Seat integrated mounting bracket assembly and automobile

Abstract

The application discloses a seat integrated mounting bracket assembly and a car, the seat integrated mounting bracket assembly comprises a main pipe body, a first mounting bracket and a second mounting bracket; the first mounting bracket comprises a first main body and a backrest hinge, a first body connection part, a seat connection part, a first safety belt lock catch connection part and a main pipe connection part one are arranged on the first main body, the seat connection part is rotationally connected with the backrest hinge, and the main pipe connection part one is connected with the right part of the main pipe body; the second mounting bracket is provided with a body and a safety belt connection part, a second safety belt lock catch connection part and a main pipe connection part two, and the main pipe connection part two is connected with the left part of the main pipe body. The seat integrated mounting bracket assembly has the advantages of multiple functions, a large number of mounting points, high stability and reliability of each mounting point, adaptability to different car models, and high universality.

Description

Technical Field

[0001] The invention relates to automobile parts, in particular to a seat integrated mounting bracket assembly and an automobile. Background Art

[0002] With the advancement of unibody die-casting technology, more and more new car models are adopting unibody die-cast bodies. However, unibody die-cast bodies have two disadvantages compared to traditional bodies constructed from multiple welded sheet metal parts: 1. They are more difficult to mold. While traditional bodies can adjust a few parts to suit different models, unibody die-cast body parts must be shared across different models, placing higher demands on the matching of surrounding parts and ergonomics. 2. High-strength mounting points on unibody die-cast bodies are more expensive, requiring specialized tooling for their processing and limiting the number of mounting points. Conventional body mounting points, on the other hand, are less expensive and have virtually no restrictions on their number. For example, the rear floor beneath the rear seatbacks of conventional bodies requires mounting of components such as the seatbacks, cushions, ISOFIX lower anchor points (ISOFIX refers to child seat anchors), and seatbelt buckles. There are over ten mounting points associated with the rear seats in conventional bodies, and their locations may require slight adjustments for different models. If these mounting points were still incorporated directly into the unibody die-cast body, the unibody die-cast body would struggle to meet these requirements.

[0003] CN205044581U discloses a seat center mounting hinge, including a mounting hinge base and a mounting hinge connecting plate; the middle of the mounting hinge base is a cavity structure; the number of the mounting hinge connecting plates is 2, and they are symmetrical and connected to the mounting hinge base through mounting hinge rivets. This technical solution is used for the installation of car seats, and can easily rotate the car seat 180°, and is not easy to wear and slip, making it very convenient to fold the car seat and adjust the backrest. There is no doubt that the technical solution disclosed in the above patent document is a beneficial attempt in the relevant technical field, but the two holes on the inclined surface of the mounting hinge base are at an angle to each other, which cannot be applied to the one-piece die-cast car body, and its function is only to install the seat, which has relatively few functions. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a seat-integrated mounting bracket assembly and a car, which has many functions and mounting points, each mounting point has high stability and reliability, and can be adaptively adjusted according to the mounting point requirements of different models, and has strong versatility.

[0005] A seat-integrated mounting bracket assembly in the present invention includes a main body, a first mounting bracket and a second mounting bracket; the first mounting bracket includes a first main body and a backrest hinge, the first main body is provided with a first vehicle body connection part, a seat connection part, a first safety belt buckle connection part and a main body connection part 1, the seat connection part is rotatably connected to the backrest hinge, and the main body connection part 1 is connected to the right part of the main body; the second mounting bracket is provided with a vehicle body and safety belt connection part, a second safety belt buckle connection part and a main body connection part 2, and the main body connection part 2 is connected to the left part of the main body.

[0006] Furthermore, the first main body includes a first base plate, a first flange provided on the right side of the first base plate, and a second flange provided on the left side of the first base plate. The main pipe connecting portion 1 includes a first notch provided in the middle of the first flange and a second notch provided in the middle of the second flange. The first notch and the second notch match the shape of the outer surface of the main pipe body.

[0007] Furthermore, the first seat belt buckle connection part includes a first seat belt buckle connection hole arranged at the front of the first flange and a second seat belt buckle connection hole arranged at the front of the second flange; the first flange is provided with a first reinforced limiting flange extending to the right, and the second flange is provided with a second reinforced limiting flange extending to the left; the first reinforced limiting flange is located between the first notch and the first seat belt buckle connection hole, and the second reinforced limiting flange is located between the second notch and the second seat belt buckle connection hole.

