Tail door hinge

Abstract

The utility model belongs to the technical field of hinges, and provides a tail door hinge which is composed of a left assembly and a right assembly which is in mirror symmetry with the left assembly, the left assembly or the right assembly comprises a sliding support, a fixed support and a rod end support, an arc guide groove is formed in the fixed support, the sliding support is embedded in the inner side of the fixed support, and the rod end support is connected with the sliding support. The rod end support penetrates through the arc guide groove to be connected with the sliding support and limits the sliding support in the arc guide groove to slide in a guiding mode so that the tail door can be opened and closed. The concealed folding hinge has the advantages that the concealed folding hinge, the tail door and the machine body are seamlessly attached, the shape of the attached edge of the tail door and the machine body does not need to be changed, the structure is simple, 180-degree installation and more than 100-degree opening can be achieved without an additional support, the movement envelope of the hinge is small, an auxiliary hovering limiting device is compact, and the occupied internal space is small; and the influence on the machine body and the tail gate structure is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of hinges, and in particular relates to a tailgate hinge. Background Art

[0002] The tail door of a vertical lift aircraft has high requirements for sealing, and a hinge is required to meet the following functions: zero gap between the tail door and the fuselage and no interference in movement. Due to the limited manufacturing process of the carbon fiber tail door, the hinge needs to be installed at 180° and can be opened more than 100°. At the same time, it is compactly arranged in a compact internal layout space, and the hinge can be hovered or limited by a drive device. It is light in weight and simple in structure. Conventional tail door hinges have gaps on the outside or the hinges are exposed, which not only looks ugly but also affects aerodynamics and is easy to get rain and dust. Using a crank connecting rod or a multi-link hinge is difficult to achieve 180-degree installation while occupying a small space at the same time, because the movement envelope of the connecting rod is large when it swings, and it occupies more internal space. The fuselage and tail door structure need to be adjusted to avoid, and the tail door panel has a certain thickness. When using a gooseneck hinge, the shape of the tail door and the fuselage fitting edge needs to be modified to ensure seamless connection and no interference. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tailgate hinge which is seamlessly fitted with a machine body, has a simple structure, a small hinge movement envelope, and has little influence on the machine body and the tailgate structure in view of the current status of the prior art.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a tailgate hinge, composed of a left component and a mirror-symmetrical right component thereof, characterized in that the left component or the right component includes a sliding bracket, a fixed bracket and a rod end bracket, the fixed bracket is provided with an arc guide groove, the sliding bracket is nested inside the fixed bracket, the rod end bracket passes through the arc guide groove to be connected with the sliding bracket and restricts the sliding bracket to slide in the arc guide groove to realize the opening and closing of the tailgate.

[0005] In the above-mentioned tailgate hinge, the side surface of the sliding bracket is fan-shaped, the bottom surface is tile-shaped, and the longitudinal cross-section is L-shaped. A horizontal limit groove is opened in the middle of the bottom surface of the sliding bracket, and there are two guide connection holes at the front end of the side surface of the sliding bracket. The guide connection holes are distributed on a circle concentric with the fan-shaped arc.

[0006] In the above-mentioned tailgate hinge, the left component or the right component further includes a sliding pin shaft, which passes through the guide connection hole on the side of the sliding bracket and the arc guide groove of the fixed bracket in sequence and then is connected to the rod end bracket.

[0007] In the above-mentioned tailgate hinge, the fitting surfaces of the fixed bracket and the sliding bracket have a wear-resistant lubricating layer, and a wear-resistant gasket is also arranged between the sliding pin and the rod end bracket. The sliding pin passes through the wear-resistant gasket and the rod end bracket for riveting or screwing.

[0008] In the above-mentioned tailgate hinge, the side surface of the fixing bracket is fan-shaped, a circular arc guide groove is provided on the concentric circle in the middle of the fan, and the bottom surface of the fixing bracket is tile-shaped.

[0009] In the above-mentioned tailgate hinge, the bottom tail end of the fixed bracket has a vertical flange, the longitudinal section of the fixed bracket is U-shaped, and the section of other areas is L-shaped, and the flange is inserted into the transverse limit groove of the sliding bracket for limiting.

[0010] In the above-mentioned tailgate hinge, the rod end bracket is fixedly connected to the sliding bracket through a sliding pin, and the rod end bracket has a through hole for connecting mechanical devices such as a cylinder, a support rod, a spring, and a limiter.

[0011] In the above-mentioned tailgate hinge, a connecting surface is also extended from the front end of the fixing bracket in the front-to-back direction, and a fixing hole is provided on the connecting surface for screwing or riveting the fixing bracket to the body, and a process through hole is provided in the middle of the side surface of the fixing bracket.

[0012] In the above-mentioned tailgate hinge, one end of the sliding bracket has a tailgate connecting portion connected to the tailgate, the sliding pin connects the sliding bracket and the rod end bracket, and passes through the arc guide groove on the side of the fixed bracket to clamp the fixed bracket in the middle, the connecting surface of the fixed bracket is fixed to the body, the inner side of the bottom surface of the fixed bracket fits the outer side of the tile-shaped bottom surface of the sliding bracket, and supports the tailgate connected to the sliding bracket and the tailgate connecting portion.

