Audible Torque Wrench Handle for Accurate Adjustment in Low Light
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Solution Overview
Problem
Existing torque wrenches are difficult to use in dark environments or situations where observing the torque scale is inconvenient, making it challenging to adjust the preset torque accurately.
Innovation Solution
A torque wrench design that utilizes a plastic handle with a rotation limiting assembly, sink grooves, steel balls, and a sound feedback mechanism to indicate torque adjustments through audible cues, allowing for tactile and auditory feedback in environments where visual observation is impaired.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a torque scale is provided on the torque wrench for visual observation, then the torque adjustment can be understood conveniently in normal lighting conditions, but it becomes difficult to use in dark environments or where visual observation is inconvenient
Solution Approach 1:
The patent transitions from a two-dimensional visual scale on the wrench surface to a three-dimensional tactile feedback mechanism. The V-shaped groove structure creates audible clicks and tactile resistance that can be perceived through touch and sound, adding a spatial dimension to the feedback mechanism that works independently of visual input.
Solution Approach 2:
The patent replaces the visual observation mechanism (torque scale) with a mechanical feedback system consisting of V-shaped grooves, steel balls, and spring mechanisms. This mechanical substitution generates audible clicks and tactile resistance that provide feedback without requiring visual input, thereby resolving the contradiction between visual convenience and adaptability to dark environments.
2Adaptability or versatility
If the preset torque is adjusted by relative rotation of the handle and execution part, then the torque can be modified, but it is difficult to determine the adjustment accuracy without visual reference
Solution Approach 1:
The patent implements a feedback mechanism where the V-shaped groove and steel ball interaction produces audible clicks at specific torque intervals. This auditory feedback provides precise information about the torque setting without requiring visual observation, allowing users to accurately determine adjustment precision through sound alone.
Solution Approach 2:
The patent utilizes mechanical vibration and impact sounds generated when the steel ball transitions between V-shaped groove positions. These vibrations and audible clicks serve as precise indicators of torque settings, enabling accurate measurement feedback through tactile and auditory senses rather than visual observation.
3Reliability
If a rotation limiting assembly with sink grooves is used to limit handle rotation, then the torque adjustment range is controlled, but the structure becomes more complex
Solution Approach 1:
The patent merges multiple functions into the V-shaped groove structure: it serves as both a rotation limiting mechanism (controlling torque adjustment range) and a feedback generation mechanism (producing audible clicks through steel ball interaction). This consolidation reduces overall structural complexity while maintaining reliability of torque control.
Solution Approach 2:
The V-shaped groove structure performs multiple functions simultaneously: it limits rotation to control torque range, provides tactile feedback through its geometric shape, and generates audible feedback when the steel ball transitions between positions. This multi-functionality reduces the need for separate components, thereby managing structural complexity while ensuring reliable torque control.
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 accurate torque adjustment in dark or visually impaired conditions by providing auditory feedback, facilitating ease of use and ensuring precise torque settings without relying on visual scales.
Implementation Method 1
a small spring pushes the first steel ball to press against the side wall of the main pipe
Implementation Method 2
the rotating plastic handle adjusts the preset torque of the actuating component
Implementation Method 3
the ratchet actuating component is configured to rotate a bolt
Data Source
AI summary
A torque wrench for adjusting sound, comprising a plastic handle, and further comprising: a main pipe, and a ratchet actuating component and a rotation limiting assembly arranged on the main pipe, wherein one end of the main pipe is rotatably connected in the plastic handle; the rotation limiting assembly comprises a plurality of sink grooves evenly arranged in an annular manner on a side wall of the main pipe, and the rotation limiting assembly is configured to limit rotation of the plastic handle relative to the main pipe; the ratchet actuating component is configured to rotate a bolt, and the rotating plastic handle adjusts the preset torque of the actuating component; a placement hole is arranged on a side wall of the plastic handle, and a first steel ball and a small spring are arranged in the placement hole.