Waterproof and dustproof magnetic switch

Abstract

The utility model discloses a waterproof and dustproof magnetic switch, and relates to the technical field of magnetic switches. The device comprises a shell, a top cover is arranged at the top of the shell, a connecting wire is arranged on one side of the shell, and a protection assembly is arranged on one side of the shell and located on the outer side of the connecting wire. According to the utility model, a basic sealing layer is formed through threaded connection of the threaded cylinder and the sealing cylinder, an internal core sealing environment of the magnetic switch is constructed in combination with physical isolation of the protective cylinder, and connection tightness of the top cover and the shell is significantly improved and gap permeation risks are reduced through the fitting design of the sealing clamping frame and the sealing plate; the flaring end of the necking sleeve is fixed to the inner wall of the sealing cylinder, the necking end wraps the structure of the connecting wire, the gap between the connecting wire and the sealing cylinder is blocked in a targeted mode, dust and water stains are effectively prevented from invading the path along the connecting wire, the multiple sealing structures are linked with one another, and the possibility of dust and water stain permeation is reduced to the maximum extent.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic switch technology, and in particular relates to a waterproof and dustproof magnetic switch. Background Technology

[0002] A magnetic switch is a circuit switching device that uses magnetic field signals for control. Its core working principle is to use the magnetic field generated by a permanent magnet or electromagnet to cause the magnetic components inside the switch (such as reed switches, Hall elements, etc.) to act, thereby realizing the on / off control of the circuit.

[0003] However, existing magnetic switches have significant shortcomings in terms of waterproof and dustproof performance. Since switches are usually installed in various environments, they are inevitably affected by dust in the air and external water stains. The housing sealing structure of existing magnetic switches mostly adopts simple sealing rings or glue seals. During long-term use, this sealing method is prone to problems such as aging of the sealing rings and cracking of the glue seals, which can lead to a decline in sealing performance. Dust particles in the air can enter the inside of the switch through tiny gaps. This dust may adhere to the magnetic components or circuit contacts, affecting the normal operation of the magnetic components and causing unstable or even malfunctioning switch signal transmission.

[0004] To address these issues, we provide a waterproof and dustproof magnetic switch. Utility Model Content

[0005] The purpose of this invention is to provide a waterproof and dustproof magnetic switch. By combining the protective components and the fastening components, it solves the problem that the existing magnetic switches have significant deficiencies in waterproof and dustproof performance. After the sealing material ages, dust particles in the air and external water stains can enter the switch through tiny gaps, causing unstable or even malfunctioning switch signal transmission.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a waterproof and dustproof magnetic switch, comprising a housing, a top cover on the top of the housing, a connecting wire on one side of the housing, a protective component on one side of the housing and outside the connecting wire, a fastening component on the other side of the housing, a circuit board at the bottom of the inner cavity of the housing, a protective cylinder on one side of the protective cylinder and a threaded cylinder on one side of the protective cylinder, a sealing cylinder threadedly connected to the surface of the threaded cylinder, a sealing ring on one side of the surface of the sealing cylinder, and an upper fastening plate on one side of the upper fastening plate and a lower fastening plate on one side of the housing. A fastening screw is threaded through the surface of the upper fastening plate, a semi-circular retaining strip is fixedly connected to the top of the lower fastening plate, and a semi-circular groove is formed at the bottom of the upper fastening plate.

[0008] The present invention is further configured such that a groove is provided on one side of the top of the housing, a sealing plate is fixedly connected to the bottom of the groove cavity, and a sealing frame is fixedly connected to one side of the bottom of the top cover. The inner wall of the sealing frame is in contact with the surface of the sealing plate. The sealing frame is locked onto the surface of the sealing plate as the top cover is pressed against the housing. The sealing structure composed of the sealing frame and the sealing plate can improve the tightness of the connection between the top cover and the housing.

[0009] The present invention is further configured such that a sealing frame is fixedly connected to the inner cavity of the top cover, the bottom of the sealing frame is in contact with the inner wall of the shell, and when the top cover is stuck on the top of the shell, the sealing frame in its inner cavity will cover the opening at the top of the shell, thereby further sealing the inner cavity of the shell, and the double sealing space has a better dustproof and waterproof effect.

