C-pillar tube beam structure and mounting method

Abstract

This invention discloses a C-pillar tube beam structure and its installation method for mounting on the C-pillar of a vehicle frame. The C-pillar tube beam structure includes an inner plate assembly, a reinforcing plate assembly, and a tube beam assembly. One end of the inner plate assembly has a mounting portion connected to the C-pillar of the vehicle frame. The reinforcing plate assembly covers the mounting portion, and a receiving cavity is provided between the reinforcing plate assembly and the mounting portion. The tube beam assembly is disposed within the receiving cavity and connects both the reinforcing plate assembly and the mounting portion. This invention improves the strength and rigidity of the C-pillar by adding a tube beam assembly between the inner plate assembly and the reinforcing plate assembly, thereby increasing the pressure resistance of the vehicle roof, reducing deformation of the vehicle body structure during rollover, and protecting passenger safety.

Description

Technical Field

[0001] This invention relates to the field of automotive parts, and in particular to a C-pillar tube beam structure and its installation method. Background Technology

[0002] With social development and the improvement of people's living standards, cars have become a necessity of life. However, cars may roll over when driving in certain special environments or when involved in traffic accidents.

[0003] In existing technologies, the C-pillar of a car body structure has low strength and rigidity, resulting in poor compressive strength of the car roof. This makes the car body structure prone to deformation during rollover, thus threatening the personal safety of passengers. Summary of the Invention

[0004] The purpose of this invention is to provide a C-pillar tube beam structure and installation method, which aims to solve the problem of low strength and stiffness of existing automotive C-pillars.

[0005] To address the aforementioned technical problems, this invention provides a C-pillar tube beam structure for mounting on the C-pillar of an automobile frame. The structure includes an inner plate assembly, a reinforcing plate assembly, and a tube beam assembly. One end of the inner plate assembly has a mounting portion connected to the C-pillar of the automobile frame. The reinforcing plate assembly covers the mounting portion, and a receiving cavity is provided between the reinforcing plate assembly and the mounting portion. The tube beam assembly is disposed within the receiving cavity and connects to both the reinforcing plate assembly and the mounting portion.

[0006] Furthermore, the tube beam assembly includes a tube beam body and a connecting assembly connected to the tube beam body, wherein the connecting assembly connects the reinforcing plate assembly and the mounting portion respectively.

[0007] Furthermore, the tube beam body is hollow inside, and the connecting assembly is sleeved on the tube beam body.

[0008] Furthermore, the tube beam body includes an upper tube beam and a lower tube beam. The upper tube beam is laterally abutted against one end of the mounting part, and one end of the lower tube beam is connected to the upper tube beam, while the other end extends longitudinally to the other end of the mounting part.

[0009] Furthermore, the connecting assembly includes a first connector disposed between the upper tube beam and the lower tube beam, a second connector disposed on the lower tube beam, and a third connector disposed on the lower tube beam at one end away from the upper tube beam. The first connector is connected to the mounting part, and the second connector and the third connector are respectively connected to the reinforcing plate assembly.

[0010] Furthermore, the mounting portion is provided with a first connecting portion for connecting the first connecting member.

[0011] Furthermore, the reinforcing plate assembly includes an upper reinforcing plate and a lower reinforcing plate connected in sequence; the upper reinforcing plate is provided with a second connecting portion for connecting the second connecting member, and the lower reinforcing plate is provided with a third connecting portion for connecting the third connecting member.

[0012] Furthermore, the upper tube beam and the upper reinforcing plate are connected by welding.

[0013] The present invention also provides an installation method for a C-pillar tubular beam structure, used to install the C-pillar tubular beam structure on the C-pillar of an automobile frame, comprising:

[0014] The inner panel assembly is installed on the C-pillar of the vehicle frame;

[0015] Connect the tube beam assembly to the inner plate assembly;

[0016] The reinforcing plate assembly is placed over the inner plate assembly, and the reinforcing plate assembly and the tube beam assembly are connected.

[0017] Furthermore, the installation method of the C-column tube beam structure also includes:

[0018] The upper pipe beam is welded to the upper reinforcing plate;

[0019] The first connector is connected to the first connecting part by the first bolt;

[0020] The second connector is connected to the second connecting part by the second bolt, and the third connector is connected to the third connecting part by the third bolt.

