Variable-Length Furniture Hinge for Wide Door Opening
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Solution Overview
Problem
Conventional furniture hinges cause damage and noise due to friction and contact between the furniture door and wall when opened, as the door's corner strikes the wall, limiting the opening angle and reducing the service life of the furniture.
Innovation Solution
A furniture hinge design that adjusts its length based on the door's opening and closing amount, using a movement part with a guide shaft, hinge part, and adjustment mechanism to prevent contact between the door and wall, incorporating upper and lower rotation plates and a link member to convert rotational motion into linear motion, allowing increased opening angle and reducing friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the furniture door is opened to a large angle using a conventional hinge, then the opening angle is increased, but the door corner contacts the wall causing damage and noise
Solution Approach 1:
The hinge system transitions from a static fixed-length structure to a dynamic adjustable-length structure. The movement part can reciprocate along the guide shaft to change the effective hinge length, allowing the system to adapt its geometry during door opening to prevent wall contact while maintaining large opening angles
Solution Approach 2:
The movement part acts as an intermediary element between the body part and the hinge part. It converts the rotational motion of the door into linear reciprocating motion along the guide shaft, thereby adjusting the hinge length dynamically to prevent direct contact between the door corner and the wall
2Device complexity
If a fixed-length hinge is used, then the structure is simple, but the door contacts the wall at full opening causing friction and damage
Solution Approach 1:
The hinge incorporates a dynamic length adjustment mechanism where the movement part can change its position along the guide shaft. This transforms the hinge from a rigid fixed-length structure to a flexible variable-length structure that automatically adjusts to prevent wall contact, thereby extending service life without excessive complexity
Solution Approach 2:
The guide shaft and movement part mechanism are pre-configured to automatically adjust the hinge length before the door corner would contact the wall. This preliminary geometric adjustment prevents the harmful contact from occurring in the first place, rather than reacting to damage after it occurs
3Ease of operation
If the hinge length is increased to prevent wall contact, then door opening is improved, but the hinge structure becomes more complex
Solution Approach 1:
Rather than using a permanently extended hinge structure, the invention employs a dynamic adjustment mechanism where the movement part reciprocates along the guide shaft. This allows the hinge to extend only when needed during door opening, maintaining simplicity when the door is closed or partially open while providing extended range when fully opened
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
Prevents damage and noise by ensuring the door and wall do not contact, extends the service life of the furniture, and allows for a greater opening angle, enhancing the quality and satisfaction of the furniture.
Implementation Method 1
a link member hinge-coupled respectively to the rotation member and the guide shaft so as to convert the rotational motion of the rotation member into a linear motion
Implementation Method 2
an upper rotation plate 142 hinge-coupled to the body part 110 and the door fixing part 120 so as to provide elastic force
Data Source
AI summary
A furniture hinge mounted between a furniture wall and a furniture door so as to be used as an opening and closing mechanism of the furniture door, in which, by using the movement part provided on the body part of the furniture hinge and the adjustment part provided at the movement path of the movement part, the entire length of the furniture hinge is changed by advancing and returning the movement part in the opening and closing process of the furniture door such that, since the furniture wall and the furniture door do not come into contact with each other even though the furniture door is completely opened, the peeling damage to the exterior of the furniture is prevented and contact noise is eliminated, thereby improving the satisfaction of consumers.