Novel stepless adjustment aero seat armrest

Abstract

The utility model discloses a novel stepless adjustment aero seat armrest which comprises an armrest mounting seat, a rotating shaft, a sleeve, a conical thread bushing, a screw rod, a rotating wheel, an armrest shell and an armrest cover, the armrest mounting seat is fixed to the bottom of a seat backrest, the rotating shaft horizontally penetrates through the armrest mounting seat, the rotating shaft is sleeved with the sleeve, the rotating shaft is sleeved with the conical threaded sleeve and matched with the sleeve, the screw is vertically mounted on the rear side of the armrest mounting seat, the rotating wheel is fixed to the upper end of the screw, and the rotating shaft is sleeved with the armrest shell which is connected with the conical threaded sleeve. The armrest cover is mounted on the armrest shell; the rotating wheel is rotated to drive the screw rod to rotate, the screw rod drives the conical threaded sleeve to rotate along the rotating shaft, and stepless adjustment and locking of the angle of the handrail are achieved. The aero seat has the advantages of simple structure, high strength, light weight and the like, can be widely applied to various aero seats, and improves the comfort of passengers and drivers.

Description

Technical Field

[0001] This utility model relates to the field of aviation seat technology, and in particular to a novel stepless adjustable aviation seat armrest. Background Technology

[0002] Aircraft seats play a crucial role in flight safety, and their performance directly impacts product quality. Armrests are an important component of the seat, providing support for pilots and passengers during work and rest. If the armrests cannot be adjusted, the pilot's and passenger's arms will remain in one position for extended periods, leading to fatigue. The importance of armrest angle adjustment is even more pronounced for pilot seats.

[0003] Currently, passenger seat armrests generally cannot be angle-adjusted, only having two states: flat and upright. Driver seat armrests generally require buttons to control locking mechanisms to achieve angle adjustment, but buttons have a high failure rate, and the armrests cannot achieve stepless adjustment. Alternatively, angle adjustment can be achieved through ratchet and pawl mechanisms, but stepless adjustment is not possible, and the adjustment is generally limited to 5° or 10° increments.

[0004] Therefore, how to solve the above problems has become an urgent issue for those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a novel stepless adjustable armrest for aircraft seats, thereby solving the aforementioned problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] Reference Figure 1 The present invention relates to a novel stepless adjustable aircraft seat armrest, comprising an armrest mounting base, a pivot, a sleeve, a tapered threaded sleeve, a screw, a wheel, an armrest housing, and an armrest cover;

[0008] The armrest mounting base is fixed to the bottom of the seat back. A rotating shaft runs horizontally through the armrest mounting base. A sleeve is fitted onto the rotating shaft. A tapered threaded sleeve is fitted onto the rotating shaft and mates with the sleeve. A screw is vertically installed on the rear side of the armrest mounting base. A rotating wheel is fixed to the upper end of the screw. The armrest shell is fitted onto the rotating shaft and connected to the tapered threaded sleeve. An armrest cover is installed on the armrest shell. By rotating the rotating wheel, the screw is driven to rotate, and the screw drives the tapered threaded sleeve to rotate along the rotating shaft, thereby achieving stepless adjustment and locking of the armrest angle.

[0009] In some specific embodiments, the armrest mounting base is connected to the seat back by bolts to support the entire armrest structure, ensuring the stability and reliability of the armrest, and also serving as the mounting base for other components.

[0010] In some specific embodiments, bearings are provided at both ends of the rotating shaft. The bearings are installed on the inner side wall of the handrail housing to reduce rotational friction, improve service life, and ensure the smooth rotation of the handrail.

[0011] In some specific embodiments, the sleeve and the handrail mounting base are fixed by welding to provide stable rotational support for the rotating shaft and ensure the installation strength of the sleeve.

[0012] In some specific embodiments, the threaded engagement with the shaft is a high-precision trapezoidal thread, which improves transmission efficiency and self-locking performance, and ensures the accuracy and stability of the handrail angle adjustment.

[0013] In some specific embodiments, the screw and the screw mounting component are connected by a key to ensure the rotational stability of the screw and prevent radial displacement of the screw during rotation.

[0014] In some specific embodiments, the outer edge of the wheel is provided with anti-slip texture, which facilitates user operation and improves the feel and safety during the adjustment process.

[0015] In some specific embodiments, the armrest shell is made of carbon fiber in one piece. It has a hollow structure, is fitted onto the pivot and connected to a tapered threaded sleeve, forming the outer shell of the armrest, protecting the internal components and providing support.

