Backrest assembly, seat and vehicle

Abstract

This invention provides a backrest assembly, a seat, and a vehicle, relating to the field of vehicle manufacturing technology. The backrest frame includes a first backrest side panel and a second backrest side panel spaced laterally apart. A first mounting bracket is rotatably connected to the first backrest side panel via a first adjuster, and a second mounting bracket is rotatably connected to the second backrest side panel via an adjuster assembly. The first and second mounting brackets are respectively connected to a seat cushion frame. The adjuster assembly includes at least two second adjusters, each rotatably connected between the second mounting bracket and the second backrest side panel. A drive assembly is adapted to simultaneously drive the first and second adjusters to rotate the backrest frame relative to the seat cushion frame. This backrest assembly can meet different user seating needs, improve seating comfort, and ensure the reliability of the first adjuster and the adjuster assembly, thereby ensuring the reliability of the backrest frame adjustment.

Description

Technical Field

[0001] This invention relates to the field of vehicle manufacturing technology, and in particular to a backrest assembly, a seat, and a vehicle. Background Technology

[0002] With the development of the national economy and the continuous improvement of living standards, vehicles are becoming increasingly important in daily life and travel. The user experience and reliability of vehicles are key considerations during vehicle manufacturing. Vehicles are equipped with seats that can be adjusted to suit the different needs, conditions, and habits of drivers and passengers, achieving a comfortable seating posture. In existing vehicles, the seat back assembly is rotatably mounted to the rear of the seat cushion assembly via a rotating structure, allowing the backrest assembly to be adjusted to different angles to meet various user needs. However, this places the entire weight of the backrest assembly on the rotating structure, resulting in poor reliability of the rotating structure and consequently affecting the stability of the backrest assembly adjustment, indicating room for improvement. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a backrest assembly that can ensure user comfort and improve the reliability of the first adjuster and the adjuster assembly, thereby ensuring the reliability of the backrest frame adjustment.

[0004] According to an embodiment of the present invention, a backrest assembly includes: a backrest frame, the backrest frame including a first backrest side plate and a second backrest side plate spaced laterally apart; a first mounting bracket and a second mounting bracket, the first mounting bracket being rotatably connected to the first backrest side plate via a first angle adjuster, the second mounting bracket being rotatably connected to the second backrest side plate via an angle adjuster assembly, the first mounting bracket and the second mounting bracket being respectively connected to a seat cushion frame; and a driving assembly, the angle adjuster assembly including at least two second angle adjusters, the at least two second angle adjusters being rotatably connected between the second mounting bracket and the second backrest side plate, the driving assembly being adapted to simultaneously drive the first angle adjuster and the second angle adjuster to rotate the backrest frame relative to the seat cushion frame.

[0005] According to the backrest assembly of the present invention, by providing a first adjuster and an adjuster assembly, the angle of the backrest frame relative to the seat cushion frame can be adjusted, thereby meeting different user seating needs and improving seating comfort. The adjuster assembly is provided with at least two second adjusters, thereby reducing the force on each adjuster, extending the service life of the first adjuster and the adjuster assembly, and ensuring the reliability of the first adjuster and the adjuster assembly. This, in turn, ensures the reliability of the backrest frame adjustment, resulting in better performance and a wider range of applications.

[0006] According to some embodiments of the present invention, the second backrest side panel includes a side panel body and a connecting bracket. The connecting bracket is installed on the bottom of the side panel body away from the first backrest side panel. At least a portion of the connecting bracket is distributed laterally spaced from the side panel body. At least two second angle adjusters are rotatably connected between the second mounting bracket and the connecting bracket.

[0007] According to some embodiments of the present invention, in the backrest assembly, the second mounting bracket forms a receiving space, at least a portion of the connecting bracket extends into the receiving space, and there are two second angle adjusters, namely an inner angle adjuster and an outer angle adjuster, the inner angle adjuster being rotatably connected between the inner sides of the second mounting bracket and the connecting bracket, and the outer angle adjuster being rotatably connected between the outer sides of the second mounting bracket and the connecting bracket.

[0008] According to some embodiments of the present invention, the backrest assembly includes a first sub-bracket and a second sub-bracket, the first sub-bracket and the second sub-bracket being connected and jointly defining the receiving space; The first sub-bracket is located on the side of the second sub-bracket away from the backrest frame. The outer angle adjuster is rotatably connected between the outer sides of the first sub-bracket and the connecting bracket, and the inner angle adjuster is rotatably connected between the inner sides of the second sub-bracket and the connecting bracket.

