CN216698156U

CN216698156U - Double-layer shell dustproof and silent touch switch structure

Info

Publication number: CN216698156U
Application number: CN202123019196.3U
Authority: CN
Inventors: 饶波安
Original assignee: Zhejiang Changfeng Electronic Co ltd
Current assignee: Zhejiang Changfeng Electronic Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-06-07
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a dustproof and mute touch switch structure with a double-layer shell, which comprises an outer shell, an inner shell, at least two terminals, a touch elastic sheet and a touch switch pressing piece, wherein the outer shell is provided with a plurality of through holes; the inner shell is covered above the area where the light-touch elastic sheet, the first closed end and the second closed end are located together to form first heavy dust prevention and mute isolation; and the shell body has the first through hole of dodging, the interior casing has the second and dodges the through hole, the switch pressing member that dabs passes first through hole, the second of dodging and dodges the through hole to press down and act on and dabbing the shell fragment, make to dabbing the shell fragment and connect first closed end, second closed end, the shell body is to dabbing the shell fragment, first closed end, the regional second that forms of second closed end together and dustproof and silence isolation.

Description

Double-layer shell dustproof and mute touch switch structure

Technical Field

The utility model relates to the technical field of touch switch structures, in particular to a dustproof and silent touch switch structure with a double-layer shell, which is mainly used for a key switch.

Background

The mouse industry is increasingly demanding to find a switch with small sound and reliable operation. Although the touch switch in the market generally claims to have a mute effect, in fact, the mute effect is limited and is difficult to further improve. In addition, after multiple uses, the tact switch is easy to have the phenomena of dust and dirt entering, the optimal usability of the switch is influenced, and the service life of an important tact switch structure in the switch is also influenced.

Therefore, a new technical solution needs to be developed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the main objective of the present invention is to provide a dustproof and silent tact switch structure with a double-layer housing, which has better dustproof and silent effects due to the isolation of the double-layer housing by the outer housing and the inner housing, and has a function of guiding the pressing direction due to the arrangement of the second avoiding through hole, so that the pressing action of the tact switch is more accurate.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a dustproof and silent light-touch switch structure with a double-layer shell comprises an outer shell, an inner shell, at least two terminals, a light-touch shrapnel and a light-touch switch pressing piece; wherein:

the inner shell is covered above the area where the light-touch elastic sheet, the first closed end and the second closed end are located together to form first heavy dust prevention and mute isolation;

and the shell body has the first through hole of dodging, the interior casing has the second and dodges the through hole, the switch pressing member that dabs passes first through hole, the second of dodging and dodges the through hole to press down and act on and dabbing the shell fragment, make to dabbing the shell fragment and connect first closed end, second closed end, the shell body is to dabbing the shell fragment, first closed end, the regional second that forms of second closed end together and dustproof and silence isolation.

As a preferable scheme, the outer shell comprises a base and a cavity shell assembled on the base, and the accommodating cavity is positioned between the upper part of the base and the inner wall surface of the cavity shell; the terminal sets up on the base, first closed end, second closed end expose respectively and locate the top side of base, the lower extreme of interior casing combines together the location with the top side of base and forms the light switch chamber with enclosing.

As a preferred scheme, the chamber shell comprises a middle cover and an upper cover, wherein the upper end and the lower end of the middle cover are open and are provided with peripheral side walls, the base is arranged at the position corresponding to the lower end opening of the middle cover, and the upper cover is arranged at the position corresponding to the upper end opening of the middle cover.

Preferably, the inner shell has an inner shell top wall and an inner shell peripheral side wall connected to the lower part of the periphery of the inner shell top wall, and the lower part of the inner shell peripheral side wall is positioned in combination with the inner bottom surface of the accommodating cavity.

As an optimal scheme, the upper cover is provided with a downwards extending buckle arm, a first clamping point is convexly arranged on the outer side of the buckle arm, a second clamping point is convexly arranged on the inner wall surface of the peripheral side wall of the middle cover, the buckle arm of the upper cover is clamped into the middle cover from top to bottom, the buckle arm is inwards deformed in the clamping process until the first clamping point is limited below the second clamping point, and at the moment, the buckle arm is outwards elastically reset.

