CN216698160U

CN216698160U - Key switch capable of switching between mute and sound

Info

Publication number: CN216698160U
Application number: CN202123021134.6U
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 key switch capable of switching between mute and sound, which comprises an insulating base and first to fourth closed ends of a plurality of terminals, wherein the first closed end and the second closed end are positioned in a first switch area, and the third closed end and the fourth closed end are positioned in a second switch area; the first switch area is provided with a micro-motion switching elastic sheet, one end of the micro-motion switching elastic sheet is in constant contact with the first closed end, the micro-motion switching elastic sheet is provided with a cantilever extending towards the other end, and the free end of the cantilever is arranged above the second closed end in an interval manner; the second switch area is provided with a metal dome elastic sheet, the periphery of the metal dome elastic sheet is constantly contacted with the third closed end, and the middle upper arch part of the metal dome elastic sheet is positioned above the fourth closed end in a spacing manner; therefore, better pressing operation hand feeling and ideal switching sensitivity can be obtained in the sound mode, and the mute requirement can be better met by utilizing the touch switch in the mute mode, so that the mute in the true sense can be realized, and the user requirement can be better met.

Description

Key switch capable of switching between mute and sound

Technical Field

The utility model relates to the technical field of key switches, in particular to a key switch capable of switching between mute and sound.

Background

Taking a mouse button switch as an example, a user can select the operation experience of the sound and mute buttons according to the preference and the environmental requirements of the user. Later, a key switch capable of freely switching between sound and silence was developed, in which two tact switches are used to switch between silence and sound, and although the arching height of the upper arching portion of the snap dome of the tact switch is designed to be different, two operation modes of sound and silence can be realized, in the sound mode, the pressing switching feeling of the tact switch is not good and the operation is not reliable, and thus the requirements of customers cannot be met. Moreover, two dab the switch and design the terminal separately, just, the bottom of leading the core need stretch out the base bottom of casing, must occupy insulating base design space, leads to the terminal on the insulating base to arrange the position and need outwards squint slightly, leads to whole key switch's size great.

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 present invention provides a key switch capable of switching between mute mode and audible mode, which combines the design of micro-switch elastic sheet and metal dome elastic sheet to obtain better pressing operation feeling and ideal switching sensitivity in the audible mode, and can better satisfy the mute requirement by using the tact switch in the silent mode to implement mute in the true sense, thereby better satisfying the user requirement.

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

a key switch capable of switching between mute and sound comprises an insulating base and a plurality of terminals arranged on the insulating base at intervals, wherein the terminals are exposed at the top of the insulating base and provided with a first closed end, a second closed end, a third closed end and a fourth closed end at intervals, the first closed end and the second closed end are positioned in a first switch area at the top of the insulating base, and the third closed end and the fourth closed end are positioned in a second switch area at the top of the insulating base;

the first switch area is provided with a micro-motion switching elastic sheet, one end of the micro-motion switching elastic sheet is in constant contact with the first closed end, the micro-motion switching elastic sheet is provided with a cantilever extending towards the other end, and the free end of the cantilever is positioned above the second closed end in an interval manner;

the second switch area is provided with a metal dome elastic sheet, the periphery of the metal dome elastic sheet is in constant contact with the third closed end, and the middle upper arch part of the metal dome elastic sheet is positioned above the fourth closed end in a spacing manner;

the switching mechanism also comprises a shell, a switching button and a return spring for controlling the switching button to return upwards; the shell is assembled above the insulating base, and the switching button can selectively press a cantilever acting on the micro-switching elastic sheet or a middle upper arch part of the metal dome elastic sheet.

As a preferred scheme, the terminals are a first terminal, a second terminal and a third terminal;

the first terminal is provided with a first pin extending out of the insulating base, a first closed end and a fourth closed end, wherein the first closed end and the fourth closed end are convexly exposed at the upper side of the insulating base;

the second terminal is provided with a second pin extending out of the insulating base and a second closed end protruding out of the upper side of the insulating base, and the second pin and the second closed end are integrally connected;

the third terminal is provided with a third pin extending out of the insulating base and a third closed end protruding out of the upper side of the insulating base, and the third pin and the third closed end are integrally connected.

Preferably, the second closed end, the first closed end, the fourth closed end and the third closed end are arranged side by side at a certain interval in sequence.