[0009] According to some embodiments of the present invention, the backrest assembly has a first limiting portion and a second mounting bracket having a first limiting engagement portion and a second limiting engagement portion. The first limiting portion is adapted to limit and press against the first limiting engagement portion when the backrest frame rotates to its limit position in a first direction, and the first limiting portion is adapted to limit and press against the second limiting engagement portion when the backrest frame rotates to its limit position in a second direction, wherein the first direction and the second direction are opposite.

[0010] According to some embodiments of the present invention, a limiting plate is provided on the outer side of the bottom of the first backrest side plate. The limiting plate is formed with a connecting sub-plate and a limiting sub-plate that are bent and connected together. The limiting sub-plate and the first backrest side plate are distributed laterally spaced apart. At least a portion of the first mounting bracket is located between the limiting sub-plate and one side of the bottom of the first backrest side plate.

[0011] According to some embodiments of the present invention, the first mounting bracket has a third limiting engagement portion and a fourth limiting engagement portion. The third limiting engagement portion is adapted to limit and press against one side of the connecting subplate when the backrest frame is rotated to its limit position in a first direction, and the fourth limiting engagement portion is adapted to limit and press against the other side of the connecting subplate when the backrest frame is rotated to its limit position in a second direction, wherein the first direction and the second direction are opposite.

[0012] According to some embodiments of the present invention, the backrest assembly includes a drive component and a drive link, the drive component being dynamically connected to the drive link, the drive link passing through a first adjuster and at least two second adjusters respectively, and the drive link being adapted to drive the backrest frame to rotate relative to the seat cushion frame during rotation via the first adjuster and at least two second adjusters.

[0013] The present invention also proposes a seat.

[0014] According to an embodiment of the present invention, a seat includes a seat cushion assembly and a backrest assembly as described in any one of the above claims. The seat cushion assembly is provided with a seat cushion frame. The first mounting bracket and the second mounting bracket are respectively connected to the two sides of the rear end of the seat cushion frame. The first backrest side plate of the backrest frame is rotatably connected to the first mounting bracket via the first angle adjuster. The second backrest side plate of the backrest frame is rotatably connected to the second mounting bracket via the angle adjuster assembly.

[0015] The present invention also proposes a vehicle.

[0016] The vehicle according to an embodiment of the present invention includes the seat described above.

[0017] The vehicle, the seat, and the aforementioned backrest assembly all possess the same advantages over the prior art, which will not be elaborated further here.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of the backrest assembly according to an embodiment of the present invention; Figure 2 This is a partial structural diagram of the backrest frame according to an embodiment of the present invention. Figure 1 ; Figure 3This is a schematic diagram of the structure of the second mounting bracket according to an embodiment of the present invention; Figure 4 This is a partial structural diagram of the backrest frame according to an embodiment of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the backrest assembly according to an embodiment of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the backrest assembly according to an embodiment of the present invention. Figure 2 .

[0020] Figure label: Backrest assembly 100, Backrest frame 1, first backrest side panel 11, limiting plate 12, connecting sub-plate 121, limiting sub-plate 122, second backrest side panel 13, side panel body 131, connecting bracket 132, first limiting part 133, upper crossbeam 14, lower crossbeam 15. First mounting bracket 2, third limiting fitting part 21, fourth limiting fitting part 22, first angle adjuster 3. Second mounting bracket 4, first sub-bracket 41, first limiting mating part 411, second limiting mating part 412, second sub-bracket 42, accommodating space 43, inner angle adjuster 5, outer angle adjuster 6. Drive assembly 7, drive component 71, drive linkage 72. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0025] The following is for reference. Figures 1-6 The backrest assembly 100 according to an embodiment of the present invention can ensure the user's riding comfort and improve the reliability of the use of the first angle adjuster 3 and the angle adjuster assembly, thereby ensuring the reliability of the adjustment of the backrest frame 1.

[0026] like Figures 1-6 As shown, a backrest assembly 100 according to an embodiment of the present invention includes: a backrest frame 1, a first mounting bracket 2, a second mounting bracket 4, and a drive assembly 7.

[0027] The backrest frame 1 includes a first backrest side plate 11 and a second backrest side plate 13 spaced apart laterally. A first mounting bracket 2 is rotatably connected to the first backrest side plate 11 via a first angle adjuster 3. A second mounting bracket 4 is rotatably connected to the second backrest side plate 13 via an angle adjuster assembly. The first mounting bracket 2 and the second mounting bracket 4 are respectively connected to the seat cushion frame. The angle adjuster assembly includes at least two second angle adjusters, which are respectively rotatably connected between the second mounting bracket 4 and the second backrest side plate 13. The drive assembly 7 is adapted to simultaneously drive the first angle adjuster 3 and the second angle adjuster to rotate the backrest frame 1 relative to the seat cushion frame.

