A swingable seat structure

Abstract

The present invention discloses a swingable seat structure, including a base frame, a seat and a rotating assembly. The seat includes a cushion plate and a backrest plate, and also includes: an armrest, a table plate assembly and a swing assembly. The armrests are respectively mounted on the base frame on both sides of the cushion plate, and a rotation center hole is provided on one side of the armrest facing the cushion plate; the table plate assembly includes a table plate bracket and a table plate body, one end of the table plate bracket is rotationally connected to the armrest at the position of the rotation center hole, and the other end is rotationally connected to the table plate body, and the table plate body is fixed to the backrest plate when stored; the seat swing assembly includes an installation slider, which is respectively mounted on both sides of the cushion plate, and a circular arc guide groove is provided on one side of the armrest facing the cushion plate, and the installation slider is slidably connected in the circular arc guide groove. When the seat adjusts the angle, the table plate bracket and the seat both rotate around the rotation center hole. The present invention solves the track interference problem encountered by a seat with a table plate during the swinging process.

Description

Technical Field

[0001] The invention relates to the technical field of train seats, and in particular to a swingable seat structure. Background Art

[0002] High-speed rail and aviation are two common modes of transportation for people to travel long distances. With the continuous development of society, passengers no longer only require transportation to provide riding functions, but also require equipment to provide different needs such as rest, entertainment, work, and dining during the journey. In order to meet the various needs of passengers, some trains or airplanes have small tables installed behind the seat backs for passengers to place dining utensils, work laptops, entertainment magazines and other items. The table in the prior art is usually directly fixed to the seat. When the front row of seats is adjusted in angle, the table tilts as the seat back angle is adjusted, and the items on the table are easy to fall off.

[0003] At present, a Chinese patent with publication number CN104071171B discloses a table top for train seats, wherein the table top is composed of a support arm assembly structure and a support plate assembly structure, wherein the support arm assembly structure and the support plate assembly structure are rotatably connected via a rotating shaft structure, and wherein the support arm assembly structure is composed of a support arm body and a front cover shell and a rear cover shell respectively arranged on both sides of the support arm body.

[0004] Although this patent does not cause the seat to tilt due to the adjustment of the seat angle, and is easy to operate and safe to use, when the table top is stored, adjusting the seat angle will interfere with the movement track of the seat, hindering the adjustment of the seat angle. Utility Model Content

[0005] The purpose of the present invention is to provide a swingable seat structure, which overcomes the problem of trajectory interference encountered in the swinging process of a seat with a table top in the prior art, has a simple structure and is easy to use.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A swingable seat structure, comprising a base frame, a seat and a rotating assembly, wherein the seat comprises a seat cushion plate and a backrest plate, and the rotating assembly is used for adjusting the seat angle, and is characterized in that it also comprises armrests, a table plate assembly and a swing assembly, wherein the armrests are respectively mounted on the base frame at both sides of the seat cushion plate, and a rotating center hole is opened on one side of the armrest facing the seat cushion plate;

[0008] The table board assembly includes a table board bracket and a table board body, one end of the table board bracket is rotatably connected to the armrest at the position of the rotating center hole, and the other end is rotatably connected to the table board body, and the table board body is fixed to the backrest board when stored;

[0009] The swing assembly includes mounting sliders, which are respectively mounted on both sides of the seat cushion plate. A circular arc guide groove is provided on the side of the armrest facing the seat cushion plate. The mounting slider is slidably connected in the circular arc guide groove. The circular arc guide groove is an arc groove with a rotating center hole as the center. When the seat is adjusted in angle, the table bracket and the seat both rotate with the rotating center hole as the center.

[0010] By adopting the above technical solution, the table top body is connected to the armrest through the table top bracket, so that the rotation center of the table top body is located at the rotation center hole position, and the rotation center of the seat is positioned at the rotation center hole position through the swing assembly. The rotation centers of the seat and the table top body are located at the same point, so that the movement tracks of the table top and the seat no longer interfere with each other, and continuous movement can be completed.

[0011] It is further configured that: the arc guide groove includes a first guide groove and a second guide groove, the mounting slide block includes a first slide block and a second slide block, and the first slide block and the second slide block are respectively slidably connected in the first guide groove and the second guide groove.

[0012] By adopting the above technical solution, the provision of the first guide groove and the second guide groove greatly enhances the stability of the connection between the armrest and the seat cushion, making the seat safer and more stable during the swinging process.

[0013] It is further configured that the length of the cushion plate is a first length, the horizontal distance between the first guide rail groove and the second guide rail groove is a second length, and the ratio of the second length to the first length is greater than one quarter.

