WO2022166790A1

WO2022166790A1 - Repeat plugging key switch

Info

Publication number: WO2022166790A1
Application number: PCT/CN2022/074476
Authority: WO
Inventors: 吴福喜; 胡海鑫
Original assignee: 东莞市凯华电子有限公司
Priority date: 2021-02-04
Filing date: 2022-01-28
Publication date: 2022-08-11
Also published as: TWM629440U; CN214898194U

Abstract

A repeat plugging key switch, comprising a PCB (1), and a switch main body (2) arranged on the PCB, wherein the switch main body comprises a conduction assembly (21), the conduction assembly comprises a movable piece (211) and a static piece (212), a movable piece bending portion (2110) electrically connected to the PCB is formed on the movable piece, and a static piece bending portion (2120) electrically connected to the PCB is formed on the static piece; and a first plugging hole (13) for plugging a lower end of the movable piece therein is provided on the PCB, and a second plugging hole (14) for plugging a lower end of the static piece therein is provided on the PCB. The repeat plugging key switch has a switch electrical conduction function, and also has a repeat plugging capability; when a switch main body is bad or damaged, the entire switch main body can be directly pulled out for maintenance or replacement, such that the maintenance and replacement are convenient and quick; moreover, there is no need to additionally provide a connector, such that product structures and costs are not increased.

Description

A kind of repeatedly plugging and unplugging key switch

technical field

The utility model relates to the field of key switches, in particular to a key switch that is repeatedly inserted and pulled out.

Background technique

The mechanical switch of the existing mechanical keyboard is directly welded on the PCB board, and its defects are very obvious: once the mechanical switch is defective or damaged, it is difficult to replace the mechanical switch, 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 additional connectors, which are bulky and occupy a large space, which not only increases the product structure, but also increases the product cost.

Utility model content

In view of the above deficiencies, the purpose of the present invention is to provide a repeatedly plugging and unplugging key switch, which has the function of switching electrical conduction and also has the ability to repeatedly plug and unplug. When the switch body is defective or damaged, the whole switch body can be removed. It can be directly pulled out for repair or replacement, which is convenient and quick to repair and replace; moreover, there is no need to add additional connectors, and the product structure and cost will not be increased.

The technical scheme that the utility model adopts to achieve the above-mentioned purpose is:

A push button switch for repeated plugging and unplugging includes a PCB board and a switch body disposed on the PCB board, the switch body includes a conduction component, and the conduction component includes a moving piece and a static piece, and is characterized in that: The moving piece is formed with a bending portion of the moving piece that is electrically connected to the PCB, and a bending portion of the static piece that is electrically connected to the PCB is formed on the static piece; the PCB is provided with a lower end plug of the moving piece. 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.

As a further improvement of the present invention, both the moving piece bending part and the static piece bending part are elastic bodies.

As a further improvement of the present invention, the bending portion of the moving piece and the bending portion of the static piece are both arc-shaped.

As a further improvement of the present invention, a first electrical connection area and a second electrical connection area are arranged on the PCB board, the bending portion of the moving piece is in contact with the first electrical connection area, and the static piece is bent The folded portion is in contact with the second electrical connection area.

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

As a further improvement of the present invention, the first electrical connection area is disposed on the periphery of the upper end face of the first plugging hole, and the second electrical connection area is disposed on the periphery of the upper end face of the second plugging hole.

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 moving piece bending part is formed on the upper end of the moving piece pin and is connected with the moving piece main body, The lower end of the pin of the moving piece is movably inserted into the first insertion hole, and the lower end surface of the bent portion of the moving piece is in contact with the first electrical connection area.

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, and the static plate bent portion is formed on the upper end of the static plate pin and connected with the static plate main body, The lower end of the pin of the static piece is movably inserted into the second insertion hole, and the lower end surface of the bent portion of the static piece is in contact with the second electrical connection area.

The beneficial effects of the present utility model are:

(1) By directly electrically connecting the bending part of the moving plate of the moving plate and the bending part of the static plate in the conduction component to the PCB board, and adding a first plug hole and a second plug hole on the PCB board The pull-out holes are used to insert and pull out 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 of the conduction component 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, and the product structure and cost will not be increased.

(2) Since the bending part of the moving piece of the moving piece and the bending part of the static piece of the static piece have elastic and arc-shaped structural characteristics, the bending part of the moving piece and the bending part of the static piece will not be too large. The force can withstand the first electrical connection area and the second electrical connection area, and it is also easy to pull out the moving piece and the static piece from the PCB board. It can still stick to the first electrical connection area and the second electrical connection area, thereby improving the ability of repeated insertion and extraction, and the multiple insertion and extraction will not affect the conduction performance of the switch.

