Torque Wrench Single-Handed Adjustment via Handle Opening
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Solution Overview
Problem
Conventional torque wrenches require two hands to adjust the torque setting value, making the process inconvenient.
Innovation Solution
A torque wrench design featuring a handle with a radially open tubular member, a swingable driving portion, a torque-disengageable mechanism, and an adjusting assembly that allows single-handed adjustment through a rotatable adjusting member, elastic member, and position-limiting mechanism, enabling adjustment of the torque setting value without requiring both hands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotatable adjusting member is provided at one end of the main body opposite to the working portion, then the torque wrench can be adjusted, but two hands are required for adjustment which reduces convenience
Solution Approach 1:
The adjusting member is integrated into the handle structure, merging the adjustment function with the gripping function. The handle serves both as the grip for holding the wrench and as the mounting structure for the adjusting member, allowing one-handed operation where the same hand that grips the handle can also adjust the torque setting.
Solution Approach 2:
The handle is designed with multi-functionality, serving both as the structural component for gripping and as the platform for adjustment operations. The opening in the handle accommodates the adjusting member, enabling the handle to perform dual functions of providing grip and enabling adjustment without requiring additional hands.
2Ease of operation
If the adjusting member is integrated into the handle with an opening, then single-handed adjustment is enabled, but the structural complexity increases
Solution Approach 1:
The handle is segmented with an opening that accommodates the adjusting member, separating the adjustment mechanism from the main body structure. This segmentation allows the adjusting member to be independently operated within the handle opening, enabling one-handed adjustment while maintaining a relatively simple overall structure.
Solution Approach 2:
The adjusting member is nested within the handle structure, with the adjusting member fitting into the opening of the handle. This nesting arrangement allows the adjustment mechanism to be housed within the handle without significantly increasing the external dimensions or overall complexity of the torque wrench.
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 convenient single-handed adjustment of the torque setting value, preventing over-tightening and enhancing user experience by allowing precise control without the need to hold the main body and adjust the rotatable member simultaneously.
Implementation Method 1
a deformable portion is defined on the elastic member between the position-limiting member and the abutting member, when a force exerted on the driving portion is equal to or greater than a force value of the deformable portion, the torque-disengageable mechanism and the abutting member are disengaged from each other
Implementation Method 2
the adjusting member including a first threaded portion, the slidable assembly including a second threaded portion screwed with the first threaded portion, the adjusting member being rotatable to drive the position-limiting member and the slidable assembly to move along the axial direction
Data Source
AI summary
A torque wrench includes a main body, a driving portion, a torque-disengageable mechanism, a torque assembly and an adjusting assembly. The main body defines an axial direction and includes a handle and a tubular member which are assembled with each other. The handle has an opening which is open radially. The torque-disengageable mechanism is swingably disposed within the tubular member. The torque assembly is disposed in the main body. The adjusting assembly includes a position-limiting member, a slidable assembly and an adjusting member. The adjusting member is rotatably connected to the handle and corresponding to the opening. The adjusting member has a first threaded portion. The slidable assembly has a second threaded portion screwed with the first threaded portion.