Electric Lock Device with Nested Driving Shaft and Spring Bias
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Solution Overview
Problem
Conventional mechanical door locks cannot be reliably locked or unlocked using wire or wireless control, and their functionality is compromised during power outages, leading to potential unauthorized access.
Innovation Solution
A lock device with an electric driving mechanism that includes a latch head, an unlatching mechanism, and a locking block, which can be controlled to move between locking and unlocking positions using a driving shaft, ensuring secure operation even without continuous power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an electric driving device is added to enable wire or wireless control, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The electric driving device is nested within the existing lock device structure, with the driving shaft integrated into the locking mechanism. The first and second sliding blocks are housed within the locking block, creating a compact nested arrangement that adds electric control functionality without proportionally increasing overall device complexity
Solution Approach 2:
The driving shaft serves multiple functions: it directly drives the locking block for electric locking/unlocking, and through the threaded section engages with the second sliding block to enable position adjustment. This multi-functionality reduces the need for separate mechanisms, balancing ease of operation with device complexity
2Ease of operation
If a solenoid switch is used for electric locking, then the ease of operation is improved, but the reliability deteriorates during power outages
Solution Approach 1:
Instead of using a solenoid that locks when powered and unlocks when powerless, this invention uses a spring mechanism that defaults to the locked position and requires active power to unlock. The first compression spring continuously biases the locking block toward the locked position, inverting the traditional fail-safe approach to achieve power-outage reliability
Solution Approach 2:
The first compression spring is pre-loaded to continuously exert a locking bias force on the locking block before any power interruption occurs. This preliminary anti-action ensures that if power is lost, the spring immediately maintains or restores the locked state, preventing unauthorized access during power outages
3Adaptability or versatility
If the locking block is made movable for electric control, then the adaptability is improved, but the reliability may deteriorate due to potential position changes during power outages
Solution Approach 1:
The first compression spring is pre-loaded and positioned to continuously bias the locking block toward the locked position before any power interruption occurs. This preliminary action ensures that the locking block is always held in a known, secure position, preventing unintended position changes during power outages while maintaining adaptability for electric control
Solution Approach 2:
The spring mechanism provides self-service by automatically maintaining the locking block in the locked position without requiring continuous power supply or active control. The spring continuously exerts force to counteract any external forces or position changes, ensuring reliability while allowing the electric driving device to provide adaptable control when powered
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
The lock device provides reliable electric locking and unlocking functionality, maintaining security even during power outages and allowing for remote control, enhancing access control systems.
Implementation Method 1
A first compression spring is mounted around the shaft. A second compression spring is mounted around the shaft. The first sliding block is located between the first and second compression springs. The first and second compression springs bias the first sliding block to the central position.
Implementation Method 2
An electric driving device is mounted in the groove of the base and includes a driving shaft having a threaded section at an intermediate portion thereof. A second sliding block includes a screw hole in threading connection with the threaded section of the driving shaft.
Data Source
AI summary
A lock device with an electric locking function includes a latch head slideably mounted in a case and an unlatching mechanism mounted in the case. The unlatching mechanism includes a follower portion operatively connected to the latch head. The unlatching mechanism further includes a locking mechanism having an electric driving device for driving a locking block to move between a front position in which the unlatching mechanism is locked and a rear position in which the unlatching mechanism is not locked. Wire or wireless control can be provided to control a driving shaft of the electric driving device to move in a forward direction or a reverse direction to lock or unlock the latch head.