JPS6132654U

JPS6132654U - Neutral holding structure of hydraulic continuously variable transmission

Info

Publication number: JPS6132654U
Application number: JP11726084U
Authority: JP
Inventors: 健二近藤
Original assignee: 株式会社クボタ
Priority date: 1984-07-30
Filing date: 1984-07-30
Publication date: 1986-02-27

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]

第１図は中立保持構造の第１実施例を示す側面図、第２
図は同一部切欠正面図、第３図は第１図の■一■線断面
図、第４図は変速操作部の側面図、第５図は農用トラク
タの全体側面図、第６図は中立保持構造の第２実施例を
示す一部切欠側面図である。３・・・・・・斜板支軸、４・・・・・・カム板、４ａ
・・・・・・傾斜カム面、２１・・・・・・接当具、Ｈ
・・・・・・油圧式無段変速装置、Ｎ・・・・・・中立
位置、Ｆ・・・・・・正転変速状態、Ｒ・・・・・・逆
転変速状態。Figure 1 is a side view showing the first embodiment of the neutral holding structure;
The figure is a partially cutaway front view, Figure 3 is a cross-sectional view taken along line 1, Figure 4 is a side view of the gear shift operation section, Figure 5 is an overall side view of the agricultural tractor, and Figure 6 is a neutral view. FIG. 7 is a partially cutaway side view showing a second embodiment of the holding structure. 3... Swash plate support shaft, 4... Cam plate, 4a
...Incline cam surface, 21...Abutment tool, H
... Hydraulic continuously variable transmission, N ... Neutral position, F ... Forward speed change state, R ... Reverse speed change state.

Claims

[Scope of utility model registration request]

This swash plate support shaft is attached to the swash plate support shaft 3 of the hydraulic continuously variable transmission device H that operates the hydraulic continuously variable transmission device H between a forward speed change state F and a reverse speed change state R with the neutral position N as the boundary. A cam plate 4 having a cam surface 4a for returning the swash plate support shaft 3 to the neutral force position N is fixed, and a contact tool 21 that restricts rotation around the swash plate support shaft 3 is pressed onto the cam surface 4a. The swash plate support shaft 3
In the neutral holding structure of the hydraulic continuously variable transmission device configured to return to the neutral position N, the normal rotation speed change state F
Of the entire range of gear shifting operations in and reverse gear shifting state R,
A neutral holding structure for a hydraulic continuously variable transmission in which the cam surface 4a is formed only near the neutral position N.