Auxiliary frame middle cross beam assembly of vehicle and vehicle

Abstract

The utility model discloses an auxiliary frame middle cross beam assembly of a vehicle and the vehicle, and relates to the field of vehicles. A cavity is defined by a middle cross beam upper plate and a middle cross beam lower plate together; the suspension mounting support comprises a support upper plate, part of the structure of the support upper plate is located in the cavity, the middle cross beam upper plate is provided with a first notch, the first notch is communicated with the cavity, the edge of the first notch is provided with a first flange, the support upper plate comprises a first plate body, and the first plate body is located on the side, close to the middle cross beam lower plate, of the first flange and welded to the first flange. Therefore, part of the structure of the support upper plate is located in the cavity, the first plate body of the support upper plate is welded to the first turned-over edge, the first plate body and the middle cross beam upper plate can be welded in the plane area, the welding quality can be improved, and therefore the structural strength, the anti-fatigue performance and the bearing capacity of the suspension mounting support can be effectively improved; the probability of cracking of the suspension mounting bracket and a welding bead can be reduced, and the use reliability can be improved.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a middle crossbeam assembly of a vehicle subframe and a vehicle. Background Art

[0002] In the related art, a powertrain unit of a vehicle is mounted on a suspension mounting bracket of a middle crossbeam assembly of a subframe through a suspension. The suspension mounting bracket needs to bear a combined load from the road surface and the powertrain at the same time. Therefore, extremely high requirements are imposed on the structural strength and anti-fatigue performance of the suspension mounting bracket. However, the design of the existing middle crossbeam assembly of the subframe is unreasonable, resulting in low structural strength, weak anti-fatigue performance and low load-bearing performance of the suspension mounting bracket, and problems such as cracking of the bracket itself or the weld bead are likely to occur, seriously affecting the use reliability. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a middle crossbeam assembly of a vehicle subframe, which can effectively improve the structural strength, anti-fatigue performance and load-bearing capacity of a suspension mounting bracket.

[0004] The utility model further provides a vehicle.

[0005] The middle crossbeam assembly of the vehicle subframe according to the utility model includes: a middle crossbeam body, the middle crossbeam body includes a middle crossbeam upper plate and a middle crossbeam lower plate, the middle crossbeam upper plate and the middle crossbeam lower plate are connected and jointly define a cavity; a suspension mounting bracket, the suspension mounting bracket includes a bracket upper plate, a part of the structure of the bracket upper plate is located in the cavity, the middle crossbeam upper plate has a first notch, the first notch communicates with the cavity, an edge of the first notch has a first flanging extending towards the inner side of the first notch, the bracket upper plate includes a first plate body, the first plate body is located on a side of the first flanging close to the middle crossbeam lower plate and is welded to the first flanging.

[0006] For the middle crossbeam assembly of the vehicle subframe according to the utility model, by making a part of the structure of the bracket upper plate located in the cavity and welding the first plate body of the bracket upper plate to the first flanging, the first plate body and the middle crossbeam upper plate can be welded in a plane area, which is beneficial to improving the welding quality, thereby effectively improving the structural strength, anti-fatigue performance and load-bearing capacity of the suspension mounting bracket, reducing the probability of cracking of the suspension mounting bracket and the weld bead, and being beneficial to improving the use reliability.

[0007] In some examples of the present utility model, the upper middle crossbeam plate has an avoidance groove, the wall surface of the avoidance groove is an arc surface, and the avoidance groove is welded to the upper bracket plate; the weld bead between the first plate body and the first flanging is the first weld bead, the weld bead between the avoidance groove and the upper bracket plate is the second weld bead, and the first weld bead and the second weld bead are connected.

[0008] In some examples of the present utility model, the upper bracket plate further includes: a second plate body, the second plate body is connected to the first plate body and extends towards the lower middle crossbeam plate; the upper middle crossbeam plate further has a second notch, the second notch is communicated with the cavity and the first notch, and a part of the structure of the second plate body extends out of the cavity through the second notch and is welded to the edge of the second notch.

[0009] In some examples of the present utility model, the suspension mounting bracket further includes: a lower bracket plate, a part of the structure of the lower bracket plate is located in the cavity, the lower middle crossbeam plate has a third notch, the third notch is communicated with the cavity, the edge of the third notch has a second flanging, the lower bracket plate includes a third plate body, and the third plate body is located on one side of the second flanging close to the upper middle crossbeam plate and is welded to the second flanging.

