CN2260045Y - Bicycle - Google Patents

Abstract

The utility model discloses a bicycle of which the power transmission device is improved, and mainly comprises a bicycle body and wheels. A bevel gear is arranged in a casing tube on the lower part of the bicycle body. The bevel gear is simultaneously engaged with bevel gears arranged on the end parts of a left rotary shaft and a right rotary shaft. The outer ends of the left rotary shaft and the right rotary shaft vertical to shaft bodies are connected with a left pedaling rod and a right pedaling rod. Pedals are respectively positioned on the left pedaling rod and the right pedaling rod. Chains which are connected and flywheels are driven by a swing rod and a telescopic auxiliary swing rod which are arranged on the pedals to rotate, and the wheels of the bicycle of which the power transmission device is improved are driven to rotate. The bicycle of which the power transmission device is improved has the advantages of large speed regulating range, convenient speed regulation, labor saving, etc.

Description

A kind of bicycle

The utility model discloses a kind of bicycle that improves structure, specifically is the structural development of power transmission.

The available technology adopting solo flight, chain wheel chain and foot-operated realization power transmission, though the speed-changing mechanism design is arranged, its structure is also very complicated, speed adjustable range is limited, therefore, has tangible limitation during use, in addition, the solo flight bicycle all can be moveed backward, when riding when speeding on sloping road, on the car loading more, bicycle will the accident that the slope is gone occur falling down.

The purpose of this utility model is to design the bicycle that a kind of speed-changing mechanism is simple and speed adjustable range is big, its can effectively avoid moveing backward generation of phenomenon.

For achieving the above object: the technical solution of the utility model is: a kind of bicycle, it comprises car body and wheel, be provided with bevel gear in the sleeve pipe of car body bottom, its meshes with the high bevel gear of establishing of end institute of left and right rotating shaft simultaneously, the outer end of left and right rotating shaft and connect left and right foot-driven lever perpendicular to axle body, the foot-operated outer end that lays respectively at left and right foot-driven lever, the end of left and right rotating shaft also is connected with fork, fork is provided with telescopic pair of fork, and their end is arranged on linking to each other with two flywheel ingear chains of rear axle with the trailing wheel both sides.

Compared with prior art, the utility model adopts left and right foot-operated exerting all one's strength to be with left and right fork swing, drives to sail chain and drive flywheel driving torque separately, promotes trailing wheel and rotates, and two flywheels are installed relatively, and trailing wheel can't be reversed, and can realize that the unidirectional of bicycle advances.In addition, the utility model adopt to be paid stretching of fork and is changed transmitting ratio, so speed adjustable range is big, and speed governing is convenient.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an A-A cutaway view among Fig. 1;

Fig. 3 is the B-B cutaway view among Fig. 1;

Embodiment: referring to Fig. 1, Fig. 2, be provided with bevel gear (2) in the sleeve pipe of car body bottom (1), its while and a left side, right spindle (5), (6) bevel gear of end (3), (4) engagement, a left side, right spindle (5), (6) outer end vertically connects a left side, right crus of diaphragm treadle (7), (8), a left side, right threading (9), (10) lay respectively at a left side, right crus of diaphragm treadle (7), (8) outer end, a left side, right spindle (5), (6) end also is connected with fork (11), (12), fork (11), (12) be provided with telescopic pair of fork (13), (14), their end and chain (15), (16) link to each other chain (15), (16) with the trailing wheel both sides and be arranged on two flywheels engagement on the rear axle.

In conjunction with Fig. 3, pay fork (13), (14) be the arcuation bar, its radian and fork (11), (12) coincide, this arcuation design be for guarantee a pair fork (13), when stretch (14), chain (15), (16) still can be meshed well with two flywheels.Pay fork (13), (14) go up in set guiding slotted eye flexible in fork (11), (12), wire drawing (17), (18) that link to each other with a pair fork (13), (14) carry over the tiltedly big thick stick of car body and extend to the handlebar arm rest, and link to each other with the handrail overcoat, when rotating the handrail overcoat, fork (13) is paid in wire drawing (17), (18) pulling, (14) are flexible.

In the utility model, if with the trailing wheel reversing, the also reversing thereupon of left and right flywheel, direction conv are because left and right axle hand of rotation is opposite, so the interlocking of moveing backward.In some cases, can't move backward also has weak point, and this problem can solve by following scheme, and flywheel and wheel hub split processing connect with movable spline between the two, so that can disconnect with power when reversing, thereby realization is moveed backward.

Following summary motion process of the present utility model: when left threading (9) when stepping on, bevel gear (3) clockwise rotates (facing from the end face direction), driving bevel gear (2) rotates, and then driven gear (4) and right spindle (6) backward rotation, right threading (10) just in time rises, as it is just opposite with above-mentioned situation to step on right threading (10) process, and left and right foot-operated (9), (10) are stepped on and once finished the one action circulation.

Claims (2)

1, a kind of bicycle, it comprises car body and wheel, it is characterized in that: be provided with bevel gear (2) in the sleeve pipe of car body bottom (1), its while and a left side, right axle (5), (6) bevel gear of end (3), (4) engagement, a left side, right spindle (5), (6) outer end vertically connects a left side, right crus of diaphragm treadle (7), (8), foot-operated (9), (10) lay respectively at a left side, right crus of diaphragm treadle (7), (8) outer end, a left side, right spindle (5), (6) end also is connected with fork (11), (12), fork (11), (12) be provided with telescopic pair of fork (13), (14), their end and trailing wheel both sides are arranged on two flywheel ingear chains (15) on the rear axle, (16) link to each other.

2, bicycle according to claim 1, it is characterized in that: pair fork (13), (14) are the arcuation bar, its radian and fork (11), (12) coincide, pay fork (13), (14) go up in set guiding slotted eye flexible in fork (11), (12), wire drawing (17), (18) that link to each other with a pair fork (13), (14) carry over the tiltedly big thick stick of car body and extend to the handlebar arm rest, and link to each other with the handrail overcoat, when rotating the handrail overcoat, fork (13) is paid in wire drawing (17), (18) pulling, (14) are flexible.

Images