Wide knife sealing structure for shielding door
By setting a slot with a width greater than the insertion tab in the slot of the shield door and a sealing air cushion with a width greater than the insert, combined with the air supply and exhaust devices, the automatic sealing of the shield door is realized, solving the problem of difficult sealing in the prior art, and improving the operation convenience and sealing effect.
Patent Information
- Application Number
- CN202422309557.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The existing shield doors need to be accurately aligned with the slot when closed, which makes it difficult to guarantee the sealing and inconvenient to operate.
A card slot with a width greater than the insertion tab is designed, and a sealed air cushion and an air supply device are installed in the card slot. The air cushion is sealed by airflow expansion and enclosing the insertion tab, combining the pressure sensing module and the air extraction device to achieve automatic sealing.
It improves the fault tolerance and sealing of the shield door closure, simplifies the operation process, and ensures effective sealing of the shield door.
Smart Images
Figure CN223136013U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screen doors, and particularly relates to a wide-knife sealing structure for a screen door. Background Art
[0002] A screen door is a door structure used for area isolation and signal blocking, mainly used for shielding cabinets, shielding computer rooms, etc. A clamping structure is adopted between the screen door and the door frame and is closed by a door lock. Slots are opened on the four sides of the door frame, and corresponding inserts are provided on the screen door.
[0003] For sealing consideration, generally the width of the slot provided on the door frame is small, which just matches the cross-sectional size of the insert of the screen door. This requires that the screen door needs to be accurately aligned with the slot when closed, with high precision requirements. Sometimes it is necessary to align multiple times to complete the clamping. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a wide-knife sealing structure for a screen door in view of the existing technical defects, so as to solve the problems raised in the above background art.
[0005] To solve the above technical problems, the utility model provides the following technical solutions: A wide-knife sealing structure for a screen door, including a door frame and a screen door. The door frame is provided with a slot, and the screen door is provided with an insert corresponding to the slot. The width of the slot is greater than the width of the insert. Sealing air cushions I and II are arranged on both sides of the inner wall of the slot. Among them, the sealing air cushion I is connected with an air inlet channel, and the air inlet channel is externally connected with an air supply device. A connection channel is opened between the sealing air cushion I and the sealing air cushion II.
[0006] Further, a plurality of sliding grooves are opened at the bottom of the slot. A pressure sensing module is laid at the bottom of the sliding groove. The pressure sensing module is connected with a spring, and the spring is connected with a sliding plate. The sliding plate is slidably matched with the sliding groove.
[0007] Further, the connection channel penetrates through the sliding groove and is blocked by the sliding plate.
[0008] Further, a through hole is opened on the sliding plate. In a state without external force interference, the sliding plate is supported by the spring, and the plane where the through hole is located is higher than the plane where the connection channel is located. At this time, the connection channel is blocked by the sliding plate and the air flow does not circulate. When the screen door is closed, the insert presses the sliding plate to the bottom of the sliding groove. At this time, the plane where the through hole is located drops to the plane where the connection channel is located, and the air flow circulates.
[0009] Further, the sealing air cushion II is communicated with a pressure chamber for detecting the internal pressure state after the sealing air cushion II is introduced with air flow.
[0010] Further, the pressure chamber is connected with an air outlet channel, and the air outlet channel is externally connected with an air extraction device.
[0011] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: by providing a card slot with a certain width, the present utility model facilitates the insertion when the shielding door is closed, improving the error tolerance rate. By providing a first sealing air cushion and a second sealing air cushion, and cooperating with an air supply device, a sealing environment can be created by wrapping both sides of the inserted piece after the inserted piece is inserted, ensuring the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:
[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0014] Figure 2 is a partial cross-sectional view of the present utility model;
[0015] Figure 3 is a partial schematic diagram of the present utility model;
[0016] In the figure: 1, door frame; 2, card slot; 21, sliding groove; 3, first sealing air cushion; 4, second sealing air cushion; 5, air inlet channel; 6, air supply device; 7, connection channel; 8, pressure sensing module; 9, spring; 10, sliding plate; 11, through hole; 12, pressure chamber; 13, air outlet channel; 14, air extraction device. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following further describes in detail the technical solution of the present utility model in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0018] Please refer to Figures 1-3 , the present utility model provides a technical solution: a wide-knife sealing structure for a shielding door, including a door frame 1 and a shielding door (not shown in the figure). The door frame 1 is provided with a card slot 2, and the shielding door is provided with an inserted piece corresponding to the card slot 2. The width of the card slot 2 is greater than the width of the inserted piece. Both sides of the inner wall of the card slot 2 are provided with a first sealing air cushion 3 and a second sealing air cushion 4. Among them, the first sealing air cushion 3 is connected with an air inlet channel 5, the air inlet channel 5 is externally connected with an air supply device 6, and a connection channel 7 is provided between the first sealing air cushion 3 and the second sealing air cushion 4.
