JPH03108950U

JPH03108950U -

Info

Publication number: JPH03108950U
Application number: JP1681090U
Authority: JP
Priority date: 1990-02-23
Filing date: 1990-02-23
Publication date: 1991-11-08

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例を示すもので、
その内同図イは初段歯車とガイド歯車との歯合わ
せ状態を示す正面図、同図ロはその併設状態を示
す断面図、又同図ハはこれと係合する駆動歯車の
先端部分を示す正面図である。第２図は、本考案
の第２の実施例で、その内同図イは初段歯車部の
断面図、同図ロはこれと係合する駆動歯車の先端
部分の正面図、第３図は電動機１と減速装置２と
が直結された状態を示す減速装置の一部を切欠い
た正面略図、第４図イ，ロは夫々電動機１と減速
装置２との結合作業を説明するための正面図であ
る。また、第５図は従来技術での駆動歯車と初段
歯車との結合の際の衝突状態を説明する正面略図
、第６図と第７図は駆動歯車と初段歯車との接近
状態を説明する正面略図である。１……電動機、１−１……回転子軸、１−２…
…駆動歯車、１−２１……面取り部、２……減速
装置、２−１……初段歯車、２−１１……面取り
部、２−２……出力軸、２−３……出力歯車、２
−４……嵌着部、２−５……ガイド歯車、２−５
１……面取り部。 FIG. 1 shows a first embodiment of the present invention.
In the figure, A is a front view showing the meshing state of the first stage gear and the guide gear, B is a cross-sectional view showing the state in which they are installed together, and C is the tip of the drive gear that engages with this. It is a front view. Fig. 2 shows a second embodiment of the present invention, in which A is a sectional view of the first stage gear, B is a front view of the tip of the drive gear that engages with this, and Fig. 3 is a sectional view of the first stage gear. A schematic front view with a part of the reduction gear cut away showing a state in which the electric motor 1 and the reduction gear device 2 are directly connected; FIGS. It is. In addition, FIG. 5 is a schematic front view illustrating the collision state when the driving gear and the first stage gear are coupled in the prior art, and FIGS. 6 and 7 are front views illustrating the approach state between the driving gear and the first stage gear. This is a schematic diagram. 1...Electric motor, 1-1...Rotor shaft, 1-2...
... Drive gear, 1-21 ... Chamfered part, 2 ... Reduction gear, 2-1 ... First stage gear, 2-11 ... Chamfered part, 2-2 ... Output shaft, 2-3 ... Output gear, 2
-4...Fitting part, 2-5...Guide gear, 2-5
1... Chamfered part.

Claims

[Scope of Claim for Utility Model Registration] 1. In a speed reduction device that is equipped with a gear train and is used for speed conversion of a small electric motor, etc., the first stage gear that engages with the drive gear that is the output shaft of the electric motor has the same module as the first stage gear. , another guide gear having the same number of teeth, a meshing pitch circle diameter not small, and made of a soft material is installed on the insertion side of the drive gear so as to match or almost match the tooth profile of the first stage gear. A speed reduction device characterized by: 2. The speed reduction device according to claim 1, wherein the guide gear attached to the first gear is integrally molded from synthetic resin. 3. The speed reduction device according to claim 1 or 2, wherein the outer peripheral edge of the guide gear attached to the first stage gear is chamfered so as to have a sloped surface at the end on the side of engagement with the first stage gear.