Photoelectric Switch-Controlled Motor for Intelligent Lock Automation
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Solution Overview
Problem
Current American-standard locks have a low intelligence degree and limited structural variety, necessitating an improvement in their control mechanisms for locking and unlocking.
Innovation Solution
An intelligent lock device with a photoelectric switch-controlled motor, featuring a lock case, rear mounting plate, transmission gear, rotary rod, connecting sleeve, circuit board, door sensor bar, and sensor magnet, which enables automatic locking and unlocking through photoelectric control and strong magnetic sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a combination of photoelectric switch and Hall switch is used to control locking and unlocking, then the intelligence degree is improved, but the device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical switches (mechanical switch and Hall switch combination) with a photoelectric switch control system. The photoelectric switch detects the position of the transmission gear and rotary rod through optical signals, eliminating the need for complex mechanical switch assemblies while achieving the same control functionality for locking and unlocking operations.
Solution Approach 2:
The patent introduces photoelectric baffles as intermediary elements that mediate between the mechanical movement components (transmission gear, rotary rod) and the control system. These baffles block or transmit light signals to the photoelectric switch based on their position, providing a clean optical interface that simplifies the control mechanism while maintaining high intelligence degree.
2Adaptability or versatility
If traditional mechanical switch and Hall switch combination is used, then the control functionality is achieved, but the structural variety is limited
Solution Approach 1:
The patent employs dynamic photoelectric detection where the photoelectric baffles move with the transmission gear and rotary rod, creating variable optical signals that provide rich positional information. This dynamic optical detection system offers greater adaptability for different locking positions and states compared to static mechanical switch configurations.
Solution Approach 2:
The patent utilizes changes in optical parameters (light blockage, transmission, reflection) as the photoelectric baffles move through different positions. This parameter-based control approach provides multiple distinguishable states and positions, enabling greater structural variety and adaptability in the locking mechanism compared to traditional binary mechanical switch systems.
3Ease of manufacture
If photoelectric control is adopted, then the processing and manufacturing of circuit board becomes easy and stable, but the manufacturing precision requirements increase
Solution Approach 1:
The patent designs the photoelectric baffle assembly and transmission gear with self-aligning features where the optical path is automatically positioned correctly through mechanical engagement. The photoelectric baffles are mounted on the moving components themselves, ensuring that their position relative to the photoelectric switch is determined by the mechanical drive train rather than requiring separate high-precision alignment procedures.
Solution Approach 2:
The patent incorporates tolerance compensation design in the photoelectric detection system, where the optical detection field is designed to accommodate reasonable manufacturing variations. The photoelectric switch is positioned to detect signals over a range of positions, providing a margin of error that cushions against minor misalignments in the assembly process.
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 intelligent lock device achieves novel structural design, automatic locking functionality, easy manufacturing, and stable processing, with the knob being detachable and the lock parts simple in structure, facilitating user operation and enhancing security.
Implementation Method 1
photoelectric switch K3 for determining a gear state, and a photoelectric switch K2 and a photoelectric switch K1 for determining a rotation state of the rotary rod
Implementation Method 2
the knob is composed of a knob base, a strong magnet and a knob case by hot melting and is detachable from the lock case, the knob base is provided with four projections A matching recesses of the knob attraction plate and is tightly attracted thereto
Implementation Method 3
a door sensor bar and a door sensor plate. The door sensor bar is mounted to the door sensor plate, and a sensor magnet is mounted at one side of the door sensor plate
Data Source
AI summary
The present invention discloses an intelligent lock device with a photoelectric switch-controlled motor, which includes: a lock case and a rear mounting plate. An end face of the lock case is provided with a knob attraction plate, and a knob is mounted to the knob attraction plate. The rear mounting plate is attached to the lock case using a snap-fit connection. A transmission gear is installed at an inner side of the lock case, the transmission gear meshes with a motor module, and the motor module is fixed to a motor fixing plate. A gear bore is formed in a center of the transmission gear, a rotary rod penetrates through the gear bore, and the rotary rod is drive-connected to the knob. The rotary rod is connected to a connecting sleeve, the connecting sleeve penetrates through a circuit board to be connected to a deadbolt body, and the deadbolt body matches a plug follower. The intelligent lock device further includes: a door sensor bar and a door sensor plate. The door sensor bar is mounted to the door sensor plate, and a sensor magnet, is mounted at one side of the door sensor plate. The intelligent lock device is novel in structural design. With a door sensor function featuring, strong magnetic sensing, the intelligent lock device can realize automatic locking. Meanwhile, the knob can be detached from and attached to a rear lock body through a strong magnet.