Rotating base frame for train seats

Abstract

The utility model provides a rotating base frame for train seat, including bottom shell and seat carrier, the bottom of seat carrier is connected with bottom shell through rotating shaft, resistance reduction subassembly, resistance reduction subassembly is used for reducing the friction resistance between seat carrier and bottom shell when rotating, drive assembly, drive assembly is used for driving rotating shaft rotation, the utility model relates to rotating base frame technical field, change the orientation of seat through the rotation of seat carrier, when seat carrier rotates, the bottom of seat carrier moves along the top of the ball in the ball socket structure, the contact area between the bottom of seat carrier and ball is small, and the ball and cylinder are in rolling friction, and then reduce the friction resistance when seat carrier rotates, improve the fluency when seat carrier conversion.

Description

Technical Field

[0001] This utility model relates to the field of rotating base frame technology, and in particular to a rotating base frame for train seats. Background Technology

[0002] The rotating base mainly includes a base for connecting with the train, a seat support frame for installing seats, and a rotating shaft for mounting the base and the seat support frame. The bottom end of the rotating shaft is connected to the base through a bearing, and the top end of the rotating shaft is fixedly connected to the center position of the seat support frame. The rotating shaft drives the seat support frame to rotate, so that the direction of the seat above the seat support frame is consistent with the direction of the train's travel. The seat support frame and the base shell are in planar contact, and the friction between the contact surfaces affects the smoothness of the seat when changing direction. Utility Model Content

[0003] The purpose of this invention is to provide a rotating base frame for train seats, which solves the problem that the friction between the existing seat support frame and the bottom shell, which are in planar contact, affects the smoothness of seat reversal.

[0004] This utility model provides a rotating base frame for train seats, including a bottom shell and a seat support frame. The bottom end of the seat support frame is connected to the bottom shell via a rotating shaft. A drag-reducing component is provided to reduce the frictional resistance between the seat support frame and the bottom shell when the seat support frame rotates. A driving component is provided to drive the rotating shaft to rotate. The drag reduction component includes: A disc plate, the central hole of which is rotatably connected to the rotating shaft, and the disc plate is connected to the bottom shell via a connector; Multiple cylindrical tubes are evenly distributed based on the disc plate, and the top of each cylindrical tube forms a spherical cavity structure. A sphere, wherein the sphere is partially embedded in the spherical cavity structure, and the opening diameter of the spherical cavity structure is smaller than the diameter of the sphere, the sphere can rotate in multiple directions relative to the cylindrical tube, and the axial displacement is restricted by the spherical cavity structure; The outer periphery of the sphere abuts against the bottom surface of the seat support frame.

[0005] Preferably, the driving component includes: A gear disk, the central hole of which is connected to the rotating shaft, and the gear disk is arranged parallel to the bottom of the disc plate; Two telescopic components are provided, each with a rack at its output end. The rack meshes with the gear disk, and the end of the telescopic component away from the rack is connected to the bottom shell.

[0006] Preferably, the rack is provided with limit plates at both ends.

[0007] Preferably, the telescopic component is an electric push rod.

[0008] Preferably, the rack is symmetrically distributed based on the gear disk.

[0009] Preferably, the connector includes: Two threaded sleeves, the two threaded sleeves being symmetrically distributed based on the disc plate; A fixing bolt, which passes through the bottom shell and connects to the threaded sleeve.

[0010] Preferably, the outer periphery of the bottom shell is symmetrically machined with multiple square grooves, and each of the multiple square grooves is equipped with a socket.

[0011] Preferably, the top of the seat support frame is equipped with multiple mounting tubes, and the top of each of the multiple mounting tubes is machined with a mounting groove.

[0012] This utility model provides a rotating base frame for train seats: Through the coordinated use of the bottom shell, seat support frame, rotating shaft, disc plate, connector, cylindrical tube, ball socket structure, and sphere, the rotating shaft rotates within the bottom shell and disc plate, causing the top of the rotating shaft to rotate and thus changing the orientation of the seat. As the seat support frame rotates, its bottom end moves along the top of the sphere in the ball socket structure. The contact area between the bottom end of the seat support frame and the sphere is small, and there is rolling friction between the sphere and the cylindrical tube, thereby reducing the frictional resistance when the seat support frame rotates and improving the smoothness of the seat support frame's transition. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the disc plate, connector, cylindrical tube, ball socket structure, and sphere in this utility model; Figure 3 This is a structural schematic diagram of the gear disk, telescopic component, rack, and limiting plate in this utility model; Figure 4 This is a structural diagram of the bottom shell, square groove, and socket in this utility model; Figure 5 This is an assembly drawing of the bottom shell and seat support frame of this utility model; Figure 6 This is a schematic diagram of the disc plate installed in the bottom shell in this utility model.

