Ventilation cap for car

Abstract

According to the present invention, disclosed is a ventilation cap for a vehicle, which has a simple structure so as to be easily assembled and has water-proof and vibration-proof functions. The ventilation cap according to the present invention is installed in a cylindrical opening portion formed to protrude from a housing of a vehicle component, wherein the ventilation cap comprises a body and acover member. The body is formed to be cylindrical so as to be tightly inserted into and fixed to the outer surface of the opening portion, and comprises a diameter expansion portion on the outer circumferential side thereof having a plurality of vent holes for ventilation in a longitudinal direction. The cover member is formed to be cylinder having a closed end portion so as to be tightly inserted into the outer surface of the body, and when the body is inserted thereinto, constrains an insertion of the body such that the vent hole communicates with a hollow portion of the body.

Description

technical field [0001] The present invention relates to a ventilating cap for automobiles, and more particularly, to a ventilating cap for automobiles which has a simple structure, can be easily assembled, and has waterproof and shockproof functions and air permeability. Background technique [0002] Generally, breathable caps are used for the housings of automotive electrical components such as automotive headlamps, tail lamps, fog lamps, turn signals, motors, various pressure sensors, pressure switches, and electronic control device housings. [0003] That is, in the case of an electrical component, a breather cap is provided in an opening formed to communicate between the inside and the outside to prevent water, dust, etc. The sound is transmitted between the inside and outside of the device case, and the gas and moisture generated in the device case are discharged. [0004] In the prior art, housings of electrical components for automobiles exposed to pollutants such as...

AI Technical Summary

Problems solved by technology

[0006] However, even if the cylindrical body is combined, it cannot prevent water, dust, etc. from flowing into the housing of electrical parts for automobiles, etc.

In order to definitely correct the inflow of water, dust, etc. into the inside of the housing, in the case of increasing the length of the cylindrical body, the space required for installing the cylindrical body and the manufacturing cost of the cylindrical body will increase

[0007] Also, a labyrinth may be provided inside the cylindrical body, thereby filtering foreign matter, in this case, the structure of the cylindrical body will become complicated, and therefore, the cost will increase

[0008] Moreover, in order to perform functions such as waterproofing and shockproofing, the ventilating caps of the prior art are also tried in various ways in addition to the above-mentioned various methods, and finally, adding parts or additional structures for performing functions, thereby increasing the overall size, And the manufacturing cost rises

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