Chair Adjustment Control Rod Layout for Multi-Wire Operation
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Solution Overview
Problem
Conventional chair adjustment systems with multiple controlling rods under the seat become cumbersome, making it difficult for users to remember the precise location of a particular rod for desired functions, leading to operational inconvenience and aesthetic issues, while also lacking in environmental, stability, economic, and industrial application efficiency.
Innovation Solution
A guiding-wire controlling rod device featuring a pivoting rod with a rotation plate and two wire-retaining notches, a controlling rod with a wire-guiding groove and pivot hole, and a triggering rod with a pin hole and notch, allowing for the alignment and control of multiple guiding-wires to simplify user operation and integrate multiple functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate controlling rods are provided for different adjustment functions, then each function can be controlled independently, but the device complexity increases and it becomes difficult for users to remember the precise location of a particular rod
Solution Approach 1:
The patent merges multiple separate controlling rods into a single integrated controlling rod that can control multiple adjustment functions. This single rod incorporates multiple control sections, each capable of independently controlling different guiding wires for seat height, backrest angle, and lumbar support adjustments, thereby reducing the number of rods while maintaining full functional control capability
Solution Approach 2:
The controlling rod is designed with multi-functionality, where a single rod structure can perform multiple control functions through its different control sections. Each section of the rod can be independently operated to control different adjustment mechanisms, making the rod a universal control device that replaces multiple specialized rods
2Ease of operation
If multiple controlling rods are mounted under the seat for handy operation, then user accessibility is improved, but the appearance of the chair is compromised and operational convenience is reduced due to difficulty in locating the correct rod
Solution Approach 1:
By combining multiple control functions into a single rod, the patent eliminates the visual clutter of multiple rods under the seat. The unified rod structure presents a cleaner, more streamlined appearance while maintaining all necessary control functions, thus resolving the conflict between aesthetic appearance and operational accessibility
3Device complexity
If a single controlling rod is used to control multiple guiding-wires, then the device complexity is reduced and appearance is improved, but the reliability of controlling each function independently may be compromised
Solution Approach 1:
The single controlling rod is segmented into multiple independent control sections, each responsible for controlling a specific guiding wire and adjustment function. This segmentation ensures that each function can be controlled independently without interfering with other functions, maintaining reliability while reducing overall device complexity
Solution Approach 2:
Different sections of the controlling rod are designed with local quality variations, where each section has specific structural characteristics optimized for its control function. This allows each segment to reliably control its designated guiding wire while the overall rod maintains structural integrity and simplicity
Data Source
AI summary
A guiding-wire controlling rod device for chair adjustment is pivotally attached inside a housing by a rotation plate of a pivoting rod. The rotation plate has two sides each with a guiding-wire retaining notch and has multiple abutting flat surfaces formed at a front end of the rotation plate to abut with a resilient sheet to position the rotation plate at different angles. Moreover, a rear end of a controlling rod of the pivoting rod has a pivotal hole to pivotally engage with another controlling rod to drive other guiding-wires. Thereby, the controlling rods are aligned and control respectively multiple guiding-wires for different functions.