JPS6417055U

JPS6417055U -

Info

Publication number: JPS6417055U
Application number: JP5774287U
Authority: JP
Priority date: 1987-02-28
Filing date: 1987-04-14
Publication date: 1989-01-27

Description

[Brief explanation of the drawing]

第１図はこの考案に係る歯車装置の一実施例の
斜視図、第２図は第１図の切断正面図、第３図は
第２図の要部断面図、第４図及び第５図はリブ部
分の他例の断面図、第６図乃至第８図は上記実施
例をビデオテープレコーダに使用した図であり、
第６図及び第７図は作用説明用平面図、第８図は
第６図の裏面図である。１……基板、２……支持片、３……ウオーム、
４……ウオームホイール（第１歯車）、４ａ……
小歯車、４ｂ……大歯車、５……ウオーム軸、６
……軸孔、７……開口、８，１３……軸、９……
伝達歯車（第２図歯車）、１４……抜け止め具。 Fig. 1 is a perspective view of an embodiment of the gear device according to this invention, Fig. 2 is a cutaway front view of Fig. 1, Fig. 3 is a sectional view of the main part of Fig. 2, and Figs. 4 and 5. 6 is a sectional view of another example of the rib portion, and FIGS. 6 to 8 are views in which the above embodiment is used in a video tape recorder.
6 and 7 are plan views for explaining the operation, and FIG. 8 is a back view of FIG. 6. 1... Board, 2... Support piece, 3... Worm,
4... Worm wheel (first gear), 4a...
Small gear, 4b...Large gear, 5...Worm shaft, 6
...Shaft hole, 7...Opening, 8, 13...Shaft, 9...
Transmission gear (gear in Figure 2), 14... retainer.

Claims

[Scope of utility model registration request]

a first gear having a small gear and a large gear on the same axis; a second gear meshing with the small gear of the first gear;
In a gear device rotatably provided on a substrate,
The first gear has a large gear on the substrate side, and
The second gear is in contact with the side surface of the large gear and cannot be detached from the board, and a rib that slides in contact with the area is provided on one entire circumference of the opposing surfaces of the first and second gears. A gear device made up of