[0021] This invention discloses a C-pillar tube beam structure and its installation method for mounting on the C-pillar of a vehicle frame. The C-pillar tube beam structure includes an inner plate assembly, a reinforcing plate assembly, and a tube beam assembly. One end of the inner plate assembly has a mounting portion connected to the C-pillar of the vehicle frame. The reinforcing plate assembly covers the mounting portion, and a receiving cavity is provided between the reinforcing plate assembly and the mounting portion. The tube beam assembly is disposed within the receiving cavity and connects both the reinforcing plate assembly and the mounting portion. This invention improves the strength and rigidity of the C-pillar by adding a tube beam assembly between the inner plate assembly and the reinforcing plate assembly, thereby increasing the pressure resistance of the vehicle roof, reducing deformation of the vehicle body structure during rollover, and protecting passenger safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an exploded view of a C-column tube beam structure provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the C-column tube beam structure provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the reinforcing plate assembly provided in an embodiment of the present invention;

[0026] Figure 4 Cross-sectional view A provided for an embodiment of the present invention;

[0027] Figure 5 Cross-sectional view B provided for an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the inner plate assembly provided in an embodiment of the present invention;

[0029] Figure 7 Cross-sectional view C provided for an embodiment of the present invention;

[0030] Figure 8 Cross-sectional view D provided for an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the tube beam assembly provided in an embodiment of the present invention;

[0032] Figure 10 Cross-sectional view E provided for an embodiment of the present invention;

[0033] Figure 11 Cross-sectional view F provided for an embodiment of the present invention;

[0034] Figure 12 Cross-sectional view G provided for an embodiment of the present invention;

[0035] Figure 13 This is a schematic diagram of a C-column tube beam structure provided in another embodiment of the present invention;

[0036] Figure 14 Cross-sectional view H provided for an embodiment of the present invention;

[0037] Figure 15 Cross-sectional view I provided for an embodiment of the present invention;

[0038] Figure 16 Cross-sectional view J provided for an embodiment of the present invention;

[0039] Figure 17 Cross-sectional view K provided for an embodiment of the present invention;

[0040] Figure 18 A schematic diagram illustrating the installation method of the C-column tube beam structure provided in an embodiment of the present invention;

[0041] Figure 19 This is a schematic diagram of a sub-process for the installation method of the C-column tube beam structure provided in an embodiment of the present invention;

[0042] Figure 20 This is a schematic diagram illustrating the production process of the tube beam assembly provided in an embodiment of the present invention.

[0043] Explanation of the markings in the image:

[0044] 1. Inner panel assembly; 11. Mounting part; 111. First connecting part; 1111. First bolt; 12. Front part of rear wheel arch outer panel; 13. Rear seat belt guide ring mounting plate; 14. Upper mounting plate of rear seat belt; 15. Window connecting part;

[0045] 2. Reinforcing plate assembly; 21. Upper reinforcing plate; 211. Second connecting part; 2111. Second bolt; 22. Lower reinforcing plate; 221. Third connecting part; 2211. Third bolt; 23. Door lock buckle reinforcing plate; 24. Nut box;

[0046] 3. Pipe beam assembly; 31. Pipe beam body; 311. Upper pipe beam; 312. Lower pipe beam; 32. Connecting assembly; 321. First connector; 322. Second connector; 323. Third connector; 34. Welded section; 35. Reinforcing rib; 36. Rib plate;

[0047] 4. Receiving cavity;

[0048] 5. Seat belt mounting holes. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0051] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0052] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0053] Combination Figure 1-2 As shown, the present invention provides a C-pillar tube beam structure for installation on the C-pillar of an automobile frame, comprising: an inner plate assembly 1, a reinforcing plate assembly 2, and a tube beam assembly 3. One end of the inner plate assembly 1 is provided with a mounting part 11, which is connected to the C-pillar of the automobile frame. The reinforcing plate assembly 2 covers the mounting part 11, and a receiving cavity 4 is provided between the reinforcing plate assembly 2 and the mounting part 11. The tube beam assembly 3 is disposed in the receiving cavity 4, and the tube beam assembly 3 is connected to the reinforcing plate assembly 2 and the mounting part 11 respectively.