The above is an overview of the technical solutions of the utility model. The utility model 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 utility model;

Fig. 2 is another sectional view of the utility model;

Fig. 3 is the structural schematic diagram that the moving piece and the static piece are arranged on the PCB board in the utility model;

Fig. 4 is the structural representation of the middle moving plate of the utility model;

Fig. 5 is the structural representation of the static film in the utility model;

6 is an exploded view of the overall structure of the present utility model;

FIG. 7 is a schematic structural diagram of the conduction component and the guide core in an unpressed state of the present invention;

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

9 is a schematic diagram of the overall external structure of the present utility model;

FIG. 10 is a schematic diagram of the rear structure of the switch body disposed on the PCB board 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 implementation of the present invention will be 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 push-button switch that repeatedly plugs and pulls, including a PCB board 1 and a switch body 2 disposed on the PCB board 1 , and the switch body 2 includes a conduction component 21. The conduction component 21 includes a moving piece 211 and a static piece 212. A moving piece bending portion 2110 is formed on the moving piece 211 and is electrically connected to the PCB board. The static piece 212 is formed with a PCB board. A bending portion 2120 of the static piece electrically connected; a first insertion hole 13 for inserting and pulling the lower end of the driving piece 211 is opened on the PCB board 1, and a lower end of the static piece 212 is opened on the PCB board 1 A second plug hole 14 for pulling out.

By using the moving piece bending portion 2110 of the moving piece 211 and the static piece bending portion 2120 of the static piece 212 to be directly electrically connected to the PCB board, and adding a first plugging hole 13 and a second plugging hole on the PCB board 1 14. The lower end of the moving piece 211 and the lower end of the static piece 212 are respectively inserted and removed, so that the moving piece 211 and the static piece 212 have the function of switching electrical conduction and also have the capability of repeated insertion and removal.

In this embodiment, the moving piece bending portion 2110 and the static piece bending portion 2120 are both elastic bodies, that is, the moving piece bending portion 2110 and the static piece bending portion 2120 both have elasticity. At the same time, both the moving piece bending portion 2110 and the static piece bending portion 2120 are arc-shaped, as shown in FIG. 4 and FIG. 5 .

Specifically, a first electrical connection area 11 and a second electrical connection area 12 are provided on the PCB board 1 , and the moving piece bending portion 2110 is in contact with the first electrical connection area 11 to achieve electrical connection. The bent portion 2120 of the static sheet is in contact with the second electrical connection region 12 for electrical connection.

When the lower end of the moving piece 211 is inserted into the first insertion hole 13 , the bent portion 2110 of the moving piece is in direct contact with the first electrical connection area 11 and exerts a small downward force on the first electrical connection area 11 . That is, the bending portion 2110 of the moving piece is pressed on the first electrical connection region 11 to realize electrical connection. Since the moving piece bending portion 2110 has an elastic and arc-shaped structure, the moving piece bending portion 2110 will not bear the first electrical connection area 11 with excessive force, and it is also convenient to remove the moving piece 211 from the PCB. When the board is pulled out, during repeated plugging and unplugging, the bent portion 2110 of the moving piece can still stick to the first electrical connection area 11, thereby improving the ability of repeated plugging and unplugging, and multiple plugging and unplugging will not affect the conduction performance of the switch.

Similarly, due to the elastic and arc-shaped structure of the static sheet bending portion 2120, the static sheet bending portion 2120 will not bear the second electrical connection area 12 with excessive force, and it is also convenient for the static sheet to be bent. 212 is pulled out from the PCB board. When repeatedly plugging and unplugging, the bent portion 2120 of the static sheet can still stick to the second electrical connection area 12, thereby improving the ability of repeated plugging and unplugging, and multiple plugging and unplugging will not affect the conduction performance of the switch .

In this embodiment, specifically, the first electrical connection region 11 is one of the solder paste coating and the copper layer, and the second electrical connection region 12 is the solder paste coating and the copper layer. one of them.

In terms of specific structure, as shown in FIG. 3 , the first electrical connection area 11 can be disposed on the periphery of the upper end face of the first plug-in hole 13 , and the second electrical connection area 12 can be disposed on the top of the second plug-in hole 14 . End face periphery. By arranging the first electrical connection area 11 on the periphery of the first plug hole 13, that is, on the periphery of the bending portion 2110 of the moving plate; the second electrical connection area 12 is disposed on the periphery of the second plug hole 14, that is, on the static plate The periphery of the bent portion 2120. After repeated plugging and unplugging, it can be ensured that the bent portion 2110 of the moving piece can always be in easy contact with the first electrical connection region 11 , and the bent portion 2120 of the static piece can always be in easy contact with the second electrical connection region 12 .

