Espagnolette Lock Latch Bolt Intermediate Positioning
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Solution Overview
Problem
Existing multi-point lock systems face issues where the triggering of the main lock does not necessarily engage the secondary lock bolt due to warping, causing the bolt and bolt entry opening to misalign, resulting in ineffective locking.
Innovation Solution
A pivotably mounted blocking element with a blocking lug holds the latch in a partially extended intermediate position, and a force-loaded latch bolt is applied transversely to ensure the trigger and bolt are spatially close, forming a secure lock that resists vertical movement and is self-sufficient even with partial warping, combined with a swivel bolt and slide interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the latch bolt is triggered from the main lock, then the main lock engages, but the secondary lock bolt does not necessarily engage due to warping causing misalignment between the bolt and bolt entry opening
Solution Approach 1:
The locking system is divided into independent secondary lock units, each with its own latch bolt and blocking element mechanism. This segmentation allows each unit to function independently, compensating for warping-induced misalignment in individual sections while maintaining overall system reliability.
Solution Approach 2:
A blocking element with blocking lug acts as an intermediary between the latch bolt and the bolt entry opening. The blocking element can be pivoted to engage or disengage the blocking lug with the latch bolt, providing a mechanical intermediary that ensures proper engagement even when warping causes slight misalignments between the bolt and opening.
2Reliability
If the blocking element is pivoted to engage the blocking lug, then secure locking is achieved, but the mechanism becomes more complex
Solution Approach 1:
The blocking element and latch bolt are combined within a single secondary lock housing, and the blocking element's pivoting motion is directly coupled with the latch bolt's movement. This merging reduces the need for separate control mechanisms and simplifies the overall trigger system while maintaining secure locking functionality.
Solution Approach 2:
The blocking element is designed to automatically pivot into the engaged position when the latch bolt is actuated, and to automatically disengage when the latch bolt retracts. This self-service mechanism eliminates the need for additional actuators or complex control systems, reducing device complexity while ensuring reliable engagement.
3Adaptability or versatility
If the latch bolt is held in an intermediate position by the blocking element, then misalignment due to warping is compensated, but the latch bolt cannot fully extend
Solution Approach 1:
The blocking element is designed with a pivoting motion that allows it to dynamically adjust its position. When warping causes misalignment, the blocking element pivots to an intermediate angle that maintains engagement while accommodating the positional deviation, allowing the latch bolt to function effectively without requiring full extension.
Solution Approach 2:
The latch bolt is designed to extend partially into the bolt entry opening, which is sufficient for secure locking. The blocking element ensures that this partial extension is maintained and secured, eliminating the need for the latch bolt to achieve full theoretical extension. This partial action is adequate for the locking function while accommodating warping-induced misalignment.
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
This configuration ensures secure locking against burglary by maintaining engagement of the latch bolt and bolt opening, preventing manual pushing back and maintaining security even with misalignment due to warping, and allows for easy production and operation.
Implementation Method 1
a latch with trigger is provided in the main lock case and in which the latch forms a locking device for a spring-loaded connecting rod, which when released causes the connecting rod and the bolts of the secondary locks connected to it to move into the locking position
Implementation Method 2
the blocking element is a lever that is pivotably mounted in the latch bolt and has a blocking lug that has the blocking element, and that the blocking element holds the latch in a partially extended intermediate position
Implementation Method 3
in this intermediate position, a blocking means of a force-loaded latch bolt in the lock housing that is applied transversely to the latch bolt
Implementation Method 4
the slide is associated with a finger on a swivel bolt, since this ensures interaction. The combination of a latch bolt and a swing bolt provides a high level of security against burglary
Data Source
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AI summary
The invention relates to a lock, in particular an espagnolette, having at least one latching bolt (10), which is forced in the advancement direction by a latch spring (16) and, in a first latch-advancement position, in which substantially just one latch-head portion having the latch slope projects beyond a lock-case-front rail (25), is retained by a releasable arresting member and extends from said first latch-advancement position, following return displacement of the latch and release of the arresting member, into a second latch-advancement position, in which a bolt portion which follows the latch slope emerges in front of the lock-case-front rail (25), wherein the latching bolt (10) is assigned to a secondary lock case (3), which can be actuated by driving rods by way of a main lock, and the secondary lock has a bolt (11), which can be actuated by separate driving-rod slides (13). In order to achieve straightforward but, as it were, secure locking at a distance from the main lock, provision is made for the arresting member to be a lever which is mounted in a pivotable manner in the latching bolt (10) and has an arresting nose (32), which exhibits the arresting element (31), and for the arresting element (31) to retain the latching bolt (10) in a partially extended intermediate position and for a blocking means (35) of a force-activated slide (17), which is mounted in the secondary-lock housing (12) such that it can be displaced transversely to the latching bolt (10), to be active in said intermediate position.