[0028] The backrest assembly 100 is installed on the seat, and the seat also has a seat cushion assembly located below the seat. The backrest assembly 100 and the seat cushion assembly are rotatably connected, with the seat cushion assembly located below the backrest assembly 100. The occupant can sit on the seat cushion assembly and lean against the backrest assembly 100. The backrest assembly 100 can be angled according to the occupant's usage habits. A drive rocker arm, transmission link, and drive component 7 can be installed at the seat cushion assembly to adjust the seat's tilt angle. This allows the occupant to adjust the overall shape of the seat according to their own conditions and habits to achieve a comfortable sitting posture, meet different occupant needs, and improve comfort and riding experience.

[0029] Specifically, the backrest assembly 100 is provided with a backrest frame 1, which includes a first backrest side panel 11 and a second backrest side panel 13. The first backrest side panel 11 and the second backrest side panel 13 are arranged to extend vertically and are spaced apart horizontally. The backrest frame 1 also includes an upper crossbeam 14 and a lower crossbeam 15, both of which extend horizontally and are spaced apart vertically. The upper crossbeam 14 is located at the upper end of the backrest frame 1, and its two ends are respectively connected to the first backrest side panel 11 and the lower backrest side panel 13. The upper end of the second backrest side panel 13 is connected, so that the upper crossbeam 14 can provide lateral support between the upper ends of the first backrest side panel 11 and the second backrest side panel 13. The lower crossbeam 15 is located at the lower end of the backrest frame 1, and its two ends are connected to the lower ends of the first backrest side panel 11 and the second backrest side panel 13 respectively, so that the lower crossbeam 15 can provide lateral support between the lower ends of the first backrest side panel 11 and the second backrest side panel 13, thereby ensuring the overall structural strength of the backrest frame 1 and ensuring the stability of the support for the user.

[0030] The backrest assembly 100 is provided with a first mounting bracket 2 and a second mounting bracket 4. The first mounting bracket 2 and the second mounting bracket 4 are distributed laterally on both sides of the backrest frame 1, and both the first mounting bracket 2 and the second mounting bracket 4 are connected to the outer side of the backrest frame 1. The first mounting bracket 2 can be rotatably connected to the first backrest side plate 11 through the first angle adjuster 3, and the second mounting bracket 4 can be rotatably connected to the second backrest side plate 13 through the angle adjuster assembly. Both the first mounting bracket 2 and the second mounting bracket 4 are connected to the seat cushion frame, thereby adjusting the tilt angle of the backrest frame 1 relative to the seat cushion frame to meet different user seating needs and improve seating comfort.

[0031] Furthermore, the angle adjuster assembly is provided with at least two second angle adjusters, that is, the angle adjuster assembly can be provided with two, three or four second angle adjusters, etc. In this embodiment, two second angle adjusters are provided, and at least two second angle adjusters are respectively rotatably connected between the second mounting bracket 4 and the second backrest side plate 13, so that the second mounting bracket 4 can be rotatably connected to the second backrest side plate 13 through at least two second angle adjusters, so as to ensure the reliability of the use of the angle adjuster assembly and the reliability of the relative rotation of the second mounting bracket 4 and the second backrest side plate 13. In actual installation, the angle adjuster assembly can be set on the side of the backrest assembly 100 near the seat belt buckle, so as to avoid the force applied by the seat belt to the backrest assembly 100 during use, which would cause uneven force on both sides of the backrest assembly 100 and damage to the angle adjuster on one side of the backrest assembly 100, thereby ensuring the service life of the first angle adjuster 3 and the angle adjuster assembly.

[0032] In addition, the backrest assembly 100 is also provided with a drive assembly 7. The drive assembly 7 can be connected to the first backrest side plate 11 of the backrest frame 1 through connectors, etc. The drive assembly 7 is also poweredly connected to the first angle adjuster 3 and at least two second angle adjusters. When the drive assembly 7 is running, it can simultaneously drive the first angle adjuster 3 and at least two second angle adjusters to rotate the backrest frame 1 relative to the seat cushion frame, ensuring the synchronicity of movement on both sides. It can also reduce the number of drive assemblies 7, reduce installation costs, and improve weight reduction.

