Sealing structure between upturning type airplane cabin door and cabin door frame

Abstract

The utility model belongs to the technical field of sealing design between an upturning type airplane cabin door and a cabin door frame, and particularly relates to a sealing structure between the upturning type airplane cabin door and the cabin door frame, which comprises a flow stopping sealing supporting strip, a sealing strip, a sealing strip, a sealing strip and a sealing strip, the outer cover obliquely extends outwards to the edge of the cabin door outer skin; the sealing belt is connected to the edge of the cabin door outer skin in the circumferential direction, and the part, located at the top of the cabin door, of the sealing belt is connected to the flow stopping sealing supporting strip; when the cabin door is closed in the cabin door frame, the sealing belt is extruded on the cabin door frame, and sealing between the cabin door and the cabin door frame is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of the sealing design between an upward-opening aircraft cabin door and a cabin door frame, and specifically relates to a sealing structure between an upward-opening aircraft cabin door and a cabin door frame. Background Art

[0002] Currently, to ensure the airtightness between an upward-opening aircraft cabin door and a cabin door frame, a sealing strip is mostly arranged circumferentially along the inner side of the cabin door. After the cabin door is closed, the sealing strip will be squeezed onto the cabin door frame to achieve the sealing between the cabin door and the cabin door frame.

[0003] Between the top of the upward-opening aircraft cabin door and the cabin door frame, there are mostly two independent hinges or hinges for articulation. After the cabin door is closed, due to the existence of the hinges or hinges between the top of the cabin door and the cabin door frame, there is a large gap. Rainwater or condensate will enter between the top of the cabin door and the cabin door frame from the gap. Under the action of gravity, the sealing strip will be eroded and then penetrate into the aircraft cabin. In addition, the hinges or hinges are connected to the top of the cabin door and the cabin door frame through fasteners, generating a large concentrated load, causing damage to the structure and being unable to effectively restrain the deformation of the top of the cabin door, making it difficult to ensure the sealing between the top of the cabin door and the cabin door frame.

[0004] In view of the existence of the above technical defects, this application is proposed. Utility Model Content

[0005] The purpose of this application is to provide a sealing structure between an upward-opening aircraft cabin door and a cabin door frame to overcome or mitigate at least one aspect of the known technical defects.

[0006] The technical solution of this application is as follows:

[0007] A sealing structure between an upward-opening aircraft cabin door and a cabin door frame, comprising:

[0008] A flow-stop sealing support strip, connected to the top edge strip of the cabin door, with both ends bent downward from both ends of the top edge strip of the cabin door, connected to the side edge strips of the cabin door, and extending obliquely outward to the edge of the outer skin of the cabin door;

[0009] A sealing strip, connected circumferentially to the edge of the outer skin of the cabin door, and the part at the top of the cabin door is connected to the flow-stop sealing support strip;

[0010] When the cabin door is closed in the cabin door frame, the sealing strip is squeezed onto the cabin door frame to achieve the sealing between the cabin door and the cabin door frame.

[0011] According to at least one embodiment of this application, in the above-mentioned sealing structure between an upward-opening aircraft cabin door and a cabin door frame, the cabin door frame has an annular sealing flange;

[0012] When the cabin door is closed in the cabin door frame, the sealing strip is squeezed onto the annular sealing flange to achieve the sealing between the cabin door and the cabin door frame.

[0013] According to at least one embodiment of the present application, in the sealing structure between the upward-opening aircraft cabin door and the cabin door frame described above, the top edge strip of the cabin door inclines inwards.

[0014] According to at least one embodiment of the present application, in the sealing structure between the upward-opening aircraft cabin door and the cabin door frame described above, it further includes:

[0015] The sealing groove is connected to the edge of the outer skin of the cabin door along the circumference, and the part at the top of the cabin door is connected to the flow-stop sealing support strip;

[0016] The outer side of the sealing strip has a strip-shaped convex edge, and the strip-shaped convex edge is stuck in the sealing groove.

