Civil air defense door with high electromagnetic shielding performance

Abstract

The utility model relates to the technical field of civil air defense engineering, in particular to a civil air defense door with high electromagnetic shielding performance, which overcomes the defect of low shielding effectiveness in the prior art and comprises a door frame component, a door leaf component and a hinge component, the door frame component is connected with the door leaf component through the hinge component, and the door frame component comprises a door frame framework. The door leaf assembly comprises a door leaf frame, a groove is formed in the periphery of the outer side of the door frame frame, a shielding structure is arranged in the groove, an attaching structure is arranged on the inner wall of the groove, a slot is formed in the periphery of the outer side of the door leaf frame, and the shielding structure is used for achieving shielding after making contact with the attaching structure. A sealing rubber plate is arranged on the periphery of the outer side of the door leaf frame, the groove is a U-shaped groove, the shielding structure is a shielding sealing gasket, the inserting groove is a convex inserting groove, and the door leaf has the advantages of being high in practicability and electromagnetic shielding performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to a people's air defense engineering technical field, concretely is a people's air defense door with high electromagnetic shielding performance. BACKGROUND

[0002] People's air defense engineering has various types of doors such as protective door, airtight door, blast wave movable door, plays airtight, resistance, ventilation, shielding and so on, can provide necessary protection for people or equipment in people's air defense engineering in war or emergency. With the development of technology and international situation, the electromagnetic shielding protection requirement in people's air defense engineering is continuously improved.

[0003] At present, the people's air defense door mainly adopts conductive rubber strip or metal gasket to carry out electromagnetic shielding protection, and the shielding efficiency is low. And due to the limited space in people's air defense engineering, the people's air defense door is opened in the horizontal opening type, and the shielding and sealing material on the hinge side is first subjected to the compression force when the door is closed, resulting in the problems of large closing force and easy damage of the shielding and sealing material.

[0004] Therefore, it is necessary to design a people's air defense door with high electromagnetic shielding performance and high electromagnetic shielding performance. SUMMARY

[0005] The utility model discloses a people's air defense door with high electromagnetic shielding performance to solve the problem in the above background technology.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a people's air defense door with high electromagnetic shielding performance, including door frame assembly, door leaf assembly, hinge assembly, the door frame assembly is connected with door leaf assembly through hinge assembly, the door frame assembly includes door frame, the door leaf assembly includes door leaf frame, the outside of door frame frame is provided with recess, the inside of recess is provided with shielding structure, the inner wall of recess is provided with the structure that sticks together, the outside of door leaf frame is provided with the slot, the shielding structure is used for realizing shielding after mutual contact with the structure that sticks together, the outside of door leaf frame is provided with sealing rubber board.

[0007] According to the above technical scheme, the recess is U-shaped recess, the shielding structure is shielding sealing gasket, the slot is convex slot, and the structure that sticks together is beryllium copper shielding spring piece.

[0008] According to the above technical scheme, the inside of door leaf assembly is provided with transmission device.

[0009] According to the above technical scheme, the transmission device comprises a guide rail arranged inside the door leaf frame, a wedge-shaped block slidably connected inside the guide rail, a sliding groove arranged inside the wedge-shaped block, a rack slidably connected inside the guide rail, a sprocket arranged at four corners of the door leaf frame, a chain connected to the outside of the sprocket, the inner end of the chain being fixedly connected to the rack and the two ends of the wedge-shaped block, a drive box fixedly installed on the outside of the door leaf frame, an output gear of the drive box being meshed with the rack, and a fixed roller symmetrically and weekly installed on the outside of the door frame.

[0010] According to the above technical scheme, the hinge assembly comprises a hinge seat fixedly installed on the outside of the door frame, a first hinge shaft arranged at the outer end of the hinge seat, an intermediate page arranged at the outside of the first hinge shaft, a second hinge shaft arranged at the outer end of the intermediate page, a sliding block page arranged at the outer end of the second hinge shaft, and a hinge sliding rail arranged on the outside of the door leaf frame, the sliding block page being slidably connected in the groove of the hinge sliding rail.

[0011] According to the above technical scheme, a limiting block is arranged above the second hinge shaft, a torsion spring is arranged between the sliding block page and the intermediate page, a stop block is arranged at the two ends of the hinge sliding rail, and a spring is arranged inside the stop block on the left side.

