CN201999172U

CN201999172U - Electric scooter gearbox

Info

Publication number: CN201999172U
Application number: CN2011200503727U
Authority: CN
Inventors: 周拥军
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-28
Filing date: 2011-02-28
Publication date: 2011-10-05
Anticipated expiration: 2021-02-28

Abstract

The utility model discloses an electric scooter gearbox, which comprises a foundation box body, a first cover, a second cover and a motor. The second cover is combined with the first cover in a covered manner, the motor is connected with the second cover, a holding area is formed between the first cover and the second cover, a motor input shaft and an output shaft are disposed in the holding area, a duplicate gear is sleeved on the motor input shaft and is peripherally fixed and axially slidably connected with the motor input shaft, a first gear and a second gear which match with the duplicate gear are fastened on the output shaft, and a gear control mechanism which drives the duplicate gear to move on the motor input shaft is further disposed in the holding area. A transmission mechanism is optimized, the duplicate gear is meshed with different gears on the output shaft by means of shifting the duplicate gear by a shifting fork, large gear ratio is adopted when in conditions such as starting or climbing and the like, small gear ratio is adopted when in normal driving, and accordingly the electric scooter gearbox can save electricity consumption, realize longer cruising mileage and save cost of the integral vehicle.

Description

A kind of electric cycle change speed gear box

Technical field

The utility model relates to the direct current drive driving skills art field of riding instead of walk, particularly a kind of electric cycle gearbox body.

Background technology

The existing direct current drive box body of riding instead of walk mostly is single-stage, secondary or multistage fixed speed ratio and exports transfer torque, so just make the problem that under the preset parameter condition, can't overcome some outwardnesies, a series of problems such as big such as starting current, hill climbing ability is poor, and the continuation of the journey range is short.

Be illustrated in figure 1 as existing a kind of gearbox body, comprise motor shaft 1 from top to bottom, intermediate gear 2 and diff, tighten at motor shaft 1 and to be with input gear 3, intermediate gear 2 is a duplex gear, one of them gear of dual gear and input gear 3 engagements, another gear in the dual gear and 4 engagements of diff big gear wheel; Can only realize that power consumption is big by regulating electric current as increasing or reducing moment of torsion, the continuation of the journey mileage is short, the integral vehicle cost height.

Summary of the invention

The utility model has overcome above-mentioned the deficiencies in the prior art, and a kind of drive mechanism of having optimized is provided, and saves power consumption, the long electric cycle change speed gear box of continuation of the journey mileage.

The technical solution of the utility model is achieved in that

A kind of electric cycle change speed gear box, comprise basic casing, lid one, the lid two that covers with lid one, the motor that links to each other with lid two, form between lid one and the lid two and hold the district, in holding the district, be provided with motor input shaft, output shaft, on the motor input shaft, be with dual gear, described dual gear and motor input shaft are circumferentially fixed, are in axial sliding connection, tighten the intrinsic gear that matches with dual gear one, gear two at output shaft, in holding the district, also be provided with and order about the gear control mechanism that dual gear moves on the motor input shaft.

As preferably, described gear control mechanism is to be made of spring and pull-fork assembly, described spring housing is located on the motor input shaft, the two ends of spring offset with the right side gear of lid two and dual gear respectively, described pull-fork assembly comprises the shift fork fixed cap that is arranged on lid one, lid two upper ends, be provided with the shift fork of sway under external force in the shift fork fixed cap, the shifting fork bar of shift fork extend into to hold in the district and offsets with the left side gear of dual gear.

Adopted the beneficial effects of the utility model of technique scheme to be:

The utility model is optimized transmission device, has increased an independent casing and be connected with the casing of original fixed speed ratio and make it switch speed ratio to realize gear shift on the casing of original fixed speed ratio; Promptly stir dual gear, gears different on dual gear and the output shaft is meshed, when running into situation such as starting or climbing, adopt big ratio of number of teeth by shift fork, adopt little ratio of number of teeth during cruising, thereby can save power consumption, the continuation of the journey mileage is longer, saves the cost of car load.

