A waterproof and explosion-proof microswitch

Abstract

The utility model relates to a waterproof and explosion-proof micro switch, and the key points of its technical solution are as follows: It includes: a housing; a switching component is arranged inside the housing; an elastic support is arranged inside the housing; a pressing component is arranged on the housing; a waterproof component adapted to the pressing component is arranged on the housing; the elastic support includes: a connecting spring and a movable piece; two support rod parts are symmetrically arranged at one end of the movable piece; both of the two support rod parts are abutted against the first contact end of the switching component; one end of the connecting spring is fixed to the first contact end of the switching component, and the other end is fixed to the movable piece; the pressing component is abutted against the side wall of the connecting spring; This application can ensure the connection stability of the pressing component, the movable piece and the connecting spring during pressing, and eliminate the quality hidden danger of the switch falling apart.

Description

Technical Field

[0001] This utility model relates to the field of micro switch technology, and more specifically, to a waterproof and explosion-proof micro switch. Background Technology

[0002] A micro switch is a switch that uses external mechanical force to act on an actuating spring through a transmission element such as a button. When the actuating spring moves to a critical point, it produces an instantaneous action, causing the moving contact at the end of the actuating spring to quickly connect or disconnect with the fixed contact.

[0003] Because moisture can easily enter the interior of household appliances such as ice makers, and the buttons are retractable and partially exposed in the microswitch housing, moisture can easily enter the microswitch through the gap between the button and the microswitch housing. This can easily cause corrosion to the internal components of the microswitch and affect the circuit conductivity.

[0004] For existing microswitches, refer to Chinese Utility Model Patent Application No. 2017206064913, which discloses a microswitch including a housing and a first terminal, a second terminal, a movable spring, an elastic connector, a button, and an annular waterproof cap disposed in the housing. The housing has a receiving space for accommodating the first terminal, the second terminal, the movable spring, and the elastic connector, a button slot communicating with the receiving space, and a waterproof groove communicating with the outer end of the button slot. The first terminal and the second terminal extend out of the housing respectively. The elastic connector is connected between the movable spring and the first terminal. The button is telescopically positioned in the button slot. The waterproof cap is tightly fitted on the button and embedded in the waterproof groove.

[0005] The aforementioned micro switch has a relatively long internal elastic support, resulting in poor sensitivity. Furthermore, the elastic support is only connected to the main body via a single rod. After prolonged use, the elastic support may fail to stably support the button, moving spring, and spring, posing a potential quality hazard of the switch falling apart. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a waterproof and explosion-proof micro switch to solve the above-mentioned technical problems.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a waterproof and explosion-proof micro switch, comprising: a housing; a switching component disposed within the housing; an elastic bracket disposed within the housing; a pressing component and a waterproof component adapted to the pressing component disposed on the housing; the elastic bracket comprising: a connecting spring and a movable spring piece; two support rods symmetrically disposed at one end of the movable spring piece; both support rods abutting against the first contact end of the switching component; one end of the connecting spring being fixed to the first contact end of the switching component, and the other end being fixed to one end of the movable spring piece; the pressing component abutting against the side wall of the connecting spring; when the pressing component is pressed, the other end of the movable spring piece abutting against the second contact end of the switching component; when the pressing component is not pressed, the other end of the movable spring piece abutting against the third contact end of the switching component.

[0008] Specifically, when the pressing component is compressed, it compresses the connecting spring. The middle part of the connecting spring is stressed and pulls the movable spring piece at one end of the connecting spring. Under the pulling action of the connecting spring, the two support rods at one end of the movable spring piece rotate around the contact point with the switching component, causing the movable spring piece to separate from the third contact end of the switching component and abut against the second contact end. Because the movable spring piece is supported by two support rods, when the pressing component is compressed, the two support rods deform synchronously and provide support for the movable spring piece. This ensures the connection stability of the pressing component, movable spring piece, and connecting spring during pressing, eliminating the quality risk of the switch falling apart.

[0009] Optionally, the switching component includes: a common terminal, a normally open terminal, and a normally closed terminal; the common terminal, the normally open terminal, and the normally closed terminal are sequentially disposed on the housing; the first contact end is the common terminal, the second contact end is the normally open terminal, and the third contact end is the normally closed terminal.

