Micro Water Pump Shaft Support Structure
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Solution Overview
Problem
The existing micro water pumps have a weak support and drop reliability due to a cantilever beam structure between the shaft center and the upper cover, which affects the stability and strength of the impeller rotation.
Innovation Solution
A micro water pump design featuring a housing with a base and upper cover that forms a 'tube-supported beam structure, where the rotating shaft is embedded in the base and accommodated in an accommodation slot, enhancing the structural support and reducing the gap between the shaft and the upper cover, thereby improving the impeller's rotation stability and overall strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a cantilever beam structure is used to support the shaft and upper cover, then the device complexity is reduced, but the strength and reliability of the support structure deteriorates
Solution Approach 1:
The support structure is segmented into multiple functional components: the shaft, the upper cover, and the cantilever beam support structure. This segmentation allows each component to be optimized independently - the shaft and upper cover maintain their simple designs while the cantilever beam is specifically engineered to provide enhanced support strength and reliability.
2Ease of manufacture
If the interval between the shaft and upper cover is increased, then the ease of manufacture is improved, but the reliability of the support structure deteriorates
Solution Approach 1:
The interval between the shaft and upper cover is optimized as a critical parameter. By controlling this dimensional parameter within a specific range, the design achieves both ease of manufacture and high support reliability. The cantilever beam structure compensates for any necessary interval while maintaining strong support.
3Device complexity
If the impeller and upper cover are not connected by a stable structure, then the device complexity is reduced, but the rotation stability of the impeller deteriorates
Solution Approach 1:
The shaft acts as an intermediary element between the impeller and upper cover. It provides a stable connection that transmits rotational motion while maintaining structural integrity. The shaft's positioning within the upper cover and its connection to the impeller creates a reliable transmission path without requiring complex direct connections.
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 enhanced support structure increases the rotating shaft's strength, improves impeller rotation stability, and ensures better drop reliability, resulting in a more robust and reliable micro water pump.
Implementation Method 1
a stator installed in the base for driving the rotor to rotate
Implementation Method 2
the impeller of the micro water pump rotates around the axis under the force of a magnetic field
Data Source
AI summary
The present disclosure provides a micro water pump, including: a housing having a base, an upper cover engaging with the base, an inner cavity, an inlet communicated with the inner cavity, and an outlet communicated with the inner cavity. A drive mechanism installed in the housing, includes a rotating shaft, an impeller arranged in the inner cavity and rotatably connected with the rotating shaft, a rotor installed in the impeller, and a stator installed in the base for driving the rotor to rotate. The upper cover includes a body part, and an accommodation slot formed by sinking from the surface of the body part close to the base; one end of the rotating shaft is embedded in the base, and the other end is accommodated in the accommodation slot. Whole strength of the micro water pump is enhanced thereby.