[0013] Compared with the prior art, the advantages of the present invention lie in the hidden folding hinge, the tailgate is seamlessly fitted with the body, there is no need to change the shape of the tailgate and the body, the structure is simple, and no additional bracket is required. It can be installed at 180° and open more than 100° at the same time, the hinge movement envelope is small, the auxiliary hovering limit device is compact, and it occupies less internal space, with less impact on the body and tailgate structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the tailgate hinge;

[0015] Figure 2 It is a schematic diagram of the connection structure of the fixed bracket, the sliding bracket and the rod end bracket;

[0016] Figure 3 It is a schematic diagram of the matching structure of the fixed bracket and the transverse limit groove;

[0017] Figure 4 This is a schematic diagram of the structure when the tailgate is closed using the tailgate hinge;

[0018] Figure 5 This is a schematic diagram of the structure when the tailgate is opened using the tailgate hinge;

[0019] Figure 6 Structural schematic diagram of the fixed bracket and sliding bracket installation. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] In the figure, there are sliding bracket 100; tailgate connecting part 101; fixed bracket 200; connecting surface 201; rod end bracket 300; sliding pin 400; mechanical device 500; transverse limit groove 600; guide connecting hole 700; wear-resistant gasket 800; arc guide groove 900; process through hole 1000; tailgate 1100; body 1200; flange 1300.

[0022] like Figure 1 As shown, the tailgate hinge is composed of a left component and a mirror-symmetrical right component. The left component or the right component includes a sliding bracket 100, a fixed bracket 200, a rod end bracket 300 and a sliding pin 400. The sliding pin 400 passes through the sliding bracket 100 and the fixed bracket 200 in sequence and is connected to the rod end bracket 300. The rod end bracket 300 has a through hole for connecting a cylinder, a strut, a spring, a limiter and other mechanical devices 500 to assist in limiting and opening and closing, such as mechanical electric and pneumatic devices to assist in limiting and opening and closing. The fixed bracket 200 has a through hole. The arc guide groove 900, the sliding bracket 100 is nested inside the fixed bracket 200, the rod end bracket 300 passes through the arc guide groove 900 to connect with the sliding bracket 100 and restricts the sliding bracket 100 to the arc guide groove 900 to guide the sliding to realize the opening and closing of the tailgate 1100. Here, the patent is a mirror-symmetric left and right hinge assembly, and the arc guide sliding opens and closes the tailgate 1100. The sliding bracket 100, the fixed bracket 200, the rod end bracket 300 and the mechanical electric and pneumatic devices can achieve a large angle installation of 180 degrees, which takes up less space.

[0023] Specifically, if Figure 2 , Figure 3 as well as Figure 6As shown, the side of the sliding bracket 100 is fan-shaped, the bottom is tile-shaped, and the longitudinal section is L-shaped. A transverse limit groove 600 is opened in the middle of the bottom surface of the sliding bracket 100. There are two guide connection holes 700 at the front end of the side of the sliding bracket 100. The guide connection holes 700 are distributed on a circumference concentric with the fan-shaped arc. The left component or the right component also includes a sliding pin 400. There are two sliding pins 400. The bottom surface of the two sliding pins 400 is an oblong and the upper part is a stepped cylinder. The sliding pins 400 pass through the guide connection holes 700 on the side of the sliding bracket 100 and the arc guide groove 900 of the fixed bracket 200 in sequence. It is then connected to the rod end bracket 300, so that a larger opening angle (>100 degrees) can be achieved. At the same time, the two straight edges of the bottom surfaces of the two sliding pins 400 are adjacent to each other during installation to prevent rotation and loosening. As a further optimization, in order to reduce friction when the sliding bracket 100 moves, the fitting surfaces of the fixed bracket 200 and the sliding bracket 100 are provided with a wear-resistant lubricating layer, and a wear-resistant gasket 800 is further provided between the sliding pin 400 and the rod end bracket 300. The sliding pin 400 passes through the wear-resistant gasket 800 and the rod end bracket 300 for riveting or screwing. Through the wear-resistant gasket 800, the long edges of the bottom surfaces of the two sliding pins 400 are adjacent to each other during installation to prevent rotation and loosening.

[0024] The side of the fixed bracket 200 is fan-shaped, and there is an arc guide groove 900 on the concentric circumference in the middle of the fan-shaped. The bottom surface of the fixed bracket 200 is tile-shaped, and there is a vertical flange 1300 at the tail end of the bottom surface of the fixed bracket 200. The longitudinal section of the fixed bracket 200 is U-shaped, and the section of other areas is L-shaped. The flange 1300 is inserted into the transverse limit groove 600 of the sliding bracket 100 for limiting, thereby improving stability. The rod end bracket 300 is fixedly connected to the sliding bracket through the sliding pin 400. On the frame 100, a connecting surface 201 is also extended from the front end of the fixing bracket 200 in the front-to-back direction. The connecting surface 201 has a fixing hole for screwing or riveting the fixing bracket 200 to the body 1200. There is a process through hole 1000 in the middle of the side of the fixing bracket 200. Here, the process through hole 1000 can be used to confirm whether the left and right hinges are coaxial when installing the hinge, and can also be used as a spare hole for structural reinforcement to hang the hinge on the body 1200 to improve the bracket load.

