Backrest mounting structure and vehicle

Abstract

The embodiment of the application relates to the technical field of vehicle equipment, and discloses a backrest mounting structure and a vehicle, the backrest mounting structure comprising a connecting beam, at least two side frames, a plurality of support frames and a mounting frame; the at least two side frames are connected to two ends of the connecting beam respectively, each side frame has a side fixed end which is arranged at intervals with the connecting beam; the plurality of support frames are connected to the connecting beam and located between the two side frames, each support frame has a support fixed end and a mounting end, the plurality of support fixed ends are arranged at intervals and used for being fixed to a vehicle body, and the plurality of support fixed ends are located on the same side of the side fixed ends on the connecting beam, and the plurality of mounting ends are located on a side of the connecting beam away from the support fixed ends; the mounting frame is connected to the plurality of mounting ends and used for mounting a backrest. The application can realize multi-path dispersion transmission of backrest stress, the support frames are located between the two side frames, the middle part of the connecting beam is supported, the torsion of the connecting beam is reduced, and the support strength for the backrest is effectively improved.

Description

Technical Field

[0001] This application relates to the field of vehicle equipment technology, and in particular to a backrest mounting structure and a vehicle. Background Technology

[0002] Most electric vehicles are rear-wheel drive, and the electric drive layout of rear-wheel drive models results in a significant height difference between the front and rear of the rear floor, meaning the rear floor height difference is relatively large. Currently, to improve the utilization of interior space, the rear seats are usually installed at the location of this height difference in the rear floor.

[0003] When installing the rear seat backrests, the traditional installation method relies solely on fixing the connecting beams at both ends of the vehicle's side panels in the Y-direction (lateral direction) to the backrests, which are then mounted on the connecting beams via backrest brackets. However, in rear-wheel-drive vehicles, the significant height difference between the front and rear of the rear floor results in a large span of the connecting beams used for backrest installation, leading to poor structural strength and difficulty in stably supporting the backrests. Utility Model Content

[0004] In view of this, the present application provides a backrest installation structure and vehicle to solve the technical problem in the above-mentioned related technologies that when installing the backrest of the rear seat, the vehicle body side wall is used to fix the connecting beam at both ends in the Y direction. However, in rear-wheel drive vehicles, due to the significant difference in height between the front and rear of the rear floor, the connecting beam for backrest installation has a large span, poor structural strength, and is difficult to stably support the backrest.

[0005] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0006] A first aspect of this application provides a backrest mounting structure, which includes:

[0007] Connecting beams;

[0008] At least two side frames are provided, each of which is connected to both ends of the connecting beam. Each side frame has a side fixing end that is spaced apart from the connecting beam and is used to fix it to the vehicle body.

[0009] Multiple support frames are connected to the connecting beam and located between two side frames. Each support frame has a support fixing end and a mounting end. The multiple support fixing ends are spaced apart and used to fix to the vehicle body, and are located on the same side of the connecting beam as the side fixing ends. The multiple mounting ends are located on the side of the connecting beam away from the support fixing ends.

[0010] Install the frame, connect multiple mounting ends, and use it to install the backrest.

[0011] In the backrest mounting structure provided in this application embodiment, the backrest is mounted to the mounting ends of multiple support frames via a mounting frame. This allows the force on the backrest to be distributed and transmitted to the connecting beam via the mounting end and multiple support frames, then distributed to the two side frames via the connecting beam, and finally transmitted to the vehicle body. Alternatively, the force on the backrest can also be directly distributed and transmitted to the vehicle body via the multiple support frames. This achieves multi-path force distribution and transmission to the backrest. Simultaneously, the support frames, located between the two side frames, support the middle of the connecting beam, reducing the torque on the connecting beam and effectively improving the support strength for the backrest.

[0012] In some embodiments of this application, a plurality of the support fixing ends are spaced apart along the extension direction of the connecting beam.

[0013] In some embodiments of this application, at least one of the support frames is provided with a weight-reducing hole, which is located between the support fixing end and the mounting end.

[0014] In some embodiments of this application, the backrest mounting structure further includes at least one child seat hook and at least one sensor bracket, both of which are mounted on the connecting beam and spaced apart along the extension direction of the connecting beam.