[0012] According to the above technical scheme, an adjustable universal caster is fixedly installed at the bottom of the door leaf frame, and a hand wheel is arranged on the outside of the drive box.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1) By arranging the insertion groove and the recess, the door leaf assembly is opened and closed through the hinge assembly, when the door leaf assembly is pushed to close the door, the door leaf frame is attached to the door frame, the insertion groove is inserted into the recess, the worker starts the locking operation, then the shielding structure and the attached structure are in close contact with the insertion groove, the sealing rubber plate on the outside of the door leaf frame and the surface of the door frame are in close contact, a shielding and sealing space is formed, the electromagnetic shielding property is improved, and the loss of shielding and sealing materials is reduced.

[0015] (2) By setting up transmission device, when the door is closed to the door leaf frame to apply a push, the door leaf frame starts to rotate and close, until rotating to the locking position, at this time the door leaf frame is parallel to the door frame frame, the convex slot is aligned with the U-shaped groove, and the fixed roller stops on the wedge block, then the drive box starts, drives the output shaft to rotate, so as to drive the rack to slide in the guide rail, at the same time, the chain drives the wedge block to slide synchronously, the fixed roller will enter the arc-shaped sliding groove in the wedge block, at this time the force acting on the fixed roller will drive the door leaf frame to displace longitudinally to the door frame frame, at this time the convex slot will be inserted into the U-shaped groove, since the sliding block page moves horizontally relative to the hinge sliding rail during the locking of the door, and rotates relative to the middle page, the door leaf frame is longitudinally translated while keeping parallel to the door frame frame during the whole locking and closing movement, the stress is balanced, the required locking force is further reduced, and the automatic locking effect is achieved, at the same time, during the process from the opening state to the beginning of the locking state, the shielding and sealing material is not compressed, so that the door closing force of the civil air defense door is greatly reduced;

[0016] (3) By setting up the sliding block page, the sliding block page can slide left and right in the hinge sliding rail and is limited in sliding position by the two end blocks, in the natural state, the sliding block page is tightly close to the right end block under the push of the spring, the middle page can rotate freely through the first hinge shaft, during the closing of the door, the sliding block page and the middle page drive the door leaf frame to rotate and displace to the preparation locking position through the cooperation of the first hinge shaft and the second hinge shaft, and at the same time, the middle page continues to rotate, the sliding block page will displace left in the hinge sliding rail, so as to realize the longitudinal displacement during locking. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the front internal structure schematic view of the utility model;

[0018] Figure 2 is the upper view schematic view of the utility model;

[0019] Figure 3 is the combined structure schematic view of the wedge block and the fixed roller of the utility model;

[0020] Figure 4 is the internal structure schematic view of the hinge assembly before locking of the utility model;

[0021] Figure 5 is the internal structure schematic view of the hinge assembly after locking of the utility model;

[0022] In the figure: 1, door frame assembly; 101, door frame frame; 102, fixed roller; 103, U-shaped groove; 104, shielding sealing gasket; 105, beryllium copper shielding spring sheet; 2, door leaf assembly; 201, door leaf frame; 202, sealing rubber plate; 203, drive box; 204, transmission device; 205, convex slot; 206, guide rail; 207, rack; 208, wedge block; 209, chain; 210, sprocket; 211, hand wheel; 212, adjustable universal caster; 3, hinge assembly; 301, hinge seat; 302, middle page; 303, sliding block page; 304, first hinge shaft; 305, hinge sliding rail; 306, limit block; 307, torsional spring; 308, stop block; 309, spring; 310, second hinge shaft. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-5 The utility model provides technical scheme: a civil air defense door with high electromagnetic shielding performance, including door frame assembly 1, door leaf assembly 2, hinge assembly 3, door frame assembly 1 and door leaf assembly 2 are connected with each other through hinge assembly 3, door frame assembly 1 includes door frame frame 101, door leaf assembly 2 includes door leaf frame 201, the outside of door frame frame 101 is provided with recess a week, the inside of recess is provided with shielding structure, the inner wall of recess is provided with fit structure, the outside of door leaf frame 201 is provided with slot a week, shielding structure is used for realizing shielding after mutual contact with fit structure, the outside of door leaf frame 201 is provided with sealing rubber plate 202, door leaf assembly 2 realizes the opening and closing with door frame assembly 1 through hinge assembly 3, when closing door and applying thrust to door leaf assembly 2, door leaf frame 201 and door frame frame 101 fit, slot will be inserted into recess inside, worker starts locking operation, then shielding structure and fit structure mutually and slot are in close contact, the sealing rubber plate 202 of door leaf frame 201 outside and door frame frame 101 surface are in close contact, and shielding closed space is formed;

