Massage Head Flap Pivoting via Rotary Cam
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Solution Overview
Problem
Existing massage equipment is complex and unsatisfactory in terms of results, particularly in achieving a continuous subdermal-tissue-type massage with a large amplitude of angular motion and reduced bulk, which affects user-friendliness and efficiency.
Innovation Solution
A massage head with two active members, including a flap capable of pivoting, driven by a motorized rotary cam with a cam track, allowing for increased angular motion and adjustable torque, and optionally integrated with a suction or depression source for varying skinfold formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a motor-driven rotary cam is used to drive the flap, then the amplitude of angular motion is increased, but the device complexity increases
Solution Approach 1:
The motor (28) and reduction gear (27) are integrated within the cam (8) itself, merging the drive mechanism into the cam structure. This consolidation achieves large amplitude flap motion while containing the complexity within a single integrated component rather than separate assemblies.
Solution Approach 2:
The reduction gear (27) is nested inside the cam (8), with the motor (28) positioned within the hollow interior of the cam. This nested arrangement allows the drive mechanism to be contained within the cam structure, reducing overall device complexity while maintaining large motion amplitude.
2Length of moving object
If the cam diameter is increased to increase flap motion amplitude, then the angular motion amplitude is improved, but the bulk of the massage head increases
Solution Approach 1:
Instead of increasing cam diameter in one dimension, the solution utilizes the vertical dimension by positioning the hinge line at a distance from the cam rotation axis. This allows large flap motion amplitude to be achieved through vertical leverage rather than horizontal cam size, reducing the massage head bulk.
Solution Approach 2:
The reduction gear (27) acts as a mechanical advantage system that counterbalances the need for large cam dimensions. By providing torque multiplication, the reduction gear allows a smaller cam to achieve the same flap motion amplitude, thereby reducing the overall bulk of the massage head.
3Reliability
If suction means are integrated into the housing, then skinfold formation is improved, but the device complexity increases
Solution Approach 1:
The suction means are integrated directly into the housing (2), merging the suction function with the structural housing rather than using a separate suction device. This consolidation improves skinfold formation while avoiding the complexity of additional external components and connection mechanisms.
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 enhances the massage head's operational efficiency by increasing the amplitude of the flap's motion and varying the stress on the skin, while reducing bulk and improving user-friendliness, allowing for customizable massage effects.
Implementation Method 1
The relative displacement of the flap with respect to the housing is ensured by means of a motor-driven rotary cam, formed within the package, having a cam track, oriented substantially parallel to the displacement direction of the flap
Implementation Method 2
said housing being itself connected to suctions means enabling to create a depression between said rollers when the head provided between these different elements is applied against the patient's body, to form a skinfold bearing against the roller surface
Data Source
AI summary
This massage head includes a housing, having two active members emerging from the lower surface thereof, having its free lower edge, opposite to the housing, intended to be in contact with a patient's skin. One at least of said active members is formed of a flap hinged within the housing and capable of being pivoted to bring the lower edges of said active members closer to each other or draw them away from each other, the relative displacement of said at least one flap being ensured by means of a rotary cam formed within the housing, the rotation axis of the cam being oriented substantially parallel to the displacement direction of said at least one flap. The cam includes at least one cam track formed on its periphery, intended to cooperate with the flap support(s), having one or their ends hinged in the housing.