Drawer Interlock Linkage to Prevent Simultaneous Opening
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Solution Overview
Problem
Conventional cabinet drawer interlock mechanisms fail to effectively restrict all drawers from being opened simultaneously, potentially leading to instability due to uneven weight distribution, especially when heavy loads are placed in one drawer.
Innovation Solution
A drawer interlock mechanism comprising at least two drawers with a fixture, a linking frame, locking members, and guiding members that ensure all drawers remain locked when one is open, utilizing longitudinal slots, locating troughs, and rotatable plates to prevent simultaneous opening by blocking other drawers' sliding mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional drawer interlock mechanisms are used, then drawer opening is restricted, but multiple drawers can still be opened simultaneously leading to instability
Solution Approach 1:
The patent merges multiple locking functions into a single integrated locking mechanism. The locking bar simultaneously interacts with multiple locking holes in different drawers through a unified structure, ensuring that when one drawer is opened, all other drawers are automatically locked through the interconnected locking bar and spring mechanism.
Solution Approach 2:
The locking bar serves as an intermediary element that transmits the opening action of one drawer to the locking mechanism of other drawers. When a drawer is pulled open, the locking bar rotates and engages the spring mechanism, which then activates the locking holes in other drawers, preventing them from opening simultaneously.
2Ease of operation
If drawers can be opened simultaneously, then ease of access is improved, but cabinet stability deteriorates due to tilting or tipping
Solution Approach 1:
The patent applies preliminary anti-action by pre-configuring the locking mechanism to automatically prevent simultaneous drawer opening before instability can occur. The spring-loaded locking bar is positioned to engage locking holes in advance, creating a preventive barrier against multiple drawers opening at once, thereby maintaining cabinet stability before the problem arises.
3Quantity of substance
If heavy loads are placed in the cabinet, then storage capacity is improved, but the risk of tilting or tipping increases
Solution Approach 1:
The locking mechanism provides feedback control for drawer opening based on the cabinet's stability state. The spring mechanism continuously monitors the position of the locking bar and adjusts the locking force accordingly. When heavy loads are present and the cabinet is at risk of tilting, the feedback mechanism ensures that drawers are locked in place, preventing actions that would exacerbate instability.
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 mechanism ensures that all drawers remain locked when one is open, preventing cabinet tilting or tipping and enhancing stability by maintaining even weight distribution across drawers.
Implementation Method 1
a spring, one end of the spring being connected to the locking bar and the other end of the spring being connected to the fixing plate
Data Source
AI summary
A drawer interlock mechanism includes at least two drawers, a fixture, a linking frame, locking members and guiding members. The drawers may be pulled in and out. The drawers are lined straight with each other. The fixture is disposed at one side the drawers, and is formed with slots corresponding in position and in number to the guiding members. The linking frame is disposed on the fixture. Each guiding member is secured to the side of each drawer. When one of the drawers is open, the guiding member of the open drawer will link the relative locking member to move the linking frame, which then links the other locking members. The guiding member of the open drawer triggers the relative locking member to lock the linking frame temporarily, and the other locking members block their relative guiding members so that the other drawers are unable to slide.