Vending Machine Withdrawal Device with Interlocking Bulkheads
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Solution Overview
Problem
Vending machines are vulnerable to tampering and unauthorized access due to easily accessible openings, which can disrupt their operation and allow improper product retrieval.
Innovation Solution
A withdrawing device with rotating bearing planes and interlocking bulkheads that selectively open and close to prevent unauthorized access, featuring a blocking system and actuating means to manage the movement of bulkheads, ensuring secure product delivery and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If openings are made accessible for product delivery and retrieval, then ease of operation is improved, but security against unauthorized access deteriorates
Solution Approach 1:
The patent applies dynamics by making the bulkheads movable rather than fixed. The first bulkhead rotates on a horizontal axis to open/close the fall room, while the second bulkhead rotates on a vertical axis to open/close the withdrawal room. This dynamic configuration allows the system to transition between different access states, providing ease of operation when needed while maintaining security by closing openings during vulnerable periods.
Solution Approach 2:
The patent segments the access control function into two separate bulkheads: a first bulkhead for controlling the fall room and a second bulkhead for controlling the withdrawal room. This segmentation allows independent control of each opening, enabling the system to maintain security by ensuring that when one room is accessible, the other remains closed, thus preventing simultaneous unauthorized access to both areas.
2Device complexity
If a single bulkhead is used to control openings, then device complexity is reduced, but reliability of security deteriorates
Solution Approach 1:
The patent divides the security control function into two separate bulkheads instead of using a single bulkhead. The first bulkhead (13) controls the fall room opening while the second bulkhead (15) controls the withdrawal room opening. This segmentation ensures that security is not dependent on a single component, and if one bulkhead fails or is compromised, the other still provides security protection.
Solution Approach 2:
The patent introduces a blocking system that acts as an intermediary between the two bulkheads. This blocking system prevents the second bulkhead from opening unless the first bulkhead is in the closed position, and vice versa. The intermediary blocking mechanism ensures coordinated operation and maintains security reliability by preventing simultaneous opening of both rooms.
3Productivity
If openings remain open for extended periods, then productivity is improved, but security against vandalism deteriorates
Solution Approach 1:
The patent implements periodic action by requiring the bulkheads to open and close in a coordinated sequence during each vending cycle. The first bulkhead closes after product delivery, and the second bulkhead closes after product retrieval. This periodic closing ensures that openings are not left open indefinitely, reducing vandalism risk while maintaining productivity through efficient cycle completion.
Solution Approach 2:
The patent applies preliminary anti-action through the blocking system that prevents premature or unauthorized opening of the bulkheads. The blocking mechanism ensures that the second bulkhead cannot open before the first bulkhead is properly closed, and vice versa. This preliminary prevention of improper sequencing protects against vandalism while allowing legitimate vending operations to proceed efficiently.
Data Source
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AI summary
A withdrawing device (1) for a vending machine for delivering products (8) is described, comprising at least one supporting structure (3) equipped with at least one fall room (5) of such product (8) into a withdrawal area (6) and at least one withdrawal room (7) of such product from outside, such fall room (5) being equipped with at least one first moving bulkhead (13) and such withdrawal room (7) being equipped with at least one second moving bulkhead (15), such first bulkhead (13) being moving between a closing position and an opening position of such fall room (5) and vice versa, and such second bulkhead (15) being moving between a closing position and an opening position of such withdrawal room (7) and vice versa.