A small sealed electromagnetic relay reed with bending metal and tin filling

Abstract

The utility model relates to a small sealed electromagnetic relay reed combined with bending metal and tin filling, which belongs to the technical field of relays. The reed body includes a fixed ring with an opening, a V-shaped bent plate and a touch plate in turn from one end to the other end. A punching bag is stamped on the end of the touch plate away from the V-shaped bent plate, and the punching bag is located inside the touch plate. On the surface, after the fixing ring of the reed body is set on the lead-out rod of the relay and fixed by welding, the V-shaped bending plate is filled with solder. In the process of tin filling, the present invention changes the stiffness of the reed by changing the amount of tin filling, so as to shape the deformed reed during the part turnover process and improve the consistency of the product; tin filling allows more metal to transfer and accumulate contacts Partly due to the large amount of heat generated by arcing, the contact ablation caused by arcing is reduced, the contact reliability of the relay is improved, the consistency of reed products is effectively improved, and the impact of arcing heat on the relay contact system is reduced. The impact of performance improves the load operation capability and service life of the relay.

Description

technical field [0001] The invention belongs to the technical field of relays, in particular to a small sealed electromagnetic relay reed with bending metal and tin filling. Background technique [0002] The contact system is an important part of the electromagnetic relay. Due to design reasons, or in order to obtain better reaction force performance, the equal-section broken-line reed is usually used as the main structural form of the small-sized sealed electromagnetic relay contact spring system. This kind of structure requires high precision of the shape after bending. However, in the actual production process, due to the process and other reasons, there are errors in the dimensional parameters such as the width and thickness of the reed, which leads to the poor consistency of the reed product, and the product batch is large, which needs to be assembled on the automatic assembly line. After many turnovers , The thinner reed material makes it prone to deformation, which a...

AI Technical Summary

Problems solved by technology

However, in the actual production process, due to the process and other reasons, there are errors in the dimensional parameters such as the width and thickness of the reed, which leads to the poor consistency of the reed product, and the product batch is large, which needs to be assembled on the automatic assembly line. After many turnovers , the thinner reed material makes it prone to deformation, which will also lead to poor consistency of the reed

Secondly, during the operation of the relay, especially in the state of heavy overload and frequent on-off, a severe arc will be generated between the contacts. The heat flow generated by the arc will cause a temperature of 500°C or higher in the contact area, which will cause contact ablation Even welding, resulting in poor contact reliability of the contacts

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