Pivot Fitting with Damping Unit for Accurate Detent Position Control
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Solution Overview
Problem
Existing swivel fittings for movable furniture parts do not effectively indicate the maximum possible detent position, often leading to overrunning and incorrect adjustment.
Innovation Solution
A swivel fitting with a damping unit that increases the required adjustment force beyond a predetermined angle, making it easier to find and reach the last locking position by counteracting the rotational movement of the levers, thus preventing overrunning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional swivel fitting is used without damping, then the adjustment mechanism is simple and easy to operate, but the user cannot easily identify the maximum detent position and often overruns the switching position
Solution Approach 1:
A damping unit is introduced as an intermediary component between the user's adjustment force and the lever system. This damping unit provides tactile feedback through increased resistance, serving as a mediator that communicates the approach to the switching position to the user, thereby improving position identification accuracy without fundamentally altering the core swivel fitting structure
Solution Approach 2:
The damping unit dynamically changes the mechanical parameter of adjustment force required during the pivoting motion. By increasing the required adjustment force in the approach phase before the switching position, the system creates a detectable parameter change that signals the user of the impending detent position, thus improving measurement precision
2Reliability
If the damping unit increases the required adjustment force from a predetermined adjustment angle, then the user can easily identify the locking position, but the adjustment mechanism becomes more complex
Solution Approach 1:
The damping unit is designed to be self-regulating, automatically providing the appropriate increase in adjustment force without requiring external control systems or complex mechanisms. The damping elements inherently provide the necessary resistance based on their mechanical properties, making the system self-sufficient in achieving reliable locking position identification
Solution Approach 2:
The damping unit provides beforehand cushioning by increasing resistance in advance of the switching position. This prior cushioning effect allows the user to feel the approaching detent position and adjust accordingly, preventing overrun and ensuring accurate locking position achievement
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 damping unit ensures the user can easily identify and achieve the predetermined locking position, preventing overrunning and ensuring accurate adjustment of furniture parts.
Implementation Method 1
A damping unit is arranged on the first lever of the pivoting fitting, which is used to dampen the pivoting movement of the second lever relative to the first lever in the adjustment direction from a predetermined adjustment angle
Data Source
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AI summary
A pivot fitting (1), more particularly for moveable furniture parts on pieces of furniture, has a first lever (2) and a second lever (3) which are mounted so as to pivot relative to each other about a common pivot axis (D) from a basic position through a predetermined angle (α) in an adjusting direction (V) and a resetting direction (R); a latching mechanism (4), with which the two levers (2, 3) can be latched at different angular positions within the predetermined angle (α) relative to each other counter to a force acting in the resetting direction (R), said levers being pivotable in the resetting direction (R) when the latching mechanism (4) is deactivated, wherein a force-transmission shaft (41) of the adjusting mechanism (4) is coupled to the second level (3) in a rotationally fixed manner, wherein the latching mechanism (4) can be deactivated by pivoting the second lever (2, 3) relative to the first lever (2) in the adjusting direction (V) when an end position has been reached, wherein a damping structural unit (5) is arranged on the first lever (2) to damp the pivot movement of the second lever (2, 3) relative to the first lever (2) in the adjusting direction (V) from a predetermined adjusting angle (β). The invention further describes a piece of furniture.