Non-contact door magnetic sensor

Abstract

The utility model relates to the technical field of door magnetic sensors, and discloses a non-contact door magnetic sensor, which comprises a switch shell, a magnet shell and a sealing element clamped on the lower surface of the switch shell and the lower surface of the magnet shell, an opening and closing mechanism for ejecting the sealing element is arranged in each of the switch shell and the magnet shell; a circuit board is arranged in an inner cavity of the switch shell; through cooperation of the switch shell, the magnet shell, the sealing piece and the opening and closing mechanism, the push block can be driven by the threaded end by rotating an inner hexagonal head at the end of the connecting rod, so that the push block moves relatively, the angle of an insertion block of the sealing piece can be adjusted conveniently, the sealing piece can be disassembled rapidly, and the service life of the sealing piece is prolonged. Therefore, the maintenance of the sensor body on the circuit board is facilitated, the maintenance efficiency of the sensor body is improved, and the service life of the door magnetic sensor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to door magnetic sensor technical field, concretely is non -contact door magnetic sensor. BACKGROUND

[0002] Wireless door magnetic sensor is a kind of device for detecting the opening and closing state of door. It is usually composed of two parts: a magnetic sensor installed on the door frame and a magnet installed on the door. When the door is closed, the magnet is close to the sensor, and the sensor will send a signal indicating that the door is closed. When the door is opened, the magnet leaves the sensor, and the sensor sends another signal indicating that the door is opened.

[0003] The host shell and the magnet shell of the door magnetic sensor in the prior art are usually integrally formed, which makes it inconvenient to repair the sensor and the circuit board in the host when they are damaged during long-term use, and thus the door magnetic sensor needs to be replaced when it fails to sense, so we need to propose a non-contact door magnetic sensor. SUMMARY

[0004] The utility model aims at providing non -contact door magnetic sensor, adopts the form of clamping and can quickly assemble the shell of door magnetic sensor, and the opening and closing mechanism can quickly separate the shell of door magnetic sensor, improve the disassembly efficiency of the shell of door magnetic sensor, so as to repair the circuit board in the shell of door magnetic sensor, improve the service life of door magnetic sensor, to solve the problem proposed in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: non -contact door magnetic sensor, including:

[0006] Switch shell and magnet shell, and sealing element clamped on the lower surface of switch shell and the lower surface of magnet shell, the structure of switch shell is same with the structure of magnet shell, opening and closing mechanism for ejecting sealing element is arranged in switch shell and magnet shell;

[0007] The inner cavity of switch shell is provided with a circuit board, a sensor body is installed on the circuit board, and a mounting bracket is arranged in the inner cavity of magnet shell, and a magnet body is arranged on the mounting bracket.

[0008] The opening and closing mechanism includes a connecting rod, both ends of the connecting rod are provided with threaded sections, threaded ends of the connecting rod are provided with push blocks for ejecting sealing elements, and one end of the connecting rod is provided with an internal hexagonal head.

[0009] Preferably, the top of the inner cavity of the switch shell and the top of the inner cavity of the magnet shell are provided with a reinforcing beam for rotating the connecting rod, and the both ends of the connecting rod are provided with a limiting ring for limiting the movement distance of the push block.

[0010] Preferably, the sealing element includes a sealing plate, and two sets of inserts are symmetrically fixedly connected to the upper surface of the sealing plate, with a locking block provided on the upper end of the opposite side of each set of inserts.

[0011] Preferably, both sides of the inner cavity of the switch housing and the magnet housing are fixedly connected with positioning blocks for limiting the position of the card block. The cross-section of the positioning block is set in a right trapezoid and the positioning block is set in a U-shape.

[0012] Preferably, both the open end of the switch housing and the open end of the magnet housing are fixedly connected to a support beam, and the two sets of support beams are respectively arranged between the two sets of plugs, the plugs being U-shaped.

[0013] Preferably, the upper surface of the switch housing and the upper surface of the magnet housing are provided with two sets of positioning through holes, and the sealing plate is provided with an opening on one side.

[0014] Preferably, the upper surface of the switch housing and the upper surface of the magnet housing are both provided with target marks, and a cable electrically connected to the circuit board is provided on one side of the switch housing.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model mainly utilizes the cooperation between the switch housing, magnet housing, seal, and opening / closing mechanism. By rotating the internal hexagonal head at the end of the connecting rod, the push block can be driven by the threaded end, thereby moving the position of the push block relative to the switch housing. This facilitates the adjustment of the angle of the seal insert, allowing for quick disassembly of the seal, which in turn facilitates the maintenance of the sensor body on the circuit board. This improves the maintenance efficiency of the sensor body and extends the service life of the door magnetic sensor. Attached Figure Description

[0017] Fig. 1 This is a three-dimensional structural diagram of the present invention;

[0018] Fig. 2 This is a schematic diagram of the internal structure of the switch housing of this utility model;

[0019] Fig. 3 This is a schematic diagram of the internal structure of the magnet shell of this utility model.

