Swing Arm Mechanism Height Adjustment via Meshing Positions
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Solution Overview
Problem
Conventional swing arm mechanisms for plug door devices with height adjustment mechanisms have a larger number of parts, which complicates the design and increases complexity.
Innovation Solution
The proposed solution involves a swing arm mechanism where the meshing position of the support portion on the fixing portion can be varied to adjust the height of the pillar portion, eliminating the need for a separate adjustment mechanism and reducing the overall number of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate height adjustment mechanism is provided for the pillar portion, then the height of the pillar portion can be adjusted, but the number of parts increases and device complexity increases
Solution Approach 1:
The patent combines the height adjustment function with the existing support portion structure by providing multiple meshing positions on the support portion that can engage with the fixing portion at different heights. This integration eliminates the need for a separate adjustment mechanism, reducing part count while maintaining height adjustability capability
Solution Approach 2:
The support portion is designed with multiple meshing positions that serve dual purposes: providing structural support and enabling height adjustment. This multi-functional design allows the same component to perform both support and adjustment functions, eliminating the need for dedicated adjustment mechanisms
2Adaptability or versatility
If a separate height adjustment mechanism is provided for the pillar portion, then the height of the pillar portion can be adjusted, but the design becomes more complex
Solution Approach 1:
The height adjustment capability is merged into the support portion structure through multiple meshing positions, eliminating the need for separate adjustment mechanisms and simplifying the overall design while maintaining adjustability
Solution Approach 2:
The mechanism allows dynamic height adjustment by enabling the support portion to mesh with the fixing portion at different positions, providing adaptability without requiring complex separate adjustment systems
Data Source
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AI summary
A plug door device (1) according to an aspect of the invention includes: a stationary base (3) fixed to a body of a vehicle; a slidable base (4) provided on the stationary base (3) so as to be movable in a width direction of the vehicle relative to the stationary base (3); a door drive mechanism (30) provided on the slidable base (4) and configured to move a door (2) for opening and closing a doorway (15) of the vehicle in a front-rear direction of the vehicle; and a swing arm mechanism (50) configured to guide the door (2) as the door (2) moves in the width direction of the vehicle and the front-rear direction of the vehicle, and configured to move an upper portion of the door (2) and a lower portion of the door (2) in an interlocking manner. The swing arm mechanism (50) includes: a pillar portion (51) extending in a height direction of the vehicle; a support portion (52) supporting the pillar portion (51) so as to be rotatable around a longitudinal direction of the pillar portion (51); and a fixing portion (53) meshing with the support portion (52) to fix the pillar portion (51) to the body of the vehicle. The support portion (52) includes a meshing portion (71) that can mesh with the fixing portion (53) at different meshing positions in the longitudinal direction of the pillar portion (51).