CN219569962U - Novel electromagnetic shielding door - Google Patents

Abstract

The utility model relates to a novel electromagnetic shielding door, wherein a labyrinth type electromagnetic sealing structure is arranged on an opening and closing surface of a door frame and a door leaf, and comprises 2 rows of slotting tools and 4 rows of reeds, so that a continuous conductive surface can be formed to isolate the propagation of electromagnetic waves. The door leaf and the door frame main body shell are conductive and magnetic metal shells on the premise of guaranteeing electromagnetic shielding performance, the inner side face of the outer side of the door leaf metal shell is provided with a polyurethane plate, a ceramic cotton layer is filled between the middle shell plate and the other inner side face of the door leaf metal shell and in the door frame metal shell, the edge of the middle shell plate is bent to fix the outer shell plate, and the middle shell plate and the outer side slotting cutter enclose a notch to form an edge fireproof rubber strip. The utility model has the advantages that: the structure design is reasonable, and the labyrinth electromagnetic sealing structure is formed by adopting two groups of staggered double-reed extrusion slotting tool structures, so that reliable continuous conductive surfaces can be formed, and the propagation of electromagnetic waves is interrupted. Reasonable door leaf and door frame structural design has reached thermal-insulated, sound insulation effect.

Description

Novel electromagnetic shielding door

Technical Field

The utility model relates to a novel electromagnetic shielding door, which is suitable for the field of ships.

Background

The electromagnetic shielding door is suitable for a ship cabin and the like with electromagnetic shielding requirements, and the I-level electromagnetic shielding door is required to be in a frequency range of 14 KHz-10 GHz, and the shielding effectiveness reaches 80 (+ 15-5) dB.

In the electromagnetic shielding door of the prior art, as disclosed in CN202000863U, the outer side is contacted with a reed at the outer side through an inclined metal boss, and electromagnetic wave propagation cannot be effectively blocked, deformation can occur for a long time, so that the electromagnetic shielding effect is affected, and the electromagnetic shielding door has no heat insulation and sound insulation effects and has a certain limitation.

CN114016882a discloses a cabin electromagnetic shielding door and a manufacturing and installation method, which adopts a labyrinth electromagnetic sealing structure with 2 rows of slotting tools and 4 rows of reed, however, the slotting tools at the outer side of the cabin electromagnetic shielding door are not provided with fire protection structures, so that the fireproof effect at the electromagnetic sealing structure is poor, and the integral fireproof effect is affected.

Disclosure of Invention

The utility model provides a novel electromagnetic shielding door, which aims to overcome the defects in the prior art and has the effects of heat insulation and sound insulation on the premise of improving the electromagnetic shielding effect.

The technical solution of the utility model is as follows: the utility model provides a novel electromagnetic shield door, its structure includes door leaf and door frame through hinge interconnect, door frame welded fastening is on the cabin wall, door frame and door leaf open and shut the face and be equipped with labyrinth type electromagnetic seal structure, labyrinth type electromagnetic seal structure includes 2 rows of slotting tools and 4 rows of reeds. A continuous conductive surface can be formed to block the propagation of electromagnetic waves.

Preferably, for the specific structural design of the labyrinth type electromagnetic sealing structure, the labyrinth type electromagnetic sealing structure comprises a first L-shaped plate and a second L-shaped plate which are oppositely arranged and are respectively arranged on the surfaces of the door frame and the door leaf, which are close to each other, a first U-shaped groove plate is arranged at the outer side end of the first L-shaped plate, a second U-shaped groove plate is arranged at the inner side end of the second L-shaped plate, and when the door leaf is closed, the slotting tools at the inner side end of the first L-shaped plate and the outer side end of the second L-shaped plate respectively extend into the centers of the second U-shaped groove plate and the first U-shaped groove plate, and reeds for compressing the slotting tools are arranged on the inner side surfaces of the two corresponding second U-shaped groove plates and the two sides of the first U-shaped groove plate.

