Mailbox Door Support Member for Load Tests and Water Shedding
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Solution Overview
Problem
Mailboxes often fail to pass certification tests due to structural integrity issues during load and impact tests, and they do not adequately protect against water ingress, leading to compromised functionality and moisture accumulation.
Innovation Solution
A support member for the door assembly of a mailbox, featuring a body portion coupled to the door member and flange portions extending outwardly, which provides additional structural support and directs water away from the interior, preventing plastic deformation and moisture accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the door is made with standard structural support, then the mailbox can be manufactured simply, but the door fails to pass load and impact tests due to insufficient structural integrity
Solution Approach 1:
The door assembly is segmented into multiple components: a door member, a support member with body portion and flange portions, and coupling members. The support member is further segmented into distinct functional portions (body portion for coupling, flange portions for structural support). This segmentation allows each component to be optimized for its specific function while maintaining overall structural integrity to pass load and impact tests.
Solution Approach 2:
The door assembly uses a composite structure combining the door member and support member made of comparable materials (such as steel or aluminum), creating a reinforced composite structure. This composite approach provides enhanced strength and rigidity to withstand certification test requirements while maintaining manufacturability through standard material processes.
2Reliability
If the door assembly uses basic coupling methods, then the manufacturing process is simple, but the door cannot withstand the loads and impacts of certification tests
Solution Approach 1:
The support member is nested within or coupled to the door member, with the body portion of the support member coupling to the door member and flange portions extending outwardly. This nested arrangement creates a reinforced structure where the support member is integrated into the door assembly, providing enhanced reliability to withstand certification tests while using straightforward coupling methods.
Solution Approach 2:
The support member acts as an intermediary element between the door member and the mailbox body, providing structural reinforcement. The body portion couples to the door member while the flange portions can couple to the mailbox body or provide additional structural support, mediating the load distribution and enhancing overall assembly reliability.
3Object-affected harmful factors
If the mailbox has no water directing features, then the structure is simpler, but water enters the interior compartment during storm conditions
Solution Approach 1:
The flange portions extend outwardly from the body portion in a dimensional extension that creates an overhang or lip structure. This dimensional change allows the flange portions to protrude beyond the door member edge, creating a water-shedding feature that directs water away from the interior compartment while maintaining a relatively simple overall structure.
Solution Approach 2:
The flange portions are positioned to intercept and redirect water that would otherwise enter the mailbox interior. By converting the harmful effect of rain into a beneficial water-shedding feature, the flange portions direct water away from the door member and interior compartment, protecting against water ingress during storm conditions.
Data Source
AI summary
A support member is for a door assembly of a mailbox. The mailbox includes an enclosure member and a panel member coupled to the enclosure member. The door assembly has a door member coupled to the panel member. The support member includes a body portion structured to be coupled to the door member; and a flange portion extending outwardly from the body portion.