JPS63190645U

JPS63190645U -

Info

Publication number: JPS63190645U
Application number: JP8345487U
Authority: JP
Priority date: 1987-05-29
Filing date: 1987-05-29
Publication date: 1988-12-08

Description

[Brief explanation of the drawing]

第１図は本考案実施例を示すドライブギヤの結
合構造の部分断面図、第２図は本考案実施例のド
ライブギヤを示すもので、第２図ａは部分断面図
、第２図ｂは側面図、第３図は従来例を示すスピ
ーメーターギヤ装置の断面図、第４図は第３図Ａ
―Ａ線に沿う断面図、第５図は従来例のドライブ
ギヤを示すもので、第５図ａは部分断面図、第５
図ｂは側面図である。符号の説明、１…デフケース、２，１２…ドラ
イブギヤ、２ａ，１２ａ…歯部内周面、２ｂ，１
２ｂ…垂直部、３，１３…係合突部、４…切欠、
５…ピニオンギヤ、６…フアイナルギヤ。 Fig. 1 is a partial sectional view of a drive gear coupling structure according to an embodiment of the present invention, Fig. 2 is a partial sectional view of a drive gear according to an embodiment of the present invention, Fig. 2a is a partial sectional view, and Fig. 2b is a partial sectional view. A side view, FIG. 3 is a sectional view of a speed meter gear device showing a conventional example, and FIG. 4 is FIG. 3A.
- A cross-sectional view along line A, Figure 5 shows a conventional drive gear, and Figure 5a is a partial cross-sectional view, Figure 5 shows a conventional drive gear.
Figure b is a side view. Explanation of symbols, 1... Differential case, 2, 12... Drive gear, 2a, 12a... Tooth inner peripheral surface, 2b, 1
2b... Vertical portion, 3, 13... Engaging protrusion, 4... Notch,
5...Pinion gear, 6...Final gear.

Claims

[Scope of utility model registration request]

A speedometer gear device in which a drive gear 12 made of synthetic resin is provided in a differential case 1 that houses a differential mechanism so as to rotate integrally with the differential case 1, and a pinion gear 5 is meshed with the drive gear 12 to obtain the rotational speed. Then, the inner peripheral surface 12a of the tooth part of the drive gear 12 is fitted into the differential case 1, and a notch 4 cut in the radial direction is formed in the engagement portion of the drive gear 12 of the differential case 1, and the drive gear 12 is fitted with a notch 4 cut in the radial direction. An engaging protrusion 13 is formed on a vertical portion 12b extending from the inner circumferential surface 12a of the tooth portion of the gear 12,
In the drive gear coupling structure in which the engagement protrusion 13 is engaged with the notch 4 of the differential case 1, the tooth inner peripheral surface 12a of the drive gear 12 and the engagement protrusion 13 are connected to each other.
A coupling structure for a drive gear in a speedometer gear device, characterized by having a groove-like gap between the drive gear and the speedometer gear.