A bidirectional seat commutation structure for rail vehicles

Abstract

The present invention discloses a bidirectional seat commutation structure for a rail vehicle, which includes a seat frame, end plates and connecting plates. Two end plates are respectively hinge-mounted at both ends of the connecting plate. The seat frame includes two side frames and a support bracket installed between the two side frames. A limiting component is installed in the support bracket. At the upper part of the side frames facing each other, there are limiting grooves and flipping control grooves. When the end plate is bent to a 90-degree state with the connecting plate, the flipping components provided on both sides of the end plate facing the side frames can extend into the limiting grooves and the flipping control grooves. There is a hollow chamber at the hinge connection between the end plate and the connecting plate. The flipping components are arranged in the hollow chamber. A locking member is installed in the hollow chamber. The end plate is provided with a fixed toothed ring installed on the outside. Two sets of matching mechanisms are received and installed in each side frame. A stepping hydraulic device connected to the matching mechanism can be installed in the side frame. A transverse translation propelling member matched with the matching mechanism is installed outside the flipping control groove.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation seating appliances, and particularly to a bidirectional seat reversing structure for rail vehicles. Background Art

[0002] In order to meet the transportation capacity requirements, both ends of existing high-speed trains are equipped with locomotive heads, so as to achieve rapid reversing driving. When a high-speed train reverses, the direction of the seats needs to be adjusted. Existing high-speed train seats all use a rotating mechanism at the bottom to rotate 180° to reverse back and forth. This not only requires sufficient space between the front and rear seats for rotation and reversing, but also requires the flight attendant to push the entire seat forcefully during the reversing process, which greatly consumes the physical strength of the flight attendant's work.

[0003] The patent with the publication number CN220163864U discloses a seat structure with a backrest that can be reversed back and forth. The seat structure includes a base, a backrest, and a connecting rod group arranged on both sides of the backrest and connecting the backrest and the base. The number of connecting rods in the connecting rod group on the same side of the backrest is not less than two. One end of the connecting rod is connected to the base through a first rotating shaft, and the other end of the connecting rod is connected to the backrest through a second rotating shaft. A limiting structure for restricting the swinging angle of the connecting rod is provided on the base. The backrest of this application realizes the forward and backward direction adjustment through the swinging of the connecting rod groups on both sides, and limits the swinging angle of the connecting rod by setting a limiting mechanism. Combining the stability of the structure after limiting of the connecting rod groups on both sides, the backrest can stand stably on both sides of the seat. This application's reversing structure reduces the locking mechanism that directly fixes the backrest to the base, avoids the unlocking step required when the backrest is reversed back and forth, and saves the seat reversing time. However, when this device reverses, the seat surface and the backrest of the seat will be swapped. Since the backrest faces the leg activity range of the rear passengers, it is more likely to be soiled. And when the soiled backrest is reversed, it will be used as the seat surface for passengers, resulting in difficulty for passengers to continue sitting. At the same time, in order to ensure the comfort of seating, the seat surface of the seat usually has more cushion devices than the backrest. And adopting the reversing scheme of the aforementioned application, in order to ensure the same comfort, cushions need to be installed on both the seat surface and the backrest of the seat, which increases the setting cost of the seat. Moreover, the backrest with cushions installed will also occupy the leg space of the rear passengers and cause discomfort. For this reason, we propose a bidirectional seat reversing structure for rail vehicles. Summary of the Invention

[0004] In order to solve the problems mentioned in the above background art, the present invention provides a bidirectional seat reversing structure for rail vehicles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A two-way seat reversing structure for a rail vehicle, comprising a seat frame, end plates (and) connecting plates. Two end plates are respectively hinge-mounted at both ends of the connecting plate. The seat frame includes two side stands and a supporting bracket installed between the two side stands. A limiting component is installed in the supporting bracket. The upper parts of the two side stands facing each other have limiting grooves and flipping control grooves. When the end plates are bent to a 90-degree state with the connecting plate, the flipping components arranged on both sides of the end plates facing the side stands can extend into the limiting grooves and the flipping control grooves;

[0007] The hinge connection between the end plate and the connecting plate has a hollow chamber. The flipping components are arranged in the hollow chamber. A locking piece is installed in the hollow chamber. The end plate is provided with a fixed toothed ring installed on the outside;

[0008] Two sets of matching mechanisms are received and installed in each side stand. A stepping hydraulic device connected to the matching mechanism can be installed in the side stand. A transverse movement propelling piece matched with the matching mechanism is installed outside the flipping control groove.