Preferably, the third closed end and the fourth closed end are both terminal sections.

As a preferred scheme, the first terminal is further provided with a spring plate positioning end protruding out of the upper side of the insulating base, the first pin is integrally connected with the spring plate positioning end, and the second closed end, the spring plate positioning end, the first closed end, the fourth closed end and the third closed end are sequentially arranged side by side at intervals; the cantilever is provided with an auxiliary elastic sheet, the auxiliary elastic sheet extends towards one end of the micro-motion switching elastic sheet, and the extending tail end of the auxiliary elastic sheet is clamped on the elastic sheet positioning end.

As a preferred scheme, the switching button comprises a button body, the top of the button body is provided with an outer pressing part, the peripheral side of the button body is respectively provided with a first inner pressing part, a second inner pressing part, a shifting switching part and a switching positioning clamping point in an outward extending manner, and the first inner pressing part, the shifting switching part, the second inner pressing part and the switching positioning clamping point are sequentially arranged at intervals along the circumferential direction of the button body; the button body is located in an area above the first closed end.

As a preferred scheme, a positioning cover plate is installed in the shell above the corresponding insulating base, the positioning cover plate is provided with a guide pillar extending upwards, the lower end of the button body is provided with a vertical groove in an upwards concave manner, the guide pillar extends into the vertical groove, the periphery of the guide pillar is sleeved with a return spring, the upper end of the return spring abuts against the top end in the vertical groove, and the lower end of the return spring abuts against the positioning cover plate.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and particularly, according to the technical scheme, the microswitch is used as a sound mode and the tact switch is used as a mute mode mainly by combining the design of the micro-motion switching elastic sheet and the metal dome elastic sheet, so that the microswitch can be used for better pressing operation hand feeling and ideal switching sensitivity to obtain better pressing operation hand feeling and ideal switching sensitivity in the sound mode, and the tact switch can be used for better meeting the mute requirement in the mute mode to realize the mute in the real sense, thereby better meeting the user requirement.

Secondly, the arrangement of the first terminal, the second terminal and the third terminal on the insulating base and the combination of the cross section of the terminal as the contact surface of the elastic sheet reduce the bending process of the terminal, and meanwhile, the height of the terminal is well controlled, the product use performance is more stable, and the improvement of the use reliability of the key switch is facilitated; meanwhile, for a key switch product which can be switched to sound and silence, as the first closed end and the fourth closed end are integrally connected to the first terminal to form a COM terminal, the realization is easier by taking a terminal section as a conducting point, the space occupied by the first terminal on the insulating base is saved, and meanwhile, the first terminal is simpler to manufacture and has good manufacturing quality controllability; the switching button has reasonable structural design and does not occupy the space of the insulating base; therefore, the size of the whole key switch can be the same as that of a single micro switch using a mouse in a large batch in the market, and the existing structure of the mouse of the client does not need to be changed greatly.

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 an embodiment of the present invention;

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

FIG. 3 is a top view of an embodiment of the present invention (with the top cover not shown);

FIG. 4 is a cross-sectional view of an embodiment of the present invention;

fig. 5 is a perspective view of a switch button according to an embodiment of the present invention.

The attached drawings indicate the following:

a shell 20, a containing cavity 21, a micro-motion switching elastic sheet 22, a metal dome elastic sheet 23, a switching button 1, a return spring 24, a switching positioning elastic sheet 25, an elastic convex part 26, a positioning cover plate 27, a guide pillar 271, a toggle stroke groove 28, a switching stroke limiting surface 281, an insulating base 201, a middle cover 202, an upper cover 203, a first terminal 3, a second terminal 4, a third terminal 5, a first inner button 6 and a second inner button 7, the spring piece positioning device comprises a first closing end A, a second closing end B, a third closing end C, a fourth closing end D, a spring piece positioning end E, a cantilever 221, an auxiliary spring piece 222, a middle upper arch portion 231, a switching button 1, a button body 10, an outer pressing portion 11, a first inner pressing portion 12, a second inner pressing portion 13, a toggle switching portion 14, a switching positioning clamping point 15, a first horizontal portion 131, a first vertical portion 132, a second horizontal portion 141, a second vertical portion 142 and a spring mounting portion 16.

