Electromagnetic shielding structure for door

Abstract

The invention discloses an electromagnetic shielding structure used for a door, comprising a plug (100) which is fixed on the door body and a socket (200) which is fixed on the shielding body; the plug comprises a door cutter (110), a door bracket (120) and a metal reed (130) which is arranged on the door bracket; the socket comprises an internal insertion cutter (210), a middle bracket (220) and an external bracket (230); the middle bracket and the external bracket are provided with metal reeds (221 and 223) which push through each other correspondingly; a bypass passage (211) is formed between the middle bracket and the internal bracket; the end of the passage is provided with a chamber (213); wherein, the door cutter (110) is inserted into the metal reeds (221 and 223) which push through each other and are arranged between the middle bracket and the external bracket when the door is being closed; the internal side of the internal insertion cutter (210) is closely contacted with the metal reed (130) of the door bracket, thus gaining high shielding effect and leading the door to be easy to open and close at the same time.

Description

technical field [0001] The invention relates to an electromagnetic shielding structure of a door on an electromagnetic shielding device. Background technique [0002] Electromagnetic shielding doors are used on shielding bodies such as electromagnetic shielding boxes and shielding cabinets to seal the openings on the shielding body and prevent electromagnetic waves from leaking out. At present, the electromagnetic shielding structure of the door is roughly divided into three types. The first type is the structure in which the door blade and the beryllium copper reed are in close contact. The second type is that the door blade, bracket or similar is pressed against the shielding liner. Tight structure, there is also a combination of the aforementioned two structures, such as the disclosed "protective equipment door seam electric sealing structure" in the notification number CN2549145, which is exactly this type. In this type of combination, electromagnetic waves are sealed b...

AI Technical Summary

Problems solved by technology

However, no matter which type it is, there is always a fit gap between the various components of the shielding structure (for example, between the door knife and the beryllium copper reed, between the door knife and the shielding gasket), and the electromagnetic interference of the door There are also requirements for the complexity of the shielding structure, so it is difficult to achieve high shielding effectiveness through limited structural combinations, and usually only meet the B-level requirements of the national confidentiality standard GGBB1-1999

[0003] In addition, there is also the purpose of reducing electromagnetic leakage by pressing the shielding members against each other, thereby reducing the fit gap, such as figure 1 As shown, the electromagnetic shielding structure of such a door includes a bracket 20 and a door knife 10, and the door knife 10 installed on the door (not shown) is inserted into the beryllium copper reed 21 of the bracket 20 (installed on the shielding body), 23, while the beryllium copper reeds 21, 23 are respectively inserted into the rod-shaped shielding gaskets 22, 24 in advance, because the shielding gaskets 22, 24 are elastic, so when the door knife is inserted into the beryllium copper reeds, the beryllium copper The bias of the reed makes the beryllium copper reed more close to the door knife, so that the fit gap between them is greatly reduced, which effectively prevents the leakage of electromagnetic waves and improves the shielding effectiveness. However, it also brings insertion resistance Increased problem, which will make the screen door difficult to close and open, causing great inconvenience to the operator

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