Flush-Mount Cylinder Multi-Point Lock Modular Installation

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Solution Overview

Problem

Conventional multi-point locks require complex and expensive installation processes, involving extensive preparation of doors and the need for multiple cylinder sizes to accommodate varying door thicknesses, with the cylinder often protruding above the backplate, increasing costs and complexity.

Innovation Solution

A modular multi-point lock system with a flush-mounted cylinder assembly, using driverails and shootbolt actuating mechanisms installed in a rectangular groove, allowing for easy installation with simple tools and removal without door removal, adaptable to various door sizes with a single kit, and featuring a cylinder plug-face aligned flush with the backplate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional multi-point lock system is installed, then security and weather sealing are improved, but installation complexity and cost increase significantly

Engineering Contradiction:
ImprovesecurityVSAvoidinstallation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The lock system is divided into separate modular components: a handle set assembly with integrated cylinder and backplate, and a separate multi-point locking mechanism with multiple bolts. This segmentation allows independent installation of each module, reducing overall installation complexity while maintaining security functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The handle set backplate is designed with universal mounting features that accommodate multiple bolt configurations and door types. The integrated cylinder and backplate assembly serves multiple functions: providing key operation, structural support, and mounting interface for the locking mechanism, thereby reducing the number of separate components and simplifying installation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple Euro-profile cylinders are used to accommodate varying door thicknesses, then adaptability is improved, but inventory cost and complexity increase

Engineering Contradiction:
Improveadaptability to door thicknessVSAvoidnumber of cylinder sizes
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The cylinder mounting mechanism incorporates adjustable positioning features that allow the cylinder to be positioned at different depths and angles within the backplate assembly. This dynamic adjustment capability enables a single cylinder design to accommodate various door thicknesses and configurations, eliminating the need for multiple fixed-size cylinder variants.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The backplate and cylinder assembly incorporates adjustable parameters including mounting depth, cylinder protrusion distance, and alignment position. These adjustable parameters allow the same physical components to be configured for different door thicknesses, providing adaptability without requiring multiple fixed-size components.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If the cylinder protrudes above the backplate, then key operation is facilitated, but manufacturing cost and finishing complexity increase

Engineering Contradiction:
Improvekey operationVSAvoidfinishing complexity
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The cylinder is nested within a recessed cavity in the backplate, with only the essential key-operated portion protruding. This nesting arrangement allows the cylinder to be protected and integrated into the backplate structure, reducing the need for additional external housing and simplifying the finishing process while maintaining operational accessibility.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The cylinder mounting interface is extracted as a separate, standardized feature in the backplate design, allowing the cylinder to be independently positioned and secured. This extraction enables the cylinder to be installed flush with or slightly protruding from the backplate face without requiring complex external housing structures, thereby reducing manufacturing and finishing complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

4Reliability

If conventional multi-point locks are installed, then security is improved, but removal and replacement require door removal

Engineering Contradiction:
ImprovesecurityVSAvoidlock removal
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The locking mechanism is segmented into a handle set assembly that can be independently removed from the door, while the bolt mechanism remains mounted in the door frame. This segmentation allows the handle set and cylinder to be replaced without removing the entire locking system or the door itself, significantly easing maintenance and repair operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The handle set assembly, including cylinder and backplate, is extracted as a removable module that interfaces with the door through standardized mounting points. This extraction design allows the handle set to be easily detached and replaced by simply removing fasteners, without requiring door removal or complex disassembly procedures.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS9388611B2Multi-point lock having a flush-mount cylinder
Publication Date: 2016.07.12 HOPPE HLDG AG
  • US9388611B2 patent drawing
  • US9388611B2 patent drawing
  • US9388611B2 patent drawing

AI summary

A multi-point lock having an easy to install modular drive mechanism for bolts located at the top and bottom edges of a door in which the multi-point locking system is installed that requires only relatively simple door preparation. The bolt operating mechanism is installed into a rectangular groove cut into a lateral edge of a door which may be cut using relatively simple tools in relatively quick fashion. The multi-point lock is configured to fit doors of any size, with a single kit accommodating doors of different thicknesses, in each case, with the plug-face of the lock cylinder substantially flush with a major face of a backplate of a handle set used with a particular door.