Treadmill Auto Lock System Using Sensor-Actuated Axle Braking
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Solution Overview
Problem
Motorized and manual treadmills do not effectively prevent unauthorized use, fail to alert nearby individuals that the tread is moving, and lack efficient means to convey information to users or observers.
Innovation Solution
An auto lock system for manual treadmills that includes a locking mechanism with a movable arm and actuator, controlled by sensors to detect user presence, which engages the locking mechanism when the user is not on the treadmill, and a braking system to slow the tread when the user steps off, along with lighting systems to alert others of the treadmill's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the treadmill tread continues to move after user steps off, then the treadmill operates automatically, but it creates safety hazards and allows unauthorized use
Solution Approach 1:
The locking mechanism is engaged automatically when the sensor detects no user presence, preventing the tread from moving before anyone can step on it. This preliminary locking action eliminates the safety hazard of unexpected tread movement while maintaining automatic operation when authorized users are present.
Solution Approach 2:
The sensor provides continuous feedback about user presence to the controller, which automatically engages or disengages the locking mechanism. This feedback loop ensures the tread only moves when a user is detected, eliminating unauthorized use while maintaining automatic operation during authorized use.
2Object-affected harmful factors
If a locking mechanism is added to prevent unauthorized use, then safety improves, but device complexity increases
Solution Approach 1:
The locking mechanism serves multiple functions: it prevents unauthorized use by locking the tread, and it automatically disengages when a user is detected to enable normal operation. This multi-functionality achieves safety without requiring separate systems for locking and unlocking.
Solution Approach 2:
The locking mechanism is self-actuating through the sensor and actuator system that automatically detects user presence and engages or disengages the lock without manual intervention. This self-service operation adds safety functionality without requiring complex manual control systems.
3Reliability
If a sensor and actuator system is implemented for automatic locking, then unauthorized use is prevented, but manufacturing cost increases
Solution Approach 1:
The system replaces complex mechanical locking systems with a sensor-based detection system that uses an actuator to engage a simple locking mechanism. This substitution reduces manufacturing complexity and cost while maintaining reliable authorized use control through electronic sensing rather than complex mechanical switches.
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 unauthorized use by locking the treadmill when not in use, safely slows the tread when the user steps off, and alerts nearby individuals through lighting systems, enhancing user safety and operational efficiency.
Implementation Method 1
the first magnet and the second magnet slowing rotation of the one of the front axle or the rear axle via magnetic force on the flange
Data Source
AI summary
An auto lock system for a manual treadmill, the auto lock system having a locking mechanism comprising a movable arm having a distal end facing one of the front axle or the rear axle, a locking device at the distal end of the movable arm configured to engage the one of the front axle or the rear axle to inhibit rotation of respective front wheels or rear wheels, and an actuator configured to move the movable arm. A controller is in communication with a sensor configured to detect a user on the tread. The controller is configured to, in response to the sensor detecting no user on the manual treadmill, actuate the actuator to move the movable arm such that the locking device engages the one of the front axle or the rear axle.