Anti-false alarm intelligent door magnetic sensor with distance adjusting function

Abstract

The utility model relates to the technical field of intelligent door magnetic sensors, in particular to a false alarm prevention intelligent door magnetic sensor with a distance adjusting function, which comprises a door frame, an opening and closing door is rotatably connected in the door frame, a permanent magnet is fixedly connected on the side wall of the door frame, and a door magnetic sensor body is arranged on the side wall of the opening and closing door. An adjusting mechanism used for adjusting the distance between the door magnetic sensor body and the permanent magnet is arranged on the side wall of the door magnetic sensor body and comprises a sliding rail fixedly connected to the side wall of the opening and closing door, a sliding rail block is slidably connected to the outer wall of the sliding rail, and two rotating wheels are rotationally connected to the top and the bottom of the inner wall of the sliding rail block correspondingly. Compared with the prior art, the situation that due to the fact that the distance between the magnetic inductor body and the permanent magnet is too short, the magnetic inductor is too sensitive, and misinformation occurs is avoided, the opening and closing state of the opening and closing door can be accurately detected, the possibility of misinformation is greatly reduced, and the reliability of a security and protection system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent door magnetic sensors, in particular to an anti-false alarm intelligent door magnetic sensor with a distance adjustment function. Background Art

[0002] The door magnetic sensor is a security alarm system device that is mainly used to detect whether objects such as doors, windows, drawers, etc. are illegally opened or moved, and to sound an alarm when necessary. The door magnetic sensor usually consists of two parts: a smaller permanent magnet and a sensor consisting of a reed switch sensor. The permanent magnet is usually installed on the door frame, and the sensor is installed on the door. When the door is closed, the permanent magnet is close to the sensor, and the reed switch in the sensor is closed due to the magnetic force, forming a closed loop. At this time, the entire door magnetic system is in working condition and will send a signal to the host to indicate that the door is closed. At the same time, through the distance adjustment function, it can effectively prevent false alarms caused by the influence of external environment or objects.

[0003] The Chinese patent discloses: a door magnetic sensor, patent application number: 202021932938.4, which "includes a sensor body, a permanent magnet and a host, a plurality of heat dissipation holes are fixedly opened at the lower end of the front end surface of the sensor body, and two battery slots are fixedly opened on the right side of the front end surface of the sensor body, and spring clips and conductive metal heads are fixedly arranged at both ends of the two battery slots, and batteries are fixedly arranged in the two battery slots, and a reed switch is fixedly arranged on the side of the sensor body close to the permanent magnet".

[0004] Although the door magnetic sensor can be easily installed and disassembled, and is relatively concealed and not easy to find, the sensor adopts a fixed distance design and cannot be flexibly adjusted according to the actual application scenario. As a result, in actual applications, the door magnetic sensor and the permanent magnet are too close, causing oversensitivity, and being easily affected by wind, vibration or other external factors. The fixed-distance door magnetic sensor may give false alarms and cannot accurately detect the opening and closing status of the door. These interference factors greatly increase the possibility of false alarms and reduce the reliability of the security system. Utility Model Content

[0005] In view of this, the purpose of the utility model is to propose an anti-false alarm intelligent door magnetic sensor with a distance adjustment function to solve the problem that it cannot be flexibly adjusted according to the actual application scenario. In actual applications, due to the influence of wind, vibration or other external factors, the traditional fixed-distance door magnetic sensor sometimes has false alarms and cannot accurately detect the opening and closing status of the door.

[0006] Based on the above purpose, the utility model provides an anti-false alarm intelligent door magnetic sensor with a distance adjustment function, including a door frame, the internal rotation of the door frame is connected to an opening and closing door, the side wall of the door frame is fixedly connected to a permanent magnet, the side wall of the opening and closing door is provided with a door magnetic sensor body, and the side wall of the door magnetic sensor body is provided with an adjustment mechanism for adjusting the distance between the door magnetic sensor body and the permanent magnet.

