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Driving device and manufacturing method of driving device

A technology for driving devices and differential devices, which can be used in electromechanical devices, cooling/ventilation devices, electric components, etc., and can solve problems such as oil leakage

Active Publication Date: 2020-10-23
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, oil may leak from the vent hole to the outside of the case

Method used

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  • Driving device and manufacturing method of driving device
  • Driving device and manufacturing method of driving device
  • Driving device and manufacturing method of driving device

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Embodiment Construction

[0017] In the following description, the vertical direction will be defined based on the positional relationship when the drive device according to the embodiment shown in each figure is mounted on a vehicle located on a horizontal road surface. In addition, in the drawings, an XYZ coordinate system is appropriately shown as a three-dimensional orthogonal coordinate system. In the XYZ coordinate system, the Z-axis direction is the vertical direction. The +Z side is the upper side in the vertical direction, and the -Z side is the lower side in the vertical direction. In the following description, the upper side in the vertical direction is simply referred to as "upper side", and the lower side in the vertical direction is simply referred to as "lower side". The X-axis direction is a direction perpendicular to the Z-axis direction, and is the front-rear direction of the vehicle on which the drive device is mounted. In the following embodiments, the +X side is the front side of...

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Abstract

The invention provides a driving device and a manufacturing method of a driving device. The driving device comprises a motor, a speed reduction device, a differential device, a shell and a ventilationpart. The housing has a top wall portion. The ventilation part is provided with a ventilation hole part arranged on the top wall part and connecting the inside and outside of the shell. The ventilation hole part has: a vertical extension part extending from a vertical upper side surface of the top wall part to a vertical lower side; a first inclined part which extends from the inner side surfaceof the top wall part in a direction that is higher in the vertical direction as the first inclined part faces one side of the predetermined direction, and is connected with the lower end part of the vertical extension part in the vertical direction; and a second inclined part which extends from the inner side surface of the top wall part in a direction that is higher in the vertical direction as the second inclined part faces the other side of the prescribed direction, and which is connected to the lower end of the vertical extension part in the vertical direction. A part of the inner side surface of the first inclined part, which is positioned at the upper side in the vertical direction, is provided with a first concave part which is concave towards the upper side in the vertical direction. A part of the inner side surface of the second inclined part, which is positioned at the upper side in the vertical direction, is provided with a second concave part which is concave towards the upper side in the vertical direction.

Description

technical field [0001] The present invention relates to a driving device and a method for manufacturing the driving device. Background technique [0002] There is known a drive device for a vehicle in which oil is accommodated in a housing. For example, Patent Document 1 describes a driving device for a hybrid vehicle. [0003] Patent Document 1: International Publication No. 2012 / 046307 [0004] In the driving device described in Patent Document 1, the motor generates heat during running, and the pressure inside the casing changes. Therefore, in order to adjust the pressure inside the casing, a vent portion having a vent hole portion may be provided. In this case, for example, there is a possibility that the oil stored inside the casing may infiltrate into the vent hole portion, and may advance through the vent hole portion toward the outside of the casing due to surface tension. Therefore, oil may leak from the vent hole to the outside of the housing. Contents of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/20H02K7/116H02K9/19
CPCH02K5/20H02K7/116H02K9/19Y02T10/64
Inventor 藤本祥平馆形和典福永庆介
Owner NIDEC CORP
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