Vending Machine Door Hinge and Locking Mechanism
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Solution Overview
Problem
Existing vending machines face challenges in providing high burglary security while ensuring easy and user-friendly door unlocking, maintenance, and servicing, particularly with large opening angles and secure locking mechanisms.
Innovation Solution
A vending machine design featuring a remote-controlled locking device with a hinge system allowing a door opening angle of over 140°, removable hinge pins, and multiple security levels, including a locking mechanism with separate key/lock systems and radio-controlled access, to enhance security and facilitate maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secure locking mechanism with multiple security levels is implemented, then burglary protection is improved, but door opening simplicity and maintenance accessibility deteriorate
Solution Approach 1:
The locking mechanism is divided into multiple independent security levels (first lock, second lock, third lock) that can be engaged or disengaged separately. The control element can selectively actuate different locking hooks corresponding to different security levels, allowing the system to provide high security when needed while enabling simple access when authorized.
Solution Approach 2:
A control element serves as an intermediary between the user and the multiple locking mechanisms. This single control interface can manage all security levels and locking hooks, simplifying the user interaction while maintaining the complexity of the security system behind the scenes.
2Reliability
If a restricted door opening angle is imposed for security, then burglary protection is improved, but maintenance and repair accessibility deteriorate
Solution Approach 1:
The door hinge system transitions from a static restricted-angle design to a dynamic two-stage system. In normal operation, the first hinge pin restricts the opening angle for security. During maintenance, the first hinge pin can be removed, allowing the door to pivot around the second hinge pin and achieve a much larger opening angle for full accessibility.
Solution Approach 2:
The hinge system is segmented into two separate hinge pins with different functions. The first hinge pin provides security-restricted positioning, while the second hinge pin enables full-opening maintenance mode. This segmentation allows the same door to satisfy both security and maintenance requirements.
3Stability of the object's composition
If fixed hinge pins are used to maintain door position, then structural stability is improved, but door replacement capability deteriorates
Solution Approach 1:
The hinge system uses two separate hinge pins instead of a single fixed hinge. The first hinge pin can be removed to enable door replacement, while the second hinge pin remains to maintain basic structural stability and proper door alignment even when the door is detached from the first hinge.
Solution Approach 2:
The removable first hinge pin is designed to be easily detachable, allowing the door to be quickly removed and replaced without damaging the hinge system. The second hinge pin is positioned to ensure the door maintains its correct positioning and stability throughout the removal and replacement process.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The description includes a vending machine (17), for example a ticket vending machine, travel ticket vending machine, parking permit vending machine, goods vending machine or service vending machine, wherein the vending machine (17) has a door (4) for maintenance and servicing, comprising: a locking device (8) for locking the door (4), wherein the locking device (8) has a locking device (19) for blocking a lock (11), wherein the locking device (19) is remotely controllable, and a door hinge system with at least one first hinge pin (2), wherein the first hinge pin (2) is removable, thereby removing the restriction of the opening angle, and/or with at least one hinge strap (3), wherein the hinge strap (3) is removable, thereby allowing the door (4) to be separated from the vending machine (17).