CN2058660U

CN2058660U - Miniature speed-unchangeable cycle

Info

Publication number: CN2058660U
Application number: CN 89217113
Authority: CN
Inventors: 陈锦锟
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-09-05
Filing date: 1989-09-05
Publication date: 1990-06-27

Abstract

The utility model discloses a miniature speed-unchangeable cycle, relating to a non-motor vehicle, being suitable for non-motor vehicle manufacturing and mechanical processing industries. Due to the adoption of the improved transmission device, namely, a flywheel is displaced on the center of the chain disk and is combined with the chain disk into integration to be a driving tooth disk, and the original position of the flywheel is added with a tooth disk to be a driven gear, the utility model is not limited by a flywheel structure and reduces the number of the driven tooth disk so as to achieve the purposes of raising speed or reducing wheels and keeping the original running speed. The utility model has the advantages of simple structure, convenient operation, high speed, small size, light weight and safe and comfortable running and is not easy to make a human body generate fatigue.

Description

Miniature speed-unchangeable cycle

The utility model is a kind of non-motorized vehicles, is suitable for non-power-driven vehicle manufacturing and mechanical processing industry.

Non-power-driven vehicle will play an important role in the whole vehicle, because it is simple in structure, easy to operate, volume is little, cost is low, driving safety and favourable people's is healthy, and energy savings, characteristics such as pollution abatement, therefore non-power-driven vehicle occurs in a large number on the market, and various in style, as miniature bike, speeding-up bike or the like, but, it is slow that the bicycle that emerges in large numbers on these markets exists moving velocity, and volume-diminished is subjected to the restriction of flywheel structure again, and when running at high speed, need to consume very big muscle power, make people's susceptible fatigue etc.

The utility model is exactly to provide a kind of both reduced volumes at the above-mentioned problem that proposes, and can improve novel guarantor's speed miniature bike of moving velocity again.

Structural principle of the present utility model is told in detail with reference to accompanying drawing one, accompanying drawing two, accompanying drawing three, accompanying drawing four.

Accompanying drawing 1 is a constitution diagram of the present utility model;

Accompanying drawing 2 is that unidirectional active fluted disc structure of the present utility model is cutd open figure;

Accompanying drawing 3 is that the structure of two-way ring gear of the present utility model is cutd open figure;

Accompanying drawing 4 is that the fluted disc structure of tape spool of the present utility model is cutd open figure.

With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, structural principle of the present utility model is directly proportional with the driven gear number of teeth that directly drives its rotation according to the radius of bicycle driving wheel, be that wheel dwindles, the driven gear number of teeth reduces in proportion, and when the driving gear number of teeth was constant, the driven gear number of teeth reduced, vehicle wheel rotational speed improves, instead then in the constant situation of power, dwindle wheel, kept the speed of a motor vehicle. Therefore the utility model adopts above-mentioned relation exactly, improve at transmission device, foot-operated chain wheel (2) center of its flywheel (1) dislocation and chain wheel (2) are combined into an integral body make unidirectional driving gear disc, this Case of fly-wheel (3) is to be welded and fixed with chain wheel (2), flywheel inner ring (4) and pedal crank (5) be threaded fixing; Be combined into holistic fluted disc with taper sheath (7) in the increase by of flywheel (1) original position with wheel drum (6) by the driving chain drive, this fluted disc (3) is two-way passive fluted disc, the fluted disc with taper sheath of this two-way passive fluted disc (7) is and wheel drum (6) machining screw, be rotatably connected, overlap again Upper shaft sleeve (8) and be connected with vehicle frame, thereby just can not be subjected to the restriction of flywheel structure, reach and reduce the driven gear number of teeth, improve the speed of a motor vehicle or dwindle wheel, keep former travel speed. The utility model also can be whole with unifications such as the car drum (10) that does not contain bearing and fastening nuts (11) for the fluted disc (9) of processing tape spool with two-way passive fluted disc, the fluted disc of its tape spool (9) is to adopt square plug tenon (12), socket (13) to be connected with the car drum (10) that does not contain bearing, axletree (14) is connected with vehicle frame bearing (15), can reduce to 5 numbers of teeth thereby reach passive Teeth Number, obtain more miniature bicycle.

The utility model is owing to employing conversion flywheel position and increase passive fluted disc, thereby is not subjected to the restriction of flywheel structure, reduces passive Teeth Number, reaches raising speed or dwindles wheel, keeps former travel speed. The utlity model has simple in structure, easy to use, and travel speed height, volume is little, and is in light weight, driving safety, comfortable is difficult for producing human-body fatigue etc., the vehicles that it is adult and children, the women is desirable.

Embodiment one of the present utility model is that the 28 type bicycles of 35.5cm are example with the radius of wheel, changes its driving device into the utility model device, and 20 numbers of teeth of ring gear are kept to 8 numbers of teeth, according to radius and the proportional r of the passive number of teeth _Newly≈ 14.2 is constant as moving velocity in=(35.5 * 8)/20, and promptly radius of wheel can narrow down to about 14.2cm, does not dwindle as radius of wheel, and speed can improve 1.5 times so.

Claims

1, a kind of bicycle, comprising vehicle frame and the driving device that is installed on the vehicle frame, brake gear and wheel etc., it is characterized in that driving device is foot-operated chain wheel (2) center of flywheel (1) dislocation to be combined into an integral body with chain wheel (2) make unidirectional active fluted disc, and on flywheel (1) original position, increase and fluted disc (7) that wheel drum (6) is combined into holistic band taper sheath is made two-way passive fluted disc etc. and constituted.

2, according to the described driving device of claim 1, it is characterized in that two-way passive fluted disc can be by with the fluted disc (9) of tape spool with do not contain the car drum (10) of bearing and fastening nut (11) etc. is formed, this axle (14) is connected with vehicle frame bearing (15).

3, according to the described driving device of claim 1, the foot-operated chain wheel (2) that it is characterized in that unidirectional active fluted disc is to be fixed as an integral body with Case of fly-wheel (3), and flywheel inner ring (4) is the one that is threaded with foot-operated crank (5).