Passenger seat leaning and sitting linkage structure

By designing the connection between the guide rails and sliding shaft grooves of the seat skeleton, the rotational linkage between the backrest and the seat cushion is achieved, which solves the problem of occupying the rear space after the seat back adjustment, and improves the passenger's seat adjustment amplitude and comfort.

CN222347016UActive Publication Date: 2025-01-14JILIN GINYO TRANSPORT FACILITIES
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421006592.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-10
Publication Date
2025-01-14
Estimated Expiration
2034-05-10

AI Technical Summary

Technical Problem

The passenger seat back of existing rail transit vehicles will occupy the seating space of the rear passengers, resulting in a reduced activity space for rear passengers, affecting the riding experience and comfort.

Method used

A passenger seat seat linkage structure is designed, which is connected through the guide rail of the seat skeleton and the sliding shaft groove. The backrest skeleton and the cushion skeleton are rotatably linked. When the cushion skeleton is pulled forward, the backrest skeleton tilts backward to avoid occupying the rear space. , and adjust the seat posture within the seat itself.

Benefits of technology

It effectively expands the passenger's seating posture adjustment range, relieves fatigue, improves riding comfort, and ensures riding comfort of the front and rear seats.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222347016U_ABST
    Figure CN222347016U_ABST
Patent Text Reader

Abstract

The utility model discloses a passenger seat leaning and sitting linkage structure, and belongs to the technical field of rail transit vehicle seats. The chair is provided with a backrest framework, a cushion framework and a seat framework, wherein the end part of the cushion framework is rotationally connected with the backrest framework through a pin shaft; the posture of the seat framework is fixed, and the seat framework is used for bearing the backrest framework and the cushion framework; a guide rail connected with the cushion framework in a sliding mode is arranged on the lower portion of the seat framework, and a shaft groove is formed in the upper portion of the seat framework and used for being connected with a sliding shaft arranged on the backrest framework in a sliding mode so that when the cushion framework slides, the sliding shaft can move along the shaft groove. According to the sitting posture adjusting mechanism, sitting posture adjustment of the backrest and the seat cushion in a linkage mode in the sitting space of the seat is achieved, and the sitting posture adjusting mechanism has the advantages that the sitting posture adjusting range is enlarged, the body of a passenger is stretched, and the sitting comfort is good.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit vehicle seats, in particular to a passenger seat back-sitting linkage structure. Background Art

[0002] With the rapid development of rail transit, passengers' demand for seat comfort is gradually increasing, especially when riding for a long time. At present, the relative distance between the two rows of passenger seats used in rail transit vehicles is fixed, and the backrest can only be adjusted forward and backward. When the backrest is adjusted backward, it will occupy the riding space of the rear passengers, resulting in a reduction in the activity space of the rear passengers, affecting the riding experience and reducing comfort. In addition, the sitting posture adjustment for passengers who sit on the seats for a long time is also very limited, and it cannot well meet the comfort requirements of passengers when riding. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a passenger seat backrest linkage structure for solving the problem that the rear passenger riding space is occupied and the riding comfort is poor after the seat back is adjusted.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model discloses a passenger seat back-sitting linkage structure, comprising:

[0006] A backrest frame, a seat cushion frame whose end is rotatably connected to the backrest frame through a pin, and a seat frame fixed in posture for carrying the backrest frame and the seat cushion frame;

[0007] The lower part of the seat frame is equipped with a guide rail that is slidably connected to the seat cushion frame, and the upper part of the seat frame is provided with an axial groove for slidably connecting to the sliding shaft installed on the backrest frame, so that when the seat cushion frame slides and moves, the sliding shaft moves along the axial groove, so that the backrest frame rotates around the pin shaft and follows the seat cushion frame to extend or fold above the seat frame in a linked manner.

[0008] Furthermore, the seat frame has a seat cover, and the seat cover is provided with a U-shaped shaft groove at a side portion corresponding to the backrest frame, and the sliding shaft is in rolling contact with the shaft groove via a bearing.

[0009] Furthermore, the seat frame is constructed as an L-shaped structure in which the angle between the backrest portion and the seat cushion portion is an obtuse angle.

[0010] Furthermore, the seat frame includes two guide rails arranged at intervals, and a limiting column is installed on the seat frame between the two guide rails. The lower part of the cushion frame is fixedly connected with cross beams capable of contacting the limiting columns respectively at intervals perpendicular to its displacement direction.

[0011] Furthermore, a buffer is installed on the cross beam, and the cross beam and the limiting column are brought into buffering contact through the buffer.