As a preferred scheme, the lower extreme of first stuck point is provided with first guide surface, the upper end of second stuck point is provided with first guide surface, first stuck point is inside along the inside extrusion card of second guide surface card income well lid through first guide surface.

Preferably, the lower end of the light touch switch pressing piece is provided with an elastic rubber piece, and the elastic rubber piece presses the light touch elastic piece.

Preferably, the tact elastic piece is an upwardly arched snap piece, and the tact switch pressing piece deforms downwards from an upper arch shape after pressing the tact elastic piece to conduct the first closed end and the second closed end.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and particularly, according to the technical scheme, the inner shell is covered above the area where the light-touch elastic sheet, the first closed end and the second closed end are located together to form first heavy dustproof and mute isolation, and the outer shell forms second heavy dustproof and mute isolation for the area where the light-touch elastic sheet, the first closed end and the second closed end are located together.

Secondly, install the elastic rubber spare through the lower extreme of dabbing the switch pressing piece, utilize the elastic rubber spare to press down and act on and dabber shell fragment, combine the dome piece structure, on the one hand, increase dabber switch and press down the stroke, on the other hand plays the guard action to dabber shell fragment, is difficult for appearing dabber shell fragment overstrain impaired, has improved the switch life-span.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is an assembled view of a first embodiment of the present invention;

FIG. 2 is an exploded view of a first embodiment of the present invention;

FIG. 3 is a cross-sectional view of a first embodiment of the present invention;

FIG. 4 is a partially exploded view of a first embodiment of the present invention;

FIG. 5 is another partially exploded view of a first embodiment of the present invention;

FIG. 6 is an assembled view of a second embodiment of the present invention;

FIG. 7 is a partial cross-sectional view of a second embodiment of the present invention;

FIG. 8 is a partially exploded view of a second embodiment of the present invention;

FIG. 9 is a perspective view of an inner housing of a second embodiment of the present invention;

fig. 10 is another perspective view of the inner housing according to the second embodiment of the present invention.

The attached drawings indicate the following:

outer casing 1

The accommodating cavity 11, the first avoiding through hole 12, the base 101, the cavity shell 102, the middle cover 103, the upper cover 104, the buckling arm 105, the first buckling point 106, the second buckling point 107, the first anti-disengaging part 111 and the second anti-disengaging part 112

Inner housing 2

The second avoiding through hole 21, the top wall 201 of the inner shell and the peripheral side wall 202 of the inner shell

A first terminal 3, a first closed end 31,

Second terminal 4, second closed end 41

Light touch spring 5

Tact switch pressing member 6

Elastic rubber piece 61, first pressing piece 601, second pressing piece 602, light touch switch cavity 62 and return spring 63

A driving reed 7, a microswitch button 8, a third terminal 81 and a microswitch elastic sheet 82.

Detailed Description

Fig. 1 to 10 show specific structures of various embodiments of the present invention. Fig. 1 to 5 show the structure of a first embodiment (a key switch product capable of switching between sound and silence), and fig. 6 to 10 show the structure of a second embodiment (a separately installed mute light touch switch product), so it can be seen that the dustproof and silent light touch switch structure with a double-layer shell according to the present invention can be applied to a mute light touch switch product, and can also be applied to a key switch product capable of switching between sound and silence, without limitation.

A double-layer shell dustproof and mute touch switch structure comprises an outer shell 1, an inner shell 2, at least two terminals (respectively defined as a first terminal 3 and a second terminal 4), a touch elastic sheet 5 and a touch switch pressing piece 6; wherein:

the inner shell body 1 is internally provided with an accommodating cavity 11, the inner bottom surfaces of the two terminals in the accommodating cavity 11 are respectively provided with a first closed end 31 and a second closed end 41 in an exposed mode, the light-touch elastic sheet 5 is arranged above the first closed end 31 and the second closed end 41, and the inner shell body 2 covers the upper part of the area where the light-touch elastic sheet 5, the first closed end 31 and the second closed end 41 are located together to form first heavy dust prevention and mute isolation;

and, shell body 1 has the first through-hole 12 of dodging, interior casing 2 has the second and dodges through-hole 21, dab switch pressing member 6 and pass the first through-hole 12 of dodging, the second dodges through-hole 21 to press down and act on and dab shell fragment 5, make and dab shell fragment 5 and connect first closed end 31, second closed end 41, shell body 1 is to dabbing shell fragment 5, first closed end 31, the regional formation second that second closed end 41 together is heavily dustproof and silence is kept apart.