[0033] According to an embodiment of the present invention, the backrest assembly 100, by providing a first adjuster 3 and an adjuster assembly, allows the angle of the backrest frame 1 relative to the seat cushion frame to be adjusted, thereby meeting different user seating needs and improving seating comfort. Furthermore, the adjuster assembly is provided with at least two second adjusters, thereby reducing the force on each adjuster, extending the service life of the first adjuster 3 and the adjuster assembly, and ensuring the reliability of the use of the first adjuster 3 and the adjuster assembly. This, in turn, ensures the reliability of the adjustment of the backrest frame 1, resulting in better performance and a wider range of applications.

[0034] In some embodiments, the second backrest side panel 13 includes a side panel body 131 and a connecting bracket 132. The connecting bracket 132 is installed on the side of the bottom of the side panel body 131 away from the first backrest side panel 11. At least a portion of the connecting bracket 132 is distributed laterally spaced from the side panel body 131. At least two second angle adjusters are rotatably connected between the second mounting bracket 4 and the connecting bracket 132.

[0035] Specifically, the backrest frame 1 is provided with a second backrest side panel 13, and as shown in the figure. Figures 1-2 As shown, the second backrest side panel 13 is provided with a side panel body 131 and a connecting bracket 132. The side panel body 131 is constructed to extend in the vertical direction and is distributed laterally spaced from the first backrest side panel 11. The connecting bracket 132 can be installed on the side of the side panel body 131 away from the first backrest side panel 11 by means of connectors, etc. At least part of the connecting bracket 132 is distributed spaced apart from the backrest side panel.

[0036] Furthermore, the angle adjuster assembly is located between the connecting bracket 132 and the side plate body 131, thereby allowing at least two second angle adjusters of the angle adjuster assembly to be rotatably connected between the second mounting bracket 4 and the connecting bracket 132, so that there are at least two rotatable connection points between the second mounting bracket 4 and the connecting bracket 132. This ensures the reliability of the relative rotation between the second mounting bracket 4 and the connecting bracket 132. In addition, the provision of at least two second angle adjusters between the second mounting bracket 4 and the connecting bracket 132 reduces the force on each second angle adjuster, thereby extending the service life of the second angle adjuster and ensuring its reliability.

[0037] In some embodiments, the second mounting bracket 4 forms a receiving space 43, at least a portion of the connecting bracket 132 extends into the receiving space 43, and there are two second angle adjusters, namely an inner angle adjuster 5 and an outer angle adjuster 6. The inner angle adjuster 5 is rotatably connected between the inner side of the second mounting bracket 4 and the connecting bracket 132, and the outer angle adjuster 6 is rotatably connected between the outer side of the second mounting bracket 4 and the connecting bracket 132.

[0038] Specifically, the second mounting bracket 4 can be rotatably connected to the connecting bracket 132 via at least two second angle adjusters, and as... Figure 3 As shown, the second mounting bracket 4 forms a receiving space 43, one side of which is open, allowing at least a portion of the connecting bracket 132 to extend into the receiving space 43. This allows both sides of the connecting bracket 132 to correspond to the inner walls of both sides of the receiving space 43, and as... Figure 1 As shown, there are two second angle adjusters, namely an inner angle adjuster 5 and an outer angle adjuster 6. The inner angle adjuster 5 and the outer angle adjuster 6 are distributed laterally, and the inner angle adjuster 5 is located on the side of the outer angle adjuster 6 closer to the side plate body 131.

[0039] Furthermore, when at least a portion of the connecting bracket 132 extends into the accommodating space 43, the inner adjusting device 5 is rotatably connected between the inner side of the second mounting bracket 4 and the connecting bracket 132, and the outer adjusting device 6 is rotatably connected between the outer side of the second mounting bracket 4 and the connecting bracket 132. This allows the two side walls of the accommodating space 43 to be rotatably connected to the connecting bracket 132 via a second adjusting device, thereby improving the reliability of the connection between the connecting bracket 132 and the second mounting bracket 4 and ensuring the reliability of the power transmission of the two second adjusting devices, thus ensuring the adjustment reliability of the backrest assembly 100 and improving the user's comfort.

[0040] In some embodiments, the second mounting bracket 4 includes a first sub-bracket 41 and a second sub-bracket 42, which are connected and together define an accommodating space 43. The first sub-bracket 41 is located on the side of the second sub-bracket 42 away from the backrest frame 1. An outer angle adjuster 6 is rotatably connected between the outer side of the first sub-bracket 41 and the connecting bracket 132, and an inner angle adjuster 5 is rotatably connected between the inner side of the second sub-bracket 42 and the connecting bracket 132.

