Massage Device Leg Brackets with Safety Sensor
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Solution Overview
Problem
Existing massage devices with independently operating leg massage parts can cause accidents when a user's body or objects get caught between them, leading to potential harm and device damage.
Innovation Solution
A massage device design featuring a leg connection frame with rotatable leg massage parts, supported by center and side support brackets with bushings and bearings, and a safety sensor module to prevent accidents by controlling operation and emitting alarms when external forces are applied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If leg massage parts are operated independently to provide customized massage, then massage effectiveness is improved, but safety risk increases when body parts get caught between moving legs
Solution Approach 1:
The patent incorporates a safety sensor that continuously monitors the space between leg massage parts and detects when a user's body approaches the danger zone. When the sensor detects proximity, it immediately stops the motor drive, preventing the harmful situation from occurring. This feedback mechanism allows the system to maintain independent operation for customized massage while automatically responding to safety threats.
2Adaptability or versatility
If leg massage parts are made rotatable for independent operation, then massage functionality is improved, but device complexity increases due to additional support brackets and bushings
Solution Approach 1:
The patent divides the support structure into separate center support brackets and side support brackets, with each bracket independently supporting specific leg massage parts. This segmentation allows for easier assembly and maintenance while enabling independent rotation of each leg massage part. The modular approach reduces overall complexity compared to a monolithic support structure.
Solution Approach 2:
The patent introduces bushings as intermediary components between the leg massage parts and the support brackets. These bushings serve as mediators that enable smooth rotation while absorbing mechanical stresses and misalignments. By using bushings, the system achieves independent rotatable operation without requiring complex precision alignment, thereby reducing overall device complexity.
3Reliability
If safety sensors are added to prevent accidents, then safety is improved, but device complexity and cost increase
Solution Approach 1:
The safety sensor system operates autonomously without requiring user intervention or complex control logic. The sensor continuously monitors the safety zone and automatically triggers the motor stop function when danger is detected. This self-service approach minimizes additional complexity compared to systems requiring manual safety checks or complex interlock mechanisms.
Data Source
AI summary
The present invention relates to a massage device including: a leg connection frame; a first leg massage part connected to the leg connection frame in a rotatable manner and accommodating one leg of a user; a second leg massage part connected to the leg connection frame to be spaced apart from the first leg massage part, provided to be rotated independently from the first leg massage part, and accommodating the other leg of the user; a center support bracket provided on the leg connection frame, rotatably supporting the inner side of the first leg massage part and the inner side of the second leg massage part; and a side support bracket provided on the leg connection frame, rotatably supporting the outer side of the first leg massage part and the outer side of the second leg massage part.