CN110828203A - Stroke adjustment cover for dome-type microswitch - Google Patents

Abstract

The stroke regulating cover for spring plate type microswitch includes one cover connected to the microswitch, one stroke regulating part inside the cover, and one elastic part for providing the stroke regulating part with one reciprocating stroke perpendicular to the touch stroke of the microswitch.

Description

Stroke adjustment cover for dome-type microswitch

technical field

The invention relates to a stroke adjustment cover applied to a dome-type micro switch, in particular to a dome-type micro switch which can trigger the output of a switch command signal through a very short displacement stroke of mechanical operation.

Background technique

Micro Switch is widely used in small electronic devices. It is an adjacent contact control element used to turn on or off a circuit, which can realize the breaking or protection function of electronic equipment. The application of micro-switches is the most common. For related patents, please refer to TW I449069B, TW I449070B, TW I315535B, US7538291B and other patents. The elastic sheet-type switching element inside the switch body, wherein the elastic sheet-type switching element can trigger at least one switch command signal by a triggering stroke generated by the displacement change of the triggering member.

Since the applied electronic devices require different pressing strokes, please refer to FIG. 1 , which is a schematic diagram of a conventional microswitch that can control the triggering stroke. As shown in the figure, a microswitch 30 is provided with a microswitch at one end of a trigger member 31 . The metal crimping piece 32 extending at an oblique angle uses the distance between the crimping piece 32 and the triggering piece 31 to achieve a touch stroke, but the crimping piece 32 is fixed on the micro switch 30 by using A fixed section is a fulcrum, and a reciprocating stroke is generated by the metal flexibility of the crimping member 32 itself. The touch stroke cannot be precisely controlled in manufacturing, and the metal elasticity of the crimping member 32 is prone to fatigue under long-term use. In addition, the height of the extension end of the crimping member 32 is too high, and the adjustment of the actuating stroke is often limited due to the problem of component installation interference due to the miniaturization of current electronic devices.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to solve the problem that the conventional shrapnel-type microswitch cannot achieve an effective adjustable stroke.

In order to achieve the above object, the present invention provides a stroke adjustment cover applied to a dome-type micro switch, the stroke adjustment cover includes a cover connected to a micro switch, a stroke adjustment member disposed in the cover, An elastic member for providing the stroke adjusting member and a reciprocating stroke perpendicular to a touch stroke direction of the micro switch, an adjustment section of the stroke adjusting member has a reciprocating stroke provided by the elastic member The braking part used to brake the micro switch to generate the touch stroke in the stroke, to constitute the present invention does not need to change the touch stroke and structural design of the micro switch, but has a different reciprocating stroke and is easy to install. The stroke adjustment cover prolongs the triggering time of a switch command signal of the micro switch.

Specifically, the stroke adjustment cover applied to the dome-type micro switch includes a dome-type micro switch, and the dome-type micro switch includes a switch body, a triggering member disposed on the switch body, a The internal dome-type switching component of the switch body, the dome-type switching component can trigger at least one switch command signal by a touch stroke generated by the displacement change of the trigger; the stroke applied to the dome-type microswitch The adjustment cover also includes a stroke adjustment cover, the stroke adjustment cover includes a cover body corresponding to the switch body and provided with at least one connecting component, a stroke adjustment member disposed inside the cover body, and a stroke adjustment member disposed in the switch body. An elastic member inside the cover body, the elastic member is used to provide a reciprocating stroke perpendicular to the triggering stroke direction for the stroke adjusting member, and the cover body is provided with at least one displacement direction relative to the triggering member A first opening in the same direction and at least one second opening adjacent to the first opening and in a direction perpendicular to the displacement direction of the actuating member, and the stroke adjusting member includes a second opening passing through the second opening and A pressing section exposed outside the cover body and an adjustment section located at the position of the first opening inside the cover body and connected to the elastic member, the adjustment section at least has a braking portion, In the reciprocating stroke provided by the stroke adjusting member through the elastic member, the braking portion can be used for braking the displacement of the trigger member to generate the trigger stroke.

