A door magnetic sensor

By introducing an "L"-shaped rod positioning mechanism and a gear sliding mechanism into the door magnetic sensor, the problems of time-consuming and inaccurate position adjustment of the main magnetic lock and the auxiliary magnetic lock in the existing technology are solved, realizing fast and accurate positioning and disassembly, and improving operating efficiency and stability.

CN224595153UActive Publication Date: 2026-08-04SHANGHAI ZHONGTAI FIRE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI ZHONGTAI FIRE TECH CO LTD
Filing Date
2025-08-08
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Existing door magnetic sensors require precise twisting of the screw head when adjusting the positions of the main and auxiliary magnetic locks, which is time-consuming and can easily lead to inaccurate positioning, affecting stability.

Method used

It adopts a positioning mechanism with "L"-shaped rod positioning function and a sliding mechanism with gear sliding function. It achieves fast and accurate positioning through the combination of insert and spring, and uses the attraction of magnets to achieve quick assembly and disassembly of the main magnetic lock and the auxiliary magnetic lock.

Benefits of technology

It enables rapid and accurate positioning and disassembly of the main magnetic lock and the auxiliary magnetic lock, improving operational efficiency and stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of door magnetic sensor, in particular to a door magnetic sensor which comprises a long cylinder and a sliding block, the long cylinder is provided with a positioning mechanism with L-shaped rod positioning function, the positioning mechanism comprises a spring, one end of the L-shaped rod is fixedly connected with a plug post, the plug post is sleeved with the spring, the sliding block is provided with a sliding mechanism with gear sliding function, the sliding mechanism comprises a gear rack, the gear is engaged with the gear rack, the gear rack is located on the horizontal plane of the L-shaped column, a sliding groove one is formed in each of two fixing plates, and a plurality of plug holes one are equidistantly formed in the bottom of the fixing plate. The door magnetic sensor has the advantages that the positioning of the main magnetic lock and the auxiliary magnetic lock after adjustment can be completed by only pulling the L-shaped rod to compress the spring and inserting the plug post into one of the plug holes one, so that the door magnetic sensor can realize quick and accurate positioning.
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Description

Technical Field

[0001] This application relates to the field of door magnetic sensor technology, and in particular to a door magnetic sensor. Background Technology

[0002] Door magnetic sensors are widely used in security systems, smart homes, and other fields, primarily for monitoring the open / closed status of doors and windows. As people's demands for security and convenience increase, door magnetic sensor technology has continuously evolved, transforming from simple mechanical structures into intelligent products integrating advanced technologies such as electronics and wireless communication.

[0003] A search revealed Chinese Patent Publication No. CN219574912U, which discloses a door magnetic sensor, relating to the field of door magnetic sensor technology. The sensor includes a door frame, with a door rotatably mounted inside the frame. Handles are rotatably mounted on one end of each side of the door. A groove is formed on the top of one side of both the door frame and the door. A fixing plate is fixedly mounted inside each groove. A sliding groove is formed in the center of each fixing plate, and a slider is slidably mounted inside the groove. A main magnetic lock is fixedly mounted on one side of the top of the slider, and a secondary lock is fixedly mounted on the top of the other side of the slider. A waterproof cover is slidably mounted on the outside of the groove. This invention, through the design of the sliding groove, allows the slider to slide within the groove, thereby adjusting the positional distance between the main magnetic lock and the secondary lock. This facilitates adjustment of the positional distance between the main magnetic lock and the secondary lock during installation, and also allows for adjustment after long-term use due to vibration and displacement of the main magnetic lock and the secondary lock. The operation is simple.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following deficiencies in this patent:

[0005] In this patent, adjusting the positions of the main magnetic lock and the auxiliary magnetic lock requires using a screw head to position them. This requires precisely turning the screw head to the appropriate position, which is not only time-consuming but also prone to inaccurate positioning due to improper operation, affecting the stability of the positioning process of the main magnetic lock and the auxiliary magnetic lock.

[0006] Therefore, in response to the above problems, the applicant provides a door magnetic sensor. Utility Model Content

[0007] To address the problems mentioned in the background section, this application provides a door magnetic sensor.

[0008] This application provides a door magnetic sensor, which adopts the following technical solution:

[0009] A door magnetic sensor includes a long cylinder and a slider. The long cylinder is provided with a positioning mechanism that has an "L"-shaped rod positioning function. The positioning mechanism includes a spring. One end of the "L"-shaped rod is fixedly connected to a post, and the spring is sleeved on the post.

[0010] The slider is provided with a sliding mechanism with gear sliding function. The sliding mechanism includes a rack, the gear meshes with the rack, and the rack is located on the horizontal plane of the "L" shaped column.

[0011] Optionally, it also includes two fixing plates, each of which has a sliding groove. The bottom of the fixing plate has multiple insertion holes at equal intervals. The inner side of the sliding groove has a slot, in which a magnet is embedded.

