Door magnetic induction switch easy to maintain

Abstract

The utility model discloses a door magnetic induction switch easy to maintain, which comprises a permanent magnet piece (1) and a magnetic induction piece (2), the magnetic induction piece (2) comprises a middle piece (3), the front side and the rear side of the middle piece (3) are respectively provided with an induction circuit board (4) and a battery installation bin (5) used for fixing a battery, and a battery power connection piece (6) connected with the induction circuit board (4) in an inserted mode is arranged in the battery installation bin (5). A first buckling cover (7) used for covering the induction circuit board (4) is arranged on the front side of the middle piece (3), and a sliding clamping cover (8) used for covering the battery installation bin (5) is arranged on the rear side of the middle piece (3). A first fixing surface (9) is arranged on the sliding clamping cover (8); according to the utility model, the permanent magnet, the induction circuit board and the battery can be independently and quickly disassembled and maintained, and the use reliability is good.

Description

Technical Field

[0001] This utility model relates to the field of door magnetic induction switches, and in particular to a door magnetic induction switch that is easy to maintain. Background Technology

[0002] A door magnetic sensor switch is a device used to detect the open / closed status of doors and windows. It consists of a door magnetic body and a magnet, which are installed on the door / window body and frame, respectively. When the door / window is closed and the door magnetic body and magnet are close together, the magnetic field activates the circuit of the door magnetic body. When the door / window is opened, the two move away and the circuit is disconnected, thus detecting the open / closed status of the door / window. Existing door magnetic sensor switches on the market, such as the Chinese utility model with announcement number CN214616219U, specifically include a door magnetic body and a door magnetic sub-body. The door magnetic body includes an interlocking upper shell and a lower shell. The power supply and control board are installed together in the cavity formed by the upper shell and the lower shell. Its internal structure does not have a quick connection structure for the power supply and control board, making disassembly and assembly inconvenient. Moreover, when one component is disassembled, the other component is exposed to the outside, which may be damaged, resulting in poor reliability. Utility Model Content

[0003] The purpose of this invention is to provide an easy-to-maintain door magnetic induction switch. This invention allows for individual quick-release maintenance of the permanent magnet, induction circuit board, and battery, and offers excellent reliability.

[0004] The technical solution of this utility model is as follows: A door magnetic induction switch that is easy to maintain includes a permanent magnet and a magnetic induction element. The magnetic induction element includes an intermediate part, with an induction circuit board and a battery mounting compartment for fixing a battery respectively on the front and rear sides of the intermediate part. The battery mounting compartment has a battery connector that is inserted into the induction circuit board. The front side of the intermediate part has a first snap-fit ​​cover for covering the induction circuit board, and the rear side of the intermediate part has a sliding snap-fit ​​cover for covering the battery mounting compartment. The sliding snap-fit ​​cover has a first fixing surface. The permanent magnet includes a fixing box, in which a permanent magnet is embedded. The fixing box has a second snap-fit ​​cover covering the permanent magnet. The fixing box has a second fixing surface.

[0005] In the aforementioned easy-to-maintain door magnetic induction switch, the front side of the intermediate component is provided with multiple protrusions, and the protrusions are provided with snap-fit ​​openings. The edge of the first snap-fit ​​cover is provided with snap-fit ​​blocks that are adapted to the snap-fit ​​openings.

[0006] In the aforementioned easy-to-maintain door magnetic induction switch, the rear side of the intermediate component is provided with multiple protrusions, the protrusions are provided with guide grooves, and the guide grooves are provided with locking blocks; the edge of the sliding latch cover is provided with a slider that matches the guide groove, and the slider is provided with a locking groove that matches the locking block.

[0007] In the aforementioned easy-to-maintain door magnetic induction switch, the rear end edge of the intermediate component is provided with a limiting stop, and the end of the sliding latch cover is provided with a fitting groove that matches the limiting stop.

[0008] In the aforementioned easy-to-maintain door magnetic induction switch, the limiting stop edge is provided with a positioning slot, and the end of the sliding latch cover is provided with a positioning block that matches the positioning slot.

[0009] In the aforementioned easy-to-maintain door magnetic induction switch, the first snap-fit ​​cover is provided with a limiting block for attaching to the front side of the induction circuit board, and the bottom of the battery mounting compartment extends to the front side of the intermediate part and attaches to the rear side of the induction circuit board.

