CN219063210U - Sealing structure of lampshade of aircraft navigation lamp - Google Patents
Sealing structure of lampshade of aircraft navigation lamp Download PDFInfo
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- CN219063210U CN219063210U CN202223361108.2U CN202223361108U CN219063210U CN 219063210 U CN219063210 U CN 219063210U CN 202223361108 U CN202223361108 U CN 202223361108U CN 219063210 U CN219063210 U CN 219063210U
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- lamp shade
- mouth frame
- joint strip
- sealing
- lampshade
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Abstract
The utility model provides a seal structure of aircraft navigation lamp shade, contains transparent lamp shade and the mouth frame of installation lamp shade, the mouth frame form by the subsidence frame of organism covering, the edge of lamp shade has the flange limit that matches with the mouth frame, be equipped with one deck joint strip between flange limit and the mouth frame of lamp shade, be equipped with the connecting hole that corresponds on flange limit and the mouth frame of lamp shade respectively, have the fastener to pass through connecting hole with lamp shade and mouth frame sealing connection, joint strip be an annular prefabricated structure, joint strip's shape is unanimous with the shape of mouth frame, joint strip's upper surface is the flange limit of plane and lamp shade matches, joint strip's lower surface is equipped with many parallel seal teeth along length direction, joint strip passes through the seal tooth crimping at mouth frame surface.
Description
Technical Field
The application relates to the technical field of aircraft design, in particular to an aircraft navigation lamp shade sealing structure.
Background
In order to meet the illumination requirement of the aircraft for safe sailing, a sailing lamp is generally arranged in the front edge cavity of the wing tip, the sailing lamp needs to be detachable and repairable, and in order to meet the functional requirement of the sailing lamp, a sailing lamp shade is installed on the wing tip and is made of transparent materials, the sailing lamp shade also needs to meet the sealing requirement except for meeting the light transmission requirement of the sailing lamp, and accumulated water and rainwater are prevented from leaking into the machine body through a connecting gap of the lamp shade to cause corrosion. At present, the widely used navigation lampshade sealing structure on the aircraft is connected with the structural parts through fasteners, and when the lampshade is installed, the sealing rubber strips are compressed, and the structural parts are compressed to achieve the sealing effect. The structure generally adopts the titanium alloy bushing, the titanium alloy bushing is in direct contact with the glass of the lampshade, the installation is difficult, the phenomenon of hole Bian Beng damage is easy to occur when the stress is overlarge, meanwhile, the traditional navigation lampshade sealing structure adopts the flat sealing rubber strip, the compression amount is small, the bonding degree between structural parts is limited, and particularly on a complex curved surface, the compression amount is even, the bonding degree with the appearance is poor, and the installation difficulty is large. In addition, at the fastener connecting position, the joint strip atress is too big, for other positions, can form wavy pit, influences bearing property and sealing performance between the part, and then influences the work performance of aircraft.
Therefore, a novel navigation lampshade sealing structure is hoped to be designed, the titanium alloy bushing and lampshade glass can be prevented from being in direct contact, damage caused by overlarge stress is generated, the problem of coaxiality deviation during installation of a lampshade can be well compensated, meanwhile, the sealing structure is good in supporting performance of a bolt connection part, high in fitting degree on a complex curved surface, large in compression compensation amount, good in adaptability to part shape change, uneven deformation caused by uneven local stress is avoided, and sealing and bearing requirements among aircraft parts are better met.
Disclosure of Invention
An object of the application is to provide an aircraft navigation light lamp shade seal structure, can effectually solve above-mentioned problem.
The utility model provides a seal structure of aircraft navigation lamp shade, contains transparent lamp shade and the mouth frame of installation lamp shade, the mouth frame form by the subsidence frame of organism covering, the edge of lamp shade has the flange limit that matches with the mouth frame, be equipped with one deck joint strip between flange limit and the mouth frame of lamp shade, be equipped with the connecting hole that corresponds on flange limit and the mouth frame of lamp shade respectively, have the fastener to pass through connecting hole with lamp shade and mouth frame sealing connection, its characterized in that joint strip be an annular prefabricated structure, joint strip's shape is unanimous with the shape of mouth frame, joint strip's upper surface is the plane and matches with the flange limit of lamp shade, joint strip's lower surface is equipped with many parallel seal teeth along length direction, joint strip passes through the seal tooth crimping at mouth frame surface.
The sealing structure of the aircraft navigation lamp shade is characterized in that a plurality of round holes matched with the positions of the fasteners are formed in the sealing rubber strip, and two circles of round sealing teeth are arranged around the round holes.
The sealing structure of the lampshade of the aircraft navigation lamp is characterized in that the connecting hole of the flange side of the lampshade is a step hole, a rigid bushing is embedded in the step hole, the height of the rigid bushing is larger than the thickness of the flange side and smaller than the sum of the thickness of the flange side and the thickness of a sealing rubber strip, and a rubber bushing is sleeved on the outer side wall of the rod body of the rigid bushing.