[0010] In some examples of the present utility model, the weld bead between the third plate body and the second flanging is the third weld bead, and the third weld bead is a closed-loop weld bead.

[0011] In some examples of the present utility model, the lower bracket plate further includes: a fourth plate body, the fourth plate body is connected to the third plate body and extends towards the upper middle crossbeam plate and is welded to the second plate body; the lower middle crossbeam plate further has a fourth notch, the fourth notch is communicated with the cavity, and a part of the structure of the fourth plate body extends out of the cavity through the fourth notch and is welded to the edge of the fourth notch.

[0012] In some examples of the present utility model, the weld bead between the fourth plate body and the edge of the fourth notch is the fourth weld bead, a part of the structure of the third plate body extends out of the cavity through the fourth notch and is welded to the edge of the fourth notch, the weld bead between the third plate body and the edge of the fourth notch is the fifth weld bead, and the fifth weld bead is connected to the fourth weld bead.

[0013] In some examples of the present utility model, the weld bead between the second plate body and the edge of the second notch is the sixth weld bead, the sixth weld bead extends along the extending direction of the second plate body, the size of the sixth weld bead is A, and satisfies the relation: 25mm ≤ A ≤ 35mm; and / or, the fourth weld bead extends along the extending direction of the fourth plate body, the size of the fourth weld bead is B, and satisfies the relation: 25mm ≤ B ≤ 35mm.

[0014] In some examples of the present utility model, the middle crossbeam assembly of the subframe of the vehicle further includes: a reinforcing plate, the reinforcing plate is arranged in the cavity and on the side of the avoidance groove away from the suspension mounting bracket, and the reinforcing plate is welded to the middle crossbeam body.

[0015] The vehicle according to the present utility model includes the above-mentioned middle crossbeam assembly of the subframe of the vehicle.

[0016] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0018] Figure 1 is a schematic diagram of the middle crossbeam assembly according to an embodiment of the present utility model;

[0019] Figure 2 is a schematic diagram of the middle crossbeam assembly from another angle according to an embodiment of the present utility model;

[0020] Figure 3 is a schematic diagram of the middle crossbeam assembly from another angle according to an embodiment of the present utility model;

[0021] Figure 4 is a schematic diagram of the middle crossbeam body according to an embodiment of the present utility model;

[0022] Figure 5 is an assembly schematic diagram of the middle crossbeam body and the reinforcing plate according to an embodiment of the present utility model.

[0023] Reference Signs:

[0024] Middle crossbeam assembly 100;

[0025] First weld bead 1; Second weld bead 2; Third weld bead 3; Fourth weld bead 4; Fifth weld bead 5; Sixth weld bead 6;

[0026] Middle crossbeam body 10; Middle crossbeam upper plate 11; First notch 111; Second notch 112; Avoidance groove 113; First flanging 114; Middle crossbeam lower plate 12; Third notch 121; Fourth notch 122; Second flanging 123; Cavity 13;

[0027] Suspension mounting bracket 20; Bracket upper plate 21; First plate body 211; Second plate body 212; Bracket lower plate 22; Third plate body 221; Fourth plate body 222;

[0028] Reinforcing plate 30; Third flanging 31; Fourth flanging 32; Mounting hole 33. Specific embodiments

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0030] The following refers to Figures 1 - 5 Describe the middle crossbeam assembly 100 of the subframe of a vehicle according to an embodiment of the present utility model.

[0031] As Figures 1 - 5 shown, the middle crossbeam assembly 100 according to an embodiment of the present utility model includes: a middle crossbeam body 10 and a suspension mounting bracket 20.

[0032] The middle crossbeam body 10 includes a middle crossbeam upper plate 11 and a middle crossbeam lower plate 12. The middle crossbeam upper plate 11 and the middle crossbeam lower plate 12 are connected and jointly define a cavity 13. The suspension mounting bracket 20 includes a bracket upper plate 21. A part of the structure of the bracket upper plate 21 is located in the cavity 13. The middle crossbeam upper plate 11 has a first notch 111. The first notch 111 communicates with the cavity 13. The edge of the first notch 111 has a first flanging 114 extending towards the inside of the first notch 111. The bracket upper plate 21 includes a first plate body 211. The first plate body 211 is located on the side of the first flanging 114 close to the middle crossbeam lower plate 12 and is welded to the first flanging 114.