[0010] Specifically, when the pressing component is compressed, it pushes the connecting spring, which in turn moves the movable spring piece. At this point, the support rod deforms, and one end of the movable spring piece separates from the normally closed terminal. After moving a certain distance, the other end of the movable spring piece contacts the normally open terminal, at which point the common terminal is connected to the normally open terminal through the movable spring piece. When the compression of the pressing component stops, the connecting spring returns to its original position, and the support rod moves the movable spring piece back to its original position. The other end of the movable spring piece separates from the normally open terminal and contacts the normally closed terminal, at which point the common terminal is connected to the normally closed terminal through the movable spring piece. The common terminal is connected to the current input terminal, and the normally open and normally closed terminals are connected to the two current output terminals, thus switching the circuit's on / off state when the pressing component is compressed.

[0011] Optionally, the common terminal includes: a wiring block and a connecting block; one end of the wiring block extends out of the housing, and the other end is disposed inside the housing; one end of the connecting spring is fixed to the wiring block; the connecting block is disposed inside the housing, and one end of the connecting block is fixed to the wiring block; a limiting groove is formed on the connecting block, and the support rod abuts against the limiting groove.

[0012] Specifically, the terminal block is used to connect to the external circuit. The terminal block extends into the housing and one end of the connecting spring is fixed on the terminal block. The support rod is in the limiting groove of the connecting block. The terminal block can connect to the moving spring piece in sequence through the connecting block and the support rod, so that the terminal block can conduct normally open or normally closed terminals through the connecting block and the moving spring piece.

[0013] Optionally, a normally open contact adapted to the moving spring is provided on the normally open terminal.

[0014] Specifically, the moving spring contacts the normally open contact, thus connecting the fixed terminal and the normally open terminal. By setting a normally open contact on the normally open terminal, the contact sensitivity between the moving spring and the normally open terminal can be improved.

[0015] Optionally, a normally closed contact adapted to the moving spring is provided on the normally closed terminal.

[0016] Specifically, the moving spring contacts the normally closed contact, thus connecting the fixed terminal and the normally closed terminal. By setting a normally closed contact on the normally closed terminal, the contact sensitivity between the moving spring and the normally closed terminal can be improved.

[0017] Optionally, the moving spring is provided with a spring contact point.

[0018] Specifically, by setting spring contacts, the moving spring can contact the normally open and normally closed contacts respectively through the spring contacts, further improving the conductivity between the moving spring and the normally open and normally closed terminals.

[0019] Optionally, the pressing assembly includes: a transmission column; the waterproof assembly is disposed on the transmission column; a pressing head is disposed at one end of the transmission column, and a guide block is disposed at the other end of the transmission column; a guide groove adapted to the guide block is formed on the housing; the guide block abuts against the connecting spring.

[0020] Specifically, after the pressing head is squeezed, it pushes the transmission column into the housing. The guide block slides in the guide groove and pushes the connecting spring, thereby switching the on / off state of the micro switch. Furthermore, the guide groove and guide block ensure smoother movement of the transmission column.

[0021] Optionally, a protrusion is provided on the guide block.

[0022] Specifically, the bump is a raised boss in the middle. By setting the bump, it is easy to squeeze the connecting spring and make the connecting spring deform quickly, thereby improving the switching sensitivity of the micro switch.

[0023] Optionally, the waterproof component includes: a sealant layer and a sealing ring; the sealant layer seals the connection between the housing and the switching component; one end of the sealing ring is fitted onto the transmission column; the other end of the sealing ring is embedded in the housing.

[0024] Specifically, one end of the sealing ring is fitted onto the outside of the transmission column, and the other end of the sealing ring is embedded into the housing. The sealing ring is then fixed using a hot-riveting process, thereby sealing the connection between the transmission column and the housing. Sealant is then injected into the gaps in the housing and at the connection between the housing and the switching assembly to form a sealant layer. This seals the gaps in the housing and at the connection between the housing and the switching assembly, preventing moisture or dust from entering the microswitch through the gaps between the transmission column and the housing, the housing itself, and the switching assembly, thus improving the waterproof reliability of the microswitch.

[0025] In summary, this utility model has the following beneficial effects:

[0026] When the pressing component is compressed, it compresses the connecting spring. The middle part of the connecting spring is stressed and pulls the movable spring piece at one end of the connecting spring. Under the pulling action of the connecting spring, the two support rods at one end of the movable spring piece rotate around the point where it abuts against the switching component, causing the movable spring piece to separate from the third contact end of the switching component and abut against the second contact end. Because the movable spring piece is supported by two support rods, when the pressing component is compressed, the two support rods deform synchronously and provide support for the movable spring piece. This ensures the connection stability of the pressing component, movable spring piece, and connecting spring during pressing, eliminating the quality risk of the switch falling apart. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0028] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the present utility model;

[0029] Figure 3 This is an exploded structural diagram of an embodiment of the present invention.

