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Variable-speed driving axle and two-speed drive module thereof

A drive module and variable speed drive technology, which is applied in the field of vehicles, can solve the problems of limiting the output torque of the transaxle, not being applicable, and the large diameter of the drive axle housing, so as to reduce the radial dimension, improve the amplification function, and reduce the distance between The effect of ground distance

Inactive Publication Date: 2017-11-07
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, the size of the final gear affects the maximum output torque of the entire transaxle. In order to increase the maximum output torque, the diameter of the final gear is usually larger, which in turn makes the diameter of the final gear of the transaxle case larger, resulting in the distance from the ground of the transmission. Not tall enough for an SUV
Correspondingly, due to the limitation of the distance from the ground, the optional range of the diameter of the final gear is also very limited, thereby limiting the output torque of the entire transaxle

Method used

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  • Variable-speed driving axle and two-speed drive module thereof
  • Variable-speed driving axle and two-speed drive module thereof
  • Variable-speed driving axle and two-speed drive module thereof

Examples

Experimental program
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Effect test

no. 1 example

[0025] An embodiment of the present invention provides a two-speed drive module T of a transaxle, referring to figure 1 , figure 2 As shown, the two-speed drive module T includes an input shaft 1 , an output shaft (not marked in the figure) and a gear assembly for transmitting power between the input shaft 1 and the output shaft. The input torque from the power source is input from the input shaft 1, the torque is amplified by the gear assembly and turned into output torque, and the output torque is output by the output shaft.

[0026] like figure 2 As shown, the gear assembly includes three major components, a two-speed gear set 31 , a planetary gear set 32 ​​and a connecting gear set 33 . Among them, the two-speed gear set 31 has two groups of shifting gear pairs Z1 and Z2 with different speed ratios, and the shifting gear pairs Z1 and Z2 can be respectively connected or disconnected from the input shaft 1 to reduce the speed of the input shaft 1 to output at different ...

no. 2 example

[0038] The difference between this embodiment and the first embodiment lies in the arrangement of the two-speed gear set 31 and the connecting gear set 33 .

[0039] In this example, if image 3 , Figure 4 As shown, the idle gears of the two groups of shift gear pairs Z1 and Z2 are all set on the intermediate shaft 4 as the driven gear of the shift gear pair, and the fixed gears are set on the input shaft 1 as the shift gear pair The driving gear, the synchronizer S is also located on the intermediate shaft 4 and is located between the two idler gears in the axial direction.

[0040] The connecting gear set 33 is arranged on one side of the two shift gear pairs Z1 and Z2 along the axial direction of the intermediate shaft 4 . Wherein, the connecting gear set 33 includes a first gear G1 fixed on the intermediate shaft 4 , and a second gear G2 connected to the input end of the planetary gear set 32 ​​. The first gear G1 and the second gear G2 mesh with each other.

[0041] ...

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PUM

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Abstract

Provided are a variable-speed driving axle and a two-speed drive module thereof. The two-speed drive module comprises an input shaft, an output shaft and a gear assembly used for transmitting power between the input shaft and the output shaft. The gear assembly comprises a two-speed gear set which is provided with two sets of gear-shifting gear pairs with different speed ratios, a planetary gear set and a connection gear set, wherein the gear-shifting gear pairs can be connected with the input shaft in a transmission mode or disconnected from the input shaft so as to enable the rotation speeds of the input shaft to be output at different speed ratios; the output end of the planetary gear set is in transmission connection with the output shaft; and the two-speed gear set and the planetary gear set are in transmission connection through the connection gear set. By means of the scheme, the radial size of the two-speed drive module can be reduced, and the ground clearance of the variable-speed driving axle is reduced.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a variable speed drive axle and a two-speed drive module thereof. Background technique [0002] In a traditional car, the drive axle is a mechanism located at the end of the transmission system to change the speed and torque from the transmission and transmit them to the drive wheels. The drive axle generally includes a drive axle housing, a final drive, a differential, etc. For vehicles with front-engine front axle drive, the two powertrains of the transmission and the drive axle are integrated and arranged in the drive axle housing. This type of drive axle is called a transaxle. [0003] When the transaxle is used in a hybrid vehicle or a pure electric vehicle, the motor will be used as the power source of the transaxle. In order to increase the driving torque without increasing the size and cost of the motor, GKN (GKN) in 2014 A transaxle with a two-speed drive module has been introdu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/08F16H3/44F16H37/04
CPCB60K17/08F16H3/44F16H37/046F16H2200/20B60K1/00B60K2001/001F16H3/089F16H2200/0034B60K17/165F16H37/02F16H37/041F16H37/0813F16H2037/028F16H2200/0008F16H2200/2005
Inventor 钟虎陈鹏
Owner SCHAEFFLER TECH AG & CO KG