[0016] In some specific embodiments, the armrest cover is made of polycarbonate and covered with a layer of soft polyurethane on the upper surface. It is snapped onto the armrest shell by a buckle and then fixed from the rear end of the armrest shell with screws to provide a comfortable support surface while protecting the internal structure.

[0017] The beneficial effects of this utility model are as follows: This utility model discloses a novel stepless adjustable armrest for an aircraft seat, including an armrest mounting base, a rotating shaft, a sleeve, a tapered threaded sleeve, a screw, a rotating wheel, an armrest shell, and an armrest cover. The armrest mounting base is fixed to the bottom of the seat back. The rotating shaft horizontally passes through the armrest mounting base. The sleeve is fitted onto the rotating shaft. The tapered threaded sleeve is fitted onto the rotating shaft and mates with the sleeve. The screw is vertically installed on the rear side of the armrest mounting base. The rotating wheel is fixed to the upper end of the screw. The armrest shell is fitted onto the rotating shaft and connected to the tapered threaded sleeve. The armrest cover is installed on the armrest shell. By rotating the rotating wheel, the screw is driven to rotate, and the screw drives the tapered threaded sleeve to rotate along the rotating shaft, thereby achieving stepless adjustment and locking of the armrest angle. The beneficial effects of this utility model are as follows:

[0018] Space optimization: The simplified armrest box design reduces space occupation, makes processing and molding easier, and improves overall reliability.

[0019] Lightweight design: Reducing the number of parts effectively lightens the weight of the handrail, meeting the stringent weight reduction requirements of the aviation industry.

[0020] Enhanced comfort: The armrest angle is infinitely adjustable, providing more ergonomic support for passengers and pilots, and significantly reducing fatigue during long flights. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a foldable, steplessly adjustable armrest structure for an aviation seat according to this utility model.

[0022] In the attached diagram: 1. Armrest cover; 2. Rotary wheel; 3. Armrest housing; 4. Screw mounting component; 5. Screw;

[0023] 6. Conical shape; 7. Shaft; 8. Handrail mounting base; 9. Sleeve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0025] Reference Figure 1 The present invention relates to a novel stepless adjustable aircraft seat armrest, comprising an armrest mounting base 8, a pivot 7, a sleeve 9, a tapered threaded sleeve 6, a screw 5, a rotating wheel 2, an armrest shell 3, and an armrest cover 1;

[0026] The armrest mounting base 8 is fixed to the bottom of the seat back. A rotating shaft 7 horizontally passes through the armrest mounting base 8. A sleeve 9 is fitted onto the rotating shaft 7. A tapered threaded sleeve 6 is fitted onto the rotating shaft 7 and mates with the sleeve 9. A screw 5 is vertically installed on the rear side of the armrest mounting base 8. A rotating wheel 2 is fixed to the upper end of the screw 5. An armrest shell 3 is fitted onto the rotating shaft 7 and connected to the tapered threaded sleeve 6. An armrest cover 1 is installed on the armrest shell 3. Rotating the rotating wheel 2 drives the screw 5 to rotate, which in turn drives the tapered threaded sleeve 6 to rotate along the rotating shaft 7, achieving stepless adjustment and locking of the armrest angle. The adjustment range is -3° to +90° relative to the horizontal plane. When not in use, the armrest can be folded up and stored behind the seat back.

[0027] In this embodiment, each structure is further described as follows:

[0028] I. Detailed Structural Description

[0029] Armrest mounting base 8: Located at the bottom of the seat back, it is the supporting base for the entire armrest structure.

[0030] Rotating shaft 7: It horizontally passes through the handrail mounting base 8, and its two ends are respectively connected to the side wall of the handrail shell 3, forming the central axis of the handrail rotation.

[0031] Sleeve 9: Fitted on the pivot 7, located inside the armrest mounting seat 8, providing stable rotational support for the pivot 7.

[0032] Tapered threaded sleeve 6: It is fitted onto the rotating shaft 7, located inside the sleeve 9, and engages with the thread on the rotating shaft 7.

[0033] Screw 5: Vertically installed on the rear side of the handrail mounting base 8 and fixed by screw mounting part 4.

[0034] Rotary wheel 2: Fixed to the upper end of screw 5, making it convenient for users to rotate.

[0035] Armrest shell 3: It is a hollow structure, fitted onto the pivot 7, and connected to the tapered threaded sleeve 6 to form the outer shell of the armrest.

