WO2022166786A1

WO2022166786A1 - Removable key switch

Info

Publication number: WO2022166786A1
Application number: PCT/CN2022/074472
Authority: WO
Inventors: 吴福喜; 肖奕江
Original assignee: 东莞市凯华电子有限公司
Priority date: 2021-02-05
Filing date: 2022-01-28
Publication date: 2022-08-11
Also published as: TWM632532U; CN114864320A

Abstract

Disclosed is a removable key switch, comprising a PCB and a switch body provided on the PCB. The switch body comprises a conduction assembly, the conduction assembly comprises a movable sheet and a static sheet, the movable sheet and the PCB are electrically connected to each other by means of a first elastic conductive body, and the static sheet and the PCB are electrically connected to each other by means of a second elastic conductive body; a first insertion hole allowing for insertion and removal of the lower end of the movable sheet is formed in the PCB, and a second insertion hole allowing for insertion and removal of the lower end of the static sheet is formed in the PCB. The removable key switch provided in the present invention has an electrical conduction switch function and also has repeated insertion and removal capability, and when the switch body is defective or damaged, the entire switch body can be directly removed for maintenance or replacement so that the maintenance or replacement is convenient and efficient; moreover, there is no need to additionally provide a connector, so that the overall size and the space occupied will not be increased, and the cost will not be increased.

Description

A plug-in key switch

technical field

The invention relates to the field of key switches, in particular to a plug-in key switch.

Background technique

The mechanical switches of the existing mechanical keyboards are directly welded on the PCB board, and the defects are very obvious: once the mechanical switches are defective or damaged, it is difficult to replace the mechanical switches and the maintenance cost is high. It wastes a long time, and there are hidden dangers of welding; in addition, this structural design also prevents end users from choosing different types of mechanical switches for different keys of the keyboard according to their own preferences.

In order to solve the problem of difficult replacement of mechanical switches, there are plug-in switches on the market. A connector is welded on the PCB board, and then the switch pins are inserted into the connector to realize the pluggable connection between the switch body and the PCB board. . However, this structural design requires an additional connector, which is bulky, occupies a large space, and has a high cost.

SUMMARY OF THE INVENTION

In view of the above deficiencies, the purpose of the present invention is to provide a plug-in key switch, which not only has the function of electrical conduction of the switch, but also has the ability to repeatedly plug and unplug. When the switch body is defective or damaged, the whole switch body can be directly pulled out. It is convenient and quick to repair or replace when it comes out to repair or replace; moreover, there is no need to add additional connectors, the overall volume and occupied space will not be increased, and the cost will not be increased.

The technical scheme that the present invention adopts to achieve the above purpose is:

A plug-in button switch, comprising a PCB board and a switch body disposed on the PCB board, the switch body includes a conduction component, the conduction component includes a moving piece and a static piece, characterized in that the moving piece The sheet and the PCB board are electrically connected through a first elastic conducting body, and the static sheet and the PCB board are electrically connected through a second elastic conducting body; a lower end plug of the driving sheet is provided on the PCB board A first plug-in hole for unplugging, and a second plug-in hole for plugging and unplugging the lower end of the static piece is opened on the PCB board.

As a further improvement of the present invention, a first electrical connection area and a second electrical connection area are provided on the PCB board, the first elastic conducting body is electrically connected to the first electrical connection area, and the second electrical connection area is electrically connected. The elastic conducting body is electrically connected with the second electrical connection area.

As a further improvement of the present invention, the first electrical connection area is one of a solder paste coating and a copper layer, and the second electrical connection area is one of a solder paste coating and a copper layer .

As a further improvement of the present invention, a first limiting groove on the periphery of the upper end of the first insertion hole and a second limiting groove on the periphery of the upper end of the second plugging hole are respectively formed on the PCB board ; the first electrical connection area is arranged in the first limiting groove, the second electrical connection area is arranged in the second limiting groove; the lower end of the first elastic conducting body is arranged in the first In the limiting groove, the lower end of the second elastic conducting body is arranged in the second limiting groove.

