Sliding Door Lock Marking Element for Precise Hole Installation
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Solution Overview
Problem
Existing sliding door locks require a larger latch insertion hole with elongated slots for installation flexibility, which complicates precise hole provision and increases manufacturing costs.
Innovation Solution
A lock design featuring a latch with a circular marking element that aligns with a cylindrical hole on the jamb, allowing for precise hole drilling during installation, and a contrast plate with a flap retention element for secure engagement, eliminating the need for pre-drilled slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an elongated slot hole is provided on the jamb for latch insertion, then installation flexibility and tolerance for position estimation errors are improved, but the hole requires larger dimensions and more complex provision during jamb manufacturing
Solution Approach 1:
The latch is designed with a marking element that strikes the jamb during installation to indicate the precise center position for hole drilling. This preliminary marking action enables accurate hole provision without requiring complex elongated slots or extensive tolerance adjustments during manufacturing.
2Reliability
If a larger elongated hole is provided for latch insertion, then tolerance for position errors is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The marking element on the latch strikes the jamb to create a precise reference mark before hole drilling. This preliminary action ensures accurate positioning with a simple circular hole, avoiding the need for complex elongated shapes while maintaining high position tolerance through the marking mechanism.
3Adaptability or versatility
If an elongated slot hole is used for latch insertion, then adaptability to installation conditions is improved, but manufacturing precision requirements worsen due to the need for larger dimensional tolerances
Solution Approach 1:
The marking element creates a precise center mark on the jamb during latch installation, enabling accurate drilling of a circular hole with tight tolerances. This preliminary marking action provides adaptability to various installation conditions while maintaining high manufacturing precision, eliminating the need for elongated slots with loose tolerances.
Data Source
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AI summary
A lock (10), particularly for sliding doors (11) and the like, which comprises a latch (12) supported so that it can slide and rotate by a main body (13) that is associated with a leaf (14) and accommodates means (15) for actuating the latch (12), which can be operated by the user to pass - from a first configuration, in which the latch (12) is substantially retracted into the main body (13), - to a second configuration, in which the latch (12) is extracted from the main body (13), - and vice versa. The latch (12) comprises an element (16) for marking by striking a jamb (17) that supports an element (18) for retaining the latch (12). On the jamb (17) there is a hole (19), which has a substantially circular cross-section with its axis (A) aligned with the marking element (16) when the latch (12) is in the second configuration. A contrast plate (20), which partially covers the hole (19) and is provided with the retention element (18), is associated with the jamb (17).