Multidirectional high-speed rail business eccentric rotating seat

Abstract

The invention discloses a multi-directional high-speed rail business eccentric rotating seat, and relates to the technical field of train seats. A multi-directional high-speed rail business eccentric rotating seat comprises an eccentric rotating seat and a seat body arranged on the eccentric rotating seat. The eccentric rotating seat comprises a base; the first turntable comprises a first outer gear ring and a first inner ring which is in running fit with the inner side of the first outer gear ring, and the first outer gear ring is coaxially fixed on the base; and one side of the cantilever is fixedly connected with the first inner ring of the first turntable, and the cantilever can rotate around the axis of the base. The single motor is adopted to drive the planetary gear train, so that the seat can rotate around the axis of the seat and revolve around the center of the base at the same time, a compact eccentric rotation track is synthesized, the effective rotation radius is reduced in the limit space beside the fixed side cabinet, and the rotation interference problem of the non-circular seat is thoroughly solved.

Description

Technical Field

[0001] This invention relates to the field of train seat technology, specifically to a multi-directional high-speed rail business class eccentric rotating seat. Background Technology

[0002] In business class carriages of high-speed trains and other rail transit systems, to enhance the passenger experience, business class seats need to integrate multiple posture adjustment functions, such as sitting, semi-reclining, and fully reclining, and can flexibly adjust their orientation to adapt to different usage scenarios such as meeting guests and resting. Meanwhile, fixed side cabinets are commonly installed in the carriages, integrating key functional modules such as pull-out tables and reclining footrests. Due to the involvement of the overall carriage layout and safety regulations, the size, shape, and installation location of these side cabinets usually follow strict industry standards, which are difficult to change once set, constituting fixed spatial boundary conditions within the carriage.

[0003] Under such spatial constraints, achieving full functionality of business seating presents a significant challenge. Currently, the industry's commonly used solution is a rotary mechanism based on a single rotation axis, which drives the seat to rotate around a single fixed axis located directly below the seat's center. However, the actual shape of a business chair is not circular, but rather closer to an ellipse or has irregularly shaped structures with protruding parts. Figure 1 (As shown). When the seat rotates around its geometric center, the trajectory swept by its outermost edge forms a large circular motion envelope, meaning that the required theoretical rotation radius is relatively large.

[0004] This characteristic creates a core technical contradiction in the limited space next to a fixed side cabinet: when the seat rotates to a certain angle, its protruding frame interferes with the movement of the fixed side cabinet, physically blocking the rotation. This prevents the seat from achieving a full 360-degree turn, severely limiting its multi-functional potential, and passengers cannot obtain all preset orientation modes when positioned next to the side cabinet.

[0005] Therefore, there is an urgent need in this field for an innovative technical solution that can fundamentally solve the problem of motion interference between business seats and side cabinets while respecting the rigid premise of the fixed layout of the side cabinets. This would enable the seats to rotate freely and in multiple directions within the extreme space, fully meeting the dual needs of modern rail transit for the functionality and spatial adaptability of business seats.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention provides a multi-directional high-speed rail business class eccentric rotating seat to solve the problems mentioned in the background section.

[0008] This invention provides the following technical solution: a multi-directional high-speed rail business class eccentric rotating seat, comprising an eccentric rotating seat and a seat disposed on the eccentric rotating seat; the eccentric rotating seat includes: Base; The first turntable includes a first outer gear ring and a first inner ring that rotates with the inner side of the first outer gear ring. The first outer gear ring is coaxially fixed on the base. The cantilever is fixedly connected to the first inner ring of the first turntable on one side and can rotate around the axis of the base. The second turntable includes a second outer gear ring and a second inner ring that rotates with the inner side of the second outer gear ring. The second inner ring is fixedly installed on the other side of the cantilever. The upper end of the rotating shaft passes through the cantilever and is fixedly connected to the second outer gear ring of the second turntable; The transmission gear is coaxially fixed at the lower end of the rotating shaft and meshes with the first external gear ring of the first turntable for transmission. The drive mechanism is connected to the second turntable drive and is used to drive the second turntable to rotate.

[0009] Preferably, the drive mechanism includes: The motor is fixedly mounted on the cantilever; and The motor gear is fixedly mounted on the output shaft of the motor and meshes with the second external gear ring of the second turntable.

[0010] Preferably, it also includes a pose detector; the pose detector includes: The potentiometer gear is rotatably connected to the cantilever; and The potentiometer is fixed on the gear shaft of the potentiometer gear. Among them, the potentiometer gear meshes with the transmission gear to detect the revolution angle of the cantilever.

[0011] Preferably, the ratio of the number of teeth of the first external gear ring of the first turntable to the number of teeth of the transmission gear is 2:1.