[0054] In this embodiment of the invention, a tube beam assembly 3 is added to the cavity 4 formed between the inner plate assembly 1 and the reinforcing plate assembly 2, and the tube beam assembly 3 connects the reinforcing plate assembly 2 and the inner plate assembly 1 respectively. Compared with the existing car body structure, the strength and rigidity of the C-pillar of the car are improved, thereby improving the pressure resistance of the car roof, reducing the deformation of the car body structure when the car rolls over, and protecting the safety of passengers.

[0055] In a specific embodiment, the inner panel assembly 1 further includes a window connecting part 15, which is connected to the side of the mounting part 11 away from the C-pillar of the vehicle frame and is used to install the rear window of the vehicle.

[0056] In a specific embodiment, the tube beam assembly 3 is made of high-strength steel. High-strength steel can significantly improve the strength and rigidity of the C-pillar of the vehicle, thereby increasing the pressure resistance of the vehicle roof. More specifically, the tube beam assembly 3 can be connected to the reinforcing plate assembly 2 and the inner plate assembly 1 by welding. The welded connection can make the vehicle body structure more stable, thereby further improving the strength and rigidity of the C-pillar of the vehicle.

[0057] Combination Figure 9-12As shown, in some embodiments, the tube beam assembly 3 includes a tube beam body 31 and a connecting assembly 32 connected to the tube beam body 31. The connecting assembly 32 connects the reinforcing plate assembly 2 and the mounting part 11 respectively.

[0058] In this embodiment, the reinforcing plate assembly 2 and the mounting part 11 are connected by the connecting component 32 respectively. Compared with connecting the reinforcing plate assembly 2 and the mounting part 11 by welding, not only can the welding process be reduced, but the integration of the vehicle body structure is also increased. Moreover, the mounting part 11 is connected to the C-pillar of the car, thereby improving the strength and rigidity of the C-pillar of the car, and thus improving the stability of the vehicle body structure.

[0059] In a specific embodiment, the tube beam body 31 is hollow inside, and the connecting component 32 is sleeved on the tube beam body 31.

[0060] In this embodiment, the hollow structure helps to reduce the weight of the tube beam assembly 3 and provides a certain deformation space for the car when it rolls over, thereby avoiding deformation of the car body structure. The connecting assembly 32 is sleeved on the tube beam body 31, and the sleeved connection method avoids the connecting assembly 32 affecting the compressive strength of the hollow tube beam body 31.

[0061] In another specific embodiment, the tube beam body 31 includes an upper tube beam 311 and a lower tube beam 312. The upper tube beam 311 is laterally abutted against one end of the mounting part 11, and one end of the lower tube beam 312 is connected to the upper tube beam 311, while the other end extends longitudinally to the other end of the mounting part 11.

[0062] In this embodiment, the tube beam body 31 is divided into a horizontal upper tube beam 311 and a vertical lower tube beam 312. The upper tube beam 311 and the lower tube beam 312 correspond to the shapes of the mounting part 11 and the reinforcing plate assembly 2, reinforcing the vehicle body structure in both horizontal and vertical directions, thereby increasing the stability of the vehicle body structure. In a more specific embodiment, the upper tube beam 311 is hollow inside and gradually narrows from the side near the mounting part 11 to the side away from the mounting part 11, which helps the reinforcing plate assembly 2 to cover the mounting part 11 to accommodate the upper tube beam 311. The lower tube beam 312 is hollow inside and rectangular, which facilitates casting.

[0063] In a specific embodiment, the connecting component 32 includes a first connector 321 disposed between the upper tube beam 311 and the lower tube beam 312, a second connector 322 disposed on the lower tube beam 312, and a third connector 323 disposed on the lower tube beam 312 and at one end away from the upper tube beam 311. The first connector 321 is connected to the inner plate assembly 1, and the second connector 322 and the third connector 323 are respectively connected to the reinforcing plate assembly 2.

