Novel handrail of passenger train seat
By designing detachable armrest supports and anti-tipping roller structures, the problem of unstable rotation of railway passenger car seat backs at extremely large angles was solved, achieving both stability and lightweight design, thus meeting passenger needs.
Patent Information
- Application Number
- CN202520978568.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-05-19
AI Technical Summary
The non-removable structure between the armrests and backrests of existing railway passenger car seats restricts the backrests from rotating at extremely large angles, causing the seats to become unstable when tilted at extremely large angles, and increasing the weight and production cost of the seats.
A quick-install and removable armrest support structure was designed, which, combined with anti-tipping rollers and limiting grooves, allows the backrest to rotate at an ultra-large angle and adjusts the backrest angle via a button switch, ensuring seat stability while reducing weight and cost.
It achieves stability with an ultra-large angle of backrest rotation, reduces seat weight and production costs, and meets passengers' needs for comfort and economy.
Smart Images
Figure CN223864854U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an armrest for a railway passenger car seat, belonging to the field of rail transit technology. Background Technology
[0002] As passengers' demands for seat comfort increase, the requirements for seat comfort, economy, and aesthetics are also growing. Besides traditional passenger seats, the demand for seats in freight trains and other special-purpose vehicles is also increasing, with more diverse requirements: There is a need for backrests to rotate and tilt at a large angle, but the non-removable connection between the armrests and backrests limits the angle of rotation, preventing the armrests from rotating and tilting at the same angle. Furthermore, if the connection structure between the armrests and backrests is modified, it must ensure the stability of the rotating seat and prevent it from tipping over. Currently, to ensure the economic and environmental protection of train operations and to increase load-bearing capacity, the weight requirements for seats are very strict, requiring minimal weight reduction. To meet the requirement of large-angle rearward tilting, it is also necessary to avoid complex seat structures and increased weight costs. Utility Model Content
[0003] The purpose of this utility model is to provide a new type of armrest for railway passenger car seats, which provides support for the passenger's forearm and provides a button switch for adjusting the seat back. The armrest support is equipped with a quick-installation and disassembly interface, which can accommodate the large-angle rearward rotation and tilt of the backrest and ensure the stability of the rotating seat without tipping over. It also has a seat rotation reversal locking function to meet the functional requirements of seat back angle adjustment. The structure is simple and reliable, reduces seat weight, and has a low production cost, thus solving the above-mentioned technical problems existing in the prior art.
[0004] The technical solution of this utility model is:
[0005] A novel armrest for railway passenger car seats is installed on the backrest and seat side of the passenger car seat. It includes an armrest support, a seat back mounting interface, anti-tipping rollers, armrest mounting posts, gas spring mounting holes, and a limiting groove. The armrest support has a C-shaped structure, consisting of an upper armrest, a support surface, and a lower armrest. The inner side of the support surface has a seat back mounting interface, the inner front end of the lower armrest has an armrest mounting post, and the inner middle of the lower armrest has a limiting groove. The armrest support and seat back... The mounting interface, armrest mounting posts, limiting grooves, and gas spring mounting holes are integrally formed using die casting technology, forming a single component. A backrest pivot is located on the side of the backrest, and the seat backrest mounting interface is connected to the backrest pivot via a convex-concave fit. A limiting roller is located in the middle of the side of the seat, and the limiting roller is fitted within a limiting groove. Anti-tipping rollers are mounted on the inner side of the bottom surface of the armrest using eccentric bolts. An anti-tipping pressure plate is located on the side of the seat, and anti-tipping rollers are installed on the underside of the anti-tipping pressure plate. When the seat back needs to be tilted back at a large angle, first rotate the backrest to its limit, then quickly detach the armrest support from the backrest and seat. Continue rotating the backrest backward, then quickly connect the armrest support to the seat, aligning the limiting rollers with the limiting grooves. Install the anti-tipping rollers, aligning them with the underside of the anti-tipping pressure plate. At this point, the seat back mounting interface and the backrest pivot are not engaged. Because the armrest support is no longer restraining the seat, the backrest can tilt back at a large angle. The limiting rollers and anti-tipping rollers ensure the seat remains stable and does not tip over. When you need to return the seat to normal use, remove the armrest support again, reset the backrest, and connect the seat back mounting interface to the backrest pivot, restoring the limitation on the backward tilt angle.
[0006] Furthermore, the front end of the armrest supported by the armrest is provided with an adjustment button with a button return spring, and is connected to the gas spring of the seat via a backrest adjustment zipper; the front end of the backrest adjustment zipper is connected to the adjustment button, and the rear end is connected to the gas spring of the seat. The backrest angle can be adjusted by pressing the adjustment button to open the gas spring via the adjustment zipper, and the button return spring can return the adjustment button to its initial position.
