Locking device for a boat hatch, and hatch equipped with such a locking device
The 'master-slave' leaf locking system for boat cabin openings ensures secure and efficient closure by synchronizing the locking and unlocking of both leaves through a coordinated mechanism using an actuating piece with an inclined edge and notch.
Patent Information
- Application Number
- FR2024008622
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2026-02-06
AI Technical Summary
Existing boat cabin openings, such as portholes and doors, often fail to ensure secure and easy closure due to the lack of efficient locking mechanisms that guarantee both leaves are properly locked during operation.
A locking system is implemented with a 'master' and 'slave' leaf mechanism, where the master leaf can unlock and lock the slave leaf simultaneously, ensuring both leaves are secured together during opening and closing, using an actuating piece with an inclined edge and notch to manage the locking and unlocking processes.
The system ensures that both leaves are securely locked and unlocked in tandem, providing a reliable and efficient closure mechanism for boat cabin openings.
Smart Images

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Abstract
Description
Title of the invention: Locking device for a boat hatch, and hatch equipped with such a locking device. Scope of the invention
[0001] The invention relates to the openings of boat cabins. Previous art
[0002] The problem to be solved is to ensure more easily the correct closing of the sliding leaves closing the openings of the boat cabins. Description of the invention
[0003] The invention consists of closing a boat opening, such as a porthole or a door, with an opening formed of two leaves sliding parallel to each other in horizontal rails of the frame of the opening.
[0004] One of the leaves is called the "master leaf". It can be locked to the opening frame by a conventional locking system, with actuation means on the leaf allowing it to be manually unlocked to allow it to slide.
[0005] Another of the leaves is called the "slave leaf". It is locked by default to the opening frame by a locking system, but it does not have any means of actuation intended to unlock it manually.
[0006] During opening, the master leaf, when it slides in front of the slave leaf, can act on the locking system of the slave leaf to simultaneously: - unlock the slave leaf of the opening frame, to allow it to slide, and - lock the slave leaf to the master leaf, so that it can only slide with the master leaf.
[0007] On the contrary, during closing, when the slave leaf reaches its closed position, its locking system can, at the same time: - lock the slave leaf of the opening frame in its closed position, and - unlock the slave leaf of the master leaf, to allow the master leaf to slide towards its own closing position.
[0008] Thus, the user can be assured, when the master leaf is locked in the opening frame, that the slave leaf is also locked in the opening frame. Description of the figures
[0009] The invention will be better understood in view of the accompanying figures.
[0010] As shown in these figures representing one embodiment, the master leaf has an actuating piece. This actuating piece has an inclined edge and a notch.
[0011] During opening, when the master leaf slides in front of the slave leaf, the inclined edge of the actuating piece can move a pin on the slave leaf, unlocking the slave leaf's locking system. The actuating piece also has a notch into which the pin fits, so that the two leaves remain locked together during the subsequent opening.
[0012] During closing, the slave leaf's movement is blocked against a stop attached to the frame when the slave leaf reaches the closed position. The movement of the master leaf causes the slave leaf's pin to disengage from the notch in the master leaf's actuating mechanism. This disengagement simultaneously locks the slave leaf to the frame and unlocks it from the master leaf. The master leaf can then continue to close.
Claims
Demands
1. An opening for closing an opening in a ship's cabin, said opening being made up of at least two leaves extending in planes parallel to each other, each of said leaves being movable in translation between a closed position, in which said leaves together close said opening, and an open position in which said leaves are essentially superimposed one on top of the other, outside of said opening, a first of said leaves, said master leaf, having means for locking its position relative to the frame of the opening, in its closed position, these locking means being actuable by a user, the second of said leaves, said slave leaf, having means for locking its position relative to the frame of said opening, these locking means not being actuable by a user,The master leaf having actuation means allowing the sliding movement of the master leaf in front of the slave leaf, from its open position to its closed position, to simultaneously cause: - the unlocking of the locking means of the position of the slave leaf relative to the frame of said opening, and - the locking of the slave leaf and the master leaf.
2. Opening according to claim 1, characterized in that the sliding movement of the master leaf and the slave leaf joined together, from their closed position to their open position, simultaneously causes, when the slave leaf reaches its closed position: - the locking of the locking means of the position of the slave leaf with respect to the frame of said opening, and - the disengagement of the slave leaf and the master leaf.
3. Opening according to any one of the preceding claims, characterized in that the locking means of the slave leaf are actuated by a pin, movable between a locking position and an unlocking position, and the master leaf actuation means have an inclined face suitable for moving the movable pin towards its unlocking position, to ensure the unlocking of the locking means of the position of the slave leaf relative to the frame of said opening, and to retain the movable pin in its unlocking position to ensure the securing of the slave leaf to the master leaf.