[0009] Preferably, the side of the end plate away from the passenger's body has a limiting mating opening. The limiting component includes a hollow fixed cylinder, a passive lifting column and a limiting piece. The hollow fixed cylinder is fixedly installed in the supporting bracket. The passive lifting column is movably installed up and down in the hollow fixed cylinder. The limiting piece is fixedly installed at the end of the upper part of the passive lifting column protruding from the hollow fixed cylinder. The side wall of the hollow fixed cylinder has a guiding rail. The outside of the passive lifting column has a limiting rod inserted into the guiding rail. The guiding rail has a vertical section and an inclined movement section.

[0010] Preferably, the upper surface of the supporting bracket allows the limiting piece to protrude upward. When the end plate moves to the designated position on the upper surface of the supporting bracket, the limiting mating opening can just correspond to the protruding opening of the limiting piece on the upper surface of the supporting bracket. The bottom opening of the limiting mating opening just allows the limiting piece to be placed in. The upper part of the limiting mating opening has a space allowing the limiting piece to rotate therein.

[0011] Preferably, the flipping component includes a transverse movement sleeve, a linkage wheel set and a linkage rod. The transverse movement sleeve is horizontally movably installed in the hollow chamber and is locked and cannot rotate axially. Rotating rods are installed on both sides of the connecting plate and inserted into the transverse movement sleeve. At least one short insertion rod is arranged outside the rotating rod. Threaded grooves for inserting the short insertion rod are arranged on the inner wall of the transverse movement sleeve. One end of the linkage wheel set and the linkage rod is axially rotatably installed on the side of the transverse movement sleeve away from the connecting plate.

[0012] Preferably, the limiting groove is used to limit the axial rotation of the inserted linkage rod. One side of the flipping control groove is provided with teeth and can mesh with the inserted linkage wheel set. The two ends of the limiting groove and the flipping control groove have quasi-inlets. A gear capable of meshing with the fixed toothed ring is arranged at one end of the linkage wheel set close to the connecting plate.

[0013] Preferably, the gear ratio between the gear of the linkage wheel set meshing with the fixed toothed ring and the fixed toothed ring is such that when the end plate moves from one side of the flipping control groove to the other side along with the linkage rod, the linkage wheel set can exactly drive the end plate to flip by ninety degrees.

[0014] Preferably, the matching mechanism includes a distribution pipe, a piston connecting rod, a vertical movement rack, a resilient expansion arm and a telescopic pull rod. The stepping hydraulic device includes a stepping vertical cylinder and a hydraulic cylinder. The stepping vertical cylinder is communicated with the hydraulic cylinder. When the stepping vertical cylinder is stepped down, the hydraulic fluid in the hydraulic cylinder will be squeezed into the distribution pipe through the hydraulic transmission pipe, thereby pushing the hydraulic piston in the distribution pipe to move.

[0015] Preferably, one end of the piston connecting rod is connected to the hydraulic piston in the distribution pipe, and the other end is connected to the vertical movement rack. The lower end of the vertical movement rack is connected to the piston connecting rod and can move up and down together with the piston connecting rod. The upper end of the vertical movement rack is connected to the resilient expansion arm rotating shaft, and the upper end of the resilient expansion arm is connected to the telescopic pull rod rotating shaft. The telescopic pull rod can be pulled to perform lengthwise expansion and contraction. A coil spring tending to flatten the resilient expansion arm is installed in the rotating shaft connected between the upper end of the resilient expansion arm and the telescopic pull rod.

[0016] Preferably, the transverse movement propelling member includes two fixed toothed discs and a spiral propelling member connected to the fixed toothed discs at both ends. The fixed toothed discs can be axially rotated by being driven by the vertically moving rack that is engaged with the teeth of the vertical movement rack. After the linkage rod moves into the limiting groove, it will be located between the gaps of the spiral blades of the spiral propelling member.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The present invention only needs to step on the stepping hydraulic device to drive one or even a row of multiple seats to change directions, greatly reducing the working intensity of the crew during the seat direction-changing work, making the seat direction-changing work fast, labor-saving and efficient.

