An electrically powered screening door
By combining the inner and outer blades in a double-layered blade groove structure with automated drive control, the problems of unstable shielding effectiveness and cumbersome operation of the shielding door are solved, achieving efficient electromagnetic shielding and a convenient operating experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LIDA ELECTROMAGNETIC SHIELDING TECHCO
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-03
AI Technical Summary
Existing shielding doors have poor shielding effectiveness and stability, insufficient structural compactness and ease of operation, and high maintenance costs.
It adopts a double-layer blade groove structure with inner and outer blades, and integrates automated drive and control components, including a beveled blade and spring design. The electrical control unit is combined with a touch screen, and the locking device is a motor-driven pin structure to ensure sealing and ease of operation.
It improves shielding performance, reduces the risk of electromagnetic leakage, simplifies operation procedures, and reduces maintenance and time costs.
Smart Images

Figure CN224452654U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shielding equipment technology, and in particular to an electric shielding door. Background Technology
[0002] As a core component of electromagnetic shielding systems, shielded doors are widely used in locations requiring electromagnetic radiation isolation, such as microwave anechoic chambers, classified computer rooms, and medical imaging rooms. Their structural design directly affects the shielding effectiveness. Traditional shielded doors have several structural limitations:
[0003] From a structural perspective, most shielding doors use a single-layer blade and groove combination, achieving sealing through only a single contact surface. When the blade or groove wears down due to long-term use, the shielding performance will significantly decrease. Furthermore, the blade is mostly a straight structure, resulting in poor fit with the groove, making it difficult to achieve tight contact through simple pushing, requiring repeated manual adjustments.
[0004] From the perspective of drive and control structure, the locking and pushing devices of traditional shielding doors are mostly designed separately, with scattered installation layouts. This not only occupies a lot of space, but also easily leads to action delays due to insufficient linkage, affecting the closing efficiency. At the same time, the electrical control components have low integration with the door structure, the operation interface is rudimentary, and it is impossible to intuitively display the equipment operating status, which brings inconvenience to daily maintenance.
[0005] In addition, the existing shielding door blades and springs lack a precise control structure. When the spring elasticity decays or the blade is pushed into the depth insufficient, it cannot be compensated by the mechanical structure. Manual adjustment is required, which increases maintenance and time costs.
[0006] To address the aforementioned issues, there is an urgent need for a compact, precisely fitted, and highly integrated electric shielding door. By optimizing the double-layer fit structure of the blade and groove, and integrating automated drive and control components, the sealing performance and ease of operation of the shielding door can be improved. Utility Model Content
[0007] The technical problem to be solved by this utility model is: in order to solve the problems of poor shielding effectiveness and cumbersome operation of the existing shielding door, this utility model provides an electric shielding door.
[0008] The technical solution adopted by this utility model to solve its technical problem is: an electric shielding door, comprising...
[0009] A door frame assembly includes a door frame body, an inner groove type, and an outer groove type; the inner groove type is disposed on the inner side of the door frame body, and the outer groove type is disposed on the outer side of the door frame body;
[0010] A door panel assembly includes an inner blade door panel and an outer blade door panel, wherein the inner blade door panel is provided with an inner blade edge and the outer blade door panel is provided with an outer blade edge;
[0011] The driving mechanism includes an inner blade pushing device and an outer blade pushing device. The inner blade pushing device is used to push the inner blade edge into the inner blade groove, and the outer blade pushing device is used to push the outer blade edge into the outer blade groove.
[0012] An electrical control unit includes a touch screen and a trigger switch, the trigger switch being located on the top of the door frame body;
[0013] The frequency calibration signal processing module includes a frequency calibration transmitter and a frequency calibration receiver, which are located inside and outside the equipment room, respectively, and are connected to the electrical control unit.
[0014] It also includes a side-pushing device and a locking device, wherein the side-pushing device is located below the door panel assembly, and the locking device is located at the connection between the door panel assembly and the door frame body.
[0015] Furthermore, both the inner and outer knife grooves are provided with springs, and both the inner and outer knife edges are beveled.
[0016] Furthermore, the angle range of the inner and outer cutting edges is 15°-30°.
