Top cover middle cross beam structure assembly, automobile body and automobile

Abstract

The utility model relates to a top cover middle cross beam structure assembly, an automobile body and an automobile, the top cover middle cross beam structure assembly comprises a top cover cross beam upper plate, a top cover cross beam lower plate, a first side wall connecting piece and a second side wall connecting piece, the top cover cross beam upper plate is provided with a first welding part, and the top cover cross beam lower plate is provided with a second welding part; the first side wall connecting pieces are arranged at the two ends of the top cover cross beam lower plate, third welding parts are arranged at one ends of the first side wall connecting pieces, the second side wall connecting pieces are arranged below the first side wall connecting pieces, and fourth welding parts are arranged at one ends of the second side wall connecting pieces; the end face of the second welding part abuts against the end face of the third welding part, the first welding part is connected with the tops of the second welding part and the third welding part, and the fourth welding part is connected with the bottoms of the second welding part and the third welding part. Therefore, each welding spot of the welding area is in spot welding connection with less than three layers, and the situation that the welding effect is affected due to welding defects during welding of the multi-layer metal plate structural part is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to a top cover middle cross beam structure assembly, a vehicle body and an automobile. Background Art

[0002] Among the models with sunroofs, there are mainly two mainstream roof types: fixed glass panoramic sunroof and segmented openable panoramic sunroof. Fixed glass panoramic sunroof has advantages such as good light transmittance, wide field of vision, simple shape, etc., but it also has disadvantages such as poor light and heat insulation, slow heat dissipation in the car, and cannot be opened. The segmented openable panoramic sunroof has advantages such as good light transmittance and partial opening for ventilation. The middle part of the car body is usually equipped with a top cover middle crossbeam assembly connected to the side wall to improve the strength performance of the whole vehicle.

[0003] In the existing top cover middle beam assembly, it usually includes multiple sheet metal components, which are usually connected by structural adhesive or bolts. When structural adhesive is used for connection, it is easy to have loose bonding, which will cause the sheet metal components to separate, thus causing the top cover middle beam assembly to fail. When bolts are used for connection, corresponding mounting holes need to be set on multiple plates, which requires high positioning accuracy and assembly accuracy of the mounting holes. At the same time, using a large number of bolts for fixing will also increase the weight of the top cover middle beam assembly, thereby increasing the total weight of the vehicle body, which is not conducive to achieving lightweight. Utility Model Content

[0004] One of the purposes of the present application is to provide a roof center cross beam structure assembly to solve the problem that the roof center cross beam assembly in the prior art uses structural adhesive or bolts to connect multiple sheet metal structural parts, which has unreliable connection or causes heavy product weight; the second purpose is to provide a car body; and the third purpose is to provide a car.

[0005] In order to achieve the above purpose, the technical solution adopted in this application is as follows:

[0006] A top cover middle cross beam structure assembly, comprising:

[0007] A top cover cross beam upper plate, wherein the top cover cross beam upper plate has a first welding portion extending along a length direction thereof;

[0008] A lower plate of a roof cross beam, wherein the lower plate of the roof cross beam has a second welding portion extending along a length direction thereof;

[0009] a first side enclosure connecting member, the first side enclosure connecting member being arranged at two ends of the lower plate of the roof cross beam, and one end of the first side enclosure connecting member being provided with a third welding portion;

[0010] a second side enclosure connecting member, the second side enclosure connecting member being arranged below the first side enclosure connecting member, and a fourth welding portion being arranged at one end of the second side enclosure connecting member;

[0011] The end surface of the second welding part abuts against the end surface of the third welding part, the first welding part is connected to the top of the second welding part and the third welding part respectively, and the fourth welding part is connected to the bottom of the second welding part and the third welding part respectively.

[0012] According to the above technical means, each welding point in the welding area is spot-welded with less than three layers, which avoids the welding defects (such as failure to penetrate the weld, etc.) when welding multi-layer sheet metal structural parts, affecting the welding effect, thereby causing the structural strength of the roof middle cross beam structure assembly to be unable to be guaranteed. Furthermore, the present application achieves the fixed connection of the top cover cross beam upper plate, the top cover cross beam lower plate, the first side enclosure connector and the second side enclosure connector in the top cover middle cross beam structure assembly through welding, which can ensure the connection effect and avoid the increase in weight of the top cover middle cross beam structure assembly due to the addition of bolts.