[0010] In the aforementioned easy-to-maintain door magnetic induction switch, the limiting block is provided with a positioning plate, and the side of the induction circuit board is provided with a positioning groove that matches the positioning plate.

[0011] In the aforementioned easy-to-maintain door magnetic induction switch, both the fixing box and the second snap-fit ​​cover are provided with limiting cavities for positioning the permanent magnet.

[0012] In the aforementioned easy-to-maintain door magnetic induction switch, both the first fixing surface and the second fixing surface are adhesive bonding surfaces.

[0013] Compared with the prior art, this utility model fixes the magnetic induction element and the permanent magnet to the door and window frame and the door and window body respectively through the first and second fixing surfaces during installation. When maintaining the permanent magnet, the permanent magnet embedded in the fixing box can be removed by removing the second snap-fit ​​cover. When maintaining the battery, the middle part and the first snap-fit ​​cover are held and force is applied longitudinally. The sliding snap-fit ​​cover separates from the middle part due to the first fixing surface, and the battery installation compartment is exposed, allowing the battery inside to be replaced. During this process, the first snap-fit ​​cover always covers the induction circuit board to prevent exposure and damage. When maintaining the induction circuit board, the first snap-fit ​​cover is pulled out laterally to remove it, exposing the induction circuit board for inspection and maintenance. It can also be removed from the battery terminal to disconnect the power for replacement. During the process, the battery installation compartment is still covered by the sliding snap-fit ​​cover to prevent exposure and damage. This utility model allows for separate quick-release maintenance of the permanent magnet, induction circuit board and battery, and has excellent reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model after removing the first and second snap-fit ​​covers;

[0017] Figure 4 This is a schematic diagram of the structure of this utility model after removing the sliding cover and the box body;

[0018] Figure 5 This is a structural schematic diagram of the middleware of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the first snap-fit ​​cover of this utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the sliding latch cover of this utility model.

[0021] The labels in the attached diagram are as follows: 1. Permanent magnet; 2. Magnetic induction component; 3. Intermediate component; 4. Induction circuit board; 5. Battery mounting compartment; 6. Battery connector; 7. First snap-fit ​​cover; 8. Sliding snap-fit ​​cover; 9. First fixing surface; 10. Fixing box; 11. Permanent magnet; 12. Second snap-fit ​​cover; 13. Second fixing surface; 14. Protrusion plate; 15. Snap-fit ​​opening; 16. Snap-fit ​​block; 17. Protrusion; 18. Guide groove; 19. Locking block; 20. Slider; 21. Locking slot; 22. Limiting stop; 23. Fitting groove; 24. Positioning slot; 25. Positioning insert; 26. Limiting block; 27. Positioning plate; 28. Positioning groove; 29. ​​Limiting cavity; 30. Battery. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0023] Example: An easy-to-maintain door magnetic induction switch, as shown in the attached document. Figure 1 and attached Figure 2 As shown, it includes a permanent magnet 1 and a magnetic induction element 2, as attached. Figure 3 -Appendix Figure 7As shown, the magnetic induction element 2 includes a plate-shaped plastic intermediate part 3. Induction circuit boards 4 are mounted on the front and rear of the intermediate part 3. A battery mounting compartment 5 for fixing the battery 30 is opened on the rear side of the intermediate part. The battery mounting compartment has positive and negative elastic electrode plates for connecting and fixing the battery, which is a well-known and mastered technique, and will not be described in detail here. Battery mounting compartment 5 is fixed with battery contact plates connected to the positive and negative elastic electrode plates. The battery contact plates extend to the front side of the intermediate part and are inserted into an opening processed on the induction circuit board 4. Conductive contacts for electrical connection with the battery contact plates are soldered onto the opening. A first plastic fastening cover 7 for covering the induction circuit board 4 is fastened to the front side of the intermediate part 3, and a first plastic fastening cover 7 is fastened to the rear side of the intermediate part 3. The system includes a plastic sliding latching cover 8 for covering the battery installation compartment 5; the sliding latching cover 8 has a first fixing surface 9 bonded to it, which is fixed to the door / window frame by adhesive bonding, avoiding damage caused by drilling compared to screw installation; the permanent magnet component 1 includes a fixing box 10, in which a permanent magnet 11 is embedded; a second latching cover 12 covering the permanent magnet 11 is fastened to the fixing box 10; the fixing box 10 has a second fixing surface 13 bonded to it, which is fixed to the door / window frame by adhesive bonding, avoiding damage caused by drilling compared to screw installation; the front side of the intermediate component 3 has multiple protruding plates 14 integrally formed, with latching openings 15 on the protruding plates 14, and the edge of the first latching cover 7 integrally formed with... The fastening block 16, which is adapted to the fastening opening 15, deforms by squeezing the protruding plate and inserts into the fastening opening when the first fastening cover is engaged laterally, thus achieving fastening and fixation. The same applies when pulling out. Multiple protrusions 17 are integrally formed on the rear side of the intermediate component 3. Guide grooves 18 are formed on the protrusions 17, and locking blocks 19 are machined within the guide grooves 18. A slider 20, adapted to the guide grooves 18, is integrally formed on the edge of the sliding fastening cover 8. A locking groove 21, adapted to the locking block 19, is formed on the slider 20. The opening end of the guide groove is aligned with the slider and inserted. When the locking groove of the slider contacts the locking block, it deforms by squeezing until the locking block enters the locking groove, achieving engagement and fixation. The same applies when pulling out. A U-shaped limiting stop 22 is integrally formed on the rear end edge of the intermediate component 3. The end of the sliding latch cover 8 is integrally formed with a fitting groove 23 that matches the limiting stop 22. The limiting stop and the fitting groove fit together to limit the sliding insertion depth of the intermediate part. The limiting stop 22 has a positioning slot 24. The end of the sliding latch cover 8 is integrally formed with a positioning block 25 that matches the positioning slot 24. The positioning block is inserted into the positioning slot to improve the fixing reliability after connection. The first latch cover 7 is integrally formed with a limiting block 26 for attaching to the front side of the sensing circuit board 4. The bottom of the battery installation compartment 5 extends to the front side of the intermediate part 3 and attaches to the rear side of the sensing circuit board 4. The two work together to ensure reliable positioning of the battery installation compartment and prevent shaking or abnormal noise or damage when the door and window are moved.A positioning plate 27 is integrally formed on the limiting block 26. A positioning groove 28, adapted to the positioning plate 27, is opened on the side of the sensing circuit board 4. This, in conjunction with the positioning plate, further improves the positioning reliability of the sensing circuit board. Both the fixing box 10 and the second snap-fit ​​cover 12 have limiting cavities 29 for positioning the permanent magnet 11, reliably limiting the permanent magnet and preventing displacement.