[0036] Armrest cover 1: Installed on armrest shell 3, it is snapped into the armrest shell 3 by a buckle and fixed from the rear end of the armrest shell 3 with screws.

[0037] II. Connection Relationship

[0038] Handrail mounting base 8 and pivot 7: The pivot 7 horizontally passes through the handrail mounting base 8 and is connected to the side wall of the handrail housing 3 through a bearing, ensuring that the pivot 7 can rotate stably.

[0039] Rotating shaft 7 and sleeve 9: The sleeve 9 is fitted onto the rotating shaft 7 and fixed to the handrail mounting base 8 by welding, providing stable rotational support for the rotating shaft 7.

[0040] Rotating shaft 7 and tapered threaded sleeve 6: The tapered threaded sleeve 6 is fitted onto the rotating shaft 7 and engages with the thread on the rotating shaft 7. The inner wall of the sleeve meshes with the thread on the screw 5.

[0041] Handrail mounting base 8 and screw 5: Screw 5 is vertically installed on the rear side of handrail mounting base 8 and fixed by screw mounting part 4 to ensure stable installation of screw 5.

[0042] Screw 5 and wheel 2: Wheel 2 is fixed to the upper end of screw 5 and is connected by a key to ensure that wheel 2 can drive screw 5 to rotate stably.

[0043] Tapered threaded sleeve 6 and armrest shell 3: The armrest shell 3 is fitted onto the rotating shaft 7 and connected to the tapered threaded sleeve 6, ensuring that the armrest shell 3 can rotate as the tapered threaded sleeve 6 moves.

[0044] Armrest shell 3 and armrest cover 1: Armrest cover 1 is snapped into the armrest shell 3 by a buckle and fixed from the rear end of the armrest shell 3 with screws to ensure the stable installation of armrest cover 1.

[0045] III. Working Principle

[0046] Adjustment process: The user rotates the rotating wheel 2, which drives the screw 5 to rotate. The screw 5 and the tapered threaded sleeve 6 are in gear meshing state. The rotation of the screw 5 drives the tapered threaded sleeve 6 to rotate along the rotating shaft 7, which in turn drives the armrest shell 3 to rotate, so as to realize stepless adjustment of the armrest angle.

[0047] Locking principle: When the user stops rotating the wheel 2, the screw 5 and the tapered threaded sleeve 6 engage to create a self-locking effect, locking the handrail at the current angle position and ensuring stability during use.

[0048] Folding function: When the armrest is not in use, it can be folded up to the back of the seat to save space and facilitate passenger movement.

[0049] Functions of the four components

[0050] Handrail mounting base 8: Serves as the supporting foundation for the entire handrail structure, ensuring the stability and reliability of the handrail.

[0051] Rotating shaft 7: forms the central axis of the handrail rotation, ensuring that the handrail can be adjusted around its angle, while reducing rotational friction through bearings.

[0052] Sleeve 9: Provides stable rotational support for shaft 7, ensuring stable rotation of shaft 7 and improving service life.

[0053] Tapered threaded sleeve 6: It engages with the thread on the rotating shaft 7 and meshes with the thread on the screw 5, converting the rotational motion of the screw 5 into linear motion along the rotating shaft 7, thereby driving the armrest shell 3 to rotate and achieve angle adjustment.

[0054] Screw 5: Vertically installed on the rear side of the handrail mounting base 8, it rotates to drive the tapered threaded sleeve 6 to move along the rotating shaft 7, thereby adjusting the angle of the handrail.

[0055] Rotary wheel 2: Fixed to the upper end of screw 5, used for user rotation operation, driving screw 5 to rotate, making it easy for users to adjust the angle of the handrail.

[0056] Armrest shell 3: It forms the outer shell of the armrest, protects the internal components, and enables the armrest angle adjustment function by connecting with the tapered threaded sleeve 6.

[0057] Armrest cover 1: It is snapped onto the armrest shell 3 with a buckle and fixed with screws, providing a comfortable support surface while protecting the internal structure and improving the user experience.

[0058] Rotating wheel 2 drives screw 5 to rotate, which in turn drives tapered threaded sleeve 6 to rotate along shaft 7, achieving stepless adjustment and locking of the armrest angle. The adjustment range is -3° to +90° relative to the horizontal plane. When not in use, it can be folded up and stored behind the backrest. This design not only meets the diverse needs of passengers and drivers for armrest angle but also has advantages such as simple structure, high strength, and light weight, significantly improving the comfort and functionality of aviation seats.