[0064] In this embodiment, the first connector 321, the second connector 322, and the third connector 323 are respectively disposed at the upper end, the middle end, and the lower end of the tube beam body 31, and are respectively connected to the inner plate assembly 1 and the reinforcing plate assembly 2. The uniform arrangement increases the integration of the vehicle body structure, thereby improving the strength and rigidity of the C-pillar of the car.

[0065] In a more specific embodiment, the upper tube beam 311 and the lower tube beam 312 form a "T" shaped structure, and the inclination of the lower tube beam 312 corresponds to the inclination of the receiving cavity 4 formed between the reinforcing plate assembly 2 and the inner plate assembly 1. The first connector 321, the second connector 322 and the third connector 323 are evenly arranged at the upper end, the middle end and the lower end of the lower tube beam 312, so that the connection between the tube beam assembly 3 and the reinforcing plate assembly 2 and the inner plate assembly 1 is relatively stable.

[0066] Combination Figure 6-8 As shown, in some embodiments, the inner plate assembly 1 includes a mounting portion 11, on which a first connecting portion 111 for connecting the first connecting member 321 is provided.

[0067] In this embodiment, the first connecting part 111 connects to the first connecting member 321, improving the stability of the connection between the tube beam assembly 3 and the mounting part 11, thereby enhancing the strength and rigidity of the car C-pillar. Specifically, the first connecting member 321 is respectively sleeved on the horizontal upper tube beam 311 and the vertical lower tube beam 312, and ribs 36 are provided at both ends of the part sleeved on the upper tube beam 311 and the end of the part sleeved on the lower tube beam 312 away from the upper tube beam 311, to strengthen the stability of the connection between the upper tube beam 311 and the upper tube beam 312. More specifically, the inner panel assembly 1 also includes the front part 12 of the rear wheel arch outer panel, the rear seat belt guide ring mounting plate 13, and the upper rear seat belt mounting plate 14, which are respectively spot-welded to the mounting part 11.

[0068] Combination Figure 13 , Figure 17 As shown, in some embodiments, the first connecting part 111 includes a first bolt 1111 and a first through hole (not shown), and the first connecting member 321 is provided with a first threaded hole (not shown). The first bolt 1111 passes through the first through hole and is connected to the first threaded hole.

[0069] In this embodiment, the first connector 321 and the first connecting part 111 are connected by threads. The threaded connection is relatively tight, which improves the stability of the connection between the tube beam assembly 3 and the inner plate assembly 1, thereby improving the strength and rigidity of the car C-pillar.

[0070] Combination Figure 3-5 as well as Figure 13-15As shown, in some embodiments, the reinforcing plate assembly 2 includes an upper reinforcing plate 21 and a lower reinforcing plate 22 connected in sequence; the upper reinforcing plate 21 is provided with a second connecting portion 211 for connecting the second connecting member 322, and the lower reinforcing plate 22 is provided with a third connecting portion 221 for connecting the third connecting member 323.

[0071] In this embodiment, the second connecting part 211 connects to the second connecting member 322, and the third connecting part 221 connects to the third connecting member 323, which improves the stability of the connection between the tube beam assembly 3 and the reinforcing plate assembly 2, thereby enhancing the strength and rigidity of the car C-pillar. The connection between the upper reinforcing plate 21 and the lower reinforcing plate 22 is as follows: Figure 4 As shown. Specifically, the reinforcing plate assembly 2 also includes a door latch reinforcing plate 23 and a nut box 24. The door latch reinforcing plate 23 and the nut box 24 are welded to the upper reinforcing plate 21. The door latch reinforcing plate 23 reinforces the door latch of the car. The nut box 24 is provided with a movable nut plate (not shown) to facilitate adjustment of the gap surface difference between the rear door of the car and the car body.

[0072] In some embodiments, the second connecting portion 211 includes a second bolt 2111 and a second through hole (not shown), and the second connecting member 322 is provided with a second threaded hole (not shown), the second bolt 2111 passes through the second through hole and is connected to the second threaded hole; the third connecting portion 221 includes a third bolt 2211 and a third through hole (not shown), and the third connecting member 323 is provided with a third threaded hole (not shown), the third bolt 2211 passes through the third through hole and is connected to the third threaded hole.

