Seat Cushion Tilt Adjustment Using Weight and Height Mapping
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Solution Overview
Problem
Existing seat cushions require manual adjustment to accommodate different users, which is cumbersome and inefficient, especially when multiple individuals with varying body shapes need to use the same chair.
Innovation Solution
A seat cushion with integrated weight measuring, tilt adjusting, storage, and controlling units that automatically adjusts the seat angle based on user weight, height, and pre-established mapping data to optimize sitting posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of chair geometry is used, then device complexity is reduced, but ease of operation deteriorates due to troublesome adjustment process
Solution Approach 1:
The seat cushion automatically measures user weight and adjusts the seat angle without manual intervention. The weight measuring unit detects user weight, the controlling unit processes this data along with stored height information, and the tilt adjusting unit automatically modifies the seat angle, enabling the system to serve itself without user operation.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated electromechanical system. The weight measuring unit, controlling unit, and tilt adjusting unit work together to substitute the manual mechanical adjustment process with an automated system that uses electrical signals and electronic control.
2Adaptability or versatility
If fixed chair geometry is used, then device complexity is reduced, but adaptability deteriorates for different body shapes
Solution Approach 1:
The seat cushion transitions from a fixed geometry design to a dynamic, adjustable system. The tilt adjusting unit enables the seat angle to change dynamically based on user characteristics, allowing the chair geometry to adapt to different body shapes and sizes rather than remaining static.
Solution Approach 2:
The system changes the seat angle parameter automatically based on measured user weight and stored height information. The mapping data stores optimal seat angles for different user parameters, and the controlling unit selects and applies the appropriate angle, enabling parameter adaptation without manual intervention.
3Ease of operation
If automatic adjustment system is implemented, then ease of operation is improved, but device complexity increases due to additional components
Solution Approach 1:
The controlling unit serves multiple functions: it receives weight measurement data from the weight measuring unit, retrieves user height information from the storage unit, processes this data using mapping relationships to determine optimal seat angles, and controls the tilt adjusting unit. This multi-functionality consolidates control operations into a single component.
Solution Approach 2:
The mapping data is pre-established and stored in the storage unit before actual use. This preliminary preparation of optimal seat angle mappings for different user parameters allows the system to quickly determine appropriate adjustments without complex real-time calculations, simplifying the operational process.
4Productivity
If manual adjustment is required, then manufacturing cost is reduced, but productivity deteriorates due to time-consuming adjustment process
Solution Approach 1:
The weight measuring unit provides feedback on user weight to the controlling unit, which then uses this feedback along with stored height information and mapping data to automatically determine and apply the appropriate seat angle adjustment, creating a closed-loop system that responds to user characteristics.
Solution Approach 2:
The system performs the adjustment function automatically without requiring user time or effort for manual adjustment. The weight measuring unit, controlling unit, and tilt adjusting unit work together to self-service the adjustment process, eliminating the time-consuming manual operation.
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
Enables convenient, automatic adjustment of the seat angle to suit individual users without manual intervention, promoting better sitting posture and user comfort.
Implementation Method 1
The weight measuring unit is coupled to the cushion body, and is configured to measure, when the user is sitting on the cushion body, weight of the user applied to the cushion body
Data Source
AI summary
A seat cushion includes a cushion body, a weight measuring unit coupled to the cushion body, a tilt adjusting unit, a storage unit storing pre-established mapping data, and a controlling unit. The weight measuring unit measures, when a user is sitting on the cushion body, weight of the user applied to the cushion body so as to generate a result of weight measurement. The controlling unit is connected to the weight measuring unit, the tilt adjusting unit and the storage unit, and controls, when the seat cushion is operated in an automatic mode, the tilt adjusting unit to adjust a seat angle of the cushion body with respect to a horizontal reference plane based on the result of weight measurement, a height value and the mapping data.