Rotary Damper Torque Adjustment via Screwable Lid
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Solution Overview
Problem
The existing rotary damper design is cumbersome due to a large number of parts in its damping force adjustment mechanism, making it difficult to adjust damping torque generated by rotation efficiently.
Innovation Solution
A rotary damper design that adjusts damping torque by screwing a lid into a case, altering the gaps between the lid and vanes or partition members, thereby controlling the movement of viscous fluid and torque generated, without increasing the number of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a damping force adjustment mechanism with elastic members and bolts is used to adjust damping torque, then damping torque can be adjusted, but the number of parts increases and the structure becomes complex
Solution Approach 1:
The invention extracts the damping adjustment function from a complex multi-component mechanism and concentrates it into a single screwable lid. By removing the elastic members and multiple bolts, the patent achieves damping torque adjustment through a simple single-screw mechanism that modifies the gap between the lid and rotor, thereby controlling viscous fluid flow paths.
Solution Approach 2:
The lid serves multiple functions: it encloses the viscous fluid within the cylindrical chamber, provides the adjustment mechanism for damping torque through screwing/unthreading, and directly controls the gap distance that regulates fluid flow. This multi-functionality eliminates the need for separate adjustment components.
2Adaptability or versatility
If multiple bolts are used to push the rotor uniformly, then damping torque can be adjusted, but the adjustment work becomes troublesome
Solution Approach 1:
The invention extracts the adjustment function from multiple bolts and consolidates it into a single screwable lid. This eliminates the need for coordinated adjustment of multiple fasteners, reducing the operation to a simple single-screw mechanism that uniformly adjusts the gap between the lid and rotor.
3Adaptability or versatility
If a complex damping force adjustment mechanism is used, then damping torque can be adjusted, but the construction becomes cumbersome
Solution Approach 1:
The invention merges the enclosure function and the adjustment function into a single lid component. By combining these functions and eliminating separate adjustment mechanisms (elastic members, multiple bolts), the patent achieves a simple construction where the lid itself serves as both the enclosure and the adjustment mechanism through screwing/unthreading operations.
Solution Approach 2:
The lid performs multiple functions: enclosing the viscous fluid, providing structural support, and serving as the adjustment mechanism for damping torque. This multi-functionality reduces the overall number of components and simplifies the construction while maintaining full adjustment capability.
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 simple adjustment of damping torque by modifying the fluid movement through controlled gaps, reducing complexity and part count while maintaining effective torque regulation.
Implementation Method 1
a rotary damper that generates damping torque against applied rotational force by limiting movement of viscous fluid
Implementation Method 2
The seal member has a check valve of elastic body, which opens and closes the flow path formed in the vane
Data Source
AI summary
[Problem] To provide a rotary damper wherein damping torque generated by rotation can be easily adjusted using a simple configuration. [Solution] A rotary damper 1 limits the movement of viscous fluid contained in a circular cylinder chamber 111, thereby generating damping torque against applied rotational force. This rotary damper 1 is configured such that: a lid 15 is screwed into a case 11; and the gap g1 between the lower surface 153 of the lid 15 and the upper surface 119 of a partition section 115 and the gap g2 between the lower surface 153 of the lid 15 and the upper surface 129 of a vane 122 can be adjusted by adjusting the amount of screwing of the lid 15 into the case 11. This means that adjusting the amount of movement of viscous fluid through the gaps g1, g2 can adjust damping torque generated by rotation.