[0015] Explanation of reference numerals in the attached figures: 1-Bottom shell, 11-Square groove, 11a-Socket, 2-Seat support frame, 21-Mounting tube, 21a-Mounting slide, 3-Rotating shaft, 4-Drag reduction assembly, 41-Disc plate, 411-Connector, 411a-Threaded sleeve, 411b-Fixing bolt, 42-Cylindrical tube, 421-Spherical socket structure, 43-Sphere, 5-Drive assembly, 51-Gear disk, 52-Telescopic component, 521-Rack, 521a-Limiting plate. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In this embodiment, as Figure 1 and Figure 2 As shown, the rotating base frame for train seats includes a bottom shell 1 and a seat support frame 2. The bottom end of the seat support frame 2 is connected to the bottom shell 1 via a rotating shaft 3. A drag-reducing component 4 is used to reduce the frictional resistance between the seat support frame 2 and the bottom shell 1 when rotating. A drive component 5 is used to drive the rotating shaft 3 to rotate. The drag-reducing component 4 includes: a disc plate 41, the central hole of which is rotatably connected to the rotating shaft 3, and the disc plate 41 being connected to the bottom shell 1 via a connector 411; multiple cylindrical tubes 42, which are evenly distributed based on the disc plate 41, with the top of each cylindrical tube forming a spherical cavity structure 421; a sphere 43, which is partially embedded in the spherical cavity structure 421, and the opening diameter of the spherical cavity structure 421 is smaller than the diameter of the sphere 43. The sphere 43 can rotate in multiple directions relative to the cylindrical tubes 42, and its axial displacement is restricted by the spherical cavity structure 421; the outer periphery of the sphere 43 abuts against the bottom surface of the seat support frame 2.

[0020] Therefore, when the rotating shaft 3 rotates in the bottom shell 1 and the disc plate 41, the top of the rotating shaft 3 drives the seat support frame 2 to rotate. By rotating the seat support frame 2, the orientation of the seat is changed. When the seat support frame 2 rotates, the bottom end of the seat support frame 2 moves along the top of the ball 43 in the ball socket structure 421. The ball 43 and the cylindrical tube 42 have rolling friction, which improves the smoothness of the seat support frame 2 when it is switched.

[0021] Specifically, a slot adapted to the disc plate 41 is machined on the top of the bottom shell 1. The bottom end of the rotating shaft 3 is connected to the bottom shell 1 through a bearing. The top end of the rotating shaft 3 is fixedly connected to the seat support frame 2. The outer circumferential arc of the rotating shaft 3 is adapted to the arc of the top groove of the bottom shell 1. The ball socket structure 421 at the top of the cylindrical tube 42 is used to store the ball 43. The ball 43 can rotate in the ball socket structure 421. It should be noted that the bottom end of the rotating shaft 3 is connected to the bottom shell 1 through a bearing, and the upper middle part of the rotating shaft 3 is connected to the disc plate 41 through a bearing. The design of double bearing is adopted. When the seat support frame 2 is subjected to eccentric load, the non-uniform contact stress between the inner and outer rings of the bearing is reduced, and the local wear of the bearing is reduced.

[0022] In some embodiments, such as Figure 3 and Figure 4 As shown, the drive assembly 5 includes: a gear disk 51, the central hole of the gear disk 51 is connected to the rotating shaft 3, the gear disk 51 is arranged parallel to the bottom of the disc plate 41; two telescopic members 52, the output ends of the two telescopic members 52 are equipped with racks 521, the racks 521 are meshed with the gear disk 51, and the end of the telescopic member 52 away from the racks 521 is connected to the bottom shell 1.

[0023] Specifically, the gear disk 51 is used to drive the rotating shaft 3 to rotate, the drive component 5 is located in the cavity of the bottom shell 1, and the design of the two telescopic parts 52 is used to improve the stability of power transmission between the rack 521 and the gear disk 51. The design of the rack 521 and the gear disk 51 has a self-locking effect. It should be noted that adjusting the direction of existing train seats often requires manual operation by the train attendant. For example, in second-class carriages with 17 to 20 rows of seats, adjusting each seat individually is a labor-intensive and inefficient process. Using the telescopic component 52 to provide power makes the adjustment faster and more efficient.

[0024] In some embodiments, such as Figure 3 As shown, limit plates 521a are provided at both ends of the rack 521; Specifically, the limiting plate 521a prevents the rack 521 from extending or retracting excessively. In addition, the limiting plate 521a can also be equipped with a position sensor to better determine the moving length of the rack 521.

[0025] In some embodiments, such as Figure 4 As shown, telescopic component 52 is an electric push rod.

[0026] Specifically, the telescopic component 52 adopts an electric push rod design, which facilitates connection with the train's power system. The extension length of the electric push rod output end can be controlled by the PLC (Variable Logic Controller) in the train's power system. The extension length of the electric push rod output end controlled by the PLC matches the 180° rotation of the gear disk 51, so as to achieve the function of changing the direction of the seat support frame 2. (In actual use, an error of 1° to 5° after the seat support frame 2 rotates is allowed. Within this error range, it will not affect the passenger's riding experience.)

[0027] In some embodiments, such as Figure 3 As shown, the rack 521 is symmetrically distributed based on the gear disk 51; Specifically, the two racks 521 are designed to drive the gear disk 51 to rotate in opposite directions, thereby increasing the stability of the gear disk 51 during rotation.