The outer shell 1 comprises a base 101 and a cavity shell 102 assembled on the base 101, and the accommodating cavity 11 is positioned between the upper part of the base 101 and the inner wall surface of the cavity shell 102; the terminals are arranged on the base 101, the first closed end 31 and the second closed end 41 are respectively exposed on the top side of the base 101, and the lower end of the inner housing 2 is combined with the top side of the base 101 and positioned to form a tact switch cavity 62. The cavity shell 102 comprises a middle cover 103 and an upper cover 104, wherein the upper end and the lower end of the middle cover 103 are open and are provided with peripheral side walls, the base 101 is arranged at the position corresponding to the lower end opening of the middle cover 103, and the upper cover 104 is arranged at the position corresponding to the upper end opening of the middle cover 103. The upper cover 104 is provided with a downwardly extending buckling arm 105, a first buckling point 106 is convexly arranged on the outer side of the buckling arm 105, a second buckling point 107 is convexly arranged on the inner wall surface of the peripheral side wall of the middle cover 103, the buckling arm 105 of the upper cover 104 is clamped into the middle cover 103 from top to bottom, the buckling arm 105 deforms inwards in the clamping process until the first buckling point 106 is limited below the second buckling point 107, and at the moment, the buckling arm 105 elastically resets outwards. The lower extreme of first stuck point 106 is provided with first guide surface, the upper end of second stuck point 107 is provided with first guide surface, first stuck point 106 is gone up along second guide surface extrusion card through first guide surface and is gone into inside the middle cover 103.

The inner housing 2 has an inner housing top wall 201 and an inner housing peripheral side wall 202 connected to a lower portion of a periphery of the inner housing top wall 201, and a lower portion of the inner housing peripheral side wall 202 is positioned to be engaged with an inner bottom surface of the accommodating chamber 11.

The lower end of the light touch switch pressing piece 6 is provided with an elastic rubber piece 61, and the elastic rubber piece 61 presses the light touch elastic piece 5. The light-touch elastic sheet 5 is an upwardly arched snap sheet, and the light-touch switch pressing piece 6 is deformed downwards from an upper arch shape after pressing the light-touch elastic sheet 5 to conduct the first closed end 31 and the second closed end 41; the elastic rubber piece 61 is preferably made of silica gel, can increase the pressing stroke of the tact switch, also has a protection effect on the tact elastic piece 5, is not easy to cause overstrain damage of the tact elastic piece 5, and prolongs the service life of the switch.

The light touch switch pressing piece 6 comprises a first pressing piece 601 and a second pressing piece 602, the first pressing piece 601 penetrates through the first avoiding through hole 12 and presses and acts on the second pressing piece 602, and the second pressing piece 602 penetrates through the second avoiding through hole 21 and presses and acts on the light touch elastic piece 5. Specifically, a return spring 63 is provided on the first pressing member 601, an elastic rubber member 61 is provided at the lower end of the second pressing member 602, and the second pressing member 602 presses the light touch elastic sheet 5 through the elastic rubber member 61. The first pressing member 601 has a first stopper 111 restricted in the accommodating chamber 11 of the outer case 1, and the second pressing member 602 has a second stopper 112 restricted in the inner case 2.

As shown in fig. 1 to 3, as a switchable sound and silence key switch product, the switchable sound and silence key switch product further includes a driving reed 7, a microswitch button 8, a third terminal 81, and a micro-spring plate 82, wherein the second pressing member 602 is designed into a structural form of an outer button, the microswitch and a tact switch are switched by rotating the outer button, so as to achieve sound and silence switching, the outer button is pressed, and the microswitch button 8 or the tact switch pressing member 6 is correspondingly driven by the outer button, so as to control the pressing of the microswitch spring plate 82 or the tact spring plate 5.