[0059] In some specific embodiments, the armrest mounting base 8 is connected to the seat back by bolts to support the entire armrest structure, ensuring the stability and reliability of the armrest, and also serving as the mounting base for other components.

[0060] This connection method ensures that the armrest mounting base 8 can be firmly fixed to the bottom of the seat back, thereby supporting the entire armrest structure and ensuring the stability and reliability of the armrest. The armrest mounting base 8 not only serves as the supporting foundation for the entire armrest structure but also provides mounting interfaces for other components, ensuring the stability and reliability of the entire armrest system.

[0061] In some specific embodiments, bearings are provided at both ends of the rotating shaft 7. The bearings are installed on the inner side wall of the handrail housing 3 to reduce rotational friction, improve service life, and ensure the smooth rotation of the handrail.

[0062] The bearing design significantly reduces friction on the pivot 7 during rotation, resulting in smoother armrest rotation and extending the lifespan of the pivot 7. This design ensures stable rotation of the armrest during adjustment, enhancing the user experience.

[0063] In some specific embodiments, the sleeve 9 is fixed to the handrail mounting base 8 by welding, providing stable rotational support for the rotating shaft 7 and ensuring the installation strength of the sleeve 9.

[0064] Welding is a robust connection method that ensures that the sleeve 9 will not loosen or shift during long-term use, thus providing stable rotational support for the shaft 7. This connection method ensures the installation strength of the sleeve 9, enabling the shaft 7 to rotate stably, thereby guaranteeing the stability and reliability of the entire handrail adjustment mechanism.

[0065] In some specific embodiments, the threaded fit between 6 and the rotating shaft 7 is a high-precision trapezoidal thread, which improves transmission efficiency and self-locking performance, and ensures the accuracy and stability of the handrail angle adjustment.

[0066] The threaded fit between the tapered threaded sleeve 6 and the rotating shaft 7 adopts a high-precision trapezoidal thread. The tapered threaded sleeve 6 is fitted onto the rotating shaft 7, located inside the sleeve 9. This high-precision trapezoidal thread fit improves transmission efficiency and ensures the accuracy and stability of the handrail angle adjustment. The trapezoidal thread has good self-locking performance, maintaining stability after adjustment to the required angle and preventing accidental movement of the handrail during use.

[0067] In some specific embodiments, the screw 5 and the screw mounting part 4 are connected by a key to ensure the rotational stability of the screw 5 and prevent the screw 5 from undergoing radial displacement during rotation.

[0068] The screw 5 and the screw mounting part 4 are connected by a key. The screw 5 is vertically mounted on the rear side of the handrail mounting base 8, and the screw mounting part 4 is fixed to the handrail mounting base 8. Key connection is a common mechanical connection method, achieved by machining keyways on both the screw 5 and the screw mounting part 4 and inserting a key. This connection method effectively transmits torque, ensuring the stability of the screw 5 during rotation and preventing radial displacement, thus guaranteeing the stability and reliability of the entire handrail adjustment mechanism.

[0069] In some specific embodiments, the outer edge of the rotating wheel 2 is provided with anti-slip texture, which facilitates user operation and improves the feel and safety during the adjustment process.

[0070] The rotating wheel 2, fixed to the upper end of the screw 5, is the operating component for adjusting the armrest angle. The anti-slip textured design increases the friction on the outer edge of the rotating wheel 2, making it easier for users to grip and rotate, improving the feel and safety during adjustment. This design is especially effective in preventing slippage when hands are wet or oily, ensuring users can easily and accurately adjust the armrest angle.

[0071] In some specific embodiments, the armrest shell 3 is made of carbon fiber in one piece. It has a hollow structure, is fitted onto the pivot 7 and connected to the tapered threaded sleeve 6, forming the outer shell of the armrest, protecting the internal components and providing support.

[0072] In a specific embodiment, the armrest shell 3 is manufactured using a one-piece carbon fiber molding process, forming a hollow structure. The armrest shell 3 is fitted onto the rotating shaft 7, located on the outside of the shaft 7, and connected to the tapered threaded sleeve 6. The tapered threaded sleeve 6 is on the rotating shaft 7. The armrest shell 3 is connected to the tapered threaded sleeve 6 through its internal structure, forming a whole and constituting the outer shell of the armrest, protecting the internal components and providing support. This design not only reduces the weight of the armrest but also improves its strength and rigidity, ensuring the stability and reliability of the armrest during adjustment.