[0024] Working principle: During installation, the magnetic induction component 2 and the permanent magnet component 1 are fixed to the door and window frame and the door and window body respectively by using the first fixing surface 9 on the sliding cover 8 and the second fixing surface 13 on the fixing box 10. Compared with screw installation, it is not only easier to operate, but also avoids drilling holes in the door and window frame and the door and window body, thereby preventing damage to them.

[0025] Door and window opening / closing status detection: When the doors and windows are closed, the permanent magnet 11 in the permanent magnet component 1 is close to the sensing circuit board 4 in the magnetic induction component 2. The magnetic field generated by the permanent magnet 11 acts on the sensing circuit board 4. When the distance is 2-3cm, the circuit in the sensing circuit board 4 is connected, thereby triggering relevant signals, indicating that the doors and windows are closed. When the doors and windows are opened, the permanent magnet 11 moves away from the sensing circuit board 4, the magnetic field effect on the sensing circuit board 4 weakens, the circuit is disconnected, and corresponding signal changes are generated, thereby realizing real-time detection of the door and window opening / closing status.

[0026] Permanent magnet maintenance: When maintaining the permanent magnet 11, simply remove the second snap-fit ​​cover 12 to easily remove the permanent magnet 11 embedded in the fixing box 10. Both the fixing box 10 and the second snap-fit ​​cover 12 are provided with limiting cavities 29. During normal use, the limiting cavity 29 can reliably limit the permanent magnet 11 to prevent it from shifting and ensure the accuracy of the test. During maintenance, the design of the limiting cavity 29 also facilitates the removal and installation of the permanent magnet 11.

[0027] Battery maintenance: When battery maintenance is required, hold the middle part 3 and the first latching cover 7 and apply longitudinal force. Since the first fixing surface 9 on the sliding latching cover 8 is bonded to the middle part 3, the longitudinal force will cause the sliding latching cover 8 to separate from the middle part 3, at which time the battery installation compartment 5 will be exposed. The battery installation compartment 5 is equipped with a battery contact plate 6 that is inserted into the sensing circuit board 4 to supply power. During the battery replacement process, the first latching cover 7 always covers the sensing circuit board 4, effectively preventing the sensing circuit board 4 from being exposed and damaged, and ensuring the safety and stability of the sensing circuit board 4.

