Torque-Alert Wrench With Electromechanical Contact Switch
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Solution Overview
Problem
Conventional wrenches lack the ability to measure torsion force accurately, which can impact the safety of operating precise machines, as they require different strength levels for locking and unlocking.
Innovation Solution
A wrench design incorporating a hollow handle, a driver with a drive shaft and drive head, a battery-powered alert device, a switch with first and second contacts, and a force applying device that alerts the user when the applied torsion exceeds a predetermined force, utilizing a spring and mass mechanism to separate the contacts and activate the alert device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional wrench is used, then the structure is simple, but the ability to measure torsion force is lacking
Solution Approach 1:
The patent replaces the purely mechanical wrench structure with an electromechanical system that uses electrical contacts, a battery base, and electronic components to detect and indicate torsion force levels, thereby enabling measurement functionality while maintaining operational simplicity
Solution Approach 2:
The patent introduces electrical contacts as intermediary elements between the mechanical drive shaft and the measurement indication system. These contacts act as sensors that convert mechanical displacement into electrical signals, enabling torsion measurement without directly complicating the mechanical structure
2Reliability
If no torsion measurement is provided, then the device complexity is low, but the operational safety is compromised
Solution Approach 1:
The patent implements a feedback mechanism where electrical contacts provide real-time information about torsion force levels to the user through visual or audible indicators. This feedback loop allows operators to monitor applied force and adjust accordingly, ensuring safe operation of precision machines
Solution Approach 2:
The patent incorporates a predetermined force setting mechanism that prepares the wrench to detect and alert at specific torsion thresholds before dangerous levels are reached. This preliminary action prevents unsafe operation by providing advance warning
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 solution enables users to safely operate machines by providing a clear indication when the applied torsion exceeds a safe threshold, enhancing operational safety and precision.
Implementation Method 1
The force applying device applies a predetermined force to the drive shaft to separate the first contact and the second contact
Implementation Method 2
a battery base, an alert device, a switch and a force applying device. The driver includes a drive shaft and a drive head
Data Source
AI summary
A wrench includes a hollow handle, a driver, a battery base, an alert device, a switch and a force applying device. The driver includes a drive shaft and a drive head. The drive shaft is received in the hollow handle and pivotally connected to the inner wall of the hollow handle. The drive head is connected to the drive shaft and protrudes from the hollow handle. The switch electrically connects the battery base and the alert device. The switch includes a first contact and a second contact. The first contact is located on the drive shaft. The second contact is located on the inner wall of the hollow handle. The force applying device applies a predetermined force to the drive shaft to separate the first contact and the second contact.