Drawer Panel Attachment Device with Axis-Displacement Locking
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Solution Overview
Problem
Existing fastening devices for drawer panels lack structural simplicity while ensuring functional reliability and effective locking mechanisms, particularly under heavy stress or shaking movements.
Innovation Solution
The fastening device employs a catch element with a pivotably mounted shaft section, where the axis of rotation is shifted by a guide cam and connecting link, achieving a secure locking position that aligns perpendicularly to the holding element's movement, eliminating the need for additional locking mechanisms by positioning the axis of rotation to minimize torque exertion during drawer opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple retaining spring is used for fastening the drawer panel, then the device complexity is reduced, but the reliability of the fastening mechanism deteriorates under heavy stress or shaking movements
Solution Approach 1:
The catch element is designed to dynamically shift its axis of rotation from a first position to a second position during the locking process. This dynamic repositioning allows the catch element to transition from an engaged state with the retaining element to a locked state where the axis displacement prevents disengagement, thereby improving reliability without adding complex components
Solution Approach 2:
The invention changes the positional parameter of the catch element's axis of rotation during operation. By displacing the axis from the first position to the second position, the geometric relationship between the catch element and retaining element changes, creating a locked state that resists shaking and heavy stress while maintaining structural simplicity
2Reliability
If the axis of rotation is displaced to achieve a secure locking position, then the reliability of the locking mechanism is improved, but the device complexity increases due to guide cams and connecting links
Solution Approach 1:
The guide cam is integrated directly into the connecting link structure, merging two components into one. This integration reduces the number of separate parts while maintaining the functionality of both the connecting link (which transmits motion) and the guide cam (which guides the axis displacement), thereby improving locking reliability without proportionally increasing device complexity
Solution Approach 2:
The connecting link serves multiple functions: it connects the catch element to the frame, guides the displacement of the axis of rotation, and incorporates the guide cam functionality. This multi-functionality reduces the need for separate components, achieving reliable locking with a structurally simple design
3Reliability
If the axis of rotation is positioned to minimize torque during drawer opening, then the reliability of the locking mechanism is improved, but the ease of operation deteriorates as additional mechanical control devices are required
Solution Approach 1:
The mechanical control device with teeth is integrated into the catch element itself, which performs the dual function of locking and controlling the axis displacement. The teeth on the catch element engage with corresponding teeth on the guide cam, creating a self-contained control mechanism that prevents unintended release while allowing controlled operation, thereby improving reliability without significantly compromising ease of operation
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
This configuration provides a structurally simple and reliable locking mechanism that prevents unintentional release, ensuring the drawer panel remains securely fastened even under stress, as the displacement of the axis of rotation defines a precise catch position, supported by mechanical control devices like teeth, and the spring device acts without bending moments.
Implementation Method 1
The displacement of the axis of rotation is defined by a guide cam and a backdrop
Implementation Method 2
the spring device acts without bending moments
Data Source
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AI summary
An attachment device (100) for attaching a panel (2) of a drawer (1) to a drawer wall (4a, 4b), wherein the attachment device (100) has a holding element (101) that can be arranged on the panel side, and a catch device that can be arranged on the drawer wall side and has a catch element (116) that is pivotally mounted on a base element, wherein the catch element has an axis of rotation and a force accumulator can apply force to the catch element, said catch element being moveable back and forth between a release position and a catch position, wherein the catch element (116) is designed, in the catch position, to hold the holding element (101) on the drawer wall. The device is characterised in that the catch element is locked in the catch position by means of a local displacement of the axis of rotation of the catch element (116).