[0014] By adopting the above technical solution, the ratio of the horizontal distance between the first guide groove and the second guide groove to the seat cushion plate is greater than one-fourth, so that the span between the two guide grooves is maximized, thereby increasing the stability of the connection between the armrest and the seat cushion plate.

[0015] Further configuration: the swing assembly also includes a fixed column and a tension spring, the fixed column is installed on the side of the armrest facing the seat cushion plate, one end of the tension spring is connected to the fixed column, and the other end is connected to an end of the seat cushion plate away from the backrest plate, the tension spring is stretched when the seat swings, providing elastic force to reset the seat.

[0016] By adopting the above technical solution, the setting of the fixed column and the tension spring enables the seat cushion to automatically return to its original state after the angle is adjusted, without the need for manual adjustment, thereby enhancing the convenience of use.

[0017] Further configuration: a plurality of positioning holes are opened on the surface of the first sliding block facing the backrest plate, a fixing seat is installed on the side wall of the first guide rail groove opposite to the positioning holes, a pin lock is slidably connected in the fixing seat, the pin lock slides in the fixing seat so that it is inserted into or detached from the positioning hole toward one end of the first guide rail groove, and an armrest is extended from the end of the pin lock away from the first guide rail groove and is connected to a handle.

[0018] By adopting the above technical solution, the arrangement of the positioning hole and the pin lock enables the seat to stay firmly at the angle after the angle is adjusted without applying external force.

[0019] It is further configured that: one end of the pin lock toward the positioning hole protrudes outward with a limiting edge, and the pin lock is also sleeved with a reset spring, one end of the reset spring abuts against the limiting edge, and the other end abuts against the fixing seat, and when the pin lock is disengaged from the positioning hole, the reset spring is compressed to generate an elastic force that causes the pin lock to be inserted into the positioning hole.

[0020] By adopting the above technical solution, the setting of the reset spring enables the pin lock to automatically return to its original position after being pulled out, without the need to manually insert the pin lock into the positioning hole again, which is convenient and quick to use.

[0021] It is further provided that: a guide groove inclined toward the inside of the positioning hole is provided at the opening of the positioning hole for guiding the insertion of the pin lock.

[0022] By adopting the above technical solution, the guide groove is used to guide the pin lock into the positioning hole, avoiding slight angle deviation that causes the pin lock to be misaligned with the positioning hole and cannot be fixed, thereby improving the convenience of use.

[0023] It is further configured that a guide block is provided on the armrest, and a guide slope is provided on one end of the guide block facing the handle, and the guide slope abuts against one side of the handle to make the handle slide along the direction of the guide slope.

[0024] By adopting the above technical solution, the arrangement of the guide block and the guide slope facilitates the pulling out of the pin lock, and the guide block also has a supporting effect on it, thereby preventing the pin lock from bending due to external force.

[0025] In summary, the present invention has the following beneficial effects: it overcomes the problem of trajectory interference encountered in the swinging process of a seat with a table in the prior art, allows the seat to be swung and adjusted at multiple angles, improves passenger comfort, has a simple structure, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the overall structure diagram of the embodiment;

[0027] Figure 2 is a side schematic diagram of an embodiment;

[0028] Figure 3 is a schematic diagram of the structure of the fixed column and the tension spring in the embodiment;

[0029] Figure 4 Schematic diagram of the structure of the swing assembly in the embodiment.

[0030] In the figure, 1, base frame; 2, rotating assembly; 3, seat cushion plate; 4, backrest plate; 5, armrest; 6, rotating center hole; 7, table board bracket; 8, table board body; 9, first slider; 10, second slider; 11, first guide groove; 12, second guide groove; 13, fixing column; 14, tension spring; 15, positioning hole; 16, fixing seat; 17, pin lock; 18, handle; 19, guide block; 20, reset spring. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0032] Example:

