WO2022166785A1

WO2022166785A1 - Quick-removable switch

Info

Publication number: WO2022166785A1
Application number: PCT/CN2022/074471
Authority: WO
Inventors: 吴福喜; 吴浪
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: CN114883135A; TWM627858U

Abstract

Disclosed in the present invention is a quick-removable switch, comprising a PCB and a switch body provided on the PCB. The switch body comprises a conductive assembly; the conductive assembly comprises a first conductive terminal and a second conductive terminal; the first conductive terminal and the PCB are electrically connected by means of a first elastic conductive body; and the second conductive terminal and the PCB are electrically connected by means of a second elastic conductive body. The quick-removable switch provided in the present invention not only has an electrical conduction switch function, but also has repeated quick insertion/removal capability. When a failure or damage occurs in the switch body, the entire switch body can be directly removed for repair or replacement, such that the repair and replacement are convenient and efficient. Moreover, no additional connectors are needed, such that the overall size and space occupied will not be increased, and the cost will not be increased.

Description

A quick-plug switch

technical field

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

Background technique

The mechanical switch of the existing mechanical keyboard or the micro switch on the mouse is directly welded on the PCB board, and the defects are very obvious: once the switch is defective or damaged, it is difficult to replace the switch and the maintenance cost is high, and the end user generally cannot do it by himself. Replacement, even if it can be replaced, wastes a long time, and there is a hidden danger of welding; in addition, this structural design also prevents end users from choosing different types of switches for different keys of the keyboard according to their own preferences.

In order to solve the problem of difficult switch replacement, a plug-in switch has appeared 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 quick-plug switch, which not only has the electrical conduction function of the switch, but also has the capability of repeated quick-plugging. When the switch body is defective or damaged, the whole switch body can be directly It is convenient and quick to repair or replace by pulling it out; 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 quick-plug switch 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 first conduction terminal and a second conduction terminal , characterized in that the first conductive terminal and the PCB board are electrically connected through a first elastic conducting body, and the second conducting terminal and the PCB board are electrically connected through a second elastic conducting body .

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 the solder paste coating and the pad, and the second electrical connection area is one of the solder paste coating and the pad .

As a further improvement of the present invention, one of the first conducting terminal and the PCB board is connected to the first elastic conducting body, and one of the second conducting terminal and the PCB board is integrally connected. One is integrally connected with the second elastic conducting body.

As a further improvement of the present invention, the first elastic conductive body is welded or clamped on the first conductive terminal, or the first elastic conductive body is welded on the PCB board; the second elastic conductive body It is welded or clamped on the second conducting terminal, or the second elastic conducting body is welded on the PCB board.

As a further improvement of the present invention, the first elastic conducting body is a first spring, the upper part of the first spring is sleeved on the periphery of the first conducting terminal, and the lower part is electrically connected to the first electrical connection area; the second The elastic conducting body is a second spring, the upper part of the second spring is sleeved on the periphery of the second conducting terminal, and the lower part is electrically connected with the second electrical connection area.

As a further improvement of the present invention, a first cavity and a second cavity are formed in the switch main body through to the lower end surface of the switch main body, and the upper part of the first conduction terminal and the first spring is located in the first cavity Inside the body, the second conductive terminal and the upper part of the second spring are located in the second cavity.

As a further improvement of the present invention, the switch main body is provided with at least one elastic undercut structure that is buckled on the PCB board. It is composed of a guiding lobe on the undercut inserting block, the guide lobe has an upper guiding inclined surface and a lower guiding inclined surface; and at least one clamping hole is formed on the PCB board for the elastic inversion structure to be clamped.

As a further improvement of the present invention, the conducting component further includes a common terminal, and the common terminal and the PCB are electrically connected through a third elastic conducting body.

