CN2293510Y

CN2293510Y - Direct-pedal double-tangent bicycle

Info

Publication number: CN2293510Y
Application number: CN97213761U
Authority: CN
Inventors: 赵祝元
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-04
Filing date: 1997-04-04
Publication date: 1998-10-07
Anticipated expiration: 2007-04-04

Abstract

The utility model discloses a direct-pedal double-tangent bicycle, which is mainly composed of a bicycle frame, wheels, handlebars, a front fork of the bicycle, a saddle, a circle-arc tank-shaped rod, a triangular pedal frame, pedals, a double chain wheel, a chain wheel, a part with the same shaft with a bevel gear, etc., wherein, the circle-arc tank-shaped rod is fixed on the bicycle frame; the triangular pedal frame is arranged between a middle shaft and the circle-arc tank-shaped rod. The utility model overcomes the disadvantage of lower efficiency of a rotary pedal bicycle; the angle of each pedal can be adjusted for adapting to the requirements of different persons riding the bicycle; therefore, the utility model has the optimum efficiency. Because the utility model adopts a double-tangent driving structure of the pedals and the chain wheel and of a bevel gear and a chain disk, the utility model can sufficiently exert the potentiality of labour saving of the direct-pedal bicycle.

Description

Directly step on formula bitangent bicycle

The utility model relates to a kind of bicycle.

At present, bicycle of the prior art generally all is rotary pedals formula bicycle or straight line tread bicycle, for rotary pedals formula bicycle, its shortcoming is: because moment constantly changes when foot-operated, the part manpower is wasted in vain done many idle works, can not give full play to manpower effectiveness, thereby make the people feel tired easily when using; And the existing formula bicycle of directly stepping on, though reached best labor-saving effect in theory, but because its stretcher can not be adjusted angle, thereby can not satisfy situation and the ground-surface situation angle of at any time adjusting stretcher of cyclist according to self, make it to reach best labour-saving state by bike, thereby of the prior art directly to step on its result of use of formula bicycle still be not ideal enough.

The purpose of this utility model is: provide a kind of can give full play to human efficiency by bike, and can by the cyclist according to s own situation and ground-surface situation adjust at any time stretcher angle, make it to reach the formula of directly the stepping on bitangent bicycle of best laborsaving state by bike.

The utility model is to constitute like this: it is mainly by vehicle frame (1), wheel (2), handlebar (3), car front fork (4), seat (5), circular arc grooved bar (6), triangle running-board bracket (7), stretcher (11), duplicate sprocket (12), the coaxial parts parts such as (13) of sprocket wheel and bevel gear are formed, the lower end of the following steel pipe 1 of vehicle frame (1) is higher than the stationkeeping of axis (8) on steel pipe II, between steel pipe II and after poppet III, be fixed with stirrup IV, on vehicle frame (1), be fixed with circular arc grooved bar (6), one end of triangle running-board bracket (7) is contained on the axis (8), the other end is connected with circular arc grooved bar (5) by manual positioning device (9), there is chute (10) two straight-bar sides at triangle running-board bracket (7), two stretchers (11) are contained in chute (10) lining of triangle running-board bracket (7) two sides respectively, on the top of triangle running-board bracket (7) duplicate sprocket (12) is housed, the coaxial parts of sprocket wheel and bevel gear (13) are housed in its underpart, chain (14) is enclosed within on the sprocket wheel of duplicate sprocket (12) and its two ends are connected with stretcher (11) respectively, chain (15) is enclosed within on the sprocket wheel of another sprocket wheel of duplicate sprocket (12) and parts (13), bevel gear (24) and chain sprocket (23), and bevel gear (15) and chain sprocket (17) are respectively and for one and be separately fixed at the two ends of axis (8), the bevel gear of parts (13) and bevel gear (24) and (16) engagement, two ends are fixed with flywheel (18) and (19) respectively on the bicycle rear shaft rotating cylinder, chain (20) is enclosed within on chain sprocket (23) and the flywheel (18), chain (21) is enclosed within on chain sprocket (17) and the flywheel (19), and level indication bubbler tube (22) is housed on circular arc grooved bar (6).