[0017] According to at least one embodiment of the present application, in the sealing structure between the upward-opening aircraft cabin door and the cabin door frame described above, it further includes:

[0018] The cabin door angular connecting piece is stuck at the top of the cabin door, one side wall is connected to the outer skin at the top of the cabin door, the other side wall is connected to the top edge strip of the cabin door, and a plurality of lugs are arranged on the outer side of the corner;

[0019] The cabin door frame angular connecting piece is stuck at the top of the cabin door frame, one side wall is connected to the outer skin at the top of the cabin door frame, the other side wall is connected to the top edge strip of the cabin door frame, and a plurality of lugs are arranged on the outer side of the corner;

[0020] The through bar is arranged through the through holes of each lug on the cabin door angular connecting piece and the cabin door frame angular connecting piece; each lug on the cabin door angular connecting piece and each lug on the cabin door frame angular connecting piece are arranged in a crosswise manner.

[0021] According to at least one embodiment of the present application, in the sealing structure between the upward-opening aircraft cabin door and the cabin door frame described above, the length of the cabin door angular connecting piece is equivalent to the length of the top of the cabin door;

[0022] The length of the cabin door frame angular connecting piece is equivalent to the length of the top of the cabin door frame.

[0023] The present application has at least the following beneficial technical effects:

[0024] A sealing structure between an upward-opening aircraft cabin door and a cabin door frame is provided. After the cabin door is closed, rainwater or condensate entering through the gap between the top of the cabin door and the cabin door frame will flow along the flow-stop sealing support strip towards both ends, and then flow into the triangular areas formed at both ends of the flow-stop sealing support strip and the edge of the outer skin of the cabin door, and be discharged through the gap between the top of the cabin door 2 and the cabin door frame 3. The top of the cabin door 2 does not come into contact with the sealing strip, and will not erode the sealing strip (4) and penetrate into the aircraft cabin. Description of the Drawings

[0025] Figure 1It is a schematic external view of the sealing structure between the upward-opening aircraft cabin door and the cabin door frame provided by the embodiment of the present application;

[0026] Figure 2 It is a schematic view of part of the structure in the sealing structure between the upward-opening aircraft cabin door and the cabin door frame provided by the embodiment of the present application;

[0027] Figure 3 It is a schematic view of the sealing structure between the upward-opening aircraft cabin door and the cabin door frame when the cabin door is closed provided by the embodiment of the present application;

[0028] Figure 4 It is a schematic view of the sealing structure between the upward-opening aircraft cabin door and the cabin door frame when the cabin door is opened provided by the embodiment of the present application;

[0029] Wherein:

[0030] 1 - Stop-flow sealing support strip; 2 - Cabin door; 3 - Cabin door frame; 4 - Sealing strip; 5 - Sealing groove; 6 - Cabin door angular connecting piece; 7 - Cabin door frame angular connecting piece; 8 - Through strip.

[0031] For better illustration of this embodiment, some components in the drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product. In addition, the drawings are only for illustrative purposes and should not be construed as a limitation to the present application. Detailed implementation manners

[0032] To make the technical solutions of the present application and their advantages clearer, the technical solutions of the present application will be further described clearly and completely below in conjunction with the drawings. It can be understood that the specific embodiments described herein are only part of the embodiments of the present application, which are only used to explain the present application and are not a limitation to the present application. It should be noted that for the convenience of description, only the parts related to the present application are shown in the drawings, and other related parts can refer to the general design.

[0033] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present application should be the ordinary meanings understood by those of ordinary skill in the art to which the present application belongs. The terms indicating directions used in the description of the present application are only used to represent relative directions or positional relationships. When the absolute position of the object being described changes, its relative positional relationship may also change accordingly. The "including" used in the description of the present application means that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects.

[0034] In addition, it should be noted that, unless otherwise clearly specified and limited, terms such as "installation" and "connection" used in the description of this application should be understood in a broad sense. For example, connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand their specific meanings in this application according to specific circumstances.

