Rotatable Ratchet Wrench Barrel with Adjustable Locking Mechanism
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Solution Overview
Problem
Conventional ratchet wrenches have a fixed drive head orientation, limiting their applicability to various operating environments and reducing operational efficiency.
Innovation Solution
A ratchet wrench design featuring a rotatable barrel with adjustable positioning portions, a driving assembly with a ratchet mechanism, and a locking mechanism that allows for different driving angles and orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the drive head orientation is fixed perpendicular to the handle, then the structural design is simple, but the adaptability to various operating environments deteriorates
Solution Approach 1:
The drive head is made rotatable relative to the handle through a ratchet mechanism, allowing the orientation to be dynamically adjusted to different angles rather than being fixed. This enables adaptation to various operating environments while maintaining a relatively simple overall structure.
Solution Approach 2:
The wrench is divided into separate functional modules: the handle, the drive head, and the ratchet mechanism. This segmentation allows the drive head to be independently positioned at different angles while keeping the handle structure simple, thus improving adaptability without significantly increasing overall complexity.
2Productivity
If the drive head orientation cannot be adjusted, then the device complexity is low, but the operational efficiency deteriorates
Solution Approach 1:
The ratchet mechanism enables the drive head to be quickly adjusted to different orientations during operation, improving operational efficiency without requiring complex adjustment mechanisms. The unidirectional ratchet teeth allow for easy positioning and locking at various angles.
3Ease of operation
If the drive head orientation is fixed, then the manufacturing precision requirements are low, but the ease of operation deteriorates
Solution Approach 1:
The ratchet mechanism automatically maintains the drive head at the selected orientation through its unidirectional locking action. The meshing teeth provide self-locking capability, eliminating the need for complex locking mechanisms or high-precision adjustment systems, thus improving ease of operation without significantly increasing manufacturing precision requirements.
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 flexible positioning of the driving assembly to accommodate various operating environments, enhancing operational convenience and efficiency.
Implementation Method 1
a locking elastic member received in the rod body, and a slidable member radially inserted in the rod body... the locking elastic member biasing the pin toward the barrel
Implementation Method 2
the ratchet assembly including a plurality of meshing teeth meshed with the plurality of limitation teeth, the ratchet assembly being movable by operation of the lid
Data Source
AI summary
A ratchet wrench is provided, wherein the ratchet wrench includes: a rod body including a working end and a grip; a barrel rotatably connected to the working end and including limitation teeth and a positioning portion; a driving assembly rotatably disposed within the barrel and including a driving member including a connection portion, a lid covered on an end of the barrel, a fastener connecting the driving member and the lid, and a ratchet assembly including meshing teeth meshed with the limitation teeth, the fastener being axially non-movable relative to the driving member; and a locking mechanism including a pin movably received in the rod body, a locking elastic member received in the rod body and biasing the pin to interlock with the positioning portion, and a slidable member movably inserted in the rod body and including a buckle member buckled with the pin.