[0073] In this embodiment, the second connector 322 and the second connector 211 are connected by threads, and the third connector 323 and the third connector 221 are connected by threads. The threaded connection is relatively tight, which improves the stability of the connection between the tube beam assembly 3 and the reinforcing plate assembly 2, thereby improving the strength and rigidity of the car C-pillar.

[0074] Combination Figure 10 and Figure 11 As shown, in a specific embodiment, the first connector 321 and the second connector 322 are provided with reinforcing ribs 35 to strengthen the connection strength between the pipe beam assembly 3 and the mounting part 11 and the reinforcing plate assembly 2, thereby improving the stability of the three.

[0075] Combination Figure 13 , Figure 16 As shown, in some embodiments, the upper tube beam 311 and the upper reinforcing plate 21 are connected by welding.

[0076] In this embodiment, the welding connection ensures a tight and stable connection between the upper tube beam 311 and the upper reinforcing plate 21, thereby improving the stability of the connection between the tube beam assembly 3 and the reinforcing plate assembly 2, and thus enhancing the strength and rigidity of the car C-pillar. Specifically, the shape of the side of the upper tube beam 311 closest to the upper reinforcing plate 21 corresponds to that of the upper reinforcing plate 21, and at least one welding part 34 is provided on the upper tube beam 311. The welding part 34 and the upper reinforcing plate 21 are attached and connected by welding. Multiple welding parts 34 further improve the stability between the upper tube beam 311 and the upper reinforcing plate 21.

[0077] Combination Figure 5 and Figure 8 As shown, the C-pillar tube beam structure also includes a seat belt mounting hole 5 for installing a seat belt. The seat belt mounting hole 5 penetrates the upper reinforcing plate 21 and the mounting part 11, so that the installation of the seat belt is not affected by the tube beam assembly 3 and does not affect the safety of passengers.

[0078] Combination Figure 18 As shown, the present invention also provides an installation method for a C-pillar tubular beam structure, used to install the C-pillar tubular beam structure on the C-pillar of a car frame, the steps of which include S10 to S30:

[0079] S10. Install the inner panel assembly 1 onto the C-pillar of the vehicle frame;

[0080] S20. Connect the pipe beam assembly 3 to the inner plate assembly 1;

[0081] S30. Cover the reinforcing plate assembly 2 onto the inner plate assembly 1, and connect the reinforcing plate assembly 2 and the pipe beam assembly 3.

[0082] Combination Figure 19 As shown, this step also includes S301 to S203:

[0083] S301. Weld the upper pipe beam 311 onto the upper reinforcing plate 21;

[0084] S302. Connect the first connector 321 to the first connecting part 111 using the first bolt 1111;

[0085] S303. The second connector 322 is connected to the second connecting part 211 by the second bolt 2111, and the third connector 323 is connected to the third connecting part 221 by the third bolt 2211.

[0086] In this embodiment, the welding connection makes the connection between the upper tube beam 311 and the upper reinforcing plate 21 tight and stable. Moreover, the tube beam assembly 3 is connected to the inner plate assembly 1 and the tube beam assembly 3 is connected to the reinforcing plate assembly 2 by threaded connection, which improves the stability of the connection between the tube beam assembly 3 and the inner plate assembly 1 and between the tube beam assembly 3 and the reinforcing plate assembly 2, thereby improving the strength and rigidity of the car C-pillar.

[0087] In this embodiment of the invention, by connecting the tube beam assembly 3 to the inner plate assembly 1 and covering the reinforcing plate assembly 2 on the inner plate assembly 1, the tube beam assembly 3 is positioned between the inner plate assembly 1 and the reinforcing plate assembly 2. Moreover, the tube beam assembly 3 connects the reinforcing plate assembly 2 and the inner plate assembly 1 respectively. Compared with the existing car body structure, this improves the strength and rigidity of the C-pillar of the car, thereby increasing the pressure resistance of the car roof and reducing the deformation of the car body structure caused by the car rolling over, thus protecting the safety of passengers.

