Ratchet Wrench Angle Adjusting Structure
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Solution Overview
Problem
Ratchet wrenches face difficulties in applying torque to threaded fasteners in limited positions or angles due to their integrated metal handle design, which restricts maneuverability and efficiency.
Innovation Solution
An angle adjusting structure for a ratchet wrench comprising a shank with a pivot socket and limiting portion, a driving head with meshing teeth, a located member with engagement teeth and sliding rail, and a spring and detent member, allowing for adjustable rotation angles and enhanced stability through meshing and elastic engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ratchet wrench uses an integrated metal handle design, then the manufacturing cost is reduced, but it is difficult to force threaded fasteners in the limited position or angle
Solution Approach 1:
The ratchet wrench handle is divided into a fixed portion and a rotatable portion that can rotate relative to each other. The rotatable portion can be adjusted to different angles and locked in place using engagement protrusions and engagement grooves, enabling the tool to adapt to limited positions while maintaining an integrated design structure.
2Device complexity
If the ratchet wrench handle is integrated design, then the structure is simplified, but the maneuverability and efficiency are restricted
Solution Approach 1:
The rotatable portion of the handle is designed to rotate dynamically around the fixed portion, allowing the user to adjust the angle according to the working environment. The engagement protrusions and grooves provide locking positions to maintain stability during operation, combining flexibility with structural integrity.
3Adaptability or versatility
If the ratchet wrench allows angle adjustment, then it can accommodate various threaded fasteners, but the device complexity increases
Solution Approach 1:
The spring-loaded detent mechanism automatically engages the rotation limiting protrusions with the engagement grooves when the rotatable portion is turned, providing self-locking at predetermined angles without requiring additional manual intervention or complex control systems.
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 stable and smooth operation of the ratchet wrench, allowing single-handed use and adjustable rotation angles to accommodate various threaded fasteners, improving handling and reducing the risk of looseness.
Implementation Method 1
a spring (400) and a detent member (500), wherein the spring (400) is located in the limiting hole (121)
Data Source
AI summary
An angle adjusting structure of a ratchet wrench includes a shank, a driving head, a located member, a spring and a detent member. The shank includes a pivot socket and a limiting portion. The pivot socket has a first pivoting portion and a bottom surface, the limiting portion is adjoined to the pivot socket and includes a limiting hole. The driving head includes a second pivoting portion which is pivotally connected to the first pivoting portion and has a plurality of meshing teeth. The located member is slidably located on the bottom surface. The located member includes a plurality of engagement teeth and a sliding rail, the engagement teeth is for meshing the meshing teeth, the sliding rail is correspondingly located on an outside of the limiting hole. The spring is located in the limiting hole. The detent member is connected to the spring and the sliding rail.