As a further improvement of the present invention, a third electrical connection area electrically connected to the third elastic conducting body is provided on the PCB board, and the third electrical connection area is the connection between the solder paste coating and the pad. One of them; one of the common terminal and the PCB board is connected to a third elastic conducting body; the third elastic conducting body is a third spring, and the upper part of the third spring is sleeved on On the periphery of the common terminal, the lower part is electrically connected to the third electrical connection area; a third cavity is formed in the switch body and penetrates to the lower end surface of the switch body, and the upper part of the common terminal and the third spring is located in the third cavity .

The beneficial effects of the present invention are:

(1) The electrical connection between the first conductive terminal and the PCB board is realized by adding a first elastic conductive body, and the electrical connection between the second conductive terminal and the PCB board is realized by adding a second elastic conductive body, instead of connecting the conductive terminal and the PCB board. The way that the through terminal is directly welded on the PCB board enables the first through terminal and the second through terminal to have the function of switching electrical conduction, and also have the ability to repeatedly and quickly 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 conducting body and the second elastic conducting body have elasticity, the first elastic conducting body just abuts between the first conducting terminal and the first electrical connection area, and the second elastic conducting body just contacts between the first conducting terminal and the first electrical connection area. The conducting body just abuts between the second conducting terminal and the second electrical connection area, which can not only ensure the first conducting terminal and the first electrical connecting area, the second conducting terminal and the second electrical connecting area The electrical connection between the connection areas will not exert excessive force on the first conductive terminal and the first electrical connection area, and the second conductive terminal and the second electrical connection area, especially without excessive force. A large force resists the first electrical connection area and the second electrical connection area, so the switch can be turned on while realizing the function of repeated plugging and unplugging.

(3) Through the special structural design of the elastic inverted structure on the switch body, the switch body can be directly inserted into the PCB board, so that the switch body can be positioned and fixed on the PCB board, thereby replacing the traditional soldering method; The quick plug-in operation of the switch body on the PCB board is realized, and the elastic inverted buckle structure can be used repeatedly, and the effect of quick plug-in can be realized without using any tools.

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 a schematic structural diagram of the conduction component disposed on the PCB in the present invention;

3 is a schematic structural diagram of the switch body combined with a PCB board through an elastic undercut structure in the present invention;

4 is a schematic diagram of the rear structure of the switch body disposed on the PCB in the present invention;

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

FIG. 6 is a schematic diagram of the overall external structure of 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.

Please refer to FIG. 1 and FIG. 2 , an embodiment of the present invention provides a quick-plug 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 conducting element 21 includes a first conducting terminal 211 and a second conducting terminal 212 . The first conducting terminal 211 and the PCB board 1 are electrically connected through a first elastic conducting body 3 . The two conductive terminals 212 are electrically connected to the PCB board 1 through a second elastic conductive body 4 .

By using the first elastic conductive body 3 to realize the electrical connection between the first conductive terminal 211 and the PCB board 1, and using the second elastic conductive body 4 to realize the electrical connection between the second conductive terminal 212 and the PCB board 1, Instead of directly soldering the conducting terminals on the PCB board, the first conducting terminals 211 and the second conducting terminals 212 have the capability of repeatedly and quickly plugging and unplugging while having the function of switching electrical conduction.

In this embodiment, a first electrical connection area 11 and a second electrical connection area 12 are disposed on the PCB board 1 , and the first elastic conductive body 3 is electrically connected to the first electrical connection area 11 , the second elastic conductive body 4 is electrically connected to the second electrical connection region 12 . 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 connection region 11, or be welded on the first electrical connecting region 11; similarly, the second elastic conducting body 4 can directly contact the second electrical connecting region 11. The connection area 12 is soldered on the second electrical connection area 12 .

