JPS5861929U

JPS5861929U - Synchronous mesh mechanism in transmission

Info

Publication number: JPS5861929U
Application number: JP15671981U
Authority: JP
Inventors: 安井　保良; 正樹乾
Original assignee: トヨタ自動車株式会社
Priority date: 1981-10-20
Filing date: 1981-10-20
Publication date: 1983-04-26

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]

図面はこの考案の一実施例を示すもので、第１図はトラ
ンスミッションケースの壁に支持されるシャフトに対し
シンクロメツシュ機構が組付けられた状態を示す断面図
、第２図はクラッチハブのキー溝とシフティングキーと
の嵌倉状態を拡大して示す断面図、第３図はクラッチハ
ブの外周にハブスリーブをスプライン嵌合する状態を拡
大して示す断面図、鯖４図は５速シフト状態にあるシン
クロメツシュ機構の要部を示す断面図、第５図は後退シ
フト状態にあるシンクロメツシュ機構の要部を示す断面
図、第６図は他の実施例を示すもので、クラッチハブの
外周に７１ブスリーブをスプライン嵌合する状態を拡大
して示す断面図である。１…トムンスミツシヨンケースの壁、３・・・シャフト
、５・・・クラッチハブ、７・・・ハブスリーブ、７ａ
・・・内歯スプライン、７ｂ、　　７ｃ・・・傾斜面、
８・・・キー溝、８ａ・・・段差面、９・・・キースプ
リング、１０・・・シフティングキー、１０ａ・・・鍔
部、１３・・・フォークシャフト、１４・・・シフトフ
ォーク。The drawings show one embodiment of this invention. Figure 1 is a sectional view showing the synchromesh mechanism assembled to the shaft supported on the wall of the transmission case, and Figure 2 is a cross-sectional view of the clutch hub. Figure 3 is an enlarged cross-sectional view showing how the key groove and shifting key are fitted, Figure 3 is an enlarged cross-sectional view showing how the hub sleeve is spline fitted to the outer periphery of the clutch hub, Figure 4 is the 5th gear FIG. 5 is a cross-sectional view showing the main parts of the synchromesh mechanism in the shift state, FIG. 5 is a cross-sectional view showing the main parts of the synchromesh mechanism in the backward shift state, and FIG. 6 shows another embodiment. FIG. 3 is an enlarged cross-sectional view showing a state in which a 71 bushing sleeve is spline-fitted to the outer periphery of a clutch hub. DESCRIPTION OF SYMBOLS 1...Wall of the Thompson transmission case, 3...Shaft, 5...Clutch hub, 7...Hub sleeve, 7a
...internal spline, 7b, 7c...slanted surface,
8... Key groove, 8a... Step surface, 9... Key spring, 10... Shifting key, 10a... Flange, 13... Fork shaft, 14... Shift fork.

Claims

[Scope of utility model registration request]

A clutch hub spline-fitted onto a shaft supported by a wall of a transmission case, a hub sleeve spline-fitted onto the outer periphery of the hub and moved in the axial direction of the clutch hub outer periphery by a fork of a fork shaft, and a clutch hub outer periphery. A Borgwarna type synchronized mesh mechanism includes a shifting key that is fitted into a key groove formed in the clutch hub and is pressed against an internal spline of the hub sleeve by a key spring, the key groove of the clutch hub is The inner side of the hub in the radial direction is formed into a stepped cross section with a groove width wider than the outer side, and the flange that engages with the stepped surface of the keyway is shaped into a shifting key. When assembling the shifting key and inserting the hub sleeve from the second end of the clutch hub, make sure that the internal spline end surface of the hub sleeve does not come into contact with the one end surface of the shifting key and interfere with the insertion and insertion of the knob sleeve. A synchromesh mechanism for a transmission, characterized in that an inclined surface for pushing down a shifting key is formed on at least one end surface of an internal spline end surface of a hub sleeve or one end surface of a shifting key.