Torque Wrench Self-Adjusting Sleeve Mechanism
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Solution Overview
Problem
The existing torque wrench adjustment structures require assistance from another hand tool for torque adjustment, making the operation inconvenient and less practical.
Innovation Solution
A torque adjustment switching structure that includes a screw hole seat, an axial actuating sleeve, a pull-back rotating sleeve, and a clutch member, allowing for axial sliding and rotation of the pull-back rotating sleeve to adjust the torque without the need for additional hand tools, utilizing a limiting member for precise control and automatic reset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional torque adjustment structure is used, then the torque wrench can adjust the spring force to achieve torque adjustment, but an additional hand tool is required to assist in the adjustment process
Solution Approach 1:
The torque wrench is designed to perform its own torque adjustment without requiring external hand tools. The user can directly operate the adjustment mechanism on the handle to modify the spring force and achieve the desired torque setting, making the device self-sufficient and eliminating the need for additional tools during the adjustment process
Solution Approach 2:
The adjustment structure is divided into separate functional components including the adjustment mechanism, spring assembly, and locking elements. This segmentation allows the torque wrench to independently perform adjustment operations through its internal components rather than requiring external tools to manipulate the spring force
2Ease of operation
If the adjustment component is disposed at the tail end of the grab handle, then the torque adjustment function is achieved, but the convenience of use is inadequate due to the need for additional hand tools
Solution Approach 1:
The adjustment mechanism is designed to be self-operating through a direct-actuation structure that allows the user to modify torque settings by simply manipulating the handle itself, without requiring external hand tools. The internal spring force adjustment is performed through the handle's own movement, making the operation convenient and reliable
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 simple and convenient torque adjustment by pulling back and rotating the pull-back rotating sleeve, eliminating the need for additional tools and enhancing the operational ease of torque wrenches.
Implementation Method 1
the threaded section is screwed to the guiding screw hole of the screw hole seat adjacent to the inner end limiting part, so that the inner end limiting part abuts against one end of the screw hole seat
Implementation Method 2
a limiting member is disposed at a position of the screw corresponding to the pull-back rotating sleeve, and the limiting member generates a limiting force for the at least axial backward sliding state of the pull-back rotating sleeve
Implementation Method 3
the axial actuating sleeve and the rear section of the extension handle are provided with an axial movement limiting member that cooperates with each other to restrict the axial actuating sleeve that only perform axial displacement movement of the limited stroke but cannot be rotated
Data Source
AI summary
A torque adjustment switching structure of a torque wrench is characterized by: a screw hole seat, which is located in the rear section of the torque wrench extension shank; the axial actuating sleeve can be axially advanced and retracted; the rear pull sleeve can be forced against the axial actuating sleeve. The axial movement and the rotary motion: the clutch member has a snapping mode and a disengagement mode with the sliding forward and backward of the backward pulling sleeve; and the rearward pulling sleeve presents a force for axial advance and retreat with respect to a screw, and rotates. The timing mechanism is configured to drive the synchronous rotation of the screw. The limiting member is disposed at a corresponding portion of the screw and the rear sliding sleeve to generate a limiting force for the axial backward sliding state of the backward pulling sleeve.