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Brake device of transmission

A technology of brakes and transmissions, applied in the direction of brakes, transmissions, cooling brakes, etc., can solve the problems of deterioration, implicated fuel consumption, etc., and achieve the effect of simple structure and simple structure

Active Publication Date: 2018-12-04
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In this regard, it is considered to increase the amount of lubricating oil lubricating the starting brake to improve cooling performance. However, in order to increase th

Method used

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  • Brake device of transmission
  • Brake device of transmission
  • Brake device of transmission

Examples

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Embodiment Construction

[0080] Embodiments of the present invention will be described below.

[0081] figure 1 It is a schematic diagram showing the structure of an automatic transmission to which the brake device according to this embodiment is applied. The automatic transmission 10 has an input shaft 12 arranged on the drive source side (left side in the figure) and a longitudinally mounted automatic transmission disposed on the output shaft 13 on the counter drive source side (right side in the figure). In addition, the input shaft 12 and the output shaft 13 are arranged on the same axis. On the shaft centers of the input shaft 12 and the output shaft 13, the first, second, third, and fourth planetary gear sets (hereinafter referred to as "first, second, and third gear sets") are arranged from the drive source side. , Fourth gear set") PG1, PG2, PG3, PG4.

[0082] Again, this automatic transmission 10 is as figure 1 As shown, the first clutch CL1 is arranged on the driving source side of the...

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Abstract

The fuel consumption improvement and the durability of a friction plate are ensuerd by more efficiently implementing the supply of the lubricating oil to a brake device of a transmission. In a brake device (BR2) of a transmission, rotation side friction plates (101a...101a) are engaged with a cylindrical part (111) of a rotation side holding member (110), and fixed side friction plates (101b...101b) are engaged with a spline part (121e) that is provided on an outer peripheral surface of an inner cylindrical part (121a) of a fixed side holding member (101b...101b) opposed to a cylindrical part(111) of the rotation side holding member (110). The fixed side holding member (121) includes an inflow oil passage (Z) that supplies lubricating oil from the outside to the inside of the radial direction thereof. An annular space (P) communicating with an inflow oil passage (Z) is provided on the inside of the cylindrical part (121a) of the fixed side holding member (121). Oil discharge holes (121f...121f) supplying lubricating oil, which was flowed into the annular space (P), to the rotation side and fixed side friction plates are provided on the cylindrical part (121a) of the fixed side holding member (121).

Description

technical field [0001] The present invention relates to a brake device mounted on a transmission of a vehicle such as an automobile, and belongs to the technical field of vehicle transmissions. Background technique [0002] A transmission mounted on a vehicle such as an automatic transmission is generally configured to include a plurality of planetary gear sets and a plurality of hydraulic friction engagement elements such as clutches and brakes, and to selectively engage these friction engagement elements by hydraulic control to switch Through the power transmission path of each planetary gear set, it is possible to realize a plurality of forward speed stages and a conventional one-stage reverse speed stage. For the purpose of reduction, etc., there is a tendency to alleviate the shift shock by making the transmission multi-stage. [0003] In this way, there is a tendency to abolish the torque converter to meet the multi-stage and weight reduction requirements of the autom...

Claims

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Application Information

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IPC IPC(8): F16D55/40F16D65/00F16D65/14F16D121/04
CPCF16D55/40F16D65/00F16D65/14F16D2121/04B60T1/062B60T5/00F16D65/128F16H2063/3033F16H57/10F16H3/66F16H57/0424F16H57/0484F16H2200/2012F16H57/0473F16D65/122F16D67/04F16D65/853F16H2200/2043F16H63/3026F16H2200/006F16D65/186F16H3/666F16H57/0423
Inventor 西冈崇岩崎龙彦岩下典生石坂友隆
Owner MAZDA MOTOR CORP