CN210745865U

CN210745865U - Shielding door shaft shielding wall-passing device of shielding door

Info

Publication number: CN210745865U
Application number: CN201921026106.3U
Authority: CN
Inventors: 王凯斌; 王涛; 赵占良; 马继庆
Original assignee: NORENDAR INTERNATIONAL Ltd
Current assignee: NORENDAR INTERNATIONAL Ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-06-12
Anticipated expiration: 2029-07-03

Abstract

The utility model relates to a shielding wall-crossing device for a shield door shaft, which comprises a door shaft penetrating through the inner side and the outer side of a shield plate of a shield door, a shielding pressing plate arranged on the shield plate and used for being connected with the door shaft, and a reed arranged on the outer side surface of the door shaft and in elastic contact with the shielding pressing plate; the utility model discloses the adoption has elastic reed to be connected between door-hinge and shielding clamp plate, and the shielding plate fixed connection of shielding clamp plate and shielding door has both guaranteed good electric continuity between shielding clamp plate and the door-hinge simultaneously, has realized the electromagnetic shield function, and shielding efficiency is superior to 50dB in 70MHz to 3GHz frequency range, has also guaranteed that the door-hinge can effectively transmit the moment of torsion.

Description

Shielding door shaft shielding wall-passing device of shielding door

Technical Field

The utility model belongs to the technical field of the electromagnetic interference protection and electromagnetic shield and specifically relates to a shield door-hinge shielding wall-crossing device.

Background

With the increasing complexity of electromagnetic environment, the requirements for electromagnetic wave shielding are more and more diversified, and the engineering fields of shielding darkrooms, shielding machine rooms, electromagnetic protection rooms, electromagnetic shielding rooms and the like relating to electromagnetic shielding are more and more extensive. The shielding door is used as a passage for the outside to enter and exit the shielding body, and needs to effectively shield electromagnetic signals and avoid electromagnetic interference of internal signal leakage and external electromagnetic signals to the internal environment of the shielding body. The shield door shaft is used as a key device for opening and closing the shield door, and has the functions of transmitting torque and shielding electromagnetic signals. Therefore, it is necessary to ensure that the door shaft is a shielding over-wall device which can reliably rotate and transmit torque and has reliable electromagnetic shielding effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a shield door-hinge shielding wall-crossing device is provided to realize the reliable rotation of door-hinge, the transmission moment of torsion can guarantee the reliable shielding of door-hinge department again.

The utility model adopts the technical proposal that: the utility model provides a shield door-hinge shielding crosses wall device, its includes runs through the door-hinge that sets up the inside and outside both sides of shield plate at the shield door, sets up the shielding clamp plate that is used for with the door-hinge connection on the shield plate and sets up the reed that forms elastic contact at the lateral surface of door-hinge and shielding clamp plate.

The shielding clamp plate is the neck flange form, the door-hinge passes the shielding clamp plate, and the reed forms elastic contact with the neck of shielding clamp plate.

The utility model discloses be provided with the draw-in groove on the door-hinge, the one end card of reed is put in the draw-in groove.

Shielding clamp plate passes through fastener fixed mounting on the shield plate.

The utility model discloses be provided with electrically conductive liner between shielding clamp plate and the shield plate.

The door leaf that the door-hinge passes through bearing and fixed bolster and shield door is fixed.

The reed of the utility model adopts a finger-shaped reed.

The utility model discloses an actively the effect does: the utility model discloses the adoption has elastic reed to be connected between door-hinge and shielding clamp plate, and the shielding plate fixed connection of shielding clamp plate and shielding door has both guaranteed good electric continuity between shielding clamp plate and the door-hinge simultaneously, has realized the electromagnetic shield function, and shielding efficiency is superior to 50dB in 70MHz to 3GHz frequency range, has also guaranteed that the door-hinge can effectively transmit the moment of torsion.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in the attached figure 1, the utility model comprises a door spindle 1, a shielding pressure plate 6 and a reed 7; the door shaft 1 penetrates through a shielding plate 4 of the shielding door, two ends of the door shaft 1 are respectively located on the inner side and the outer side of the shielding plate 4, a shielding pressing plate 6 is fixed on the shielding plate 4 through a fastening piece 3, a through hole for the door shaft 1 to pass through is formed in the shielding pressing plate 6, a reed 7 is arranged between the shielding pressing plate 6 and the door shaft 1, and the reed 7 enables the door shaft 1 and the shielding pressing plate 6 to be in elastic contact. The fastener 3 can adopt a bolt and nut structure, and the reed 7 is preferably a finger-type reed.

Because when the door-hinge 1 passes the shielding pressing plate 6, there is a gap between the door-hinge 1 and the shielding plate 4, and the gap leaks electromagnetic signals, and through increasing the reed 7 between the shielding pressing plate 6 and the door-hinge 1, good electrical continuity between the shielding pressing plate 6 and the door-hinge 1 is ensured, thereby realizing the electromagnetic shielding function. The reed 7 can deform when the door shaft 1 transmits torque, and can restore to the initial state when the door shaft 1 does not transmit torque, so that the secondary structure can ensure that the door shaft 1 can effectively transmit torque, and the shielding effectiveness is better than 50dB in the frequency range of 70MHz to 3 GHz.

The shielding pressing plate 6 is in a flange shape with a neck, the door spindle 1 penetrates through the shielding pressing plate 6, and the reed 7 is in elastic contact with the neck of the shielding pressing plate 6. The door shaft 1 is provided with a clamping groove, one end of the reed 7 is clamped in the clamping groove in a mechanical mode, and the reed 7 has elasticity, so that one end of the reed 7 can be bent into a shape matched with the clamping groove and then directly clamped in the clamping groove.

A conductive gasket 5 is arranged between the shielding pressure plate 6 and the shielding plate 4, and the door shaft 1 is fixed with a door leaf of the shielding door through a bearing 2 and a fixed support.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. The utility model provides a shield door shaft shielding crosses wall device which characterized in that its is including running through door shaft (1) that sets up in shield plate (4) inside and outside both sides of shield door, set up shield pressing plate (6) that are used for being connected with door shaft (1) on shield plate (4) and set up reed (7) that form elastic contact at the lateral surface of door shaft (1) and shield pressing plate (6).

2. The screen door shaft screen wall-crossing device according to claim 1, wherein the screen pressing plate (6) is in a neck flange shape, the door shaft (1) penetrates through the screen pressing plate (6), and the spring plate (7) is in elastic contact with the neck of the screen pressing plate (6).

3. The shielding door shaft shielding wall-passing device of claim 1 or 2, wherein a clamping groove is arranged on the door shaft (1), and one end of the spring leaf (7) is clamped in the clamping groove.

4. The screen door shaft screen wall-passing device according to claim 1, characterized in that the screen hold-down plate (6) is fixedly mounted on the screen plate (4) by means of fasteners (3).

5. The screen door shaft screen wall-passing arrangement according to claim 1 or 4, characterized in that a conductive gasket (5) is provided between the screen pressure plate (6) and the screen plate (4).

6. The screen door shaft screen wall-passing device according to claim 1, characterized in that the door shaft (1) is fixed with the door leaf of the screen door through a bearing (2) and a fixing bracket.

7. The screen door shaft screen wall passing device according to claim 1, characterized in that the spring (7) is a finger-type spring.