Dustproof structure of relay

Abstract

The invention provides a dustproof structure of a relay, and the structure comprises a shell dustproof structure and a tail piece dustproof structure; the shell dustproof structure is arranged betweenan outer cover and a base, and the tail piece dustproof structure is arranged on a tail piece in the base; in the shell dustproof structure, the end face of the top of a base extends outwards to forma circle of boss structure along the side direction of the inner wall, an outer cover is buckled on the base, the two ends of the bottom of the outer cover are each provided with an inwards-concave structure matched with the two ends of the boss structure, and a sealing gasket is arranged between the outer cover and the base. The sealing gasket is annularly arranged on the periphery of the boss structure, the inner side of the sealing gasket is matched with the outer side of the boss structure of the base in shape, and the outer side of the sealing gasket is consistent with the outer side ofthe base in shape. By improving the structure and additionally arranging the sealing gasket between the base and the outer cover, the base and the outer cover can be matched with the boss of the baseand the concave structure of the outer cover in a staggered mode, and the dustproof performance of the relay and the contact reliability of a contact in the field use process are improved on the basisthat the interchangeability with an existing safe railway signal relay part is guaranteed.

Description

technical field [0001] The invention relates to a relay manufacturing technology, in particular to a dust-proof structure of a relay. Background technique [0002] During the storage, transportation and on-site use of railway signal relays, due to the harsh operating environment, dust and granular foreign matter may enter the interior of the relay through the slot, and poor contact of the contacts often occurs. After analysis, it was found that the contact showed that there were many impurities and foreign matter, such as dust particles, fiber foreign matter, etc. Through the structural analysis of the existing railway signal relay, it is found that there may be two sources of foreign matter inside the relay: one is the fiber foreign matter brought in by the existing relay rope binding process; the other is that pollutants such as external dust pass through the ventilation holes or dustproof pad for redundant via access. [0003] The existing railway signal relays are prot...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art that impurities and foreign objects inside the railway signal relay will affect the contact reliability of the contacts, the problem to be solved by the present invention is to provide a dust-proof structure of the relay that can effectively prevent impurities and foreign objects from entering the interior of the railway signal relay

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