Subframe crossmember and vehicle

Abstract

The application provides a subframe crossbeam and a vehicle, and the subframe crossbeam comprises a crossbeam upper plate and a crossbeam lower plate which are connected together through buckling, and a suspension mounting seat is arranged in the middle of the subframe crossbeam along the left-right direction of the whole vehicle; the bottom of the suspension mounting seat is connected to the crossbeam lower plate, and the side of the suspension mounting seat is connected to the crossbeam upper plate. The subframe crossbeam can increase the structural strength of the suspension mounting seat position in the subframe, reduce the vibration transmission sensitivity of the subframe, and is beneficial to improving the driving experience of the vehicle and improving the durability of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a subframe cross beam. BACKGROUND

[0002] With the development of technology, and the continuous improvement of people's consumption level, people's requirements for vehicle driving quality are continuously improved, and vehicle noise and vibration performance has become the focus of competition of various vehicle enterprises. In the vehicle, the power assembly is generally installed on the subframe through suspension, and the vibration generated by the power assembly will be transmitted to the vehicle body through the subframe mounting point, thereby causing the whole vehicle vibration and noise problem. Therefore, how to increase the structural strength of the power assembly mounting point position on the subframe to reduce the vibration and noise transmitted to the vehicle body is crucial to the improvement of vehicle driving experience. SUMMARY

[0003] Therefore, the present application aims to provide a subframe cross beam to increase the structural strength of the power assembly mounting point position on the subframe, which helps to improve the driving experience of the vehicle.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] A subframe cross beam, comprising a cross beam upper plate and a cross beam lower plate connected together by buckling, and a suspension mounting seat is arranged in the middle of the subframe cross beam along the left-right direction of the whole vehicle.

[0006] The bottom of the suspension mounting seat is connected to the cross beam lower plate, and the side of the suspension mounting seat is connected to the cross beam upper plate.

[0007] Further, the part of the cross beam upper plate on the left side of the suspension mounting seat has a rear side part and a front side part, and along the front-rear direction of the whole vehicle, the front side part is located in front of the rear side part.

[0008] In the up-down direction of the whole vehicle, the top of the rear side part is higher than that of the front side part.

[0009] Further, the front side part has a first front side face facing the head direction, the first front side face is in an arch shape arching backward along the front-rear direction of the whole vehicle, and the bottom edge of the first front side face is connected to the top surface of the cross beam lower plate; and / or,

[0010] The rear side part has a second front side face facing the head direction and a rear side face facing the tail direction; the second front side face is a plane arranged along the left-right direction of the whole vehicle, and the rear side face is in an arch shape arching forward along the front-rear direction of the whole vehicle.

[0011] Further, the auxiliary frame cross beam has a closed cavity on the right side of the suspension mounting seat, which is formed by the cross beam upper plate, the cross beam lower plate, the suspension mounting seat and an auxiliary frame longitudinal beam connected with the right end of the auxiliary frame cross beam.

[0012] Further, the side of the auxiliary frame cross beam towards the front direction of the vehicle is provided with a first arc structure, and the side of the auxiliary frame cross beam towards the rear direction of the vehicle is provided with a second arc structure.

[0013] The first arc structure and the second arc structure are both located on the right side of the suspension mounting seat, the first arc structure arches out in the rear direction of the vehicle, and the second arc structure arches out in the front direction of the vehicle.

[0014] Further, the auxiliary frame cross beam has a closed cavity on the right side of the suspension mounting seat, which is formed by the cross beam upper plate, the cross beam lower plate, the suspension mounting seat and an auxiliary frame longitudinal beam connected with the right end of the auxiliary frame cross beam.

[0015] In the front-to-rear direction of the vehicle, the front end of the suspension mounting seat extends out of the auxiliary frame cross beam, and the rear end of the suspension mounting seat extends into the arching part.

[0016] Further, the suspension mounting seat and the cross beam lower plate form a mounting seat cavity.

[0017] In the front-to-rear direction of the vehicle, the front end of the suspension mounting seat extends out of the auxiliary frame cross beam, and the rear end of the suspension mounting seat extends into the arching part.

[0018] Further, the suspension mounting seat and the cross beam lower plate form a mounting seat cavity.

