Multi-Axis Rotating Brush Head for Adaptive Skin Pressure Distribution
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Solution Overview
Problem
Existing brush heads for body care devices struggle to adjust pressure forces of bristles to accommodate the varying sensitivity and needs of different areas of the skin surface, failing to address the technical problem of existing technologies in achieving proper force distribution on the skin surface.
Innovation Solution
A brush head with a system of bristles, capable of rotating about the system of the skin surface, a system of the brush head is designed to rotate about the axis, with a carrier that is rotatable about the axis and pivotable about a second axis perpendicular to the first, allowing for a more flexible distribution of pressure forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the brush head uses a fixed carrier structure, then the manufacturing is simple, but the pressure force distribution on different skin areas cannot be adjusted
Solution Approach 1:
The carrier is divided into multiple independent carrier parts (first carrier part, second carrier part, etc.), each capable of independent rotation about its own axis. This segmentation allows each bristle group to independently adjust its orientation and pressure distribution, enabling adaptation to different skin areas while maintaining a relatively simple overall structure.
Solution Approach 2:
The carrier parts are designed to be rotatable about their respective axes, transforming the static fixed structure into a dynamic adjustable structure. This allows the brush head to adapt its pressure force distribution by rotating the appropriate carrier parts during use, accommodating different skin sensitivities without requiring a completely complex mechanism.
2Adaptability or versatility
If the brush head rotates only about the first axis, then the rotation control is simple, but it cannot properly treat different areas of the skin surface with varying pressure
Solution Approach 1:
The rotation function is segmented across multiple axes: the entire brush head rotates about the first axis, while individual carrier parts rotate about their own second axes. This segmentation of rotational degrees of freedom allows targeted adjustment of specific bristle groups for different skin areas without requiring complete redesign of the entire rotation mechanism.
Solution Approach 2:
The invention adds a second rotational dimension by allowing carrier parts to rotate about axes perpendicular to the main first axis. This dimensional addition enables the brush head to accommodate three-dimensional skin surface variations and apply appropriate pressure forces to different areas while building upon the existing single-axis rotation capability.
3Ease of operation
If all bristles are fixed to a single carrier, then the structure is simple, but the force distribution cannot be independently controlled for different bristle groups
Solution Approach 1:
The bristles are divided into multiple bristle groups, with each group fixed to a separate carrier part. This segmentation allows independent control of force distribution for each bristle group by rotating its corresponding carrier part, enabling precise adjustment for different skin areas while maintaining simple fixed connections within each group.
Solution Approach 2:
Each carrier part and its associated bristle group can be independently adjusted to provide locally optimized force distribution. This allows different regions of the brush head to have different operational characteristics, with each carrier part rotated to the appropriate angle for treating specific skin areas, rather than requiring uniform force distribution across all bristles.
Data Source
Figure 1~2
Figure 3(I)~3(II)
Figure 4(I)~4(II)
AI summary
The present invention relates to a brush head (10, 10a, 10b, 10c) for use with a body care device (100), comprising a plurality of bristles (22, 22a-22e), a carrier (16) for fixedly carrying the plurality of bristles (22, 22a-22e), and connection means for connecting the carrier (16) to a housing (50) of the body care device (100) defining a first axis (14), so that, when the brush head is connected to the housing (50), the carrier (16) is rotatable about the first axis (14) and pivotable about a second axis (20) perpendicular to the first axis (14) with respect to the housing (50), wherein the carrier (16) comprises a plurality of carrier parts (17), each fixedly carrying a corresponding one of a plurality of bristle groups (26, 28, 30), and wherein at least one of the plurality of carrier parts (17) comprises a shaft defining a third axis (40, 42, 44) about which the corresponding bristle group (26, 28, 30) is rotatable.