Actuator with Restraining Member for Compact Vibration
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Solution Overview
Problem
Existing actuators with magnetic drive circuits face challenges in maintaining appropriate positioning of elastic members when the first and second magnetic drive circuits are aligned in the same direction, leading to potential misalignment and increased plane area.
Innovation Solution
The actuator incorporates a restraining member to stabilize the supporting body's dimensions, with elastic members compressed between the restraining member and the movable body, ensuring proper positioning and alignment of the magnetic drive circuits, which are disposed on opposite sides of the supporting body, reducing the overall plane area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the first magnetic drive circuit and the second magnetic drive circuit are aligned in the thickness direction to reduce plane area, then the plane area of the actuator is reduced, but the tolerance increases when the circuits are disposed in alignment, causing the elastic member to be improperly positioned
Solution Approach 1:
The patent transitions from aligning magnetic drive circuits in the thickness direction (first direction) to arranging them side by side in the plane direction (second direction). This dimensional reconfiguration increases plane area utilization but eliminates alignment tolerance issues, ensuring proper positioning of the elastic member between the supporting body and movable body.
Solution Approach 2:
The patent introduces a holder as an intermediary component that positions the first and second coils on the same face. The holder provides a reference structure that ensures accurate positioning of the elastic member, acting as a mediator between the magnetic drive circuits and the elastic member to resolve positioning precision issues.
2Manufacturing precision
If the first coils and second coils are disposed on the same face of the holder, then the magnetic drive circuits can be aligned in the thickness direction, but the plane area of the movable body increases
Solution Approach 1:
The patent arranges the first and second magnetic drive circuits side by side in the plane direction (second direction) rather than stacking them in the thickness direction (first direction). This dimensional change reduces the plane area of the movable body while maintaining alignment precision through the holder structure.
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 allows for precise positioning of elastic members, stabilizing the actuator's dimensions and enabling efficient vibration generation in multiple directions while minimizing the actuator's size, making it suitable for compact installations such as hand-held controllers.
Implementation Method 1
a first elastic member having elasticity or viscoelasticity is disposed in contact with both the movable body and the restraining member
Implementation Method 2
a first elastic member having elasticity or viscoelasticity is disposed in contact with both the movable body and the restraining member
Implementation Method 3
a first magnetic drive circuit comprising a first coil and a first magnet disposed adjacent to each other in the first direction and driving the movable body in a second direction orthogonal to the first direction
Data Source
AI summary
An actuator may include a supporting body; a movable body; a first magnetic drive circuit including a first coil and a first magnet disposed adjacent to each other in a first direction and driving the movable body in a second direction orthogonal to the first direction; and a second magnetic drive circuit including a second coil and a second magnet disposed adjacent to each other in the first direction and driving the movable body in a third direction orthogonal to the first direction and intersecting the second direction. The second coil and the second magnet may be disposed in alignment with the first magnetic drive circuit in the first direction. The supporting body may include a restraining member. A first elastic member may be in contact with both the movable body and the restraining member. A second elastic may be in contact with both the movable body the restraining member.