JPS639561U

JPS639561U -

Info

Publication number: JPS639561U
Application number: JP10394486U
Authority: JP
Priority date: 1986-07-07
Filing date: 1986-07-07
Publication date: 1988-01-22
Anticipated expiration: 2001-07-07
Also published as: JPH07772Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例を示す要部の側面図
、第２図は同作用状態を示す側面図、第３図は同
鞍乗型４輪車の側面図、第４図は同シフトカム駆
動系の詳細を示す第５図Ｂ―Ｂ矢視展開側面図、
第５図は同第４図Ａ―Ａ矢視側面図、第６図〜第
８図は同シフトカム駆動系の作用状態を示す側面
図で、第６図はサブドライブ機構によりシフトカ
ムがリバースポジシヨンに移つたとき、第７図は
サブドライブ機構によるロウポジシヨン、第８図
はメインドライブ機構によるセカンドポジシヨン
をそれぞれ示し、第９図はメインドライブ機構に
よりロウからニユートラルポジシヨンへ送られた
ときのシフトカムと送り爪ポールとの関係を示す
側面図である。６……足動コントロールレバー、６ａ……支軸
、７……手動コントロールレバー、７ａ……支軸
、８……手動コントロール中間レバー、８ａ……
支軸、９……ケーブル、１０……シフトカム、１
４Ｎ，１４Ｌ，１４―２ｎｄ，１４―３ｒｄ，１
４Ｈ……シフトピン、１５……送り爪ポール、１
６……揺動レバー、１７ａ，１７ｂ……送り爪、
１８……リンクアーム、２５……カムストツパ、
２６……プレツシヤローラ、２７……揺動アーム
、２８ａ，２８ｂ……ドライブピン、２９ａ，２
９ｂ……ドリブン溝、３０……カムピン、３１…
…ロータリスペーサ、３１ａ……突起、３２ａ，
３２ｂ……カムフエース、３３……ストツパ、３
４，３９……ストツパピン、３５……ストツパ溝
、３８，４０……ストツパ縁。 Fig. 1 is a side view of the main parts showing an embodiment of this invention, Fig. 2 is a side view showing the same operating state, Fig. 3 is a side view of the same straddle type four-wheel vehicle, and Fig. 4 is the same shift cam. Fig. 5 BB arrow developed side view showing details of the drive system;
Fig. 5 is a side view taken along the arrow A--A in Fig. 4, Figs. 6 to 8 are side views showing the operating state of the shift cam drive system, and Fig. 6 shows the shift cam in the reverse position by the sub-drive mechanism. 7 shows the low position by the sub-drive mechanism, FIG. 8 shows the second position by the main drive mechanism, and FIG. 9 shows the state when the main drive mechanism moves from the row to the neutral position. FIG. 3 is a side view showing the relationship between a shift cam and a feed pawl pole. 6... Foot control lever, 6a... Support shaft, 7... Manual control lever, 7a... Support shaft, 8... Manual control intermediate lever, 8a...
Support shaft, 9... Cable, 10... Shift cam, 1
4N, 14L, 14-2nd, 14-3rd, 1
4H...Shift pin, 15...Feed claw pole, 1
6... Swing lever, 17a, 17b... Feed claw,
18...link arm, 25...cam stopper,
26...pressure roller, 27...swing arm, 28a, 28b...drive pin, 29a, 2
9b...Driven groove, 30...Cam pin, 31...
...Rotary spacer, 31a...Protrusion, 32a,
32b...cam face, 33...stoppa, 3
4, 39... Stopper pin, 35... Stopper groove, 38, 40... Stopper edge.

Claims

[Scope of utility model registration request]

Equipped with a rotary shift cam that shifts up and down the transmission gear mechanism in the order of reverse, neutral, low, second, third...high, the shift cam is controlled by a shift pin placed on the end face of the shift cam and a feed pawl pole pivoted on a swing lever. a main drive mechanism that rotates the shift cam in forward and reverse directions, and a sub-drive mechanism that rotates the shift cam in forward and reverse directions using an approximate pin gear mechanism consisting of a driven groove placed on the outer periphery of the shift cam end and a drive pin placed on the outer periphery of the swing arm. The main drive mechanism is set in such a way that one of the shift pins mentioned above is missing, making it impossible to shift gears to reverse, and the sub-drive mechanism is set so that the swing stroke range of the fan-shaped swing arm is restricted, allowing for reverse, neutral, and reverse gear shifts. In the case where the row only position is selected, a rotary spacer with a rotatable protrusion is pivotally supported on the end face of the shift cam, and a cam face formed on the outer periphery of the rotary spacer is engaged with a cam pin protruding from the swing arm to perform swinging. A speed change control device for a vehicle, characterized in that the arm rotates in the same direction at the same time when the shift cam is sent from neutral to the reverse position, and the projection lifts the feed pawl pole outward.