[0033] like Figure 1 and Figure 2 As shown, a swingable seat structure includes a base frame 1, a seat and a rotating assembly 2. The seat includes a cushion board 3 and a backrest board 4. The length of the cushion board 3 and the length of the backrest board 4 are in a ratio of 17:32. The rotating assembly 2 is installed on the base frame 1 for adjusting the seat angle, that is, the cushion board 3 and the backrest board 4 can be rotated around the rotating assembly 2 to adjust the angle suitable for the passengers. An armrest 5, a table board assembly and a swing assembly are also installed above the base frame 1, wherein the armrest 5 is respectively fixed to the base frame 1 on both sides of the cushion board 3 by bolts, and a rotation center hole 6 is opened on the side of the armrest 5 facing the cushion board 3. The table board assembly includes a table board bracket 7 and a table board body 8. One end of the table board bracket 7 is rotatably connected to the armrest 5 at the position of the rotating center hole 6, and the other end extends to be connected to the table board body 8. Connecting strips are connected to both sides of the table board body 8 facing the table board bracket 7. An arc-shaped sliding groove is provided on the side of the table board bracket 7 facing the table board body 8. The end of the connecting strip away from the table board body 8 is slidably connected in the sliding groove. When the table board body 8 is stored, it is fixed on the backrest board 4. When the table board body 8 is flipped downward, the connecting strip slides from one end of the sliding groove to the other end to be limited. At this time, the table board forms a horizontal desktop for placing items.

[0034] like Figure 3 and Figure 4As shown, the swing assembly includes an installation slider, which is respectively fixed on both sides of the cushion plate 3, and the installation slider includes a first slider 9 and a second slider 10. The armrest 5 has an arc guide groove protruding toward one side of the cushion plate 3, and the arc guide groove is an arc groove with the rotation center hole 6 as the center. The arc guide groove includes a first guide groove 11 and a second guide groove 12. The first slider 9 and the second slider 10 are respectively slidably connected in the first guide groove 11 and the second guide groove 12. The cushion plate 3 swings along the track through the installation slider, wherein the radius of the first guide groove 11 with the rotation center hole 6 as the center is the first radius, and the radius of the second guide groove 12 with the rotation center hole 6 as the center is the second radius, and the ratio of the first radius to the second radius is 120:73. The length of the cushion plate 3 is the first length, and the horizontal distance between the first guide groove 11 and the second guide groove 12 is the second length. The ratio of the second length to the first length is 27:100, so that the span between the two arc guide grooves is maximized, ensuring the stability of the cushion plate 3 when swinging along the track. At this time, when the seat is adjusted in angle, the table support 7 and the seat rotation center are combined into one point, that is, their rotation centers are both located at the rotation center hole 6. In order to enable the seat to return to its initial state after adjusting the angle, the seat swing assembly is also equipped with a fixed column 13 and a tension spring 14. The fixed column 13 is fixedly welded to the side of the armrest 5 facing the seat cushion 3. One end of the tension spring 14 is connected to the fixed column 13, and the other end is connected to the end of the seat cushion 3 away from the backrest 4. The passenger can lean back to adjust the swing angle. At this time, the front end of the seat cushion 3 is lifted, the tension spring 14 is stretched, and the seat cushion 3 has a tendency to reset under the action of the spring force. The seat cushion 3 can reset automatically.

[0035] like Figure 4As shown, in order to enable passengers to fix the angle after adjusting it to a suitable angle to avoid swinging again, three positioning holes 15 are opened on the side of the first sliding block 9 facing the backrest plate 4, and a fixing seat 16 is installed on the side wall of the first guide groove 11 opposite to the positioning holes 15. A pin lock 17 is slidably connected in the fixing seat 16. One end of the pin lock 17 passes through the side wall of the first guide groove 11 and is inserted into one of the positioning holes 15, and the other end extends obliquely upward from the armrest 5 and is connected to the handle 18. A guide block 19 is provided on the armrest 5, and the guide block 19 is provided with a guiding inclined surface. The guiding inclined surface contacts one side of the handle 18 for supporting the handle 18 to prevent the pin lock 17 from bending or even breaking due to the downward external force due to unexpected circumstances. At the same time, the opening of the guiding inclined surface makes it convenient for the handle 18 to drive the pin lock 17 to be pulled out along the guiding inclined surface, which is more labor-saving. One end of the pin lock 17 toward the positioning hole 15 protrudes outward with a limited edge, and a reset spring 20 is also sleeved on the pin lock 17. One end of the reset spring 20 contacts the limited edge, and the other end contacts the fixed seat 16. The installation of the reset spring 20 allows the pin lock 17 to be automatically inserted into the positioning hole 15 without the need for human action again after being pulled out of the positioning hole 15 by manpower. The operation is simple and quick. Guide grooves inclined toward the inside of the positioning hole 15 are provided on both sides of the opening of the positioning hole 15. When the pin lock 17 is located on the guide groove during resetting, it will automatically slide into the adjacent positioning hole 15 to avoid getting stuck.

