A type of steel door latch for ships

Abstract

This invention relates to the field of shipbuilding technology and discloses a ship steel door latch, comprising: a rotating component, one end of which is rotatably mounted on a door frame outside the door; an elbow plate, which is fixedly mounted on the steel door outside the door; a pressure plate, which is disposed outside the door, with a first end detachably connected to the rotating component and a second end rotatably connected to the elbow plate via a first rotating shaft; and a first elastic member, which is fitted onto the rotating shaft, with one end abutting against the pressure plate and the other end abutting against the steel door. When the connection between the first end of the pressure plate and the rotating component is released, the first elastic member can drive the first end of the pressure plate to rotate away from the door frame. This ship steel door latch increases the opening angle of the steel door and prevents the pressure plate from affecting the opening of the steel door.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, specifically to a steel door latch for ships. Background Technology

[0002] Steel doors are commonly used outfitting components on ships, generally designed for weathertightness. When some weathertight steel doors need to be modified to be watertight due to changes in tightness requirements, a pressure-locking latch can be added to the door frame structure to enhance watertightness. However, the pressure-locking latch is usually installed at the door hinge. Figure 1 As shown, the locking mechanism generally includes a pressure plate 2 fixedly connected to the steel door 1. The other end of the pressure plate 2 is connected to a hinge bolt 3, and the other end of the hinge bolt 3 is rotatably connected to the door frame structure. Since the hinge bolt 3 needs to pass through the pressure plate 2 and is fixedly connected to the pressure plate 2 by a nut 4, the end of the pressure plate 2 needs to extend outside the hinge bolt 3. When the door is opened, the pressure plate 2 at this point will abut against the door frame structure as the door rotates, so that the maximum opening angle of the steel door 1 is only about 90°, making the actual passage size of the steel door smaller. Summary of the Invention

[0003] The purpose of this invention is to provide a steel door latch for ships to solve the technical problems in the prior art: when adding a latch to increase the watertightness of steel doors in the prior art, the opening angle of the steel door is easily reduced, which reduces the actual passage size of the steel door.

[0004] To achieve the above objectives, the present invention provides a ship steel door latch, wherein the steel door is rotatably mounted on a door frame via a hinge, and the ship steel door latch includes:

[0005] A rotating component, one end of which is rotatably mounted on the door frame outside the door;

[0006] Elbow plate, which is fixedly installed on the steel door outside the door;

[0007] A pressure plate is installed outside the door. The first end of the pressure plate is detachably connected to the rotating component, and the second end of the pressure plate is rotatably connected to the elbow plate via a first rotating shaft.

[0008] The first elastic element is fitted on the rotating shaft, with one end of the first elastic element abutting against the pressure plate and the other end of the first elastic element abutting against the steel door.

[0009] When the connection between the first end of the pressure plate and the rotating component is released, the first elastic element can drive the first end of the pressure plate to rotate away from the door frame.

[0010] As a preferred embodiment, the rotating component is a hinge bolt, one end of which is fixedly connected to a first ear plate. The first ear plate is fixedly connected to the door frame, and the first ear plate has a mounting hole in which a second rotating shaft is installed.

[0011] As a preferred embodiment, the other end of the hinge bolt is a threaded rod that passes through the first end of the pressure plate, and a nut is detachably installed at the end of the threaded rod.

[0012] As a preferred embodiment, the first end of the pressure plate is provided with an opening groove that matches the threaded rod, and the nut is installed on the threaded rod and pressed against the edge of the opening groove to lock the threaded rod.

[0013] As a preferred embodiment, a second elastic element is installed on the second rotating shaft, one end of the second elastic element abuts against the ear plate, and the other end of the second elastic element abuts against the threaded rod.

[0014] As a preferred embodiment, a second ear plate is fixedly connected to the second end of the pressure plate, and both the elbow plate and the second ear plate are set in a concave arc shape on the side away from the hinge bolt.

