Electromagnetic compatibility shielding case
An electromagnetic compatibility and chassis technology, applied in the direction of magnetic/electric field shielding, screening casings, electrical components, etc., can solve problems such as inability to ventilate and observe internal equipment status, inability to lead signals to the outside, and inability to realize electromagnetic shielding. Electromagnetic shielding requirements, good anti-electromagnetic leakage performance, and improved heat dissipation effect
Inactive Publication Date: 2018-05-08
SHANGHAI AEROSPACE SCI & IND ELECTRIC APPLIANCE RES INST
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Problems solved by technology
[0004] The electromagnetic compatibility is achieved by expanding the number of functional units and outlet holes, and the overall electromagnetic shielding is not realized; the patent "CN201611226115.8" discloses a lap joint structure and a chassis, and a raised structure is provided at the joint to improve conductivity, thereby To achieve electromagnetic compatibility, the chassis cannot be ventilated and observe the state of internal equipment, nor can it lead out signals to the outside; the patent "CN201710595603.4" discloses an integrated electrical control cabinet for a high-power AC drive internal combustion locomotive, which adopts the layout of the internal unit structure Solve the problem of electromagnetic compatibility, but cannot realize the electromagnetic shielding of the overall structure
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[0025] See attached Figure 1 ~ Figure 4 , the present invention includes a chassis composed of a front panel 1, a left side panel 2, a right side panel 3, a rear panel 4, an upper cover 5 and a lower cover 6, and a front module upper guide rail 7, a front The lower guide rail 8 of the plug-in module, the upper guide rail 9 of the rear plug-in module, the lower guide rail 10 of the rear plug-in module, the fan assembly 11, the back panel 12, the front plug-in module 13 and the rear plug-in module 14, and the fan assembly 11 will be arranged on the front panel of the chassis The cold air sucked in by the lower air outlet 1-1, the lower air outlet 21 of the left panel and the lower air outlet 31 of the right panel is blown out from the upper air outlet 41 of the rear panel by the air outlet 111; the fan assembly 11 is connected with the lower guide rail 8 of the front module by screws Fixed; the lower air outlet 1-1 of the front panel, the lower air outlet 21 of the left side pa...
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The invention discloses an electromagnetic compatibility shielding case which is characterized in that the case uses front lower air inlet and rear upper air outlet channels, embedded ventilation waveguide windows and a transparent shielding door structure; a draught fan combination blows out inlet air pumped to an upper part via a plurality of air ducts at the upper part of a rear panel; the upper part of the rear panel is provided with an air outlet; the ventilation waveguide windows are embedded in the air inlet and the air outlet and are reinforced by pressing strips; a front panel is provided with a transparent shielding door; conductive rubber rings are disposed on all contact surfaces of the shielding case. Compared with the prior art, the electromagnetic compatibility shielding case prevents an airflow from forming eddy over a rear board guide rail. The transparent shielding door is convenient to open and close, not only satisfies an observation state, but also meets the requirement of electromagnetic shielding. The electromagnetic compatibility shielding case has good anti-electromagnetic-leakage performance, and greatly improves a heat dissipation effect.
Description
technical field [0001] The invention relates to the technical field of communication equipment, in particular to an electromagnetic compatibility shielding case. Background technique [0002] The chassis is the first layer of support and protection metal shell for electronic equipment, especially military electronic equipment. With the increasing frequency of circuit work, relying solely on circuit board design can no longer meet the requirements of electromagnetic compatibility standards, so solve the electromagnetic shielding and sealing of the chassis , is one of the main means to solve the problem of electromagnetic compatibility of electronic equipment. However, the sealing of the case will lead to poor heat dissipation, so coordinating electromagnetic compatibility and heat dissipation of the case is one of the difficulties that need to be solved at present; at the same time, we sometimes need to observe the internal conditions of the case, so the part of the case is r...
Claims
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IPC IPC(8): H05K7/20H05K7/14H05K9/00
CPCH05K7/1418H05K7/20145H05K9/0015
Inventor郁召锋
OwnerSHANGHAI AEROSPACE SCI & IND ELECTRIC APPLIANCE RES INST