When the switch body 2 is mounted on the PCB board 1 , the first elastic conducting body 3 is electrically connected to the first conducting terminal 211 and the first electrical connection area 11 respectively, so as to realize the first conducting terminal 211 and the first electrical connection area 11 respectively. Electrical connection of the sexual connection area 11 . Since the first elastic conducting body 3 has elasticity, the first elastic conducting body 3 just abuts between the first conducting terminal 211 and the first electrical connection area 11 , which not only ensures that the first conducting terminal 211 and the The electrical connection between the first electrical connection areas 11 will not exert excessive force on the first conductive terminal 211 and the first electrical connection area 11, especially the An electrical connection area 11, therefore, while realizing the function of repeated plugging and unplugging, it can also ensure the conduction performance of the switch.

Similarly, the second elastic conductive body 4 is electrically connected to the second conductive terminal 212 and the second electrical connection area 12 respectively, so as to realize the electrical connection between the second conductive terminal 212 and the second electrical connection area 12 . Due to the elasticity of the second elastic conducting body 4 , the second elastic conducting body 4 just abuts between the second conducting terminal 212 and the second electrical connection area 12 , which not only ensures that the second conducting terminal 212 and The electrical connection between the second electrical connection areas 12 will not exert excessive force on the second conductive terminal 212 and the second electrical connection area 12 , and especially will not withstand the The two electrical connection regions 12, therefore, while realizing the function of repeated plugging and unplugging, the switch conduction performance can also be ensured.

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

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 first conductive terminal 211 and the PCB board 1 is connected to the first elastic conductive body 3 as a whole. Preferably, the first elastic conductive body 3 is welded or clamped On the first conductive terminal 211, or the first elastic conductive body 3 is welded on the PCB board 1; one of the second conductive terminal 212 and the PCB board 1 is connected to the second elastic conductive body. The whole body 4 is connected into one body. Preferably, the second elastic conductive body 4 is welded or clamped on the second conductive terminal 212 , or the second elastic conductive body 212 is welded on the PCB board 1 .

When the first elastic conducting body 3 is connected to the first conducting terminal 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 elastic conducting body 3 is connected to the PCB board 1 as a whole, it can be welded with the first electrical connection area 11. When the switch body 2 is pulled out from the PCB board 1, the first elastic conducting body 3 remains in on PCB board 1. Similarly, when the second elastic conducting body 4 and the second conducting terminal 212 are connected together, when the switch body 2 is pulled out from the PCB board 1, the second elastic conducting body 4 leaves the PCB board 1 along with it; When the second elastic conducting body 4 is integrally connected with the PCB board 1 , specifically, it can be welded with the second electrical connection area 12 . When the switch body 2 is pulled out from the PCB board 1 , the second elastic conducting body 4 is 4 left on PCB board 1.

Thus, by connecting the first elastic conducting body 3 to any one of the first conducting terminal 211 and the PCB board 1, the second elastic conducting body 4 connects the second conducting terminal 212 and the PCB On any one of the two boards 1 , 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 is a first spring, the upper part of the first spring is sleeved on the periphery of the first conducting terminal 211 , and the lower part is electrically connected to the first electrical connection area 11 ; the The second elastic conducting body 4 is a second spring, the upper part of the second spring is sleeved on the periphery of the second conducting terminal 212 , and the lower part is electrically connected to the second electrical connection area 12 . Of course, the first elastic conducting body 3 and the second elastic conducting body 4 can also be elastic pieces.

In order to limit the upper part of the first spring and the upper part of the second spring, in this embodiment, a first cavity 22 and a second cavity 23 are formed in the switch main body 2 penetrating to the lower end surface of the switch main body 2 . The first conductive terminal 211 and the upper part of the first spring are located in the first cavity 22 , and the second conductive terminal 212 and the upper part of the second spring are located in the second cavity 23 . The upper part of the first spring and the upper part of the second spring are limited by the arrangement of the first cavity 22 and the second cavity 23 .

In the specific structural design, the first conductive terminal 211 and the second conductive terminal 212 can be set so as not to penetrate the first cavity 22 and the second cavity 23 , and then the switch body 2 is installed on the PCB board 1 . , the first conductive terminal 211 will not be in contact with the first electrical connection area 11, the second conductive terminal 212 will not be in contact with the second electrical connection area 12, and only the lower part of the first spring will be in contact with the first electrical connection The area 11 is in contact to achieve electrical connection, and the lower part of the second spring is in contact with the second electrical connection area 12 to achieve electrical connection.