[0012] Preferably, it also includes a self-locking mechanism, which is configured to prevent the second outer gear ring of the second turntable from rotating unexpectedly when the motor is powered off.

[0013] Preferably, the self-locking mechanism is an electromagnetic brake integrated inside the motor.

[0014] Preferably, the eccentric rotary seat further includes an assembly plate, which is fixed to the second outer gear ring of the second turntable; the seat is fixed to the assembly plate.

[0015] Preferably, the cantilever is an integral shell structure, with an internal mounting cavity for accommodating the transmission gear and potentiometer gear.

[0016] The multi-directional high-speed rail business class eccentric rotating seat provided in this embodiment of the invention has the following beneficial effects: (1) The present invention uses a planetary gear system driven by a single motor, which enables the seat to simultaneously rotate around its own axis and revolve around the center of the base, synthesizing a compact eccentric rotation trajectory. This reduces the effective rotation radius within the limited space next to the fixed side cabinet, thus completely solving the rotation interference problem of non-circular seats. (2) This invention, in conjunction with posture detection and closed-loop control, achieves precise positioning and smooth switching of different modes. At the same time, it uses a self-locking mechanism to ensure seat stability and operational safety. Ultimately, it achieves comprehensive benefits of structural simplification, cost reduction and reliability improvement with a single power source. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the business seat and the fixed side cabinet in the carriage after assembly according to the present invention; Figure 2 This is a structural schematic diagram of the business chair of the present invention; Figure 3 This is a schematic diagram of the eccentric rotating seat angle one in this invention; Figure 4 This is a schematic diagram of the eccentric rotating seat angle two in this invention; Figure 5 This is a schematic diagram of the eccentric rotating seat angle three in this invention; Figure 6 This is a schematic cross-sectional view of the eccentric rotary seat in this invention. Figure 7 For the present invention Figure 4 A magnified view of part A in the image; Figure 8 This is a schematic diagram of the eccentric rotary seat after the cantilever has been removed in this invention; Figure 9 This diagram illustrates the path of the business chair of the present invention as it rotates next to a fixed side cabinet. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] See Figures 1-9To address the problems mentioned in the background section, this invention provides a multi-directional high-speed rail business class eccentric rotating seat to solve the aforementioned technical problems. The technical solution is as follows: A multi-directional high-speed rail business class eccentric rotating seat includes an eccentric rotating seat 300 and a seat 100 disposed on the eccentric rotating seat 300; the eccentric rotating seat 300 includes: Base 310; Base 310 is fixed to the floor in the carriage and serves as a support structure for the entire seat 100; The first turntable 330 includes a first outer gear ring 332 and a first inner ring 331 that rotates with the inner side of the first outer gear ring 332. The first outer gear ring 332 is coaxially fixed on the base 310. The cantilever 320 is fixedly connected on one side to the first inner ring 331 of the first turntable 330, so that the cantilever 320 can rotate around the axis of the base 310. The second turntable 340 includes a second outer gear ring 341 and a second inner ring 342 that rotates with the inner side of the second outer gear ring 341. The second inner ring 342 is fixedly disposed on the other side of the cantilever 320. The upper end of the rotating shaft 351 passes through the cantilever 320 and is fixedly connected to the second external gear ring 341 of the second turntable 340. The cantilever 320 is provided with a channel for the rotating shaft 351 to pass through. The rotating shaft 351 and the channel are in clearance fit, and the rotating shaft 351 can rotate relative to the cantilever 320. The transmission gear 360 is coaxially fixed at the lower end of the rotating shaft 351 and meshes with the first external gear ring 332 of the first turntable 330 for transmission. The drive mechanism is connected to the second turntable 340 and is used to drive the second turntable 340 to rotate.

[0020] The outer gear ring and the inner gear ring are rotatable relative to each other; the first inner gear ring 331 and the second inner gear ring 342 are preferably slewing bearings.

[0021] In this embodiment, the drive mechanism includes: a motor 371, fixedly mounted on the cantilever 320; and The motor gear 372 is fixedly mounted on the output shaft of the motor 371 and meshes with the second external gear ring 341 of the second turntable 340.

[0022] In this embodiment, a pose detector is also included; the pose detector includes: Potentiometer gear 391 is rotatably connected to cantilever 320; and Potentiometer 392 is fixed on the gear shaft of potentiometer gear 391; Among them, the potentiometer gear 391 meshes with the transmission gear 360 and is used to detect the revolution angle of the cantilever 320.

[0023] It should be noted that the core function of the posture detector is to detect the revolution angle of the cantilever 320 in real time, and to provide feedback on the current posture of the seat 100 to the electronic control system, so as to provide signal support for the seat to accurately switch modes and avoid overtravel collisions.

