JPH0252235U

JPH0252235U -

Info

Publication number: JPH0252235U
Application number: JP13217088U
Authority: JP
Priority date: 1988-10-07
Filing date: 1988-10-07
Publication date: 1990-04-16
Anticipated expiration: 2003-07-23
Also published as: JPH0528669Y2

Description

[Brief explanation of drawings]

第１図は第１の具体例の一部載切斜視図；第２
Ａ図は第１図のスイツチのプランジヤが押下され
た状態のＡ方向から見た一部断面図；第２Ｂ図は
第１図のスイツチのプランジヤが静止位置にある
状態を示す断面図；第３Ａ図は第１図においてＢ
方向から見た部分断面図；第３Ｂ図はスイツチの
フツクの配置を示す図；第４図はプランジヤに加
えられる力とその変位の変化を示す図；第５Ａ図
は作動アームのシヤフトがハウジング中に取り付
けられる通常の方法を示す図；第５Ｂ図は作動ア
ームのシヤフトのハウジングへの取り付けを示す
断面図；第６Ａ図乃至第６Ｃ図は作動アーム、板
ばね、及びプランジヤ夫々を示す斜視図；第７Ａ
図及び第７Ｂ図は夫々押下されたプランジヤ、解
放されたプランジヤの第２の具体例を示す部分断
面図；第８Ａ図及び第８Ｂ図は第７Ａ図及び第７
Ｂ図と同様に第３の具体例を示す図；第９図は第
１の具体例の斜視図である。１０……ハウジング、１０３……可撓性ストツ
パ、１０４……フツク、１０２１……Ｃ字状構造
（支持部）、１３……プランジヤ、１３３……
カム、１３４……首状部分、１３７……載頭形突
部、１４……作動アーム、１４１……水平部分、
１４０２……シヤフト、１４２……カム従動部、
１５……弾性手段（コイルばね、圧縮ばね）、１
６……板ばねの端部、１６１……板ばね、１６１
′……突起、２０……メンブレンスイツチ列。 Figure 1 is a partially cutaway perspective view of the first specific example;
Figure A is a partial cross-sectional view of the switch shown in Figure 1 when viewed from direction A in a depressed state; Figure 2B is a cross-sectional view showing the plunger of the switch shown in Figure 1 in a rest position; Figure 3A The figure is B in Figure 1.
Figure 3B is a diagram showing the arrangement of the hook of the switch; Figure 4 is a diagram showing changes in the force applied to the plunger and its displacement; Figure 5A is a diagram showing the shaft of the actuating arm in the housing. FIG. 5B is a sectional view showing the attachment of the actuation arm to the shaft housing; FIGS. 6A to 6C are perspective views showing the actuation arm, leaf spring, and plunger, respectively; 7th A
7A and 7B are partial cross-sectional views showing second specific examples of the depressed plunger and the released plunger, respectively; FIGS.
A diagram showing a third specific example similar to FIG. B; FIG. 9 is a perspective view of the first specific example. DESCRIPTION OF SYMBOLS 10... Housing, 103... Flexible stopper, 104... Hook, 1021... C-shaped structure (support part), 13... Plunger, 133...
Cam, 134... Neck-like portion, 137... Head-shaped protrusion, 14... Operating arm, 141... Horizontal portion,
1402...Shaft, 142...Cam driven part,
15...Elastic means (coil spring, compression spring), 1
6... End of leaf spring, 161... Leaf spring, 161
'... Protrusion, 20... Membrane switch row.

Claims

[Claims for Utility Model Registration] (1) A housing that is installed on a row of membrane switches when in use; a plunger that is reciprocally mounted within the housing and projects outward from the housing and has a cam portion; a first portion that is pivotally supported by the housing and extends below the plunger; and a second portion that comes into contact with the cam portion of the plunger and becomes a cam driven portion;
an actuating arm having a boss on an opposite surface of the plunger that abuts the switch row; a portion extending between the plunger and the first portion of the actuating arm; a biasing resilient means; having a portion attached to the housing and normally abutting the plunger;
When the plunger is pushed down into the housing so that the boss on the actuating arm presses the membrane switch, the plunger is deflected to a predetermined position by the plunger and then elastically restored to provide a tactile sensation. a leaf spring arranged;
A keyboard switch that is used with a row of membrane switches to provide a tactile sensation. 2. The keyboard switch of claim 1, wherein said housing further comprises flexible stop means for retaining said plunger within said housing against the upward biasing force of said resilient means. (3) The keyboard switch according to claim 1 or 2, wherein the neck portion of the plunger has a tapered surface that comes into contact with the housing when the plunger is in a rest position. (4) The switch according to any one of claims 1 to 3, wherein the elastic restoring operation of the leaf spring generates a clicking sound. (5) The keyboard switch according to claim 4, wherein a protrusion is provided in the center of the leaf spring to reduce clicking noise. (6) The switch according to any one of claims 1 to 3, wherein one end of the leaf spring is attached to the housing so as not to generate a clicking sound due to the elastic restoring action of the leaf spring. (7) The actuating arm is rotatable relative to the housing by at least one shaft disposed in a C-shaped slot provided in the housing. Keyboard switch described in section. 8. The housing has a plurality of external mounting hooks for positioning on the support structure.
7. The keyboard switch according to any one of 7 to 7. (9) Any one of claims 1 to 8, wherein the elastic means comprises a compression spring between the opposing protrusion on the plunger and the first portion of the actuating arm.
Keyboard switch described in section. (10) The keyboard switch described in the embodiments with reference to the examples shown in FIGS. 1 to 4, 5B, and 6 to 9 of the accompanying drawings. (11) A membrane switch structure comprising at least one membrane switch and a keyboard switch for operating the membrane switch according to any one of claims 1 to 10.