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Toothed wheels and transmission

A technology of gears and gear pairs, which is applied in the directions of gear transmission, gear lubrication/cooling, belt/chain/gear, etc. It can solve the problems of oil not being used, small operating area, narrow friction coefficient, etc., to improve transmission efficiency, Effect of reducing friction loss

Inactive Publication Date: 2014-06-11
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, in this case, the oil accumulated in the pits may not be utilized
Therefore, the gear of Japanese Patent Application Publication No. 2005-201295 (JP-2005-201295A) may have a narrow operating region with a small coefficient of friction

Method used

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  • Toothed wheels and transmission
  • Toothed wheels and transmission
  • Toothed wheels and transmission

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] figure 1 A transmission in which a gear according to an embodiment of the present invention is incorporated is schematically shown. The transmission 1 is a well-known device installed on a vehicle to change the rotational speed of a traveling power source such as an internal combustion engine and transmit the rotation to transmission wheels. The transmission 1 has six forward speeds.

[0027]The transmission 1 is equipped with an input shaft 2 and an output shaft 3 . The input shaft 2 and the output shaft 3 are arranged parallel to each other. The first to sixth gear pairs G1 to G6 are arranged between the input shaft 2 and the output shaft 3 . The first gear pair G1 is composed of a first drive gear 11 and a first driven gear 12 meshing with each other. The second gear pair G2 is composed of a second drive gear 13 and a second driven gear 14 meshing with each other. The third gear pair G3 is composed of a third drive gear 15 and a third driven gear 16 meshing with...

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Abstract

A pair of toothed wheels that mesh with each other includes a plateau portion. The surface of the plateau portion is a plateau-structure surface formed on each tooth face (15b, 16b) of each of the pair of the toothed wheels (15, 16), with peak portions (30a) of convexities (30), out of a plurality of concavities (31) and the convexities (30) provided on the each tooth face, being flat. A reduced valley depth Rvk of the plateau portion of one of the pair of the toothed wheels as defined in JISB0671-2 is greater than the reduced valley depth Rvk of the plateau portion of the other of the pair of the toothed wheels. The area occupied by the concavities (31) in the plateau portion of the one of the toothed wheels is larger than the area occupied by the concavities (31) in the plateau portion of the other toothed wheel.

Description

technical field [0001] The present invention relates to a pair of gears meshing with each other and a transmission equipped with the gears. Background technique [0002] There are known gears whose tooth flanks are treated. For example, there are known gears having micro-dimples formed by subjecting the tooth surfaces of the gear to shot blasting so that high-hardness particles collide with the tooth surfaces at high speeds and thus slightly plastically deform the tooth surfaces (See Japanese Patent Application Publication No. 2005-201295 (JP-2005-201295A)). In addition, related technical documents associated with the present invention include Japanese Patent Application Publication No. 09-302454 (JP-09-302454A) and Japanese Patent Application Publication No. 2004-345022 (JP-2004-345022A) [0003] In the gear of Japanese Patent Application Publication No. 2005-201295 (JP-2005-201295A), a convex portion is formed on each tooth surface of the gear. Therefore, the lubricatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/06F16H57/04
CPCF16H57/0431F16H55/06F16H55/08Y10T74/19642Y10T74/19219F16H1/04F16H3/08
Inventor 床樱大辅村上新高桥裕哉市毛敬介入谷昌德铃木秀之
Owner TOYOTA JIDOSHA KK
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