Vehicle Headrest Pivot Structure for Universal Rod Spacing
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Solution Overview
Problem
Conventional vehicle headrest structures require adjustments in the relative position of fixing and adjustment seats to accommodate different support rod intervals, leading to complexity and increased manufacturing costs, and suffer from permanent deformation of positioning elastic plates due to repeated use, reducing durability and comfort.
Innovation Solution
A vehicle headrest structure featuring a fixing seat with buckle grooves and a buckle slot, accommodating a spring and steel ball, with pivot portions having circular positioning recesses, allowing for easy assembly and adjustment without length adjustments, and providing durable and comfortable support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the buckle grooves are mated with the support rods, then the fixing seat and adjustment seat can be adjusted for different intervals, but the structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The fixing seat is designed with a universal buckle slot that can accommodate support rods of different intervals. Instead of providing multiple adjustment mechanisms for different intervals, the single buckle slot structure serves multiple functions by receiving support rods with various spacing, thereby simplifying the overall structure while maintaining adaptability to different vehicle types.
2Ease of operation
If the positioning elastic plate is used to engage with positioning grooves, then the headrest body can be adjusted to desired angles, but the elastic plate undergoes permanent deformation after repeated use
Solution Approach 1:
The positioning elastic plate is designed as a replaceable component that can be easily replaced when worn out. The fixing seat includes a buckle slot that receives the positioning elastic plate, and the plate can be detached and replaced without complex tools or procedures. This approach accepts that the elastic plate has limited service life but maintains reliability through easy replacement rather than attempting to make the plate permanently durable.
3Adaptability or versatility
If the buckle grooves and adjustment seat are designed for length adjustment, then different support rod intervals can be accommodated, but the manufacturing cost increases
Solution Approach 1:
The fixing seat incorporates a universal buckle slot that serves multiple functions: it receives support rods of different intervals, holds the positioning elastic plate, and provides a simplified mounting structure. This single multi-functional component replaces what would otherwise require multiple specialized parts and adjustment mechanisms, significantly reducing manufacturing complexity and cost while maintaining compatibility with various support rod configurations.
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 assembly and use with different support rod intervals, reduces manufacturing costs, and enhances durability and comfort by maintaining elasticity and allowing for desired angle positioning of the headrest body.
Implementation Method 1
The fixing seat is provided with an accommodation recess for accommodating a spring and a steel ball therein. The steel ball is elastically pressed against one of the positioning recesses
Data Source
AI summary
A vehicle headrest structure includes a fixing seat, having a plurality of buckle grooves and a buckle slot; two cover plates, detachably connected to the fixing seat; two axle portions, disposed at outer end portions of the fixing seat respectively and each provided with a protruding axle and at least one accommodation recess, a spring and a steel ball being provided in the accommodation recess; two headrest bodies, each including a turning arm, a headrest portion at one end of the turning arm, and a pivot portion at another end of the turning arm, an inner side of the pivot portion being provided with a plurality of positioning recesses arranged in a circle, an outer side of the pivot portion being provided with a stepped perforation; and a screw, inserted in the stepped perforation and screwed to the protruding axle of each of the axle portions.