[0015] In some embodiments of this application, the sensor bracket is provided with a plurality of protective flanges at its end edge. The plurality of protective flanges are arranged at intervals along the circumference of the sensor bracket and are located on the same side of the sensor bracket.

[0016] In some embodiments of this application, the mounting frame includes a connecting frame and a rotating frame. The connecting frame connects to a plurality of mounting ends, and the rotating frame is rotatably mounted on the connecting frame with its rotation axis parallel to the extension direction of the connecting beam, and is used to mount the backrest.

[0017] In some embodiments of this application, the backrest mounting structure further includes an anti-tipping bracket, which is mounted on the connecting beam to block the backrest and restrict the backrest from flipping away from the connecting beam along with the rotating frame.

[0018] In some embodiments of this application, multiple rotating frames are provided, the arrangement direction of the multiple rotating frames is parallel to the extension direction of the connecting beam, and each is independently equipped with a backrest. Each rotating frame has a folded position close to the connecting beam and an upright position away from the connecting beam when rotating.

[0019] The backrest mounting structure also includes a limiting member disposed on the connecting frame and used to block the multiple rotating frames when they are in the reclined position, thereby restricting the multiple rotating frames from continuing to move toward the connecting beam and making the side of the multiple rotating frames away from the connecting beam flush.

[0020] In some embodiments of this application, the end of the rotating frame that is rotatably connected to the connecting frame is the rotating end;

[0021] The limiting member is located on the side of the rotating end near the connecting beam, and stops the rotating frame when the rotating frame is in the folded position.

[0022] A second aspect of this application provides a vehicle, which includes a vehicle body and a backrest mounting structure as described above;

[0023] The side fixing end and the support fixing end of the backrest mounting structure are both fixed to the vehicle body. Attached Figure Description

[0024] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0025] Figure 1 A front view of a backrest mounting structure provided in an embodiment of this application;

[0026] Figure 2 for Figure 1 A three-dimensional view of the backrest installation structure;

[0027] Figure 3 for Figure 1 A schematic diagram of the sensor bracket;

[0028] Figure 4 for Figure 1 Left view of the backrest mounting structure;

[0029] Figure 5 for Figure 4 A partial schematic diagram of the backrest mounting structure;

[0030] Figure 6 for Figure 5 A cross-sectional view of the installed skeleton.

[0031] Figure label:

[0032] 10. Connecting beams;

[0033] 20. Side frame; 21. Side fixing end;

[0034] 30. Support frame; 30a. Weight reduction hole; 31. Support fixing end; 32. Mounting end;

[0035] 40. Mounting frame; 41. Connecting frame; 42. Rotating frame; 421. Rotating end; 421a. Snap-fit ​​notch; 422. Movable end; 43. Assembly plate; 44. Assembly parts; 44a. Mounting hole; 45. Positioning block; 46. Rotating shaft;

[0036] 50. Child seat hooks;

[0037] 60. Sensor bracket; 61. Protective flange;

[0038] 70. Anti-flip bracket;

[0039] 80. Limiting component; 81. Limiting pin. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0041] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0042] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0043] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0044] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0045] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0046] In the aforementioned prior art, when installing the rear seat backrest, the connecting beams are fixed only at both ends of the vehicle's side panels in the Y-direction (lateral direction). However, in rear-wheel-drive vehicles, the significant height difference between the front and rear of the rear floor results in a large span of the connecting beams for backrest installation, leading to poor structural strength and difficulty in stably supporting the backrest. This problem arises because the connecting beams are only connected to the two ends of the vehicle's side panels in the Y-direction, causing the backrest to be suspended in the middle when installed. Combined with the significant height difference between the front and rear of the rear floor in rear-wheel-drive vehicles, this results in a large torque in the middle of the connecting beams, thus failing to stably support the backrest.

