Torque Wrench Vibration Alarm Actuator
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Solution Overview
Problem
Torque wrenches in noisy environments often have voice alarms ignored, and prior vibration mechanisms compromise the accuracy of torque sensors due to shifting gravity.
Innovation Solution
A wrench design incorporating a torque sensor, actuator, and stick within a cavity, where the actuator moves the stick to provide a vibration alarm when torque exceeds a predetermined value, stabilizing the wrench's gravity and maintaining sensor accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibration mechanism is added to provide alarm, then the alarm effectiveness is improved, but the gravity shifts greatly and affects the accuracy of torque sensors
Solution Approach 1:
The wrench is divided into separate functional components: the handle containing the torque sensor, the stick for torque application, and the actuator mechanism for vibration alarm. This segmentation allows the alarm function to be isolated from the sensing function, preventing gravity shifts from affecting sensor accuracy while maintaining effective alarm capability.
Solution Approach 2:
The actuator serves as an intermediary mechanism that converts electrical signals into mechanical vibration without directly affecting the torque sensor. By using this intermediate device, the system achieves effective alarm notification while isolating the sensor from gravitational interference caused by moving parts.
2Device complexity
If voice alarm is used, then the device complexity is reduced, but the alarm is ignored in noisy working environment
Solution Approach 1:
The patent employs a vibration mechanism that generates mechanical oscillations through an actuator to provide tactile feedback. This mechanical vibration alarm is physically perceptible and cannot be ignored, making it effective in noisy environments where voice alarms would be masked, while adding minimal complexity to the overall system.
Data Source
AI summary
The disclosure relates to a wrench. The wrench includes a body, a torque sensor, a stick and an actuator. The body includes a cavity therein. The torque sensor is used to sense a torque applied by the body. The stick is located in the cavity of the body. The actuator is applied to move the stick to hit the body when the torque is greater than a predetermined value.