[0010] The present invention is further configured such that an annular groove is provided on the side of the protective cylinder away from the shell, and an annular plate is fixedly connected to one side of the sealing ring. The surface of the annular plate is movably connected to the inner cavity of the annular groove. As the sealing ring rotates and approaches the protective cylinder, the annular plate is embedded into the inner cavity of the annular groove, which can improve the sealing performance between the sealing ring and the surface of the protective cylinder.

[0011] The present invention is further configured such that a constriction sleeve is fixedly connected to the inner wall of the sealing cylinder, the inner wall of the constriction sleeve is in close contact with the surface of the connecting wire, the flared end of the constriction sleeve is fixedly connected to the inner wall of the sealing cylinder, and its constricted end is wrapped around the surface of the connecting wire, which can further prevent dust and water stains from seeping in from the gap between the sealing cylinder and the connecting wire.

[0012] The present invention is further configured such that a sealing sleeve is fixedly connected to the inner wall of the protective cylinder, the inner wall of the sealing sleeve is in close contact with the surface of the connecting wire, and the sealing sleeve in the inner cavity of the protective cylinder serves as the last sealing structure inside the protective cylinder. As the connecting wire passes through the protective cylinder, the sealing sleeve wraps around the surface of the connecting wire, preventing external dust and water stains from seeping in from the connection gap between the connecting wire and the protective cylinder to the greatest extent.

[0013] The present invention is further configured such that a lower sealing strip is fixedly connected to both the front and back of the housing, and an upper sealing strip is fixedly connected to both the front and back of the top cover. The insert plate at the top of the lower sealing strip is movably connected to the slot cavity at the bottom of the upper sealing strip. The lower sealing strip is pressed against the upper sealing strip as the top cover is snapped onto the top of the housing. The size of the insert plate at its top is adapted to the size of the slot cavity at the bottom of the upper sealing strip. The insert plate is inserted into the slot cavity as the upper and lower sealing strips are pressed against each other. The sealing structure formed by the upper and lower sealing strips can greatly improve the sealing performance at the connection between the top cover and the housing.

[0014] The present invention is further configured such that a sloping frame is fixedly connected to one side of the upper fastening plate, and a pressing plate is fixedly connected to one side of the lower fastening plate. One side of the pressing plate is in contact with the surface of the sloping frame. As the lower fastening plate and the upper fastening plate approach each other, the pressing plate presses against the surface of the sloping frame. Through the special protective structure formed by the pressing plate and the sloping frame, water stains can be prevented from seeping into the inner cavity of the shell and the top cover from between the upper fastening plate and the lower fastening plate.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model forms a basic sealing layer through the threaded connection between the threaded cylinder and the sealing cylinder. Combined with the physical barrier of the protective cylinder, it constructs a core sealing environment inside the magnetic switch. The fitting design of the sealing card frame and the sealing plate significantly improves the tightness of the connection between the top cover and the shell, reducing the risk of gap penetration. The structure of the flared end of the constricted sleeve being fixed to the inner wall of the sealing cylinder and the constricted end wrapping the connecting wire is specifically designed to block the gap between the connecting wire and the sealing cylinder, effectively preventing dust and water stains from intruding along the path of the connecting wire. The multiple sealing structures are interlocked, minimizing the possibility of dust and water stains penetrating.

[0017] 2. This utility model uses a sealing sleeve as the terminal sealing layer inside the protective cylinder. After the connecting wire passes through, it tightly wraps the surface of the connecting wire, forming a contact-type sealing barrier, which further enhances the anti-permeability capability at the entrance of the connecting wire. The upper and lower sealing strips form an elastic sealing interface when the top cover and the shell are in contact through the precise fit of the insert plate slot, which significantly enhances the airtightness of the connection. The upper and lower fastening plates are fixed by the interlocking of the semi-circular clip and the semi-circular groove, combined with the mechanical reinforcement of the fastening screws, to build a rigid connection structure. At the same time, the inclined abutment design of the clamping plate and the inclined frame forms a dynamic pressure sealing mechanism, which effectively prevents water stains from penetrating laterally from the connection gap. Through the synergistic effect of material properties and structural design, multiple types of protective components achieve a systematic improvement in dustproof and waterproof performance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional diagram of a waterproof and dustproof magnetic switch.

[0020] Figure 2 This is a cross-sectional schematic diagram of the protective cylinder in a waterproof and dustproof magnetic switch.