Specifically, the dome-type switching assembly includes a guide member that is braked by the trigger member, a first conductive pin, a second conductive pin, and a third conductive pin connected to the guide member. Pins, the conductive parts correspond to the touch strokes of the touch parts and have a normal position that conducts the first conductive pin and the third conductive pin and a conductive pin that conducts the first conductive pin The pin and the second conductive pin enable the switch component to generate a trigger position for outputting the switch command signal.

Specifically, the connecting member includes a first assembly portion located at the position of the four end points of the switch body and a corresponding second assembly portion located at the position of the four end points of the cover body.

Specifically, the area of the first opening is equal to or smaller than the area of the top surface area of the switch body.

Specifically, the adjustment section is provided with at least one displacement portion that assists the reciprocating stroke, and the cover body is correspondingly provided with at least one limiting portion that assists the reciprocating stroke.

Specifically, the adjustment section further includes a support portion extending to connect with a partial section of the elastic member.

Specifically, the braking portion forms a guiding inclined surface for the adjusting section capable of braking the triggering member.

Through the aforesaid disclosure of the present invention, it has the following characteristics compared to conventional use:

The stroke adjustment cover of the present invention adopts an external connection to connect the spring-type micro-switches, and the existing spring-type micro-switches can be produced in a modularized manner without additional design changes.

Compared with the conventional metal crimping piece for stroke adjustment, the stroke adjustment cover of the present invention requires less assembly space, and the stroke adjustment cover has a cover body assembled to the spring-type microswitch, which effectively reduces the impact on the interior of the application electronic device. The degree of part interference.

The stroke adjustment cover of the present invention can adjust the trigger stroke of the spring-type microswitch by the design of the braking portion on the adjustment section of the stroke adjustment member and the length of the reciprocating stroke of the elastic member, which is more precise than the conventional design. And more adjustable margin.

Description of drawings

FIG. 1 is a schematic diagram of a conventional microswitch capable of controlling the actuating stroke.

FIG. 2 is an exploded schematic diagram of an embodiment of the present invention.

3 is an exploded schematic diagram of a stroke adjustment cover according to an embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of an embodiment of the present invention in an original state.

FIG. 5 is a schematic cross-sectional view of an embodiment of the present invention in a triggered state.

Detailed ways

Referring to FIGS. 2 to 4 , the present invention provides a stroke adjustment cover 20 applied to a dome-type micro switch 10 . The dome-type micro switch 10 includes a switch body 11 , a switch body 11 disposed on the switch body 11 . The trigger 12 and a spring-type switching component disposed inside the switch body 11 , the spring-type switching component can trigger at least one switch command signal by a touch stroke generated by the displacement change of the trigger 12 , and the spring-type switching component It includes a conductive member 13 that is braked by the touch member 12 , a first conductive pin 14 connected to the conductive member 13 , a second conductive pin 15 and a third conductive pin 16 . The contact piece 13 corresponds to the touch stroke of the touch piece 12 and has a normal position for connecting the first conductive pin 14 and the third conductive pin 16 and a connection for the first conductive pin 14 and the third conductive pin 16 . The two conductive pins 15 enable the switch element to generate the trigger position of the switch command signal output. The operation mode of the spring-type switching element based on the spring-type microswitch 10 has been widely used in the prior art. The stroke adjustment cover 20 of the present invention is widely used. All of them can be applied to the dome-type microswitch 10 of the same technology and are not limited by the drawings of the present invention.