[0047] For the above issues, please refer to section 1 and... Figure 2 This application provides a backrest mounting structure and a vehicle. The backrest mounting structure includes a connecting beam 1, at least two side frames 20, multiple support frames 30, and a mounting frame 40. The at least two side frames 20 are respectively connected to both ends of the connecting beam 1. Each side frame 20 has a side fixing end 21 spaced apart from the connecting beam 1, which is used to fix it to the vehicle body. The multiple support frames 30 are connected to the connecting beam 1 and located between the two side frames 20. Each support frame 30 has a support fixing end 31 and a mounting end 32. The multiple support fixing ends 31 are spaced apart and used to fix it to the vehicle body, and are located on the same side of the connecting beam 1 as the side fixing ends 21. The multiple mounting ends 32 are located on the side of the connecting beam 1 away from the support fixing ends 31. The mounting frame 40 connects the multiple mounting ends 32 and is used to mount the backrest.

[0048] In the backrest mounting structure provided in this application embodiment, the backrest is mounted to the mounting ends 32 of multiple support frames 30 via the mounting frame 40. This allows the force on the backrest to be distributed and transmitted to the connecting beam 1 via the mounting end 32 and the multiple support frames 30, then distributed to the two side frames 20 via the connecting beam 1, and finally transmitted to the vehicle body. Alternatively, the force on the backrest can also be directly distributed and transmitted to the vehicle body via the multiple support frames 30. This achieves multi-path force distribution and transmission to the backrest. Simultaneously, the support frames 30, located between the two side frames 20, support the middle of the connecting beam 1, reducing the torque on the connecting beam 1 and effectively improving the support strength for the backrest.

[0049] It should be noted that the number of supporting frames 30 can be two, three, four, or other numbers. Specifically, in this scheme, there are two supporting frames 30. In addition, the number of side frames 20 can be two, three, four, or other numbers. Specifically, in this scheme, there are two side frames 20, which are spaced apart at both ends of the connecting beam 1.

[0050] In one embodiment, a plurality of support fixing ends 31 are spaced apart along the extension direction of the connecting beam 1.

[0051] In this embodiment, multiple support fixing ends 31 are arranged in the same direction as the connecting beam 1, which means that multiple support fixing ends 31 are arranged along the length direction of the seat and backrest. On the one hand, this improves the ability to distribute force at various points along the length direction of the backrest. On the other hand, it allows the seat, backrest, and multiple support fixing ends 31 to be arranged along the Y-direction of the vehicle body, so that the support fixing ends 31 can make full use of the space under the seat and avoid occupying extra space by arranging multiple support fixing ends 31 along the front and rear of the vehicle body, making the backrest installation structure relatively compact.

[0052] In one embodiment, at least one support frame 30 is provided with a weight reduction hole 30a, which is located between the support fixing end 31 and the mounting end 32.

[0053] In this embodiment, weight-reducing holes 30a are arranged on at least one support frame 30 to reduce the overall weight of the backrest installation structure while ensuring the support strength for the backrest, making it easier for operators to handle and assemble, and also contributing to the lightweight design of the entire vehicle. The weight-reducing holes 30a extend vertically and are arranged in an elongated shape.

[0054] In one embodiment, the backrest mounting structure further includes at least one child seat hook 50 and at least one sensor bracket 60, both of which are mounted on the connecting beam 1 and spaced apart along the extension direction of the connecting beam 1.

[0055] In this embodiment, a child seat hook 50 and a sensor bracket 60 are integrated on the connecting beam 1, enabling the backrest mounting structure to highly integrate the installation functions of each component, thus improving its practicality. It should be noted that in this embodiment, the child seat hook 50 is a U-shaped hook and is welded to the connecting beam 1.

[0056] In one embodiment, please refer to Figure 3 Multiple protective flanges 61 are provided at the end edge of the sensor bracket 60. The multiple protective flanges 61 are arranged at intervals along the circumference of the sensor bracket 60 and are located on the same side of the sensor bracket 60.

[0057] In this embodiment, a protective flange 61 is provided at the end edge of the sensor bracket 60 to protect the wiring harness of components such as the sensor, thereby preventing the sharp end edge of the sensor bracket 60 from causing wear to the wiring harness. Similarly, in this solution, the sensor bracket 60 is welded to the connecting beam 1.

[0058] In one embodiment, please refer to Figure 4 and Figure 5 The mounting frame 40 includes a connecting frame 41 and a rotating frame 42. The connecting frame 41 connects to multiple mounting ends 32. The rotating frame 42 is rotatably mounted on the connecting frame 41, and its rotation axis is parallel to the extension direction of the connecting beam 1, and is used to mount the backrest.