[0041] Specifically, the second mounting bracket 4 can be rotatably connected to the connecting bracket 132 via the second angle adjuster, and as... Figure 3As shown, the second mounting bracket 4 is provided with a first sub-bracket 41 and a second sub-bracket 42. The first sub-bracket 41 and the second sub-bracket 42 are distributed laterally, and the first sub-bracket 41 is located on the side of the second sub-bracket 42 away from the side plate body 131. The first sub-bracket 41 and the second sub-bracket 42 can be connected by welding or other means and jointly define the receiving space 43. In this way, at least a part of the connecting bracket 132 can extend between the first sub-bracket 41 and the second sub-bracket 42, so that the first sub-bracket 41 is located outside the connecting bracket 132 and the second sub-bracket 42 is located inside the connecting bracket 132.

[0042] Furthermore, there are two second angle adjusters, namely an inner angle adjuster 5 and an outer angle adjuster 6. The first sub-bracket 41 can be rotatably connected to the outer side of the connecting bracket 132 through the outer angle adjuster 6, and the second sub-bracket 42 can be rotatably connected to the inner side of the connecting bracket 132 through the inner angle adjuster 5. This allows the second mounting bracket 4 to be rotatably connected to the connecting bracket 132 at two points along the lateral direction, thereby ensuring the reliability of the connection between the second mounting bracket 4 and the connecting bracket 132, reducing the force on each second angle adjuster, and ensuring operational stability.

[0043] In some embodiments, the connecting bracket 132 is provided with a first limiting portion 133, and the second mounting bracket 4 is formed with a first limiting engagement portion 411 and a second limiting engagement portion 412. The first limiting portion 133 is adapted to limit and press against the first limiting engagement portion 411 when the backrest frame 1 rotates to the limit position in the first direction, and the first limiting portion 133 is adapted to limit and press against the second limiting engagement portion 412 when the backrest frame 1 rotates to the limit position in the second direction. The first direction and the second direction are opposite.

[0044] Specifically, the connecting bracket 132 and the second mounting bracket 4 are rotatably connected through an angle adjuster assembly. The connecting bracket 132 is provided with a first limiting part 133, which can be configured as a limiting plate, a limiting block, or a limiting post. The first limiting part 133 is located on the side of the connecting bracket 132 away from the side plate body 131 and protrudes outward. The second mounting bracket 4 forms a first limiting mating part 411 and a second limiting mating part 412. The second mounting bracket 4 is provided with a first sub-bracket 41 and a second sub-bracket 42. The first sub-bracket 41 is located outside the second sub-bracket 42. That is, both the first limiting mating part 411 and the second limiting mating part 412 can be provided on the first sub-bracket 41. The first limiting mating part 411 and the second limiting mating part 412 can be configured as a limiting protrusion or a limiting post.

[0045] In this embodiment, as Figures 2-3As shown, the first limiting part 133 is constructed as a limiting plate protruding outward in the lateral direction. The first limiting mating part 411 and the second limiting mating part 412 are both constructed as limiting protrusions. When the driving assembly 7 drives the inner adjusting device 5 and the outer adjusting device 6 to rotate the backrest frame 1 relative to the seat cushion frame in the first direction to the limit position, the first limiting part 133 can press against the first limiting mating part 411. And when the driving assembly 7 drives the inner adjusting device 5 and the outer adjusting device 6 to rotate the backrest frame 1 relative to the seat cushion frame in the second direction to the limit position, the first limiting part 133 can press against the second limiting mating part 412. In this way, the backrest frame 1 can be prevented from rotating too much forward or backward, which could cause injury to the user and ensure safety during use.

[0046] The first direction and the second direction are set to be opposite. That is, when the first direction is set to rotate forward relative to the seat cushion frame 1, the second direction is set to rotate backward relative to the seat cushion frame 1, or when the first direction is set to rotate backward relative to the seat cushion frame 1, the second direction is set to rotate forward relative to the seat cushion frame 1.

[0047] In some embodiments, a limiting plate 12 is provided on the outer side of the bottom of the first backrest side plate 11. The limiting plate 12 is formed with a connecting sub-plate 121 and a limiting sub-plate 122 that are bent and connected. The limiting sub-plate 122 and the first backrest side plate 11 are distributed laterally spaced apart. At least a portion of the first mounting bracket 2 is located between the limiting sub-plate 122 and one side of the bottom of the first backrest side plate 11.

