US20070281840A1 - Sit-up exercise machine - Google Patents

Abstract

The present invention provides an improved sit-up exercise machine that can be used in sitting posture and functions to exercise several parts of belly, which comprises a sit-up chair and an underlay pivotally connected to the front of the sit-up chair. The chair consists of a back-support, a holding rod, and an adjustable axle seat. The adjustable axle seat is disposed on both sides of the chair, pivotally connects the back-support and the holding rod front and rear by pivot connection element on the top surface of the seat and adjusts the angle between the back-support and the holding rod in the range of several sections. Therefore, it can realize body-building and exercise of different parts of belly.

Description

FIELD OF THE INVENTION
• The present invention relates to an exercise machine for sit-up in sitting posture. More particularly, to an improved sit-up exercise machine that can be used in sitting posture and functions to exercise several parts of belly.
BACKGROUND OF THE INVENTION
• Sit-up is one of the exercises that can help beautify belly and waist part of human body. At present people in our country pay more and more attention to the maintenance of posture, and sit-up becomes more and more popular in daily life. In order to improve the convenience and effect of sit-up, several kinds of sit-up exercise machines provided in market.
• Conventional sit-up exercise machine that can be used in both sitting and lying posture, as illustrated inFIG. 7, comprises a sit-upchair40, which has a head-rest42 on one end thereof andhandgrips44 that can be held by the user.
• Taiwan patent publication No. 494775 disclosed an improved sit-up exercise machine that lies in the sit-up chair can move in the elongated hole. Besides, Taiwan patent publication No. M285366 disclosed another improved sit-up exercise machine that there are several rollers in the central portion of the waist part. However, the above-mentioned constructions are not able to exercise particular parts of the belly according to user's need in practical exercise. It is well known to the exercisers that, more than 6 or 8 abdominal muscles can be formed through exercise. Still, conventional sit-up exercise machine can only make exercisers move from lying posture to bending posture from a fixed lying angle, and the users are subject to doing sit-up exercise blindly, which can only exercise muscles of belly and waist at most, but can not exercise particular parts of belly and waist effectively.
SUMMARY OF THE INVENTION
• Accordingly, the main object of the present invention is to provide an improved sit-up exercise machine that can be used in sitting posture and functions to exercise several parts of belly, which comprises a sit-up chair and an underlay pivotally connected to the front of the sit-up chair, and the chair consists of at least a back-support, a holding rod, and an adjustable axle seat, wherein said adjustable axle seat is disposed on both sides of the chair, pivotally connects the back-support and the holding rod front and rear by pivot connection element on the top surface of the seat and adjusts the angle between the back-support and the holding rod in the range of several sections. Therefore, it can realize body-building and exercise of different parts of belly.
• Another object of the present invention is to provide an improved sit-up exercise machine that can be used in sitting posture and functions to exercise several parts of belly, which comprises a sit-up chair and an underlay connected to the front of the sit-up chair, the chair consists of a back-support, a holding rod, and an adjustable axle seat, wherein said adjustable axle seat is disposed on both sides of the chair, pivotally connects the back-support and the holding rod on its top surface and adjusts the angle therebetween in four sections: 35°-45°, 55°-65°, 65°-75°, and 80°-95°. Owing to the design of the special angle, the users can exercise four different parts of belly to realize the beautification of particular part.
• In order to fulfill the above objects, the present invention adopts the following technical solutions. The sit-up exercise machine according to the present invention, which can be used in sitting posture and functions to exercise several parts of belly, comprises a sit-up chair and an underlay pivotally connected to the front of the sit-up chair. The underlay is in the front of the chair at the position where user's bottom will be put on, and can be connected to the chair by suitable pivot connection element or shaft. The chair consists of a back-support, a holding rod, and an adjustable axle seat that pivotally connects the back-support and the holding rod and adjusts the angle therebetween. Owing to the design of the several special angles, the users can exercise different parts of belly to realize the beautification of particular part.
• The adjustable axle seat is fixedly secured to both sides of the chair, engaged with the underlay through a proper fulcrum, which crosses the underlay to be connected to the adjustable axle seat. The adjustable axle seat pivotally connects the back-support and the holding rod front and rear on the top surface of the seat respectively and sets the angle therebetween. The back of the adjustable axle seat is on the ground, so that when the exercisers do sit-up the axle seat and fulcrum can act as a pivot.
• The back-support is a retractable hub body in shape of Π, and there are joints at the bottom of both sides of Π, which engages the adjustable axle seat by pivot connection element, and a head-rest that supports the neck of the exerciser at the top of the back-support; also, the back-support can adjust its length according to the height or the length of the upper part of the body of the exerciser to meet their needs adaptively.
• The holding rod is a retractable curved support rod, comprising a retractable rod and a lateral grip; the bottom end of the retractable rod is pivotally connected to the adjustable axle seat in a suitable manner so that the holding rod extends upward therefrom and the end far from the adjustable axle seat bends inward to form a lateral grip for the exerciser to hold and press; the retractable rod can adjust its length according to the length of the arm of the exerciser to meet their needs adaptively.
• The exercise can sit on the underlay in sitting posture and adjust the angle between the back-support and the holding rod to a suitable degree with the adjustable axle seat, with the upper part of the body lying against the back-support and the hands holding the grip of the holding rod, and with the adjustable axle seat as the pivot, to let the upper part of the body move toward the lower part of the body to do sit-up exercise. If the belly is divided into four sections, from the above they are the first section, the second section, the third section and the fourth section of belly. When the adjustable axle seat sets the angle between the back-support and the holding rod to the extent in the range of 35°-45°, the exerciser can do exercise aiming at the beautification of the first section of belly; when the angle is in the range of 55°-65°, the exerciser can do exercise aiming at the beautification of the second section of belly; when the angle is in the range of 65°-75°, the exerciser can do exercise aiming at the beautification of the third section of belly; when the angle is in the range of 80°-95°, the exerciser can do exercise aiming at the beautification of the fourth section of belly.
