Torque Wrench Limit Unit for Switchable Slip and Lock Modes
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Solution Overview
Problem
Conventional torque wrenches lack a control mechanism to limit the operation of the clutch device, resulting in a torque slip function when the adjustable grip is rotated, limiting their versatility.
Innovation Solution
A torque structure with a limit unit that can be rotated between a disengaging position for torque slip function and an engaging position to restrict movement, allowing the tool to function as both a torque wrench and a common wrench.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the functional lock is in the unlocked position allowing the adjustable grip to rotate freely, then the tool member has torque slip function relative to the hollow main shaft, but the tool lacks versatility as it cannot function as a common wrench
Solution Approach 1:
The patent applies multi-functionality by enabling the torque wrench to operate in two distinct modes: torque slip mode (with clutch device engaged) and common wrench mode (with limit unit restricting movement). The limit unit can be rotated to different positions to switch between these functions, allowing the same tool to serve both as a torque wrench and a common wrench, thereby improving versatility without requiring separate tools
2Adaptability or versatility
If the limit unit restricts movement of the third body to eliminate torque slip, then the tool functions as a common wrench, but the torque slip function is lost
Solution Approach 1:
The patent applies dynamics by making the limit unit rotatable between different positions. When the limit unit is in one position, it restricts movement of the third body relative to the second body, eliminating torque slip for common wrench operation. When rotated to another position, the restriction is released, allowing torque slip function. This dynamic repositioning enables operational flexibility while maintaining functional versatility
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
Enhances versatility by providing two distinct functions depending on the position of the limit unit, allowing for either torque slip or no slip relative to the second body, thus expanding the tool's operational capabilities.
Implementation Method 1
a first elastic member (27), wherein the third body (60) has a torque slip function relative to the second body (20) when the limit unit (80) is in the disengaging position
Implementation Method 2
the compression spring 62 pushes the locking ring 61 toward the tool member 20, whereby the positioning ball 65 is pushed by the pushing face 612 and stopped by the locating groove 13 for limiting the rotation of the adjustable grip 30
Data Source
AI summary
A torque structure includes a first body, a second body, a first elastic member, a third body, and a limit unit. The second body is provided with a second receiving chamber, a first pivot portion, at least one first positioning portion and at least one second positioning portion. The first elastic member is received in the second receiving chamber. The third body is provided with a drive portion, a pivot seat, a second pivot portion, and a first limit portion. The limit unit is assembled with the second body and the third body and rotated between a disengaging position where the third body is unlocked from the second body and has a torque slip function relative to the second body, and a engaging position where the third body is locked by the second body and does not have a torque slip function.