Scanner Motor V-Shaped Spring Polygonal Mirror Distortion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional scanner motors experience distortion of the polygonal mirror's reflection surface due to compression forces, leading to unpredictable laser beam reflection and deteriorated printing quality, especially during high-speed rotation.
Innovation Solution
A scanner motor design featuring a V-shaped compression spring that compresses the polygonal mirror's inner circumferential surface both horizontally and vertically, with a shaft penetrating through the mirror and a burring part to secure the spring, preventing displacement and distortion by distributing the compression force evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a compression spring is used to fix the polygonal mirror, then the mirror is secured in position, but the compression force distorts the reflection surface of the mirror
Solution Approach 1:
The compression spring is segmented into multiple V-shaped curved parts (typically three) distributed around the polygonal mirror. Each V-shaped part contacts the mirror at a specific location, dividing the compression force into multiple application points rather than a single point, thereby reducing localized distortion of the reflection surface while maintaining overall positional stability.
Solution Approach 2:
The V-shaped curved parts are strategically positioned to contact the polygonal mirror at locations that minimize interference with the reflection surface. The compression force is applied locally at the inner circumferential surface edges rather than directly on the reflection surface, preserving the local quality and flatness of the reflection surface while achieving global positional stability.
2Stability of the object's composition
If the compression force is applied to secure the polygonal mirror, then displacement is prevented, but the reflection surface becomes distorted
Solution Approach 1:
The V-shaped curved parts introduce a dimensional advantage by applying compression force through a geometric configuration that converts vertical compression into combined horizontal and vertical forces. This dimensional transformation allows the spring to secure the mirror firmly while the V-shape geometry distributes the force to avoid direct compression of the reflection surface, preserving its shape.
3Device complexity
If a conventional compression spring is used, then the structure is simple, but the polygonal mirror experiences unpredictable laser beam reflection due to surface distortion
Solution Approach 1:
The spring structure is segmented into multiple V-shaped curved parts instead of a single conventional spring, creating a more complex but reliable configuration. This segmentation ensures that the compression force is distributed evenly around the polygonal mirror, preventing surface distortion and ensuring consistent laser beam reflection accuracy while maintaining rotational stability.
Solution Approach 2:
The spring design changes the compression parameters by using V-shaped curved parts with specific geometric parameters (angle, curvature radius, contact point positions) that optimize the force distribution. These parameter changes allow the spring to provide sufficient compression for stability while maintaining the reflection surface integrity, ensuring reliable laser beam reflection.
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 the polygonal mirror, maintaining the precision of the reflection surface and preventing displacement by vibrations or shocks, ensuring reliable high-speed rotation without compromising printing quality.
Implementation Method 1
a compression spring, which is formed on an upper side of the polygonal mirror and includes a V-shaped curved part bent downwardly in such a way that the V-shaped curved part compresses an upper edge of an inner circumferential surface of the polygonal mirror both horizontally and vertically
Implementation Method 2
a rotational force is generated through an electromagnetic interaction between a magnet 5 and a coil 6
Data Source
AI summary
A scanner motor is disclosed. In accordance with an embodiment of the present invention, the scanner motor includes a shaft, a housing having an insertion-hole formed in a center thereof, in which the shaft is inserted into the insertion-hole, a polygonal mirror, which is mounted on an upper side of the housing and has a through-hole formed in a center thereof in such a way that the shaft penetrates through the polygonal mirror, and a compression spring, which is formed on an upper side of the polygonal mirror and includes a V-shaped curved part bent downwardly in such a way that the V-shaped curved part compresses an upper edge of an inner circumferential surface of the polygonal mirror both horizontally and vertically.