Drawer Pull-Out Locking Device with Pivoting Lock and Retaining Spring
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Solution Overview
Problem
Existing pull-out locking devices for drawers require high pull-out force when in use and high resistance to forced opening, making them cumbersome and inefficient.
Innovation Solution
A pull-out locking device with a locking part that pivots about a pivot axis, allowing a residual pull-out distance even in the locked state, and a retaining spring that minimizes the force required for release while providing high resistance to forced opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cable-like element is designed to be strong enough to resist forced opening, then the resistance to forced opening is improved, but the pull-out force required by the user increases
Solution Approach 1:
The locking mechanism is divided into two independent functional parts: a locking part that provides high resistance to forced opening through the cable-like element, and a release mechanism that uses a retaining spring to provide easy release. This segmentation allows each part to be optimized for its specific function without compromising the other.
Solution Approach 2:
The retaining spring acts as an intermediary element between the user and the locking mechanism. It stores energy during the locking phase and releases it during the release phase, reducing the force the user needs to exert while maintaining the strength of the cable-like element for forced opening resistance.
2Reliability
If the locking part is made solid and stable to prevent forced removal, then the reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The locking part is designed to be dynamic rather than static. It can transition between a locked state (where it provides high resistance) and a released state (where it allows easy movement). The retaining spring enables this dynamic behavior by providing the necessary force to move the locking part when released.
Solution Approach 2:
The system changes the state parameter of the locking part between locked and released. When locked, the cable-like element is taut and provides high resistance. When released, the retaining spring changes the position and tension state, allowing easy operation while maintaining the structural integrity for forced opening resistance.
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 device allows easy pulling out of drawers with minimal user effort while maintaining high resistance to forced opening, using a pivoting locking part and a retaining spring to manage the locking mechanism.
Implementation Method 1
a retaining spring that minimizes the force required for release while providing high resistance to forced opening
Implementation Method 2
a locking part that pivots about a pivot axis, allowing a residual pull-out distance even in the locked state
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A pull-out locking device for drawers (6) comprises bolt units (8) associated with a particular one of the pull-out guides (7), each of which bolt units comprises a bolt part (10) that is mounted so as to be movable between a passive position and an actuation position, wherein the bolt parts (10) interact with a cable-like element (12) or with a particular push element (30) of a combination of push elements. When the pull-out locking device is locked, a particular pull-out rail (3) can be pulled out over a remaining portion that is less than 1/5 of the pull-out portion, with a retaining spring (10b) being deformed. When the pull-out locking device is locked, a locking portion (10g) is at least at the end of the remaining portion in a locked position and rests against a locking surface (21c) that is moved together with the pull-out rail (3). When the pull-out locking device is released, the locking portion (10g) is at least at the end of the remaining portion in a released position in which the locking surface (21c) and the locking portion (10g) move past one another when the pull-out rail (3) is pulled out further.