An exercise machine applicable for strengthening a user's abdominal muscles is described. The exercise machine can include a base frame to provide ground support, a mounting assembly rotably mounted over the base frame, a backrest assembly movably coupled to the mounting assembly via one or more piv
An exercise machine applicable for strengthening a user's abdominal muscles is described. The exercise machine can include a base frame to provide ground support, a mounting assembly rotably mounted over the base frame, a backrest assembly movably coupled to the mounting assembly via one or more pivot joints for swivel movements along the base frame and a handle assembly adjustably affixed to the backrest assembly to allow a user sitting on the seat pad to induce the swivel movements via the backrest assembly.
대표청구항▼
1. An exercising machine comprising: a base frame to provide ground support, the base frame having a seat pad disposed between a front portion and a rear portion of the base frame;a mounting assembly rotatably mounted via a horizontal rotatable structure over the rear portion of the base frame, the
1. An exercising machine comprising: a base frame to provide ground support, the base frame having a seat pad disposed between a front portion and a rear portion of the base frame;a mounting assembly rotatably mounted via a horizontal rotatable structure over the rear portion of the base frame, the mounting assembly having at least two pivot joints including a swivel pivot joint and a rear pivot joint, the swivel pivot joint having at least two rotatable structures associated with two rotating axes, the two rotating axes including a horizontal axis and a vertical axis, the at least two rotatable structures including the horizontal rotatable structure for rotating around the vertical axis and a vertical rotatable structure for rotating around the horizontal axis, wherein the vertical rotatable structure and the rear pivot joint define a longitudinal direction of the mounting assembly, wherein the horizontal rotatable structure is arranged in the mounting assembly between the vertical rotatable structure and the rear pivot joint along the longitudinal direction of the mounting structure, and wherein the swivel pivot joint allows swivel movements simultaneous rotating around the at least the two rotating axes;a backrest assembly movably coupled to the mounting assembly via the at least one pivot joint for swivel movements along the base frame, the backrest assembly including backrest pad and backrest support structure affixed to the backrest pad, the backrest pad having a front end and a rear end, the backrest support structure coupled with the swivel joint at the front end of the backrest pad to support the swivel movements for the backrest pad; anda handle assembly adjustably affixed to the backrest assembly to allow a user sitting on the seat pad to induce the swivel movements via the backrest pad. 2. The exercising machine of claim 1, wherein the swivel movements include up and down pivoting movements and left and right pivoting movements, the up and down movements rotating around the horizontal axis, and the left and right pivoting movements around the vertical axis. 3. The exercising machine of claim 2, wherein the backrest assembly includes lever bars, wherein front ends of the lever bars are pivotally coupled to the rear pivot joint, and wherein rear ends of the lever bars are pivotally coupled with backrest support structure, the rear ends of the lever bars movable along the backrest support structure to cause the swivel movements around the horizontal axis. 4. The exercising machine of claim 3, wherein the backrest support structure includes track bars and wherein the rear ends of the lever bars are affixed with wheels rollable along the track bars. 5. The exercising machine of claim 3, wherein the backrest support structure includes guide bars and wherein the rear ends of the lever bars are affixed with bearing sleeves slidable along the guide bars. 6. The exercising machine of claim 3, wherein the handle assembly includes handle bars adjustably affixed transversely to the lever bars at the rear pivot joint. 7. The exercising machine of claim 6, wherein the backrest assembly includes a pivot rod detachably affixed to the lever bars at the rear ends of the lever bars, the pivot rod pivotably attached to the rear pivot joint of the mounting assembly, wherein the handle bars are affixed adjustably to both ends of the pivot rod to allow separate angular relationships between the handle bars and the backrest pad. 8. The exercising machine of claim 3, wherein the backrest support structures are affixed with one or more pulleys, wherein the handle assembly includes handle ropes having hand holders, the handle ropes movably arranged through the pulleys, each handle rope affixed to one of the lever bars to allow the lever bars to push up the backrest pad via pulling force via the hand holders. 9. The exercising machine of claim 2, wherein the handle assembly includes handle bars adjustably affixed to the rear ends of the backrest support structure. 10. The exercising machine of claim 2, wherein the handle assembly includes handle belts disposed over front side of the backrest pad, the handle belts adjustably affixed the backrest support structure. 11. The exercising machine of claim 1, further comprising: an adjustable control mechanism to constraint the swivel movements, the adjustable control mechanism comprising a height control adjustably attached to the mounting assembly to provide a stop height support for the rear end of the backrest pad. 12. The exercising machine of claim 11, the adjustable control mechanism further comprising an alignment pin to confine the swivel movements with one of the rotating axes. 13. The exercise machine of claim 12, wherein the mounting assembly includes an upper latching hole, wherein the base frame includes a lower latching hole and wherein rotational positions between the seat pad and the backrest pad are latched when the alignment pin is inserted through both the upper latching hole and the lower latching hole. 14. The exercising machine of claim 11, wherein the mounting assembly includes a position locking structure, wherein the height control includes a position bar having a higher end and a lower end, the position bar pivotally affixed to the position locking structure via the lower end with an adjustable pivoting position, the higher end positioned at an adjustable height corresponding to the adjustable pivoting position to provide the stop height support of the backrest pad. 15. The exercising machine of claim 14, wherein the position locking structure includes apertures circumferentially spaced for the adjustable pivoting position, and wherein the height control includes a height locking pin to engage the position bar and the position locking structure via one of the apertures. 16. The exercising machine of claim 1, wherein the horizontal rotatable structure has a protruding rod and a receiver structure with a center opening, the receiver structure affixed to the base frame, the protruding rod extending into the center opening to allow the mounting assembly to rotate left and right around the base frame. 17. An exercising machine comprising: a base frame to provide floor support, the base frame arranged longitudinally between a front side and a rear side, the base frame including a seat pad affixed on top of the base frame;a pivoting frame rotatably mounted on the rear side of the base frame, the pivoting frame having a backrest assembly, a mounting assembly and a handle assembly, the backrest assembly capable of swivel movements along the base frame, wherein the backrest assembly has a backrest pad affixed to a backrest support structure, the backrest rest support structure pivotally coupled with the mounting assembly,wherein the mounting assembly has at least two rotatable joints including a swivel pivot joint and a rear pivot joint, the swivel pivot joint having a horizontal rotatable structure for rotating around a vertical axis and a vertical rotatable structure for rotating around a horizontal axis, wherein the vertical rotatable structure and the rear pivot joint define a longitudinal direction of the mounting assembly, the horizontal rotatable structure arranged in the mounting assembly between the vertical rotatable structure and the rear pivot joint along the longitudinal direction of the mounting assembly, the base frame engaged with the mounting assembly via the swivel pivot joint for the rotatable mounting to allow angular relationship between longitudinal directions of the seat pad and the backrest pad,wherein the handle assembly is affixed to the backrest support structure to allow a user to make push/pull force to cause the swivel movements of the backrest pad, andwherein the angular relationship allows twisting effects on the user while exercising with the backrest pad via the swivel movements.
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이 특허에 인용된 특허 (7)
Wang Leao (Taichung Hsien TWX), Abdomen exercising apparatus.
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