[0019] The suspension mounting seat is provided with a triangular recessed platform on both sides of the opening.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] The subframe cross beam of the present application is composed of the upper cross beam plate and the lower cross beam plate connected by buckling, and the bottom of the suspension mounting seat is connected with the lower cross beam plate, and the side is connected with the upper cross beam plate, so that not only the buckling connection structure of the upper and lower cross beam plates can be used to increase the structural strength of the subframe cross beam itself, but also the connection between the side and the bottom of the suspension mounting seat and the upper and lower cross beam plates can be used to increase the connection strength between the suspension mounting seat and the subframe cross beam, so that the present application can increase the structural strength of the subframe and the power assembly mounting position thereon, reduce the sensitivity of vibration transmission of the power assembly, reduce the vibration noise transmitted to the vehicle body, and improve the driving experience of the vehicle.

[0022] In addition, the part of the upper cross beam plate on the left side of the suspension mounting seat is provided with a rear side part and a front side part with different heights, and the stepped structure formed by the front side part and the rear side part can be used to increase the structural strength of the left end position of the upper cross beam plate, which is also beneficial to the improvement of the structural strength of the cross beam in the subframe.

[0023] The first front side surface at the front side part is an arch shape arched backward, and the bottom edge of the first front side surface is connected to the top surface of the lower cross beam plate, which not only can use the characteristics of high structural strength of the arch shape to increase the structural strength of the front side part of the upper cross beam plate, but also can increase the connection length between the front side part and the lower cross beam plate to improve the connection strength between the upper and lower cross beam plates.

[0024] Secondly, the second front side surface at the rear side part is a plane, which is beneficial to the molding of the left end part of the upper cross beam plate with the rear side part and the front side part, and the rear side surface at the rear side part is an arch shape arched forward, which on the one hand can use the characteristics of high structural strength of the arch shape to increase the structural strength of the rear side part, and on the other hand can cooperate with the arch design of the first front side surface at the front side part, so that the left end part of the upper cross beam plate as a whole presents a funnel-shaped structure with double arches, which can better improve the structural strength of the upper cross beam plate and the subframe cross beam as a whole.

[0025] The part of the subframe cross beam on the right side of the suspension mounting seat forms a closed cavity, which can use the characteristics of high structural strength of the cavity to increase the structural strength of the right end part of the subframe cross beam. The front and rear sides of the right end part of the subframe cross beam are respectively provided with a first arch structure and a second arch structure, which also can use the double arch structure to better improve the structural strength of the right end part of the subframe cross beam. The distance between the arch top of the first arch structure and the right side subframe longitudinal beam is less than the distance between the arch top of the second arch structure and the right side subframe longitudinal beam, which can realize the frequency avoidance design of the front and rear sides of the subframe cross beam, which is beneficial to avoiding resonance and reducing the vibration response sensitivity of the subframe cross beam.

[0026] In addition, the middle part of the sub-frame cross beam is provided with an arch part which arches backward, and the front end of the suspension mounting seat extends out of the sub-frame cross beam, and the rear end extends into the arch part, so that the arch structure of the arch part can increase the structural strength of the middle part of the sub-frame cross beam, and the size of the suspension mounting seat can be increased, and the connecting area and the connecting strength between the suspension mounting seat and the sub-frame cross beam can be increased, which is helpful to improve the dynamic stiffness of the sub-frame and the power assembly mounting position thereof. The suspension mounting seat and the lower plate of the cross beam form a mounting cavity, and the top of the suspension mounting seat arches upward, and the rear end arches backward, so that the cavity structure and the arch structure with high strength can be used to increase the structural strength of the power assembly mounting position.

[0027] The front end of the suspension mounting seat is provided with an opening, which is conducive to the weight reduction design of the suspension mounting seat and the whole sub-frame, and the triangular pit platforms are arranged on the suspension mounting seat on the left and right sides of the opening, so that the structural strength of the suspension mounting seat at the position of the opening can be ensured while the opening is arranged.

[0028] Another object of the present application is to provide a vehicle which is provided with a sub-frame.

[0029] The sub-frame has a sub-frame middle cross beam which is connected between the left and right sub-frame longitudinal beams, and the sub-frame middle cross beam adopts the sub-frame cross beam as described above.

[0030] Further, the sub-frame has a sub-frame rear cross beam which is connected between the left and right sub-frame longitudinal beams, and the sub-frame middle cross beam, the sub-frame rear cross beam, and the left and right sub-frame longitudinal beams are connected with a reinforcing plate in the enclosed area.

[0031] The reinforcing plate is curved in an "S" shape in the front-rear direction of the whole vehicle, and / or the reinforcing plate is provided with elliptical protrusions which are arranged in the front-rear direction of the whole vehicle, and the protrusions are arranged in multiple in the left-right direction of the whole vehicle.

[0032] The vehicle of the present application adopts the sub-frame middle cross beam which adopts the sub-frame cross beam as described above, so that the structural strength of the sub-frame and the power assembly mounting position thereof can be increased, the sensitivity of vibration transmission of the power assembly can be reduced, the vibration noise transmitted to the vehicle body can be reduced, and the driving experience of the vehicle can be improved.

