Contact terminal, electric connector and electronic equipment

Abstract

The invention discloses a contact terminal which comprises a support and a plurality of contact pieces, wherein the support connects the plurality of contact pieces in series so as to enable the plurality of contact pieces to form an annular structure, each contact piece comprises a first contact arm and a second contact arm, the first contact arm is located at the inner side of the annular structure, the second contact arm is located at the outer side of the annular structure, and the first contact arm is of a hyperboloid structure. The invention further discloses an electric connector comprising the contact terminal and electronic equipment. According to the embodiment of the invention, through the annular structure formed by the plurality of contact pieces, the electrical contact is changed from the line contact of a wire spring to the surface contact, the contact area is increased, the contact resistance is effectively reduced, the terminal current-carrying capacity is increased, and the characteristic of low insertion and extraction force of the wire spring is achieved, so that the dual purposes of increasing the current-carrying capacity and prolonging the service life are achieved.

Description

technical field [0001] The invention relates to the technical field of connectors, in particular to a contact terminal, an electrical connector and electronic equipment. Background technique [0002] With the needs of social development, more stringent requirements are put forward for electrical connectors, which are mainly reflected in two aspects: First, the requirements for the current carrying capacity of terminals (male terminals and female terminals) are higher, especially for energy storage and new connectors. Energy and other application scenarios that have high requirements for product weight and size; Second, there are higher requirements for the service life of terminals, such as battery replacement technology or new energy charging connectors and other application scenarios that require frequent plugging and unplugging. [0003] In order to meet the demand for contact terminals of electrical connectors, there are currently two types of products in the world, the ...

AI Technical Summary

Problems solved by technology

In order to ensure the contact resistance, the density of wire spring winding must be increased, which also leads to the fact that the wire spring contact scheme cannot be used in small-sized terminals

[0009] 2. In order to ensure the contact area, the wire spring solution cannot use large-diameter wires to wind the contacts, so the insertion and withdrawal force of the wire spring terminal is much smaller than that of the torsion spring terminal.

Although a small insertion force can improve the service life of the terminal, at the same time, because the holding force of the terminal is too small, there may be a problem of discontinuous contact of the terminal, especially in the scene of vibration and shock in a heavy-duty environment

[0010] 3. The wire spring uses a wire to wind the contact piece. If there is a disconnection phenomenon during use, the whole contact piece will be scattered and the contact will no longer be reliable.

In addition, after the winding of the contact piece is completed, it is necessary to manually join the two ends of the wire spring, which will affect the production capacity and cannot meet the large demand of the market.

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