In this embodiment, as shown in FIG. 3 and FIG. 4 , the switch body 2 is provided with at least one elastic undercut structure 24 that is buckled on the PCB board 1 . Specifically, the elastic undercut structure 24 is mainly It consists of an undercut insert block 241 extending toward the direction of the PCB board 1, and a guide lobe 242 formed on the undercut insert block 241. The guide lobe 242 has an upper guide slope 2421 and a lower guide slope 2422 ; At least one clamping hole 14 is formed on the PCB board 1 for the elastic undercut structure 24 to be inserted. Preferably, the switch main body 2 in this embodiment has two elastic undercut structures 24 , and the guiding lobes 242 of the two elastic undercut structures 24 are in opposite directions.

When the switch body 2 is installed on the PCB board 1, the undercut inserting blocks 241 of the two elastic undercut structures 24 are inserted into the card holes 14 on the PCB board 1. During insertion, due to the elasticity of the elastic undercut structures 24, And under the guiding action of the lower guiding inclined surface 2422 of the guiding lobe 242, the two elastic undercut structures 24 are bent inward, so that the undercut inserts 241 of the two elastic undercut structures 24 are inserted into the card holes 14 and elastically reset. , so that the guiding lobes 242 of the two elastic undercut structures 24 are hooked on the lower surface of the PCB board 1 , and the switch body 2 is fixed on the PCB board 1 .

When the switch body 2 is pulled upward, the two elastic undercut structures 24 are bent inward due to the elasticity of the elastic undercut structure 24, and under the guiding action of the upper guide inclined surface 2421 of the guide lobe 242, the two elastic undercut structures 24 are bent inward. The guiding lobes 242 of the inverted buckle structure 24 come out from the clamping holes 14 and are no longer fixed on the PCB board 1 , so that the entire switch body 2 can be pulled out from the PCB board 1 .

Through the special structural design of the elastic inversion structure 24 on the switch main body 2, the switch main body 2 can be directly inserted into the PCB board 1, so that the switch main body 2 can be positioned and fixed on the PCB board 1, thereby replacing the traditional soldering method; At the same time, the quick plug-in operation of the switch body 2 on the PCB board 1 can be realized, and the elastic undercut structure 24 can be used repeatedly, and the effect of quick plug-in can be realized without using any tools.

The first conduction terminal 211 and the second conduction terminal 212 in the conduction element 21 in this embodiment can be respectively the first conduction terminal and the second conduction terminal structure, and the first conduction terminal and the second conduction terminal are composed of the first conduction terminal and the second conduction terminal respectively. The on-off function of the switch is realized by the contact of the first conducting terminal and the disconnecting function of the switch is realized by the separation of the first conducting terminal and the second conducting terminal.

Of course, the main body of the switch in this embodiment can also be a micro switch, and the conducting component 21 further includes a common terminal 213. As shown in FIG. 1 and FIG. The conducting body 5 is electrically connected. Specifically, the PCB board 1 is provided with a third electrical connection area 13 that is electrically connected to the third elastic conductive body 5 , and the third electrical connection area 13 is the connection between the solder paste coating and the pad. One of them; one of the common terminal 213 and the PCB board 1 is connected with the third elastic conducting body 5 ; the third elastic conducting body 5 is a third spring, the third spring The upper part is sleeved on the periphery of the common terminal 213 , and the lower part is electrically connected with the third electrical connection area 13 ; a third cavity 25 is formed in the switch body 2 penetrating to the lower end surface of the switch body 2 , and the common terminal 213 The upper part with the third spring is located in the third cavity 25 .

