Electric Motor Heat Transfer Component Internal Fixing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing electric motor design, which uses screws to fix heat transfer components, increases the number of components and assembly processes, leading to a larger motor size due to protruding fixing members.
Innovation Solution
The electric motor incorporates a stator with a sleeve shape and a board case that includes an extension portion to engage with a heat transfer component, allowing for internal fixation without screws, reducing the number of components and assembly processes while preventing size increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw fixing member is used to fix the heat transfer component, then the heat transfer component can be securely fixed, but the number of components increases and the assembly process becomes more complex
Solution Approach 1:
The board case is integrated with an extension portion that directly engages with the heat transfer component, merging the fixing function into the board case structure itself. This eliminates the need for separate screw fixing members while maintaining secure fixation of the heat transfer component.
Solution Approach 2:
The fixing function is extracted from the heat transfer component and transferred to the board case through the extension portion. The board case now performs both structural support and fixing functions, reducing the overall component count while maintaining reliability.
2Reliability
If a screw fixing member is used to fix the heat transfer component, then the heat transfer component can be securely fixed, but the number of assembly processes increases
Solution Approach 1:
The fixing operation is merged with the board case structure through the extension portion. The heat transfer component is fixed by the integrated extension portion without requiring separate screw fastening operations, reducing assembly steps and improving productivity.
3Reliability
If a screw fixing member is attached from the outside of the casing, then the heat transfer component can be fixed, but the fixing member protrudes from the casing and the size of the electric motor increases
Solution Approach 1:
The extension portion of the board case is nested within the casing structure, and the heat transfer component is fixed internally through this nested extension. This internal fixation approach eliminates protruding external fixing members, maintaining compact motor dimensions while ensuring reliable fixation.
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 the heat transfer component to be fixed internally, reducing the motor's size and component count, and simplifies the assembly process by eliminating the need for external screws.
Implementation Method 1
a heat transfer component that transfers heat generated from the electronic component to the casing
Data Source
AI summary
An electric motor includes: a stator having a sleeve shape; a rotor inside the stator; a shaft coupled to the rotor and stretching along a central axis of the stator; a board case on one end side of the stator in a direction along the central axis; a circuit board on an opposite side of the stator with the board case interposed; a heat generating component on a mounting surface, which is opposite to a surface of the circuit board oriented to a side of the stator; a casing that covers a side of the mounting surface; and a heat transfer component between a surface of the casing that faces the circuit board and the heat generating component. The board case is provided with an extension portion that extends toward the circuit board. The heat transfer component is formed with a first engagement portion with which the extension portion engages.