[0021] Figure 3 A waterproof and dustproof magnetic switch Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 A waterproof and dustproof magnetic switch Figure 2 A magnified view of a portion of point B in the middle.

[0023] Figure 5 This is a cross-sectional view of the top cover of a waterproof and dustproof magnetic switch.

[0024] Figure 6 This is a cross-sectional view of the housing of a waterproof and dustproof magnetic switch.

[0025] In the attached diagram: 1. Housing; 2. Top cover; 3. Connecting wire; 4. Protective component; 5. Fastening component; 6. Circuit board; 401. Protective cylinder; 402. Threaded cylinder; 403. Sealing cylinder; 404. Sealing ring; 501. Upper fastening plate; 502. Lower fastening plate; 503. Fastening screw; 504. Semi-circular retaining strip; 505. Semi-circular groove; 7. Groove; 8. Sealing plate; 9. Sealing clip frame; 10. Sealing bracket; 11. Lower sealing strip; 12. Upper sealing strip. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Please see Figure 1-6 This utility model relates to a waterproof and dustproof magnetic switch, comprising a housing 1, a top cover 2 on the top of the housing 1, a connecting wire 3 on one side of the housing 1, a protective component 4 on one side of the housing 1 outside the connecting wire 3, a fastening component 5 on the other side of the housing 1, and a circuit board 6 at the bottom of the inner cavity of the housing 1. The protective component 4 includes a protective cylinder 401, one side of which is fixedly connected to the surface of the housing 1, and a threaded cylinder 402 is fixedly connected to one side of the protective cylinder 401. The surface of the threaded cylinder 402 is threadedly connected to a sealing cylinder 403. A sealing ring 404 is fixedly connected to one side of the surface of the sealing cylinder 403. The fastening assembly 5 includes an upper fastening plate 501. One side of the upper fastening plate 501 is fixedly connected to the surface of the top cover 2. A lower fastening plate 502 is fixedly connected to one side of the housing 1. A fastening screw 503 is passed through the surface of the upper fastening plate 501. A semi-circular retaining strip 504 is fixedly connected to the top of the lower fastening plate 502. A semi-circular groove 505 is opened at the bottom of the upper fastening plate 501.

[0029] Specifically: After passing the connector at one end of the connecting wire 3 through the protective cylinder 401, insert it into the connecting groove of the top mounting plate of the circuit board 6 for fixation. Rotate the sealing cylinder 403, and tighten it onto the surface of the threaded cylinder 402 through the internal thread of its inner wall and the external thread of the threaded cylinder 402. The sealing structure formed by the threaded cylinder 402 and the sealing cylinder 403, together with the protective cylinder 401, can maintain the sealing environment inside the magnetic switch to the greatest extent. At the same time, the upper fastening plate 501 and the lower fastening plate 502 are pressed together, and the semi-circular retaining strip 504 at the top of the lower fastening plate 502 is inserted into the semi-circular groove 505 at the bottom of the upper fastening plate 501. Tighten the fastening screw 503 to reinforce the upper fastening plate 501 and the lower fastening plate 502, thereby improving the sealing performance on the other side of the magnetic switch.

[0030] Example 2

[0031] Please see Figure 1-6Based on Embodiment 1, a groove 7 is provided on one side of the top of the housing 1, and a sealing plate 8 is fixedly connected to the bottom of the inner cavity of the groove 7. A sealing frame 9 is fixedly connected to one side of the bottom of the top cover 2, and the inner wall of the sealing frame 9 is in contact with the surface of the sealing plate 8. A sealing bracket 10 is fixedly connected to the inner cavity of the top cover 2, and the bottom of the sealing bracket 10 is in contact with the inner wall of the housing 1. An annular groove is provided on the side of the protective cylinder 401 away from the housing 1, and an annular plate is fixedly connected to one side of the sealing ring 404. The surface of the annular plate is movably connected to the inner cavity of the annular groove. The inner wall of the sealing cylinder 403 is fixedly connected to... There is a constriction sleeve, the inner wall of which is tightly attached to the surface of the connecting wire 3. A sealing sleeve is fixedly connected to the inner wall of the protective cylinder 401, and the inner wall of the sealing sleeve is tightly attached to the surface of the connecting wire 3. A lower sealing strip 11 is fixedly connected to both the front and back of the housing 1. An upper sealing strip 12 is fixedly connected to both the front and back of the top cover 2. The insert plate at the top of the lower sealing strip 11 is movably connected to the slot cavity at the bottom of the upper sealing strip 12. A sloping frame is fixedly connected to one side of the upper fastening plate 501, and a pressing plate is fixedly connected to one side of the lower fastening plate 502. One side of the pressing plate is in contact with the surface of the sloping frame.

