Shock Absorber Spool Guide Passage Merging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional damping force controlling shock absorbers have complex structures that lead to manufacturing difficulties and increased costs due to individually formed hard and soft passages, resulting in dispersion during mass production.
Innovation Solution
A damping force controlling shock absorber design where a pilot passage and a bypass passage are shared between a cut-out portion of a pilot disk and a branch groove of a spool guide, simplifying the passage structure and allowing for easier adjustment, improved productivity, and enhanced durability through a simplified assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hard passage and soft passage are individually formed in the spool guide, then damping force control is achieved, but the structure becomes complicated and manufacturing complexity increases
Solution Approach 1:
The patent merges the hard passage and soft passage into a single integrated passage structure within the spool guide. The spool guide contains both hard damping passages and soft damping passages that are formed together as one component, eliminating the need for separate passage structures. This merging reduces structural complexity while maintaining the ability to provide both hard and soft damping forces through the integrated design of the spool guide passages.
2Adaptability or versatility
If individually formed passages are used, then damping force adjustment is possible, but manufacturing precision decreases and dispersion occurs during mass production
Solution Approach 1:
By combining the formation of hard and soft passages into a single integrated spool guide component, the patent ensures that both passages are manufactured simultaneously using the same machining processes. This eliminates variations that would occur from separate manufacturing steps, improving consistency and reducing dispersion during mass production while still allowing for adjustable damping force characteristics through the integrated passage design.
3Adaptability or versatility
If complex passage structure is used, then damping force control is achieved, but assembling difficulty increases and manufacturing costs rise
Solution Approach 1:
The patent integrates the hard passage and soft passage into a single spool guide component, reducing the number of parts that need to be assembled. The spool guide is designed as one piece containing all necessary passages, which simplifies the assembly process by eliminating the need to assemble multiple separate passage components. This merging maintains full damping force control functionality while significantly improving ease of manufacture and reducing assembly difficulty.
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
This design simplifies the passage structure, reduces manufacturing complexities, improves product dispersion, and maintains stable high-speed damping forces in soft modes while increasing the durability and assemblability of the shock absorber.
Implementation Method 1
a solenoid (30) installed in the piston rod to move a spool (31)
Implementation Method 2
improves ride comfort by absorbing and damping a vibration or shock transferred from a road surface
Data Source
AI summary
In a damping force controlling shock absorber, a pilot passage and a bypass passage are shared between a cut-out portion formed in a hollow of a pilot disk and a branch groove of a spool guide, thus simplifying a passage structure, simplifying a passage adjustment structure of a spool, and improving productivity and dispersion of products.