[0033] Among them, the middle crossbeam body 10 includes a middle crossbeam upper plate 11 and a middle crossbeam lower plate 12. The middle crossbeam upper plate 11 and the middle crossbeam lower plate 12 are connected. The connection method of the middle crossbeam upper plate 11 and the middle crossbeam lower plate 12 can be, but is not limited to, welding, bolt connection, etc. As some embodiments of the present application, the middle crossbeam upper plate 11 and the middle crossbeam lower plate 12 are connected by welding. The middle crossbeam upper plate 11 and the middle crossbeam lower plate 12 jointly define a cavity 13.

[0034] The suspension mounting bracket 20 includes a bracket upper plate 21. A part of the structure of the bracket upper plate 21 is located in the cavity 13. Along the first direction of the middle crossbeam assembly 100 (i.e., Figure 1 the Z direction shown), the middle crossbeam upper plate 11 has a first notch 111, and moreover, the first notch 111 communicates with the cavity 13. The first notch 111 has a first flanging 114. Specifically, the first flanging 114 is arranged along the edge of the first notch 111, and the first flanging 114 extends towards the inside of the first notch 111.

[0035] As some embodiments of the present application, the first direction (i.e.,Figure 1 The Z direction (as shown) can be the height direction of the vehicle.

[0036] The upper bracket plate 21 includes a first plate body 211. The first flanging 114 has a side close to the lower middle crossbeam plate 12 and a side far from the lower middle crossbeam plate 12. The first plate body 211 is located on the side of the first flanging 114 close to the lower middle crossbeam plate 12, and the first plate body 211 is welded to the first flanging 114. Such a setting enables the upper bracket plate 21 to be welded to the upper middle crossbeam plate 11 in a planar area, can effectively cooperate with the gap between welds, and ensure the welding quality.

[0037] It should be noted that the torque output by the powertrain is transmitted to the left and right wheels. Therefore, the powertrain itself mainly releases the torque around the Y direction of the whole vehicle, and mainly transmits the loads in the X direction and the Z direction to the mounting bracket 20 of the mount. By welding the upper bracket plate 21 and the upper middle crossbeam plate 11 in a planar position, the welding quality between the upper bracket plate 21 and the upper middle crossbeam plate 11 can be effectively guaranteed.

[0038] Thus, by making part of the structure of the upper bracket plate 21 located in the cavity 13 and welding the first plate body 211 of the upper bracket plate 21 to the first flanging 114, the first plate body 211 can be welded to the upper middle crossbeam plate 11 in a planar area, which is beneficial to improving the welding quality, and thus can effectively improve the structural strength, anti-fatigue performance and load-bearing capacity of the mounting bracket 20 of the mount, can reduce the probability of cracking of the mounting bracket 20 of the mount and the weld bead, and is beneficial to improving the use reliability.

[0039] In some embodiments of the present invention, as Figure 1 and Figure 4 shown, the upper middle crossbeam plate 11 has an avoidance groove 113. The wall surface of the avoidance groove 113 is an arc surface, and the avoidance groove 113 is welded to the upper bracket plate 21; the weld bead between the first plate body 211 and the first flanging 114 is the first weld bead 1, and the weld bead between the avoidance groove 113 and the upper bracket plate 21 is the second weld bead 2, and the first weld bead 1 and the second weld bead 2 are connected.

[0040] Among them, the upper middle crossbeam plate 11 has an avoidance groove 113. The avoidance groove 113 is recessed towards the cavity 13. The wall surface of the avoidance groove 113 is an arc surface. The avoidance groove 113 is used to avoid the powertrain of the vehicle. The avoidance groove 113 is connected to the upper bracket plate 21 by welding. The weld bead between the first plate body 211 and the first flanging 114 is the first weld bead 1, and the weld bead between the avoidance groove 113 and the upper bracket plate 21 is the second weld bead 2, and the first weld bead 1 and the second weld bead 2 are connected and arranged.

