Segmented Roller Design for Epilator Head Manufacturing
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Solution Overview
Problem
Existing hair removal devices with rotating rollers are costly and complex to manufacture due to the large number of small, precisely assembled parts, which complicates their production and increases costs.
Innovation Solution
A hair removal head roller design featuring a main body formed by a stack of identical central and lateral roller elements, each defining windows with fixed jaws and movable tweezers, simplifying the design and assembly process while enhancing robustness and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of small parts are used in the roller design, then the hair removal function is improved, but the manufacturing cost and complexity increase
Solution Approach 1:
The roller is divided into multiple identical modular elements (first lateral element, second lateral element, and multiple central elements) that can be stacked along the rotation axis. Each element contains a subset of tweezers and defines certain windows, allowing the roller to be constructed from repeated units that simplify manufacturing while maintaining the required number of hair removal elements.
Solution Approach 2:
Multiple functional components are merged into integrated elements. Each modular element combines tweezers, windows, and structural components into a single unit that performs multiple functions simultaneously. The lateral and central elements work together as an integrated assembly, reducing the total number of separate parts while maintaining hair removal effectiveness.
2Reliability
If many small parts are assembled precisely, then the hair removal effectiveness is improved, but the manufacturing precision requirements increase
Solution Approach 1:
By segmenting the roller into identical modular elements, the manufacturing precision requirement is reduced at the component level. Each element can be manufactured and tested independently with standard tolerances, and then assembled through simple stacking along the rotation axis, avoiding the need for complex precise alignment of many small parts.
Solution Approach 2:
The use of multiple identical central elements and symmetric lateral elements creates homogeneity in the roller design. All central elements are the same, and the lateral elements are mirror images, which simplifies manufacturing processes and assembly procedures while ensuring consistent hair removal performance across the entire roller.
3Reliability
If a complex roller design is used, then the hair removal capability is improved, but the device robustness decreases
Solution Approach 1:
The design merges multiple tweezers and functional elements into robust modular units that are structurally integrated. The lateral and central elements form a strong stacked assembly that is mechanically robust while maintaining the complexity of multiple hair removal elements. This modular integration strengthens the overall structure compared to having many separate small parts.
Data Source
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AI summary
- Epilator head roller for epilator, epilator head and epilator equipped with such a roller. - The invention relates to a hair removal head roller (1) for a hair removal device, which roller (1) extends along an axis of rotation (A-A') and comprises a main body formed by a stack, along the axis of rotation (A-A'), of two lateral roller elements (3A, 3B) and several central roller elements (4A, 4B, 4C) interposed between the lateral roller elements (3A, 3B), each of the lateral (3A, 3B) and central (4A, 4B, 4C) roller elements defining, by complementarity with the immediately adjacent roller element, windows (9) of a fixed predetermined size, each of the windows (9) carrying a fixed jaw (10) and being intended to receive a movable jaw (11) to form a hair removal clamp (12) by cooperation of the movable jaw (11) with the fixed jaw (10), the central roller elements (4A, 4B, 4C) being all identical to each other.- Epilator head rollers for epilators, epilator heads and epilators. - Figure for the summary: Figure 1.