CN2378556Y

CN2378556Y - Fan for bicycle

Info

Publication number: CN2378556Y
Application number: CN 98247884
Authority: CN
Inventors: 董宝来
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-17
Filing date: 1998-12-17
Publication date: 2000-05-17
Anticipated expiration: 2008-12-17

Abstract

The utility model belongs to a bicycle accessory for creating a simple cooling condition for a rider in hot seasons. A fan takes power from the rear wheel of a bicycle, a friction wheel and a shaft of the fan are arranged on a friction wheel shaft bracket and is arranged at the rear frame position of the bicycle by a friction wheel bracket, and rotating power generated by friction is transferred to a fan head arranged at a front handle via a flexible shaft. A switch of the fan is operated in the way of shifting a hand wheel and a pull wire, an impeller and a shield are both arranged on the bracket, and the wind of the fan impeller is blown to the face of a rider through the transmission of the friction and the flexible shaft. The utility model creates a simple cooling condition, and provides obvious comfort.

Description

The bicycle fan

The utility model belongs to a kind of annex on the bicycle, and it is specifically related to a kind of structure of taking from the fan of bicycle power.

As everyone knows, bicycle is a kind of means of transportation of popularizing very much, and what the walking of car load was all leaned on is manpower, and long-distance running itself is very tired thing, during the broiling summer in the cyclist feel that more stewing heat is hard to bear, the arduous condition of this kind still can't overcome at present.

The purpose of this utility model is for making the hard to bear hard situation of cyclist's hot season special this programme---the bicycle fan that proposes that improves, the power of these parts is taken from vehicle itself, the rotation of cycle wheel is passed to preceding last mounted fan, face to the cyclist sends slow wind slowly here, it is provided with control switch, can control voluntarily as required, create a kind of condition of cooling for the cyclist.

By as above design, the feature of the bicycle fan that this programme provided is: it is by dynamic friction and drive part, switching control section and fan head part are formed, its dynamic friction and drive part are by scaffold, friction wheel support, friction wheel axle, the friction wheel axle support, torsion spring is formed, friction wheel axle is installed on the friction wheel axle support, be relation movingly between the two, its upper end is the wheel that has the decorative pattern of strengthening friction, the spindle nose of lower end has inner square hole, axle bracket is by bearing pin and links with friction wheel support, torsion spring is installed on the friction wheel support by pin, spring stress makes the lower end of friction wheel axle support push inside to, on the friction wheel axle support, also extend a pull lever, its drive part adopts the form of flexible axle, the connection that matches with the square hole of friction wheel axle lower end of the square toes of flexible axle axle core rear end; Its switching control mechanism is formed by moving handwheel, backguy and damping spring, move handwheel be installed in before last, the front end of its backguy is fixed on the handwheel, the other end hangs over the termination of pull lever by damping spring; Its fan head partly is made up of support, fan cover, impeller, impeller shaft, impeller shaft support, its support is fastened on preceding last, its impeller shaft support is rack-mount, impeller shaft is installed in the impeller shaft support between the two for movingly, impeller and impeller shaft are the relation of key connecting, there is a square hole lower end of impeller shaft, and its fan cover is fixed on the support, and the front end of driving snake cooperates connection with the square hole of impeller shaft below.

In this programme, there is a flexible axle fitting seat concentric with the impeller shaft support below of support, and it is a middle big screw with holes, and uses scyewed joint between support, and the nut of flexible axle front end connects with fitting seat.

Adopt this programme can embody following superiority: 1. this bicycle fan is to obtain power by the friction with the rotation trailing wheel, form with flexible axle passes forwards, the fan head of fan is contained in preceding last, wind just in time blows the face the cyclist, feel more comfortable during the broiling summer, improved the original arduous condition of cyclist; 2. the working state of this fan is to be controlled by the switch that hand is removed, and is connected on the pull lever of friction wheel axle support by crossing backguy and damping spring, can grasp its convenient operation and control flexibly according to temperature conditions and residing ground environment; 3. it is simple in structure, low cost of manufacture, can create suitable cooling condition for the cyclist, is suitable for making and promoting the use of in batches.

Fig. 1 is the schematic appearance of this programme.

The structural representation of Fig. 2, Fig. 3 friction driving and control section, Fig. 3 are the side views of Fig. 2.

Fig. 4, Fig. 5 are the structural representations of fan head part, and it is to use in the form of preceding handle for flat, and Fig. 4 is Fig. 5 side view.

