A miniaturized crown spring type socket joint

Abstract

The invention provides a miniaturized crown spring type socket joint, comprising a protective tube and pins; The protective tube is sleeved and fixed in the base, the protective tube is provided witha contact ring, and the pins are sleeved at the rear ends of the protective tube and the contact ring; the protective tube and the base are in transition fit, the pin is in contact with the protectivetube, the contact ring and the base at the same time, and the contact surface of the pin and the base is interference fit with pin braces. As that invention does not need rivet and spot welding, theinvention can be realized only by press-fitting the protective tube of the installed contact ring and the pin, and it is extremely easy to develop the matching automatic assembly equipment, thereby greatly improving the assembly efficiency and reducing the cost; The direct interference contact area between the protective tube and the pin is larger, the contact resistance is more stable, and the risk of excess solder entering is lower, thus ensuring the reliability of signal transmission.

Description

technical field [0001] The invention relates to a miniaturized crown-spring socket assembly. Background technique [0002] With the increasingly complex installation and use environment of electrical connectors, higher requirements are put forward for the reliability of signal transmission of electrical connector contacts (low insertion force, stable contact resistance, anti-vibration, impact resistance, low cost, high Productivity). At present, the crown spring type socket fittings supporting electrical connectors are as follows: figure 2 As shown, the socket assembly composed of protective tube 5, contact ring (crown spring hole) 6, and pin 7 has the following effects on batch production applications: [0003] 1. The traditional crown spring socket assembly is limited by the structural size and the versatility of the termination form. The assembly relationship of the protective tube 5, contact ring 6 and pin 7 in the socket assembly is as follows figure 2 As shown, the ...

AI Technical Summary

Problems solved by technology

[0003] 1. The traditional crown spring socket assembly is limited by the structural size and the versatility of the termination form. The assembly relationship of the protective tube 5, contact ring 6 and pin 7 in the socket assembly is as follows figure 2 As shown, the 24# crown spring socket assembly is affected by the height of the contact ring 6 (about 5mm), and the height of the protective tube 5 is 6.5mm, so that the height of the protective tube and the pin interference fit end 71 is relatively small (about 0.5mm) mm)

[0004] 2. The fixing of the protection tube and pins is realized by the riveting circle 611. Since the riveting part 61 of the protection tube is not thick and thin (generally 0.1mm), the strength of the riveting point cannot fully bear the radial stress such as the bending of the tail end or the insertion Axial stress when the hole fitting is press-fitted into the connector base, and even the protective tube and pins loosen or fall off during the assembly process, which greatly reduces the reliability of signal transmission

[0005] 3. The assembly process is relatively complicated. The protective tube and pins need to be fixed by riveting + spot welding. The production efficiency is low, and because the interference fit end of the protective tube and pins is short (maximum 0.5mm), the strength of the riveted part is the structure. weakness

[0006] 4. Cut the protective tube flat to ensure the orientation of the solder cup type and the curved plug-in printed board pin 7 in the connector base, but in order to facilitate the insertion of the jack assembly, the protective tube is flattened to match the base hole It can only be designed as a clearance fit, so that there is a slight swing at the end of the pin. To solve this problem, the glue at the end of the pin is added, which reduces production efficiency and increases the risk of colloid curing stress

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