Integrated Locking Bar for Cabinet Drawer Interlocking
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Solution Overview
Problem
Existing filing cabinet interlocking systems are cumbersome, require complex assembly, and do not efficiently manage space limitations, often locking all drawers or allowing only one to open, without the flexibility to control separate sections or reduce component count, leading to increased weight and production costs.
Innovation Solution
A multi-drawer cabinet with an integrated interlocking and locking mechanism using a minimal number of components, featuring vertically stacked interlock pieces with wedge-ended members and a spring load system, allowing only one drawer to be opened at a time, while enabling separate sections to be independently opened or locked, and reducing spatial constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prior art interlocking systems are used to prevent simultaneous drawer opening, then drawer safety is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the locking mechanism and interlocking system into a single integrated assembly. The locking bar serves dual functions: it locks all drawers when engaged, and simultaneously acts as the interlocking element that prevents multiple drawers from opening. This merging eliminates the need for separate interlocking components, directly reducing device complexity while maintaining safety functionality.
Solution Approach 2:
The locking bar is designed as a multi-functional component that performs both locking and interlocking operations. When the locking bar is positioned to engage the locking surface, it simultaneously locks the drawer and prevents other drawers from opening by blocking their wedge-ended members. This universal design reduces the number of components needed while ensuring reliable safety operation.
2Reliability
If prior art interlocking systems with multiple components are used, then interlocking function is achieved, but weight and production cost increase
Solution Approach 1:
By merging the locking and interlocking functions into a single locking bar component, the patent eliminates multiple separate parts that would contribute to overall weight. The integrated design uses the same structural element for both functions, directly reducing the total weight of the cabinet while maintaining full interlocking functionality.
3Ease of operation
If prior art interlocking systems are used, then drawer opening control is achieved, but space requirements and production cost increase
Solution Approach 1:
The patent integrates the interlocking mechanism within the existing locking structure space. The locking bar moves within the same vertical pathway used for locking, and the wedge-ended members on drawers engage with this same bar. This merging allows drawer opening control without requiring additional space beyond what is already allocated for the locking mechanism.
Solution Approach 2:
The interlocking function is achieved by utilizing the vertical dimension of the locking bar's movement pathway. As the locking bar moves vertically to lock or unlock drawers, it simultaneously engages or disengages from the wedge-ended members on different drawers, creating an interlocking effect in the vertical dimension without requiring additional horizontal or depth space.
4Reliability
If locking mechanism is activated in prior art cabinets, then all drawers are locked, but flexibility to open individual drawers is lost
Solution Approach 1:
The locking bar is designed to be dynamically positionable at different vertical locations, enabling it to selectively engage with different drawers. When positioned at the top, it locks all drawers; when positioned lower, it allows the top drawer to open while still preventing other drawers from opening. This dynamic positioning provides flexibility while maintaining the locking function.
Solution Approach 2:
The locking bar can be positioned to create different locking configurations for different local areas (drawers). By moving the locking bar to specific positions, users can locally unlock individual drawers while maintaining locked status for other drawers, providing adaptability without compromising overall security.
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
The solution effectively prevents simultaneous drawer opening, reduces weight and production costs, enhances storage efficiency, and allows for flexible control of drawer openings across sections, addressing the limitations of prior systems by integrating common elements and minimizing components.
Implementation Method 1
a spring load system
Data Source
AI summary
A safety lock system for cabinet drawers that provides a lock mechanism that in a locked position prevents any drawer from opening and in an unlocked position allows only one drawer to be opened at any one time. The system includes a slide wedge-ended member attached to each drawer, an inner cabinet wall and a support member both of which include vertically aligned T-shaped slots for receiving interlock pieces. Each interlock piece includes an upper protrusion and a lower protrusion and a spacer bar connecting the two protrusions.