Zhaowei Machinery & Electronics Co., Ltd.
Smart Home

Technologies Driving Future of Smart Home

The smart networking and automation of different devices and functions noticeably increase living comfort around the house and garden and make everyday life easier. ZHAOWEI miniature motors provide high torque density, long life and high efficiency to maximize performance of automation technology, to reduce cost of ownership and to improve reliability.

Door Lock Actuator Gearbox Motors

Each Door Lock Gearbox Motors consists of a smart lock motor and a lock gearbox. By embedding the gearbox motor into the lock’s cylinder system, the unlocking process is complete. This improves the unlocking speed, as well as the safety of the door lock, while prolonging the lock’s tube system service life.

Smart Lock System

Background Information

With progressive developments in IT and wireless-communications technology, the concept of intelligent product existence resonates with the heart of individual users. An increasing demand in biometric door locks, and other smart lock systems have contributed to the intelligent security and home automation industries.

The Problem

Insufficient reliability, speed and security of smart home locks.

Product Description

In order to improve the security and reliability of smart door locks, ZHAOWEI has introduced the DC motorized door lock as a solution for the lock’s tube system, also known as smart door lock motor control system. It comprises of a micro smart lock motor and a precision lock gearbox, and contributes to the enhanced performance of each home’s smart door lock.

Case Study Illustrations

Smart Door Lock Gearbox

1. How do we improve unlocking speed? The ZHAOWEI smart door lock motor control system uses a DC motorized lock and a gearbox with a planetary structure to control the basic functions of locking and unlocking. This design makes basic locking more controllable, bringing more reliability, and enables a longer service life.

door lock motor

2. How do we then, improve lock security? The front panel of the ZHAOWEI smart door lock motor control system controls the locking bolt. The ZHAOWEI lock gearbox motor directly connects to the lock’s interior to form the rear control panel. Special security measures are placed to prevent anti-electromagnetic interference. This gearbox system has passed tests from a range of various levels of electromagnetic interference and failure analyses, resulting in high levels of anti-interference. The smart door lock also short circuits when intruders try to open these doors.

3. Lastly, how do we guarantee unlocking reliability? The micro gearbox uses different parameters for basic locking, utilizing multi-stage transmission, that changes from Stage 1 to Stage 4. The reduction ratio, stator speed and torque then adjusts according to the driving demand of the clutch motor in the lock’s body. This results in the ability to install smart gearboxes with compact structures, high efficiency, and high torque. There is no longer a need to face the awkwardness caused by door locks failing to open. 

The ZHAOWEI gearbox motor for smart locks used in this scheme has been tested and has shown great performance: It can withstand vibration, shock, and extreme temperatures, optimizing the performance/volume ratio (PVR). ZHAOWEI’s gearbox smart lock motor systems have passed tests for low noise, high dynamic performance, high power density, low energy consumption, high electromagnetic anti-interference, and long durability.


In addition to smart door lock, we also provide solutions for peristaltic pumpelectric curtain, stroller, smart door lock actuator, rotating screen of TV, sliding cabinet door, window actuator, hard floor cleanersmart toilet pump, smart drawer lock, robot vacuum cleaner, air conditioner front panel, flip trash can, air purifier, automatic pet feeder, smart range hood, TV sliding soundbar, intelligent hot pot cooker, rotating smart speaker, washing machine, automatic toilet seat cover, electric sofa, electric standing desk, sensor pump, TV pop-up camera and electric lifting mosquito net.  

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Tell Us About Your Application Requirements

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Customer Service

ZHAOWEI’s micro drive systems apply in diverse areas all around the world to deliver the power, precision, and efficiency to motion solutions. Our sales and engineering support teams are ready to assist you with any questions, including quotation, application support, and product configuration. Please submit your requirements through our Custom Service Form to ensure a faster response.