[0033] In addition, the reinforcing plate which is curved in an "S" shape is arranged in the area enclosed by the sub-frame middle cross beam, the sub-frame rear cross beam, and the left and right sub-frame longitudinal beams, so that the structural strength of the power assembly mounting position of the sub-frame can be further improved by the reinforcing plate. The elliptical protrusions arranged on the reinforcing plate can increase the strength of the reinforcing plate and improve the structural reinforcing effect of the reinforcing plate. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate embodiments of the application and assist in

[0035] Figure 1 Structure diagram of the sub-frame cross beam according to the embodiment of the application;

[0036] Figure 2 Structure diagram of the sub-frame cross beam according to the embodiment of the application; Figure 1 Structure diagram of the sub-frame cross beam according to the embodiment of the application;

[0037] Figure 3 Structure diagram of the sub-frame cross beam according to the embodiment of the application;

[0038] Figure 4 Structure diagram of the sub-frame cross beam according to the embodiment of the application;

[0039] Figure 5 Structure diagram of the sub-frame cross beam according to the embodiment of the application;

[0040] Figure 6 Structure diagram of the sub-frame cross beam according to the embodiment of the application;

[0041] Figure 7 Structure diagram of the sub-frame cross beam according to the embodiment of the application; Figure 6 Structure diagram of the sub-frame cross beam according to the embodiment of the application;

[0042] Figure 8 Structure diagram of the sub-frame cross beam according to the embodiment of the application;

[0043] Legend of the drawings:

[0044] 1, sub-frame longitudinal beam; 2, sub-frame front cross beam; 3, sub-frame middle cross beam; 4, sub-frame rear cross beam; 5, suspension mounting seat; 6, reinforcing plate; 7, body connecting arm; 8, control arm mounting bracket;

[0045] 301, upper beam plate; 301a, notch; 3011, rear part; 3011a, second front side; 3011b, rear side; 3012, front part; 3012a, first front side; 302, lower beam plate; 3021, pit; 3022, rear side flange; 3023, front side flange; 302a, top surface; 3a, first arch structure; 3b, second arch structure; 3c, arch part; 501, recessed platform; 601, protrusion;

[0046] Q, closed cavity; S, mounting seat cavity; T, opening; m, first arch structure arch top position; n, second arch structure arch top position; k, width of the lower beam plate along the front-rear direction of the vehicle. DETAILED DESCRIPTION

[0047] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0048] In the description of the present application, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer" and the like appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, if terms such as "first", "second" and the like appear, they are also only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0049] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connection", "connection", "connector" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in conjunction with the specific circumstances.

[0050] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0051] Embodiment one

[0052] This embodiment relates to a subframe cross beam, in terms of overall structure, in combination with Figures 1 to 5 The subframe cross beam includes a cross beam upper plate 301 and a cross beam lower plate 302 connected together by snap fit, and a suspension mounting seat 5 is provided in the middle of the subframe cross beam in the left-right direction of the whole vehicle. The bottom of the suspension mounting seat 5 is connected to the cross beam lower plate 302, and the side of the suspension mounting seat 5 is connected to the cross beam upper plate 301.

[0053] At this time, by making the subframe cross beam consist of the cross beam upper plate 301 and the cross beam lower plate 302 connected together by snap fit, and making the bottom of the suspension mounting seat 5 connected to the cross beam lower plate 302 and the side connected to the cross beam upper plate 301, this embodiment can increase the structural strength of the subframe cross beam 3 itself by using the snap fit structure of the cross beam upper plate and the cross beam lower plate, and can increase the connection strength between the suspension mounting seat 5 and the subframe cross beam by using the connection between the side and the bottom of the suspension mounting seat 5 and the cross beam upper plate and the cross beam lower plate, respectively. Therefore, this embodiment can achieve the effect of increasing the structural strength of the subframe in which the subframe cross beam is arranged, and the mounting position of the power assembly thereon, reducing the sensitivity of vibration transmission of the power assembly, and reducing the vibration noise transmitted to the vehicle body.

[0054] Based on the above overall introduction, in detail, in combination with the embodiments shown in Figure 6 and 7 , preferably, the sub-frame cross beam of the present embodiment can be the sub-frame middle cross beam 3 in the sub-frame, and the present embodiment will also be specifically described by taking the sub-frame middle cross beam 3 as an example. At the same time, in specific implementation, the sub-frame of the present embodiment may, for example, also be a front sub-frame located at the front part of the vehicle body, and at this time, the vehicle applying the sub-frame is a vehicle model with the power assembly at the front.