The beneficial effects of this application lie in: 1) The sealing structure has the advantages that the compression amount of the parallel racks on the sealing rubber strips on the complex curved surface is uniform, the lamination degree with the appearance is good, the extrusion stress in the installation process is reduced, the process assembly difficulty is improved well, the sealing performance of the installation of the navigation lampshade is improved, and the work performance of the whole aircraft is further improved. 2) The sealing structure has the advantages that the circular sealing teeth are arranged at the bolt connection part of the sealing rubber strip, the structural form that the saw teeth are combined with the circular shape is adopted, the compression compensation amount, the bearing capacity and the supporting performance during installation are increased, the wavy pits are prevented from being formed due to overlarge local stress, the sealing effect of the connection hole position is enhanced, and the service life of the sealing rubber strip is prolonged. 3) The sealing structure has the advantages that the rubber bushing is positioned between the metal bushing and the lampshade glass, so that the problem of coaxiality deviation during installation of the lampshade is more effectively compensated, meanwhile, the metal bushing is prevented from being in direct contact with the lampshade glass, the occurrence of glass hole edge breakage phenomenon is reduced, and the assembly performance among aircraft parts is improved.
The present application is described in further detail below with reference to the drawings of embodiments.
Drawings
FIG. 1 is a schematic illustration of an aircraft navigation light in relation to an aircraft airframe.
FIG. 2 is a schematic diagram of an aircraft navigation light cover and bezel assembly relationship.
FIG. 3 is a schematic diagram of the sealing strip.
Fig. 4 is an enlarged schematic view of a partial structure of the joint strip.
Fig. 5 is a schematic view of a seal structure of an aircraft navigation light cover.
The numbering in the figures illustrates: 1 aircraft organism, 2 mouthfuls frame, 3 navigation lights, 4 lamp shade, 5 joint strip, 6 round holes, 7 bar seal tooth, 8 circular seal tooth, 9 fastener, 10 rigid bush, 11 rubber bush.
Detailed Description
Referring to the attached drawings, a navigation light 3 of an airplane is installed in an airplane body 1, a transparent lampshade 4 of the navigation light 3 is arranged on the surface of the airplane body 1, the sealing structure of the navigation light lampshade of the airplane comprises the transparent lampshade 4 and a mouth frame 2 for installing the lampshade 4, the mouth frame 2 is formed by a sunken frame of the skin of the airplane body 1, a flange edge matched with the mouth frame is arranged at the edge of the lampshade 4, a layer of sealing rubber strip 5 is arranged between the flange edge of the lampshade 4 and the mouth frame 2, corresponding connecting holes are respectively formed in the flange edge of the lampshade and the mouth frame, fasteners 9 are used for sealing the lampshade 4 and the mouth frame 2 through the connecting holes, the sealing rubber strip 5 of the application is of an annular prefabricated structure, the shape of the sealing rubber strip 5 is consistent with the shape of the mouth frame 2, the upper surface of the sealing rubber strip 5 is matched with the flange edge of the lampshade 4 in a plane, four parallel strip-shaped sealing teeth 7 are arranged on the lower surface of the sealing rubber strip 5 along the length direction, a plurality of round holes 6 matched with the positions of the fasteners 9 are formed in the periphery of the round sealing rubber strip 6, two circles of sealing teeth 8 are respectively arranged on the periphery of the round holes 6, and the sealing rubber strip 5 is connected with the mouth frame through the sealing rubber strip 2 in a sealing rubber strip through the sealing teeth 2. The utility model provides a seal structure, the connecting hole on lamp shade 4 flange edge is a step hole, has inlayed a rigidity bush 10 in the step hole, and the thickness that this rigidity bush 10 highly is greater than lamp shade 4 flange edge is less than the thickness sum of lamp shade 4 flange edge and joint strip 5, still overlaps at the pole body lateral wall of rigidity bush 10 has a rubber bush 11, and fastener 9 passes rigidity bush 10 and mouth frame connection.
Referring to the drawings, the aircraft navigation lampshade sealing structure comprises a lampshade glass 2, a titanium alloy bushing 3, a rubber bushing 4, a sealing rubber strip 1 and a mouth frame 5. In implementation, the sealing rubber strip 1 and the lampshade glass 2 of the sealing structure are solidified into an integrated structure through rubber materials, when the navigation lampshade is installed, the titanium alloy bush 3 and the rubber bush 4 are firstly installed on the integrated structure, then are tightly pressed on the opening frame 5 through bolts, when the bolts are tightly screwed under fixed force, the sealing rubber strip 1 is subjected to larger pressure with a fixed value, the tooth shapes are staggered at the non-connecting position, the highly uniform saw teeth 6 are compressed, the compression compensation amount of the sealing rubber strip is improved, the round sleeve teeth 7 are also compressed under the action of the bolt connecting position, and the bearing capacity and the supportability of the sealing rubber strip 1 at the position are obviously enhanced. After that, when the saw teeth 6 and the circular nesting teeth 7 of the sealing rubber strip are compressed to a certain degree, the bolts reach the prefabricated stress, and the installation of the navigation lampshade is completed (as shown in fig. 3).
