Motor-Driven Cabinet Lock With Screw Rod Transmission
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Solution Overview
Problem
Conventional electronic cabinet locks face high energy consumption and mechanical complexity issues, leading to inconvenient usage and high failure rates due to electromagnetic mechanisms and mechanical transmission systems.
Innovation Solution
An electronic cabinet lock design featuring a motor-driven transmission mechanism with a slider and screw rod, along with a simpler structure and emergency unlocking feature, reduces component count and assembly complexity while providing reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electromagnetic mechanism is used to control the swing of the limiting member, then the locking function is reliable, but the energy consumption is high
Solution Approach 1:
The patent replaces the electromagnetic mechanism with a motor-driven mechanical transmission system. The motor drives a screw rod that converts rotational motion into linear motion of the slider, which in turn controls the limiting member's swing. This mechanical substitution reduces energy consumption while maintaining reliable locking function through precise mechanical control.
Solution Approach 2:
The patent employs periodic action through the motor's intermittent operation. The motor drives the screw rod only when locking or unlocking is required, rather than continuous electromagnetic actuation. This periodic mechanical actuation significantly reduces overall energy consumption while maintaining the reliability of the locking function when activated.
2Use of energy by moving object
If a motor with mechanical transmission mechanism is used to control the limiting member, then the energy consumption is reduced, but the device complexity increases
Solution Approach 1:
The patent segments the transmission mechanism into distinct functional components: the motor, screw rod, slider, and limiting member. Each component has a specific function, and they are connected in a straightforward sequence. This segmentation simplifies the overall design compared to complex gear reduction groups, making the mechanism easier to understand, assemble, and maintain while achieving low energy consumption.
Solution Approach 2:
The patent extracts and eliminates unnecessary intermediate components from the transmission mechanism. Instead of using a complex gear reduction group with multiple stages, the design directly connects the motor to the screw rod, which then directly actuates the slider and limiting member. This extraction of redundant components reduces device complexity while maintaining the motor's energy efficiency advantage.
3Force
If a complex mechanical transmission mechanism is used, then the locking force is sufficient, but the assembly difficulty increases
Solution Approach 1:
The patent segments the locking mechanism into modular components that can be assembled independently. The motor assembly, screw rod-slider assembly, and limiting member assembly are designed as separate units with clear interfaces. This segmentation allows for simpler individual component manufacturing and easier final assembly, while the combined system still generates sufficient locking force through the mechanical advantage of the screw mechanism.
Solution Approach 2:
The slider acts as an intermediary component that simplifies the connection between the screw rod and the limiting member. It converts the rotational motion of the screw rod into linear motion that directly actuates the limiting member, eliminating the need for complex intermediate linkages. This intermediary approach maintains sufficient locking force while greatly simplifying the assembly process.
4Ease of operation
If a mechanical transmission mechanism with many components is used, then the locking control is precise, but the mechanical failure rate increases
Solution Approach 1:
The patent extracts and removes unnecessary intermediate components from the transmission path. The direct connection between the motor, screw rod, slider, and limiting member eliminates multiple potential failure points found in complex gear systems. This streamlined design maintains precise locking control through the screw mechanism's inherent precision while significantly reducing the mechanical failure rate by minimizing the number of moving parts.
Solution Approach 2:
The screw rod-slider mechanism provides self-service in terms of precision control. The threaded engagement of the screw rod with the slider inherently provides precise, repeatable positioning of the limiting member without requiring additional control components. This self-servicing precision mechanism reduces the need for complex control systems, thereby lowering the overall mechanical failure rate while maintaining accurate locking control.
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 solution results in lower mechanical failure rates, easier assembly, and enhanced convenience with reduced energy consumption, allowing for efficient locking and unlocking operations, including manual override options.
Implementation Method 1
The screw rod is driven to rotate by the motor. The screw rod is threadedly connected to the slider for driving the slider to slide.
Implementation Method 2
A first elastic member for returning the lock body is disposed between the lock body and the lock housing.
Implementation Method 3
A second elastic member for returning the limiting member is disposed between the limiting member and the lock housing.
Implementation Method 4
The motor is electrically connected to the main control board. The screw rod is driven to rotate by the motor.
Data Source
AI summary
An electronic cabinet lock includes a lock housing, a lock body, a limiting member, a motor, and a main control board. The lock body and the limiting member are rotatably disposed in the lock housing, respectively. The motor is electrically connected to the main control board. The limiting member is driven by the motor through a transmission mechanism. The transmission mechanism includes a screw rod driven by the motor and a slider threadedly connected to the screw rod. The slider is slidably disposed in the lock housing, and is movably connected to the limiting member. The transmission mechanism has few components, which is a simple structure and convenient for assembly.