Pivot Mechanism for Hair Straightener Heating Plates
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Solution Overview
Problem
Conventional hair straighteners with rubber-suspended heating plates face inefficiencies due to suboptimal heat transfer and gliding, as the plates do not effectively follow hair curves and are prone to undesired bending.
Innovation Solution
The introduction of a pivot mechanism with a virtual pivot axis that allows heating plates to tilt and adjust to hair shapes, combined with a bias mechanism like a spring for balanced operation, enabling better heat distribution and controlled gliding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rubber suspension is used to allow heating plates to flex, then the plates can adapt to hair shapes, but the plates do not optimally follow the hair and cause inefficiencies in heat transfer and gliding
Solution Approach 1:
The heating plate is designed with a pivot mechanism that allows it to rotate dynamically about a pivot axis, enabling the plate to automatically adjust its angle and follow the contours of the hair. This dynamic adaptation replaces the static rubber suspension system, allowing the plate to maintain optimal contact with the hair surface while moving through it, thereby improving both adaptability and productivity.
2Ease of operation
If heating plates are force balanced via rubbers, then the plates can flex when hair is in between, but the plates do not optimally follow the hair and cause pulling and drag
Solution Approach 1:
The pivot mechanism enables the heating plate to rotate freely about a pivot axis, creating a dynamic system that automatically adjusts to the hair's shape and position. This eliminates the need for force-balanced rubber suspension, allowing the plate to follow the hair's contours without exerting excessive pulling force or drag, thereby improving ease of operation while reducing harmful forces.
Solution Approach 2:
The pivot axis acts as an intermediary element between the heating plate and the actuation mechanism, allowing the plate to rotate and adapt to hair shapes without direct mechanical constraints. This intermediary enables smooth, constraint-free movement that reduces pulling and drag on the hair while maintaining plate flexibility.
3Device complexity
If conventional rubber suspension is used, then the heating plates can be simple in structure, but the plates cause inefficiencies due to undesired bending and suboptimal heat transfer
Solution Approach 1:
The pivot mechanism provides a controlled rotational degree of freedom that allows the heating plate to dynamically adapt to hair shapes while maintaining stable and reliable operation. This dynamic design improves heat transfer consistency by ensuring optimal plate-to-hair contact throughout the styling process, while the pivot axis provides a stable reference point that prevents undesired bending.
Solution Approach 2:
The pivot mechanism changes the operational parameter of the heating plate from a fixed, force-balanced position to a dynamically adjustable angle. This parameter change allows the plate to maintain optimal orientation relative to the hair surface, improving heat transfer reliability and preventing undesired bending while keeping the overall structure relatively simple.
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
This design enhances heat transfer and gliding efficiency by allowing the heating plates to follow hair curves more accurately, reducing drag and stick slip, and providing a more comfortable styling experience.
Implementation Method 1
a resilient member like some spring biases the heating plate to a neutral position
Implementation Method 2
enhances heat transfer
Data Source
AI summary
In a hair straightener comprising an elongate straightener arm (A) having a heating plate (H), the invention provides a pivot mechanism (2) for supporting the heating plate (H) in a pivotable manner around a pivot axis (P1) in a longitudinal direction of the elongate straightener arm (A). Preferably, the pivot axis (P1) is at a heating surface of the heating plate (H), or between a first heating plate of a first straightener arm and a second heating plate of a second straightener arm when the first straightener arm and the second straightener arm are in a relative position arranged for clamping hair. Advantageously, a bias mechanism (4) (e.g. a resilient member like some spring) biases the heating plate (H) to a neutral position.