Vehicle Sliding Door Arm Structure for Lower Floor Height
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Solution Overview
Problem
Conventional sliding door devices for vehicles face an issue where the door arm excessively enters the side sill portion, leading to increased floor height and reduced interior space.
Innovation Solution
A sliding door device with a novel structure where a door arm and a body arm relatively move by rotation of one roller, eliminating the need for excessive space intrusion into the vehicle body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional sliding door structure with a fixed door arm is used, then the door can open and close the cabin, but the door arm excessively enters the side sill portion, increasing the floor height and reducing interior space
Solution Approach 1:
The patent applies the dynamics principle by making the door arm and body arm relatively movable through roller rotation. Instead of a fixed door arm structure, the system allows dynamic adjustment where the door arm and body arm can shift positions relative to each other during door operation. This dynamic configuration enables the door arm to avoid excessive intrusion into the side sill portion, thereby reducing floor height while maintaining door functionality.
Solution Approach 2:
The patent implements dimensionality change by introducing a vertical movement component through the roller mechanism. The roller not only facilitates horizontal door movement but also enables vertical adjustment of the door arm and body arm positions. This additional dimensional freedom allows the door arm to clear the side sill portion more effectively, reducing the required floor height and improving interior space.
2Ease of operation
If a conventional sliding door structure is used, then the door can slide forward and backward, but excessive space is required for the door arm to enter the side sill portion
Solution Approach 1:
The patent applies dynamics by enabling relative movement between the door arm and body arm through roller rotation. This dynamic configuration allows the door arm to clear the side sill portion more efficiently, reducing the horizontal space required for door operation while maintaining full sliding functionality.
3Device complexity
If a fixed door arm structure is used, then the door mechanism is simpler, but the vehicle body structure becomes less flat and step height increases
Solution Approach 1:
The patent resolves this contradiction by implementing a dynamic roller-based mechanism that allows the door arm and body arm to adjust their relative positions. This dynamic system, while slightly more complex than a fixed structure, enables a flatter vehicle body design by eliminating the need for excessive clearance space, thereby achieving better overall vehicle aesthetics and interior flatness.
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
This solution allows for a flat vehicle body structure, reducing the step height and enhancing interior design flexibility by enabling linear door movement.
Implementation Method 1
a roller having an edge portion, respectively coupled to the door arm and the body arm so that the door arm and the body arm relatively move with respect to each other in accordance with rotation of the roller
Data Source
AI summary
A sliding door device for a vehicle, includes: a door that opens or closes a door opening formed in a vehicle body; a door arm having a first end portion connected to the inside of the door and to extend toward a side sill of the vehicle body; a mover disposed to face the door and to be movable along the side sill; a body arm having a first end portion connected to one side of the mover, wherein the body arm is disposed in parallel to the door arm to extend toward the inside of the door; and a roller having an edge portion, respectively coupled to the door arm and the body arm so that the door arm and the body arm relatively move to each other in accordance with rotation of the roller.