Motorized Hair Curling Iron with Sliding Barrel and Gating Coupling
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Solution Overview
Problem
Existing hand-held electric curling irons face issues with ergonomics, ease of use, and manufacturing costs, particularly due to a narrow slot portion that complicates hair feeding and may result in incomplete styling, and lack of symmetry making them less user-friendly for both left- and right-handed individuals.
Innovation Solution
A curling iron design featuring a barrel that abuts the body in the closed position with a gating coupling allowing sliding or pivoting movement, an operating lever for power control, a temperature controller, and a winder mechanism with feedback for maintaining optimal temperature and angular displacement, along with a handle-aligned slot portion for improved ergonomics and reduced manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the slot portion is made narrow to prevent fingers from entering the heated chamber, then safety is improved, but ease of operation deteriorates as hair must be fed along a complex path
Solution Approach 1:
The patent introduces an intermediary mechanism (the movable jaw with finger retention features) that mediates between the narrow slot (safety requirement) and hair feeding (operation requirement). The intermediary guides hair through the narrow slot while preventing finger access, thus resolving the contradiction between safety and ease of operation.
Solution Approach 2:
The patent replaces the complex mechanical path of hair feeding with a simplified system where the movable jaw actively guides and pushes hair into the slot. This substitution of passive mechanical path with active mechanical guidance resolves the contradiction by making the narrow slot easier to use without compromising safety.
2Reliability
If the second jaw blocks access to the slot portion to ensure hair retention, then reliability is improved, but ease of operation deteriorates due to complex hair feeding path
Solution Approach 1:
The patent applies dynamics by making the second jaw movable rather than fixed. The jaw moves between blocking and non-blocking positions, dynamically adapting to ensure hair retention while facilitating easy hair feeding. This dynamic behavior resolves the contradiction between reliability and ease of operation.
Solution Approach 2:
The movable jaw with finger retention features performs self-service by automatically guiding and retaining hair without requiring complex user manipulation. The jaw's movement and retention features work together to ensure hair is properly fed and retained, resolving the contradiction between reliability and ease of operation.
3Ease of operation
If the appliance is designed with asymmetric structure to optimize unidirectional use, then ease of operation is improved for one hand, but adaptability deteriorates for both left- and right-handed users
Solution Approach 1:
The patent applies asymmetry in a controlled manner where the asymmetric features are positioned to work effectively for both left-handed and right-handed users. The asymmetric structure optimizes ease of operation while maintaining adaptability through strategic placement of asymmetric elements, resolving the contradiction between ease of use and handedness adaptability.
4Ease of operation
If the barrel is positioned away from the body to allow access, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent merges the barrel positioning with the body structure through the gating coupling mechanism. The barrel is integrated into the body in a way that allows necessary access while minimizing structural complexity. This merging resolves the contradiction between accessibility and device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances usability for both hands, reduces hair strand loss during styling, and minimizes manufacturing costs while ensuring efficient and effective curling.
Implementation Method 1
a winder for winding the lock of hair about the barrel, and feedback means connected to the controller for indicating that the winder is in operation, when power is supplied to the curling iron the controller actuates the element to maintain the element in the standby temperature range
Data Source
Figure 1
Figure 2a~2b
Figure 3~4
AI summary
A curling iron (1, 401) motorised to wind a lock of hair (20) about a barrel (16, 116) offers improved ergonomics by providing a body (11, 411) that surrounds the barrel (16) to form a hair-receiving space (19) accessed through an opening (18) in the body (11, 411). The opening (18) provides a passage for the hair and comprises a circumferential portion (18a) extending about a distal end (16b) of the barrel (16, 116) and a slot portion (18b) extending axially from the circumferential portion (18a) toward the proximal end (16a). The slot portion (18b) is disposed at a longitudinal end of the curling iron (1) and is configured for receiving a lock of hair (20) elongated parallel to the slot and pushed in crosswise. A resilient finger may mounted to the body (11, 411) projects to normally close the slot portion (18b) and hold the lock of hair (20) in the hair-receiving space (19). A gating coupling (90, 91) may connect the barrel (16, 116) to the body (10, 110, 210, 310) to provide for relative movement between the barrel (16, 116) and the body (10, 110, 210, 310) between open and closed position, for inserting and releasing a lock of hair (20) respectively.