Detailed Description

Referring to fig. 1 to 5, specific structures of embodiments of the present invention are shown.

The utility model provides a changeable silence and vocal key switch, includes that insulating base 201 and interval set up a plurality of terminals on insulating base 201, a plurality of terminals expose in the top of insulating base 201 and are equipped with first closed end A, second closed end B, third closed end C and the fourth closed end D that the interval set up, first closed end A, second closed end B are located the first switch area at the top of insulating base 201, third closed end C, fourth closed end D are located the second switch area at the top of insulating base 201.

A micro-motion switching elastic sheet 22 is arranged in the first switch area, one end of the micro-motion switching elastic sheet 22 is constantly contacted with the first closed end A, the micro-motion switching elastic sheet 22 is provided with a cantilever 221 extending towards the other end, and the free end of the cantilever 221 is positioned above the second closed end B in a spaced manner;

a metal dome elastic sheet 23 is arranged in the second switch area, the periphery of the metal dome elastic sheet 23 is constantly contacted with the third closed end C, and an upper arch 231 in the middle of the metal dome elastic sheet 23 is arranged above the fourth closed end D in a spaced manner;

the switch comprises a shell 20, a switch button 1 and a return spring 24 for controlling the switch button 1 to return upwards; the housing 20 is assembled above the insulating base 201, and the switch button 1 can selectively press the cantilever 221 acting on the micro-switch spring plate 22 or the middle upper arch 231 of the snap dome 23.

The terminals are a first terminal 3, a second terminal 4 and a third terminal 5, and are fixed on the insulating base 201 through injection molding; the first terminal 3 is provided with a first pin extending out of the insulating base 201, a first closed end A and a fourth closed end D protruding out of the upper side of the insulating base 201, and the first pin is integrally connected with the first closed end A and the fourth closed end D; the second terminal 4 is provided with a second pin extending out of the insulating base 201 and a second closed end B protruding out of the upper side of the insulating base 201, and the second pin and the second closed end B are integrally connected; the third terminal 5 has a third pin extending out of the insulating base 201 and a third closed end C protruding out of the upper side of the insulating base 201, and the third pin and the third closed end C are integrally connected. The second closed end B, the first closed end A, the fourth closed end D and the third closed end C are sequentially arranged side by side at intervals. Preferably, the third closed end C and the fourth closed end D are both terminal sections (horizontal cross sections), and the cross sections of the terminals are used as contact surfaces of the elastic pieces, so that the bending process of the terminals is reduced, and meanwhile, the heights of the terminals are well controlled.

The first terminal 3 is further provided with a spring plate positioning end E which is exposed out of the upper side of the insulating base 201, the first pin is integrally connected with the spring plate positioning end E, and the second closed end B, the spring plate positioning end E, the first closed end A, the fourth closed end D and the third closed end C are sequentially arranged side by side at intervals; the cantilever 221 is provided with an auxiliary spring plate 222, and the auxiliary spring plate 222 extends toward one end of the inching switching spring plate 22 and the extending end thereof is clamped on the spring plate positioning end E.

The switching button 1 comprises a button body 10, the top of the button body 10 is provided with an outer pressing part 11, the circumferential sides of the button body 10 are respectively provided with a first inner pressing part 12, a second inner pressing part 13, a shifting switching part 14 and a switching positioning clamping point 15 in an outward extending mode, and the first inner pressing part 12, the shifting switching part 14, the second inner pressing part 13 and the switching positioning clamping point 15 are sequentially arranged at intervals along the circumferential direction of the button body 10. The button body 10 is located in the upper region of the first closed end a. The toggle switching part 14 and the switching positioning clamping point 15 are arranged on the opposite sides. The first inner pressing portion 12 and the second inner pressing portion 13 are offset from each other to be disposed on the non-facing side. The first inner pressing portion 12 and the second inner pressing portion 13 both have a first horizontal portion 131 extending horizontally outward from the peripheral side of the button body 10, and a first vertical portion 132 extending downward from the outer end of the first horizontal portion 131, and the included angle between the first horizontal portions 131 of the first inner pressing portion 12 and the second inner pressing portion 13 is an obtuse angle. The toggle switching portion 14 has a second horizontal portion 141 extending horizontally outward from the peripheral side of the button body 10, and a second vertical portion 142 extending upward from the outer end of the second horizontal portion 141, and the included angles between the second horizontal portion 141 and the first horizontal portions 131 of both the first inner pressing portion 12 and the second inner pressing portion 13 are acute angles. The lower end of the button body 10 is provided with a spring mounting portion 16 facing the outer pressing portion 11. Through the structural improvement to the switching button 1, the switching part 14 is shifted to switch around the button body 10, and the switching positioning clamping points 15 are used to position around the button body 10, so that the shifting stroke during switching is effectively reduced, and the switching part 14 is arranged around the button body 10, so that the switching button is easy to install and convenient to use and operate.

