Double Opening Storage Lid Friction Stabilization
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Solution Overview
Problem
The existing double opening storage device is unstable in holding the lid in the opened state due to the balance between the lid's weight and the urging force, leading to potential vibration around the rotation shaft when external forces, such as vehicle vibrations, are applied.
Innovation Solution
The device incorporates projections on the shaft and support members that interfere with each other when the lid transitions from a closed to an open state, utilizing friction to stabilize the lid in the open position, preventing relative rotation and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the lid is held in the opened state by balancing the weight of the lid and the urging force of the urging member, then the lid can be maintained in the opened state without additional locking mechanisms, but the lid is likely to vibrate around the rotation shaft and the balance is unstable when external forces are applied
Solution Approach 1:
A damping member is introduced as an intermediary element between the shaft member and the support member. This damping member absorbs external forces (such as vehicle vibrations) before they can disrupt the balance between the lid weight and urging member force, thereby maintaining stable holding of the lid in the opened state without requiring additional locking mechanisms
Solution Approach 2:
The damping member converts harmful external vibrations and forces into beneficial damping effects. By allowing controlled relative movement between the shaft member and support member, the damping member dissipates external energy that would otherwise cause lid vibration, transforming the harmful impact into a stabilizing force
2Ease of operation
If the shaft member is allowed to rotate freely relative to the support member to enable lid opening and closing, then the lid can be easily operated, but the lid cannot be stably held in the opened state due to continuous rotation capability
Solution Approach 1:
The system dynamically adjusts its characteristics based on operating conditions. During lid opening/closing operation, the shaft member can rotate freely relative to the support member. When the lid reaches the opened state, the damping member engages to provide resistance against further rotation, enabling stable holding while maintaining operational flexibility
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
This configuration ensures the lid is stably held in the open state by generating sufficient friction, inhibiting vibration and maintaining stability even under external influences like vehicle vibrations.
Implementation Method 1
The projection of the shaft member and the projection of the support member do not interfere with each other when the lid is in the closed state, and interfere with each other while the lid is shifting from the closed state to a predetermined opened state.
Data Source
AI summary
A double opening storage device includes two opening and closing mechanisms that open and close a lid leftward and rightward relative to a box body. Each opening and closing mechanism include: a shaft member disposed so as to be coaxial with a rotation shaft; a support member that supports the shaft member so as to rotate the shaft member; an urging member that generates urging force for rotating the shaft member relative to the support member in an opening direction; and a locking device that holds the lid in a closed state against the urging force, and cancels, by an opening operation, holding of the lid. The shaft member and the support member include opposing surfaces, respectively, which are spaced from each other in the lid closed state, and projections, respectively, which interfere with each other while the lid is shifting from the closed state to a predetermined opened state.