On top of that, a stroke adjustment cover 20 of the present invention includes a cover body 21 that roughly matches the size and shape of the switch body 11 and is correspondingly provided with at least one connecting member, a stroke adjustment member 22 disposed in the cover body 21 , and a cover body 21 . An elastic member 23 disposed in the cover body 21, the elastic member 23 is used to provide a reciprocating stroke perpendicular to the direction of the actuating stroke for the stroke adjusting member 22, the cover body 21 is provided with at least a first opening 211 and At least one second opening 212, wherein the area of the first opening 211 is equal to or smaller than the area of the top surface area of the switch body 11 and is in the same direction as the displacement direction of the trigger 12, the second opening 212 is adjacent to the first opening 211 The displacement direction of the actuating member 12 is relatively perpendicular to the displacement direction, and the stroke adjusting member 22 includes a pressing section 221 which is penetrated through the second opening 212 and has a pressing section 221 exposed outside the cover body 21 and a pressure section 221 located on the cover body 21 . The position of the first opening 211 in the inner part is connected to the adjustment section 222 of the elastic member 23. The adjustment section 222 at least has a braking portion 223. During the reciprocating stroke provided by the stroke adjustment member 22 through the elastic member 23, The braking portion 223 can be used for braking the displacement of the triggering member 12 to generate the triggering stroke.

Please refer to FIG. 2 to FIG. 4 again, the cover body 21 of the stroke adjustment cover 20 can be assembled by using the connecting member for the convenience of installation. A first assembling portion 111 and a second assembling portion 214 correspondingly disposed at the four end points of the cover body 21 are in the original state in which the cover body 21 and the switch body 11 are assembled together. , the triggering member 12 will be relatively positioned below the adjustment section 222 of the stroke adjustment member 22 , and the triggering member 12 can selectively abut against the adjustment section 222 or the adjustment section 222 according to the preset adjustment stroke length. The segment 222 is kept at a certain distance, and the braking portion 223 is a guiding inclined surface formed on the adjusting segment 222 and capable of braking the trigger 12. Because the trigger 12 has different shapes of a circle or a square, the guide The lead slope can be designed as a straight slope or a curved slope, and in the original state of FIG. 4 , the distance between the braking portion 223 and the trigger 12 can be increased or decreased in proportion to different preset stroke adjustments. , In addition, the adjusting section 222 is provided with at least one displacement portion 224 assisting the reciprocating stroke, the cover body 21 is correspondingly provided with at least one restricting portion 213 assisting the reciprocating stroke, and the adjusting section 222 also includes an extension The supporting portion 225 connecting a part of the elastic member 23, the above-mentioned restricting portion 213 and the supporting portion 225 can not only assist the adjusting member 22 to move more smoothly during the reciprocating stroke using the elastic member 23, but also have Restricting the stroke adjustment member 22 from exceeding the maximum displacement range of the reciprocating stroke can effectively reduce the damage of the micro switch 10 or the state that the stroke adjustment member 22 cannot be restored.

Please refer to FIG. 2 to FIG. 5 . FIG. 5 is a schematic cross-sectional view of an embodiment of the present invention in a triggered state. When the present invention is triggered by an external force from the original state of FIG. The pressing section 221 is stressed and linked with the adjusting section 222 to compress the elastic member 23 to store a restoring elastic force and start to generate the reciprocating stroke. The braking portion 223 of 222 presses against the trigger member 12 of the dome-type micro switch 10, so that the trigger member 12 is converted into a vertical downward relative to the displacement direction of the stroke adjustment member 22 to touch the guide member of the switch assembly. 13 and start a touch stroke, so that the contact piece 13 corresponding to the touch stroke of the touch piece 12 is connected to a normal position of the first conductive pin 14 and the third conductive pin 16 from the original state of FIG. 4 It is switched to turn on the first conductive pin 14 and the second conductive pin 15 so that the switch element generates a trigger position for outputting the switch command signal.

On the other hand, when the external force is removed, the dome-type micro switch 10 utilizes the flexible change of the guide member 13 to return to the normal position and pushes the trigger member 12 to return to the original position, and the stroke adjustment member 22 is adjusted by the aforementioned The restoring elastic force stored by the elastic member 23 pushes the stroke adjusting member 22 back to the original position shown in FIG. 4 to complete the reciprocating stroke.

