Ratchet Wrench Integrating Restraining Block for Even Force Distribution
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Solution Overview
Problem
Conventional ratchet wrenches have a large disparity in size ratio between the push block and recessed portions, leading to uneven force application, potential operational failure, and excessive component complexity, increasing manufacturing costs and assembly difficulties.
Innovation Solution
A ratchet wrench structure with a main body featuring an accommodating groove, stop groove, and insert groove, where a ratchet wheel with gear teeth is housed, and a restraining block with longitudinal recessed portions is slidably mounted, accompanied by a pivotally assembled actuating member with a rectangular position-limiting groove and a rectangle-shaped elastic member, allowing for even force distribution and reduced component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the push block area is made large to improve force application, then the force application area is improved, but the component size and complexity increase excessively
Solution Approach 1:
The patent merges the push block and recessed portion into a single integrated restraining block component. The restraining block includes a body portion with gear teeth and a positioned portion with recessed portions that directly receive the elastic piece, eliminating the need for separate push block and recessed portion components. This integration maintains effective force application while reducing component count and size.
Solution Approach 2:
The restraining block serves multiple functions simultaneously: it engages with the ratchet wheel via gear teeth, provides the elastic piece with recessed portions for bidirectional pushing, and acts as the force transmission element. This multi-functionality consolidates what were previously separate components into a single universal element, reducing overall device complexity.
2Reliability
If multiple separate components are used to improve force distribution, then force distribution is improved, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The patent combines multiple functional components into a single restraining block that includes integrated gear teeth for ratchet engagement and recessed portions for elastic piece interaction. This merging reduces the number of separate parts that need to be manufactured and assembled, lowering manufacturing cost while maintaining reliable force distribution through the integrated structure.
Solution Approach 2:
The restraining block is segmented into functional zones: a body portion with gear teeth for ratchet wheel engagement and a positioned portion with recessed portions for elastic piece interaction. This segmentation allows the single component to perform multiple functions with proper force distribution, eliminating the need for multiple separate components while maintaining manufacturing simplicity.
3Ease of operation
If the push block and recessed portion are designed with large area disparity, then the pushing action is improved, but the structure becomes unstable and prone to failure
Solution Approach 1:
The patent merges the push block and recessed portion into an integrated restraining block where the recessed portions are formed as part of the block's body. This integration ensures that the recessed portions are properly positioned and sized relative to the push block, eliminating the instability caused by large area disparities while maintaining effective pushing action through the unified structure.
Solution Approach 2:
The restraining block features localized recessed portions with specific dimensions and positions that are optimized for receiving the elastic piece. These recessed portions are strategically located to ensure proper force transmission while maintaining structural stability, avoiding the problems associated with excessively large area disparities found in conventional designs.
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 design ensures even force application between the ratchet wheel and the restraining block, preventing operational failures and simplifying the component structure, thereby enhancing reliability and reducing manufacturing complexity.
Implementation Method 1
an elastic member mounted in the position-limiting groove, the elastic member being rectangle-shaped corresponding with the rectangular position-limiting groove and further, the longitudinal height of the elastic member is approximately corresponding with the height of the recessed portion of the restraining block
Data Source
AI summary
A ratchet wrench structure includes a main body provided therein with a ratchet wheel, an actuating member and a restraining block positioned between the ratchet wheel and the actuating member. The restraining member has one side provided with two recessed portions, and the actuating member is provided with a position-limiting groove corresponding with the recessed portion, and an elastic member. When the actuating member is rotated, the elastic member will be actuated to push the recessed portion to have its front edge longitudinally and evenly pressing the recessed portion to enable the elastic member to support the restraining block in its entirety. Further, when the restraining block is stressed by rotation of the ratchet wheel, the restraining block can carry out reciprocating movement because of extension and contraction of the elastic member. Thus, the ratchet wrench structure can be simplified in number of components.