Motor and cleaner comprising the same
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Solution Overview
Problem
Conventional motors used in cleaners experience increased production costs and reduced productivity due to the assembly and material costs associated with weight balancers, which are used to correct rotor assembly imbalances, leading to vibration and noise.
Innovation Solution
The motor design incorporates an impeller with protrusions or grooves formed on its hub to correct for imbalances, eliminating the need for weight balancers, and is constructed with injection-molded housings and bearings to simplify assembly and reduce material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If weight balancers are assembled to the rotor assembly to correct imbalance, then vibration and noise are reduced, but production cost and production time increase
Solution Approach 1:
The patent combines the weight balancer function directly into the impeller structure by forming protrusions or grooves on the impeller hub during injection molding. This integration eliminates the need for separate weight balancer components and their assembly processes, thereby reducing production time while maintaining vibration reduction functionality.
Solution Approach 2:
The balance correction features (protrusions or grooves) are formed during the injection molding process itself, before the impeller is assembled to the motor. This preliminary formation of balancing features eliminates subsequent balancing operations and reduces overall production time while ensuring proper balance correction.
2Object-affected harmful factors
If weight balancers are assembled to the rotor assembly to correct imbalance, then vibration and noise are reduced, but production cost increases
Solution Approach 1:
The patent merges the weight balancer functionality into the impeller component by incorporating protrusions or grooves during the injection molding process. This eliminates the need for separate weight balancer materials and their assembly operations, thereby reducing material costs and production costs while maintaining the vibration reduction effect.
Solution Approach 2:
The patent extracts the weight balancer as a separate component and eliminates it entirely by integrating its balancing function directly into the impeller structure through molded protrusions or grooves. This removal of the separate weight balancer component reduces both material costs and assembly costs.
3Stability of the object's composition
If weight balancers are assembled to the rotor assembly, then imbalance correction is achieved, but device complexity increases
Solution Approach 1:
The patent combines the weight balancer function with the impeller structure by forming protrusions or grooves on the impeller hub. This integration reduces the number of separate components and simplifies the assembly process while achieving the same balance correction effect.
Solution Approach 2:
The patent removes the separate weight balancer component from the rotor assembly and replaces it with integrated balance features on the impeller. This elimination of the separate component reduces device complexity and simplifies the overall assembly structure.
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 design improves stability at high-speed rotation, reduces material costs, simplifies assembly, and enhances productivity while maintaining balance without weight balancers, resulting in a lighter and more efficient motor.
Implementation Method 1
a rotor rotatable about the rotating shaft by electromagnetically interacting with the stator
Implementation Method 2
an impeller coupleable to the rotating shaft to generate a flow of air
Data Source
AI summary
A motor comprising: a stator; a rotating shaft arrangeable inside the stator; a rotor rotatable about the rotating shaft by electromagnetically interacting with the stator while the rotating shaft is arranged inside the stator; and an impeller coupleable to the rotating shaft to generate a flow of air. A protrusion or a groove is formed on the impeller to correct for an imbalance of the impeller.