Rotary Damper with Threaded Engagement for Bidirectional Damping
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Solution Overview
Problem
Existing rotary dampers for toilet lids and seats often have complex structures and require additional components like springs to achieve bidirectional damping, which complicates their design and increases manufacturing costs.
Innovation Solution
A rotary damper with a threaded engagement between two damper elements, allowing for bidirectional axial displacement of the damping medium, eliminating the need for additional springs and simplifying the structure while maintaining robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional springs are used to achieve bidirectional damping, then the damping function is improved, but the device complexity increases
Solution Approach 1:
The patent combines the damping function for both rotation directions into a single threaded engagement mechanism between the first and second damping elements. The threaded connection allows the second damping element to be axially displaced in either direction relative to the first damping element, eliminating the need for separate springs for each direction and simplifying the overall structure.
Solution Approach 2:
The threaded engagement between the damping elements serves multiple functions simultaneously: it provides bidirectional axial displacement, maintains preloading force in both directions, and enables the damping medium to be compressed in either rotation direction. This multi-functional design replaces what would traditionally require multiple separate components.
2Reliability
If additional springs are used to achieve bidirectional damping, then the damping function is improved, but manufacturing costs increase
Solution Approach 1:
The patent combines the damping function for both rotation directions into a single threaded engagement mechanism between the first and second damping elements. The threaded connection allows the second damping element to be axially displaced in either direction relative to the first damping element, eliminating the need for separate springs for each direction and simplifying the overall structure.
Solution Approach 2:
The invention extracts and eliminates the unnecessary springs from the traditional bidirectional damping mechanism. By using the threaded engagement between damping elements alone, the design removes redundant components, reducing both manufacturing complexity and material costs while maintaining the essential bidirectional damping function.
3Reliability
If a robust structure is achieved with traditional designs, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent combines the damping function for both rotation directions into a single threaded engagement mechanism between the first and second damping elements. The threaded connection allows the second damping element to be axially displaced in either direction relative to the first damping element, eliminating the need for separate springs for each direction and simplifying the overall structure.
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 robust, structurally simple damper that effectively dampens both directions of rotation with a single threaded engagement, offering adjustable damping properties and reducing manufacturing complexity and costs.
Implementation Method 1
a viscous damping medium in the housing... viscosity-related flow resistance that generates the actual damping effect
Implementation Method 2
the second damper element is coupled to the first damper element by means of a threaded engagement and is received radially in the first damper element... a rotation of the first damping element relative to the housing leads to an axial displacement of the second damping element
Data Source
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AI summary
The invention relates to a rotary damper, in particular for toilet lids and seats, with two damper elements, one (8) of which is radially received within the other (13) and which are coupled by a threaded engagement.