Pantograph Auditorium Seating for Fast Flat-to-Stepped Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems for converting a multipurpose auditorium from a stepped configuration to a flat configuration face challenges such as synchronization issues between lifting and tilting movements, inability to fit non-straight beams, and difficulties in accommodating seats near vertical walls, leading to increased time and cost.
Innovation Solution
The implementation of a pantograph mechanism with a fixed and movable support, controlled by geared electric motors, allows for independent tilting of load-bearing units with compensating mechanisms and inversion means to facilitate smooth conversion between configurations, accommodating various beam shapes and maximizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If known tilting means are used to rotate groups of seats 180°, then the hall can be converted between stepped and flat configurations, but synchronization problems arise between lifting and tilting movements, increasing time and cost
Solution Approach 1:
The patent combines the lifting and tilting functions into a single integrated pantograph mechanism. The same mechanical structure that lifts the load-bearing beam also performs the tilting motion, eliminating the need for separate control systems and synchronization between two independent mechanisms. This merging of functions directly resolves the synchronization problem and reduces conversion time.
Solution Approach 2:
The pantograph mechanism serves multiple functions: it lifts the load-bearing beam vertically, tilts the groups of seats for configuration conversion, and can accommodate both straight and bowed beam shapes. This multi-functionality eliminates the need for specialized mechanisms for each operation, thereby reducing overall system complexity and conversion time.
2Adaptability or versatility
If known tilting means are used for 180° rotation of groups of seats, then configuration change is possible, but the system cannot accommodate bowed beam shapes, requiring beam subdivision that complicates the system
Solution Approach 1:
The patent employs a dynamic pantograph mechanism that can adapt to different beam geometries. The mechanism includes adjustable links and pivots that allow it to conform to both straight and bowed beam shapes during the tilting operation. This dynamic adaptability eliminates the need to subdivide bowed beams into straight sections, thereby reducing system complexity while maintaining versatility.
3Ease of operation
If known tilting means are used, then seat groups can be tilted between deployed and retracted positions, but seats cannot pass between rows during rotation when beams are at the same height
Solution Approach 1:
The patent introduces a vertical dimension to the tilting operation through the pantograph mechanism. Instead of rotating seats horizontally in place, the mechanism lifts and tilts the load-bearing units in a vertical arc, creating additional space for seat groups to pass between rows during the conversion process. This dimensional change eliminates the collision problem while maintaining operational ease.
4Adaptability or versatility
If known tilting means are used, then load-bearing units can be tilted, but the means cannot be fitted to the back row near vertical walls, requiring recesses or manual dismantling
Solution Approach 1:
The patent inverts the traditional approach by making the tilting mechanism portable and adaptable rather than fixed to the wall structure. The pantograph mechanism can be positioned and installed in various locations, including near vertical walls, without requiring structural modifications such as recesses. This inversion of the design approach enables complete coverage of all seat rows while simplifying installation.
Data Source
AI summary
A multipurpose hall equipped with a set of beams supporting seats (1) bearing independent load-bearing units (3) equipped with a group of seats (4) which can be arranged in a stepped configuration or a flat configuration, characterized in that it comprises means for tilting the groups of seats (4) which for each of the load-bearing units (3) comprises at least one pantograph mechanism (9) comprising a fixed support (10) of one piece with the load-bearing beam (1) and a movable support (11) of one piece with the load-bearing unit (3) and the group of seats, as well as a control linkage whereby the group of seats (4) can be moved between a deployed position and a retracted position by rotation around the fixed support (10).