JPS6161363U

JPS6161363U -

Info

Publication number: JPS6161363U
Application number: JP14767384U
Authority: JP
Priority date: 1984-09-28
Filing date: 1984-09-28
Publication date: 1986-04-25

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例によるインボリユ
ート平歯車の横断面図、第２図は第１図の−
線の断面図、第３図はこの考案の他の実施例を示
す横断面図、第４図は第３図の−線の断面図
、第５図はこの種の従来装置を示す横断面図、第
６図は第５図の−線の断面図である。図中、１はインボリユート平歯車、２はインボ
リユート歯部、３はボス部、４は貫通孔、５は回
転軸、６は止め輪、７はリブ、８，１２は凹溝、
９はキー溝、１１は突設部である。尚、図中同一
符号は同一又は相当部分を示す。 Fig. 1 is a cross-sectional view of an involute spur gear according to an embodiment of this invention, and Fig. 2 is a -
3 is a cross-sectional view showing another embodiment of this invention, FIG. 4 is a cross-sectional view taken along the - line in FIG. 3, and FIG. 5 is a cross-sectional view showing a conventional device of this type. , FIG. 6 is a sectional view taken along the - line in FIG. 5. In the figure, 1 is an involute spur gear, 2 is an involute tooth, 3 is a boss, 4 is a through hole, 5 is a rotating shaft, 6 is a retaining ring, 7 is a rib, 8 and 12 are grooves,
9 is a keyway, and 11 is a protrusion. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) A rotating shaft having a notch in a part of its circumferential surface;
The gear is configured to transmit rotational force through convex-concave fitting with a gear boss having a rotation preventing protrusion on its inner periphery, characterized in that a lightening groove is provided inside the protruding part of the boss. gears. (2) The rotating shaft has half-moon-shaped cutout surfaces at symmetrical positions, and the gear boss that fits with this has half-moon-shaped protrusions at symmetrical positions. The gear according to claim 1 of the utility model registration claim, which is provided with a hollow groove in the shape of a shape. (3) A rectangular keyway is provided on a part of the circumferential surface of the rotating shaft, and a similarly rectangular protrusion is provided on the gear boss that fits into the keyway, and a hollow hole is provided in this protrusion. The gear according to claim 1 of the utility model registration claim, which is provided with a groove.