[0030] In the diagram: 1. Housing; 2. Switching assembly; 21. Common terminal; 211. Wiring block; 212. Connecting block; 22. Normally open terminal; 23. Normally closed terminal; 3. Elastic bracket; 31. Connecting spring; 32. Moving spring; 4. Pressing assembly; 41. Transmission column; 42. Pressing head; 43. Guide block; 5. Waterproof assembly; 51. Sealing layer; 52. Sealing ring; 6. Support rod; 7. Limiting groove; 8. Normally open contact; 9. Normally closed contact; 10. Spring contact; 11. Guide groove; 12. Protrusion. Detailed Implementation

[0031] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Example 1

[0035] This embodiment provides a waterproof and explosion-proof micro switch, such as... Figure 1-3As shown, it includes: a housing 1; a switching assembly 2 disposed inside the housing 1; an elastic bracket 3 disposed inside the housing 1; a pressing assembly 4 and a waterproof assembly 5 adapted to the pressing assembly 4 disposed on the housing 1; the elastic bracket 3 includes: a connecting spring 31 and a movable spring piece 32; two support rods 6 are symmetrically arranged at one end of the movable spring piece 32; both support rods 6 abut against the first contact end of the switching assembly 2; one end of the connecting spring 31 is fixed to the first contact end of the switching assembly 2, and the other end is fixed to one end of the movable spring piece 32; the pressing assembly 4 abuts against the side wall of the connecting spring 31; when the pressing assembly 4 is pressed, the other end of the movable spring piece 32 abuts against the second contact end of the switching assembly 2; when the pressing assembly 4 is not pressed, the other end of the movable spring piece 32 abuts against the third contact end of the switching assembly 2.

[0036] Specifically, when the pressing component 4 is compressed, it compresses the connecting spring 31. The middle part of the connecting spring 31 is stressed and pulls the movable spring piece 32 at one end of the connecting spring 31. Under the pulling action of the connecting spring 31, the two support rods 6 at one end of the movable spring piece 32 rotate around the contact point with the switching component 2, causing the movable spring piece 32 to separate from the third contact end of the switching component 2 and abut against the second contact end. Since the movable spring piece 32 is supported by the two support rods 6, when the pressing component 4 is compressed, the two support rods 6 deform synchronously and provide support for the movable spring piece 32. This ensures the connection stability of the pressing component 4, the movable spring piece 32, and the connecting spring 31 when pressed, eliminating the quality risk of the switch falling apart.

[0037] Both support rods are arc-shaped. When the pressing component 4 is pressed, the arc-shaped support rod is more stable in bending deformation than the flat support rod, and the deformation position is relatively fixed. This can prevent breakage caused by deformation at the connection position between the support rod and the moving spring, and further improve the connection stability of the pressing component, the moving spring and the connecting spring.

[0038] Optionally, the switching component 2 includes: a common terminal 21, a normally open terminal 22, and a normally closed terminal 23; the common terminal 21, the normally open terminal 22, and the normally closed terminal 23 are sequentially arranged on the housing 1; wherein, the first contact end is the common terminal 21, the second contact end is the normally open terminal 22, and the third contact end is the normally closed terminal 23.

[0039] Specifically, when the pressing component 4 is compressed, it pushes the connecting spring 31, which in turn moves the movable spring piece 32. At this time, the support rod 6 deforms, and one end of the movable spring piece 32 separates from the normally closed terminal 23. After moving a certain distance, the other end of the movable spring piece 32 contacts the normally open terminal 22, at which point the common terminal 21 is connected to the normally open terminal 22 through the movable spring piece 32. After the compression of the pressing component 4 stops, the connecting spring 31 returns to its original position, and the support rod 6 moves the movable spring piece 32 back to its original position. The other end of the movable spring piece 32 separates from the normally open terminal 22 and contacts the normally closed terminal 23, at which point the common terminal 21 is connected to the normally closed terminal 23 through the movable spring piece 32. The common terminal 21 is connected to the current input terminal, and the normally open terminal 22 and normally closed terminal 23 are connected to the two current output terminals, thus switching the circuit's on / off state after the pressing component 4 is compressed.