[0055] Of course, in addition to being the front sub-frame, when the power assembly of the vehicle is at the rear, the sub-frame of the present embodiment may also be a rear sub-frame located at the rear part of the vehicle body. And it should be noted that in addition to being the sub-frame middle cross beam 3 in the sub-frame, in specific implementation, of course, according to the installation and arrangement needs of the sub-frame and the power assembly thereon, the sub-frame cross beam of the present embodiment may also be other cross beam structures in the sub-frame, for example, still taking the embodiments shown in Figure 6 and Figure 7 as an example, the sub-frame cross beam of the present embodiment may be the sub-frame front cross beam 2 or the sub-frame rear cross beam 4. When the sub-frame cross beam of the present embodiment is the sub-frame front cross beam 2 or the sub-frame rear cross beam 4, it is worth noting that based on the different positions in the sub-frame, the modeling, size, etc. of the sub-frame cross beam can be adaptively adjusted.

[0056] In the present embodiment, still as shown in Figures 1 to 4 , as a preferred implementation form, an oval-shaped pit 3021 is arranged on the cross beam lower plate 302, the pit 3021 is located at the left side of the suspension mounting seat 5, and the length direction of the pit 3021, that is, the long axis direction of the oval-shaped pit 3021 is arranged along the left-right direction of the whole vehicle.

[0057] At this time, by arranging the pit 3021 in an oval shape and along the left-right direction of the whole vehicle on the cross beam lower plate 302, the present embodiment can further increase the structural strength of the cross beam lower plate 302, that is, the sub-frame middle cross beam 3, by using the pit 3021.

[0058] Still referring to Figure 4 , as a preferred implementation form of the present embodiment, the width of the end of the cross beam lower plate 302 connected to the left side sub-frame longitudinal beam 1 is also gradually increased in the direction pointing to the left side sub-frame longitudinal beam 1, and this width is also the width k of the cross beam lower plate 302 along the front-rear direction of the whole vehicle. In this way, the width k of the end of the cross beam lower plate 302 connected to the left side sub-frame longitudinal beam 1 is gradually increased, which can be as shown in Figure 4 , so that the left end of the cross beam lower plate 302 is a trumpet mouth structure, thereby being able to increase the connection length between the cross beam lower plate 302 and the left side sub-frame longitudinal beam 1, and helping to improve the dynamic stiffness of the whole sub-frame.

[0059] As a preferred implementation form, still referring toFigures 1 to 3 As shown, in the embodiment, the part of the cross beam upper plate 301 located at the left side of the suspension mounting seat 5 has a rear side part 3011 and a front side part 3012. Among them, along the front-rear direction of the whole vehicle, the front side part 3012 is located at the front side of the rear side part 3011, and in the up-down direction of the whole vehicle, the top of the rear side part 3011 is also higher than that of the front side part 3012.

[0060] At this time, the part of the cross beam upper plate 301 located at the left side of the suspension mounting seat 5 is provided with the rear side part 3011 and the front side part 3012 with different heights, and the stepped structure formed by the front side part 3011 and the rear side part 3012 can be used to increase the structural strength of the left end position of the cross beam upper plate 301, thereby facilitating the improvement of the structural strength of the cross beam 3 in the subframe.

[0061] On the basis of being provided with the above-mentioned rear side part 3011 and front side part 3012, further, as a preferred implementation form, the front side part 3012 in the embodiment has a first front side face 3012a facing the front direction of the vehicle, which is an arch shape arching backward along the front-rear direction of the whole vehicle, and in combination with Figure 3 As shown, the bottom edge of the first front side face 3012a is also connected to the top face 302a of the cross beam lower plate 302.

[0062] It can be understood that by making the first front side face 3012a at the front side part 3012 an arch shape arching backward, and the edge at the bottom of the first front side face 3012a connected to the top face 301a of the cross beam lower plate 301, not only can the structural strength of the front side part 3012 of the cross beam upper plate 301 be increased by taking advantage of the large structural strength of the arch shape, but also the connection length between the front side part 3012 and the cross beam lower plate 301 can be increased, thereby improving the connection strength between the upper and lower plates of the cross beam, as well as the overall structural strength of the cross beam 3 in the subframe.

[0063] In the embodiment, for the above-mentioned rear side part 3011, it also has a second front side face 3011a facing the front direction of the vehicle, and a rear side face 3011b facing the rear direction of the vehicle. And the above-mentioned second front side face 3011a is a plane arranged along the left-right direction of the whole vehicle, so as to utilize the second front side face 3011a as a plane to facilitate the molding of the left end part of the cross beam upper plate 301 with the rear side part 3011 and the front side part 3012.

