Conductive Bearing Plate Merging PCB and Motor Support
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Solution Overview
Problem
Existing electric drives face challenges in securely mounting and handling components while efficiently accommodating multiple electric and electronic components in a space-saving manner with effective interference suppression.
Innovation Solution
A conductive bearing plate is mechanically and electrically connected to a printed circuit board with tracks on both sides, allowing for direct contact and easy mounting, and the use of carbon brushes with inductors for short conductor connections, along with a protective device formed as one piece with other components for enhanced interference suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If components are accommodated in a compact arrangement, then space utilization is improved, but mounting security and handling ease deteriorate
Solution Approach 1:
The patent combines the printed circuit board mounting function with the bearing plate function into a single integrated component. The bearing plate serves dual purposes: supporting the rotor bearings and providing a mounting surface for the printed circuit board, thereby reducing the number of separate components while maintaining secure mounting in the compact space
Solution Approach 2:
The bearing plate is designed as a multi-functional component that simultaneously serves as a mechanical support structure for bearings and an electrical mounting platform for the printed circuit board. This universal component approach allows secure mounting of multiple functions within limited space
2Object-affected harmful factors
If conductor connections are made shorter, then interference suppression is improved, but manufacturing complexity increases
Solution Approach 1:
The bearing plate merges mechanical support and electrical connection functions into one component. The printed circuit board is directly mounted on the bearing plate, creating short conductor connections for interference suppression while using standard manufacturing processes for both components that remain economically viable
3Ease of operation
If the protective device extension is increased, then handling protection is improved, but device complexity increases
Solution Approach 1:
The protective device is integrated with the bearing plate as a unified component rather than being a separate part. This merging provides extended protection for handling and mounting operations while avoiding the complexity of additional separate protective 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 secure, economical mounting and handling of components with improved interference suppression, allowing for more components to be accommodated in a compact space and preventing damage during handling.
Implementation Method 1
a ground track of the printed circuit board faces the bearing plate and is in direct electrical contact with it
Data Source
AI summary
An electric drive (1) with a motor housing (16), a bearing plate (4), an electrically insulating brush holder plate (3) with formed-on plug housing (11), a printed circuit board (13) with plug lugs 14 which project through plug recesses of the brush holder plate (3) into the plug housing (11), where the brush holder plate (3) serves as a carrier for the printed circuit board (13). The objective of the invention is to present an electric drive which can be securely mounted and handled in an economical manner in which many electric and electronic components are accommodated in a space-saving manner and which has good interference suppression characteristics. This objective is realized according to the invention by the fact that a sensor (23) is mechanically and electrically connected to the printed circuit board (13), the bearing plate (4) is electrically conductive, the printed circuit board (13) comprises tracks on both sides, the sensor (23) is held in a recess (25) of the printed circuit board (13), and a ground track (27) of the printed circuit board (13) faces the bearing plate (4) and is in direct electrical contact with it and mechanically fastened to it.