[0019] 2. Before and after the direction change of the present invention, the side of the end plate facing the passengers will not be exchanged. When setting, only devices such as soft pads need to be set on the side facing the passengers to increase the riding comfort, reducing the setting cost of the seat structure. At the same time, after the seat structure changes direction, the area that is directly facing the rear passengers and is prone to dirt will not be converted into the seating surface of the passengers, and not installing a cushion behind the chair back will not occupy the leg space of the rear passengers and cause discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematic diagram of the main body of a two-way seat reversing structure for a rail vehicle according to the present invention;

[0022] Figure 2 Schematic diagram of the seat frame structure according to the present invention;

[0023] Figure 3 Schematic diagram of the end plate and connecting plate structures according to the present invention;

[0024] Figure 4 Schematic diagram of the matching mechanism, stepping hydraulic device, and transverse movement propulsion member according to the present invention;

[0025] Figure 5 Schematic diagram of the transmission assembly in one viewing direction according to the present invention;

[0026] Figure 6 Schematic diagram of the transmission assembly in another viewing direction according to the present invention.

[0027] In the figure: 1, seat frame; 101, limit groove; 102, flipping control groove; 103, guiding rail; 104, side cavity; 11, side stand; 12, supporting bracket; 13, limiting assembly; 131, hollow fixing cylinder; 132, passive lifting column; 133, limiting piece; 134, limiting rod; 14, flipping assembly; 141, transverse movement sleeve; 142, linkage wheel set; 143, linkage rod; 144, belt rotating rod; 15, transmission assembly; 151, transmission rod; 152, eccentric member; 153, turning handle; 2, end plate; 201, limit mating opening; 202, hollow chamber; 3, connecting plate; 4, locking member; 5, fixed tooth ring; 6, matching mechanism; 61, distribution pipe; 62, piston connecting rod; 63, vertical movement rack; 64, spring-back expansion arm; 65, telescopic pull rod; 7, stepping hydraulic device; 71, stepping vertical cylinder; 72, hydraulic cylinder; 73, hydraulic transmission pipe; 8, transverse movement propulsion member; 81, fixed tooth disc; 82, screw propulsion member. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1

[0030] Refer to Figures 1-6A two-way seat reversing structure for a rail vehicle comprises a seat frame 1, an end plate 2 and a connecting plate 3. The end plate 2 is provided with two hinges respectively installed at both ends of the connecting plate 3 to serve as a seat head pad and a seat cushion for passengers. The end plate 2 serving as a seat cushion is installed on the upper part of the seat frame 1 and is fixed.

[0031] The seat frame 1 includes two side frames 11 and a supporting frame 12 installed between the two side frames 11. A limiting assembly 13 is installed in the supporting frame 12 to lock the end plate 2 serving as a seat cushion on the supporting frame 12. The upper parts of the two side frames 11 facing each other have a limiting groove 101 and a flipping regulating groove 102. When the end plate 2 is bent to a ninety-degree state with the connecting plate 3, the flipping assembly 14 arranged on both sides of the end plate 2 facing the side frames 11 can extend into the limiting groove 101 and the flipping regulating groove 102. The user can drive the seat frame 1 to flip and change direction by stepping on the transmission assembly 15 installed in the side frames 11.

[0032] The end plate 2 has a limiting opening 201 on the side away from the passenger's body, and the limiting assembly 13 includes a hollow fixed cylinder 131, a passive lifting column 132 and a limiting piece 133. The hollow fixed cylinder 131 is fixedly installed in the support bracket 12, and the passive lifting column 132 can be installed in the hollow fixed cylinder 131 movably up and down. The limiting piece 133 is fixedly installed on the end of the passive lifting column 132 extending out of the hollow fixed cylinder 131 at the upper part, and the side wall of the hollow fixed cylinder 131 has a guide rail 103. The passive lifting column 132 has a limiting rod 134 inserted into the guide rail 103 on the outside, and the guide rail 103 has a vertical section and an oblique section. When the passive lifting column 132 moves up and down, the limiting rod 134 can cooperate with the inserted guide rail 103 to drive the passive lifting column 132 to rotate, thereby driving the limiting piece 133 to rotate coaxially.