As for the specific structure of the switch body 2 as a micro switch, as shown in FIGS. 5 and 6 , the switch body 2 includes a base 10 , an upper cover 20 arranged on the base 10 , and a guide core arranged in the upper cover 20 30. The reed 40 disposed in the upper cover 20 and connected between the first conducting terminal 211 and the second conducting terminal 212, and the above-mentioned conducting component 21.

When the switch body 2 is not pressed, the guide core 30 does not act on the reed 40 , the end 401 of the reed 40 is separated from the second conducting terminal 212 , and the first conducting terminal 211 and the second conducting terminal 212 are separated. Off, that is, the switch is in the off state, as shown in Figure 1. When the guide core 30 is pressed down, the guide core 30 acts on the reed 40, and the end 401 of the reed 40 deforms and moves downward, and then contacts the second conducting terminal 212, then the first conducting terminal 211 and the second conducting terminal 211 are connected to the second conducting terminal 212. The conduction terminal 212 is turned on, and since the first conduction terminal 211 is directly electrically connected to the PCB board 1 through the first elastic conduction body 3 and the second conduction terminal 212 through the second elastic conduction body 4, the switch is in the conducting state. 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 reed 40 .

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 quick-plug switch 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 first conduction terminal and a second conduction terminal , characterized in that the first conductive terminal and the PCB board are electrically connected through a first elastic conducting body, and the second conducting terminal and the PCB board are electrically connected through a second elastic conducting body .
The quick-plug 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 quick-plug switch according to claim 2, wherein the first electrical connection area is one of a solder paste coating and a pad, and the second electrical connection area is a solder paste coating One of layers and pads.
The quick-plug switch according to claim 1, wherein one of the first conductive terminal and the PCB board is connected to a first elastic conductive body, and the second conductive One of the terminal and the PCB is connected with the second elastic conducting body.
The quick-plug switch according to claim 4, wherein the first elastic conductive body is welded or clamped on the first conductive terminal, or the first elastic conductive body is welded on the PCB board ; The second elastic conducting body is welded or clamped on the second conducting terminal, or the second elastic conducting body is welded on the PCB board.
The quick-plug switch according to claim 2, wherein the first elastic conducting body is a first spring, the upper part of the first spring is sleeved on the periphery of the first conducting terminal, and the lower part is electrically connected to the first spring. The connecting area is electrically connected; the second elastic conducting body is a second spring, the upper part of the second spring is sleeved on the periphery of the second conducting terminal, and the lower part is electrically connected with the second electrical connection area.
The quick-plug switch according to claim 6, wherein a first cavity and a second cavity are formed in the switch main body and penetrate to the lower end surface of the switch main body, and the first conduction terminal The upper part of the first spring is located in the first cavity, and the second conductive terminal and the upper part of the second spring are located in the second cavity.
The quick-plug switch according to claim 1, wherein the switch body is provided with at least one elastic undercut structure that is buckled on the PCB board, and the elastic undercut structure mainly extends toward the PCB board. It is composed of an upside-down insert block and a guide lobe formed on the upside-down insert block. The guide lobe has an upper guide slope and a lower guide slope; the PCB board is formed with an elastic reverse buckle. At least one card hole into which the structure is snapped.
The quick-plug switch according to any one of claims 1 to 8, wherein the conducting component further comprises a common terminal, and a third elastic conducting body is electrically connected between the common terminal and the PCB board. connect.
The quick-plug switch according to claim 9, wherein a third electrical connection area electrically connected to the third elastic conducting body is provided on the PCB board, and the third electrical connection area is One of the solder paste coating and the pad; one of the common terminal and the PCB board is connected to a third elastic conducting body; the third elastic conducting body is a third spring , the upper part of the third spring is sleeved on the periphery of the common terminal, and the lower part is electrically connected to the third electrical connection area; a third cavity is formed in the switch main body and penetrates to the lower end surface of the switch main body, and the common terminal is connected to the The upper part of the third spring is located in the third cavity.