Anti-rollover high-speed rail business seat chassis

By installing anti-tipping structures on both sides of the high-speed rail business class seat base and using rolling components to replace shear force, the problem of the rotating bracket being suspended in mid-air was solved, thus improving the stability of the seat.

CN224375583UActive Publication Date: 2026-06-19SHANDONG XINLONGSHENG RAIL TRANSIT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG XINLONGSHENG RAIL TRANSIT CO LTD
Filing Date
2025-07-08
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

When the passenger's center of gravity deviates from the center, the rotating support of the high-speed rail business class seat is prone to being suspended, resulting in excessive shear force, affecting the stability of the seat, and even causing lateral swaying.

Method used

Anti-rollover structures are installed on both sides of the seat base, including anti-rollover brackets and rolling components. The rolling components contact the suspended position of the rotating bracket to receive force, replacing the original shear force and increasing the stability of the seat.

Benefits of technology

It effectively prevents the seat from tipping over, improves the stability of the seat when the passenger's center of gravity shifts, and enhances the overall structural stability of the seat.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an anti-tipping high-speed rail business class seat base frame, relating to the field of high-speed rail seat technology. An anti-tipping high-speed rail business class seat base frame includes: a seat base, a rotating bracket, an anti-tipping structure, and a rotating component; the business class seat is fixed to the rotating bracket; the rotating bracket is connected to the seat base; the rotating bracket includes a lower plate, a vertical plate, and an upper plate; the bottom position of the first side of the lower plate is connected to the seat base via the rotating component; the upper plate is fixed to the lower plate via the vertical plate; the anti-tipping structure is fixed to the top of the seat base. This utility model designs an anti-tipping high-speed rail business class seat base frame. By adding an anti-tipping structure, even when the passenger's center of gravity shifts away from the seat center, the rolling component will directly contact the suspended position of the first side of the rotating bracket and bear the force. The force is changed from the shear force originally experienced by the rotating component and bolts to the pressure between the rolling component and the rotating bracket, greatly increasing the stability of the seat base frame.
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Description

Technical Field

[0001] This utility model relates to the field of high-speed rail seat technology, specifically to a high-speed rail business seat base frame that prevents tipping over. Background Technology

[0002] Currently, on the return journey of a high-speed train, there are situations where the direction of travel of the high-speed train is opposite to the direction of travel of the passengers. Usually, when the high-speed train is going out, passengers face the direction of travel, but if the seat direction remains the same on the return journey, passengers will be sitting with their backs to the direction of travel.

[0003] To avoid discomfort for passengers traveling in the opposite direction to the high-speed train's direction of travel, the business class seats need to be rotated to the opposite direction during the return journey to improve passenger comfort and experience. Therefore, business class seats on high-speed trains are generally equipped with a rotating function.

[0004] Figures 1-5 The image shows a two-seater business chair, comprising a seat base 100 and a rotating bracket 200 connected to the seat base 100 via a rotating component; the business chair is fixed to the rotating bracket 200. Due to limitations in the rotating structure and size, the rotating bracket 200 is designed to be relatively small; specifically, the first side 233 of the rotating bracket 200 in the two-seater business chair has a suspended support issue.

[0005] Meanwhile, when passengers sit in a reclining position in a business class seat, their center of gravity is likely to deviate from the center of the seat. In this case, the force that actually supports the weight of the seat and the passenger is mainly the rotating parts. The rotating parts and the bolts connecting the rotating parts will be subjected to a large shear force. This situation directly affects the stability of the seat and may even cause the seat to tilt and shake.

[0006] Therefore, the inventors believe that how to design a solution to the above problems is a technical problem that urgently needs to be solved by those skilled in the art.

[0007] 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

[0008] To address the aforementioned technical problems, this utility model provides a high-speed rail business class seat base frame that prevents tipping over, thereby solving the problems mentioned in the background section.