[0017] Furthermore, the locking device is connected to a locking motor, which is controlled by an electrical control unit. The touch screen of the electrical control unit is used to set the required shielding effectiveness and can display the actual shielding effectiveness achieved to provide feedback on the system's operating status.
[0018] Furthermore, the locking device is a motor-driven pin structure with adjustable pin travel.
[0019] Furthermore, in the mating structure of the inner blade edge and the inner blade groove, and the outer blade edge and the outer blade groove, the spring is located in the groove. When the blade edge is pushed in, it contacts the spring. The pushing depth is controlled by the side pushing device to ensure the shielding effect.
[0020] The beneficial effects of this utility model are:
[0021] The electric shielding door described in this utility model has the following advantages compared to traditional shielding doors:
[0022] 1. Optimized structural fit for enhanced shielding performance: A double-layer blade groove structure with inner and outer blades is adopted. The inner and outer blade panels are respectively equipped with corresponding blade edges, grooves, and springs. This double sealing enhances the redundancy of electromagnetic shielding; even if a slight gap occurs in one layer, the other layer can still provide effective shielding. Some blade edges are designed with an angled structure, reducing alignment difficulties during insertion and improving the tightness of the fit with the groove. Combined with the elasticity of the springs, this further reduces the risk of electromagnetic leakage.
[0023] 2. Integrated design enhances ease of operation: The door frame integrates the door closing trigger switch, locking device, side push device, and electrical control mounting points. These components are systematically connected via door hinges and other structures, simplifying the overall layout and reducing space occupancy. The electrical control components are integrated with the touchscreen, allowing users to directly set shielding performance targets and view actual status on the touchscreen without needing to operate complex control buttons, thus improving human-machine interaction efficiency.
[0024] 3. Enhanced structural reliability and ease of maintenance: The stable connection between the door hinges and the side-push device ensures smooth door opening and closing, reducing the probability of mechanical failure; the symmetrical arrangement of the locking device ensures balanced force when closing the door, reducing the risk of component deformation. In addition, the modular design of the blade and groove allows individual components to be replaced independently after wear, without the need to disassemble the entire door, significantly reducing maintenance and time costs. Attached Figure Description
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] Figure 1 This is a schematic diagram of the electric shielding door according to a preferred embodiment of the present utility model;
[0027] Figure 2 This is a schematic diagram of the structure of the electric shielding door according to a preferred embodiment of the present invention;
[0028] Figure 3 This is a schematic diagram of the inner groove and inner cutting edge as described in a preferred embodiment of the present invention;
[0029] Figure 4 This is a schematic diagram of the shielding door in the open state according to a preferred embodiment of the present invention;
[0030] In the diagram, 1. Door frame assembly, 11. Door frame body, 12. Inner knife groove type, 13. Outer knife groove type, 2. Door panel assembly, 21. Inner knife door panel, 22. Outer knife door panel, 23. Inner knife blade, 24. Outer knife blade, 3. Drive mechanism, 31. Inner knife pushing device, 32. Outer knife pushing device, 4. Electrical control unit, 41. Touch screen, 42. Trigger switch, 5. Frequency calibration signal processing module, 6. Side pushing device, 7. Locking device, 8. Spring. Detailed Implementation
[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "horizontal", "top", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] like Figure 1-4 As shown, an electric platform screen door includes
[0035] The door frame assembly 1 includes a door frame body 11, an inner groove type 12, and an outer groove type 13; the inner groove type 12 is disposed on the inner side of the door frame body 11, and the outer groove type 13 is disposed on the outer side of the door frame body 11.
[0036] The door panel assembly 2 includes an inner blade door panel 21 and an outer blade door panel 22. The inner blade door panel 21 is provided with an inner blade edge 23, and the outer blade door panel 22 is provided with an outer blade edge 24.
[0037] The drive mechanism 3 includes an inner blade pushing device 31 and an outer blade pushing device 32. The inner blade pushing device 31 is used to push the inner blade edge 23 into the inner blade groove 12, and the outer blade pushing device 32 is used to push the outer blade edge 24 into the outer blade groove 13.
