Fan Wire Holding Mechanism for Slack Prevention
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Solution Overview
Problem
Conventional fans experience issues with lead wires becoming slack or being damaged due to inadequate holding mechanisms, which can obstruct installation or cause damage to electronic components, especially in compact electronic devices where space is limited.
Innovation Solution
A fan design featuring a wire-receiving section with a through hole and a wire-holding member that is inserted along the depth direction to securely hold the wires in place, preventing them from coming out or becoming slack, using a rib to connect the base and housing and a wire-holding member that closes the gap between the extending portion and the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the wires are not firmly held on the housing, then the installation process is simpler, but the wires may go slack and be lifted from the end surface of the housing, causing damage or breaking the wires
Solution Approach 1:
A wire holding member is introduced as an intermediary component between the wires and the housing. This holding member includes a wire receiving section that receives the wires and a wire holding section that protrudes to contact and secure the wires, preventing them from going slack or being lifted while maintaining ease of installation
Solution Approach 2:
The wire holding member is divided into distinct functional sections: a wire receiving section for guiding and positioning the wires, and a wire holding section with protrusions for securing the wires. This segmentation allows each part to perform its specific function effectively while maintaining overall simplicity
2Reliability
If a bushing member is used to press the wires against the housing, then the wires are held firmly, but excessive force may be applied to the wires, resulting in damaging or breaking the wires
Solution Approach 1:
The wire holding member features localized protrusions (holding sections) that contact the wires at specific points rather than applying uniform pressure across the entire wire. This localized contact provides firm holding while distributing force to prevent damage or breaking of the wires
Solution Approach 2:
Instead of pressing the wires against the housing from the outside (which causes excessive force), the wire holding member allows the wires to be received and held from within the wire receiving section, inverting the traditional approach and reducing harmful forces on the wires
3Ease of manufacture
If the wires extend from the circuit board into a radially outside direction, then the wiring is simpler, but the wires cross the passage of air flow and may get caught with other electronic components during installation
Solution Approach 1:
The wire holding member acts as an intermediary that provides a dedicated pathway and securing mechanism for the wires at the housing end surface. This prevents the wires from crossing the air flow passage and getting caught with other components during installation, while still maintaining wiring simplicity
Solution Approach 2:
The wire holding member is pre-installed on the housing with the wire receiving section positioned to guide the wires before the actual wiring operation. This preliminary preparation ensures that wires are properly routed and secured, preventing them from interfering with other components during installation
Data Source
AI summary
Fan includes wires electrically connected to the circuit board outwardly extends from a base toward a housing along a rib connecting the base supporting a motor and the housing. The housing includes a wire-receiving section defined by a through hole extending in the housing, and a slit connecting the through hole and an outside of the housing along a direction in which the through hole extends. The wires are inserted into the wire-receiving section via the slit, and then, led outside of the housing through the wire-receiving section. A wire-holding member is then inserted into the wire-receiving section to close the slit to prevent the wires from coming out of the wire-receiving section and to restrict the movement of the wires.