[0024] The working principle of the position detector is that, because the potentiometer gear 391 meshes with the transmission gear 360, the rotation of the transmission gear can be converted into a rotation signal of the potentiometer 392. The electronic control system can use this signal to calculate the current mode position of the seat, which ensures that the seat can accurately stop at the target position and prevents the rotation from exceeding the range and colliding with the side cabinet 200. At the same time, it works with a single motor to achieve closed-loop control, making the adjustment more stable and reliable.

[0025] In this embodiment, the gear ratio between the first external gear ring 332 of the first turntable 330 and the transmission gear 360 is 2:1. This transmission ratio design, through a differential motion mechanism, achieves precise compression of the output end angular stroke and optimization of the motion space.

[0026] Specifically, when the motor drives the second turntable 340 to rotate around its own axis, the meshing relationship between the transmission gear 360 and the first external gear ring 332 forces the cantilever 320 to drive the second turntable 340 to revolve around the center of the base 310. The superposition of these two movements causes the seat 100 fixed on the second turntable to produce a compound eccentric motion.

[0027] The essence of this movement is that while the seat rotates to adjust its orientation, its entire center of rotation also revolves around a small circular trajectory. This causes the movement trajectory of the outermost point of the seat to bend from a large-radius circle centered on a fixed center into a compact, irregular closed loop. It is this bending effect of the trajectory that significantly compresses the seat's movement envelope space on the horizontal plane, allowing it to rotate flexibly within the extreme space next to the side cabinet 200, thus fundamentally avoiding movement interference.

[0028] In this embodiment, a self-locking mechanism is also included. The self-locking mechanism is configured to prevent the second external gear ring 341 of the second turntable 340 from rotating unexpectedly when the motor 371 is de-energized. The self-locking mechanism is used to ensure seat stability and operational safety.

[0029] In this embodiment, the self-locking mechanism is an electromagnetic brake integrated inside the motor 371. The electromagnetic brake integrated inside the motor is a conventional prior art. If necessary, other self-locking mechanisms can be used. The main purpose is to ensure the stability and safety of the seat during use.

[0030] In this embodiment, the eccentric rotary seat 300 also includes an assembly plate 380, which is fixed on the second outer gear ring 341 of the second turntable 340; the seat 100 is fixed on the assembly plate 380.

[0031] Preferably, a mounting plate 352 is fixed on the second outer gear ring 341 of the second turntable 340. The bottom surface of the mounting plate 352 is fixedly connected to the rotating shaft 351 and the second outer gear ring 341, and the top surface of the mounting plate 352 is fixedly connected to the assembly plate 380.

[0032] In this embodiment, the cantilever 320 is an integral shell structure, and its interior forms a mounting cavity to accommodate the transmission gear 360 and the potentiometer gear 391.

[0033] The working process of a multi-directional high-speed rail business eccentric rotating seat provided in this embodiment of the invention is as follows: (1) System Start-up and Movement Command Issuance: When a passenger needs to adjust the seat orientation via the operating interface (such as a button or touch screen), the electronic control system receives the command. The system first checks the current status, and if the self-locking mechanism is in the locked state, it controls it to unlock first. Subsequently, the system sends a rotation signal to motor 371.

[0034] (2) Motor drive and primary transmission: The motor 371 starts and drives the motor gear 372 on its output shaft to rotate. Since the motor gear 372 meshes with the second external gear ring 341 fixedly mounted on the cantilever 320, and the motor 371 itself is fixed on the cantilever 320, the torque of the motor is converted into a driving force on the second external gear ring 341, driving the second external gear ring 341 to rotate around its own axis.

[0035] (3) Planetary transmission and compound motion generation: Because the second external gear ring 341 of the second turntable 340 is rigidly connected to the rotating shaft 351 and the transmission gear 360, and the transmission gear 360 is always meshed with the first external gear ring 332 fixedly installed on the first turntable 330 on the base 310, when the second external gear ring 341 rotates, it will synchronously drive the rotating shaft 351 and the transmission gear 360 to rotate as well.

[0036] Since the transmission gear 360 meshes with the first external gear ring 332, when it rotates, the gear tooth surface will be subjected to a reaction force from the fixed gear ring. This reaction force forces the entire transmission gear 360 and its connected rotating shaft 351 and second external gear ring 341 to travel along the circumference of the fixed gear ring 331, that is, to revolve around the axis of the base 310.

[0037] Furthermore, since one side of the cantilever 320 is fixedly connected to the first inner ring 331 on the first turntable 330, and the other side of the cantilever 320 is fixedly connected to the second inner ring 342 on the second turntable 340, the final result is the rotation of the cantilever 320 around the axis of the base 310. Thus, the seat 100 simultaneously receives rotation from the second turntable 340 and revolution from the cantilever 320, combining into a complex eccentric planar motion, such as... Figure 9 As shown.

