Inner diameter, outer diameter, and inner and outer diameter integrated detection method of spring contact finger

Abstract

The invention provides an inner diameter, outer diameter, and inner and outer diameter integrated detection method of a spring contact finger. The inner and outer diameters of the spring contact finger are detected by an inner diameter gauge having the largest outer diameter dimension equal to the outer diameter dimension of a contact corresponding to the spring contact finger to be measured and an outer diameter gauge having the smallest aperture dimension equal to the largest diameter dimension of the limiting circular groove of a contact base corresponding to the spring contact finger to be measured, and whether the inner diameter and outer diameter of the spring contact finger to be measured meet the use requirement can be rapidly determined by a correct determination criterion. The detection method can detect the corresponding parameters of the spring contact finger correctly in batch, is high in detection efficiency, and effectively ensures the quality stability of the spring contact finger.

Description

technical field [0001] The invention relates to an inner diameter, an outer diameter and a comprehensive detection method of the inner and outer diameters of a spring contact finger. Background technique [0002] The spring contact finger is an important elastic electrical connection element on high-voltage switch products. It is usually made of copper wire with a wire diameter of φ0.5mm-φ2mm, and it can be elastically deformed when a small radial force is applied to it. . Spring contacts such as figure 1 and figure 2 As shown, it is an annular ring formed by connecting helical springs end to end. In actual use, such as image 3 As shown, the spring contact finger 1 is embedded in the limit ring groove 2'1 opened on the contact seat 2', and the spring contact finger 1 protrudes inward from the notch of the limit ring groove 2'1. , the contact 3' moves towards the socket 2'2 on the contact seat 3' to be plugged with the contact seat 2'. Since the outer diameter of the c...

AI Technical Summary

Problems solved by technology

[0003] It can be seen that the performance of the spring contact finger affects the quality of the high-voltage switch. The relevant parameters of the spring contact finger, such as internal friction, can be detected with the help of existing testing tools. For the inner diameter and outer diameter of the spring contact finger, due to the The stylus is prone to radial elastic deformation and cannot be measured

If the inner diameter of the spring contact finger is small, the contact is inserted into the inner hole of the spring contact finger, resulting in unreliable contact and affecting the flow capacity; if the inner diameter of the spring contact finger is large, the contact can be inserted into the spring contact The inner hole of the finger, but the outer peripheral surface of the contact cannot be in contact with the arc surface of the inner diameter of the spring contact finger, so that the electrical connection cannot be realized

Similarly, if the outer diameter of the spring contact finger is small, the arc surface of the outer diameter of the spring contact finger cannot be in contact with the groove wall of the limit ring groove opened by the contact seat, and then the electrical connection cannot be realized; if the spring contact finger The inner diameter is large, and the spring contact fingers cannot be embedded in the limit ring groove opened by the contact seat

In addition, when the inner diameter and outer diameter of the spring contact finger meet the requirements of use, it cannot be guaranteed that the inner diameter and outer diameter meet the use requirements at the same time. Therefore, it is necessary to conduct a comprehensive inspection of the inner and outer diameters of the spring contact finger.

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