[0007] Furthermore, the seat back mounting interface has a concave structure, and the backrest pivot is flat and waist-shaped, and they are connected by plugging.
[0008] Furthermore, a guide plane is provided at the bottom of the armrest, and the guide plane is directed toward the limiting groove; when the seat rotates counterclockwise, the limiting roller will slide to the inside of the limiting groove through the guide plane to lock the seat seating direction; the limiting roller is fixed.
[0009] Furthermore, the anti-tipping roller is installed on the armrest support by an eccentric bolt. When the seat is reversed, the anti-tipping roller rotates counterclockwise with the armrest support. When the anti-tipping roller slides to the underside of the anti-tipping pressure plate, it prevents the upper rotating part of the seat from tipping backward when the seat is in use.
[0010] The advantages of this invention are: it provides support for the passenger's forearm and a button switch for adjusting the seat back; the armrest support is equipped with a quick-installation and disassembly interface; it can accommodate a large angle of rearward rotation and tilting of the backrest while ensuring the stability of the rotating seat without tipping over; it also has a seat rotation reversal locking function to meet the functional requirements of adjusting the seat back angle; the structure is simple and reliable, reduces the weight of the seat, and has a low production cost. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0012] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present utility model;
[0013] Figure 3 This is a frontal schematic diagram of the handrail support in an embodiment of the present utility model;
[0014] Figure 4 This is a rearward schematic diagram of the handrail support in an embodiment of the present utility model;
[0015] Figure 5 This is a left-side view of the handrail support in an embodiment of the present utility model;
[0016] Figure 6 This is a bottom view of the handrail support according to an embodiment of the present utility model;
[0017] Figure 7 This is a bottom-view perspective view of an embodiment of the present invention;
[0018] Figure 8 This is a top view schematic diagram of an embodiment of the present utility model;
[0019] In the diagram: 1. Armrest support; 2. Adjustment button; 3. Armrest cover; 4. Seat back mounting interface; 5. Backrest pivot; 6. Anti-tipping roller; 7. Gas spring assembly; 8. Rotation limit device; 9. Anti-tipping pressure plate; 10. Armrest mounting post; 11. Limiting roller; 12. Limiting groove; 13. Limiting rubber block; 14. Button return spring; 15. Backrest adjustment zipper; 16. Gas spring mounting hole; 17. Eccentric bolt; 18. Guide plane; 19. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0021] A novel armrest for railway passenger car seats is installed on the backrest 6 and seat side of the rail passenger car seat. It includes an armrest support 1, a seat back mounting interface 4, anti-tipping rollers 7, armrest mounting posts 11, gas spring mounting holes 17, and a limiting groove 13. The armrest support 1 has a C-shaped structure, consisting of an upper armrest, a support surface, and a bottom armrest. The inner side of the support surface has the seat back mounting interface 4. Armrest mounting posts 11 are provided on the inner sides of the front and rear ends of the bottom armrest, and are inserted into the insertion interfaces on the bottom surface. A limiting groove 13 is provided on the inner side of the middle of the bottom armrest. The seat back mounting interface 4, armrest mounting column 11, limiting groove 13, and gas spring mounting hole 17 are integrally formed by die casting and are a single component. The side of the backrest 6 is provided with a backrest pivot 5, and the seat back mounting interface 4 and the backrest pivot 5 are connected by a convex-concave fit. The middle part of the side of the seat surface is provided with a limiting roller 12, which is matched in the limiting groove 13. The inner sides of the front and rear ends of the bottom surface of the armrest are equipped with anti-tipping rollers 7 by eccentric bolts 18. The side of the seat surface is provided with an anti-tipping pressure plate 10, and the anti-tipping rollers 7 are installed on the underside of the anti-tipping pressure plate 10. When the seat back needs to be tilted back at a large angle, first rotate the backrest to its limit, then quickly remove the armrest support 1 from the backrest 6 and the seat. Continue rotating the backrest 6 backward, then quickly insert the armrest support 1 into the seat. The limiting roller 12 is matched within the limiting groove 13, and the anti-tipping roller 7 is matched to the underside of the anti-tipping pressure plate 10. At this time, the seat back mounting interface 4 and the backrest pivot 5 are not engaged. Because the armrest support 1 is no longer restraining the seat, the backrest can tilt back at a large angle. The limiting roller 12 and the anti-tipping roller 7 ensure the seat remains stable and does not tip over. When it is necessary to restore normal seat use, remove the armrest support 1 again, reset the backrest 6, and insert the seat back mounting interface 4 into the backrest pivot 5, restoring the restriction on the backward tilt angle of the backrest 6.
