Subframe assembly and vehicle having the same

Abstract

The application discloses a sub-frame assembly and a vehicle with the same, and the sub-frame assembly comprises a lower plate, a front cross beam, a rear cross beam and an upper plate. The sub-frame assembly is used for a vehicle, the front cross beam is arranged above the lower plate and connected with the lower plate, and the front cross beam extends along the left-right direction of the vehicle; the rear cross beam is arranged in the front-rear direction of the vehicle and spaced from the front cross beam, the rear cross beam is arranged above the lower plate and connected with the lower plate, and the rear cross beam extends along the left-right direction of the vehicle; the upper plate is arranged above the lower plate and connected with the lower plate, the left and right ends of the lower plate are both provided with the upper plate, the upper plate is a plurality of upper plates, and the front and rear ends of each upper plate are connected with the front cross beam and the rear cross beam respectively. According to the sub-frame assembly, the sub-frame assembly has high integration, high rigidity and high structural strength, resonance between the sub-frame assembly and the engine or the motor can be avoided, and the problem of accelerating roar or motor howling can be effectively inhibited.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a subframe assembly and a vehicle with the same. BACKGROUND

[0002] In the related art, the conventional butterfly-shaped front subframe has a complex structure, a large number of components, and a low modal frequency, so that the installation modal frequency of the front subframe is easily coupled with the rotational frequency of the engine or motor under the acceleration condition, thereby causing resonance, resulting in the problem of engine acceleration roar or motor whine. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a subframe assembly, which has a high integration degree, high stiffness and structural strength, and can avoid resonance between the subframe assembly and the engine or motor, thereby effectively suppressing the problem of acceleration roar or motor whine.

[0004] The present application also provides a vehicle comprising the above-mentioned subframe assembly.

[0005] The subframe assembly according to the embodiments of the present application comprises a lower plate, a front cross beam, a rear cross beam and an upper plate. The subframe assembly is used in a vehicle, the front cross beam is located above the lower plate and connected to the lower plate, and extends along the left-right direction of the vehicle; the rear cross beam is spaced apart from the front cross beam along the front-rear direction of the vehicle, is located above the lower plate and connected to the lower plate, and extends along the left-right direction of the vehicle; the upper plate is located above the lower plate and connected to the lower plate, both ends of the lower plate in the left-right direction are provided with the upper plate, the upper plate is a plurality of plates, and the front-rear ends of each upper plate are connected to the front cross beam and the rear cross beam, respectively.

[0006] The subframe assembly according to the embodiments of the present application has the front cross beam, the rear cross beam and the plurality of upper plates all connected to the upper side of the lower plate, the front cross beam and the rear cross beam both extend along the left-right direction and are spaced apart along the front-rear direction, the plurality of upper plates are arranged at both ends of the lower plate in the left-right direction, and the front-rear ends of each upper plate are connected to the front cross beam and the rear cross beam, respectively, so as to form a substantially quadrilateral frame structure, which is simple in structure and high in integration degree. The torsional and bending resistance can be effectively improved, the structural strength and overall rigidity of the subframe assembly can be enhanced, the modal frequency can be improved, resonance between the subframe assembly and the engine or motor can be avoided, and the problem of acceleration roar or motor whine can be effectively suppressed. Stress concentration can also be avoided, the service life can be prolonged, and the steering gear, suspension and other components can be more stably supported, thereby improving the reliability and maneuverability of the vehicle.

[0007] According to some embodiments of the present application, a first cavity is defined between the front cross beam and the lower plate; and / or, a second cavity is defined between the rear cross beam and the lower plate; and / or, a third cavity is defined between the upper plate and the lower plate.

[0008] According to some embodiments of the present application, an upper surface of the lower plate is provided with a groove extending along the left-right direction of the vehicle and opposite to the rear cross beam, and a lower surface of the lower plate is provided with a protrusion opposite to the groove and extending along the left-right direction of the vehicle.

[0009] According to some embodiments of the present application, the lower plate is an integral piece.

[0010] According to some embodiments of the present application, the lower plate has an avoiding hole extending therethrough, the avoiding hole is located between the front cross beam and the rear cross beam in the front-rear direction, and the avoiding hole is located between two upper plates in the left-right direction.

[0011] According to some embodiments of the present application, the front cross beam has a mounting groove, and the sub-frame assembly further comprises a suspension box, at least part of the suspension box is located in the mounting groove, the suspension box comprises a body, the body has a first suspension mounting point, an end of the body opposite to the first suspension mounting point is open along the up-down direction of the vehicle and has a mounting flange extending towards the center direction of the suspension box, the body is connected with the front cross beam, and the mounting flange is connected with the lower plate.

