Espagnolette Lock With Separate Drive Paths for Reliable Unlocking
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Solution Overview
Problem
Existing deadbolt locks with both motor-driven and manual operation often have complex structures and suffer from interference between the motorized and mechanical drives, compromising functional reliability.
Innovation Solution
A deadbolt lock design featuring a slide plate actuated by a motor gear for motorized unlocking and a nut lever for manual unlocking, with separate lines of action to prevent interference, allowing for direct retraction of espagnolette bars without hindrance during manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a central slide plate is used to operate both motorized and manual lock components, then the lock can be operated by both motor and manual, but interference and jamming between the two drives occurs
Solution Approach 1:
The lock mechanism is divided into separate operational paths: the motorized drive acts on the slide plate independently, while the manual drive acts on the bell crank independently. This segmentation prevents interference between the two drive systems, allowing each to operate without jamming the other while maintaining dual operation capability.
Solution Approach 2:
The bell crank serves as an intermediary element that translates the rotational motion of the nut lever into linear motion of the retraction slides. This intermediary mechanism allows manual operation to bypass the motorized path entirely, preventing interference while enabling both operation modes.
2Reliability
If the motor gear is disengaged from the central slide plate in the rest position, then jamming between motor and manual drive is prevented, but the structure becomes more complex
Solution Approach 1:
The disengagement mechanism is achieved through segmentation of the drive paths. The motor gear engages only with the slide plate during motorized operation, while the manual drive engages with the bell crank during manual operation. This segmentation automatically prevents jamming without requiring complex disengagement mechanisms.
3Ease of operation
If the nut lever acts directly on the retraction slides for manual unlocking, then manual unlocking is simplified and faster, but the motorized drive path must be completely separated
Solution Approach 1:
The bell crank acts as an intermediary that provides a direct mechanical link between the nut lever and the retraction slides for manual operation. This intermediary path is completely separate from the motorized slide plate path, enabling fast manual unlocking while maintaining clean separation of the two drive systems.
Data Source
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AI summary
The invention relates to a drive bolt lock (2) for a passive leaf (14) with an upper drive bolt rod (24) connected to an upper retraction slide (241) and a lower drive bolt rod (25) connected to a lower retraction slide (251), wherein the two retraction slides (241, 251) are connected by means of a two-armed reversing lever (26), and wherein a motor-movable slide plate (27) is provided in order to motor-drivenly unlock the drive bolt rods (24, 25) and to manually unlock a lock nut (23) with a nut lever (231) for the drive bolt rods (24, 25).In order to ensure safe manual and motorized unlocking of the espagnolette lock (2) at all times, it is proposed that the motorized unlocking and the manual unlocking are separated in such a way that during motorized unlocking the motor (3) acts directly on the slide plate (27), wherein the slide plate (27) cooperates with the reversing lever (26) in order to pivot the latter and unlock the two espagnolette rods (24, 25), and that during manual unlocking the nut lever (231) acts directly on the lower retraction slide (251) or the upper retraction slide (241) in order to unlock the two espagnolette rods (24, 25).