Floating Rotation Structure for Personal Massager
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Solution Overview
Problem
Personal care devices and massagers have low flexibility and poor user experience due to direct contact with the skin, leading to soreness and discomfort during use.
Innovation Solution
A floating rotating structure is introduced, comprising a first hinge, a second hinge, and an elastic member, allowing for relative rotation and self-adaptation to skin contours through an elastic restoring force, enhancing flexibility and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blade head or massager head directly contacts the skin, then the device can perform shaving or massaging function, but the user experiences soreness and discomfort due to lack of flexibility
Solution Approach 1:
The patent applies the dynamics principle by introducing a floating rotating structure with hinges that allow the blade head or massager head to rotate and adjust its position dynamically. This enables the device to adapt to different skin contours and curves, transforming a static direct-contact design into a dynamic self-adjusting system that maintains optimal contact without causing soreness
Solution Approach 2:
The patent employs parameter changes by using an elastic member that can extend and contract to adjust the distance and angle between the rotating component and the skin surface. This elastic mechanism changes the geometric parameters (distance, angle) of the contacting element relative to the skin, allowing the device to conform to various body shapes and contours while maintaining comfortable pressure
2Stability of the object's composition
If a fixed limiting structure is arranged to prevent relative rotation between hinges, then the structural stability is improved, but the flexibility and adaptability to skin contours are deteriorated
Solution Approach 1:
The patent resolves this contradiction by making the limiting structure dynamic rather than fixed. The elastic member can extend and contract based on the degree of rotation, allowing the limiting structure to adapt between providing strong rotational constraint (when needed for stability) and allowing movement (when needed for flexibility). This dynamic characteristic enables the system to maintain structural stability while preserving the ability to adapt to skin contours
Solution Approach 2:
The patent applies parameter changes by using the elastic member to vary the constraint parameter of the limiting structure. When the elastic member is in a contracted state, it provides strong rotational limitation for stability; when extended, it allows greater rotation for flexibility. This parameter variation enables the same structure to serve both stability and adaptability requirements
3Adaptability or versatility
If the elastic member is compressed to enable rotation, then the adaptability to skin curves is improved, but the structural complexity increases
Solution Approach 1:
The patent applies the flexible shells and thin films principle by using an elastic member (such as a spring or elastomer) that can be compressed and extended. This elastic component provides the necessary flexibility and self-adaptation to skin contours while maintaining a relatively simple overall structure. The elastic member's ability to deform and recover enables the rotating mechanism to conform to various body shapes without requiring complex actuation systems
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 floating rotating structure improves user experience by enabling the device to adapt to skin curves, reducing soreness and enhancing the comfort of shaving or massaging, allowing for smoother operation and better contact with the skin surface.
Implementation Method 1
an elastic member penetrates the first matching groove and the first central hole of the second hinge, the two ends of the elastic member can be respectively pressed against the two external components connected to the first hinge and the second hinge respectively
Data Source
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AI summary
A floating rotating structure and personal care device, massager, the floating rotating structure comprises a first hinge, the first hinge (500) has a penetrating first matching groove(510); a second hinge (600), the top of the second hinge has a matching portion(610), and a limiting structure (220) provided between the first matching groove (510) and the matching portion (610) for preventing relative rotation is separable along the central axis of the first matching groove (510), the matching portion (610) is provided with a first central hole that penetrates to the bottom of the second hinge; an elastic member (800), the elastic member penetrates the first matching groove (510) and the first central hole of the second hinge (600), and the two ends of the elastic member (800) can be respectively pressed against the two external components connected to the first hinge (500) and the second hinge (600) respectively. In the above structure, when the external force is applied, the limiting structure separates, and the elastic member is compressed so that the first hinge (500) drives the external components to rotate by 360°. When the external force is reduced, the elastic member elastically returns to move upwards, thereby achieving up and down floating.