Automatic transmission

A technology of automatic transmission and gear shift, applied in mechanical drive clutches, couplings, clutches, etc., can solve the problems of excessive consumption, deterioration of fuel consumption, etc., and achieve the goal of restraining the rise, improving the sliding property, and restraining the rise of the product cost. Effect

Active Publication Date: 2010-06-09
AISIN AW CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, excessive consumption of fuel worsens fuel consumption

Method used

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  • Automatic transmission
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Embodiment Construction

[0040] Hereinafter, the best mode for realizing the automatic transmission of the present invention will be described in detail with reference to the drawings. The automatic transmission of the present embodiment is a longitudinally mounted automatic transmission mounted on a front-engine, rear-wheel drive (FR) automobile, and implements so-called neutral control. In addition, refer to figure 1 as well as figure 2 The automatic transmission of the embodiment will be described. figure 1 It is a figure which schematically shows the vehicle loading state of the automatic transmission which concerns on an embodiment. figure 2 It is a figure which schematically shows the structure of the automatic transmission which concerns on an embodiment.

[0041] Such as figure 1 As shown, the automatic transmission 20 of this embodiment is mounted behind the engine 11 of the automobile 10 . That is, the automatic transmission 20 is disposed in a floor tunnel formed in the automobile...

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Abstract

An automatic transmission which can be produced with a rise in costs thereof kept to a minimum and which produces a reduced impact when moved after a stop of the vehicle. The automatic transmission (20) is constructed such that hydraulic pressure controls a shift mechanism (23) to transmit the rotation of an input shaft (21) to shift positions, thereby transmitting the rotation to an output shaft(24). Splines (30) are formed in the output shaft (24) in that portion of the front end thereof which fits to a propeller shaft (12). A large diameter section (31) of the splines (30) has a two-step chamfer, and the corners (32, 32) on both sides of each spline tooth are chamfered.

Description

technical field [0001] The present invention relates to an automatic transmission mounted on a vehicle, and more particularly, to an automatic transmission capable of improving slippage on splines formed on an output shaft. Background technique [0002] As a transmission loaded in a vehicle, an automatic transmission has been widely promoted. In this type of automatic transmission, there is a multi-speed transmission mechanism configured as follows: the multi-speed transmission mechanism changes the power transmission path of the gear part through clutches and brakes to change the rotation of the input shaft into a plurality of gears, and then transmits To the output shaft, this multi-speed transmission mechanism is accommodated in a transmission case (refer to Patent Document 1). [0003] Here, in a vehicle equipped with an automatic transmission, when a brake is depressed to stop the vehicle, a driving force source (for example, an engine) rotates while driving a torque c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/02F16C3/03F16D1/02F16D1/06F16D11/00F16H3/44F16H59/54F16H61/02
Inventor 左右田融本乡谷彰人糟谷悟鸟居亮弘山口毅川上尊之原田吉晴
Owner AISIN AW CO LTD
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