[0015] As a preferred embodiment, a door catch structure is also provided on the side of the second end of the pressure plate near the door frame. The door catch structure includes a support block provided on the pressure plate and a magnetic catch block installed on the support block.

[0016] When the steel door is opened, the second end of the pressure plate abuts against the door frame, and the magnetic block is attracted and connected to the door frame.

[0017] As a preferred embodiment, the pressure plate includes a first plate and a second plate that are rotatably connected by a hinge, and the rotation direction of the first plate and the second plate is the same as the rotation direction of the rotating component;

[0018] Both the first plate and the second plate are fixedly provided with lugs, and the two lugs are connected by a third elastic element;

[0019] The third elastic element has a first state in which the first plate and the second plate are elastically supported in a flat plate shape;

[0020] During the opening of the steel door, the third elastic element also has a second state, in which the rotational force of the steel door overcomes the spring force of the third elastic element so that the angle between the first plate and the second plate is less than 180 degrees.

[0021] Compared with the prior art, the beneficial effects of the steel door latch for ships according to an embodiment of the present invention are as follows:

[0022] The ship steel door latch of this invention includes a rotating component, an elbow plate, a pressure plate, and a first elastic element. One end of the rotating component is rotatably mounted on the door frame outside the door. The elbow plate is fixedly mounted on the steel door outside the door. The pressure plate is located outside the door, with its first end detachably connected to the rotating component and its second end rotatably connected to the elbow plate via a first rotating shaft. The pressure plate simultaneously connects the rotating component and acts as a latch, thereby increasing the watertightness of the steel door. The first elastic element is fitted onto the rotating shaft, with one end abutting against the pressure plate and the other end abutting against the steel door. When the steel door needs to be opened, the connection between the first end of the pressure plate and the rotating component is first released, leaving the first end of the pressure plate as a free end. The elastic force of the first elastic element drives the first end of the pressure plate to rotate away from the door frame, opening the steel door. Because the first end of the pressure plate rotates away from the door frame, when the steel door is opened to approximately 90 degrees, the first end of the pressure plate still does not abut against the door frame, increasing the opening angle of the steel door and preventing the pressure plate from affecting the opening of the steel door. Attached Figure Description

[0023] Figure 1 A schematic diagram of the steel door latch for ships according to the present invention;

[0024] Figure 2 yes Figure 1 Top view;

[0025] Figure 3 This is a schematic diagram of a ship's steel door latch in the closed state;

[0026] Figure 4 This is a schematic diagram of a ship's steel door latch in the open position.

[0027] Figure 5 This is a schematic diagram of the pressure plate structure.

[0028] In the picture:

[0029] 1. Steel door; 2. Pressure plate; 21. First pressure plate; 22. Second pressure plate; 23. Third elastic element; 3. Hinged bolt; 31. Threaded rod; 4. Door frame; 5. Elbow plate; 6. First pivot; 7. First elastic element; 8. First ear plate; 9. Nut; 10. Second ear plate; 11. Door catch structure; 12. Second pivot. Detailed Implementation

[0030] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0031] like Figures 1 to 5As shown in the preferred embodiment of the present invention, the steel door 1 is rotatably mounted on the door frame 4 via a hinge, and the lock of the ship steel door 1 of this application is installed between the door frame 4 and the steel door 1 on the hinge side.

