Pivot Door Dual-Side Espagnolette Locks for Synchronized Unlocking
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Solution Overview
Problem
Pivot doors lack effective locking mechanisms on the bearing side, which compromises security and functionality, especially when conventional rear hinge security devices are not applicable due to the rotation curve of the hinge or bearing side of the leaf.
Innovation Solution
A locking system for pivot doors featuring dual espagnolette locks on both the actuation and bearing sides, each with a drive mechanism for motorized unlocking, and a nut switch on the actuation side to control both locks, ensuring synchronized unlocking via electric motors and allowing manual operation from the inside using a conventional door handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual espagnolette locks are installed on both the actuation side and bearing side of the pivot door, then burglar resistance is improved, but device complexity increases
Solution Approach 1:
The patent combines two separate locking mechanisms (first espagnolette lock on actuation side and second espagnolette lock on bearing side) into a unified locking system that operates through a single control interface. The nut switch on the actuation side serves as a common control element that triggers both locks simultaneously, merging the control functions while maintaining separate locking mechanisms for enhanced security.
Solution Approach 2:
The nut switch serves multiple functions: it acts as a manual operating element for mechanical locking/unlocking, a control switch for the first electric motor, and a control switch for the second electric motor. This multi-functionality reduces the need for separate control mechanisms for each lock, thereby managing complexity while providing comprehensive security coverage on both sides of the pivot door.
2Ease of operation
If motorized drives are provided for both espagnolette locks, then ease of operation is improved, but device complexity increases
Solution Approach 1:
Both electric motors (first motor for actuation side lock, second motor for bearing side lock) are controlled through a single nut switch, merging the control functions into one interface. This allows automated operation of both locks through one control element, improving ease of operation while managing system complexity through unified control logic.
Solution Approach 2:
The locking system provides automated operation through electric motors that can be triggered by the nut switch, eliminating the need for manual manipulation of separate locking mechanisms. The system serves itself by automatically coordinating the unlocking sequence of both locks, reducing user effort while maintaining manageable complexity through centralized control.
3Ease of operation
If the lock nut is designed to mechanically unlock only the first espagnolette lock, then ease of operation is improved, but reliability deteriorates due to premature unlocking
Solution Approach 1:
The nut switch provides feedback control by detecting the mechanical operation of the lock nut and using this signal to trigger both electric motors. This feedback mechanism ensures that the second lock is activated in response to the first lock's unlocking sequence, preventing premature unlocking and ensuring coordinated operation of both locking mechanisms while maintaining simple manual operation.
Solution Approach 2:
The system performs preliminary action by activating the second electric motor in coordination with the first motor through the nut switch, ensuring that both locks are prepared for simultaneous or sequenced unlocking. This preliminary coordination prevents the first lock from unlocking before the second lock is ready, avoiding premature unlocking issues while keeping the manual operation interface simple.
Data Source
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AI summary
The invention relates to a locking system (6) for a pivot door, the door leaf (2) of which is rotatable about a rotational axis (3) located within the door leaf (2), wherein the rotational axis (3) divides the door leaf (2) into a first section (2a) assigned to an actuating side (B) and a second section (2b) assigned to a bearing side (L) opposite the actuating side (B), with a first espagnolette lock (7) arranged on the actuating side (B), which has a first main lock (9) and one or more additional locking devices (11) connected to the first main lock (9) via one or more espagnolettes (13), and a second espagnolette lock (8) arranged on the bearing side (L), which has a second main lock (10) and one or more additional locking devices (12) connected to the second main lock (10) via one or more espagnolettes (14).wherein the first espagnolette lock (7) has a first drive (15) and the second espagnolette lock (8) has a second drive (16), with which the first and second espagnolette locks (7, 8) can be at least unlocked by motor, wherein the first main lock (15) has a lock nut (25) into which an actuating element, e.g. a door handle (24), is inserted or can be inserted, and has a nut switch (26) that can be actuated by the lock nut (25) when the nut is actuated, wherein by actuating the nut switch (26), both the first drive (15) of the first espagnolette lock and the second drive (16) of the second espagnolette lock can be controlled for unlocking.