Lock Blocking Element Oblique Contact for Latch Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional locks fail to ensure the latch bolt remains secured against being pushed back when the lock latch cannot be fully extended, often due to insufficient rebate clearance, which compromises the blocking effect and burglary security.
Innovation Solution
The blocking element and actuator are connected by a defined force, allowing them to move relative to each other when necessary, with an obliquely arranged contact section and contact area enabling partial insertion into a free space even if the latch is not fully extended, and step surfaces directing forces perpendicularly to prevent the blocking element from being dislodged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the blocking element is firmly connected to the actuator, then the blocking effect is maintained, but the locking mechanism fails when the latch cannot be fully extended due to insufficient rebate clearance
Solution Approach 1:
The connection between the blocking element and actuator is designed to be dynamic rather than rigid. The blocking element can move relative to the actuator along the actuator's displacement path, allowing the system to adapt when the latch cannot be fully extended. This dynamic connection maintains the blocking effect while accommodating variations in rebate clearance.
Solution Approach 2:
The blocking element is designed to be partially insertable into the free space even when the latch is not fully extended. The oblique contact section allows the blocking element to engage with the contact area at intermediate positions, providing a blocking effect without requiring complete extension of the latch.
2Reliability
If the blocking element is designed to be firmly connected to the actuator, then the blocking effect is ensured, but the lock cannot accommodate cases where the latch bolt is not fully extended
Solution Approach 1:
The dynamic connection allows the blocking element to adjust its position relative to the actuator during the locking operation. When the latch cannot be fully extended, the blocking element can still move to engage with the contact area, maintaining security while simplifying the operation under constrained conditions.
Solution Approach 2:
The system automatically adjusts the relative position of the blocking element and actuator during the locking process. The oblique contact section and defined force connection enable the blocking element to self-adjust to the available free space without requiring external intervention or complex control mechanisms.
3Reliability
If the contact section and contact area are arranged perpendicularly, then the blocking element can be firmly positioned, but the blocking element cannot be inserted into the free space when the latch is not fully extended
Solution Approach 1:
The contact section and contact area are arranged obliquely rather than perpendicularly, creating an asymmetric configuration that enables the blocking element to be inserted at intermediate positions. This oblique arrangement allows the blocking element to engage with the contact area gradually as it moves into the free space, maintaining the blocking effect while improving adaptability.
4Reliability
If the blocking element and actuator are firmly connected, then the blocking effect is maintained, but the system cannot adapt when the latch reaches its limit before full extension
Solution Approach 1:
The dynamic connection between the blocking element and actuator allows the system to adapt to the latch extension limits. When the latch reaches its limit, the blocking element can still move relative to the actuator to engage with the contact area, maintaining the blocking effect while adapting to the constrained position.
Solution Approach 2:
The blocking element is designed to provide a blocking effect even at partial insertion into the free space. The oblique contact section enables the blocking element to engage with the contact area at intermediate positions, providing sufficient blocking effect without requiring the latch to be fully extended.
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 the latch bolt is reliably prevented from being pushed back, maintaining security even when the latch is not fully extended, and allows the blocking element to be fully inserted when extended, enhancing overall locking performance.
Implementation Method 1
The defined predetermined force can be generated, for example, by spring preload
Implementation Method 2
The defined predetermined force can be generated, for example, by spring preload, by latching, by a clamped connection or by frictional engagement
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The lock i.e. three-latch lock (2), has a blocking element with a blocking section engaged in a free space, during locking of a main lock (3) and auxiliary locks (4), where the free space is defined by an attachment area. The blocking section has an attachment section that is attached to the attachment area, where the attachment section and the attachment area run obliquely to each other. A part of the blocking section including a part of the attachment section is guided in the free space, when lock latches (6, 9) are present between extended and retracted positions.