[0028] In some embodiments, such as Figure 2 As shown, the connector 411 includes: two threaded sleeves 411a, which are symmetrically distributed based on the disc plate 41; and a fixing bolt 411b, which passes through the bottom shell 1 and connects to the threaded sleeves 411a. Specifically, threaded sleeves 411a are symmetrically distributed on the outer periphery of the disc plate 41, and fixing bolts 411b connect the bottom shell 1 to the threaded sleeves 411a to fix the position of the disc plate 41 in the bottom shell 1. In addition, other connection methods can be used between the disc plate 41 and the bottom shell 1.

[0029] In some embodiments, such as Figure 6 As shown, the outer periphery of the bottom shell 1 is symmetrically machined with multiple square grooves 11, and each of the multiple square grooves 11 is equipped with a socket 11a; Specifically, there are four square slots 11. The square slots 11 are used to install sockets 11a. The sockets 11a are located on both sides of the bottom shell 1 and are not associated with the rotating seat support frame 2, which facilitates direct wiring of the sockets 11a.

[0030] In some embodiments, such as Figure 5 As shown, multiple mounting tubes 21 are installed at the top of the seat support frame 2, and each of the mounting tubes 21 has a mounting groove 21a machined at its top.

[0031] Specifically, there are four mounting tubes 21, with each pair of mounting tubes 21 forming a group. The mounting tubes 21 are connected to the external fasteners and the external seat via mounting grooves 21a.

[0032] The working principle of this application is illustrated below with a preferred embodiment: When the telescopic component 52 is activated by an external power source, the output end of the telescopic component 52 drives the rack 521 to move laterally, which in turn drives the gear disk 51 to rotate. The gear disk 51 drives the rotating shaft 3 to rotate in the bottom shell 1 and the disc plate 41 through the bearings, which in turn causes the seat support frame 2 located at the top of the rotating shaft 3 to rotate. By rotating the seat support frame 2, the orientation of the seat can be changed. When the seat support frame 2 rotates, the bottom end of the seat support frame 2 moves along the top end of the ball 43 in the ball socket structure 421. The contact area between the bottom end of the seat support frame 2 and the ball 43 is small, and the ball 43 and the cylindrical tube 42 exhibit rolling friction, thereby reducing the frictional resistance when the seat support frame 2 rotates.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rotating base frame for train seats, comprising a base shell (1) and a seat support frame (2), wherein the bottom end of the seat support frame (2) is connected to the base shell (1) via a rotating shaft (3), characterized in that, The drag reduction component (4) is used to reduce the frictional resistance between the seat support frame (2) and the bottom shell (1) when the seat support frame (2) rotates; Drive component (5), which is used to drive the rotating shaft (3) to rotate; The drag-reducing component (4) includes: The disc plate (41) has a central hole that is rotatably connected to the rotating shaft (3), and the disc plate (41) is connected to the bottom shell (1) through a connector (411). Multiple cylindrical tubes (42) are evenly distributed based on the disc plate (41), and the top of each cylindrical tube (42) forms a ball-and-socket structure (421). A sphere (43) is partially embedded in the spherical cavity structure (421), and the opening diameter of the spherical cavity structure (421) is smaller than the diameter of the sphere (43). The sphere (43) can rotate in multiple directions relative to the cylindrical tube (42), and the axial displacement is restricted by the spherical cavity structure (421). The outer periphery of the sphere (43) abuts against the bottom surface of the seat support frame (2).

2. The swivel base for a train seat according to claim 1, wherein The driving component (5) includes: Gear disk (51), the central hole of the gear disk (51) is connected to the rotating shaft (3), and the gear disk (51) is arranged parallel to the bottom of the disc plate (41); Two telescopic components (52) are provided with racks (521) at their output ends. The racks (521) are meshed with the gear disk (51). The end of the telescopic component (52) away from the racks (521) is connected to the bottom shell (1).

3. A swivel base for a train seat according to claim 2, wherein, Limiting plates (521a) are provided at both ends of the rack (521).

4. The swivel base for a train seat of claim 2, wherein, The telescopic component (52) is an electric push rod.

5. The swivel base for a train seat of claim 2, wherein, The rack (521) is symmetrically distributed based on the gear disk (51).

6. The swivel base for a train seat of claim 1, wherein, The connector (411) includes: Two threaded sleeves (411a) are symmetrically distributed based on the disc plate (41); A fixing bolt (411b) is inserted through the bottom shell (1) and connected to the threaded sleeve (411a).

7. The swivel base for a train seat of claim 1, wherein, The outer periphery of the bottom shell (1) is symmetrically machined with multiple square grooves (11), and each of the multiple square grooves (11) is equipped with a socket (11a).

8. The swivel base for a train seat of claim 1, wherein, The top of the seat support frame (2) is equipped with a plurality of mounting tubes (21), and the top of each plurality of mounting tubes (21) is machined with a mounting groove (21a).

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