[0073] In some specific embodiments, the armrest cover 1 is made of polycarbonate and covered with a layer of soft polyurethane on the upper surface. It is snapped onto the armrest shell 3 by a buckle and then fixed from the rear end of the armrest shell 3 with screws to provide a comfortable support surface while protecting the internal structure.

[0074] The armrest cover 1 is made of polycarbonate, which has good strength and toughness. A layer of soft polyurethane is covered on the upper surface of the armrest cover 1 to provide a comfortable support surface. The armrest cover 1 is snapped into the opening of the armrest shell 3 by a buckle, and then fixed from the rear end of the armrest shell 3 with screws to ensure reliable connection and protect the internal structure.

[0075] The working method of this utility model mainly includes the following steps:

[0076] Device start

[0077] Initial state: The armrest is in the stowed state, with the armrest cover flush against the back of the seat.

[0078] Activation procedure: When a passenger needs to use the handrail, they should grasp the handrail cover and gently pull the handrail outwards to form an angle with the seat back. The handrail is then ready for use.

[0079] Armrest angle adjustment

[0080] Adjustment preparation: When the handrail is in use, if passengers want to adjust the angle of the handrail for more comfortable support, they can perform the angle adjustment operation.

[0081] Adjustment process:

[0082] Clockwise rotation of the wheel: The wheel is fixed to the upper end of the screw. Rotating the wheel clockwise causes the screw to rotate accordingly. The screw and the tapered threaded sleeve are in gear meshing. The rotation of the screw drives the tapered threaded sleeve to move in a certain direction along the axis of rotation. The tapered threaded sleeve is connected to the armrest shell. Its movement causes the armrest shell to rotate counterclockwise around the axis of rotation, thereby reducing the opening angle of the armrest.

[0083] Counterclockwise rotation of the wheel: If it is necessary to increase the opening angle of the handrail, the wheel can be rotated counterclockwise. The screw rotates in the opposite direction, and the tapered threaded sleeve moves in the opposite direction along the axis of rotation, causing the handrail shell to rotate clockwise around the axis of rotation, thereby increasing the opening angle of the handrail.

[0084] Adjustment range: The armrest angle can be adjusted from -3° to +90° to meet the needs of passengers in different flight phases and different sitting positions.

[0085] Angle Lock

[0086] Locking principle: When the passenger stops rotating the wheel, the screw engages with the tapered threaded sleeve, creating a self-locking effect that locks the handrail at its current angle, ensuring stability during use. This self-locking mechanism utilizes the friction between the threads and the stability of the mechanical structure to prevent the handrail from changing angle due to external forces during use.

[0087] Armrest Collection

[0088] Folding operation: When passengers no longer need to use the armrest, it can be folded up to the back of the seat, with the armrest cover close to the back of the seat, saving space and making it convenient for passengers to move around.

[0089] The beneficial effects of this utility model are mainly reflected in the following aspects:

[0090] Improve passenger comfort

[0091] Ergonomic fit: With stepless angle adjustment, passengers can adjust the armrest to a position that perfectly fits their arms and sides, conforming to ergonomics and effectively reducing arm and shoulder fatigue during long-haul flights, thus improving passenger comfort.

[0092] Adaptable to various body types and postures: Different passengers have different body types. This handrail allows passengers to adjust the angle of the handrail according to their own body type and sitting posture preferences, find the most suitable support method, and meet diverse needs.

[0093] Enhance driving safety

[0094] Precision control assistance: For pilots, the adjustable armrests enable them to maintain the correct sitting posture and arm position when operating flight controls, reducing operational errors caused by improper posture, enhancing the pilot's precise control of the aircraft, and improving flight safety.

[0095] Self-locking stability guarantee: After adjustment, the self-locking function ensures that the handrail remains stable during use and will not change its angle due to external force or vibration, providing reliable support for passengers and drivers and avoiding safety hazards caused by accidental movement.

[0096] Optimize space utilization and interior design

[0097] Flexible storage: When not in use, the armrests can be folded down and stored behind the seat back, saving cabin space, facilitating passenger movement and aisle passage, and also making cleaning and maintenance easier.

[0098] The interior design is user-friendly: the armrest shell is made of one-piece carbon fiber, and the hollow structure reduces weight while increasing strength. The surface of the armrest is covered with soft polyurethane to provide a comfortable support surface. The overall design is beautiful and practical, and it is coordinated and unified with the interior style of the aviation seats, enhancing the overall visual effect of the cabin.

