Striker Assembly With Interlocking Stamped Latches
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Solution Overview
Problem
Existing striking plate arrangements for door or window locks are costly to produce and require complex assembly processes due to the need for precise positioning and high production costs associated with milled projections or depressions for locking elements.
Innovation Solution
The striking plate arrangement features latching elements on the narrow sides of the closing edge plate and coupling sections of the base plate, allowing for adjustable positioning without the need for screw connections, enabling the use of stamped parts and reducing production costs, with a cover plate providing stop surfaces and increased security through toothed designs and a magnetic holder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If milled projections or depressions are used as locking elements, then precise positioning and reliable locking are achieved, but production costs increase significantly
Solution Approach 1:
The patent replaces expensive milled locking elements with simple, inexpensive stamped metal parts featuring punching or pressed locking elements. These simpler locking elements achieve sufficient locking reliability without the high production costs of milled projections or depressions, embodying the principle of using cheaper components that fulfill the functional requirement.
Solution Approach 2:
The invention extracts the essential locking function from complex milled structures and implements it through simpler punched or pressed features on stamped parts. This separation allows the base plate and closing edge plate to be manufactured as simple stamped components with minimal post-processing, significantly reducing production costs while maintaining adequate locking reliability.
2Adaptability or versatility
If the closing edge plate is held loosely by screw connections, then adjustability is achieved, but assembly complexity and production costs increase
Solution Approach 1:
The patent implements a self-aligning and self-latching mechanism where the closing edge plate with punching locking elements automatically engages with corresponding features on the base plate during insertion. This eliminates the need for separate screw connections or complex adjustment mechanisms, reducing assembly complexity while preserving adjustability through the ability to reposition and re-latch.
Solution Approach 2:
The invention removes screw connections and complex fastening mechanisms from the assembly, retaining only the essential locking function through simple punching elements. This extraction simplifies the device structure and assembly process while maintaining the ability to adjust the closing edge position by removing and repositioning the plate.
3Manufacturing precision
If exact positioning of the striking plate is achieved through moving the entire plate or reworking edges, then precise bolt engagement is achieved, but work time and production costs increase
Solution Approach 1:
The patent divides the striking plate into modular components (base plate and closing edge plate) with standardized locking interfaces. This segmentation allows for precise positioning through simple assembly of pre-fabricated components rather than time-consuming movement or reworking of the entire plate, reducing assembly time while maintaining positioning precision.
Solution Approach 2:
The locking elements (punched projections or depressions) are pre-formed on the stamped parts during manufacturing. This preliminary action eliminates the need for time-consuming on-site adjustment or reworking of plate edges, as the positioning features are already prepared and simply need to be engaged during assembly.
Data Source
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AI summary
A strike plate assembly for a door or window lock comprises a base plate, attachable to the frame of a door or window, in which a recess is formed for the engagement of a locking element of the door or window lock, and a strike plate, connectable to the base plate, which defines a closing edge within the recess that is engaged by the locking element. Interlocking locking elements are provided on both the base plate and the strike plate, allowing the base plate and the strike plate to be locked together in different locking positions. The locking elements are formed on at least one narrow side of the strike plate extending transversely to the closing edge and on at least one coupling section of the base plate pointing towards the recess.