Portable Massage Cushion with Eccentric Mechanism for Weight Reduction
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Solution Overview
Problem
Conventional massage chairs are bulky and heavy, making them difficult to move and use conveniently for releasing fatigue and backache.
Innovation Solution
A portable massage cushion with a built-in massage mechanism, including a seat cushion with L-shaped fabric cover, sponge body, and a massage mechanism comprising worm gears, eccentric rotating blocks, and elongate massage members, allowing for adjustable speed and orientation of massage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a massage chair is designed to provide comprehensive massage functions, then the massage effectiveness is improved, but the device becomes bulky and heavy, reducing portability
Solution Approach 1:
The patent divides the massage system into separate modular components: a portable massage cushion containing the driving mechanism and massage members, and a separate supporting frame. This segmentation allows the massage functionality to be concentrated in a lightweight, movable cushion while the frame provides structural support, resolving the contradiction between comprehensive massage capability and portability.
Solution Approach 2:
The patent transitions from a traditional three-dimensional chair structure to a two-dimensional cushion design that can be placed on various surfaces. By flattening the massage mechanism into a cushion form factor, the device gains portability and adaptability while maintaining massage effectiveness through the eccentric rotating block mechanism.
2Adaptability or versatility
If a massage chair is designed to be bulky to accommodate massage mechanisms, then the massage function is complete, but it becomes difficult to move randomly
Solution Approach 1:
The massage system is segmented into a portable cushion module with integrated driving mechanism and a separate supporting frame. The cushion can be easily moved and repositioned independently, while the frame remains stationary to provide support, enabling both complete massage functionality and easy repositioning.
Solution Approach 2:
The supporting frame acts as an intermediary between the portable cushion and the user's body. It provides structural support and positioning, while the cushion moves freely on top of it, allowing the system to maintain both stability for effective massage and mobility for random repositioning.
3Reliability
If massage members are made to provide strong massage effect, then the therapeutic benefit is improved, but friction and strain increase
Solution Approach 1:
The patent employs mechanical vibration through the eccentric rotating block mechanism, where the offset rotation generates oscillating motion in the massage members. This vibration delivers therapeutic massage effects through rhythmic pressure variations rather than continuous high-friction contact, reducing strain while maintaining therapeutic benefit.
Solution Approach 2:
The massage members operate through periodic oscillating motion driven by the eccentric rotating blocks. This periodic action delivers concentrated therapeutic pressure in rhythmic cycles, allowing tissue recovery between presses and reducing cumulative friction and strain compared to continuous pressing.
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
Provides a comfortable and adjustable massage effect that can be used at any location, enhancing user convenience and comfort by minimizing strain and friction.
Implementation Method 1
a worm gear (23) engaged with the transmission shaft (26)
Implementation Method 2
an eccentric rotating block (27) rotating about the transmission shaft (26)
Data Source
AI summary
A massage apparatus is disclosed with a housing and a motor oriented in the housing. An eccentric drive is driven by the motor for oscillating an elongate massage member. In one embodiment a pair of elongate massage members are provided. In another embodiment, a massage formation is limited to a range of linear translation in a first direction and limited to a range of rotational translation relative to the housing.