Emergency oxygen module mask box

Abstract

The utility model provides an emergency oxygen module mask box which comprises a shell (1), a door plate (2), an oxygen bottle (3), an oxygen bottle excitation device (4), an electromagnetic plunger latch (5), a power supply cable (), a hoop (7), a starting pull rope (8), an oxygen catheter (9), a nut (10), a sliding plug pin (11), an unlocking working hole (12), a rotating shaft (15), a torsion spring (16), an oxygen mask (17) and an unlocking tool (18). The oxygen bottle excitation device (4) is used for exciting the oxygen bottle (3) to supply oxygen to the oxygen mask; the oxygen bottle excitation device (4) is provided with a starting pull rope; according to the utility model, the oxygen source is designed to be gaseous oxygen, so that heat, high temperature and open fire cannot be generated during oxygen production, and the safety of aircraft passengers is improved; a structure enables the door plate to be opened and turned over by 180 degrees, space on an airplane is saved, and passengers are prevented from being collided; the structure enables the door plate to be opened at a certain angle to facilitate on-board inspection.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency oxygen supply for passengers on civil aircraft, and provides a novel emergency oxygen module mask box connected with an aircraft truss. Background Art

[0002] Most current civilian aircraft use chemical oxygen generators for oxygen supply. When the chemical oxygen generator is activated, a chemical reaction occurs inside the oxygen generator to produce oxygen, which is then supplied to the passenger's oxygen mask through an oxygen hose. Passengers then receive oxygen through the oxygen mask.

[0003] During the above process, since the chemical oxygen generator generates a large amount of heat during the reaction, the mask box has local high temperature, and even open flames in dangerous situations, which makes the safety poor. Utility Model Content

[0004] The purpose of the utility model is to provide a mask box mechanism that does not generate high-temperature open flames and has high safety, so as to meet the requirements of emergency life protection for civil aviation passengers and provide emergency oxygen for passengers.

[0005] The technical solution of the utility model is:

[0006] Provided is an emergency oxygen module mask box connected to an aircraft truss, comprising a housing 1, a door panel 2, an oxygen cylinder 3, an oxygen cylinder activating device 4, an electromagnetic latch 5, a power supply cable 6, a clamp 7, a starter pull rope 8, an oxygen supply tube 9, a nut 10, a sliding latch 11, an unlocking working hole 12, a rotating shaft 15, a torsion spring 16, an oxygen mask 17, and an unlocking tool 18; the oxygen cylinder activating device 4 is used to activate the oxygen cylinder 3 to supply oxygen to the oxygen mask; the oxygen cylinder activating device 4 is provided with a starter pull rope;

[0007] The housing 1 is formed with a mask receiving cavity and an electromagnetic latch mounting cavity on the front side, and an oxygen cylinder receiving cavity on the back side, wherein the oxygen cylinder and the oxygen cylinder excitation device are fixedly mounted in the oxygen cylinder receiving cavity;

[0008] The electromagnetic latch is arranged in the electromagnetic latch installation cavity, and the electromagnetic latch includes a relay switch and a latch, and the latch is controlled by the relay switch to work in an unlocking position and an unlocking position; the door panel is provided with a lock slot, and the lock slot is adapted to the latch;

[0009] The rotating shaft is mounted on the lower edge of the door panel 2, and the sliding latch 11 is rotatably mounted on the rotating shaft. A limiting sleeve is provided at the lower edge of the front face of the housing. The sliding latch 11 is slidably inserted into the limiting sleeve. The end of the latch has a hook to prevent the latch from sliding out of the limiting sleeve. The sliding of the sliding latch can cause the rotating shaft to move parallel to the lower edge of the front face of the housing, thereby further expanding the opening angle of the door panel.

[0010] The torsion spring 16 is mounted on the rotating shaft, and the two ends of the torsion spring are respectively against the door panel and the housing;

[0011] A through hole is formed on the housing extending from the oxygen cylinder accommodating chamber to the mask accommodating chamber, and the oxygen supply pipe is connected to the oxygen mask and the oxygen cylinder through the through hole;

[0012] The door panel is provided with an unlocking working hole 12 , which enables the unlocking tool 18 to pass through the unlocking working hole 12 and push the latch to overcome the torque of the relay switch and rotate to the unlocking position.

[0013] Furthermore, it also includes a small-angle lock catch 13 and a tension spring 14. The door panel has an opening, and the small-angle lock catch 13 of the lock latch is rotatably installed in the opening. The front of the small-angle lock catch 13 forms a button, and the back of the small-angle lock catch 13 forms a lock hook. A tension spring is arranged between the small-angle lock catch 13 and the door panel, and a lock port is arranged on the shell. The lock hook cooperates with the lock port to enable the door panel to fit and lock the front of the shell; manually pressing the button can enable the small-angle lock catch 13 to overcome the tension spring and rotate to unlock the lock hook; there is a gap between the lock slot and the lock latch, which can ensure that the door panel is not locked by the lock latch within a small angle.

[0014] Furthermore, the small angle range of the small angle lock 13 is within 35°.

