Exhaust Housing Shell Interlock Without Folded Edge Projections
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Solution Overview
Problem
Existing exhaust system housings for internal combustion engines require complex folding processes and outwardly projecting edges for positive-locking connections, which complicate assembly and consume installation space.
Innovation Solution
A housing configuration using meshing straps and openings that establish a positive-locking connection between two half shell areas without the need for outwardly projecting edges, where the straps mesh with openings from the outside and extend internally to ensure a stable bond, allowing for a simpler and more compact assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If outwardly projecting folded edge areas are used for positive-locking connections, then stable connection between housing shell areas is achieved, but device complexity and assembly difficulty increase
Solution Approach 1:
The connection area is segmented into discrete meshing elements (meshing openings and meshing straps) rather than using continuous folded edges. This segmentation allows for simpler individual components that assemble through interlocking meshing patterns, reducing the complexity of the overall folding process while maintaining connection stability.
Solution Approach 2:
Instead of creating outwardly projecting folded edges that extend beyond the housing surface, the invention inverts the approach by using meshing straps that extend inwardly or lie substantially within the plane of the housing. This inversion eliminates the need for complex outward folding while achieving the same positive-locking effect through internal meshing.
2Stability of the object's composition
If outwardly projecting folded edge areas are used for connections, then positive-locking connection is achieved, but installation space consumption increases
Solution Approach 1:
The meshing straps are configured to nest within or alongside the housing shell areas rather than projecting outward. The straps can be positioned such that they lie within recesses or follow the contour of the housing surface, effectively nesting the connection elements within the existing housing geometry and minimizing additional installation space requirements.
Solution Approach 2:
The connection mechanism transitions from a two-dimensional outward projection to a three-dimensional configuration where meshing straps can extend in multiple directions (inwardly, laterally, or at angles) while maintaining compact overall dimensions. This dimensional flexibility allows the connection to be achieved without increasing the housing's external footprint.
3Stability of the object's composition
If complex folding processes are used for housing shell connection, then stable connection is achieved, but manufacturing complexity increases
Solution Approach 1:
The meshing formations (openings and straps) are pre-configured during manufacturing of the individual housing shell areas. This preliminary action allows the complex meshing patterns to be built-in during standard manufacturing processes, eliminating the need for complex folding operations during final assembly. The components arrive ready-to-connect with their meshing features already formed.
Solution Approach 2:
The meshing straps are designed to self-align and self-lock into the meshing openings through their geometric configuration. This self-service mechanism eliminates the need for complex manual folding or alignment procedures during assembly, as the meshing elements naturally guide themselves into the correct positioned and locked state through their interlocking geometry.
Data Source
AI summary
A housing for an exhaust system of an internal combustion engine of a vehicle, includes at least two housing shell areas (12, 14) enclosing a housing interior (26) and connected to one another in a connection area (16). A first housing shell area (12) of the two housing shell areas has a first meshing formation (36) in the at least one connection area (16) and a second housing shell area (14) of the two housing shell areas has a second meshing formation (40) that meshes or can be caused to positive-lockingly mesh with the first meshing formation (36). The first meshing formation (36) includes at least one meshing opening (38) and the second meshing formation (40) includes at least one meshing strap (42) meshing with the at least one meshing opening (38) in association with the at least one meshing opening (38) of the first meshing formation (36).