[0012] In some embodiments of the present application, the mounting flange is a plurality of mounting flanges, and the plurality of mounting flanges are arranged at intervals along the circumferential direction of the body.

[0013] In some embodiments of the present application, any two adjacent mounting flanges have a connecting groove extending to the body.

[0014] In some embodiments of the present application, the body comprises a top plate and a side plate, the top plate has the first suspension mounting point, the side plate extends along the length direction of the top plate, an upper end of the side plate is connected with an outer edge of the top plate, and a lower end has the mounting flange.

[0015] In some embodiments of the present application, the side plate has a notch on one side along the front-rear direction of the vehicle.

[0016] In some embodiments of the present application, the lower plate has a second suspension mounting point arranged opposite to the first suspension mounting point.

[0017] In some embodiments of the present application, the front cross beam comprises a first plate and a second plate, the first plate is located above the lower plate and is spaced apart from the lower plate, the first plate has a matching groove; the second plate is two and extends along the left-right direction, the upper ends of the two second plates are respectively connected to the two ends of the first plate along the front-rear direction of the vehicle, and the lower ends of the two second plates are respectively connected to the lower plate, one of the second plates has a matching hole communicated with the matching groove, the matching groove and the matching hole form the mounting slot, the first plate is located above the suspension box and is connected to the suspension box, and the second plate forming the matching hole is connected to the suspension box.

[0018] According to some embodiments of the present application, the subframe assembly further comprises a vehicle body connecting assembly connected to the upper surface of the lower plate, the vehicle body connecting assembly comprises a mounting tower and a rear mounting sleeve, the mounting tower is arranged at the front end of the lower plate, and the two sides of the front cross beam in the length direction are connected to the mounting tower, and the rear mounting sleeve is arranged at the rear end of the lower plate.

[0019] In some embodiments of the present application, the mounting tower comprises a first support, a second support and a sealing plate, the first support and the second support are opposite to each other in the front-rear direction of the vehicle and are connected to each other; the sealing plate is located on the lower side of the first support in the up-down direction of the vehicle and is connected to the first support and the second support, the ends of the first support and the second support away from the sealing plate are connected to the vehicle body, and the sealing plate and the first support are an integral piece.

[0020] In some embodiments of the present application, the first support is provided with a recessed avoiding part towards the second support; or, the second support is provided with a recessed avoiding part towards the first support.

[0021] In some embodiments of the present application, the ends of the first support and the second support away from the sealing plate are connected with a front mounting sleeve for connecting to the vehicle body.

[0022] In some embodiments of the present application, the first support and the second support are welded; or, the mounting tower is an integral piece.

[0023] In some embodiments of the present application, the sealing plate is provided with a water leakage hole.

[0024] In some embodiments of the present application, the first support comprises a first body portion, a first flange and a second flange, the first flange and the second flange are connected to both ends of the first body portion in the width direction and are bent towards the second support, the first flange and the second flange are both connected to the second support, and one end of the first body portion in the length direction is connected to the sealing plate; and / or, the second support comprises a second body portion, a third flange and a fourth flange, the third flange and the fourth flange are connected to both ends of the second body portion in the width direction and are bent towards the first support, the third flange and the fourth flange are both connected to the first support, and one end of the second body portion in the length direction is connected to the sealing plate.

[0025] In some embodiments of the present application, the lower ends of the first support and the second support are both connected to the lower plate, and the first support and the second support are connected to the end faces of both ends of the front cross beam in the length direction.

[0026] In some embodiments of the present application, the first support and the second support are arranged in the front-rear direction of the lower plate.

[0027] In some embodiments of the present application, the subframe assembly further comprises a reinforcing plate, the reinforcing plate is arranged between the upper plate and the lower plate, the upper and lower end faces of the reinforcing plate are respectively connected to the upper plate and the lower plate, the reinforcing plate extends in the front-rear direction of the vehicle, and the front and rear sections of the reinforcing plate are respectively connected to the mounting tower and the rear mounting sleeve.

[0028] In some embodiments of the present application, at least one end face of the reinforcing plate in the thickness direction is provided with a reinforcing groove, and the reinforcing groove extends in the length direction of the reinforcing plate.

[0029] In some embodiments of the present application, a weight-reducing hole is arranged on the reinforcing plate, and the weight-reducing hole penetrates through the reinforcing plate in the thickness direction of the reinforcing plate.

[0030] In some embodiments of the present application, the weight-reducing hole is a counter-sunk hole and / or a tapered hole; and / or, the weight-reducing hole is a plurality of weight-reducing holes, and the plurality of weight-reducing holes are arranged at intervals in the length direction of the reinforcing plate.