[0015] Furthermore, the translation distance of the rotation axis relative to the lower edge of the shell can ensure that the door panel can be flipped 180 degrees.

[0016] Furthermore, the torque of the relay switch is 130N.

[0017] Furthermore, the shell is provided with nuts, which can be connected to and removed from the aircraft truss.

[0018] Furthermore, the activation rope passes through the shell and is fixedly connected to the oxygen mask.

[0019] The working process is:

[0020] The shell 1 can store passenger masks; the mask box shell can firmly fix the electromagnetic latch and oxygen cylinder assembly 5; during the ground inspection process, the shell 1 has a structure that can cooperate with the small-angle lock to achieve opening of the door panel at a small angle, and the door panel opening angle can reach a large angle, even 180 degrees, which is convenient for functional inspection; during the flight, the electromagnetic latch is energized and the lock is released, the door panel opens, and the mask is jettisoned. If the passenger pulls the mask (the pull rope is pulled manually or automatically), the oxygen cylinder excitation device is activated and emergency oxygen supply begins.

[0021] The advantages of the utility model are as follows: the oxygen source is designed to be gaseous oxygen, and oxygen production will not generate heat, high temperature and open flame, thereby improving the safety of aircraft occupants; a structure is provided to enable the door panel to be opened and flipped 180 degrees, thereby saving space on the aircraft and preventing occupants from bumping into each other; and a structure is provided to enable the door panel to be opened at a certain angle for easy inspection on board. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the mask box;

[0023] Figure 2 This is an exterior view of the door panel;

[0024] Figure 3 This is a schematic diagram of the internal structure of the cover box after the door panel is opened;

[0025] Figure 4 It is a schematic diagram of the internal structure of the electromagnetic latch;

[0026] Figure 5 is a schematic diagram of a manual opening tool opening an electromagnetic latch;

[0027] Figure 6 It is a schematic diagram of the relative position between the latch and the housing before the door panel is opened;

[0028] Figure 7 It is a schematic diagram of the relative position between the latch and the housing when the door panel is opened;

[0029] Figure 8 This is a schematic diagram of the brake position during the functional check;

[0030] Figure 9 This is an enlarged schematic diagram of the brake position during the functional check;

[0031] Among them: 1-shell, 2-door panel, 3-oxygen cylinder, 4-excitation device, 5-electromagnetic latch, 6-power supply cable, 7-clamp, 8-start pull rope, 9-oxygen supply tube, 10-nut, 11-pin, 12-unlocking working hole, 13-small angle lock, 14-tension spring, 15-rotating shaft, 16-torsion spring, 17-oxygen mask, 18-unlocking tool. DETAILED DESCRIPTION

[0032] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples can be described and these examples should not be construed as limited to the examples set forth herein. Instead, these examples are described so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art.

[0033] Provided is an emergency oxygen module mask box housing (1) connected to an aircraft truss, comprising a housing 1, a door panel 2, an oxygen cylinder 3, an oxygen cylinder activating device 4, an electromagnetic latch 5, a power supply cable 6, a clamp 7, a starter pull rope 8, an oxygen supply pipe 9, a nut 10, a sliding latch 11, an unlocking working hole 12, a rotating shaft 15, a torsion spring 16, an oxygen mask 17, and an unlocking tool 18; the oxygen cylinder activating device 4 is used to activate the oxygen cylinder 3 to supply oxygen to the oxygen mask; the oxygen cylinder activating device 4 is provided with a starter pull rope;

[0034] The housing 1 is formed with a mask receiving cavity and an electromagnetic latch mounting cavity on the front side, and an oxygen cylinder receiving cavity on the back side, wherein the oxygen cylinder and the oxygen cylinder excitation device are fixedly mounted in the oxygen cylinder receiving cavity;

[0035] The electromagnetic latch is arranged in the electromagnetic latch installation cavity, and the electromagnetic latch includes a relay switch and a latch, and the latch is controlled by the relay switch to work in an unlocking position and an unlocking position; the door panel is provided with a lock slot, and the lock slot is adapted to the latch;

[0036] The rotating shaft is mounted on the lower edge of the door panel 2, and the sliding latch 11 is rotatably mounted on the rotating shaft. A limiting sleeve is provided at the lower edge of the front face of the housing. The sliding latch 11 is slidably inserted into the limiting sleeve. The end of the latch has a hook to prevent the latch from sliding out of the limiting sleeve. The sliding of the sliding latch can cause the rotating shaft to move parallel to the lower edge of the front face of the housing, thereby further expanding the opening angle of the door panel.

[0037] The torsion spring 16 is mounted on the rotating shaft, and the two ends of the torsion spring are respectively against the door panel and the housing;

[0038] A through hole is formed on the housing extending from the oxygen cylinder accommodating chamber to the mask accommodating chamber, and the oxygen supply pipe is connected to the oxygen mask and the oxygen cylinder through the through hole;

[0039] The door panel is provided with an unlocking working hole 12 , which enables the unlocking tool 18 to pass through the unlocking working hole 12 and push the latch to overcome the torque of the relay switch and rotate to the unlocking position.

