Putty Scraper Sealing Piece for Secure Blade Replacement
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Solution Overview
Problem
Existing putty scrapers pose a safety hazard due to the difficulty in removing and replacing blades, which requires excessive force and can lead to accidental injuries.
Innovation Solution
A putty scraper design featuring a handle with a fixed plate and covers, incorporating a sealing piece and positioning structure that allows for easy unlocking and locking of the blade, preventing accidental detachment and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cover is tightly fitted on the handle to secure the blade, then the blade fixation reliability is improved, but the ease of operation deteriorates because excessive force is needed to disassemble the cover
Solution Approach 1:
The cover is divided into a main body and a detachable sealing piece. The sealing piece can be separated from the cover body, allowing the gap to be opened without removing the entire cover. This segmentation enables easy access to the blade while maintaining the secure fit of the cover body on the handle.
Solution Approach 2:
The sealing piece is extracted as a separate component from the cover. By removing only the sealing piece rather than the entire cover, the design allows easy access to the blade insertion gap while maintaining the secure connection between the cover body and handle.
2Ease of operation
If excessive force is applied to disassemble the cover to access the blade, then the ease of operation is improved, but the object-generated harmful factors worsen due to safety hazards from the sharp blade
Solution Approach 1:
By segmenting the cover into a main body and a detachable sealing piece, the design allows safe access to the blade without requiring excessive force. The sealing piece can be removed independently, providing a safe and easy way to access the blade without exposing the user to the sharp blade during the disassembly process.
Solution Approach 2:
The sealing piece is designed to be detachable in advance, preparing the system for safe blade access. This preliminary design feature allows the sealing piece to be removed before blade handling, preventing accidental injuries from sharp blades during the disassembly process.
3Ease of manufacture
If the blade is inserted through the gap from the front end, then the ease of manufacture is improved, but the device complexity increases due to the inverted structure that prevents blade extraction
Solution Approach 1:
The cover is segmented into a main body and a detachable sealing piece. This segmentation provides a simple solution for blade extraction: the sealing piece is removed to open the gap, allowing the blade to be pulled out from the front end without complex mechanisms or additional components.
Data Source
AI summary
A putty scraper is provided, which includes a sealing piece and a positioning structure provided on the sealing piece. The sealing piece has a sealing state when it is fixed on the positioning structure and an unlocking state when it is detached from the positioning structure. In the sealing state, one end of the sealing piece blocks an end of a gap and prevents a blade from being detached from a handle at the end of the gap. In the unlocking state, the end of the gap is exposed. When it is necessary to extract or replace the blade, the sealing piece is pushed by hand and a positioning block is detached from a positioning groove, and then the sealing piece is rotated to expose the end of the gap. At this time, the blade can be extracted out from the end of the gap.