Multi-directional manual rotating high-speed rail business seat

Abstract

The application discloses a multi-direction manual rotation high-speed rail business seat and relates to the technical field of train seats. The multi-direction manual rotation high-speed rail business seat comprises a rotating seat and a seat arranged on the rotating seat. The rotating seat comprises a fixed base, a rotating disc which comprises an inner ring fixed on the fixed base and an outer ring in rotation cooperation with the inner ring, a rotating plate fixed on the outer ring of the rotating disc, a circular hole arranged on the rotating plate coaxially with the inner ring, a fixed seat fixed on the top of the inner ring of the rotating disc and located in the circular hole, and a guide piece fixed on the fixed seat and with a height higher than the top height of the circular hole. The rotating center of the seat can be offset relative to the fixed side cabinet through the cooperation of the sliding mechanism and the track constraint structure, interference in the limited space is successfully avoided, and multi-direction free rotation is realized.

Description

Technical Field

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

[0002] In business class carriages of high-speed trains and other rail transit systems, to enhance the passenger travel experience, business class seats typically integrate multiple posture adjustment functions, such as sitting, semi-reclining, and fully reclining, and must also have flexible orientation adjustment capabilities to adapt to different usage scenarios. Functional side cabinets are generally fixedly installed on the sides of the carriage. As an important in-vehicle facility, these integrate functional modules such as pull-out tables and reclining footrests. Due to limitations in the overall carriage layout and industry design standards, the size and installation position of these side cabinets are usually not adjustable, thus forming a fixed spatial boundary within the carriage.

[0003] Under such strict space constraints, achieving omnidirectional rotation of business chairs presents significant technical challenges. Current common solutions involve rotating the chair around a single fixed axis directly below its geometric center. However, because the shape of business chairs is typically not a standard circle (e.g., ...), this presents considerable technical difficulties. Figure 1 As shown in the figure, when it rotates around the center, the circular motion space swept by the outer edge of the seat is large, which makes its required theoretical rotation radius much larger than the actual usable space next to the side cabinet.

[0004] The direct conflict between the spatial requirements and the actual physical boundaries causes motion interference between the outer edge structure and the side cabinet when the seat rotates to a specific angle, interrupting the rotation and preventing the seat from achieving all preset orientations. This limitation not only restricts the full functionality of the seat but also negatively impacts the passenger experience.

[0005] Therefore, in view of the shortcomings of the existing technology, there is a clear and urgent technical need in this field: to provide an innovative seat rotation mechanism without relying on a complex electronic control system, so as to effectively avoid interference with the side cabinet under the extreme space conditions of being close to the side cabinet, and achieve stable and reliable multi-directional manual rotation, thereby fully meeting the functional needs of business seats in various scenarios.

[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, embodiments of the present invention provide a multi-directional manually rotatable high-speed rail business class seat to solve the problems mentioned in the background art.

[0008] This invention provides the following technical solution: a multi-directional manually rotating high-speed rail business class seat, comprising a rotating seat and a seat disposed on the rotating seat; the rotating seat includes: Fixed base; A turntable, comprising an inner ring fixed on a fixed base and an outer ring that rotates in conjunction with the inner ring; A rotating plate is fixed on the outer ring of the turntable, and a circular channel arranged coaxially with the inner ring is provided on the rotating plate; The fixing seat is fixed to the top of the inner ring of the turntable and located in the circular channel. The transverse cross section of the fixing seat is arc-shaped and arranged coaxially with the inner ring. The guide is fixed on the mounting base, and the height of the guide is higher than the top height of the circular channel; A linear guide mechanism is mounted on the rotary plate; The seat plate is slidably mounted above the rotary plate via a linear guide mechanism; A limiting guide plate is located between the base plate and the rotary plate and is fixed to the bottom of the base plate. A composite track groove is provided at the bottom of the limiting guide plate. The composite track groove includes a linear guide groove, and a first arc-shaped guide groove and a second arc-shaped guide groove connected to the linear guide groove; the guide member is slidably embedded in the composite track groove; the seat is fixed on the seat plate.