[0041] It should be noted that by making the wall surface of the avoidance groove 113 an arc surface, such a setting can extend the welding length between the upper plate 21 of the bracket and the upper plate 11 of the middle cross beam, and make the weld bead transition along the gentle avoidance groove 113, which is beneficial to improving the welding quality of the first weld bead 1 and the second weld bead 2, and thus can reduce the probability of cracking at the welding joint between the suspension mounting bracket 20 and the middle cross beam body 10.

[0042] In some embodiments of the present invention, as Figure 1 and Figure 3 shown, the upper plate 21 of the bracket further includes: a second plate body 212, the second plate body 212 is connected to the first plate body 211 and extends towards the lower plate 12 of the middle cross beam; the upper plate 11 of the middle cross beam further has a second notch 112, the second notch 112 is communicated with the cavity 13 and the first notch 111, and a part of the structure of the second plate body 212 extends out of the cavity 13 through the second notch 112 and is welded to the edge of the second notch 112.

[0043] Among them, the upper plate 21 of the bracket further includes a second plate body 212, the second plate body 212 is connected to the first plate body 211, and the connection method between the second plate body 212 and the first plate body 211 can be, but is not limited to, welding, bolt connection, etc. As some embodiments of the present application, the connection method between the second plate body 212 and the first plate body 211 is a welded connection. As some embodiments of the present application, the second plate body 212 and the first plate body 211 are integrally formed.

[0044] Along the first direction of the middle cross beam assembly 100 (i.e., Figure 1 the Z direction shown), the second plate body 212 extends towards the lower plate 12 of the middle cross beam. Along the second direction of the middle cross beam assembly 100 (i.e., Figure 1 the X direction shown), the upper plate 11 of the middle cross beam has a second notch 112, the second notch 112 is communicated with the cavity 13, the second notch 112 is communicated with the first notch 111, a part of the structure of the second plate body 212 is located in the cavity 13, another part of the structure of the second plate body 212 extends out of the cavity 13 through the second notch 112, and another part of the structure of the second plate body 212 is connected to the edge of the second notch 112 by welding.

[0045] As some embodiments of the present application, the second direction (i.e., Figure 1 the X direction shown) can be the length direction of the vehicle.

[0046] By making a part of the structure of the second plate body 212 extend out of the cavity 13 through the second notch 112 and be welded to the edge of the second notch 112, the welding position between the upper plate 21 of the bracket and the upper plate 11 of the middle cross beam can be increased, the connection strength between the upper plate 21 of the bracket and the upper plate 11 of the middle cross beam can be improved, and further the connection strength between the middle cross beam body 10 and the suspension mounting bracket 20 can be effectively improved, and the structural strength of the middle cross beam assembly 100 can be improved.

[0047] In some embodiments of the present utility model, as Figures 1 - 5 shown, the suspension mounting bracket 20 further includes: a bracket lower plate 22, a part of the structure of the bracket lower plate 22 is located in the cavity 13, the middle crossbeam lower plate 12 has a third notch 121, the third notch 121 communicates with the cavity 13, the edge of the third notch 121 has a second flanging 123, the bracket lower plate 22 includes a third plate body 221, and the third plate body 221 is located on the side of the second flanging 123 close to the middle crossbeam upper plate 11 and is welded to the second flanging 123.

[0048] Among them, the suspension mounting bracket 20 further includes a bracket lower plate 22, a part of the structure of the bracket lower plate 22 is located in the cavity 13, along the first direction of the middle crossbeam assembly 100 (i.e., Figure 1 the Z direction shown), the middle crossbeam lower plate 12 has a third notch 121, and moreover, the third notch 121 is communicated with the cavity 13, the third notch 121 has a second flanging 123, specifically, the second flanging 123 is arranged along the edge of the third notch 121, and the second flanging 123 extends towards the inner side of the third notch 121.

[0049] The bracket lower plate 22 includes a third plate body 221, the second flanging 123 has a side close to the middle crossbeam upper plate 11 and a side far from the middle crossbeam upper plate 11, the third plate body 221 is located on the side of the second flanging 123 close to the middle crossbeam upper plate 11, and moreover, the third plate body 221 is welded and connected to the second flanging 123. Such a setting can enable the bracket lower plate 22 and the middle crossbeam lower plate 12 to be welded in a planar area, can effectively cooperate with the gap between welds, and ensure the welding quality.

