Modular Electric Motor Body With PCB Chamber and Rotor Isolation
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Solution Overview
Problem
The existing electric motor technologies are not versatile enough to be used across different types of electric hand-held power tools, leading to increased production and development costs due to the need for multiple motor designs.
Innovation Solution
A modular main body for electric motors that can accommodate various configurations, including a rotor space, a laminated core, and a receiving space for a printed circuit board, allowing for different commutation types and adaptations to specific requirements, such as field-oriented control, and can be easily assembled with a cover for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple different electric motor designs are created for different types of electric hand-held power tools, then the motors can be optimized for specific applications, but production costs and development costs substantially increase
Solution Approach 1:
The patent applies universality by designing a single basic body structure that can serve multiple different electric motor applications. The basic body includes standardized components such as a stator with laminated core, a rotor with permanent magnets, and a housing that can accommodate different configurations. This allows one fundamental design to be adapted for various electric hand-held power tools without requiring completely separate motor designs for each application, thereby reducing both production costs and development costs while maintaining adaptability.
2Ease of manufacture
If a single electric motor design is used for different types of electric hand-held power tools, then production costs are reduced, but the motor cannot be optimized for specific application requirements
Solution Approach 1:
The patent applies segmentation by dividing the electric motor into distinct modular components: a basic body containing the stator and rotor, a housing, and optional additional elements. This segmentation allows the basic body to remain standardized for cost-effective production, while specific components can be modified or configured differently to meet particular application requirements. The modular structure enables optimization for specific applications without requiring complete redesign of the entire motor system.
3Reliability
If completely different electric motors are produced for different applications, then each motor can be optimized for its specific use, but development costs substantially increase
Solution Approach 1:
The patent applies preliminary action by establishing a pre-designed basic body structure that includes all essential motor components (stator with laminated core, rotor with permanent magnets, housing) before specific application requirements are considered. This preliminary standardized design serves as a foundation that can be subsequently adapted to different applications through configuration changes rather than complete redesign, thereby reducing development costs while maintaining the ability to optimize for specific uses.
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
The modular design enhances the flexibility and efficiency of electric motors, allowing them to be used in a wide variety of applications while reducing production costs through adaptable sequential method steps and simplified assembly, maintaining safety and high efficiency.
Implementation Method 1
the printed circuit board is protected against electrostatic voltages or an electrostatic charge
Data Source
AI summary
The invention relates to a basic body for an electric motor, which comprises the following features: a substantially cylindrical outer wall, which forms a rotor space for receiving a rotor at least partially inside the outer wall and on which a winding can be mounted at least partially outside the latter; a laminated core which is held by the outer wall; a receiving space which serves to receive a printed circuit board or another component of the electric motor and which adjoins the rotor space; a partition wall separating the receiving space from the rotor space; at least one orienting device for positionally orienting the printed circuit board or the other component of the electric motor inside the receiving space; a receptacle for a cover which closes the rotor space, said receptacle being situated on the outer wall on the side of the rotor space opposite to the partition wall; and an inner wall, which adjoins the partition wall, for receiving a bearing for the rotor, said inner wall, together with the outer wall, creating the receiving space.