Guide Carriage Connecting Part Tilt-Proof Locking Mechanism
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Solution Overview
Problem
Existing guide carriages for movable furniture parts on guide rails face issues such as loose locking screws leading to unstable door positions, difficult installation of heavy door leaves, and undefined movement causing mechanical stress.
Innovation Solution
A guide carriage design with a chassis and connecting part as separate structural units, connected via a fastening device with an energy accumulator and locking element, and a separate holding device for tilt-proof suspension and locking of the connecting part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a locking screw is used to clamp the base plate in position, then the door leaf can be mounted on the guide carriage, but the locking screw may accidentally come loose leading to unstable door position
Solution Approach 1:
The locking lever automatically engages with the guide surface when the connecting part is inserted into the chassis, and is pushed into the locked position by the spring during normal operation. The system locks itself without requiring manual intervention or separate locking screws that could loosen.
Solution Approach 2:
The patent replaces the threaded screw connection with a spring-loaded lever mechanism that uses elastic deformation and mechanical engagement surfaces. This substitution eliminates the need for threads that can strip or loosen, providing more reliable locking.
2Reliability
If the head part is inserted precisely into the locking device for locking, then the door leaf can be secured, but the installation becomes considerably more difficult especially with heavy door leaves
Solution Approach 1:
Instead of requiring the installer to precisely insert the head part into the locking device, the locking lever automatically engages the guide surface when the connecting part is inserted. The spring force pushes the lever into the locked position, inverting the traditional approach where the locking mechanism must be manually engaged.
Solution Approach 2:
The locking mechanism performs the locking action automatically during the insertion process itself. The spring-loaded lever engages the guide surface and locks the connecting part to the chassis without requiring separate precise alignment or manual manipulation of locking components.
3Adaptability or versatility
If the door leaf is connected to the guide carriage, then the door can move along the guide rail, but the door leaf can be lifted relatively far from the furniture body causing undefined movement and mechanical stress
Solution Approach 1:
The holding device with holding element and engagement surface prevents tilting movement before it can cause problems. The connecting part is designed to engage the holding element in a way that restricts rotational movement about horizontal axes, counteracting the gravitational force that would cause the door leaf to tilt forward.
Solution Approach 2:
The patent introduces localized constraints at specific points: the holding element provides a localized engagement point that prevents tilting, while the locking lever provides localized engagement that prevents lateral displacement. These localized constraints maintain overall system stability without restricting the desired longitudinal movement along the guide rail.
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
The solution provides a secure, easy-to-install, and tilt-proof connection between the chassis and connecting part, preventing mechanical stress and undefined movement, while ensuring the door leaf remains stable and securely locked.
Implementation Method 1
the fastening device has at least one energy accumulator and at least one locking element that can be acted upon by the energy accumulator
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3
AI summary
Guide carriage (5a, 5b) for the movable mounting of a furniture part (3a, 3b, 4a, 4b) on at least one guide rail (7), wherein the guide carriage (5a, 5b) has a chassis (11) with at least one rotatably mounted roller (17a, 17b) and at least one connecting part (13) for connecting the guide carriage (5a, 5b) to the furniture part (3a, 3b, 4a, 4b), wherein the chassis (11) and the connecting part (13) are designed as separate units and can be connected to each other via at least one fastening device (18), wherein the fastening device (18) has at least one energy storage device (21) and at least one locking element (19) actuated by the energy storage device (21), wherein the chassis (11) and the connecting part (13) can be releasably locked to each other by a force of the energy storage device (21). are,wherein a holding device (24) separate from the fastening device (18) is provided for fastening the connecting part (13) to the chassis (11), wherein the connecting part (13) can be hooked onto the chassis (11) via the holding device (24), can be pivoted about an axis (16), preferably horizontal, in the hooked state and can be locked to the chassis (11) via the at least one locking element (19).