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Problems solved by technology
Method used
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Benefits of technology
[0010] Another object of the present invention is to provide a sit-up board, which is foldable and is lightweight, thus being easy to store and move.
[0023] According to another embodiment of this invention, each of the first and second boards may comprise a plurality of parts, and the parts may be coupled to each other via coupling rods. Such a construction allows all components to be separated from each other, thus minimizing the volume of the sit-up board when it is stored, moved, or sold.
Problems solved by technology
Modern people who sit for a long time and do not exercise regularly face an increased risk of ruptured disks or abdominal obesity.
However, the handstand machine is problematic in that it is impossible to exercise other body parts.
Further, since the volume of the handstand machine is large, it is difficult to store and move.
Furthermore, the handstand machine is expensive.
However, the conventional sit-up board is disadvantageous in that it is impossible to exercise the abdominal region, the arms, the legs, etc. other than the upper part of the belly.
Method used
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first embodiment
[0037]FIG. 2 is a perspective view of a sit-up board, according to the present invention, FIG. 3 is a perspective view of the sit-up board of FIG. 2, when the sit-up board is unfolded, and FIG. 4 is a bottom perspective view of the sit-up board of FIG. 3.
[0038] As shown in the drawings, the sit-up board 100 of this invention includes a first board 110, a second board 120, and a guy cable 160. The first board 110 has the shape of a rectangular plate, and a user's torso rests on the first board 110. The second board 120 is coupled to the first board 110 via a hinge unit 130 to rotate downwards, with the lower part of the body resting on the second board 120. Further, the guy cable 160 penetrates an end of each of the first and second boards 110 and 120, and supports the first and second boards 110 and 120 at a predetermined angle.
[0039] A tension spring 112, which is an elastic member, is longitudinally provided along a central portion in the first board 110. Further, three pairs of ...
second embodiment
[0065] Particularly, shown in FIG. 8, each of the first and second boards 210 and 220 comprises a plurality of parts that are coupled to each other via the coupling rods 212 and 222. Such a construction allows all components to be separated from each other, thus minimizing the volume of the sit-up board when it is stored, moved, or sold.
[0066] Hereinafter, the third embodiment of the present invention will be described with reference to FIGS. 9 and 10. FIG. 9 is a perspective view of a sit-up board, according to the third embodiment of this invention, and FIG. 10 is a bottom perspective view of the sit-up board shown in FIG. 9, when the sit-up board is unfolded.
third embodiment
[0067] As compared to other embodiments of this invention, the sit-up board of the third embodiment is characterized in that tensions springs 312 are installed on both left and right sides on the lower surface of a first board 310. Such a construction affords a firm structure, in comparison with the sit-up board having one tension spring, and in addition, allows the left and right parts of the body to be separately exercised.
[0068] Further, the sit-up board of this embodiment is provided with a pair of extension cables 316 that function to extend the tension springs 312, and a second board 320 is not provided with a tension spring. This simplifies the construction of the sit-up board, thus simplifying a manufacturing process and reducing manufacturing costs.
[0069] Reference numeral 400 of FIG. 9 denotes a pulling strap which is held by a user, when the spine is treated, sit-ups are done, or the torso is raised. Support balls 410 are provided at several places on the pulling strap 4...
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Abstract
Disclosed herein is a sit-up board. The sit-up board includes a first board (110), a second board (120), and a guy cable (160). At least one tension spring is provided on a lower surface of the first board. At least one extension cable, which is coupled to an end of the tension spring and extends the tension spring, is drawn to the upper surface of the first board along a plurality of guide units provided on the lower surface of the first board. The second board is coupled to the first board via a hinge unit in such a way as to rotate downwards, with a foot support being detachably mounted to the second board. The guy cable passes through ends of the first and second boards, and supports the first and second boards at a predetermined angle. This invention facilitates a wide variety of exercises.
Description
TECHNICAL FIELD [0001] The present invention relates, in general, to a sit-up board and, more particularly, to a sit-up board, which facilitates a wide variety of exercises and has a simple structure. BACKGROUND ART [0002] Modern people who sit for a long time and do not exercise regularly face an increased risk of ruptured disks or abdominal obesity. In order to solve the problem, various kinds of exercise equipment for treating the spine or strengthening abdominal muscles have been developed. [0003] A handstand machine and a sit-up board are representative of exercise equipment for treating the spine or strengthening abdominal muscle. [0004] The handstand machine is configured to hold a user's ankles and allow the user to do a handstand. The handstand machine is useful to treat the spine and promote blood circulation. However, the handstand machine is problematic in that it is impossible to exercise other body parts. Further, since the volume of the handstand machine is large, it ...
Claims
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Application Information
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