An exercise machine applicable for strengthening a user's abdominal muscles is described. The exercise machine can include a base frame having a seat pad, a front leg and a rear leg to provide ground support. A mounting assembly a front pivot joint and a rear pivot joint may be rotably mounted on th
An exercise machine applicable for strengthening a user's abdominal muscles is described. The exercise machine can include a base frame having a seat pad, a front leg and a rear leg to provide ground support. A mounting assembly a front pivot joint and a rear pivot joint may be rotably mounted on the base frame. A backrest assembly including a backrest pad, lever bars and backrest support bars can be pivotally coupled to the mounting assembly. The front ends of the backrest support bars can be pivotally coupled to the front pivot joint. The front ends of the level bars can be pivotally coupled to the rear pivot joint. The swivel movements can be controlled via a adjustable control mechanism including a height control adjustably attached to the mounting assembly to provide a stop height support of the backrest pad at the rear end of the backrest bars.
대표청구항▼
1. An exercising machine comprising: a base frame having a seat pad, a front leg and a rear leg, the seat pad elevated with the front leg and rear legs to provide ground support;a mounting assembly rotatably mounted on the base frame over the rear leg a rotatable structure, the mounting assembly hav
1. An exercising machine comprising: a base frame having a seat pad, a front leg and a rear leg, the seat pad elevated with the front leg and rear legs to provide ground support;a mounting assembly rotatably mounted on the base frame over the rear leg a rotatable structure, the mounting assembly having a front pivot joint and a rear pivot joint, the rotatable structure arranged between the front pivot joint and the rear pivot joint along a longitudinal direction of the mounting assembly, the rotatable structure to allow the mounting assembly to rotate transversely to the front pivot joint;a backrest assembly pivotally coupled to the mounting assembly via the front pivot joint and the rear pivot joint for swivel movements along the base frame, the backrest assembly including a backrest pad, lever bars and backrest support bars affixed to the backrest pad, front ends of the backrest support bars pivotally coupled to the front pivot joint, front ends of the lever bars pivotally coupled to the rear pivot joint; andan adjustable control mechanism to control the swivel movements to allow a user resting against the backrest pad to cause the swivel movements while sitting on the seat pad, the adjustable control mechanism including a height control adjustably attached to the mounting assembly to provide a stop height support of the backrest pad at the rear end of the backrest bars. 2. The exercising machine of claim 1, wherein the mounting assembly includes an upper latching hole, wherein the base frame includes a lower latching hole, and wherein the adjustable control includes an alignment pin to latch rotational positions between the seat pad and the backrest pad when the alignment pin is inserted through both the upper latching hole and the lower latching hole. 3. The exercising machine of claim 2, wherein the backrest pad and the seat pad are substantially aligned longitudinally to confine the swivel movements to pivot between the front legs and the rear legs when the upper latching hole and the lower latching hole are latched via the alignment pin. 4. The exercising machine of claim 1, wherein the mounting assembly further includes a position locking structure near the rear pivot joint, 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. 5. The exercising machine of claim 4, 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. 6. The exercising machine of claim 1, wherein the base frame includes a receiver structure having a center opening, wherein the mounting assembly has a protruding rod extending into the center opening to allow the mounting assembly to rotate around the receiver structure of the base frame. 7. The exercising machine of claim 1, wherein the backrest assembly further includes backrest support brackets transversely affixed to the backrest pad, wherein the backrest support bars are engaged with the support brackets along a back surface of the backrest. 8. The exercising machine of claim 1, further comprising handle bars adjustably affixed transversely to the lever bars to enable the swivel movements. 9. The exercising machine of claim 8, 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. 10. 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; anda pivoting frame rotatably mounted on the rear side of the base frame via a rotatable structure, the pivoting frame having a backrest assembly, a mounting assembly and handle bars, wherein the backrest assembly has a backrest pad and lever bars, the backrest pad pivotally coupled with the level bars,wherein the mounting assembly has a front pivot joint and a rear pivot joint, the backrest pad pivotally coupled with the mounting assembly at the front pivot joint, the lever bars pivotally coupled with the mounting assembly at the rear pivot joint, the rotatable structure arranged between the front pivot joint and the rear pivot joint along a longitudinal direction of the mounting assembly, the rotatable structure to rotationally engage with the base frame for the rotatable mounting to allow an angular relationship between longitudinal directions of the seat pad and the backrest pad,wherein the handle bars are transversely affixed to the lever bars to allow a user to make push/pull force to cause the backrest pad to pivot around the front pivot joint, andwherein the angular relationship allows twisting effects on the user while exercising with the backrest pad pivoting around the first pivot joint. 11. An exercising machine comprising: a base frame having a seat pad, a front leg and a rear leg, the seat pad elevated with the front leg and rear leg to provide round support;a mounting assembly rotatably mounted to the base frame over the rear leg via a rotatable structure, the mounting assembly having at least two pivot joints, the rotatable structure arranged between the at least two pivot joints to along a longitudinal direction of the mounting assembly, the rotatable structure to allow the mounting assembly to rotate transversely to the pivot joints; anda 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 a backrest pad and handle bars, wherein the handle bars allow a user resting against the backrest pad to control the swivel movements while sitting on the seat pad. 12. The exercising machine of claim 11, wherein the swivel movements include multi-dimensional rotational motions of the backrest assembly relative to the base frame. 13. The exercising machine of claim 12, wherein the rotational motions include up down pivoting with left right twisting.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (7)
Wang Leao (Taichung Hsien TWX), Abdomen exercising apparatus.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.