Suspended door with earth leakage protection function

By employing a non-contact levitation design combining electromagnetic and permanent magnet components and a buffer structure, the noise problem of the suspended door is solved. Furthermore, the user experience and safety of the suspended door are enhanced through leakage protection and emergency stop functions.

CN223975051UActive Publication Date: 2026-03-06TIANJIN XUBAO XINGSHENG ELECTRIC DOOR CO LTD
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Patent Information

Application Number
CN202520067610.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-13
Publication Date
2026-03-06
Estimated Expiration
2035-01-13

AI Technical Summary

Technical Problem

Existing suspended doors generate significant noise due to friction during use, affecting the user experience and posing a risk of electric shock in case of electrical leakage.

Method used

The interaction between the electromagnetic block and the permanent magnet plate achieves contactless levitation. Combined with the design of buffer springs, buffer rubber blocks and heat-insulating contact strips, friction noise is reduced, and safety protection is achieved through components such as leakage current protectors and emergency stop buttons.

Benefits of technology

It effectively reduces operating noise, improves quietness and smoothness of use, while ensuring safety and reliability, and provides real-time operation status information and emergency handling functions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of suspension doors, and discloses a suspension door with a leakage protection function, which comprises a bottom plate, side protection plates are fixedly mounted on two sides of the top of the bottom plate, a top plate is fixedly connected to the tops of the side protection plates, and limiting frame plates are fixedly mounted on two sides of the inner surfaces of the bottom plate and the top plate. An electromagnetic block is fixedly installed on the bottom face of the inner side of the limiting frame plate, and a permanent magnet plate is arranged on the inner side of the limiting frame plate and located on the outer side of the electromagnetic block. According to the utility model, the movable door body can suspend in the limiting frame plate under the non-contact condition through the interaction between the electromagnetic block and the permanent magnet plate, and the design eliminates the physical contact and friction between the roller and the track in the traditional retractable door, so that the noise during operation is greatly reduced. Meanwhile, due to the fact that no bottom rail exists, the problems of extra friction and noise caused by dust accumulation are avoided, and the using quietness and smoothness are further improved.
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Description

Technical Field

[0001] This utility model relates to the field of suspended door technology, and more specifically, to a suspended door with leakage protection function. Background Technology

[0002] A cantilever door is a type of door that does not require a bottom track or rollers. It opens and closes using electromagnetic force or other forms of non-contact support and guidance mechanisms. This type of door is commonly found in high-tech buildings, modern residences, and places that require a highly clean environment, such as hospital operating rooms or electronics manufacturing workshops.

[0003] For example, a retractable gate with leakage current protection function, disclosed in publication number CN216197763U, has a drive mechanism at the gate head, with the front end of the retractable gate body connected to the gate head and the rear end of the retractable gate body connected to the gate tail. The primary coil of the isolation transformer T0 of the safety power protection device is electrically connected to the mains power, the secondary coil of the isolation transformer T0 is electrically connected to the input terminal of the switching power supply, and the output terminal of the switching power supply is electrically connected to the power input terminal of the power consumption detection module. The signal input terminal of the power consumption detection module and the input terminal of the main switch are connected in parallel and then electrically connected to the secondary coil of the isolation transformer T0. The output terminal of the main switch is electrically connected to the wiring terminal of the drive mechanism, and the signal output terminal of the power consumption detection module is electrically connected to the control terminal of the main switch. The power consumption detection module is used to detect whether there is an abnormality in the circuit of the retractable gate and disconnect the main switch when an abnormality occurs. This utility model solves the problem of easy electric shock when people touch the retractable gate when the circuit is leaking current.

[0004] However, based on the working principle proposed in the aforementioned patent, the applicant believes that although the device can reduce the problem of electric shock to a certain extent, in actual use, the retractable gate causes significant noise pollution due to friction, which can affect the user experience to some extent. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a suspended door with leakage protection function, which has the advantage of less noise impact.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a suspended door with leakage protection function, comprising a base plate, side guard plates fixedly installed on both sides of the top of the base plate, a top plate fixedly connected to the top of the side guard plates, limit frame plates fixedly installed on both sides of the inner surface of the base plate and the top plate, an electromagnetic block fixedly installed on the bottom surface of the inner side of the limit frame plate, a permanent magnet plate provided on the inner side of the limit frame plate and outside the electromagnetic block, a movable door body fixedly connected to the inner side of the permanent magnet plate, and fixing holes provided on both sides of the surface of the base plate and the top plate.

[0007] Both ends of the inner side of the limiting frame plate are fixedly installed with buffer springs, and the other end of the buffer springs is fixedly connected to a contact plate.