[0008] Furthermore, the rear portion of the first flange extends upward, and the seat connection portion is arranged at the upper portion of the first flange; the first body connection portion is arranged at the rear portion of the first main body, and a weight-reducing hole is provided at the front portion of the first main body, and the weight-reducing hole is a rectangular through hole with a length along the front-to-back direction.

[0009] Furthermore, the first mounting bracket also includes a reinforcing plate, which includes a supporting portion and a mounting portion that are perpendicular to each other; the supporting portion is connected to the first base plate, the first flange and the second flange, the mounting portion extends backward and is parallel to the first base plate, and the left side of the mounting portion is connected to the second flange; a third body connecting portion is provided on the mounting portion, and the third body connecting portion and the first body connecting portion are through holes whose axes are parallel to each other.

[0010] Furthermore, the second mounting bracket includes a second base plate and a third flange, and the third flange is arranged on the right side or left side of the second base plate; the body and seat belt connection part is arranged at the rear part of the second base plate, and the left and right sides of the body and seat belt connection part are respectively provided with anti-rotation limit parts.

[0011] Furthermore, the second main pipe connection part is a third notch arranged in the middle of the third flange, and the third notch matches the shape of the outer surface of the main pipe body; the second seat belt buckle connection part is a third seat belt buckle connection hole arranged in the front of the third flange; the third flange is provided with a third reinforced limiting flange, and the third reinforced limiting flange is arranged between the third notch and the third seat belt buckle connection hole.

[0012] Furthermore, it also includes a right auxiliary tube body, a left auxiliary tube body, a right vehicle body connecting support and a left vehicle body connecting support. The diameters of the right auxiliary tube body and the left auxiliary tube body are smaller than the diameter of the main tube body. The left and right sides of the main tube body are connected to the left side of the right auxiliary tube body and the right side of the left auxiliary tube body. The right side of the right auxiliary tube body is connected to the right vehicle body connecting support, and the left side of the left auxiliary tube body is connected to the left vehicle body connecting support. At least one child seat fixing wire is provided on the right auxiliary tube body and the left auxiliary tube body respectively.

[0013] Furthermore, a seat cushion fixing bracket is provided in the middle of the main pipe body, or a seat cushion fixing bracket is provided in the middle of the right auxiliary pipe body and the left auxiliary pipe body respectively.

[0014] An automobile in the present invention includes the above-mentioned seat-integrated mounting bracket assembly.

[0015] The beneficial effects of the present invention are:

[0016] (1) The main body, the first mounting bracket and the second mounting bracket of the present invention are connected to form an assembly by welding, which has a compact structure and integrates multiple connecting parts. The backrest hinge can rotate relative to the first main body to provide the rear seat back with a forward rotation and folding function. The seat connecting part can be connected to the one-piece die-cast body. The body and seat belt connecting part can be connected to the one-piece die-cast body and the rear seat belt at the same time. The first seat belt buckle connecting part and the second seat belt buckle connecting part can be installed with multiple rear seat belt buckles. Therefore, the seat integrated mounting bracket assembly has many functions and a large number of mounting points.

[0017] (2) The first mounting bracket and the second mounting bracket of the present invention are connected through a main pipe, forming a Y-direction force transmission path, which is conducive to transmitting the force divergence of the mounting point on the first mounting bracket to the second mounting bracket, and is also conducive to transmitting the force divergence of the mounting point on the second mounting bracket to the first mounting bracket, thereby improving the stability and reliability of each mounting point.

[0018] (3) The present invention can be adaptively adjusted according to the installation point requirements of different vehicle models, has strong versatility, and can meet the human-machine layout requirements of different vehicle models without changing the one-piece die-cast body structure, which is conducive to the universalization of the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0020] Figure 1 This is a schematic structural diagram of embodiment 1 of the present invention;

[0021] Figure 2 This is an exploded view of the first embodiment of the present invention;

[0022] Figure 3 An exploded view of the first mounting bracket according to the first embodiment of the present invention;

[0023] Figure 4 This is a structural diagram of the connection between the first main body and the reinforcing plate in the first embodiment of the present invention;

[0024] Figure 5 This is a structural diagram of the connection between the first mounting bracket and the rear seat belt buckle according to the first embodiment of the present invention;

[0025] Figure 6 This is a structural schematic diagram of a second mounting bracket according to the first embodiment of the present invention;

[0026] Figure 7 This is a structural diagram of the second mounting bracket, rear seat belt buckle, and rear seat belt connection according to the first embodiment of the present invention;

[0027] Figure 8 This is a structural diagram of embodiment 2 of the present invention;

[0028] Figure 9 This is a structural diagram of embodiment 3 of the present invention;

[0029] Figure 10 This is an exploded view of the left auxiliary pipe body, the left vehicle body connecting support, the child seat fixing wire, and the seat cushion fixing bracket of the third embodiment of the present invention;

[0030] Figure 11 This is a structural schematic diagram of the left auxiliary tube body, left vehicle body connecting support, child seat fixing wire, seat cushion fixing bracket and rear seat cushion steel wire connection of embodiment 3 of the present invention.