[0012] Furthermore, the guide rail is a linear guide rail, and the seat cushion frame is provided with a side beam at a position corresponding to the guide rail, and is fixedly connected to a slider on the linear guide rail through the side beam. The side beam is provided with ear plates on both sides of the backrest frame end, and the ear plates are provided with an axial hole connected to the pin shaft.

[0013] Furthermore, it also includes a flexible pad, and the backrest frame and the seat cushion frame are both covered with the flexible pad.

[0014] Furthermore, the flexible pad includes a sponge and a surface cloth wrapping the sponge.

[0015] In the above technical solution, the utility model provides a passenger seat back-sitting linkage structure, which has the following beneficial effects:

[0016] The passenger seat backrest linkage structure effectively solves the problem that the rearward adjustment of the backrest will occupy the riding space of the rear passengers, resulting in a reduction in the activity space for the rear passengers and affecting the riding experience. The seat frame of the passenger seat backrest linkage structure is fixed in posture and the angle is not adjustable. The lower part of the seat frame is slidably connected with the seat cushion frame through a guide rail, and the upper part is slidably connected with the sliding shaft of the backrest frame through an axle groove and the backrest frame. The backrest frame and the cushion frame are rotationally connected. When in use, when the cushion frame is pulled forward, the backrest frame and the cushion frame are linked, and the backrest frame tilts backward without occupying the riding space of the rear passengers. The sitting posture adjustment of the backrest and the seat cushion in linkage is only realized within the seat's own riding space, and the passenger's sitting posture adjustment range becomes larger, the passenger's body is stretched, and the passenger's fatigue is effectively relieved, with better comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the passenger seat back-sitting linkage structure disclosed in the utility model;

[0019] Figure 2It is a structural schematic diagram of a passenger seat with a seat frame assembled with a backrest frame in a seat-back linkage structure disclosed in the utility model;

[0020] Figure 3 It is a schematic diagram of the assembly state of the backrest frame and the seat cushion frame of the passenger seat back-sitting linkage structure disclosed in the utility model;

[0021] Figure 4 It is a top view of the seat frame of the passenger seat with a seat-back linkage structure disclosed in the utility model;

[0022] Figure 5 It is a top view of the seat cushion frame of the passenger seat back-sitting linkage structure disclosed in the utility model;

[0023] Figure 6 It is a schematic diagram of the passenger seat back-sitting linkage structure disclosed in the utility model in the use state;

[0024] Figure 7 It is a structural schematic diagram of another embodiment of the overall structure of the passenger seat backrest linkage structure disclosed in the utility model.

[0025] Description of reference numerals:

[0026] 10. Backrest frame; 11. Pin shaft; 12. Circlip; 13. Sliding shaft; 14. Plastic washer; 15. Bearing; 16. Circlip;

[0027] 20. Seat frame; 21. Side beam; 22. Cross beam; 23. Rubber pad; 24. Screw assembly;

[0028] 30. Seat frame; 31. Seat cover; 32. Axle slot; 33. Limiting column; 34. Mounting slide slot; 35. Mounting slide block; 36. Screw assembly;

[0029] 40. Linear guide rail; 41. Slide rail; 42. Slider;

[0030] 50. Flexible pad;

[0031] 60. Button. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] See also Figure 1-3 As shown:

[0034] The utility model discloses a passenger seat back-sitting linkage structure, comprising: a backrest frame 10, a cushion frame 20, and a seat frame 30;

[0035] The bottom end of the backrest frame 10 is rotatably connected to the seat cushion frame 20 through a pin shaft 11, wherein the seat frame 30 is fixedly connected in posture, that is, the angles of the backrest and the seat cushion of the seat frame 30 are not adjustable, and the backrest frame 10 and the seat cushion frame 20 are supported by the seat frame 30. A guide rail slidably connected to the seat cushion frame 20 is installed at the lower part of the seat frame 30, and the guide rail is a linear guide rail 40. Of course, the guide rail can also be a slide rail structure in the prior art that can realize the linear sliding displacement of the seat cushion frame 20;

[0036] See also Figure 2 As shown, an axis groove 32 is opened on the upper part of the seat frame 30, and a sliding shaft 12 is installed on the backrest frame 10 corresponding to the axis groove 32. The seat frame 30 is slidably connected with the sliding shaft 12 of the backrest frame 10 through the axis groove 32. When in use, the seat cushion frame 20 is pulled forward to drive the backrest frame 10 to slide forward, that is, the sliding shaft 12 of the backrest frame 10 slides along the axis groove 32 of the seat frame 30, and at the same time, the backrest frame 10 rotates around the pin shaft 11 to follow the seat cushion frame 20 to stretch or fold above the seat frame 30, thereby solving the problem of occupying the seating space of the rear passengers when adjusting the sitting posture, and only realizes the linkage sitting posture adjustment of the backrest and seat cushion in the passenger seating space, thereby ensuring the riding comfort of the front and rear rows of seats.

