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Oil draining bolt used for electric drive automobile transmission and transmission

A technology of automobile gearbox and oil drain bolt, which is applied in the direction of gearbox, components with teeth, parts of transmission device, etc., can solve the problems of unfavorable gearbox shifting, increase of lubricating oil viscosity, etc., and achieve good shifting performance. , Prevent viscosity increase, good effect of gear lubrication

Pending Publication Date: 2018-11-23
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the invention is that in the cold environment, the viscosity of the lubricating oil in the gearbox of an electric drive vehicle increases, which is not conducive to the shifting of the gearbox

Method used

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  • Oil draining bolt used for electric drive automobile transmission and transmission
  • Oil draining bolt used for electric drive automobile transmission and transmission
  • Oil draining bolt used for electric drive automobile transmission and transmission

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0023] An embodiment of the present invention provides an oil drain bolt, which is installed at the bottom of the gearbox of an electric drive vehicle. After the oil drain bolt is opened, the lubricating oil in the gearbox of the electric drive vehicle can be released, so as to renew the lubricating oil in the gearbox. refer to figure 1 , the oil drain bolt of this embodiment includes a bolt body 10 and a nut end 20. The bolt body 10 has an insertion end 101 inserted into the gearbox. fixed to the bottom of the gearbox. The insertion end 101 of the bolt body 10 is provided with an electric heating part 30 , and the electric heating part 30 is insulated from the insertion end 101 for heat conduction.

[0024] The insertion end 101 of the oil drain bolt is inserted into the gearbox of the electric drive vehicle. In a cold environment, the low gear of the electric drive vehicle is started by pure electric drive. When the temperature of the lubricating oil in the gearbox of the e...

no. 2 example

[0040] refer to image 3 The difference between this embodiment and the first embodiment is that the electric heating part 30 is disposed in the slot 11 of the insertion end 101 . That is, the electric heating part 30 is completely placed in the slot 11 and does not protrude from the slot 11 of the insertion end 101 . The rest of the structure is the same as that in the first embodiment, and will not be repeated here.

no. 3 example

[0042] This embodiment provides a gearbox, especially a gearbox used in electric vehicles. The gearbox includes: a box body, and a bolt hole is provided at the bottom of the box body, and the oil drain bolt in the above embodiment is connected with the bolt hole. The gearbox of this embodiment also includes the control unit of the above embodiment. The control unit may be integrated in a transmission control unit (TCU) of the electric drive vehicle, or the control unit may be connected to the TCU of the transmission control unit of the electric drive vehicle.

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Abstract

The invention relates to an oil draining bolt used for an electric drive automobile transmission and the transmission. The oil draining bolt comprises a bolt body, the insertion end of the bolt body is provided with an electric heating part, and the electric heating part and the exterior of the insertion end achieve insulating heat conduction. After the insertion end of the oil draining bolt is inserted into the transmission through an oil draining opening in the transmission, the electric heating part can heat lubricating oil inside the transmission, the viscosity of the lubricating oil underthe cold environment is prevented from being increased, gear lubrication is better achieved, and the gear shifting performance of the transmission is good.

Description

technical field [0001] The invention relates to an oil drain bolt and a gearbox for an electric drive automobile gearbox. Background technique [0002] Lubricating oil is stored in the gearbox, which is used to lubricate the gears in the gearbox to facilitate gear shifting operations. The lubricating oil in the gearbox needs to be renewed after being used for a long time. Therefore, an oil drain is provided at the bottom of the gearbox, and the oil drain is blocked by an oil drain bolt. After the bolt is unscrewed, the lubricating oil in the gearbox can be discharged, and after the lubricating oil is drained, fresh lubricating oil is added through the oil inlet on the gearbox. [0003] For the gearbox in electric vehicles or hybrid vehicles, the low gears of electric vehicles or hybrid vehicles generally use pure electric drive to start, and the motor cannot generate hot air circulation like the engine power system of traditional internal combustion engine vehicles. In a c...

Claims

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Application Information

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IPC IPC(8): F16H57/04F16H57/02
CPCF16H57/02F16H57/0413
Inventor 高炜钟虎李佳皓
Owner SCHAEFFLER TECH AG & CO KG
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