Solenoid Door Lock Release Mechanism for Low-Force Manual Unlocking
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Solution Overview
Problem
Existing door lock devices require significant force to unlock, especially when manually unlocking due to power failures or emergencies, which can lead to deformation or damage of components.
Innovation Solution
A door lock device design incorporating a solenoid with a plunger and slider mechanism, where a first elastic member connects the plunger and slider, allowing for easier unlocking by stretching the spring without separating the plunger and core, and utilizing a release mechanism to transfer force opposite to the magnetic force, reducing the required unlocking force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a release key is used to forcibly unlock the door lock device by separating the plunger and core, then the door can be unlocked, but significant force is required which may cause deformation or damage to components
Solution Approach 1:
A first elastic member (spring) is introduced as an intermediary between the plunger and the first slider. This spring allows force to be applied indirectly to separate the plunger from the core, reducing the direct force requirement and preventing component damage while maintaining reliable unlocking capability
2Ease of operation
If direct force is applied to separate the plunger and core for unlocking, then the door lock can be opened, but excessive force is required
Solution Approach 1:
The first elastic member acts as a mediator that amplifies and directs the applied force. When force is applied to the first slider, the spring transmits and multiplies this force to act on the plunger, reducing the direct force requirement from the user while maintaining effective unlocking capability
Solution Approach 2:
The system transitions from a static direct-force mechanism to a dynamic spring-based system. The elastic member allows for gradual force application and stores energy during compression, providing a mechanical advantage that reduces the peak force required for unlocking
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 design reduces the force needed to unlock the door lock device, minimizing component deformation and damage, while enabling efficient manual unlocking in emergency situations.
Implementation Method 1
a plunger that is elongated to have a portion exposed to an outside of the solenoid and configured to be magnetized by the coil so as to slide inside the bobbin
Implementation Method 2
a first elastic member having a first end supported by the plunger and a second end supported by the first slider
Data Source
AI summary
A door lock device is disclosed. The door lock device includes: a body; a solenoid comprising a bobbin on which a coil is wound, and a plunger that is elongated to have a portion exposed to an outside of the solenoid and configured to be magnetized by the coil so as to slide inside the bobbin, the solenoid being disposed in the body; a first slider into which the portion of the plunger exposed to the outside of the solenoid is inserted, the first slider being configured to move in a sliding direction of the plunger; and a first elastic member having a first end supported by the plunger and a second end supported by the first slider.