[0009] Preferably, the central angle corresponding to the first arc-shaped guide groove is 120 degrees; the central angle corresponding to the second arc-shaped guide groove is greater than 180 degrees and less than 360 degrees.

[0010] Preferably, the guide component is a bearing; a fixing rod is fixedly installed on the fixing seat, and the inner ring of the bearing is interference-fitted onto the fixing rod.

[0011] Preferably, the linear guide mechanism includes a slider fixed to the rotary plate and a slide rail that slides and matches the slider, the slide rail being fixed to the bottom of the base plate.

[0012] Preferably, two spaced sliders are provided on each side of the rotary plate; a slide rail slides on the two sliders on the same side.

[0013] Preferably, a locking toothed ring is coaxially fixed to the outer side of the fixed base; a stop is provided at the bottom of the rotating plate to stop the movement in conjunction with the locking toothed ring.

[0014] The multi-directional manually rotatable high-speed rail business class seat provided in this embodiment of the invention has the following beneficial effects: (1) The present invention enables the rotation center of the seat to be offset relative to the fixed side cabinet through the synergistic effect of the sliding mechanism and the trajectory constraint structure, thereby successfully avoiding interference in the limit space and realizing multi-directional free rotation.

[0015] (2) When it is necessary to perform the common reversal between mode 1 and mode 7, the seat can be rotated 120° around the axis to complete the process quickly; when it is necessary to switch to other modes, the seat is slid forward to reduce the rotation radius and then rotated within a range of more than 180°, which effectively avoids interference with the movement of the side cabinet.

[0016] (3) The mechanical manual solution of the present invention is reliable in structure and intuitive in operation. Without the need for a complex electronic control system, it successfully solves the problem of rotating non-circular business seats in a fixed space layout, which significantly improves space utilization and user experience. 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 schematic diagram of the structure of the business chair of the present invention; Figure 3 This is a schematic diagram of the rotating seat angle one in this invention; Figure 4 This is a schematic diagram of the structure of the rotating seat at angle two in this invention; Figure 5 This is a schematic cross-sectional view of the rotating seat in this invention; Figure 6 This is a structural diagram of the rotating plate, fixed base, and guide components in this invention; Figure 7 This is a schematic diagram of the limiting guide plate in this invention; Figure 8 This is a schematic diagram of the rotation of the business chair of the present invention in one mode; Figure 9 This is a schematic diagram of the rotation of the business chair of the present invention in mode two; Figure 10 This is a schematic diagram of the rotation of the business seat of the present invention in mode three; Figure 11 This is a schematic diagram of the rotation of the business chair of the present invention in mode four; Figure 12 This is a schematic diagram of the rotation of the business chair of the present invention in mode five; Figure 13 This is a schematic diagram of the rotation of the business seat of the present invention in mode six; Figure 14 This is a schematic diagram of the rotation of the business chair of the present invention in mode seven; Figure 15 This is a schematic diagram of the business chair of the present invention pushed to the middle position; Figure 16 This is a schematic diagram of the business chair of the present invention being pushed to a position close to the 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 1-16 To address the problems mentioned in the background section, this invention provides a multi-directional manually rotatable high-speed rail business class seat to solve the aforementioned technical problems. The technical solution is as follows: A multi-directional manually swivel high-speed rail business class seat includes a swivel seat 100 and a seat 200 disposed on the swivel seat; the swivel seat includes: Fixed base 110; The turntable includes an inner ring 132 fixed on a fixed base 110 and an outer ring 131 that rotatably engages with the inner ring 132. A rotating plate 150 is fixed on the outer ring 131 of the turntable, and a circular channel 151 is provided on the rotating plate 150, which is coaxially arranged with the inner ring 132. The fixing seat 141 is fixed to the top of the inner ring 132 of the turntable and located in the circular channel 151. The transverse cross section of the fixing seat 141 is arc-shaped and coaxially arranged with the inner ring 132. The guide 142 is fixed on the fixing base 141, and the height of the guide 142 is higher than the top height of the circular channel 151. A linear guide mechanism is mounted on the rotary plate 150; The seat plate 170 is slidably mounted above the rotary plate 150 via a linear guide mechanism; The limiting guide plate 160 is located between the base plate 170 and the rotary plate 150 and is fixed to the bottom of the base plate 170. The bottom of the limiting guide plate 160 is provided with a composite track groove. The composite track groove includes a linear guide groove 161, and a first arc-shaped guide groove 162 and a second arc-shaped guide groove 163 connected to the linear guide groove 161; the guide member 142 is slidably embedded in the composite track groove; the seat 200 is fixed on the seat plate 170.