[0032] Specifically: the sealing frame 9 is secured to the surface of the sealing plate 8 as the top cover 2 adheres to the housing 1. The sealing structure formed by the sealing frame 9 and the sealing plate 8 improves the tightness of the connection between the top cover 2 and the housing 1. When the top cover 2 is secured to the top of the housing 1, the sealing frame 10 inside its cavity covers the opening at the top of the housing 1, further sealing the inner cavity of the housing 1. The double sealing space provides better dust and water protection. The annular plate is embedded in the inner cavity of the annular groove as the sealing ring 404 rotates closer to the protective cylinder 401, improving the sealing performance between one side of the sealing ring 404 and the surface of the protective cylinder 401. The flared end of the constricting sleeve is fixedly connected to the inner wall of the sealing cylinder 403, and its constricted end wraps around the surface of the connecting wire 3, further preventing dust and water stains from seeping in from the gap between the sealing cylinder 403 and the connecting wire 3. The sealing sleeve inside the protective cylinder 401 serves as the last layer inside the protective cylinder 401. The sealing structure, after the connecting wire 3 passes through the protective cylinder 401, the sealing sleeve wraps around the surface of the connecting wire 3, preventing external dust and water stains from seeping into the gap between the connecting wire 3 and the protective cylinder 401 to the greatest extent. The lower sealing strip 11 is pressed against the upper sealing strip 12 as the top cover 2 is clipped onto the top of the housing 1. The size of the insert plate at the top of the lower sealing strip 11 is adapted to the size of the slot cavity at the bottom of the upper sealing strip 12. The insert plate is inserted into the slot cavity as the upper sealing strip 12 and the lower sealing strip 11 are pressed together. The sealing structure formed by the upper sealing strip 12 and the lower sealing strip 11 can greatly improve the sealing performance at the connection between the top cover 2 and the housing 1. The abutment plate abuts against the surface of the inclined frame as the lower fastening plate 502 approaches the upper fastening plate 501. The special protective structure formed by the abutment plate and the inclined frame can prevent water stains from seeping into the cavity of the housing 1 and the top cover 2 from between the upper fastening plate 501 and the lower fastening plate 502.

[0033] The working principle of this utility model is as follows: First, one end of the connecting wire 3 is inserted through the protective cylinder 401 and then fixed in the connecting groove of the top mounting plate of the circuit board 6. The sealing cylinder 403 is rotated, and through the internal thread of its inner wall and the external thread of the outer surface of the threaded cylinder 402, it is tightened on the surface of the threaded cylinder 402. The sealing structure formed by the threaded cylinder 402 and the sealing cylinder 403, together with the protective cylinder 401, can maintain the sealing environment inside the magnetic switch to the greatest extent. The sealing frame 9 is also locked onto the surface of the sealing plate 8 as the top cover 2 is pressed against the housing 1. The sealing structure composed of 9 and sealing plate 8 can improve the tightness of the connection between the top cover 2 and the shell 1. The flared end of the constriction sleeve is fixedly connected to the inner wall of the sealing cylinder 403, and its constriction end wraps around the surface of the connecting wire 3, which can further prevent dust and water stains from seeping into the gap between the sealing cylinder 403 and the connecting wire 3. The sealing sleeve of the inner cavity of the protective cylinder 401 serves as the last sealing structure inside the protective cylinder 401. After the connecting wire 3 passes through the protective cylinder 401, the sealing sleeve wraps around the surface of the connecting wire 3, preventing external dust and water stains from seeping into the protective cylinder 401 to the greatest extent. The wire 3 seeps into the gap between the connecting wire 3 and the protective sleeve 401. As the top cover 2 is secured to the top of the housing 1, the lower sealing strip 11 is pressed against the upper sealing strip 12. The size of the insert plate at the top of the lower sealing strip 11 matches the size of the slot cavity at the bottom of the upper sealing strip 12. The insert plate is inserted into the slot cavity as the upper sealing strip 12 and the lower sealing strip 11 are pressed against each other. The sealing structure formed by the upper sealing strip 12 and the lower sealing strip 11 can greatly improve the sealing performance at the connection between the top cover 2 and the housing 1. At the same time, the upper fastening plate 501 is pressed against the lower fastening plate 502. The semi-circular shape at the top of the lower fastening plate 502... The locking strip 504 is inserted into the semi-circular groove 505 at the bottom of the upper fastening plate 501. The fastening screw 503 is tightened to reinforce the upper fastening plate 501 and the lower fastening plate 502. As the lower fastening plate 502 approaches the upper fastening plate 501, the abutment plate abuts against the surface of the inclined frame. Through the special protective structure formed by the abutment plate and the inclined frame, water stains can be prevented from seeping into the inner cavity of the housing 1 and the top cover 2 from between the upper fastening plate 501 and the lower fastening plate 502. This strengthens the seal on the other side of the magnetic switch, and there is no condition for dust and water stains to seep into the connection of the magnetic switch.