Preferably, in order to realize the heat insulation and sound insulation effects on the premise of ensuring the electromagnetic shielding performance, the door leaf and the door frame main body shell are both conductive and magnetic metal shells, a middle shell plate is arranged in the center of the door leaf metal shell, a polyurethane plate is filled at the outer side of the middle shell plate, a ceramic cotton layer A is filled at the inner side of the middle shell plate, and a ceramic cotton layer B is filled in the door frame metal shell; the door leaf metal shell comprises an outer shell plate at the outer side, the edge of the middle shell plate is folded into a narrow-mouth C-shaped part which only accommodates the thickness of one outer shell plate, the edge of the outer shell plate is fixed in the narrow-mouth C-shaped part, and a fireproof rubber strip is assembled in a notch formed by the narrow-mouth C-shaped part and the outer side of the second L-shaped slotting tool.

The utility model has the advantages that: the structure design is reasonable, and the labyrinth electromagnetic sealing structure is formed by adopting two groups of staggered double-reed extrusion slotting tool structures, so that reliable continuous conductive surfaces can be formed, and the propagation of electromagnetic waves is interrupted. Reasonable door leaf and door frame structural design has reached thermal-insulated, sound insulation effect.

Drawings

Fig. 1 is a schematic structural view of a novel electromagnetic shielding door according to the present utility model.

Fig. 2 is a longitudinal sectional view of fig. 1.

Fig. 3 is a schematic cross-sectional structure of a novel electromagnetic shielding door labyrinth type electromagnetic sealing structure of the present utility model.

In the drawing, 1 is a door leaf, 11 is a polyurethane plate, 12 is an A ceramic cotton layer, 13 is a middle shell plate, 131 is a narrow-mouth C-shaped part, 14 is an outer shell plate, 2 is a door frame, 21 is a B ceramic cotton layer, 3 is a labyrinth type electromagnetic sealing structure, 31 is a first L-shaped plate, 32 is a first U-shaped groove plate, 33 is a second L-shaped plate, 34 is a second U-shaped groove plate, 35 is a slotting tool, 36 is a copper bar pressing plate, 37 is a fireproof rubber strip, and 38 is a reed.

Description of the embodiments

The present utility model will be described in further detail with reference to examples and embodiments.

Examples

A novel electromagnetic shielding door is suitable for a ship cabin with electromagnetic shielding requirements, and the shielding effectiveness reaches 80 (+ 15-5) dB in a frequency range of 14 KHz-10 GHz.

The door hinge comprises a door hinge 1 and a door frame 2 which are connected with each other through a hinge, wherein the door frame 2 is welded and fixed on a cabin wall, and the door hinge can be freely rotated on the door frame 2 to be opened and closed.

Because the opening and closing surfaces of the door leaf 1 and the door frame 2 can form a gap, electromagnetic leakage exists, the door has electromagnetic shielding effect for the whole body so as to effectively prevent the electromagnetic leakage, and the opening and closing surface of the door frame 2 and the door leaf 1 is provided with a labyrinth type electromagnetic sealing structure 3.

The labyrinth electromagnetic sealing structure 3 comprises 2 rows of slotting tools 35 and 4 rows of reed 38, specifically, the labyrinth electromagnetic sealing structure comprises a first L-shaped plate 31 and a second L-shaped plate 33 which are oppositely arranged and respectively arranged on the surfaces of the door frame 2 and the door leaf 1, which are close to each other, a first U-shaped groove plate 32 is arranged at the outer side end of the first L-shaped plate 31, a second U-shaped groove plate 34 is arranged at the inner side end of the second L-shaped plate 33, when the door leaf 1 is closed, the slotting tools 35 at the inner side end of the first L-shaped plate 31 and the outer side end of the second L-shaped plate 33 respectively extend into the centers of the second U-shaped groove plate 34 and the first U-shaped groove plate 32, and the reed 38 for pressing the slotting tools 35 is arranged on the inner side surfaces of the two sides of the second U-shaped groove plate 34 and the first U-shaped groove plate 32 corresponding to the two slotting tools 35. An electromagnetic sealing mode of the slotting tool and the reed is adopted. When the door leaf 1 is closed, the blades 35+the reed 38 around the door leaf 1 and the reed 38+the blades 35 at the corresponding positions of the door frame 2 are inserted into each other, so that the reed 38 is tightly pressed on the blades 35 to form a continuous conductive surface to isolate the propagation of electromagnetic waves.