[0009] This utility model provides the following technical solution: a high-speed rail business seat base frame with anti-tipping capability, comprising: a seat base, a rotating bracket, an anti-tipping structure, and a rotating component; the business seat is fixed on the rotating bracket;

[0010] The rotating bracket is connected to the seat base; the rotating bracket includes a lower plate, a vertical plate and an upper plate; the bottom of the first side of the lower plate is connected to the seat base via a rotating component; the upper plate is fixed to the lower plate via the vertical plate;

[0011] The anti-rollover structure is fixed to the top of the seat base; the seat base is equipped with independent anti-rollover structures on both sides of the rotating component; the anti-rollover structure includes an anti-rollover bracket fixed to the seat base, and a rolling component that is rotatably connected to the anti-rollover bracket via a pivot.

[0012] After the external force controls the rotating bracket to rotate to the target position, the rolling component located on the same side of the second side of the lower plate will press down on the top surface of the second side of the lower plate.

[0013] Preferably, the rolling element is one of a roller, a bearing, or a bushing.

[0014] Preferably, the pivot is a bolt; the rolling component is connected to the smooth section of the bolt; the tail of the bolt passes through the anti-rollover bracket, and the tail of the bolt is connected to a nut to lock the bolt onto the anti-rollover bracket.

[0015] Preferably, the rotating component is either a bearing or a shaft.

[0016] Preferably, a guide slope is provided on the top surface of the second side of the lower plate.

[0017] Preferably, the seat base is provided with two independent anti-rollover structures on both sides of the rotating component.

[0018] Preferably, the anti-rollover bracket is L-shaped, and the base plate of the L-shaped anti-rollover bracket is fixedly connected to the seat base.

[0019] The anti-tipping high-speed rail business seat base frame provided by this utility model has the following beneficial effects: This utility model designs an anti-tipping high-speed rail business seat base frame by adding an anti-tipping structure; even when the passenger's center of gravity shifts from the center of the seat, the rolling component will directly contact the first side of the rotating bracket to bear the force, and the force is changed from the shear force on the original rotating component and bolts to the pressure between the rolling component and the rotating bracket, which greatly increases the stability of the seat base frame. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the present invention from the first angle;

[0021] Figure 2This is a structural schematic diagram of the present invention from a second angle;

[0022] Figure 3 This is a schematic diagram of the structure of this utility model after the rotating bracket has been removed;

[0023] Figure 4 This is a structural schematic diagram of the rotating bracket at the first angle in this utility model;

[0024] Figure 5 This is a structural schematic diagram of the second angle of the rotating bracket in this utility model;

[0025] Figure 6 This utility model Figure 2 A magnified view of part A in the image;

[0026] Figure 7 This utility model Figure 3 A magnified view of part B in the image. Detailed Implementation

[0027] 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.

[0028] See Figures 1-7 To address the problems mentioned in the background section, this utility model provides an anti-tipping high-speed rail business class seat base frame to solve the aforementioned technical problems. The technical solution is as follows:

[0029] A high-speed rail business class seat base frame with anti-tipping feature includes: a seat base 100, a rotating bracket 200, an anti-tipping structure 300, and a rotating component 400; the business class seat is fixed on the rotating bracket 200.

[0030] The rotating bracket 200 is connected to the seat base 100; the rotating bracket 200 includes a lower plate 210, a vertical plate 220 and an upper plate 230.

[0031] The bottom of the first side 212 of the lower plate 210 is rotated onto the seat base 100 via the rotating component 400; the upper plate 230 is fixed to the lower plate 210 via the upright plate 220; in this embodiment, the upright plate 220 includes two pieces;

[0032] The anti-rollover structure 300 is fixed to the top of the seat base 100; the seat base 100 is provided with independent anti-rollover structures 300 on both sides of the rotating component 400.

[0033] The anti-rollover structure 300 includes an anti-rollover bracket 310 fixed on the seat base 100, and a rolling component 330 rotatably connected to the anti-rollover bracket 310 via a pivot 320.

[0034] After the external force controls the rotating bracket 200 to rotate to the target position, the rolling component 330 located on the same side of the second side 211 of the lower plate 210 will press down on the top surface of the second side 211 of the lower plate 210.

[0035] When the staff controls the rotating bracket 200 to rotate to the target position, the rolling component 330 located on the same side as the second side 211 of the lower plate 210 of the rotating bracket 200 will roll onto the top surface of the second side 211 of the lower plate 210, limiting the suspended position of the first side 233 of the rotating bracket 200 in the double business chair.

