Eccentric-Joint Massager Drive for Compact Peristaltic Motion
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Solution Overview
Problem
Existing massage devices with peristaltic mechanisms have a long skeletal structure that prevents full insertion into the human body and limit the effectiveness of peristaltic motion, especially when additional functional modules are attached.
Innovation Solution
A drive mechanism with a transmission assembly using eccentric joints and movable push blocks, where the sliding direction of the push blocks is parallel to the width of the movable slot, and the limit bracket restricts their movement, allowing for a shorter skeleton structure that can fully insert into the body while maintaining peristaltic motion and accommodating additional functional modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a long skeletal structure is used to avoid interference between adjacent joints during oscillation, then peristaltic effect with sufficient amplitude is achieved, but the massage head cannot be fully inserted into the human body
Solution Approach 1:
The massage head is divided into multiple segments (first massage head, second massage head, third massage head) that can independently oscillate. Each segment is driven by its own eccentric joint, allowing peristaltic motion without requiring a long continuous skeletal structure. This segmentation enables sufficient peristaltic amplitude while keeping each segment compact enough for full body insertion.
Solution Approach 2:
The patent transitions from a single-plane oscillation mechanism to a multi-dimensional oscillation system. Multiple eccentric joints are arranged in different spatial positions and orientations, causing the massage head segments to oscillate in multiple directions simultaneously. This dimensional approach achieves peristaltic effect without extending the length of the massage head in the insertion direction.
2Ease of operation
If a long skeletal structure is used to achieve peristaltic motion, then sufficient peristaltic amplitude is obtained, but additional functional modules cannot be accommodated
Solution Approach 1:
The massage head is segmented into multiple independent sections, each capable of accommodating functional modules. The first, second, and third massage heads can independently house vibration motors, heating elements, or other functional components. This modular segmentation allows functional modules to be added without increasing the overall length of the massage head, as each segment can accommodate its own functions.
Solution Approach 2:
Each segment of the massage head is designed with universal functionality to accommodate various functional modules. The eccentric joint structure and movable slot design provide a standardized interface that can support different types of functional modules (vibration, heat, massage) in each segment, making the system versatile and adaptable to different user needs without requiring a longer skeletal structure.
3Adaptability or versatility
If a bent shaft is used to drive the peristaltic massager, then the massage head can bend to conform to body contours, but the skeletal structure becomes too long
Solution Approach 1:
Instead of using a single long bent shaft, the patent segments the driving mechanism into multiple eccentric joints positioned at different locations along the massage head. Each eccentric joint independently drives its adjacent massage head segment, creating localized bending and conforming motion. This approach achieves body contour conformity through distributed segmentation rather than a single long flexible shaft.
Solution Approach 2:
The patent employs dynamic oscillation through eccentric joints that convert rotational motion into reciprocating linear motion of the massage head segments. This dynamic mechanism allows each segment to independently bend and retract in response to the oscillating motion, enabling the massage head to conform to body contours without requiring a statically long or overly flexible skeletal structure.
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 mechanism enables a comprehensive massage effect by allowing the massage head to be fully inserted into the body and supports additional functional modules, enhancing the massage experience.
Implementation Method 1
the transmission assembly includes a plurality of eccentric joints, and each of the eccentric joints includes a connecting portion and an eccentric portion; the connecting portion is configured to connect adjacent eccentric joints; and the eccentric portion abuts against the movable slot
Data Source
AI summary
Disclosed is a massager drive mechanism, including a drive motor, a transmission assembly, a limit bracket, and a plurality of movable push blocks; each of the movable push blocks includes a movable slot and a pushing portion; the transmission assembly includes a plurality of eccentric joints, and each of the eccentric joints includes a connecting portion and an eccentric portion, the connecting portion is configured to connect adjacent eccentric joints, and the eccentric portion abuts against the movable slot; a rotary shaft of the drive motor serves as a first rotary shaft; a farthest point on the eccentric portion from the first rotary shaft is a farthest eccentric end, and a line connecting adjacent farthest eccentric ends forms a first included angle with the first rotary shaft; and the limit bracket is connected to the movable push blocks in a sliding manner.