[0033] The upper surface of the support bracket 12 allows the limiting piece 133 to protrude upward. When the end plate 2 moves to the specified position on the upper surface of the support bracket 12, the limiting opening 201 can just correspond to the protruding opening of the limiting piece 133 on the upper surface of the support bracket 12. The bottom opening of the limiting opening 201 just allows the limiting piece 133 to be inserted. The upper part of the limiting opening 201 has a space allowing the limiting piece 133 to rotate therein. If the limiting piece 133 rotates after being inserted into the limiting opening 201 from the bottom end, the rotating limiting piece 133 will not be able to fall out from the bottom of the limiting opening 201, thereby locking the end plate 2 on the support bracket 12.

[0034] Preferably, at least one of the side stands 11 is provided with a transmission assembly 15. The transmission assembly 15 includes a transmission rod 151 extending below the passive lifting column 132 into the hollow fixed cylinder 131 and an eccentric member 152 mounted at the end of the transmission rod 151 extending into the hollow fixed cylinder 131. The other end of the transmission rod 151 extends into a side cavity 104 provided in the side plate of the side stand 11, and a turning handle 153 is mounted at one end of the transmission rod 151 in the side cavity 104. After the user opens the side cavity 104, the user can grasp the turning handle 153 to drive the transmission rod 151 and the eccentric member 152 to rotate, thereby lifting or lowering the passive lifting column 132. After the user pulls up the turning handle 153 to lift the passive lifting column 132 and make it rotate, the user can install the turning handle 153 in a specified rotation position by means of the threaded docking installation of the threaded plug mounted at the end of the turning handle 153 and the fixed threaded head installed in the side cavity 104, so that the end plate 2 is stably locked to the supporting bracket 12. When adjustment and commutation are required, the user unlocks the turning handle 153 and pulls the turning handle 153 to rotate to lower the passive lifting column 132, so that the limiting piece 133 rotates to a position where it can be disengaged and then moves down to disengage from the limiting notch 201, so as to release the lock between the end plate 2 and the supporting bracket 12.

[0035] Embodiment 2

[0036] Referring to Figures 1-6 , the difference between this embodiment and Embodiment 1 is that a hollow chamber 202 is provided at the hinge connection between the end plate 2 and the connecting plate 3, and the flipping assembly 14 is arranged in the hollow chamber 202. The flipping assembly 14 includes a transverse movement sleeve 141, a linkage wheel set 142 and a linkage rod 143. The transverse movement sleeve 141 is horizontally movably installed in the hollow chamber 202 and is locked so that it cannot rotate axially. The connecting plate 3 is provided with a belt rod 144 inserted into the transverse movement sleeve 141 on both sides. At least one short insertion rod is arranged outside the belt rod 144. A threaded groove for the short insertion rod to be inserted is arranged on the inner wall of the transverse movement sleeve 141. When the belt rod 144 and the connecting plate 3 rotate relative to the end plate 2 synchronously, the transverse movement sleeve 141 that cannot rotate in the hollow chamber 202 will be pushed horizontally by the thread due to the relative rotation between the short insertion rod and the threaded groove.

[0037] A locking member 4 is installed in the hollow chamber 202, and the user can use the locking member 4 to lock the end plate 2 and the connecting plate 3 at a specified angle. When the end plate 2 and the connecting plate 3 are at a flat angle, the transverse movement sleeve 141 moves towards and remains close to the connecting plate 3. When the end plate 2 and the connecting plate 3 are at a right angle, the transverse movement sleeve 141 moves towards and remains away from the connecting plate 3.

[0038] One end of the linkage wheel set 142 and the linkage rod 143 is rotatably mounted axially on the side of the transverse movement sleeve 141 away from the connection plate 3. When the end plate 2 and the connection plate 3 form a flat angle, causing the transverse movement sleeve 141 to move towards and remain close to the connection plate 3, the linkage wheel set 142 and the linkage rod 143 will extend out of the hollow chamber 202. The lower linkage wheel set 142 and the linkage rod 143 will also be placed into the flipping control groove 102 and the limiting groove 101. It is worth mentioning that before performing the seat commutation operation, it is necessary to unlock the end plate 2 that was originally locked with the connection plate 3 in a flat angle state at the upper part, and switch it to a right angle state in the same direction as the bottom end plate 2 and lock it so that the linkage wheel set 142 and the linkage rod 143 in each hollow chamber 202 extend out for the commutation operation.

