WO2022041323A1

WO2022041323A1 - Microswitch

Info

Publication number: WO2022041323A1
Application number: PCT/CN2020/114602
Authority: WO
Inventors: 黎金刚
Original assignee: 乐清市通达有线电厂
Priority date: 2020-08-27
Filing date: 2020-09-10
Publication date: 2022-03-03
Also published as: CN112017887A; CN112017887B

Abstract

A microswitch, which comprises a housing (1); a contact component (2), an input element (3), and an output component (4) are provided inside the housing (1); the contact component (2) and the input element (3) are constantly connected; a press element (5) that controls the connection or disconnection of the contact component (2) and the output component (4) is provided on the housing (1); a circuit board (6) is provided inside the housing (1); the output component (4) comprises a first output pin (412) and a second output pin (422) on the circuit board (6); the circuit board (6) is electrically connected to the input element (3), the first output pin (412), and the second output pin (422); the circuit board (6) is provided with a first resistor (8) and a second resistor (9); the circuit board (6) is provided with two connecting lines (10) that respectively input and output current; the output component (4) comprises a first output element (411) and a second output element (421); the contact component (2) is constantly connected to the first output element (411) or the second output element (421); and a switch component (7) that connects the first output pin (412) and the first output element (411) or the second output pin (422) and the second output element (421) is provided inside the housing (1). By controlling the press element (5) and the switch component (7) on a switch, three-gear changes of the current output are achieved, leading to more application ideas for the microswitch.

Description

Micro Switch

technical field

The present application relates to the technical field of switches, in particular to a micro switch.

Background technique

The micro switch is a contact mechanism with a small contact interval and a snap-action mechanism, and a contact mechanism that performs the switching action with a specified formation and a specified force. , hence the name micro switch, also known as sensitive switch.

For example, the utility model patent with the publication number CN211062627U discloses a silent micro switch, which includes a base, a cover connected to the upper part of the base, a button, a spring, and a terminal arranged in the cavity enclosed by the base and the cover, and the spring is a button Provides a pressing feel and returns the button, the shrapnel is clamped on the terminal, one end of the shrapnel is a fixed end and is fixed on the terminal, and the other end is a movable end and is suspended in the enclosed chamber of the base and the cover sheet, and the movable end is set For the buffer arc.

technical problem

Regarding the above-mentioned related technologies, the improvement of the current related technologies usually revolves around its use performance and service life, etc., so that the function of the micro switch is always a single control circuit to open and close, which is relatively limited.

technical solutions

In order to overcome the defect of single function of the micro switch, the present application provides a micro switch, which combines the functions of controlling the opening and closing of the circuit and changing the magnitude of the output current.

A micro switch provided by the present application adopts the following technical solution: a micro switch, including a housing, and the housing is provided with a contact component, an input component and an output component made of conductive materials, the contact component and the input component Always connected, the casing is provided with a pressing piece that controls the connection or disconnection of the contact assembly and the output assembly, a circuit board is disposed in the casing, and the output assembly includes a first output pin and a first output pin arranged on the circuit board. Two output pins, the circuit board is electrically connected with the input piece, the first output pin and the second output pin, the circuit board is electrically connected with a first resistance piece and a second resistance piece, and the circuit board is electrically connected with two Root connecting wires for input and output current respectively.

The output assembly further includes a first output member and a second output member respectively located above the first output pin and the second output pin, and the contact assembly is always connected to the first output member or the second output member.

A switch assembly for conducting connection between the first output pin and the first output piece or the second output pin and the second output piece is arranged in the casing.

By adopting the above-mentioned technical solution, by adding a circuit board, the connecting lines of the input and output currents are electrically connected to the circuit board. When connected, the current is directly transmitted through the contact assembly, the second output member and the circuit board, and the maximum current is output because it does not pass through the first resistance member and the second resistance member.

When the switching component connects the first output piece with the first output pin, and the contact component is connected with the first output piece, the current is transmitted through the contact component, the first output piece, the circuit board and the first resistance piece, thereby outputting Moderate current.

When the switching assembly connects the first output member and the first output pin, and the contact assembly and the second output member are connected, or when the switching assembly connects the second output member and the second output pin, and the contact assembly and the first output When the components are connected, the current is transmitted through the circuit board, the first resistive component and the second resistive component, thereby outputting the minimum current.

By controlling the pressing parts and switching components on the switch, the three-speed change of the current output is realized, which brings more application ideas to the micro switch and widens the application market of the micro switch.