[0007] Preferably, the adjustment mechanism includes a slide rail fixedly connected to the side wall of the opening and closing door, the outer wall of the slide rail is slidably connected to a slide rail block, the top and bottom of the inner wall of the slide rail block are respectively rotatably connected to two rotating wheels, the outer wall of the rotating wheel contacts the inner wall of the slide rail, the bottom of the inner wall of the slide rail is provided with equidistant and evenly distributed limiting grooves, connecting grooves are provided on both sides of the slide rail block, the top and bottom of the connecting groove are connected to the outer wall of the slide rail block, a rotating rod is rotatably connected between the bottom of the inner wall of the connecting groove, and the outer walls of both ends of the rotating rod are fixedly connected with offset A core elliptical block, a first rack is slidably connected to the inside of the communicating groove, a telescopic spring is fixedly connected to the side wall of the first rack, one end of the telescopic spring is fixedly connected to the inner wall of the communicating groove, a transmission gear is rotatably connected to the top of the communicating groove, the side wall of the first rack is meshed with the outer wall of the transmission gear, a second rack is provided on the other side of the transmission gear, the second rack is slidably connected to the top of the communicating groove and meshed with the outer wall of the transmission gear, a limiting column is fixedly connected to the bottom of the second rack, and one end of the limiting column extends into the limiting groove.

[0008] Preferably, one end of the rotating rod passes through the outer wall of the slide rail block, the outer wall of the rotating rod is slidably connected with a sliding rotating plate, and a receiving groove is provided on a side of the slide rail block close to the sliding rotating plate.

[0009] Preferably, one end of the first rack is arc-shaped and contacts the outer wall of the eccentric elliptical block.

[0010] Preferably, the first rack is in a "Z" shape.

[0011] Preferably, the limiting column and the limiting groove are on the same vertical line.

[0012] Preferably, the outer wall of the sliding and rotating plate is matched with the inner wall of the accommodating groove.

[0013] The beneficial effects of the utility model are as follows: by pushing the door magnetic sensor body, the door magnetic sensor body drives the slide rail block to move on the slide rail. When it is adjusted to a suitable position, the sliding rotating plate drives the rotating rod to rotate 90°, and then the rotating rod drives the eccentric elliptical block to rotate and squeeze the first rack on the top, and then the first rack will slide in the connecting groove and squeeze the telescopic spring, and then when the first rack moves upward, it will drive the transmission gear to rotate, and when the transmission gear rotates, it will drive the second rack to move downward. At this time, one end of the second rack will drive the limit column to move downward and insert into the limit groove to fix the slide rail block, thereby completing the distance adjustment between the door magnetic sensor body and the permanent magnet, which is convenient for flexible adjustment according to actual application scenarios, avoiding the situation where the distance between the magnetic sensor body and the permanent magnet is too close, resulting in excessive sensitivity, and being easily affected by false alarms due to other factors such as wind and vibration, and can accurately detect the switch state of the opening and closing door, and then these interference factors greatly reduce the possibility of false alarms and improve the reliability of the security system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the door magnetic sensor body of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the slide rail block of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the eccentric elliptical block and the first rack of the utility model;

[0019] Figure 5 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0020] The markings in the figure are:

[0021] 1. Door frame; 2. Opening and closing door; 3. Permanent magnet; 4. Slide rail; 5. Slide rail block; 6. Rotating wheel; 7. Limiting groove; 8. Connecting groove; 9. Rotating rod; 10. Eccentric elliptical block; 11. First rack; 12. Telescopic spring; 13. Transmission gear; 14. Second rack; 15. Limiting column; 16. Sliding rotating plate; 17. Receiving groove; 18. Door magnetic sensor body. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] like Figures 1 to 5 As shown, an anti-false alarm intelligent door magnetic sensor with a distance adjustment function includes a door frame 1, an opening and closing door 2 is rotatably connected inside the door frame 1, a permanent magnet 3 is fixedly connected to the side wall of the door frame 1, a door magnetic sensor body 18 is provided on the side wall of the opening and closing door 2, and an adjustment mechanism for adjusting the distance between the door magnetic sensor body 18 and the permanent magnet 3 is provided on the side wall of the door magnetic sensor body 18.

