Dual Protection Lock Structure with Segmented Latch Elements
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Solution Overview
Problem
Conventional electronic locks allow access from the outside using access cards but lack dual protection for both entry and exit, and fail to function properly during power failures.
Innovation Solution
A lock structure incorporating a rotating shaft, swing rod, push rod, brake shoe, and handle rotating shaft with first and second latch elements connected to indoor and outdoor card readers via a control circuit, allowing card-based unlocking from both sides and manual key unlocking during power failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electronic locks use card readers for access control, then access convenience is improved, but dual protection for both entry and exit is lost
Solution Approach 1:
The lock system is divided into two independent latch elements: a first latch element controlling the swing rod for exit protection, and a second latch element controlling the handle rotating shaft for entry protection. This segmentation allows each latch to be independently controlled by card readers or mechanical keys, enabling dual protection while maintaining electronic access convenience.
2Extent of automation
If electronic locks rely on power supply, then automated control is improved, but functionality fails during power failure
Solution Approach 1:
Different parts of the lock system have different control qualities: the first and second latch elements can be controlled electronically via card readers under normal conditions, but the mechanical key cylinder provides a purely mechanical backup. This local quality differentiation ensures that critical unlocking functions remain available even when electronic power fails.
3Reliability
If lock structure adds multiple latch elements for dual protection, then security is improved, but device complexity increases
Solution Approach 1:
The lock system merges electronic control and mechanical control into a unified structure. The first latch element (swing rod) and second latch element (handle rotating shaft) are integrated into the same lock body, sharing common components like the card reader interface and control circuitry. This merging reduces overall complexity compared to having completely separate locking mechanisms.
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
Enables dual protection by allowing secure access from both inside and outside the door using access cards and provides an alternative key-based unlocking mechanism during power outages, enhancing safety and functionality.
Implementation Method 1
a first latch element (7) is configured above the swing rod (3)... allowing the first latch element (7) and second latch element (8) to be in respective connection with indoor and outdoor card readers... the motion of the first latch element (7) or second latch element (8) subjected to or released from magnetic suction
Data Source
AI summary
A lock structure of dual protection includes a lock core rotating shaft, swing rod, push rod, brake shoe and handle rotating shaft coupled pivotally to a door handle configure on a lock, wherein a first latch element is configured above the swing rod, and a second latch element at one side of the handle rotating shaft, allowing the first latch element and second latch element to be in respective connection with indoor and outdoor card readers through a control circuit. Whereby, the lock must be unlocked by swiping an access card outdoors or indoors while being locked, and a user is allowed to turn a door handle to unlock the lock indoors or outdoors by means of the motion of the first latch element of second latch element subjected to or released from magnetic suction while the access card is swiped so that the dual protection can be achieved.