The design of the utility model is characterized in that the outer shell 1 and the inner shell 2 are mainly arranged, the inner shell 2 covers the area where the light-touch elastic sheet 5, the first closed end 31 and the second closed end 41 are located together to form first heavy dustproof and mute isolation, and the outer shell 1 forms second heavy dustproof and mute isolation for the area where the light-touch elastic sheet 5, the first closed end 31 and the second closed end 41 are located together, so that the dustproof and mute effect is better due to the isolation of the double-layer shell, and meanwhile, the arrangement of the second avoidance through hole 21 can also play a role in guiding the pressing direction, so that the pressing action of the light-touch switch is more accurate.

Secondly, install elasticity rubber part 61 through the lower extreme that dabs switch pressing member 6, utilize elasticity rubber part 61 to press down and act on and dab shell fragment 5, combine the dome structure, on the one hand, increase and dab the switch and press down the stroke, on the other hand plays the guard action to dabbing shell fragment 5, is difficult for appearing dabbing shell fragment 5 and overstrain impaired, has improved the switch life-span.

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "upper", "lower", "front", "rear", "left", "right", etc., indicating the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and operation, and should not be construed as limiting the specific scope of the present invention.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. The utility model provides a double-deck casing is dustproof and dabs switch structure of silence which characterized in that: the touch switch comprises an outer shell, an inner shell, at least two terminals, a touch elastic sheet and a touch switch pressing piece; wherein:

2. The dustproof and silent tact switch structure of the double-layer shell according to claim 1, wherein: the outer shell comprises a base and a cavity shell assembled on the base, and the accommodating cavity is positioned between the upper part of the base and the inner wall surface of the cavity shell; the terminal sets up on the base, first closed end, second closed end expose respectively and locate the top side of base, the lower extreme of interior casing combines together the location with the top side of base and forms the light switch chamber with enclosing.

3. The dustproof and silent tact switch structure of the double-layer shell according to claim 2, characterized in that: the chamber shell is including well lid and upper cover, the upper and lower end of well lid is uncovered and have lateral wall all around, the uncovered department setting of lower extreme of lid in the base corresponds, the uncovered department setting in upper end of lid in the upper cover corresponds.

4. The dustproof and silent tact switch structure of the double-layer shell according to claim 1, 2 or 3, wherein: the inner shell is provided with an inner shell top wall and an inner shell peripheral side wall connected to the lower portion of the periphery of the inner shell top wall, and the lower portion of the inner shell peripheral side wall is combined with the inner bottom surface of the accommodating cavity to be positioned.

5. The dustproof and silent tact switch structure of the double-layer shell according to claim 3, wherein: the upper cover has downwardly extending's buckle arm, the protruding first stuck point that is equipped with in the outside of buckle arm, the protruding second stuck point that is equipped with of internal face of lateral wall all around of well lid, inside the buckle arm top-down card of upper cover goes into well lid, and the buckle arm inwards takes place to warp at the card in-process, and is spacing in the below of second stuck point until first stuck point, and at this moment, the outside elasticity of buckle arm resets.

6. The dustproof and silent tact switch structure of the double-layer shell according to claim 5, wherein: the lower extreme of first stuck point is provided with first guide surface, the upper end of second stuck point is provided with first guide surface, first stuck point is inside along second guide surface extrusion card income well lid through first guide surface.

7. The dustproof and silent tact switch structure of the double-layer shell according to claim 1, wherein: the lower end of the touch switch pressing piece is provided with an elastic rubber piece, and the elastic rubber piece presses the touch elastic piece.

8. The dustproof and silent tact switch structure of the double-layer shell according to claim 1 or 7, wherein: the light-touch elastic sheet is an upwardly arched snap sheet, and the light-touch switch pressing piece is deformed downwards from an upper arch shape after pressing the light-touch elastic sheet to conduct the first closed end and the second closed end.