Top cover middle cross beam structure

Abstract

The utility model relates to the technical field of automobile manufacturing, in particular to a roof middle cross beam structure which comprises a roof middle cross beam (1). A cavity (2) is formed in the top cover middle cross beam (1); a top cover outer plate (3) is arranged at the top of the top cover middle cross beam (1); a buffer structure is arranged between the top cover outer plate (3) and the top cover middle cross beam (1); side wall assemblies (4) are arranged on the two sides of the top cover middle cross beam (1); compared with a traditional top cover middle cross beam with a U-shaped section, the top cover middle cross beam with the cavity is higher in bending resistance and torsion resistance, and the overall structural strength of the top cover middle cross beam can be effectively enhanced through the cavity; the two ends of the top cover middle cross beam are connected with the side wall assemblies through resistance spot welding, part of collision loads can be transmitted to the side wall assembly on the other side through the top cover middle cross beam to be dispersed, and therefore the impact resistance is better.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, and in particular to a crossbeam structure in a roof. Background Art

[0002] As an important component of the vehicle body structure, the center crossbeam of the vehicle roof plays a vital role in maintaining the vehicle structure and protecting the safety of the passengers. When subjected to the top pressure load of snow accumulation or rollover accidents, the structure of the vehicle roof area will undergo corresponding changes and directly affect the performance. Therefore, a sufficiently strong center crossbeam of the roof is required to meet the modal and dent resistance requirements. The existing center crossbeams of vehicle roofs are mostly U-shaped in cross-section. The performance requirements are met by simply increasing the material thickness and X-direction cross-sectional dimensions of the crossbeam without restriction. However, the support for vehicle safety in side impact is not strong enough.

[0003] After searching, the applicant found that the Chinese patent document with publication number 104925141A disclosed a variable thickness automobile roof cross beam on September 23, 2015, wherein the roof cross beam body is a thin-walled structure, which includes a left section of the body, a left transition section, a middle section of the body, a right transition section and a right section of the body in sequence; the left section and the right section of the body are connected to the side B-pillar of the automobile, and the sections are of uniform thickness; the left transition section and the right transition section are of continuously variable thickness structure, and their thickness gradually decreases from the thick areas at both ends to the thin area in the middle section of the body; the thickness of the middle section of the body is the thinnest in the roof cross beam body; this device cannot solve the above-mentioned technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide a top cover middle cross beam structure that can enhance the strength of the top cover middle cross beam structure. Utility Model Content

[0005] The purpose of the utility model is to provide a top cover middle cross beam structure which can enhance the strength of the top cover middle cross beam structure.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a roof cover middle cross beam structure, including a roof cover middle cross beam; a cavity is provided in the roof cover middle cross beam; a roof cover outer panel is provided on the top of the roof cover middle cross beam; a buffer structure is provided between the top cover outer panel and the roof cover middle cross beam; and side panel assemblies are provided on both sides of the roof cover middle cross beam.

[0007] The crossbeam in the top cover includes a crossbeam body; the cavity is arranged in the crossbeam body; connecting sections are provided at both ends of the crossbeam body; the buffer structure is arranged between the crossbeam body and the top cover outer panel; and the connecting section is connected to the side panel assembly.

[0008] The crossbeam body includes a tube body; the cavity is provided in the tube body; and the cross section of the tube body is an elliptical ring.

[0009] The buffer structure includes vibration isolation glue; the vibration isolation glue is arranged on the tube body and in the middle of the top surface of the tube body; the vibration isolation glue is connected to the top cover outer plate.

[0010] A plurality of vibration isolation glues are evenly distributed on the top surface of the tube body.

[0011] The side panel assembly includes a B-pillar; the connecting section is connected to the B-pillar.

[0012] The end of the connecting section away from the tube body is welded to the top of the B-pillar.

