Pull-Out Guide With Adjustable Lateral Guide Part for Play Reduction
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Solution Overview
Problem
Conventional pull-out guides for furniture parts, such as drawers, face instability and alignment issues due to manufacturing tolerances and surface misalignments, leading to noticeable play and friction, which affects the lateral stability and user experience.
Innovation Solution
A pull-out guide system with an openable and closable locking device allows for easy adjustment of the lateral guide part's position relative to the transverse direction by pressure, using a support part that can be rotated or linearly displaced, ensuring precise alignment and reduced play between guide rails, thereby enhancing stability and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sufficient lateral play (1-3mm) is provided in the guide rails to accommodate manufacturing tolerances and surface misalignments, then the guide system can accommodate installation deviations, but the lateral stability is insufficient and the guide system appears unstable with noticeable play
Solution Approach 1:
The lateral guide part is made adjustable in its position relative to the transverse direction through a locking device that can be opened and closed. This allows the guide system to adapt dynamically to different installation conditions while maintaining stability when locked in position
Solution Approach 2:
The position of the lateral guide part can be adjusted by applying pressure parallel to the transverse direction, changing the lateral clearance parameter to accommodate installation deviations, then fixed in the optimal position using the locking device
2Stability of the object's composition
If no lateral play is provided in the guide rails to ensure lateral stability, then the guide system appears stable, but high lateral forces occur with even small installation deviations leading to noticeably increased frictional forces
Solution Approach 1:
The lateral clearance parameter can be adjusted by positioning the lateral guide part at different locations relative to the base profile, allowing optimization of the balance between stability and friction for specific installation conditions
Solution Approach 2:
The locking device allows the lateral guide part position to be changed during installation to accommodate tolerance variations, then fixed to maintain optimal stability-friction balance throughout operation
3Stability of the object's composition
If adjustable lateral guide parts are provided to optimize lateral stability, then installation dimension deviations can be accommodated with minimal play, but the adjustment process becomes complex requiring multiple parts and difficult accessibility
Solution Approach 1:
The adjustment function is separated into two independent functions: positioning (achieved by pressure during installation) and fixing (achieved by the locking device). This simplifies the overall adjustment mechanism while maintaining adjustability
Solution Approach 2:
The lateral guide part can be positioned automatically by installation pressure without requiring complex adjustment mechanisms, and the locking device provides self-contained fixing functionality
Data Source
AI summary
Pull-out guide for pulling out a pull-out furniture part (1) from a furniture body (2), comprising at least a first and a second guide rail (7, 8) which can be displaced relative to one another in and counter to a pull-out direction (5), the first guide rail (7 ) has a base profile (13) and at least one on the base profile (13) held lateral guide unit (14) with a lateral guide part (15). The lateral guide part (15) acts to limit play of the second guide rail (8) relative to the first guide rail (7) in at least one transverse direction (50) perpendicular to the extension direction (5) with at least one lateral guide surface (30, 31) of the second guide rail ( 8) together. The lateral guide unit (14) has an openable and closable locking device (19), the position of the lateral guide part (15) in relation to the transverse direction (50) in an open state of the locking device (19) being indicated by a parallel to the transverse direction (50). the lateral guide part (15) can be adjusted relative to the base profile (13) of the first guide rail (7) under the pressure exerted, and the position of the lateral guide part (15) in relation to the transverse direction (50) is fixed when the locking device (19) is in a closed state.