[0059] In this embodiment, the backrest is mounted on the rotating frame 42, allowing the backrest to rotate with the rotating frame 42, thereby enabling the backrest to be folded down and stood up, improving practicality. It should be noted that in this design, the rotating frame 42 and the connecting frame 41 are rotatably connected via a rotating shaft 46. Furthermore, the connecting frame 41 is integrally connected to the support frame.

[0060] In one embodiment, the backrest mounting structure further includes an anti-rollover bracket 70, which is mounted on the connecting beam 1 to stop the backrest and limit the backrest from rolling away from the connecting beam 1 along with the rotating frame 42.

[0061] In this embodiment, after the backrest rotates to the upright position following the rotating frame 42, the anti-tipping bracket 70 can limit the backrest from continuing to rotate in a direction away from the seat cushion, thus limiting the backrest's movement. It should be noted that in this design, the anti-tipping bracket 70 is welded to the connecting beam 1.

[0062] Furthermore, it should be noted that rear seat backs are typically a combination of a four-part backrest and a six-part backrest. In existing technology, when the seat backs are folded down, the gap between the four-part and six-part backrest covers exceeds the design tolerance, affecting the customer's aesthetic perception and user experience. This problem arises because, when traditional rear seat backs are folded forward, the lack of a limiting device means the pivot bracket (46) may rotate excessively due to manufacturing tolerances or assembly errors. This results in a large gap between the four-part and six-part backrest covers, meaning the height difference at the cover seam exceeds the design tolerance.

[0063] In one embodiment, multiple rotating frames 42 are provided, and the arrangement direction of the multiple rotating frames 42 is parallel to the extension direction of the connecting beam 1. Each rotating frame 42 is independently equipped with a backrest. When rotating, each rotating frame 42 has a folded position close to the connecting beam 1 and an upright position away from the connecting beam 1. The backrest mounting structure also includes a limiting member 80, which is provided on the connecting frame 41 and is used to stop the multiple rotating frames 42 when they are in the folded position, so as to restrict the multiple rotating frames 42 from continuing to move toward the connecting beam 1 and to make the side of the multiple rotating frames 42 away from the connecting beam 1 flush.

[0064] In this embodiment, the backrest limiting structure uses a limiting member 80 on the connecting frame 41. During assembly, when the rotating frame 42 rotates to the reclining position, the limiting member 80 simultaneously stops multiple rotating frames 42. If the side of the multiple rotating frames 42 furthest from the seat cushion is flush, it is considered a good product, and the subsequent installation of the seat cushion and backrest can proceed. If the side of the multiple rotating frames 42 furthest from the seat cushion is not flush, the contact area between the rotating frame 42 and the limiting member 80 can be corrected by cutting until the side of the multiple rotating frames 42 furthest from the seat cushion is flush. This ensures that the seam allowance of the four-quarter and six-quarter backrest covers is within the DTS (Design Tolerance Specification) tolerance range, improving appearance quality and user experience.

[0065] Meanwhile, because the relative positional tolerance of the backrest mounting hole 44a of the rotating frame 42 is small, there are many parts involved and the dimensional chain is long. Moreover, the deformation caused by the double-shielded welding process is large, making it difficult to ensure accuracy. However, when using this solution, the cutting edge of the flange that contacts the limiting part 80 of the rotating frame 42 can be manually repaired to meet the design tolerance requirements. This avoids the parts being scrapped due to unqualified seam breakage accuracy after welding, thus saving rectification costs and time.

[0066] It should be noted that the vehicle body has a reserved seat cushion position in front of the connecting beam 1 for seat cushion installation, and in this design, the support frame 30 is placed behind the connecting beam 1. Furthermore, it should be understood that the length direction of the seat cushion is the same as the arrangement direction of the multiple rotating frames 42. The number of rotating frames 42 can be set to two, three, four, or other numbers, and the limiting member 80 can simultaneously stop multiple rotating frames 42 in the folded-down position. Specifically, in this embodiment, the number of rotating frames 42 is set to two, one for installing a quarter-backrest and the other for installing a six-quarter-backrest.