[0035] An up - flipping aircraft cabin door and cabin door frame sealing structure, as Figures 1-4 shown, includes:

[0036] A flow - stopping and sealing support strip 1, connected to the top edge strip of the cabin door 2, can be integrally formed on the top edge strip of the cabin door 2. Its two ends are bent downward from both ends of the top edge strip of the cabin door 2, connected to the side edge strips of the cabin door 2, and extend obliquely outward to the edge of the outer skin of the cabin door 2, forming a triangular area A;

[0037] A sealing strip 4, connected along the circumference to the edge of the outer skin of the cabin door 2, and the part at the top of the cabin door 2 is connected to the flow - stopping and sealing support strip 1;

[0038] When the cabin door 2 is closed in the cabin door frame 3, the sealing strip 4 is pressed against the cabin door frame 3 to achieve the sealing between the cabin door 2 and the cabin door frame 3.

[0039] For the up - flipping aircraft cabin door and cabin door frame sealing structure disclosed in the above - mentioned embodiment, after the cabin door 2 is closed, rainwater or condensate entering from the gap between the top of the cabin door and the cabin door frame will flow along the flow - stopping and sealing support strip 1 towards both ends, and then flow into the triangular area A formed at the edges of both ends of the flow - stopping and sealing support strip 1 and the outer skin of the cabin door 2, and is discharged from the gap between the top of the cabin door 2 and the cabin door frame 3. It does not come into contact with the sealing strip 4 at the top of the cabin door 2 and will not erode the sealing strip 4 and penetrate into the aircraft cabin.

[0040] In some alternative embodiments, in the above - mentioned up - flipping aircraft cabin door and cabin door frame sealing structure, the cabin door frame 3 has an annular sealing flange;

[0041] When the cabin door 2 is closed in the cabin door frame 3, the sealing strip 4 is pressed against the annular sealing flange to achieve the sealing between the cabin door 2 and the cabin door frame 3.

[0042] In some alternative embodiments, in the above - mentioned up - flipping aircraft cabin door and cabin door frame sealing structure, the top edge strip of the cabin door 2 inclines inward to reserve sufficient space for the setting of the relevant structure of the flow - stopping and sealing support strip 1.

[0043] In some alternative embodiments, in the above - mentioned up - flipping aircraft cabin door and cabin door frame sealing structure, it further includes:

[0044] The sealing groove 5 is circumferentially connected to the edge of the outer skin of the cabin door 2, and the part at the top of the cabin door 2 is connected to the flow-stop sealing support bar 1;

[0045] The outer side of the sealing strip 4 has a strip-shaped convex edge, and the strip-shaped convex edge is stuck in the sealing groove 5.

[0046] In some alternative embodiments, in the above sealing structure between the upward-opening aircraft cabin door and the cabin door frame, it further includes:

[0047] The cabin door angular connector 6 is stuck at the top of the cabin door 2, one side wall is connected to the outer skin at the top of the cabin door 2, the other side wall is connected to the top flange of the cabin door 2, and a plurality of lugs are arranged on the outer side of the corner;

[0048] The cabin door frame angular connector 7 is stuck at the top of the cabin door frame 4, one side wall is connected to the outer skin at the top of the cabin door frame 4, the other side wall is connected to the top flange of the cabin door frame 4, and a plurality of lugs are arranged on the outer side of the corner;

[0049] The through bar 5 is arranged through the through holes of the lugs on the cabin door angular connector 6 and the cabin door frame angular connector 7; the lugs on the cabin door angular connector 6 and the lugs on the cabin door frame angular connector 7 are arranged in a cross pattern.

[0050] In the sealing structure between the upward-opening aircraft cabin door and the cabin door frame disclosed in the above embodiments, it is designed that the cabin door angular connector 6 is stuck at the top of the cabin door 2, the cabin door frame angular connector 7 is stuck at the top of the cabin door frame 3, and the through bar 8 is used to connect the lugs on the cabin door angular connector 6 and the cabin door frame angular connector 7 to realize the hinge connection of the top of the cabin door 2 and the cabin door frame 4.

[0051] In the sealing structure between the upward-opening aircraft cabin door and the cabin door frame disclosed in the above embodiments, it is designed that the side walls on both sides of the cabin door angular connector 6 are respectively connected to the outer skin at the top of the cabin door 2 and the top flange, and the side walls on both sides of the cabin door frame angular connector 7 are respectively connected to the outer skin at the top of the cabin door frame 3 and the top flange. The connection with the top of the cabin door 2 and the cabin door frame 3 is firm and has a large contact area, which can greatly improve the situation of concentrated load at two points and avoid the pulling-off of the fasteners for connection, resulting in structural damage.