Fig. 6, Fig. 7 are the structural representations of another kind of fan head, and it is to use at preceding handle is the form of goat's horn handle, and Fig. 7 is the side view of Fig. 6.

Fig. 8, Fig. 9 are the structural representations of moving handwheel, and Fig. 9 is the side view of Fig. 8.

The embodiment of existing accompanying drawings this programme.This bicycle fan is to rotate by the flexible axle drive fan from the power that trailing wheel is obtained rotation, and wind is delivered to cyclist's face, in the season of sweltering heat the cyclist is created good comfort conditions.The wheel 6 that plays rubbing action of its friction and drive part is contained in the upper end of friction wheel axle 3, friction wheel axle is contained in the friction wheel axle support 5, both are relations movingly, the friction wheel axle support is installed on the friction wheel support 2 by bearing pin 7, be installed in the vehicle frame place at trailing wheel position through scaffold 1, on the friction wheel axle support, also extend a pull lever 4, a square hole is arranged below friction wheel axle, cooperate with the square shaft connection of flexible axle 9 spindle noses.Its switching control section is formed by moving handwheel 12, backguy 10 and damping spring 11, moves handwheel and is installed in before the bicycle last, and the front end of backguy is fixed on to be moved on the handwheel, and its rear end hangs over the termination of pull lever by damping spring 11.Impeller 18 key connecting of its fan head part are on impeller shaft 16, impeller shaft is contained in the impeller shaft support 15 movingly, the impeller shaft support is fixedly mounted on the support 14, fan cover 17 also is fixedly mounted on the support, a flexible axle fitting seat 13 concentric with impeller shaft is arranged in the support bottom, its big screw with holes in the middle of being, it and support scyewed joint, the nut of flexible axle head and fitting seat are also used scyewed joint.According to the difference of bar structure form before the bicycle, this programme provides the support of two kinds of fan head parts, and a kind of being applicable to put down handle, and another kind is applicable to the goat's horn handle.

The user can control handwheel switch according to the difference of ambient temperature and pavement conditions.By backguy and damping spring friction wheel is contacted with rear tyre when moving handwheel, the situation of dynamics differentiated friction transmission of moving handwheel is also different, makes the revolution of fan also be not quite similar.Through rough calculation, when general middling speed is advanced the axis wheel disc pedal 40 circles/minute, the diameter of friction wheel is 12mm, the diameter of 26 inches bicycle rear friction portions is 630mm, velocity ratio between the axis rear axle is 2.3, if when friction driving does not throw switch fully, its blast fan will have 4000 rev/mins revolution, deliver to the preceding wind energy of face and make the people that tangible comfortable feel be arranged.The pilot sample of this programme proves through running experiment: it has simple in structure, favorable working performance, easy to operate and advantage of low manufacturing cost.

Claims

1. bicycle fan, it is characterized in that it is by dynamic friction and drive part, switching control section and fan head part are formed, its dynamic friction and drive part are by scaffold (1), friction wheel support (2), friction wheel axle (3), friction wheel axle support (5), torsion spring (8) is formed, friction wheel axle is installed on the friction wheel axle support, be relation movingly between the two, its upper end is the wheel (6) that has the decorative pattern of strengthening friction, the spindle nose of lower end has inner square hole, axle bracket is by a bearing pin (7) and links with friction wheel support, torsion spring is installed on the friction wheel support by pin, spring stress is pushed the lower end of friction wheel axle support to inside, on the friction wheel axle support, also extend a pull lever (4), its drive part adopts the form of flexible axle (9), the connection that matches with the square hole of friction wheel axle lower end of the square toes of flexible axle axle core rear end; Its switching control mechanism is formed by moving handwheel (12), backguy (10) and damping spring (11), move handwheel be installed in before last, the front end of its backguy is fixed on the handwheel, the other end hangs over the termination of pull lever by a damping spring; Its fan head partly is made up of support (14), fan cover (17), impeller (18), impeller shaft (16), impeller shaft support (15), its support is fastened on preceding last, its impeller shaft support is rack-mount, impeller shaft is installed in the impeller shaft support between the two for movingly, impeller and impeller shaft are the relation of key connecting, there is a square hole lower end of impeller shaft, and its fan cover is fixed on the support, and the front end of driving snake cooperates connection with the square hole of impeller shaft below.

2. according to the described bicycle fan of claim 1, it is characterized in that below support, having a flexible axle fitting seat (13) concentric with the impeller shaft support, it is a middle big screw with holes, and uses scyewed joint between support, and the nut of flexible axle front end connects with fitting seat.