Limiting small table plate for high-speed rail business seat

Abstract

The utility model discloses a small limiting table plate for a high-speed rail business seat, and relates to the technical field of train seats. A small limiting table plate for a high-speed rail business seat comprises a mounting support, a first table plate, a second table plate and an eccentric limiting unit. The second table plate is located above the first table plate and hinged to the first table plate, and the second table plate can be turned over relative to the first table plate; a main sliding rail groove and a secondary sliding rail groove are distributed in the bottom face of the first table board in parallel at intervals. The distribution direction of the main sliding rail groove and the auxiliary sliding rail groove is perpendicular to the overturning direction of the second table board. The eccentric limiting unit is matched with the secondary sliding rail groove, a dynamic limiting pair is formed between the first table plate and the installation support, the axial freedom degree is guaranteed, meanwhile, the radial offset of the first table plate is effectively restrained, the fit clearance between a sliding groove in the bottom face of the first table plate and a sliding block on the top face of the installation support is eliminated, and the service life of the table is prolonged. The movement stability of translation and sliding of the table plate is remarkably improved, and the abrasion loss of the sliding grooves and the sliding blocks in the later period is compensated.

Description

Technical Field

[0001] This utility model relates to the field of train seat technology, specifically to a limiting table for a high-speed rail business seat. Background Technology

[0002] In order to facilitate passengers' dining or placing other items, the business class seats in high-speed trains usually have a foldable table installed in the compartment inside the armrest. When using the foldable table, simply remove it from the armrest and unfold it.

[0003] Patent application number CN201821856183.7, entitled "A Folding Table for Business Seating and a Business Seat with the Folding Table," specifically discloses a folding table for business seating, including a mounting bracket, a first tabletop, a second tabletop, and an auxiliary handle. One end of the mounting bracket is rotatably connected to the business seat. A slider is provided on the top surface of the mounting bracket, and a groove is provided on the bottom surface of the first tabletop for sliding cooperation with the slider. The first tabletop is pivotally connected to the second tabletop via a pivot member, etc.

[0004] The folding table in the aforementioned patent can be pulled out from the armrest, allowing the first and second tabletops to be unfolded to increase the usable table area. Simultaneously, the first tabletop can be pulled horizontally along the slider of the mounting bracket to adjust the distance between the first and second tabletops and the passenger. However, the inventor believes that the aforementioned patent has at least the following technical problems:

[0005] (1) Due to issues such as component machining accuracy and table assembly, there will be a gap between the sliding groove on the bottom surface of the first table and the slider on the top surface of the mounting bracket. When the first table slides horizontally on the slider of the mounting bracket, there may be unstable movement.

[0006] (2) During the long-term use of the table, the sliding groove on the bottom surface of the first table and the slider on the top surface of the mounting bracket may wear out, which will increase the clearance between the sliding groove on the bottom surface of the first table and the slider on the top surface of the mounting bracket, further affecting the stability of the horizontal sliding of the first table.

[0007] Therefore, the inventors believe that how to design a solution to the above problems and improve the stability of the tabletop's horizontal sliding is a technical problem that urgently needs to be solved by those skilled in the art.

[0008] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model 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. Utility Model Content

[0009] To address the aforementioned technical problems, this utility model provides a limiting table for high-speed rail business seats, thereby resolving the issues raised in the background section.

[0010] This utility model provides the following technical solution: a limiting table for a high-speed rail business seat, comprising: a mounting bracket, a first table, a second table, and an eccentric limiting unit;

[0011] The second tabletop is located above the first tabletop and is hinged to the first tabletop. The second tabletop can be flipped relative to the first tabletop.

[0012] The bottom surface of the first table has main slide rails and secondary slide rails spaced parallel to each other; the distribution direction of the main slide rails and secondary slide rails is perpendicular to the flipping direction of the second table.

[0013] The top of the mounting bracket is fixed to a slider, and the first table is slidably connected to the slider on the mounting bracket through the main slide rail groove.

[0014] The eccentric limiting unit is connected through the first tabletop and its tail slides on the secondary slide rail groove. The contact distance between the tail of the eccentric limiting unit and the wall of the secondary slide rail groove can be adjusted by controlling the rotation of the eccentric limiting unit.

[0015] Preferably, the eccentric limiting unit includes a stud, an eccentric shaft fixed at a non-central position at the bottom of the stud, and a roller connected to the bottom of the eccentric shaft; the roller slides on the secondary slide rail groove; a through screw hole is provided on the first table plate, the eccentric limiting unit is disposed in the screw hole, and the stud on the eccentric limiting unit is threadedly connected to the screw hole.

[0016] Preferably, the first table is provided with a radial screw hole communicating with the screw hole, and one side opening of the radial screw hole extends to the outside of the first table; a screw for locking the eccentric limiting unit is connected in the radial screw hole.

