Furniture Hinge Eccentric Bolt Adjustment for Precise Door Positioning
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Solution Overview
Problem
Conventional furniture hinges require significant manual effort and lack precision in adjusting the position of furniture doors due to the difficulty in loosening and tightening the fixing bolt, often necessitating two persons and leading to positional displacement.
Innovation Solution
A furniture door position adjustment device featuring a body with a recessed slit, an elastic piece with an elliptical hole, and an eccentric bolt with a leg that rotates within the slit, allowing for precise one-touch adjustments and preventing displacement through the engagement of the elliptical hole and rotator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional fixing bolt is used to adjust the furniture door position, then the door can be positioned, but significant manual effort is required and two persons are needed to loosen and tighten the bolt
Solution Approach 1:
The patent employs an eccentric bolt with a circular cross-section that rotates within a recessed slit, utilizing rotational motion to convert small manual inputs into larger positional adjustments. The circular geometry allows for smooth rotation and mechanical advantage, enabling one-person operation without excessive force requirements.
Solution Approach 2:
The recessed slit acts as an intermediary mechanism between the eccentric bolt and the door body. As the eccentric bolt rotates, it pushes against the recessed slit walls, which in turn push the door body to the desired position. This intermediary structure amplifies the small rotational movement into effective positional adjustment.
2Manufacturing precision
If the fixing bolt is loosened and tightened manually, then the door position can be set, but accurate positioning is difficult and precision is degraded
Solution Approach 1:
The door body is pre-formed with a recessed slit that guides the eccentric bolt's movement path. This preliminary structural preparation ensures that as the eccentric bolt rotates, the door body moves along a predetermined trajectory, achieving accurate positioning without requiring manual precision in the adjustment process.
Solution Approach 2:
The interaction between the eccentric bolt and the recessed slit provides natural feedback during adjustment. As the bolt rotates, the operator can feel the resistance changes and positional feedback through the mechanism, allowing for intuitive and precise positioning without requiring technical skill or measurement tools.
3Reliability
If the body is shifted relative to the fixing bolt, then position adjustment is possible, but the door may experience positional displacement due to weight and lack of control
Solution Approach 1:
The eccentric bolt's circular cross-section and rotational movement provide smooth, controlled adjustment without sudden jumps or displacements. The rotational geometry ensures continuous, predictable motion that maintains door stability throughout the adjustment process and prevents unwanted positional shifts.
Solution Approach 2:
The recessed slit serves as a controlled intermediary that mediates between the eccentric bolt's rotational force and the door body's position. This structure ensures that force is applied in a controlled manner, preventing uncontrolled displacement while maintaining simple overall mechanism design.
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
Enables fine adjustments and secure positioning of furniture doors with minimal manual effort, preventing displacement even under excessive pressure, thus enhancing the reliability and precision of the adjustment process.
Implementation Method 1
an elastic piece (10) formed at a side of the intermediate plate (140) so as to perform a buffering function in a vertical direction
Implementation Method 2
an eccentric bolt (40) having a leg (42) formed on the underside thereof and configured to be coupled to the rotator (30) by means of the leg so as to rotate the rotator (30) in a forward or reverse direction upon the forward or reverse rotation of the eccentric bolt (40)
Data Source
AI summary
The present invention relates to a furniture hinge that is mounted between a furniture wall body and a furniture door so as to be used as an opening and closing means for the furniture door. The present invention includes: a long concave hole (50) that is formed in a main body portion (110); an elastic piece (10) that is formed in a middle plate (140) so as to perform a buffering function in the vertical direction; an oblong hole (20) that is formed in the elastic piece (10); a rotor (30) which is accommodated in the oblong hole (20) and which has a step protrusion (32) that is formed in one side portion on the outer circumference surface thereof; and an eccentric bolt (40) that rotates while being inserted into the long concave hole (50) and is coupled to the rotor (30) through a leg portion (42) for the regular/reverse rotation. The furniture hinge can be finely adjusted and the position of the door can be discerned with the naked eye.