[0025] The recess is a U-shaped recess 103, the shielding structure is a shielding sealing gasket 104, the slot is a convex slot 205, the fitting structure is a beryllium copper shielding spring sheet 105, after the locking closing operation is completed, the convex slot 205 of the door leaf frame 201 is in close contact with the beryllium copper shielding spring sheet 105 and the shielding sealing gasket 104 in the U-shaped recess 103 of the door frame 101, the electromagnetic shielding property is improved, and the loss of shielding and sealing materials is reduced;

[0026] The inside of the door leaf assembly 2 is provided with a transmission device 204, which is used for locking operation and reducing the door closing force of the civil air defense door;

[0027] The transmission device 204 comprises a guide rail 206 arranged in the inside of the door leaf frame 201, a wedge-shaped block 208 slidably connected in the inside of the guide rail 206, a sliding groove arranged in the inside of the wedge-shaped block 208, a rack 207 slidably connected in the inside of the guide rail 206, a sprocket 210 arranged at four corners of the inside of the door leaf frame 201, a chain 209 linked to the outside of the sprocket 210, and the inner end of the chain 209 fixedly connected with both ends of the rack 207 and the wedge-shaped block 208. The output gear of a drive box 203 fixedly installed on the outside of the door leaf frame 201 is engaged with the rack 207, and a fixed roller 102 is symmetrically and weekly arranged on the outside of the door frame 101. When the door leaf frame 201 is pushed to close the door, the door leaf frame 201 starts to rotate and close until it rotates to the locking position, at which time the door leaf frame 201 is parallel to the door frame 101, the convex slot 205 is aligned with the U-shaped recess 103, and the fixed roller 102 is parked on the wedge-shaped block 208. Then the drive box 203 is started to drive the output shaft to rotate, thereby driving the rack 207 to slide in the guide rail 206, and simultaneously driving the wedge-shaped block 208 to slide synchronously by the chain 209. The fixed roller 102 will enter the arc-shaped sliding groove in the wedge-shaped block 208. At this time, the force acting on the fixed roller 102 will drive the door leaf frame 201 to longitudinally displace the door frame 101. At this time, the convex slot 205 will be inserted into the U-shaped recess 103. Since the sliding block page 303 moves horizontally relative to the hinge sliding rail 305 and rotates relative to the middle page 302 when the door is closed and locked, the door leaf frame 201 longitudinally translates while keeping parallel to the door frame 101 during the entire locking and closing movement, the stress is balanced, the required locking force is further reduced, and the automatic locking effect is achieved. At the same time, during the process from the opening state to the beginning of the locking state, the shielding and sealing materials are not compressed, thereby greatly reducing the door closing force of the civil air defense door;

[0028] The hinge assembly 3 comprises a hinge seat 301 fixedly installed on the outer side of the door frame 101, the outer end of the hinge seat 301 is provided with a first hinge shaft 304, the outer side of the first hinge shaft 304 is provided with an intermediate leaf 302, the outer end of the intermediate leaf 302 is provided with a second hinge shaft 310, the outer end of the second hinge shaft 310 is provided with a slider leaf 303, the outer side of the door leaf frame 201 is provided with a hinge sliding rail 305, the slider leaf 303 is slidingly connected in the groove of the hinge sliding rail 305, the slider leaf 303 can slide left and right in the hinge sliding rail 305 and is limited in sliding position by the two end blocks 308, in the natural state, the slider leaf 303 is abutted against the right end block 308 by the pushing force of the spring 309, the intermediate leaf 302 can freely rotate through the first hinge shaft 304, in the process of closing the door, the slider leaf 303 and the intermediate leaf 302 drive the door leaf frame 201 to rotate and move to the locking preparation position through the cooperation of the first hinge shaft 304 and the second hinge shaft 310, in order to be able to horizontally insert the convex slot 205 of the door leaf frame 201 into the U-shaped groove 103, the intermediate leaf 302 continues to rotate, and at the same time, the slider leaf 303 will be displaced left in the hinge sliding rail 305, so as to realize the longitudinal displacement in the locking state.

