Axially Overlapping Scanning Device Rotor Design
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Solution Overview
Problem
Existing scanning devices are not compact enough in the axial direction due to the offset arrangement of transmitters, receivers, and drive motors, which limits their slimness and efficiency.
Innovation Solution
The scanning device is designed with a rotor that supports the transmitter and receiver, which are axially overlapping, and a drive motor with a stator arranged in an overlapping manner, allowing for a compact axial configuration by integrating these components on the rotor and eliminating the need for additional optical devices like mirrors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the transmitter, receiver, and drive motor are arranged offset in the axial direction, then the components can be easily mounted and maintained, but the scanning device becomes larger and less compact in the axial direction
Solution Approach 1:
The patent transitions from an axial arrangement of components to a radial arrangement where the transmitter and receiver are positioned at different radial distances from the rotation axis. This dimensional change allows components to be compact in the axial direction while remaining accessible for mounting and maintenance through radial positioning.
Solution Approach 2:
The transmitter and receiver are nested within the rotor structure at different radial positions, with the transmitter closer to the rotation axis and the receiver at a larger radial distance. This nesting approach allows multiple components to occupy overlapping axial spaces while maintaining functional separation.
2Length of moving object
If the transmitter and receiver are arranged in axially overlapping manner on the rotor, then the scanning device becomes more compact and slim in the axial direction, but the components may interfere with each other spatially
Solution Approach 1:
The transmitter and receiver are positioned at different local radial positions within the rotor, with the transmitter at a smaller radial distance and the receiver at a larger radial distance. This local differentiation allows axial overlap while preventing spatial interference through radial separation.
3Length of moving object
If the drive motor is arranged in axially overlapping manner with the transmitter and receiver, then the scanning device becomes more slim in the axial direction, but the stator may interfere with the rotating components
Solution Approach 1:
The stator is positioned radially between the transmitter and receiver, creating a radial separation that prevents interference with rotating components while allowing axial overlap. This spatial arrangement in the radial dimension resolves the conflict between compactness and interference avoidance.
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 results in a scanning device that is particularly slim and compact in the axial direction, reducing the number of components and maintaining optimal adaptability to existing construction spaces while minimizing rotary oscillations and component maintenance.
Implementation Method 1
The receiver (25) is designed to capture at least a fraction of the electromagnetic radiation reflected and/or scattered by an object
Implementation Method 2
The receiver (25) is designed to capture at least a fraction of the electromagnetic radiation reflected and/or scattered by an object
Implementation Method 3
The drive motor (30) includes at least one means (50) for generating a torque. The means is arranged in at least partly axially overlapping manner in relation to the transmitter and/or in relation to the receiver
Data Source
AI summary
A scanning device includes a transmitter, a receiver, and a rotor that is configured to be mounted in a rotatable manner about an axis of rotation. The transmitter is configured to at least occasionally emit electromagnetic radiation, and the receiver is configured to sense at least part of the electromagnetic radiation reflected and/or scattered by an object. The transmitter and the receiver are arranged on the rotor in an at least partially axially overlapping manner based on the axis of rotation.