Pivoting Drive Head Locking for Multi-Angle Wrench Strength
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Solution Overview
Problem
Conventional wrenches face issues such as handle obstruction, difficulty in securely fitting the drive head, and structural weakness due to strip-shaped slots, requiring additional tools for angle adjustment.
Innovation Solution
A rotational tool locking device with a handle, receiving slot, lateral hole, and locking assembly using a spring and actuating member for easy angle adjustment without additional tools, ensuring structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a strip-shaped slot is set up on the body to allow rotation, then the working head can rotate for multi-angle operation, but the lateral load-bearing strength of the body structure is weakened
Solution Approach 1:
The receiving slot is divided into two separate receiving holes positioned at different locations. The first receiving hole receives the first connecting piece and the second receiving hole receives the second connecting piece. This segmentation allows the slot to be replaced by discrete holes that maintain structural integrity while still enabling rotation through the connecting pieces.
Solution Approach 2:
Connecting pieces are introduced as intermediary components between the receiving holes and the working head. These connecting pieces with connecting sections enable the working head to rotate relative to the body while the receiving holes maintain the structural strength of the body. The connecting pieces act as mediators that transfer the rotational function without compromising the body's lateral load-bearing capacity.
2Reliability
If connecting pieces are used to connect the working head to ear portions, then the working head can be securely attached, but assembly becomes inconvenient requiring separate connection steps
Solution Approach 1:
The first connecting piece and second connecting piece are merged into a single integrated connecting component that can be installed in one operation. This unified design combines the functions of multiple connecting elements, allowing the working head to be securely attached through a single assembly action rather than requiring separate connection steps for each ear portion.
3Adaptability or versatility
If additional tools are used to adjust the rotation angle, then the connecting pieces can be loosened and tightened, but the operation becomes more complex and time-consuming
Solution Approach 1:
The connecting pieces are designed with self-adjusting capabilities through their connection structure with the receiving holes and ears. The geometric arrangement and fit between these components allow the working head to be rotated and secured at different angles without requiring external tools. The connection mechanism serves itself by utilizing the inherent geometry of the parts to enable both secure attachment and angle adjustment.
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
Facilitates convenient and secure angle adjustment of the drive head relative to the handle, enhancing usability and reducing component wear by minimizing prolonged pressure on the locking mechanism.
Implementation Method 1
the rotational tool utilizes the spring's own elasticity to extend and push against the actuating member, causing the stopping tooth of the actuating member to continuously lock between the teeth of the drive head
Implementation Method 2
the pushing part and the arc groove top surface form a second gap. When the operating button is pressed, the pushing arc surface pushes against the arc groove bottom surface of the arc groove of the actuating member, causing the actuating member to displace toward the spring direction and compress the spring to store energy
Data Source
AI summary
A rotational tool locking device includes a handle, a drive head, a locking assembly, and an operating button. The drive head is pivotally mounted at one end of the handle, and the locking assembly is arranged between the handle and the drive head. The operating button is set on the handle and can control the locking assembly to be in a fixed or released state relative to the drive head. When in the released state, the drive head can be easily rotated relative to the handle to a specific angle, presenting different pitch positions.