Hand And Forearm Massage Rollers With Repeatable Force Adjustment
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Solution Overview
Problem
Existing portable therapeutic massage devices for hands and forearms lack the ability to easily reconfigure rollers for different treatments, provide repeatable and precise force adjustment, and offer a modular design for treating various hand and forearm medical problems.
Innovation Solution
A portable hand and forearm massaging device with a rotatable vertically fixed roller and a rotatable vertically slidable spring force biased roller, allowing for easy roller replacement and adjustment of massaging force via a cam mechanism, enabling precise and repeatable therapeutic massage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed spring force mechanism is used in existing massagers, then the structure is simple, but the massaging force cannot be adjusted to predetermined levels required for different therapeutic regimes
Solution Approach 1:
The patent implements a dynamic force adjustment mechanism where a movable roller can be positioned at different locations along an arcuate path. This allows the spring force to be adjusted to predetermined levels corresponding to different therapeutic needs. The movable roller is constrained to follow a specific arcuate trajectory, enabling repeatable force settings without requiring complex electronic controls.
Solution Approach 2:
The massaging device is divided into separate functional components: a fixed roller, a movable roller with independent positioning capability, and a spring mechanism. This segmentation allows the force adjustment function to be isolated and optimized independently, reducing overall system complexity while improving adaptability.
2Adaptability or versatility
If rollers are made fixed and integrated into the device, then the structure is stable, but replacing rollers for different treatments is time-consuming and complicated
Solution Approach 1:
The roller mounting system is designed to be dynamically reconfigurable. Rollers can be easily removed and replaced by users without requiring tools or complex disassembly procedures. The mounting mechanism maintains stability during use but allows quick replacement when needed, addressing both structural stability and user adaptability needs.
3Ease of operation
If individual screws are used for roller adjustment as in McClenathen's design, then the structure is simple, but the pressure forces become unbalanced and adjustment is cumbersome
Solution Approach 1:
The spring mechanism serves multiple functions simultaneously: it provides the massaging force, enables adjustable pressure levels, and ensures balanced force distribution across both rollers. By using a single spring mechanism that acts on both rollers through the arcuate path constraint, the system achieves force balance without requiring individual adjustment screws for each roller.
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 and effective therapeutic massage for hand and forearm injuries, such as carpal tunnel and tennis elbow, by allowing users to easily change rollers and adjust force settings, ensuring consistent treatment outcomes.
Implementation Method 1
one rotatable vertically slidable spring force biased roller
Implementation Method 2
spring force biased roller
Data Source
AI summary
A hand and forearm therapeutic massage system which includes a frame that supports easily exchangeable lower fixed roller and an upper vertically movable roller. When a person inserts his or her hand and forearm between the two rollers, the upper roller provides precisely adjustable downward force thus providing a massaging action on the user's hand or forearm. A removable side panel provides easy and quick access for removal and insertion of rollers for a specific diagnosis. A cam mechanism and attached knob located in the upper portion of the frame can adjust the spring pressure exerted on the upper roller. The cam adjustment knob protrudes beyond the side wall of the hollow frame and includes an indicating arrow that points to indices affixed to the side of the hollow frame to allow a person to accurately know the pressure setting he or she is on.