Integrated Socket Wrench and Puller for Flywheel Detachment
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Solution Overview
Problem
Conventional tools require multiple steps and often fail to efficiently detach a rotary body from a tapered rotary shaft due to the need for separate tools and structural modifications, leading to poor workability.
Innovation Solution
A tool comprising a socket wrench, a puller, and a rotation prevention mechanism that allows for the generation of axial force through the nut's loosening operation, enabling simultaneous detachment or attachment of the rotary body from the rotary shaft without modifying the connection structure or requiring additional members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate tools are used for loosening the nut and removing the rotary body, then the nut can be loosened, but the rotary body cannot be removed in some cases due to tapered fit
Solution Approach 1:
The patent combines the nut loosening function and rotary body removal function into a single integrated tool operation. The puller is detachably connected to the socket wrench, allowing the same tool assembly to both loosen the nut and remove the rotary body through continuous operation, eliminating the need for separate tools and steps.
Solution Approach 2:
The tool assembly serves multiple functions: the socket wrench operates the nut, the puller attaches to the socket wrench to continue the operation, and the bolt connects to the rotary body. This multi-functional design allows one tool to perform both loosening and removal operations that would traditionally require separate specialized tools.
2Strength
If the rotary shaft and rotary body are tapered and fitted to be securely fixed, then secure fixation is achieved, but separate tools and multiple steps are required for detachment
Solution Approach 1:
The tool is segmented into detachable components: a socket wrench portion for operating the nut, a puller portion that attaches to the socket wrench, and a bolt that connects to the rotary body. This segmentation allows each component to perform its specific function while maintaining overall simplicity and avoiding complex integrated designs.
Solution Approach 2:
The puller acts as an intermediary element between the socket wrench and the rotary body. It transfers the operational force from the socket wrench to the rotary body, enabling the removal of the tapered fit without requiring direct manipulation of the tapered surfaces or complex extraction mechanisms.
3Ease of operation
If conventional tools are used for loosening the nut, then the nut can be operated, but additional separate members and structural modifications are required for rotary body removal
Solution Approach 1:
The tool assembly is designed to be self-sufficient for both attachment and detachment operations. The puller and bolt configuration allows the tool to perform all necessary functions without requiring modifications to the rotary shaft or rotary body structures, and without needing additional separate members or components.
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
This solution reduces the number of steps required for attachment and detachment, improves workability by generating axial force through the nut's rotation, and allows for seamless removal or fastening of the rotary body without additional structural changes or separate members.
Implementation Method 1
a socket wrench (10) which is connected to the nut (N) to operate the nut (N) to rotate
Implementation Method 2
a puller (20) which is detachably connected to the socket wrench (10) to operate the socket wrench (10) to rotate
Data Source
AI summary
An attaching and detaching tool for removing a flywheel connected to a crankshaft of an internal combustion engine using a nut, in which the flywheel is removed by pulling the flywheel with an axial force generated in the nut when the nut is loosened, is provided. A socket wrench is coupled to a nut connected to a crankshaft and a flywheel is coupled to a puller assembled to the socket wrench via a bolt, and then the socket wrench is rotated while the rotation of the puller is stopped by a spinner handle, whereby the nut is loosened and the flywheel is removed.