JP2525260Y2 - Small switch - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a small switch used as a detection switch of, for example, a cassette or floppy disk for a VTR. The present invention relates to a small switch capable of obtaining a pressing stroke length.

(B) Conventional technology Normally, as shown in FIG. 7, a small switch of this type includes a push button 71, a switch body 72 which is switched in conjunction with the push operation of the push button 71, and And a switch base 73 that is integrally held.

However, the push stroke of the push button is controlled with the downsizing of the switch, and the movement after the operation necessary for the operation feeling particularly at the time of the push operation cannot be sufficiently obtained, so that it is not possible to clearly determine the switching operation. However, the operation performance of the switch is low.

(C) Problems to be solved by the present invention This invention is not limited to a combination structure with a panel or the like, but has a configuration of the switch itself. For the purpose of providing.

(D) Means for Solving the Problems The present invention is directed to a box-shaped push button having a lower surface opened and an engagement portion formed on a side surface, and a push button which can be provided in the lower surface opening of the push button. A switch body that performs a switching operation in conjunction with a pressing operation of a built-in switch body, a switch body having a terminal provided at a lower portion thereof, and a switch body capable of allowing the terminal to hang down can be housed therein, An engagement portion, a switch base having an engagement portion engageable in a state where the push button is allowed to be pressed and returned, and a movable spring that can be housed in a lower surface opening of the push button; In a state in which a movable spring elastically displaced in conjunction with the pressing operation of the push button is interposed between the push button and the switch body provided in the lower surface opening of the push button, the movable spring and the switch body are Press A small switch that is fitted in the lower surface opening of the push button, the switch base is fitted to the lower surface, and the engaging portion of the switch base is engaged with the engaging portion of the push button to be integrally fitted. It is characterized by.

According to the present invention, the movable spring elastically displaces in a compressed state in conjunction with the pressing operation of the push button, and the movable spring attaches the switch body side while absorbing the pressing force at the time of the elastic displacement. When the pushing force is released and the pressing force is released, the push button and the switch mechanism return to their original positions and are turned off.

(F) Effect of the invention As a result, a long pressing stroke can be obtained by the amount of elastic displacement of the movable spring, and the urging force of the movable spring acts from the initial pressing to the pressing of the push button, so that good operation can be performed through the push button throughout. The touch can be obtained, and even if the switch is downsized, a clear switching operation with a sufficiently long pressing stroke can be obtained. Moreover, such an effect can be achieved by the configuration of the switch itself, without depending on the combination structure with the panel or the like.

Furthermore, the movable spring and the switch body are mounted inside the push button, and the switch base is fitted to the push button to form an integral fit. A switch is obtained, and if it is set to the shape of a push button necessary for operation, the lower switch base, terminals, etc. are formed in a compact unit without widening in the horizontal direction, and as a result, a plurality of switches The switches can be arranged close to each other, and the mounting density of the switches is improved.

(G) Embodiment One embodiment of the present invention will be described in detail below with reference to the drawings.

The drawings show a miniature switch. In FIGS. 1 and 2, the miniature switch 11 comprises a push button 12 and a movable spring.
13 and the switch body 14 are integrated into a switch base 15, and the push button 12 located at the upper part is provided in a box shape with an open lower surface. 14 are mounted on the switch base 15 in a state of being housed therein, and engagement windows 12a, 12a for engaging and fixing to the switch base 15 are opened on both side surfaces.

The movable spring 13 described above raises and raises a cut-and-raised piece 13a with one side as a fulcrum in a substantially horizontal state at the center of the metal elastic plate, and places the cut-and-raised piece 13a on the inner surface of the upper push button 12. And the frame portion 13b of the spring is assembled with the plunger 16 projecting above the switch body 14 below.

The switch body 14 has a plunger 16 which is urged and protruded from the upper surface so as to be able to be pressed down, a switch mechanism is built in the inside in conjunction with the plunger 16, and terminals 17 are respectively provided at four lower corners,
These four terminals 17 are fitted and fixed in a state where they are suspended below the notches 18 at the four corners of the switch base 15, and the movable spring 13 and the switch body are provided inside the switch base 15.
When the switch 14 is mounted, the engaging claws 15a, 15a formed stepwise on both side surfaces of the switch base 15
It is engaged with 2a and 12a from inside and integrated.

The small switch 11 configured in this manner is a push button.
When the pressing operation of the switch 12 is performed, the cut-and-raised piece 13a of the movable spring 13 is elastically displaced in a compressed state by receiving this pressing force. The side plunger 16 is urged downward, and based on this, the inner switch mechanism is turned ON. As a result, the pressing operation force via the push button 12 is absorbed by the movable spring 13, and the pressing stroke can be taken longer by the amount of elastic displacement.

When the pressing force of the push button 12 is released, the push button 12 and the internal switch mechanism return to their original positions and are turned off based on the returning force of the plunger 16.

Further, the movable spring 13 is not limited to the above-described cut-and-raised shape, and has a spring shape suitable for various switch structures. For example, as shown in FIGS. 3 and 4, a concave movable spring 31 or a coil-shaped movable spring as shown in FIG.
Use 51.

Further, similarly, as shown in FIG. 6, the shape of the push button 12 is such that an engaging window 62, 62 whose opening does not reach the upper surface is opened on the side surface of the box-shaped push button 61 having an open lower surface. Use any shape.

As described above, the pressing stroke can be taken long by the amount of elastic displacement of the movable spring, and the biasing force of the movable spring acts from the initial pressing of the push button to the pressing after the ON operation, so that a good operation feeling can be obtained through the push button from beginning to end. can get. As a result, even if the switch is miniaturized, a clear switching operation with a sufficiently long pressing stroke can be obtained, and such an effect can be achieved by the structure of the switch itself, not by a structure combined with a panel or the like. can do.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is an exploded perspective view of a small switch, FIG. 2 is an external perspective view of the small switch, and FIG. 3 is another embodiment of a movable spring. FIG. 4 is a partial longitudinal sectional view showing another embodiment of the small switch, FIG. 5 is a front view showing another embodiment of the movable spring, and FIG. 6 is another push button. FIG. 7 is an exploded perspective view of a conventional small switch. 11… Small switch, 2,61… Push button 12a… Open window, 13,31,51… Movable spring 14… Switch body, 15… Switch base 15a… Engagement claw, 17… Terminal

Claims (1)

(57) [Scope of request for utility model registration] 1. A box-shaped push button (12) having a lower surface opened and engaging portions (12a, 12a) formed on a side surface; A switch mechanism (14) with a built-in switch mechanism that performs switching operation in conjunction with the pressing operation of the push button (12). Allow the switch body (14)
Can be fitted, and the engaging portions (12a, 12a) of the push button (12) can be engaged with the engaging portions (15a, A switch base (15) formed with the push button (12), and a movable spring (13) that can be housed in the lower surface opening of the push button (12); A movable spring (13), which is elastically displaced in conjunction with the pressing operation of the push button (12), is interposed between the movable body (14) and the switch body (14) provided in the lower opening. And the switch body (14) are provided inside the opening of the lower surface of the push button (12), and the switch base (15) is fitted to the lower surface thereof, and the engaging portions (18a, 18a) of the switch base (15) are fitted. A small switch that engages with the engaging portions (12a, 12a) of the push button (12) and is integrally fitted.