CN216818122U

CN216818122U - Built-in resistance switch

Info

Publication number: CN216818122U
Application number: CN202123348182.6U
Authority: CN
Inventors: 宋明华; 刘二军
Original assignee: Huizhou Greetech Electronics Co ltd
Current assignee: Huizhou Greetech Electronics Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-24
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a built-in resistance switch, which comprises a sealing switch, wherein one end of the sealing switch extends outwards to form a terminal component; the two ends of the waterproof shell are opened, and one end of the waterproof shell is buckled and connected with the sealing switch; the PCBA board is arranged in the waterproof shell and welded with the terminal assembly, and the PCBA board is also welded with the resistor; the connecting wire penetrates into the waterproof shell and is welded with the PCBA board; glue is filled and sealed at the opening at the other end of the waterproof shell, so that the waterproof shell is integrally sealed. The built-in resistance switch is formed by arranging the PCBA on the waterproof shell, welding the resistor on the PCBA, respectively welding the terminal component and the connecting wire with the PCBA, and encapsulating glue to seal the waterproof shell integrally, and has reasonable layout, no increase of the volume of electronic equipment after being arranged on the electronic equipment, simple protection structure and cost reduction, and the protection grade of the built-in resistance switch can reach IP 67.

Description

Built-in resistance switch

Technical Field

The utility model relates to the technical field of switches, in particular to a built-in resistance switch.

Background

The microswitch is a switch which has a micro contact interval and a quick action mechanism, uses a specified stroke and a specified force to carry out switch action, is covered by a shell, and is externally provided with a driving rod, and is named as the microswitch because the contact pitch of the switch is relatively small; in order to facilitate the use of the micro switch, more designs are carried out on the functions of the micro switch in the market, such as small size, micro size, water resistance, explosion resistance and the like; the microswitch is widely applied to daily life or industrial production of people, and is particularly widely applied to the signal control of the charging gun of electronic equipment, instruments and meters, power systems, household appliances, electrical equipment, automobile accessories, equipment (such as automobile seats, door locks and the like) and new energy automobiles.

In order to enable the micro switch to generate different resistance signals when the micro switch is switched on and switched off, a common micro switch is externally connected with a PCB electronic circuit, and resistors are welded on an externally arranged PCBA board, so that different resistance signals are generated when the micro switch is switched on and switched off; however, the resistor is welded on the external PCBA, so that the volume of the electronic device is increased, the electronic components on the PCBA are more complicated to install, and meanwhile, when the external PCBA and the resistor are subjected to waterproof, dustproof and other treatments, the protection structure is complex and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a built-in resistance switch which is reasonable in layout and simple in protection structure.

In order to solve the above technical problems, the present invention can be implemented by adopting the following technical scheme:

a built-in resistive switch comprising:

one end of the sealing switch extends outwards to form a terminal component;

the two ends of the waterproof shell are provided with openings, and one end of the waterproof shell is buckled and connected with one end of the sealing switch, which extends to form a terminal component;

the PCBA is arranged in the waterproof shell and welded with the terminal component, and the PCBA is also welded with the resistor;

the connecting wire penetrates into the waterproof shell and is welded with the PCBA board;

glue is filled and sealed at the opening at the other end of the waterproof shell, so that the waterproof shell is integrally sealed.

In one embodiment, the terminal assemblies include a common terminal, a normally open terminal, and a normally closed terminal.

In one embodiment, the PCBA board is vertically arranged in the waterproof shell, the resistors are welded on one surface of the PCBA board, and the common terminal, the normally closed terminal and the connecting wire are respectively welded with the other surface of the PCBA board.

In one embodiment, the PCBA board is vertically arranged in the waterproof shell, and the resistor, the common terminal, the normally closed terminal and the connecting wire are respectively welded on the same surface of the PCBA board.

In one embodiment, the PCBA board is transversely arranged in the waterproof shell, the resistor, the common terminal and the normally closed terminal are respectively welded with the top surface of the PCBA board, and the bottom surface of the PCBA board is welded with the connecting wire.

In one embodiment, an insulation plate is arranged between the terminal assembly and the PCBA board, and the common terminal and the normally closed terminal penetrate through the insulation plate and are welded with the PCBA board.

In one embodiment, the resistor is a chip resistor.

