Scraper with cover
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Solution Overview
Problem
Existing scrapers with simple concave-convex fitting structures for the cap suffer from insecure connections, which can detach due to impact, leading to an unsecure cover for the blade.
Innovation Solution
A scraper design featuring a cover with a connection portion and an insertion protrusion, along with first and second clamping members and a locking device, providing a secure detachable attachment mechanism to ensure the cover remains securely attached even under impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple concave-convex fitting structure is used for the cap, then the device complexity is reduced, but the reliability of the connection deteriorates as it may detach due to impact
Solution Approach 1:
The connection structure is divided into multiple functional segments: the connection portion with first and second connecting parts, the locking device with sliding portion and abutting portions, and the insertion protrusion with insertion and hook sections. Each segment performs a specific function, collectively providing secure connection while maintaining reasonable complexity
Solution Approach 2:
The locking device is pre-configured with the sliding portion positioned to engage the abutting portions, and the insertion protrusion is designed with the hook section ready to engage the second clamping member. This preliminary arrangement ensures that upon assembly, the connection is automatically secured without requiring additional actions, thus improving reliability without significantly increasing operational complexity
2Reliability
If a secure detachable attachment mechanism is implemented, then the reliability of the cover attachment is improved, but the device complexity increases
Solution Approach 1:
The locking function and the connection function are merged into a single integrated attachment mechanism. The sliding portion of the locking device works in conjunction with the connection portion and insertion protrusion to provide both secure attachment and easy detachment capabilities within one unified structure, rather than requiring separate locking and connecting mechanisms
Solution Approach 2:
The attachment mechanism incorporates dynamic elements that allow it to transition between locked and unlocked states. The sliding portion can move along the groove to engage or disengage the abutting portions, and the flexible insertion section can deform to facilitate insertion and removal, providing secure attachment during use while enabling easy detachment when needed
Data Source
AI summary
A scraper includes a cover, a first clamping member, a second clamping member, and a locking device. The cover has a connection portion and an insertion protrusion. The first clamping member has a first through groove, and the second clamping member has a second through groove. The locking device has a sliding portion slidably arranged in the first through groove and the second through groove. The connection portion of the cover is detachably connected to the side of the first clamping member opposite to the second clamping member, and the insertion protrusion inserts through the first through groove and the second through groove and is detachably coupled with the second clamping member.