[0088] Combination Figure 20 As shown, the present invention also provides a method for manufacturing a pipe beam assembly 3, wherein the first connector 321, the second connector 322, and the third connector 323 are made of cast aluminum. The first connector 321 is integrally connected to the upper pipe beam 311 and the lower pipe beam 312 using a casting process, and the second connector 322 and the third connector 323 are integrally connected to the lower pipe beam 312 using a casting process, thereby improving the overall stability of the pipe beam assembly 3. Specifically, the manufacturing method of the pipe beam assembly 3 includes steps S40 to S60:

[0089] S40. Place the formed tube beam body 31 into a mold cavity provided with a first connector 321, a second connector 322 and a third connector 323 for forming.

[0090] S50. Heat the aluminum alloy to a semi-solid temperature range, and inject the semi-solid aluminum alloy into the mold cavity at a preset pressure and preset speed.

[0091] In this step, the preset pressure and preset speed are based on the actual production requirements of the tube beam assembly 3.

[0092] S60, Increase pressure in the mold cavity and cool to form.

[0093] In this step, the mold cavity is subjected to pressure holding and cooling to form the aluminum alloy and the tube beam body 31 together, thereby forming the first connector 321, the second connector 322 and the third connector 323, and thus forming the tube beam assembly 3.

[0094] In this embodiment, the tube beam assembly 3 is connected into a whole by casting process, which improves the stability of the tube beam assembly 3, thereby improving the strength and rigidity of the C-pillar of the car, and further improving the pressure resistance of the car roof, reducing the deformation of the body structure caused by the car rollover, and protecting the safety of passengers.

[0095] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A C-pillar tubular beam structure for mounting on the C-pillar of an automobile frame, characterized in that, include: An inner panel assembly, one end of which is provided with a mounting part, which is connected to the C-pillar of the vehicle frame; A reinforcing plate assembly, which covers the mounting portion and has a receiving cavity between the reinforcing plate assembly and the mounting portion; A tube beam assembly is disposed within the receiving cavity, and the tube beam assembly is respectively connected to the reinforcing plate assembly and the mounting part; The tube beam assembly includes a tube beam body and a connecting assembly connected to the tube beam body, wherein the connecting assembly connects the reinforcing plate assembly and the mounting part respectively. The tube beam body includes an upper tube beam and a lower tube beam. The upper tube beam is laterally abutted against one end of the mounting part. One end of the lower tube beam is connected to the upper tube beam, and the other end extends longitudinally to the other end of the mounting part. The upper tube beam and the lower tube beam form a "T" shaped structure; The tube beam body is hollow inside, and the connecting component is sleeved on the tube beam body; The connecting assembly includes a first connector disposed between the upper tube beam and the lower tube beam, a second connector disposed on the lower tube beam, and a third connector disposed on the lower tube beam and at one end away from the upper tube beam. The first connector is connected to the mounting part, and the second connector and the third connector are respectively connected to the reinforcing plate assembly. The first connector is respectively sleeved on the horizontal upper pipe beam and the vertical lower pipe beam, and ribs are provided at both ends of the part sleeved on the upper pipe beam and at the end of the part sleeved on the lower pipe beam that is away from the upper pipe beam.

2. The C-column tube beam structure according to claim 1, characterized in that, The mounting part is provided with a first connecting part for connecting the first connector.

3. The C-column tube beam structure according to claim 2, characterized in that, The reinforcing plate assembly includes an upper reinforcing plate and a lower reinforcing plate connected in sequence; The upper reinforcing plate is provided with a second connecting part for connecting the second connecting member, and the lower reinforcing plate is provided with a third connecting part for connecting the third connecting member.

4. The C-column tube beam structure according to claim 3, characterized in that, The upper tube beam and the upper reinforcing plate are connected by welding.

5. An installation method for the C-pillar tubular beam structure as described in claim 3, used to install the C-pillar tubular beam structure on the C-pillar of an automobile frame, characterized in that, include: The inner panel assembly is installed on the C-pillar of the vehicle frame; Connect the tube beam assembly to the inner plate assembly; The reinforcing plate assembly is placed over the inner plate assembly, and the reinforcing plate assembly and the tube beam assembly are connected. The upper pipe beam is welded to the upper reinforcing plate; Connect the first connector to the first connecting part; The second connector is attached to the second connecting part, and the third connector is attached to the third connecting part.

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