Preferably, the input member includes an input board disposed at one end of the circuit board, both sides of the input board are bent and provided with connecting boards protruding toward the contact assembly, and the ends of the connecting boards are bent away from the direction of the circuit board. There are abutting plates, and the end faces of the two abutting plates facing the contact assembly are both provided with movable grooves.

The contact assembly includes a contact plate, one side of the contact plate is provided with two movable plates, the ends of the two movable plates are inserted into the corresponding movable grooves and can swing, and the contact plate and the input plate are located between the two movable plates. Connected with elastic.

By adopting the above technical solution, the contact plate is connected by the elastic member, and the contact plate can swing through the cooperation of the movable plate and the movable slot, and the pressing member can drive the contact plate to swing by pressing the elastic member, thereby realizing the Connection and disconnection of outputs.

Preferably, the elastic member is configured as a tension spring, the input plate and the contact plate are both provided with through holes, and the hooks of the two sections of the tension spring are respectively hooked in the two through holes.

By adopting the above technical solution, the input plate and the contact plate are connected by the tension spring, which can provide an effective tension force for a long time, so that the tension spring can quickly drive the contact plate to swing when under the action of the pressing member.

Preferably, the opening of the movable groove on the side wall of the contact plate is arranged in a "V" shape.

By adopting the above technical solution, the opening of the movable slot on the side wall of the contact plate is set to a "V" shape, which is beneficial to improve the stability of the movable plate during the swinging process.

Preferably, a reinforcing plate is arranged between the two connecting plates, the reinforcing plate is bent, and the reinforcing plate is bent in a direction away from the elastic member.

By adopting the above technical solution, the arrangement of the reinforcing plate can effectively improve the structural strength and stability of the connecting plate, thereby ensuring the stability of the movable plate during the swinging process, and at the same time, the bending arrangement of the reinforcing plate also provides space for the deformation of the tension spring. space.

Preferably, the outer casing includes a lower casing, a middle casing and an upper casing, the circuit board is located at the upper end of the lower casing, and the switching assembly is arranged on the inner bottom wall of the lower casing.

By adopting the above technical solution, the housing is divided into an upper housing, a middle housing and a lower housing, which facilitates the installation of the internal components in the housing, and the lower housing provides installation space for the circuit board and the switching components.

Preferably, the circuit board has a waist-shaped hole passing through it, the switching component includes a connecting rod passing through the waist-shaped hole, the upper end of the connecting rod is provided with a fixing rod perpendicular to the connecting rod, and the two ends of the fixing rod are Both are provided with energizing plates made of conductive materials. When the connecting rod slides to both ends of the waist-shaped hole, the two energizing plates connect the first output pin, the first output piece, the second output pin and the first output pin, respectively. Two output pieces.

By adopting the above technical solution, by controlling the connecting rod to slide back and forth in the waist-shaped hole, the two energizing plates on the fixing rod are driven to connect the first output pin, the first output piece, the second output pin and the second output respectively. It has a relatively simple structure, is easy to install and operate, and has strong connection stability.

Preferably, the switching assembly further includes an installation frame slidably connected to the inner bottom wall of the lower casing, an electromagnet is arranged in the installation frame, the connecting rod is connected with the upper end surface of the installation frame, and the lower casing is provided with an electromagnet. The inner bottom wall is provided with a magnet block on one side of the electromagnet, and the magnet block and the opposite side of the electromagnet after electrification have opposite magnetic poles.

By adopting the above technical solution, the electromagnet has an iron core. When the electromagnet is not energized, the iron core and the magnet block attract each other; The block and the magnet block are repelled, and then the connecting rod can be controlled to move left and right to switch the circuit by energizing and de-energizing the point electromagnet.

Preferably, both sides of the lower end surface of the mounting frame are provided with "L"-shaped limiting feet, and two sliding grooves matching the limiting feet are provided on the inner bottom wall of the lower casing.

By adopting the above technical solutions, the mounting frame can slide stably in the lower casing through the mutual cooperation of the limiting feet and the sliding grooves.

Preferably, the lower casing is provided with a fixing block on the other side of the installation frame relative to the magnet block. When the connecting rod is in contact with both ends of the waist-shaped hole, the installation frame is respectively connected to the magnet block or the fixing block. conflict.

By adopting the above technical solution, the fixed block and the magnet block can be arranged in cooperation, so that the installation frame can obtain good positioning during the movement process, so as to prevent the connecting rod from being deformed or broken due to excessive force in the waist-shaped hole.

beneficial effect

To sum up, the present application includes at least one of the following beneficial technical effects: 1. By adding a circuit board, the connecting wires for inputting and outputting current are electrically connected to the circuit board, and when the switching component connects the second output piece and the second output When the pin is connected and the contact component and the second output component are connected, the current is directly transmitted through the contact component, the second output component and the circuit board. Since the first resistance component and the second resistance component are not passed, the maximum current is output. .