[0012] Optionally, each of the two slides is slidably connected to a slider, and each of the two sliders is provided with a placement groove. A main magnetic lock and a secondary magnetic lock are slidably connected to the two placement grooves respectively.

[0013] Optionally, a long cylinder is fixedly connected to one side of the slider. A limiting hole is provided on the long cylinder. The top of the limiting hole contacts the top of the spring. The top of the insertion post contacts the bottom of the spring. The insertion post is inserted into the insertion hole. A rotating cylinder is fixedly connected to the "L"-shaped rod. The "L"-shaped rod, the spring, and the insertion post are combined to form a positioning assembly.

[0014] Optionally, the slider has an insertion hole, the insertion hole is connected to a placement groove, and sliding strips are fixedly connected to the corresponding two sides of the placement groove. A fixed rod is rotatably connected to the insertion hole, and one end is rotatably connected to the placement groove. A gear is fixedly connected to the fixed rod, and a magnet is fixedly connected to the fixed rod.

[0015] Optionally, a groove is provided on the horizontal surface of the "L"-shaped column, the groove is slidably connected to the sliding bar, one end of the fixed rod is fixedly connected to a handle, a second magnet is embedded in the handle, the second magnet magnetically attracts the first magnet, and the "L"-shaped column, rack and groove are combined to form a sliding assembly.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] 1. This utility model achieves the advantage of fast and accurate positioning by simply pulling the "L"-shaped rod to compress the spring and insert the pin into one of the multiple insertion holes on the two fixed plates.

[0018] 2. In this utility model, rotating the throttle causes the gear and rack to mesh, allowing the sliding component to slide horizontally. This allows the sliding component to be positioned or retracted into the placement slot. Furthermore, the magnetic attraction between magnet one and magnet two enables quick assembly and disassembly of the main magnetic lock and the auxiliary magnetic lock. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the disassembled structure of the fixing plate, slider and main magnetic lock in the embodiment of this application;

[0020] Figure 2 This is an embodiment of the present application. Figure 1 A magnified schematic diagram of the structure at point A;

[0021] Figure 3 This is a schematic diagram of the overall structure in an embodiment of this application;

[0022] Figure 4 This is a cross-sectional view of the positioning mechanism in an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the sliding mechanism structure in an embodiment of this application.

[0024] Reference numerals in the attached diagram: 1. Fixing plate; 100. Slide groove one; 101. Magnet one; 102. Insertion hole one; 2. Slider; 20. Placement groove; 21. Sliding bar; 22. Insertion hole; 3. Main magnetic lock; 4. Sliding assembly; 40. "L" shaped post; 41. Rack; 42. Slide groove; 5. Fixing rod; 50. Gear; 6. Turn handle; 7. Magnet two; 8. Long cylinder; 80. Limiting hole; 9. Positioning assembly; 90. "L" shaped rod; 900. Rotary cylinder; 91. Spring; 92. Insertion post; 11. Secondary magnetic lock. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This application discloses a door magnetic sensor.

[0027] like Figure 1-5 As shown, a door magnetic sensor includes a long cylinder 8 and a slider 2. The long cylinder 8 is provided with a positioning mechanism with an "L"-shaped rod 90 positioning function. The positioning mechanism includes a spring 91. One end of the "L"-shaped rod 90 is fixedly connected to a post 92, and the spring 91 is sleeved on the post 92.

[0028] The slider 2 is provided with a sliding mechanism that has the function of sliding the gear 50. The sliding mechanism includes a rack 41, the gear 50 meshes with the rack 41, and the rack 41 is located on the horizontal plane of the "L" shaped column 40.

[0029] Please see Figure 1 and Figure 3 It also includes two fixing plates 1, each of which has a sliding groove 100. Multiple insertion holes 102 are equally spaced on the bottom of the fixing plate 1. A slot is formed on the inner side of the sliding groove 100, and a magnet 101 is embedded in the slot. The multiple insertion holes 102 on the two fixing plates 1 are symmetrical.

[0030] Please see Figure 1 and Figure 3 Both of the two slide grooves 100 are slidably connected to sliders 2, and both sliders 2 are provided with placement grooves 20. The main magnetic lock 3 and the auxiliary magnetic lock 11 are slidably connected to the two placement grooves 20 respectively.

[0031] Please see Figure 3 and Figure 4 A long cylinder 8 is fixedly connected to one side of the slider 2. A limiting hole 80 is provided on the long cylinder 8. The top of the limiting hole 80 contacts the top of the spring 91, and the top of the insertion post 92 contacts the bottom of the spring 91. The insertion post 92 is inserted into the insertion hole 102. A rotating cylinder 900 is fixedly connected to the "L"-shaped rod 90. The "L"-shaped rod 90, the spring 91, and the insertion post 92 are combined to form a positioning component 9. When the rotating cylinder 900 is lifted upward, the rotating cylinder 900 drives the "L"-shaped rod 90 and the insertion post 92 to move upward. The insertion post 92 rises in the limiting hole 80, causing the spring 91 to compress. When the rotating cylinder 900 is released, the spring 91 rebounds, causing the insertion post 92 to be pressed down into one of the insertion holes 102.

