Scanning Optical Device Rotor Regulation Substrate Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional scanning optical devices face a risk of rotor slipping in the rotational axis direction due to increased load, leading to potential deformation and loss of the stopper mechanism, which can cause the rotor to slip out of the bearing shaft sleeve, especially under impact loads.
Innovation Solution
A scanning optical device is designed with a substrate that includes a first regulation portion to prevent rotor slipping, and a second regulation portion to maintain the first portion's position and prevent deformation, ensuring the rotor remains aligned and stable even under load, using a configuration with a stopper and deformation regulation portion to prevent slipping and maintain overlap in the rotational axis direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stopper is provided by bending the substrate to regulate rotor slipping, then the rotor slipping is regulated, but the stopper may be deformed under heavy impact load causing the rotor to pass over and slip out
Solution Approach 1:
The substrate is segmented into two functional portions: a first regulation portion that contacts the rotor to prevent slipping, and a second regulation portion that maintains the first portion's position and prevents deformation. This segmentation allows each portion to specialize in one function, improving overall reliability under load.
Solution Approach 2:
The solution transitions from a single bent substrate element to a two-dimensional arrangement of regulation portions on the substrate. The first regulation portion extends in one direction to contact the rotor, while the second regulation portion is arranged in a different position to provide structural support, creating a more robust load-bearing structure.
2Weight of moving object
If the scanning optical device is reduced in size and weight, then the device becomes more compact, but the load applied to the device increases creating fall risk and rotor slipping risk
Solution Approach 1:
The substrate is designed with different local qualities: the first regulation portion has properties optimized for contacting the rotor and preventing slipping, while the second regulation portion has properties optimized for maintaining positional stability and resisting deformation under heavy load, allowing the lightweight structure to maintain high reliability.
Data Source
AI summary
A scanning optical device includes a light source device, a rotational polygon mirror, a rotor which rotates together with the rotational polygon mirror, a stator which rotates the rotor, wherein a substrate for holding the stator includes a first regulation portion arranged so as to overlap with a portion of the rotor in a rotational axis direction of the rotor, and in a case where the rotor is caused to move in the rotational axis direction, the first regulation portion comes into contact with the rotor, and a second regulation portion is arranged in a position in relation with the first regulation portion so as to maintain the first regulation portion in a position where the first regulation portion overlaps with the portion of the rotor in the rotational axis direction, so as to regulate deformation of the first regulation portion.