Air vent structure of sealing relay and air vent sealing method thereof

Abstract

The invention discloses an air vent structure of a sealing relay and an air vent sealing method thereof. The air vent structure comprises a casing. A sink portion recessed inwards is arranged on the outer surface of the casing, a protruding column protruding outwards is arranged in the middle of the sink portion, the height size of the protruding column is consistent with the depth size of the sink portion, and an air vent enabling air inside and outside the casing to be communicated is arranged in the middle of the protruding column. When the air vent is sealed, energy of a spot lamp is utilized to enable plastic on the surface of the air vent to be melted together, and a riveting tool is utilized to press downwards to enable plastics of the air vent to be bonded in molding mode. The air vent structure and the air vent sealing method enable the sealing relay to have the advantages of being simple in structure and easy to produce, saving material cost, reducing assembly work time and improving product reliability on the basis of meeting the requirement of national standard for relay sealing.

Description

technical field [0001] The invention relates to a sealed relay, in particular to a vent hole structure of the sealed relay and a method for sealing the vent hole. Background technique [0002] Relay is an electronic control device, it has a control system (also known as input circuit) and a controlled system (also known as output circuit), usually used in automatic control circuits, it actually uses a smaller current to control a larger An "automatic switch" of electric current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. [0003] An existing sealed relay is usually provided with air holes on the housing, figure 1 It is a schematic diagram of the structure of the casing of the existing sealed relay, figure 2 is the front view of the casing of the existing sealed relay, image 3 for along figure 2 The cross-sectional view of the A-A line in the middle, the structural feature of this air hole 10' is tha...

AI Technical Summary

Problems solved by technology

[0005] First, in order to achieve fast curing to avoid gas explosion when sealing air holes, only UV glue combined with ultraviolet light can be cured in about 3 seconds; however, UV glue is expensive, and it is easy to stick the dispensing needle during the dispensing process. And the dispensing head needs to be cleaned regularly;

[0006] The second is that UV glue needs to be cured with the help of ultraviolet lamps. The power of ultraviolet lamps is relatively large and consumes a lot of electricity. Working in the environment of ultraviolet lamps for a long time will cause physical and mental harm to operators;

[0007] The third is that due to the different materials of the UV glue and the relay casing, the surface of the UV glue will be relatively hard after curing, and will be degummed when subjected to external impact, resulting in the disadvantage of unreliable bonding

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