Fan Motor Housing Layout for Secure Lead Wire Routing
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Solution Overview
Problem
Existing fan motors with protruding blocks are prone to damage due to insufficient strength when power wires are drawn out or the motor is driven, leading to potential issues with lead wire detachment or bending.
Innovation Solution
A fan motor design featuring a tubular housing with a lead wire outlet and vertical groove that securely holds lead wires, reducing the likelihood of them coming off or bending outward, utilizing a flange portion with a restricting mechanism to maintain wire position and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a protruding block is used to hold power wires, then various path arrangements are possible, but the protruding block may be damaged due to insufficient strength when the power wire is drawn out or when the motor is driven
Solution Approach 1:
The housing is divided into a tubular portion and a flange portion, with the lead wire outlet positioned in the tubular portion and the vertical groove in the flange portion. This segmentation allows the wire holding function to be separated from the structural support function, enabling flexible wire routing while maintaining structural integrity through the reinforced flange portion.
Solution Approach 2:
The lead wire outlet is positioned in the radial direction of the tubular portion, while the vertical groove extends in the axial direction of the flange portion. This dimensional transition from radial to axial orientation provides flexible wire path arrangements while the restricting portion prevents wire displacement, solving both adaptability and strength requirements.
2Ease of operation
If the protruding block is made longer to provide more wire holding space, then wire arrangement flexibility improves, but the block becomes more prone to damage due to insufficient strength
Solution Approach 1:
The vertical groove acts as an intermediary structure between the lead wire outlet and the wire bundle. It provides a dedicated path for wires to transition from the radial outlet to the axial groove, holding wires securely without requiring an overly long protruding block, thus maintaining durability while ensuring proper wire holding.
Solution Approach 2:
The flange portion is designed with a specific vertical groove and restricting portion configuration that concentrates wire holding functionality in a localized area. This allows sufficient wire management capability without extending the block length, maintaining structural strength while providing adequate wire holding space.
3Adaptability or versatility
If lead wires are drawn radially outward through the lead wire outlet, then wire routing flexibility improves, but the likelihood of wires coming off or bending outwardly increases
Solution Approach 1:
The restricting portion is designed to extend toward the tubular portion, creating a preliminary barrier that prevents lead wires from moving radially outward after they pass through the lead wire outlet. This anti-action counteracts the natural tendency of wires to bend or come off, maintaining wire position stability while preserving routing flexibility.
Solution Approach 2:
The vertical groove is positioned and dimensioned to receive and hold lead wires before they are fully routed to their final destinations. This preliminary action secures wires in a controlled position within the groove, preventing them from coming off or bending outwardly during subsequent installation or operation.
Data Source
AI summary
A fan motor includes a motor including a stationary portion and a rotating portion arranged to rotate about a rotation axis extending in a vertical direction; an impeller including a plurality of blades, and arranged to rotate together with the rotating portion; a housing arranged to house the motor and the impeller therein; and a plurality of lead wires each of which is connected to the motor and is arranged to extend radially outward. The housing includes a tubular portion being tubular, and arranged to extend from an inlet side to an outlet side along the rotation axis, and house at least a portion of the impeller therein; a flange portion arranged to project radially outward from at least a portion of the tubular portion; a lead wire outlet defined in at least a portion of the tubular portion, and arranged to pass through the tubular portion in a radial direction; and a vertical groove arranged to be in communication with the lead wire outlet, and arranged to pass through the flange portion in an axial direction. The flange portion includes a first restricting portion arranged to extend toward the tubular portion. At least one of the lead wires is drawn radially outward through the lead wire outlet, and is held in the vertical groove radially inside of the first restricting portion.