2. The contact plate is connected by the elastic member, and the contact plate can swing through the cooperation of the movable plate and the movable groove. The pressing member squeezes the elastic member to drive the contact plate to swing, thereby realizing the connection between the contact plate and the output member. and disconnect.

3. By controlling the connecting rod to slide back and forth in the waist-shaped hole, the two energizing plates on the fixed rod are driven to connect the first output pin, the first output piece, the second output pin and the second output piece respectively. It is relatively simple, easy to install and operate, and has strong connection stability.

Description of drawings

FIG. 1 is a schematic structural diagram of a microswitch according to an embodiment of the present application after half of the casing is cut away.

FIG. 2 is a schematic structural diagram of the micro switch shown in FIG. 1 after removing the casing and the pressing member.

FIG. 3 is a schematic structural diagram of an input member according to an embodiment of the present application.

FIG. 4 is a schematic view of the structure in the front view of FIG. 2 .

Description of reference numerals: 1. Shell; 101, Upper casing; 102, Middle casing; 103, Lower casing; 2. Contact assembly; 201, Contact plate; 202, Active plate; 301, input plate; 302, connecting plate; 303, abutting plate; 304, reinforcing plate; 4, output assembly; 411, first output piece; 411-1, first vertical plate; 411-2, first 412, the first output pin; 421, the second output piece; 421-1, the second vertical board; 421-2, the second horizontal board; 422, the second output pin; 5, the pressing piece; 6 7, circuit board; 7, switch assembly; 701, installation frame; 702, electromagnet; 703, limit foot; 704, magnet block; 705, fixing block; 706, connecting rod; 707, fixing rod; 708, electrified plate; 8. The first resistance piece; 9. The second resistance piece; 10, the connecting wire; 11, the movable slot; 12, the through hole;

BEST MODE FOR CARRYING OUT THE INVENTION

The present application will be further described in detail below in conjunction with accompanying drawings 1-4.

The embodiment of the present application discloses a micro switch, which is mainly used in a car charging gun. Referring to FIGS. 1 and 2 , the micro switch includes an outer casing 1 , and the outer casing 1 is divided into an upper casing 101 , a middle casing 102 and a lower casing 103 that are snap-connected to each other. The middle casing 102 is fixedly connected with the contact assembly 2 made of copper silver-plated material, the input member 3 and the output assembly 4. The output assembly 4 includes a first output member 411 and a second output member that are fixedly connected to the middle casing 102. 421 , the contact assembly 2 and the input member 3 are always connected, and the upper housing 101 is provided with a pressing member 5 for controlling the connection between the contact assembly 2 and the first output member 411 or the second output member 421 .

1 and 2, the circuit board 6 is fixedly connected in the lower casing 103, and the output assembly 4 also includes a first output pin 412 that is fixedly plugged with the circuit board 6, and the first output pin 412 is located at the end of the first output member 411. directly below and at intervals. The output assembly 4 also includes a second output pin 422 that is fixedly plugged with the circuit board 6 , and the second output pin 422 is located directly below the second output member 421 and arranged at intervals. The first output pin 412 and the second output pin 422 are both electrically connected to the circuit board 6 , and the lower housing 103 is fixedly connected with the first output pin 412 and the first output piece 411 or the second output pin 422 and the second output piece. 421 is the switch component 7 that is conductively connected.

1 and 2 , the circuit board 6 is electrically connected with a first resistance element 8 and a second resistance element 9 , and one end of the circuit board 6 is electrically connected with two connection wires 10 for inputting and outputting current respectively.

When the switching element 7 connects the second output element 421 and the second output pin 422 and the contact element 2 and the second output element 421 are connected, the current is directly transmitted through the contact element 2 , the second output element 421 and the circuit board 6 , since it does not pass through the first resistance element 8 and the second resistance element 9, the maximum current is output.

When the switching component 7 connects the first output member 411 with the first output pin 412, and the contact component 2 is connected with the first output member 411, the current flows through the contact component 2, the first output member 411, the first output pin 412, The circuit board 6 and the first resistive element 8 conduct transmission, thereby outputting a medium-sized current.

When the switch assembly 7 connects the first output member 411 with the first output pin 412, and the contact assembly 2 and the second output member 421 are connected, or when the switch assembly 7 connects the second output member 421 with the second output pin 422 , and when the contact assembly 2 and the first output member 411 are connected, the current is transmitted through the circuit board 6 , the first resistance member 8 and the second resistance member 9 , thereby outputting a minimum current.