[0013] Furthermore, the first welding parts are provided on both sides of the upper plate of the roof cover beam in the length direction, and the second welding parts are provided on both sides of the lower plate of the roof cover beam in the length direction, and the first welding parts are connected to the second welding parts on the corresponding sides, and the upper plate of the roof cover beam and the lower plate of the roof cover beam are enclosed to form a first cavity.

[0014] According to the above technical means, the structural strength and rigidity of the roof cover cross beam structure assembly can be increased by forming a hollow cavity between the roof cover cross beam upper plate and the roof cover cross beam lower plate.

[0015] Furthermore, a weight-reducing portion is provided on the lower plate of the top cover crossbeam, and the weight-reducing portion has one or more hollow structures.

[0016] According to the above technical means, the weight of the lower plate of the roof cross beam is reduced without affecting the connection between the lower plate of the roof cross beam and other sheet metal structural parts, which is beneficial to reducing the weight of the cross beam structure assembly in the roof.

[0017] Furthermore, the first side enclosure connector has a fifth welding portion on both sides in the length direction, and the second side enclosure connector has a sixth welding portion on both sides in the length direction, the fifth welding portion is connected to the sixth welding portion on its corresponding side, and the first side enclosure connector and the second side enclosure connector together form a second cavity.

[0018] According to the above technical means, the fixed connection between the first side enclosure connector and the second side enclosure connector is realized, so that the first side enclosure connector and the second side enclosure connector form an inner and outer panel connection structure. The first side enclosure connector and the second side enclosure connector together form a second cavity, which can be used to increase the overall structural strength and rigidity of the first side enclosure connector and the second side enclosure connector.

[0019] Further, the upper plate of the roof cross beam has a first positioning portion, the lower plate of the roof cross beam has a second positioning portion, and the first positioning portion is matched with the second positioning portion;

[0020] The first side enclosure connecting member has a third positioning portion, the second side enclosure connecting member has a fourth positioning portion, and the third positioning portion is matched with the fourth positioning portion.

[0021] According to the above technical means, the assembly positioning between the upper plate of the roof cross beam and the lower plate of the roof cross beam, as well as the assembly positioning between the first side panel connecting member and the second side panel connecting member can be achieved before welding.

[0022] A vehicle body includes the above-mentioned roof cover middle cross beam structure assembly, and also includes side panels and a skylight frame connected to the roof cover middle cross beam structure assembly, the side panels are respectively connected to the first side panel connecting member and the second side panel connecting member, and the second side panel connecting member has a first through hole.

[0023] According to the above technical means, the roof crossbeam structure assembly is connected to the side of the vehicle body as a whole, providing a mounting point for the canopy frame, which is beneficial to improving the structural strength and torsional strength of the whole vehicle, thereby improving the torsional performance of the whole vehicle. The first through hole can be used as a welding through hole, which facilitates the welding gun to extend into the cavity formed by the first side enclosure connector, the second side enclosure connector and the side enclosure for welding operations.

[0024] Further, the top cover cross beam upper plate has a first frame connection portion, and the top cover cross beam lower plate has a second through hole arranged opposite to the first frame connection portion;

[0025] The first side surrounding connecting member has a second frame connecting portion, and the second side surrounding connecting member has a third through hole arranged opposite to the second frame connecting portion.

[0026] According to the above technical means, multiple fixed connection points are formed between the roof middle cross beam structure assembly and the canopy frame through the first skeleton connection part and the second skeleton connection part, so that a rigid connection is formed between the canopy frame and the roof middle cross beam structure assembly, and the second through hole and the third through hole are used to extend the installation tool or the connecting part, so as to facilitate the connection between the canopy frame and the roof middle cross beam structure assembly.

[0027] Furthermore, the first side surrounding connecting member and the second side surrounding connecting member both have a recessed portion, and the recessed portion has the second skeleton connecting portion or the third through hole.

[0028] According to the above technical means, the recessed portion provides installation space for the canopy rails on both sides of the canopy frame, which is conducive to the installation of the folding canopy. The recessed portion has a second frame connecting portion or a third through hole, which is convenient for the bottom of both sides of the canopy frame to be embedded in the recessed portion to achieve a fixed connection between the two.

[0029] Furthermore, the canopy frame has a third cavity, and the third cavity is located above the upper plate of the roof crossbeam.

