Watch chain link pin and manufacturing method thereof as well as watch chain link connecting structure

Abstract

The invention relates to the technical field of watches and in particular relates to a watch chain link pin and a manufacturing method thereof as well as a watch chain link connecting structure. The watch chain link pin comprises a pin made of shape memory alloy, wherein the side surface of the pin is outwards protruded to form convex parts. The manufacturing method comprises the following steps: A, folding a shape memory alloy metal strip along the middle and enabling two half metal strips to be close to each other; and B, stamping positions, close to two ends, of the metal strip to form the outwards protruded convex parts. The pin can be inserted into and pulled out of a pin hole without a tool during mounting and dismounting of watch chain links by virtue of the characteristics of temperature difference deformation of memory metal, so that the mounting or dismounting process is simplified and convenient, the problems that the watch chain links are damaged and the pin cannot be pulled out during mounting and dismounting of the watch chain links are solved, the pin made of the shape memory alloy is long in life and the risk of watch chain loosening is reduced.

Description

technical field [0001] The invention relates to the technical field of watches, in particular to a watch chain link pin, a manufacturing method thereof, and a watch chain link connection structure. Background technique [0002] Watch chains are an important part of watches and come in a variety of forms, including straps, metal, and more. Existing metal watch chains are generally composed of multi-section watch links with pin holes connected by metal pins. The pins are cylindrical straight strip structures, and the pins and pin holes are assembled by pressing to make the pins tight In the pin hole, in real life, almost all watches need to adjust the length of the watch chain at least once to adapt to the user's hand. Insert the pin into the pin hole after dismantling. It is inconvenient to assemble and disassemble. This will easily cause damage to the watch chain link and the problem that the pin cannot be removed. The pin is made of a metal material with strong ductility. ...

AI Technical Summary

Problems solved by technology

Existing metal watch chains are generally composed of multi-section watch links with pin holes connected by metal pins. The pins are cylindrical straight strip structures, and the pins and pin holes are assembled by pressing to make the pins tightly fixed In the pin hole, in real life, almost all watches need to adjust the length of the watch chain at least once to adapt to the user's hand. After dismantling, insert the pin into the pin hole. It is inconvenient to assemble and disassemble. This is easy to cause damage to the watch chain link and the problem that the pin cannot be removed, and the pin is made of metal with strong ductility. It should be assembled two or three times in an urgent way. After that, the pressing force will start to drop, shortening the service life and increasing the risk of the bracelet falling apart

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