Dual-Use Exercising Bike on which a User can Sit and Lie

Abstract

An exercising bike includes a main frame and a rear frame adjustably connected with the main frame. The main frame includes a support pipe having a slideway, a first linkage pivotally mounted on the support pipe, a seat mounted on the first linkage, a second linkage pivotally mounted on the support pipe, a handlebar mounted on the second linkage, and a third linkage pivotally connected with the first linkage and the second linkage. The rear frame includes an adjusting bar retractably mounted on the support pipe, a connecting lever pivotally connected with the adjusting bar and the first linkage, and at least one roller rotatably mounted on the adjusting bar and slidably mounted in the slideway. Thus, the position of the seat can be adjusted so that a user can operate the exercising bike in a sitting or lying posture.

1 . An exercising bike, comprising:
 a main frame; and   a rear frame adjustably connected with the main frame;   wherein the main frame includes:   a support pipe having an inner portion provided with a slideway;   a first linkage pivotally mounted on the support pipe;   a seat mounted on the first linkage to move in concert with the first linkage;   a second linkage pivotally mounted on the support pipe;   a handlebar mounted on the second linkage to move in concert with the second linkage;   a third linkage pivotally connected with the first linkage and the second linkage;   the rear frame includes:   an elongate adjusting bar retractably mounted in the slideway of the support pipe of the main frame;   a connecting lever having a lower end pivotally connected with the adjusting bar and an upper end pivotally connected with the first linkage of the main frame; and   at least one roller rotatably mounted on the adjusting bar and slidably mounted in the slideway of the support pipe of the main frame.   
     
     
         2 . The exercising bike of  claim 1 , wherein the exercising bike further comprises an adjusting mechanism mounted on the support pipe of the main frame and connected with the adjusting bar of the rear frame to move the adjusting bar of the rear frame relative to the support pipe of the main frame. 
     
     
         3 . The exercising bike of  claim 2 , wherein
 the adjusting bar of the rear frame has an inner portion provided with a screw bore;   the adjusting mechanism includes:   a threaded rod rotatably mounted in the slideway of the support pipe of the main frame and screwed into the screw bore of the adjusting bar of the rear frame;   an actuator mounted on the support pipe of the main frame and connected with the threaded rod to rotate the threaded rod relative to the adjusting bar of the rear frame.   
     
     
         4 . The exercising bike of  claim 3 , wherein
 the screw bore of the adjusting bar of the rear frame is movable on the threaded rod of the adjusting mechanism by rotation of the threaded rod;   the adjusting bar of the rear frame is movable relative to the support pipe of the main frame by rotation of the threaded rod.   
     
     
         5 . The exercising bike of  claim 3 , wherein the actuator of the adjusting mechanism consists of a motor and a speed reducer. 
     
     
         6 . The exercising bike of  claim 1 , wherein the exercising bike further comprises a driving mechanism pivotally connected between the support pipe and the first linkage of the main frame. 
     
     
         7 . The exercising bike of  claim 6 , wherein the driving mechanism has a lower portion pivotally connected with the support pipe of the main frame and an upper portion pivotally connected with the first linkage of the main frame. 
     
     
         8 . The exercising bike of  claim 6 , wherein the driving mechanism includes a motor for driving a threaded rod, a hydraulic cylinder or a pneumatic cylinder. 
     
     
         9 . The exercising bike of  claim 1 , wherein the main frame further includes:
 a damping wheel unit mounted on the support pipe;   a front stand mounted on the support pipe;   a mounting bracket mounted on the support pipe to support the first linkage, the second linkage and the damping wheel unit.   
     
     
         10 . The exercising bike of  claim 9 , wherein
 the support pipe of the main frame is arranged in a transverse manner;   the front stand of the main frame is mounted on an end portion of the support pipe and is arranged in a transverse manner;   the damping wheel unit of the main frame is provided with two cranks and two pedals.   
     
     
         11 . The exercising bike of  claim 9 , wherein the first linkage of the main frame has a lower end pivotally connected with the mounting bracket and an upper end pivotally connected with the seat. 
     
     
         12 . The exercising bike of  claim 9 , wherein the second linkage of the main frame has a lower end pivotally connected with the mounting bracket and an upper end pivotally connected with the handlebar. 
     
     
         13 . The exercising bike of  claim 1 , wherein the seat of the main frame is provided with an armrest. 
     
     
         14 . The exercising bike of  claim 1 , wherein
 the rear frame further includes a rear stand mounted on the adjusting bar;   the rear stand of the rear frame is mounted on the second end of the adjusting bar and is arranged in a transverse manner.   
     
     
         15 . The exercising bike of  claim 1 , wherein
 the adjusting bar of the rear frame has a first end movably mounted in the slideway of the support pipe of the main frame and a second end protruding outward from the slideway of the support pipe of the main frame;   the connecting lever of the rear frame is pivotally connected with the second end of the adjusting bar.   
     
     
         16 . The exercising bike of  claim 1 , wherein the connecting lever of the rear frame has an arc-shaped profile. 
     
     
         17 . The exercising bike of  claim 3 , wherein
 the slideway of the support pipe of the main frame has a rectangular cross-sectional profile;   the adjusting bar of the rear frame has a rectangular cross-sectional profile.