JPS633034U

JPS633034U -

Info

Publication number: JPS633034U
Application number: JP9705286U
Authority: JP
Priority date: 1986-06-25
Filing date: 1986-06-25
Publication date: 1988-01-09

Description

[Brief explanation of the drawing]

第１図はこの考案にかかる遅延スイツチ用接点
開閉装置の一実施例を備えた遅延スイツチをあら
わす分解斜視図、第２図は前記遅延スイツチの組
立状態の内部構造をあらわす平面図、第３図は前
記遅延スイツチの正面からみた断面図、第４図は
前記遅延スイツチの側面からみた断面図、第５図
は第３図の状態からハンドルを逆方向に傾けた後
の状態をあらわす正面からみた断面図、第６図ａ
，ｂ，ｃ，ｄはそれぞれ前記実施例のカム動作に
伴う押圧子動作および接点開閉動作をあらわす説
明図であつて、第６図ａは第３図にみるカム、押
圧子および接点の状態を模式的にあらわす正面図
、第６図ｃは第５図にみるカム、押圧子および接
点の状態を模式的にあらわす正面図、第６図ｂは
第６図ａの状態から第６図ｃの状態に至るまでの
カム、押圧子および接点の状態を模式的にあらわ
す正面図、第６図ｄは第６図ｃの状態から第６図
ａの状態に至るまでのカム、押圧子および接点の
状態を模式的にあらわす正面図である。２０……遅延ユニツト、２１……回動支点、２
２……伝達軸、４０……第１のカム、４０ｂ……
緩やかな斜面、４１……第２のカム、４１ａ……
第２のカムの押圧子に向かう周縁、４７……段差
部、４８……ガイド面、５０……コイルスプリン
グ、６４ａ……固定接点、７１……押圧子、７２
……可動接点、９０……ハンドル。 FIG. 1 is an exploded perspective view showing a delay switch equipped with an embodiment of the contact opening/closing device for a delay switch according to this invention, FIG. 2 is a plan view showing the internal structure of the delay switch in an assembled state, and FIG. is a cross-sectional view of the delay switch seen from the front, FIG. 4 is a cross-sectional view of the delay switch seen from the side, and FIG. 5 is a front view showing the state after tilting the handle in the opposite direction from the state of FIG. 3. Cross-sectional view, Figure 6a
, b, c, and d are explanatory diagrams showing the pusher operation and contact opening/closing operation associated with the cam operation of the above embodiment, respectively, and FIG. 6a shows the state of the cam, pusher, and contact seen in FIG. 3. FIG. 6c is a front view schematically showing the state of the cam, pusher, and contacts shown in FIG. 5, and FIG. FIG. 6 d is a front view schematically showing the states of the cam, pusher, and contacts from the state shown in FIG. 6 c to the state shown in FIG. 6 a. FIG. 3 is a front view schematically showing the state. 20...Delay unit, 21...Rotation fulcrum, 2
2...Transmission shaft, 40...First cam, 40b...
Gentle slope, 41... second cam, 41a...
Peripheral edge of the second cam toward the pusher, 47... Step portion, 48... Guide surface, 50... Coil spring, 64a... Fixed contact, 71... Pusher, 72
...Movable contact, 90...Handle.

Claims

[Scope of utility model registration request]

A cam that rotates forward and backward around a rotation fulcrum, a contact mechanism that has a presser that contacts the periphery of the cam, and provides an urging force to rotate the cam that has been rotated in the reverse direction by the handle in the forward direction. The cam is provided with a spring and a delay unit that suppresses the rotational speed of the cam, and the cam is adapted to move the presser through forward and reverse rotational motion to cause the contact mechanism to perform the contact opening/closing operation. In a contact opening/closing device for a delay switch, which controls the pusher movement during forward rotation to delay the opening of the contacts in response to handle movement, the cam suppresses the biasing force of the spring and the delay unit. A first member that directly receives the force and is attached to the pivot point.
and a second cam that is moved according to the movement of the first cam, and the first cam has an arcuate guide surface centered on the pivot point on the side facing the presser. is formed so that the second cam is moved along this guide surface, and after the first and second cams are rotated in the forward direction, the end of the second cam and the second cam are A step part is formed between the presser and the periphery of the first cam, and while the presser is in contact with the periphery of the second cam toward the presser, the contact points are closed and the forward rotation occurs. After the movement, the contact points are opened by the presser falling into the stepped portion, and the first cam is rotated in a reverse direction from the portion forming the stepped portion between it and the second cam. A contact opening/closing device for a delay switch, characterized in that a gentle slope is formed for returning a presser that has fallen into a stepped portion when turning in the opposite direction to the periphery of a second cam when rotating in the opposite direction.