An aircraft boarding door interior hinge arm

Abstract

This invention discloses an interior hinge arm for an aircraft boarding door, comprising a bracket, a linkage mechanism A, a linkage mechanism B, and an adjusting rotating sleeve. One end of the linkage mechanism B is telescopically connected to the adjusting rotating sleeve, and the other end is provided with the bracket rotatably connected thereto. One end of the linkage mechanism A is located inside the adjusting rotating sleeve and movably connected thereto, and the other end is provided with the bracket rotatably connected thereto. One bracket is installed on the interior trim, and the other is installed on the door. The length between the linkage mechanism B and the adjusting rotating sleeve is adjusted according to the installation space. When the door is opened, the linkage mechanism A and the adjusting rotating sleeve separate. When the door is released, the linkage mechanism A returns to its original position. By setting the linkage mechanism A, the linkage mechanism B, and the adjusting rotating sleeve, the hinge arm can adjust its length and spring back to its original position, giving it an automatic reset function and improving the application scenarios of the hinge arm.

Description

Technical Field

[0001] This invention relates to the field of hinge technology, and more particularly to an interior hinge arm for an aircraft boarding door. Background Technology

[0002] The aircraft boarding door hinge arm is a crucial component connecting the boarding door and the fuselage. The interior hinge arm of the boarding door is used to open and close the boarding door maintenance panel when the door is open or closed. Existing hinge arms have fixed lengths and can only be installed in fixed positions. When adjustments to the installation angle or position are needed, installation becomes impossible. Furthermore, many existing hinge arms only provide connection and support and cannot automatically reset. Once the door is opened via the hinge arm, it must be manually closed, which is inconvenient. Summary of the Invention

[0003] Purpose of the invention: The present invention provides an adjustable length hinge arm for the interior of an aircraft boarding door that can automatically reset, increasing its applicability and versatility.

[0004] Technical Solution: An interior hinge arm for an aircraft boarding door includes a bracket, a linkage mechanism A, a linkage mechanism B, and an adjusting rotating sleeve. One end of the linkage mechanism B is telescopically connected to the adjusting rotating sleeve, and the other end is provided with the bracket rotatably connected to it. One end of the linkage mechanism A is located inside the adjusting rotating sleeve and movably connected to it, and the other end is provided with the bracket rotatably connected to it. One bracket is installed on the interior trim, and the other is installed on the door. The length between the linkage mechanism B and the adjusting rotating sleeve is adjusted according to the installation space. When the door is opened, the linkage mechanism A and the adjusting rotating sleeve separate; when the door is released, the linkage mechanism A returns to its original position.

[0005] Furthermore, the linkage mechanism A includes a connecting rod device A, a connecting pin device A, and a connecting rod device. The connecting rod device A is straddling the bracket and rotatably connected thereto. One end of the connecting rod device is located at the middle position of the connecting rod device A and rotatably connected thereto via the connecting pin device A. The other end of the connecting rod device is located inside the adjusting rotating sleeve and movably connected thereto.

[0006] Furthermore, the connecting rod device A includes a connecting rod A and a bushing A. Both ends of the connecting rod A are provided with bushings A that are interference-fitted with it, and both ends of the bushings A are rotatably connected to the bracket.

[0007] Furthermore, the connecting pin device A includes a fixed pin A and a cotter pin A. The connecting rod device is rotatably connected to the connecting rod device A by the fixed pin A located at the middle position. The cotter pin A is located at both ends of the fixed pin A.

[0008] Furthermore, the connecting rod device includes a forked rod, a spring, a bushing, and a retaining ring. The connecting rod device A is rotatably connected to the forked end of the forked rod via the connecting pin device A. The retaining ring, the bushing, and the spring are sequentially arranged from the outside to the inside on the other end of the forked rod. The spring is sleeved on the forked rod. The bushing is movably connected to the forked rod. The retaining ring is engaged with the forked rod. The other end of the forked rod is located inside the adjusting rotating sleeve and is movably connected to it. One end of the spring is connected to the bushing, and the other end is connected to the adjusting rotating sleeve. A gasket A is provided at the connection between the connecting rod device A and the forked end of the forked rod.

[0009] Furthermore, the linkage mechanism B is located inside the adjusting rotating sleeve and is threadedly connected to it.

[0010] Furthermore, the linkage mechanism B includes a connecting rod device B, a connecting pin device B, and a fork-shaped joint. The connecting rod device B is straddling the bracket and rotatably connected thereto. The connecting rod device B is disposed within the fork-shaped end of the fork-shaped joint via the connecting pin device B and rotatably connected thereto. The adjusting rotatable sleeve is disposed within the other end of the fork-shaped joint and threaded thereto.