[0019] It should be noted that the air supply device 6 is used to introduce air flow into the first sealing air cushion 3. When the air flow passes through the connecting channel 7, it will deliver air flow to the second sealing air cushion 4. After the first sealing air cushion 3 and the second sealing air cushion 4 are simultaneously filled with air flow and expand, when the insert piece of the shielding door is inserted into the card slot 2, the first sealing air cushion 3 and the second sealing air cushion 4 will wrap both sides of the insert piece to create a sealed environment, ensuring the sealing performance after the door frame 1 and the shielding door are closed while facilitating the insertion of the insert piece into the wide card slot 2.
[0020] A plurality of sliding grooves 21 are provided at the bottom of the card slot 2. A pressure sensing module 8 is laid at the bottom of the sliding grooves 21. The pressure sensing module 8 is connected with a spring 9. The spring 9 is connected with a sliding plate 10. The sliding plate 10 is in sliding fit with the sliding grooves 21.
[0021] The connecting channel 7 penetrates through the sliding grooves 21 and is blocked by the sliding plate 10.
[0022] A through hole 11 is provided on the sliding plate 10. In the state without external force interference, the sliding plate 10 is supported by the spring 9. The plane where the through hole 11 is located is higher than the plane where the connecting channel 7 is located. At this time, the connecting channel 7 is blocked by the sliding plate 10 and the air flow does not circulate. When the shielding door is closed, the insert piece presses the sliding plate 10 to the bottom of the sliding groove 21. At this time, the plane where the through hole 11 is located drops to the plane where the connecting channel 7 is located and the air flow circulates.
[0023] The second sealing air cushion 4 is communicated with a pressure chamber 12 for detecting the internal pressure state after the second sealing air cushion 4 is filled with air flow.
[0024] The pressure chamber 12 is connected with an air outlet channel 13. The air outlet channel 13 is externally connected with an air extraction device 14.
[0025] Working principle: When closing the shielding door, since the width of the card slot 2 is set larger than the width of the insert piece and an error space is reserved, the insert piece of the shielding door can be easily aligned with the card slot 2. When the insert piece touches the sliding plate 10, the pressure sensing module 8 detects the increased pressure, and the air supply device 6 starts to introduce air flow into the air inlet channel 5. After the sliding plate 10 is pushed to the bottom of the card slot 2, the connecting channel 7 is opened, and the first sealing air cushion 3 and the second sealing air cushion 4 are both filled with air flow and expand to wrap both sides of the insert piece to create a sealed environment, thus ensuring the sealing performance after the shielding door is closed; the pressure chamber 12 detects the change of the internal pressure after the air flow is introduced. After reaching the set value, the air supply device 6 stops inputting air flow. When the shielding door is opened, the insert piece leaves the surface of the sliding plate 10, the pressure sensing module 8 detects the decreased pressure signal, and the air extraction device 14 starts to extract air flow, and the first sealing air cushion 3 and the second sealing air cushion 4 contract to help the insert piece disengage.
[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0027] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims
1. A wide-knife sealing structure for a platform screen door, characterized in that: Including: A door frame (1) and a screen door. The door frame (1) is provided with a clamping groove (2). The screen door is provided with an inserting piece corresponding to the clamping groove (2). The width of the clamping groove (2) is greater than the width of the inserting piece; On both sides of the inner wall of the clamping groove (2), there are a first sealing air cushion (3) and a second sealing air cushion (4). Among them, the first sealing air cushion (3) is connected with an air inlet channel (5). The air inlet channel (5) is externally connected with an air supply device (6). A connecting channel (7) is opened between the first sealing air cushion (3) and the second sealing air cushion (4).
2. The wide-knife sealing structure for a screen door according to claim 1, characterized in that: A plurality of sliding grooves (21) are opened at the bottom of the clamping groove (2). A pressure sensing module (8) is laid at the bottom of the sliding groove (21). The pressure sensing module (8) is connected with a spring (9). The spring (9) is connected with a sliding plate (10). The sliding plate (10) is slidably matched with the sliding groove (21).
3. The wide-knife sealing structure for a screen door according to claim 2, characterized in that: The connecting channel (7) penetrates through the sliding groove (21) and is blocked by the sliding plate (10).
4. The wide-knife sealing structure for a screen door according to claim 3, characterized in that: A through hole (11) is opened on the sliding plate (10). In a state without external force interference, the sliding plate (10) is supported by the spring (9). The plane where the through hole (11) is located is higher than the plane where the connecting channel (7) is located. At this time, the connecting channel (7) is blocked by the sliding plate (10) and the air flow does not circulate. When the screen door is closed, the inserting piece presses the sliding plate (10) to the bottom of the sliding groove (21). At this time, the plane where the through hole (11) is located drops to the plane where the connecting channel (7) is located and the air flow circulates.
5. The wide-knife sealing structure for a screen door according to claim 4, characterized in that: The second sealing air cushion (4) is communicated with a pressure chamber (12).
6. The wide-knife sealing structure for a screen door according to claim 5, characterized in that: The pressure chamber (12) is connected with an air outlet channel (13). The air outlet channel (13) is externally connected with an air extraction device (14).