[0029] The upper side of the second hinge shaft 310 is provided with a limiting block 306, the torsional spring 307 is arranged between the slider leaf 303 and the intermediate leaf 302, the two ends of the hinge sliding rail 305 are provided with the end blocks 308, the inner side of the left end block 308 is provided with the spring 309, the rotation range of the intermediate leaf 302 and the second hinge shaft 310 is limited by the limiting block 306, in the natural state, the torsional spring 307 will pull the slider leaf 303 and the limiting block 306 to abut against each other, so as to prevent the internal structure from being abraded in the horizontal locking state.

[0030] The bottom of the door leaf frame 201 is fixedly installed with the adjustable universal caster 212, the outer side of the drive box 203 is provided with the hand wheel 211, the hand wheel 211 is used for manually opening the door, and the height of the adjustable universal caster 212 can be adjusted to adapt to different ground heights.

[0031] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A civil air defense door with high electromagnetic shielding performance, comprising a door frame assembly (1), a door leaf assembly (2), and a hinge assembly (3), characterized in that: The door frame assembly (1) and the door leaf assembly (2) are connected by a hinge assembly (3), the door frame assembly (1) comprises a door frame (101), the door leaf assembly (2) comprises a door leaf frame (201), the outer side of the door frame (101) is provided with a groove, the inside of the groove is provided with a shielding structure, the inner wall of the groove is provided with a fitting structure, the outer side of the door leaf frame (201) is provided with a slot, the shielding structure is used for shielding after being in contact with the fitting structure, and the outer side of the door leaf frame (201) is provided with a sealing rubber plate (202).

2. The civil defense door of claim 1, wherein: The groove is a U-shaped groove (103), the shielding structure is a shielding sealing gasket (104), the slot is a convex slot (205), and the fitting structure is a beryllium copper shielding spring sheet (105).

3. The blast door of claim 1, wherein: The inside of the door leaf assembly (2) is provided with a transmission device (204).

4. The blast door of claim 3, wherein: The transmission device (204) comprises a guide rail (206), the guide rail (206) is arranged in the inside of the door leaf frame (201), the inside of the guide rail (206) is slidably connected with a wedge-shaped block (208), the inside of the wedge-shaped block (208) is provided with a sliding groove, the inside of the guide rail (206) is slidably connected with a rack (207), the inside of the door leaf frame (201) is provided with a sprocket (210) at four corners, the outer side of the sprocket (210) is connected with a chain (209), the inner end of the chain (209) is fixedly connected with the rack (207) and the two ends of the wedge-shaped block (208), the outer side of the door leaf frame (201) is fixedly installed with a drive box (203), the output gear of the drive box (203) is engaged with the rack (207), and the outer side of the door frame (101) is symmetrically and peripherally installed with a fixed roller (102).

5. The high electromagnetic shielding performance civil defense door according to claim 1, wherein: The hinge assembly (3) comprises a hinge seat (301), the hinge seat (301) is fixedly installed on the outer side of the door frame (101), the outer end of the hinge seat (301) is provided with a first hinge shaft (304), the outer side of the first hinge shaft (304) is provided with an intermediate page (302), the outer end of the intermediate page (302) is provided with a second hinge shaft (310), the outer end of the second hinge shaft (310) is provided with a sliding block page (303), the outer side of the door leaf frame (201) is provided with a hinge sliding rail (305), and the sliding block page (303) is slidably connected in the groove of the hinge sliding rail (305).

6. The blast door of claim 5, wherein: The upper side of the second hinge shaft (310) is provided with a limiting block (306), a torsional spring (307) is arranged between the sliding block page (303) and the intermediate page (302), and the two ends of the hinge sliding rail (305) are provided with a stop block (308), and the inner side of the left stop block (308) is provided with a spring (309).

7. The blast door of claim 4, wherein: The bottom of the door leaf frame (201) is fixedly installed with an adjustable universal caster (212), and the outer side of the drive box (203) is provided with a hand wheel (211).

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