The utility model has the beneficial effects that: the built-in resistance switch of the utility model, extend the waterproof case of one end of the terminal assembly at the sealed switch, locate PCBA board in the waterproof case, and weld the resistance on PCBA board, the resistance and power of its resistance can be chosen according to the production needs, meanwhile, weld terminal assembly and connecting wire with PCBA board separately, and then pour glue from another end of the waterproof case, make the whole of the waterproof case realize the seal, thus form the built-in resistance switch, and the built-in resistance switch formed is rationally distributed, after installing it on electronic equipment, will not increase the volume of the electronic equipment, in addition, through the design of the pot seal glue, make the protective structure of the built-in resistance switch simple, and can make the protection grade reach IP67, lower costs at the same time.

Drawings

FIG. 1 is an exploded view of a first embodiment of a built-in resistor switch according to the present invention;

FIG. 2 is a cross-sectional view of a first embodiment of the built-in resistance switch of the present invention;

FIG. 3 is an exploded view of a second embodiment of the built-in resistor switch of the present invention;

fig. 4 is a cross-sectional view of a second embodiment of the built-in resistance switch of the present invention.

As shown in the attached drawings:

100. a sealing switch; 200. a terminal assembly; 210. a common terminal; 220. a normally open terminal; 230. a normally closed terminal; 300. a waterproof shell; 400. PCBA board; 500. a resistance; 600. a connecting wire; 700. an insulating plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The first embodiment is as follows:

referring to fig. 1 and 2, a built-in resistor switch includes:

a sealed switch 100, wherein one end of the sealed switch 100 extends outwards to form a terminal assembly 200;

the waterproof case 300 is provided with openings at two ends, and one end of the waterproof case 300 is buckled with one end of the sealing switch 100, which extends to form the terminal assembly 200;

the PCBA board 400 is arranged in the waterproof shell 300, is welded with the terminal component 200 and is also welded with the resistor 500;

a connecting wire 600, wherein the connecting wire 600 penetrates into the waterproof shell 300 to be welded with the PCBA board 400;

glue is filled and sealed at the opening at the other end of the waterproof case 300, so that the waterproof case 300 is integrally sealed.

The terminal assembly 200 in this embodiment includes a common terminal 210, a normally open terminal 220 and a normally closed terminal 230, and the number of the connecting wires 600 may be two or three according to the production requirement, but the number of the connecting wires 600 is not limited in this embodiment.

Specifically, in order to realize the built-in of the resistor 500, the switch in this embodiment is connected to the waterproof case 300 by being fastened at the end of the sealed switch 100 where the terminal assembly 200 extends, and after being fastened, the outer wall of the waterproof case 300 is flush with the outer wall of the sealed switch 100, so that the overall appearance of the built-in resistor switch is simple and beautiful; then the PCBA board 400 is vertically arranged in the waterproof case 300, one surface of the PCBA board 400 is connected with the common terminal 210 and the normally closed terminal 230 in the terminal component 200, meanwhile, the connecting wire 600 is inserted from the bottom end of the waterproof case 300 and is also welded with the surface of the PCBA board 400, the resistor 500 is welded on the other surface of the PCBA board 400, wherein the resistor 500 can select the resistance value and the power of the resistor 500 according to the actual production requirement, finally, glue is sealed in the bottom end of the waterproof case 300 in a pot mode, coats the PCBA board 400, the resistor 500, the terminal component 200 and the connecting wire 600 in the waterproof case 300 and flows into the buckling connection position of the waterproof case 300 and the sealing switch 100 to achieve the overall sealing of the waterproof case 300, the protection grade of the switch reaches IP67, a built-in resistance switch is formed, and the protection structure of the switch is simple through the design of the pot glue, the cost is reduced.

In addition, in order to make the layout of the built-in resistance switch reasonable, the common terminal 210, the normally closed terminal 230, and the connection wire 600 are soldered to one surface of the PCBA board 400, and the resistor 500 is soldered to the other surface of the PCBA board 400, so that both surfaces of the PCBA board 400 are balanced, the stability of the connection between the PCBA board 400 and the terminal assembly 200 is increased, the PCBA board 400, the terminal assembly 200, the resistor 500, and the connection wire 600 are easily soldered, and the overall size of the switch does not excessively increase even after the built-in resistance switch is formed, and the size of the electronic device does not increase even after the built-in resistance switch is mounted to the electronic device.

Certainly, in actual production, the PCBA board 400 is vertically arranged in the waterproof case, the resistor 500, the common terminal 210, the normally closed terminal 230 and the connecting wire 600 can be respectively welded on the same surface of the PCBA board 400, and a built-in resistor switch can be formed, so that the whole volume of the switch is not excessively increased, and the volume of the electronic equipment is not increased after the switch is installed on the electronic equipment.