[0050] By making a part of the structure of the bracket lower plate 22 located in the cavity 13 and welding and connecting the third plate body 221 of the bracket lower plate 22 to the second flanging 123, the third plate body 221 and the middle crossbeam lower plate 12 can be welded in a planar area, which is beneficial to improving the welding quality, thereby effectively improving the structural strength, anti-fatigue performance and load-bearing capacity of the suspension mounting bracket 20, reducing the probability of cracking of the suspension mounting bracket 20 and the weld bead, and being beneficial to improving the use reliability.

[0051] In some embodiments of the present utility model, as Figure 2 and Figure 3 shown, the weld bead between the third plate body 221 and the second flanging 123 is the third weld bead 3, and the third weld bead 3 is a closed-loop weld bead.

[0052] Among them, the weld bead between the third plate body 221 and the second flanging 123 is the third weld bead 3, and the third weld bead 3 is a closed-loop weld bead. That is to say, when welding the third plate body 221 and the second flanging 123, along the connection between the third plate body 221 and the second flanging 123, the third weld bead 3 is welded end to end to tightly envelope the third plate body 221.

[0053] By making the third weld bead 3 a closed-loop weld bead, the probability of cracking of the third weld bead 3 can be reduced, and the connection strength between the middle crossbeam body 10 and the suspension mounting bracket 20 can be improved.

[0054] In some embodiments of the present utility model, as Figure 1 , Figure 3 and Figure 4 shown, the lower bracket plate 22 further includes: a fourth plate body 222, the fourth plate body 222 is connected to the third plate body 221 and extends towards the upper middle crossbeam plate 11 and is welded to the second plate body 212; the lower middle crossbeam plate 12 further has a fourth notch 122, the fourth notch 122 communicates with the cavity 13, and a part of the structure of the fourth plate body 222 extends out of the cavity 13 through the fourth notch 122 and is welded to the edge of the fourth notch 122.

[0055] Among them, the lower bracket plate 22 further includes a fourth plate body 222, the fourth plate body 222 is connected to the third plate body 221, and the connection method between the fourth plate body 222 and the third plate body 221 can be but is not limited to welding, bolt connection, etc. As some embodiments of the present application, the connection method between the fourth plate body 222 and the third plate body 221 is a welded connection. As some embodiments of the present application, the fourth plate body 222 and the third plate body 221 are integrally formed.

[0056] Along the first direction of the middle crossbeam assembly 100 (i.e., Figure 1 the Z direction shown), the fourth plate body 222 extends towards the upper middle crossbeam plate 11. Along the second direction of the middle crossbeam assembly 100 (i.e., Figure 1 the X direction shown), the lower middle crossbeam plate 12 has a fourth notch 122, the fourth notch 122 communicates with the cavity 13, a part of the structure of the fourth plate body 222 is located in the cavity 13, another part of the structure of the fourth plate body 222 extends out of the cavity 13 through the fourth notch 122, and another part of the structure of the fourth plate body 222 is connected to the edge of the second notch 112 by welding.

[0057] By making a part of the structure of the fourth plate body 222 extend out of the cavity 13 through the fourth notch 122 and be welded to the edge of the fourth notch 122, the welding position between the lower bracket plate 22 and the lower middle crossbeam plate 12 can be increased, the connection strength between the lower bracket plate 22 and the lower middle crossbeam plate 12 can be improved, and further the connection strength between the middle crossbeam body 10 and the suspension mounting bracket 20 can be effectively improved, and the structural strength of the middle crossbeam assembly 100 can be improved.

[0058] In some embodiments of the present utility model, as Figure 3 shown, the weld bead between the fourth plate body 222 and the edge of the fourth notch 122 is the fourth weld bead 4. A part of the structure of the third plate body 221 extends out of the cavity 13 through the fourth notch 122 and is welded to the edge of the fourth notch 122. The weld bead between the third plate body 221 and the edge of the fourth notch 122 is the fifth weld bead 5, and the fifth weld bead 5 is connected to the fourth weld bead 4.

[0059] Among them, the weld bead between the fourth plate body 222 and the edge of the fourth notch 122 is the fourth weld bead 4. One part of the structure of the third plate body 221 is located in the cavity 13, and the other part of the structure of the third plate body 221 extends out of the cavity 13 through the fourth notch 122. Moreover, the other part of the structure of the third plate body 221 is welded to the edge of the fourth notch 122. The weld bead between the third plate body 221 and the edge of the fourth notch 122 is the fifth weld bead 5, and the fifth weld bead 5 is connected to the fourth weld bead 4, that is to say, the fifth weld bead 5 is connected to the fourth weld bead 4 to weld the lower bracket plate 22 and the lower middle cross beam plate 12 along the edge of the fourth notch 122.