[0037] See also Figure 2 As shown:

[0038] Preferably, the seat frame 30 has a seat cover 31 , and a U-shaped shaft groove 32 is opened on the side of the seat cover 31 corresponding to the backrest frame 10 , and the sliding shaft 12 is in rolling contact with the shaft groove 32 through the bearing 15 .

[0039] Specifically, the seat cover 31 is covered on the outside of the backrest frame 10 and the cushion frame 20. The seat cover 31 is provided with shaft grooves 32 on both sides of the backrest frame 10. The U-shaped opening of the shaft groove 32 faces downward. The backrest frame 10 is provided with sliding shafts 13 on both sides. Figure 2 As shown, the sliding shaft 13 body is fixedly connected to the backrest frame 10, and a bearing 15 is installed at the end of the sliding shaft 13 body through a pin shaft, specifically a needle bearing, and a plastic washer 14 is installed on one side of the pin shaft at the bearing 15, and an elastic retaining ring 16 is installed on the other side through a retaining ring groove;

[0040] See also Figure 1 As shown:

[0041] Preferably, the seat frame 30 is constructed as an L-shaped structure in which the angle between the backrest and the cushion is an obtuse angle. Specifically, the angle between the backrest and the cushion can be 90° or greater than 90°.

[0042] See also Figure 1 , 6 As shown:

[0043] Preferably, the seat frame 30 includes two guide rails arranged at intervals, and the seat frame 30 is installed with limiting columns 33 between the two guide rails. The lower part of the cushion frame 20 is fixedly connected with cross beams 22 which can contact the limiting columns 33 respectively at intervals perpendicular to its displacement direction. The displacement stroke of the cushion frame 20 is limited by the two cross beams 22. When the cushion frame 20 slides forward or backward to the extreme position, the seat frame 30 contacts the cross beam 22 through the limiting columns 33, thereby preventing the cushion frame 20 from moving forward or backward.

[0044] See also Figure 6 As shown, in order to avoid collision noise between the limit column 33 and the cross beam 22 when adjusting the seat cushion frame 20, and to ensure passenger comfort, preferably, the cross beam 22 is equipped with a buffer component, through which the cross beam 22 and the limit column 33 are in buffering contact, and the buffer component is a rubber pad 23 or other elastic component in the prior art that can play a buffering role.

[0045] See also Figure 3-5 As shown:

[0046] Preferably, the guide rail is a linear guide rail 40, which includes a slide rail 41 and a slider 42 slidably connected to the slide rail 41, see Figure 4 As shown, both front and rear ends of the seat frame 30 are provided with mounting grooves 34, and mounting sliders 35 are slidably connected in the mounting grooves 34. The mounting sliders 35 have threaded holes, and the ends of the slide rails 41 are threadedly connected with the threaded holes of the mounting sliders 35 through screw assemblies 36, so that the linear guide rails 40 are fixedly connected to the seat frame 30;

[0047] The seat frame 20 is provided with a side beam 21 at a position corresponding to the linear guide rail 40, and the side beam 21 is fixedly connected to the slider 42 on the linear guide rail 40. For details, see Figure 5 As shown, the slider 42 is provided with a threaded hole, and the side beam 21 is threadedly connected with the threaded hole of the slider 42 through the screw assembly 24, so that the seat cushion frame 20 is connected with the linear guide rail 40, so that the seat cushion frame 20 can slide on the seat frame 30;

[0048] Among them, the side beam 21 is provided with ear plates on both sides of the backrest frame 10. The ear plates can be fixedly connected to the side beam 21 by welding technology, or can be bent and formed by bending technology. The ear plates are provided with shaft holes, and the bottom end of the backrest frame 10 is also provided with shaft holes. The pin shaft 11 passes through the two shaft holes to make the backrest frame 10 and the cushion frame rotatably connected. One end of the pin shaft 11 has a shoulder, and the other end is provided with an elastic retaining ring 12 through a retaining ring groove. The shoulder and the elastic retaining ring 12 prevent the pin shaft 11 from being separated from the shaft hole. The cushion frame 20 is pulled forward, and the backrest frame 10 is driven to slide forward together through the pin shaft 11 to realize the seat-back linkage.

