Door Restrictor with Motorized Slide and Manual Override
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door restrictors are not compatible with electronic locks and are often complex and not very compact, limiting their versatility and practicality.
Innovation Solution
A door restrictor system that integrates an electronic lock mechanism with a mechanical backup, allowing manual operation and compatibility with electronic authentication methods, featuring a motorized slide mechanism and a mechanical cylinder for emergency access, housed within a compact door strip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical key cylinder is used for door restrictor operation, then manual operation is enabled, but compatibility with electronic locks is lost
Solution Approach 1:
The door restrictor is designed with a universal actuation mechanism that accepts both electronic signals from electronic locks and manual mechanical input. The actuator can be driven by either an electronic motor (when electronic lock is used) or direct manual manipulation (when mechanical operation is needed), making the system compatible with multiple operation modes and lock types.
Solution Approach 2:
A mechanical interface element serves as an intermediary between the electronic actuator and the door restrictor mechanism. This intermediary component allows the electronic motor to drive the restrictor while also permitting direct manual manipulation to override or operate the mechanism without electronic systems, thus bridging electronic and mechanical operation modes.
2Device complexity
If a sliding mechanism with manual operation is used, then manual control is possible, but the device becomes complex and not compact
Solution Approach 1:
The complex mechanical transmission components are extracted and replaced with a direct-actuation design. The door restrictor mechanism is simplified by removing intermediate levers and linkages, allowing the actuator (whether electronic or manual) to directly drive the restricting element, thus reducing overall device complexity while maintaining manual control capability.
Solution Approach 2:
The manual operation interface and electronic actuation system are merged into a single integrated mechanism. The same mechanical components serve both electronic-driven and manual-driven operations, eliminating the need for separate mechanical systems for each operation mode and thereby reducing complexity.
3Adaptability or versatility
If electronic lock integration is implemented, then compatibility with electronic authentication is achieved, but mechanical backup for emergencies is reduced
Solution Approach 1:
The system incorporates a mechanical override feature that is pre-configured to function during electronic system failures or power outages. This backup mechanism is designed beforehand to ensure that users can manually operate the door restrictor even when electronic authentication and motorized actuation are unavailable, thus cushioning against reliability issues.
Solution Approach 2:
Different parts of the actuation system have different qualities: the primary actuation interface is electronic and integrated with the electronic lock, while a secondary mechanical interface is provided specifically for emergency situations. This local differentiation allows the system to optimize for electronic operation while maintaining reliable mechanical backup where needed.
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
This door restrictor comprises: - a slide (48) equipped with teeth (176), and - an actuator (90) capable of automatically moving, in response to a release command, the slide from an active position to a retracted position, this actuator comprising for this purpose: - an electric motor (182), - a partially toothed wheel (186) driven in rotation by the motor, this partially toothed wheel comprising on its periphery: - a toothed portion (190) capable of engaging with the teeth of the slide to move it, along a sliding axis (150), from its active position to its retracted position, and - a portion (192) without teeth which, when it is opposite the teeth of the slide, disengages the wheel (186) and the slide (48) to allow manual movement of the slide without causing the wheel.