[0030] According to the above technical means, it is convenient to form a double-cavity structure in the longitudinal direction of the top cover, which can improve the rigidity of the vehicle body top cover and significantly improve the torsional strength and torsional performance of the whole vehicle.

[0031] A car comprises a car body, wherein the car body is provided with the above-mentioned car body.

[0032] Beneficial effects of this application:

[0033] (1) The present application realizes the fixed connection of the top cover cross beam upper plate, the top cover cross beam lower plate, the first side panel connector and the second side panel connector in the top cover cross beam structure assembly by welding, which can ensure the connection effect and avoid the increase of weight of the top cover cross beam structure assembly due to the addition of bolts. By limiting the connection method of the first welding part, the second welding part, the third welding part and the fourth welding part during welding, each welding point in the welding area can be spot welded with less than three layers, avoiding the welding defects (such as inability to penetrate the weld) when welding multi-layer sheet metal structural parts, which affects the welding effect and causes the structural strength of the top cover cross beam structure assembly to be unable to be guaranteed. (2) The first side panel connector and the second side panel connector in the present application adopt the inner and outer plate connection form. On the premise of meeting the structural strength of the connector, the movement space of the canopy slide rail is avoided by the recessed part, and the canopy frame is provided with mounting points on both sides, so that the torsional strength of the whole vehicle is significantly improved. The roof middle cross beam structure assembly of the present application forms a cavity structure through the roof upper cross beam plate and the roof lower cross beam plate, and then connects to the body side to form a frame structure, providing an installation point in the middle area of ​​the roof for the installation of the skylight frame. After the roof middle cross beam structure assembly is rigidly connected to the skylight frame, a double cavity structure is formed in the longitudinal direction of the roof, which can significantly improve the torsional strength and torsional performance of the entire vehicle. Even if the rear cross beam of the roof is removed on some models, the roof middle cross beam structure assembly provided by the present application can still enable the automobile roof cross beam structure to maintain sufficient strength and rigidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 An exploded view of the crossbeam structure assembly in the top cover provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of the structure of the crossbeam structure assembly in the top cover provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of the structure of the top cover crossbeam upper plate provided in an embodiment of the present application;

[0037] Figure 4 A schematic diagram of the structure of the lower plate of the top cover cross beam provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of the structure of a first side enclosure connector provided in an embodiment of the present application;

[0039] Figure 6 A schematic diagram of the structure of a second side enclosure connector provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of welding of a crossbeam structure assembly in a top cover provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of a partial structure of a vehicle body provided in an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of the connection between the side panel and the crossbeam structure assembly in the top cover provided in an embodiment of the present application;

[0043] Fig.10 A schematic diagram of the connection between the crossbeam structure assembly in the top cover and the canopy frame provided in an embodiment of the present application;

[0044] Fig.11 Provided in the embodiments of this application Fig.10 A front view of

[0045] Fig.12 The embodiment of the present application provides Fig.11 Sectional view of AA in the middle;

[0046] Fig.13 The embodiment of the present application provides Fig.11 Cross-sectional view of BB.

[0047] Among them, 1-top cover beam upper plate; 11-first welding part; 12-first positioning part; 13-first frame connection part; 2-top cover beam lower plate; 21-second welding part; 22-weight reduction part; 23-second positioning part; 24-second through hole; 3-first side enclosure connector; 31-third welding part; 32-fifth welding part; 33-third positioning part; 34-second frame connection part; 35-first recessed part; 36-seventh welding part; 4-second side enclosure connector; 41-fourth welding part; 42-sixth welding part; 43-fourth positioning part; 44-first through hole; 45-third through hole; 46-second recessed part; 47-eighth welding part; 5-side enclosure; 6-sky frame. DETAILED DESCRIPTION

[0048] The following will describe the implementation methods of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, not for limiting the scope of protection of the present application.

