CN2206751Y - Power driving apparatus for bicycle - Google Patents

Abstract

The utility model discloses a power driving apparatus for a bicycle, which is a new rear wheel driving device for a bicycle. The utility model can be used for reconstructing ordinary bicycles into dual-purpose bicycle ridden by man and machine. The utility model has the advantages of small size, light weight, simple structure, and convenient installation and operation; some parts can also be used for common bicycles. The driving apparatus is provided with an independent shell and is integrated with a power machine and a hub; a transmission and a clutch means are arranged in the shell; the holes on a flange of the hub are used for installing a bicycle spoke and wheels; the screw thread at the right end of the hub is used for installing a bicycle freewheel; a nut of an axle roller component is used for installing the utility model on a bicycle frame conveniently.

Description

Power driving apparatus for bicycle

Bicycle power running vehicle (hereinafter to be referred as " running vehicle ") belongs to the light vehicle---the bicycle rear actuating device.It is installed on the ordinary bicycle, foot can be stepped on bicycle and be transformed into and be people, machine dual-purpose bicycle.This new bicycle can alleviate user's labour intensity, suitably improves moving velocity, improves safety and traveling comfort.This running vehicle has volume characteristics little, in light weight, simple in structure, easy to install and use.

Bicycle has simple structure, convenient, flexible, moving velocity is faster than walking, price is low advantage, thereby is the vehicle that generally use, and plays crucial effect in life, in producing.Simultaneously, it exists the shortcoming that steps effort, safety in utilization, traveling comfort difference again, thereby, can only use for short distance, limited its range of use greatly.Therefore, how solving laborsaving, traveling comfort, the safety of bicycle, is a very significant problem.

Installing engine installation on bicycle additional, is the effective way that addresses the above problem.But from the prior art, all also there is perfect inadequately place in many Power Drive Units.As 912242663 patents " bicycle power-assisted device ", engine and driving device are installed on the vehicle frame, move ahead with the garden shape track on the friction wheel drive wheels, the transmission load of vehicle frame is increased, the work of friction wheel transferring power is also reliable inadequately.And for example 912269863 patents " morpet wheel direct drive unit " need the special wheel net that diameter is big, cost is high of making, transmission device complexity (three grades of transmissions), and bicycle rear axle needs special the making, and number of parts is many, and manufacturing cost is higher.

The purpose of this utility model, it is the technical scheme that proposes a kind of bicycle human-machine dual-purpose back-wheel drive device of novelty, and use this scheme design for example a kind of simple in structure, in light weight, utilize the running vehicle of existing attachments of a bicycle as far as possible, to improve the deficiency of existing Power Drive Unit (2 examples as described above).

It is technical scheme figure of running vehicle that this specification sheets has 3 width of cloth accompanying drawing: Fig. 1; Fig. 2 is the composition scheme drawing of housing; Fig. 3 is the embodiment of running vehicle and the assembling relationship figure of each part.

Now essential structure and the principle of work with this running vehicle technical scheme is described below in conjunction with Fig. 1:

This running vehicle has an independently housing (10); 1 engine (combustion engine or electrical motor) (1) is installed on the left side of housing, installs engine gear (2) on the engine main shaft, and stretch in the housing (10); By bearing (5 and 7) transmission shaft (4) is installed in the housing; Big transmission gear (3) is installed on the transmission shaft (4) by bearing (6), is meshed with engine gear (2); Between big transmission gear (3) and transmission shaft (4), arrangement of clutch (8) is set; Installing small transmission gear (9) at the transmission shaft right-hand member; Installing beaming roller assembly (11) at housing (10) right-hand member, the beaming roller assembly is installed with a skin assembly (15) by bearing (13 and 16) outward, axle skin assembly left end is installing driven wheel (14) in housing (10), driven wheel is meshed with small transmission gear (9).

Porose on the outer bead of axle skin assembly (15), in order to the width of cloth bar and the trailing wheel of dress bicycle, right-hand member has screw thread in order to bicycle freewheel to be installed, as long and two-short dash line.Whole running vehicle and bicycle rear just can be installed on the vehicle frame of bicycle with the nut on the beaming roller assembly (11) (12 and 17) together, and housing (10), engine (1) body also just become one with vehicle frame.