[0099] Improve durability and reliability

[0100] High-strength structure: The armrest mounting base is bolted to the seat back, providing stable support for the entire armrest structure; the sleeve is welded to the armrest mounting base to ensure the rotational stability of the pivot; the screw and screw mounting part are connected by a key to prevent radial displacement of the screw and enhance rotational stability. The robust connection between the components improves durability, enabling it to operate for a long time under vibration and load conditions.

[0101] Stable self-locking performance: The screw and tapered threaded sleeve are fitted with high-precision trapezoidal threads, resulting in high transmission efficiency and excellent self-locking performance. After adjustment, it can stably maintain the set angle, preventing accidental movement, and can maintain precise adjustment and stable support even after long-term use.

[0102] Reduce maintenance costs

[0103] Simple structure and easy maintenance: The overall structure is simple with few parts, reducing potential failure points. Furthermore, the connection methods for each component, such as bolts, welding, and key connections, are mature and reliable, facilitating inspection and maintenance and reducing maintenance costs.

[0104] Long lifespan design: The use of high-performance materials such as carbon fiber and polycarbonate, along with high-precision trapezoidal threads, ensures that the handrails maintain good performance even with frequent adjustments and long-term use, reducing replacement frequency, extending service life, and lowering airline operating costs.

[0105] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel infinitely adjustable armrest for an aircraft seat, characterized in that: Includes a handrail mounting base (8), a pivot (7), a sleeve (9), a tapered threaded sleeve (6), a screw (5), a wheel (2), a handrail shell (3), and a handrail cover (1); The armrest mounting base (8) is fixed to the bottom of the seat back. The rotating shaft (7) passes horizontally through the armrest mounting base (8). The sleeve (9) is fitted onto the rotating shaft (7). The tapered threaded sleeve (6) is fitted onto the rotating shaft (7) and cooperates with the sleeve (9). The screw (5) is vertically installed on the rear side of the armrest mounting base (8). The rotating wheel (2) is fixed to the upper end of the screw (5). The armrest shell (3) is fitted onto the rotating shaft (7) and connected to the tapered threaded sleeve (6). The armrest cover (1) is installed on the armrest shell (3). By rotating the rotating wheel (2), the screw (5) is driven to rotate. The screw (5) drives the tapered threaded sleeve (6) to rotate along the rotating shaft (7), thereby realizing stepless adjustment and locking of the armrest angle.

2. The novel infinitely adjustable aircraft seat armrest according to claim 1, characterized in that, The armrest mounting base (8) is connected to the seat back by bolts to support the entire armrest structure, ensuring the stability and reliability of the armrest, and also serving as the mounting base for other components.

3. The novel infinitely adjustable aircraft seat armrest according to claim 1, characterized in that, The rotating shaft (7) is provided with bearings at both ends, and the bearings are installed on the inner side of the side wall of the armrest shell (3).

4. The novel infinitely adjustable aircraft seat armrest according to claim 1, characterized in that, The sleeve (9) is fixed to the handrail mounting base (8) by welding, providing stable rotational support for the rotating shaft (7) and ensuring the installation strength of the sleeve (9).

5. The novel infinitely adjustable aircraft seat armrest according to claim 1, characterized in that, The threaded fit between the tapered threaded sleeve (6) and the rotating shaft (7) is a high-precision trapezoidal thread, which improves transmission efficiency and self-locking performance, and ensures the accuracy and stability of the handrail angle adjustment.

6. The novel infinitely adjustable aircraft seat armrest according to claim 1, characterized in that, The screw (5) is connected to the screw mounting part (4) by a key to ensure the rotational stability of the screw (5) and prevent the screw (5) from undergoing radial displacement during rotation.

7. The novel infinitely adjustable aircraft seat armrest according to claim 1, characterized in that, The outer edge of the wheel (2) is provided with anti-slip texture, which makes it easy for users to operate and improves the feel and safety during the adjustment process.

8. The novel infinitely adjustable aircraft seat armrest according to claim 1, characterized in that, The armrest shell (3) is integrally molded from carbon fiber. It has a hollow structure, is fitted onto the pivot (7) and connected to the tapered threaded sleeve (6), forming the outer shell of the armrest, protecting the internal components and providing support.

9. The novel infinitely adjustable aircraft seat armrest according to claim 1, characterized in that, The armrest cover (1) is made of polycarbonate and covered with a layer of soft polyurethane on the upper surface. It is snapped to the armrest shell (3) by a buckle and then fixed from the rear end of the armrest shell (3) with screws to provide a comfortable support surface while protecting the internal structure.

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