BREIF DESCRIPTION OF THE DRAWINGS
• The foregoing aspects, as well as many of the attendant advantages and features of this invention will become more apparent by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
• FIG. 1 is the perspective view of the preferred embodiment according to the present invention;
• FIG. 2 is the perspective view of carrying out the preferred embodiment according to the present invention;
• FIG. 3 illustrates the four angles between the back-support and the holding rod of the preferred embodiment according to the present invention;
• FIG. 4 illustrates the retractable back-support and retractable holding rod;
• FIG. 5 illustrates the movement of the preferred embodiment according to the present invention;
• FIG. 6 is an exploded view of the belly; and
• FIG. 7 illustrates the conventional sit-up machine.
DESCRIPTION OF THE PREFERRED EMBODIMENT
• Further features, objects and advantages will be evident from the following detailed description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings.
• With reference toFIG. 1 andFIG. 2, the sit-up exercise machine used in sitting posture and functions to exercise several parts of belly provided by the present invention comprises a sit-upchair1 and anunderlay2 connected to the sit-upchair1. Theunderlay2 is disposed in the front of the chair at the position where user's bottom will be put on, and can be pivotally connected to thechair1 by suitable pivot connection element or shaft. The chair consists of a back-support11, aholding rod12, and anadjustable axle seat13 which pivotally connects the back-support11 and theholding rod12 and adjusts the angle θ therebetween. Owing to the design of the several special angles θ, the users can exercise different parts of belly to realize the beautification of particular part.
• Underlay2 is a convex seat consisting of abottom support21 and awaist support22 extending backwards frombottom support21.Bottom support21 correspond to the place people sit on, and hasanti-slip striation211 on the surface to reinforce the friction between theunderlay2 and people's bottom so that the exerciser will not glide to other position when doing sit-up. Besides, there is anotch212 on each side ofbottom support21 for the exerciser to grasp when stopping sit-up or getting up. Thewaist support22 is in shape of arc corresponding to the camber line of the waist. When the exerciser is lying, the place of the waist corresponds with thewaist support22, and the design of arc can make sure the backbone will not be injured in the movement and thus avoids the existing problems in sit-up exercise.
• The adjustable axle seat is fixedly secured to both sides of the chair, engaged with theunderlay2 through a proper fulcrum C, which crosses thewaist support22 of theunderlay2 to be connected to theadjustable axle seat13. Theadjustable axle seat13 pivotally connects the back-support11 and theholding rod12 and sets the angle therebetween. On the top of theadjustable axle seat13 is agroove131 with pivot connection element disposed therein to pivotally connect holdingrod12 and back-support11, which are pivotally connected front and rear in thegroove131 respectively. The back of theadjustable axle seat13 is on the ground, so when the exercisers do sit-up theaxle seat13 can act as the pivot. There is agear shift element132 on the side face of theadjustable axle seat13 which can set the angle θ between theholding rod12 and the back-support11. In this preferred embodiment, the gear shift element is an actuate slot divided into four sections, connected with the side face of the holding rod by coupling element, so the holding rod can glide along the slot so that theholding rod12 can be adjusted to form angle θ₁(35°-45°), θ₂(55°-65°), θ₃(65°-75°) and θ₄(80°-95°), as illustrated inFIG. 3.
• With reference toFIG. 4, The back-support11 is a retractable hub body in shape of Π, and there are joints at the bottom of both sides connecting with theadjustable axle seat13 by pivot connection element, and a head-rest111 that supports the neck of the exerciser at the top of the back-support11; in this embodiment the head-rest is a cavernous body; also, as illustrated inFIG. 3, the back-support can adjust its length according to the height or the length of the upper part of the body of the exerciser to meet their needs adaptively.
• Further, referred asFIG. 4, theholding rod12 is a retractable curved support rod, comprising a retractable rod121 and a lateral grip122; the bottom end of the retractable rod121 is pivotally connected with theadjustable axle seat13 and the distal end of theholding rod12 bends inward to form a lateral grip122 for the exerciser to hold and press; as illustrated inFIG. 3, the retractable rod121 can adjust its length according to the length of the arm of the exerciser to meet their needs adaptively.
• The exerciser can sit on theunderlay2 in sitting posture and adjust the angle between the back-support11 and theholding rod12 to a proper degree with theadjustable axle seat13, with the upper part of the body lying against the back-support11 and the hands holding the grip122 of theholding rod12, with theadjustable axle seat13 as the pivot, to let the upper part of the body move toward the lower part of the body to do sit-up exercise, as illustrated inFIG. 5.
• As illustrated inFIG. 3 andFIG. 6, thebelly3 is divided into four sections, from the above they are thefirst section31, thesecond section32, thethird section33 and thefourth section34 of belly. When theadjustable axle seat13 sets the angle θ between the back-support11 and theholding rod12 to the degree of θ₁(35-45), the exerciser can do exercise aiming at the beautification of thefirst section31 of belly; when the angle is θ₂(55°-65°), the exerciser can do exercise aiming at the beautification of thesecond section32 of belly; when the angle is θ₃(65°-75°), the exerciser can do exercise aiming at the beautification of thethird section33 of belly; when the angle is θ₄(80°-95°), the exerciser can do exercise aiming at the beautification of thefourth section34 of belly.
• The preferred embodiment disclosed is only for illustrating the present invention, and not for giving any limitation to the scope of the present invention. It will be apparent to those skilled in this art that various modifications or changes can be made to the present invention without departing from the spirit and scope of this invention. Accordingly, all such modifications and changes also fall within the scope of protection of the appended claims.