[0049] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0050] See also Figures 1 to 13 This embodiment provides a roof cross beam structure assembly, including a roof cross beam upper plate 1, a roof cross beam lower plate 2, a first side enclosure connecting member 3 and a second side enclosure connecting member 4. The roof cross beam upper plate 1 has a first welding portion 11 extending along its length direction. Figure 3 The lower plate 2 of the roof cross beam has a second welding portion 21 extending along its length direction. Figure 4 The first side enclosure connecting member 3 is disposed at both ends of the lower plate 2 of the roof cross beam, and a third welding portion 31 is disposed at one end of the first side enclosure connecting member 3 close to the lower plate 2 of the roof cross beam, as shown in FIG. Figure 5 The second side enclosure connecting member 4 is disposed below the first side enclosure connecting member 3, and a fourth welding portion 41 is disposed at one end of the second side enclosure connecting member 4 close to the lower plate 2 of the roof cross beam, as shown in FIG. Figure 6The end surface of the second welding part 21 is abutted against the end surface of the third welding part 31, so as to realize the splicing between the roof cross beam lower plate 2 and the first side enclosure connecting member 3, the first welding part 11 is respectively connected to the top of the second welding part 21 and the third welding part 31, and the fourth welding part 41 is respectively connected to the bottom of the second welding part 21 and the third welding part 31, so that each welding point in the welding area is spot-welded with less than three layers, as shown in FIG. Figure 7 As shown, it is possible to avoid the welding defects (such as failure to penetrate the weld) that affect the welding effect when welding multi-layer sheet metal structural parts, thereby causing the structural strength of the roof middle cross beam structure assembly to be unable to be guaranteed. Furthermore, the present application achieves the fixed connection of the roof middle cross beam upper plate 1, the roof middle cross beam lower plate 2, the first side enclosure connector 3 and the second side enclosure connector 4 in the roof middle cross beam structure assembly by welding, which can ensure the connection effect and avoid the increase in weight of the roof middle cross beam structure assembly caused by the addition of bolts.

[0051] In some embodiments of this application, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.11 and Fig.12 , both sides of the upper plate 1 of the roof beam in the length direction are provided with a first welding portion 11, and both sides of the lower plate 2 of the roof beam in the length direction are provided with a second welding portion 21, such as Figure 3 and Figure 4 As shown, the first welding portion 11 is connected to the second welding portion 21 on its corresponding side to achieve a fixed connection between the top cover beam upper plate 1 and the top cover beam lower plate 2. Specifically, the length of the first welding portion 11 is greater than the length of the second welding portion 21. The first welding portion 11 is the first flange on both sides of the length direction of the top cover beam upper plate 1, and the second welding portion 21 is the second flange on both sides of the length direction of the top cover beam lower plate 2. In the middle area of ​​the first welding portion 11, the first welding portion 11 and the second welding portion 21 are connected by two-layer spot welding. Along the direction from the center to the end of the first welding portion 11, the first welding portion 11 is first connected by three-layer spot welding with the second welding portion 21 and the fourth welding portion 41, and then connected by three-layer spot welding with the third welding portion 31 and the fourth welding portion 41. Figure 7 shown.

[0052] The top cover cross beam upper plate 1 and the top cover cross beam lower plate 2 are combined to form a first cavity, such as Fig.11 and Fig.12 As shown, the structural strength and rigidity of the roof crossbeam structure assembly can be increased by forming a hollow cavity.

[0053] In some embodiments of this application, please refer to Figure 4The lower plate 2 of the top cover cross beam has a weight reduction portion 22, and the weight reduction portion 22 has one or more hollow structures. Specifically, the weight reduction portion 22 is one or more hollow structures arranged in the non-welded area in the middle of the lower plate 2 of the top cover cross beam, which reduces the weight of the lower plate 2 of the top cover cross beam without affecting the connection between the lower plate 2 of the top cover cross beam and other sheet metal structural parts, which is conducive to reducing the weight of the cross beam structure assembly in the top cover. The multiple hollow structures in the weight reduction portion 22 are symmetrically arranged on the plate body of the lower plate 2 of the top cover cross beam to avoid uneven force on the lower plate 2 of the top cover cross beam.

[0054] In some embodiments of this application, please refer to Figure 5 and Figure 6 , the first side enclosure connector 3 has a fifth welding portion 32 on both sides of the length direction, and the second side enclosure connector 4 has a sixth welding portion 42 on both sides of the length direction, and the fifth welding portion 32 is connected to the sixth welding portion 42 on its corresponding side, which is used to realize the fixed connection between the first side enclosure connector 3 and the second side enclosure connector 4, so that the first side enclosure connector 3 and the second side enclosure connector 4 form an inner and outer plate connection structure. Specifically, the third welding portion 31 and the fifth welding portion 32 are both flanges on both sides of the length direction of the first side enclosure connector 3 (respectively recorded as the third flange and the fifth flange), and the third welding portion 31 and the fifth welding portion 32 can be a transition connection, which can be made by a stamping process. The fourth welding portion 41 and the sixth welding portion 42 are both flanges on both sides of the length direction of the second side enclosure connector 4 (respectively recorded as the fourth flange and the sixth flange), and the fourth welding portion 41 and the sixth welding portion 42 can also be a transition connection.

