Spin Window Drive Layout With Radial Motor and Low Overall Height
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Solution Overview
Problem
Conventional spin window drive devices have a high overall height and energy inefficiency, which obstructs the view and limits their application in viewing panes that can be displaced parallel to each other, especially under heavy precipitation or when dealing with viscous coolant and chips.
Innovation Solution
The drive device features an annular stator unit with coil cores and coil bobbins standing directly on a base plate, allowing for precise alignment and a low overall height, along with a rotor unit that nests concentrically with the stator, enhancing torque and energy efficiency, and includes a printed circuit board for efficient coil winding connections and control electronics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a central drive device is used in the spin window, then the drive is structurally favourable and has long service life, but the overall height increases and the field of vision is reduced
Solution Approach 1:
The drive device transitions from a conventional axial magnetic field configuration to a radial magnetic field configuration. This dimensional change in magnetic field orientation allows the magnetic components (stator and rotor) to be arranged radially rather than axially, significantly reducing the overall height of the drive device while maintaining structural integrity and reliability
Solution Approach 2:
The rotor is positioned concentrically within the stator, creating a nested radial arrangement. This nesting allows the magnetic components to be compactly arranged in the radial direction, reducing the axial height of the drive device while preserving the necessary magnetic interaction path for reliable operation
2Power
If a central drive device with coils and bearing unit is used, then the drive function is achieved, but the overall height increases obstructing the view
Solution Approach 1:
The magnetic field is reoriented from axial to radial direction. This changes the spatial arrangement of coils and magnetic components, allowing them to be distributed radially around the rotor rather than stacked axially, thus reducing overall height while maintaining drive power
Solution Approach 2:
The magnetic field distribution is optimized locally at each radial position around the rotor. This allows the drive function to be achieved through distributed radial magnetic interactions rather than requiring a tall axial magnetic path, reducing overall height while preserving power
3Manufacturing precision
If the coil cores and bearing unit stand on the base plate, then precise alignment is achieved, but the overall height increases
Solution Approach 1:
The rotor is nested concentrically within the stator assembly, with both components mounted on the base plate. This nested radial arrangement allows precise alignment to be achieved through concentric mounting while minimizing the overall height of the assembly
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 compact, high-torque drive device with reduced energy losses, enabling effective removal of heavy precipitation and coolant, and allows for a lower overall height spin window design that maintains a large visible area.
Implementation Method 1
a drive device having an annular stator unit (10), an annular rotor unit (30) and a base plate (50), wherein the stator unit (10) has at least three coils (11) having coil cores (12) and coil bobbins (13)
Implementation Method 2
Any liquid or dirt that is deposited on the pane is accelerated by the rotary motion of the pane and moved radially outward by centrifugal force
Data Source
AI summary
The invention relates to a drive device (1) having an annular stator unit (10), an annular rotor unit (30) and a base plate (50). The stator unit (10) has at least three coils (11) having coil cores (12) and coil bobbins (13). The rotor unit (30) has a bearing unit (31), the coils (11) forming a receiving space (14) in the stator unit (10). According to the invention, the coil cores (12) and the bearing unit (31) stand on the base plate (50). The invention also relates to a spin window (100) having such a drive device (1), a pane (110) being arranged on the rotor unit (30).