CN219393204U - Mute dustproof micro-switch - Google Patents

Abstract

A mute dustproof micro switch comprises a shell (100), a movable reed (200), a pressing piece (300), a terminal (400) and a common terminal (500), wherein a dustproof groove (301) is formed in the surface, close to the shell (100), of the pressing piece (300), a plurality of first protrusions (302) are uniformly distributed at the bottom of the dustproof groove (301), the first protrusions (302) are higher than the end face of the dustproof groove (301), and the first protrusions (302) are matched with the inner wall face of the shell (100). According to the utility model, the dustproof grooves are formed in the surface of the pressing piece, so that dust and the like can only enter the dustproof grooves and cannot enter the micro switch from the through holes, and the service life and normal operation of the micro switch are ensured; the bottom of dustproof recess sets up a plurality of first archs that are higher than dustproof recess terminal surface for the contact of pressing piece and casing plays certain cushioning effect, thereby reaches the purpose of silence.

Description

Mute dustproof micro-switch

Technical Field

The utility model relates to the technical field of microswitches, in particular to a mute dustproof microswitch.

Background

The micro switch is a kind of switch with micro contact interval and fast acting mechanism, and is covered with casing and has driving rod with relatively small contact interval, so that the micro switch is also called sensitive switch.

The conventional micro switch in the market at present comprises a shell, a movable reed, a pressing piece, a terminal and a common terminal, wherein the shell comprises an upper cover and a base which are mutually fixed; the common terminal is provided with a second boss for clamping the circular arc-shaped elastic sheet, and the movable end of the circular arc-shaped elastic sheet is clamped on the second boss; a pressing piece in movable contact with the movable reed is arranged between the first boss and the second boss, and penetrates through the through hole on the upper cover and extends out of the upper cover; one end of the base, which is close to the movable end of the movable reed, is provided with a limiting piece, and the top end of the limiting piece extends inwards to form an extension part positioned above the movable end of the movable reed. When the movable reed rebounds, the pressing piece collides with the shell under the action of the movable reed, the sound is loud, and when the pressing piece is pressed, dust easily enters from the through hole, so that the service life of the micro switch is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the mute dustproof micro switch with good mute effect and dustproof effect.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a mute dustproof micro switch comprises a shell, a movable reed, a pressing piece, a terminal and a common terminal, wherein a dustproof groove is formed in the surface, close to the shell, of the pressing piece, a plurality of first protrusions are uniformly distributed at the bottom of the dustproof groove and are higher than the end face of the dustproof groove, and the first protrusions are matched with the inner wall face of the shell.

Further, a silica gel pad is arranged on the pressing piece, a dustproof groove is arranged on the surface of the silica gel pad, a plurality of first bulges are uniformly distributed at the bottom of the dustproof groove and are higher than the end face of the dustproof groove, and the first bulges are matched with the inner wall face of the shell.

Further, the first protrusion is cone-shaped.

Further, two second protrusions are arranged on the end face, close to the movable reed, of the pressing piece in parallel, and the second protrusions are matched with the movable reed.

Further, the second protrusion is an arc protrusion.

Compared with the prior art, the utility model has the beneficial effects that:

due to the adoption of the structural design, the surface of the pressing piece is provided with the dustproof grooves, so that dust and the like can only enter the dustproof grooves and cannot enter the micro switch from the through holes, and the service life and the normal operation of the micro switch are ensured; the bottom of dustproof recess sets up a plurality of first archs that are higher than dustproof recess terminal surface for the contact of pressing piece and casing plays certain cushioning effect, thereby reaches the purpose of silence.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

fig. 2 is a schematic exploded view of an embodiment of the present utility model.

The reference numerals in the figures are respectively:

100-shell, 200-movable reed, 300-pressing piece, 400-terminal, 500-common terminal and 300 a-silica gel pad;

301-dust-proof grooves, 302-first protrusions, 303-second protrusions.

Detailed Description

The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

Before describing the present embodiment in detail, it should be noted that the micro-switch generally includes a housing, a movable spring, a pressing member, a terminal and a common terminal, and the present utility model is mainly described in detail with respect to the pressing member, since the improvement of the present utility model relates only to the pressing member, and not to other parts of the micro-switch.

As shown in fig. 1 and 2, the mute dustproof micro switch of the present utility model comprises a housing 100, a movable contact spring 200, a pressing member 300, a terminal 400 and a common terminal 400, wherein a silica gel pad 300a is disposed on the surface of the pressing member 300 close to the housing, the silica gel pad 300a can be integrally formed with the housing 100, the two silica gel pads can also be formed by two-color injection molding, a dustproof groove 301 is disposed on the surface of the silica gel pad 300a, a plurality of first protrusions 302 are uniformly distributed at the bottom of the dustproof groove 301, the first protrusions 302 are higher than the end surface of the dustproof groove 301, and the first protrusions 302 are matched with the inner wall surface of the upper cover of the housing 100, and by the above structural design, the dustproof groove 302 is disposed on the surface of the pressing member 300, so that dust and the like can only enter the dustproof groove 302, but not enter the micro switch from the through hole, thereby ensuring the service life and normal operation of the micro switch; meanwhile, the bottom of the dustproof groove 301 is provided with a plurality of first bulges 302 higher than the end face of the dustproof groove 301, so that the contact between the pressing piece 300 and the shell 100 plays a certain role in buffering, and the purpose of silence is achieved.

To further reduce the contact area between the pressing member 300 and the housing 100 and achieve a silencing effect, the first protrusion 302 is designed to be cone-shaped.

Two second protrusions 303 are arranged on the end surface of the pressing piece 300, which is close to the movable reed 200, in parallel, and the second protrusions 303 are matched with the movable reed 200, when the pressing piece 300 is pressed, the two second protrusions 303 are contacted with the movable reed 200, so that the impact sound of the pressing piece 300 and the movable reed 200 is reduced, the sound generated in the pressing process of the pressing piece 300 is further reduced, the contact area of the pressing piece 300 and the movable reed 200 is further reduced, a mute embroiderer is realized, and the second protrusions 300 are designed to be arc-shaped protrusions.

In conclusion, the utility model solves the defects in the prior art through the structural design, and has the characteristics of reasonable design, good dustproof silencing effect and the like.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a silence micro-gap switch that prevents dust, includes a casing (100), a movable contact spring (200), a push piece (300), one terminal (400) and a common terminal (500), its characterized in that: the pressing piece (300) is provided with a dustproof groove (301) on the surface close to the shell (100), a plurality of first bulges (302) are uniformly distributed at the bottom of the dustproof groove (301), the first bulges (302) are higher than the end surface of the dustproof groove (301), and the first bulges (302) are matched with the inner wall surface of the shell (100).

2. The mute dustproof microswitch of claim 1, wherein: the pressing piece (300) is provided with a silica gel pad (300 a), the surface of the silica gel pad (300 a) is provided with a dustproof groove (301), a plurality of first bulges (302) are uniformly distributed at the bottom of the dustproof groove (301), the first bulges (302) are higher than the end face of the dustproof groove (301), and the first bulges (302) are matched with the inner wall face of the shell (100).

3. The mute dustproof micro switch as claimed in claim 2, wherein: the first protrusion (302) is cone-shaped.

4. The mute dustproof microswitch of claim 1, wherein: two second bulges (303) are arranged on the end surface of the pressing piece (300) close to the movable reed (200) in parallel, and the second bulges (303) are matched with the movable reed (200).

5. The mute dustproof micro switch as claimed in claim 4, wherein: the second protrusion (303) is an arc-shaped protrusion.