Sash Lock Concealed Fastener Mounting

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Solution Overview

Problem

Conventional window locking mechanisms for sash type windows often require visible fasteners and additional covers, compromising aesthetics and ease of installation.

Innovation Solution

A window sash lock assembly with a sash lock body featuring angled fastener passages and mounting projections that conceal fasteners from view, allowing for secure mounting without additional covers, using fasteners installed from the rear and integrated with the window sash frame components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional locking mechanisms use visible fasteners and additional covers, then secure mounting is achieved, but aesthetic appeal deteriorates

Engineering Contradiction:
Improvesecure mountingVSAvoidaesthetic appeal
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The fastener is extracted from the traditional visible mounting location and routed through a concealed passage in the sash lock body. The fastener is taken out from the front view and positioned at the rear, where it cannot be seen, while still providing secure mechanical attachment.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The fastener is nested within the thickness of the sash lock body by routing it through a concealed passage. The fastener is embedded in the rear portion of the lock body, hidden within the structural depth, rather than being exposed on the surface.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Shape

If conventional locking mechanisms use additional covers to conceal fasteners, then aesthetic appeal improves, but device complexity increases

Engineering Contradiction:
Improveaesthetic appealVSAvoidnumber of components
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The fastener concealment function is merged into the sash lock body structure itself. The concealed passage is integrated as a built-in feature of the lock body, eliminating the need for separate cover components and combining the mounting and concealment functions into a single unified structure.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The sash lock body serves its own function of concealing the fastener through its inherent structural design. The lock body itself provides the concealment mechanism rather than requiring an additional service component, making the system self-sufficient.

Inventive Principle:
Principle #25Self-service

3Ease of manufacture

If conventional locking mechanisms use standard mounting methods, then ease of manufacture is maintained, but installation simplicity deteriorates

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidinstallation simplicity
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The concealed passage is pre-formed as an integral feature of the sash lock body during manufacturing. This preliminary action of creating the passage during fabrication simplifies the final installation process, as no additional drilling or modification is required at the installation stage.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS9388608B2Window locking arrangements
Publication Date: 2016.07.12 SIMONTON WINDOWS & DOORS INC
  • US9388608B2 patent drawing
  • US9388608B2 patent drawing
  • US9388608B2 patent drawing

AI summary

A sash lock assembly comprises a window sash frame component, a sash lock having a sash body, and at least one fastener. The sash lock body is mounted on a top of the window sash frame component. The sash lock body includes at least one fastener passage. One exemplary sash lock assembly has the at least one fastener is installed from a rear of the sash lock body, through the at least one angled fastener passage, and into the top of the window sash frame component to secure the sash lock body to the window sash frame component and conceal the at least one fastener is from view without applying an additional cover. One exemplary sash lock assembly has at least one mounting projection that fits within at least one opening in the top of the window sash frame component.