[0032] Please see Figure 2 The slider 2 has an insertion hole 22, which is connected to a placement groove 20. Sliding strips 21 are fixedly connected to the two sides of the placement groove 20. A fixed rod 5 is rotatably connected to the insertion hole 22, and one end is rotatably connected to the placement groove 20. A gear 50 is fixedly connected to the fixed rod 5, and a magnet 7 is fixedly connected to the fixed rod 5.

[0033] Please see Figure 2 The "L"-shaped column 40 has a sliding groove 42 on its horizontal surface. The sliding groove 42 is slidably connected to the sliding strip 21. One end of the fixed rod 5 is fixedly connected to a handle 6. A second magnet 7 is embedded in the handle 6. The second magnet 7 magnetically attracts a first magnet 101. The "L"-shaped column 40, the rack 41 and the sliding groove 42 are combined to form a sliding assembly 4.

[0034] The implementation principle of a door magnetic sensor in this application embodiment is as follows:

[0035] The method for adjusting the distance between the main magnetic lock 3 and the auxiliary magnetic lock 11 on the fixed plate 1 is as follows:

[0036] Slide slider 2 on slide groove 100. When it slides above one of the insertion holes 102, lift the rotating drum 900. The rotating drum 900 drives the "L"-shaped rod 90 and the insertion post 92 to move upward. The insertion post 92 rises in the limiting hole 80, which compresses the spring 91. When the rotating drum 900 is released, the spring 91 rebounds and pushes the insertion post 92 down into one of the insertion holes 102.

[0037] The process for positioning the main magnetic lock 3 within the slider 2 is as follows:

[0038] First, slide the main magnetic lock 3 into the placement groove 20 and attach it to the inner surface of one side of the slider 2. Then rotate the handle 6. The handle 6 drives the fixed rod 5 and the gear 50 to rotate. The rotation of the gear 50 causes the slide groove 42 to move horizontally. The slide groove 42 drives the sliding component 4 to slide out and be tightly attached to the other side of the main magnetic lock 3. At the same time, the magnet 2 7 magnetically attracts the magnet 101 to complete the positioning and installation of the main magnetic lock 3.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A door magnetic sensor characterized by: Includes a long cylinder (8) and a slider (2). The long cylinder (8) is provided with a positioning mechanism with an "L"-shaped rod (90) positioning function. The positioning mechanism includes a spring (91). One end of the "L"-shaped rod (90) is fixedly connected to a plug (92). The plug (92) is fitted with a spring (91). The slider (2) is provided with a sliding mechanism with a gear (50) sliding function. The sliding mechanism includes a rack (41), the gear (50) meshes with the rack (41), and the rack (41) is located on the horizontal plane of the "L" shaped column (40).

2. A door magnetic sensor according to claim 1, characterized in that: It also includes two fixing plates (1), each of which has a sliding groove (100). Multiple insertion holes (102) are equally spaced on the bottom of the fixing plate (1). A slot is provided on the inner side of the sliding groove (100), and a magnet (101) is embedded in the slot.

3. A door magnetic sensor according to claim 2, characterized in that: Sliding blocks (2) are slidably connected in the sliding grooves (100) on both fixed plates (1). Placement slots (20) are opened on both sliding blocks (2). A main magnetic lock (3) and a secondary magnetic lock (11) are slidably connected in the two placement slots (20).

4. A door magnetic sensor according to claim 1, characterized in that: A long cylinder (8) is fixedly connected to one side of the slider (2). A limiting hole (80) is opened on the long cylinder (8). The top of the limiting hole (80) contacts the top of the spring (91). The top of the insert (92) contacts the bottom of the spring (91). The insert (92) is inserted into the first insertion hole (102). A rotating cylinder (900) is fixedly connected to the "L"-shaped rod (90). The "L"-shaped rod (90), the spring (91) and the insert (92) are combined to form a positioning assembly (9).

5. A door magnetic sensor according to claim 1, characterized in that: The slider (2) has an insertion hole (22) and the insertion hole (22) is connected to a placement groove (20). The placement groove (20) is fixedly connected to two sides of the corresponding sliding strip (21). A fixed rod (5) is rotatably connected in the insertion hole (22) and one end is rotatably connected to the placement groove (20). A gear (50) is fixedly connected to the fixed rod (5), and a magnet (7) is fixedly connected to the fixed rod (5).

6. A door magnetic sensor according to claim 5, characterized in that: The "L"-shaped column (40) has a groove (42) on its horizontal surface. The groove (42) is slidably connected to the sliding strip (21). One end of the fixed rod (5) is fixedly connected to a handle (6). A second magnet (7) is embedded in the handle (6). The second magnet (7) magnetically attracts a first magnet (101). The "L"-shaped column (40), the rack (41) and the groove (42) are combined to form a sliding assembly (4).