Socket and plug of universal serial bus (USB) connector

Abstract

The invention relates to the technical field of signal connectors, in particular to a socket and plug of a universal serial bus (USB) connector, which comprises a socket and a plug, wherein the socket comprises a mother shell, a socket main body and mother contacts, a projecting tongue is formed at the front end of the socket main body, the mother contacts are fixedly connected to the upper surface and the lower surface of the projecting tongue; and the plug comprises a male shell, a plug main body and male contacts, the front end of the plug body is provided with a slot matched with the projecting tongue of the socket, the male contacts are fixedly connected to two slot walls of the slot. Compared with the traditional arrangement mode of the single-row arranged contacts, the invention reduces the arrangement width of the contacts, shortens the volume, and improves the material utilization ratio. Meanwhile, the double-row arrangement mode enables the arrangement density of each row ofcontacts, which reduces the risk that the socket or plug main body is broken down because of transient peak voltage, and prolongs the service life.

Description

Technical field: [0001] The invention relates to the technical field of signal connectors, in particular to sockets and plugs of USB connectors. Background technique: [0002] The existing Universal Serial Bus (i.e., USB) connector has become a technical standard, which includes a mating plug and socket, figure 1 and figure 2 that shows an existing USB connector receptacle where figure 1 is the front schematic diagram of the socket, figure 2 for figure 1 The bottom view of the socket; the socket includes a socket body 2a with an open cavity 21a, the socket body 2a is made of insulating material, a tongue 4a is formed in the cavity 21a, and a tongue 4a is fixed on the lower end surface A row of metal female contact pieces 3a, the tail end 31a of the female contact piece 3a penetrates and extends out of the rear end of the socket body 2a, and a USB connector is formed between the tongue 4a and the cavity wall of the cavity 21a The socket into which the plug is inserted,...

AI Technical Summary

Problems solved by technology

[0003] The male contact pieces and the female contact pieces 3a of the above-mentioned USB connector are all arranged in a single row, and there are the following defects: 1. In order to ensure the insulation between the contact pieces, the female contact pieces 3a of the socket and the male contact pieces of the plug are equally spaced. A certain gap needs to be maintained, which makes the USB connector wider and larger, which hinders its miniaturization development trend; 2. There is only one row of contact pieces on one side of the plug and socket, which does not make full use of materials. It causes waste of materials, which increases the manufacturing cost of the USB connector; 3. The distance between the contact pieces is small, and the insulating layer is easily broken down by high-voltage current, resulting in a short service life

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