Single phase tripolar whole sealing contact-type surface contact plug and socket

Abstract

The invention discloses a single phase tripolar whole sealing contact-type surface contact plug and a single phase tripolar whole sealing contact-type surface contact socket, which belong to general electronics and are applied to electrical equipment with the voltage being below 250 volts. A fixed sleeve (11) and a fixed sleeve upper cover (19) are arranged on the rear part of the plug, and a movable sleeve is arranged on the front part of the plug, so that the plug is in a whole sealing state; three electrodes (7), (8) and (9) of the plug are welded with refractory metal contacts; and the three electrodes with the contacts are in parallel arrangement and end-to-end alignment, and a ground electrode is placed in the middle. The socket is provided with a socket door; a shell is in a whole sealing state; three electrodes (43). (44) and (45) in the socket are jointly formed by three copper braids and three metal contacts welded under a metal plate; the three contacts are in parallel arrangement and end-to-end alignment, and a ground electrode is placed in the middle; the spacing distances of the three contacts on the socket are in consistent with those of the three contacts on the plug; the plug and the socket are connected to form contact-type surface contact, are in a whole sealing state, and are respectively still in a whole sealing state in a plug-in process and a plug-out process.

Description

technical field [0001] The invention relates to a single-phase three-pole plug and socket of general electrical appliances, which comprises a single-phase three-pole fully enclosed contact surface contact plug and a single-phase three-pole fully enclosed contact surface contact socket. Background technique [0002] This type of plug socket has been disclosed by the following patent documents in the prior art. [0003] Chinese invention patent No. 88200420 discloses a single-phase three-pole plug and socket, three extremely flat three-pole plugs, wherein the planes of the live wire pole and the neutral wire pole are parallel to each other, and the distance between them is 12.7 ±0.15 mm, the plane of the grounding electrode is perpendicular to the plane of the above two levels, the distance between the center of the grounding electrode and the center line of the above two levels is about 15 mm, the length, width and thickness of the three poles are the same as those of the nat...

AI Technical Summary

Problems solved by technology

[0004] At present, a Bull brand plug and socket is widely sold in the market. The plugs and sockets of this brand have many similarities in appearance and internal structure with the above-mentioned patented plugs and sockets, but Bull products have strong compatibility and are suitable for flat products. Plug and cylindrical plug all can be used, and the bull brand plug of above-mentioned patent product and sale on the market, socket have following several deficiencies: three holes are arranged for plug insertion usefulness on the socket in the prior art, and three electrode metals on the plug piece sticks out of the shell and exposes the

This kind of plug and socket is not safe. After the plug and the socket contact, the contact part forms a point contact. The contact part of the plug and socket with slightly better quality can form a line contact, which causes the passing current to be small and easy to generate heat. Insufficient such as short service life

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