[0039] The limiting groove 101 is used to restrict the linkage rod 143 inserted therein from rotating axially. One side of the flipping control groove 102 is provided with teeth and can mesh with the linkage wheel set 142 placed therein. The ends of the linkage wheel set 142 and the linkage rod 143 extending out of the hollow chamber 202 are respectively inserted into the flipping control groove 102 and the limiting groove 101. The linkage rod 143 is driven to move the entire bottom end plate 2 away from the connection plate 3. When the end plate 2 moves, the gear of the linkage wheel set 142 will move synchronously in the flipping control groove 102, so that while the linkage wheel set 142 moves in the flipping control groove 102, it will also rotate axially. The end plate 2 is provided with a fixed tooth ring 5 mounted on the outside. One end of the linkage wheel set 142 close to the connection plate 3 is provided with a gear that can mesh with the fixed tooth ring 5. In this way, the linkage wheel set 142 rotating axially in the flipping control groove 102 will drive the laterally moving end plate 2 to rotate axially. It is worth mentioning that the tooth ratio between the gear of the linkage wheel set 142 meshing with the fixed tooth ring 5 and the fixed tooth ring 5 is such that when the end plate 2 moves from one side of the flipping control groove 102 to the other side along with the linkage rod 143, the linkage wheel set 142 can exactly drive the end plate 2 to flip by ninety degrees.

[0040] After the end plate 2 moves and flips, the connecting plate 3 will be in close contact with the supporting bracket 12. Both ends of the limiting groove 101 and the flipping control groove 102 have quasi-inlets, so that the linkage wheel sets 142 and linkage rods 143 extending from both ends of the connecting plate 3 can smoothly enter the flipping control groove 102 and the limiting groove 101. It can be understood that after the linkage wheel sets 142 and linkage rods 143 at one end of the connecting plate 3 reach the end of the flipping control groove 102, the just-placed linkage wheel sets 142 and linkage rods 143 in the flipping control groove 102 will be continuously pushed and axially rotated, so that the connecting plate 3 continues to move and flip, and the linkage wheel sets 142 and linkage rods 143 at the other end are lifted out of the flipping control groove 102 and the limiting groove 101 through the quasi-inlets until the end plate 2 originally in the position of the head cushion flips and moves above the supporting bracket 12. After that, the user re-locks the limiting component 13 to the end plate 2 originally in the position of the head cushion as the end plate 2 at the position of the seat after commutation, and flips and locks the end plate 2 originally in the position of the seat upright as the end plate 2 at the position of the head cushion, then the seat commutation can be completed.

[0041] Embodiment 3

[0042] Referring to Figures 1-6 , the difference between this embodiment and Embodiments 1 and 2 is that two sets of matching mechanisms 6 are received and installed in each side vertical frame 11. The matching mechanism 6 includes a distribution pipe 61, a piston connecting rod 62, a vertical moving rack 63, a resilient expansion arm 64 and a telescopic pull rod 65. A stepping hydraulic device 7 connected to the matching mechanism 6 can be installed in the side vertical frame 11. The stepping hydraulic device 7 includes a stepping vertical cylinder 71 and a hydraulic cylinder 72. The stepping vertical cylinder 71 is communicated with the hydraulic cylinder 72. When the user steps on the stepping vertical cylinder 71 downward, the hydraulic fluid in the hydraulic cylinder 72 will be squeezed into the distribution pipe 61 through the hydraulic transmission pipe 73, and then the hydraulic piston in the distribution pipe 61 is pushed to move. One end of the piston connecting rod 62 is connected to the hydraulic piston in the distribution pipe 61, and the other end is connected to the vertical moving rack 63. When the user repeatedly steps on the stepping vertical cylinder 71, the hydraulic fluid in the distribution pipe 61 will be repeatedly squeezed in and discharged, and then the hydraulic piston drives the piston connecting rod 62 to move up and down repeatedly.