[0040] The common terminal, normally open terminal and normally closed terminal are all provided with through holes. The through holes can reduce the weight of the common terminal, normally open terminal and normally closed terminal and facilitate the connection of wires to the common terminal, normally open terminal and normally closed terminal.

[0041] Optionally, the common terminal 21 includes: a wiring block 211 and a connecting block 212; one end of the wiring block 211 extends out of the housing 1, and the other end is disposed inside the housing 1; one end of the connecting spring 31 is fixed to the wiring block 211; the connecting block 212 is disposed inside the housing 1, and one end of the connecting block 212 is fixed to the wiring block 211; a limiting groove 7 is provided on the connecting block 212, and the support rod 6 abuts against the limiting groove 7.

[0042] Specifically, the terminal block 211 is used to connect to an external circuit, extending into the housing 1, and fixing one end of the connecting spring 31 to the terminal block 211, and making the support rod 6 in the limiting groove 7 of the connecting block 212. The terminal block 211 can be connected to the movable spring piece 32 in sequence through the connecting block 212 and the support rod 6, so that the terminal block 211 can conduct normally open terminal 22 or normally closed terminal 23 through the connecting block 212 and the movable spring piece 32.

[0043] Optionally, the pressing assembly 4 includes: a transmission column 41; a waterproof assembly 5 disposed on the transmission column 41; a pressing head 42 disposed at one end of the transmission column 41 and a guide block 43 disposed at the other end of the transmission column 41; a guide groove 11 adapted to the guide block 43 is provided on the housing 1; the guide block 43 abuts against the connecting spring 31.

[0044] Specifically, after the pressing head is squeezed, it pushes the transmission column into the housing. The guide block slides in the guide groove and pushes the connecting spring, thereby switching the on / off state of the micro switch. Furthermore, the guide groove and guide block ensure smoother movement of the transmission column.

[0045] Optionally, the waterproof component 5 includes: a sealant layer 51 and a sealing ring 52; the sealant layer 51 seals the connection between the housing 1 and the switching component 2; one end of the sealing ring 52 is fitted onto the transmission column 41; the other end of the sealing ring 52 is embedded in the housing 1.

[0046] Specifically, one end of the sealing ring 52 is fitted onto the outside of the transmission column 41, and the other end of the sealing ring 52 is embedded into the housing 1. The sealing ring 52 is then fixed using a hot riveting process, thereby sealing the connection between the transmission column 41 and the housing 1. Sealant is then injected into the gaps in the housing 1 and the connection between the housing 1 and the switching assembly 2 to form a sealant layer 51. This seals the gaps in the housing 1 and the connection between the housing 1 and the switching assembly 2, preventing moisture or dust from entering the microswitch through the gaps between the transmission column 41 and the housing 1, the housing 1, and the switching assembly 2, thus improving the waterproof reliability of the microswitch.

[0047] Example 2

[0048] This embodiment provides a waterproof and explosion-proof micro switch, such as... Figure 1-3 As shown, it includes: a housing 1; a switching assembly 2 disposed inside the housing 1; an elastic bracket 3 disposed inside the housing 1; a pressing assembly 4 and a waterproof assembly 5 adapted to the pressing assembly 4 disposed on the housing 1; the elastic bracket 3 includes: a connecting spring 31 and a movable spring piece 32; two support rods 6 are symmetrically arranged at one end of the movable spring piece 32; both support rods 6 abut against the first contact end of the switching assembly 2; one end of the connecting spring 31 is fixed to the first contact end of the switching assembly 2, and the other end is fixed to one end of the movable spring piece 32; the pressing assembly 4 abuts against the side wall of the connecting spring 31; when the pressing assembly 4 is pressed, the other end of the movable spring piece 32 abuts against the second contact end of the switching assembly 2; when the pressing assembly 4 is not pressed, the other end of the movable spring piece 32 abuts against the third contact end of the switching assembly 2.

[0049] Specifically, when the pressing component 4 is compressed, it compresses the connecting spring 31. The middle part of the connecting spring 31 is stressed and pulls the movable spring piece 32 at one end of the connecting spring 31. Under the pulling action of the connecting spring 31, the two support rods 6 at one end of the movable spring piece 32 rotate around the contact point with the switching component 2, causing the movable spring piece 32 to separate from the third contact end of the switching component 2 and abut against the second contact end. Since the movable spring piece 32 is supported by the two support rods 6, when the pressing component 4 is compressed, the two support rods 6 deform synchronously and provide support for the movable spring piece 32. This ensures the connection stability of the pressing component 4, the movable spring piece 32, and the connecting spring 31 when pressed, eliminating the quality risk of the switch falling apart.