In implementation, as shown in fig. 3, the thickness of the sealing rubber strip 5 of the sealing structure of the navigation lamp shade is a fixed value, the section is zigzag, the tooth belt draft angle is uniform in height, and the sealing rubber strip is not changed along with the appearance of a part. When a small amount of accumulated water or water seeping occurs at the connecting position of the fastener 9, the circular sealing teeth 8 can play a secondary sealing role, the accumulated water is controlled to be distributed around the connecting hole and cannot reach other positions of the sealing rubber strip 5, and the sealing structure improves the compression compensation amount of the sealing rubber strip and further increases the sealing performance of the sealing rubber strip.
In practice, as shown in fig. 5, the rubber bushing 11 of the sealing structure of the navigation light lampshade of the present application is located between the lampshade 4 and the metal rigid bushing 10, so as to ensure that the two are not in direct contact. When the installation, if take place the hole site deviation phenomenon of lamp shade glass and mouth frame 2, then installation stress can produce the extrusion to the hole limit of lamp shade 4, when extrusion stress is too big, can appear lamp shade glass overlap, collapse the opening and damage phenomenon, this kind of seal structure, rubber bush 11 receives the extrusion, can be compressed, release a part installation stress, play certain supporting role to lamp shade glass, in addition, the seal tooth of this kind of navigation lamp shade seal structure's joint strip 5 is compressed, with rubber bush 11 combined action, play the effect of fine correction to the axiality of bolt hole in the installation, avoid axiality deviation too big and the difficult problem of installation that causes.
In the implementation, the sealing rubber strip 5 of the navigation lamp shade sealing structure is manufactured by adopting a secondary vulcanization method, after the primary vulcanization rubber strip is butted, rubber liquid is coated at the butt joint position, secondary vulcanization is carried out, and the curing of the sealing rubber strip 5 is completed, so that the navigation lamp shade sealing structure is formed. Therefore, tooth profile dislocation step difference can appear at two butt joints, and in order to ensure the continuity of tooth tops, a special tool is required to be adopted during processing, so that the lapping deviation of the saw teeth is ensured to be not more than (0.2-0.3) b (b is the maximum width of the saw teeth). In addition, in order to ensure that the sealing rubber strip 5 is easy to be demolded during manufacturing, the strip-shaped sealing teeth 7 and the circular sealing teeth 8 are required to have draft angles.
Claims (3)
1. The utility model provides a seal structure of aircraft navigation lamp shade, contains transparent lamp shade and the mouth frame of installation lamp shade, the mouth frame form by the subsidence frame of organism covering, the edge of lamp shade has the flange limit that matches with the mouth frame, be equipped with one deck joint strip between flange limit and the mouth frame of lamp shade, be equipped with the connecting hole that corresponds on flange limit and the mouth frame of lamp shade respectively, have the fastener to pass through connecting hole with lamp shade and mouth frame sealing connection, its characterized in that, joint strip be an annular prefabricated structure, joint strip's shape is unanimous with the shape of mouth frame, joint strip's upper surface is the plane and matches with the flange limit of lamp shade, joint strip's lower surface is equipped with many parallel seal teeth along length direction, joint strip passes through the seal tooth crimping at mouth frame surface.
2. The sealing structure of the lampshade of the aircraft navigation light according to claim 1, wherein the sealing rubber strip is provided with a plurality of round holes matched with the fastening pieces in position, and two circles of round sealing teeth are arranged around the round holes.
3. The sealing structure of the lampshade of the aircraft navigation light according to claim 1, wherein the connecting hole of the flange edge of the lampshade is a step hole, a rigid lining is embedded in the step hole, the height of the rigid lining is larger than the thickness of the flange edge and is smaller than the sum of the thickness of the flange edge and the thickness of the sealing rubber strip, and a rubber lining is sleeved on the outer side wall of the rod body of the rigid lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223361108.2U CN219063210U (en) | 2022-12-14 | 2022-12-14 | Sealing structure of lampshade of aircraft navigation lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223361108.2U CN219063210U (en) | 2022-12-14 | 2022-12-14 | Sealing structure of lampshade of aircraft navigation lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219063210U true CN219063210U (en) | 2023-05-23 |
Family
ID=86344360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223361108.2U Active CN219063210U (en) | 2022-12-14 | 2022-12-14 | Sealing structure of lampshade of aircraft navigation lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219063210U (en) |
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2022
- 2022-12-14 CN CN202223361108.2U patent/CN219063210U/en active Active
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