Explosionproof electrical connector, plug and socket thereof

Abstract

An explosion proof electrical connecting device, a plug thereof and a socket thereof. The plug (100) has a plug housing (10) and a plug subassembly (30) provided in an end of the plug housing and having an inserting bolt (300). On the outside wall of the inserting bolt, two opposite first contacts (31, 32), two opposite second contacts (33, 34) and a wedge (35) positioned right above one of the second contacts are provided in turn from the vicinity of the inserting end face of the inserting bolt toward the far end. The socket (200) has a socket housing (20) and a socket subassembly (201). The socket subassembly is provided in an end of the socket housing and has an inserting bolt hole (401) for the inserting bolt being inserted or pulled out and rotated, a guiding slot (450), two opposite first electrodes (51, 52), and two opposite second electrodes (43, 44), which are provided on the wall of the inserting bolt hole respectively. When the inserting bolt is inserted in the inserting bolt hole and the wedge is rotated to a conductive position by certain angle along the guiding slot, the first contacts and the second contacts are electrically connected with the first electrodes and the second electrodes on the conductive position respectively. The electrical connecting device is separated and switched off with reverse rotation.

Description

technical field [0001] The invention relates to an electrical connection device, in particular to an explosion-proof electrical connection device and its plug and socket. Background technique [0002] In areas with explosive hazards, the connectors between electrical equipment and power sources, such as power sockets, can only allow sockets and plugs with explosion-proof functions. If it is a non-explosion-proof plug, it will cause an explosion after insertion. [0003] At present, the existing explosion-proof electrical connection devices include explosion-proof plugs and explosion-proof sockets. Taking four-phase plugs and sockets as examples, there are four plug electrodes and a switch on the insertion end surface of the plug, and four sockets are correspondingly arranged on the socket. When the plug is inserted into the socket, the four plug electrodes are correspondingly inserted into the four jacks, and with the rotation of the plug, the switch can be connected to the ...

AI Technical Summary

Problems solved by technology

[0004] However, for the electrical connection device with this structure, since the four plug electrodes are all located on the same end face, electric sparks are prone to occur during the conduction process, which has certain potential safety hazards.

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