[0067] In one embodiment, the end of the rotating frame 42 that is rotatably connected to the connecting frame 41 is the rotating end 421; the limiting member 80 is provided on the side of the rotating end 421 near the connecting beam 1, and stops the rotating frame 42 when it is in the folded position.

[0068] In this embodiment, when the rotating frame 42 rotates to the reclining position, the limiting member 80 presses against the side of the rotating end 421 closest to the connecting beam 1, thereby restricting the movable end 422 from continuing to rotate toward the connecting beam 1, and causing the sides of the two backrest frames away from the seat cushion to be aligned. Furthermore, because the rotating end 421 rotates around its axis, the rotational stroke of the rotating end 421 relative to the connecting frame 41 is relatively small. Therefore, setting the limiting member 80 corresponding to the rotating end 421 can reduce the volume of the limiting member 80, avoiding the occupancy of excessive space when multiple backrest frames are simultaneously blocked by the limiting member 80.

[0069] It should be noted that, in one embodiment, the limiting member 80 is set in the form of a steel wire cable, with one end of the steel wire cable connected to the vehicle body and the other end connected to the side of the rotating frame 42 away from the connecting beam 1. The entire steel wire cable is placed on the side of the rotating frame 42 away from the connecting beam 1, thereby preventing the rotating frame 42 from continuing to rotate toward the connecting beam 1 when it is in the folded position.

[0070] In another embodiment, the limiting member 80 is configured as a plurality of stop blocks, which are arranged one-to-one with a plurality of rotating frames 42. Each stop block is placed on the side of the corresponding rotating frame 42 near the seat cushion and adjacent to the rotating end 421 of the corresponding rotating frame 42, thereby stopping the rotating end 421 by the stop blocks.

[0071] In another embodiment, the limiting member 80 includes a limiting pin 81 that extends along the arrangement direction of the plurality of rotating frames 42.

[0072] In this embodiment, since the limiting pin 81 is extended along the arrangement direction of the multiple rotating frames 42, the limiting pin 81 simultaneously blocks the rotating ends 421 of the multiple rotating frames 42. On the one hand, the small size of the limiting pin 81 avoids it from occupying the space inside the vehicle, making it easier to arrange other components; on the other hand, the limiting pin 81 only needs to be fixed once to limit the multiple rotating frames 42, improving the ease of assembly.

[0073] In one embodiment, the connecting frame 41 is provided with insertion holes along the arrangement direction of the plurality of rotating frames 42, and the insertion holes are located on the side of the rotating end 421 near the seat position; the limiting pin 81 is inserted into the insertion hole and welded to the connecting frame 41.

[0074] In this embodiment, when assembling the limiting pin 81, the limiting pin 81 is first inserted into the insertion hole of the connecting frame 41, and then the relative position of the limiting pin 81 and the connecting frame 41 is controlled by the welding fixture, and the perpendicularity of the limiting pin 81 and the connecting frame 41 is controlled. Then, double MIG welding is used to ensure the connection strength between the limiting pin 81 and the connecting frame 41.

[0075] In one embodiment, the rotating end 421 has a snap-fit ​​notch 421a on the side near the seat cushion; the limiting pin 81 is engaged in the snap-fit ​​notch 421a when the rotating frame 42 is in the reclined position.

[0076] In this embodiment, when the rotating frame 42 rotates to the reclining position, the limiting pin 81 enters the locking notch 421a, improving the stopping stability of the limiting pin 81 on the rotating frame 42. It should be understood that when the rotating frame 42 rotates towards the upright position, to avoid interference between the limiting pin 81 and the inner wall of the locking notch 421a, the size of the locking notch 421a is set to be larger than the outer diameter of the limiting pin 81. Specifically, in this embodiment, the end of the rotating frame 42 furthest from the rotating end 421 is a movable end 422. The movable end 422 can approach and move away from the connecting beam 1 when rotating with the rotating end 421, and the locking notch 421a is open on the side furthest from the corresponding movable end 422.

[0077] In addition, it should be noted that you should refer to [link / reference]. Figure 6 In this embodiment, two rotating brackets 42 are mounted on the connecting bracket 41 via a rotating shaft 46, improving assembly convenience. Furthermore, the axis of the rotating shaft 46 is parallel to the axis of the limiting pin 81.

