Pull-Out Guide Locking for Drawer Front Panel Assembly
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Solution Overview
Problem
Existing pull-out guide systems for furniture drawers face challenges in accessibility, particularly when attaching a front panel, as the drawer rail often becomes inaccessible or gets stuck due to the design, preventing proper attachment and causing issues with the drawer's movement between open and closed positions.
Innovation Solution
An automatic release element that unlocks the locking mechanism between the drawer rail and the body rail when the drawer or front panel is attached, allowing for easier assembly and attachment by stopping the drawer rail at an intermediate position, enabling the drawer to be fully closed without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drawer rail is allowed to move freely between open and closed positions, then the drawer can be easily assembled and disassembled, but the drawer rail cannot be stopped at an intermediate position for easy attachment of the drawer or front panel
Solution Approach 1:
The locking element automatically locks the drawer rail at an intermediate position when the drawer or front panel is attached, and automatically releases when the drawer is pushed to the closed position. The system serves itself without manual intervention - the attachment process triggers the locking, and the closing motion triggers the release.
Solution Approach 2:
The locking element is positioned and configured in advance to automatically engage with the stop extension on the cabinet rail when the drawer or front panel is attached. The geometry of the locking element and stop extension is predetermined to ensure automatic locking at the correct intermediate position before final assembly is complete.
2Ease of operation
If the drawer rail is stopped at an intermediate position during attachment, then accessibility for attaching the drawer or front panel is improved, but the drawer rail cannot reach the complete closed position until the locking element is released
Solution Approach 1:
The locking element automatically releases when the drawer is pushed to the closed position, eliminating the need for manual unlocking. The system detects the closed position automatically and releases the lock, allowing the drawer rail to reach its final position without delay.
Solution Approach 2:
The locking element is designed to respond to the position of the drawer - it remains engaged at intermediate positions and automatically disengages when the drawer reaches the closed position. This feedback mechanism ensures the lock releases at the appropriate moment based on the drawer's position.
3Reliability
If a locking element is used to prevent drawer removal when open, then security is improved, but manual actuation is required to release the lock and remove the drawer
Solution Approach 1:
The locking element automatically engages when the drawer is pulled to the open position and automatically releases when the drawer is pushed to the closed position. The system performs both locking and unlocking functions automatically based on drawer position, eliminating the need for manual actuation for either operation.
Data Source
Figure 1~1b
Figure 2~5
Figure 6
AI summary
The invention relates to an arrangement, comprising a drawer (1) and a pull-out guide (2) for the drawer (1), wherein the drawer (1) has a drawer container (8) and a front panel (10) that can be connected to the drawer container (8) and wherein the pull-out guide (2) has at least one body rail (3) for fastening to a furniture body (4) and at least one drawer rail (5), which can be moved relative to the body rail (3) between an open position (OS) and a closed position (SS) and on which the drawer (1) can be fastened to the pull-out guide (2), and comprising a releasable locking element (6), by means of which, in a locking position (V), the motion of the drawer rail (5) in the closing direction (SR) relative to the body rail (3) can be stopped in an intermediate position (ZS) before the closed position (SS) is reached, and by means of which, in a release position (L), the motion of the drawer rail (5) in the closing direction (SR) relative to the body rail (3) can be released until the closed position (SS) is reached, wherein the locking element (6) can be automatically released by a release element (7), either when the drawer (1) is fastened to the drawer rail (5) or when the front panel (10) is attached to the drawer container (8), which is already fastened to the drawer rail (5).