CN205136567U - Electric automobile keeps off automatic speed changing shift system with two - Google Patents

Abstract

The utility model relates to a <b>two-speed automatic shifting system for an electric vehicle, which comprises a drive axle housing,</b>in the drive axle housing, an input shaft, an intermediate shaft and a differential are arranged in parallel in sequence from bottom to top The drive axle housing is equipped with an input shaft through a bearing, and a high-speed gear and a low-speed gear are arranged on the input shaft. The intermediate shaft high speed gear and the intermediate shaft low speed gear are meshed, and a synchronizer is installed between the intermediate shaft high speed gear and the intermediate shaft low speed gear on the intermediate shaft, and an output gear is provided at one end of the intermediate shaft. The main deceleration and passive gears of the differential assembly are meshed, and the differential assembly is connected to the half shaft through the half shaft holes on both sides to transmit power to the wheels. It has the characteristics of reasonable structure, light shifting, high efficiency, low noise and long life.

Description

Two-speed automatic transmission shift system for electric vehicles

technical field

The utility model belongs to the technical field of gear shifting systems, and relates to a two-speed automatic gear shifting system for an electric vehicle .

Background technique

Due to its advantages of less environmental pollution, low noise, high efficiency, simple structure, convenient use and maintenance, and durability, electric vehicles have become an inevitable trend in the development of domestic automobiles. As far as the current electric vehicle transmission is concerned, the electric vehicle transmission is to transmit the driving torque of the electric motor to the drive shaft of the vehicle. When the electric wheel is used to drive, most components of the traditional vehicle transmission can often be ignored, such as clutches, Transmissions and differentials can be used in electric vehicles. Now the electric vehicle drive axle with motor speed control device is used. The motor is directly installed on the drive axle, and the voltage or current of the motor is controlled by the controller to complete the control of the drive torque and rotation direction of the motor. The drive axle with this structure can no longer change the running speed of the vehicle and the carrying capacity of the vehicle within the controllable range of the controller.

Utility model content

In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a two-speed automatic transmission shifting system for electric vehicles , which can change the driving speed of the vehicle and the carrying capacity of the vehicle within the control range of the controller. Portable gear, light weight, low noise, high efficiency, reliable operation and so on.

The technical solution adopted by the utility model to solve the technical problem is: a two-speed automatic transmission shift system for electric vehicles, including a drive axle housing, in which an input shaft, a middle Shaft and differential assembly, the drive axle housing is equipped with an input shaft through bearings, and a high speed gear and a low speed gear are arranged on the input shaft. It meshes with the corresponding intermediate shaft high speed gear and the intermediate shaft low speed gear. A synchronizer is installed between the intermediate shaft high speed gear and the intermediate shaft low speed gear on the intermediate shaft. One end of the intermediate shaft is provided with an output gear. The output gear meshes with the main reduction and driven gears of the differential assembly, and the differential assembly is connected to the half shaft through the half shaft holes on both sides to transmit power to the wheels.

A shift motor and a drive motor are installed on the drive axle housing , wherein the shift motor controls the high-speed and low-speed conversion of the drive axle through forward rotation and reverse rotation, and the drive motor is connected to the input shaft power.

The shift motor transmits the power to the second-stage reduction driving gear shaft through the meshing of the first-stage reduction driving gear shaft and the first-stage reduction passive gear, and then transmits the power to For the shift shaft, a shift lever is installed on the shift shaft, and the synchronizer is controlled by the shift lever to complete the shift operation. An angle sensor is installed at one end of the two-stage reduction drive gear shaft, and the angle sensor sends the angle signal to the controller. The controller receives the signal and then controls the drive axle to automatically shift gears through the shift motor.

The synchronizer is splined to the intermediate shaft.

The synchronizer is provided with a sliding gear sleeve, and a shift fork is arranged on the sliding gear sleeve.

The differential assembly includes the differential and gears.

The beneficial effect of the utility model is that: in the driving axle, a slider type synchronizer is used for shifting, and the shifting control is controlled by a combination of a shifting motor and an angle sensor. The speed of the vehicle and the carrying capacity of the vehicle can no longer be changed within the control range, and the practicability of the electric vehicle is effectively improved, the scope of application is wider, and the efficiency is higher. The utility model has the advantages of reasonable structure, light shifting, Features of high efficiency, low noise and long life.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a longitudinal sectional view of the utility model.

In the figure: 1-drive axle housing, 2-shift motor, 3-input shaft, 4-intermediate shaft, 5-intermediate shaft high speed gear, 6-synchronizer, 7-shift fork, 8-intermediate shaft low speed gear Gear, 9-main deceleration and passive gear, 10-differential assembly, 11-half shaft hole, 12-drive motor, 13-primary deceleration driving gear shaft, 14-secondary deceleration driving gear shaft, 15-primary deceleration passive Gear, 16- shift shaft , 17- secondary reduction passive gear , 18- angle sensor , 19- shift lever .