As a further improvement of the present invention, the first electrical connection area extends to the inner wall of the first plugging hole, and the second electrical connection area extends to the inner wall of the second plugging hole.

As a further improvement of the present invention, one of the moving plate and the PCB is connected to the first elastic conducting body, and one of the static plate and the PCB is connected to the second elastic body. The conducting body is connected in one body.

As a further improvement of the present invention, one of the moving plate and the PCB is welded to the first elastic conducting body, and one of the static plate and the PCB is integrated with the second elastic body. The conductors are welded together.

As a further improvement of the present invention, the first elastic conducting body and the second elastic conducting body are both springs.

As a further improvement of the present invention, the moving piece is mainly composed of a moving piece main body and a moving piece pin connected to the moving piece main body, the lower part of the moving piece pin is movably inserted into the first insertion hole, the first elastic conduction The body sleeve is arranged on the outer periphery of the upper part of the pin of the moving piece.

As a further improvement of the present invention, the static plate is mainly composed of a static plate main body and a static plate pin connected to the static plate main body, the lower part of the static plate pin is movably inserted into the second insertion hole, the second elastic guide The whole body is sleeved on the upper periphery of the pins of the static piece.

The beneficial effects of the present invention are:

(1) The electrical connection between the moving piece and the PCB board is realized by adding a first elastic conducting body, the electrical connection between the static piece and the PCB board is realized by adding a second elastic conducting body, and the first plugging and unplugging is added on the PCB board. The hole and the second plug-in hole are used for inserting and unplugging the lower end of the moving piece and the lower end of the static piece, respectively, so that the moving piece and the static piece have the function of switching electrical conduction, and also have the ability to repeatedly insert and pull out. When the main body of the switch is defective or damaged, the main body of the switch can be directly pulled out for repair or replacement, which is convenient and quick to repair and replace. At the same time, there is no need to add additional connectors, the overall volume and occupied space will not be increased, and the cost will not be increased.

(2) Since both the first elastic conductive body and the second elastic conductive body have elasticity, the first elastic conductive body just abuts between the moving piece and the first electrical connection area, and the second elastic conductive body It just abuts between the static piece and the second electrical connection area, which can not only ensure the electrical connection between the moving piece and the first electrical connection area, and between the static piece and the second electrical connection area, but also does not affect the The moving piece and the first electrical connection area, the static piece and the second electrical connection area exert excessive force, especially, the first electrical connection area and the second electrical connection area will not be resisted with excessive force, Therefore, while realizing the function of repeated insertion and removal, the conduction performance of the switch can also be guaranteed.

The above is an overview of the technical solutions of the invention. The invention will be further described below with reference to the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a sectional view of the present invention;

Fig. 2 is another sectional view of the present invention;

Fig. 3 is the structure schematic diagram that the moving piece and the static piece are arranged on the PCB board in the present invention;

4 is a schematic structural diagram of a PCB board in the present invention;

5 is an exploded view of the overall structure of the present invention;

6 is a schematic structural diagram of the conducting assembly and the guide core in an unpressed state of the present invention;

7 is a schematic structural diagram of the conduction assembly and the guide core in a pressed state according to the present invention;

8 is a schematic diagram of the overall external structure of the present invention;

FIG. 9 is a schematic diagram of the rear structure of the switch body disposed on the PCB in the present invention.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments.

Referring to FIGS. 1 to 3 , an embodiment of the present invention provides a plug-in button switch, which includes a PCB board 1 and a switch body 2 disposed on the PCB board 1 . The switch body 2 includes a conduction component 21 . The conduction component 21 includes a moving piece 211 and a static piece 212 , the moving piece 211 and the PCB board 1 are electrically connected through a first elastic conducting body 3 , and the static piece 212 and the PCB board 1 are electrically connected through a The second elastic conducting body 4 is electrically connected; the PCB board 1 is provided with a first plug-in hole 11 for inserting and removing the lower end of the actuating piece 211 , and the PCB board 1 is provided with a lower end of the static piece 212 for inserting and unplugging. a second plug-in hole 12.