[0049] See also Figure 7 As shown:

[0050] In order to improve the seat comfort, preferably, the passenger seat sitting linkage structure further includes a flexible pad 50, the backrest frame 10 and the seat cushion frame 20 are both covered with the flexible pad 50, and the flexible pad 50 includes a sponge and a surface cloth wrapped with the sponge.

[0051] The seat frame 30 is provided with armrests on both sides, and a button 60 is installed on at least one side. The button 60 is used to trigger the locking structure on the seat frame 30 to unlock, release the seat cushion frame 20, and make the seat cushion frame 20 slide forward and backward.

[0052] In the above technical scheme, the passenger seat backrest linkage structure provided by the utility model effectively solves the problem that the rearward adjustment of the backrest will occupy the riding space of the rear passengers, resulting in a reduction in the activity space of the rear passengers and affecting the riding experience. The passenger seat backrest linkage structure has a seat frame 30 with a fixed posture and a non-adjustable angle. The cushion portion of the seat frame 30 is slidably connected to the cushion frame 20 through a guide rail, and the backrest portion is slidably connected to the sliding shaft 13 of the backrest frame 10 through an axis groove 32, and the backrest frame 10 is rotatably connected to the cushion frame 20. When in use, when the cushion frame 20 is pulled forward, the backrest frame 20 and the cushion frame 10 are linked, and the backrest frame 10 tilts backward, without occupying the riding space of the rear passengers. The sitting posture adjustment of the backrest and the seat cushion in a linked manner is only realized within the seat's own riding space, and the passenger's sitting posture adjustment range becomes larger, the passenger's body is stretched, and the passenger's fatigue is effectively relieved, and the comfort is better.

[0053] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A passenger seat back-sitting linkage structure, characterized in that: include: A backrest frame (10), a seat cushion frame (20) whose end is rotatably connected to the backrest frame (10) via a pin shaft (11), and a seat frame (30) which is fixed in posture and is used to carry the backrest frame (10) and the seat cushion frame (20); The lower part of the seat frame (30) is provided with a guide rail slidably connected to the seat cushion frame (20), and the upper part of the seat frame (30) is provided with an axial groove (32) for slidably connecting with the sliding shaft (12) installed on the backrest frame (10), so that when the seat cushion frame (20) slides and moves, the sliding shaft (12) moves along the axial groove (32), so that the backrest frame (10) rotates around the pin shaft (11) and follows the seat cushion frame (20) to extend or fold above the seat frame (30) in a linked manner.

2. The passenger seat backrest linkage structure according to claim 1 is characterized in that ； The seat frame (30) has a seat cover (31), and the seat cover (31) is provided with a U-shaped shaft groove (32) on the side corresponding to the backrest frame (10), and the sliding shaft (12) is in rolling contact with the shaft groove (32) via a bearing (15).

3. The passenger seat backrest linkage structure according to claim 1 or 2, characterized in that ； The seat frame (30) is constructed as an L-shaped structure in which the angle between the backrest portion and the seat cushion portion is an obtuse angle.

4. The passenger seat backrest linkage structure according to claim 1 is characterized in that ； The seat frame (30) comprises two guide rails arranged at intervals, a limiting column (33) is installed between the two guide rails of the seat frame (30), and cross beams (22) capable of contacting the limiting columns (33) are fixedly connected to the lower part of the cushion frame (20) at intervals perpendicular to the displacement direction thereof.

5. The passenger seat backrest linkage structure according to claim 4 is characterized in that ； The cross beam (22) is provided with a buffer component, through which the cross beam (22) and the limiting column (33) are brought into buffering contact.

6. The passenger seat backrest linkage structure according to claim 1 is characterized in that ； The guide rail is a linear guide rail (40), and the seat cushion frame (20) is provided with a side beam (21) at a position corresponding to the guide rail, and the side beam (21) is fixedly connected to a slider (42) on the linear guide rail (40), and the side beam (21) is provided with ear plates on both sides of the end of the backrest frame (10), and the ear plates are provided with an axial hole connected to the pin shaft (11).

7. The passenger seat backrest linkage structure according to claim 1 is characterized in that ； It also comprises a flexible pad (50), and the outside of the backrest frame (10) and the seat cushion frame (20) are both covered with the flexible pad (50).

8. The passenger seat backrest linkage structure according to claim 7 is characterized in that ； The flexible pad (50) comprises a sponge and a face cloth wrapping the sponge.