Attachment arrangement and piece of furniture
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Solution Overview
Problem
Existing furniture attachment arrangements often compromise on design criteria such as manufacturing costs, user-friendliness, stability, and strength, particularly in connecting non-orthogonal furniture parts, where they fail to provide a secure and easy-to-assemble solution.
Innovation Solution
An attachment arrangement featuring a second attachment part with elongated ridges oriented at an angle less than 30° to the first axis, allowing for secure locking and easy alignment, which maintains orientation during insertion and provides a strong, stable connection between furniture parts, even under load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second attachment part uses a conventional design without elongated ridges, then the manufacturing cost is lower and the structure is simpler, but the locking effect and stability are insufficient
Solution Approach 1:
The second attachment part features elongated ridges with curved surfaces that engage with corresponding grooves in the first furniture part. The ridges have a rounded profile that provides a locking effect while distributing stress evenly, preventing brittle failure and enhancing the reliability of the connection without requiring complex additional components.
2Strength
If the attachment arrangement requires precise alignment during insertion, then the connection strength is improved, but the ease of assembly is reduced
Solution Approach 1:
The attachment arrangement incorporates elongated ridges that extend in a direction substantially perpendicular to the insertion direction. This dimensional addition allows the ridges to engage with corresponding grooves and provide lateral guidance during insertion, automatically aligning the first and second furniture parts while maintaining strong connection through the perpendicular ridge-groove engagement.
3Reliability
If the ridges are oriented at a larger angle to the first axis, then the alignment during insertion is easier, but the locking effect under load is reduced
Solution Approach 1:
The ridge plane is oriented at a specific angle between 0° and 30° relative to the first axis, optimizing the balance between alignment ease and locking effect. This angular parameter allows the ridges to effectively engage with grooves during insertion while maintaining sufficient mechanical interlocking strength to resist loads applied to the connected furniture parts.
4Stability of the object's composition
If the attachment arrangement is designed for high strength connection, then the stability is improved, but the manufacturing cost increases
Solution Approach 1:
The attachment arrangement integrates multiple functions into a single second attachment part: the elongated ridges simultaneously provide alignment guidance during insertion, mechanical interlocking through groove engagement, and load distribution across the connection interface. This merging of functions achieves high stability without requiring multiple separate components, thereby controlling manufacturing costs.
Data Source
AI summary
The disclosure relates to an attachment arrangement adapted to connect a first furniture part to a second furniture part. The attachment arrangement comprises a first attachment part adapted to be inserted into a recess in said first furniture part along a first axis, and a second attachment part adapted to be inserted into a recess in said second furniture part by a relative motion along a second axis. The second attachment part comprises at least one elongated ridge having a length and a height extending in a ridge plane, the ridge plane having a normal forming an angle to the first axis, which angle is smaller than 30°, wherein said at least one elongated ridge is formed on top and/or side surfaces of the second attachment part. The disclosure also relates to a piece of furniture comprising a first furniture part, a second furniture part and an attachment arrangement.