Vibration-Damping Electromagnetic Actuator Stator Alignment
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Solution Overview
Problem
Existing vibration-damping electromagnetic actuators face issues with variability in output characteristics and durability due to dimensional errors and strain in support rubber elastic bodies, leading to abrasion and operation failures from forced contact between the stator and movable member.
Innovation Solution
A vibration-damping electromagnetic actuator design with a gap between the stator and housing peripheral wall allows for alignment and fixation of the stator relative to the movable member, reducing strain on the support rubber elastic body and minimizing abrasion, while a position adjustment mechanism ensures accurate alignment in both axial and perpendicular directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the stator is fixed to the housing with high positioning accuracy, then the relative alignment between stator and movable member is improved, but the support rubber elastic body experiences strain and component dimensional errors cause variability in output characteristics
Solution Approach 1:
The patent introduces a position adjustment mechanism that allows the stator to be dynamically adjusted to different positions along the axial direction. This enables the system to adapt to dimensional errors and maintain optimal alignment between the stator and movable member, resolving the contradiction between fixed positioning accuracy and output stability by making the positioning system adjustable rather than fixed.
Solution Approach 2:
The patent changes the parameter of stator position from a fixed value to an adjustable range. By providing a position adjustment mechanism, the stator's axial position can be varied to compensate for dimensional errors in components, thereby maintaining stable output characteristics while achieving high alignment accuracy through adjustment rather than relying solely on manufacturing precision.
2Stability of the object's composition
If the stator and movable member are aligned with high accuracy, then the relative position stability is improved, but forced contact occurs causing abrasion and operation failures
Solution Approach 1:
The position adjustment mechanism allows the stator to be dynamically positioned at an optimal location that maintains stable relative positioning between the stator and movable member while avoiding forced contact. This dynamic adjustment capability enables the system to achieve position stability without the harmful effects of forced contact that occur with rigid fixed positioning.
Solution Approach 2:
The patent applies preliminary action by adjusting the stator position before operation to prevent forced contact. The position adjustment mechanism allows the stator to be preliminarily positioned at an optimal location that avoids dimensional errors leading to forced contact, thereby preventing abrasion and operation failures before they occur during operation.
3Manufacturing precision
If a position adjustment mechanism is added, then alignment accuracy and output stability are improved, but the device complexity increases
Solution Approach 1:
The position adjustment mechanism introduces a controlled degree of freedom along the axial direction, allowing the stator to be adjusted to different positions. This simple dynamic adjustment capability provides both alignment accuracy and output stability without requiring complex multi-dimensional adjustment mechanisms, thus achieving improved precision with minimal increase in device complexity.
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 design stabilizes output characteristics, improves durability by reducing strain and abrasion, and prevents operation failures, enabling effective vibration damping with enhanced reliability and longevity.
Implementation Method 1
a coil member with a coil generating a magnetic field through energization, which is disposed at one of the stator and the movable member; and an armature displaceable relative to the coil member by an effect of the magnetic field generated by the coil
Implementation Method 2
a support rubber elastic body elastically connecting the movable member to the housing
Data Source
AI summary
A vibration-damping electromagnetic actuator including: a tubular stator; a movable member displaceable relative to the stator in an axial direction, and being inserted in the stator; a housing including a tubular peripheral wall and being attached to the stator; a support rubber elastic body elastically connecting the movable member to the housing; and a coil member and an armature displaceable relative to the coil member disposed at one and the other of the stator and the movable member respectively. The stator is arranged in an inner periphery of the peripheral wall, and a gap is provided between the peripheral wall and the stator in an axis-perpendicular direction. The stator is attached to the housing in a state aligned with the movable member by means of displacement of the stator relative to the housing in the axis-perpendicular direction.