[0043] The lower end of the vertical moving rack 63 is connected to the piston connecting rod 62 and can move up and down with the piston connecting rod 62. A horizontal moving propelling member 8 is installed outside the flipping control groove 102. The horizontal moving propelling member 8 includes two fixed toothed disks 81 and a spiral propelling member 82 connected to the fixed toothed disks 81 at both ends. The fixed toothed disk 81 can be in tooth engagement with the vertical moving rack 63 and is driven by the downward moving vertical moving rack 63 to axially rotate, and then the spiral propelling member 82 axially rotates. After the linkage rod 143 moves into the limiting groove 101, it will be between the spiral vanes of the spiral propelling member 82, and then is propelled to move when the spiral propelling member 82 rotates.

[0044] The upper end of the vertical moving rack 63 is rotationally connected to the rebound expansion arm 64. The upper end of the rebound expansion arm 64 is rotationally connected to the telescopic pull rod 65. The telescopic pull rod 65 can be pulled to perform lengthwise expansion and contraction. A coil spring tending to lift the rebound expansion arm 64 to a horizontal position is installed inside the rotating shaft connecting the upper end of the rebound expansion arm 64 and the telescopic pull rod 65. In this way, when the vertical moving rack 63 is pushed upward, the rebound expansion arm 64 will be preferentially pulled up by the coil spring, causing the vertical moving rack 63 to move away from the fixed gear disk 81, thereby avoiding driving the fixed gear disk 81 to rotate in the reverse direction. When the vertical moving rack 63 is pulled downward, the rebound expansion arm 64 will be pulled downward until the vertical moving rack 63 meshes with the fixed gear disk 81. After that, when the vertical moving rack 63 is continuously pulled downward, it can drive the fixed gear disk 81 to rotate axially.

[0045] The seat reversing structure is provided with two sets of matching mechanisms 6, a stepping hydraulic device 7, and a transverse moving propelling member 8, so that the user can drive the screw propelling member 82 to rotate in opposite directions by stepping on the stepping hydraulic device 7 at different positions, thereby driving the end plate 2 and the connecting plate 3 to perform reversing in two different directions.

[0046] Preferably, when multiple sets of seat reversing structures are arranged side by side, each set of seat reversing structures is provided with two sets of matching mechanisms 6 and is hydraulically connected to the hydraulic cylinder 72 connected to the stepping vertical cylinder 71 that is close to the vehicle aisle and convenient for the user to step on through an independent hydraulic pipeline 73, so that the user can drive multiple sets of seat reversing structures in the same row to complete reversing when stepping on one stepping vertical cylinder 71.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0048] In the present invention, unless otherwise clearly defined and limited, terms such as "arranged", "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The control method of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art, and the present invention is mainly used to protect mechanical devices. Therefore, the control method and circuit connection of the present invention will not be explained in detail.

[0050] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A two-way seat reversing structure for a rail vehicle, comprising a seat frame (1), an end plate (2) and a connecting plate (3), wherein the end plate (2) is provided with two ends respectively hingedly mounted on the connecting plate (3), characterized in that: The seat frame (1) comprises two side frames (11) and a support frame (12) installed between the two side frames (11); a limit assembly (13) is installed in the support frame (12); the upper parts of the two side frames (11) facing each other have a limit groove (101) and a flip adjustment groove (102); when the end plate (2) is bent to a 90-degree state with the connecting plate (3), the flip assembly (14) arranged on both sides of the end plate (2) facing the side frames (11) can extend into the limit groove (101) and the flip adjustment groove (102); The hinged connection between the end plate (2) and the connecting plate (3) comprises a hollow chamber (202), the flip assembly (14) is arranged in the hollow chamber (202), a locking member (4) is installed in the hollow chamber (202), and the end plate (2) is provided with a fixed tooth ring (5) installed on the outside; The flip assembly (14) comprises a transverse sleeve (141), a linkage wheel group (142) and a linkage rod (143); the transverse sleeve (141) is horizontally movably mounted in the hollow chamber (202) and is locked so as not to be axially rotated; rotating rods (144) inserted into the transverse sleeve (141) are mounted on both sides of the connecting plate (3); at least one short insertion rod is arranged outside the rotating rod (144); a threaded groove for inserting the short insertion rod is arranged on the inner wall of the transverse sleeve (141); one end of the linkage wheel group (142) and the linkage rod (143) is axially rotatably mounted on a side of the transverse sleeve (141) away from the connecting plate (3); The limiting groove (101) is used to limit the linkage rod (143) inserted therein so that it cannot rotate axially; one side of the flip regulating groove (102) is provided with teeth so as to be able to mesh with the linkage wheel set (142) inserted therein; both ends of the limiting groove (101) and the flip regulating groove (102) have access openings; and one end of the linkage wheel set (142) close to the connecting plate (3) is provided with a gear capable of meshing with a fixed tooth ring (5); The gear ratio of the gear meshing between the linkage wheel set (142) and the fixed toothed ring (5) and the fixed toothed ring (5) is such that when the end plate (2) moves from one side of the flipping regulating groove (102) to the other side along with the linkage rod (143), the linkage wheel set (142) can just drive the end plate (2) to flip ninety degrees; Two sets of matching mechanisms (6) are accommodated and installed in each of the side frames (11), and a treading hydraulic device (7) connected to the matching mechanism (6) can be installed in the side frames (11), and a transverse propulsion member (8) matching with the matching mechanism (6) is installed outside the flip control groove (102).