[0050] Both support rods are arc-shaped. When the pressing component 4 is pressed, the arc-shaped support rod is more stable in bending deformation than the flat support rod, and the deformation position is relatively fixed. This can prevent breakage caused by deformation at the connection position between the support rod and the moving spring, and further improve the connection stability of the pressing component, the moving spring and the connecting spring.

[0051] Optionally, the switching component 2 includes: a common terminal 21, a normally open terminal 22, and a normally closed terminal 23; the common terminal 21, the normally open terminal 22, and the normally closed terminal 23 are sequentially arranged on the housing 1; wherein, the first contact end is the common terminal 21, the second contact end is the normally open terminal 22, and the third contact end is the normally closed terminal 23.

[0052] Specifically, when the pressing component 4 is compressed, it pushes the connecting spring 31, which in turn moves the movable spring piece 32. At this time, the support rod 6 deforms, and one end of the movable spring piece 32 separates from the normally closed terminal 23. After moving a certain distance, the other end of the movable spring piece 32 contacts the normally open terminal 22, at which point the common terminal 21 is connected to the normally open terminal 22 through the movable spring piece 32. After the compression of the pressing component 4 stops, the connecting spring 31 returns to its original position, and the support rod 6 moves the movable spring piece 32 back to its original position. The other end of the movable spring piece 32 separates from the normally open terminal 22 and contacts the normally closed terminal 23, at which point the common terminal 21 is connected to the normally closed terminal 23 through the movable spring piece 32. The common terminal 21 is connected to the current input terminal, and the normally open terminal 22 and normally closed terminal 23 are connected to the two current output terminals, thus switching the circuit's on / off state after the pressing component 4 is compressed.

[0053] The common terminal, normally open terminal and normally closed terminal are all provided with through holes. The through holes can reduce the weight of the common terminal, normally open terminal and normally closed terminal and facilitate the connection of wires to the common terminal, normally open terminal and normally closed terminal.

[0054] Optionally, the common terminal 21 includes: a wiring block 211 and a connecting block 212; one end of the wiring block 211 extends out of the housing 1, and the other end is disposed inside the housing 1; one end of the connecting spring 31 is fixed to the wiring block 211; the connecting block 212 is disposed inside the housing 1, and one end of the connecting block 212 is fixed to the wiring block 211; a limiting groove 7 is provided on the connecting block 212, and the support rod 6 abuts against the limiting groove 7.

[0055] Specifically, the terminal block 211 is used to connect to an external circuit, extending into the housing 1, and fixing one end of the connecting spring 31 to the terminal block 211, and making the support rod 6 in the limiting groove 7 of the connecting block 212. The terminal block 211 can be connected to the movable spring piece 32 in sequence through the connecting block 212 and the support rod 6, so that the terminal block 211 can conduct normally open terminal 22 or normally closed terminal 23 through the connecting block 212 and the movable spring piece 32.

[0056] Optionally, a normally open contact 8 adapted to the moving spring 32 is provided on the normally open terminal 22.

[0057] Specifically, the movable spring 32 contacts the normally open contact 8, thus connecting the fixed terminal and the normally open terminal 22. By providing the normally open contact 8 on the normally open terminal 22, the contact sensitivity between the movable spring 32 and the normally open terminal 22 can be improved.

[0058] Optionally, a normally closed contact 9 adapted to the moving spring 32 is provided on the normally closed terminal 23.

[0059] Specifically, the movable spring 32 contacts the normally closed contact 9, thus connecting the fixed terminal and the normally closed terminal 23. By providing the normally closed contact 9 on the normally closed terminal 23, the contact sensitivity between the movable spring 32 and the normally closed terminal 23 can be improved.

[0060] Optionally, the movable spring 32 is provided with a spring contact 10.

[0061] Specifically, by setting the spring contact 10, the moving spring 32 can contact the normally open contact 8 and the normally closed contact 9 through the spring contact 10, which further improves the conduction performance of the moving spring 32 with the normally open terminal 22 and the normally closed terminal 23.

[0062] Optionally, the pressing assembly 4 includes: a transmission column 41; a waterproof assembly 5 disposed on the transmission column 41; a pressing head 42 disposed at one end of the transmission column 41 and a guide block 43 disposed at the other end of the transmission column 41; a guide groove 11 adapted to the guide block 43 is provided on the housing 1; the guide block 43 abuts against the connecting spring 31.