2 and 3, the input member 3 includes an input board 301 that is fixedly inserted at one end of the circuit board 6. Both sides of the input board 301 are integrally connected with connecting boards 302, and the two connecting boards 302 are both in a direction toward the contact assembly 2. Bend out setting. The ends of the two connecting plates 302 are integrally connected with abutting plates 303 , the two abutting plates 303 are bent in a direction away from the circuit board 6 , and the end faces of the two abutting plates 303 facing the contact assembly 2 are provided with movable Slot 11. In order to improve the structural stability of the connecting plates 302 , a reinforcing plate 304 is integrally connected between the two connecting plates 302 , and the reinforcing plate 304 is bent and bent toward the circuit board 6 .

The contact assembly 2 includes a contact plate 201 , and two movable plates 202 are integrally connected to one side of the contact plate 201 facing the abutting plate 303 . In conflict with the groove bottom of the corresponding movable groove 11 , the opening of the movable groove 11 on the side wall of the contact plate 201 is arranged in a "V" shape.

The input plate 301 and the contact plate 201 are provided with through holes 12 , and the contact assembly 2 further includes a tension spring 203 located directly below the pressing member 5 (refer to FIG. 1 ). The hooks at both ends of the tension spring 203 are respectively hooked into the two through holes 12 . By the pulling force of the tension spring 203, the two movable plates 202 are tightly abutted against the corresponding abutting plates 303, and in cooperation with the opening of the movable groove 11, when the tension spring 203 is pressed by the pressing member 5 in the vertical direction, it can The contact plate 201 is driven to swing up and down, thereby realizing the disconnection or connection of the contact plate 201 and the first output member 411 or the second output member 421 .

2 and 4 , the first output member 411 includes a first vertical plate 411-1 fixedly connected to the middle casing 102 (refer to FIG. 1 ), and the upper end of the first vertical plate 411-1 is integrally connected with the first vertical plate 411-1 and the first vertical plate 411-1. A vertical plate 411-1 is perpendicular to the first horizontal plate 411-2, and the first horizontal plate 411-2 is located on the side of the first vertical plate 411-1 away from the contact assembly 2 . The second output member 421 includes a second vertical plate 421-1 fixedly connected to the middle casing 102. The upper end of the second vertical plate 421-1 is integrally connected with a second vertical plate 421-1 perpendicular to the second vertical plate 421-1. A horizontal plate 421-2, the second horizontal plate 421-2 is located on the side of the second vertical plate 421-1 facing the contact assembly 2. The second horizontal plate 421-2 is located directly above the first horizontal plate 411-2, and the contact plate 201 is located between the first horizontal plate 411-2 and the second horizontal plate 421-2.

1, FIG. 4, the switch assembly 7 includes a mounting frame 701 slidably connected to the inner bottom wall of the lower housing 103, and an electromagnet 702 is fixedly connected in the mounting frame 701. Both sides of the lower end surface of the mounting frame 701 are fixedly connected with “L” shaped limiting feet 703 , and two chute 13 matching the corresponding limiting feet 703 are defined on the inner bottom wall of the lower casing 103 .

A magnet block 704 and a fixing block 705 are fixedly connected to the lower casing 103 on both sides of the electromagnet 702 in the sliding direction, respectively. The magnet blocks 704 repel each other and slide toward and interfere with the fixed block 705 . When the electromagnet 702 is not energized, the iron core in the electromagnet 702 and the magnet block 704 attract each other again, so that the electromagnet 702 slides toward the magnet block 704 and collides with it.

2 and 4, the circuit board 6 has a waist-shaped hole 14 running through it, the upper end surface of the mounting frame 701 is fixedly connected with a connecting rod 706 passing through the waist-shaped hole 14, and the upper end of the connecting rod 706 is fixedly connected with the connecting rod 706. the fixing rod 707. Both ends of the fixing rod 707 are fixedly connected with a power-on plate 708 made of copper-plated silver material. When the connecting rod 706 slides to both ends of the waist-shaped hole 14, the two power-on boards 708 are respectively connected with the first output pin 412, the first output pin 412 and the first output pin 412. The output piece 411 and the second output pin 422 and the second output piece 421 are in contact with each other, so that the first output pin 412 and the first output piece 411 or the second output pin 422 and the second output piece 421 are connected to each other.

Wherein, when the connecting rod 706 collides with both ends of the waist-shaped hole 14, the mounting frame 701 collides with the magnet block 704 or the fixing block 705 respectively, so as to ensure that the connecting rod 706 receives less force during the sliding process, so as to avoid its occurrence. deformed or fractured.

