A chassis with electromagnetic shielding function

Abstract

The invention provides a cabinet capable of electromagnetic shielding. The cabinet comprises a shielding cabinet body, a cable assembly and a connector, the connector is in connection and communication with external equipment of the shielding cabinet body, the connector is connected with the output end of the cable assembly, a shielding layer of the cable assembly is provided with a flange assembly which prevents the shielding layer from electromagnetic leakage, the shielding cabinet body is provided with through holes through which the cable assembly penetrates, and the flange assembly is mounted at the positions of the through holes in a sealed manner. The cabinet can prevent transmission signals from interference, and the installation position of the connector can be changed.

Description

technical field [0001] The invention relates to a vehicle-mounted chassis, in particular to a chassis with electromagnetic shielding function. Background technique [0002] The EBCU chassis (electropneumatic brake control chassis) on the subway is the brain of the brake control of the urban rail vehicle. The fast, accurate and effective transmission of signals is related to the timely, safe and reliable braking of the vehicle. Therefore, the entire EBCU chassis needs to be well Electromagnetic shielding prevents interference or becomes a source of interference. The EBCU chassis needs to communicate with the outside through connectors, and the commonly used connectors cannot meet the electromagnetic shielding requirements of the EBCU chassis. [0003] There are two main types of existing connectors (take the D-SUB connector as an example): one uses a connector with a shell, and the cable assembly is connected to the connector shell through a flange to realize the connection b...

AI Technical Summary

Problems solved by technology

[0002] The EBCU chassis (electropneumatic brake control chassis) on the subway is the brain of the brake control of the urban rail vehicle. The fast, accurate and effective transmission of signals is related to the timeliness, safety and reliability of the vehicle braking. Therefore, the entire EBCU chassis needs to be well Electromagnetic shielding to prevent interference or become a source of interference. The EBCU chassis needs to communicate with the outside through connectors, and commonly used connectors cannot meet the electromagnetic shielding requirements of the EBCU chassis

[0003] There are two main types of existing connectors (take the D-SUB connector as an example): one uses a connector with a shell, and the cable assembly is connected to the connector shell through a flange to realize the connection between the cable assembly and the connector shell. 360° ring shielding, but because the connector shell is an independent structure, when the signal transmission cable of the connector passes through the chassis, there is a gap between the cable assembly and the chassis, and effective shielding cannot be achieved; the other connector is directly welded to the circuit board , leading to the inability to change the installation position of the connector, and the position is limited

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