[0022] See attached document Figure 4 The armrest support 1 has an adjustment button 2 with a button return spring 15 at its front end, which is connected to the gas spring assembly 8 of the seat via a backrest adjustment zipper 16. The front end of the backrest adjustment zipper 16 is connected to the adjustment button 2, and the rear end is connected to the gas spring assembly 8 of the seat. The backrest angle can be adjusted by pressing the adjustment button 2 to open the gas spring assembly 8 via the adjustment zipper 16. The button return spring 15 returns the adjustment button 2 to its initial position.
[0023] See attached document Figure 7 The bottom of the armrest is provided with a guide plane 19, which guides the seat towards the limiting groove 13. When the seat rotates counterclockwise, the limiting roller 12 will slide through the guide plane 19 to the inside of the limiting groove 13 to lock the seat's seating direction. The limiting roller 12 is fixed.
[0024] See attached document Figure 1 and4 The anti-tipping roller 7 is mounted on the armrest support 1 via an eccentric bolt 18. When the seat reverses direction, the anti-tipping roller 7 rotates counterclockwise with the armrest support 1. The anti-tipping roller 7 slides to the underside of the anti-tipping pressure plate 10 to prevent the upper rotating part of the seat from tipping backward when the seat is in use. The height of the anti-tipping roller 7 can be adjusted via the eccentric bolt 18 to ensure proper alignment with the anti-tipping pressure plate 10 and avoid interference during rotation.
[0025] Preferably, the seat back mounting interface 4 has a concave structure, and the backrest pivot 5 has a flat waist shape, and they are connected to each other by plugging.
[0026] See attached document Figure 1 , 4 In section 8, the armrest support 1 has a gas spring mounting hole 17 and a rotation limiting device 9 below the armrest. The gas spring mounting hole 17 and the gas spring assembly 8 are matched and positioned. The seat rotates 180 degrees. At the 0° and 180° positions, the rotation limiting device 9 interacts with the limiting rubber block 14 to limit the rotation of the seat surface to the maximum extent. The rotation limiting device 9 and the armrest support 1 are integrally manufactured.
[0027] See attached document Figure 1 The top surface under the armrest is provided with an armrest cover plate 3; the armrest support is installed on the seat frame, and the armrest cover plate 3 is made of PC material to provide forearm support for passengers.
Claims
1. A novel armrest for railway passenger car seats, characterized in that: Installed on the backrest (6) and seat side of the rail passenger car seat, including armrest support (1), seat back mounting interface (4), anti-tipping roller (7), armrest mounting column (11), gas spring mounting hole (17), and limiting groove (13); the armrest support (1) is a C-shaped structure, consisting of the upper armrest, the support surface, and the lower armrest. The inner side of the support surface is provided with the seat back mounting interface (4), the inner side of the front end of the lower armrest is provided with the armrest mounting column (11), and the inner side of the middle part of the lower armrest is provided with the limiting groove (13). The armrest support (1), seat back mounting interface (4), armrest mounting column (7), and limit groove (13) are installed on the backrest (6) and seat side of the rail passenger car seat. 11) The limiting groove (13) and the gas spring mounting hole (17) are integrally formed by die casting process and are a whole component; the backrest (6) is provided with a backrest pivot (5) on the side, and the seat back mounting interface (4) and the backrest pivot (5) are connected by a convex-concave fit; the middle part of the side of the seat is provided with a limiting roller (12), and the limiting roller (12) is matched in the limiting groove (13); the inner side of the bottom surface of the armrest is installed with an anti-tipping roller (7) by an eccentric bolt (18), and the side of the seat is provided with an anti-tipping pressure plate (10), and the anti-tipping roller (7) is installed and matched on the underside of the anti-tipping pressure plate (10).
2. The novel armrest for railway passenger car seats according to claim 1, characterized in that: The armrest support (1) has an adjustment button (2) with a button return spring (15) at the front end of the armrest, and is connected to the gas spring assembly (8) of the seat through the backrest adjustment zipper (16); the front end of the backrest adjustment zipper (16) is connected to the adjustment button (2), and the rear end is connected to the gas spring assembly (8) of the seat.
3. The novel armrest for railway passenger car seats according to claim 1, characterized in that: The bottom of the handrail is provided with a guide plane (19), which is directed toward the limiting groove (13).
4. A novel armrest for railway passenger car seats according to claim 1, characterized in that: The seat back mounting interface (4) is a concave structure, and the backrest pivot (5) is a flat waist shape, and they are connected to each other by plugging.