[0031] The following are marked in the accompanying drawings:

[0032] 1- Main body;

[0033] 2-first mounting bracket, 21-backrest hinge, 22-first main body, 221-first body connection portion, 222-seat connection portion, 223-first seat belt buckle connection portion, 224-main pipe connection portion 1, 225-first bottom plate, 226-first flange, 227-second flange, 228-weight reduction hole, 229-first reinforcement limit flange, 2210-second reinforcement limit flange, 23-reinforcement plate, 231-support portion, 232-mounting portion, 233-third body connection portion;

[0034] 3 - second mounting bracket, 31 - vehicle body and seat belt connection, 32 - second seat belt buckle connection, 33 - second main connecting part, 34 - second bottom plate, 35 - third flange, 36 - third reinforced limit flange, 37 - anti-rotation limit part;

[0035] 4-right auxiliary tube body, 5-left auxiliary tube body, 6-right body connection support, 7-left body connection support, 8-child seat fixing wire, 9-seat cushion fixing bracket, 91-seat cushion wire fixing hole;

[0036] 10-Rear seat belts, 11-Rear seat belt buckles, 12-Rear seat cushion wires. DETAILED DESCRIPTION

[0037] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0038] Example 1:

[0039] like Figure 1-Figure 7 As shown, a seat-integrated mounting bracket assembly in this embodiment includes a main body 1, a first mounting bracket 2 and a second mounting bracket 3; the first mounting bracket 2 includes a first main body 22 and a backrest hinge 21, and the first main body 22 is provided with a first body connection part 221, a seat connection part 222, a first safety belt buckle connection part 223 and a main body connection part 1 224, the seat connection part 222 is rotatably connected to the backrest hinge 21, and the main body connection part 1 224 is connected to the right part of the main body 1; the second mounting bracket 3 is provided with a body and safety belt connection part 31, a second safety belt buckle connection part 32 and a main body connection part 2 33, and the main body connection part 2 33 is connected to the left part of the main body 1.

[0040] The main body 1, the first mounting bracket 2 and the second mounting bracket 3 are connected into an assembly by welding, which has a compact structure and integrates multiple connecting parts. The backrest hinge 21 can rotate relative to the first main body 22 to provide a forward rotation and folding function for the rear seat back. The seat connection part 222 can be connected to the one-piece die-cast body. The body and seat belt connection part 31 can be connected to the one-piece die-cast body and the rear seat seat belt 10 at the same time. The first seat belt buckle connection part 223 and the second seat belt buckle connection part 32 can install multiple rear seat belt buckles 11. Therefore, the seat integrated mounting bracket assembly has many functions and the number of installation points.

[0041] At the same time, the first mounting bracket 2 and the second mounting bracket 3 are connected through the main pipe 1 to form a Y-direction force transmission path (the Y direction is the left and right direction of the vehicle body), which is conducive to transmitting the force divergence of the mounting point on the first mounting bracket 2 to the second mounting bracket 3, and is also conducive to transmitting the force divergence of the mounting point on the second mounting bracket 3 to the first mounting bracket 2, thereby improving the stability and reliability of each mounting point.

[0042] In addition, it can be adaptively adjusted according to the installation point requirements of different models, and has strong versatility. It can meet the human-machine layout requirements of different models without changing the one-piece die-cast body structure, which is conducive to the universalization of the body.

[0043] In this embodiment, the first main body 22 includes a first base plate 225, a first flange 226 arranged on the right side of the first base plate 225, and a second flange 227 arranged on the left side of the first base plate 225. The main pipe connecting portion 224 includes a first notch arranged in the middle of the first flange 226 and a second notch arranged in the middle of the second flange 227. The first notch and the second notch match the shape of the outer surface of the main pipe body 1.

