Mail Receptacle Hopper and Flap for Secure Parcel Drop
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Solution Overview
Problem
Existing mail and parcel receptacles lack effective mechanisms to restrict access to deposited parcels after they are stored, making them vulnerable to theft or vandalism, and often fail to prevent water ingress.
Innovation Solution
A receptacle design featuring a rotatable hopper with a flap mechanism that blocks access to the storage area and incorporates a drainage system with a gutter and brush to prevent water entry, along with a spring mechanism to assist in closing the hopper, ensuring secure storage and protection from moisture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotatable hopper with flap mechanism is added to restrict access, then security against theft and vandalism is improved, but device complexity increases
Solution Approach 1:
The hopper is designed to be rotatable between open and closed positions, and the flap is designed to rotate between up and down positions. This dynamic mechanism allows the system to transition between secure (flap up, hopper closed) and accessible (flap down, hopper open) states, providing active security control rather than a static barrier.
Solution Approach 2:
The access restriction function is divided into two separate components: the rotatable hopper that controls overall access to the storage area, and the rotating flap that controls access through the bottom opening. This segmentation allows each component to perform its specific function independently, improving reliability while maintaining manageable complexity.
2Ease of operation
If the hopper is made fully rotatable for easy access, then ease of operation is improved, but security against unauthorized access deteriorates
Solution Approach 1:
The system uses dynamic positioning of both the hopper and flap to control access. The hopper can be rotated to a fully open position for easy parcel deposition, but the flap simultaneously rotates to an upright position that blocks the bottom opening, preventing unauthorized access even when the hopper is open.
Solution Approach 2:
The flap is positioned in advance to block the bottom opening before the hopper is fully opened. This preliminary action ensures that even if someone gains access to the hopper opening, the bottom path remains blocked, providing pre-emptive security.
3Object-affected harmful factors
If drainage system with gutter and brush is added to prevent water ingress, then protection from moisture is improved, but device complexity increases
Solution Approach 1:
The drainage system uses a gutter as an intermediary component to intercept and redirect water away from the storage area. The brush acts as another intermediary element to block water flow paths. These intermediary components protect the valuable contents without requiring complex sealing mechanisms.
Solution Approach 2:
The drainage system extracts and removes water from potential ingress paths before it can reach the storage area. By taking out the harmful element (water) through the gutter and brush components, the system protects contents without needing complex protective structures.
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 solution effectively restricts unauthorized access to stored parcels while preventing water ingress, enhancing security and maintaining the integrity of contents within the receptacle.
Implementation Method 1
a spring mechanism to assist in closing the hopper
Implementation Method 2
parcels dropped from the hopper and stored
Data Source
AI summary
A receptacle for receiving objects, such as mail or parcels, has a main housing having an input opening through which objects may be placed into the receptacle, and a hopper style door rotatable coupled within the housing. The hopper has bottom for receiving an object and a hopper cover disposed under the bottom. The hopper is rotatable between an open position in which the bottom is accessible through the opening and a closed position in which the hopper cover blocks the input opening. A flap is coupled to the hopper and is rotatable between an up position when the hopper is in the open position in which the flap forms a back wall adjacent the rear edge of the bottom, and a down position when the hopper is in the fully closed position in which the flap allows an object to slide off the bottom and out of the hopper.