[0025] For further information, see Attachment Figures 1 to 4As shown, the adjustment mechanism includes a slide rail 4 fixedly connected to the side wall of the opening and closing door 2, the outer wall of the slide rail 4 is slidably connected to a slide rail block 5, the top and bottom of the inner wall of the slide rail block 5 are respectively rotatably connected to two rotating wheels 6, the outer wall of the rotating wheel 6 contacts the inner wall of the slide rail 4, the bottom of the inner wall of the slide rail 4 is provided with equidistant and evenly distributed limiting grooves 7, both sides of the slide rail block 5 are provided with connecting grooves 8, the top and bottom of the connecting groove 8 are connected to the outer wall of the slide rail block 5, a rotating rod 9 is rotatably connected between the bottom of the inner wall of the connecting groove 8, the outer walls of both ends of the rotating rod 9 are fixedly connected to eccentric elliptical blocks 10, the inside of the connecting groove 8 is slidably connected to a first rack 11, The first rack 11 is in a "Z" shape, and a telescopic spring 12 is fixedly connected to the side wall of the first rack 11, one end of the telescopic spring 12 is fixedly connected to the inner wall of the connecting groove 8, and a transmission gear 13 is rotatably connected to the top of the connecting groove 8. The side wall of the first rack 11 is meshed with the outer wall of the transmission gear 13, and a second rack 14 is provided on the other side of the transmission gear 13. The second rack 14 is slidably connected to the top of the connecting groove 8 and meshed with the outer wall of the transmission gear 13, and the bottom of the second rack 14 is fixedly connected to a limiting column 15, the limiting column 15 and the limiting groove 7 are on the same vertical line, and one end of the limiting column 15 extends into the limiting groove 7;

[0026] When the adjustment mechanism is in use, the door magnetic sensor body 18 is first pushed, and the door magnetic sensor body 18 drives the slide rail block 5 to move on the slide rail 4. When it is adjusted to a suitable position, the sliding rotating plate 16 is rotated to drive the rotating rod 9 to rotate 90°, and then the rotating rod 9 drives the eccentric elliptical block 10 to rotate and squeeze the first rack 11 at the top, and then the first rack 11 will slide in the connecting groove 8 and squeeze the telescopic spring 12, and then the first rack 11 will drive the transmission gear 13 to rotate when it moves upward, and when the transmission gear 13 rotates, it will drive the second rack 14 to move downward, and at this time, one end of the second rack 14 will drive the limiting column 15 to move downward and insert into the limiting groove 7 from The slide block 5 is fixed, and then the sliding rotating plate 16 is pushed. After the sliding rotating plate 16 and the receiving groove 17 are in the same vertical line, the sliding rotating plate 16 will enter the receiving groove 17, thereby limiting the rotating rod 9, preventing the rotating rod 9 from rotating and causing the limiting column 15 to be separated from the limiting groove 7, thereby completing the distance adjustment between the door magnetic sensor body 18 and the permanent magnet 3, thereby ensuring that the slide block 5 is firmly fixed in the required position. This precise adjustment and fixing mechanism greatly improves the accuracy and reliability of the door magnetic sensor, avoids false alarms caused by other factors such as wind and vibration, and improves the overall performance of the security system.

[0027] For further information, see Attachment Figure 5As shown, one end of the rotating rod 9 passes through the outer wall of the slide block 5, and the outer wall of the rotating rod 9 is slidably connected with a sliding rotating plate 16. A receiving groove 17 is provided on the side of the slide block 5 close to the sliding rotating plate 16. The outer wall of the sliding rotating plate 16 and the inner wall of the receiving groove 17 are adapted to each other. By pushing the sliding rotating plate 16, when the sliding rotating plate 16 and the receiving groove 17 are in the same vertical line, the sliding rotating plate 16 will enter the receiving groove 17, thereby limiting the rotating rod 9 to prevent the rotating rod 9 from rotating and causing the limiting column 15 to disengage from the limiting groove 7.