[0060] As some embodiments of the present application, both the fifth weld bead 5 and the fourth weld bead 4 are welded by means of integral welding.

[0061] By making a part of the structure of the third plate body 221 extend out of the cavity 13 through the fourth notch 122 and be welded to the edge of the fourth notch 122, and connecting the fifth weld bead 5 and the fourth weld bead 4, the welding frequency can be reduced, the production efficiency can be improved, and moreover, the probability of the fifth weld bead 5 and the fourth weld bead 4 breaking at the corner position can be reduced, which is beneficial to improving the connection strength between the fifth weld bead 5 and the fourth weld bead 4 and is beneficial to reducing the probability of the fifth weld bead 5 and the fourth weld bead 4 cracking.

[0062] In some embodiments of the present utility model, as Figure 3 shown, the weld bead between the second plate body 212 and the edge of the second notch 112 is the sixth weld bead 6. The sixth weld bead 6 extends along the extension direction of the second plate body 212. The size of the sixth weld bead 6 is A, satisfying the relationship: 25 mm ≤ A ≤ 35 mm; and / or, the fourth weld bead 4 extends along the extension direction of the fourth plate body 222. The size of the fourth weld bead 4 is B, satisfying the relationship: 25 mm ≤ B ≤ 35 mm.

[0063] Among them, the weld bead between the second plate body 212 and the edge of the second notch 112 is the sixth weld bead 6, along the first direction of the middle cross beam assembly 100 (i.e. Figure 1In the Z direction (as shown), the sixth weld bead 6 extends along the extension direction of the second plate body 212. The size of the sixth weld bead 6 is A, and A can satisfy the relational expression 25mm ≤ A ≤ 35mm, that is, the size A of the sixth weld bead 6 can be any value between 25mm and 35mm. The size A of the sixth weld bead 6 can be, but is not limited to, 25mm, 30mm, 35mm, etc. As some embodiments of the present application, the size A of the sixth weld bead 6 is 30mm.

[0064] By enabling the size A of the sixth weld bead 6 to be any value between 25mm and 35mm, the size of the sixth weld bead 6 can be made reasonable. On the premise of meeting the vehicle's space layout, the Z-direction load-bearing of the middle crossbeam assembly 100 can be improved, which is beneficial to improving the use reliability of the middle crossbeam assembly 100.

[0065] Along the first direction of the middle crossbeam assembly 100 (i.e., Figure 1 the Z direction as shown), the fourth weld bead 4 extends along the extension direction of the fourth plate body 222. The size of the fourth weld bead 4 is B, and B can satisfy the relational expression 25mm ≤ B ≤ 35mm, that is, the size B of the fourth weld bead 4 can be any value between 25mm and 35mm. The size B of the fourth weld bead 4 can be, but is not limited to, 25mm, 30mm, 35mm, etc. As some embodiments of the present application, the size B of the fourth weld bead 4 is 30mm.

[0066] By enabling the size B of the fourth weld bead 4 to be any value between 25mm and 35mm, the size of the fourth weld bead 4 can be made reasonable. On the premise of meeting the vehicle's space layout, the Z-direction load-bearing of the middle crossbeam assembly 100 can be improved, which is beneficial to improving the use reliability of the middle crossbeam assembly 100.

[0067] As some embodiments of the present application, along the third direction of the middle crossbeam assembly 100 (i.e., Figure 1 the Y direction as shown), two fourth weld beads 4 are opposite and spaced apart, and both two fourth weld beads 4 are connected to both ends of the fifth weld bead 5. As some embodiments of the present application, along the third direction of the middle crossbeam assembly 100 (i.e., Figure 1 the Y direction as shown), two sixth weld beads 6 are opposite and spaced apart. Such a setting can reduce the probability that the weld bead connection strength is insufficient due to the short welding length at a certain position on the side of the suspension mounting bracket 20, and improve the connection strength between the suspension mounting bracket 20 and the middle crossbeam assembly 10.

