Percussive Therapy Variable Amplitude Assembly for Adjustable Stroke
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Percussive massage devices typically only offer a single reciprocating amplitude, limiting their ability to provide different levels or types of massage, as varying amplitudes can affect the massage experience.
Innovation Solution
A percussive therapy device with a variable amplitude assembly, including an eccentric weight member and a movable member, allows the amplitude of the reciprocating motion to be adjusted by changing the rotation direction of the motor shaft, enabling the user to select between different stroke ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single reciprocating amplitude is used in percussive massage devices, then the device structure remains simple, but the device cannot provide different levels or types of massage
Solution Approach 1:
The patent implements a movable member that can shift between different positions to dynamically change the reciprocating amplitude. The movable member is positioned at different locations along the push rod assembly, allowing the device to transition between a first amplitude when the movable member is at a first position and a second amplitude when the movable member is at a second position, thus providing adaptability without requiring multiple complete mechanisms
Solution Approach 2:
The single push rod assembly serves multiple functions by accommodating the movable member at different positions. The same basic mechanism (motor, push rod, movable member) provides both the first reciprocating amplitude and the second reciprocating amplitude, making the device multi-functional for different massage needs without requiring separate mechanisms for each amplitude
2Ease of operation
If the amplitude is made user-adjustable with multiple ranges, then different massage needs can be accommodated, but the mechanism becomes more complex
Solution Approach 1:
The movable member is designed to be repositionable along the push rod assembly, allowing users to adjust between different amplitude ranges. The movable member can be positioned at a first position for a first reciprocating amplitude or at a second position for a second reciprocating amplitude, providing user adjustability while maintaining a relatively simple mechanical structure
Solution Approach 2:
The movable member acts as an intermediary element between the motor-driven push rod and the massage attachment. By positioning the movable member at different locations, it mediates the transmission of motion to produce different amplitude outputs, enabling user adjustment without requiring complex control 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 device provides a customizable massage experience by allowing users to adjust the amplitude, accommodating different needs and preferences through a simple and effective mechanism that converts rotating motion into variable reciprocating motion.
Implementation Method 1
an electrical source, a motor positioned in the housing
Implementation Method 2
a variable amplitude assembly, including an eccentric weight member and a movable member
Implementation Method 3
a push rod assembly operatively connected to the motor and configured to provide reciprocating motion
Data Source
AI summary
A percussive therapy device that includes a housing, an electrical source, a motor positioned in the housing, a switch for activating the motor, a push rod assembly operatively connected to the motor and configured to provide reciprocating motion in response to activation of the motor, and a massage attachment secured to a distal end of the push rod assembly. The reciprocating motion of the push rod assembly has a user-adjustable amplitude.