[0055] In some embodiments of this application, please refer to Fig.11 and Fig.13 The first side enclosure connector 3 and the second side enclosure connector 4 together form a second cavity, which can be used to increase the overall structural strength and rigidity of the first side enclosure connector 3 and the second side enclosure connector 4.

[0056] In some embodiments of this application, please refer to Figure 3 and Figure 4 A first positioning portion 12 is provided on the upper plate 1 of the roof cross beam, and a second positioning portion 23 is provided on the lower plate 2 of the roof cross beam. The first positioning portion 12 is matched with the second positioning portion 23 to achieve assembly positioning between the upper plate 1 of the roof cross beam and the lower plate 2 of the roof cross beam before welding.

[0057] In some embodiments of this application, please refer to Figure 5 and Figure 6 The first side enclosure connecting member 3 has a third positioning portion 33, and the second side enclosure connecting member 4 has a fourth positioning portion 43. The third positioning portion 33 is matched with the fourth positioning portion 43 to achieve assembly positioning between the first side enclosure connecting member 3 and the second side enclosure connecting member 4 before welding.

[0058] Specifically, the positioning portion may be one or more positioning holes, or one or more positioning bosses.

[0059] The present application also provides a vehicle body, including the roof middle cross beam structure assembly described in the above embodiment, and also including a side panel 5 and a canopy frame 6 connected to the roof middle cross beam structure assembly, wherein the side panel 5 is respectively connected to the first side panel connector 3 and the second side panel connector 4, such as Figure 8 and Fig. 9 As shown, the overall structural strength of the vehicle body is improved by connecting the top cover middle crossbeam structure assembly with the side panels 5 on both sides of the vehicle body.

[0060] Specifically, the first side enclosure connector 3 has a seventh welding portion 36 at one end close to the side enclosure 5, and the second side enclosure connector 4 has an eighth welding portion 47 at one end close to the side enclosure 5, and both the seventh welding portion 36 and the eighth welding portion 47 are used to connect to the side enclosure 5. Fig. 9 The first side enclosure connector 3 and the second side enclosure connector 4 are both spot-welded to the side enclosure 5, so that the roof crossbeam structure assembly and the vehicle body side enclosure 5 are connected as a whole, which is beneficial to improving the structural strength and torsional strength of the whole vehicle, thereby improving the torsional performance of the whole vehicle.

[0061] In some embodiments of the present application, the seventh welding portion 36 is the seventh flange at one end of the first side panel connector 3 close to the side panel 5, and the eighth welding portion 47 is the eighth flange at one end of the second side panel connector 4 close to the side panel 5. The seventh flange and the eighth flange are fixedly connected to the side panel 5 by spot welding.

[0062] In order to facilitate spot welding of the seventh welding portion 36 and the side enclosure 5, in some embodiments of the present application, the second side enclosure connector 4 has a first through hole 44, which can be used as a welding through hole to facilitate the welding gun to extend into the cavity formed by the first side enclosure connector 3, the second side enclosure connector 4 and the side enclosure 5 to perform welding operations, such as Fig. 9 shown.

[0063] The skylight frame 6 is connected to the middle crossbeam structure assembly of the top cover, which provides a middle installation point of the top cover for the skylight frame 6, which is conducive to forming a rigid connection between the skylight frame 6 and the main body of the vehicle body, and further improving the torsional strength and torsional performance of the whole vehicle.

[0064] Further, in some embodiments of the present application, please refer to Figure 3 , Figure 4 , Fig.11 and Fig.12The top cover cross beam upper plate 1 has a first frame connection portion 13, and the top cover cross beam lower plate 2 has a second through hole 24 arranged opposite to the first frame connection portion 13. The first frame connection portion 13 is used to form a fixed connection with the canopy frame 6, including one or more first canopy frame mounting holes. The second through hole 24 can be used as a first canopy frame mounting through hole, which facilitates the canopy mounting tool to extend into the first cavity formed by the top cover cross beam upper plate 1 and the top cover cross beam lower plate 2 for fixed connection operation.

