Tall Cabinet Pull-Out Guide With Pivoting Rail Lock Lever
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Solution Overview
Problem
Existing pull-out guides for tall cabinets have complex designs and mechanisms that complicate the blocking and release of the extended pull-out rail, making them less reliable and more difficult to manufacture.
Innovation Solution
A pull-out guide with a pivotably mounted blocking lever that aligns parallel to the pull-out direction, allowing the lever to be actuated by the extendable furniture part and engage with a body-fixed stop to block or release the insertion of the pull-out rail, ensuring reliable blocking and unlocking in both basic and pivoted positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking mechanism is used to prevent unintentional relocation of the extended pull-out rail, then reliability is improved, but device complexity increases due to additional locking components
Solution Approach 1:
The blocking lever is integrated with the pull-out furniture part itself, combining the blocking function with the existing structural component. This eliminates the need for separate blocking components and reduces overall device complexity while maintaining reliable blocking functionality.
Solution Approach 2:
The blocking lever serves multiple functions: it acts as both a blocking mechanism to prevent unintentional relocation and as part of the pull-out furniture part structure. This multi-functionality reduces the number of separate components needed in the system.
2Reliability
If a complex blocking mechanism with multiple levers is used to block insertion in pivoting positions, then blocking reliability is improved, but ease of manufacture deteriorates due to complicated assembly
Solution Approach 1:
The blocking lever is integrated directly into the pull-out furniture part, combining what would otherwise be separate blocking components into a single unified structure. This integration significantly simplifies manufacturing and assembly processes while maintaining reliable blocking functionality.
Solution Approach 2:
The blocking function is extracted from complex multi-lever mechanisms and simplified into a single integrated blocking lever that is part of the pull-out furniture part itself, reducing manufacturing complexity.
3Force
If massive trolleys with cylindrical gears and support wheels are used to pull out and push in the tall cabinet, then pulling force is improved, but device complexity increases due to elaborate design
Solution Approach 1:
The complex carriage structure with cylindrical gears and support wheels is completely removed from the design. The invention achieves the necessary pulling force through a simplified rail and blocking lever mechanism without requiring massive trolleys.
Solution Approach 2:
The elaborate mechanical system with gears and multiple wheels is replaced with a simpler mechanism using the blocking lever and rail interaction, reducing device complexity while maintaining functional effectiveness.
Data Source
Figure 1~2
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AI summary
A pull-out guide for a furniture part, in particular a tall cabinet pull-out, which can be extended from a furniture carcass (5) and is pivotable about a vertical axis (13) between a home position and a swivel position, comprises a carcass rail (1) to be attached to the furniture carcass (5) and a pull-out rail (3), as well as a locking mechanism that can be actuated by the extendable furniture part (6) when it is swiveled, for blocking the insertion of the extended pull-out rail (3) in the swivel position of the extendable furniture part (6) and for releasing the insertion of the extended pull-out rail (3) in the home position of the extendable furniture part, wherein the locking mechanism comprises a pivotably mounted locking lever (53). The locking lever (53) is pivotable about a pivot axis (52) aligned parallel to the extension direction (4).