Furniture Hinge Cup Clamping With Integrated Spreading Jaws
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Solution Overview
Problem
Existing furniture hinges with separate clamping and spreading components are costly to manufacture and assemble, and have limited lifting movement, restricting the spreading of clamping jaws and thus the secure attachment to furniture parts.
Innovation Solution
A furniture hinge design where at least one clamping jaw has an integrally formed spreading extension, allowing for a single-component spreading element produced through injection molding, with a lifting arrangement using a cam mechanism to achieve a significant spreading movement, enhancing secure attachment and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate clamping jaws and spreading parts are used, then the furniture hinge can be assembled with modular components, but the manufacturing cost increases and assembly becomes more complex
Solution Approach 1:
The patent combines the clamping jaw and spreading part into a single integrally formed spreading element with clamping jaws (72.1, 72.2). This single component is produced in one work step by injection molding, eliminating the need for separate spreading parts and reducing assembly complexity while maintaining the modular benefit of the spreading element design.
2Adaptability or versatility
If separate clamping jaws and spreading parts are used, then component flexibility is improved, but manufacturing cost increases
Solution Approach 1:
The spreading element is produced as a single injection-molded component in one work step. The integrally formed design with clamping jaws eliminates the need for separate spreading parts, reducing manufacturing costs while maintaining design flexibility through the molded structure.
3Length of stationary object
If the bracket installation height is limited, then the furniture hinge fits within standard furniture dimensions, but the lifting movement of spreading parts is restricted
Solution Approach 1:
The patent employs a cam mechanism with an asymmetric cam disk that converts rotational movement into the lifting and spreading motion of the clamping jaws. The cam profile geometry enables sufficient lifting movement within a compact bracket installation height, overcoming the limitation of short actuation space.
4Length of moving object
If the lifting movement of spreading parts is small, then the bracket size is reduced, but the spreading of clamping jaws is insufficient
Solution Approach 1:
The cam mechanism with asymmetric cam disk profile amplifies the lifting movement to achieve sufficient spreading of the clamping jaws. The cam geometry transforms limited rotational input into the required linear lifting motion, ensuring adequate clamping force is generated despite compact dimensions.
Solution Approach 2:
The cam mechanism dynamically converts rotational motion into the lifting and spreading motion of clamping jaws. This dynamic transformation enables the system to achieve the required spreading movement and clamping force within a compact bracket installation height.
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 design enables rapid, secure, and cost-effective attachment of the furniture hinge to furniture parts with a larger spreading movement, reducing manufacturing costs and improving the clamping mechanism's effectiveness.
Implementation Method 1
the lifting arrangement comprises a cam for one or both clamping jaws, the shaft of the cam is rotatably mounted in a cam bearing embedded in the cup side wall
Implementation Method 2
a cam disk arranged in the periphery thereof, asymmetrically with respect to the shaft, engages in a side of the clamping jaws which faces the hinge cup
Implementation Method 3
The spreading element, consisting at least of the clamping jaws, of the formed spreading extensions and of the connecting flange, can thus be produced cost-effectively in one work step, for example, by injection molding
Implementation Method 4
the spreading extension tapers in the direction towards the cup bottom to a spreading extension edge. Due to the lifting movement, which is oriented substantially along the cup side walls, the spreading extension slides along the spreading surface past the transition from the cup bottom to the cup side wall and thereby presses the clamping jaw outward
Implementation Method 5
the spreading extension slides along the spreading surface past the transition from the cup bottom to the cup side wall and thereby presses the clamping jaw outward
Data Source
AI summary
The invention relates to a furniture hinge (10) with a hinge cup (52) having cup side walls (52.4) which encircle a cup opening at least partially, and having a cup bottom (52.1) which at least partially closes off the hinge cup (52) opposite the cup opening, with a spreading element (70) having two clamping jaws (72.1, 72.2) which at least partially radially enclose the cup side walls (52.4) of the hinge cup (52) and which are connected via a flange (71), and with a lifting arrangement for adjusting at least one of the clamp jaws (72.1, 72.2) between a first position and a second position. Here it is provided that at least one of the clamping jaws (72.1, 72.2) comprises at least one integrally formed spreading extension (76, 78) which, in the transition from the first position into the second position, cooperates with the hinge cup (52) so that the clamping jaws (72.1, 72.2) are spread. As a result, a furniture hinge is created, which can be produced cost-effectively, and which can be attached rapidly and securely to a piece of furniture.