[0020] In this embodiment, the central angle corresponding to the first arc-shaped guide groove 162 is 120 degrees; the central angle corresponding to the second arc-shaped guide groove 163 is greater than 180 degrees and less than 360 degrees.

[0021] It should be noted that the 120-degree design of the first arc-shaped guide groove 162 allows the seat to rotate 120 degrees at a specific angle directly between the two most frequently used orientations (mode one and mode seven) without sliding back and forth. This greatly simplifies the steps of the most frequently used operations and improves the user experience.

[0022] The second arc-shaped guide groove 163 is designed to be greater than 180 degrees and less than 360 degrees. It allows the seat to slide forward first to reduce the radius of rotation, and then rotate within a wide range of angles exceeding half a circle, thus enabling unobstructed access to multiple positions such as Mode 2 to Mode 6.

[0023] In this embodiment, the guide member 142 is a bearing; a fixing rod is fixedly mounted on the fixing seat 141, and the inner ring of the bearing is interference-fitted onto the fixing rod. When the seat slides or rotates, the outer ring of the bearing contacts and rolls against the composite track groove wall of the limiting guide plate 160. This reduces motion resistance, making manual operation more effortless and smoother.

[0024] In this embodiment, the linear guide mechanism includes a slider 171 fixed on the rotary plate 150 and a slide rail 172 that slides and matches the slider 171. The slide rail 172 is fixed to the bottom of the base plate 170.

[0025] In this embodiment, the slider 171 includes four blocks. Two sliders 171 are arranged at intervals on each side of the rotary plate 150. A slide rail 172 is slidably engaged on the two sliders 171 on the same side.

[0026] In this embodiment, a locking gear ring 120 is coaxially fixed to the outer side of the fixed base 110; a stop member is provided at the bottom of the rotating plate 150 to cooperate with the locking gear ring 120 to stop movement. The function of the stop member is to achieve reliable positioning of the turntable at any rotation angle by cooperating with the locking gear ring 120, and to prevent the seat from rotating accidentally during use.

[0027] In this embodiment, the stop includes a locking pin and an operating mechanism that drives it to engage or disengage with the locking gear ring 120; the head of the locking pin may be provided with teeth, and the operating mechanism may be a small cylinder or a push rod motor; if necessary, other locking mechanisms may be used, the purpose of which is mainly to ensure the stability and safety of the seat during use.

[0028] It should be noted that this type of positioning mechanism, which uses a locking pin and a gear ring for positioning, is a common component in the mechanical field. Its specific implementation (e.g., using a manual lever, electromagnetic drive, or other self-locking mechanisms) can have various options. This invention does not limit the specific implementation of this stop; any existing technology capable of achieving the same locking function can be applied. The focus of this patent is on the aforementioned innovative sliding mechanism and trajectory constraint structure.

[0029] This invention provides a multi-directional manually rotating high-speed rail business class seat, whose mode switching is achieved based on the cooperation between the guide component 142 and the composite track groove. The core operation is divided into two scenarios: "common reversal switching" and "intermediate mode switching," as detailed below: (a) Common switching: switching between mode 1 and mode 7 like Figure 8 , Figure 14 As shown, this switch does not require adjusting the seat's fore-aft position. The operation procedure is as follows: Prerequisite: Ensure that the seat 200 is at the rearmost position of the slide rail 172, that is, ensure that the guide 142 is located in the first arc-shaped guide groove 162 and maintains a fixed position; Operation action: Push seat 200 directly towards the target direction; Limiting and guiding mechanism: The guide member 142 fixed to the inner ring 132 will slide along the first arc-shaped guide groove 162 at the bottom of the limiting guide plate 160; Switching result: Because the central angle corresponding to the first arc-shaped guide groove 162 is precisely limited to 120°, it will force the seat 200 to complete a precise 120° rotation around the axis of the fixed base 110, and finally realize the rapid switching between mode one and mode seven.