[0032] Specifically, the embodiment of the lock of the steel door 1 includes a rotating component, an elbow plate 5, a pressure plate 2, and a first elastic element 7. One end of the rotating component is rotatably mounted on the door frame 4 outside the door; the elbow plate 5 is fixedly mounted on the steel door 1 outside the door; the pressure plate 2 is located outside the door, with its first end detachably connected to the rotating component and its second end rotatably connected to the elbow plate 5 via a first rotating shaft 6. When the steel door 1 is closed, the pressure plate 2 is in a vertical state. The pressure plate 2 simultaneously connects the rotating component and acts as a locking mechanism to increase the watertightness of the steel door 1; the first elastic element 7 is fitted onto the rotating shaft, with one end of the first elastic element 7 abutting against the pressure plate 2, and the other end of the first elastic element 7... When the steel door 1 is closed, the first end of the pressure plate 2 is connected to the rotating component, and the first elastic element 7 is in a compressed state. When the steel door 1 needs to be opened, the connection between the first end of the pressure plate 2 and the rotating component is first released, and the first end of the pressure plate 2 is a free end. The elastic force of the first elastic element 7 can drive the first end of the pressure plate 2 to rotate away from the door frame 4, thus opening the steel door 1. Since the first end of the pressure plate 2 rotates away from the door frame 4, when the steel door 1 is opened to about 90 degrees, the first end of the pressure plate 2 is still not in contact with the door frame 4. The steel door 1 can be further opened to about 130 degrees, increasing the opening angle of the steel door 1 and preventing the pressure plate 2 from affecting the opening of the steel door 1.

[0033] The rotating component is a hinge bolt 3, one end of which is fixedly connected to a first ear plate 8. The first ear plate 8 is fixedly connected to the door frame 4. The first ear plate 8 has a mounting hole, in which a second rotating shaft 12 is installed. The second rotating shaft 12 can be used to connect the hinge bolt and the first ear plate 8.

[0034] In a specific embodiment of this application, the other end of the hinge bolt 3 is a threaded rod 31, which passes through the first end of the pressure plate 2. A nut 9 is detachably installed at the end of the threaded rod 31. The nut 9 matches the threaded rod 31 and is used to fix the threaded rod 31 to the pressure plate 2.

[0035] In a further embodiment of this application, the first end of the pressure plate 2 is provided with an opening groove that matches the threaded rod 31. The end of the threaded rod 31 enters the opening groove from the opening of the opening groove. The nut 9 is installed on the threaded rod 31 and is pressed against the edge of the opening groove to lock the threaded rod 31. Using the nut 9 for locking has the advantage of easy disassembly.

[0036] In a further embodiment of this application, a second elastic element is installed on the second rotating shaft 12. One end of the second elastic element abuts against the ear plate, and the other end of the second elastic element abuts against the threaded rod 31. Since the threaded rod 31 of the hinge bolt 3 is at a free end when the steel door 1 is opened, the opening of the steel door 1 contacts the threaded rod 31, causing the threaded rod 31 to rotate. Figure 4 As shown, when the steel door 1 is closed, the threaded rod 31 is not easy to reset. Therefore, installing the second elastic element can facilitate the reset of the threaded rod 31 when the steel door 1 is closed, and facilitate the installation of the nut 9.

[0037] In a specific embodiment of this application, a second ear plate 10 is fixedly connected to the second end of the pressure plate 2. The elbow plate 5 and the second ear plate 10 are both set in a concave arc shape on the side away from the hinge bolt 3. When the nut 9 is removed so that the first end of the pressure plate 2 is a free end, the fact that the elbow plate 5 and the second ear plate 10 are both set in a concave arc shape on the side away from the hinge bolt 3 can prevent interference between the elbow plate 5 and the second ear plate 10 and the steel door 1 when the pressure plate 2 and the steel door 1 are rotated to a certain angle, thus avoiding affecting the opening angle of the steel door 1.

[0038] In a specific embodiment of this application, a door catch structure 11 is also provided on the side of the second end of the pressure plate 2 near the door frame 4. The door catch structure 11 includes a support block provided on the pressure plate 2 and a magnetic catch block installed on the support block. When the steel door 1 is opened, the second end of the pressure plate 2 abuts against the door frame 4, and the magnetic catch block is attracted and connected to the door frame 4, which facilitates the positioning of the pressure plate 2.

