Damping Valve Insert Assembly With Magnetic Casing and Leak Sealing

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Solution Overview

Problem

Existing solutions for incorporating a casing member in damping arrangements are either limited by material choices or increase manufacturing and assembly costs, and require tight air gap tolerances to prevent hydraulic fluid leakage.

Innovation Solution

An insert arrangement with a casing member and armature member that allows for easy assembly and cost-effective manufacturing, featuring fixating means on the casing member for secure attachment, a sealing member to prevent leakage, and a design that facilitates direct verification of placement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the casing member is incorporated in the wall of the valve cavity, then the magnetic field is enclosed to minimize magnetic losses, but the material choice is limited and tight air gap tolerances are required

Engineering Contradiction:
Improvemagnetic field enclosureVSAvoidmaterial choice
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The damping arrangement is divided into separate components: the valve cavity wall, the insert arrangement (comprising armature member and casing member), and the solenoid arrangement. The casing member is segmented from the valve cavity wall and integrated with the armature member, allowing independent material selection and manufacturing while maintaining magnetic field enclosure functionality

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The casing member is nested within the insert arrangement, which itself is inserted into the valve cavity. The casing member extends around the axial portion of the armature member, creating a nested structure that provides magnetic field enclosure without requiring the valve cavity wall to be made of magnetic material

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If the casing member is incorporated in the wall of the valve cavity, then the magnetic field is enclosed, but very tight air gap tolerances are required between armature and cavity wall

Engineering Contradiction:
Improvemagnetic field enclosureVSAvoidair gap tolerance
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

By segmenting the casing member from the valve cavity wall and integrating it with the armature member, the system allows for independent positioning and adjustment. The insert arrangement can be positioned within the valve cavity with less stringent tolerance requirements compared to integrating the casing directly into the cavity wall

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insert arrangement acts as an intermediary between the valve cavity wall and the armature member. This intermediary structure provides the necessary magnetic field enclosure while allowing for easier positioning and adjustment, reducing the need for very tight air gap tolerances

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If the casing member is integrated in the base portion of the armature member, then the magnetic field is enclosed, but the armature member requires multiple pieces to be assembled, increasing manufacturing and assembly costs

Engineering Contradiction:
Improvemagnetic field enclosureVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The system is segmented into the armature member with integrated casing member and the separate valve cavity wall. This segmentation allows the armature member to be manufactured as a single piece with the casing member integrated, eliminating the need for multiple pieces and reducing manufacturing and assembly costs

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The casing member is merged with the armature member to form an integrated insert arrangement. This merging provides the magnetic field enclosure functionality while allowing the armature member to be manufactured as a single component, reducing manufacturing complexity and assembly costs

Inventive Principle:
Principle #5Merging (Combining)

4Reliability

If the casing member is integrated in the base portion of the armature member, then the magnetic field is enclosed, but very tight air gap tolerances are required between casing member and cavity wall

Engineering Contradiction:
Improvemagnetic field enclosureVSAvoidair gap tolerance
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

By segmenting the casing member from the valve cavity wall and integrating it with the armature member, the system allows for easier positioning and adjustment. The insert arrangement can be installed with less stringent tolerance requirements compared to integrating the casing directly into the cavity wall

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The casing member is pre-integrated with the armature member to form the insert arrangement before installation. This preliminary integration allows for easier positioning and adjustment during installation, reducing the need for very tight air gap tolerances between the casing member and cavity wall

Inventive Principle:
Principle #10Preliminary action

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 assembly, reduces manufacturing complexity and costs, and allows for less stringent air gap tolerances while effectively preventing hydraulic fluid leakage.

Implementation Method 1

The casing member is further adapted with a magnetically conducting material for substantially closing a magnetic field generated by the solenoid arrangement

Methodology Applied
Scientific EffectMagnetic field: Magnetic Field

Implementation Method 2

a magnetic field generated by the solenoid arrangement

Methodology Applied
Scientific EffectMagnetic field generation: Electromagnetic Induction

Data Source

PatentUS12398820B2Insert arrangement and a method of assembling a damping arrangement
Publication Date: 2025.08.26 ADVANCED SUSPENSION TECHNOLOGY LLC
  • US12398820B2 patent drawing
  • US12398820B2 patent drawing
  • US12398820B2 patent drawing

AI summary

The present application relates to an insert arrangement for engaging with a solenoid arrangement and for closing a valve cavity of a damping arrangement. The insert arrangement comprises: an armature member adapted in shape and size to provide a base portion and an axial portion extending out of the base portion in a direction parallel to a first axis, a casing member adapted to extend around the axial portion to define a receiving space between the axial portion and the casing member. The solenoid arrangement is at least partly arrangeable in said receiving space, and the casing member is further adapted with a magnetically conducting material for substantially closing a magnetic field generated by the solenoid arrangement. The insert arrangement further comprises fixating means for fixating the armature member to the damping arrangement, wherein said fixating means are arranged on the casing member.