[0038] (4) Posture feedback and motion control: During the revolution of the cantilever 320, the potentiometer gear 391, which meshes with the transmission gear 360, is driven to rotate, thereby driving the potentiometer 392 connected to it. The potentiometer 392 converts the rotation angle into an electrical signal and feeds it back to the electronic control system in real time. The electronic control system interprets this signal as the revolution angle of the cantilever 320 and performs a comprehensive calculation with the encoder signal of the motor 371 reflecting the rotation angle of the second turntable. This allows for the accurate calculation of the absolute position and orientation of the seat 100 within the vehicle, thereby achieving closed-loop motion control and ensuring that the seat can accurately and smoothly reach any preset mode position.

[0039] (5) Position locking and safety guarantee: When the seat 100 moves to the target position, the self-locking mechanism directly locks the rotational degree of freedom of the second turntable 340. Since the entire planetary gear system is in a self-locking state, the rotation and revolution of the seat 100 are reliably locked and cannot be moved by external force, thus ensuring passenger safety and seat stability.

[0040] It should be noted that the rotational motion of the seat in this invention is decomposed into two parts: revolution: the seat's center of rotation rotates around the center of the base; rotation: the seat simultaneously rotates around its own center of rotation. This composite motion ensures that when the seat needs to pass near the side cabinet 200, its effective radius of rotation is much smaller than the radius in traditional solutions. Through the revolution, the overall position of the seat creates a yielding effect, making room for rotation.

[0041] The multi-directional high-speed rail business eccentric rotating seat provided by this invention has the following beneficial effects: This invention uses a planetary gear system driven by a single motor, enabling the seat to simultaneously rotate around its own axis and revolve around the center of the base, synthesizing a compact eccentric rotation trajectory. This reduces the effective rotation radius within the limited space next to the fixed side cabinet, completely solving the rotation interference problem of non-circular seats. This invention, combined with posture detection and closed-loop control, achieves precise positioning and smooth switching between different modes of position. At the same time, it uses a self-locking mechanism to ensure seat stability and operational safety. Ultimately, it achieves comprehensive benefits of structural simplification, cost reduction, and improved reliability with a single power source.

[0042] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solutions and concepts of this invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A multi-directional high-speed business eccentric rotation seat, comprising an eccentric rotation base and a seat arranged on the eccentric rotation base; characterized in that, The eccentric rotary seat includes: Base; The first turntable includes a first outer gear ring and a first inner ring that rotates with the inner side of the first outer gear ring. The first outer gear ring is coaxially fixed on the base. The cantilever is fixed to the first inner ring of the first turntable on one side and can rotate around the axis of the base. The second turntable includes a second outer gear ring and a second inner ring that rotates with the inner side of the second outer gear ring. The second inner ring is fixedly installed on the other side of the cantilever. The upper end of the rotating shaft passes through the cantilever and is fixedly connected to the second outer gear ring of the second turntable; The transmission gear is coaxially fixed at the lower end of the rotating shaft and meshes with the first external gear ring of the first turntable for transmission. The drive mechanism is connected to the second turntable drive and is used to drive the second turntable to rotate.

2. The multi-directional high-speed business eccentric rotating seat according to claim 1, characterized in that, The drive mechanism includes: a motor, fixedly mounted on the cantilever; and The motor gear is fixedly mounted on the output shaft of the motor and meshes with the second external gear ring of the second turntable.

3. The multi-directional high-speed business eccentric rotating seat according to claim 1, characterized in that, It also includes a pose detector; the pose detector includes: The potentiometer gear is rotatably connected to the cantilever; and The potentiometer is fixed on the gear shaft of the potentiometer gear. Among them, the potentiometer gear meshes with the transmission gear to detect the revolution angle of the cantilever.

4. The multi-directional high-speed rail business class eccentric rotating seat according to claim 1, characterized in that, The ratio of the number of teeth of the first external gear ring of the first turntable to the number of teeth of the transmission gear is 2:

1.

5. The multi-directional high-speed rail business class eccentric rotating seat according to claim 1, characterized in that, It also includes a self-locking mechanism, which is configured to prevent the second outer gear ring of the second turntable from rotating unexpectedly when the motor is powered off.

6. The multi-directional high-speed rail business class eccentric rotating seat according to claim 5, characterized in that, The self-locking mechanism is an electromagnetic brake integrated inside the motor.

7. The multi-directional high-speed rail business class eccentric rotating seat according to claim 1, characterized in that, The eccentric rotary seat also includes an assembly plate, which is fixed to the second outer gear ring of the second turntable; the seat is fixed to the assembly plate.

8. The multi-directional high-speed rail business class eccentric rotating seat according to claim 1, characterized in that, The cantilever is a one-piece shell structure, with an internal mounting cavity for accommodating the transmission gear and potentiometer gear.

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