In this embodiment, as shown in FIG. 4 , 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 moving piece bending portion 2110 is formed on the moving piece The upper end of the pin 2112 is connected to the moving piece body 2111 , the lower end of the moving piece pin 2112 is movably inserted into the first insertion hole 13 , and the lower end surface of the moving piece bending portion 2110 is in contact with the first electrical connection area 11 . When the lower end of the rotor pin 2112 is inserted into the first insertion hole 13, the bent portion 2110 of the rotor is just stuck above the first insertion hole 13, and will not fall into the first insertion hole 13, and will be bent sideways. The bent portion 2110 of the folded moving piece is in direct contact with the first electrical connection area 11 , so as to realize the electrical connection between the moving piece 211 and the PCB board 1 , as shown in FIG. 3 .

In this embodiment, as shown in FIG. 5 , 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 , and the static plate bending portion 2120 is formed on the static plate The upper end of the pin 2122 is connected to the stationary plate body 2121 , the lower end of the stationary plate pin 2122 is movably inserted into the second insertion hole 14 , and the lower end surface of the stationary plate bending portion 2120 is in contact with the second electrical connection area 12 . When the lower end of the pin 2122 of the static plate is inserted into the second insertion hole 14, the bent portion 2120 of the static plate is just stuck above the second insertion hole 14, and will not fall into the second insertion hole 14, and is bent to the side. The bent portion 2120 of the folded static sheet is in direct contact with the second electrical connection area 12 , so as to realize the electrical connection between the static sheet 212 and the PCB board 1 , as shown in FIG. 3 .

When the plugging operation is performed, the switch body 2 as a whole performs the plugging operation on the PCB board 1 . When the switch body 2 is inserted into the PCB board 1, the moving piece pins 2112 of the moving piece 211 are inserted into the first insertion holes 13, and the moving piece bending portion 2110 is in contact with the first electrical connection area 11 to achieve electrical connection; The static plate pins 2122 of the static plate 212 are inserted into the second insertion holes 14 , and the static plate bent portion 2120 is in contact with the second electrical connection area 12 to achieve electrical connection. When the switch body 2 is pulled out from the PCB board 1 , the switch body 2 is separated from the PCB board 1 as a whole.

For the specific structure of the switch main body 2 in this embodiment, as shown in FIG. 6 and FIG. 9 , 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 , and the above-mentioned conducting component 21 . 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, so that the moving contact 2113 on the moving piece 211 is separated from the static contact 2123 on the static piece 212, That is, the switch is in the off state, as shown in Figure 7. When the guide core 30 is pressed down, under the action of the inclined surface on the surface of the pressing block 301 on the side of the guide core 30, the moving piece main body 2111 is elastically reset along with the inclined surface, and finally the moving contact 2113 on the moving piece 211 is reset. It is in contact with the static contact 2123 on the static piece 212, and at the same time, since the moving piece bending part 2110 of the moving piece 211 and the static piece bending part 2120 of the static piece 212 are directly electrically connected to the PCB board, the switch is in conduction. state, as shown in Figure 8. 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. 10 , 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 are only preferred embodiments of the present utility model, and do not limit the technical scope of the present utility model. Therefore, the same or similar technical features as the above-mentioned embodiments of the present utility model are adopted, and other structures obtained are all within the scope of protection of the present invention.

Claims

A push button switch for repeated plugging and unplugging includes a PCB board and a switch body disposed on the PCB board, the switch body includes a conduction component, and the conduction component includes a moving piece and a static piece, and is characterized in that: The moving piece is formed with a bending portion of the moving piece that is electrically connected to the PCB, and a bending portion of the static piece that is electrically connected to the PCB is formed on the static piece; the PCB is provided with a lower end plug of the moving piece. 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 push button switch according to claim 1, wherein the bending part of the moving piece and the bending part of the static piece are both elastic bodies.
The push button switch according to claim 1, wherein the bending part of the moving piece and the bending part of the static piece are both arc-shaped.
The push button switch according to any one of claims 1 to 3, wherein a first electrical connection area and a second electrical connection area are provided on the PCB board, and the moving piece is bent The portion is in contact with the first electrical connection area, and the bent portion of the static sheet is in contact with the second electrical connection area.
The push button switch according to claim 4, wherein the first electrical connection area is one of a solder paste coating and a copper layer, and the second electrical connection area is solder paste One of coating and copper layer.
The push button switch according to claim 4, wherein the first electrical connection area is arranged on the periphery of the upper end face of the first insertion hole, and the second electrical connection area is arranged on the second insertion hole. The outer periphery of the upper end face of the extraction hole.
The push button switch according to claim 4, 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 moving piece bending part is formed on the moving piece The upper end of the pin is connected with the main body of the moving piece, the lower end of the moving piece pin is movably inserted into the first insertion hole, and the lower end surface of the bent portion of the moving piece is in contact with the first electrical connection area.
The push button switch according to claim 4, wherein the static plate is mainly composed of a static plate main body and a static plate pin connected to the static plate main body, and the static plate bent portion is formed on the static plate The upper end of the pin is connected to the main body of the static piece, the lower end of the pin of the static piece is movably inserted into the second insertion hole, and the lower end surface of the bent portion of the static piece is in contact with the second electrical connection area.