TWI662571B - Stroke adjustment cover for shrapnel type micro switch - Google Patents

Abstract

A stroke adjustment cover applied to a spring-type micro switch. The stroke adjustment cover includes a cover body connected to a micro switch, a stroke adjustment member provided in the cover body, a stroke adjustment member for providing the stroke adjustment member, and a An elastic member of a reciprocating stroke that is perpendicular to a direction of a stroke of the micro-switch, and an adjustment section of the stroke adjusting member is provided with a reciprocating stroke provided by the elastic member for braking the micro-switch to generate the touch. The brake part of the stroke constitutes the present invention without changing the touch stroke and structural design of the micro switch, and is triggered by a switch instruction signal of the micro switch with a stroke adjustment cover having a different reciprocating stroke and easy to install. time.

Description

Stroke adjustment cover for shrapnel type micro switch

The invention relates to a stroke adjustment cover applied to a spring-type micro switch, in particular to a spring-type micro switch that can be used to output a switch command signal by mechanically operating a short displacement stroke.

The micro switch is widely used in small electronic devices. It is an adjacent contact control element for turning on or off the circuit. It can realize the breaking or protection function of electronic equipment. The micro switch is most commonly used. For related patents, please refer to TW I449069B, TW I449070B, TW I315535B, US 7538291B and other patents. The micro switch usually includes a switch body, a trigger member provided on the switch body, and a A shrapnel-type switching component that is internal to the switch body and generates a touch stroke to trigger at least one switch command signal by displacement of the touch member.

Since the applied electronic device requires different pressing strokes, please refer to FIG. 1, which is a schematic diagram of a micro switch that can control the touch stroke. As shown in the figure, a micro switch 30 is provided with an inclined angle at one end of a touch member 31. The extended metal crimping member 32 uses the distance between the crimping member 32 and the triggering member 31 to achieve a different trip. However, the crimping member 32 is fixed to a fixed section of the micro-switch 30. As a fulcrum, a reciprocating stroke is generated by the metal flexibility of the crimping member 32 itself. The triggering stroke cannot be precisely controlled in manufacturing, and it is easy to occur due to the fatigue of the metal elasticity of the crimping member 32 under long-term use. The trigger stroke error occurs. In addition, the excessive height of the extension end of the crimping member 32 is often limited due to the current miniaturization of electronic devices and the interference of component installation, which limits the margin of the trigger stroke.

The main purpose of the present invention is to solve the problem that the conventional shrapnel type micro switch cannot achieve an effectively adjustable stroke.

To achieve the above object, the present invention provides a stroke adjustment cover applied to a spring-type micro switch. The stroke adjustment cover includes a cover body connected to a micro switch, a stroke adjustment member provided in the cover body, and a Provide the stroke adjusting member and an elastic member with a reciprocating stroke perpendicular to a direction of a touch stroke of the micro-switch. An adjustment section through the stroke adjusting member is provided with a reciprocating stroke provided by the elastic member. The brake part that brakes the micro switch to generate the touch stroke constitutes the present invention. It is not necessary to change the touch stroke and structural design of the micro switch. Instead, the stroke adjustment cover with a different reciprocating stroke can be easily installed to extend the micro movement. A switch command signal trigger time of the switch. Through the foregoing disclosure of the present invention, it has the following characteristics compared with conventional use:

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

The stroke adjustment cover of the present invention requires less assembly space than the conventional metal crimping piece for stroke adjustment, and the stroke adjustment cover has a cover body assembled to the spring-type micro-switch, which effectively reduces the internal parts of the applied electronic device. Interference.

The stroke adjustment cover of the present invention can determine the adjustable stroke of the spring-type micro switch by adjusting 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. With adjustable margin.

Please refer to FIG. 2 to FIG. 4. The present invention provides a stroke adjustment cover 20 applied to a spring-type micro switch 10. The spring-type micro switch 10 includes a switch body 11 and a trigger 12 disposed on the switch body 11. A shrapnel type switching component which is disposed inside the switch body 11 and is displaced by the trigger 12 to generate a touch stroke to trigger at least one switch command signal. The shrapnel type switching component includes a guide 13 which is braked by the trigger 12. A first conductive pin 14, a second conductive pin 15 and a third conductive pin 16 which are connected to the conductive member 13. The conductive member 13 has a conduction corresponding to the touch stroke of the touch member 12. Normal position of the first conductive pin 14 and the third conductive pin 16 and a trigger position where the first conductive pin 14 and the second conductive pin 15 are turned on so that the switching component generates the switching instruction signal output The operation method of the spring-type micro switch 10 based on the spring-type micro switch 10 has been widely used. The stroke adjustment cover 20 of the present invention can be applied to the spring-type micro switch 10 of the same technology without being illustrated by the present invention. All System.

