Digital Torque Wrench With Mechanical Release And Quick Adjustment

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing torque wrenches fail to accurately stop applying torque at the predetermined value due to user inertia, leading to inaccurate fastening and lack a mechanical indication when the torque is reached.

Innovation Solution

A digitally displaying torque wrench with mechanical torque adjustment, featuring a wrenching device, torque releasing device, shaped elastic member, torque adjusting device, and torque sensing device, which includes a linkage bar and actuating member to hit inner walls when torque is reached, providing a mechanical release and digital display of the setting value.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a torque wrench digitally displays the torque setting value, then the measurement precision is improved, but the device complexity increases

Engineering Contradiction:

Improvetorque setting value displayVSAvoidwrench structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines digital display technology with mechanical torque wrench structure, integrating the torque sensing device and display unit into the wrench body. This merging allows the wrench to maintain its mechanical operation principles while adding digital measurement and display capabilities, thus improving measurement precision without excessively increasing complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The torque wrench is designed to perform multiple functions: mechanical torque application, digital torque measurement, torque value display, and torque release indication. By making the device universal, the patent justifies the increased complexity through enhanced functionality and measurement capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If the tripping mechanism pivot member is disposed in the base board rigidly fixed in the main body, then the device complexity is reduced, but the reliability of mechanical indication is worsened

Engineering Contradiction:

Improvetripping mechanism structureVSAvoidmechanical hitting indication

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent extracts the pivot member from the rigidly fixed base board and relocates it to the actuating member, which is pivotally disposed in the main body. This extraction allows the pivot member to properly engage and hit the main body during torque release, ensuring reliable mechanical indication while maintaining structural simplicity.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of operation

If the torque releasing device uses a shaped elastic member, then the ease of operation is improved, but the manufacturing precision requirements increase

Engineering Contradiction:

Improvetorque adjustmentVSAvoidshaped elastic member geometry

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent employs a shaped elastic member with specific geometric parameters that can be adjusted to optimize both ease of operation and manufacturing feasibility. By carefully selecting the elastic member's shape parameters, the patent achieves a balance between user-friendly torque adjustment and manufacturability.

Inventive Principle:

Principle #35Parameter changes

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 wrench achieves precise torque control with mechanical release and quick adjustment, ensuring accurate torque application and digital display, addressing the inaccuracies and lack of mechanical indication in existing wrenches.

Implementation Method 1

a shaped elastic member comprising a fixing end, and the fixing end of the shaped elastic member fixed to the torque releasing device

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the torque sensing device configured to sense a displacement variation of the torque adjusting device

Methodology Applied

Scientific EffectPiezoresistive effect: Piezoresistive Effect

Data Source

PatentUS20250326097A1Digitally displaying torque wrench with mechanical torque adjustment

Publication Date: 2025.10.23 HU BOBBY

AI summary

A digitally displaying torque wrench with mechanical torque adjustment includes a main body, a wrenching device, a torque releasing device, a shaped elastic member, a torque adjusting device, and a torque sensing device. The torque adjusting device efficiently slides along a direction in parallel to an axis of the main body, so as to be operable by the user to adjust an axial position of a resting member of the torque adjusting device with respect to the shaped elastic member, thereby quickly adjusting the torque setting value of the wrench. Also, when the force transmission is stopped by the torque releasing device, the wrenching device provides a mechanical torque disengagement to notify the user of the force reaching the torque setting value.