Oxygen cylinder storage box for aircraft lavatory

Abstract

This utility model relates to an oxygen cylinder storage box for aircraft lavatories, belonging to the field of aircraft accessories, and specifically to an aircraft oxygen cylinder storage box, including a box body, a door panel, an electromagnetic lock, a hinge assembly, an oxygen cylinder bracket, a stainless steel clamp, and a limiting mechanism. Through the above design, an oxygen cylinder storage box for installation in an aircraft lavatory is provided. The sliding hinge assembly design allows the door panel to open to 180°, enabling the internal oxygen masks to fall quickly and accurately without delay. Furthermore, the limiting mechanism design limits the door panel opening to a suitable gap for inspection when the electromagnetic valve opens, improving work efficiency during maintenance and preventing the oxygen masks and cylinders inside the storage box from being affected if the door panel is fully opened.

Description

Technical Field

[0001] This application belongs to the field of aircraft parts, and in particular relates to an aircraft oxygen cylinder storage box. Background Technology

[0002] The booming development of the air transport industry has placed higher demands on flight safety, among which the reliability of emergency oxygen supply systems is directly related to passenger safety. While the chemical oxygen generation systems commonly found in modern passenger aircraft can meet routine needs, high-pressure oxygen cylinders remain an irreplaceable emergency backup in extreme situations such as sudden and sustained depressurization. Because aircraft lavatories are special enclosed spaces within the cabin, the design of their oxygen cylinder storage devices requires specific consideration.

[0003] The oxygen cylinder storage box needs to be embedded in the ceiling in the bathroom, but this will affect the door panel when the storage box is opened in an emergency and will not be able to be fully opened, and it will also cause trouble in daily maintenance.

[0004] Therefore, there is an urgent need for a technology to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device and system that address the problems existing in the background art.

[0006] An oxygen cylinder storage box for an aircraft lavatory, characterized in that it comprises: a box body, a door panel, an electromagnetic lock, a hinge assembly, an oxygen cylinder bracket, a stainless steel clamp, and a limiting mechanism.

[0007] The box is equipped with an oxygen cylinder slot, an oxygen mask slot, and a locking slot via a partition.

[0008] The box body is fitted with a door panel via a hinge assembly;

[0009] The folding assembly includes the auxiliary folding mounting hole, the folding limiting plate, the auxiliary fold, and the movable fold;

[0010] The number of auxiliary hinge mounting holes and hinge limiting plates are both two or more, and the auxiliary hinge mounting holes and hinge limiting plates are all installed on the box body; the auxiliary hinges are fixedly installed on the door panel, and their positions and numbers correspond to the auxiliary hinge mounting holes;

[0011] The movable folding mechanism includes a movable folding piece, a folding piece, a pin, and a torsion spring. The movable folding pieces are rotatably connected to the folding pieces via the pin, and a torsion spring is provided on the pin. The movable folding piece is set on the folding limiting plate, and the folding piece is fixedly set on the door panel. One end of the torsion spring is in close contact with the door panel, and the other end is in close contact with the side wall of the box.

[0012] The end of the movable folding flap is provided with a protrusion;

[0013] The oxygen cylinder support is equipped with stainless steel clamps for fixing the oxygen cylinder, and the number of stainless steel clamps is two or more.

[0014] The limiting mechanism includes a limiting plate, a spring, a limiting rod, and a limiting frame;

[0015] The limiting plate is rotatably mounted on the door panel, and a limiting rod is provided at the end of the limiting plate; one end of the spring is connected to the door panel, and the other end is connected to the limiting plate; the limiting frame is mounted on the box body, the position of the limiting frame is matched with the limiting plate, and the limiting frame is provided with an inverted T-shaped through hole that matches the limiting plate and the limiting rod.

[0016] The electromagnetic lock is equipped with a support slider, and the door panel is equipped with a working through hole that cooperates with the support slider.

[0017] The number of protrusions is two.

[0018] The folding limiting plate is connected to the box body on both sides by connecting plates. There is a gap between the folding limiting plate and the inner wall of the box body. The movable folding piece is set in the gap and can slide up and down in the gap.