According to the above description, a stroke adjustment cover 20 of the present invention includes a cover body 21 that substantially matches the size and shape of the switch body 11 and correspondingly has at least one connecting member, a stroke adjustment member 22 disposed in the cover body 21, and An elastic member 23 provided in the cover body 21 to provide the stroke adjustment member 22 with a reciprocating stroke perpendicular to the direction of the touch stroke. The cover body 21 is provided with at least one of the same or smaller than the switch body 11. A first opening 211 in the top surface area and isotropic with the displacement direction of the trigger 12 and at least a second opening 212 adjacent to the first opening 211 and relatively perpendicular to the displacement direction of the trigger 12, and the stroke The adjusting member 22 includes a pressing section 221 passing through the second opening 212 and exposed outside the cover 21 and an adjusting section 222 located at the position of the first opening 211 in the cover 21 and connected to the elastic member 23, The adjusting section 222 is provided with at least a braking portion 223 for braking the displacement of the trigger member 12 to generate the trigger stroke during the reciprocating stroke provided by the stroke adjusting member 22 and the elastic member 23.

Please refer to FIG. 2 to FIG. 4 again. The cover body 21 of the stroke adjustment cover 20 is provided with a first group corresponding to the four end positions of the switch body 11 and the cover body 21 for the convenience of installation. The connection portion 111 and a second group connection portion 214 are assembled. In the original state where the cover body 21 and the switch body 11 are assembled, the trigger member 12 will be relatively positioned at the adjustment section 222 of the stroke adjustment member 22. In the lower position, according to the preset adjustment stroke length, the trigger 12 can selectively abut the adjustment section 222 or maintain a certain distance from the adjustment section 222, and the braking portion 223 forms a brake for the adjustment section 222. A guide inclined surface of the triggering member 12 is designed to have a straight or curved slope due to different shapes of the circular or square shape of the triggering member 12, and the braking portion 223 is located in the original state of FIG. 4. The distance from the bottom to the trigger 12 can be increased or decreased in proportion to different preset stroke adjustments. In addition, the adjustment section 222 and the cover 21 are provided with at least one displacement portion 224 and a limit to assist the reciprocating stroke. 213, and more in this adjustment section 222 An extension connection part of the support part 225 of the elastic member 23, in addition to the above-mentioned restriction portion 213 and support part 225, can assist the adjustment member 22 to more smoothly displace during the reciprocating stroke using the elastic member 23, and it is also useful In order to limit the stroke adjustment member 22 from exceeding the maximum range of the reciprocating stroke displacement, the state that the micro switch 10 is damaged or the stroke adjustment member 22 cannot be restored is effectively reduced.

Please refer to FIG. 2 to FIG. 5, which are schematic cross-sectional views of an embodiment of the present invention in a triggered state. When the present invention triggers the spring-loaded micro switch 10 by an external force from the original state of FIG. Forced and in conjunction with the adjustment section 222 to compress the elastic member 23 to reserve a returning elastic force and start the reciprocating stroke, at this time, the stroke adjustment member 22 is displaced in the direction of the elastic member 23, so that the braking portion of the adjustment section 222 223 crimping the touch piece 12 of the spring-type micro switch 10, so that the touch piece 12 is converted into a direction perpendicular to the displacement adjustment member 22, and the guide piece 13 of the switching component is touched downward to start a A touch stroke, so that the contact stroke of the guide member 13 corresponding to the touch member 12 is switched from a normal position where the first conductive pin 14 and the third conductive pin 16 are turned on to the first conductive pin in the original state of FIG. 4. The conductive pin 14 and the second conductive pin 15 cause the switching component to generate the trigger position of the switch command signal output.

