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An exercise apparatus is provided and includes a seat, a curved track, a linker, a backrest, and a replacing force means. The curved track is connected to the seat. A first end of the linker is slidably mounted on the curved track. An end of the backrest is pivotally connected to the seat, and a sec

An exercise apparatus is provided and includes a seat, a curved track, a linker, a backrest, and a replacing force means. The curved track is connected to the seat. A first end of the linker is slidably mounted on the curved track. An end of the backrest is pivotally connected to the seat, and a second end of the linker opposite the first end is pivotally connected to the backrest. An elastic member is used for providing a returning force to return the backrest to a first position.

대표청구항 ▼

1. An exercise apparatus, comprising: a seat;a curved track connected to the seat, wherein the curved track is fixed under the seat and is gradually curved and extended toward a vertical direction;a linker having a first end and a second end, wherein the first end of the linker is slidably mounted o

1. An exercise apparatus, comprising: a seat;a curved track connected to the seat, wherein the curved track is fixed under the seat and is gradually curved and extended toward a vertical direction;a linker having a first end and a second end, wherein the first end of the linker is slidably mounted on the curved track, and a distance between the seat and the first end of linker is changeable;a backrest, wherein an end of the backrest is pivotally connected to the seat, and the second end of the linker is pivotally connected to the backrest; anda replacing force means for providing a returning force to return the backrest to a first position. 2. The exercise apparatus according to claim 1, wherein the curved track is gradually curved and extended upwardly. 3. The exercise apparatus according to claim 1, wherein the curved track is gradually curved and extended downwardly. 4. The exercise apparatus according to claim wherein: the curved track has at least one curved surface; andthe first end of the linker has a saddle mounted on the curved track, the saddle further comprises: at least one rolling wheel pivotally disposed in the saddle and rollably abutted against the curved surface. 5. The exercise apparatus according to claim 1, wherein: the curved track has a curved surface and a plurality of positioning holes formed therethrough;the first end of the linker has a saddle mounted on the curved track the saddle further comprises: a rolling wheel pivotally disposed in the saddle and rollably abutted against the curved surface; anda position-limiting hole formed through the saddle and which can be aligned selectively with any one of the plurality of positioning holes of the curved track;a position-limiting member removably inserted into the position-limiting hole and one of the positioning holes of the curved track. 6. The exercise apparatus according to claim 5, wherein the plurality of positioning holes are located equidistantly. 7. The exercise apparatus according to claim 5, wherein the plurality of positioning holes are located non-equidistantly. 8. The exercise apparatus according to claim 1, wherein the replacing force means is an elastic member interconnected between the seat and the linker. 9. The exercise apparatus according to claim 1, wherein the replacing force means is an elastic member interconnected between the seat and the backrest. 10. The exercise apparatus according to claim 1, wherein: the curved track has a first curved surface facing upwardly, and a second curved surface facing downwardly;the first end of the linker has a saddle slidably disposed on the curved track, the saddle further comprises: a rolling wheel pivotally disposed in the saddle and rollably abutted against the first curved surface; anda pivot pivotally disposed opposing the rolling wheel in the saddle and abutted against the second curved surface. 11. The exercise apparatus according to claim 1, wherein: the curved track has a first lateral surface and a second lateral surface opposing the first lateral surface;the first end of the linker has a saddle slidably disposed on the curved track, the saddle further comprises: a first rolling wheel pivotally disposed in the saddle and rollably abutted against the first lateral surface; anda second rolling wheel pivotally disposed opposing the rolling wheel in the saddle and abutted against the second lateral surface.