Epilation Roller with Independent Movable Blades
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mechanical depilation devices suffer from uneven pinching force distribution, reduced effectiveness in hair removal, and increased wear due to rigidly linked movable blades, leading to broken hairs and rapid regrowth.
Innovation Solution
A depilation head roller design featuring a tubular cage with individually actuated movable blades, each equipped with a return spring for balanced closure and an eccentric roller mechanism for efficient opening and closing, ensuring consistent hair grasp without breaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple movable blades are rigidly linked together by a single shuttle, then the device structure is simplified, but the pinching force distribution becomes uneven and effectiveness reduces
Solution Approach 1:
The patent divides the rigidly linked movable blades into individually independent movable blades, each capable of moving autonomously. This segmentation allows each blade to apply pinching force independently, ensuring uniform force distribution across all blades while removing the need for complex rigid linking mechanisms.
2Ease of manufacture
If a single shuttle drives multiple movable blades, then manufacturing is easier, but wear increases and device robustness decreases
Solution Approach 1:
Each movable blade is equipped with its own return spring and actuation mechanism, eliminating the single-point failure risk of a shared shuttle. This segmentation isolates wear and deformation to individual blades rather than propagating through a rigid linkage system, significantly improving overall device robustness.
3Volume of moving object
If movable blades are actuated by a shared mechanism, then device size is reduced, but closing speed and responsiveness decrease
Solution Approach 1:
Each movable blade has its own return spring positioned adjacent to the blade, enabling direct and immediate actuation. This eliminates the mechanical delays inherent in shared transmission mechanisms, allowing each blade to close rapidly and independently while maintaining a compact overall device footprint.
4Reliability
If pinching force is not evenly distributed, then hair may break instead of being pulled out, but achieving even distribution increases device complexity
Solution Approach 1:
The patent employs individually independent movable blades, each with its own return spring, to ensure that pinching force is naturally distributed evenly across all blades. This segmentation eliminates the need for complex force-balancing mechanisms while guaranteeing that each blade applies consistent, controlled force to prevent hair breakage.
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 solution provides a robust, efficient, and balanced pinching force for effective hair removal with reduced wear and tear, minimizing broken hairs and promoting longer-lasting results.
Implementation Method 1
associated with each movable blade, at least one return spring intended to bring said movable blade into the closed position
Implementation Method 2
an individual opening means secured to said moving blade to drive it in rotation, said opening means being intended to move, for the opening of the moving blade, under the action of the means actuation of pliers
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to an epilation head roller (13) for an epilation device including a housing (1) containing a motor (4), said epilation head roller comprising: a stationary central shaft (20) of axis A, intended to be rotatably connected to the housing; a tubular cage (21) which is intended to be rotated about the central shaft (20) by the motor (4) and which bears tweezers (15), each formed by a stationary blade (25) rigidly connected to the tubular cage (21) and a moving blade (26) that can move between an open position (O) in which the moving blade (26) is at a distance from the stationary blade (25) and a closed position (F) in which the moving blade (26) is in contact with the stationary blade (25); and manoeuvring means (7, 9, 30) for manoeuvring the moving blades (26) between the open (O) and closed (F) positions during the rotation of the tubular cage (21) about the central shaft (20). According to the invention, the manoeuvring means (7, 9, 30) comprise: associated with each moving blade (26), at least one return spring (7) intended to return the moving blade (26) to the closed position (F); and, associated with each moving blade (26), an individual opening means (9) solidly connected to the moving blade (26) in order to rotate same, said opening means (9) being intended to move, under the action of tweezer actuation means (30), in order to open the moving blade (26).