Damper Throttle Structure for Speed-Adaptive Damping Control
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Solution Overview
Problem
Existing damper devices with cylinder and piston bodies require complex structures to manage damping forces effectively, leading to increased complexity and potential inefficiencies in damping object movement.
Innovation Solution
A damper device with a cylinder body partitioned into two chambers by a cap body, featuring a flow channel and a throttle structure that adjusts the gap between a shaft and a through-hole in response to pressure changes, allowing for adjustable damping forces based on movement speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex structure with multiple components is used to manage damping forces, then the damping control capability is improved, but the device complexity increases
Solution Approach 1:
The patent combines the cap body and piston body into a single integrated component, eliminating the need for separate components to manage damping forces. This merging reduces device complexity while maintaining the ability to control damping through the throttle structure formed by the integrated component's geometry
Solution Approach 2:
The throttle structure dynamically adjusts the gap between the shaft and through-hole based on pressure changes during piston movement. This dynamic adjustment provides adaptive damping control that responds to movement speed and load conditions, improving versatility without requiring additional complex control mechanisms
2Device complexity
If a fixed damping force structure is used, then the device complexity is reduced, but the adaptability to different movement speeds deteriorates
Solution Approach 1:
The throttle structure changes the effective opening area (gap between shaft and through-hole) based on pressure differential caused by piston movement speed. At higher speeds, the pressure differential increases, closing the gap and increasing damping force, while at lower speeds the gap remains larger providing lower damping. This parameter change provides speed-adaptive damping without complex mechanisms
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 simpler structure for damper devices that effectively adjusts damping forces in response to movement speed, ensuring proper damping of the damping object without excessive force, thus enhancing the device's operational efficiency.
Implementation Method 1
a hole edge portion of the through-hole of the cap body is deformed by a pressure change generated by the movement or the relative movement of the piston body
Implementation Method 2
a hole edge portion of the through-hole of the cap body is deformed by a pressure change
Implementation Method 3
the elastic portion 32 is deformed in the direction in which the inclination is relaxed by the pressure change
Data Source
Figure 1~3
Figure 4~6
AI summary
A cylinder body is partitioned by a partition into a first chamber that is divided from an outside by a cap body and a second chamber accommodating a piston body. A flow channel communicating the first chamber and the second chamber with each other is formed in the partition, and a shaft is projected from the partition onto the first chamber side. The cap body includes a through-hole, the shaft is inserted movably in the through-hole from a reference position along an axis line direction of the cylinder body. There is provided a throttle structure that changes a gap between the through-hole and the shaft when the cap body moves from the reference position by a pressure change generated by a movement or a relative movement of the piston body.