JPS5932762U

JPS5932762U - Gear transmission noise prevention device

Info

Publication number: JPS5932762U
Application number: JP12873382U
Authority: JP
Inventors: 秀昭古賀; 白谷　茂樹
Original assignee: トヨタ自動車株式会社
Priority date: 1982-08-25
Filing date: 1982-08-25
Publication date: 1984-02-29

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図は変速機の一部
を表した断面図、第２図は変速機ケース内の油温か上昇
したときの作動状態を第１図との対応で表した断面図、
第３図は第２図を上面からみた状態の断面図、第４図は
シフト時の動きを第３図との対応に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、４
・・・カウンタギヤ、８・・・シンクロメツシュ装置、
１７・・・フォークシャフト、１８・・・シフトフォー
ク、２１・・・形状記憶合金製のスプリング、２２・・
・キャンセラ、２０・・・インタロック機構。The drawings show an embodiment of this invention, and Fig. 1 is a cross-sectional view of a part of the transmission, and Fig. 2 shows the operating state when the oil temperature in the transmission case increases, in correspondence with Fig. 1. A cross-sectional view,
FIG. 3 is a sectional view of FIG. 2 viewed from above, and FIG. 4 is a sectional view showing the movement during shifting in correspondence with FIG. 3. 1...Transmission case, 2...Counter shaft, 4
... Counter gear, 8... Synchromesh device,
17...Fork shaft, 18...Shift fork, 21...Shape memory alloy spring, 22...
・Canceller, 20...Interlock mechanism.

Claims

[Scope of utility model registration request]

A gear shift device in which a synchromesh device is installed on the axis of a shaft that rotates in response to torque transmission from a predetermined prime mover in a neutral state, and provides drag resistance to the rotation of this shaft by synchronizing action in the initial stage of shift operation. In the machine, a shift fork that provides a shift operation force to this synchronized mesh device is installed so that it can slide relative to the fork shaft, and on the axis of this fork shaft, there is a shift fork that provides a shift operation force to the synchromesh device. A stopper that moves to shift the shift fork is fixed, and a stopper is placed between the stopper and the shift fork that extends when the temperature inside the transmission exceeds a certain value and moves the shift fork along the fork shaft in the direction of the shift force. , providing a spring made of a shape memory alloy to cause a synchronizing action in the synchronized mesh device;
Furthermore, a canceller that is relatively slidable along the axis of the fork shaft is disposed on the axis of the fork shaft, and this canceller moves as the other fork shafts shift.
An abnormal noise prevention device for a gear transmission, characterized in that the shift fork is set in an interlocking relationship such that the shift fork can be slid in a direction opposite to the direction of the shift force through the movement of an interlock mechanism.