Hydraulic damper
WO2026061664A1PCT designated stage Publication Date: 2026-03-26SUSPA
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Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-03-26
AI Technical Summary
Technical Problem
Existing hydraulic dampers for commercial vehicles require multiple variants to cater to varying damping characteristics, leading to increased manufacturing and logistics costs without adequately addressing user comfort needs across different driving conditions.
Method used
A hydraulic damper with dual damping mechanisms: a manually adjustable mechanism for selecting between soft and hard damping, and an automatic mechanism that adjusts based on piston speed, enhancing damping characteristics and user comfort.
Benefits of technology
Reduces the need for multiple damper variants, lowering manufacturing and logistics costs while improving user comfort by providing adaptable damping suitable for diverse driving conditions.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure EP2025071626_26032026_PF_FP_ABST
Abstract
The present invention relates to a hydraulic damper (1), comprising: a housing (2), which encloses a working chamber (5, 6) filled with hydraulic fluid; a piston (4), which divides the working chamber into a first partial working chamber (5) and a second partial working chamber (6) and is movable along a central axis of the working chamber; and a piston rod (3), which is connected to the piston (4) and protrudes out of the housing (2). In order to provide a hydraulic damper with extended functionality and therefore improved damping characteristics, the hydraulic damper (1) comprises a first and a second damping mechanism, each designed to damp a movement of the piston (4) along the central axis due to a force acting on the piston rod (3) in the direction of the central axis by adjusting a flow of hydraulic fluid between the first partial working chamber (5) and the second partial working chamber (6), wherein the first damping mechanism is designed to damp the movement of the piston (4) depending on an adjustment state of a first adjustment element (31), which can be actuated from the outside, the first adjustment element (31) being adjustable at least between a first and a second adjustment state, and the second damping mechanism is designed to damp the movement of the piston (4) depending on the speed of the piston (4).
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