Hair Styling Tool Handle With Replaceable Torsion Spring
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Solution Overview
Problem
Existing curling irons require difficult and cumbersome replacement of torsion springs, often leading to user frustration and discarding of the tool when the spring breaks.
Innovation Solution
A hair styling tool design that allows for the torsion spring to be housed in the handle portion, secured by a spring door that is releasably connected, enabling easy removal and replacement without mechanical attachment to the handle portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the torsion spring is mechanically connected to the handle portion, then the spring is securely held in place, but the spring becomes difficult to remove and replace requiring disassembly of multiple components
Solution Approach 1:
The patent divides the spring retention system into two independent parts: the handle portion and the removable spring door. The spring door can be detached without disassembling the handle, allowing the torsion spring to be accessed and replaced independently. This segmentation resolves the contradiction by enabling easy spring replacement while maintaining secure spring retention when the door is closed.
Solution Approach 2:
The torsion spring is extracted from direct mechanical connection to the handle portion and instead is retained by the removable spring door. This extraction allows the spring to be easily removed by simply taking off the spring door, eliminating the need to disassemble pins, fasteners, and other components while still maintaining reliable spring retention during normal operation.
2Ease of repair
If the spring door is removably connected to the handle portion, then the torsion spring can be easily accessed and replaced, but the structural integrity and security of the spring may be compromised
Solution Approach 1:
The spring door is pre-configured with a retaining mechanism that secures the torsion spring in place before use. The door is designed to snap into position and hold the spring securely during normal operation, then can be easily removed when replacement is needed. This preliminary configuration ensures reliable spring retention without compromising the ease of replacement.
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
Facilitates simple and efficient replacement of the torsion spring, reducing the need for tool disassembly and minimizing waste by allowing users to maintain the curling iron.
Implementation Method 1
a torsion spring is provided to pivot the clamp from an open position to a closed position where the clamp is held against the barrel
Data Source
AI summary
A hair styling tool or curling iron includes a handle portion and a styling portion. The handle portion houses a torsion spring. The styling portion includes a hair engaging member adapted to be biased toward the styling portion by the torsion spring. A spring door is releasably and/or removably connected to the handle portion and is configured to cover and at least partially secure the torsion spring within the handle portion. The torsion spring is not mechanically connected to the handle portion so that releasing and/or removing of the spring door from the handle portion allows for removal and replacement of the torsion spring.