Rotating Protective Cover with Locking Mechanism for Power Tools
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Solution Overview
Problem
Conventional power tools with fixed protective covers cannot adjust the angle of the protective cover, leading to potential spraying of waste material towards the user during operation at various angles.
Innovation Solution
A protective device with a fixing base, restricting ring, springs, protective cover, and locking member that allows the user to adjust the angle of the protective cover by rotating it, using a locking mechanism to facilitate movement and secure the cover in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the protective cover is fixedly installed on the power tool, then the structure is simple and stable, but the user cannot adjust the angle of the protective cover, causing waste material to spray toward the user when processing at certain angles
Solution Approach 1:
The protective cover is designed to be rotatable relative to the fixing base, transforming the fixed structure into a dynamic one that can adjust its angle. The locking mechanism allows the cover to be positioned at different angles and secured in place, providing adaptability while maintaining structural stability during operation.
Solution Approach 2:
The protective cover system is divided into separate components: the fixing base, the rotatable protective cover, and the locking mechanism. This segmentation allows each component to perform its specific function independently, enabling angle adjustment without complicating the overall structure.
2Ease of operation
If the protective cover is made rotatable to allow angle adjustment, then the user can adjust the angle to prevent waste material spraying, but the structure becomes more complex with additional locking mechanisms
Solution Approach 1:
The locking mechanism is designed to be operated by the user through a simple action on the operating portion, which automatically engages or disengages the blocking portion with the positioning projections. This self-service design allows easy angle adjustment without requiring complex external mechanisms or tools.
Solution Approach 2:
The locking member acts as an intermediary between the user's operating action and the protective cover's positioning. By manipulating the operating portion, the user controls the blocking portion's position, which in turn locks or releases the protective cover at the desired angle, simplifying the interaction.
3Reliability
If the locking member blocks the restricting ring from moving toward the abutting surface, then the protective cover remains stable, but the user cannot rotate the protective cover to adjust the angle
Solution Approach 1:
The locking mechanism provides dynamic control over the restricting ring's movement. When the blocking portion engages with the positioning projections, the system is locked and stable. When the blocking portion is moved away, the system becomes unlocked and rotatable, allowing angle adjustment while maintaining reliability during operation.
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 the user to adjust the protective cover's angle easily and securely, reducing exposure to waste material during power tool operation, enhancing safety and usability.
Implementation Method 1
a plurality of springs (36) which are disposed between the first end (28) of the restricting ring (26) and the abutting surface (142)
Data Source
AI summary
A protective device of a power tool includes a fixing base having a tube portion and an abutting surface, a restricting ring fitting around the tube portion, several springs disposed between the abutting surface and a first end of the restricting ring, a protective cover having several second projections and several second recesses, and a locking member. The first end has an abutting portion. A second end of the restricting ring has several first projections and several first recesses matching with the second projections and the second recesses. The restricting ring is located between the protective cover and the abutting surface. When a blocking portion of the locking member moves to a first position, the blocking portion restricts the restricting ring from moving toward the abutting surface. When the blocking portion moves to a second position, the blocking portion leaves a position between the abutting surface and the abutting portion.