Motor Board Case Wire Retention Without Binding Bands
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing motor designs require an increased number of components and workload due to the use of a binding band for securing lead wires, which complicates the assembly and increases the risk of component stress and disconnection.
Innovation Solution
A motor design featuring a cylindrical stator with a board case having U-shaped holding portions that securely encase a protection tube around the lead wire, eliminating the need for a binding band by sandwiching the tube between these portions, thus reducing the number of components and workload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a binding band is used to secure the lead wire to the terminal block, then the lead wire can be fixed in position, but the number of components increases and the workload increases
Solution Approach 1:
The terminal block is designed to integrate both the electrical connection function and the lead wire fixation function into a single component. The terminal block includes a clamping structure that directly secures the lead wire without requiring a separate binding band, thereby merging two functions (electrical connection and mechanical fixation) into one component and reducing the total number of parts.
Solution Approach 2:
The terminal block is designed with self-contained fixation capabilities through its integrated clamping structure. The terminal block itself provides the securing mechanism for the lead wire, eliminating the need for external binding bands. This self-service design allows the terminal block to perform both its electrical function and mechanical retention function without additional components.
2Reliability
If a binding band is used to secure the lead wire, then the lead wire can be fixed, but the workload for assembly increases
Solution Approach 1:
The terminal block integrates the clamping structure directly into its body, combining the electrical connection function and the lead wire fixation function into a single component. This merger eliminates the need for separate assembly steps involving binding bands, thereby reducing assembly workload while maintaining reliable lead wire fixation.
Solution Approach 2:
The terminal block incorporates a self-contained clamping mechanism that automatically secures the lead wire during the terminal block installation process. The integrated design allows the lead wire to be fixed as part of the terminal block assembly operation itself, eliminating additional assembly steps and reducing overall workload.
3Reliability
If multiple components are used for securing the lead wire, then the fixation can be achieved, but the risk of component stress and disconnection increases
Solution Approach 1:
The terminal block integrates the clamping structure directly into its body, creating a unified fixation system. This integration eliminates the interfaces between separate components (terminal block and binding band), thereby reducing the number of potential failure points and minimizing stress concentration at connection interfaces. The lead wire is secured directly by the terminal block's clamping structure without intermediate components.
4Reliability
If a binding band is used to secure the lead wire, then the lead wire can be fixed, but the number of components increases
Solution Approach 1:
The terminal block is designed to integrate both the electrical connection function and the lead wire fixation function into a single component. The terminal block includes a clamping structure that directly secures the lead wire without requiring a separate binding band, thereby merging two functions (electrical connection and mechanical fixation) into one component and reducing the total number of parts.
Solution Approach 2:
The terminal block is designed with self-contained fixation capabilities through its integrated clamping structure. The terminal block itself provides the securing mechanism for the lead wire, eliminating the need for external binding bands. This self-service design allows the terminal block to perform both its electrical function and mechanical retention function without additional components.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A motor includes: a stator, a rotor disposed inside the stator; a shaft (8) connected to the rotor and extending along a center axis of the stator; a board case (13) provided at one end of the stator in a direction along the center axis; a circuit board (15) provided oppositely to the stator with the board case (13) being interposed therebetween; a connecting portion provided on a mounting surface (15a) of the circuit board (15), the circuit board having a surface facing the stator and opposite to the mounting surface; a lead wire (40) connected to the connecting portion, and a protection tube (41) to cover a circumference of the lead wire (40). The board case (13) has a first holding portion (25) and a second holding portion (26) that are formed thereon, the first holding portion (25) protruding above the mounting surface (15a) out of the circuit board (15), the second holding portion (26) protruding above the mounting surface (15a) out of the circuit board (15) and facing the first holding portion (25), and the protection tube (41) is sandwiched and thus held between the first holding portion (25) and the second holding portion (26).