Handheld Massage Device Rotor With Interchangeable Parallel Rollers

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Solution Overview

Problem

Existing handheld massage devices lack adaptability to individual requirements and external conditions, are not sufficiently sturdy, and are not economically efficient.

Innovation Solution

A massage device with a rotor and parallel rollers, adaptable to different settings, allowing for adjustable rotational speed, pressure, and resistance, and compatible with various drive devices, including battery or cord operation, to provide customizable massage therapy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the massage device uses a fixed structure with integrated motor, then the device is sturdy and simple, but it lacks adaptability to individual requirements and external conditions

Engineering Contradiction:
Improveadaptability to individual requirementsVSAvoiddevice structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The massage device is divided into separable components: a handle unit and a massage head unit connected by a connector. The massage head contains replaceable rollers with different configurations (numbers, diameters, arrangements), allowing users to select appropriate rollers for different massage needs and body areas without changing the entire device structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The standardized connector design enables the massage head to be compatible with different drive devices (hand-cranked or motorized), and the interchangeable rollers provide multiple massage functions (rotational, vibrational, tapping) from a single device platform, achieving multi-functionality without increasing overall structural complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If the massage device uses manually operated mechanism, then the device is simple and economical, but it cannot provide consistent rotational speed and pressure control

Engineering Contradiction:
Improveoperational control precisionVSAvoidmechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The device allows dynamic adjustment of operational parameters through interchangeable rollers with different characteristics. Users can select rollers with varying diameters, numbers, and arrangements to achieve different rotational speeds, contact pressures, and massage intensities, providing operational precision without complex control mechanisms.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the massage device uses multiple specialized devices for different massage needs, then adaptability is improved, but the number of parts increases and reliability decreases

Engineering Contradiction:
Improvemassage therapy adaptabilityVSAvoiddevice reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

A single massage device platform with standardized connector accepts various roller types (different numbers, diameters, arrangements) to provide multiple massage therapies. This universal design achieves the adaptability of multiple specialized devices while maintaining a consistent, reliable base structure and reducing the total number of separate devices needed.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3880150B1Handheld massage device
Publication Date: 2026.03.04 L A SNOKONSULT AB
  • EP3880150B1 patent drawingFigure 1~2
  • EP3880150B1 patent drawingFigure 3
  • EP3880150B1 patent drawingFigure 4a~4b

AI summary

There is provided a hand-held massage device (100) based on providing a rotor (115) with a plurality of parallel rollers (111) rotatably and 5 peripherally mounted onto the rotor, such that each roller is rotatable about its respective axis. The massage device has at least one handle (140) rotatably connected with the rotor, and a connector unit (120) arranged for connecting to an external drive device for driving the rotation of the rotor.