Mounting structure of built-in lower sliding-door guide rail

Abstract

The invention relates to the technical field of automobile assemblies, and discloses a mounting structure of a built-in lower sliding-door guide rail. The mounting structure comprises a body-side outer plate, a step and a step supporting plate connected between the body-side outer plate and the step, wherein the step adopts a split structure and comprises a front step segment and a rear step segment; a lower-guide-rail mounting plate is also connected between the front step segment and the rear step segment; the lower sliding-door guide rail is fixed at the bottom of the lower-guide-rail mounting plate. Through the adoption of the mounting structure, the lower sliding-door guide rail is fixed under the step instead of on the side-body outer plate, so that the lower sliding-door guide rail is prevented from being positioned on two sides of a sealing surface of a sliding door; therefore, leakproofness at the sliding door is improved; besides, a layout space is saved, and the phenomenon that because a conventional sliding rail is exposed outside, the visual effect is influenced, is avoided; the working reliability of the lower slide rail is improved, and the service life of the lower slide rail is prolonged. In addition, the lower sliding-door guide rail is arranged under the step, so that improvement of the strength of the step is also facilitated, and the step is prevented from deforming.

Description

technical field [0001] The invention relates to the technical field of automobile assembly, in particular to a built-in sliding door lower guide rail installation structure. Background technique [0002] Compared with traditional car doors, car sliding doors are more and more favored by consumers because of their side opening method, which has the advantages of easy parking, large opening width, and convenient entry and exit of passengers and goods. In the automobile market, whether it is a high-end business luxury MPV, or a light passenger car and a low-end passenger mini-car for urban logistics, the sliding door structure is adopted. The lower guide rail of the sliding door is the guiding mechanism to maintain the moving route of the sliding door. In the structural design of the car, the installation structure of the lower guide rail of the sliding door has always been a difficult point in the body design due to the complicated overlapping of the surrounding area and poor ...

AI Technical Summary

Problems solved by technology

This structure causes the guide rail to pass through the sealing surface of the car door, which makes the vehicle's sealing performance poor, resulting in poor air-conditioning effect, noise outside the passenger cabin, etc., easily entering the passenger compartment, affecting the NVH performance of the vehicle; it also makes the guide rail vulnerable to external water vapor and bumps. Influenced by damage, the guide rail is easily corroded, which may easily cause the failure of the slide rail mechanism and the failure of the sliding door to close, which will affect the safety of the occupants.

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