Fascia Gun Attachment Interlock for Accidental Start Prevention
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Solution Overview
Problem
The piston of existing fascia guns can cause harm to the human body due to accidental start-up when the massage head is pulled out but not turned off, posing safety risks.
Innovation Solution
A fascia gun design that includes a conduction component with a trigger and switch controller to disconnect the anti-mistouch circuit when the massage head is separated from the piston, ensuring the driver cannot be started accidentally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the massage head is detached from the piston, then the user can replace or clean the massage head, but the driver may be accidentally activated causing harmful reciprocating motion
Solution Approach 1:
The switch controller is pre-positioned on the piston and the trigger is pre-positioned on the massage head. The circuit is designed to automatically detect whether the massage head is attached before allowing driver activation, preventing accidental activation before the massage head is even attached
Solution Approach 2:
The switch controller acts as an intermediary between the trigger and the driver. It monitors the circuit connection status and only allows the driver to operate when the massage head is properly attached, mediating between user input and motor activation to prevent harmful accidental activation
2Reliability
If the switch controller is integrated on the piston, then the anti-mistouch function is enabled, but the device complexity increases
Solution Approach 1:
The switch controller is merged with the piston structure, and the trigger is merged with the massage head structure. This integration reduces the need for separate safety mechanisms and simplifies the overall system architecture while maintaining reliable anti-mistouch protection
Solution Approach 2:
The switch controller serves multiple functions: it detects whether the massage head is attached, controls the driver activation state, and provides the anti-mistouch safety function. This multi-functionality reduces the need for separate components and simplifies the device complexity
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
Prevents accidental activation of the piston, enhancing safety by ensuring the driver remains off when the massage head is detached, thereby preventing potential harm to the user.
Implementation Method 1
the trigger is a magnetic member, and the switch controller is a hall element. When the massage head is connected to the piston, the magnetic member is close to the hall element. When the hall element senses a magnetic field of the magnetic member, the anti-mistouch circuit of the main control board is conducted.
Data Source
AI summary
A fascia gun includes a housing, a movement assembly, a massage head and a conduction component. When the massage head is separated from the piston, the trigger and the switch controller are spaced apart from each other, and the switch controller is configured to disconnect the anti-mistouch circuit of the main control board to limit the main control board from controlling the start of the driver. When the massage head is connected to the piston, the trigger is configured to trigger the switch controller to conduct the anti-mistouch circuit of the main control board to release the restriction of the main control board on the driver.