Adjustable Torque Multi-Tool with Spring Indicator
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Solution Overview
Problem
Conventional torque wrenches are often too large and heavy for portability, and multi-tools with a single pre-set torque are inadequate for the diverse torque requirements of various applications, making it difficult for households to accurately tighten fasteners to specified torque values.
Innovation Solution
A selectively adjustable torque indicating tool with a pair of supports, a spring, and an adjuster that allows the tool bit to rotate and impart rotational force on a mechanical fastener, enabling adjustment of torque settings and indicating when the desired torque is reached, while maintaining the functionality of a standard multi-tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a stand-alone torque wrench is designed with adjustment capabilities for different torque settings, then the adaptability to various applications is improved, but the device size and weight increase, reducing portability
Solution Approach 1:
The patent combines a multi-tool with torque indicating capabilities into a single integrated device. The torque indication mechanism is incorporated into the multi-tool handle, allowing the tool to function both as a general multi-tool and as a torque-indicating tool, eliminating the need for a separate stand-alone torque wrench
Solution Approach 2:
The tool is designed to serve multiple functions: it can be used as a standard multi-tool for various mechanical tasks and as a torque-indicating tool for precise fastening applications. The spring mechanism and indicator system are integrated into the multi-tool structure, enabling one device to fulfill multiple purposes
2Measurement precision
If a multi-tool is equipped with torque indication capabilities and adjustability for different torque settings, then the measurement precision for torque application is improved, but the device complexity increases
Solution Approach 1:
The spring mechanism automatically indicates when the predetermined torque setting is reached through visual indicators (such as colored bands or markers becoming visible). The tool self-regulates and provides feedback without requiring external measurement devices or complex electronic systems
Solution Approach 2:
A spring mechanism serves as an intermediary between the applied torque and the user. The spring compresses or rotates in response to applied torque and translates this mechanical force into a visible indication through indicators aligned with reference marks, providing a simple mechanical translation system
3Length of moving object
If a torque wrench is designed to be compact and portable, then the ease of carrying is improved, but the manufacturing cost and minimum size increase
Solution Approach 1:
The torque indication mechanism is nested within the multi-tool handle structure. The spring, indicators, and adjustment mechanisms are integrated into the existing multi-tool components, utilizing available space rather than adding external attachments or separate systems
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 tool allows for accurate tightening to specific torque values, is portable, and can be manufactured with minimal increase in cost and size, making it practical for household use and various applications.
Implementation Method 1
A spring is coupled to the pair of supports, and operatively coupled to the tool bit. The spring includes a first end portion that is movable relative to the pair of supports between a neutral position and a torqued position in response to the rotational force being imparted on the mechanical fastener by the tool bit.
Implementation Method 2
The spring includes a first end portion that is movable relative to the pair of supports between a neutral position and a torqued position in response to the rotational force being imparted on the mechanical fastener
Data Source
AI summary
A selectively adjustable torque indicating tool is provided for rotating a mechanical fastener to a predetermined torque setting. The tool includes a pair of supports and a tool bit positioned between the pair of supports and engageable with a mechanical fastener such that when the tool bit, a rotational force is imparted on the mechanical fastener. A spring is coupled to the pair of supports, and operatively coupled to the tool bit. The spring includes a first end portion movable relative to the pair of supports between a neutral position and a torqued position in response to the rotational force being imparted on the mechanical fastener by the tool bit. An adjuster is coupled to the spring to adjust a stiffness of the spring such that movement of the first end portion of the spring from the neutral position to the torqued position corresponds to a predefined rotational force.