant-resistance regulation when being calibrated after producing.
Following advantages are at least had according to multi-functional vapour lock training aids 600 of the present utility model：(1) constant-resistance is only being usedWhen power pneumatic box 601 is as sources of resistance, substantially invariable resistance can be realized during user movement, this based on inventor asLower uniqueness is seen clearly, when user performs training and pulling traction rope 702 makes 704 positive movement of piston rod, and the pull rope 702 willDrive the eccentric wheel 705 of constant-resistance pneumatic box 601 to rotate, with the rotation of eccentric wheel 705, be connected to eccentric wheel 705 it is non-inPiston rod 706 at the heart no longer remains parallel to pull rope 702, but the angle between pull rope 702 become larger withoutIt is zero, now, component, the resistance that is output to pull rope direction of the main force, i.e. resistance cylinder in the direction of pull rope 702 gradually becomeSmall, at the same time, increasing air pressure is presented by compression with volume in compressed air in cylinder 701, therefore resistance cylinderIt can become big, therefore the increase of resistance cylinder and the reduction of component of the resistance cylinder on pull rope direction are cancelled out each other (i.e. cylinderResistance is multiplied by the folder cosine of an angle between piston rod 704 and pull rope 702, its product substantially constant) so that it is eventually transferred to leadResistance, the i.e. output resistance of constant-resistance pneumatic box 601 on messenger 702 keep substantially constant, similarly, otherwise when piston rod 704Counter motion or to initial position reply when (such as user do relaxing exercise make pull rope 702 reply when), the angle gradually becomesIt is small, at this moment, because resistance cylinder is now also diminishing, thus output resistance remain in that it is constant；(2) according to of the present utility modelThe compensation precision of the constant-resistance pneumatic box of training aids 600 is higher, because by accurately determining piston rod 704 and eccentric wheel 705Tie point with the distance between eccentric wheel center, can be accurately determined piston rod during user movement with pull rope 702Between angle change curve so that accurately determine the component factor (angle i.e. between piston rod 704 and pull rope 702 it is remainingString) change curve, and then accurately compensate for the change of resistance cylinder, finally realize constant output resistance；(3) according to this realityThe output resistance (being for example accurate to 0.1kg) of constant-resistance pneumatic box 601 can be subtly adjusted with new training aids 600, fromAnd more accurate and more targeted fitness training is provided.
Although some embodiments of the present utility model are described in present specification, to this areaIt is obvious to the skilled person that these embodiments are merely possible to shown in example.It may occur to persons skilled in the art thatNumerous flexible program, alternative solution and improvement project and without departing from scope of the present utility model.Appended claims are intended toScope of the present utility model is limited, and thereby covers method and knot of these claims in itself and its in the range of equivalentsStructure.