[0078] In one embodiment, the rotating frame 42 extends a mounting plate 43 in a direction away from the other rotating frame 42. The mounting plate 43 is located at the movable end 422 and is provided with a fitting 44 for engaging with a mating part provided on the backrest and fixing the backrest to the mounting plate 43.

[0079] In this embodiment, the backrest is installed via the mounting plate 43, increasing the contact area between the backrest bracket and the backrest, thereby improving the connection stability between the backrest bracket and the backrest. It should be noted that the mounting plate 43 and the backrest can be connected via bolts, snaps, sewing, or other methods, and corresponding fittings 44 can be installed.

[0080] In one embodiment, the assembly 44 includes a mounting hole 44a formed in the assembly plate 43 for bolts to pass through, and for the assembly plate 43 to be bolted to the backrest.

[0081] In this embodiment, mounting holes 44a are provided on the assembly plate 43, so that the backrest can be fixed on the assembly plate 43 through the hole and bolt engagement. In addition, in this solution, each assembly plate 43 is also provided with a positioning block 45 extending towards the seat cushion. The positioning block 45 is located on the side of the assembly plate 43 away from the other rotating frame 42, so as to engage with the hole on the backrest to achieve auxiliary installation and limiting of the backrest.

[0082] In addition, it should be noted that during assembly, the two rotating brackets 42 are first riveted to the connecting bracket 41 via the rotating shaft 46, and then the limiting pin 81 is inserted into the insertion hole of the connecting bracket 41. The position of the limiting pin 81 is controlled by the welding fixture, and the perpendicularity between the limiting pin 81 and the connecting bracket 41 is controlled. Then, the two-stage welding is used to ensure the connection strength between the limiting pin 81 and the connecting bracket 41.

[0083] After welding, install the backrest mounting structure onto the inspection fixture. Rotate the rotating frame 42 around the rotating shaft 46 toward the seat cushion until the cut edge of the rotating frame 42 contacts the limit pin 81. At this point, the rotating frame 42 is in the folded position. Then, use the detection pin slidably set on the inspection fixture to check the mounting hole 44a on the rotating frame 42. If the detection pin passes through the mounting hole 44a, it is considered qualified; if it does not pass through the mounting hole 44a, it is considered unqualified. Rework the cut edge of the rotating frame 42 until the detection pin of the inspection fixture passes through the mounting hole 44a.

[0084] In addition, this application also provides a seat, which includes a seat cushion, multiple backrests, and the aforementioned backrest mounting structure; wherein the seat cushion is located in front of the connecting beam 1 of the backrest mounting structure, that is, the seat cushion is located in the seat cushion position; the multiple backrests are respectively mounted on multiple rotating frames 42 of the backrest mounting structure.

[0085] It should be noted that the specific structure of the backrest mounting structure of this seat refers to the above embodiments. Since this seat adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0086] It should be understood that, since the backrest is mounted on the rotating frame 42, when the rotating frame 42 rotates to the position where the movable end 422 is close to the seat cushion, the backrest lies down on the seat cushion, thus reclining the backrest. When the rotating frame 42 rotates to the position where the movable end 422 is away from the seat cushion, the backrest is also in a position away from the seat cushion, thus standing the backrest up.

[0087] This application also provides a vehicle, which may include a vehicle body and the aforementioned backrest mounting structure, wherein the side fixing end 21 and the support fixing end 31 of the backrest mounting structure are both fixed to the vehicle body. It should be noted that the specific structure of the backrest mounting structure of this vehicle refers to the above embodiments. Since this vehicle adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated further here.

[0088] In some embodiments, the vehicle may be a gasoline-powered vehicle, or it may be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle. The vehicle may also be any vehicle equipped with a battery.