The power transmission principle of this running vehicle is: after engine (1) starts, drive big transmission gear (3) rotation through engine gear (2), drive transmission shaft (4) and small transmission gear (9) rotation through arrangement of clutch (8), drive driven wheel (14) and axle skin assembly (15) again, thereby the drive wheel revolutions drives bicycle running.

Introduce main parts size and assembly relation thereof in conjunction with Fig. 1, Fig. 2, Fig. 3 again:

1, engine (1) is supporting combustion engine or electrical motor, selects for use according to implementing needs.

2, the housing among Fig. 1 (10) is connected institute with screw and is formed by main body (10-2), right cap assemblies (10-3), left cap assemblies (10-1), as Fig. 2.

Right cap assemblies (10-3) among Fig. 2 can be covered (10-3-1) and oil sealing (10-3-2) by the right side and form, as shown in Figure 3.

Left cap assemblies (10-1) among Fig. 2 can independently be made, also can be by being formed by left side lid and other parts of one with engine (1).

3, the bearing among Fig. 1 (5,6 and 7) can use antifriction-bearing box, also can use plain bearing.Bearing (13 and 16) can be used the bicycle use bearing of being made up of steel ball (13-2 and 16-2), axle bowl (13-3 and 16-3), axle shelves (13-1 and 16-1), as shown in Figure 3; Also can use antifriction-bearing box.

4, arrangement of clutch (8) comprises the arrangement of clutch that adopts the different types power-transfer clutch, selects for use according to different implementation conditions.This specification sheets is narrated except that the engaged clutch of giving an example in embodiment (Fig. 3) no longer one by one.

5, the structural shape of other parts, dimensional parameters etc. should be determined according to mating power machine and implementation condition.Embodiment has introduced the adapted gasoline engine, has adopted engaged clutch, has utilized ordinary bicycle rear axle parts to form the component assembly relation of running vehicle, as Fig. 3.

After this running vehicle was installed on bicycle, user's method of operation was:

1, start engine: when engine is combustion engine, separate arrangement of clutch earlier, step bicycle running, again in conjunction with arrangement of clutch and continue to step, engine can start; When engine is electrical motor, also press aforesaid operations, just energized again after in conjunction with arrangement of clutch can alleviate starting resistance so greatly, and storage battery is also had very big benefit.

2, powered travel and parking: after engine starts, the rotating speed of control engine, i.e. may command moving velocity; Closing engine can stop, and uses the brake gear of bicycle in case of necessity.

3, people, machine drive simultaneously and travel: when going up a slope or load-carrying, when certain reason made the engine g-load, manpower stepped simultaneously, overcomes the deficiency of power, makes the bicycle cruising.

4, manpower travels: separate arrangement of clutch, can be the same with ordinary bicycle, and travel by sufficient the stepping on of user.

This running vehicle is compared with existing bicycle Power Drive Unit, has following advantage and good effect, thereby has novelty, advance and practicality:

1, simple structure, easy to manufacture.This running vehicle is except that the mating power machine, driving device has only 2 grades of gear transmissions, multinomial functions such as one cover arrangement of clutch can be finished the power combination and separate, engine startup, number of parts reduces, and more employing and bicycle general-duty part and gauge member, the special part of making is few, thereby easy to manufacture, and cost is lower.

2, dependable performance.This running vehicle is assembled into an independently integral body with engine, driving device, bicycle hub, by the vehicle frame transferring power, does not influence frame strength; Inner each tumbler is the adapted antifriction-bearing box all, can adopt oil lubricating, and loss due to friction is little, relatively adopts the lubricated bicycle Power Drive Unit of open type transmission and butter, and mechanical transfer efficient, service life all make moderate progress.

3, easy to install and use.Bicycle is installed this running vehicle, need not change original parts, except that wheel, only need tighten two nuts and just can finish, and does not change primary car structure and appearance.Step on the function of travelling owing to made full use of the bicycle foot, finish the bicycle starting and start engine, make operation become very simple and reliable with it, the trouble of having simplified actuating mechanism and having brought with the power-transfer clutch starting, safety performance increases.

4, can be fit to plurality of bicycles installs and uses.The specifications and models of bicycle are varied, and existing bicycle Power Drive Unit parts are difficult to and the bicycle of different model exchanges, thereby commonality is poor.This running vehicle rises except that employing the bicycle of lock brake, and various bicycle can both be installed and used, not only can with new car match, also can be used for transforming used car, thereby extensive market prospects arranged.

