JPH0262160U

JPH0262160U -

Info

Publication number: JPH0262160U
Application number: JP14239188U
Authority: JP
Priority date: 1988-10-31
Filing date: 1988-10-31
Publication date: 1990-05-09

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すものであり、第
１図は車両の駆動系を示す概略図、第２図は変速
機の変速パターンを示す図、第３図は変速機の要
部縦断側面図、第４図は第３図の要部拡大図、第
５図は第３図の―線断面図、第６図は第５図
の―線断面図、第７図は前進用最高速段シフ
トフオークおよび可動フオークシヤフトのシフト
操作に対応した相対位置を順に示すための断面図
であつて、第７図ａは中立位置、第７図ｂは前進
シフト位置、第７図ｃは中立位置から後進シフト
位置への移動初期、第７図ｄは後進シフト位置を
それぞれ示す断面図である。２……入力側軸としてのメインシヤフト、３…
…出力側軸としてのカウンタシヤフト、１４……
特定変速段用駆動歯車としての駆動歯車、２０…
…ミツシヨンケース、２４……シフトフオーク、
２５……スリーブ、３７，３８……テーパ面、Ｂ
……制動機構、Ｅ……エンジン、Ｇ_１〜Ｇ_４……
前進用歯車列、Ｇ_５……前進用特定変速段歯車列
としての第５速歯車列、ＧＲ……後進歯車列、Ｓ
_５……同期噛合機構、Ｔ……多段歯車変速機。 The drawings show one embodiment of the present invention, and Fig. 1 is a schematic diagram showing the drive system of the vehicle, Fig. 2 is a diagram showing the shift pattern of the transmission, and Fig. 3 is a longitudinal cross-section of the main parts of the transmission. Side view, Figure 4 is an enlarged view of the main part of Figure 3, Figure 5 is a sectional view taken along the line - - of Figure 3, Figure 6 is a sectional view taken along the line - - of Figure 5, and Figure 7 is the maximum forward speed. 7A and 7B are cross-sectional views sequentially showing the relative positions of the stage shift fork and the movable fork shaft corresponding to shift operations, in which FIG. 7a shows the neutral position, FIG. 7b shows the forward shift position, and FIG. 7c shows the neutral position. FIG. 7d is a cross-sectional view showing the reverse shift position at the initial stage of movement from to the reverse shift position. 2... Main shaft as input side shaft, 3...
...Countershaft as output side shaft, 14...
Drive gear as a drive gear for specific gear stage, 20...
...Mission case, 24...Shift fork,
25... Sleeve, 37, 38... Tapered surface, B
...Brake mechanism, E...Engine, _G1 to _G4 ...
Forward gear train, G ₅ ... 5th speed gear train as a forward specific speed gear train, GR ... Reverse gear train, S
₅ ...Synchronous mesh mechanism, T...Multi-stage gear transmission.

Claims

[Scope of utility model registration request]

an input side shaft rotatably supported on the transmission case; an output side shaft parallel to the input side shaft and rotatably supported on the transmission case; and an input side shaft that can be established alternatively. A multi-speed forward gear train and a reverse gear train are interposed between the output shafts; have a sleeve that is movably coupled to the input shaft in the axial direction, and constitute a part of the forward specific speed gear train. and a synchronous meshing mechanism interposed between a drive gear for a specific gear that is relatively rotatably supported on the input shaft; and a synchronous meshing mechanism that is interposed between the input shaft; when shifting to a specific gear for forward, the sleeve is moved from the neutral position to a shift fork that is engaged with the sleeve in order to move the sleeve toward the driving gear and move the sleeve from a neutral position to the side opposite to the drive gear for a specific gear during a reverse shift; and to apply braking to the input shaft during a reverse shift a braking mechanism provided between the sleeve and the transmission case; the braking mechanism includes a tapered surface provided at an end of the sleeve opposite to the drive gear for a specific gear; and a tapered surface fixedly provided on the transmission case so as to frictionally engage the tapered surface as the sleeve moves from the neutral position to the side opposite to the specific gear drive gear. Multi-stage gear transmission for vehicles.