[0017] Preferably, the top surface of the stud is provided with a spiral groove.

[0018] Preferably, the end of the mounting bracket furthest from the first tabletop is rotatably connected to a rotating seat.

[0019] Preferably, both the main slide rail groove and the secondary slide rail groove are provided in two sets. Each set of main slide rail grooves has a slider that slides in conjunction with it, and each set of secondary slide rail grooves has an eccentric limiting unit that slides in conjunction with it.

[0020] Preferably, a tabletop flipping limit block is fixed at the bottom of the first tabletop at the hinge position with the second tabletop.

[0021] Preferably, the side of the first tabletop is fixed with a pull strap.

[0022] The present invention provides a limiting table for a high-speed rail business seat, which has the following beneficial effects: The present invention designs a limiting table for a high-speed rail business seat. Through the cooperation of the eccentric limiting unit and the secondary slide rail groove, a dynamic limiting pair is formed between the first table and the mounting bracket. While ensuring axial freedom, it effectively constrains the radial offset of the first table, which is used to eliminate the fitting gap between the bottom slide groove of the first table and the top slider of the mounting bracket, significantly improving the motion stability of the table's translation and sliding, and compensating for the wear of the slide groove and slider in the later stage. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the present invention from the first angle;

[0024] Figure 2 This is a structural schematic diagram of the present invention from a second angle;

[0025] Figure 3 This is a structural schematic diagram of the present invention from a third angle;

[0026] Figure 4 This is a schematic diagram of the structure of this utility model after the mounting bracket has been removed;

[0027] Figure 5 This is a schematic diagram of the connection between the mounting bracket and the rotating seat in this utility model;

[0028] Figure 6 This is a schematic diagram of the eccentric limiting unit in this utility model;

[0029] Figure 7 This utility model Figure 3 A magnified view of part A in the image;

[0030] Figure 8 This utility model Figure 4 A magnified view of part B in the image;

[0031] Figure 9 This utility model Figure 5 A magnified view of part C. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] See Figures 1-9To address the problems mentioned in the background section, this utility model provides a limiting table for high-speed rail business class seats to solve the aforementioned technical problems. The technical solution is as follows:

[0034] A limiting table for a high-speed rail business seat includes: a mounting bracket 200, a second table 400, a first table 300, and an eccentric limiting unit 700;

[0035] The second tabletop 400 is located above the first tabletop 300 and is hinged to the first tabletop 300. The second tabletop 400 can be flipped relative to the first tabletop 300.

[0036] The bottom surface of the first tabletop 300 has main slide rail grooves 310 and secondary slide rail grooves 320 distributed at intervals in parallel; the distribution direction of the main slide rail grooves 310 and secondary slide rail grooves 320 is perpendicular to the flipping direction of the second tabletop 400.

[0037] The top surface of the mounting bracket 200 is fixedly connected to the slider 210, and the first table plate 300 is slidably connected to the slider 210 on the mounting bracket 200 through the main slide rail groove 310 at the bottom; the mounting bracket 200 is plate-shaped.

[0038] The eccentric limiting unit 700 is connected through the first table 300 and its tail slides on the secondary slide rail groove 320. By rotating the installation angle of the eccentric limiting unit 700 on the first table 300, the contact distance between the tail of the eccentric limiting unit 700 and the groove wall of the secondary slide rail groove 320 can be controlled.

[0039] The aforementioned eccentric limiting unit 700 and secondary slide rail groove 320, while ensuring axial freedom, effectively constrain the radial offset of the first table 300, thereby eliminating the gap between the main slide rail groove 310 on the bottom surface of the first table 300 and the slider 210 on the top surface of the mounting bracket 200, significantly improving the motion stability of the table's translational sliding.

[0040] In this embodiment, the eccentric limiting unit 700 includes a stud 710, an eccentric shaft 720 fixed at the non-central position of the bottom of the stud 710, and a roller 730 connected to the bottom of the eccentric shaft 720; the roller 730 is limited to be attached to the secondary slide rail groove 320.

[0041] The first tabletop 300 is provided with a screw hole 230, the eccentric limiting unit 700 is provided in the screw hole 230, and the stud 710 on the eccentric limiting unit 700 is threadedly connected to the screw hole 230.

[0042] The roller 730 in the eccentric limiting unit 700 and the secondary slide rail groove 320 form a dynamic limiting pair. By rotating the connection position of the stud 710 on the screw hole 230, the radial position of the roller 730 can be finely adjusted. By adjusting the contact distance between the roller 730 and the groove wall of the secondary slide rail groove 320, the fitting gap between the main slide rail groove 310 and the slider 210 can be precisely eliminated.

[0043] In this embodiment, the first tabletop 300 is provided with a radial screw hole 240 communicating with the screw hole 230, and one side opening of the radial screw hole 240 extends to the outside of the first tabletop 300; a screw 220 is connected in the radial screw hole 240 to lock the eccentric limiting unit 700.

