Pull-Out Guide Release Latch for One-Person Rail Removal
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Solution Overview
Problem
Existing pull-out guides for furniture parts require complex and difficult manual operations for installation and removal, particularly requiring simultaneous release of securing parts against spring forces, which is cumbersome for one person and prone to misalignment issues.
Innovation Solution
A pull-out guide with a spring element that rotates the securing part from a locking to a release position, and a holding device that automatically secures the release position, allowing for simple insertion and removal of the rail without additional user actuation, utilizing a snap connection mechanism for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring element biases the securing part into the locked position, then the locking function is reliable, but the operation complexity increases when simultaneous release is required
Solution Approach 1:
The holding device automatically engages when the securing part rotates from locked to release position, without requiring manual intervention. The system serves itself by using the rotation motion to trigger the holding mechanism, eliminating the need for coordinated manual operation of multiple locking elements
Solution Approach 2:
The holding device is pre-configured to automatically engage when the securing part rotates into the release position. This preliminary arrangement ensures that as soon as the securing part rotates, the holding device is ready to maintain the release position, preparing the system in advance for easy removal or installation
2Ease of operation
If the locking element is held by friction without spring bias, then the operation is simpler, but the positioning precision deteriorates
Solution Approach 1:
The holding device acts as an intermediary mechanism that bridges the friction-held locking element and the required precise positioning. It provides a positive mechanical engagement (snap connection) that ensures accurate positioning without relying solely on friction, thereby maintaining both simplicity and precision
3Reliability
If manual rotation against spring force is required, then the locking is secure, but the productivity decreases due to difficult operation
Solution Approach 1:
The holding device automatically engages when the securing part rotates, eliminating the need for manual effort to maintain the release position. This self-actuating mechanism maintains secure locking during operation while dramatically improving installation and removal efficiency
Solution Approach 2:
The locking mechanism is segmented into independent functional elements: the spring-biased securing part for reliable locking, and the holding device for maintaining release position. This segmentation allows each element to perform its function optimally without interfering with the other, improving overall productivity
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
Facilitates easy and reliable operation of pull-out guides, enabling single-person installation and removal by automatically maintaining the release position, reducing misalignment issues and enhancing operational simplicity.
Implementation Method 1
a spring element (16) against the force of which the securing part (14) can be rotated from the locked position into the release position
Data Source
Figure 1~3
Figure 4~9
Figure 10~16
AI summary
The invention relates to a pull-out guide for pulling out an extractable furniture part (5) from a furniture carcass (4), the pull-out guide comprising a first rail (1) and a second rail (2), wherein the pulling of the first rail (1) out of the second rail (2) is limited by a stop element (13) of the first rail (1) striking a pull-out stop (12) of the second rail (2). A securing part (14) is mounted on the second rail (2) so as to be rotatable about an axis of rotation (15), which securing part can be rotated, counter to the force of a spring element (16), from a blocked position, in which lifting of the front end of the first rail (1) is blocked, in a rotational opening direction into a release position, in which the front end of the first rail (1) can be lifted and the stop element (13) of the first rail (1) can be moved over the pull-out stop (12) of the second rail (2). A holding device is provided which, in a holding state, holds the securing part (14), rotated into the release position, in the release position.