JPH0211729U

JPH0211729U -

Info

Publication number: JPH0211729U
Application number: JP9054588U
Authority: JP
Priority date: 1988-07-07
Filing date: 1988-07-07
Publication date: 1990-01-25

Description

[Brief explanation of the drawing]

第１〜５図は本考案の実施例を示しており、第
１図は要部の断面正面図、第２図は第１図の―
線断面拡大図、第３図は第１図の―線断面
図、第４図は第１図の―線断面図、第５図は
変速操作機構の説明図、第６図は本考案を適用可
能なトラクタの前部を示す断面側面図、第７図は
ラジエータの１例を示す斜視図である。１…変速操作機構、２…前後進切換変速機構、
１５…レバー軸、１５ａ…平板部、１６…操作レ
バー、２１…支持部材、２２…枢軸、２４…ガイ
ド板、２５…ガイド溝、２６…円錐凹部、２７…
孔、２８…ボール、２９…スプリング、３１…復
帰手段、Ｎ…中立位置、Ｆ…前進位置、Ｒ…後進
位置、Ａ…中立溝、Ｂ…第１溝、Ｃ…第２溝。 1 to 5 show an embodiment of the present invention.
Figure 3 is an enlarged cross-sectional view along the line in Figure 1, Figure 4 is a cross-sectional view along the line - in Figure 1, Figure 5 is an explanatory diagram of the speed change operation mechanism, and Figure 6 is an application of the present invention. FIG. 7 is a cross-sectional side view of the front of a possible tractor, and FIG. 7 is a perspective view of an example of a radiator. 1... Gear shift operation mechanism, 2... Forward/forward switching gear shift mechanism,
DESCRIPTION OF SYMBOLS 15... Lever shaft, 15a... Flat plate part, 16... Operation lever, 21... Support member, 22... Pivot, 24... Guide plate, 25... Guide groove, 26... Conical recess, 27...
Hole, 28... Ball, 29... Spring, 31... Return means, N... Neutral position, F... Forward position, R... Reverse position, A... Neutral groove, B... First groove, C... Second groove.

Claims

[Scope of utility model registration request]

A lever shaft that changes the speed change mechanism by rotational operation, a support member attached to this lever shaft, and a lever shaft that is pivotally supported by this support member and is connected to the lever shaft so that it can freely slide in the axial direction and rotate integrally in the circumferential direction. The control lever includes a combined operation lever and a guide plate having a guide groove that guides the rotation operation of the operation lever, and the guide groove has a neutral groove that allows the operation lever to swing in the lever axial direction. It has a first groove and a second groove that allow forward and reverse rotation in the circumferential direction of the lever shaft from both ends of the neutral groove, and between the lever shaft and the operating lever, the operating lever is rotated from both ends of the neutral groove. A speed change operation mechanism characterized by being provided with a return means for returning to approximately the center.