Vehicle Slide Door Support Arm Rotation Restriction
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Solution Overview
Problem
Existing slide door apparatuses for vehicles face a decrease in support rigidity, leading to swing or shaky movements due to the arrangement of guide rails, which affects the quality feeling and functionality of the door.
Innovation Solution
A slide door apparatus with a body-side guide rail and a door-side guide rail, along with connection members including a support arm and a rotation restriction mechanism, to enhance support rigidity by restricting the rotation of the support arm after the slide door opens, ensuring stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the guide rail is formed at the inner side surface of the slide door to improve arrangement flexibility, then the window frame can be omitted, but the support rigidity decreases causing swing or shaky movement
Solution Approach 1:
The support arm is divided into a first support arm and a second support arm that are rotatably connected. This segmentation allows each arm to independently manage different aspects of support and positioning, thereby maintaining rigidity while enabling flexible arrangement of the guide rail on the door side.
Solution Approach 2:
The rotation restriction mechanism is activated when the slide door reaches a predetermined position during opening or closing. This preliminary action restricts rotation at the critical moment to prevent swing or shaky movement, ensuring stability is maintained when needed most while preserving arrangement flexibility throughout the motion range.
2Ease of operation
If the support arm is allowed to rotate freely to accommodate door opening movement, then ease of operation is improved, but support rigidity decreases causing unstable door operation
Solution Approach 1:
The support arm transitions from a static rigid structure to a dynamic system with controlled rotation. The rotation restriction mechanism dynamically engages at predetermined positions during door operation, allowing free rotation during normal movement while restricting rotation only when the door reaches specific positions, thus balancing ease of operation with support rigidity.
Solution Approach 2:
The rotational degrees of freedom of the support arm are changed based on door position parameters. The rotation restriction mechanism modifies the rotational parameter from unrestricted to restricted state when the door reaches predetermined positions, enabling the system to adapt between ease of operation and support rigidity based on operational needs.
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 effectively enhances the support rigidity of the slide door, reducing swing or shaky movements and improving the overall quality feeling by securely restricting the rotation of the support arm, thus maintaining a stable and reliable operation.
Implementation Method 1
connection members each of which includes a guide roller rolling on a path formed by each of the body-side guide rail and the door-side guide rail
Implementation Method 2
a rotation restriction mechanism restricting the support arm from rotating at a position at which the support arm is positioned after rotating in association with an opening operation of the slide door
Data Source
AI summary
A slide door apparatus includes a body-side guide rail provided at a vehicle body, a door-side guide rail provided at a slide door, connection members each of which includes a guide roller rolling on a path formed by each of the guide rails, each of the connection members being connected to each of the guide rails, the slide door being configured to open and close a door opening portion formed at the vehicle body based on a movement of the slide door, one of the connection members being connected to the door-side guide rail and including a support arm which is rotatably connected to the vehicle body and at which the guide roller is provided, and a rotation restriction mechanism restricting the support arm from rotating at a position at which the support arm is positioned after rotating in association with an opening operation of the slide door.