Furniture Door Guide With Cable And Toothed Rack Mechanism
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Solution Overview
Problem
Existing devices for guiding and supporting furniture doors with downward flap openings often result in violent impacts or incomplete closures due to manual operation errors, leading to wear, damage, and security issues, and previous solutions like dampened hinge mechanisms or cable systems are complex and unreliable.
Innovation Solution
A device comprising a container body fixed to the furniture frame with a cable wound around a toothed pulley and toothed rack, assisted by a spring for smooth opening and closing, featuring a compact design with a toothed pulley and half-racks for gentle door movement regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cable system with toothed pulley and rack is used to guide door movement, then the door movement can be controlled smoothly, but the device becomes complex and unreliable
Solution Approach 1:
The device is divided into two separate half-components (first half-component and second half-component) that can be independently manufactured and assembled. Each half-component contains its own toothed pulley and rack mechanism, allowing for simplified production and easier assembly while maintaining the overall functional integrity of the door guidance system.
Solution Approach 2:
A cable acts as an intermediary element connecting the two half-components and transmitting the mechanical force required to control door movement. The cable winds around the toothed pulleys and engages with the racks, serving as a flexible mediator that transmits force while allowing for smooth, controlled door opening and closing motions.
2Object-affected harmful factors
If dampened hinge mechanisms or gas springs are used to ease door movement, then violent impacts are reduced, but the construction becomes more complex and bulky
Solution Approach 1:
The invention replaces traditional dampened hinge mechanisms and gas springs with a cable-based mechanical system featuring toothed pulleys and racks. This substitution eliminates the need for complex damping components while achieving controlled door movement through the engagement of the cable with the toothed elements, providing a simpler and more compact solution.
3Device complexity
If manual operation of the door is performed without assistance, then the structure remains simple, but incomplete closure and wear occur
Solution Approach 1:
The door guidance system operates autonomously through the interaction between the cable, toothed pulleys, and racks. As the door moves, the cable automatically winds or unwinds around the pulleys, engaging with the racks to provide continuous guidance and support. This self-service mechanism ensures complete closure without requiring additional active control or complex assistance systems.
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 reliable, simpler, and more compact mechanism for guiding furniture doors, ensuring smooth operation and reducing wear and security risks by using a spring-assisted cable system with a toothed pulley and rack mechanism for controlled door movement.
Implementation Method 1
said rack is provided on a slide movable in translation in contrast to or assisted by a spring to cause the unwinding or winding of the cable
Data Source
Figure 1
Figure 1a
Figure 2
AI summary
Device (1) for guiding and supporting a furniture door (16) with downward flap opening, comprising a container body (10) that can be fixed on the inner face of a shoulder (12) of a furniture frame (14) and a fastening element (13) constrained to the inner face of the door (16), operatively connected to the container body (10) by means of a cable (11) wound around a toothed pulley (60) meshing with a toothed rack profile (32), wherein said toothed pulley (60) has a fixed axis and said rack (32) is provided on a slide (30) movable in translation in contrast to or assisted by a spring (40) to cause the unwinding or winding of the cable (11), during the opening and closing phase of the door, respectively.