JPH0458295U

JPH0458295U -

Info

Publication number: JPH0458295U
Application number: JP10020390U
Authority: JP
Priority date: 1990-09-27
Filing date: 1990-09-27
Publication date: 1992-05-19

Description

[Brief explanation of drawings]

図面は本考案の実施例が示され、第１図から第
５図は第１実施例で、第１図は前進動作状態を示
す車輪軸自動反転機構の平面図、第２図は第１図
の−線断面側面図、第３図は車輪軸自動反転
機構の正面図、第４図は車輪軸自動反転機構の一
部断面正面図、第５図は後退動作状態を示す車輪
軸自動反転機構の平面図、第６図はカムの凸凹の
比率の変形例を示す車輪軸自動反転機構の一部断
面正面図、第７図は車輪軸自動反転機構の第２実
施例を示す後退動作状態の平面図である。３，３′，９，……従動歯車、３ａ，３ａ′，
５ａ，９ｂ，９ｃ……噛合部、５，８……駆動歯
車、６ｂ，６ｃ，８ａ，８ｂ……カム、１２……
車輪軸、Ａ……オルゴールムーブメント。 The drawings show an embodiment of the present invention, and FIGS. 1 to 5 show the first embodiment, FIG. 1 is a plan view of the automatic wheel shaft reversing mechanism showing the forward operating state, and FIG. 2 is the same as that shown in FIG. 1. Figure 3 is a front view of the automatic wheel axle reversing mechanism, Figure 4 is a partially sectional front view of the automatic wheel axle reversing mechanism, and Figure 5 is the automatic wheel axle reversing mechanism showing the reverse operation state. FIG. 6 is a partial cross-sectional front view of the automatic wheel shaft reversing mechanism showing a modified example of the ratio of the concave and convex portions of the cam, and FIG. FIG. 3, 3', 9,...driven gear, 3a, 3a',
5a, 9b, 9c... meshing portion, 5, 8... drive gear, 6b, 6c, 8a, 8b... cam, 12...
Wheel axle, A...Music box movement.

Claims

[Claims for Utility Model Registration] 1. A drive gear rotated by a drive source, and a driven gear that is movable in the axial direction, is supported on a wheel shaft, and meshes alternately with two meshing parts at right angles to the drive gear. An automatic wheel shaft reversing mechanism comprising: a gear; and a cam rotated by the drive source that switches engagement between two meshing portions of the driven gear and the drive gear. 2. The automatic wheel shaft reversing mechanism according to claim 1, wherein the driving source is a music box movement. 3. The automatic wheel shaft reversing mechanism according to claim 1, which is a utility model and is provided with a replaceable cam.