Multi-key Lock Core with Dual Recessed Plates for Faster Security Checks

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Solution Overview

Problem

Conventional locks with single-key mechanisms are time-consuming during security checks, as each lock core requires a different key for unlocking, leading to inefficiencies in luggage inspection, especially in air transport.

Innovation Solution

A multi-key lock core design featuring a housing, driving cylinder, circular lock plates, and a lock rod, allowing two keys to operate the lock core by rotating the circular lock plates to different recessed portions, enabling efficient unlocking and locking with guide slots and reset mechanisms for convenient use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single-key lock core mechanism is used, then each lock can be securely locked, but the time required for security checks increases significantly

Engineering Contradiction:
Improvelocking securityVSAvoidunlocking time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The lock core is designed with multiple key-operable mechanisms within a single unit. The driving cylinder can be operated by multiple different keys, each key capable of independently unlocking the lock rod through different operational paths. This multi-functional design allows any authorized key to unlock the lock, eliminating the need for multiple separate lock cores and significantly reducing unlocking time during security checks.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple separate lock cores are used to allow different keys, then key versatility is achieved, but device complexity increases

Engineering Contradiction:
Improvekey compatibilityVSAvoidlock core structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple lock core mechanisms are merged into a single integrated lock core structure. The driving cylinder contains multiple key-operable components (first and second key-operable mechanisms) that work together within one unified system. The lock rod serves as a common output for both mechanisms, and the housing integrates all components into a single unit. This merging approach achieves key versatility while avoiding the complexity of multiple separate lock cores.

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If a multi-key mechanism is implemented, then unlocking efficiency improves, but the structural complexity of the lock core increases

Engineering Contradiction:
Improvesecurity check speedVSAvoidlock core components
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The multi-key mechanism is segmented into distinct operational modules within the driving cylinder. The first and second key-operable mechanisms are separate functional segments that can be independently operated by different keys. Each segment has its own key insertion path and operational sequence, but they converge on the common lock rod. This segmentation allows for efficient multi-key operation while keeping each individual mechanism relatively simple and manageable.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS11591822B2Multi-key lock core
Publication Date: 2023.02.28 SINOX CO LTD
  • US11591822B2 patent drawing
  • US11591822B2 patent drawing
  • US11591822B2 patent drawing

AI summary

A multi-key lock core includes a housing, a driving cylinder, a plurality of circular lock plates, and a lock rod. The driving cylinder is disposed in the housing, a sidewall of the driving cylinder is provided with a penetration portion, and the driving cylinder is rotatable to the penetration portion to correspond to an engagement recessed portion. The circular lock plates are disposed in the driving cylinder and each include an outer edge provided with a first recessed portion, and the outer edge of at least one of the circular lock plates is further provided with a second recessed portion. The lock rod is disposed in the penetration portion, and may partially enter the engagement recessed portion to restrict rotation of the driving cylinder. A first key may push the circular lock plates to rotate to the first recessed portion to correspond to the penetration portion, so that the lock rod can move to partially enter the first recessed portion and detach from the engagement recessed portion. The second key may push the circular lock plates to rotate to the second recessed portion and the first recessed portion to correspond to the penetration portion, so that the lock rod can move to partially enter the second recessed portion and the first recessed portion and detach from the engagement recessed portion.