[0013] The beneficial effects of this application are:

[0014] The crossbeam body of the present application is a tube with an elliptical ring cross section; a cavity is provided in the tube; the crossbeam body structure of the present application has stronger bending and torsional resistance than the traditional U-shaped cross-section top cover middle crossbeam, and can effectively enhance the overall structural strength of the top cover middle crossbeam; the connecting sections at both ends of the crossbeam body of the present application are connected to the top of the B-pillar by resistance spot welding, and part of the collision load can be transferred to the other side side panel assembly through the top cover middle crossbeam to disperse, thereby having better impact resistance; the tubular crossbeam has a simple process and does not require the development of a mold, and can be produced by bending on a bending machine, which effectively reduces production costs.

[0015] The top of the beam body of the present application is evenly provided with multiple vibration isolation glues, and the vibration isolation glue is arranged in the middle of the top surface of the beam body, which can achieve stable bonding between the beam body and the outer panel of the top cover; at the same time, the vibration isolation glue can buffer and absorb vibrations, thereby further improving the impact resistance of the beam in this top cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the installation status of the beam structure in this top cover.

[0018] Figure 2 This is a top view of the beam structure in this roof.

[0019] Figure 3 for Figure 2 The cross-sectional view at BB of the beam structure in the top cover is shown.

[0020] Figure 4 for Figure 2 The cross-sectional view at CC of the beam structure in the top cover is shown.

[0021] The marks in the above figure are:

[0022] The following are marked in the figure:

[0023] 1. The crossbeam in the top cover,

[0024] 2. Cavity,

[0025] 3. Top cover outer panel,

[0026] 4. Side assembly, 401, B-pillar,

[0027] 5. Beam body, 501. Connecting section, 502. Tube body,

[0028] 6. Vibration isolation glue. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate its implementation.

[0030] Figure 1 The top cover middle cross beam structure shown includes a top cover middle cross beam 1; a cavity 2 is provided in the top cover middle cross beam 1; a top cover outer panel 3 is provided on the top of the top cover middle cross beam 1; a buffer structure is provided between the top cover outer panel 3 and the top cover middle cross beam 1; and side panel assemblies 4 are provided on both sides of the top cover middle cross beam 1.

[0031] Compared with the traditional U-shaped cross-section top cover middle cross beam 1, the top cover middle cross beam 1 with a cavity 2 has stronger bending and torsional resistance, and the cavity 2 can effectively enhance the overall structural strength of the top cover middle cross beam 1; the two ends of the top cover middle cross beam 1 of the present application are connected to the side panel assembly 4 by resistance spot welding, and part of the collision load can be transferred to the other side side panel assembly 4 through the top cover middle cross beam 1 to disperse, thereby having better impact resistance; the tubular cross beam process is simple and does not require the development of molds. It can be made by bending with a bending machine, which effectively reduces production costs.

[0032] The crossbeam 1 in the top cover includes a crossbeam body 5; a cavity 2 is provided in the crossbeam body 5; connecting sections 501 are provided at both ends of the crossbeam body 5; a buffer structure is provided between the crossbeam body 5 and the top cover outer panel 3; and the connecting section 501 is connected to the side panel assembly 4.

[0033] The connecting section 501 and the crossbeam body 5 are an integral structure; connecting sections 501 are provided at both ends of the crossbeam body 5; the connection between the connecting section 501 and the side panel assembly 4 can achieve a stable connection between the crossbeam 1 in the top cover and the side panel assembly 4; the buffer structure is fixedly connected between the crossbeam body 5 and the top cover outer panel 3 to achieve a stable connection between the two.

[0034] The crossbeam body 5 includes a tube body 502 ; the cavity 2 is provided in the tube body 502 ; and the cross section of the tube body 502 is an elliptical ring.

[0035] The cross section of the tube body 502 is an elliptical ring, so that the bending and torsional resistance of the beam body 5 is stronger, making the structural strength of the beam body 5 higher; at the same time, the tubular beam process is simple and does not require the development of molds. It can be made by bending with a bending machine, which effectively reduces production costs.

[0036] The buffer structure includes a vibration-isolating rubber 6 ; the vibration-isolating rubber 6 is provided on the tube body 502 and in the middle of the top surface of the tube body 502 ; the vibration-isolating rubber 6 is connected to the top cover outer plate 3 .

