Contact terminals, electrical connectors and electronic equipment

Abstract

The invention discloses a contact terminal, which comprises a bracket and a plurality of contact pieces, the bracket strings together the plurality of contact pieces so that the plurality of contact pieces form an annular structure, and the contact piece includes 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 a hyperboloid structure. The invention also discloses an electrical connector and an electronic device including the above-mentioned contact terminal. In the embodiment of the present invention, through the annular structure composed of a plurality of contact pieces, the electrical contact is changed from the line contact of the wire spring to the surface contact, which increases the contact area, effectively reduces the contact resistance, and increases the terminal current carrying at the same time. The spring has the characteristics of low insertion force, so as to achieve the dual purpose of increasing the current carrying capacity and improving the service life.

Description

technical field [0001] The present invention relates to the technical field of connectors, in particular to a contact terminal, an electrical connector and an electronic device. Background technique [0002] With the needs of social development, more stringent requirements have been put forward for electrical connectors, which are mainly reflected in two aspects: First, the current-carrying capacity of terminals (male terminals and female terminals) is required to be higher, especially for energy storage and new Energy and other application scenarios that have higher requirements on product weight and size; second, higher requirements on the service life of terminals, such as battery swapping 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 main types of products in the world. The first type is...

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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