Flexible Ratchet Wrench Positioning Mechanism
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Solution Overview
Problem
Conventional ratchet wrenches with rotatable drive heads have complex structures that complicate operations, especially in tight spaces, and fail to smoothly engage objects due to dead corners or limited access.
Innovation Solution
A ratchet wrench with a flexible positioning structure featuring a rotary head and locking button, where a flexible fastener allows quick fastening and releasing of the rotary head through deformation, enabling it to lock securely without additional operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rotatable drive head is added to allow flexible positioning, then the wrench can access tight spaces and dead corners, but the structure becomes complicated and operations become inconvenient
Solution Approach 1:
The drive head is designed to be rotatable relative to the handle, allowing dynamic adjustment of the drive head's orientation to access tight spaces and dead corners. The locking mechanism enables the drive head to be fixed at desired angles during operation, combining rotational flexibility with operational stability.
Solution Approach 2:
The ratchet wrench is divided into separable components: the handle, the rotatable drive head, and the locking mechanism. This segmentation allows independent optimization of each component's function while reducing overall structural complexity compared to integrated designs.
2Reliability
If a locking mechanism is added to secure the rotary head, then safety is improved by preventing free rotation, but the operation becomes more complex requiring additional steps
Solution Approach 1:
The locking mechanism is designed to be self-actuating through a spring-loaded button that automatically engages with positioning recesses when the drive head is rotated to specific angles. The spring force automatically pushes the button into engagement with the recesses, eliminating the need for additional manual locking operations.
Solution Approach 2:
A spring-loaded button acts as an intermediary between the user's rotation action and the locking function. The button mediates the engagement between the drive head and the locking mechanism, providing automatic locking without requiring direct user intervention in the locking process.
3Reliability
If multiple positioning recesses are provided for secure locking, then the locking reliability is improved, but the device structure becomes more complex
Solution Approach 1:
Multiple positioning recesses are provided on the drive head, each capable of engaging with the locking mechanism. This multi-functional positioning system allows the drive head to be securely locked at multiple different angles and orientations, providing universal adaptability for various operational requirements while using a simple recess-engagement mechanism.
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
The flexible positioning structure simplifies operations, ensures safety by locking the rotary head against free rotation, and enhances convenience by allowing easy engagement and disengagement, addressing the complexity and access issues of conventional ratchet wrenches.
Implementation Method 1
The flexible fastener is flexibly movable in association with movement of the latch bar
Data Source
AI summary
A ratchet wrench having a flexible positioning structure includes a drive bar, a rotary head, and a locking button. The drive bar includes a fork arm, an axial hole, and a radial hole communicating with the axial hole. The rotary head is pivotally connected to the fork arm; the rotary head includes a round housing, a plurality of positioning recesses disposed on the round housing, and a pivot axis passing through the rotary head and two ends of the fork arm. The pivot axis is perpendicular to the radial hole. The locking button includes a flexible fastener inserted through the radial hole and a latch bar disposed in the axial hole. The flexible fastener is flexibly movable in association with movement of the latch bar, so that the latch bar is engaged with or released from any of the positioning recesses.