[0020] In the diagram: 1. Switch housing; 2. Magnet housing; 3. Positioning through hole; 4. Target mark; 5. Cable; 6. Seal; 61. Sealing plate; 62. Opening; 63. Insert block; 64. Locking block; 7. Opening and closing mechanism; 71. Connecting rod; 72. Hex socket head cap; 73. Limit ring; 74. Threaded section; 75. Push block; 8. Support beam; 9. Positioning block; 10. Circuit board; 11. Sensor body; 12. Reinforcing beam; 13. Mounting bracket; 14. Magnet body. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figs. 1-3 This utility model provides a technical solution: a non-contact door magnetic sensor, comprising:

[0023] The switch housing 1 and the magnet housing 2, and the sealing element 6 snapped onto the lower surface of the switch housing 1 and the lower surface of the magnet housing 2. The structure of the switch housing 1 is the same as that of the magnet housing 2. Both the switch housing 1 and the magnet housing 2 are provided with an opening and closing mechanism 7 that pushes out the sealing element 6.

[0024] The inner cavity of the switch housing 1 is provided with a circuit board 10, and a sensor body 11 is mounted on the circuit board 10. The inner cavity of the magnet housing 2 is provided with a mounting bracket 13, and a magnet body 14 is mounted on the mounting bracket 13. The sensor body 11 is a DK-01R two-wire contact normally open reed type. The detection distance between the sensor body 11 and the magnet body 14 is 0-12mm, and the conduction process does not consume current. The response frequency is 200hz.

[0025] The opening and closing mechanism 7 includes a connecting rod 71, both ends of which are provided with threaded sections 74. Each threaded end of the connecting rod 71 is equipped with a push block 75 that pushes out of the seal 6. One end of the connecting rod 71 is provided with an internal hexagon head 72.

[0026] Both the top of the inner cavity of the switch housing 1 and the top of the inner cavity of the magnet housing 2 are provided with reinforcing beams 12 for the connecting rod 71 to rotate. Both ends of the connecting rod 71 are provided with limiting rings 73 to restrict the movement distance of the push block 75. The limiting rings 73 can prevent the push block 75 from moving too far, which would cause severe deformation of the insert 63 and damage, thus improving the protection effect of the seal 6. At the same time, the push block 75 slides along the top of the inner cavity of the switch housing 1 and the magnet housing 2, thereby preventing the push block 75 from shifting at an angle.

[0027] The sealing element 6 includes a sealing plate 61. Two sets of insert blocks 63 are symmetrically fixedly connected to the upper surface of the sealing plate 61. Each set of insert blocks 63 has a locking block 64 on the upper end of its opposite side. The locking block 64 can slide along the positioning block 9 when inserted into the switch housing 1, thereby causing the insert block 63 to tilt to a certain extent. After the locking block 64 moves to the top of the positioning block 9, the angle of the insert block 63 returns to normal, thus completing the positioning of the sealing plate 61 and improving the installation efficiency of the sealing plate 61.

[0028] Both sides of the inner cavity of the switch housing 1 and the magnet housing 2 are fixedly connected to positioning blocks 9 that limit the position of the locking block 64. The cross section of the positioning block 9 is set in a right trapezoid and the positioning block 9 is set in a U-shape. The structure of the positioning block 9 facilitates the installation of the sealing element 6 and the cable 5, thus improving its practicality.

[0029] Both the open end of the switch housing 1 and the open end of the magnet housing 2 are fixedly connected to support beams 8. The two sets of support beams 8 are respectively set between the two sets of plugs 63. The plugs 63 are U-shaped. The support beams 8 improve the overall strength of the switch housing 1 and the magnet housing 2, thereby improving the service life of the housing, and at the same time facilitate the guidance of the installation position of the plugs 63 of the sealing element 6.

[0030] Two sets of positioning through holes 3 are provided on the upper surface of the switch housing 1 and the upper surface of the magnet housing 2. An opening 62 is provided on one side of the sealing plate 61. The positioning through holes 3 facilitate the installation of the switch housing 1 and the magnet housing 2 on the door and the door frame, thereby facilitating the use of the door magnetic sensor. The opening 62 facilitates the push block 75 to push out the locking block 64 and then snap the sealing plate 61 out, improving the efficiency of disassembling the sealing component 6.

