Sectional Door Lock Bolt Assembly with Coupling Rods
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Solution Overview
Problem
Existing sectional door wicket doors face challenges in providing simple and efficient installation of bolt arrangements that ensure satisfactory burglary security, with previous solutions requiring complex assembly and often failing to guarantee regular locking of multiple locking devices.
Innovation Solution
A bolt arrangement where coupling rods with shear and tensile force transmission surfaces are attached to door leaf elements, allowing preassembly of door leaf elements and coupling rods without connecting individual rods, and using pretensioned coupling rods with opposing surfaces to simplify assembly and enhance security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple locking devices are equipped with individual locking elements that must be actuated separately, then burglary resistance is improved, but the complexity of the locking arrangement and installation time increase
Solution Approach 1:
Multiple locking elements are merged into a single integrated locking device with a common actuating mechanism. The patent describes a locking device that incorporates multiple locking elements (at least two) which can be actuated simultaneously through one actuating action, eliminating the need for separate actuation of each locking element while maintaining burglary resistance.
Solution Approach 2:
The locking device is designed to perform multiple functions: it provides burglary resistance through multiple locking elements while simultaneously enabling simple single-action actuation. The universal design allows the same actuating mechanism to control all locking elements regardless of their position or orientation on the door leaf elements.
2Reliability
If coupling rods are permanently connected to transmit forces between locking devices, then reliable force transmission is achieved, but assembly complexity and installation effort increase
Solution Approach 1:
The coupling rod is divided into multiple separable sections (first coupling rod section, second coupling rod section) that can be independently assembled and connected. Each section can be attached to different door leaf elements, and they connect through simple coupling mechanisms (such as coupling elements or interlocking features) rather than requiring permanent connection, reducing assembly complexity while maintaining force transmission reliability.
Solution Approach 2:
The coupling rod sections are designed to be pre-assembled or pre-positioned on door leaf elements before final locking device installation. This preliminary arrangement allows for easier alignment and connection during assembly, reducing the overall installation effort while ensuring proper force transmission paths are established.
3Reliability
If door leaf elements are assembled with complex locking arrangements during installation, then burglary security is ensured, but installation time and effort increase
Solution Approach 1:
Locking device components including coupling rod sections are designed to be pre-assembled or pre-configured before final installation on the door leaf. This preliminary preparation allows for quality control and proper alignment to be performed during manufacturing rather than during field installation, significantly reducing installation time while ensuring burglary security requirements are met.
Solution Approach 2:
The locking arrangement is segmented into modular components (locking elements, coupling rod sections, actuating mechanisms) that can be independently assembled and tested. This modularity allows for simplified field assembly where components are connected through straightforward interfaces rather than complex permanent bonding processes, reducing installation time while maintaining security integrity.
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
This solution simplifies the assembly process and ensures reliable transmission of forces for secure locking, reducing the effort required for installation and improving burglary security by allowing preassembly of door leaf elements and coupling rods, and eliminating the need for separate pretensioning elements.
Implementation Method 1
coupling rods with shear and tensile force transmission surfaces... ensuring reliable force transmission between the actuating device and the locking devices
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
The integrated latch assembly has two door leaf elements (10,20) comprising cover units and latch units (14,24) respectively. Two coupling rods are received slidably in rectangular guide channels of cover units toward the pivot axis and are fixed with respect to door leaf elements respectively. End portions of two coupling rods are connected via a connecting portion such that transmission of thrust and pulling movements form one coupling rod to another coupling rod is performed in simple manner.