The invention belongs to the technical field of automobile parts, and particularly relates to a labyrinth structure of an automobile lamp rear cover and the automobile lamp rear cover. The labyrinth structure comprises an automobile lamp rear cover, an air inlet mechanism and an air inlet pipe, and the air inlet mechanism is composed of a base, side plates, the labyrinth structure, an airflow channel and a cross valve. According to the labyrinth structure of the automobile lamp rear cover and the automobile lamp rear cover, when the interior of the lamp is in positive pressure, the silica gel cross valve is opened, and gas in the lamp extrudes the cross valve to be exhausted out of the lamp; and when the interior of the lamp is in negative pressure, the silica gel cross valve is opened, and gas outside the lamp enters the airflow channel through the cross valve and finally enters the lamp to balance the pressure. By means of the labyrinth structure, external air cannot directly enter the lamp, the airflow entering speed is reduced, and therefore the entering time of the external air is prolonged. Air entering from the airflow channel can enter a sliding pipeline from an air inlet, the air is filtered through a first filter layer, activated carbon, a second filter layer, a dust removal net and a third filter layer, a drying layer, and the filtered gas enters the interior of the automobile lamp rear cover and is exhausted from an exhaust port.
本发明属于汽车零件技术领域,尤其涉及一种车灯后盖的迷宫结构及车灯后盖,包括车灯后盖、进气机构和进气管,进气机构由底座、侧板、迷宫结构、气流通道和十字阀组成。该车灯后盖的迷宫结构及车灯后盖,当灯内部呈正压时,硅胶十字阀打开,灯内的气体挤开十字阀排出到灯外,当灯内部呈负压时,硅胶十字阀打开,灯外的气体经十字阀进入气流通道,最终进入到灯内平衡压力,迷宫结构的使用使得外界空气不能直接进入灯内,降低气流进入速度,从而延长外界空气进入的时间,从气流通道进入的空气,会从进气口进入到滑动管道内部,经过过滤层一活性炭,过滤层二除尘网和滤层三干燥层的过滤,过滤出的气体进入到车灯后盖的内部从排气口排出。
Labyrinth structure of automobile lamp rear cover and automobile lamp rear cover
一种车灯后盖的迷宫结构及车灯后盖
2021-07-30
Patent
Electronic Resource
Chinese
Automobile lamp rear cover and ventilating cowl assembling tool
European Patent Office | 2015
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