[0048] Specifically, the backrest frame 1 is provided with a first backrest side panel 11 and a second backrest side panel 13 that are spaced apart laterally, and as shown in the figure... Figure 4 As shown, a limiting plate 12 is also provided at the bottom of the first backrest side panel 11. The limiting plate 12 can be connected to the bottom of the first backrest side panel 11 through a connector or the like. The limiting plate 12 is located on the side of the first backrest side panel 11 away from the second backrest side panel 13. The limiting plate 12 is provided with a connecting sub-plate 121 and a limiting sub-plate 122. The connecting sub-plate 121 extends at least partly in the lateral direction. One end of the connecting sub-plate 121 is connected to the first backrest side panel 11 through a connector or the like, and the other end is bent and connected to the limiting sub-plate 122, so that the limiting sub-plate 122 and the first backrest side panel 11 are distributed laterally spaced apart. At least part of the first mounting bracket 2 can extend between the limiting sub-plate 122 and the first backrest side panel 11, so that the limiting sub-plate 122 and the first backrest side panel 11 can limit the first mounting bracket 2 in the lateral direction, ensuring the reliability of the installation of the first mounting bracket 2.

[0049] In some embodiments, the first mounting bracket 2 is formed with a third limiting engagement portion 21 and a fourth limiting engagement portion 22. The third limiting engagement portion 21 is adapted to limit and press against one side of the connecting subplate 121 when the backrest frame 1 rotates to the limit position in the first direction, and the fourth limiting engagement portion 22 is adapted to limit and press against the other side of the connecting subplate 121 when the backrest frame 1 rotates to the limit position in the second direction. The first direction and the second direction are opposite.

[0050] Specifically, the second mounting bracket 4 has a third limiting engagement portion 21 and a fourth limiting engagement portion 22. The third limiting engagement portion 21 and the fourth limiting engagement portion 22 can be configured as limiting protrusions or limiting posts, etc. In this embodiment, for example... Figure 1 As shown, both the third limiting engagement part 21 and the fourth limiting engagement part 22 are constructed as limiting protrusions. When the drive assembly 7 drives the first angle adjuster 3 to rotate the backrest frame 1 relative to the seat cushion frame in the first direction to the limit position, the connecting subplate 121 can press against the third limiting engagement part 21. And when the drive assembly 7 drives the first angle adjuster 3 to rotate the backrest frame 1 relative to the seat cushion frame in the second direction to the limit position, the connecting subplate 121 can press against the fourth limiting engagement part 22.

[0051] In this way, the backrest frame 1 can avoid excessive forward or backward rotation, which could cause injury to the user and ensure safety. Furthermore, the third limiting engagement part 21 and the fourth limiting engagement part 22 can engage with the connecting subplate 121, and the first limiting part 133 can engage with the first limiting engagement part 411 and the second limiting engagement part 412. This can distribute the force to the connecting subplate 121 and the first limiting part 133, thereby extending the service life of the connecting subplate 121 and the first limiting part 133 and ensuring the reliability of the limiting mechanism.

[0052] The first direction and the second direction are set to be opposite. That is, when the first direction is set to rotate forward relative to the seat cushion frame 1, the second direction is set to rotate backward relative to the seat cushion frame 1, or when the first direction is set to rotate backward relative to the seat cushion frame 1, the second direction is set to rotate forward relative to the seat cushion frame 1.

[0053] In some embodiments, the drive assembly 7 includes a drive member 71 and a drive link 72. The drive member 71 is poweredly connected to the drive link 72. The drive link 72 passes through the first adjuster 3 and at least two second adjusters respectively. The drive link 72 is adapted to drive the backrest frame 1 to rotate relative to the seat cushion frame through the first adjuster 3 and at least two second adjusters when rotating.

[0054] Specifically, the backrest assembly 100 is equipped with a drive component 7, such as... Figure 1As shown, the drive assembly 7 is provided with a drive member 71 and a drive link 72. The drive member 71 can be installed on the first backrest side plate 11 or the second backrest side plate 13 via a connector or the like. In this embodiment, the drive member 71 is installed on the first backrest side plate 11. The drive member 71 can be a drive motor or the like. The drive link 72 extends laterally. The drive member 71 can be poweredly connected to the drive link 72 via a gear set or the like. The gear set can be provided with two meshing bevel gears. The output end of the drive member 71 is poweredly connected to one of the bevel gears, and the drive link 72 is poweredly connected to the other bevel gear. This allows the direction and magnitude of the output power of the drive member 71 to be changed to accommodate different models of the drive member 71, thus improving the flexibility of the setup.

