Drawer Box String Pull Mechanism for Handle Damage Prevention
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Solution Overview
Problem
Existing drawer boxes for electronic devices require an external force to move the second case out of the first case, which can lead to breakage of the second case or the handle part.
Innovation Solution
A box design featuring a first case with a partition wall and a string coupled to the partition wall, allowing the second case to be inserted and withdrawn by pulling the exposed part of the string, utilizing a pulley principle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an external force is applied to the second case to move it out of the first case, then the drawer box can be opened for product access, but the second case or handle part may be broken by the external force
Solution Approach 1:
The patent introduces a string as an intermediary element that connects the partition wall to the second case. Instead of applying force directly to the second case or handle, the user pulls the string which then transmits the force through the partition wall to move the second case. This intermediary mechanism distributes and softens the force application, preventing direct stress concentration that would cause breakage while still enabling easy opening operation.
2Ease of operation
If a handle is provided on the second case for pulling, then the user can easily grip and move the case, but the handle part becomes vulnerable to breaking under external force
Solution Approach 1:
The patent extracts the force application point from the second case itself by using a separate string element. The string is attached to the partition wall rather than requiring a handle on the second case, thereby eliminating the handle structure that would be prone to breaking. The string serves as the gripping element, removing the vulnerability associated with traditional handles while maintaining ease of operation.
3Device complexity
If the second case is directly inserted into the first case without a partition wall, then the structure is simpler, but the second case cannot be easily withdrawn without applying force directly to it
Solution Approach 1:
The patent applies preliminary action by pre-attaching the string to the partition wall before the second case is inserted into the first case. This pre-prepared connection mechanism ensures that when the user pulls the string during withdrawal, the force is already routed through the partition wall structure. This preliminary setup enables easy case withdrawal without requiring direct force application to the case itself, while maintaining relatively simple overall structure.
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 design prevents damage to the second case and handle during withdrawal and allows for easy movement of the case out of the package, enhancing user convenience.
Implementation Method 1
A box design featuring a first case with a partition wall and a string coupled to the partition wall, allowing the second case to be inserted and withdrawn by pulling the exposed part of the string, utilizing a pulley principle.
Data Source
AI summary
A box according to an embodiment includes a first case including a first opening in at least one surface thereof, a second case inserted into the first case through the first opening, a partition wall configured to partition an interior of the first case into an area into which the second case is inserted and a remaining area, and a string which has one end coupled to the partition wall and which is configured such that when the second case is inserted into the first case, a part thereof is inserted into the first case and a part of a remainder thereof is exposed at an outside of the first case, wherein at least a part of the second case is withdrawn from the first case by the part of the remainder thereof being pulled in a state in which the second case is inserted in the first case.