Torque Wrench Wire Holder for Loadcell Cable Coiling
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Solution Overview
Problem
Digital torque wrenches face issues with the management of loadcell wires, which can become tangled or interfere with the operation, leading to inaccurate torque readings and operational inefficiencies.
Innovation Solution
A wire holder is integrated into the digital torque wrench to manage the loadcell wire, limiting rotational and axial movements, and a limit switch assembly is used to stabilize display readings, ensuring accurate torque measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a digital torque wrench uses a loadcell with wire connections, then accuracy is improved, but the wire may become tangled or interfere with operation
Solution Approach 1:
The wire is nested within a spiral groove that is integrated into the loadcell holder structure. The groove provides a designated path for the wire to follow, keeping it organized and preventing tangling while maintaining the electrical connection between the loadcell and display components.
Solution Approach 2:
The wire management solution transitions from a two-dimensional surface layout to a three-dimensional spiral groove structure. This vertical integration of the wire path within the holder allows the wire to be routed through multiple levels and angles, preventing interference with the torque wrench operation.
2Ease of manufacture
If the wire is allowed free movement within the torque wrench, then ease of assembly is improved, but tangling and interference with operation occur
Solution Approach 1:
The spiral groove is pre-formed as an integral part of the loadcell holder during manufacturing. This preliminary structuring of the wire path eliminates the need for separate wire management components or complex assembly steps, while ensuring the wire remains organized throughout the device's operational life.
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 wire holder prevents tangling and interference, while the limit switch assembly maintains accurate torque readings by preventing temporary jumps and ensuring consistent display values, enhancing operational reliability and precision.
Implementation Method 1
As torque is applied to the loadcell, it is converted into a change in electrical resistance which can then be measured
Data Source
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AI summary
The present invention discloses a wire holder configured to manage the wire of a loadcell assembly within a digital torque wrench. The wire disclosed wire holder includes a body having a neck and a first arm and second arm that form a clip. The clip is configured to secure the body to a casing structure within the digital torque wrench. The wire holder is characterized in that it further includes a groove formed between first and second walls that run down neck and one of either the first or second arms. The groove is configured to receive a wire from the loadcell and facilitate the coiling of said wire about the casing structure above the clip as the wire holder translates up and down the casing structure.