Description of drawings

Fig. 1 is the structural representation of change speed gear box in the prior art;

Fig. 2 is the structural representation of the utility model change speed gear box.

The specific embodiment

The specific embodiment of the present utility model is as follows:

Embodiment: as shown in Figure 2, a kind of electric cycle change speed gear box, comprise basic casing 3, lid 1, the lid 22 that covers with lid 1, the motor 4 that links to each other with lid 22, form between lid 1 and the lid 22 and hold district 5, in holding district 5, be provided with motor input shaft 6, output shaft 7, one end of output shaft 7 is provided with output gear 15, output gear 15 meshes with the big gear wheel 16 of differential assembly, is with dual gear 8 on motor input shaft 6, has rolled spline on motor input shaft 6, described dual gear 8 is connected with motor input shaft 6 keys, dual gear 8 can move axially on motor input shaft 6, tightens the intrinsic gear 1 that matches with dual gear 8 at output shaft 7, gear 2 10 also is provided with in holding district 5 and orders about the gear control mechanism that dual gear 8 moves on motor input shaft 6.

Described gear control mechanism is to be made of spring 11 and pull-fork assembly, described spring 11 is set on the motor input shaft 6, the two ends of spring 11 offset with the right side gear of lid 22 and dual gear 8 respectively, described pull-fork assembly comprises the shift fork fixed cap 12 that is arranged on lid 1, lid 22 upper ends, be provided with the shift fork 13 of sway under external force in shift fork fixed cap 12, the shifting fork bar 14 of shift fork 13 extend into to hold in the district 5 and offsets with the left side gear of dual gear 8.

Working process of the present utility model is as follows:

1, shift fork 13 is in off working state when working at ordinary times, gear one 9 engagements on the left side gear of dual gear 8 and the output shaft 7, the right side gear of dual gear 8 and gear 2 10 do not mesh, motor input shaft 6 drives dual gears 8, gear 1 rotates, and transmission output shaft 7 makes its work, and spring 11 was in releasing orientation and did not stress this moment, the left side gear of dual gear 8 is identical with gear one 9 ratios of number of teeth, and the total output torque of promptly whole transmission device is constant.

2, when needs switch to the output high pulling torque, shift fork 13 is subjected to external force and starts working, and shift fork 13 is moved right by the external force effect, and shifting fork bar 14 is stirred dual gear 8, make dual gear 8 compression spring 11 to the right, the left side gear of dual gear 8 and gear 1 are thrown off, the right side gear of dual gear 8 and gear 2 10 engagements, and the right side gear of dual gear 8 and gear 2 10 have the number of teeth poor, make the output ratio of number of teeth of entire mechanism double to increase, total output torque also doubles to increase.

Whole transmission device reaches optimization like this, meet starting climbing when waiting obstacle with big ratio of number of teeth, during cruising with little ratio of number of teeth, thereby the saving power consumption, the mileage of continuing a journey is longer, the cost of saving car load.

Claims

1. electric cycle change speed gear box, it is characterized in that: comprise basic casing, lid one, the lid two that covers with lid one, the motor that links to each other with lid two, form between lid one and the lid two and hold the district, in holding the district, be provided with the motor input shaft, output shaft, on the motor input shaft, be with dual gear, described dual gear and motor input shaft are circumferentially fixing, be in axial sliding connection, tighten the intrinsic gear that matches with dual gear one at output shaft, gear two also is provided with in holding the district and orders about the gear control mechanism that dual gear moves on the motor input shaft.

2. a kind of electric cycle change speed gear box according to claim 1, it is characterized in that: described gear control mechanism is to be made of spring and pull-fork assembly, described spring housing is located on the motor input shaft, the two ends of spring offset with the right side gear of lid two and dual gear respectively, described pull-fork assembly comprises the shift fork fixed cap that is arranged on lid one, lid two upper ends, be provided with the shift fork of sway under external force in the shift fork fixed cap, the shifting fork bar of shift fork extend into to hold in the district and offsets with the left side gear of dual gear.