Self-Backing Corner Joint Clip for Easier Metal Door Assembly
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Solution Overview
Problem
Conventional commercial metal doors face challenges with corner joints due to heavy use, which requires labor-intensive internal clip assemblies with discrete backing plates that are difficult to align and support correctly.
Innovation Solution
A framed assembly with a clip design that includes integrally formed backing plates, allowing for simplified assembly by eliminating the need for discrete backing plates and reducing the number of components, while providing a stable corner joint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If discrete backing plates are used in conventional clip assemblies, then the corner joint can be stabilized, but the assembly process becomes labor-intensive and complex
Solution Approach 1:
The backing plate is integrally formed with the clip body as a single monolithic component, eliminating the need for separate discrete backing plates. This merging of components simplifies the assembly process while maintaining the structural stability function that the backing plate provided in conventional designs.
2Stability of the object's composition
If discrete backing plates are used in conventional clip assemblies, then the corner joint can be stabilized, but the number of components increases
Solution Approach 1:
The backing plate and clip body are combined into a single integral component, reducing the total number of parts in the corner joint assembly. This eliminates the need to handle, position, and fasten separate backing plates, thereby reducing component count while preserving the stabilizing function.
3Ease of manufacture
If discrete backing plates are blindly supported within the stile interior, then the clip can be mounted to the stile, but the alignment process becomes difficult and time-consuming
Solution Approach 1:
The backing plate is pre-integrated into the clip body during manufacturing, with the hole positions precisely established in advance. This preliminary positioning eliminates the need for field alignment and ensures precise hole registration when the clip is installed in the stile, significantly improving assembly ease while maintaining manufacturing precision.
Data Source
Figure 1
Figure 2A~2B
Figure 3~5
AI summary
A framed assembly includes a first frame member providing an inner vertical wall extending between opposing front and back surfaces and defining a slot, and a second frame member positioned adjacent the first frame member at a corner joint and providing a horizontal wall extending between opposing front and back surfaces of the second frame member. A clip having opposing front and back sides provides a backing plate extending from the back side and a projection extending from the front side. The backing plate is received within an interior of the first frame member via the slot, and the projection is received within an interior of the second frame member adjacent the horizontal wall.