[0064] And the rear side surface 3011b is arched forward along the front-rear direction of the vehicle, and by making the rear side surface 3011b at the rear side portion 3011 arched forward, on the one hand, the structural strength of the rear side portion 3011 can be increased by taking advantage of the high structural strength of the arched shape, and on the other hand, it can also cooperate with the arched design of the first front side surface 3012a at the front side portion 3012, so that the left end portion of the upper beam plate 301 as a whole has a double-arched funnel-shaped structure, thereby better improving the structural strength of the upper beam plate 301 and the middle beam 3 of the subframe as a whole.

[0065] In this embodiment, as a preferred implementation form, the subframe middle beam 3 has a closed cavity Q located on the right side of the suspension mounting seat 5, which is specifically formed by the upper beam plate 301, the lower beam plate 302, and the suspension mounting seat 5 and the right side of the subframe longitudinal beam 1. Moreover, by making the part of the subframe middle beam 3 on the right side of the suspension mounting seat 5 form a closed cavity Q, the structural strength of the right end portion of the subframe middle beam 3 can be increased by taking advantage of the high structural strength of the cavity structure, so as to improve the overall structural strength of the subframe middle beam 3.

[0066] Of course, in combination with Figure 1 As shown in Figure 2 The closed cavity Q located on the right end portion of the subframe middle beam 3 is specifically in a box-shaped structure. Moreover, not only is there a closed cavity on the right end portion of the subframe middle beam 3, but based on the arrangement of the rear side portion 3011 and the front side portion 3012 of the left end portion of the subframe middle beam 3, a closed cavity is also formed on the left end portion of the subframe middle beam 3, but the cavity on the left end portion is irregular in shape compared to the box-shaped closed cavity Q on the right end portion. However, it can be understood that the cavity structure on the left end portion also plays a role in increasing the structural strength of the subframe middle beam 3.

[0067] In this embodiment, still for the right end portion of the subframe middle beam 3, as a preferred implementation form, an arched first arched structure 3a is arranged on the side of the subframe middle beam 3 facing the front of the vehicle, and an arched second arched structure 3b is also arranged on the side of the subframe middle beam 3 facing the rear of the vehicle. The first arched structure 3a and the second arched structure 3b are both located on the right side of the suspension mounting seat 5, and in terms of specific design, the first arched structure 3a is arched backward along the front-rear direction of the vehicle, and the second arched structure 3b is arched forward along the front-rear direction of the vehicle.

[0068] At this time, by arranging the first arched structure 3a and the second arched structure 3b on the front and rear sides of the right end portion of the subframe middle beam 3, it can be understood that the double-arched structure can also be used to better improve the structural strength of the right end portion of the subframe middle beam 3.

[0069] Further, based on the arrangement of the first and second arch structures 3a and 3b, the distance between the arch top of the first arch structure 3a and the right side sub-frame longitudinal beam 1 is smaller than the distance between the arch top of the second arch structure 3b and the right side sub-frame longitudinal beam 1 in the vehicle left-right direction.

[0070] wherein the first arch structure 3a is still arranged as shown in Figure 2 wherein the arch top position of the first arch structure 3a can be as shown by the dashed line m in Figure 2 wherein the arch top position of the second arch structure 3b can be as shown by the dashed line n in Figure 2 wherein the arch top of the first arch structure 3a is closer to the right side sub-frame longitudinal beam 1 than the arch top of the second arch structure 3b, i.e. Figure 2 wherein in the vehicle left-right direction, the dashed line m is located to the right of the dashed line n in

[0071] By making the distance between the arch top of the first arch structure 3a and the right side sub-frame longitudinal beam 1 smaller than the distance between the arch top of the second arch structure 3b and the right side sub-frame longitudinal beam 1, the present embodiment can utilize the different arch top positions of the front and rear arch structures to achieve the anti-resonance design of the front and rear sides of the sub-frame middle cross beam 3, thereby facilitating the avoidance of resonance and reducing the vibration response sensitivity of the sub-frame middle cross beam 3.

[0072] In specific implementation, along the vehicle left-right direction, taking the overall length of the right side portion of the sub-frame middle cross beam 3 located at the right side of the suspension mounting seat 5 as the reference, for example, the distance between the arch top of the first arch structure 3a and the right side sub-frame longitudinal beam 1 can be 1 / 4 of the overall length of the right side portion of the sub-frame middle cross beam 3, and the distance between the arch top of the second arch structure 3b and the right side sub-frame longitudinal beam 1 can be 1 / 3 of the overall length of the right side portion of the sub-frame middle cross beam 3.

