Vibration-Damping Actuator Guide Sleeve Elastic Support

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing vibration-damping electromagnetic actuators face issues with unstable motion and durability due to increased contact pressure and complex structures, particularly when the movable member tilts relative to the stator, leading to problems like abrasion and sticking.

Innovation Solution

A vibration-damping electromagnetic actuator with a tubular guide sleeve and an elastic support body clamped by the stator, allowing for elastic support and tilting of the guide sleeve, which follows the movable member's motion, preventing abrasion and sticking while maintaining stable support through compression and shear bending deformation of the elastic support body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the movable member is displaced tilting relative to the stator, then the guide sleeve is allowed to tilt to follow the motion, but the contact area between the movable member and guide sleeve becomes small, leading to increased contact pressure and abrasion

Engineering Contradiction:

Improvetilting capabilityVSAvoiddurability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The guide sleeve is designed as a thin-walled tubular structure that can elastically deform and tilt to follow the movable member's motion, maintaining adequate contact area while accommodating tilting movements without causing excessive contact pressure or abrasion

Inventive Principle:

Principle #30Flexible shells and thin films

2Adaptability or versatility

If the guide sleeve is supported by separate coil spring and elastic plate, then the guide sleeve can be tilted relative to the stator, but the structure becomes complicated with increased number of parts

Engineering Contradiction:

Improvetilting capabilityVSAvoidstructure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The guide sleeve is directly integrated with the stator structure, eliminating the need for separate supporting components like coil springs and elastic plates. The guide sleeve itself provides both guidance and support functions, simplifying the overall structure while maintaining tilting capability

Inventive Principle:

Principle #5Merging (Combining)

3Stability of the object's composition

If the flange-shaped lower end part of the guide sleeve is clamped between the coil spring and elastic plate, then the guide sleeve is supported in the axial direction, but it becomes difficult for the guide sleeve to tilt following the movable member

Engineering Contradiction:

Improvesupport stabilityVSAvoidtilting capability

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The guide sleeve employs a thin-walled flexible structure that can elastically deform and tilt to follow the movable member's motion, maintaining adequate contact area while accommodating tilting movements without causing excessive contact pressure or abrasion

Inventive Principle:

Principle #30Flexible shells and thin films

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

This configuration enables smooth and stable displacement of the movable member relative to the stator, improving durability and motion stability by avoiding adverse effects like abrasion and sticking, while allowing effective tilting of the guide sleeve to follow the movable member's motion.

Implementation Method 1

a coil member with a coil generating a magnetic field through energization

Methodology Applied

Scientific EffectMagnetic field generation through coil energization: Electromagnetic Induction

Implementation Method 2

the guide sleeve is elastically supported by the stator through compression and shear bending deformation of the elastic support body

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS10100897B2Vibration-damping electromagnetic actuator, active fluid-filled vibration-damping device and active vibration-damping device using the same

Publication Date: 2018.10.16 SUMITOMO RIKO CO LTD

AI summary

A vibration-damping electromagnetic actuator including: a stator; a movable member displaceable relative to the stator, and being disposed within or about it; a coil member with a coil generating a magnetic field through energization, which is disposed at one of the stator and the movable member; an armature displaceable relative to the coil member by an effect of the magnetic field generated by the coil, which is disposed at the other one of the stator and the movable member; a tubular guide sleeve disposed between the stator and the movable member so that the movable member is slidable along the guide sleeve; and an elastic support body fixed to the guide sleeve being clamped by the stator at a portion of the elastic support body apart from the guide sleeve so that the guide sleeve is elastically supported by the stator.