Integrated Chair Control Lever for Height and Back Tilt
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Solution Overview
Problem
Multifunctional office chairs with multiple adjustment mechanisms are confusing for users due to the need for independent structures, making it difficult to determine which mechanism to operate and where it is located, resulting in inconvenient use.
Innovation Solution
A multifunction control device that integrates multiple control mechanisms, featuring a seat with a positioning hole, elevation support, control lever, tilt support, and cover, allowing a single control device to perform both cushion elevation and back tilt adjustments through a unified operation system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple independent adjustment mechanisms are provided for different functions, then each function can be accomplished independently, but the device complexity increases and users find it confusing to operate
Solution Approach 1:
The patent combines multiple independent adjustment mechanisms into a single integrated control device. The control lever integrates the elevation adjustment mechanism and back tilt adjustment mechanism, allowing users to control both cushion elevation and back tilt through one unified structure rather than multiple separate mechanisms.
Solution Approach 2:
The control lever is designed as a universal control device that performs multiple functions. It can adjust both the elevation of the cushion and the tilt of the backrest through the same control mechanism, making the device multi-functional and reducing the need for separate controls for each adjustment type.
2Adaptability or versatility
If multiple independent adjustment mechanisms are provided for different functions, then each function can be accomplished independently, but the ease of operation decreases as users cannot easily determine which mechanism to operate
Solution Approach 1:
The patent combines multiple independent adjustment mechanisms into a single integrated control device. The control lever integrates the elevation adjustment mechanism and back tilt adjustment mechanism, allowing users to control both cushion elevation and back tilt through one unified structure rather than multiple separate mechanisms.
Solution Approach 2:
The control lever is designed as a universal control device that performs multiple functions. It can adjust both the elevation of the cushion and the tilt of the backrest through the same control mechanism, making the device multi-functional and reducing the need for separate controls for each adjustment type.
3Ease of operation
If a single control device integrates multiple control mechanisms, then operation becomes easy and convenient, but the device complexity increases
Solution Approach 1:
The control device is segmented into distinct functional modules including the control lever, connecting base, elevation support, and tilt support. Each segment handles a specific aspect of the adjustment function, allowing the complex multi-functional device to be organized into manageable, independent components that work together through standardized connections.
Solution Approach 2:
The connecting base acts as an intermediary component that receives control input from the control lever and distributes it to both the elevation support and tilt support mechanisms. This mediator structure enables the single control lever to effectively control multiple adjustment functions without creating excessive complexity in the control path.
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 integrated control device simplifies operation by allowing a single control lever to adjust both cushion elevation and back tilt, enhancing user convenience and reducing complexity, while preventing over-rotation and ensuring proper alignment of components.
Implementation Method 1
A receiving trough is formed in the post for receiving a spring. The spring is used to adjust a position of the post.
Implementation Method 2
The rolling ball falls in one of the limiting indents to temporarily position the tilt support. This can prevent the tilt support from overrotating to damage other components.
Data Source
AI summary
The control device includes a seat having a positioning hole. An elevation support connects a first control line and is pivoted to the seat. A control lever has a connecting base received in the receiving room. The connecting base has a receiving hole, a connecting trough and a driving shaft. A tilt support has a through hole and connects a second control line. A cover assembled with the seat has a rotation hole. A rotation support has a cap and a bar. The bar has an insert hole and passes the rotation hole, the through hole and the connecting trough. A bolt passes through the insert hole and the receiving hole.