Shock Absorber Damper Venting Passage for Stable Damping
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Solution Overview
Problem
Existing damper mechanisms in shock absorbers are inefficient in venting internal gas, leading to unstable operation and degraded performance due to gas accumulation and sudden pressure changes.
Innovation Solution
A damper mechanism design featuring a first, second, and third passage forming an exhaust passage that aligns with the natural flow direction of gas, facilitating its discharge from the accommodating chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional damper mechanism is used without a dedicated exhaust passage, then the structure is simpler, but gas accumulation occurs leading to unstable operation and degraded performance
Solution Approach 1:
The exhaust passage is segmented into three separate components: a first passage in the housing, a second passage in the coil holder, and a third passage in the first sleeve. These segmented passages work together to form a complete exhaust pathway, allowing gas to be vented effectively while distributing the structural complexity across multiple components rather than requiring a single complex passage.
Solution Approach 2:
The coil holder containing the second passage is positioned within the first sleeve, and the housing containing the first passage surrounds the coil holder assembly. This nested arrangement allows the exhaust passages to be integrated into the existing damper structure without requiring additional external components, thus improving reliability while minimizing overall structural complexity.
2Reliability
If gas venting is not prioritized in the damper mechanism design, then the structure is simpler, but gas accumulation causes sudden pressure changes and degraded performance
Solution Approach 1:
The exhaust passage is designed to proactively vent gas before it can accumulate to problematic levels. The first passage in the housing provides a direct pathway for gas to exit the accommodating chamber, preventing pressure buildup that would otherwise lead to sudden changes and performance degradation. This preliminary action maintains consistent performance without requiring complex active control systems.
Solution Approach 2:
The coil holder with its second passage acts as an intermediary component that facilitates gas flow between the accommodating chamber and the external environment. By providing this intermediate pathway, the system can manage gas accumulation gradually rather than requiring direct, complex pressure relief mechanisms, thus maintaining performance consistency with moderate structural complexity.
3Productivity
If an exhaust passage is added to the damper mechanism, then gas exhaust efficiency improves, but the device complexity increases
Solution Approach 1:
The exhaust passage system merges multiple functional components into a unified gas venting pathway. The first passage in the housing, second passage in the coil holder, and third passage in the first sleeve are combined to create an efficient exhaust system that leverages the existing structural elements of the damper mechanism, achieving high gas exhaust efficiency without proportionally increasing overall device complexity.
Solution Approach 2:
The housing serves multiple functions: it provides structural support, contains the first passage for gas exhaust, and houses the coil holder assembly. The coil holder similarly serves as both an electromagnetic component mount and a gas passage component. This multi-functionality allows the exhaust system to achieve high productivity while minimizing additional structural complexity.
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
Enhances the operational performance of the damper mechanism by improving gas exhaust efficiency and minimizing the risk of pressure drops, thereby maintaining consistent damping force.
Implementation Method 1
an electromagnetic coil, wherein the electromagnetic coil is located between an outer sidewall of the housing and an inner sidewall of the first sleeve and configured to drive the valve armature to reciprocate along the first direction within the accommodating chamber
Implementation Method 2
the housing is provided with a first passage in communication with the accommodating chamber, the coil holder is provided with a second passage in communication with the first passage, the first sleeve is provided with a third passage in communication with the second passage, and the first passage, the second passage, and the third passage are sequentially connected to form an exhaust passage
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Provided are a damper mechanism and a shock absorber using the damper mechanism. The damper mechanism (01) comprises a first sleeve (100), a second sleeve (200), a coil fixing base (103), and a solenoid valve control portion (104); the coil fixing base and the solenoid valve control portion are located in the first sleeve; the solenoid valve control portion comprises a housing (1041), a valve cover (1042), and a valve armature (1044); the housing and the valve cover define an accommodating cavity (1043); the housing is provided with a first channel (301) communicated with the accommodating cavity; the coil fixing base is provided with a second channel (302) communicated with the first channel; the first sleeve is provided with a third channel (303) communicated with the second channel; and the first channel, the second channel, and the third channel are sequentially communicated to form an exhaust channel (30). The damper mechanism facilitates discharge of gas from the accommodating cavity, so that the damper mechanism has good performance.