Claims (12)

1. An improved sit-up exercise machine that functions to exercise several parts of belly, comprising:

a sit-up chair and an underlay pivotally connected to the front of the sit-up chair,

said chair consists of a back-support, a holding rod, and an adjustable axle seat,

wherein said adjustable axle seat is disposed on both sides of the chair, pivotally connects the back-support and the holding rod front and rear by pivot connection element on the top surface of the seat and adjusts the angle between the back-support and the holding rod in the range of several sections.

2. The sit-up exercise machine asclaim 1, wherein said underlay consists of a bottom support and a waist support extending backwards from the bottom support.

3. The sit-up exercise machine asclaim 1, wherein said underlay has notches on both sides thereof for grasp.

4. The sit-up exercise machine asclaim 1, wherein said underlay has anti-slip means.

5. The sit-up exercise machine asclaim 3, wherein said waist support is in shape of arc.

6. The sit-up exercise machine asclaim 1, wherein said back-support is retractable.

7. The sit-up exercise machine asclaim 1., wherein said holding rod is retractable.

8. The sit-up exercise machine asclaim 1, wherein said adjustable axle seat can adjust the angle between said back-support and said holding rod in the range of four section.

9. The sit-up exercise machine asclaim 8, wherein the range of the first section angle is within 35°-45°.

10. The sit-up exercise machine asclaim 8, wherein the range of the second section angle is within 55°-65°.

11. The sit-up exercise machine asclaim 8, wherein the range of the third section angle is within 65°-75°.

12. The sit-up exercise machine asclaim 8, wherein the range of the fourth section angle is within 80°-95°.

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