[0073] In the present embodiment, as a preferred implementation form, an arching portion 3c arching towards the vehicle tail direction is arranged at the middle portion of the sub-frame middle cross beam 3 in the vehicle left-right direction, and as shown in Figure 1 along the vehicle front-rear direction, the front end of the suspension mounting seat 5 extends out of the sub-frame middle cross beam 3, and the rear end of the suspension mounting seat 5 extends into the arching portion 3c.

[0074] It can be understood that the middle part of the cross beam 3 of the auxiliary frame is provided with the arch part 3c which arches backward, and the front end of the suspension mounting seat 5 extends out of the cross beam 3 of the auxiliary frame, and the rear end extends into the arch part 3c. Not only can the arch structure of the arch part 3c increase the structural strength of the middle part of the cross beam 3 of the auxiliary frame, but also the front end of the suspension mounting seat 5 extends out of the cross beam 3 of the auxiliary frame, and the rear end extends into the arch part 3c, which can increase the size of the suspension mounting seat 5, increase the connection area and connection strength between the suspension mounting seat 5 and the cross beam 3 of the auxiliary frame, and thus help to improve the dynamic stiffness of the auxiliary frame and the mounting position of the power assembly thereon.

[0075] In addition, in the embodiment, the mounting seat cavity S is also formed between the suspension mounting seat 5 and the lower beam plate 302, and the suspension mounting seat 5 is further provided with the opening T which penetrates the mounting seat cavity S. Figure 1 、 Figure 2 In combination with the suspension mounting seat 5 shown in Figure 5 , the top of the suspension mounting seat 5 arches upward along the up-down direction of the whole vehicle, and the rear end of the suspension mounting seat 5 arches toward the tail of the vehicle along the front-rear direction of the whole vehicle. In this way, by forming the mounting seat cavity S between the suspension mounting seat 5 and the lower beam plate 302, and making the top of the suspension mounting seat 5 arch upward and the rear end arch backward, it is obvious that the cavity structure and the arch structure with high strength can also be used to increase the structural strength of the power assembly mounting point.

[0076] In the embodiment, the opening T which penetrates the mounting seat cavity S is provided at the front end of the suspension mounting seat 5 along the front-rear direction of the whole vehicle. At this time, the front end of the suspension mounting seat 5 is provided with the opening T, which is beneficial to the weight reduction design of the suspension mounting seat 5 and the whole auxiliary frame.

[0077] While the opening T is provided, as a preferred embodiment, triangular recess platforms 501 are provided on the suspension mounting seat 5 on both sides of the opening T, and still referring to Figure 7 , it is shown that the two-sided recess platforms 501 are also located at the connection position between the side and the top of the suspension mounting seat 5.

[0078] By providing the triangular recess platforms 501 on the suspension mounting seat 5 on both sides of the opening T, it can be understood that the structural strength of the suspension mounting seat 5 at the position of the opening T can be ensured on the basis of the opening T, and the dual effects of weight reduction and structural strength guarantee of the suspension mounting seat 5 can be obtained.

[0079] It is worth noting that in the specific implementation, the suspension mounting seat 5 of the embodiment is embedded in the notch 301a of the upper beam plate 301, and the bottom of the suspension mounting seat 5 is welded together with the lower beam plate 302, and the side of the suspension mounting seat 5 is welded together with the edge of the notch 301a.

[0080] Regarding the upper crossbeam 301 and lower crossbeam 302 that constitute the crossbeam 3 in the subframe, in addition to the bottom edge of the front portion 3012 of the upper crossbeam 301 being connected to the top surface 302a of the lower crossbeam 302, in other locations, this embodiment can specifically provide a front flange 3023 and a rear flange 3022 on the front and rear sides of the lower crossbeam 302, respectively. The upper crossbeam 301 can then be connected to the front flange 3023 and the rear flange 3022. Of course, the specific connection method between the upper crossbeam 301 and the lower crossbeam 302 at each location is still welding.

[0081] In this embodiment, the subframe crossbeam is constructed by a crossbeam upper plate 301 and a crossbeam lower plate 302 that are fastened together. The bottom of the suspension mount 5 is connected to the crossbeam lower plate 302, and the side is connected to the crossbeam upper plate 301. With this configuration, this embodiment can not only increase the structural strength of the subframe crossbeam itself by utilizing the fastening connection structure of the upper and lower plates of the crossbeam, but also increase the connection strength between the suspension mount 5 and the subframe crossbeam by utilizing the connection between the side and bottom of the suspension mount 5 and the upper and lower plates of the crossbeam, respectively.