[0068] As some embodiments of the present application, the third direction (i.e., Figure 1 the Y direction as shown) can be the width direction of the vehicle, and moreover, the first direction (i.e., Figure 1 the Z direction as shown), the second direction (i.e., Figure 1 the X direction as shown), the third direction (i.e., Figure 1are perpendicular to each other in the Y direction shown.

[0069] In some embodiments of the present utility model, such as Figure 4 and Figure 5 shown, the middle crossbeam assembly 100 of the vehicle further includes: a reinforcing plate 30, the reinforcing plate 30 is arranged in the cavity 13 and is located on the side of the avoidance groove 113 away from the suspension mounting bracket 20, and the reinforcing plate 30 is welded to the middle crossbeam body 10.

[0070] Among them, the middle crossbeam assembly 100 further includes a reinforcing plate 30, the reinforcing plate 30 is arranged in the cavity 13, the avoidance groove 113 has a side away from the suspension mounting bracket 20 and a side close to the suspension mounting bracket 20, the reinforcing plate 30 is located on the side of the avoidance groove 113 away from the suspension mounting bracket 20, and the reinforcing plate 30 is connected to the middle crossbeam body 10 by welding.

[0071] Specifically, along the first direction of the middle crossbeam assembly 100 (i.e., Figure 1 the Z direction shown), the upper edge of the reinforcing plate 30 is connected to the middle crossbeam upper plate 11 by integral welding, and such a setting can reduce the influence of the structural change at the position of the middle crossbeam upper plate 11 on the welding quality.

[0072] The reinforcing plate 30 has a third flanging 31 and a fourth flanging 32, and the middle crossbeam lower plate 12 has mounting holes 33 corresponding to the third flanging 31 and the fourth flanging 32, and the third flanging 31 and the fourth flanging 32 can be welded to the middle crossbeam lower plate 12 by plug welding. Such a setting can enable the reinforcing plate 30 to be welded to the middle crossbeam upper plate 11 and the middle crossbeam lower plate 12 respectively, which is beneficial to improving the structural strength of the middle crossbeam body 10 and can improve the strength and fatigue durability performance of the middle crossbeam assembly 100.

[0073] By arranging the reinforcing plate 30 in the cavity 13 and on the side of the avoidance groove 113 away from the suspension mounting bracket 20, and welding the reinforcing plate 30 to the middle crossbeam body 10, the weld bead of the suspension mounting bracket 20 can be protected, the stiffness of the middle crossbeam assembly 100 at the position near the reinforcing plate 30 can be effectively improved, and the reinforcing plate 30 can share the load from the control arm side.

[0074] It should be noted that through the middle crossbeam assembly 100 of the present application, the middle crossbeam body 10 and the suspension mounting bracket 20 can be effectively connected, the probability of weld cracking of the middle crossbeam assembly 100 during use can be reduced, the structural strength of the middle crossbeam assembly 100 can be improved, which is beneficial to improving the stability and safety of the vehicle.

[0075] A vehicle according to an embodiment of the present utility model includes the middle crossbeam assembly 100 of the vehicle in the above embodiment. By making a part of the structure of the upper bracket plate 21 located in the cavity 13 and welding the first plate body 211 of the upper bracket plate 21 to the first flanging 114, the first plate body 211 can be welded to the upper middle crossbeam 11 in a planar area, which is beneficial to improving the welding quality. Thus, the structural strength, anti-fatigue performance, and load-bearing capacity of the mounting bracket 20 can be effectively improved, the probability of cracking of the mounting bracket 20 and the weld bead can be reduced, and the use reliability can be improved.

[0076] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0077] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features.

[0078] In the description of the present utility model, the meaning of "a plurality" is two or more.

[0079] In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0080] In the description of the present utility model, the first feature being "above", "above the top", and "on the top" of the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0081] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0082] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A cross beam assembly (100) for a vehicle subframe, characterized in that: include: A middle cross beam body (10), the middle cross beam body (10) comprising a middle cross beam upper plate (11) and a middle cross beam lower plate (12), the middle cross beam upper plate (11) and the middle cross beam lower plate (12) being connected and jointly defining a cavity (13); A suspension mounting bracket (20), the suspension mounting bracket (20) comprising a bracket upper plate (21), a part of the structure of the bracket upper plate (21) being located in the cavity (13), the middle cross beam upper plate (11) having a first notch (111), the first notch (111) being connected to the cavity (13), the edge of the first notch (111) having a first flange (114) extending toward the inner side of the first notch (111), the bracket upper plate (21) comprising a first plate body (211), the first plate body (211) being located on a side of the first flange (114) close to the middle cross beam lower plate (12) and being welded to the first flange (114).

