JPS6028647U

JPS6028647U - Gear transmission noise prevention device

Info

Publication number: JPS6028647U
Application number: JP12088283U
Authority: JP
Inventors: 憲一山本
Original assignee: トヨタ自動車株式会社
Priority date: 1983-08-02
Filing date: 1983-08-02
Publication date: 1985-02-26
Also published as: JPS6339466Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面はこの考案の実施例を示し、第１図は変速機の内部
を表した断面図、第２図は第１図の要部を拡大して表し
た断面図、第３図は形状記憶合金製のスプリングが伸び
た状態を第２図との対応によって表した断面図である。１・・・変速機ケース、２・・・カウン、タシャフト、
３・・・アウトプットシャフト、６・・・シンクロメツ
シュ装置、１２・・・フォークシャフト、１４・・・シ
フトフォーク、１５・・・大径のワッシャ、１８・・・
・形状記憶合金製スプリング、２２・・・スプリングカ
解除装置、２７・・・ロックボール、２９・・・移動部
材。゛　　　″　　　　　、竺１図、゛　　第２図The drawings show an embodiment of this invention; Fig. 1 is a sectional view showing the inside of the transmission, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, and Fig. 3 is a shape memory alloy. FIG. 3 is a cross-sectional view corresponding to FIG. 2, showing a state in which a spring manufactured by the manufacturer is in an extended state. 1...Transmission case, 2...Counter, shaft,
3... Output shaft, 6... Synchromesh device, 12... Fork shaft, 14... Shift fork, 15... Large diameter washer, 18...
- Shape memory alloy spring, 22... Spring force release device, 27... Lock ball, 29... Moving member.゛ ″, Figure 1, Figure 2

Claims

[Scope of utility model registration request]

A gear in which a synchromesh device is installed on the axis of a shaft that rotates in response to torque transmission from the engine in a neutral state, and provides frictional resistance to the rotation of the shaft through synchronization during the initial stage of shaft operation. In the transmission, a shift fork that applies a shift operation force to the synchromesh device is slidably attached to the fork shaft from its neutral position to a shift position where the synchromesh device exerts a synchronizing action,
Moreover, a spring made of a shape memory alloy is installed on the axis of this fork shaft, which expands to slide the shift fork from its neutral position to the shift position when the oil temperature in the transmission exceeds a certain value. On the axis of the output shaft, which is arranged parallel to the fork shaft, there is a movable member that slides on the axis of the output shaft under the expansion action of the shape memory alloy spring, and a moving member that slides on the axis of the output shaft when the shape memory alloy spring is stretched. 1. An abnormal noise prevention device for a gear transmission, characterized in that a spring release device is provided with a lock ball that locks the slide of a moving member by centrifugal force.