Vibration Damper Line Block Layout for Compact Dual Damping Valves
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Solution Overview
Problem
Existing vibration dampers with two adjustable damping valve devices face installation space conflicts and complex fluidic connections, requiring significant axial and radial space, which complicates their design and production.
Innovation Solution
A line block connected to the cylinder forms fluidic connections to damping valve devices for both working chambers, with separate radial channels and a reducing piece, allowing the damping valve devices to be positioned closer together, optimizing installation space and simplifying production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two intermediate tubes are used to connect working chambers to damping valve devices, then fluidic connections are established, but the radial distance between damping valve devices increases due to the outer diameter of the cylinder tube and radial width of annular fluidic connection
Solution Approach 1:
The patent merges the fluidic connection functions into a single line block structure that integrates multiple radial channels. Instead of using separate intermediate tubes for each working chamber, the line block combines both fluidic connections with shared radial channels, eliminating the need for dual intermediate tubes and reducing the radial distance between damping valve devices.
Solution Approach 2:
The line block serves multiple functions simultaneously: it provides fluidic connections for both working chambers, houses radial channels for damping medium flow, and acts as a mounting structure for the damping valve devices. This multi-functionality consolidates what would otherwise require separate components, optimizing radial space utilization.
2Quantity of substance
If damping valve devices are positioned closer axially to minimize fill quantity in balancing chamber, then balancing chamber efficiency improves, but installation space conflict arises with axle components in wheel box
Solution Approach 1:
The patent transitions from axial positioning to radial positioning of the damping valve devices. By using radial channels within the line block, the damping valve devices can be mounted on the radial outer circumference rather than being positioned axially close to the bottom. This dimensional shift allows minimal fill quantity in the balancing chamber while avoiding conflicts with axle components in the wheel box.
3Reliability
If separate balancing chambers are used for each damping valve device, then fluidic independence is achieved, but device complexity and installation space requirements increase
Solution Approach 1:
The patent merges both damping valve devices into a single common balancing chamber instead of using separate balancing chambers. The line block provides shared radial channels that allow both working chambers to connect to the same balancing chamber, simplifying the overall structure while maintaining fluidic control independence through the damping valve devices themselves.
4Ease of manufacture
If fork-like housing with fluid lines is used to connect working chambers to damping valves, then fluidic connections are simplified, but radial installation space increases
Solution Approach 1:
The patent embeds the radial channels directly within the line block structure, nesting the fluidic pathways inside the housing rather than using external fork-like extensions. The radial channels are integrated into the line block's internal geometry, allowing fluidic connections to be simplified while minimizing radial protrusion and installation space requirements.
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 reduces the radial distance between damping valve devices, optimizing axial installation space and simplifying production, while ensuring efficient fluid flow and minimal choking effects, thus enhancing the overall efficiency and ease of manufacturing.
Implementation Method 1
a vibration damper with two adjustable damping valve devices... a first damping valve device (25) which is adjustable and is connected to a first working chamber (13)... a second damping valve device (29) which is adjustable and is connected to a second working chamber (15)
Implementation Method 2
the two fluidic connections (23, 27) each have a separate radial channel (49, 51) inside the line block (19) which is connected to a respective inlet opening (53, 55) of the damping valve devices (25, 29)
Data Source
AI summary
The disclosure relates to a vibration damper comprising two adjustable damping valve devices, wherein a damping valve device is connected to a piston-rod-side working chamber via a fluid connection and a damping valve device is connected to a working chamber spaced apart from a piston rod within a cylinder filled with damping medium. A fluid connection between the damping valve device and the working chamber occurs via at least one tube element. Both adjustable damping valve devices are connected to a common balancing chamber for receiving the damping medium displaced out of the working chambers by the piston rod. A line block is connected to the cylinder, which forms a first fluid connection to the damping valve device for one of the working chambers and forms an intermediate tube, encasing the cylinder, for a second fluid connection to the damping valve device for the other of the two working chambers. The second fluid connection is also connected to the line block. Both fluid connections have a separate radial channel within the line block, each being connected to an inlet opening of the damping valve devices. A reducer part is arranged between the cylinder and the first fluid line of the line block, and the second fluid line runs within the line block within a projection surface of the cylinder.