[0025] like Figure 5 as well as Figure 6As shown, one end of the sliding bracket 100 has a tailgate connecting portion 101 connected to the tailgate 1100, the sliding pin 400 connects the sliding bracket 100 and the rod end bracket 300, and passes through the arc guide groove 900 on the side of the fixed bracket 200 to sandwich the fixed bracket 200 in the middle, the connecting surface 201 of the fixed bracket 200 is fixed to the body 1200, the inner side of the bottom surface of the fixed bracket 200 is attached to the outer side of the tile-shaped bottom surface of the sliding bracket 100, and the tailgate 1100 connected by the sliding bracket 100 and the tailgate connecting portion 101 is lifted. When the tailgate 1100 needs to be opened during operation, the mechanical device 5 00 pushes the rod end bracket 300, and the rod end bracket 300 drives the sliding pin 400, the wear-resistant gasket 800, and the sliding bracket 100 to slide along the arc guide groove 900 and the bottom surface of the fixed bracket 200, and rotates the tailgate 1100 to open. When the sliding pin 400 on the side of the sliding bracket 100 slides to the tail end of the arc guide groove 900 on the side of the fixed bracket 200, the sliding bracket 100 no longer slides. At this time, the flange 1300 of the fixed bracket 200 is inserted into the transverse limit groove 600 of the sliding bracket 100, which can prevent the sliding pin 400 of the sliding bracket 100 from longitudinally detaching, making it more stable.

[0026] The specific embodiments described in this article are merely examples of the spirit of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications to the described specific embodiments or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A tailgate hinge, comprising a left component and a mirror-symmetrical right component, characterized in that: The left component or the right component includes a sliding bracket, a fixed bracket and a rod end bracket. The fixed bracket is provided with an arc guide groove, and the sliding bracket is nested inside the fixed bracket. The rod end bracket passes through the arc guide groove to connect with the sliding bracket and restricts the sliding bracket to slide in the arc guide groove to realize the opening and closing of the tailgate.

2. A tailgate hinge according to claim 1, characterized in that: The side of the sliding bracket is fan-shaped, the bottom is tile-shaped, and the longitudinal section is L-shaped. A horizontal limit groove is opened in the middle of the bottom of the sliding bracket, and there are two guide connection holes at the front end of the side of the sliding bracket. The guide connection holes are distributed on a circle concentric with the fan-shaped arc.

3. A tailgate hinge according to claim 1 or 2, characterized in that: The left component or the right component also includes a sliding pin shaft, which passes through the guide connection hole on the side of the sliding bracket and the arc guide groove of the fixed bracket in sequence and then is connected to the rod end bracket.

4. A tailgate hinge according to claim 3, characterized in that: The fitting surfaces of the fixed bracket and the sliding bracket are provided with a wear-resistant lubricating layer, and a wear-resistant gasket is also arranged between the sliding pin and the rod end bracket. The sliding pin passes through the wear-resistant gasket and the rod end bracket for riveting or screwing.

5. The tailgate hinge according to claim 1, characterized in that: The side surface of the fixing bracket is fan-shaped, and a circular arc guide groove is arranged on the concentric circle in the middle of the fan-shaped bracket, and the bottom surface of the fixing bracket is tile-shaped.

6. A tailgate hinge according to claim 5, characterized in that: The bottom tail end of the fixed bracket has a vertical flange, the longitudinal section of the fixed bracket is U-shaped, and the section of other areas is L-shaped, and the flange is inserted into the transverse limiting groove of the sliding bracket for limiting.

7. The tailgate hinge according to claim 3, characterized in that: The rod end bracket is fixedly connected to the sliding bracket through a sliding pin shaft, and a through hole is provided on the rod end bracket for connecting the mechanical devices of the cylinder, the support rod, the spring and the limiter.

8. The tailgate hinge according to claim 4, characterized in that: A connection surface is also extended from the front end of the fixing bracket in the front-to-back direction. The connection surface has a fixing hole for screwing or riveting the fixing bracket to the machine body. A process through hole is provided in the middle of the side surface of the fixing bracket.

9. The tailgate hinge according to claim 8, characterized in that: One end of the sliding bracket has a tailgate connecting portion connected to the tailgate, the sliding pin connects the sliding bracket and the rod end bracket, and passes through the arc guide groove on the side of the fixed bracket to clamp the fixed bracket in the middle, the connecting surface of the fixed bracket is fixed to the body, the inner side of the bottom surface of the fixed bracket fits the outer side of the tile-shaped bottom surface of the sliding bracket, and supports the tailgate connected to the sliding bracket and the tailgate connecting portion.

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