The utility model compared with prior art, not only overcome the low shortcoming of rotary pedals formula bicycle efficiency, and keeping having increased the advantage that to adjust the stretcher angle on the existing basis of directly stepping on formula bicycle advantage, so not only can adapt to difference human needs by bike, make it to reach optimum efficiency, and owing to adopted the bitangent formula drive mechanism of pedal and sprocket wheel, bevel gear and chain drum, thereby the potentiality of directly stepping on the formula bicycle labor saving have been given full play to.During use, the cyclist can be according to the situation of oneself or according to the indicated road gradient situation of level indication bubbler tube (22), press manual positioning device (9), so just can adjust the angle of triangle running-board bracket (7) arbitrarily, make the angle of its pedal stretcher (11) reach best laborsaving state.

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is that the A of accompanying drawing 1 is to the local structure scheme drawing;

Accompanying drawing 3 is that the B of accompanying drawing 1 is to the local structure scheme drawing.

Embodiment of the present utility model: wheel (2), handlebar (3), the finished part of bicycle in the prior art can be adopted in car front fork (4) and seat (5), the lower end of the following steel pipe I of vehicle frame (1) is fixed on the steel pipe II in the position that is higher than axis (8), fixing stirrup IV between steel pipe II and the after poppet III, going up with axis (8) at vehicle frame (1) is that circular arc grooved bar (6) is fixed in the center of circle, one end of triangle running-board bracket (7) is contained on the axis (8), and make it go up rotation at axis (8), load onto manual positioning device (9) earlier at the other end, then it is connected with circular arc grooved bar (6) by manual positioning device (9), chute (10) is produced in two straight-bar sides at triangle running-board bracket (7), two stretchers (11) are contained in chute (10) lining of triangle running-board bracket (7) two sides respectively, load onto duplicate sprocket (12) on the top of triangle running-board bracket (7), load onto the coaxial parts of sprocket wheel and bevel gear (13) in its underpart, chain (14) is enclosed within on the sprocket wheel of duplicate sprocket (12) and and is connected with stretcher (11) respectively its two ends, chain (15) is enclosed within on the sprocket wheel of another sprocket wheel of duplicate sprocket (12) and parts (13), earlier with bevel gear (24) and chain sprocket (23), and bevel gear (16) and chain sprocket (17) are respectively and be one, two ends that the bevel gear that merges into a single whole and chain sprocket are separately fixed at axis (8) again, make bevel gear and bevel gear (24) and (16) engagement of parts (13), fix flywheel (18) and (19) respectively at two ends on the bicycle rear shaft rotating cylinder, chain (20) is enclosed within on chain sprocket (23) and the flywheel (18), chain (21) is enclosed within on chain sprocket (17) and the flywheel (19), loads onto level indication bubbler tube and (22) on circular arc grooved bar (6).

Claims

1, a kind of formula bitangent bicycle of directly stepping on, it comprises wheel (2), handlebar (3), car front fork (4), seat (5), it is characterized in that: the lower end of the following steel pipe I of vehicle frame (1) is higher than the stationkeeping of axis (8) on steel pipe II, between steel pipe II and after poppet III, be fixed with stirrup IV, on vehicle frame (1), be fixed with circular arc grooved bar (6), one end of triangle running-board bracket (7) is contained on the axis (8), the other end is connected with circular arc grooved bar (5) by manual positioning device (9), there is chute (10) two straight-bar sides at triangle running-board bracket (7), two stretchers (11) are contained in chute (10) lining of triangle running-board bracket (7) two sides respectively, on the top of triangle running-board bracket (7) duplicate sprocket (12) is housed, the coaxial parts of sprocket wheel and bevel gear (13) are housed in its underpart, chain (14) is enclosed within on the sprocket wheel of duplicate sprocket (12) and its two ends are connected with stretcher (11) respectively, chain (15) is enclosed within on the sprocket wheel of another sprocket wheel of duplicate sprocket (12) and parts (13), bevel gear (24) and chain sprocket (23), and bevel gear (16) and chain sprocket (17) are respectively and for one and be separately fixed at the two ends of axis (8), the bevel gear of parts (13) and bevel gear (24) and (16) engagement, two ends are fixed with flywheel (18) and (19) respectively on the bicycle rear shaft rotating cylinder, chain (20) is enclosed within on chain sprocket (23) and the flywheel (18), and chain (21) is enclosed within on chain sprocket (17) and the flywheel (19).

2, the formula bitangent bicycle of directly stepping on according to claim 1 is characterized in that: level indication bubbler tube (22) is housed on circular arc grooved bar (5).