A positioning cover plate 27 is installed in the housing 20 corresponding to the upper portion of the insulating base 201, the positioning cover plate 27 has a guide post 271 extending upward, a vertical groove serving as the spring mounting portion 15 is formed in the lower end of the button body 10 in an upward concave manner, the guide post 271 extends into the vertical groove, the return spring 24 is sleeved on the periphery of the guide post 271, the upper end of the return spring 24 abuts against the top end of the vertical groove, and the lower end of the return spring 24 abuts against the positioning cover plate 27. The return spring 24 acts on the switching button 1 to enable the switching button 1 to automatically return upwards; the shell is internally provided with a switching positioning elastic sheet 25, the switching positioning elastic sheet 25 is provided with an elastic convex part 26, when the switching part 14 is toggled, the switching positioning clamping point 15 can be selectively limited to one side or the other side of the elastic convex part 26, and correspondingly, the first inner pressing part 12 and the second inner pressing part 13 are switched to be opposite to the corresponding micro-motion switching elastic sheet 22 and the metal dome elastic sheet 23. Preferably, the inching switching elastic sheet 22 and the snap dome elastic sheet 23 are respectively provided with a first inner button 6 and a second inner button 7, so that the first inner pressing portion 12 and the second inner pressing portion 13 can be correspondingly pressed against each other. Utilize the guide pillar 271 that forms on the location apron of installing in the inside holding chamber 21 of casing 20 as for pressing the axle core, the guide pillar 271 position is fixed relative to casing 20, do not receive the switching operation influence, be favorable to guaranteeing to press the stable accuracy in axle core position, the installation location to shift knob 1 becomes simpler, moreover, because press the axle core and need not occupy the base design position of casing 20, be favorable to each terminal on the base to arrange, also be favorable to dwindling whole key switch's size.

The outer pressing part 11 extends out of the top of the housing 20, and the toggle switch 14 extends out of the side of the housing 20. The casing 20 is provided with a horizontally extending toggle stroke slot 28, two switching stroke limiting surfaces 281 are respectively arranged on two end surfaces inside the toggle stroke slot 28, when the toggle switching part 14 is toggled to be close to one switching stroke limiting surface 281, the first inner pressing part 12 is just opposite to a corresponding micro-motion switching elastic sheet 22, when the toggle switching part 14 is toggled to be close to the other switching stroke limiting surface 281, the second inner pressing part 13 is just opposite to a corresponding metal dome elastic sheet 23.

In this embodiment, the housing 20 includes a middle cover 202 and an upper cover 203, the upper end and the lower end of the middle cover 202 are open, the lower end of the middle cover 202 is positioned by being buckled with the insulating base 201, and the upper end of the middle cover 202 is also positioned by being buckled with the lower end of the upper cover 203. A first terminal 3, a second terminal 4 and a third terminal 5 are fixed on the insulating base 201 by injection molding, the first terminal 3 is used as a common terminal, one end of a micro-motion switching elastic sheet 22 is normally conducted with the first terminal 3, the other end of the micro-motion switching elastic sheet 22 can be selectively conducted with/disconnected from the second terminal 4 by pressing the micro-motion switching elastic sheet 22, similarly, the periphery of a metal dome elastic sheet 23 is normally conducted with the first terminal 3, the middle upper arch 231 of the metal dome elastic sheet 23 can be selectively conducted with/disconnected from the third terminal 5 by pressing the metal dome elastic sheet 23, because the design of the inching switching elastic sheet 22 and the snap dome elastic sheet 23 is different, the pressing operation sounds generated by the inching switching elastic sheet and the snap dome elastic sheet are different, the switching between sound and silence can be achieved, the sound is larger than the silence, and ideally, the silence mode can achieve the effect of the silence on the hearing of the user.