[0011] Furthermore, the connecting rod device B includes a connecting rod B and a bushing B. Both ends of the connecting rod B are provided with bushings B that are interference-fitted with it. Both ends of the bushings B are rotatably connected to the bracket. The connecting rod B is provided in the fork end of the fork joint and rotatably connected to it through the connecting pin device B.

[0012] Furthermore, the connecting pin device B includes a fixed pin B and a cotter pin B. The connecting rod device B is rotatably connected to the fork-shaped end of the fork-shaped connector via the fixed pin B, and the cotter pin B is located at both ends of the fixed pin B.

[0013] Furthermore, both the connecting rod device B and the fork-shaped end connection of the fork-shaped connector are provided with a gasket B.

[0014] Beneficial effects: The advantages of this invention are that by setting up linkage mechanism A, linkage mechanism B, and adjusting rotating sleeve, the hinge arm can be adjusted in length and can spring back to reset, giving it an automatic reset function, which expands the application scenarios of the hinge arm. Setting up bushing A, bushing B, and shims improves the wear resistance of the hinge arm and increases its service life. Setting up connecting pin device A and linkage mechanism B makes the hinge arm easier to assemble and disassemble, improving installation and disassembly efficiency and saving labor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the hinge arm;

[0016] Figure 2 This is a schematic diagram of the hinge arm section.

[0017] Figure 3 This is a schematic diagram of the bracket and linkage mechanism A combination;

[0018] Figure 4 This is a schematic diagram of the combination of connecting rod device A and connecting pin device A;

[0019] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0020] Figure 6 This is a schematic diagram of the hinge arm after installation. Detailed Implementation

[0021] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0022] An aircraft boarding door interior hinge arm, such as Figure 1 As for Figure 2 As shown, the assembly includes a bracket 1, a linkage mechanism A2, a linkage mechanism B3, and an adjusting rotating sleeve 4. One end of the linkage mechanism B3 is telescopically connected to the adjusting rotating sleeve 4. This telescopic connection means that the length between the linkage mechanism B3 and the adjusting rotating sleeve 4 can be adjusted. Specifically, the length of the interior hinge arm is controlled by the linkage mechanism B3 and the adjusting rotating sleeve 4. For example, according to the required length during installation, the linkage mechanism B3 can be installed at the corresponding position on the adjusting rotating sleeve 4. The telescopic connection specifically involves the linkage mechanism B3 being located inside the adjusting rotating sleeve 4 and threadedly connected to it. When the length needs to be adjusted, rotating the linkage mechanism B3 adjusts the entire hinge arm length. The threaded connection allows for convenient length adjustment and allows the hinge arm to be fixed at any position after adjustment. The other end is equipped with a rotating connection... The connecting bracket 1 can be understood as having a bracket 1 on the other end of the linkage mechanism B3. The connecting mechanism B and the bracket 1 are rotatably connected. One end of the linkage mechanism A2 is located inside the adjusting rotating sleeve 4 and is movably connected to it. The linkage mechanism A2 and the adjusting rotating sleeve 4 can rotate and extend and retract. The other end is provided with a bracket 1 rotatably connected to it. In use, one of the two brackets 1 is installed on the interior trim and the other is installed on the door. The distance between the linkage mechanism B3 and the adjusting rotating sleeve 4 is adjusted according to the installation position. When the door is opened, the linkage mechanism A2 and the adjusting rotating sleeve 4 separate. When the door is released, the linkage mechanism A2 and the adjusting rotating sleeve 4 spring back to close the door.

[0023] Linkage mechanism A2 includes connecting rod device A21, connecting pin device A22, and link device 23, such as Figure 3 As for Figure 4As shown, the connecting rod device A21 is straddling the bracket 1 and rotatably connected to it. One end of the connecting rod device 23 is located in the middle of the connecting rod device A21 through the connecting pin device A22 and rotatably connected to it. The connecting rod device 23 is located in the middle of the connecting rod device A21 so that the connecting rod device 23 rotates to both sides with the same amplitude. The other end of the connecting rod device 23 is located in the adjusting rotating sleeve 4 and movably connected to it.

[0024] The connecting rod device A21 includes a connecting rod A24 and a bushing A25. Both ends of the connecting rod A24 are provided with bushings A25 that are interference-fitted with it. That is, the bushings A25 are sleeved on both ends of the connecting rod A24 and the bushings A25 and the connecting rod A24 are interference-fitted. The interference fit can be understood as the connecting rod A24 and the bushings A25 rotating synchronously. Both ends of the bushings A25 are rotatably connected to the bracket 1. The bushings A25 are made of nylon wear-resistant material. The purpose of setting the bushings A25 is to increase wear resistance, because the bushings A25 and the bracket 1 are frequently rotatably connected.

