Rotatable Dryer Stand with Continuous Electrical Contact for Charging
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Solution Overview
Problem
Existing drying machines with embedded charging batteries, like wireless hair dryers, cannot be independently rotated due to structural coupling restrictions, making them inconvenient for long-term use and difficult for users with poor eyesight or limited field of view to charge.
Innovation Solution
A drying machine design featuring a stand with a grip and seating unit that allows the dryer to be stably held and rotated, with electrical terminals and contact terminals arranged to maintain power supply and connection regardless of rotation, enabling easy charging and use without specific directional alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dryer is coupled to the charger with direct terminal contact, then power supply is achieved, but the dryer cannot be independently rotated due to structural coupling restrictions
Solution Approach 1:
The electrical connection is segmented into multiple contact points (first contact terminal and second contact terminal) distributed around the cylindrical interface. This segmentation allows the dryer to rotate while maintaining continuous electrical contact, as the distributed terminals ensure that at least one pair of contacts remains connected during rotation.
Solution Approach 2:
The electrical terminals are arranged in a circular pattern around the cylindrical grip interface, transitioning from linear to circular arrangement. This dimensional change allows rotational movement while maintaining contact, as the circular arrangement accommodates rotation around the central axis without breaking the electrical connection.
2Reliability
If the dryer is held in a stand with fixed directional coupling, then stable power supply is achieved, but users with poor eyesight or limited field of view have difficulty aligning and charging the dryer
Solution Approach 1:
The charging interface is designed with universal compatibility through circularly arranged terminals that accept the dryer regardless of its rotational orientation. The stand can charge the dryer in any angular position, making the charging function universal and eliminating the need for precise directional alignment.
Solution Approach 2:
The electrical terminals are positioned asymmetrically around the cylindrical interface rather than at fixed top/bottom positions. This asymmetric circular arrangement allows the dryer to be inserted and charged from multiple angles and orientations, removing the need for precise directional alignment.
3Ease of operation
If the dryer is designed to rotate freely in the stand, then ease of operation is improved, but maintaining stable electrical connection during rotation becomes difficult
Solution Approach 1:
Different regions of the cylindrical interface have different functional qualities: the outer surface allows rotational movement, while the inner region contains the electrical terminals positioned to maintain contact. This local differentiation enables both rotation freedom and stable electrical connection simultaneously.
Solution Approach 2:
The electrical terminals are pre-positioned in circular arrangements on both the dryer and stand before rotation occurs. This preliminary arrangement ensures that as the dryer rotates, the terminals are already positioned to maintain continuous contact throughout the rotational range, preventing connection instability.
Data Source
AI summary
A drying machine includes a dryer and a stand. The dryer includes a casing having a front opening, a grip including a cylindrical grip body downwardly extended from the casing, and a lower cover covering a lower opening part of the grip body. The stand includes a hollow portion matched up with the grip, and a seating unit in which the dryer is rotatably seated. The grip includes a first electrical terminal positioned in the grip body and a second electrical terminal positioned in the lower cover. The seating unit includes a first contact terminal positioned in the hollow portion and electrically connected to the first electrical terminal, and a second contact terminal positioned in the hollow portion and electrically connected to the second electrical terminal. The first and second contact terminals maintain an electrical connection with the first and second electrical terminals regardless of the rotation of the dryer.