The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the scope of the present application. Inside.

Claims

A micro switch, comprising a casing (1), a contact assembly (2) made of conductive material, an input member (3) and an output assembly (4) are arranged in the casing (1), and the contact assembly (2) It is always connected with the input member (3), and the casing (1) is provided with a pressing member (5) that controls the connection or disconnection of the contact assembly (2) and the output assembly (4), and is characterized in that: the casing ( 1) A circuit board (6) is provided inside, the output assembly (4) includes a first output pin (412) and a second output pin (422) arranged on the circuit board (6), the circuit board (6) ) is electrically connected to the input element (3), the first output pin (412) and the second output pin (422), and the circuit board (6) is electrically connected with a first resistance element (8) and a second resistance element ( 9), the circuit board (6) is electrically connected with two connecting lines (10) for inputting and outputting current respectively;

The output assembly (4) further comprises a first output member (411) and a second output member (421) located above the first output pin (412) and the second output pin (422), respectively, and the contact assembly (2) ) is always connected to the first output piece (411) or the second output piece (421);

The casing (1) is provided with a switch assembly (7) that conducts connection between the first output pin (412) and the first output piece (411) or the second output pin (422) and the second output piece (421). ).
The micro switch according to claim 1, characterized in that: the input member (3) comprises an input board (301) arranged at one end of the circuit board (6), and both sides of the input board (301) are bent and arranged There is a connecting plate (302) protruding toward the contact assembly (2), the end of the connecting plate (302) is bent away from the circuit board (6) and provided with abutting plates (303), two abutting plates ( 303) The end faces facing the contact assembly (2) are provided with movable grooves (11);

The contact assembly (2) includes a contact plate (201), two movable plates (202) are arranged on one side of the contact plate (201), and the ends of the two movable plates (202) are inserted into corresponding movable grooves (11) and capable of swinging, an elastic member is connected between the contact plate (201) and the input plate (301).

3 . The micro switch according to claim 2 , wherein the elastic member is configured as a tension spring ( 203 ), and the input plate ( 301 ) and the contact plate ( 201 ) are both provided with through holes ( 12 ). 4 . ), the hooks of the two sections of the tension spring (203) are respectively hooked in the two through holes (12).
The micro switch according to claim 2, wherein the opening of the movable groove (11) on the side wall of the contact plate (201) is arranged in a "V" shape.
The micro switch according to claim 2, characterized in that: a reinforcing plate (304) is arranged between the two connecting plates (302), the reinforcing plate (304) is arranged in a curved manner, and the reinforcing plate (304) ) is bent away from the elastic member.
The micro switch according to claim 1, characterized in that: the casing (1) comprises a lower casing (103), a middle casing (102) and an upper casing (101), and the circuit board (6) Located at the upper end of the lower casing (103), the switching assembly (7) is arranged on the inner bottom wall of the lower casing (103).
The micro switch according to claim 6, characterized in that: the circuit board (6) has a waist-shaped hole (14) passing through it, and the switching assembly (7) comprises a connecting rod ( 706), the upper end of the connecting rod (706) is provided with a fixing rod (707) that is perpendicular to the connecting rod (706), and both ends of the fixing rod (707) are provided with energization plates made of conductive materials (708), when the connecting rod (706) slides to both ends of the waist-shaped hole (14), the two energizing plates (708) are respectively connected to the first output pin (412) and the first output piece (411) and a second output pin (422) and a second output piece (421).
The micro switch according to claim 7, characterized in that: the switching assembly (7) further comprises a mounting frame (701) slidably connected to the inner bottom wall of the lower casing (103), the mounting frame (701) ) is provided with an electromagnet (702), the connecting rod (706) is connected with the upper end face of the mounting frame (701), and the inner bottom wall of the lower casing (103) is arranged on one side of the electromagnet (702) There is a magnet block (704), and the magnet block (704) and the opposite side of the electromagnet (702) after electrification have opposite magnetic poles.
The micro switch according to claim 8, characterized in that: "L"-shaped limiting feet (703) are provided on both sides of the lower end surface of the mounting frame (701), and the lower housing (103) The inner bottom wall of ) is provided with two sliding grooves (13) matched with the limiting feet (703).
The micro switch according to claim 8, characterized in that: a fixing block (705) is arranged on the other side of the lower casing (103) relative to the magnet block (704) of the mounting frame (701), and the When the connecting rod (706) collides with both ends of the waist-shaped hole (14), the mounting frame (701) collides with the magnet block (704) or the fixing block (705) respectively.