Concentric Element Bonding Structure for Uniform Adhesive Filling
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Solution Overview
Problem
Existing methods for bonding concentric elements often result in uneven adhesive distribution and the formation of excess adhesive beads, which can weaken the bond and impair the functionality of components, especially in complex systems like auto drain valves.
Innovation Solution
The design incorporates alpha and beta plugs and void faces that allow adhesive injection into a defined void between concentric elements, minimizing movement and ensuring a uniform adhesive layer, with passages and adhesive guide means to direct and fill the adhesive effectively, preventing air bubbles and excess adhesive formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adhesive is applied to bonding faces and elements are pushed together until interference occurs, then the bonding faces are brought into close contact, but uneven adhesive distribution and excess adhesive beads form
Solution Approach 1:
The bonding portion is segmented into distinct functional zones: a void space for adhesive placement, bearing faces for load transmission, and plugs for positioning. This segmentation allows the adhesive to be contained in a specific region rather than spreading uncontrollably across the entire bonding interface, preventing excess adhesive beads while ensuring uniform distribution in the intended bonding zone.
Solution Approach 2:
The void space is pre-formed between the bonding faces before adhesive application. This preliminary structuring of the bonding interface creates a defined cavity that guides and contains the adhesive, ensuring it remains in the correct position during assembly and curing, thereby preventing uneven distribution and excess adhesive formation.
2Measurement precision
If the first bonding portion is pushed into the second bonding portion until interference prevents further insertion, then the elements achieve desired relative positioning, but adhesive may be extruded and bond strength compromised
Solution Approach 1:
The bonding interface is divided into distinct functional zones: the void space accommodates adhesive without requiring extrusion, bearing faces provide precise positioning through controlled contact, and plugs maintain accurate relative positioning. This segmentation allows the elements to be assembled to precise positions without forcing adhesive out, thereby maintaining bond strength while achieving accurate positioning.
Solution Approach 2:
The void space acts as an intermediary chamber between the bonding faces, providing a controlled environment for adhesive placement. This intermediary structure allows the bonding faces to be brought into close contact while preventing direct compression of adhesive, thus avoiding extrusion and preserving bond strength while achieving precise positioning.
3Manufacturing precision
If adhesive is injected into a defined void with passages for injection, then uniform adhesive distribution is achieved, but the bonding structure becomes more complex
Solution Approach 1:
The bonding structure is segmented into functional zones including void spaces and passages that work together as an integrated adhesive delivery system. This segmentation creates a built-in mechanism for uniform adhesive distribution without requiring external complex equipment, as the structure itself guides the adhesive flow and ensures even coverage across the bonding interface.
Solution Approach 2:
The passages and void spaces serve multiple functions: they guide adhesive injection, contain the adhesive during curing, and maintain the structural integrity of the bonding interface. This multi-functionality reduces the need for additional separate components or complex external systems, achieving uniform adhesive distribution while minimizing overall structural complexity.
Data Source
AI summary
A component comprising a first concentric element and a second concentric element is disclosed. The first and second concentric elements are positioned relative to each other in the positions in which they are to be bonded together. The first concentric element comprises a first bonding portion (48) with a first bonding face (50), and the second concentric element comprises a second bonding portion (58) with a second bonding face (60), a first passage (62), and a second passage (64). The second bonding portion (58) partially surrounds the first bonding portion (48) and the first and second bonding faces (50, 60) face each other. The first and second bonding faces (50, 60) comprise a first and second void face (56, 61) respectively. Collectively the first and second bonding faces (50, 60) comprise an alpha plug (52) having an alpha plug face, a beta plug (54) having a beta plug face, an alpha bearing face, and a beta bearing face, in which the alpha plug face is in sliding contact with the alpha bearing face and the beta plug face is in sliding contact with the beta baring face, the alpha plug (52) is integral with one of the first or second void faces (56, 61) and the alpha bearing face is integral with the other of the first or second void faces (56, 61), the beta plug (54) is integral with one of the first or second void faces (56, 61) and the beta bearing face is integral with the other of the first or second void faces (56, 61), and the alpha and beta plugs (52, 54) and first and second void faces (56, 61) collectively define a void. The first and second passages (62, 64) each extend through the second concentric element from a mouth which opens onto the void to a mouth in an accessible surface of the second concentric element.