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Automatic speed changing device

A technology of automatic transmission and brake, which is applied in the direction of transmission, gear transmission, transmission control, etc. It can solve the problems of axial size growth and unused drain oil, and achieve high-efficiency lubrication.

Active Publication Date: 2009-02-11
JATCO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art described above, since the two cylinder chambers are arranged in parallel in the radial direction, it is necessary to extend the drain oil path from the oil pump to the outer peripheral side of the pump cover.
Therefore, the pump cover is enlarged, and the axial dimension may increase in order to secure a clearance with the torque converter.
In addition, in the above structure, the drain oil from the oil pump is only returned to the oil pan, and the drain oil is not effectively used

Method used

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Examples

Experimental program
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Embodiment 1

[0075] figure 1 It is a block diagram showing the structure of the FR-type automatic transmission with 7 forward speeds and 1 reverse speed to achieve the first embodiment. From the input shaft Input side to the axial output shaft Output side, there are first planetary gear set GS1 (first planetary gear G1, second planetary gear G2), second planetary gear set GS2 (third planetary gear G3 and fourth planetary gear G2) Sequential configuration of planetary gears G4). In addition, a plurality of clutches C1 , C2 , and C3 and brakes B1 , B2 , B3 , B4 , and B5 are arranged as frictional coupling elements. In addition, multiple one-way overrunning clutches F1, F2, F3 are configured.

[0076] The first planetary gear G1 is a single pinion type planetary gear including a first sun gear S1, a first internal gear R1, and a first carrier PC1 supporting a first pinion P1 meshing with both gears S1, R1.

[0077] The second planetary gear G2 is a single pinion type planetary gear having ...

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PUM

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Abstract

Provided is an automatic speed changing device which makes sufficient lubrication while making the constitution of the transmission compact even when two cylinder rooms are arranged in the radial direction. The automatic speed changing device comprises a first brake, a pump cover; a first cylindrical part; a first cylinder room; a first piston; a lubricating oil supply port; and a connecting groove. The lubricating oil supply port is formed in the position between the first cylinder room and the first cylindrical part in the radial direction. Then the connecting groove connects the lubricating oil supply port to a spline.

Description

technical field [0001] The present invention relates to an automatic transmission, in particular to a lubricating structure for a connecting element. Background technique [0002] The technologies described in Patent Documents 1 and 2 are disclosed as multidisk brakes in which two automatic transmissions are arranged in the radial direction, and a cylinder chamber for pressing the multidisc brakes is integrally formed with a pump cover. [0003] [Patent Document 1] JP-A-2-42239 [0004] [Patent Document 2] JP-A-2-42240 [0005] However, in the prior art described above, since the two cylinder chambers are arranged in parallel in the radial direction, it is necessary to extend the drain oil passage from the oil pump to the outer peripheral side of the pump cover. Therefore, the pump cover is increased in size, and the axial dimension may be increased in order to secure a clearance with the torque converter. Furthermore, in the above structure, the drain oil from the oil pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/44F16H57/04F16H57/02F16H57/023F16H57/08
CPCF16H3/66F16H2200/2051F16H2057/087F16H2200/2058F16H61/0025F16H2200/0056F16H2200/2012F16H57/0434F16H57/043F16H63/3026F16H61/0009F16H57/0482
Inventor 北原铁郎土屋恒平
Owner JATCO LTD