[0055] Furthermore, the two ends of the drive linkage 72 in the lateral direction can be connected to the first angle adjuster 3 and the angle adjuster assembly respectively. That is, one end of the drive linkage 72 can be inserted into the first angle adjuster 3, and the other end can be inserted into the inner angle adjuster 5 and the outer angle adjuster 6 respectively. Thus, the drive member 71 can drive the first angle adjuster 3, the inner angle adjuster 5 and the outer angle adjuster 6 to operate simultaneously through the drive linkage 72, so as to ensure the synchronicity of the operation of the first angle adjuster 3, the inner angle adjuster 5 and the outer angle adjuster 6, thereby ensuring the consistency of the movement of both sides of the backrest assembly 100, and also reducing the number of drive members 71, reducing the installation cost and improving weight reduction.

[0056] The present invention also proposes a seat.

[0057] According to an embodiment of the present invention, a seat includes a seat cushion assembly and a backrest assembly 100 of any of the above. The seat cushion assembly is provided with a seat cushion frame. A first mounting bracket 2 and a second mounting bracket 4 are respectively connected to the two sides of the rear end of the seat cushion frame. The first backrest side plate 11 of the backrest frame 1 is rotatably connected to the first mounting bracket 2 through a first angle adjuster 3. The second backrest side plate 3 of the backrest frame 1 is rotatably connected to the second mounting bracket 4 through an angle adjuster assembly.

[0058] Specifically, the seat is provided with a seat cushion assembly and a backrest assembly 100. The seat cushion assembly is located below the seat. The first backrest side plate 11 of the backrest frame 1 is rotatably connected to the first mounting bracket 2 via the first angle adjuster 3. The second backrest side plate 3 of the backrest frame 1 is rotatably connected to the second mounting bracket 4 via the angle adjuster assembly. The first mounting bracket 2 and the second mounting bracket 4 can be connected to the two sides of the rear end of the seat cushion frame, thereby allowing the backrest assembly 100 to be rotatably connected to the seat cushion assembly. The seat cushion assembly is located below the backrest assembly 100. The occupant can sit on the seat cushion assembly and lean against the backrest assembly 100. The backrest assembly 100 can be angled according to the occupant's usage habits.

[0059] Furthermore, a drive rocker arm, transmission link, and drive assembly can be installed at the seat cushion assembly. The seat cushion frame of the seat cushion assembly is mounted on top of the mounting bracket. The drive assembly can be mounted on the seat cushion frame. The drive rocker arm is rotatably mounted on the seat cushion frame and is poweredly connected to the drive assembly. The transmission link is rotatably connected between the drive rocker arm and the mounting bracket. Thus, when the drive assembly drives the drive rocker arm to rotate, the transmission link can adjust the tilt angle of the seat, allowing the occupant to adjust the overall shape of the seat according to their own conditions and habits to achieve a comfortable sitting posture, meet different needs of the occupant, and improve comfort and riding experience.

[0060] According to an embodiment of the present invention, the seat is provided with a backrest assembly 100. The backrest assembly 100 is provided with a first adjuster 3 and an adjuster assembly, which allows the angle of the backrest frame 1 relative to the seat cushion frame to be adjusted, thereby meeting different user seating needs and improving seating comfort. The adjuster assembly is provided with at least two second adjusters, thereby reducing the force on each adjuster, extending the service life of the first adjuster 3 and the adjuster assembly, and ensuring the reliability of the use of the first adjuster 3 and the adjuster assembly. This ensures the reliability of the adjustment of the backrest frame 1, resulting in better performance and a wider range of applications.

[0061] The present invention also proposes a vehicle.

[0062] The vehicle according to an embodiment of the present invention includes the seat described above.

[0063] According to an embodiment of the present invention, a vehicle is provided with a seat. The seat back assembly 100 is provided with a first adjuster 3 and an adjuster assembly, which allows the angle of the backrest frame 1 relative to the seat cushion frame to be adjusted, thereby meeting different user seating needs and improving seating comfort. The adjuster assembly is provided with at least two second adjusters, thereby reducing the force on each adjuster, extending the service life of the first adjuster 3 and the adjuster assembly, and ensuring the reliability of the use of the first adjuster 3 and the adjuster assembly. This, in turn, ensures the reliability of the adjustment of the backrest frame 1, resulting in better performance and a wider range of applications.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A backrest assembly, characterized in that, include: Backrest frame (1), the backrest frame (1) includes a first backrest side panel (11) and a second backrest side panel (3) spaced apart laterally. The first mounting bracket (2) and the second mounting bracket (4) are rotatably connected to the first backrest side panel (11) via the first angle adjuster (3), and the second mounting bracket (4) is rotatably connected to the second backrest side panel (3) via the angle adjuster assembly. The first mounting bracket (2) and the second mounting bracket (4) are used to connect to the seat cushion frame respectively. The drive assembly (7) includes at least two second angle adjusters, which are rotatably connected between the second mounting bracket (4) and the second backrest side plate (3). The drive assembly (7) is adapted to simultaneously drive the first angle adjuster (3) and the second angle adjuster to rotate the backrest frame (1) relative to the seat cushion frame.