In order to better arrange the built-in resistance switch and control the volume of the built-in resistance switch, the resistor 500 in the embodiment is a chip resistor, and the chip resistor is small in volume, light in weight, stable in electrical performance and high in reliability; when the printed circuit board assembly is welded on the PCBA board 400, the assembly cost is low, the printed circuit board assembly can be matched with automatic mounting equipment, automatic mounting of the PCBA board 400 and the resistor 500 is achieved, finally, the built-in resistor switch can be conveniently arranged, and the volume of the built-in resistor switch can be effectively controlled.

Example two:

the built-in resistance switch in the present embodiment is basically the same as the built-in resistance switch in the first embodiment, and the main difference is that: the PCBA board 400 is transversely arranged in the waterproof case 300, the resistor 500, the common terminal 210 and the normally closed terminal 230 are respectively welded with the top surface of the PCBA board 400, the bottom surface of the PCBA board 400 is welded with the connecting wire 600, an insulating plate 700 is arranged between the terminal assembly 200 and the PCBA board 400, and the common terminal 210 and the normally closed terminal 230 penetrate through the insulating plate 700 to be welded with the PCBA board 400.

Similarly, in the present embodiment, in order to embed the resistor 500, the PCBA board 400 is horizontally disposed in the waterproof case 300, the common terminal 210 and the normally closed terminal 230 of the terminal assembly 200 are welded to the top surface of the PCBA board 400, the resistor 500 is also welded to the top surface of the PCBA board 400, the connection wire 600 is inserted from the side surface of the waterproof case 300, and the connection wire may be inserted from the bottom of the waterproof case 300 without limitation, and the insertion position thereof is welded to the bottom surface of the PCBA board 400, and the waterproof case 300 is potted with glue, thereby realizing a built-in resistor switch, and the switch is integrally sealed, and the protection level thereof reaches IP67, and the design of the potted glue makes the protection structure of the switch simple and reduces the cost.

When the common terminal 210, the normally closed terminal 230 and the connecting wire 600 are respectively soldered to the PCBA board 400, they may be soldered to one pad position or to pad positions close to each other, so that the common terminal 210, the normally closed terminal 230, the connecting wire 600 and the PCBA board 400 are more stable in electrical connection, and the specific soldering position is determined according to the design of the PCBA board.

In this embodiment, since the PCBA board 400 is disposed in a horizontal state, in order to prevent the normally open terminal 220 of the terminal assembly 200 from contacting the PCBA board 400, which causes a circuit problem, the insulation plate 700 is disposed between the terminal assembly 200 and the PCBA board 400, and the common terminal 210 and the normally closed terminal 230 are welded to the PCBA board 400 through the insulation plate 700, thereby preventing the normally open terminal 220 from contacting the PCBA board 400, improving the circuit safety of the built-in resistance switch, and making the layout of the built-in resistance switch reasonable, thereby effectively controlling the overall volume.

Of course, in the first embodiment, the insulating plate 700 may be provided between the PCBA board 400 and the terminal assembly 200, and the circuit safety of the built-in resistance switch may be similarly improved, specifically, selected according to actual production.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. The present invention may be readily implemented by those skilled in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the utility model as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A built-in resistance switch, comprising:

one end of the sealing switch extends outwards to form a terminal component;

2. The built-in resistive switch of claim 1, wherein: the terminal assembly includes a common terminal, a normally open terminal, and a normally closed terminal.

3. The built-in resistive switch of claim 2, wherein: the PCBA board is vertical and is arranged in the waterproof shell, the resistance is welded on one surface of the PCBA board, and the public terminal, the normally closed terminal and the connecting line are respectively welded with the other surface of the PCBA board.

4. The built-in resistive switch of claim 2, wherein: in the waterproof case was located to the PCBA board is vertical state, resistance, common terminal, normally closed terminal and connecting wire welded respectively in the one side of PCBA board.

5. The built-in resistive switch of claim 2, wherein: the PCBA board is horizontal state and locates in the waterproof case, and resistance, common terminal and normally closed terminal weld with the top surface of PCBA board respectively, and the bottom surface of PCBA board then welds with the connecting wire.

6. The built-in resistive switch of claim 5, wherein: be equipped with the insulation board between terminal subassembly and the PCBA board, public terminal and normally closed terminal run through insulation board and PCBA board welding.

7. The built-in resistive switch of claim 1, wherein: the resistor is a chip resistor.