The electrical connection between the moving piece 211 and the PCB board 1 is realized by using the first elastic conducting body 3 , the electrical connection between the static piece 212 and the PCB board 1 is realized by using the second elastic conducting body 4 , and the PCB board 1 is added. The first plug-in hole 11 and the second plug-in hole 12 are used for plugging and unplugging the lower end of the moving piece 211 and the lower end of the static piece 212, respectively, so that the moving piece 211 and the static piece 212 have the function of switching electrical conduction, and also It has the ability to repeatedly plug and unplug.

In this embodiment, a first electrical connection area 13 and a second electrical connection area 14 are disposed on the PCB board 1 , and the first elastic conductive body 3 is electrically connected to the first electrical connection area 13 , the second elastic conductive body 4 is electrically connected to the second electrical connection region 14 . For a specific electrical connection, it can be realized by direct contact or welding. Specifically, the first elastic conducting body 3 can directly contact the first electrical connecting region 13 or be welded on the first electrical connecting region 13; similarly, the second elastic conducting body 4 can directly contact the second electrical connecting region 13 The connection area 14 is soldered on the second electrical connection area 14 .

When the lower end of the moving piece 211 is inserted into the first insertion hole 11 , the first elastic conducting body 3 is electrically connected to the moving piece 211 and the first electrical connection area 13 respectively, so as to realize the connection between the moving piece 211 and the first electrical connection area 13 . electrical connection. Due to the elasticity of the first elastic conducting body 3 , the first elastic conducting body 3 just abuts between the moving piece 211 and the first electrical connection area 13 , which not only ensures the moving piece 211 and the first electrical connection area The electrical connection between 13 will not exert excessive force on the moving piece 211 and the first electrical connection area 13, especially the first electrical connection area 13 will not be resisted with excessive force. Therefore, While realizing the function of repeated plugging and unplugging, it can also ensure the conduction performance of the switch.

Similarly, when the lower end of the static sheet 212 is inserted into the second insertion hole 12 , the second elastic conductive body 4 is electrically connected to the static sheet 212 and the second electrical connection area 14 respectively to realize the static sheet 212 and the second electrical connection. Electrical connection to zone 14. Due to the elasticity of the second elastic conducting body 4 , the second elastic conducting body 4 just abuts between the static sheet 212 and the second electrical connection area 14 , which can ensure the static sheet 212 and the second electrical connection area 14 . The electrical connection between the static sheet 212 and the second electrical connection area 14 will not exert excessive force, especially, the second electrical connection area 14 will not be resisted with excessive force. Therefore, in the While realizing the function of repeated plugging and unplugging, it can also ensure the conduction performance of the switch.

In this embodiment, specifically, the first electrical connection region 13 is one of the solder paste coating and the copper layer, and the second electrical connection region 14 is the solder paste coating and the copper layer. one of them.

Regarding the arrangement of the first electrical connection area 13 and the second electrical connection area 14 , as shown in FIG. 4 , in this embodiment, a first electrical connection area is formed on the PCB 1 at the periphery of the upper end of the first insertion hole 11 respectively. A limiting groove 111 and a second limiting groove 121 located on the periphery of the upper end of the second insertion hole 12; the first electrical connection area 13 is disposed in the first limiting groove 111, the first The two electrical connection areas 14 are disposed in the second limiting groove 121 ; the lower end of the first elastic conducting body 3 is disposed in the first limiting groove 111 , and the lower end of the second elastic conducting body 4 is disposed in the first limiting groove 111 . Inside the second limiting groove 121 , as shown in FIG. 3 . Meanwhile, the first electrical connection area 13 extends to the inner wall of the first insertion hole 11 , and the second electrical connection area 14 extends to the inner wall of the second insertion hole 12 . By arranging the first electrical connection region 13 in the first limiting groove 111 and the second electrical connecting region 14 in the second limiting groove 121, both the first elastic conducting body 3 and the second limiting groove 121 can be realized. The electrical connection between an electrical connection area 13 and between the second elastic conductive body 4 and the second electrical connection area 14 can also be used for the connection between the lower end of the first elastic conductive body 3 and the second elastic conductive body. 4. The lower end is limited to prevent displacement.

