Furniture Locking Device with Dynamic Blocking Elements
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Solution Overview
Problem
Existing locking devices for movable furniture parts are inflexible, making it difficult to simultaneously unlock all movable furniture parts, which is inconvenient during dismantling or reconfiguration, such as when moving house.
Innovation Solution
A locking device with latches that can move between locking and unlocking positions, featuring a guide rail with blocking elements that allow only one movable furniture part to be opened at a time for anti-tipping protection, but can be easily released to allow all parts to be opened independently via a switching mechanism, enabling flexible operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blocking elements are used to allow only one latch to move into the unlocking position at a time, then anti-tipping protection is improved, but flexibility and ease of operation deteriorate when dismantling is required
Solution Approach 1:
The blocking elements are designed to be dynamically repositionable between a first position (protruding from the guide rail to prevent simultaneous opening) and a second position (retracted into the guide rail to allow all latches to be opened). This dynamic repositioning is achieved through the switching mechanism that displaceably holds the blocking elements along the guide rail, enabling the system to adapt its behavior based on operational requirements.
Solution Approach 2:
The locking device is segmented into independent controllable components: multiple latches (16) that can be individually actuated, blocking elements (20) that can be independently positioned, and a switching mechanism (15) that controls the blocking elements. This segmentation allows the system to provide selective blocking - preventing simultaneous opening during normal use while allowing individual opening during dismantling when the blocking elements are retracted.
2Reliability
If a locking device allows only one movable furniture part to be opened at a time, then protection against tipping is improved, but flexibility for simultaneous unlocking deteriorates
Solution Approach 1:
The system provides dynamic adaptability through the switching mechanism that can reposition the blocking elements between two functional states. In the first state, blocking elements protrude to enforce single-latch operation for anti-tipping protection. In the second state, blocking elements are retracted to allow all latches to be opened simultaneously, providing versatility for dismantling operations.
Solution Approach 2:
The blocking elements serve multiple functions: they provide anti-tipping protection during normal operation by preventing simultaneous opening, and they enable complete unlocking during dismantling when retracted. The switching mechanism provides universal control over the blocking elements' position, allowing the same hardware to serve both protective and flexible operational requirements.
Data Source
AI summary
A locking device for movable furniture parts has a guide rail with displaceable blocking elements, a plurality of latches that can be coupled to a movable furniture part, and, in a locking position, block an opening of the movable furniture part. The blocking elements are movable into a locking position in which all the latches are blocked by the blocking elements from a movement into an unlocking position, and the blocking elements are displaceable along the guide rail in an anti-tipping position via one of the latches, from the locking position into the unlocking position. When one of the latches is positioned in the unlocking position, the movement of all further latches into the unlocking position is blocked, so that only one of the movable furniture parts is moveable into an opening position.