[0063] Specifically, after the pressing head 42 is pressed, it pushes the transmission column 41 into the housing 1, and the guide block 43 slides in the guide groove 11, pushing the connecting spring 31, thereby switching the on / off state of the micro switch. Furthermore, by setting the guide groove 11 and the guide block 43, the movement of the transmission column 41 can be made more stable.

[0064] Optionally, a protrusion 12 is provided on the guide block 43.

[0065] Specifically, the protrusion 12 is a raised boss in the middle. By setting the protrusion 12, it is easy to squeeze the connecting spring 31 and make the connecting spring 31 deform quickly, thereby improving the switching sensitivity of the micro switch.

[0066] Optionally, the waterproof component 5 includes: a sealant layer 51 and a sealing ring 52; the sealant layer 51 seals the connection between the housing 1 and the switching component 2; one end of the sealing ring 52 is fitted onto the transmission column 41; the other end of the sealing ring 52 is embedded in the housing 1.

[0067] Specifically, one end of the sealing ring 52 is fitted onto the outside of the transmission column 41, and the other end of the sealing ring 52 is embedded into the housing 1. The sealing ring 52 is then fixed using a hot riveting process, thereby sealing the connection between the transmission column 41 and the housing 1. Sealant is then injected into the gaps in the housing 1 and the connection between the housing 1 and the switching assembly 2 to form a sealant layer 51. This seals the gaps in the housing 1 and the connection between the housing 1 and the switching assembly 2, preventing moisture or dust from entering the microswitch through the gaps between the transmission column 41 and the housing 1, the housing 1, and the switching assembly 2, thus improving the waterproof reliability of the microswitch.

[0068] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A waterproof and explosion-proof micro switch, characterized in that, include: case; A switching component is provided inside the housing; an elastic support is also provided inside the housing; A pressing assembly and a waterproof assembly adapted to the pressing assembly are provided on the housing; the elastic bracket includes a connecting spring and a movable spring piece; two support rods are symmetrically arranged at one end of the movable spring piece; both support rods abut against the first contact end of the switching assembly; one end of the connecting spring is fixed to the first contact end of the switching assembly, and the other end is fixed to one end of the movable spring piece; the pressing assembly abuts against the side wall of the connecting spring; when the pressing assembly is pressed, the other end of the movable spring piece abuts against the second contact end of the switching assembly; when the pressing assembly is not pressed, the other end of the movable spring piece abuts against the third contact end of the switching assembly.

2. The waterproof and explosion-proof micro switch according to claim 1, characterized in that, The switching component includes a common terminal, a normally open terminal, and a normally closed terminal; the common terminal, normally open terminal, and normally closed terminal are sequentially disposed on the housing; the first contact end is the common terminal, the second contact end is the normally open terminal, and the third contact end is the normally closed terminal.

3. A waterproof and explosion-proof micro switch according to claim 2, characterized in that, The common terminal includes: a wiring block and a connecting block; one end of the wiring block extends out of the housing, and the other end is disposed inside the housing; one end of the connecting spring is fixed to the wiring block; the connecting block is disposed inside the housing, and one end of the connecting block is fixed to the wiring block; a limiting groove is formed on the connecting block, and the support rod abuts against the limiting groove.

4. A waterproof and explosion-proof micro switch according to claim 2, characterized in that, A normally open contact adapted to the moving spring is provided on the normally open terminal.

5. A waterproof and explosion-proof micro switch according to claim 2, characterized in that, A normally closed contact adapted to the moving spring is provided on the normally closed terminal.

6. A waterproof and explosion-proof micro switch according to claim 2, characterized in that, The moving spring is provided with spring contact points.

7. A waterproof and explosion-proof micro switch according to claim 1, characterized in that, The pressing assembly includes: a transmission column; a waterproof component disposed on the transmission column; a pressing head disposed at one end of the transmission column and a guide block disposed at the other end of the transmission column; a guide groove adapted to the guide block being formed on the housing; and the guide block abutting against the connecting spring.

8. A waterproof and explosion-proof micro switch according to claim 7, characterized in that, A protrusion is provided on the guide block.

9. A waterproof and explosion-proof micro switch according to claim 7, characterized in that, The waterproof component includes: a sealant layer and a sealing ring; the sealant layer seals the connection between the housing and the switching component; one end of the sealing ring is fitted onto the transmission column; the other end of the sealing ring is embedded in the housing.

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