In order to prevent the first elastic conductive body 3 and the second elastic conductive body 4 from being displaced or dropped when the switch body 2 is pulled out, in this embodiment, the first elastic conductive body 3 and the second elastic conductive body 4 are One end of the whole body 4 is fixed. Specifically, one of the moving piece 211 and the PCB board 1 is connected to the first elastic conducting body 3 as a whole. Preferably, one of the moving piece 211 and the PCB board 1 is connected to the first elastic conducting body 3 . An elastic conducting body 3 is welded into one body; one of the static piece 212 and the PCB board 1 is connected with the second elastic conducting body 4 , preferably, the static piece 212 and the PCB board 1 One of the two is welded to the second elastic conducting body 4 as a whole.

When the first elastic conducting body 3 is connected with the moving piece 211 as a whole, when the switch body 2 is pulled out from the PCB board 1, the first elastic conducting body 3 leaves the PCB board 1 along with it; When the body 3 is connected to the PCB board 1 as a whole, it can be welded with the first electrical connection area 13. When the switch body 2 is pulled out from the PCB board 1, the first elastic conductive body 3 remains on the PCB board 1. superior. Similarly, when the second elastic conducting body 4 is connected to the static piece 212 as a whole, when the switch body 2 is pulled out from the PCB board 1, the second elastic conducting body 4 leaves the PCB board 1; When the elastic conducting body 4 is connected with the PCB board 1 as a whole, it can be welded with the second electrical connection area 14. When the switch body 2 is pulled out from the PCB board 1, the second elastic conducting body 4 remains in the second electrical connection area 14. on PCB board 1.

In this way, by connecting the first elastic conducting body 3 to any one of the moving piece 211 and the PCB board 1 , the second elastic conducting body 4 is connected to both the static piece 212 and the PCB board 1 . On any one of the above, when the switch body 2 is pulled out, the first elastic conductive body 3 and the second elastic conductive body 4 will not be displaced or dropped.

In this embodiment, the first elastic conducting body 3 and the second elastic conducting body 4 are both springs, of course, they can also be elastic pieces. When the first elastic conducting body 3 and the second elastic conducting body 3 are springs, it is a patch spring. When the patch spring is connected to the circuit, it can be used as a patch and plug-in integrated key switch. When the patch spring is not connected It can be used as a plug-in key switch when wiring.

In this embodiment, as shown in FIGS. 1 to 3 , the moving piece 211 is mainly composed of a moving piece main body 2111 and a moving piece pin 2112 connected to the moving piece main body 2111 , and the lower part of the moving piece pin 2112 is movably inserted into the first moving piece In the insertion hole 11, the first elastic conducting body 3 (spring) is sleeved on the upper periphery of the moving piece pin 2112, then the first elastic conducting body 3 (spring) will inevitably contact with the moving piece body 2111 to realize the electrical connection. connect.

At the same time, the static plate 212 is mainly composed of a static plate main body 2121 and a static plate pin 2122 connected to the static plate main body 2121. The conducting body 4 (spring) is sleeved on the upper periphery of the pin 2122 of the static plate, so the second elastic conducting body 4 (spring) will inevitably contact with the main body 2121 of the static plate to realize electrical connection.

For the specific structure of the switch main body 2 in this embodiment, as shown in FIG. 5 and FIG. 8 , the switch main body 2 includes a base 10 , an upper cover 20 disposed on the base 10 , and an upper cover 20 disposed in the base 10 and the upper cover 20 . The guide core 30 , the return spring 40 disposed in the base 10 and sleeved on the lower end of the guide core 30 , the movable block 50 disposed on the side of the guide core 30 , the above-mentioned conducting component 21 , and the waterproof cover 60 . When the switch body 2 is not pressed, the pressing block 301 on the side of the guide core 30 pushes the moving piece body 2111 outward through the movable block 50, so that the moving contact 2113 on the moving piece 211 and the static piece 212 are in contact with each other. Point 2123 is separated, i.e. the switch is in the open state, as shown in Figure 6. When the guide core 30 is pressed down, under the action of the inclined surface of the pressing block 301 on the side of the guide core 30, the movable block 50 is moved to the inclined surface position, and the moving piece body 2111 is elastically reset, and finally the moving piece 2111 is reset. The movable contact 2113 on the sheet 211 is in contact with the static contact 2123 on the static sheet 212. At the same time, because the moving sheet 211 passes through the first elastic conductor 3 and the static sheet 212 directly conducts electricity through the second elastic conductor 4 If the switch is connected to the PCB board 1, the switch is in an on state, as shown in Figure 7. When the pressing on the guide core 30 is released, the guide core 30 is reset under the action of the elastic restoring force of the return spring 40 .

