CN2276911Y

CN2276911Y - Intermittent auxiliary driving gear of electric bicycle

Info

Publication number: CN2276911Y
Application number: CN96219778U
Authority: CN
Inventors: 施景耀
Original assignee: YANGJIA INDUSTRIAL Co Ltd
Current assignee: YANGJIA INDUSTRIAL Co Ltd
Priority date: 1996-09-27
Filing date: 1996-09-27
Publication date: 1998-03-25
Anticipated expiration: 2006-09-27

Abstract

The utility model relates to an intermittent auxiliary driving device of electric bicycles, particularly the auxiliary driving device which can intermittently drive a rear wheel. In the auxiliary driving device, two rear upper forks positions are respectively fixedly provided with a fixing frame; a pivot whose both ends are respectively pivoted with a motor is arranged between two fixing frames. A power wheel is driven by two motors. The power wheel can contact with the rear wheel. At the time of riding, the design can cause the driving device to generate intermittent auxiliary driving force to the bicycle through the gravity of the motors and the reaction of the rotate of the rear wheel. Thus the unnecessary load of a rider can be reduced.

Description

The intermittent auxiliary drive of Electrical Bicycle

The utility model relates to the intermittent auxiliary drive of a kind of Electrical Bicycle.

Electrical Bicycle be a kind of can be when riding, provide auxiliary power with electric motor drive, and can alleviate the partly bicycle of burden of cyclist, it mainly is as Fig. 5, shown in 6, Electrical Bicycle mainly is to utilize a fixed mount 51 to set up an electrical motor 52 respectively in both sides Seat stay 50 tops, 53, and in two

electrical motors

52,53 power wheels 54 of establishing a surperficial tool embossing, and power wheel 54 is by two

electrical motors

52,53 common transmissions, power wheel 54 keeps contacting of certain limit with trailing wheel 55 again, when power wheel 54 is subjected to two electrical motors 52, during 53 drives, but proper transmission trailing wheel 55, and reach the purpose that auxiliary cyclist drives bicycle.

Yet so design, though can be when cycling, auxiliary cyclist drives bicycle, it is right because power wheel keeps contacting of certain limit with trailing wheel, therefore reach when not using direct motor drive in just beginning to ride bicycle as the cyclist, to cause the bigger load of cyclist, and fall the end efficient of riding.

And because the gaseous tension in the rear tyre is not to keep certain, and power wheel can't be adjusted the ambiguity that causes power wheel to contact with trailing wheel, therefore also can't keep stablizing driving efficiency, so how when starting and not using, can effectively alleviate cyclist's load, and the stability that keeps accessory drives is present manufacture institute problem demanding prompt solution.

Therefore, main purpose of the present utility model provides a kind of intermittent auxiliary drive of Electrical Bicycle of the cyclist's of alleviating load, when bicycle when starting, because power wheel only contacts naturally with trailing wheel, so can't increase cyclist's load, and when bicycle when riding, then can utilize power wheel to be subjected to the trailing wheel turning effort, and produce the phenomenon of upspringing and falling, make intermittently assistive drive trailing wheel of power wheel, and can keep stability of transmission.

The technical solution of the utility model is to provide a kind of Electrical Bicycle intermittent auxiliary drive, this actuating device mainly is to be respectively equipped with electrical motor on two Seat stays, and establishing one between two relative electrical motors can be to the power wheel of trailing wheel effect, wherein, be respectively equipped with a fixed mount on two Seat stays, and set firmly a pivot between two fixed mounts, two electrical motors can utilize a ring set to be hubbed at the pivot two ends respectively and electrical motor is locked between ring set again, are pivoted and make electrical motor and pivot be relative;

The power wheel center is equipped with a transmission shaft again, and utilizes transmission shaft to be located between two electrical motors, contacts and be nature with trailing wheel, and is provided with unilateral bearing between transmission shaft and power wheel, and constituting one by this can intermittent auxiliary drive.

The utility model compared with the prior art advantage and good effect is very obvious.By above technical scheme as can be known, because the electrical motor and the Seat stay of the utility model auxiliary drive are the state of being pivoted, therefore when bicycle in starting when reaching not driving motor, can make power wheel and trailing wheel be lax state of contact, and behind cyclist's driving motor, the centnifugal force that then can utilize trailing wheel to rotate, cooperate actuating device to be the design of the state of being pivoted, and make power wheel and trailing wheel be intermittently closed contact, to keep the stability of accessory drives, and in the time of can effectively alleviating initial start stage and electrical motor and not driving, cyclist's load and efficient by bike.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is a three-dimensional exploded view of the present utility model, in order to the form and the relativeness thereof of each assembly of explanation the utility model.

Fig. 2 is a stereo appearance figure of the present utility model, form and relevant position thereof after forming in order to explanation the utility model.

Fig. 3 is a partial schematic diagram of the present utility model, in order to the assembled state of explanation electrical motor and power wheel.

Fig. 4 is an action scheme drawing of the present utility model.

Fig. 5 is the schematic appearance of traditional Electrical Bicycle actuating device.

Fig. 6 is the action scheme drawing of traditional actuating device.