2. The cross beam assembly (100) of the vehicle subframe according to claim 1, characterized in that: The middle cross beam upper plate (11) has an avoidance groove (113), the wall surface of the avoidance groove (113) is an arc surface, and the avoidance groove (113) is welded to the bracket upper plate (21); The weld bead between the first plate body (211) and the first flange (114) is a first weld bead (1), the weld bead between the avoidance groove (113) and the bracket upper plate (21) is a second weld bead (2), and the first weld bead (1) and the second weld bead (2) are connected.

3. The vehicle subframe middle cross beam assembly (100) according to claim 1, characterized in that: The bracket upper plate (21) further comprises: a second plate body (212), the second plate body (212) being connected to the first plate body (211) and extending toward the middle cross beam lower plate (12); The middle cross beam upper plate (11) further has a second notch (112), the second notch (112) being in communication with the cavity (13) and the first notch (111), and a portion of the structure of the second plate body (212) protrudes out of the cavity (13) through the second notch (112) and is welded to the edge of the second notch (112).

4. The cross beam assembly (100) of the vehicle subframe according to claim 3, characterized in that: The suspension mounting bracket (20) further includes: a bracket lower plate (22), a part of the structure of the bracket lower plate (22) is located in the cavity (13), the middle cross beam lower plate (12) has a third notch (121), the third notch (121) is connected to the cavity (13), the edge of the third notch (121) has a second flange (123), the bracket lower plate (22) includes a third plate body (221), the third plate body (221) is located on a side of the second flange (123) close to the middle cross beam upper plate (11) and is welded to the second flange (123).

5. The vehicle subframe middle cross beam assembly (100) according to claim 4, characterized in that: The weld bead between the third plate body (221) and the second flange (123) is a third weld bead (3), and the third weld bead (3) is a closed-loop weld bead.

6. The vehicle subframe mid-beam assembly (100) according to claim 4, characterized in that: The bracket lower plate (22) further comprises: a fourth plate body (222), the fourth plate body (222) being connected to the third plate body (221) and extending toward the middle cross beam upper plate (11) and being welded to the second plate body (212); The lower plate (12) of the middle cross beam also has a fourth notch (122), the fourth notch (122) is connected to the cavity (13), and a part of the structure of the fourth plate body (222) extends out of the cavity (13) through the fourth notch (122) and is welded to the edge of the fourth notch (122).

7. The vehicle subframe middle cross beam assembly (100) according to claim 6, characterized in that: The weld bead between the fourth plate body (222) and the edge of the fourth notch (122) is a fourth weld bead (4); a partial structure of the third plate body (221) extends out of the cavity (13) through the fourth notch (122) and is welded to the edge of the fourth notch (122); the weld bead between the third plate body (221) and the edge of the fourth notch (122) is a fifth weld bead (5); and the fifth weld bead (5) is connected to the fourth weld bead (4).

8. The vehicle subframe mid-beam assembly (100) according to claim 7, characterized in that: The weld bead between the second plate body (212) and the edge of the second notch (112) is a sixth weld bead (6), the sixth weld bead (6) extends along the extension direction of the second plate body (212), the size of the sixth weld bead (6) is A, and satisfies the relationship: 25 mm ≤ A ≤ 35 mm; And / or, the fourth weld bead (4) extends along the extension direction of the fourth plate body (222), and the size of the fourth weld bead (4) is B, satisfying the relationship: 25mm≤B≤35mm.

9. The vehicle subframe mid-beam assembly (100) according to claim 2, characterized in that: Also includes: A reinforcing plate (30), wherein the reinforcing plate (30) is disposed in the cavity (13) and is located on a side of the avoidance groove (113) away from the suspension mounting bracket (20), and the reinforcing plate (30) is welded to the middle cross beam body (10).

10. A vehicle, characterized in that: A cross member assembly (100) for a vehicle subframe comprising the cross member assembly (100) according to any one of claims 1 to 9.

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