Drawer Slide Locking Fitting With Movable Detent Recess
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing locking fittings for pull-out guides are prone to material stress and jamming, especially when the spring bar is repeatedly deformed, leading to unreliable unlocking mechanisms and potential overload protection failures.
Innovation Solution
A locking fitting with a detent trough that is slidably or pivotably mounted, allowing the switching element to be unlocked during a pulling movement, featuring a movable part prestressed by a spring to ensure reliable resetting and latching, and an energy storage device for controlled movement, enabling unlocking via mechanical, electromechanical, or magnetic means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the spring bar is repeatedly deformed to unlock the locking pawl, then the locking mechanism can be opened, but high material stress occurs and the spring bar may jam or fail to reset
Solution Approach 1:
The detent trough is designed to be movable rather than fixed, allowing it to dynamically adjust its position during the unlocking process. The detent trough can pivot about an axis or translate along a guideway, enabling the switching element to be released from the latched position without excessive force on the spring bar. This dynamic design resolves the contradiction by providing reliable unlocking while preventing material stress and jamming.
Solution Approach 2:
The movable detent trough acts as an intermediary between the switching element and the housing. Instead of directly forcing the spring bar to move the fixed detent recess, the intermediary detent trough absorbs and redistributes the mechanical stress through its movable design, preventing direct stress concentration on the spring bar and maintaining system reliability.
2Ease of operation
If the detent recess is fixed in the housing, then the structure is simple, but the switching element cannot be reliably unlocked during pulling movements
Solution Approach 1:
The detent trough is designed as a movable component that can pivot or translate, transforming the static detent mechanism into a dynamic one. This allows the switching element to be reliably released during pulling movements by allowing the detent trough to move and create clearance, while the complexity is managed through simple pivot points or guideways.
Solution Approach 2:
The detent trough is separated from the housing as an independent movable component rather than being integrally formed. This segmentation allows the detent trough to move independently to enable switching element release, while the housing remains structurally simple. The movable part can be a disc, block, or other shape with minimal additional complexity.
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 ensures reliable unlocking of the locking fitting even after repeated use, prevents material stress, and maintains functionality by allowing unlocking through both pushing and pulling movements, with an overload protection mechanism that supports smooth operation.
Implementation Method 1
the movable part of the detent recess is prestressed into an initial position by a spring
Implementation Method 2
an energy storage device for controlled movement
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
The device has a cam segment in which a switching element (10) is guided. The segment has a loop at which a locking recess for the switching element is provided, where the switching element is pre-stressed by a force accumulator i.e. compression spring (63), in a locking position. The locking recess is partially supported in a displaceable and/or pivotable manner, and the switching element is released from the locking position. The recess has two movable parts pre-stressed by a spring in an initial position, rotatable around an axis and movably supported along a linear guide.