2. The backrest assembly according to claim 1, characterized in that, The second backrest side panel (3) includes a side panel body (131) and a connecting bracket (132). The connecting bracket (132) is installed on the side of the side panel body (131) away from the first backrest side panel (11). At least a portion of the connecting bracket (132) is distributed laterally spaced from the side panel body (131). At least two second angle adjusters are rotatably connected between the second mounting bracket (4) and the connecting bracket (132).

3. The backrest assembly according to claim 2, characterized in that, The second mounting bracket (4) forms a receiving space (43), at least a portion of the connecting bracket (132) extends into the receiving space (43), and there are two second angle adjusters, namely an inner angle adjuster (5) and an outer angle adjuster (6), the inner angle adjuster (5) is rotatably connected between the inner side of the second mounting bracket (4) and the inner side of the connecting bracket (132), and the outer angle adjuster (6) is rotatably connected between the outer side of the second mounting bracket (4) and the outer side of the connecting bracket (132).

4. The backrest assembly according to claim 3, characterized in that, The second mounting bracket (4) includes a first sub-bracket (41) and a second sub-bracket (42), the first sub-bracket (41) and the second sub-bracket (42) being connected and jointly defining the accommodating space (43); The first sub-support (41) is located on the side of the second sub-support (42) away from the backrest frame (1), the outer angle adjuster (6) is rotatably connected between the outer side of the first sub-support (41) and the outer side of the connecting bracket (132), and the inner angle adjuster (5) is rotatably connected between the inner side of the second sub-support (42) and the inner side of the connecting bracket (132).

5. The backrest assembly according to claim 2, characterized in that, The connecting bracket (132) is provided with a first limiting part (133), and the second mounting bracket (4) is formed with a first limiting mating part (421) and a second limiting mating part (422). The first limiting part (133) is adapted to limit and press against the first limiting mating part (421) when the backrest frame (1) rotates to the limit position in a first direction, and the first limiting part (133) is adapted to limit and press against the second limiting mating part (422) when the backrest frame (1) rotates to the limit position in a second direction. The first direction and the second direction are opposite.

6. The backrest assembly according to claim 1, characterized in that, A limiting plate (2) is provided on the outer side of the bottom of the first backrest side plate (11). The limiting plate (2) is formed with a connecting sub-plate (121) and a limiting sub-plate (122) that are bent and connected. The limiting sub-plate (122) and the first backrest side plate (11) are distributed laterally. At least a portion of the first mounting bracket (2) is located between the limiting sub-plate (122) and one side of the bottom of the first backrest side plate (11).

7. The backrest assembly according to claim 6, characterized in that, The first mounting bracket (2) has a third limiting engagement part (21) and a fourth limiting engagement part (22). The third limiting engagement part (21) is adapted to limit and press against one side of the connecting subplate (121) when the backrest frame (1) rotates to the limit position in the first direction, and the fourth limiting engagement part (22) is adapted to limit and press against the other side of the connecting subplate (121) when the backrest frame (1) rotates to the limit position in the second direction. The first direction and the second direction are opposite.

8. The backrest assembly according to claim 1, characterized in that, The drive assembly (7) includes a drive member (71) and a drive link (72). The drive member (71) is poweredly connected to the drive link (72). The drive link (72) passes through the first adjuster (3) and at least two second adjusters respectively. The drive link (72) is adapted to drive the backrest frame (1) to rotate relative to the seat cushion frame through the first adjuster (3) and at least two second adjusters when rotating.

9. A type of seat, characterized in that, The backrest assembly includes a seat cushion assembly and a backrest assembly (100) according to any one of claims 1-8. The seat cushion assembly is provided with a seat cushion frame. The first mounting bracket (2) and the second mounting bracket (4) are respectively connected to the two sides of the rear end of the seat cushion frame. The first backrest side plate (11) of the backrest frame (1) is rotatably connected to the first mounting bracket (2) through the first angle adjuster (3). The second backrest side plate (3) of the backrest frame (1) is rotatably connected to the second mounting bracket (4) through the angle adjuster assembly.

10. A vehicle, characterized in that, Includes the seat as described in claim 9.

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