Torque Wrench with Integrated Drive and Manual Adjustment
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Solution Overview
Problem
Conventional torque wrenches are cumbersome due to external motors, making them difficult to use in narrow spaces, and lack torque value indication and correction mechanisms, making it hard to set and correct preset torque values.
Innovation Solution
A compact torque wrench design that includes a force-applying rod, a transmission rod, a transmission shaft, a drive unit, a head unit, a trip unit, and an adjustment unit, allowing for power-driven and manual operation, torque value indication, and correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If an external motor is used to drive the working head, then the tightening speed is improved, but the device becomes cumbersome and difficult to use in narrow spaces
Solution Approach 1:
The patent merges the power-driven function and manual operation function into a single integrated torque wrench body. The transmission mechanism combines the drive shaft from the power unit with the manual input shaft, allowing both power-assisted quick tightening and manual precision tightening through the same head unit, eliminating the need for separate external motor equipment.
Solution Approach 2:
The torque wrench is designed with multi-functionality to perform both power-driven quick tightening and manual precision tightening operations. The transmission rod can receive input from either the drive shaft (power unit) or directly from manual operation, making the device adaptable to different working conditions and space constraints.
2Device complexity
If no torque value indication mechanism is provided, then the device structure is simpler, but it is not easy to set and correct the preset torque value
Solution Approach 1:
The patent incorporates a feedback mechanism through the scale ring and pointer system that provides visual indication of the preset torque value. The scale ring can be rotated to set different torque values, and the pointer indicates the current setting, allowing users to easily monitor and adjust the torque parameter during operation.
Solution Approach 2:
The torque value setting mechanism is designed to be dynamic and adjustable during operation. The scale ring can be rotated to change the preset torque value, and the trip mechanism can be adjusted to trigger at different torque levels, providing flexibility in setting and correcting torque parameters as needed.
3Device complexity
If no torque value correction mechanism is provided, then the device structure is simpler, but the preset torque value cannot be adjusted or corrected
Solution Approach 1:
The torque value correction mechanism is designed to be dynamically adjustable during operation. The scale ring can be rotated to change the preset torque value, and the trip mechanism can be adjusted to trigger at different torque levels, providing flexibility in setting and correcting torque parameters as needed.
Solution Approach 2:
The patent allows for preliminary setting of the torque value before operation through the scale ring adjustment, and enables correction during operation by rotating the scale ring to new positions. This preliminary and ongoing adjustability ensures the torque wrench can be properly configured for different work requirements.
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
Enables quick and accurate locking of workpieces with a constant torque, is convenient to operate, and can be used in narrow environments due to its compact structure, while allowing for easy adjustment and correction of torque values.
Implementation Method 1
a torsion spring connected to another side of the slide sleeve. The torsion spring elastically leans against the slide sleeve to move toward the force-applying rod
Data Source
AI summary
A torque wrench has a force-applying rod. The force-applying rod is connected to a transmission rod. The transmission rod can swing relative to the force-applying rod. A transmission shaft is disposed in the transmission rod. Two ends of the transmission shaft are connected to a drive unit and a drive unit, respectively. A trip unit and an adjustment unit are disposed between the force-applying rod and the transmission rod. The adjustment unit has a main scale ring, an adjustment ring, and a secondary scale ring. The drive unit is first started to tighten a workpiece in place quickly, and then the workpiece is further tightened manually. The workpiece can be locked quickly and accurately with a constant torque. The positions of the main scale ring and the secondary scale ring can be adjusted to correct the torque value.