5, user's traveling comfort improves.This running vehicle frees the user from heavy manual labor, can travel as middle-long distance.Whole running vehicle and fuel tank all are arranged in the trailing wheel place, thereby operation that can the overslaugh user, and noise, smoke emission, temperature etc. can not disobeyed evil and disturb the user, and good environment for use is arranged.

Embodiment

According to aforesaid running vehicle design plan, it is as follows now will to implement design example, as Fig. 3.

1, engine adopts air cooling type single cylinder two-stroke gasoline engine, 4000 rev/mins of rated speed of rotation.

2, housing (10) is combined by the screw connection by main body (10-2), left cap assemblies (10-1), right lid (10-3-1) and oil sealing (10-3-2).

3, arrangement of clutch adopts engaged clutch, and initiatively engaged element (8-3) and big transmission gear (3) are a unit construction, are installed on the transmission shaft (4) by bearing (6).Initiatively engaged element adopts the female splines structure, and passive engaged element (8-2) adopts the male splines structure, and can upward move axially at transmission shaft (4), controlled by steering unit (8-1).Disengaging of clutch when steering unit is compressed into; When steering unit is in free state, the power-transfer clutch combination.

4, bearing (5 and 7) adopts rolling ball bearing, and bearing (6) adopts needle bearing.

5, bearing (13 and 16) all adopts steel ball (13-2 and 16-2), axle bowl (13-3 and 16-3), the axle shelves (16-1) of existing bicycle to form except that left side axle shelves (13-1).

6, transmission shaft (4) and left cap assemblies (10-1) opposite position dress rubber oil sea.

Claims (9)

1, bicycle power running vehicle hereinafter to be referred as " running vehicle ", is a kind of new bicycle back-wheel drive device, and it is installed on the bicycle, common foot can be stepped on bicycle and be transformed into and be people, machine dual-purpose bicycle.Its feature is: this running vehicle has an independently housing (10); On the left side of housing an engine (1) is installed, installs engine gear (2) on the engine main shaft, and stretch in the housing (10); By bearing (5 and 7) transmission shaft (4) is installed in the housing; Big transmission gear (3) is installed on the transmission shaft (4) by bearing (6), is meshed with engine gear (2); Between big transmission gear (3) and transmission shaft (4), arrangement of clutch (8) is set; Installing small transmission gear (9) at the transmission shaft right-hand member; Installing beaming roller assembly (11) at housing (10) right-hand member, the beaming roller assembly is installed with a skin assembly (15) by bearing (13 and 16) outward, and axle skin assembly left end is installing driven wheel (14) in housing (10), and driven wheel is meshed with small transmission gear (9); Porose on the outer bead of axle skin assembly (15), in order to bike spoke and trailing wheel voluntarily to be installed, right-hand member has screw thread in order to bicycle freewheel to be installed; Running vehicle can be installed on the vehicle frame of bicycle with the nut on the beaming roller assembly (11) (12 and 17).

2, running vehicle according to claim 1 is characterized in that described engine (1) is a combustion engine.

3, running vehicle according to claim 1 is characterized in that described engine (1) is an electrical motor.

4, running vehicle according to claim 1 is characterized in that described housing (10) is connected institute with screw and formed by main body (10-2), right cap assemblies (10-3), left cap assemblies (10-1).

5, running vehicle according to claim 1 is characterized in that the right cap assemblies (10-3) of described housing (10) is made up of right side lid (10-3-1) and oil sealing (10-3-2).

6, running vehicle according to claim 1, the left cap assemblies (10-1) that it is characterized in that described housing (10) is by being formed by right side lid and other parts of one with engine (1).

7, running vehicle according to claim 1 is characterized in that described bearing (5,6 and 7) is antifriction-bearing box or plain bearing.

8, running vehicle according to claim 1 is characterized in that the bicycle use bearing of described bearing (13 and 16) for being made up of steel ball (13-2 and 16-2), axle bowl (13-3 and 16-3), axle shelves (13-1 and 16-1), or antifriction-bearing box.

9, running vehicle according to claim 1 is characterized in that described arrangement of clutch (8), is made up of engaged clutch and steering unit (8-1) thereof with active engaged element (8-3) and passive engaged element (8-2).

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