Contact unit for connector

Abstract

The contactor unit includes two pair of stylus or more, pressure spring, and lugs setup symmetrically on outside the touch claws at two ends of each stylus. The pressure spring is linear spring. There are comby openings at two ends of linear spring. One pressure spring is setup at each outside end of the stylus. Two ends of each pressure spring are pressed against two lugs at same side of the stylus so as to constitute elastic component of the stylus unit. A spring bracket is socket jointed to middle part of the stylus unit. A plug socket for the stylus and pressure spring to be inserted is setup on the spring bracket along long direction. Position limited fit is formed between inner wall of the plug socket and the pressure spring. Being setup at the middle of the spring bracket, a bolt forms positioning fit together with the stylus. Features are: reasonable structure, compact, and stable working performance of the contactor unit.

Description

technical field [0001] The invention relates to a connector, in particular to a contact unit for the connector. Background technique [0002] The function of the contact unit of the connector is to electrically connect the withdrawable parts of the low-voltage withdrawable switchgear to the connecting piece of the bus bar or other similar components. Such as figure 1 , 2 As shown, the contact unit in the prior art is composed of multiple pairs of contact fingers, U-shaped pressure springs, etc., and each contact finger has an end contact on the contact claw at both ends, and each pair of contact fingers passes through the terminal on it. The upper contact presses the two opposite surfaces of the two contact pieces, and the two contact claws are brought close to each other through the action of the U-shaped pressure spring on the contact unit to maintain the pressing state of the connecting piece. However, the surface contact area between the U-shaped pressure spring and t...

AI Technical Summary

Problems solved by technology

However, the surface contact area between the U-shaped pressure spring and the contact finger is large, and the thermal conductivity is large. The heat on the contact finger is easy to spread to the U-shaped pressure spring, which will cause the U-shaped pressure spring to heat and deform, resulting in a decrease in its elastic capacity, which may seriously cause damage to the U-shaped pressure spring. The pressure spring is burned out, and the damage of the pressure spring directly causes the pressing force to the contact piece to drop, which easily causes the electrical connection to be unstable. Moreover, the pressure spring in the present technology is arranged between each pair of contact fingers. When the contact piece is inserted into each When the contact fingers are between the contact claws, the pressure spring will be elastically deformed. With the increase of the insertion depth of the contact piece, the force borne by the pressure spring will gradually approach its own elastic limit, which will easily cause permanent deformation of the pressure spring. , reducing the effect of its elastic element

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