2. A rail vehicle bidirectional seat reversing structure according to claim 1, characterized in that: The end plate (2) has a limiting opening (201) on a side away from the passenger's body. The limiting assembly (13) comprises a hollow fixed cylinder (131), a passive lifting column (132) and a limiting plate (133). The hollow fixed cylinder (131) is fixedly installed in the support frame (12). The passive lifting column (132) is installed in the hollow fixed cylinder (131) so as to be movable up and down. The limiting plate (133) is fixedly installed on the upper end of the passive lifting column (132) extending out of the hollow fixed cylinder (131). The side wall of the hollow fixed cylinder (131) has a guide rail (103). The passive lifting column (132) has a limiting rod (134) on its outside inserted into the guide rail (103). The guide rail (103) has a vertical section and an oblique section.

3. A rail vehicle bidirectional seat reversing structure according to claim 2, characterized in that: The upper surface of the support frame (12) allows the limiting piece (133) to protrude upwards; when the end plate (2) moves to a specified position on the upper surface of the support frame (12), the limiting opening (201) can exactly correspond to the protruding opening of the limiting piece (133) on the upper surface of the support frame (12); the bottom opening of the limiting opening (201) just allows the limiting piece (133) to be inserted; and the upper portion of the limiting opening (201) has a space that allows the limiting piece (133) to rotate therein.

4. A rail vehicle bidirectional seat reversing structure according to claim 1, characterized in that: The matching mechanism (6) comprises a distribution pipe (61), a piston connecting rod (62), a vertically movable rack (63), a rebound extension arm (64) and a telescopic pull rod (65); the pedaling hydraulic device (7) comprises a pedaling vertical cylinder (71) and a hydraulic cylinder (72); the pedaling vertical cylinder (71) is connected to the hydraulic cylinder (72); when the pedaling vertical cylinder (71) is stepped on, the hydraulic fluid in the hydraulic cylinder (72) is squeezed into the distribution pipe (61) through the hydraulic delivery pipe (73), thereby pushing the hydraulic piston in the distribution pipe (61) to move.

5. A rail vehicle bidirectional seat reversing structure according to claim 4, characterized in that: One end of the piston connecting rod (62) is connected to the hydraulic piston in the distribution pipe (61), and the other end is connected to the vertical rack (63). The lower end of the vertical rack (63) is connected to the piston connecting rod (62) and can move up and down together with the piston connecting rod (62). The upper end of the vertical rack (63) is connected to the rotating shaft of the rebound arm (64). The upper end of the rebound arm (64) is connected to the rotating shaft of the telescopic pull rod (65). The telescopic pull rod (65) can be pulled to extend or retract its length. A coil spring tending to lift the rebound arm (64) is installed in the rotating shaft connected to the upper end of the rebound arm (64) and the telescopic pull rod (65).

6. A rail vehicle bidirectional seat reversing structure according to claim 1, characterized in that: The transverse moving propulsion member (8) comprises two fixed toothed discs (81) and a spiral propulsion member (82) connected to the fixed toothed discs (81) at both ends. The fixed toothed discs (81) can cooperate with the teeth of the vertical moving rack (63) and be driven by the vertical moving rack (63) moving downward to perform axial rotation. After the linkage rod (143) moves into the limiting groove (101), it will be located between the spiral plates of the spiral propulsion member (82).

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