[0065] In some embodiments of this application, please refer to Figure 5 , Figure 6 , Fig.11 and Fig.13 The first side enclosure connector 3 has a second frame connector 34, and the second side enclosure connector 4 has a third through hole 45 arranged opposite to the second frame connector 34. The second frame connector 34 includes two second canopy frame mounting holes arranged on both sides of the first side enclosure connector 3, which are used to form a fixed connection with the canopy frame 6. The third through holes 45 are arranged one-to-one with the second frame connector 34, so as to facilitate the insertion of the connector, thereby realizing the fixed connection between the first side enclosure connector 3, the second side enclosure connector 4 and the canopy frame 6.

[0066] In some embodiments of this application, please refer to Figure 1 , Figure 8 and Fig.10 The first side enclosure connector 3 and the second side enclosure connector 4 both have a recessed portion, which is convenient for providing installation space for the canopy slide rails on both sides of the canopy frame 6, which is conducive to the installation of the folding canopy. The recessed portion has a second frame connecting portion 34 or a third through hole 45, which is convenient for the two sides of the canopy frame 6 to be embedded in the recessed portion to achieve a fixed connection between the two. Specifically, the first side enclosure connector 3 has a first recessed portion 35 in the middle, and the second frame connecting portions 34 are provided on both sides of the first recessed portion 35. The second side enclosure connector 4 has a second recessed portion 46 in the middle, and the third through holes 45 are provided on both sides of the second recessed portion 46. Figure 1 , Figure 5 and Figure 6 shown.

[0067] In some embodiments of this application, please refer to Fig.11 and Fig.12 The skylight frame 6 has a third cavity, which is located above the upper plate 1 of the roof crossbeam, so as to form a double-cavity structure in the longitudinal direction of the roof, thereby improving the rigidity of the vehicle body roof and significantly improving the torsional strength and torsional performance of the entire vehicle.

[0068] The embodiment of the present application also proposes a car, including a car body, the car body is provided with the car body described in the above embodiment. The top of the car is provided with an openable panoramic sunroof, and the sunroof frame 6 and other components can be supported by the crossbeam structure assembly in the top cover.

[0069] In some embodiments of this application, please refer to Figures 1 to 13 , the assembly method of the above-mentioned vehicle body is as follows:

[0070] Step 1: The top cover cross beam upper plate 1 and the top cover cross beam lower plate 2 are assembled and positioned by the first positioning portion 12 and the second positioning portion 23, and spot welding is performed on the first welding portion 11 and the second welding portion 21; the first side enclosure connector 3 and the second side enclosure connector 4 are assembled and positioned by the third positioning portion 33 and the fourth positioning portion 43, and spot welding is performed on the fifth welding portion 32 and the sixth welding portion 42;

[0071] Step 2: The end of the third welding part 31 is end-face-butted with the end of the second welding part 21, and the three-layer spot welding connection of the first welding part 11, the second welding part 21 and the fourth welding part 41 is performed, and the three-layer spot welding connection of the first welding part 11, the third welding part 31 and the fourth welding part 41 is performed; the overall welding of the cross beam structure assembly in the top cover is completed;

[0072] Step 3: spot-weld the seventh welding portion 36 of the first side enclosure connector 3 to the side enclosure 5, and spot-weld the eighth welding portion 47 of the second side enclosure connector 4 to the side enclosure 5, so as to achieve fixed connection between the top cover middle crossbeam structure assembly and the side enclosures 5 on both sides of the vehicle body, thereby forming a frame structure;

[0073] Step 4: hoist the canopy frame 6 above the middle crossbeam structure assembly of the roof, and after assembly and positioning, realize the rigid connection between the canopy frame 6 and the middle crossbeam structure assembly of the roof through the first frame connection part 13 and the second frame connection part 34 .

[0074] The first side enclosure connector 3 and the second side enclosure connector 4 in the embodiment of the present application adopt the form of inner and outer plate connection. Under the premise of satisfying the structural strength of the connector, the movement space of the canopy slide rail is avoided by the recessed part, and the canopy frame 6 is provided with mounting points on both sides, so that the torsional strength of the whole vehicle is significantly improved. In the embodiment of the present application, the middle cross beam structure assembly of the roof is connected to the side enclosure 5 of the vehicle body to form a frame structure after the cavity structure is formed by the upper plate 1 of the roof cross beam and the lower plate 2 of the roof cross beam, providing an installation point in the middle area of ​​the roof for the installation of the canopy frame 6. After the middle cross beam structure assembly of the roof is rigidly connected to the canopy frame 6, a double cavity structure is formed in the longitudinal direction of the roof, which can significantly improve the torsional strength and torsional performance of the whole vehicle. Even if the rear cross beam of the roof is cancelled on some models, the middle cross beam structure assembly of the roof provided in the embodiment of the present application can still enable the roof cross beam structure of the automobile to maintain sufficient strength and rigidity.