When the external force is eliminated, the spring-type micro switch 10 returns to the normal position while using the flexible change of the guide member 13 to return to the original position, and the stroke adjustment member 22 passes the aforementioned The returning 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 stroke adjustment member 22 of the present invention can be easily assembled and disassembled with the shrapnel micro switch 10 through the cover 21 design, and the stroke adjustment range can be determined through the relative distance between the braking portion 223 and the trigger member 12 and the brake. The part 223 corresponds to the design of the shape of the trigger 12 to 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 the interference assembly of other parts in the electronic device. It is important that the spring-loaded micro switch 10 to which the present invention is applied does not need to be changed in design, and the stroke adjustment cover 20 can be installed according to different stroke adjustment requirements to effectively expand the stroke adjustment range.

The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention. When the scope of implementation of the present invention cannot be limited by this, that is, all equality made according to the scope of patent application Changes and modifications should still be covered by the patent of the present invention.

10‧‧‧ Shrapnel Micro Switch

11‧‧‧Switch body

111‧‧‧The first group connection department

12‧‧‧ Trigger

13‧‧‧ Guide

14‧‧‧ the first conductive pin

15‧‧‧Second conductive pin

16‧‧‧ the third conductive pin

20‧‧‧Stroke adjustment cover

21‧‧‧ cover

211‧‧‧First opening

212‧‧‧Second Opening

213‧‧‧Restricted Department

214‧‧‧The second group connection department

22‧‧‧Stroke adjustment

221‧‧‧Pressing section

222‧‧‧Adjustment

223‧‧‧Brake Department

224‧‧‧Displacement

225‧‧‧ support

23‧‧‧Elastic piece

30‧‧‧Micro Switch

31‧‧‧Toucher

32‧‧‧Crimping parts

FIG. 1 is a schematic diagram of a conventional micro switch capable of controlling a touch stroke. FIG. 2 is an exploded view of an embodiment of the present invention. FIG. 3 is an exploded view of a stroke adjusting 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.

Claims (7)

A stroke adjustment cover applied to a shrapnel type micro switch includes: a shrapnel type micro switch, comprising a switch body, a trigger member provided on the switch body, and a switch body disposed inside the switch body and displaced by the trigger member A shrapnel switching assembly that generates a touch stroke to trigger at least one switch instruction signal; a stroke adjustment cover, the stroke adjustment cover includes a cover body corresponding to the switch body with at least one connecting member, and a stroke disposed in the cover body An adjusting member and an elastic member provided in the cover body to provide the stroke adjusting member with a reciprocating stroke perpendicular to the direction of the touch stroke, the cover body is provided with at least one first An opening and at least a second opening adjacent to the first opening and relatively perpendicular to the displacement direction of the touch member, and the stroke adjusting member includes a pressing section penetrating the second opening and exposed outside the cover body, and a An adjustment section located at the first opening position in the cover and connected to the elastic member, the adjustment section is provided with at least one The braking portion provided in the reciprocating stroke for braking the displacement of the trigger member to generate the trigger stroke. The stroke adjustment cover applied to the spring-type micro switch as described in claim 1, wherein the spring-type switching component includes a guide member braked by the trigger, a first conductive pin connected to the guide, A second conductive pin and a third conductive pin, and the conductive member has a normal position for conducting the first conductive pin and the third conductive pin corresponding to the touch stroke of the contact member, and a conductive position for the first conductive pin The conductive pin and the second conductive pin cause the switching component to generate a trigger position of the switch instruction signal output. The stroke adjusting cover applied to the spring-type micro switch as described in claim 1, wherein the connection member is provided with a first group connection portion and a second group connection portion corresponding to the four end positions of the switch body and the cover body. . The stroke adjusting cover applied to the spring-type micro switch as described in claim 1, wherein the first opening is equal to or smaller than a top surface area of the switch body. As described in claim 1, the stroke adjustment cover applied to the shrapnel type micro switch, wherein the adjustment section is provided with at least one displacement portion and a restriction portion corresponding to the cover body to assist the reciprocating stroke. As described in claim 1, the stroke adjustment cover applied to the spring-type micro switch, wherein the adjustment section further includes a support portion extending the elastic member section of the connection portion. As described in claim 1, the stroke adjusting cover applied to the spring-type micro switch, wherein the braking portion forms a guide inclined surface for the adjusting section to stop the trigger.