[0019] The limiting piece is provided with a rotating shaft, which is rotatably connected to the door panel.

[0020] The limiting frame is a spherical bracket, and the inverted T-shaped through hole on it cooperates with the limiting piece and the limiting rod.

[0021] When the limiting piece rotates, the limiting rod at the end of the limiting piece and on it can pass through the inverted T-shaped through hole. During the rotation of the limiting piece, the limiting rod moves along the spherical surface of the limiting frame through the inverted T-shaped through hole.

[0022] MS21075L08 floating nuts are installed on all four sides of the box.

[0023] The above design provides an oxygen cylinder storage box for installation in an aircraft lavatory. This application utilizes a sliding hinge assembly design, allowing the door panel to open to 180°, enabling the internal oxygen masks to fall quickly and accurately without delay. Furthermore, the limiting mechanism design limits the door panel to a suitable gap for inspection when the solenoid valve opens, improving maintenance efficiency and preventing the oxygen masks and cylinders inside from being affected by the door panel being fully opened. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2This is a schematic diagram showing the connection between this application and the unlocking key;

[0026] Figure 3 This is a structural schematic diagram of the box body of this application;

[0027] Figure 4 This is a structural schematic diagram of the door panel in this application;

[0028] Figure 5 This is a cross-sectional view of the application in its closed state;

[0029] Figure 6 This is a cross-sectional view of the application in its open state;

[0030] Figure 7 for Figure 6 Enlarged view of region A in the middle;

[0031] Figure 8 This is a schematic diagram showing the condition of the device during repair.

[0032] Figure 9 This is a schematic diagram of the state of the limiting mechanism in this application;

[0033] 1-Box body, 2-Door panel, 3-Electromagnetic lock, 4-Oxygen cylinder bracket, 5-Stainless steel clamp, 6-Limit plate, 7-Spring, 8-Limit rod, 9-Limit frame, 10-Support slider, 11-Auxiliary hinge mounting hole, 12-Hinge limit plate, 21-Auxiliary hinge, 22-Modible hinge piece, 23-Torsion spring, 221-Protrusion, 61-Rotating shaft, 91-Inverted T-shaped through hole, 50-Unlock key. Detailed Implementation

[0034] This application will be further described in conjunction with the accompanying drawings:

[0035] An oxygen cylinder storage box for an aircraft lavatory is characterized by comprising: a box body 1, a door panel 2, an electromagnetic lock 3, a hinge assembly, an oxygen cylinder bracket 4, a stainless steel clamp 5, and a limiting mechanism.

[0036] The box 1 is equipped with an oxygen cylinder slot, an oxygen mask slot and a locking slot through a partition.

[0037] The box body 1 is fitted with a door panel 2 via a hinge assembly;

[0038] The folding assembly includes the auxiliary folding mounting hole 11, the folding limiting plate 12, the auxiliary folding 21, and the movable folding;

[0039] The number of auxiliary hinge mounting holes 11 and hinge limiting plates 12 are both two or more, and the auxiliary hinge mounting holes 11 and hinge limiting plates 12 are all installed on the box body 1; the auxiliary hinge 21 is fixedly installed on the door panel 2, and its position and number correspond to the auxiliary hinge mounting holes 11.

[0040] The movable folding mechanism includes a movable folding piece 22, a folding piece, a pin, and a torsion spring 23. The movable folding piece 22 and the folding piece are rotatably connected by the pin, and the pin is provided with a torsion spring 23. The movable folding piece 22 is disposed on the folding limiting plate 12, and the folding piece is fixedly disposed on the door panel 2. One end of the torsion spring 23 is in close contact with the door panel 2, and the other end is in close contact with the side wall of the box body 1.

[0041] The movable folding flap 22 is provided with a protrusion 221 at its end;

[0042] The oxygen cylinder support 4 is provided with stainless steel clamps 5 for fixing the oxygen cylinder. There are two or more stainless steel clamps 5. The number of stainless steel clamps 5 is related to the size of the oxygen cylinder to be fixed. There can be two stainless steel clamps 5 or three stainless steel clamps 5.