[0075] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present application is within the protection scope of the present application.

Claims

1. A top cover middle cross beam structure assembly, characterized in that: include: A top cover cross beam upper plate (1), the top cover cross beam upper plate (1) having a first welding portion (11) extending along its length direction; a top cover cross beam lower plate (2), the top cover cross beam lower plate (2) having a second welding portion (21) extending along its length direction; A first side enclosure connecting member (3), the first side enclosure connecting member (3) being arranged at both ends of the lower plate (2) of the roof crossbeam, and one end of the first side enclosure connecting member (3) being provided with a third welding portion (31); A second side enclosure connecting member (4), the second side enclosure connecting member (4) being arranged below the first side enclosure connecting member (3), and a fourth welding portion (41) being arranged at one end of the second side enclosure connecting member (4); The end surface of the second welding part (21) abuts against the end surface of the third welding part (31), the first welding part (11) is respectively connected to the top of the second welding part (21) and the third welding part (31), and the fourth welding part (41) is respectively connected to the bottom of the second welding part (21) and the third welding part (31).

2. The top cover middle cross beam structure assembly according to claim 1, characterized in that: The first welding parts (11) are provided on both sides of the length direction of the upper plate (1) of the roof cross beam, and the second welding parts (21) are provided on both sides of the length direction of the lower plate (2) of the roof cross beam, the first welding part (11) is connected to the second welding part (21) on the corresponding side, and the upper plate (1) of the roof cross beam and the lower plate (2) of the roof cross beam are enclosed to form a first cavity.

3. The top cover middle cross beam structure assembly according to claim 1, characterized in that: The top cover crossbeam lower plate (2) is provided with a weight-reducing portion (22), and the weight-reducing portion (22) has one or more hollow structures.

4. The top cover middle cross beam structure assembly according to claim 1, characterized in that: The first side enclosure connector (3) has fifth welding portions (32) on both sides in the length direction, and the second side enclosure connector (4) has sixth welding portions (42) on both sides in the length direction, the fifth welding portion (32) is connected to the sixth welding portion (42) on its corresponding side, and the first side enclosure connector (3) and the second side enclosure connector (4) together form a second cavity.

5. The roof middle cross beam structure assembly according to any one of claims 1 to 4, characterized in that: The top cover cross beam upper plate (1) has a first positioning portion (12), and the top cover cross beam lower plate (2) has a second positioning portion (23), and the first positioning portion (12) and the second positioning portion (23) are arranged to match each other; The first side enclosure connecting member (3) has a third positioning portion (33), and the second side enclosure connecting member (4) has a fourth positioning portion (43), and the third positioning portion (33) is matched with the fourth positioning portion (43).

6. A vehicle body, comprising the roof middle cross beam structure assembly according to any one of claims 1 to 5, characterized in that: It also includes a side panel (5) and a canopy frame (6) connected to the crossbeam structure assembly in the top cover, wherein the side panel (5) is respectively connected to the first side panel connecting member (3) and the second side panel connecting member (4), and the second side panel connecting member (4) has a first through hole (44).

7. The vehicle body according to claim 6, characterized in that: The top cover cross beam upper plate (1) has a first frame connection portion (13), and the top cover cross beam lower plate (2) has a second through hole (24) arranged opposite to the first frame connection portion (13); The first side enclosure connecting member (3) has a second frame connecting portion (34), and the second side enclosure connecting member (4) has a third through hole (45) arranged opposite to the second frame connecting portion (34).

8. The vehicle body according to claim 7, characterized in that: The first side enclosure connecting member (3) and the second side enclosure connecting member (4) both have a recessed portion, and the recessed portion has the second skeleton connecting portion (34) or the third through hole (45).

9. The vehicle body according to claim 6, characterized in that: The canopy frame (6) has a third cavity, and the third cavity is located above the top cover crossbeam upper plate (1).

10. An automobile, comprising a vehicle body, characterized in that: The vehicle body is provided with a vehicle body as claimed in any one of claims 6 to 9.

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