[0089] Please see the appendix Figures 1 to 6 Based on the above embodiments, the backrest mounting structure and vehicle in this solution have the following beneficial effects:

[0090] The backrest mounting structure in this design includes a connecting beam 1, an anti-rollover bracket 70, a child seat hook 50, a mounting frame 40, a limiting pin 81, a sensor bracket 60, two side frames 20, and multiple support frames 30. Except for the rotating frame 42 of the mounting frame 40, which is fixed to the connecting frame 41 by riveting, all other components are connected by CO2 shielded welding. This highly centralized approach meets the installation requirements of each component. Simultaneously, the support frames 30 address the issue of insufficient backrest mounting strength caused by the significant drop between the front and rear of the vehicle's rear floor. The limiting pin 81 ensures consistency between the four-quarter and six-quarter backrests when flipped to the folded-down position, preventing interference during movement due to axial misalignment. It also effectively absorbs manufacturing and assembly errors of the rotating frame 42, ensuring a matching appearance after the backrest is folded down.

[0091] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A backrest mounting structure, characterized in that, include: Connecting beam (10); At least two side frames (20), the at least two side frames (20) are respectively connected to both ends of the connecting beam (10), each side frame (20) has a side fixing end (21) spaced apart from the connecting beam (10), the side fixing end (21) is used to fix to the vehicle body; Multiple support frames (30) are connected to the connecting beam (10) and located between two side frames (20). Each support frame (30) has a support fixing end (31) and a mounting end (32). The multiple support fixing ends (31) are spaced apart and used to fix to the vehicle body, and are located on the same side of the connecting beam (10) as the side fixing ends (21). The multiple mounting ends (32) are located on the side of the connecting beam (10) away from the support fixing ends (31). Install the frame (40), connect the plurality of said mounting ends (32), and use it to install the backrest.

2. The backrest mounting structure according to claim 1, characterized in that, Multiple support fixing ends (31) are spaced apart along the extension direction of the connecting beam (10).

3. The backrest mounting structure according to claim 1, characterized in that, At least one of the support frames (30) is provided with a weight reduction hole (30a), which is located between the support fixing end (31) and the mounting end (32).

4. The backrest mounting structure according to claim 1, characterized in that, The backrest mounting structure also includes at least one child seat hook (50) and at least one sensor bracket (60), both of which are mounted on the connecting beam (10) and spaced apart along the extension direction of the connecting beam (10).

5. The backrest mounting structure according to claim 4, characterized in that, The sensor bracket (60) has multiple protective flanges (61) at its end edge. The multiple protective flanges (61) are arranged at intervals along the circumference of the sensor bracket (60) and are located on the same side of the sensor bracket (60).

6. The backrest mounting structure according to claim 1, characterized in that, The mounting frame (40) includes a connecting frame (41) and a rotating frame (42). The connecting frame (41) connects multiple mounting ends (32). The rotating frame (42) is rotatably mounted on the connecting frame (41), and its rotation axis is parallel to the extension direction of the connecting beam (10), and is used to mount the backrest.

7. The backrest mounting structure according to claim 6, characterized in that, The backrest mounting structure also includes an anti-flip bracket (70), which is mounted on the connecting beam (10) to stop the backrest and restrict the backrest from flipping away from the connecting beam (10) along with the rotating frame (42).

8. The backrest mounting structure according to claim 6, characterized in that, The rotating frame (42) is provided in multiple ways. The arrangement direction of the multiple rotating frames (42) is parallel to the extension direction of the connecting beam (10), and each is independently equipped with a backrest. Each rotating frame (42) has a folded position close to the connecting beam (10) and an upright position away from the connecting beam (10) when rotating. The backrest mounting structure also includes a limiting member (80), which is disposed on the connecting frame (41) and is used to block the multiple rotating frames (42) when they are in the reclined position, so as to restrict the multiple rotating frames (42) from continuing to move toward the connecting beam (10) and to make the side of the multiple rotating frames (42) away from the connecting beam (10) flush.

9. The backrest mounting structure according to claim 8, characterized in that, The end of the rotating frame (42) that is rotatably connected to the connecting frame (41) is the rotating end (421). The limiting member (80) is located on the side of the rotating end (421) near the connecting beam (10) and blocks the rotating frame (42) when the rotating frame (42) is in the reclining position.

10. A vehicle, characterized in that, include: Vehicle body; and The backrest mounting structure as described in any one of claims 1 to 9, wherein the side fixing end (21) and the support fixing end (31) of the backrest mounting structure are both fixed to the vehicle body.

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