[0038] The electrical control unit 4 includes a touch screen 41 and a trigger switch 42, the trigger switch 42 being disposed on the top of the door frame body 11;
[0039] The frequency calibration signal processing module 5 includes a frequency calibration transmitter and a frequency calibration receiver, which are located inside and outside the equipment room, respectively, and are connected to the electrical control unit 4.
[0040] The door panel assembly 2 is equipped with a side-pushing device 6 and a locking device 7. The side-pushing device 6 is located below the door panel assembly 2, and the locking device 7 is located at the connection between the door panel assembly 2 and the door frame body 11.
[0041] Both the inner and outer blade grooves 12 and 13 are provided with spring plates 8, and both the inner and outer blade edges 23 and 24 are beveled. The bevel angle of the inner and outer blade edges 23 and 24 ranges from 15° to 30°.
[0042] The locking device 7 is connected to a locking motor, which is controlled by an electrical control unit 4. The touchscreen 41 of the electrical control unit 4 is used to set the required shielding effectiveness and can display the actual shielding effectiveness achieved to provide feedback on the system's operating status. The locking device 7 is a motor-driven pin structure with adjustable pin travel.
[0043] In the matching structure of the inner blade edge 23 and the inner blade groove 12, and the outer blade edge 24 and the outer blade groove 13, the spring 8 is located in the groove. When the blade edge is pushed in, it contacts the spring 8. The pushing depth is controlled by the side pushing device 6 to ensure the shielding effect.
[0044] In use, first fix the door hinge to the door frame body 11, then install the inner blade door panel 21 and the outer blade door panel 22; then install the inner blade edge 23, the outer blade edge 24 and the corresponding groove and spring 8 on the edge of the door panel; finally fix the locking device 7, the side push device 6, the trigger switch 42 and the electrical control components to the installation position of the door frame, connect the wiring and test the operation.
[0045] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.
[0046] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. An electrically powered screening door, characterised in that, include The door frame assembly (1) includes a door frame body (11), an inner groove type (12), and an outer groove type (13); the inner groove type (12) is disposed on the inner side of the door frame body (11), and the outer groove type (13) is disposed on the outer side of the door frame body (11); The door panel assembly (2) includes an inner knife door panel (21) and an outer knife door panel (22), wherein the inner knife door panel (21) is provided with an inner knife edge (23) and the outer knife door panel (22) is provided with an outer knife edge (24); The drive mechanism (3) includes an inner blade pushing device (31) and an outer blade pushing device (32). The inner blade pushing device (31) is used to push the inner blade edge (23) into the inner blade groove (12), and the outer blade pushing device (32) is used to push the outer blade edge (24) into the outer blade groove (13). The electrical control unit (4) includes a touch screen (41) and a trigger switch (42), the trigger switch (42) being disposed on the top of the door frame body (11); The frequency calibration signal processing module (5) includes a frequency calibration transmitter and a frequency calibration receiver, which are located inside and outside the equipment room, respectively, and are connected to the electrical control unit (4); The door panel assembly (2) includes a side-pushing device (6) and a locking device (7), wherein the side-pushing device (6) is located below the door panel assembly (2) and the locking device (7) is located at the connection between the door panel assembly (2) and the door frame body (11).
2. The motorized screening door of claim 1, wherein, Both the inner groove type (12) and the outer groove type (13) are provided with springs (8), and both the inner blade edge (23) and the outer blade edge (24) are beveled blade edges.
3. The electric shielding door according to claim 2, characterized in that, The inclination range of the inner cutting edge (23) and the outer cutting edge (24) is 15°-30°.
4. The motorized screening door of claim 1, wherein, The locking device (7) is connected to the locking motor, which is controlled by the electrical control unit (4). The touch screen (41) of the electrical control unit (4) is used to set the shielding effectiveness to be achieved and can display the actual shielding effectiveness to provide feedback on the system's operating status.
5. The motorized screening door of claim 1, wherein, The locking device (7) is a motor-driven pin structure with adjustable pin stroke.
6. The motorized screening door of claim 1, wherein, In the matching structure of the inner blade edge (23) and the inner blade groove (12), and the outer blade edge (24) and the outer blade groove (13), the spring (8) is located in the groove. When the blade edge is pushed in, it contacts the spring (8). The pushing depth is controlled by the side pushing device (6) to ensure the shielding effect.