Adjustable Electric Wrench with Internal Motor and Locking Spring
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Solution Overview
Problem
Traditional wrenches require significant physical effort and time, are not compatible with power tools, and necessitate carrying multiple sizes, making them inefficient and cumbersome for professionals working with nuts and bolts, especially in confined spaces.
Innovation Solution
An electric wrench with an adjustable head, a ¾ ring, and internal motors with a locking spring mechanism, integrating a power tool attachment for enhanced torque and control, and a secondary wrench for secure grip, allowing for various nut and bolt sizes without needing additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional wrenches are used manually, then they can tighten or loosen nuts and bolts, but they require significant physical effort and time
Solution Approach 1:
The patent replaces manual mechanical turning with an electric motor that rotates the wrench body, eliminating the need for operators to apply physical torque. The motor-driven rotation mechanism automatically turns the adjustable head to tighten or loosen fasteners, dramatically reducing physical effort while increasing tightening speed.
Solution Approach 2:
The wrench incorporates an automatic reversing mechanism that allows the adjustable head to automatically switch between tightening and loosening modes without manual intervention. The motor controller automatically reverses rotation direction based on the operation mode, enabling the tool to serve itself and eliminating the need for operators to manually reposition or reorient the wrench.
2Adaptability or versatility
If multiple wrenches of different sizes are carried, then various nut and bolt sizes can be accommodated, but it becomes expensive and difficult to store
Solution Approach 1:
The patent designs the adjustable head with a movable jaw that can be positioned at multiple discrete settings to accommodate various fastener sizes. This single multi-functional head replaces the need for multiple dedicated wrenches, allowing one tool to perform the function of many different-sized wrenches while reducing storage and cost requirements.
Solution Approach 2:
The adjustable head incorporates a movable jaw that can dynamically reposition to different locations along the wrench body, allowing the opening width to be changed according to the fastener size. This dynamic adjustment capability enables the same wrench structure to adapt to different sizes without requiring multiple static wrenches.
3Ease of operation
If traditional ratchets are used, then they can work in confined spaces, but they are not compatible with power tools
Solution Approach 1:
The patent merges the compact ratchet mechanism with an electric motor assembly into a single integrated power tool. The ratchet teeth are incorporated into the motor housing or drive train, allowing the tool to combine the space-saving ratchet design with motorized automation, enabling operation in confined spaces while providing power tool compatibility.
Data Source
AI summary
An electric wrench for tightening and loosening nuts and bolts easily. The wrench includes an upper power wrench encased within a circumferential ring, equipped with adjustable interior wrench gears controlled by internal motors and a locking spring mechanism to accommodate various nut and bolt sizes. A pair of quarter ring guide bars, linked to corresponding user-operated arms, provides gear engagement through a chain mechanism thereby facilitating efficient rotational motion of the upper wrench. A second integrated wrench connected to corresponding gear mechanism obviates the need for a secondary tool and enhances user convenience.