At the same time, as shown in FIG. 9 , at least one positioning post 101 is provided at the bottom of the base 10 , a positioning hole 15 is provided on the PCB board 1 for the positioning post 101 to be inserted, and the switch body 2 is installed on the PCB board 1 At the time, the positioning column 101 is inserted into the positioning hole 15 to realize the positioning of the switch body 2 on the PCB board 1 . When the switch body 2 is pulled out from the PCB board 1 , the positioning post 101 is pulled out from the positioning insertion hole 15 .

It should be noted here that the specific structure of the switch main body 2 is not limited to the above-mentioned description, nor is it limited to the structure shown in the accompanying drawings.

The above descriptions are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, other structures obtained by adopting the same or similar technical features as the above-mentioned embodiments of the present invention are all within the scope of the present invention. within the scope of protection.

Claims

A plug-in button switch, comprising a PCB board and a switch body disposed on the PCB board, the switch body includes a conduction component, the conduction component includes a moving piece and a static piece, characterized in that the moving piece The sheet and the PCB board are electrically connected through a first elastic conducting body, and the static sheet and the PCB board are electrically connected through a second elastic conducting body; the PCB board is provided with a lower end plug of the driving sheet A first plug hole for unplugging, and a second plug hole for plugging and unplugging the lower end of the static piece is opened on the PCB board.
The plug-in button switch according to claim 1, wherein a first electrical connection area and a second electrical connection area are provided on the PCB board, and the first elastic conducting body is connected to the first electrical connection area. The electrical connection area is electrically connected, and the second elastic conducting body is electrically connected with the second electrical connection area.
The plug-in key switch according to claim 2, wherein the first electrical connection area is one of a solder paste coating and a copper layer, and the second electrical connection area is a solder paste coating One of the layer and the copper layer.
The plug-in key switch according to claim 2, wherein a first limiting groove located on the periphery of the upper end of the first plug-in hole and a first limit groove located at the upper end of the second plug-in hole are respectively formed on the PCB board. a second limit groove on the periphery; the first electrical connection area is set in the first limit groove, the second electrical connection area is set in the second limit groove; the first The lower end of the elastic conducting body is arranged in the first limiting groove, and the lower end of the second elastic conducting body is arranged in the second limiting groove.
The plug-in key switch according to claim 4, wherein the first electrical connection area extends to the inner wall of the first plug-in hole, and the second electrical connection area extends to the inner wall of the second plug-in hole superior.
The plug-in key switch according to claim 1, wherein one of the moving plate and the PCB is connected to the first elastic conducting body, and the static plate and the PCB are both integrated. One of them is integrally connected with the second elastic conducting body.
The plug-in button switch according to claim 6, wherein one of the moving plate and the PCB board is welded with the first elastic conducting body, and the static plate and the PCB board are both welded together. One of them is welded with the second elastic conducting body.
The plug-in key switch according to any one of claims 1 to 7, wherein the first elastic conducting body and the second elastic conducting body are both springs.
The plug-in button switch according to claim 8, wherein the moving piece is mainly composed of a moving piece main body and a moving piece pin connected to the moving piece main body, and the lower part of the moving piece pin is movably inserted into the first plugging hole Inside, the first elastic conducting body is sleeved on the upper periphery of the pin of the moving piece.
The plug-in key switch according to claim 8, wherein the static film is mainly composed of a static film main body and a static film pin connected to the static film main body, and the lower part of the static film pin is movably inserted into the second plug. In the hole, the second elastic conducting body is sleeved on the upper periphery of the pin of the static piece.