Seat-Rotating Device with Lock-Linked Rattle Suppression
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Solution Overview
Problem
Existing seat-rotating devices experience rattling issues in stationary states and require excessive force for rotation due to the rattle-preventing mechanism operating during rotation.
Innovation Solution
A seat-rotating device with a support member, an annular rotating member, a lock member, and a rattle-suppressing member that operates in association with the lock member to prevent rattling in the stationary state while facilitating rotation by releasing the rattle-preventing state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rattle-preventing mechanism operates continuously to prevent rattling in stationary state, then rattling is prevented, but the force required for rotation increases unnecessarily
Solution Approach 1:
The rattle-suppressing member transitions between two states: engaged with the support member to prevent rattling in stationary state, and disengaged to allow smooth rotation. This dynamic switching mechanism resolves the contradiction by making the rattle-preventing function active only when needed (stationary state) rather than continuously, thereby reducing rotation force while maintaining reliability.
2Stability of the object's composition
If the lock member engages with the support member to prevent rotation, then stationary position is maintained, but rotation is blocked
Solution Approach 1:
The locking mechanism is segmented into distinct functional zones: the lock member engages with the support member at specific locked positions to maintain stability, while the rattle-suppressing member engages between the lock member and support member during stationary periods. This segmentation allows the system to provide both stable positioning and ease of rotation by separating the locking function from the rattle-prevention function in both space and operation mode.
Data Source
AI summary
In a seat-rotating device that enables a seat to be rotated on a base member, a rattle-suppressing member operating in association with a lock member, which switches between the locked state in which rotation of an annular rotating member supporting a seat frame is prevented and release of the locked state, is in close contact with both a support member and the annular rotating member when the lock member is at the locked position, and a gap is created between the support member and the annular rotating member when the lock member attains the lock release position. Accordingly, it is possible to prevent the seat from rattling when it is in a stationary state and to facilitate rotation by releasing the rattle-preventing state when the seat is rotating.