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
Engineering Contradiction Analysis
1Reliability
If conventional locking mechanisms use visible fasteners and additional covers, then secure mounting is achieved, but aesthetic appeal deteriorates
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.
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.
2Shape
If conventional locking mechanisms use additional covers to conceal fasteners, then aesthetic appeal improves, but device complexity increases
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.
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.
3Ease of manufacture
If conventional locking mechanisms use standard mounting methods, then ease of manufacture is maintained, but installation simplicity deteriorates
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.
Data Source
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.


