Removable Polymer Sleeve for Level Body Protection
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Solution Overview
Problem
Levels, such as spirit levels, face damage from harsh environments like concrete and dust, which can scratch or stick to their precision surfaces, and existing solutions lack easy and effective methods for protection without damaging the tool.
Innovation Solution
A level design featuring removable and interchangeable outer sleeves with a rail-and-channel configuration that allows for secure attachment and removal without adhesives or tools, using metal for the level body and polymer for the sleeve, providing protection and additional functionality like anti-slip surfaces and tool features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the level body is made from metal material for strength, then the level body strength is improved, but the precision surfaces are susceptible to damage from harsh environments like concrete and dust
Solution Approach 1:
A removable protective cover made of polymer material is introduced as an intermediary between the metal level body and the harsh environment. The cover includes engagement features (protrusions fitting into recesses or channels) that securely attach it to the level body, providing protection for precision surfaces while allowing easy removal and replacement.
2Object-affected harmful factors
If a protective cover is added to protect precision surfaces, then protection from environmental damage is improved, but the device complexity increases
Solution Approach 1:
The protective cover is designed as a separate, removable component rather than an integrated part of the level body. This segmentation allows the cover to be independently manufactured, attached only when needed, and easily replaced without affecting the core level body structure or functionality.
Solution Approach 2:
The protective cover serves as a temporary intermediary layer that can be applied and removed as needed. The engagement features (protrusions and recesses/channels) provide secure attachment with minimal complexity, allowing the cover to be easily coupled and decoupled from the level body.
3Reliability
If adhesives or tools are used to attach the protective cover, then the attachment security is improved, but the ease of operation deteriorates
Solution Approach 1:
The engagement features (protrusions fitting into recesses or channels) enable the protective cover to attach and detach through simple mechanical interference without requiring external tools, adhesives, or complex fastening mechanisms. The user can easily couple and decouple the cover by hand.
4Object-affected harmful factors
If the sleeve is made from polymer material for protection, then the protection capability is improved, but the durability under harsh conditions may be reduced
Solution Approach 1:
The protective cover is designed as a replaceable component that can be easily discarded and replaced when worn or damaged. This approach is more economical than repairing or replacing the entire metal level body, as the polymer cover serves its protective function for a reasonable period and then can be swapped out.
Solution Approach 2:
The solution combines polymer material for the protective cover with metal material for the level body. The polymer provides protection against scratches and adhesion from concrete and dust, while the metal body maintains structural strength and durability. The engagement features allow these different materials to work together effectively.
Data Source
AI summary
A tool, such as a level, including one or more covers or sleeves is provided. The level body and sleeve each have a cooperating engagement structure that allows the sleeve to be removably coupled to the level body. A level kit including a level body and a plurality of removable sleeves is also provided.