[0025] The connecting pin device A22 includes a fixed pin A26 and a cotter pin A27. The connecting rod device 23 is rotatably connected to the connecting rod device A21 by the fixed pin A26 at the middle position. The cotter pin A27 is located at both ends of the fixed pin A26. The connecting pin device A22 with this mechanism is designed to facilitate the disassembly and reassembly of the connecting rod device 23 and the connecting rod device A21, because the frequent rotation between the connecting rod device 23 and the connecting rod device A21 will cause wear.

[0026] The connecting rod device 23 includes a fork-shaped rod 28, a spring 29, a bushing 210, and a retaining ring 211. The connecting rod device A21 is rotatably connected to the fork-shaped rod 28 via a connecting pin device A22, allowing the connecting rod device A21 and the fork-shaped rod 28 to rotate relative to each other. A gasket A is provided at the connection point between the connecting rod device A21 and the fork-shaped rod 28. The gasket A is made of wear-resistant nylon material. Because the connecting rod device A21 and the fork-shaped rod 28 rotate frequently and experience significant friction, the gasket A reduces wear and allows for timely replacement after wear. On the other end of the fork-shaped rod 28, from the outside to the inside, a retaining ring 211, a bushing 210, and a spring 29 are sequentially arranged. The spring 29 is sleeved on the fork-shaped rod 28. The bushing 210 is movably connected to the fork-shaped rod 28, meaning the bushing 210 is sleeved on the fork-shaped rod 28. The retaining ring 211 is engaged with the fork-shaped rod 28. Figure 5As shown, the function of bushing 210 is to prevent spring 29 from disengaging from fork rod 28, and the function of retaining ring 211 is to prevent bushing 210 from falling off. Because bushing 210 is relatively large, it is easier to prevent spring 29 from falling off. The setting of this mechanism makes the entire linkage device 23 easy to disassemble, and convenient to operate when some parts need to be replaced. The other end of fork rod 28 is located in the adjusting rotating sleeve 4 and is movably connected to it. One end of spring 29 is connected to bushing 210, and the other end is connected to adjusting rotating sleeve 4. It can be understood that one end of spring 29 is connected to bushing 210 and the other end is connected to adjusting rotating sleeve 4 in adjusting rotating sleeve 4. When fork rod 28 is subjected to outward pulling force, spring 29 is squeezed and spring 29 is compressed. When fork rod 28 is released, spring 29 needs to be reset, and spring 29 resets fork rod 28.

[0027] The linkage mechanism B3 includes a connecting rod device B31, a connecting pin device B32, and a fork-shaped joint 33. The connecting rod device B31 is mounted across the bracket 1 and rotatably connected to it. The connecting rod device B31 is located inside the fork-shaped end of the fork-shaped joint 33 via the connecting pin device B32 and rotatably connected to it. A gasket B is provided at the connection between the connecting rod device B31 and the fork-shaped end of the fork-shaped joint 33. The gasket B is made of nylon wear-resistant material. Because the connecting rod device B31 and the fork-shaped end of the fork-shaped joint 33 rotate frequently and have a large friction, the gasket B can reduce wear and can be replaced in time after wear. The fork-shaped joint 33 is located in the middle of the connecting rod device B31 so that the connecting rod device 23 rotates to the same extent on both sides. The adjusting rotating sleeve 4 is located inside the other end of the fork-shaped joint 33 and is threadedly connected to it. It can be understood as rotating the fork-shaped joint 33 to adjust the length of the hinge arm.

[0028] The connecting rod device B31 includes a connecting rod B34 and a bushing B35. Both ends of the connecting rod B34 are provided with bushings B35 that are interference-fitted with it. That is, the bushings B35 are sleeved on both ends of the connecting rod B34 and the bushings B35 and the connecting rod B34 are interference-fitted. The interference fit can be understood as the connecting rod B34 and the bushings B35 rotating synchronously. Both ends of the bushings B35 are rotatably connected to the bracket 1. The bushings B35 are made of nylon wear-resistant material. The purpose of setting the bushings B35 is to increase wear resistance, because the bushings B35 and the bracket 1 are frequently rotatably connected. The connecting rod B34 is provided in the fork end of the fork joint 33 through the connecting pin device B32 and is rotatably connected to it.

[0029] The connecting pin device B32 includes a fixed pin B36 and a cotter pin B37. The connecting rod device B31 is rotatably connected to the fork end of the fork joint 33 via the fixed pin B36. The cotter pin B37 is located at both ends of the fixed pin B36. The connecting pin device B32 with this mechanism is designed to facilitate the disassembly and reassembly of the connecting rod device 23 and the connecting rod device B31, because the frequent rotation between the connecting rod device 23 and the connecting rod device B31 will cause wear.

