Intelligent door lock free square rod linkage support device with two adjustable rotating ends
By using a single motor to drive the lifting and lowering of the outer support ring, the smart door lock achieves the switching between outdoor linkage unlocking and indoor child lock detachment functions, solving the problems of complex control and high cost in existing technologies, and achieving a compact and reliable two-way control effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU BENZHI ELECTRONIC TECH CO LTD
- Filing Date
- 2026-06-05
- Publication Date
- 2026-07-17
AI Technical Summary
In homes with children or pets, existing smart door locks have indoor handles that can be easily pressed down to open the door, posing a risk of accidental opening. Furthermore, existing solutions require multiple motors for control, resulting in high costs, large size, and complex wiring.
A single motor drives the lifting and lowering of the outer support ring frame, which controls the engagement and disengagement of the outdoor and indoor clutch mechanisms respectively, realizing the switching between outdoor linkage unlocking and indoor child lock disengagement functions. The outer lock module is engaged and disengaged by the upward movement of the outer support ring frame, and the inner lock module is engaged and disengaged by the downward movement of the drive rod.
It achieves compact and low-cost two-way control, with the function of switching between outdoor linkage unlocking and indoor child lock disengagement. The transmission path is clear and the operation is reliable, solving the defect of requiring multiple sets of motors in the existing technology.
Smart Images

Figure CN122407012A_ABST