Double Connector Assembly for Tool-Free Butt Joint Alignment
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Solution Overview
Problem
Existing connectors for butt-joining components, such as furniture parts, require tools and may not ensure secure alignment in varying panel thicknesses, leading to potential misalignment and instability in the connection.
Innovation Solution
A double connector design featuring two identical U-shaped bracket parts that spread outward when inserted into bores, locking securely with a 90° rotation and edge collars that compress inward, ensuring tool-free assembly and alignment in any position, with optional glue for added stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional connectors are used for butt-joining components, then connection is achieved, but tools are required and alignment may be imprecise in varying panel thicknesses
Solution Approach 1:
The connector performs self-alignment through its geometric design where the first bore and second bore are positioned at specific distances from the free ends, enabling automatic centering during insertion without requiring external alignment tools or operations
Solution Approach 2:
The connector is divided into distinct functional segments: first end sections for insertion into bores, second end sections for spreading and locking, and intermediate portions with bracket arms. This segmentation allows each part to perform its specific function independently, ensuring reliable connection through coordinated action of multiple specialized elements
2Adaptability or versatility
If connectors are designed to work with varying panel thicknesses, then universal applicability is improved, but maintaining precise alignment becomes more difficult
Solution Approach 1:
The connector incorporates dynamic elements including spring arms that can flex and adjust, and a spreading mechanism that adapts to different bore configurations. The bracket arms with their specific geometries allow the connector to dynamically adjust its position and orientation during insertion, maintaining precise alignment regardless of panel thickness variations
Solution Approach 2:
The connector design with identical first and second end sections enables it to function universally across different panel thicknesses and material types. The symmetric design allows insertion from either direction and adaptation to various bore configurations, making it a multi-functional solution applicable in furniture, automotive, and medical industries
3Strength
If the connector uses spreading mechanism for secure anchoring, then connection strength is improved, but the complexity of the connector structure increases
Solution Approach 1:
The connector merges multiple functions into a single integrated structure: the bracket arms serve both as structural support elements and as the spreading mechanism for anchoring. The first end sections and second end sections are integrated into the same continuous piece, eliminating the need for separate anchoring components and reducing overall structural complexity while maintaining high anchoring strength
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The connector provides a secure, tool-free, and universally applicable solution for fastening components, ensuring alignment and stability regardless of panel thickness, with reduced assembly complexity and increased usability across various industries.
Implementation Method 1
the first end sections of the two connector parts are each inserted into the bores of the components and are each spread outward therein by the second end sections of the connector parts pushed together
Implementation Method 2
the two bracket arms with their increasing outer diameter are compressed to the bore diameter when entering the bore, as a result of which the edge collars are also moved radially inwards
Data Source
Figure 1~2b
Figure 3a~3c
Figure 4~5b
AI summary
A double connector (1) according to the invention for butt-joining two parts (2a, 2b) comprises two connector parts (4a, 4b) which can be pushed together into a locked assembled position and each of which includes an expandable first end portion (5) for insertion into a bore (3a, 3b) in one part (2a, 2b), a second end portion (6) for expanding the first end portion (5) of the other connector part in the assembled position, and at least one locking portion (9, 10) for interlocking the two connector parts (4a, 4b) in the assembled position.