[0043] The limiting mechanism includes a limiting plate 6, a spring 7, a limiting rod 8, and a limiting frame 9;

[0044] The limiting plate 6 is rotatably mounted on the door panel 2, and the end of the limiting plate 6 is provided with a limiting rod 8; one end of the spring 7 is connected to the door panel 2, and the other end is connected to the limiting plate 6; the limiting frame 9 is mounted on the box body 1, the position of the limiting frame 9 is matched with the limiting plate 6, and the limiting frame 9 is provided with an inverted T-shaped through hole 91 that cooperates with the limiting plate 6 and the limiting rod 8.

[0045] The number of protrusions 221 is two.

[0046] The folding limiting plate 12 is connected to the box body 1 on both sides by connecting plates. There is a gap between the folding limiting plate 12 and the inner wall of the box body 1. The movable folding piece 22 is disposed in the gap and can slide up and down in the gap.

[0047] The limiting piece 6 is provided with a rotating shaft 61, which is rotatably connected to the door panel 2.

[0048] The limiting frame 9 is a spherical support, and the inverted T-shaped through hole 91 on it cooperates with the limiting piece 6 and the limiting rod 8.

[0049] When the limiting piece 6 rotates, the limiting rod 8 at the end of the limiting piece 6 and on it can pass through the inverted T-shaped through hole 91. During the rotation of the limiting piece 6, the limiting rod 8 moves along the spherical surface of the limiting frame 9 through the inverted T-shaped through hole 91.

[0050] MS21075L08 floating nuts are installed on all four sides of the box 1 for installing this application on the ceiling of the aircraft lavatory.

[0051] The electromagnetic lock 3 is provided with a support slider 10, and the door panel 2 is provided with a working through hole that cooperates with the support slider 10; the staff can open the door by inserting the unlocking key 50 into the working through hole.

[0052] The unlocking key is rod-shaped and is inserted through the working hole to push the support slider 10 to slide and unlock the electromagnetic latch.

[0053] The folding assembly includes the auxiliary folding mounting hole 11, the folding limiting plate 12, the auxiliary folding 21, and the movable folding;

[0054] The auxiliary hinge mounting holes 11 are two in number. The auxiliary hinge 21 has a hook structure. The hook structure is used to enter the auxiliary hinge mounting holes 11 when the door panel 2 is closed, so as to restrict the door panel 2 and achieve the closing of the door panel 2.

[0055] The movable folding piece 22 and the folding piece are rotatably connected by a pin to form a folding structure. A torsion spring 23 is provided on the pin. The movable folding piece 22 passes through the gap between the folding limiting plate 12 and the box body 1. The movable folding piece 22 can slide up and down in the gap. The end of the movable folding piece 22 is provided with a protrusion 221 to prevent the movable folding piece 22 from sliding out of the gap completely.

[0056] In actual use, when the electromagnetic lock 3 is unlocked, the door panel 2 will rotate and open under its own gravity and fall downwards. At this time, only the movable hinge 22 will slide down with the door panel 2, but after sliding down a certain distance, it will be restricted by the protrusion 221. The protrusion 221 will jam to prevent the movable hinge 22 from falling further. At this time, the distance between the door panel 2 and the box 1 increases. One end of the torsion spring 23 is in close contact with the door panel 2, and the other end is in close contact with the side plate of the box 1. The torsion spring 23 is in a compressed state. After the electromagnetic lock 3 opens the door, the compressed torsion spring 23 will exert force to push the door panel 2 and the side wall of the box 1 to rotate relative to each other. The pushing of the torsion spring 23 can make the door panel 2 open wider, achieving the effect of opening the door panel 2 180°.

[0057] In actual use and installation, this application is installed on the ceiling of the aircraft lavatory, with door panel 2 facing downwards.

