Vehicle Seat Wire Locking Structure for Strong Panel Attachment
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Solution Overview
Problem
Existing vehicle seat designs face challenges in securing attachment strength of wires to flat parts of the seat frame without complicating the structure, particularly when connecting thin wires to panels or forming engaging hooks.
Innovation Solution
A vehicle seat design featuring a wire with a bent or diameter-enlarged portion at one end, which is inserted into a locking portion on the seat frame, along with a separation preventing member to ensure stable axial force transmission and prevent wire separation, thus securing attachment strength with a simple structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding is used to connect a thin wire to a plate material, then attachment strength can be achieved, but the welding length must be increased which complicates the structure
Solution Approach 1:
The patent changes the physical parameters of the wire by forming a diameter-enlarged portion or bent portion at the end of the wire. This parameter change allows the wire to be mechanically engaged with the locking portion without requiring extensive welding, thus maintaining attachment strength while reducing structural complexity
Solution Approach 2:
The wire is segmented into different portions with different functions: the main body of the wire maintains its original diameter for flexibility, while the end portion is transformed into a diameter-enlarged portion or bent portion for mechanical engagement. This segmentation allows the wire to serve both as a flexible connector and a mechanically engaged fastener
2Strength
If engaging portions are formed on the wire and seat frame to enable hooking attachment, then connection can be achieved, but the structure becomes complicated due to the need to form and prevent coming off of engaging portions
Solution Approach 1:
Instead of forming complex engaging portions on the wire and corresponding engaged portions on the seat frame, the patent inverts the approach by creating a simple locking portion on the seat frame and a corresponding simple bent or diameter-enlarged portion on the wire. This inversion simplifies the structure while maintaining the hooking attachment function
Solution Approach 2:
The patent extracts the essential function of mechanical engagement from the complex engaging portion design and implements it through a simpler diameter-enlarged portion or bent portion on the wire that can be inserted into and locked by the locking portion on the seat frame, eliminating the need for complex interlocking features
3Device complexity
If a simple attachment method is used to connect the wire to the flat part, then structural simplicity is maintained, but attachment strength may be compromised
Solution Approach 1:
The patent applies curvature by forming a bent portion or diameter-enlarged portion at the end of the wire. This curved or enlarged geometry provides mechanical advantage for engagement with the locking portion, enabling simple attachment structure to achieve sufficient attachment strength through geometric design rather than complex mechanisms
Data Source
AI summary
A vehicle seat including: a seat frame forming a framework of the vehicle seat; and a wire connected to the seat frame and to which an axial force in an axial direction thereof is configured to be applied, wherein a bent portion or a diameter-enlarged portion is provided to at least one end portion of the wire, wherein a flat part of the seat frame is provided with a locking portion into which the bent portion or the diameter-enlarged portion is inserted and which is configured to receive the axial force in an in-plane direction, and wherein a separation preventing member is attached to the flat part and prevents the wire from being separated from the flat part in a state where the bent portion or the diameter-enlarged portion is inserted into the locking portion.