Hydraulic Damper Valve Structure for Adjustable Damping Assembly
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Solution Overview
Problem
The complexity of manufacturing hydraulic dampers that can change damping force is increased by the need for a larger number of parts, complicating the manufacturing process.
Innovation Solution
A hydraulic damper design featuring a movable rod, a piston to partition liquid chambers, a channel forming part, a valve part to control liquid flow, and a damping force changer with a pressure changing part, support part, and inflow forming part using a crimped portion to adjust damping force by altering liquid pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a larger number of parts are used to enable damping force change, then the damping force adjustability is improved, but the manufacturing process complexity increases
Solution Approach 1:
The patent merges multiple functions into the piston valve component. The piston valve simultaneously serves as a partition wall between oil chambers, a flow control valve, and a mounting structure for the float valve. This integration reduces the total number of parts while maintaining the ability to change damping force through float valve operation.
Solution Approach 2:
The piston valve is designed as a multi-functional component that performs multiple roles: it partitions the hydraulic circuit into separate oil chambers, controls liquid flow through its valve body, provides mounting structure for the float valve, and enables damping force adjustment. This multi-functionality reduces part count and simplifies manufacturing while preserving adaptability.
2Adaptability or versatility
If a larger number of parts are used to enable damping force change, then the damping force adjustability is improved, but the manufacturing efficiency decreases
Solution Approach 1:
By combining multiple functions into the piston valve and reducing the total number of components, the assembly process is simplified. Fewer parts mean fewer assembly steps, reduced quality control checkpoints, and lower manufacturing costs, thereby improving manufacturing efficiency while maintaining damping force adjustability through the float valve mechanism.
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
Facilitates the manufacturing of hydraulic dampers capable of changing damping force, improving manufacturing efficiency and adaptability.
Implementation Method 1
a pressure changing part configured to change pressure of the liquid in the inflow part by being deformed or displaced
Implementation Method 2
a valve part configured to open and close the channel in the channel forming part and generate damping force
Data Source
AI summary
A hydraulic damper includes: a rod that is inserted into a cylinder containing liquid; a piston that is connected to the rod and partition the cylinder into a first liquid chamber and a second liquid chamber; a channel forming part having a channel between the first liquid chamber and the second liquid chamber; a valve part configured to open and close the channel and generate damping force; and a damping force changer including an inflow part into which the liquid flows and configured to change the damping force by using liquid pressure in the inflow part. The damping force changer includes: a pressure changing part that changes the liquid pressure in the inflow part by being deformed or displaced; a support part that supports the pressure changing part; and an inflow forming part that holds the support part and forms the inflow part jointly with the support part.