Seat Assembly Unlock Retention Mechanism for Easy Separation
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Solution Overview
Problem
Conventional seat assemblies require users to manually retract a tongue and separate the seat body from the base frame against a resilient force, making it inconvenient to achieve both actions simultaneously.
Innovation Solution
An unlocked-state retention device with pushers movably disposed in the seat body, featuring a push member and resilient member that project to separate the seat body from the base frame when unlocked, preventing the seat body from returning to a locked state, allowing for easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking unit uses a resilient member to urge the tongue to engage the locking groove, then the locked state is secure and reliable, but the user cannot easily separate the seat body from the base frame without manually retaining the tongue
Solution Approach 1:
The pusher is pre-positioned in the unlocked state, ready to automatically push the tongue when the locking groove moves away. This preliminary positioning eliminates the need for users to manually hold the tongue retracted during separation, as the pusher is already in place to perform the retaction action automatically when needed.
Solution Approach 2:
The pusher acts as an intermediary mechanism between the locking groove's movement and the tongue's retraction. When the locking groove moves away during separation, it triggers the pusher to push the tongue, mediating the force transmission and automating the tongue retraction process without requiring direct user intervention.
2Device complexity
If the user must manually retain the tongue and separate the seat body simultaneously, then the locking mechanism remains simple, but the operation becomes complex and inconvenient
Solution Approach 1:
The pusher provides self-service functionality by automatically retracting the tongue when the locking groove moves away during separation. This self-acting mechanism eliminates the need for users to perform multiple coordinated actions (retaining the tongue while separating), as the system automatically handles the tongue retraction through the pusher's resiliently biased movement.
3Productivity
If the tongue is held retracted against the resilient force during separation, then the seat body can be removed, but the user experiences difficulty performing this action
Solution Approach 1:
The pusher extracts the difficult task of overcoming resilient force from the user's manual operation. By positioning the pusher to automatically push the tongue when the locking groove moves away, the system separates the tongue retraction function from direct user intervention, allowing users to simply separate the seat body without needing to simultaneously combat the resilient force.
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
Facilitates convenient separation of the seat body from the base frame by allowing the push members to project and retract automatically, eliminating the need for simultaneous manual retraction of the tongue and separation, enhancing user convenience.
Implementation Method 1
a resilient member connected between the push member and the seat body and configured to urge the push member to project from the bottom surface of the seat body
Data Source
AI summary
An unlocked-state retention device is adapted for use in a seat assembly. The seat assembly includes a base frame and a seat body, which is mounted removably on the base frame through a locking unit to lock or unlock the seat body relative to the base frame such that the seat body is placed in a locked state or an unlocked state. The unlocked-state retention device includes a pusher adapted to be disposed movably in one of the base frame and the seat body, and includes a push member to retract ably project from the one of the base frame and the seat body and to push the other one of the base frame and the seat body when the seat body is unlocked relative to the base frame.