[0082] Therefore, this embodiment can increase the structural strength of the subframe on which the subframe crossbeam is installed, and the powertrain mounting position thereon, thereby reducing the sensitivity to powertrain vibration transmission and reducing vibration noise transmitted to the vehicle body, which is beneficial to improving the driving experience of the vehicle.

[0083] Example 2

[0084] This embodiment relates to a vehicle that has a subframe, and still as Figure 6 and Figure 7 As shown, the subframe of this embodiment has a subframe crossbeam 3 connected between the left and right subframe longitudinal beams 1. This subframe crossbeam 3 is the subframe crossbeam of embodiment one.

[0085] In specific implementation, as described in Embodiment 1, the subframe of this embodiment is preferably a front subframe at the front of the vehicle, thereby making the vehicle of this embodiment a front-mounted powertrain model. Furthermore, in addition to being a front subframe, the subframe in this embodiment can also be a rear subframe, correspondingly making the vehicle of this embodiment a rear-mounted powertrain model.

[0086] In addition, in addition to the subframe middle cross beam 3 provided with the subframe, the front subframe structure is similar to the existing front subframe structure, and in the subframe of the present embodiment, the front subframe is taken as an example, the front subframe cross beam 2 and the rear subframe cross beam 4 are also connected between the two side subframe longitudinal beams 1. The front subframe cross beam 2, the rear subframe cross beam 4 and the rear subframe cross beam 4 are arranged in sequence along the front-rear direction of the vehicle, and the front subframe cross beam 2 is arranged close to the front end of the two side subframe longitudinal beams 1, the rear subframe cross beam 4 is arranged close to the rear end of the two side subframe longitudinal beams 1, and the rear subframe cross beam 4 is arranged close to the rear end of the two side subframe longitudinal beams 1.

[0087] In addition to the front subframe cross beam 2 and the rear subframe cross beam 4, further, in the subframe of the present embodiment, the body connecting arm 7 and the control arm mounting bracket 8 are also provided on each side subframe longitudinal beam 1, the body connecting arm 7 is matched with the mounting sleeve at the front and rear ends of the subframe longitudinal beam 1, and the body connecting arm 7 can be mounted to the bottom of the vehicle body, and the control arm mounting bracket 8 is used to connect the control arm in the vehicle suspension to realize the arrangement of the suspension in the vehicle.

[0088] In the present embodiment, it should be noted that the suspension mounting seat 5 provided on the subframe middle cross beam 3 is specifically used to mount the rear suspension of the power assembly to realize the mounting of the rear end of the power assembly in the subframe. The front suspension for mounting the front end of the power assembly is usually connected to the front subframe cross beam 2, and the mounting of the power assembly on the subframe through the front and rear suspensions can be seen from the related structure in the existing vehicle, which will not be described here.

[0089] In the present embodiment, as mentioned above, the rear subframe cross beam 4 is also connected between the left and right side subframe longitudinal beams 1 in the subframe, and on this basis, Figure 6 , Figure 7 , and further combining Figure 8 It is shown that the present embodiment further connects a reinforcing plate 6 in the area enclosed by the subframe middle cross beam 3, the rear subframe cross beam 4 and the two side subframe longitudinal beams 1, and the reinforcing plate 6 is curved in "S" shape in the front-rear direction of the vehicle.

[0090] At this time, by arranging the reinforcing plate 6 curved in "S" shape in the area enclosed by the subframe middle cross beam 3, the rear subframe cross beam 4 and the two side subframe longitudinal beams 1, the structural strength of the power assembly mounting position on the subframe can be further improved by the reinforcing plate 6. Compared with the ordinary flat plate structure, the reinforcing plate 6 is curved in "S" shape, which can of course increase the structural strength of the reinforcing plate 6 itself to ensure the structural reinforcing effect.

[0091] In specific implementation, combining Figure 7As shown, the edges of the reinforcing plate 6 are connected to the subframe middle beam 3, the subframe rear beam 4 and the two subframe longitudinal beams 1 by welding.

[0092] It can be understood that, by arranging the multiple elliptical protrusions 601 on the reinforcing plate 6, the strength of the reinforcing plate 6 can be increased by the protrusions 601, thereby further improving the structural reinforcing effect of the reinforcing plate 6, and making the subframe of the embodiment have better dynamic stiffness.

[0093] The vehicle of the embodiment can increase the structural strength of the subframe and the power assembly mounting position thereon by adopting the subframe middle beam of the first embodiment, reduce the sensitivity of vibration transmission of the power assembly, reduce the vibration noise transmitted to the vehicle body, improve the driving experience of the vehicle, and have good practicability.