The design of the utility model is characterized in that the design mainly combines the micro-motion switching elastic sheet and the metal dome elastic sheet, the micro-motion switch is used as a sound mode, and the tact switch is used as a mute mode, so that the better pressing operation hand feeling and the ideal switching sensitivity of the micro-motion switch can be utilized, the better pressing operation hand feeling and the ideal switching sensitivity can be obtained in the sound mode, and the tact switch can better meet the mute requirement in the mute mode, thereby realizing the mute in the real sense and better meeting the user requirement.

Secondly, the arrangement of the first terminal, the second terminal and the third terminal on the insulating base and the combination of the cross section of the terminal as the contact surface of the elastic sheet reduce the bending process of the terminal, and meanwhile, the height of the terminal is well controlled, the product use performance is more stable, and the improvement of the use reliability of the key switch is facilitated; meanwhile, for a key switch product which can switch between sound and silence, as the first closed end A and the fourth closed end are integrally connected to the first terminal to form a COM terminal, the realization is easier by taking a terminal section as a conducting point, the space occupied by the first terminal on the insulating base is saved, and meanwhile, the first terminal is simpler to manufacture and has good manufacturing quality controllability; the switching button has reasonable structural design and does not occupy the space of the insulating base; therefore, the size of the whole key switch can be the same as that of a single micro switch using a mouse in a large batch in the market, and the existing structure of the mouse of the client does not need to be changed greatly.

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. A switchable mute and audible push-button switch, characterized in that: the switch comprises an insulation base and a plurality of terminals arranged on the insulation base at intervals, wherein a first closed end, a second closed end, a third closed end and a fourth closed end which are arranged at intervals are exposed at the top of the insulation base of the plurality of terminals, the first closed end and the second closed end are positioned in a first switch area at the top of the insulation base, and the third closed end and the fourth closed end are positioned in a second switch area at the top of the insulation base;

2. The switchable mute and audible keyswitch of claim 1, wherein: the plurality of terminals are a first terminal, a second terminal and a third terminal;

the first terminal is provided with a first pin extending out of the insulating base, a first closed end and a fourth closed end, wherein the first closed end and the fourth closed end are protruded out of the upper side of the insulating base;

3. The switchable mute and audible keyswitch of claim 2, wherein: the second closed end, the first closed end, the fourth closed end and the third closed end are sequentially arranged side by side at intervals.

4. A switchable mute and audible push button switch according to claim 2 or 3, characterised in that: and the third closed end and the fourth closed end are both terminal tangent planes.

5. A switchable mute and audible push button switch according to claim 2 or 3, characterised in that: the first terminal is also provided with a spring plate positioning end which is convexly exposed on the upper side of the insulating base, the first pin is integrally connected with the spring plate positioning end, and the second closed end, the spring plate positioning end, the first closed end, the fourth closed end and the third closed end are sequentially arranged side by side at intervals; the cantilever is provided with an auxiliary elastic sheet, the auxiliary elastic sheet extends towards one end of the micro-motion switching elastic sheet, and the extending tail end of the auxiliary elastic sheet is clamped on the elastic sheet positioning end.

6. The switchable mute and audible keyswitch of claim 1, wherein: the switching button comprises a button body, the top of the button body is provided with an outer pressing part, the peripheral side of the button body is respectively provided with a first inner pressing part, a second inner pressing part, a shifting switching part and a switching positioning clamping point in an outward extending mode, and the first inner pressing part, the shifting switching part, the second inner pressing part and the switching positioning clamping point are sequentially arranged at intervals along the circumferential direction of the button body; the button body is located in an area above the first closed end.

7. The switchable mute and audible keyswitch of claim 6, wherein: the button comprises a shell, and is characterized in that a positioning cover plate is arranged in the shell and corresponds to the upper part of the insulating base, the positioning cover plate is provided with a guide pillar extending upwards, the lower end of the button body is provided with a vertical groove in an upwards concave mode, the guide pillar extends into the vertical groove, the periphery of the guide pillar is sleeved with a return spring, the upper end of the return spring supports against the top end of the vertical groove, and the lower end of the return spring supports against the positioning cover plate.