[0058] To ensure that door panel 2 is flush with the ceiling of the washroom, it will fall downwards due to gravity after opening. The movable hinge 22 slides downwards within the hinge limiting plate 12, allowing door panel 2 a certain distance to fall. The end of the movable hinge 22 is provided with a protrusion 221, which will lock onto the hinge limiting plate 12 after falling a certain distance, preventing door panel 2 from falling further. This creates a distance between door panel 2 and the side wall of the box 1, ensuring that the door panel opens at an angle of 180°±10° without interference. This requires the design of the hinge assembly. During the opening process, door panel 2 needs to move downwards as a whole. After moving to the outside of the ceiling without interference, the torsion spring 23 opens door panel 2 to 180°. The hinge assembly uses a movable door hinge in conjunction with a semi-closed door hinge. When the door panel is opened to about 90°, the movable hinge on door panel 2 slides, causing the door panel to move downwards. At the same time, the torsion spring 23 exerts force, opening the door panel to 180°.

[0059] The limiting piece 6 is rotatably mounted on the door panel 2. One side of the limiting piece 6 is parallel to the outer surface of the door panel 2. When the worker pushes the limiting piece 6 to rotate, the limiting piece 6 rotates, and the limiting rod 8 at the end also rotates. The limiting rod 8 passes through the horizontal hole of the inverted T-shaped through hole 91 of the limiting frame 9 and moves along the vertical hole of the inverted T-shaped through hole 91.

[0060] One end of spring 7 is connected to door panel 2, and the other end is connected to the end of limiting plate 6. Limiting plate 6 and door panel 2 are connected by rotating shaft 61. The point of rotational connection and the point where spring 7 connects to limiting plate 6 are not the same point. Therefore, the deformation of spring 7 changes when limiting plate 6 rotates. Figure 9 As shown, there are three states of the limiting plate 6. State A is the state where the limiting plate 6 is closed to the door panel 2. State B is the state where the deformation of the spring 7 is at its maximum. At this time, no matter which direction the limiting plate 6 rotates, the spring 7 will provide power. State C is the state where the limiting plate 6 is perpendicular to the door panel 2. At this time, when the electromagnetic lock 3 is opened and the limiting rod 8 is stuck on the limiting frame 9, the door panel 2 opens a gap to facilitate inspection by the testing personnel.

[0061] When the limiting plate 6 rotates through the rotating shaft 61, the spring 7 is first stretched. As it rotates, it reaches its maximum stretch. During this stage, as the rotation angle of the limiting plate 6 increases, the spring 7 is continuously stretched to the maximum stretch distance. After reaching the maximum stretch, the limiting plate 6 continues to rotate. At this time, the spring 7 begins to shorten from the maximum stretch distance. The tension of the spring 7 pulls the limiting plate 6 to continue moving until it is blocked by the limiting frame 9. At this time, the limiting plate 6 and the door panel 2 are perpendicular. The limiting rod 8 and the limiting frame 9 cooperate. After the door panel 2 is opened, the limiting rod 8 is blocked by the limiting frame 9, so that the door panel 2 can only be opened through a crack and cannot be fully opened. This facilitates the inspection by maintenance personnel and prevents the placement of oxygen masks from being affected by the door panel 2 being fully opened.

[0062] After the inspection is completed, the maintenance personnel push the door panel 2, and the electromagnetic lock 3 is locked again. The maintenance personnel move the limit plate 6, and the limit plate 6 flips from a state perpendicular to the door panel 2. When the limit plate 6 flips, the extension length of the spring 7 first increases, and after reaching the maximum extension distance, it continues to flip and begins to shorten. At this time, the tension of the spring 7 will pull the limit plate 6 to continue to reset until the limit plate 6 is parallel to the door panel 2, and the limit plate 6 is blocked by the door panel 2.

[0063] The limiting frame 9 is a spherical support, and the inverted T-shaped through hole 91 provided on it cooperates with the limiting piece 6 and the limiting rod 8. The horizontal hole of the T is used for the limiting rod 8 to pass through. After passing through, the limiting piece 6 moves along the vertical hole of the T, causing the limiting rod 8 to move along the spherical surface of the limiting frame 9.

