JPS6331309Y2

JPS6331309Y2 -

Info

Publication number: JPS6331309Y2
Application number: JP14001480U
Authority: JP
Priority date: 1980-09-30
Filing date: 1980-09-30
Publication date: 1988-08-22
Also published as: JPS5762330U

Description

【考案の詳細な説明】本考案は操作軸の操作によつて回転するカムに
設けた凹凸によつて接触子の開閉を行うカムスイ
ツチに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cam switch that opens and closes a contactor by means of projections and depressions provided on a cam that rotates when an operating shaft is operated.

カムスイツチは、およそ接触子ケースに設けた
固定接触子、この固定接触子に接離する可動接触
子、この可動接触子を支持するホルダー、このホ
ルダーを接触子の接触方向に圧接する接触子ばね
及び同ホルダーの先端部が当接する凹凸面を形成
したカムにより構成されている。従来のカムスイ
ツチでは、第１図に示すように接触子ばねＳの他
端はケースＣと一体の壁面Ｗに形成されたＵ溝内
に支持されて左右及び下方向に対しては接触子ば
ねの移動が制限されるが、上方向に対しては移動
可能なため、特にカムを組み込む場合や、他のユ
ニツトと連結する場合などに当該接触子ばねが飛
び出すなど作業性が著しく悪いという欠点があつ
た。この接触子ばねを支持する方法としてＵ溝を
設けたのはケースの成型上の問題があるからであ
る。 A cam switch generally includes a fixed contact provided in a contact case, a movable contact that moves toward and away from the fixed contact, a holder that supports the movable contact, a contact spring that presses the holder in the contact direction of the contact, and a movable contact that moves toward and away from the fixed contact. It consists of a cam with an uneven surface that the tip of the holder comes into contact with. In a conventional cam switch, as shown in Fig. 1, the other end of the contact spring S is supported in a U groove formed in a wall W integral with the case C, and the contact spring is Movement is restricted, but since it is possible to move upward, there is a drawback that workability is extremely poor, especially when incorporating a cam or connecting with other units, such as the contact springs popping out. Ta. The reason why a U-groove is provided as a method of supporting this contact spring is because there is a problem in molding the case.

本考案は、この従来例における壁面Ｗに相当す
る部分をケースと別体に成型し、接触子ばねを確
実に支持する構造を別体の壁面（以下ばね支持体
と称する）に形成し、このばね支持体をケースに
装着する構成とすることにより従来の欠点を解消
しようとするものである。 In the present invention, a portion corresponding to the wall surface W in the conventional example is molded separately from the case, and a structure that reliably supports the contact spring is formed on the separate wall surface (hereinafter referred to as a spring support). The present invention attempts to overcome the drawbacks of the prior art by attaching the spring support to the case.

以下、本考案を第２図〜第４図に示す実施例に
基いて設明すれば、ケース１には固定接触子２が
まず装着され、続いて可動接触子３及び接触子ば
ね４を装着したホルダー５が取り付けられ、接触
子ばね４の背部に、ばね支持体６が装着される。
ばね支持体６の側部には段部６ａが形成され、ケ
ースの溝１ａに上方より嵌合可能となつている。
また撓み防止の為、ばね支持体６の中央部の上下
面には突起６ｂが、ケース１の底面には凹部１ｂ
がそれぞれ設けられている。また、ばね支持体６
の内壁面には接触子ばね４の後端部を嵌合するば
ね受６ｃが設けられる。なお、このばね受は接触
子ばね４のコイル径よりも小径の突起としても良
い。また、ばね支持体６を透明な樹脂材にて構成
することにより、外部より接点の開閉状態を確認
することができる。 Hereinafter, if the present invention is established based on the embodiment shown in FIGS. 2 to 4, the fixed contact 2 is first installed in the case 1, and then the movable contact 3 and the contact spring 4 are installed. A holder 5 is attached, and a spring support 6 is attached to the back of the contact spring 4.
A step 6a is formed on the side of the spring support 6, and can be fitted into the groove 1a of the case from above.
In order to prevent bending, a projection 6b is provided on the upper and lower surfaces of the center of the spring support 6, and a recess 1b is provided on the bottom surface of the case 1.
are provided for each. In addition, the spring support 6
A spring receiver 6c into which the rear end of the contact spring 4 is fitted is provided on the inner wall surface of the contact spring 4. Note that this spring receiver may be a projection having a smaller diameter than the coil diameter of the contact spring 4. Furthermore, by forming the spring support body 6 from a transparent resin material, the open/closed state of the contacts can be confirmed from the outside.

これらの部材をケース１に装着後、カム７が嵌
め込まれる。 After these members are attached to the case 1, the cam 7 is fitted.

上述したように、本考案によれば、ばね支持体
をケースとは別体に構成して両者を一体化するこ
ととしたので、ばね支持体に接触子ばねの後端の
移動を阻止するばね受けを形成することができ、
組み立て時における接触子ばねの飛び出しが解消
でき、作業性を改善することができるという効果
を奏するものである。 As described above, according to the present invention, the spring support is configured separately from the case and the two are integrated, so that the spring support is provided with a spring that prevents the rear end of the contact spring from moving. can form a receiver,
This has the effect that it is possible to eliminate the contact spring from popping out during assembly, and to improve workability.

[Brief explanation of the drawing]

第１図は従来のカムスイツチの構造を示す要部
斜視図、第２図は本考案の実施例を示す構成分解
図、第３図は平面図、第４図は第３図の−線
における矢視図である。１……ケース、２……固定接触子、３……可動
接触子、４……接触子ばね、５……ホルダー、６
……ばね支持体、７……カム。 Fig. 1 is a perspective view of main parts showing the structure of a conventional cam switch, Fig. 2 is an exploded view showing an embodiment of the present invention, Fig. 3 is a plan view, and Fig. 4 is an arrow indicated by the - line in Fig. 3. This is a perspective view. 1... Case, 2... Fixed contact, 3... Movable contact, 4... Contact spring, 5... Holder, 6
...Spring support, 7...Cam.

Claims

[Claims for Utility Model Registration] 1. In a cam switch that is provided with a holder that moves a movable contact toward and away from a fixed contact according to the unevenness of a cam connected to an operating shaft, the holder is pressed against the circumferential surface of the cam. The part that supports the rear end of the contact spring is constructed separately from the switch case and has a structure that allows the two to be integrated, and the separately constructed spring support is provided with a part that supports the rear end of the contact spring. A cam switch characterized by being provided with a spring catch that prevents. 2. The cam switch according to claim 1, wherein the spring support is made of a transparent resin material.