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1 and Fig. 2, a two-speed automatic transmission shifting system for an electric vehicle includes a drive axle housing 1, in which an input shaft 3, an intermediate shaft 4 and The differential assembly 10, the drive axle housing 1 is equipped with an input shaft 3 through a bearing, and a high speed gear and a low speed gear are arranged on the input shaft 3, and the high speed gear and the low speed gear of the input shaft 3 are connected with the looper respectively. The intermediate shaft 4 meshes with its corresponding intermediate shaft high speed gear 5 and intermediate shaft low speed gear 8, and a synchronizer 6 is installed between the intermediate shaft high speed gear 5 and the intermediate shaft low speed gear 8 on the intermediate shaft 4, One end of the intermediate shaft 4 is provided with an output gear, which meshes with the final reduction and driven gear 9 of the differential assembly 10, and the differential assembly 10 is connected with the half shaft through the half shaft holes 11 on both sides to transmit power to the wheels.

A shift motor 2 and a drive motor 12 are installed on the drive axle housing 1 , wherein the shift motor 2 controls the high-speed and low-speed conversion of the drive axle through forward rotation and reverse rotation, and the drive motor 12 is connected with the input shaft 3 power.

The shift motor 2 is meshed with the primary reduction driven gear shaft 13 through the primary reduction driving gear shaft 13, and the power is transmitted to the secondary reduction driving gear shaft 14, and then through the secondary reduction driving gear shaft 14 and the secondary reduction passive gear . The engagement of 17 transmits the power to the shift shaft 16 , which is equipped with a shift lever 19 , and the synchronizer 6 is controlled by the shift lever 19 to complete the shift operation. The sensor 18 and the angle sensor 18 send the angle signal to the controller, and the controller receives the signal and then controls the drive axle to automatically shift gears through the shift motor 2 .

The synchronizer 6 is splined to the intermediate shaft 4 .

The synchronizer 6 is provided with a sliding gear sleeve, on which a shift fork 7 is housed.

The differential assembly 10 includes a differential and gears.

The utility model adopts the slider type synchronizer 6 to shift gears in the drive axle, and adopts the combination of the gear shift motor 2 and the angle sensor 18 to control the shifting control, which not only solves the problem that the electric vehicle is in the controllable range of the controller. The speed of the vehicle and the carrying capacity of the vehicle can no longer be changed within the vehicle, and the practicability of the electric vehicle is effectively improved, the scope of application is wider, and the efficiency is higher. The utility model has the advantages of reasonable structure, light shifting, and high efficiency. , low noise and long life characteristics.

Claims (5)

1. one kind two-gear automatic speed changing shifting system used for electric vehicle, comprises a Driving axle housing, it is characterized in that:in Driving axle housing, parallel shows input shaft successively from the bottom to top, jack shaft and differential assembly, Driving axle housing is provided with input shaft by bearing, this input shaft is provided with top gear gear and bottom gear gear, this input shaft top gear gear and bottom gear gear respectively with kink on jack shaft its corresponding jack shaft top gear gear and jack shaft bottom gear gear be meshed, jack shaft top gear gear on jack shaft and be provided with synchronizer between jack shaft bottom gear gear, one end of jack shaft is provided with output gear, this output gear is meshed with the main deceleration driven gear of differential assembly, this differential assembly to be connected with semiaxis by half axis hole on both sides and to be transported on wheel by power, on Driving axle housingbe provided with shift motor and drive motor, wherein shift motor is by rotating forward, reversing the conversion controlling ransaxle high speed and low speed, and drive motor is then connected with input shaft power.

2. two-gear automatic speed changing shifting system used for electric vehicle as claimed in claim 1, is characterized in that:described shift motor is engaged with primary speed-down driven gear by primary speed-down driving gear shaft, power is passed to double reduction driving gear shaft, with engaging of double reduction driven gear, power is passed to shifting shaft by double reduction driving gear shaft again, shifting shaft is equipped with gear level, gear shift operation is completed by gear level control synchro, in one end of double reduction driving gear shaft, angle transducer is housed, angle transducer sends to controller angle signal, and controller acknowledge(ment) signal controls ransaxle self shifter by shift motor again.

3. two-gear automatic speed changing shifting system used for electric vehicle as claimed in claim 1, is characterized in that:described synchronizer by spline joint on jack shaft.

4. two-gear automatic speed changing shifting system used for electric vehicle as claimed in claim 1, is characterized in that:described synchronizer is provided with sliding gear collar, and this sliding gear collar is equipped with shift fork.

5. two-gear automatic speed changing shifting system used for electric vehicle as claimed in claim 1, is characterized in that:differential assembly comprises differential mechanism and gear.