Waterproof switch based on hall principle

Abstract

The utility model provides a waterproof switch based on hall principle, including PCB board, hall sensor, casing, key elastic sheet, button and apron, hall sensor installs on the PCB board, the lower extreme of casing is fixed to the PCB board, the upper extreme of casing is equipped with the mounting groove along the length direction, is equipped with a plurality of mounting holes in the mounting groove, button and key elastic sheet are sequentially embedded in the mounting hole, button inside is equipped with magnet, magnet and hall sensor are set up one by one in correspondence with up and down, the central axis of magnet coincides with the central axis of hall sensor, apron is equipped with a plurality of through -hole, and apron covers on the mounting groove through button and through -hole cooperation, adopt hall sensor and button magnet cooperation, reset action of combining elastic sheet, ensure that switch pressing responds quickly, resets in time, through the slot type sealing design of apron and casing, block the water vapor, dust into the switch inside, improve waterproof dustproof capacity.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a waterproof switch based on the Hall effect principle. Background Technology

[0002] In the field of smart homes, switches are widely used as basic control components. In existing technologies, switch button panels adopt traditional mechanical structure designs, and there are unavoidable gaps between the buttons and the panel. These gaps can easily allow dust and moisture to enter the switch, affecting its sensitivity and lifespan. In severe cases, they can cause internal circuit short circuits, leading to malfunctions and failing to meet the equipment's protection performance requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a waterproof switch based on the Hall effect principle, which uses a Hall sensor in conjunction with a button magnet to improve waterproof and dustproof capabilities and ensure that the switch responds quickly and resets promptly when pressed.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A waterproof switch based on the Hall effect principle is characterized by comprising a PCB board, a Hall sensor, a housing, a button spring, a button, and a cover plate. The Hall sensor is mounted on the PCB board, which is fixed to the lower end of the housing. The upper end of the housing has a mounting groove along its length, and the mounting groove has several mounting holes. The button and the button spring are sequentially embedded in the mounting holes. The button contains a magnet, which is arranged in a one-to-one correspondence with the Hall sensor. The central axis of the magnet coincides with the central axis of the Hall sensor. The cover plate has several through holes, and the cover plate covers the mounting groove through the button and the through holes.

[0005] Furthermore, a sealant is provided between the cover plate and the housing, and the sealant is arranged around the outer edge of the mounting groove.

[0006] Furthermore, the button spring is made of elastic dome metal.

[0007] Furthermore, the PCB board is fixedly connected to the lower end of the housing by screws.

[0008] Furthermore, the lower end of the housing is provided with a sensor mounting slot, and the sensor mounting slot and the Hall sensor are arranged in a one-to-one correspondence.

[0009] This utility model of waterproof switch uses a Hall sensor and a button magnet in combination with the reset function of the spring to ensure that the switch responds quickly and resets in time when pressed, avoiding false triggering or triggering delay, and ensuring the working performance of the switch. This invention solves the problem of obvious gaps in traditional switch panels by using a groove-shaped sealing design between the cover plate and the housing, thus preventing moisture and dust from entering the switch and improving its waterproof and dustproof capabilities. Attached Figure Description

[0010] Figure 1 This is a side sectional view of the present invention; Figure 2 This is a disassembled structural diagram of the present invention.

[0011] Figure label: 1. PCB board, 2. Hall sensor, 3. Housing, 4. Button spring, 5. Button 6. Cover plate, 7. Mounting slot, 8. Mounting hole, 9. Magnet, 10. Through hole, 11. Sensor mounting slot. Detailed Implementation

[0012] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0013] This embodiment discloses a waterproof switch based on the Hall effect principle, such as... Figure 1 As shown, it includes a PCB board 1, a Hall sensor 2, a housing 3, a button spring 4, a button 5, and a cover plate 6. The Hall sensor 2 is mounted on the PCB board 1. The PCB board 1 is fixedly connected to the lower end of the housing 3 by screws. The upper end of the housing 3 is provided with a mounting groove 7 along the length direction, and the mounting groove 7 is provided with four mounting holes 8.

[0014] like Figure 2 As shown, four buttons 5 and four button springs 4 are sequentially embedded in the mounting holes 8. The button springs 4 are made of elastic dome switches. Each button 5 has a magnet 9 inside. The magnets 9 and Hall sensors 2 are arranged in a one-to-one correspondence. The central axis of the four magnets 9 coincides with the central axis of the four Hall sensors 2. The lower end of the housing 3 is provided with a sensor mounting groove 11. The sensor mounting groove 11 and Hall sensors 2 are arranged in a one-to-one correspondence.

[0015] The cover plate 6 is provided with several through holes 10. The cover plate 6 covers the mounting groove 7 through the cooperation of the button 5 and the through holes 10. A sealant is provided between the cover plate 6 and the housing 3, and the sealant is set around the outer edge of the mounting groove 7.

[0016] This embodiment uses the Hall effect principle to implement switch trigger control, as detailed below: When button 5 is pressed, the magnet 9 inside button 5 moves downward synchronously and approaches the Hall sensor 2 on PCB board 1. After the Hall sensor 2 detects the change in magnetic field strength, it converts the magnetic signal into an electrical signal and transmits it to the control circuit to realize the conduction of the switch. When button 5 is released, the elasticity of button spring 4 causes button 5 and magnet 9 to reset. Hall sensor 2 can no longer detect a valid magnetic signal, and the switch is turned off.

[0017] The waterproof switch in this embodiment includes the following steps during assembly: The Hall sensor 2 is soldered onto the PCB board 1, and the PCB board 1 is fixed to the lower end of the housing 3 with screws; Insert the button spring 4 and the button 5 into the mounting holes 8 in the mounting slot 7 in sequence; Apply sealant to the outer edge of the mounting groove 7 on the upper end face of the housing 3, cover the mounting groove 7 with the cover plate 6 through the through hole 10 and the button 5, press the cover plate 6 to make it fit tightly with the housing 3, and complete the assembly after the sealant has cured.

[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A waterproof switch based on the Hall effect principle, characterized in that, The device includes a PCB board (1), a Hall sensor (2), a housing (3), a button spring (4), a button (5), and a cover plate (6). The Hall sensor (2) is mounted on the PCB board (1), which is fixed to the lower end of the housing (3). The upper end of the housing (3) has a mounting groove (7) along its length. The mounting groove (7) has several mounting holes (8). The button (5) and the button spring (4) are sequentially embedded in the mounting holes (8). The button (5) has a magnet (9) inside. The magnet (9) and the Hall sensor (2) are arranged in a one-to-one correspondence. The central axis of the magnet (9) coincides with the central axis of the Hall sensor (2). The cover plate (6) has several through holes (10). The cover plate (6) covers the mounting groove (7) through the button (5) and the through holes (10).

2. The waterproof switch based on the Hall effect principle according to claim 1, characterized in that, A sealant is provided between the cover plate (6) and the housing (3), and the sealant is arranged around the outer edge of the mounting groove (7).

3. The waterproof switch based on the Hall effect principle according to claim 1, characterized in that, The button spring (4) is made of elastic dome.

4. The waterproof switch based on the Hall effect principle according to claim 1, characterized in that, The PCB board (1) is fixedly connected to the lower end of the housing (3) by screws.

5. The waterproof switch based on the Hall effect principle according to claim 1, characterized in that, The lower end of the housing (3) is provided with a sensor mounting slot (11), and the sensor mounting slot (11) and the Hall sensor (2) are arranged in a one-to-one correspondence.

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