Vibrating Massage Roller Uniform Vibration Distribution

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Solution Overview

Problem

Existing massage rollers with eccentric weights rotating about an axle fail to evenly distribute vibrations along their length, resulting in 'weak spots' or 'dead zones' due to localized vibrational transmission, which is exacerbated by the use of multiple motors that increase cost and susceptibility to breakage.

Innovation Solution

A vibratory massage roller design featuring a single motor with strategically positioned eccentric weights and supports along a shaft, synchronized for maximum vibrational efficiency, ensuring uniform vibration amplitude across the roller's length, and optionally using reciprocating pistons or beveled gears for enhanced vibration distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single motor with eccentric weights is used, then device complexity is reduced, but vibrational uniformity along the roller length deteriorates

Engineering Contradiction:

Improvenumber of motorsVSAvoidvibrational uniformity

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The roller is divided into multiple sections with supports positioned at specific locations along the shaft. These supports segment the roller structure into distinct vibrational zones, allowing each section to be optimized for uniform vibration distribution. The segmentation enables a single motor to effectively drive the entire roller length by creating multiple vibration nodes that distribute energy evenly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Eccentric weights are positioned at specific locations rather than uniformly distributed, creating localized vibration sources that compensate for natural vibration decay. The supports are strategically placed to provide structural reinforcement at critical points, ensuring uniform vibration amplitude across different sections of the roller despite using a single motor.

Inventive Principle:

Principle #3Local quality

2Manufacturing precision

If multiple motors are used to improve vibrational uniformity, then vibrational uniformity improves, but device complexity and reliability worsen

Engineering Contradiction:

Improvevibrational uniformityVSAvoidnumber of motors

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

Multiple eccentric weights are combined and driven by a single motor through a common shaft. This merging approach maintains the vibrational uniformity benefits of multiple vibration sources while eliminating the complexity and reliability issues of multiple independent motors. The single motor drives all eccentric weights simultaneously, creating coordinated vibration patterns along the roller length.

Inventive Principle:

Principle #5Merging (Combining)

3Manufacturing precision

If multiple motors are used to improve vibrational uniformity, then vibrational uniformity improves, but reliability worsens due to increased breakage susceptibility

Engineering Contradiction:

Improvevibrational uniformityVSAvoidsusceptibility to breakage

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The system merges multiple vibration-generating eccentric weights onto a single motor-driven shaft, reducing the number of independent motor components from multiple to one. This consolidation eliminates the reliability issues associated with multiple motors while maintaining uniform vibration distribution through the coordinated rotation of multiple eccentric masses.

Inventive Principle:

Principle #5Merging (Combining)

4Manufacturing precision

If eccentric weights are radially distributed around the shaft, then vibrational uniformity improves, but motor torque increases leading to motor damage

Engineering Contradiction:

Improvevibrational uniformityVSAvoidmotor torque

Core Design Contradiction:

Manufacturing precisionVSForce

Solution Approach 1:

Eccentric weights are positioned asymmetrically at specific angular locations around the shaft rather than being uniformly radially distributed. This asymmetric arrangement creates the necessary vibration patterns for uniformity while minimizing the peak torque demands on the motor. The asymmetric positioning allows for optimized force distribution that reduces mechanical stress on the motor.

Inventive Principle:

Principle #4Asymmetry

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 more even distribution of vibrations along the roller's length, reducing the occurrence of 'dead' or 'weak' spots, while minimizing the number of parts and potential for malfunction, making the device more durable and easier to maintain.

Implementation Method 1

a motor in the housing that induces a vibratory amplitude to the surface

Methodology Applied

Scientific EffectEccentric rotation: Eccentric

Implementation Method 2

the power source is energized to induce a vibratory amplitude to the surface that varies less than 30 amplitude percent across the central 70 percent of the length

Methodology Applied

Scientific EffectVibration: Vibration

Data Source

PatentUS10285901B2Vibrating massage roller

Publication Date: 2019.05.14 HEALTH E VIBRATIONS

AI summary

A process of massaging a subject is provided that includes the provision of a vibratory massage roller having a casing with a casing surface extending over a length of the vibratory roller. A motor in included in the housing and is electrically coupled to a power source. The power source is energized to induce a vibratory amplitude to the surface that varies less than 30 amplitude percent across the central 70 percent of the length. The massage roller is contacted with the subject to massage the subject.