Automotive central defrosting air pipe and mounting structure for same and instrument board

Abstract

The invention provides an automotive central defrosting air pipe. The air pipe body of the air pipe is an integral pipe by blow molding. The lower end of the air pipe body is provided with an air inlet which is in butt joint with an air outlet of an HVAC after the air inlet is connected with a surface-blowing air pipe. The upper end of the air pipe body is divided right and left to form two symmetrical air outlets with oblong sections. The upper end of the air pipe body is arranged to an inner side face of the instrument board and the lower end of the air pipe body is connected with the surface-blowing air pipe. In order to solve the problems of air outlet deformation, insufficient intensity and the like which are possibly caused by the blow molding technology, at least two connecting blocks with mounting holes are formed on the external sides of upper edges of the air outlets; the air pipe body is mounted on the inner side face of the instrument board through screws; and a malposition-preventing flanging is formed on a lower edge of each air outlet, wherein the malposition-preventing flanging extends outwards in a horn shape relative to the air outlet. The automotive central defrosting air pipe has the advantages of improving the airtightness, avoiding the deformation of the air outlets of the air pipe, guaranteeing the manufacturability in assembly with the defrosting grille, increasing the intensity, contributing to reducing the development cost of a finished automobile, and reducing the weight of the finished automobile.

Description

technical field [0001] The invention belongs to the technical field of automobile ventilation, and in particular relates to a central defrosting air duct structure of an automobile. Background technique [0002] The central defrosting duct of the car is an important part to provide air-conditioning ventilation and meet the front vision of the car in frosty and foggy weather. Generally, the central defrosting air duct is made of PP injection molding, and the strength and rigidity of the injection molded parts are relatively good, so the deformation is relatively small and the assembly accuracy is relatively high. However, the injection-molded central defrosting air duct is generally formed by clamping the upper and lower air duct pieces. There are many clamping points, the mold making is more complicated, and the cost is also high. If the clamping structure design is not good, the clamping part It is easy to trip and cause the air duct to leak air. [0003] If the blow mold...

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Problems solved by technology

[0004] The object of the present invention is to solve the problems in the prior art such as poor sealing effect, misalignment of the air outlet and the central defrosting grille of the instrument panel, etc., and provide a car with simple structure, reliable use, convenient assembly and good sealing performance. The central defrosting air duct, and at the same time propose its installation structure with the instrument panel

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