[0044] The main body 1 is a circular tube, and the first and second notches are both arc-shaped. The main body 1 is placed on the first and second notches and then fixed by welding. The first base plate 225, the first flange 226, and the second flange 227 form a U-shaped cross-section structure with high strength and resistance to deformation.

[0045] In this embodiment, the first seat belt buckle connection part 223 includes a first seat belt buckle connection hole arranged at the front of the first flange 226 and a second seat belt buckle connection hole arranged at the front of the second flange 227; the first flange 226 is provided with a first reinforcing limit flange 229 extending to the right, and the second flange 227 is provided with a second reinforcing limit flange 2210 extending to the left; the first reinforcing limit flange 229 is located between the first notch and the first seat belt buckle connection hole, and the second reinforcing limit flange 2210 is located between the second notch and the second seat belt buckle connection hole.

[0046] The first seat belt buckle connecting hole and the second seat belt buckle connecting hole can be used to install a rear seat belt buckle 11 respectively. The first reinforced limiting flange 229 can enhance the strength of the first flange 226, and the second reinforced limiting flange 2210 can enhance the strength of the second flange 227, thereby enhancing the overall strength of the first main body 22. In addition, the first reinforced limiting flange 229 and the second reinforced limiting flange 2210 can also respectively limit the rotation angle of the rear seat belt buckle 11.

[0047] In this embodiment, the rear portion of the first flange 226 extends upward, and the seat connection portion 222 is disposed above the first flange 226. The first body connection portion 221 is disposed at the rear portion of the first body 22. The front portion of the first body 22 is provided with a weight-reducing hole 228, which is a rectangular through-hole extending in the front-to-back direction. The weight-reducing hole 228 reduces the weight of the first mounting bracket 2, contributing to the lightweighting of the entire vehicle.

[0048] In this embodiment, the first mounting bracket 2 also includes a reinforcing plate 23, and the reinforcing plate 23 includes a supporting portion 231 and a mounting portion 232 that are perpendicular to each other; the supporting portion 231 is connected to the first base plate 225, the first flange 226 and the second flange 227, and the mounting portion 232 extends backward and is parallel to the first base plate 225, and the left side of the mounting portion 232 is connected to the second flange 227; a third body connecting portion 233 is provided on the mounting portion 232, and the third body connecting portion 233 and the first body connecting portion 221 are through holes with two axes parallel to each other.

[0049] The strength of the first mounting bracket 2 is further enhanced by the reinforcing plate 23, and the third body connection portion 233 and the first body connection portion 221 are two through holes with parallel axes, which can match the one-piece die-cast body, avoiding the inability to reserve corresponding matching structures in the one-piece die-cast body (such as nuts in the die-cast body, etc.) due to the different angles of the axes of the through holes.

[0050] In this embodiment, the second mounting bracket 3 includes a second base plate 34 and a third flange 35, and the third flange 35 is arranged on the right side or left side of the second base plate 34; the vehicle body and seat belt connection part 31 is arranged at the rear part of the second base plate 34, and the left and right sides of the vehicle body and seat belt connection part 31 are respectively provided with anti-rotation limit parts 37.

[0051] The third flange 35 can increase the strength of the second mounting bracket 3. The body and seat belt connection part 31 is the third seat belt buckle connection hole. The mounting hole of the rear seat belt 10, the third seat belt buckle connection hole and the one-piece die-cast body are connected by a bolt. The three share one bolt, which makes the structure compact and reduces the number of mounting points. The anti-rotation limit part 37 can limit the rotation of the mounting structure of the rear seat belt 10.

[0052] In this embodiment, the second main pipe connection portion 33 is a third notch provided in the middle of the third flange 35, and the third notch matches the shape of the outer surface of the main pipe body 1; the second seat belt buckle connection portion 32 is a third seat belt buckle connection hole provided in the front of the third flange 35; a third reinforced limiting flange 36 is provided on the third flange 35, and the third reinforced limiting flange 36 is provided between the third notch and the third seat belt buckle connection hole.

[0053] The main body 1 is a circular tube, and the third notches are each arc-shaped. The main body 1 is placed over the third notches and then secured by welding. A rear seat belt buckle 11 can be mounted in the third seat belt buckle connection hole. The third reinforcing flange 36 enhances the strength of the third flange 35, thereby increasing the overall strength of the second mounting bracket 3. The third reinforcing flange 36 also limits the rotation angle of the rear seat belt buckle 11.