[0040] It also includes a small-angle lock catch 13 and a tension spring 14. The door panel has an opening, and the small-angle lock catch 13 of the lock latch is rotatably installed in the opening. The front of the small-angle lock catch 13 forms a button, and the back of the small-angle lock catch 13 forms a lock hook. A tension spring is arranged between the small-angle lock catch 13 and the door panel, and a lock port is arranged on the shell. The lock hook cooperates with the lock port to enable the door panel to fit and lock the front of the shell; manually pressing the button can enable the small-angle lock catch 13 to overcome the tension spring and rotate to unlock the lock hook; there is a gap between the lock slot and the lock latch, which can ensure that the door panel is not locked by the lock latch within a small angle.

[0041] The small angle range of the small angle lock buckle 13 is within 35°.

[0042] The translation distance of the rotation axis relative to the lower edge of the shell can ensure that the door panel can be flipped 180 degrees.

[0043] The torque of the relay switch is 130N.

[0044] The shell is provided with nuts, which can be connected to and removed from the aircraft truss.

[0045] The activation pull rope passes through the shell and is fixedly connected to the oxygen mask.

[0046] The description of various advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples disclosed. Many modifications and variations will be apparent to those skilled in the art. In addition, different advantageous examples may describe different advantages compared to other advantageous examples. The selected example or examples are chosen and described to best illustrate the principles of the examples, their practical application, and to enable those skilled in the art to understand the disclosure with various examples with various modifications suitable for the particular use contemplated.

Claims

1. An emergency oxygen module mask box, characterized by: The invention comprises a housing (1), a door panel (2), an oxygen cylinder (3), an oxygen cylinder activating device (4), an electromagnetic latch (5), a power supply cable (), a clamp (7), a starter pull rope (8), an oxygen supply pipe (9), a nut (10), a sliding latch (11), an unlocking working hole (12), a rotating shaft (15), a torsion spring (16), an oxygen mask (17) and an unlocking tool (18); the oxygen cylinder activating device (4) is used to activate the oxygen cylinder (3) to supply oxygen to the oxygen mask; the oxygen cylinder activating device (4) is provided with a starter pull rope; The housing (1) is formed with a mask accommodating cavity and an electromagnetic latch mounting cavity on the front side, and an oxygen cylinder accommodating cavity on the back side, wherein the oxygen cylinder and the oxygen cylinder excitation device are both fixedly mounted in the oxygen cylinder accommodating cavity; The electromagnetic latch is arranged in the electromagnetic latch installation cavity, and the electromagnetic latch includes a relay switch and a latch, and the latch is controlled by the relay switch to work in an unlocking position and an unlocking position; the door panel is provided with a lock slot, and the lock slot is adapted to the latch; The rotating shaft is installed at the lower edge of the door panel (2), the sliding latch (11) is rotatably installed on the rotating shaft, and a limiting sleeve is provided at the lower edge of the front face of the shell, the sliding latch (11) is slidably inserted in the limiting sleeve, the end of the latch has a hook, which can prevent the latch from sliding out of the limiting sleeve, and the sliding of the sliding latch can make the rotating shaft move parallel to the lower edge of the front face of the shell, thereby further expanding the opening angle of the door panel; The torsion spring (16) is sleeved on the rotating shaft, and the two ends of the torsion spring respectively abut against the door panel and the housing; A through hole is formed on the housing extending from the oxygen cylinder accommodating chamber to the mask accommodating chamber, and the oxygen supply pipe is connected to the oxygen mask and the oxygen cylinder through the through hole; An unlocking working hole (12) is provided on the door panel, enabling the unlocking tool (18) to pass through the unlocking working hole (12) to push the lock latch to overcome the torque of the relay switch and rotate to an unlocking position.

2. The emergency oxygen module mask box according to claim 1, characterized in that: The door panel also includes a small-angle lock catch (13) and a tension spring (14). The door panel has an opening, and the small-angle lock catch (13) of the lock latch is rotatably installed in the opening. The front of the small-angle lock catch (13) forms a button, and the back of the small-angle lock catch (13) forms a lock hook. A tension spring is provided between the small-angle lock catch (13) and the door panel, and a lock port is provided on the shell. The lock hook cooperates with the lock port to enable the door panel to fit and lock the front of the shell; manually pressing the button can enable the small-angle lock catch (13) to overcome the tension spring and rotate to unlock the lock hook; there is a gap between the lock slot and the lock latch, which can ensure that the door panel is not locked by the lock latch within a small angle.

3. The emergency oxygen module mask box according to claim 1, characterized in that: The small angle range of the small angle lock is within 35°.

4. The emergency oxygen module mask box according to claim 1, characterized in that: The translation distance of the rotation axis relative to the lower edge of the shell can ensure that the door panel can be flipped 180 degrees.

5. The emergency oxygen module mask box according to claim 1, characterized in that: The torque of the relay switch is 130N.

6. The emergency oxygen module mask box according to claim 1, characterized in that: The shell is provided with nuts, which can be connected to and removed from the aircraft truss.

7. The emergency oxygen module mask box according to claim 1, characterized in that: The activation pull rope passes through the shell and is fixedly connected to the oxygen mask.

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