[0052] In order to avoid interference between the cabin door angular connector 6 and the cabin door frame angular connector 7 when the cabin door 2 is opened and closed, the included angle between the side walls on both sides of the cabin door angular connector 6 or the cabin door frame angular connector 7 can be designed. For example, the included angle between the side walls of the cabin door angular connector 6 can be designed to be less than 90°, and the included angle between the side walls of the cabin door frame angular connector 7 can be 90°.

[0053] In some alternative embodiments, in the above sealing structure between the upward-opening aircraft cabin door and the cabin door frame, the length of the cabin door angular connector 6 is equivalent to the length of the top of the cabin door 2;

[0054] The length of the angular connecting piece 7 of the cabin door frame is equivalent to the length of the top of the cabin door frame 4, so as to increase the contact area between the cabin door 2 and the top of the cabin door frame 3, further improve the situation of concentrated load at two points, and can effectively restrain the deformation of the top of the cabin door 2 to avoid air leakage.

[0055] The various embodiments in the specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts between the various embodiments, reference can be made to each other. Without conflict, the embodiments and technical features in the present application can be combined with each other to obtain new embodiments.

[0056] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings. Those skilled in the art should understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A sealing structure between an upward-opening aircraft cabin door and a cabin door frame, characterized in that Comprising: A flow-stop sealing support bar (1), connected to the top flange of the cabin door (2), with both ends bent downward from both ends of the top flange of the cabin door (2), connected to the side flanges of the cabin door (2), and extending outward and obliquely to the edge of the outer skin of the cabin door (2); A sealing strip (4), connected to the edge of the outer skin of the cabin door (2) along the circumference, and the part at the top of the cabin door (2) is connected to the flow-stop sealing support bar (1); When the cabin door (2) is closed in the cabin door frame (3), the sealing strip (4) is pressed against the cabin door frame (3) to achieve the sealing between the cabin door (2) and the cabin door frame (3).

2. The sealing structure between the upward-opening aircraft cabin door and the cabin door frame according to claim 1, characterized in that The cabin door frame (3) is provided with an annular sealing flange; When the cabin door (2) is closed in the cabin door frame (3), the sealing strip (4) is pressed against the annular sealing flange to achieve the sealing between the cabin door (2) and the cabin door frame (3).

3. The sealing structure between the upward-opening aircraft cabin door and the cabin door frame according to claim 1, characterized in that The top flange of the cabin door (2) is inclined inward.

4. The sealing structure between the upward-opening aircraft cabin door and the cabin door frame according to claim 1, characterized in that Further comprising: A sealing groove (5) is connected to the edge of the outer skin of the cabin door (2) along the circumference, and the part at the top of the cabin door (2) is connected to the flow-stop sealing support bar (1); The outer side of the sealing strip (4) has a strip-shaped convex edge, and the strip-shaped convex edge is stuck in the sealing groove (5).

5. The sealing structure between the upward-folding aircraft cabin door and the cabin door frame according to claim 1, characterized in that, Further comprising: A cabin door angle connector (6), stuck on the top of the cabin door (2), one side wall is connected to the outer skin of the top of the cabin door (2), the other side wall is connected to the top flange of the cabin door (2), and a plurality of lugs are arranged on the outer side of the corner; A cabin door frame angle connector (7), stuck on the top of the cabin door frame (3), one side wall is connected to the outer skin of the top of the cabin door frame (3), the other side wall is connected to the top flange of the cabin door frame (3), and a plurality of lugs are arranged on the outer side of the corner; A through bar (8) is arranged through the through holes of each lug on the cabin door angle connector (6) and the cabin door frame angle connector (7); the lugs on the cabin door angle connector (6) and the lugs on the cabin door frame angle connector (7) are arranged in a cross pattern.

6. The sealing structure between the upward-opening aircraft cabin door and the cabin door frame according to claim 1, characterized in that The length of the cabin door angle connector (6) is equivalent to the length of the top of the cabin door (2); The length of the cabin door frame angle connector (7) is equivalent to the length of the top of the cabin door frame (3).

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