Armrest
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Solution Overview
Problem
Existing seat armrests fail to rotate synchronously with the seat back, leading to discomfort when the user's sitting posture changes.
Innovation Solution
An armrest system comprising a first rod component connected to a seat plate, a second rod component slidably sleeved around the first, and a third rod component connected to a seat back, allowing synchronized rotation and sliding adjustments to accommodate different arm positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the armrest is fixed to the seat plate, then the armrest structure is simple and stable, but the armrest cannot rotate with the seat back, reducing user comfort
Solution Approach 1:
The armrest structure is divided into multiple rod components (first rod component connected to seat plate, second rod component, third rod component connected to seat back) that can rotate relative to each other, allowing the armrest to adapt to seat back rotation while maintaining structural simplicity through modular design
Solution Approach 2:
The armrest structure is merged with the seat back rotation mechanism through the rotatable connection between the third rod component and seat back, enabling the armrest to automatically follow seat back rotation without requiring a separate rotation actuation system
2Adaptability or versatility
If the armrest height is adjustable through vertical sliding, then the armrest can accommodate different user heights, but the armrest cannot adjust horizontally or rotate, limiting adaptability to posture changes
Solution Approach 1:
The armrest structure transitions from a fixed position to a dynamic configuration through rotatable and slidable rod components, allowing the armrest to automatically adapt to seat back rotation and user posture changes without requiring complex manual adjustment mechanisms
3Adaptability or versatility
If the second rod component is slidably adjustable around the first rod component, then the armrest can be positioned at different locations, but the structure becomes more complex with multiple rod components
Solution Approach 1:
The second rod component is sleeved around the first rod component, creating a nested structure that enables sliding adjustment while maintaining a compact form factor. This nesting approach allows position adjustment without requiring separate mounting mechanisms for each rod component
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 comfortable arm support by allowing the armrest to adjust dynamically with the seat back, providing enhanced user comfort and flexibility.
Implementation Method 1
an elastic member configured for driving the limiting rod to engage with the protrusion
Implementation Method 2
By pressing the limiting rod to disengage the engagement, sliding adjustment of the second rod component relative to the first rod component is achieved
Data Source
AI summary
The present disclosure relates to an armrest, comprising a first rod component, around the outer periphery of which a second rod component is slidably adjustably sleeved. One end of the second rod component is rotatably provided with a third rod component. The first rod component has a first mounting hole penetrating through a tail end thereof, and the first rod component is connected to the side of the seat plate through the first mounting hole. The third rod component has a second mounting hole penetrating through a tail end thereof, and the third rod component is connected to the side of the seat back through the second mounting hole.