Linear Motor Lateral Mover Stator Arrangement
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Solution Overview
Problem
Conventional linear motors face challenges in reducing depth dimension while maintaining sufficient propulsion force and rigidity, leading to constraints on thickness reduction and potential decline in propulsion force.
Innovation Solution
The linear motor design features a thin tray-shaped base plate with a mover on a lateral surface of the movable section and a stator opposed to it, along with sub-teeth and magnetic plates to reduce cogging force, allowing for a thinner structure without compromising propulsion force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the depth dimension of the linear motor is reduced to downsize the component transfer apparatus, then the apparatus size is reduced, but the propulsion force may decline and structural rigidity is compromised
Solution Approach 1:
The patent repositions the mover from a configuration that extends in the depth direction (Z-axis) to one that extends in the widthwise direction (Y-axis). This dimensional change allows the magnetic interaction to occur laterally rather than depth-wise, enabling the linear motor to achieve sufficient propulsion force with a reduced depth dimension. The mover is arranged on the lateral surface of the movable section, creating a side-by-side arrangement with the stator instead of a front-to-back arrangement.
2Volume of moving object
If the depth dimension of the linear motor is reduced, then the apparatus size is reduced, but the structural rigidity is compromised
Solution Approach 1:
By moving the magnetic interaction components to a lateral arrangement in the widthwise direction, the patent redistributes the structural load and magnetic forces across a different spatial configuration. This allows the depth dimension to be reduced while the widthwise dimension maintains sufficient structural integrity and rigidity to support the propulsion forces.
3Force
If conventional linear motor structure is used, then sufficient propulsion force is achieved, but the depth dimension is large
Solution Approach 1:
The patent fundamentally changes the spatial arrangement by positioning the mover on the lateral surface extending in the widthwise direction rather than in the depth direction. This creates a side-by-side configuration where the stator and mover interact magnetically across the widthwise dimension, allowing the depth dimension to be minimized while preserving propulsion capability.
Solution Approach 2:
The patent employs an asymmetric arrangement where the mover is positioned only on one lateral surface of the movable section rather than symmetrically on both sides or in the conventional depth-wise configuration. This asymmetric lateral positioning optimizes the magnetic flux path and allows for a more compact depth dimension while maintaining effective propulsion force through strategic placement of the magnetic components.
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 a linear motor with sufficient propulsion force and reduced depth dimension, facilitating the downsizing of component transfer apparatuses while maintaining structural integrity and propulsion efficiency.
Implementation Method 1
a linear motor provided with a magnetic body (10, 3) and an armature (3, 10), the linear motor adapted to produce a force causing the magnetic body and the armature to be relatively displaced along a given moving direction by interaction of magnetic fluxes generated between the magnetic body and the armature
Data Source
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AI summary
The present invention relates to a linear motor provided with a magnetic body and an armature and adapted to produce a force causing the magnetic body and the armature to be relatively displaced in a given moving direction by interaction of magnetic fluxes generated between the magnetic body and the armature during an operation of supplying electric power to the armature. The linear motor is provided with: a base plate adapted to set the moving direction on a base surface thereof; a movable section attached to the base plate in a relatively movable manner reciprocating along the moving direction with respect to the base plate; a mover provided on and along a lateral surface of the movable section on a one edge side in a widthwise direction of the base surface perpendicular to the moving direction, and formed as one of the magnetic body and the armature; and a stator provided on the base surface of the base plate to be disposed opposed to the mover from the one edge side toward the other edge side in the widthwise direction, and formed as other one of the magnetic body and the armature to extend along the moving direction.