Sliding Window Lock Plate Adjustment Mechanism

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing sliding window and door systems face challenges in securely affixing lock plates due to manufacturing tolerances, leading to misalignment and excessive play between lock pins and plates, which affects the operation and aesthetics.

Innovation Solution

A sliding window or door leaf with a horizontal profile and upright side profile, featuring an adjustment mechanism that allows the lock plate to be adjusted from the side, using a screw thread system and carriages with undercut flanks, enabling precise positioning without removing the leaf from the frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the lock plate is firmly affixed on the leaf during manufacturing, then the structure is stable, but manufacturing tolerances cause misalignment and excessive play between lock pins and plates

Engineering Contradiction:
Improvelock operationVSAvoidlock plate alignment
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The lock plate is made adjustable along the horizontal profile after the leaf is mounted in the frame. The adjustment mechanism allows the lock plate position to be dynamically modified to compensate for manufacturing tolerances, ensuring proper alignment with the lock without requiring disassembly of the leaf from the frame.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The adjustment mechanism is pre-installed on the leaf during manufacturing, allowing the lock plate position to be fine-tuned later. This preliminary preparation enables easy adjustment without requiring complex installation procedures or removing the leaf from the frame.

Inventive Principle:
Principle #10Preliminary action

2Shape

If the lock and motor are placed in the frame for aesthetic reasons, then the minimal aspect is achieved, but there is no space to affix hardware components on the leaf

Engineering Contradiction:
Improveaesthetic minimalismVSAvoidhardware component installation
Core Design Contradiction:
ShapeVSEase of manufacture

Solution Approach 1:

The adjustment mechanism utilizes the side profile of the leaf (vertical dimension) to provide access for adjusting the lock plate position along the horizontal profile. This allows the adjustment operation to be performed from the side rather than requiring space at the top of the leaf, maintaining the aesthetic minimalism while enabling hardware component adjustment.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Manufacturing precision

If the leaf is removed from the frame to adjust the lock plate position, then precise alignment is possible, but the process becomes complex and time-consuming

Engineering Contradiction:
Improvelock plate positioningVSAvoidadjustment process
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The adjustment mechanism is designed to be operated from the side of the leaf while it remains mounted in the frame. The adjusting rod with head can be accessed from the side profile, allowing the lock plate position to be modified without removing the leaf from the frame, thereby simplifying the adjustment process while maintaining precision.

Inventive Principle:
Principle #15Dynamics

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

Ensures reliable lock operation with minimal play, maintaining aesthetic minimalism by allowing adjustment from the side, ensuring proper alignment and secure fastening without visual disturbance.

Implementation Method 1

The adjusting rod is at least partly provided with an external screw thread and which is affixed in the hole, whereby the adjusting rod has a head that is arranged to engage with a tool to rotate the adjusting rod

Methodology Applied
Scientific EffectScrew thread mechanism: Screw

Implementation Method 2

The horizontal profile is provided with a groove with undercut flanks that extends in the longitudinal direction of the horizontal profile, whereby a carriage is held in the groove

Methodology Applied
Scientific EffectUndercut groove mechanism: Mechanical Force

Data Source

PatentUS9890557B2Leaf of a sliding window or sliding door and sliding window or sliding door provided with such a leaf
Publication Date: 2018.02.13 REYNAERS ALUMINIUM NV
  • US9890557B2 patent drawing
  • US9890557B2 patent drawing
  • US9890557B2 patent drawing

AI summary

Leaf (4) of a sliding window (1) or sliding door, whereby this leaf (4) has a horizontal profile (13) and an upright side profile (12) perpendicular to the horizontal profile (13), whereby the horizontal profile (13) is provided with a lock plate (10) for a lock (9), whereby the leaf (4) is equipped with an adjustment mechanism to be able to adjust the position of the lock plate (10) in the direction (P) in which the horizontal profile (13) extends and to be able to secure the lock plate (10) to the leaf (4), whereby the adjustment mechanism can be operated from the side where the side profile (12) is located.