Variable Stroke Percussion Massage Device with Cam Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional percussion massage devices have a fixed stroke length, requiring users to own multiple devices for varying massage intensities, as they cannot easily adjust the stroke length to provide both gentle and vigorous massages.
Innovation Solution
A variable stroke percussion massage device with a pivot joint and cam mechanism allows the stroke arm to adjust stroke length by reversing motor direction, enabling two different stroke lengths (6-14 mm and 16-24 mm) through a spiral cam and pin gear follower system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed stroke length is used in conventional percussion massage devices, then the device structure is simple and reliable, but the user cannot adjust the massage intensity and must own multiple devices for different needs
Solution Approach 1:
The patent applies the dynamics principle by making the stroke length adjustable rather than fixed. The cam mechanism allows the stroke arm to pivot between different positions, dynamically changing the stroke length from a first position to a second position. This enables the device to adapt to different user needs while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent implements parameter changes by modifying the stroke length parameter through the cam mechanism. By changing the position of the stroke arm relative to the massage head (from first position to second position), the stroke length parameter is adjusted, allowing users to switch between gentle and vigorous massage modes without changing the entire device.
2Adaptability or versatility
If multiple devices are owned for different massage intensities, then the desired stroke lengths are available, but the cost and storage requirements increase
Solution Approach 1:
The patent applies the universality principle by designing a single percussion massage device that can perform multiple functions - providing both gentle massage (first stroke length) and vigorous massage (second stroke length) through the adjustable cam mechanism. This eliminates the need for users to own multiple separate devices for different massage needs.
Solution Approach 2:
The patent merges the functionality of multiple devices into one by integrating the adjustable stroke length mechanism into a single unit. The cam mechanism combines different stroke length capabilities within one device structure, allowing users to access various massage intensities without requiring separate devices.
3Ease of operation
If an adjustable stroke mechanism is added to provide variable stroke lengths, then user convenience is improved, but the device structure becomes more complex
Solution Approach 1:
The cam mechanism provides a dynamic adjustment system where the stroke arm can pivot between defined positions. This creates a simple yet effective way to adjust stroke length without requiring complex electronic controls or multiple components, maintaining ease of operation while adding minimal structural complexity.
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
Enables a single device to provide adjustable massage intensities, allowing users to switch between gentle and vigorous massages quickly and easily, enhancing user convenience and versatility.
Implementation Method 1
A cam has a cam slot formed into the cam such that the pin fits into the cam slot. The cam slot has a length, where the pin is movable from a first end of the cam slot to a second end of the cam slot
Implementation Method 2
a stroke arm having a first end connected to a percussion massage head at a pivot joint, permitting the stroke arm to pivot from side-to-side relative to the percussion massage head
Implementation Method 3
A motor is operable to rotate the cam about the rotation axis. The motor can reverse direction to change the stroke distance along the vibration axis
Data Source
AI summary
An adjustable stroke percussion massage device includes a stroke arm having a first end connected to a percussion massage head. A pin extends outward at a second end of the stroke arm. A cam has a cam slot formed into the cam such that the pin fits into the cam slot. The cam slot has a length, where the pin is movable from a first end of the cam slot to a second end of the cam slot, where the pin is a first distance from a rotation axis of the cam when positioned at the first end of the cam slot, and the pin is a second distance from the rotation axis of the cam when positioned at the second end of the cam slot. A motor is operable to rotate the cam about the rotation axis, moving the stroke arm along a vibration axis.