Scraper Cover Attachment Mechanism for Reliable Blade Protection
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Solution Overview
Problem
Existing scrapers suffer from unstable cover attachment due to a simple concave-convex fitting structure, leading to potential detachment during use and inadequate blade protection.
Innovation Solution
A scraper design featuring a cover with a connection portion, insertion protrusion, and locking device, including first and second clamping members with through grooves and abutting portions, allowing secure and removable attachment to the clamping members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple concave-convex fitting structure is used to attach the cover to the clamping members, then the device complexity is reduced and ease of manufacture is improved, but the reliability of the cover attachment deteriorates and the cover may detach during use
Solution Approach 1:
The attachment mechanism is divided into multiple functional components: connection portions on the cover, corresponding receiving structures on the clamping members, locking devices with abutting portions, and sliding portions moving through through grooves. This segmentation allows each component to perform a specific function while working together to achieve reliable yet manufacturable attachment.
Solution Approach 2:
The locking device incorporates dynamic elements including sliding portions that move through through grooves and abutting portions that can engage or disengage from abutting surfaces. This dynamic mechanism allows the cover to be securely locked during use but easily removed when needed, resolving the contradiction between reliability and ease of manufacture.
2Reliability
If a secure and removable attachment mechanism is implemented with locking devices and sliding portions, then the reliability of cover attachment is improved, but the device complexity increases
Solution Approach 1:
The locking device serves multiple functions simultaneously: it locks the cover to the clamping members through abutting portions, allows for easy release through sliding portions, and guides the sliding portions through through grooves. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while maintaining high reliability.
Solution Approach 2:
The sliding portions are nested within the through grooves of the clamping members, and the locking device is integrated into the cover structure. This nesting arrangement allows the components to work together in a compact configuration, minimizing the overall complexity increase while achieving reliable attachment.
3Object-affected harmful factors
If the cover is securely attached to protect the blade, then blade protection is improved, but the ease of operation for removing and replacing the cover deteriorates
Solution Approach 1:
The locking device acts as an intermediary mechanism between the cover and clamping members. It provides secure locking through abutting portions during normal operation to protect the blade, while allowing easy release when needed by sliding the sliding portions through the through grooves. This intermediary mechanism resolves the contradiction between protection and ease of operation.
Solution Approach 2:
The sliding portions can be manually operated to release the locking mechanism, allowing the user to easily remove the cover when needed. The through grooves guide the sliding portions, providing self-alignment and reducing the effort required for operation. This self-service feature maintains ease of operation while ensuring secure attachment during use.
Data Source
AI summary
A scraper includes a cover, a first clamping member and a second clamping member. The cover has a connection portion and an insertion protrusion. The first clamping member has a first clamping portion and a first through groove. The second clamping member has a second clamping portion and a second through groove. The connection portion of the cover is detachably connected to one side of the first clamping member opposite to the second clamping member. The insertion protrusion inserts through the first through groove and the second through groove and is detachably coupled to the second clamping member.