[0030] (ii) Switching between intermediate modes: switch between modes two to six at will. like Figure 15 , Figure 16 As shown, this type of switching requires adjusting the seat's fore-and-aft position to avoid interference. The operation procedure is as follows: Pre-adjustment: The seat needs to be rotated first to rotate the guide 142 to the middle position of the first arc-shaped guide groove 162. Figure 15 (As shown), and then push the seat 200 forward along the slide rail 172 toward the side cabinet; Track guidance and space optimization: During the pushing process, the guide component 142 will slide along the straight guide groove 161 of the composite track groove, causing the overall rotation center of the seat to shift towards the side cabinet; this action can significantly reduce the range of motion space required for the seat to rotate, providing a structural basis for subsequent rotation avoidance and interference with the fixed side cabinet; Rotation preparation: Continuously push the seat until it reaches the foremost position of the slide rail 172, that is, ensure that the guide 142 is located in the second arc-shaped guide groove 163 and keep its position fixed. Figure 16 (as shown) Angle Adjustment and Mode Switching: After the seat reaches the front end of the slide rail, the guide 142 will slide into the second arc-shaped guide groove 163 of the composite track groove; because the central angle range corresponding to the second arc-shaped guide groove 163 is 180°-360°, the seat can rotate freely within this angle range and finally stop precisely at the desired angle. Figures 9-13The target positions are shown in any of the modes 2 to 6.

[0031] 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.

[0032] 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.

[0033] 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 manually rotatable high-speed rail business class seat, comprising a rotating seat and a seat disposed on the rotating seat; characterized in that, The rotating base includes: Fixed base; A turntable, comprising an inner ring fixed on a fixed base and an outer ring that rotates in conjunction with the inner ring; A rotating plate is fixed on the outer ring of the turntable, and a circular channel arranged coaxially with the inner ring is provided on the rotating plate; The fixing seat is fixed to the top of the inner ring of the turntable and located in the circular channel. The transverse cross section of the fixing seat is arc-shaped and arranged coaxially with the inner ring. The guide is fixed on the mounting base, and the height of the guide is higher than the top height of the circular channel; A linear guide mechanism is mounted on the rotary plate; The seat plate is slidably mounted above the rotary plate via a linear guide mechanism; A limiting guide plate is located between the base plate and the rotary plate and is fixed to the bottom of the base plate. A composite track groove is provided at the bottom of the limiting guide plate. The composite track groove includes a linear guide groove, and a first arc-shaped guide groove and a second arc-shaped guide groove connected to the linear guide groove; the guide member is slidably embedded in the composite track groove; the seat is fixed on the seat plate.

2. The multi-directional manually rotatable high-speed rail business class seat according to claim 1, characterized in that, The central angle corresponding to the first arc-shaped guide groove is 120 degrees; the central angle corresponding to the second arc-shaped guide groove is greater than 180 degrees and less than 360 degrees.

3. The multi-directional manually rotatable high-speed rail business class seat according to claim 1, characterized in that, The guide component is a bearing; a fixing rod is fixedly installed on the fixed seat, and the inner ring of the bearing is interference-fitted onto the fixing rod.

4. The multi-directional manually rotatable high-speed rail business class seat according to claim 1, characterized in that, The linear guide mechanism includes a slider fixed to a rotary plate and a slide rail that slides in accordance with the slider. The slide rail is fixed to the bottom of the base plate.

5. The multi-directional manually rotatable high-speed rail business class seat according to claim 4, characterized in that, Two spaced sliders are arranged on each side of the rotating plate; a slide rail slides on the two sliders on the same side.

6. The multi-directional manually rotatable high-speed rail business class seat according to claim 1, characterized in that, A locking toothed ring is coaxially fixed on the outer side of the fixed base; a stop is provided at the bottom of the rotating plate to cooperate with the locking toothed ring to stop movement.

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