Hand-Held Massage Device With Transverse Power and Linear Drive
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Solution Overview
Problem
Existing hand-held muscle relaxation devices face challenges in converting high-speed rotational movement of the motor into effective linear reciprocating movement of the massage head module.
Innovation Solution
A hand-held muscle relaxation device with a transversely arranged power supply and a power conversion mechanism that includes a universal coupling and a crank-slider mechanism to convert rotary movement into linear reciprocating movement, featuring a motor with a first rotation axis and a handle that can rotate relative to the casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional power supply arrangement is used in hand-held muscle relaxation devices, then the structural layout is simple, but the conversion of high-speed rotational movement to linear reciprocating movement is inefficient
Solution Approach 1:
The patent applies dynamics by making the handle rotatable relative to the casing around a second rotation axis that is perpendicular to the first rotation axis. This dynamic configuration allows the user to adjust the handle angle to optimize the transmission of rotational movement from the motor to the massage head, improving the efficiency of converting rotational movement to linear reciprocating movement while maintaining a relatively simple overall structure.
2Adaptability or versatility
If the handle is fixed relative to the casing, then the device structure is stable, but the device cannot be adjusted for different body parts
Solution Approach 1:
The handle is designed to be rotatable relative to the casing around a second rotation axis perpendicular to the first rotation axis, enabling the user to adjust the handle angle according to different massage needs and body parts. The locking mechanism provides a locked state to fix the handle at desired angles and an unlocked state to allow rotation, thus achieving both adaptability and structural stability.
Solution Approach 2:
The device is segmented into movable and fixed parts: the handle can rotate relative to the casing, and the locking mechanism can switch between locked and unlocked states. This segmentation allows the handle to be adjusted for different body parts while maintaining overall device stability when locked.
3Productivity
If the first rotation axis is parallel to the first axis, then the power transmission is direct, but the conversion efficiency to linear reciprocating movement is reduced
Solution Approach 1:
The patent employs asymmetry by arranging the first rotation axis of the motor at an angle to the first axis of the massage head module's linear reciprocating movement. This asymmetric arrangement, combined with the rotatable handle having a second rotation axis perpendicular to the first axis, optimizes the conversion of rotational movement to linear reciprocating movement, improving movement conversion efficiency while maintaining a relatively simple axis arrangement.
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 effectively converts high-speed rotational movement into linear reciprocating movement for massage, providing shock absorption and allowing the handle to be adjusted for different body parts, enhancing massage efficacy and user convenience.
Implementation Method 1
the elastic member is able to reset the rotation stopper
Implementation Method 2
a first soft rubber block is provided between the bracket and the opening portion of the handle; and a second soft rubber block is provided between the bracket and the motor
Data Source
AI summary
A hand-held muscle relaxation device includes a power supply arranged transversely which includes a housing; a power supply; a motor; a massage head module and a power conversion mechanism. The power conversion mechanism is mounted inside the housing and the power supply is electrically connected with the motor. The motor is provided with a first rotation axis, and the motor drives the massage head module to perform a linear reciprocating movement along a first axis through the power conversion mechanism. The housing comprises a casing and a handle mounted at a side of the casing. The motor is mounted inside the handle and the power supply is mounted inside the casing. During working, the motor drives the massage head module to perform a linear reciprocating movement at a higher frequency to achieve an impact, beating, and massage on the human body.