[0008] A buffer rubber block is fixedly installed on the inner side of the side guard plate, and a heat-insulating contact strip is provided on the contact surface of the movable door body.

[0009] As a preferred embodiment of this utility model, a control box is fixedly installed on one side of the front of the side guard plate, and a protective door is movably installed on the surface of the control box.

[0010] As a preferred embodiment of this utility model, a leakage current protector is fixedly installed inside the control box, and a connecting wire is fixedly installed on the surface of the leakage current protector.

[0011] As a preferred embodiment of this utility model, the surface of the protective door is provided with a display panel, and a pull ring is fixedly installed on one side of the display panel.

[0012] As a preferred embodiment of this utility model, an emergency stop button is provided on the other side of the display panel, an alarm buzzer is fixedly installed on the top of the emergency stop button, and a warning light is fixedly installed on the bottom of the emergency stop button.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model utilizes the interaction between the electromagnetic block and the permanent magnet plate, allowing the movable door body to suspend within the limiting frame plate without contact. This design eliminates the physical contact and friction between the rollers and the track in traditional telescopic doors, thus greatly reducing operating noise. Furthermore, the absence of a bottom track avoids additional friction and noise issues caused by dust accumulation, further enhancing quietness and smoothness of operation. On the other hand, the presence of the limiting frame plate ensures the lateral stability of the movable door body in its suspended state, preventing it from shifting or shaking during opening and closing, guaranteeing a smooth operating experience. The overall design not only solves the noise problem but also improves the reliability and service life of the door.

[0015] 2. This utility model, through the setting of buffer spring, can provide a buffering effect when the sliding door body is impacted, reducing the impact force; through the setting of buffer rubber block, an additional buffer layer can be formed on the inner side of the side guard plate; through the setting of thermal insulation contact strip, good sealing can be provided when the sliding door body closes; through the setting of control box, the electrical control system of the sliding door can be centrally managed; through the setting of leakage current protector, the circuit can be quickly cut off when current leakage is detected; through the setting of display panel, real-time operation status information can be provided to the user; through the setting of emergency stop button, the operation of the sliding door can be stopped immediately in an emergency; through the setting of alarm buzzer, an audible alarm can be sounded when the emergency stop button is pressed or other abnormal situations occur; through the setting of warning light, it can be lit when the emergency stop button is activated, providing a visual warning signal. Attached Figure Description

[0016] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a rear-view perspective view of the overall structure of this utility model;

[0018] Figure 3 This is a partially enlarged three-dimensional schematic diagram of the movable door body structure of this utility model;

[0019] Figure 4 This is a partially enlarged three-dimensional cross-sectional view of the limiting frame plate and side guard plate structure of this utility model;

[0020] Figure 5 This is a partially enlarged three-dimensional schematic diagram of the control box structure of this utility model;

[0021] Figure 6 This is a partially enlarged three-dimensional cross-sectional view of the control box structure of this utility model.

[0022] In the diagram: 1. Base plate; 2. Side guard plate; 3. Top plate; 4. Limiting frame plate; 5. Electromagnetic block; 6. Permanent magnet plate; 7. Movable door body; 8. Fixing hole; 9. Buffer spring; 10. Contact plate; 11. Buffer rubber block; 12. Thermal insulation contact strip; 13. Control box; 14. Protective door; 15. Residual current device; 16. Connecting wire; 17. Display panel; 18. Pull ring; 19. Emergency stop button; 20. Alarm buzzer; 21. Warning light. Detailed Implementation

[0023] 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.

[0024] like Figures 1 to 6 As shown, this utility model provides a suspended door with leakage protection function, including a base plate 1, side guard plates 2 are fixedly installed on both sides of the top of the base plate 1, a top plate 3 is fixedly connected to the top of the side guard plates 2, a limit frame plate 4 is fixedly installed on both sides of the inner surface of the base plate 1 and the top plate 3, an electromagnetic block 5 is fixedly installed on the bottom surface of the inner side of the limit frame plate 4, a permanent magnet plate 6 is provided on the inner side of the limit frame plate 4 and outside the electromagnetic block 5, a movable door body 7 is fixedly connected to the inner side of the permanent magnet plate 6, and fixing holes 8 are provided on both sides of the surface of the base plate 1 and the top plate 3.

[0025] Both ends of the inner side of the limiting frame plate 4 are fixedly installed with buffer springs 9, and the other end of the buffer springs 9 is fixedly connected to a contact plate 10.

[0026] The buffer spring 9 provides a cushioning effect when the movable door body 7 is impacted, reducing the impact force.

