JPH01111850U

JPH01111850U -

Info

Publication number: JPH01111850U
Application number: JP715288U
Authority: JP
Priority date: 1988-01-23
Filing date: 1988-01-23
Publication date: 1989-07-27

Description

[Brief explanation of the drawing]

第１図はこの考案の一例を示すスケルトン図、
第２図はプライマリシヤフトからアウトプツトシ
ヤフトへ動力が伝達される経路を示す簡略正面図
、第３図はリバースアイドルギヤのニユートラル
状態を示す説明図、第４図は第３図のＡ―Ａ視図
、第５図はリバース変速段へのシフト動作の前工
程でリバースアイドルギヤがリバースプライマリ
ギヤに噛合つた状態の説明図、第６図は上記シフ
ト動作の中間工程でリバースアイドルギヤとアイ
ドルシヤフトとが係合した状態を示す説明図。第
７図はリバースアイドルギヤがさらにシフトされ
アイドルシヤフトとの係合が解除された状態を示
す説明図、第８図は上記シフト動作の後工程でリ
バースアイドルギヤがリバースセカンダリギヤと
噛合つた状態を示す説明図、第９図はアイドルシ
ヤフトのトルクリミツターの横断面図、第１０図
は第９図の縦断面図である。１……プライマリシヤフト、２……エンジン、
３……クラツチ、４……セカンダリシヤフト、Ｒ
Ｐ……リバースプライマリギヤ、ＲＳ……リバー
スセカンダリギヤ、ＲＩ……リバースアイドルギ
ヤ、Ｃ……変速機ケース、１１……アイドルシヤ
フト、１４……外歯、１５……内歯、１４，１５
……係合手段。 Figure 1 is a skeleton diagram showing an example of this invention.
Figure 2 is a simplified front view showing the path through which power is transmitted from the primary shaft to the output shaft, Figure 3 is an explanatory diagram showing the neutral state of the reverse idle gear, and Figure 4 is a view taken along A-A in Figure 3. Figure 5 is an explanatory diagram of the state in which the reverse idle gear is engaged with the reverse primary gear in the pre-stage shift operation to the reverse gear stage, and Figure 6 is an explanatory diagram of the state in which the reverse idle gear and the idle shaft are engaged in the intermediate stage of the above-mentioned shift operation. FIG. FIG. 7 is an explanatory diagram showing a state in which the reverse idle gear has been further shifted and disengaged from the idle shaft, and FIG. 8 is an explanatory diagram showing a state in which the reverse idle gear has engaged with the reverse secondary gear in the subsequent process of the above shift operation. FIG. 9 is a cross-sectional view of the torque limiter of the idle shaft, and FIG. 10 is a vertical cross-sectional view of FIG. 9. 1...Primary shaft, 2...Engine,
3...Clutch, 4...Secondary shaft, R
P... Reverse primary gear, RS... Reverse secondary gear, RI... Reverse idle gear, C... Transmission case, 11... Idle shaft, 14... External teeth, 15... Internal teeth, 14, 15
...Engagement means.

Claims

[Scope of utility model registration request]

A primary shaft connected to the engine via a clutch, a secondary shaft having a gear train meshing with the gear train on the primary shaft, a reverse primary gear disposed on the primary shaft, and a reverse gear disposed on the secondary shaft. Equipped with a selective sliding reverse gear device consisting of a secondary gear and a reverse idle gear that meshes with both of these gears, the reverse idle gear is switched to the reverse primary gear in the final step of shifting to the reverse gear by operating the shift lever. In a gear transmission that meshes with a reverse secondary gear while meshing with a gear, the reverse idle gear is rotatably and slidably disposed on an idle shaft fixed to a transmission case, and the gear is shifted to a reverse gear. 1. A reverse shift device for a gear transmission, comprising an engaging means for engaging the reverse idle gear and the idle shaft in an intermediate step of the shift operation.