Fixed Leaf Lock Latch Ejector Independence
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Solution Overview
Problem
The complexity of the door opener mechanism in existing passive leaf locks makes it difficult to replace the door opener, as it requires a special installation space and is integrated with the latch ejector device, limiting the use of conventional door openers.
Innovation Solution
The latch ejector device is made independent of the electric door opener and mounted outside the lock housing, allowing for the use of conventional door openers without special connections, and enabling the passive leaf lock to be equipped with or without an electric door opener.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the latch ejector device is integrated into the electric door opener, then the door opener can eject the latch, but the door opener requires a special installation space and cannot be easily replaced
Solution Approach 1:
The latch ejector device is separated from the electric door opener into an independent component. The latch ejector is mounted directly on the lock housing, while the electric door opener is a separate unit that can be independently installed or replaced. This segmentation resolves the contradiction by maintaining the latch ejection function while simplifying the door opener structure and enabling easy replacement.
2Reliability
If the door opener has a special housing shape for the latch ejector, then the latch can be ejected, but the installation space must be specially adapted and conventional door openers cannot be used
Solution Approach 1:
The latch ejector function is extracted from the electric door opener and implemented as a separate component mounted on the lock housing. This allows the electric door opener to have a standard, conventional design that can be freely replaced, while the latch ejection function is maintained through the independent latch ejector device. The special housing shape requirement is eliminated.
3Ease of repair
If the door opener is defective and needs replacement, then the lock system can be maintained, but the special integrated design makes replacement difficult
Solution Approach 1:
The system is divided into independent modules: the electric door opener and the latch ejector device. When the door opener needs replacement, only the door opener unit is removed and replaced, while the latch ejector device remains mounted on the lock housing. This segmentation enables easy replacement of the door opener while preserving the reliable latch ejection function through the separate, unchanged ejector component.
Data Source
Figure 1~3
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AI summary
The invention relates to a fixed-leaf lock (1), in particular with a panic function, comprising a lock housing (3) having a faceplate (6) with a latch opening, a lock follower (9) provided in the lock housing (3), an electric door opener (10) provided in the lock housing (3) in the area of the latch opening (7), and a latch ejector device comprising a latch ejector (14) for ejecting a latch (2) engaging in the latch opening (7). According to the invention, the latch ejector device is independent of the electric door opener (10) and the latch ejector (14) is mounted outside the electric door opener (10) in the lock housing (3).