The utility model is the actuating device of the intermittent assistive drive trailing wheel of a kind of Electrical Bicycle, at first please referring to shown in Fig. 1,2, this actuating device mainly is the fixed mount 12,13 that is formed with a M shape in bicycle two Seat stays 10,11 apical margins respectively, and two fixed mounts 12,13 form a depression 120,130 respectively relatively in top central authorities, this two depression 120,130 is higher than trailing wheel 20 peripheries, and can set firmly a pivot 14 in two 120,130 of depressions and (can be that spiral shell is solid, solid welding ... etc. mode);

Pivot 14 two ends can utilize a C shape ring set 16 to fix an electrical motor 15 respectively again, its middle ring sleeve 16 inner peripherals are installed with one deck gum cover 163, in order to prevent ring set 16 scratch electrical motors 15, and ring set 16 peripheries protrude and are formed with pivot cover 160, this pivot cover 160 just can be hubbed on the pivot 14, pivot 14 two ends and can utilize and place restrictions on cover 140 and place restrictions on simultaneously, to prevent that both sides electrical motor 15 from coming off, and ring set 16 two ends form a lug 161 respectively, 162, and two lugs 161,162 can be utilized a bolt 17 screw locks, and make electrical motor 15 just can be locked in 16 of ring sets, and electrical motor 15 can be relative with pivot 14 and is pivoted;

Cooperate shown in Figure 3 again, two electrical motors 15 protrude out the main shaft 150 of a tool bayonet lock 151 relatively, and 150 on the main shaft of two electrical motors 15 is provided with a power wheel 18 that contacts naturally with trailing wheel 20, these power wheel 18 centers are equipped with a

transmission shaft

180, and 18 of transmission shaft 180 and power wheels are installed with unilateral bearing 19, make power wheel 18 only can drive trailing wheel 20 by cw, and when trailing wheel 20 clickwises make bicycle retreat, just can make power wheel 18 be idling conditions, transmission shaft 180 two ends are formed with the draw-in groove 181 of relative two electrical motors, 15 bayonet locks 151 respectively again, and make power wheel 18 just in time can be arranged in 15 of two electrical motors, constituting one by this can intermittent auxiliary drive, is the form after the utility model is formed as shown in Figure 2.

As for running of the present utility model, then be as shown in Figure 4, when bicycle in starting or electrical motor 15 when not starting, because the power wheel 18 of actuating device is to be nature to contact with trailing wheel 20, and electrical motor 15 direction that is pivoted is to be positioned at the direction that trailing wheel 20 rotates, therefore for the cyclist, just can make power wheel 18 and electrical motor 15 be lax and contact, so unlikely loading when increasing the cyclist and riding;

Again when cyclist's driving motor 15 transfer motion powers take turns 18, because power wheel 18 is to be relative rotation with trailing wheel 20, therefore power wheel 18 can be closed contact with trailing wheel 20, and reach the purpose of accessory drives trailing wheel 20, and because trailing wheel 20 continuous counterclockwise rotations, can utilize the centnifugal force of trailing wheel 20 to make power wheel 18 slightly upspring, and make trailing wheel 20 and power wheel 18 be lax contact, again when power wheel 18 falls naturally by two electrical motors, 15 weight, power wheel 18 just can be closed contact with trailing wheel 20, and drive trailing wheel 20 once more, can reach the purpose of intermittently-driving by this, and when trailing wheel 20 tire pressures change, because actuating device and Seat stay 10, the 11st, be the state of being pivoted, and make power wheel 18 slightly be bounce status, therefore regardless of trailing wheel 20 tire pressures, but power wheel 18 equal Intermittent Contact trailing wheels, and stable driving efficiency is arranged;

Moreover, since power wheel 18 utilize unilateral bearing 19 and with 180 one-tenth unidirectional transmissions of transmission shaft, therefore work as the cyclist and promote bicycle backward, and when making trailing wheel 20 clickwises, just can drive the rotation of 18 inverse times of power wheel, and make

power wheel

18 and 180 of transmission shafts be idling conditions, so can effectively alleviate the load that the cyclist promotes bicycle backward.

Claims

The intermittent auxiliary drives of 1 one kinds of Electrical Bicycles, this actuating device mainly is to be respectively equipped with electrical motor on two Seat stays, and establishes one between two relative electrical motors and can the power wheel of trailing wheel effect be is characterized in that:

Be respectively equipped with a fixed mount on two Seat stays, and set firmly a pivot between two fixed mounts, two electrical motors can utilize a ring set to be hubbed at the pivot two ends respectively and electrical motor is locked between ring set again, are pivoted and make electrical motor and pivot be relative;

The power wheel center is equipped with a transmission shaft again, and utilizes transmission shaft to be located between two electrical motors, contacts and be nature with trailing wheel, and is provided with unilateral bearing between transmission shaft and power wheel.
The intermittent auxiliary drives of 2 Electrical Bicycles according to claim 1 is characterized in that: wherein fixed mount is to form M shape, and two fixed mount stage casings, two depressions are higher than the trailing wheel periphery, is located between two depressions and make pivot stride.
The intermittent auxiliary drive of 3 Electrical Bicycles according to claim 1 is characterized in that: its middle ring sleeve periphery protrudes and is formed with a pivot cover, and this pivot cover just can be hubbed on the pivot.
The intermittent auxiliary drives of 4 Electrical Bicycles according to claim 1, it is characterized in that: its middle ring sleeve two end portions is not formed with a lug, and two lugs can with a bolt screw lock with the electrical motor screw lock on ring set.
5 according to claim 1 or the intermittent auxiliary drive of 3 or 4 described Electrical Bicycles, and it is characterized in that: its middle ring sleeve inner peripheral is installed with the gum cover of one deck in order to the protection electrical motor.
6 according to claim 1 or the intermittent auxiliary drive of 3 described Electrical Bicycles, it is characterized in that: wherein pivot two ends and the available cover of placing restrictions on are placed restrictions on, and come off to prevent the both sides electrical motor.
The intermittent auxiliary drive of 7 Electrical Bicycles according to claim 1, it is characterized in that: wherein two electrical motors protrude out the main shaft of a tool bayonet lock relatively, the transmission shaft two ends of power wheel are formed with the draw-in groove of relative two electrical motor bayonet locks respectively again, and make power wheel just can be arranged between two electrical motors.