[0094] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A subframe cross beam, characterized in that: comprising a cross beam upper plate (301) and a cross beam lower plate (302) connected together by snap fit, and a suspension mounting seat (5) is arranged in the middle of the subframe cross beam in the left-right direction of the vehicle; the bottom of the suspension mounting seat (5) is connected to the cross beam lower plate (302), and the side of the suspension mounting seat (5) is connected to the cross beam upper plate (301); one side of the subframe cross beam towards the front direction of the vehicle is provided with a first arc structure (3a) in the shape of an arch, and the other side of the subframe cross beam towards the rear direction of the vehicle is provided with a second arc structure (3b) in the shape of an arch; the first arc structure (3a) and the second arc structure (3b) are both located on the right side of the suspension mounting seat (5), and the first arc structure (3a) arches out backward in the front-rear direction of the vehicle, and the second arc structure (3b) arches out forward in the front-rear direction of the vehicle; and / or, in the left-right direction of the vehicle, the distance between the top of the first arc structure (3a) and the right side subframe longitudinal beam (1) is less than the distance between the top of the second arc structure (3b) and the right side subframe longitudinal beam (1); the part of the cross beam upper plate (301) located on the left side of the suspension mounting seat (5) has a rear part (3011) and a front part (3012), and in the front-rear direction of the vehicle, the front part (3012) is located in front of the rear part (3011); in the up-down direction of the vehicle, the top of the rear part (3011) is higher than the front part (3012); wherein: the front part (3012) has a first front side (3012a) towards the front direction of the vehicle, the first front side (3012a) is in the shape of an arch arching out backward in the front-rear direction of the vehicle, and the bottom edge of the first front side (3012a) is connected to the top surface (302a) of the cross beam lower plate (302); and / or, the rear part (3011) has a second front side (3011a) towards the front direction of the vehicle, and a rear side (3011b) towards the rear direction of the vehicle, the second front side (3011a) is a plane arranged in the left-right direction of the vehicle, and / or the rear side (3011b) is in the shape of an arch arching out forward in the front-rear direction of the vehicle. 2.The subframe cross beam according to claim 1, characterized in that: the subframe cross beam has a closed cavity (Q) located on the right side of the suspension mounting seat (5), and the closed cavity (Q) is formed by the cross beam upper plate (301), the cross beam lower plate (302), the suspension mounting seat (5), and the subframe longitudinal beam (1) connected to the right end of the subframe cross beam. 3.The subframe cross beam according to claim 1 or 2, characterized in that: an arching part (3c) arching out in the rear direction of the vehicle is arranged in the middle of the subframe cross beam in the left-right direction of the vehicle; in the front-rear direction of the vehicle, the front end of the suspension mounting seat (5) protrudes out of the subframe cross beam, and the rear end of the suspension mounting seat (5) extends into the arching part (3c). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 4. The subframe cross beam according to claim 3, characterized in that: a seat cavity (S) is formed between the suspension seat (5) and the cross beam lower plate (302); the top of the suspension seat (5) is arched upward in the up-down direction of the vehicle, and the rear end of the suspension seat (5) is arched toward the tail of the vehicle in the front-rear direction of the vehicle.

5. The subframe cross beam according to claim 4, characterized in that: the front end of the suspension seat (5) is provided with an opening (T) penetrating the seat cavity (S) in the front-rear direction of the vehicle; the suspension seat (5) on both sides of the opening (T) is provided with a triangular recessed platform (501), and the recessed platform (501) on both sides is located at the connecting position between the side and the top of the suspension seat (5).

6. A vehicle, characterized in that: the vehicle is provided with a subframe; the subframe has a subframe middle cross beam (3) connected between the left and right subframe longitudinal beams (1), and the subframe middle cross beam (3) is the subframe cross beam according to any one of claims 1 to 5.

7. The vehicle according to claim 6, characterized in that: the subframe has a subframe rear cross beam (4) connected between the left and right subframe longitudinal beams (1), and a reinforcing plate (6) is connected in the area enclosed by the subframe middle cross beam (3), the subframe rear cross beam (4), and the left and right subframe longitudinal beams (1); the reinforcing plate (6) is curved in the "S" shape in the front-rear direction of the vehicle; and / or, the reinforcing plate (6) is provided with an elliptical protrusion (601), the length direction of the protrusion (601) is arranged in the front-rear direction of the vehicle, and the protrusion (601) is a plurality of protrusions arranged in the left-right direction of the vehicle.

Images