Torque Wrench with Pull-Out Rotating Knob for Quick Adjustment
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Solution Overview
Problem
Conventional torque wrenches require users to adjust torque values step by step, wasting time and causing inconvenience due to their limited and cumbersome adjustment process.
Innovation Solution
A torque wrench design featuring an adjusting knob that can be pulled outward and rotated relative to the operation bar and handle, allowing for direct and quick selection of torque values through a toothed engagement system and positioning grooves, enabling easy and precise adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional torque wrenches use preset torque values with fixed ranges, then the torque values can be controlled to prevent workpiece distortion, but the users must adjust torque values step by step which wastes working time
Solution Approach 1:
The torque wrench incorporates a dynamic adjustment mechanism where the adjusting knob can be freely rotated to change torque values continuously rather than in fixed steps. This allows the torque value to be adjusted dynamically based on real-time work requirements, eliminating the time-consuming step-by-step adjustment process while maintaining precise torque control through the toothed portion engagement system
Solution Approach 2:
The adjustment mechanism is divided into discrete segments through the toothed portion with multiple teeth and corresponding positioning grooves. Each tooth represents a specific torque value, and the positioning grooves provide discrete positioning points. This segmentation allows for precise torque selection while enabling quick jumping between different torque values by simply rotating the knob to different tooth positions, rather than adjusting step by step
2Ease of operation
If the adjusting knob is fixed on the handle, then the structure is simple, but the torque values cannot be adjusted freely and quickly
Solution Approach 1:
The adjusting knob is designed with dynamic positioning capability, allowing it to be rotated freely along the adjustment rod while maintaining engagement through the toothed portion. This dynamic design enables the knob to be positioned at any torque value by simple rotation, significantly improving ease of operation. The positioning grooves provide discrete locking points during rotation, ensuring stable positioning at selected torque values while allowing quick movement between different settings
Solution Approach 2:
The adjustment rod serves as an intermediary element between the adjusting knob and the handle. It transmits the rotational movement of the knob to the corresponding torque value changes in the spring mechanism. The toothed portion on the knob engages with teeth on the adjustment rod, creating a mechanical linkage that converts rotational position into precise torque value selection, thereby enabling free and quick adjustment without complicating the overall structure
Data Source
AI summary
A torque wrench includes an operation bar having a mounting sleeve, a hollow handle having an inner wall provided with a first toothed portion and a plurality of positioning grooves, and an adjusting unit including an adjusting knob movable relative the handle and having an outer wall provided with a second toothed portion detachably engaged with the first toothed portion of the handle and a positioning block detachably locked in one of the positioning grooves of the handle. Thus, the adjusting knob is initially pulled outwardly relative to the mounting sleeve and the linking rod and is then rotatable relative to the handle so as to adjust the torque values of the torque wrench.