[0044] When it is necessary to rotate the stud 710, loosen the screw 220 in advance; after the stud 710 is adjusted, tighten the screw 220 again and control the tail of the screw 220 to press against the side wall of the stud 710 to lock and fix the eccentric limiting unit 700.

[0045] In this embodiment, the top surface of the stud 710 is provided with a spiral groove 711; the shape of the spiral groove 711 can be a slotted groove, a cross groove, a Torx groove, or an internal hexagonal groove, etc. The spiral groove 711 facilitates the rotation of the stud 710 with the help of tools.

[0046] In this embodiment, a rotating seat 100 is rotatably connected to the end of the mounting bracket 200 away from the first table 300; in actual assembly, the rotating seat 100 is rotatably connected to the receiving chamber inside the armrest, and the limiting small table is installed inside the armrest.

[0047] In this embodiment, two sets of main slide rail grooves 310 and secondary slide rail grooves 320 are provided. A slider 210 is slidably mounted on each set of main slide rail grooves 310, and an eccentric limiting unit 700 is slidably mounted on each set of secondary slide rail grooves 320.

[0048] In this embodiment, a tabletop flipping limiting block 600 is fixed at the bottom of the first tabletop 300 at the hinge position with the second tabletop 400; after the second tabletop 400 flips relative to the first tabletop 300, it can be limited on the tabletop flipping limiting block 600, thereby improving the stability of the second tabletop 400 when unfolded.

[0049] In this embodiment, a pull strap 500 is fixed to the side of the first table board 300; the pull strap 500 facilitates the removal of the limiting small table board from inside the armrest.

[0050] The present invention provides a limiting table for a high-speed rail business seat, which has the following beneficial effects: The present invention designs a limiting table for a high-speed rail business seat. Through the cooperation of the eccentric limiting unit and the secondary slide rail groove, a dynamic limiting pair is formed between the first table and the mounting bracket. While ensuring axial freedom, it effectively constrains the radial offset of the first table, which is used to eliminate the fitting gap between the bottom slide groove of the first table and the top slider of the mounting bracket, significantly improving the motion stability of the table's translation and sliding, and compensating for the wear of the slide groove and slider in the later stage.

[0051] 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.

[0052] In this utility model, 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 utility model according to the specific circumstances.

[0053] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims.

Claims

1. A high-speed business seat limiting small table board, characterized in that, The utility model relates to a dining table with a first table board, a second table board and an eccentric limiting unit, and the first table board is connected with the second table board through a hinge. The second table board is located above the first table board and is connected with the first table board through a hinge, and the second table board can be flipped relative to the first table board. The bottom surface of the first table board is provided with a main slide rail groove and a secondary slide rail groove in parallel and at intervals, and the distribution direction of the main slide rail groove and the secondary slide rail groove is perpendicular to the flipping direction of the second table board. The top of the mounting bracket is fixedly connected with a sliding block, and the first table board is connected with the sliding block on the mounting bracket through the main slide rail groove. The eccentric limiting unit is connected with the first table board and is limited to slide on the secondary slide rail groove at the tail thereof, and the contact distance between the tail of the eccentric limiting unit and the groove wall of the secondary slide rail groove can be adjusted by rotating the eccentric limiting unit. The eccentric limiting unit comprises a stud, an eccentric shaft fixed at a non-central position on the bottom of the stud, and a roller connected with the bottom of the eccentric shaft, and the roller is limited to slide on the secondary slide rail groove.

2. The high-speed business seat limit small table board according to claim 1, wherein, A through hole is arranged on the first table board, the eccentric limiting unit is arranged in the through hole, and the stud on the eccentric limiting unit is screwed with the through hole.

3. The high-speed business seat with a limited desk board according to claim 2, characterized in that, A radial through hole is arranged on the first table board and is in communication with the through hole, and the radial through hole is open on one side and extends to the outside of the first table board.

4. The high-speed business seat with a limited desk board according to claim 2, wherein, A screw is connected in the radial through hole and is used for locking the eccentric limiting unit.

5. The high-speed business seat with a limited desk board according to claim 1, wherein, A screw groove is arranged on the top surface of the stud.

6. The high-speed business seat with a limited desk board according to claim 1, wherein, A rotating seat is rotatably connected with the end of the mounting bracket away from the first table board.

7. The high-speed business seat with a limited desk board according to claim 1, wherein, Each of the main slide rail groove and the secondary slide rail groove is provided with two groups, each group of the main slide rail groove is matched with a sliding block, and each group of the secondary slide rail groove is matched with an eccentric limiting unit.

8. The high-speed business seat with a limited desk board according to claim 1, wherein, A dining table board flipping limiting block is fixedly arranged on the bottom of the first table board at the hinge position of the second table board. A drawstring is fixed on the side of the first table board.

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