[0036] The use process of the present invention is as follows: when the passenger needs to adjust the angle, first grasp the handle 18 to pull the pin lock 17 upward along the guide inclined surface of the guide block 19, so that the pin lock 17 is disengaged from the positioning hole 15, and the reset spring 20 is compressed. Then the passenger can lean back to adjust the angle, and the installation slider slides along the arc guide groove. The seat rotates with the rotation center hole 6 as the center of the circle, and at the same time drives the table board bracket 7 to rotate synchronously with the rotation center hole 6 as the center of the circle. The movement trajectory of the table board body 8 and the seat will not interfere with each other. At this time, the tension spring 14 is stretched. When it is adjusted to the desired angle, just release the handle 18. The pin lock 17 moves toward the positioning hole 15 under the elastic force of the reset spring 20 until it is inserted into the positioning hole 15 to fix the seat. When the pin lock 17 is located on the guide groove, it will automatically slide into the adjacent positioning hole 15.

[0037] The above-described implementation methods do not constitute a limitation on the protection scope of the technical solution. Any modification, equivalent replacement and improvement made within the spirit and principle of the above-described implementation methods shall be included in the protection scope of the technical solution.

Claims

1. A swingable seat structure, comprising a base frame (1), a seat and a rotating assembly (2), wherein the seat comprises a seat cushion plate (3) and a backrest plate (4), and the rotating assembly (2) is used for adjusting the angle of the seat, characterized in that: It also includes an armrest (5), a table top assembly and a swing assembly, wherein the armrest (5) is respectively mounted on the base frame (1) on both sides of the cushion plate (3), and a rotation center hole (6) is provided on a side of the armrest (5) facing the cushion plate (3); The table board assembly comprises a table board bracket (7) and a table board body (8), one end of the table board bracket (7) is rotatably connected to the armrest (5) at the position of the rotation center hole (6), and the other end is rotatably connected to the table board body (8), and the table board body (8) is fixed on the backrest board (4) when stored; The swing assembly comprises mounting slide blocks, the mounting slide blocks are respectively mounted on both sides of the cushion plate (3), a circular arc guide groove is provided on the side of the armrest (5) facing the cushion plate (3), the mounting slide block is slidably connected in the circular arc guide groove, the circular arc guide groove is an arc groove with the rotation center hole (6) as the center, and when the seat is adjusted in angle, the table support (7) and the seat both rotate with the rotation center hole (6) as the center; The arc guide groove comprises a first guide groove (11) and a second guide groove (12); the mounting slide block comprises a first slide block (9) and a second slide block (10); the first slide block (9) and the second slide block (10) are slidably connected to the first guide groove (11) and the second guide groove (12), respectively. A plurality of positioning holes (15) are formed on a surface of the first sliding block (9) facing the backrest plate (4); a fixing seat (16) is installed on a side wall of the first guide groove (11) opposite to the positioning holes (15); a pin lock (17) is slidably connected in the fixing seat (16); the pin lock (17) slides in the fixing seat (16) so that it is inserted into or separated from the positioning hole (15) toward one end of the first guide groove (11); the pin lock (17) is away from the first guide groove (11). 1) extends out of an armrest (5) and is connected to a handle (18); one end of the pin lock (17) facing the positioning hole (15) protrudes outwardly to form a limiting edge; a return spring (20) is sleeved on the pin lock (17); one end of the return spring (20) contacts the limiting edge, and the other end contacts the fixing seat (16); when the pin lock (17) is separated from the positioning hole (15), the return spring (20) is compressed to generate an elastic force that causes the pin lock (17) to be inserted into the positioning hole (15).

2. A swingable seat structure according to claim 1, characterized in that: The length of the cushion plate (3) is a first length, the horizontal distance between the first guide rail groove (11) and the second guide rail groove (12) is a second length, and the ratio of the second length to the first length is greater than one quarter.

3. The swingable seat structure according to claim 1, characterized in that: The swing assembly further comprises a fixed column (13) and a tension spring (14); the fixed column (13) is mounted on the side of the armrest (5) facing the seat cushion (3); one end of the tension spring (14) is connected to the fixed column (13), and the other end is connected to an end of the seat cushion (3) away from the backrest (4); the tension spring (14) is stretched when the seat swings, providing an elastic force to reset the seat.

4. The swingable seat structure according to claim 1, characterized in that: A guide groove inclined toward the inside of the positioning hole (15) is provided at the opening of the positioning hole (15) for guiding the insertion of the pin lock (17).

5. The swingable seat structure according to claim 1, characterized in that: A guide block (19) is provided on the handrail (5), and a guide slope is provided on one end of the guide block (19) facing the handle (18). The guide slope abuts against one side of the handle (18) to enable the handle (18) to slide along the direction of the guide slope.

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