[0036] When the passenger's center of gravity shifts away from the center of the seat, the rolling component 330 contacts the first side 233 of the rotating bracket 200 at the suspended position and is subjected to force. The force is changed from the shear force on the original rotating component and bolt to the pressure between the rolling component and the rotating bracket, which greatly increases the stability of the seat base.

[0037] It should be noted that the second side 232 of the rotating bracket 200 is not in a suspended position. The second side 232 of the rotating bracket 200 is connected to the seat base 100 by the rotating component 400.

[0038] In this embodiment, the rolling component 330 is one of a roller, a bearing, or a bushing.

[0039] In this embodiment, the rotating shaft 320 is a bolt; the rolling component 330 is connected to the smooth section of the bolt; the tail of the bolt passes through the anti-rollover bracket 310, and the tail of the bolt is connected to the nut 340 to lock the bolt onto the anti-rollover bracket 310.

[0040] In this embodiment, the rotating component 400 is either a bearing or a shaft. The selection of the rotating component 7 here is existing technology and can be chosen according to the specific circumstances.

[0041] In this embodiment, a guide slope 213 is provided on the top surface of the second side 211 of the lower plate 210; the guide slope 213 facilitates the rolling component 330 to roll onto the top surface of the second side 211 of the lower plate 210.

[0042] In this embodiment, the seat base 100 is provided with two independent anti-rollover structures 300 on both sides of the rotating component 400.

[0043] In this embodiment, the anti-rollover bracket 310 is L-shaped, and the bottom plate of the L-shaped anti-rollover bracket 310 is fixedly connected to the seat base 100.

[0044] The anti-tipping high-speed rail business seat base frame provided by this utility model has the following beneficial effects: This utility model designs an anti-tipping high-speed rail business seat base frame by adding an anti-tipping structure; even when the passenger's center of gravity shifts from the center of the seat, the rolling component will directly contact the first side of the rotating bracket to bear the force, and the force is changed from the shear force on the original rotating component and bolts to the pressure between the rolling component and the rotating bracket, which greatly increases the stability of the seat base frame.

[0045] The device embodiments described above are merely illustrative. The components described as separate parts may or may not be physically separate. The components shown as components may or may not be physical components; they may be located in one place or distributed across multiple network components. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0046] 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.

[0047] 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 rail business class seat base frame with anti-tipping feature, characterized in that, include: Seat base, rotating bracket, anti-tipping structure, and swivel components; the business chair is fixed to the rotating bracket; The rotating bracket is attached to the seat base; The rotating bracket includes a lower plate, a vertical plate, and an upper plate; the bottom of the first side of the lower plate is rotated onto the seat base via a rotating component; the upper plate is fixed to the lower plate via the vertical plate. The anti-rollover structure is fixed to the top of the seat base; the seat base is equipped with independent anti-rollover structures on both sides of the rotating component; the anti-rollover structure includes an anti-rollover bracket fixed to the seat base, and a rolling component that is rotatably connected to the anti-rollover bracket via a pivot. After the external force controls the rotating bracket to rotate to the target position, the rolling component located on the same side of the second side of the lower plate will press down on the top surface of the second side of the lower plate.

2. The anti-tipping high-speed rail business class seat base frame according to claim 1, characterized in that, A rolling element is one of a roller, bearing, or bushing.

3. The anti-tipping high-speed rail business class seat base frame according to claim 1, characterized in that, The pivot is a bolt; the rolling component is connected to the smooth section of the bolt; the tail of the bolt passes through the anti-rollover bracket, and the nut connected to the tail of the bolt locks the bolt onto the anti-rollover bracket.

4. The anti-tipping high-speed rail business class seat base frame according to claim 1, characterized in that, Rotating components are either bearings or shafts.

5. The anti-tipping high-speed rail business class seat base frame according to claim 1, characterized in that, A guide ramp is provided on the top surface of the second side of the lower plate.

6. The anti-tipping high-speed rail business class seat base frame according to claim 1, characterized in that, The seat base has two independent anti-rollover structures on both sides of the rotating component.

7. The anti-tipping high-speed rail business class seat base frame according to claim 1, characterized in that, The anti-rollover bracket is L-shaped, and the base plate of the L-shaped anti-rollover bracket is fixedly connected to the seat base.