[0064] The spring 7 is model ESCHC-D3-L20. The spring has an initial length of 20mm, an initial torque of 0.66N, and a spring constant of 0.19N / mm.

Claims

1. An oxygen cylinder storage box for use in an aircraft lavatory, characterized in that, include: Box body (1), door panel (2), electromagnetic lock (3), hinge assembly, oxygen cylinder bracket (4), stainless steel clamp (5) and limiting mechanism; The box (1) is equipped with an oxygen cylinder slot, an oxygen mask slot and a locking slot through a partition. The box body (1) is fitted with a door panel (2) via a hinge assembly; The folding assembly includes an auxiliary folding mounting hole (11), a folding limiting plate (12), an auxiliary fold (21), and a movable fold; The number of auxiliary hinge mounting holes (11) and hinge limiting plates (12) are both two or more, and the auxiliary hinge mounting holes (11) and hinge limiting plates (12) are both installed on the box body (1); the auxiliary hinge (21) is fixedly installed on the door panel (2), and its position and number are corresponding to the auxiliary hinge mounting holes (11); The movable folding mechanism includes a movable folding piece (22), a folding piece, a pin, and a torsion spring (23). The movable folding piece (22) and the folding piece are rotatably connected by the pin, and the pin is provided with a torsion spring (23). The movable folding piece (22) is provided on the folding limiting plate (12), and the folding piece is fixedly provided on the door panel (2). One end of the torsion spring (23) is in close contact with the door panel (2), and the other end is in close contact with the side wall of the box body (1). The end of the movable folding piece (22) is provided with a protrusion (221); The oxygen cylinder support (4) is provided with stainless steel clamps (5) for fixing the oxygen cylinder, and the number of stainless steel clamps (5) is two or more. The limiting mechanism includes a limiting plate (6), a spring (7), a limiting rod (8), and a limiting frame (9). The limiting piece (6) is rotatably mounted on the door panel (2), and the end of the limiting piece (6) is provided with a limiting rod (8); one end of the spring (7) is connected to the door panel (2), and the other end is connected to the limiting piece (6); the limiting frame (9) is mounted on the box body (1), the position of the limiting frame (9) is matched with the limiting piece (6), and the limiting frame (9) is provided with an inverted T-shaped through hole (91) that matches the limiting piece (6) and the limiting rod (8).

2. The oxygen cylinder storage box for an aircraft lavatory according to claim 1, characterized in that: The number of protrusions (221) is two.

3. The oxygen cylinder storage box for an aircraft lavatory according to claim 1, characterized in that: The folding limiting plate (12) is connected to the box body (1) on both sides by connecting plates. There is a gap between the folding limiting plate (12) and the inner wall of the box body (1). The movable folding piece (22) is set in the gap and can slide up and down in the gap.

4. The oxygen cylinder storage box for an aircraft lavatory according to claim 1, characterized in that: The limiting piece (6) is provided with a rotating shaft (61), which is rotatably connected to the door panel (2).

5. The oxygen cylinder storage box for an aircraft lavatory according to claim 1, characterized in that: The limiting frame (9) is a spherical bracket, and the inverted T-shaped through hole (91) provided on it cooperates with the limiting piece (6) and the limiting rod (8).

6. The oxygen cylinder storage box for an aircraft lavatory according to claim 5, characterized in that: When the limiting piece (6) rotates, the limiting rod (8) at the end of the limiting piece (6) and on it can pass through the inverted T-shaped through hole. During the rotation of the limiting piece (6), the limiting rod (8) moves along the spherical surface of the limiting frame (9) through the inverted T-shaped through hole (91).

7. The oxygen cylinder storage box for an aircraft lavatory according to claim 1, characterized in that: MS21075L08 floating nuts are installed on all four sides of the box (1).

8. The oxygen cylinder storage box for an aircraft lavatory according to claim 1, characterized in that: The electromagnetic lock (3) is provided with a support slider (10), and the door panel (2) is provided with a working through hole that cooperates with the support slider (10).

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