High-current cage type belt spring inserting hole

Abstract

The invention discloses a high-current cage type belt spring inserting hole which is simple in processing process, low in cost, tight and reliable in contact, long in service life and large in rated load. A comb-shaped metal sheet metal 2 which is formed by elastic metal strips with one ends connected and with a certain angle of inclination with the end surface is inserted in an inserting hole body 1, wherein an enveloping surface formed by the elastic metal strips of the comb-shaped sheet metal 2 is a single-blade rotation double-curved surface, and is shaped like a waist drum with large two ends and small middle part. The integral comb-shaped sheet metal 2 replaces a conventional wire spring thread and a conventional inner sleeve, a plurality of elastic metal strips are uniformly enveloped on the surface of an inserting needle, are in multi-wire envelop and parallel contact, the shortcomings and the defects are overcome, and the advantages of a wire spring inserting hole contact mode and a crest spring structure are integrated into a whole.

Description

Technical field [0001] The invention belongs to electrical connector contacts, in particular to a large-current cage-type spring jack. Background technique [0002] At present, the existing electrical connector contacts with good reliability and stability have single-leaf rotary hyperboloid wire spring jacks, which are evenly enveloped by a group of elastic metal wires arranged in a single-leaf rotary hyperboloid structure. On the surface of the pin inserted into it, it is a multi-line envelope contact. The jack contact with this wire spring structure is composed of four parts: an inner sleeve, an outer sleeve, a rear sleeve, and an elastic metal wire. A group of elastic metal wires arranged in a single-leaf rotary hyperboloid are coaxially installed in the inner sleeve. The two ends of the metal wire in the inner sleeve protrude out of the port and are bent back along the outer cylindrical surface of the inner sleeve. The bending part is clamped by the inner cylindrical su...

AI Technical Summary

Problems solved by technology

[0003] This kind of wire spring socket has the following disadvantages: (1) the contact resistance of the socket method is large, and the tensile force is poor. More, the volume cannot be further reduced, which is not conducive to the development of miniaturization and densification; (3) the processing technology is complicated and the precision requirements are high, resulting in low product qualification rate and high cost; (4) the elastic metal wire does not fit in the limited space It may be very thick, making it difficult for each wire to withstand the impact of a large current, and does not support live plugging (plug and play); (5) The phenomenon of broken wires of elastic metal wires during use cannot be avoided

[0005] However, after the existing crown spring socket is inserted into the pin, the metal strip cannot be evenly enveloped on the surface of the pin like the wire spring wire in the wire spring socket, and only the part with a smaller diameter in the middle is connected to the pin. Surface contact, its contact performance cannot be compared with the multi-line envelope contact method of a single-leaf hyperboloid of revolution

Images