Power Tool Output Shaft Quick Release for Standard Attachments
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Solution Overview
Problem
Traditional angle grinding tools require cumbersome installation and removal of working attachments using tools like shaft locks and wrenches, limiting usability and increasing costs due to the need for specially customized quick release structures that are not compatible with standard attachments.
Innovation Solution
A power tool with a mounting device and an operating member that allows for quick attachment and detachment of working tools without additional tools, featuring a three-position operating mechanism and elastic members to secure the attachment, along with a standard circular mounting port for compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a quick release structure is designed to enable tool-free mounting and removal, then ease of operation is improved, but adaptability deteriorates because the working attachment must be specially customized and cannot be used with standard attachments
Solution Approach 1:
The mounting device is designed with a standardized circular mounting port that can accommodate both specially customized attachments and standard attachments with circular mounting ports. The quick release structure integrates with the existing standard attachment interface, allowing one tool to serve multiple attachment types without requiring separate customized components for each attachment style.
2Productivity
If a quick release structure is designed for easy mounting and removal, then productivity is improved, but device complexity increases due to additional components required
Solution Approach 1:
The quick release structure merges with the existing mounting device components rather than adding entirely separate mechanisms. The operating member integrates with the mounting port structure, and the locking mechanism combines with the flange assembly, reducing the number of discrete components while maintaining quick release functionality.
Solution Approach 2:
The quick release structure enables the user to mount and remove working attachments independently without requiring external tools such as shaft locks or wrenches. The operating member allows the user to directly control the mounting and removal process through simple manual operation, improving productivity while keeping the added complexity manageable through user-friendly design.
3Reliability
If traditional mounting methods using shaft lock and wrench are used, then reliability is maintained, but ease of operation deteriorates due to troublesome multi-step process
Solution Approach 1:
The invention extracts the essential locking function from the traditional multi-step process involving shaft locks and wrenches. The quick release structure isolates the mounting and removal operations into a single integrated mechanism that can be controlled by one operating member, eliminating the need for multiple separate tools while maintaining secure attachment through the locking member and elastic member system.
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
Facilitates easy and efficient mounting and removal of working attachments, reducing labor and costs by allowing tool-free operation and compatibility with standard attachments.
Implementation Method 1
a first elastic member disposed in the countersunk hole and subjected to compression, and configured to apply an elastic force to the output shaft
Implementation Method 2
a second elastic member always in a compressed state to apply an elastic force to the output shaft
Data Source
AI summary
A handheld power tool includes a grip for a user to hold; an output shaft rotatable about a first axis; a mounting device for mounting a working attachment to the output shaft, where the working attachment has a mounting port that matches the output shaft; and an operating member capable of driving the output shaft to move along the direction of the first axis to lock or loosen the working attachment. The operating member could be located at least at a first position, a second position and a third position. When the operating member is located at the first position, the working attachment is locked; when the operating member moves from the first position to the second position, the output shaft moves downward along the first axis by a first preset distance. The third position is different from the first position and the second position.