[0054] Example 2:

[0055] like Figure 8 As shown, a seat integrated mounting bracket assembly in this embodiment adds a seat cushion fixing bracket 9 on the basis of the first embodiment, and the seat cushion fixing bracket 9 is located in the middle of the main body 1.

[0056] A seat cushion wire fixing hole 91 is provided on the seat cushion fixing bracket 9. The seat cushion fixing bracket 9 is U-shaped. After the upper arc-shaped notch of the seat cushion fixing bracket 9 is welded to the main body 1, a channel is formed between the bottom plate of the seat cushion fixing bracket 9 and the main body 1. The rear seat cushion steel wire can pass through the channel and be fixed to the seat cushion steel wire fixing hole 91 on the bottom plate of the seat cushion fixing bracket 9 by bolts.

[0057] Example 3:

[0058] like Figures 9-11 As shown, a seat integrated mounting bracket assembly in this embodiment is added with a right auxiliary tube body 4, a left auxiliary tube body 5, a right vehicle body connecting support 6 and a left vehicle body connecting support 7 on the basis of the first embodiment. The diameters of the right auxiliary tube body 4 and the left auxiliary tube body 5 are both smaller than the diameter of the main tube body 1. The left and right sides of the main tube body 1 are connected to the left side of the right auxiliary tube body 4 and the right side of the left auxiliary tube body 5. The right side of the right auxiliary tube body 4 is connected to the right vehicle body connecting support 6, and the left side of the left auxiliary tube body 5 is connected to the left vehicle body connecting support 7. At least one child seat fixing wire 8 is provided on the right auxiliary tube body 4 and the left auxiliary tube body 5 respectively.

[0059] The right body connecting bracket 6 and the left body connecting bracket 7 can be connected to the one-piece die-cast body, increasing the installation points with the one-piece die-cast body. At the same time, the left and right sides of the main body 1 are connected to the right auxiliary pipe body 4 and the left auxiliary pipe body 5 through a tube shrinkage process and a welding process. The right auxiliary pipe body 4, the main body 1 and the left auxiliary pipe body 5 are connected into a whole, forming a Y-direction force transmission path, which is conducive to transmitting the force of the installation point on the first mounting bracket 2 and the force of the installation point on the second mounting bracket 3 to other positions, thereby improving the stability and reliability of each installation point.

[0060] The right and left auxiliary tubes 4 and 5 have fewer mounting points and require less strength than the main tube 1, resulting in smaller diameters. The three-section structure allows for flexible application in different vehicle environments, expanding its range of applications. The diameters of different sections are adjusted based on the number of mounting points, minimizing performance losses.

[0061] One of the child seat fixing wires 8 is welded to the right auxiliary tube 4. Another is welded to both the right auxiliary tube 4 and the right vehicle body connecting bracket 6. Another is welded to the left auxiliary tube 5. Another is welded to both the left auxiliary tube 5 and the left vehicle body connecting bracket 7. Both the right vehicle body connecting bracket 6 and the left vehicle body connecting bracket 7 are provided with flanged structures for increased strength.

[0062] In this embodiment, a seat cushion fixing bracket 9 is provided in the middle of each of the right auxiliary tube body 4 and the left auxiliary tube body 5. The connection between the seat cushion fixing bracket 9 and the right auxiliary tube body 4 is used as an example. A seat cushion wire fixing hole 91 is provided on the seat cushion fixing bracket 9. The seat cushion fixing bracket 9 is U-shaped. After the arc-shaped notch in the upper portion of the seat cushion fixing bracket 9 is welded to the right auxiliary tube body 4, a passage is formed between the bottom plate of the seat cushion fixing bracket 9 and the right auxiliary tube body 4. The rear seat cushion wire 12 can pass through this passage and be fixed to the seat cushion wire fixing hole 91 on the bottom plate of the seat cushion fixing bracket 9 via bolts.