[0028] Induction circuit board maintenance: To maintain the induction circuit board 4, pull the first snap-fit ​​cover 7 outward laterally. The snap-fit ​​block 16 on the edge of the first snap-fit ​​cover 7 will separate from the snap-fit ​​opening 15 on the front protrusion 14 of the middle part 3, thereby removing the first snap-fit ​​cover 7 and exposing the induction circuit board 4. At this time, the induction circuit board 4 can be inspected and maintained, or it can be removed from the battery terminal 6 to disconnect the power for replacement. During this process, the battery installation compartment 5 is still covered by the sliding snap-fit ​​cover 8, which avoids the battery 30 from falling off and being damaged due to the battery installation compartment 5 being exposed.

[0029] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. Furthermore, in these embodiments, "up," "down," "left," "right," "front," and "back" represent relative positions only, not absolute positions. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A maintenance-friendly door magnetic induction switch comprising a permanent magnet (1) and a magnetic induction element (2), characterized in that: The magnetic induction piece (2) comprises an intermediate piece (3), the front and back sides of the intermediate piece (3) are respectively provided with an induction circuit board (4) and a battery mounting bin (5) for fixing a battery, the battery mounting bin (5) is provided with a battery connecting piece (6) plugged with the induction circuit board (4); the front side of the intermediate piece (3) is provided with a first buckling cover (7) for covering the induction circuit board (4), and the back side of the intermediate piece (3) is provided with a sliding clamping cover (8) for covering the battery mounting bin (5); the sliding clamping cover (8) is provided with a first fixing surface (9); the permanent magnet piece (1) comprises a fixed box (10), and the fixed box (10) is embedded with a permanent magnet (11); the fixed box (10) is provided with a second buckling cover (12) covering the permanent magnet (11); and the fixed box (10) is provided with a second fixing surface (13).

2. The easy-to-maintain door magnetic induction switch according to claim 1, characterized in that: The front side edge of the intermediate piece (3) is provided with a plurality of convex plates (14), the convex plates (14) are provided with buckling openings (15), and the edge of the first buckling cover (7) is provided with buckling blocks (16) matched with the buckling openings (15).

3. The easy-to-maintain door magnetic induction switch according to claim 1, characterized in that: The back side edge of the intermediate piece (3) is provided with a plurality of convex blocks (17), the convex blocks (17) are provided with guide grooves (18), the guide grooves (18) are provided with clamping blocks (19), the edge of the sliding clamping cover (8) is provided with sliding blocks (20) matched with the guide grooves (18), and the sliding blocks (20) are provided with clamping grooves (21) matched with the clamping blocks (19).

4. The easy-to-maintain door magnetic induction switch according to claim 1, characterized in that: The end edge of the back side of the intermediate piece (3) is provided with a limiting stop edge (22), and the end of the sliding clamping cover (8) is provided with an embedded groove (23) matched with the limiting stop edge (22).

5. The easy-to-maintain door magnetic induction switch according to claim 4, characterized in that: The limiting stop edge (22) is provided with a positioning slot (24), and the end of the sliding clamping cover (8) is provided with a positioning plug (25) matched with the positioning slot (24).

6. The easy-to-maintain door magnetic induction switch according to claim 1, characterized in that: The first buckling cover (7) is provided with a limiting block (26) used for abutting against the front side of the induction circuit board (4), and the bin bottom of the battery mounting bin (5) extends to the front side of the intermediate piece (3) and abuts against the back side of the induction circuit board (4).

7. The easy-to-maintain door magnetic induction switch according to claim 6, characterized in that: The limiting block (26) is provided with a positioning plate (27), and the side edge of the induction circuit board (4) is provided with a positioning groove (28) matched with the positioning plate (27).

8. The easy-to-maintain door magnetic induction switch according to claim 1, characterized in that: The fixed box (10) and the second buckling cover (12) are both provided with a limiting cavity (29) used for positioning the permanent magnet (11).

9. The easy-to-maintain door magnetic induction switch according to claim 1, characterized in that: The first fixing surface (9) and the second fixing surface (13) are both adhesive bonding surfaces.

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