Sliding Door Guide Rail Layout for Compact Vehicle Integration
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Solution Overview
Problem
Existing sliding door guide systems require significant lateral clearance, leading to unsightly bulges in the passenger compartment and are not robust enough due to the stacked design of guide rails, limiting vertical adjustment and integration into vehicle bodies.
Innovation Solution
A sliding door guide device with an axial guide means and an angular guide means, featuring a connecting arm with parallel branches and rollers, allowing for compact integration and robust construction using stainless steel or aluminum rails, with adjustable vertical spacing and a rotating joint for smooth door movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a curved track extending into the passenger compartment is used to guide the sliding door, then the door can be guided into alignment with the bodywork when closing and pushed outwards when opening, but significant lateral clearance is required resulting in an unsightly bulge in the passenger compartment area
Solution Approach 1:
The patent transitions from a conventional curved track extending laterally into the passenger compartment to a guide device that utilizes the vertical dimension. The guide rails are arranged with one above the other, and the connecting arm moves vertically between them, converting lateral movement requirements into vertical movement, thereby eliminating the unsightly bulge in the passenger compartment area.
Solution Approach 2:
The guide device nests the second guide rail vertically above the first guide rail, with the connecting arm moving between them. This nested arrangement consolidates the guide mechanism into a compact vertical space, reducing the lateral footprint and eliminating the need for significant lateral clearance in the passenger compartment.
2Area of stationary object
If the first and second guide rails are positioned close together in a stacked design, then the transverse footprint is reduced, but the door's vertical adjustment range is limited and the geometry is difficult to integrate into the body
Solution Approach 1:
The patent employs a dynamically adjustable connecting arm that can move vertically between the two guide rails. This dynamic movement capability allows the door to achieve both compact transverse footprint when closed and adequate vertical adjustment range when open, while the adjustable geometry facilitates easy integration into the vehicle body.
3Ease of manufacture
If a generally flat and weak sheet of folded metal is used for the connecting arm, then the guide device is not very robust
Solution Approach 1:
The patent specifies that the connecting arm be made of a rigid material such as aluminum or steel, replacing the weak folded metal sheet. This material substitution significantly enhances the robustness and strength of the guide device while maintaining manufacturability through standard metalworking processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a compact, robust, and discreet integration of the guide device, allowing large door travel with minimal transverse and vertical footprint, enhancing vehicle habitability and impact resistance.
Implementation Method 1
The angular guidance means comprises a roller connected to the connecting arm and mounted to slide along the second rail such that the movement of the roller along the inclined portion of the second rail causes the connecting arm to rotate around the carriage, about a first axis of rotation.
Implementation Method 2
The axial guidance means comprises the carriage mounted to slide along the first rail by means of a pair of rollers connected to a plate extending under each of the first and second rails.
Data Source
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AI summary
The invention relates to a device (1) for guiding a sliding door (2) of a vehicle, in particular a motor vehicle, the device comprising an axial guide means (3) made up of at least a first substantially rectilinear rail (31) along which a carriage (32) is able to slide, and an angular guide means (4) made up of a second rail (41) having, in particular, a curved end (42), having a portion that is sloped relative to the first rail (31) and a connecting arm (43) for connecting to the door. The guide device is characterised in that the first rail (31) extends in a plane (Pxy), which plane is, in particular, substantially horizontal, in which the second rail (41) moves such that the connecting arm (43) connecting the door to the guide device extends only under each of the first and second rails (31, 41).