Heat dissipation type relay with breathing function

Abstract

The invention discloses a heat dissipation type relay with a breathing function. The relay comprises a fixing plate, a shell and a relay body, wherein the shell is slidably connected with an upper portion of the fixing plate in the vertical direction, one-way air outlet valves are fixed to upper ends of left and right side walls of the shell, the fixing plate is provided with a gas chamber along the length direction, a gas inlet hole I is formed in one end of the gas chamber, a drying layer is fixed on an inner side wall of the gas chamber, air inlet holes II are formed in an upper end of thegas chamber along the length direction at equal intervals, air inlets III in one-to-one correspondence with the air inlets II are formed in a bottom end of the shell in the length direction at equal intervals, and a one-way air inlet valve is connected between each second air inlet hole and the corresponding third air inlet hole. The relay is applied to the field of automobiles, an inner cavity ofthe one-way air inlet valve is opened through self deformation of the one-way air inlet valve, meanwhile, suction force is generated to rapidly suck air into the shell to dissipate heat of the relay,the one-way air outlet valve is matched to achieve the automatic breathing effect, and dry air flows in a one-way mode to achieve the heat dissipation function.

Description

technical field [0001] The invention relates to the technical field of automotive relays, in particular to a heat dissipation relay with breathing function. Background technique [0002] The relay is an electrical control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change of the input quantity meets the specified requirements. It has an interactive relationship between the control system (also known as the input loop) and the controlled system (also known as the output loop). Usually used in automatic control circuits, it is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. [0003] Existing relays generally include three parts: a housing, a base plate and a relay main structure. The relay main struc...

AI Technical Summary

Problems solved by technology

However, some relays will work in a harsh environment, such as the relays used in automobiles. This type of relay has a large switching load power. Automotive relays are used in the headlights, small lights, turn signals, tail lights, horns, etc. of the car. Air holes are set on the outer casing, and the external moist gas and water can enter the relay through the air holes, which will affect the normal operation of the relay and have a significant impact on the safe driving of the car.

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