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A contact element and its preparation method

A contact element and condition technology, applied in the direction of electrical components, elastic connectors, connections, etc., can solve the problems of not meeting the requirements of large current and shock vibration, unstable quality of contact elements, high production cost, etc., to ensure high current, Good machinability and low production cost

Active Publication Date: 2018-11-20
SICHUAN RECODEAL INTERCONNECT SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a contact element and its preparation method, which can effectively solve the problems of unstable quality, poor performance, high production cost, and inability to meet the requirements of large current and shock vibration in the prior art. asked questions

Method used

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  • A contact element and its preparation method
  • A contact element and its preparation method
  • A contact element and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] refer to Figure 1-8 , this embodiment provides a contact element, including a pin 1 and a socket assembly 2 matching the pin 1 .

[0054] The pin 1 includes a pin body 3 and an insulating cap 4. The insulating cap 4 is arranged on the front end of the pin body 3 and has an interference fit with the pin body 3. The function of the insulating cap 4 is to prevent conduction. When the pin 1 is installed on the plug 19, if pin 1 conducts electricity, the insulating cap 4 in pin 1 can play an insulating role to avoid electric shock to the human body; the second function is to prevent arcing. When plugging and unplugging with power, the insulating cap 4 in pin 1 is the first Contact with the socket assembly 2 can prevent the generation of electric arc.

[0055] The socket assembly 2 includes a socket body 5 and a ring spring 6; the groove of the socket body 5 is a 135° V-shaped groove, the groove width is greater than the height of the ring spring 6, the inner diameter of th...

experiment example

[0071] Taking the Φ15 ring spring as an example, the spring wire is 0.3mm, the inner diameter of the ring spring is 15mm, and the height is 3mm. It is assembled into a contact element, and then the electrical performance test is performed on the contact element:

[0072] Contact resistance: test conditions USCAR-2, Section 5.3.1.4, test requirements <1.5mΩ, actual test value is 0.22 mΩ, which meets the requirements.

[0073] Static heating: the test requires a connection of 135mm 2 Cable, current 400A, temperature rise < 42°C, actual test value 30°C, meet the requirements.

[0074] Plugging life: The test requires 10,000 cycles of plugging and unplugging, and the temperature rise is tested every 2,000 times. The temperature rise is <42°C, and the separation force is recorded. The actual separation value begins to be about 23N. With the increase of the number of plugging and unplugging, the separation force gradually After 10,000 times of plugging and unplugging, the separatio...

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Abstract

The invention discloses a contact element, which comprises a contact pin and a jack assembly matched with the contact pin, wherein the contact pin comprises a contact pin body and an insulating cap; the insulating cap is arranged at the front end of the contact pin body; the jack assembly comprises a jack body and a ring spring; the ring spring is arranged in the front end of the jack body, the section of the ring spring is an ellipse, the ring spring has an inward radian and the radian is 60 degrees; and the ring spring comprises a spring wire and a bracket retainer ring for fixing the spring wire. The preparation method comprises the following steps of (1) spring winding; (2) cleaning; (3) electroplating; (4) welding; and (5) assembling. The contact element is long in mechanical life, can be plugged and uplugged for 10,000 times, and can be widely used for the field of frequent plugging and upplugging and the fields of shock and vibration resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of contact elements, and in particular relates to a contact element and a preparation method thereof. Background technique [0002] New energy electric vehicles need to use a large number of high-current connectors with shock and vibration resistance to achieve electrical transmission and control. The high-current connectors of electric vehicles are mainly composed of four parts: contact elements, housings, insulators and accessories. Among them, the contact element is the key core part of the high-current connector to complete the electrical connection function. The quality of the contact element directly affects the safety performance of the car. Connectors require a mechanical life of more than 10,000 times, while the mechanical life of traditional connectors is generally 1,000 times, which puts forward higher technical requirements for the contact elements of high-current connectors. [0003] At present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R4/48H01R43/00
CPCH01R4/4872H01R43/007H01R2201/26
Inventor 徐明刚张聪秦刚
Owner SICHUAN RECODEAL INTERCONNECT SYST CO LTD
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