Nested Sliding Chair Armrest for Thin Multi-Axis Adjustment
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Solution Overview
Problem
Current chair armrest designs are excessively thick due to multiple adjustable functions, affecting aesthetics and consumer purchase intentions.
Innovation Solution
A chair armrest design that incorporates a rectangular space within the armrest body with sliding and rotating components, utilizing a mounting seat and damping gears to allow for lengthwise and widthwise adjustments while maintaining a slim profile, utilizing a button mechanism for easy position locking and smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple moveable functions (lengthwise adjustment, widthwise adjustment, rotation) are incorporated into the armrest, then the adjustment versatility is improved, but the overall thickness of the armrest increases
Solution Approach 1:
The patent applies nesting by placing the first component (containing lengthwise adjustment mechanism) and second component (containing widthwise adjustment mechanism) inside the armrest body's rectangular space. The mounting seat is integrated into the armrest base, and components are arranged concentrically within the existing structure, allowing multiple adjustment functions without increasing overall thickness
Solution Approach 2:
The patent resolves the thickness issue by redistributing adjustment mechanisms across different spatial dimensions within the armrest body. Instead of stacking components in the thickness direction, the design uses the lengthwise and widthwise dimensions of the armrest body to accommodate sliding slots and mounting mechanisms, effectively utilizing available space in alternative dimensions
2Shape
If the armrest body is made thinner to improve aesthetics, then the design aesthetics are improved, but the space for mounting adjustment components is reduced
Solution Approach 1:
The patent segments the adjustment functions into distinct components: the first component for lengthwise adjustment with its sliding slot, the second component for widthwise adjustment with its locking mechanism, and the integrated mounting seat. This segmentation allows each component to be compact and efficiently arranged within the limited space of a thin armrest body
Solution Approach 2:
The armrest body is designed with a thin profile while incorporating flexible mounting mechanisms. The sliding slots and mounting seat use thin-walled structures that maintain structural integrity while minimizing space occupation, allowing the armrest to achieve both aesthetic thinness and functional capability
3Ease of operation
If sliding slots and mounting mechanisms are added to enable position adjustment, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into integrated components. The mounting seat combines the mounting function with the first sliding slot and first hole for lengthwise adjustment. The second component combines widthwise adjustment sliding slot with locking mechanism (locking hole and fastener). This merging reduces the number of separate parts while maintaining full adjustment functionality
Solution Approach 2:
The armrest body serves multiple functions: it provides the structural support, contains the rectangular space for components, incorporates the sliding slots for adjustment, and includes the mounting seat for attachment. The first and second components each serve dual purposes of positioning and locking, reducing overall system complexity
Data Source
AI summary
A chair armrest which includes an armrest body, a first component, a second component, and a mounting seat is revealed. The armrest body consists of an armrest cover, an armrest base and a rectangular space formed therein. The first component is mounted in the rectangular space of the armrest body and arranged at a first sliding slot of the armrest base while the second component is mounted in the rectangular space of the armrest body and disposed on the first component. The mounting seat is for loading the armrest body. The armrest body can be moved relative to the first component, the second component, the mounting seat and the protruding axis in the lengthwise direction by the first sliding slot for position adjustment. Thereby the chair armrest can be rotated or moved in the lengthwise/widthwise direction for adjustment under the condition that the overall thickness thereof is effectively reduced.