Fan Motor Lead Wire Retention via Vertical Groove Guide
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Solution Overview
Problem
Conventional fan motors face issues where power supply wires can come off from the gap between the frame and the convex block, leading to potential interference and damage due to the lack of effective wire management.
Innovation Solution
The design incorporates a plate-like guide member positioned within a vertical groove in the housing, which accommodates the lead wires radially inward, preventing them from coming off or deflecting outward by securing them through a tubular portion, flange portion, lead wire outlet port, and vertical groove configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power supply wire is hooked on the frame without additional guidance, then the structure is simple, but the wire may come off radially outward from the gap between the flange portion and the convex block
Solution Approach 1:
The housing is divided into functional zones: the tubular portion for motor accommodation, the flange portion for mounting, and the vertical groove for wire guidance. This segmentation allows each part to perform its specific function effectively, with the vertical groove specifically designed to guide and retain the power supply wire within the housing.
Solution Approach 2:
The vertical groove acts as an intermediary structure between the flange portion and the convex block, providing a dedicated pathway for the power supply wire. This intermediary element prevents the wire from coming off by guiding it through a controlled route rather than allowing it to be freely hooked on the frame.
2Ease of operation
If the lead wire outlet port is provided in the tubular portion, then the wire can be guided outward, but the wire may still deflect or come off without proper containment
Solution Approach 1:
The vertical groove is pre-formed in the housing structure to anticipate and prevent wire deflection before it occurs. By providing this guiding structure in advance, the wire is automatically directed along the intended path from the lead wire outlet port to the external connection, eliminating the need for additional wire management components.
3Reliability
If the vertical groove penetrates the flange portion, then the wire is contained within the housing, but the housing structure becomes more complex
Solution Approach 1:
The vertical groove is integrated into the housing as a single molded or machined feature rather than being a separate component. This merging of the guidance function into the existing housing structure minimizes additional manufacturing steps while providing effective wire containment through the groove that penetrates the flange portion.
Data Source
AI summary
A fan motor includes an electric motor including a stationary unit and a rotary unit, an impeller including blades and rotating together with the rotary unit, a housing accommodating the electric motor and the impeller, lead wires connected to the electric motor and extending radially outward, and a guide member. The housing includes a tubular portion extending along a rotation axis and accommodating at least a part of the impeller, a flange portion protruding radially outward from at least a part of the tubular portion, a lead wire outlet port provided in at least a part of the tubular portion, and a vertical groove communicating with the lead wire outlet port and penetrating the flange portion in an axial direction. The guide member is disposed inside the vertical groove, and at least a part of the lead wires is accommodated radially inward of the guide member in the vertical groove.