ATM Chest Locking Bolt Work Mechanism with Adjustable Hinges
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Solution Overview
Problem
Automated banking machines, particularly ATMs, require a more reliable, economical, and secure locking bolt work apparatus that can be efficiently assembled and is resistant to attacks, even if hinges are compromised.
Innovation Solution
A secure enclosure with a locking bolt work mechanism that includes a moveable locking bolt with projections, a drive cam, and an idler cam, allowing the bolt to be easily opened by authorized personnel while providing enhanced security through adjustable hinges and a dead bolt mechanism that resists deformation attempts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional locking bolt work apparatus is used, then the door can be locked and unlocked, but the assembly process is complex and time-consuming
Solution Approach 1:
The locking bolt work apparatus is divided into separate modular components: the locking bolt assembly, the drive cam mechanism, and the idler cam. This segmentation allows each component to be manufactured independently and assembled systematically, reducing overall assembly complexity and time while maintaining the functional integrity of the locking mechanism.
Solution Approach 2:
The locking bolt is pre-positioned with projections that align with corresponding recesses in the door frame. The drive cam and idler cam are pre-configured in their rotational positions. This preliminary positioning ensures that when components are assembled, they automatically align correctly, eliminating the need for complex alignment procedures during assembly.
2Ease of operation
If the door is mounted on hinges, then the door can be opened and closed, but misalignment of hinges creates assembly difficulties
Solution Approach 1:
The hinge assembly incorporates adjustable mounting positions and tolerance-compensating features that allow the door to be mounted even when hinge alignment is not perfect. The locking bolt's projections are designed to accommodate minor misalignments through elastic deformation and self-adjustment during the closing operation, enabling successful assembly despite hinge misalignment while maintaining smooth door operation.
3Reliability
If the locking bolt is made secure, then security is enhanced, but the door becomes harder to open even for authorized personnel
Solution Approach 1:
The drive cam acts as an intermediary mechanism between the key lock and the locking bolt. When the key is turned, the drive cam rotates and uses its cam profile to gradually move the locking bolt backward, compressing the spring. This intermediary action allows authorized personnel to easily open the door through simple key rotation, while the spring-loaded mechanism maintains strong holding force during normal operation, balancing security with ease of operation.
4Reliability
If the locking bolt projections are made large, then security against forced opening is improved, but the bolt work apparatus becomes more complex
Solution Approach 1:
The locking bolt features localized reinforcement at specific critical points where projections engage with the door frame recesses. Rather than making the entire bolt structure complex and oversized, the design concentrates strength and security features only at the engagement points, maintaining simplicity in non-critical areas while providing enhanced resistance to forced opening where it is most needed.
Data Source
AI summary
A cash dispensing automated banking machine activated responsive to user cards includes a secure enclosure. The secure enclosure includes a chest portion and a moveable door. The door has mounted thereon a locking bolt work mechanism which is operative to selectively secure the door in a closed position. The door is mounted to the chest through hinge assembles that enable the door to be selectively adjusted in up-down and right-left directions. The chest door includes dead bolt portions at the hinge side that resist separation of the door from the chest if the hinge is compromised.