[0063] Example 4:

[0064] A car in this embodiment includes an integral die-cast body and the seat-integrated mounting bracket assembly of embodiment one, two, three or four, wherein the seat-integrated mounting bracket assembly is mounted on the integral die-cast body.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A seat integrated mounting bracket assembly, characterized by: The invention comprises a main body (1), a first mounting bracket (2) and a second mounting bracket (3); the first mounting bracket (2) comprises a first main body (22) and a backrest hinge (21); the first main body (22) is provided with a first vehicle body connection part (221), a seat connection part (222), a first safety belt buckle connection part (223) and a main body connection part 1 (224); the seat connection part (222) is rotatably connected to the backrest hinge (21); the main body connection part 1 (224) is connected to the right part of the main body (1); the second mounting bracket (3) is provided with a vehicle body and safety belt connection part (31), a second safety belt buckle connection part (32) and a main body connection part 2 (33); the main body connection part 2 (33) is connected to the left part of the main body (1); The first main body (22) comprises a first base plate (225), a first flange (226) arranged on the right side of the first base plate (225), and a second flange (227) arranged on the left side of the first base plate (225); the main pipe connecting portion (224) comprises a first notch arranged in the middle of the first flange (226) and a second notch arranged in the middle of the second flange (227); the first notch and the second notch match the shape of the outer surface of the main pipe body (1); The first safety belt buckle connection portion (223) includes a first safety belt buckle connection hole provided at the front of the first flange (226) and a second safety belt buckle connection hole provided at the front of the second flange (227); the first flange (226) is provided with a first reinforcing limit flange (229) extending to the right, and the second flange (227) is provided with a second reinforcing limit flange (2210) extending to the left; the first reinforcing limit flange (229) is located between the first notch and the first safety belt buckle connection hole, and the second reinforcing limit flange (2210) is located between the second notch and the second safety belt buckle connection hole.

2. The seat-integrated mounting bracket assembly according to claim 1, characterized in that: The rear portion of the first flange (226) extends upward, and the seat connection portion (222) is arranged on the upper portion of the first flange (226); the first body connection portion (221) is arranged on the rear portion of the first main body (22), and a weight-reducing hole (228) is provided on the front portion of the first main body (22), and the weight-reducing hole (228) is a rectangular through hole with a length along the front-to-back direction.

3. The seat-integrated mounting bracket assembly according to claim 1, characterized in that: The first mounting bracket (2) further includes a reinforcing plate (23), the reinforcing plate (23) including a supporting portion (231) and a mounting portion (232) perpendicular to each other; the supporting portion (231) is connected to the first base plate (225), the first flange (226) and the second flange (227); the mounting portion (232) extends rearward and is parallel to the first base plate (225), and the left side of the mounting portion (232) is connected to the second flange (227); a third body connecting portion (233) is provided on the mounting portion (232), and the third body connecting portion (233) and the first body connecting portion (221) are through holes whose axes are parallel to each other.

4. The seat-integrated mounting bracket assembly according to claim 1, characterized in that: The second mounting bracket (3) includes a second base plate (34) and a third flange (35), wherein the third flange (35) is arranged on the right side or the left side of the second base plate (34); the vehicle body and safety belt connecting portion (31) is arranged at the rear of the second base plate (34), and anti-rotation limiting portions (37) are respectively arranged on the left and right sides of the vehicle body and safety belt connecting portion (31).

5. The seat-integrated mounting bracket assembly according to claim 4, characterized in that: The second main pipe connection part (33) is a third notch provided in the middle of the third flange (35), and the third notch matches the shape of the outer surface of the main pipe body (1); the second safety belt buckle connection part (32) is a third safety belt buckle connection hole provided in the front of the third flange (35); a third reinforcing limit flange (36) is provided on the third flange (35), and the third reinforcing limit flange (36) is provided between the third notch and the third safety belt buckle connection hole.

6. The seat-integrated mounting bracket assembly according to claim 1, characterized in that: The invention also includes a right auxiliary tube body (4), a left auxiliary tube body (5), a right vehicle body connecting support (6) and a left vehicle body connecting support (7). The diameters of the right auxiliary tube body (4) and the left auxiliary tube body (5) are both smaller than the diameter of the main tube body (1). The left and right sides of the main tube body (1) are connected to the left side of the right auxiliary tube body (4) and the right side of the left auxiliary tube body (5). The right side of the right auxiliary tube body (4) is connected to the right vehicle body connecting support (6), and the left side of the left auxiliary tube body (5) is connected to the left vehicle body connecting support (7). At least one child seat fixing wire (8) is respectively provided on the right auxiliary tube body (4) and the left auxiliary tube body (5).

7. The seat-integrated mounting bracket assembly according to claim 6, characterized in that: A seat cushion fixing bracket (9) is provided in the middle of the main pipe body (1), or a seat cushion fixing bracket (9) is provided in the middle of each of the right auxiliary pipe body (4) and the left auxiliary pipe body (5).

8. An automobile, characterized in that: It comprises a seat-integrated mounting bracket assembly as described in any one of claims 1-7.

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