[0034] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A waterproof and dustproof magnetic switch, comprising a housing (1), characterized in that: The top of the housing (1) is provided with a top cover (2), a connecting wire (3) is provided on one side of the housing (1), a protective component (4) is provided on one side of the housing (1) and outside the connecting wire (3), a fastening component (5) is provided on the other side of the housing (1), and a circuit board (6) is provided at the bottom of the inner cavity of the housing (1). The protective component (4) includes a protective cylinder (401), one side of which is fixedly connected to the surface of the housing (1), a threaded cylinder (402) is fixedly connected to one side of the protective cylinder (401), a sealing cylinder (403) is threadedly connected to the surface of the threaded cylinder (402), and a sealing ring (404) is fixedly connected to one side of the surface of the sealing cylinder (403). The fastening assembly (5) includes an upper fastening plate (501), one side of which is fixedly connected to the surface of the top cover (2), and a lower fastening plate (502) is fixedly connected to one side of the housing (1). A fastening screw (503) is connected through the surface of the upper fastening plate (501), and a semi-circular retaining strip (504) is fixedly connected to the top of the lower fastening plate (502). A semi-circular groove (505) is provided at the bottom of the upper fastening plate (501).

2. The waterproof and dustproof magnetic switch according to claim 1, characterized in that: A groove (7) is provided on one side of the top of the housing (1), and a sealing plate (8) is fixedly connected to the bottom of the inner cavity of the groove (7). A sealing frame (9) is fixedly connected to one side of the bottom of the top cover (2), and the inner wall of the sealing frame (9) is in contact with the surface of the sealing plate (8).

3. A waterproof and dustproof magnetic switch according to claim 1, characterized in that: The inner cavity of the top cover (2) is fixedly connected to a sealing frame (10), and the bottom of the sealing frame (10) is in contact with the inner wall of the shell (1).

4. A waterproof and dustproof magnetic switch according to claim 1, characterized in that: The protective cylinder (401) has an annular groove on the side away from the shell (1), and an annular plate is fixedly connected to one side of the sealing ring (404). The surface of the annular plate is movably connected to the inner cavity of the annular groove.

5. A waterproof and dustproof magnetic switch according to claim 1, characterized in that: The inner wall of the sealing cylinder (403) is fixedly connected to a shrink sleeve, and the inner wall of the shrink sleeve is in close contact with the surface of the connecting wire (3).

6. A waterproof and dustproof magnetic switch according to claim 1, characterized in that: The inner wall of the protective cylinder (401) is fixedly connected with a sealing sleeve, and the inner wall of the sealing sleeve is in close contact with the surface of the connecting wire (3).

7. A waterproof and dustproof magnetic switch according to claim 1, characterized in that: The front and back of the housing (1) are fixedly connected with a lower sealing strip (11), and the front and back of the top cover (2) are fixedly connected with an upper sealing strip (12). The insert plate at the top of the lower sealing strip (11) is movably connected to the slot cavity at the bottom of the upper sealing strip (12).

8. A waterproof and dustproof magnetic switch according to claim 1, characterized in that: An inclined plate is fixedly connected to one side of the upper fastening plate (501), and an abutment plate is fixedly connected to one side of the lower fastening plate (502), with one side of the abutment plate in contact with the surface of the inclined plate.

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