The door leaf 1 and the main body shell of the door frame 2 are both conductive magnetic metal shells capable of attenuating or isolating the propagation of electromagnetic waves, a middle shell plate 13 is arranged in the metal shell of the door leaf 1, the outer side of the middle shell plate 13 is filled with a polyurethane plate 11, the inner side is filled with an A ceramic cotton layer 12, and the metal shell of the door frame 2 is filled with a B ceramic cotton layer 21; the metal shell of the door leaf 1 comprises an outer shell plate 14 on the outer side, the edge of the middle shell plate 13 is folded into a narrow-opening C-shaped part 131 which only accommodates the thickness of one layer of the outer shell plate 14, the edge of the outer shell plate 14 is fixed in the narrow-opening C-shaped part 131, and a fireproof rubber strip 37 is assembled in a notch formed by the narrow-opening C-shaped part 131 and the outer side of the slotting cutter 35 of the second L-shaped plate 33.

Thereby achieving the effects of heat insulation and sound insulation.

The shielding door leaf 1 and the door frame 2 can adopt a two-point sliding rod type locking mode. The door leaf 1 is opened and closed by a single handle of the door leaf 1, and the door can be opened and closed more labor-saving through the wedge locking structure.

The above components are all of the prior art, and any model and existing design that can achieve their corresponding functions can be used by those skilled in the art.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.

Claims (2)

1. The novel electromagnetic shielding door structurally comprises a door leaf (1) and a door frame (2) which are connected with each other through a hinge, wherein the door frame (2) is welded and fixed on a cabin wall, and the novel electromagnetic shielding door is characterized in that a labyrinth type electromagnetic sealing structure (3) is arranged on the opening and closing surface of the door frame (2) and the door leaf (1), and the labyrinth type electromagnetic sealing structure (3) comprises 2 rows of slotting tools (35) and 4 rows of reed (38); the door leaf (1) and the main body shell of the door frame (2) are both conductive metal shells, an intermediate shell plate (13) is arranged in the metal shell of the door leaf (1), a polyurethane plate (11) is filled at the outer side of the intermediate shell plate (13), an A ceramic cotton layer (12) is filled at the inner side of the intermediate shell plate, and a B ceramic cotton layer (21) is filled in the metal shell of the door frame (2); the metal shell of the door leaf (1) comprises an outer shell plate (14) at the outer side, the edge of the middle shell plate (13) is folded into a narrow-opening C-shaped part (131) which only accommodates the thickness of one layer of the outer shell plate (14), the edge of the outer shell plate (14) is fixed in the narrow-opening C-shaped part (131), and a fireproof rubber strip (37) is assembled in a notch formed by encircling the narrow-opening C-shaped part (131) and the outer side of a slotting cutter (35) of the second L-shaped plate (33).

2. A novel electromagnetic shielding door as claimed in claim 1, characterized in that the labyrinth electromagnetic sealing structure (3) comprises a first L-shaped plate (31) and a second L-shaped plate (33) which are oppositely arranged and respectively arranged on the surfaces of the door frame (2) and the door leaf (1) which are close to each other, a first U-shaped groove plate (32) is arranged on the outer side end of the first L-shaped plate (31), a second U-shaped groove plate (34) is arranged on the inner side end of the second L-shaped plate (33), when the door leaf (1) is closed, the slotting tools (35) on the inner side end of the first L-shaped plate (31) and the outer side end of the second L-shaped plate (33) respectively extend into the centers of the second U-shaped groove plate (34) and the first U-shaped groove plate (32), and reeds (38) for compressing the slotting tools (35) are arranged on the inner side surfaces on the two sides of the second U-shaped groove plate (34) and the first U-shaped groove plate (32).