[0039] In a specific embodiment of this application, to further increase the opening angle of the steel door 1 and avoid the influence of the pressure plate 2 on the opening of the steel door, the specific structure of the pressure plate 2 can be set as follows: the pressure plate 2 includes a first plate and a second plate connected by a hinge, the rotation direction of the first plate and the second plate is the same as the rotation direction of the rotating component; the first plate and the second plate are also fixedly provided with lugs, and the two lugs are connected by a third elastic member 23; specifically, the third elastic member 23 has a first state in which the first plate and the second plate are elastically supported in a flat state, that is, when the steel door 1 is closed or the steel door 1 is opened at a certain angle, the elastic force of the third elastic member 23 can fix the first plate and the second plate so that they are in a flat state; and when the steel door 1 needs to further increase the opening angle, the third elastic member 23 also has a second state, in which the rotational force of the steel door 1 overcomes the spring force of the third elastic member 23 so that the angle between the first plate and the second plate is less than 180 degrees. In this state, the opening angle of the steel door 1 can be further increased, which facilitates the transportation of goods through the steel door 1.

[0040] In this application, the first elastic element 7, the second elastic element and the third elastic element 23 can be springs or compression springs or other elastic components, and their specific elastic force settings are designed according to specific usage requirements.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A steel door latch for ships, wherein, The steel door is mounted on the door frame by hinges, characterized in that the ship's steel door latch includes: A rotating component, one end of which is rotatably mounted on the door frame outside the door; Elbow plate, the elbow plate being fixedly installed on the steel door outside the door; A pressure plate is installed outside the door. The first end of the pressure plate is detachably connected to the rotating component, and the second end of the pressure plate is rotatably connected to the elbow plate via a first rotating shaft. The first elastic element is fitted on the rotating shaft, with one end of the first elastic element abutting against the pressure plate and the other end of the first elastic element abutting against the steel door. When the connection between the first end of the pressure plate and the rotating component is released, the first elastic element can drive the first end of the pressure plate to rotate away from the door frame.

2. The ship steel door latch as described in claim 1, characterized in that, The rotating component is a hinge bolt, one end of which is fixedly connected to a first ear plate. The first ear plate is fixedly connected to the door frame. The first ear plate has a mounting hole, and a second rotating shaft is installed in the mounting hole.

3. The ship steel door latch as described in claim 2, characterized in that, The other end of the hinge bolt is a threaded rod that passes through the first end of the pressure plate, and a nut can be detachably installed at the end of the threaded rod.

4. The ship steel door latch as described in claim 3, characterized in that, The first end of the pressure plate is provided with an opening groove that matches the threaded rod. The nut is installed on the threaded rod and is pressed against the edge of the opening groove to lock the threaded rod.

5. The ship steel door latch as described in claim 3, characterized in that, A second elastic element is installed on the second rotating shaft. One end of the second elastic element abuts against the ear plate, and the other end of the second elastic element abuts against the threaded rod.

6. The ship steel door latch as described in claim 2, characterized in that, The second end of the pressure plate is fixedly connected to a second ear plate, and the elbow plate and the side of the second ear plate away from the hinge bolt are both set as concave arc shape.

7. The ship steel door latch as described in claim 1, characterized in that, The second end of the pressure plate is also provided with a door catch structure on the side near the door frame. The door catch structure includes a support block provided on the pressure plate and a magnetic catch block installed on the support block. When the steel door is opened, the second end of the pressure plate abuts against the door frame, and the magnetic block is attracted and connected to the door frame.

8. The ship steel door latch as described in claim 1, characterized in that, The pressure plate includes a first plate and a second plate that are rotatably connected by a hinge, and the rotation direction of the first plate and the second plate is the same as the rotation direction of the rotating component. Both the first plate and the second plate are fixedly provided with lugs, and the two lugs are connected by a third elastic element; The third elastic element has a first state in which the first plate and the second plate are elastically supported in a flat plate shape; During the opening of the steel door, the third elastic element also has a second state, in which the rotational force of the steel door overcomes the spring force of the third elastic element so that the angle between the first plate and the second plate is less than 180 degrees.

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