Motor caravan forehead and carriage staggered lap joint structure and assembling method

Abstract

The invention discloses a motor caravan forehead and carriage staggered layer lap joint structure and an assembling method. The structure comprises a forehead and a carriage top plate. The forehead isprovided with a bent plate at the joint of the forehead and the carriage top plate, and the bent plate comprises a first connecting plate and a second connecting plate which are parallel to each other; The first connecting plate and the second connecting plate are connected through a third connecting plate, the first connecting plate, the third connecting plate and the second connecting plate aresequentially connected to form a step-shaped structure, the first connecting plate is located above the second connecting plate, and the second connecting plate and the third connecting plate form anL-shaped structure. The carriage body top plate is arranged in an L-shaped cavity of an L-shaped structure through sealant, an outer skin is arranged on the side, deviating from the interior of the carriage, of the carriage body top plate, and one end of the outer skin is connected with a first connecting plate through sealant, so that the assembly efficiency of the motor caravan is effectively improved, and accumulated water between the forehead of the motor caravan and the carriage body is eliminated. The waterproof sealing performance of the carriage is ensured.

Description

technical field [0001] The invention relates to the field of installation of a caravan, in particular to a staggered overlapping structure of a forehead and a car body of a caravan. Background technique [0002] According to the regulations of my country's automobile industry standard "Residence Car" (QC / T 776-2017), the caravan is required to have good rainproof and sealing performance, and there should be no water leakage when it is raining. The rainproof and airtightness of the caravan is one of the main indicators of the vehicle, and it is also the most concerned by customers. However, due to the comprehensive influence of various factors such as the roof structure, technological level, and material selection, the problem of water leakage on the roof of the caravan has always plagued the manufacturers. The FRP forehead of the caravan in the prior art is lapped on the roof of the car body. It is necessary to cover a layer of glass fiber at the seam, and then use a sealan...

AI Technical Summary

Problems solved by technology

However, due to the comprehensive influence of various factors such as the roof structure, technological level, and material selection, the problem of water leakage on the roof of the caravan has always troubled the manufacturers.

The FRP forehead of the caravan in the prior art is lapped on the roof of the car body. It is necessary to cover a layer of glass fiber at the seam, and then use a sealant for waterproofing; The reason is that it is easy to accumulate water when exposed to rain for a long time. Because the performance of the seal is greatly affected by the environment and temperature, gaps and pin buckles may appear, which will eventually lead to the failure of the sealant at the overlapping joints, resulting in water leakage in the compartment.

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