[0030] The usage and working principle of hinge arms, such as Figure 6 As shown, one bracket 1 is installed on the interior trim and the other on the door. Because the distance between the position adjustment linkage mechanism B3 and the adjustment rotating sleeve 4 can be adjusted by rotation, the two brackets 1 have more installation options, increasing the usage scenarios. After installation, when the door is opened, the linkage mechanism A2 and the adjustment rotating sleeve 4 will separate. When the door is released, the linkage mechanism A2 returns to its original position under the action of the spring 29, causing the door to close, thus giving the door an automatic closing function.

Claims

1. An aircraft boarding door interior hinge arm characterized by, The system includes a bracket (1), a linkage mechanism A (2), a linkage mechanism B (3), and an adjusting rotating sleeve (4). One end of the linkage mechanism B (3) is telescopically connected to the adjusting rotating sleeve (4), and the other end is provided with the bracket (1) rotatably connected to it. One end of the linkage mechanism A (2) is located inside the adjusting rotating sleeve (4) and movably connected to it, and the other end is provided with the bracket (1) rotatably connected to it. One bracket (1) is installed on the interior trim, and the other is installed on the door. The length between the linkage mechanism B (3) and the adjusting rotating sleeve (4) is adjusted according to the installation space. When the door is opened, the linkage mechanism A (2) and the adjusting rotating sleeve (4) separate. When the door is released, the linkage mechanism A (2) returns to its original position. The linkage mechanism A (2) includes a connecting rod device A (21), a connecting pin device A (22), and a connecting rod device (23). The connecting rod device A (21) is mounted across the bracket (1) and rotatably connected thereto. One end of the connecting rod device (23) is located in the middle of the connecting rod device A (21) through the connecting pin device A (22) and rotatably connected thereto. The other end of the connecting rod device (23) is located inside the adjusting rotating sleeve (4) and movably connected thereto. The connecting rod device (23) includes a forked rod (28), a spring (29), a bushing (210), and a retaining ring (211). The connecting rod device A (21) is rotatably connected to the forked end of the forked rod (28) via the connecting pin device A (22). The retaining ring (211), the bushing (210), and the spring (29) are sequentially arranged from the outside to the inside on the other end of the forked rod (28). The spring (29) is sleeved on the forked rod. On (28), the bushing (210) and the fork rod (28) are movably connected, the retaining ring (211) and the fork rod (28) are snapped together, the other end of the fork rod (28) is located inside the adjusting rotating sleeve (4) and is movably connected thereto, one end of the spring (29) is connected to the bushing (210) and the other end is connected to the adjusting rotating sleeve (4), and a gasket A is provided at the connection between the connecting rod device A (21) and the fork end of the fork rod (28).

2. The aircraft boarding door interior hinge arm according to claim 1, characterized in that, The connecting rod device A (21) includes a connecting rod A (24) and a bushing A (25). Both ends of the connecting rod A (24) are provided with bushings A (25) that are interference fit with it. Both ends of the bushings A (25) are rotatably connected to the bracket (1).

3. The aircraft boarding door interior hinge arm according to claim 1, characterized in that, The connecting pin device A (22) includes a fixed pin A (26) and a cotter pin A (27). The connecting rod device (23) is rotatably connected to the connecting rod device A (21) by the fixed pin A (26) located in the middle position. The cotter pin A (27) is located at both ends of the fixed pin A (26).

4. The aircraft boarding door interior hinge arm according to claim 1, characterized in that, The linkage mechanism B (3) is located inside the adjusting rotating sleeve (4) and is threadedly connected to it.

5. The aircraft boarding door interior hinge arm according to claim 4, characterized in that, The linkage mechanism B (3) includes a connecting rod device B (31), a connecting pin device B (32), and a fork-shaped joint (33). The connecting rod device B (31) is mounted across the bracket (1) and rotatably connected thereto. The connecting rod device B (31) is located inside the fork-shaped end of the fork-shaped joint (33) and rotatably connected thereto via the connecting pin device B (32). The adjusting rotating sleeve (4) is located inside the other end of the fork-shaped joint (33) and threaded thereto.

6. The aircraft boarding door interior hinge arm according to claim 5, characterized in that, The connecting rod device B (31) includes a connecting rod B (34) and a bushing B (35). Both ends of the connecting rod B (34) are provided with bushings B (35) that are interference fit with it. Both ends of the bushings B (35) are rotatably connected to the bracket (1). The connecting rod B (34) is provided in the fork end of the fork joint (33) and rotatably connected to it through the connecting pin device B (32).

7. The aircraft boarding door interior hinge arm according to claim 5, characterized in that, The connecting pin device B (32) includes a fixed pin B (36) and a cotter pin B (37). The connecting rod device B (31) is rotatably connected to the fork-shaped joint (33) by means of the fixed pin B (36). The cotter pin B (37) is located at both ends of the fixed pin B (36).

8. The aircraft boarding door interior hinge arm according to claim 5, characterized in that, The connecting rod device B (31) and the fork-shaped connector (33) are provided with a gasket B at the fork-shaped end connection.

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