Pull-Out Guide Depth Adjustment With Accessible Stop Wheel
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Solution Overview
Problem
Existing pull-out guides for furniture face challenges such as complex adjustment mechanisms, difficult access to adjustment components, and increased space requirements, which hinder uniform design and accessibility in furniture with installed pull-out guides.
Innovation Solution
The pull-out guide features a depth adjustment wheel with an axis of rotation parallel to the longitudinal axis, allowing easy actuation, and a drive device mounted on the carcass rail, ensuring it remains accessible and does not move with the furniture part, along with a detachable stop element and a retraction or ejection device for smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ejection device is fixed to the furniture carcass, then the adjustment mechanism is stable, but the adjustment components become difficult to reach and the furniture fitting becomes wider
Solution Approach 1:
The ejection device is divided into two separate parts: the drive device remains fixed to the furniture carcass while the stop element is attached to the movable drawer rail. This segmentation allows the adjustment components to be accessible while maintaining system stability.
Solution Approach 2:
The stop element acts as an intermediary between the fixed drive device and the movable drawer rail. It transmits the adjustment force from the drive device to the drawer rail, enabling stable adjustment while keeping components accessible.
2Ease of operation
If the ejection device is fixed to the movable furniture part, then adjustment components are easily accessible, but the device takes up more space on the drawer
Solution Approach 1:
The main body of the ejection device (drive device) is extracted from the movable furniture part and fixed to the furniture carcass instead. Only the essential stop element remains on the drawer rail, minimizing space occupation while maintaining accessibility.
3Device complexity
If the axis of rotation of the depth adjustment wheel is oriented transverse to the longitudinal axis, then the adjustment mechanism is compact, but the wheel is difficult to actuate
Solution Approach 1:
Instead of orienting the axis of rotation transverse to the longitudinal axis (conventional design), the depth adjustment wheel is designed with its axis of rotation oriented parallel to the longitudinal axis of the drawer rail. This inversion makes the wheel much easier to actuate while maintaining a compact overall design.
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 design simplifies depth adjustment, enhances accessibility, reduces space usage, and allows for precise control of the furniture's position, ensuring a uniform appearance and easy operation of the pull-out guides.
Implementation Method 1
a depth adjustment wheel (73) which is mounted on the carrier (71) so as to be rotatable about an axis of rotation (D), for moving the stop element (72) along the longitudinal axis (L)
Data Source
AI summary
A pull-out guide includes a carcass rail, a drawer rail movable along a longitudinal axis in an opening and closing direction of a movable furniture part, a drive apparatus for moving the drawer rail and the movable furniture part between a closed position and an open position, and a depth adjustment device for adjusting the closed position of the drawer rail relative to the carcass rail. The depth adjustment device has a carrier, a stop element movable relative to the carrier, and a depth adjustment wheel mounted rotatably about a rotation axis on the carrier for moving the stop element along the longitudinal axis. The rotation axis of the depth adjustment wheel is parallel to the longitudinal axis, and the stop element contacts a stop-counterpart piece of the drive apparatus in the closed position and is releasable by the stop-counterpart piece.