Modular Door Lock Assembly via Segmented Support Frame
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Solution Overview
Problem
Existing door locks with key usage are cumbersome to assemble, prone to deformation, and have inadequate fastness, leading to assembly difficulties and functional failures.
Innovation Solution
A modular door lock design featuring a tubular shell with a lock tongue, turning wheel, and drive mechanism, allowing for easier assembly and enhanced fastness through a support frame and elastomers, which automatically adjusts states and includes a braking element for secure operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional door lock structure is used, then the lock can be assembled, but the assembly is cumbersome and production efficiency is low
Solution Approach 1:
The door lock is divided into modular components including a shell, support frame, drive mechanism, turning wheel, and lock tongue. Each component can be manufactured separately and then assembled together, reducing assembly complexity and improving production efficiency. The support frame serves as a modular platform that holds the drive mechanism and connects to the shell and turning wheel.
2Strength
If the shell is made strong to prevent deformation, then fastness is improved, but assembly becomes more difficult
Solution Approach 1:
The lock is segmented into a shell and a support frame that can be assembled separately. The support frame is then integrated into the shell, allowing the shell to be manufactured with standard thickness while achieving enhanced fastness through the additional support frame structure.
Solution Approach 2:
The support frame is constructed using elastic material with specific physical and chemical properties that provide both strength and flexibility. This composite approach allows the shell to maintain its structural integrity while the elastic support frame provides additional fastness without requiring the shell itself to be excessively thick or strong.
3Ease of manufacture
If the shell is made thin to ease assembly, then assembly ease is improved, but the lock becomes prone to deformation under impact
Solution Approach 1:
The support frame is segmented into multiple components including support plates, support columns, and elastic elements that can be assembled separately and then integrated into the shell. This allows the shell to remain thin for easy assembly while the segmented support frame provides structural stability through distributed reinforcement.
Solution Approach 2:
The support frame provides localized reinforcement at specific positions within the shell rather than requiring the entire shell to be thick. The elastic elements and support columns are strategically positioned to provide stability where needed while maintaining overall assembly ease.
4Device complexity
If locating structures are placed on the shell, then part location is simplified, but assembly becomes difficult and internal parts shift under force
Solution Approach 1:
The locating structures are segmented and integrated into the support frame rather than being part of the shell. The support frame includes integrated locating features that guide and position the drive mechanism and turning wheel, allowing assembly to proceed more easily while maintaining structural integrity under force.
Solution Approach 2:
The support frame acts as an intermediary structure between the shell and the internal components. It provides locating structures that facilitate assembly while distributing forces throughout the structure, preventing internal parts from shifting under impact.
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 modular design simplifies assembly, enhances production efficiency, and improves the lock's durability and usability, particularly for bathroom doors, making it easier for elderly and children to operate while maintaining high fastness and automatic unlocking functionality.
Implementation Method 1
a first elastomer is set between the lock tongue baffle plate and the lock tongue. A second elastomer is set between the support handle and the side of the shell close to the turning wheel flange
Data Source
AI summary
The modular door lock includes a tubular shell with a lock tongue at an open end and a turning wheel in the shell. The outer edge of the turning wheel extends out to a flange. A support frame lies between the turning wheel and the lock tongue and a drive is set in the frame. The lock tongue is permanently connected with a connection strap, which is drive-jointed with the turning wheel flange end via the drive. The door lock has a first state causing the lock tongue to draw back into the shell opening end through the drive and the connection strap, as well as a second state that causes the lock tongue to automatically reach outwards, the turning wheel to automatically rotate to the initial position, and the connection strap and drive mechanism to automatically return to their initial positions under the movement of the tongue.