[0037] The vibration isolation glue 6 can achieve stable bonding between the tube body 502 and the top cover outer panel 3; at the same time, the vibration isolation glue 6 has good vibration isolation effect, good elasticity, excellent damping characteristics, long service life and strong adaptability; at the same time, the vibration isolation glue 6 can effectively absorb and reduce vibration, further improving the impact resistance of the cross beam 1 in this top cover.

[0038] A plurality of vibration isolation glues 6 are evenly distributed on the top surface of the tube body 502 .

[0039] The uniform distribution of the vibration isolation glue 6 on the top surface of the tube body 502 can improve the connection stability between the top cover middle cross beam 1 and the top cover outer plate 3; it can make the force on the top cover middle cross beam 1 more uniform, so that it can withstand a larger load.

[0040] The side panel assembly 4 includes a B-pillar 401 ; the connecting section 501 is connected to the B-pillar 401 .

[0041] The connecting section 501 is fixedly connected to the top of the B-pillar 401, thereby achieving a stable connection between the top cover center cross beam 1 and the side panel assembly 4; at the same time, part of the collision load can be transferred to the B-pillar 401 through the top cover center cross beam 1 to be dispersed, thereby improving the impact resistance.

[0042] The end of the connecting section 501 away from the tube body 502 is welded to the top of the B-pillar 401 .

[0043] The connecting section 501 is connected to the top of the B-pillar 401 by resistance spot welding; two welding points are symmetrically provided between the connecting section 501 and the B-pillar 401 to achieve a stable connection between the two.

[0044] The specific workflow of this utility model is as follows:

[0045] The connecting section 501 of the roof center cross beam 1 is resistance spot welded to the left and right side panel assemblies 4 of the vehicle body; the cross beam body 5 of the roof center cross beam 1 is coated with vibration isolation glue 6 and connected to the roof outer panel 3; part of the collision load needs to be transferred to the other side side panel assembly 4 through the roof center cross beam 1 to be dispersed; the tubular cross beam has a simple process and does not require the development of molds, and can be produced by bending on a bending machine.

[0046] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A crossbeam structure in a roof, characterized by: The invention comprises a top cover middle cross beam (1); a cavity (2) is provided in the top cover middle cross beam (1); a top cover outer plate (3) is provided on the top of the top cover middle cross beam (1); a buffer structure is provided between the top cover outer plate (3) and the top cover middle cross beam (1); and side enclosure assemblies (4) are provided on both sides of the top cover middle cross beam (1).

2. A roof middle crossbeam structure according to claim 1, characterized in that: The crossbeam (1) in the top cover includes a crossbeam body (5); the cavity (2) is provided in the crossbeam body (5); connecting sections (501) are provided at both ends of the crossbeam body (5); the buffer structure is provided between the crossbeam body (5) and the top cover outer panel (3); and the connecting section (501) is connected to the side panel assembly (4).

3. A roof middle crossbeam structure according to claim 2, characterized in that: The crossbeam body (5) comprises a tube body (502); the cavity (2) is provided in the tube body (502); and the cross section of the tube body (502) is an elliptical ring.

4. A roof middle crossbeam structure according to claim 3, characterized in that: The buffer structure includes a vibration-isolating rubber (6); the vibration-isolating rubber (6) is arranged on the tube body (502) and is arranged in the middle of the top surface of the tube body (502); the vibration-isolating rubber (6) is connected to the top cover outer plate (3).

5. A roof middle crossbeam structure according to claim 4, characterized in that: A plurality of vibration isolation glues (6) are evenly distributed on the top surface of the tube body (502).

6. A roof middle crossbeam structure according to any one of claims 3 to 5, characterized in that: The side panel assembly (4) includes a B-pillar (401); the connecting section (501) is connected to the B-pillar (401).

7. A roof middle crossbeam structure according to claim 6, characterized in that: The end of the connecting section (501) away from the tube body (502) is welded to the top of the B-pillar (401).

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