[0027] A buffer rubber block 11 is fixedly installed on the inner side of the side guard plate 2, and a heat-insulating contact strip 12 is provided on the contact surface of the movable door body 7.

[0028] By setting the buffer rubber block 11, an additional buffer layer can be formed on the inside of the side guard plate 2. By setting the heat-insulating contact strip 12, good sealing can be provided when the movable door body 7 is closed.

[0029] Among them, a control box 13 is fixedly installed on one side of the front of the side guard plate 2, and a protective door 14 is movably installed on the surface of the control box 13.

[0030] The electrical control system of the suspended gate can be centrally managed by setting up control box 13.

[0031] The control box 13 has a residual current device 15 fixedly installed inside, and a connecting wire 16 is fixedly installed on the surface of the residual current device 15.

[0032] With the setting of the leakage current protector 15, the circuit can be quickly cut off when current leakage is detected.

[0033] The protective door 14 has a display panel 17 on its surface, and a pull ring 18 is fixedly installed on one side of the display panel 17.

[0034] The display panel 17 can be configured to provide users with real-time operation status information.

[0035] An emergency stop button 19 is provided on the other side of the display panel 17. An alarm buzzer 20 is fixedly installed on the top of the emergency stop button 19, and a warning light 21 is fixedly installed on the bottom of the emergency stop button 19.

[0036] The emergency stop button 19 can be set to stop the operation of the suspended door immediately in an emergency. The alarm buzzer 20 can be set to sound an alarm when the emergency stop button 19 is pressed or other abnormal situations occur. The warning light 21 can be set to light up when the emergency stop button 19 is activated, providing a visual warning signal.

[0037] The working principle and usage process of this utility model are as follows: In this device, the base plate 1 provides a basic support platform for the suspended door, ensuring the stability and robustness of the entire door structure. The side guard plate 2 protects the two sides of the suspended door, preventing external objects from directly impacting the internal components and enhancing the overall safety performance. The top plate 3, together with the base plate 1, forms a closed space, providing installation positions for other components and strengthening structural stability. The limiting frame plate 4 creates a fixed magnetic field area, ensuring that the movable door body 7 achieves contactless suspension under the interaction of the electromagnetic block 5 and the permanent magnet plate 6, eliminating the friction between the rollers and tracks of traditional telescopic doors and reducing operating noise. The buffer spring 9 provides a buffering effect when the movable door body 7 is impacted, reducing the impact force and protecting the door and other components from damage. The contact plate 10 provides a soft contact surface, further reducing noise generated by collisions, while protecting the door surface from scratches. The buffer rubber block 11 absorbs external impact force, protecting internal components and reducing noise transmission. The heat-insulating contact strip 12 provides good sealing performance, maintaining indoor temperature and improving energy efficiency.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] 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 suspended door with electric leakage protection function, comprising a bottom plate (1), characterized in that: Both sides of top of bottom plate (1) are fixedly installed with side guard plate (2), top of side guard plate (2) is fixedly connected with top plate (3), both sides of inner side of bottom plate (1) and top plate (3) are fixedly installed with limit frame plate (4), bottom surface of inner side of limit frame plate (4) is fixedly installed with electromagnetic block (5), the inner side of limit frame plate (4) and located the outside of electromagnetic block (5) is provided with permanent magnet plate (6), the inner side of permanent magnet plate (6) is fixedly connected with movable door body (7), both sides of surface of bottom plate (1) and top plate (3) are provided with fixed hole (8); Both ends of inner side of limit frame plate (4) are fixedly installed with buffer spring (9), the other end of buffer spring (9) is fixedly connected with contact plate (10); The inner side of side guard plate (2) is fixedly installed with buffer rubber block (11), the contact surface of movable door body (7) is provided with heat preservation contact strip (12).

2. The suspended door with electric leakage protection function according to claim 1, characterized in that: The front side of side guard plate (2) is fixedly installed with control box (13), the surface of control box (13) is movably installed with protection door (14).

3. The door according to claim 2, wherein: The inner side of control box (13) is fixedly installed with leakage protector (15), the surface of leakage protector (15) is fixedly installed with power line (16).

4. The door according to claim 2, wherein: The surface of protection door (14) is provided with display panel (17), one side of display panel (17) is fixedly installed with pull ring (18).

5. The door according to claim 4, wherein: The other side of display panel (17) is provided with emergency stop button (19), the top of emergency stop button (19) is fixedly installed with alarm buzzer (20), the bottom of emergency stop button (19) is fixedly installed with warning light (21).

Citation Information

Patent Citations

  • Retractable door with earth leakage protection function

    CN216197763U