To sum up the above, the stroke adjustment member 22 of the present invention can be easily assembled and disassembled with the dome-type microswitch 10 through the design of the cover 21 , and the stroke adjustment range can be determined by the relative relationship between the braking portion 223 and the trigger member 12 . The distance, the design of the braking portion 223 corresponding to the shape of the trigger member 12, etc., increase a larger stroke adjustment range, and the stroke adjustment member 22 and the elastic member 23 are provided with the cover 21 to protect and reduce other in the electronic device. Parts interfere with assembly. More importantly, the dome-type microswitch 10 used in the present invention does not need to change the design, and can be applied to different stroke adjustment needs. The stroke adjustment cover 20 can be installed to effectively expand the stroke adjustment range. .

Schematic Symbol Description

10...............shrapnel type micro switch

11..........Switch body

111............The first group of connections

12............Trigger

13............leader

14............First conductive pin

15............Second conductive pin

16..........The third conductive pin

20..........Stroke adjustment cover

21..........Housing

211............First opening

212..........Second Opening

213 ................. Department of Restrictions

214..........Second group connection

22..........Stroke adjuster

221..........Pressing segment

222..........Adjustment segment

223..........Brake part

224............Displacement part

225..........Support Department

23............Elastic Parts

30..........Micro switch

31..........Trigger

32............Crimp

Claims (7)

1. The utility model provides a be applied to shell fragment formula micro-gap switch's stroke adjustment cover which characterized in that:

the elastic sheet type microswitch comprises a switch body, a touch piece arranged on the switch body and an elastic sheet type switching assembly arranged in the switch body, wherein the elastic sheet type switching assembly can trigger at least one switch instruction signal by a touch stroke generated by the displacement change of the touch piece;

a stroke adjusting cover, the stroke adjusting cover includes a cover body corresponding to the switch body and provided with at least a connecting component, a stroke adjusting component arranged inside the cover body and an elastic component arranged inside the cover body, the elastic component is used for providing a reciprocating stroke perpendicular to the direction of the touch stroke for the stroke adjusting component, the cover body is provided with at least a first opening in the same direction as the displacement direction of the touch component and at least a second opening which is adjacent to the first opening and is in the direction perpendicular to the displacement direction of the touch component, the stroke adjusting component includes a pressing section which is arranged in the second opening in a penetrating way and exposed outside the cover body and an adjusting section which is arranged in the position of the first opening inside the cover body and connected with the elastic component, the adjusting section at least has a braking part, in the reciprocating stroke provided by the stroke adjusting piece through the elastic piece, the braking part can be used for braking the touch piece to generate displacement so as to generate the touch stroke.

2. The stroke adjustment cover of claim 1, wherein the flip-chip switch assembly comprises a conductive member braked by the touch member, a first conductive pin, a second conductive pin and a third conductive pin connected to the conductive member, the conductive member corresponding to the touch stroke of the touch member and having a normal position for connecting the first conductive pin and the third conductive pin and a trigger position for connecting the first conductive pin and the second conductive pin to enable the switch assembly to generate the switch command signal output.

3. The stroke adjustment cover applied to the spring plate type microswitch as in claim 1, wherein the connecting part comprises a first assembling part at the position of four end points of the switch body and a corresponding second assembling part at the position of four end points of the cover body.

4. The stroke adjustment cover applied to the leaf spring type microswitch according to claim 1, wherein the area of the first opening is equal to or smaller than the area of the top surface area of the switch body.

5. The stroke adjustment cover applied to the spring plate type microswitch as in claim 1, wherein the adjustment section is provided with at least one displacement part for assisting the reciprocating stroke, and the cover body is correspondingly provided with at least one limiting part for assisting the reciprocating stroke.

6. The stroke adjustment cover for a leaf spring type microswitch as in claim 1, wherein the adjustment section further comprises a support portion extending to connect a partial section of the elastic member.

7. The cover of claim 1, wherein the stop portion forms a guiding slope for the adjustment section to stop the triggering member.

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