Energy-Saving Magnetic Lock with Trip Rod Sensor
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Solution Overview
Problem
Existing electronically controlled magnetic locks consume high power due to prolonged high current usage, which contradicts energy-saving and emissions reduction requirements, as they are typically in a locked state when powered on.
Innovation Solution
An energy-saving magnetic lock design featuring a first lock module with an electromagnet, trip rod, sensor, and circuit control board, which transitions from a low current state to a high current state upon detecting an external force exceeding a predetermined value, incorporating a spring mechanism and elastic members to facilitate axial movement of the trip rod and trigger an alarm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the magnetic lock operates in a high current state to ensure sufficient locking tension, then the locking force is improved, but the energy consumption increases significantly
Solution Approach 1:
The magnetic lock operates in periodic cycles, alternating between low-current standby mode and high-current active locking mode. The control circuit activates high current only when locking is required, otherwise maintaining low current consumption, thus resolving the contradiction between continuous high force and energy efficiency
Solution Approach 2:
The system dynamically adjusts current levels based on operational requirements. A sensor detects door closure and triggers the electromagnet to switch from low-current state to high-current state only when needed, optimizing the balance between locking force and power consumption
2Reliability
If the magnetic lock remains in a power-on state to maintain security, then the reliability is improved, but the energy consumption increases due to prolonged current flow
Solution Approach 1:
The magnetic lock uses periodic sensing and triggering mechanisms rather than continuous operation. The sensor periodically monitors door position and activates the electromagnet only when closure is detected, maintaining security readiness while minimizing energy consumption during extended idle periods
Solution Approach 2:
The system uses a sensor to automatically detect door closure and trigger the locking mechanism without requiring continuous power or manual intervention. This self-activating mechanism maintains reliability while reducing energy consumption by operating only when necessary
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 magnetic lock operates in a low current state until an external force is detected, then instantly increases tension to a high current state while providing a warning alert, thus reducing energy consumption and enhancing security.
Implementation Method 1
an electromagnet
Implementation Method 2
Magnetic lock tension F=K*AT
Implementation Method 3
a spring arranged around the outer periphery of the trip rod between the flange of the trip rod and the slot
Data Source
AI summary
An energy-saving magnetic lock comprising: a first lock module (I) mounted to a part of a door such as a doorframe; and a second lock module (II), mounted to the other part of the door such as a door panel which can pivot about the doorframe, for interacting with the first lock module (I), wherein the first lock module (I) comprises: an electromagnet (1); a slot (12); a trip rod (11) inserted inside the slot; a sensor (13) equipped at the slot end; a member, which is arranged between the trip rod (11) and the slot (12), allowing the trip rod to move toward the slot opening axially a predetermined distance when the pressing force on the head of the trip rod (11) is less than the predetermined value; a circuit control board (15), wherein the trip rod (11) has a length equal to the distance between the slot opening and a surface of the sensor (13) facing the slot opening, the second lock module (II) comprises: an iron plate (2) installed on or in the part of the door panel by a main screw (21), wherein the main screw (21) comprises: a rod whose end passes through a counterbore (22) of the iron plate (2) and being secured to the part of the door; and a cap (211) abutting against the head of the trip rod (11) when the electromagnet (1) and the iron plate (2) are sucked together and wherein a first elastic member (23) is arranged between the iron plate (2) and the cap (211) of the main screw (21), and a second elastic member (24) is arranged between the iron plate and the part of the door. The lock can save energy and have added alarm function thereby security is strengthened.