Vehicle Seat Armrest Hook Mounting Strength via Merging and Nesting
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Solution Overview
Problem
Existing vehicle seat hook members lack sufficient mounting strength, limiting them to securing only lightweight articles.
Innovation Solution
A vehicle seat design featuring a pivotably mounted armrest with a recessed portion and a hook member attached to a shaft member, including a presser portion to grip the skin layer and a flange portion to prevent baggage displacement, enhancing mounting strength and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the hook member is attached only to the armrest body, then the structure is simple, but the mounting strength is insufficient for heavy baggage
Solution Approach 1:
The hook member is merged with the shaft member by direct attachment to the distal end of the shaft. This combines the support function of the shaft member (which has high mounting strength due to fixed attachment to the seatback) with the hooking function of the hook member, thereby enhancing the overall mounting strength without requiring a completely separate support structure
Solution Approach 2:
The hook member is fitted into the recessed portion of the armrest body, creating a nested structure where the hook member is partially received within the armrest body. This nested arrangement provides both structural support and secure positioning, enhancing mounting strength while maintaining a compact design
2Strength
If the hook member is directly attached to the shaft member and fitted in the armrest body, then the mounting strength is enhanced, but the structure becomes more complex
Solution Approach 1:
The hook member is merged with the shaft member by direct attachment to the distal end of the shaft. This combines the support function of the shaft member (which has high mounting strength due to fixed attachment to the seatback) with the hooking function of the hook member, thereby enhancing the overall mounting strength without requiring a completely separate support structure
Solution Approach 2:
The hook member is fitted into the recessed portion of the armrest body, creating a nested structure where the hook member is partially received within the armrest body. This nested arrangement provides both structural support and secure positioning, enhancing mounting strength while maintaining a compact design
3Ease of manufacture
If the hook member structure is simplified, then the manufacturing is easier, but the ability to prevent baggage displacement is reduced
Solution Approach 1:
The flange portion extends in a direction substantially perpendicular to the axis of the shaft member, adding a dimensional constraint that prevents baggage from displacing off the hook member in the lateral direction. This perpendicular extension provides effective baggage retention while maintaining a relatively simple overall structure that is easy to manufacture
Data Source
AI summary
A vehicle seat includes an armrest having a body provided with a recessed portion recessed toward a widthwise inward direction of the seat in such a manner as to surround a shaft member, and a hook member attached to a distal end of the shaft member and fitted in the recessed portion. The hook member includes a presser portion for pressing a skin layer of the armrest with the skin layer gripped between the presser portion and the body of the armrest, a baggage engagement portion extending from the presser portion in a widthwise outward direction of the seat for hooking engagement with the baggage, and a flange portion located at a distal end of the baggage engagement portion and extending in a direction substantially perpendicular to an axis of the shaft member for preventing the baggage from displacing off the hook member.