[0031] The upper surface of the switch housing 1 and the upper surface of the magnet housing 2 are both provided with target marks 4. A cable 5 electrically connected to the circuit board 10 is provided on one side of the switch housing 1. The target marks 4 facilitate the limitation of the installation angle of the switch housing 1 and the magnet housing 2, ensuring that the switch housing 1 and the magnet housing 2 are set relative to each other, and the installation distance between the magnet housing 2 and the switch housing 1 is less than 12mm, thereby ensuring the normal use of the door magnetic sensor.

[0032] Both the switch housing 1 and the magnet housing 2 are made of aluminum, and the surface of the aluminum housing is oxidized to improve the overall service life. The sensor body 11 operates in a temperature range of -25℃ to 70℃, and is stored in a temperature range of -40℃ to 85℃. The ambient humidity of the sensor body 11 during operation and storage is 35%-95%.

[0033] In use, a hex wrench is inserted into the internal hex head 72 to facilitate rotation of the internal hex head 72, which in turn drives the connecting rod 71 to rotate. The connecting rod 71, through the threaded section 74, drives the push block 75 to slide along the top of the switch housing 1 or the magnet housing 2, thereby pushing the locking block 64 on the insert block 63 out of the top of the positioning block 9. Under the action of the limit ring 73, the push block 75 is prevented from moving further. By engaging the opening 62 on the sealing plate 61, the sealing element 6 can be easily separated from the switch housing 1 or the magnet housing 2, facilitating the maintenance of the sensor body 11. This improves the convenience of disassembly and assembly, and also increases the efficiency of door magnetic sensor maintenance.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-contact door magnetic sensor, characterized in that, include: The switch housing (1) and the magnet housing (2), and the sealing element (6) snapped onto the lower surface of the switch housing (1) and the lower surface of the magnet housing (2). The structure of the switch housing (1) is the same as that of the magnet housing (2). Both the switch housing (1) and the magnet housing (2) are provided with an opening and closing mechanism (7) that pushes out the sealing element (6). The inner cavity of the switch housing (1) is provided with a circuit board (10), and a sensor body (11) is mounted on the circuit board (10). The inner cavity of the magnet housing (2) is provided with a mounting bracket (13), and a magnet body (14) is mounted on the mounting bracket (13). The opening and closing mechanism (7) includes a connecting rod (71), both ends of which are provided with threaded sections (74), and the threaded ends of the connecting rod (71) are each equipped with a push block (75) that pushes out the seal (6), and one end of the connecting rod (71) is provided with an internal hexagon head (72).

2. The non-contact door magnetic sensor according to claim 1, characterized in that: The top of the inner cavity of the switch housing (1) and the top of the inner cavity of the magnet housing (2) are both provided with a reinforcing beam (12) for the connecting rod (71) to rotate. Both ends of the connecting rod (71) are provided with a limiting ring (73) to restrict the movement distance of the push block (75).

3. The non-contact door magnetic sensor according to claim 2, characterized in that: The sealing element (6) includes a sealing plate (61), and two sets of inserts (63) are symmetrically fixedly connected to the upper surface of the sealing plate (61). Each set of inserts (63) has a locking block (64) on the upper end of the opposite side.

4. The non-contact door magnetic sensor according to claim 3, characterized in that: Both sides of the inner cavity of the switch housing (1) and the magnet housing (2) are fixedly connected to positioning blocks (9) that limit the position of the card block (64). The cross section of the positioning block (9) is set in a right trapezoid and the positioning block (9) is set in a U-shape.

5. The non-contact door magnetic sensor according to claim 4, characterized in that: The opening ends of the switch housing (1) and the magnet housing (2) are both fixedly connected to support beams (8). The two sets of support beams (8) are respectively arranged between the two sets of plugs (63), and the plugs (63) are U-shaped.

6. The non-contact door magnetic sensor according to claim 5, characterized in that: The upper surface of the switch housing (1) and the upper surface of the magnet housing (2) are provided with two sets of positioning through holes (3), and the sealing plate (61) is provided with an opening (62) on one side.

7. The non-contact door magnetic sensor according to claim 6, characterized in that: The upper surface of the switch housing (1) and the upper surface of the magnet housing (2) are both provided with target marks (4), and a cable (5) electrically connected to the circuit board (10) is provided on one side of the switch housing (1).

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