Motor Cover Latching Structure for Tool-Free Pump Motor Assembly
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Solution Overview
Problem
Existing motor-pump structural units face challenges in integrating the motor effectively within the pump, leading to suboptimal structure and functionality, particularly in terms of motor functionality and safety.
Innovation Solution
A motor with a stator core and rotor, where the motor cover is form-lockingly connected to the rear bearing receptacle using resilient latching arms, providing stability and easy tool-free assembly and disassembly, while ensuring adequate ventilation and protection against soiling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the motor cover is made as a separate component for easy assembly, then ease of operation is improved, but structural stability and reliability may deteriorate
Solution Approach 1:
The motor cover incorporates resilient latching arms that function as flexible elements, allowing the cover to be easily assembled and disassembled while maintaining structural stability through elastic engagement with the pump housing
Solution Approach 2:
The motor cover is segmented into a removable component separated from the pump housing, connected through latching arms that provide both ease of operation and reliable connection through form-locking engagement
2Stability of the object's composition
If the motor cover is tightly integrated with the motor housing, then structural stability is improved, but ease of assembly and disassembly deteriorates
Solution Approach 1:
The latching arms are designed as resilient, dynamic elements that can flex during assembly and disassembly operations, providing stable integration during normal operation while enabling easy tool-free removal when needed
Solution Approach 2:
The resilient latching arms automatically engage with corresponding recesses in the pump housing through elastic deformation, creating self-locking engagement that ensures stable integration without requiring additional fastening operations
3Object-affected harmful factors
If the motor cover provides comprehensive protection, then protection against soiling is improved, but ventilation capability may deteriorate
Solution Approach 1:
The motor cover provides comprehensive protection in soiled areas while incorporating localized ventilation openings in regions where cooling is critical, achieving both protection and thermal management through spatially differentiated design
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 solution enhances motor integration within the pump, achieving a more advantageous structure with high motor functionality and safety, while allowing for rapid and tool-free assembly and disassembly of the motor cover.
Implementation Method 1
resilient latching arms which are elastically movable in at least one direction
Data Source
AI summary
A motor for a pump has a stator, a rotor with a front and a rear end, and a rotor bearing arrangement for the rotor, the rotor bearing arrangement having a rear bearing receptacle for the rear end of the rotor, and a motor cover on the rear bearing receptacle. The motor cover is connected form-lockingly with the rear bearing receptacle against movement in the axial direction of the motor away from the motor by way of a latching connection with latching projections on the bearing receptacle and elastic resilient latching arms on the motor cover, each of which interacts with one of the latching projections as a latching connection. The resilient latching arms are integrally connected to the motor cover in a region spaced by between 70% and 90% of the radial extent of the motor cover from the longitudinal center axis of the rotor, wherein they are elongate and are elastically movable in at least one direction.