Adjustable Massage Depth via Eccentric Slider Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional fascia guns lack the ability to adjust the depth of movement of the massage head, which is necessary due to variations in the thickness of the fascial layer across different body sections, limiting their effectiveness in providing customized massage therapy.
Innovation Solution
A massage device with an adjustable massage depth is achieved through a mechanism that includes an eccentric wheel, a slider, a connecting rod, and a movable seat, where the slider is radially slidable and the movable seat is axially movable, allowing the eccentric radius to be adjusted, thereby changing the movement depth of the massage head. This is facilitated by a threaded engagement system that allows manual or motor-driven adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional fascia gun with a fixed eccentric wheel is used, then the structure is simple and easy to manufacture, but the massage depth cannot be adjusted to accommodate different body sections
Solution Approach 1:
The patent applies the dynamics principle by making the eccentric wheel adjustable rather than fixed. The movable seat allows the eccentric wheel to be positioned at different locations along the driving shaft, changing the eccentric radius dynamically. This enables the massage depth to be adjusted according to different body sections while maintaining a relatively simple overall structure that does not require completely redesigning the mechanism.
Solution Approach 2:
The patent implements the nested doll principle by placing the movable seat within the driver assembly, which contains the driving shaft and eccentric wheel. The slider is nested within the movable seat, allowing radial movement. This nested arrangement allows multiple functional components to be compactly integrated, adding adjustment capability without proportionally increasing device complexity.
2Length of moving object
If the eccentric radius is increased to increase massage depth, then deeper muscle penetration is achieved, but the device size and weight increase
Solution Approach 1:
Instead of using a larger fixed eccentric wheel that would permanently increase device weight, the patent uses a movable seat that allows the existing eccentric wheel to be repositioned along the driving shaft. This enables variable massage depth using the same component, avoiding the need to increase device weight while achieving deeper muscle penetration when needed.
Solution Approach 2:
The patent changes the parameter of eccentric radius by adjusting the position of the movable seat along the driving shaft. By varying this parameter, the massage depth can be adjusted without changing the physical size or weight of the device components. The same eccentric wheel produces different effective radii based on its position relative to the driving shaft center.
3Ease of manufacture
If manual adjustment of the movable seat is used, then the structure remains simple without requiring additional motors, but the adjustment precision may be limited
Solution Approach 1:
The patent replaces complex electronic adjustment systems with a purely mechanical thread-based adjustment mechanism. The threaded connection between the movable seat and driver allows precise manual adjustment through simple rotational motion, achieving good adjustment precision without requiring additional motors, sensors, or electronic control systems, thus maintaining manufacturing simplicity.
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 flexible and customizable massage depth adjustment, accommodating different body areas and enhancing the device's ability to provide effective muscle relaxation and recovery by allowing users to tailor the massage amplitude and depth according to specific needs.
Implementation Method 1
the massaging device further comprises two thread parts either provided with external threads or internal threads and engaged with each other; due to a threaded engagement therebetween, one thread part is rotatable and the other thread part is linearly movable
Implementation Method 2
the movable seat has an inclined protrusion fitted in and slidable along the inclined groove of the slider, whereby an axial movement of the movable seat will cause an radial sliding of the slider due to an engagement between the inclined protrusion and the inclined groove
Implementation Method 3
an eccentric wheel with a shaft hole; a driver with a driving shaft that passes in the shaft hole of the eccentric wheel to drive the eccentric wheel rotating
Data Source
AI summary
The present invention provides a massage device, comprising: a massaging head; an eccentric wheel with a shaft hole; a driver with a driving shaft that passes in the shaft hole of the eccentric wheel to drive the eccentric wheel rotating; a slider slidably installed in the eccentric wheel; a connecting rod connected to the slider and the massage head whereby the driving shaft drives the slider rotating to take the massaging head moving back and forth by the connecting rod for beating a user' muscle; and a movable seat with a shaft hole for the driving shaft passing through the shaft hole; wherein the slider is radially slidable relative the shaft hole to move close to or away from the driving shaft so as to change an eccentric radium of the eccentric wheel; and accordingly, a movement depth of the massaging head is adjustable.