Shock Absorber Baffle Plate Interference Fitting Assembly
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Solution Overview
Problem
Existing damping force-control hydraulic shock absorbers face challenges in productivity due to complex assembly processes and high production costs associated with baffle plates produced by cure adhesion of rubber partition members to metal plates.
Innovation Solution
A shock absorber design featuring a baffle plate made of flexible resin or rubber, integrated with a fitting hole and a raised portion, which is fitted to a connecting pipe with interference, eliminating the need for additional fixing members and enhancing assembly performance by reducing rigidity and preventing aeration and cavitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a baffle plate is produced by cure adhesion of a rubber partition member to a metal plate, then the baffle plate has sufficient strength and durability, but the assembly process becomes complex and productivity decreases
Solution Approach 1:
The patent combines the partition member and baffle plate into a single integrated component made of flexible resin. This merging eliminates the need for separate rubber partition members and metal plates, removing the complex cure adhesion process while maintaining structural integrity and functionality.
Solution Approach 2:
The patent uses flexible resin as a composite material that integrates the functions of both the rubber partition member and metal baffle plate. This single material provides both the flexibility needed for sealing and the structural strength required for baffle plate functionality, eliminating multi-material assembly complexities.
2Reliability
If a baffle plate is produced by cure adhesion of a rubber partition member to a metal plate, then the baffle plate provides effective flow regulation, but production costs increase
Solution Approach 1:
The patent merges the flow regulation function and structural support function into a single flexible resin component. This eliminates the need for separate rubber and metal parts, reducing material costs and manufacturing complexity while maintaining effective hydraulic flow regulation.
Solution Approach 2:
The patent replaces expensive multi-material construction with a single, cost-effective flexible resin component. This simplifies manufacturing processes and reduces production costs while maintaining the necessary reliability for flow regulation in shock absorber applications.
3Productivity
If a flexible resin partition member is used without interference fitting, then the assembly process is simplified, but the partition member may detach or fail to regulate flow effectively
Solution Approach 1:
The patent employs an interference fitting design where the baffle plate's outer peripheral surface directly engages with the connecting pipe's inner peripheral surface. This self-retaining mechanism eliminates the need for additional fixing members or complex assembly processes, achieving both high productivity and reliable retention simultaneously.
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 design improves productivity and reduces production costs by simplifying the assembly process, ensuring a stable damping force through effective regulation of hydraulic liquid flow and prevention of vortex creation, while maintaining durability and strength.
Implementation Method 1
The partition member is made of flexible resin or rubber
Implementation Method 2
The partition member is provided with a fitting hole and fitted to the connecting pipe with interference with the connecting pipe inserted through the fitting hole
Implementation Method 3
prevention of aeration and cavitation
Implementation Method 4
prevention of vortex creation
Data Source
AI summary
A shock absorber includes a reservoir between a cylinder and an outer tube, in which hydraulic liquid and gas are sealed; a middle tube between the cylinder and the outer tube; a connecting pipe in the lateral wall of the middle tube, which includes a tip end extending toward the outside of the outer tube; an opening in the outer tube, allowing hydraulic liquid to flow from the outside of the outer tube into the reservoir through the outer side of the connecting pipe; and a partition member in the reservoir, which includes a partition wall that configured to regulate hydraulic liquid's upward flow from the opening in the reservoir. The partition member is made of flexible resin or rubber, provided with a fitting hole, and fitted to the connecting pipe with interference with the connecting pipe inserted through the hole.