[0028] For further information, see Attachment Figure 4 As shown, one end of the first rack 11 is arc-shaped and contacts the outer wall of the eccentric elliptical block 10 . The shape of one end of the first rack 11 facilitates the eccentric elliptical block 10 to push the first rack 11 upward.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0030] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An anti-false alarm intelligent door magnetic sensor with distance adjustment function, characterized in that: The invention comprises a door frame (1), an opening and closing door (2) being rotatably connected to the interior of the door frame (1), a permanent magnet (3) being fixedly connected to the side wall of the door frame (1), a door magnetic sensor body (18) being provided on the side wall of the opening and closing door (2), and an adjustment mechanism for adjusting the distance between the door magnetic sensor body (18) and the permanent magnet (3) being provided on the side wall of the door magnetic sensor body (18).

2. The anti-false alarm intelligent door magnetic sensor with distance adjustment function according to claim 1 is characterized in that: The adjustment mechanism comprises a slide rail (4) fixedly connected to the side wall of the opening and closing door (2); the outer wall of the slide rail (4) is slidably connected to a slide rail block (5); the top and bottom of the inner wall of the slide rail block (5) are rotatably connected to two rotating wheels (6), the outer wall of the rotating wheel (6) is in contact with the inner wall of the slide rail (4); the bottom of the inner wall of the slide rail (4) is provided with equidistant and evenly distributed limiting grooves (7); both sides of the slide rail block (5) are provided with connecting grooves (8); the top and bottom of the connecting groove (8) are connected to the outer wall of the slide rail block (5); a rotating rod (9) is rotatably connected between the bottom of the inner wall of the connecting groove (8); the outer walls of both ends of the rotating rod (9) are fixedly connected to eccentric elliptical blocks (10); the connecting groove A first rack (11) is slidably connected to the interior of the connecting groove (8), a telescopic spring (12) is fixedly connected to the side wall of the first rack (11), one end of the telescopic spring (12) is fixedly connected to the inner wall of the connecting groove (8), a transmission gear (13) is rotatably connected to the top of the connecting groove (8), the side wall of the first rack (11) and the outer wall of the transmission gear (13) are meshed with each other, a second rack (14) is provided on the other side of the transmission gear (13), the second rack (14) is slidably connected to the top of the connecting groove (8) and is meshed with the outer wall of the transmission gear (13), the bottom of the second rack (14) is fixedly connected to a limiting column (15), one end of the limiting column (15) extends into the limiting groove (7).

3. The anti-false alarm intelligent door magnetic sensor with distance adjustment function according to claim 2 is characterized in that: One end of the rotating rod (9) passes through the outer wall of the slide rail block (5); the outer wall of the rotating rod (9) is slidably connected to a sliding rotating plate (16); and a receiving groove (17) is provided on a side of the slide rail block (5) close to the sliding rotating plate (16).

4. The anti-false alarm intelligent door magnetic sensor with distance adjustment function according to claim 2, characterized in that: One end of the first rack (11) is in an arc shape and contacts the outer wall of the eccentric elliptical block (10).

5. The anti-false alarm intelligent door magnetic sensor with distance adjustment function according to claim 2, characterized in that: The first rack (11) is in a "Z" shape.

6. The anti-false alarm intelligent door magnetic sensor with distance adjustment function according to claim 2, characterized in that: The limiting column (15) and the limiting groove (7) are located on the same vertical line.

7. The anti-false alarm intelligent door magnetic sensor with distance adjustment function according to claim 3, characterized in that: The outer wall of the sliding rotating plate (16) is adapted to the inner wall of the containing groove (17).

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