Vehicle Table Railing Layout for Grip Compliance and Object Retention
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Solution Overview
Problem
Existing vehicle tables in rail vehicles, such as bar cars, do not meet aesthetic and functional requirements of European Standard EN 16585-2 for gripping devices, being both bulky and unattractive while failing to prevent objects from sliding off.
Innovation Solution
A table design with a railing extending above the tabletop, attached via fixing pins, ensuring a thickness of 30-40 mm and a gap of ≤5 mm between the table and railing, allowing easy gripping and object retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the railing is placed in front of the front edge of the table board to comply with the standard, then the gripping device meets the thickness requirement, but the table becomes bulky and aesthetically unpleasing
Solution Approach 1:
The railing is repositioned from a horizontal placement in front of the table board to a vertical placement above the table board, utilizing the height dimension. This dimensional change allows the railing to meet the thickness requirement when measured from the bottom face to the top of the railing, while maintaining a sleek profile that does not protrude beyond the table edges, thus resolving the contradiction between compliance and aesthetics.
2Reliability
If the railing is positioned to meet the standard thickness requirement, then compliance is achieved, but the railing becomes thick and bulky
Solution Approach 1:
By positioning the railing vertically above the table board rather than horizontally in front, the effective thickness is measured along the height axis. This allows the railing to have a small cross-sectional area (thin profile) while still achieving the required 30-40mm thickness measurement from the bottom face to the top of the railing, thus meeting the standard without creating a bulky appearance.
3Shape
If the railing is placed above the table board, then the table becomes more aesthetically pleasing with a thinner profile, but the ability to prevent objects from sliding off is reduced
Solution Approach 1:
The railing positioned above the table board serves multiple functions: it acts as an aesthetic element with a thin profile, provides a gripping surface for passengers, and simultaneously functions as a retaining device that prevents objects from sliding off the table. The vertical positioning allows the railing to overhang the table edges, creating a barrier that stops objects while maintaining a sleek appearance.
4Shape
If the railing is positioned close to the table board, then the aesthetic gap is minimized, but the gripping surface area is reduced
Solution Approach 1:
The railing is positioned close to the table board to minimize the visual gap and maintain aesthetic continuity, while the railing itself has sufficient length and protrusion beyond the table edges to provide an adequate gripping surface area. The local quality of the railing's position and dimensions is optimized to simultaneously achieve visual continuity and functional grip.
Data Source
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AI summary
A table (12) for a vehicle. The table comprises a table board (14) comprising a top face (14A) perpendicular to a height axis (Z) and a bottom face (14B), the top face and the bottom face being delimitated by a front edge (16) of the table board. The table also comprises a railing (20) extending parallel to and along the front edge of the table board. According to the invention, the railing (20) is located above the top face (14A) of the table board (14), along the height axis (Z), and a thickness (T12) of the table (12), measured along the height axis from the bottom face to the railing (20), is comprised between 30 mm and 40 mm.