[0031] In some embodiments of the present application, the reinforcing plate comprises a plate body and an upper flange, the lower end face of the plate body is connected to the upper end face of the lower plate, the upper end face of the plate body is connected to the lower end face of the upper plate, the front end of the plate body is connected to the mounting tower, and the rear end of the plate body is connected to the rear mounting sleeve; the upper end of the plate body is provided with the upper flange, and the upper surface of the upper flange abuts against the upper plate.

[0032] In some embodiments of the present application, the reinforcing plate further comprises a lower flange, the lower end of the plate body is provided with the lower flange, and the lower surface of the lower flange abuts against the lower plate.

[0033] In some embodiments of the present application, the upper plate is provided with a first stabilizer bar mounting point, the upper flange is provided with a second stabilizer bar mounting point, and the first stabilizer bar mounting point and the second stabilizer bar mounting point are both used for mounting the stabilizer bar of the vehicle, the second stabilizer bar mounting point is arranged opposite to the first stabilizer bar mounting point in the up-down direction.

[0034] In some embodiments of the present application, the two vehicle body connecting assemblies are respectively arranged at the left and right ends of the lower plate and connected to the upper surface of the lower plate, the two reinforcing plates are respectively arranged at the left and right ends of the lower plate and connected to the upper surface of the lower plate, and the front and rear ends of the reinforcing plates are respectively connected to the mounting tower and the rear mounting sleeve in the same vehicle body connecting assembly.

[0035] In some embodiments of the present application, the two upper plates are arranged in the left-right direction and connected to the two vehicle body connecting assemblies and the two reinforcing plates.

[0036] In some embodiments of the present application, the lower plate comprises a plate member and a steering gear mounting sleeve, the upper surface of the plate member is connected to the vehicle body connecting assembly and the reinforcing plate, one end of the steering gear mounting sleeve in the axial direction is connected to the plate member, the other end extends upward and abuts against the upper plate, and the steering gear mounting sleeve is arranged between the two reinforcing plates.

[0037] In some embodiments of the present application, the upper end of the reinforcing plate is provided with a avoiding groove.

[0038] In some embodiments of the present application, the lower plate further comprises a control arm mounting point, the two control arm mounting points are arranged on the sides of the two reinforcing plates away from each other, and are used for mounting the control arm of the vehicle.

[0039] The vehicle according to the embodiments of the present application comprises the auxiliary frame assembly.

[0040] The vehicle according to the embodiment of the present application is provided with a subframe assembly, by connecting the front cross beam, the rear cross beam and the plurality of upper plates above the lower plate, the front cross beam and the rear cross beam are both extended along the left-right direction and are spaced apart along the front-rear direction, the plurality of upper plates are arranged at the left and right ends of the lower plate, and the front and rear ends of each upper plate are connected with the front cross beam and the rear cross beam respectively, so that a frame structure in a general quadrilateral shape can be formed, which is simple in structure and high in integration degree. The torsional and bending resistance can be effectively improved, the structural strength and overall rigidity of the subframe assembly are enhanced, so that the modal frequency is improved, resonance between the subframe assembly and the engine or motor is avoided, and the problem of accelerating roar or motor howling is effectively inhibited. Stress concentration can also be avoided, the service life is prolonged, and the steering gear, suspension and other components are provided with more stable support, so that the reliability and maneuverability of the vehicle are improved.

[0041] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0042] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0043] Figure 1 is a structural diagram of a subframe assembly according to an embodiment of the present application;

[0044] Figure 2 is a structural diagram of the subframe assembly from another perspective according to an embodiment of the present application;

[0045] Figure 3 is a structural diagram of the subframe assembly from another perspective according to an embodiment of the present application;

[0046] Figure 4 is a structural diagram of a mounting tower of the subframe assembly according to an embodiment of the present application;

[0047] Figure 5 is an exploded view of the mounting tower of the subframe assembly from one angle according to an embodiment of the present application;

[0048] Figure 6 is an exploded view of the mounting tower of the subframe assembly from another angle according to an embodiment of the present application;

[0049] Figure 7 is a structural diagram of a suspension box of the subframe assembly according to an embodiment of the present application;

[0050] Figure 8 is a structural diagram of a reinforcing plate of the subframe assembly according to an embodiment of the present application;

[0051] Figure 9is a structural view of a lower panel of a subframe assembly according to an embodiment of the present application;

[0052] Figure 10 is a sectional view of a subframe assembly according to an embodiment of the present application.

[0053] Reference numerals:

[0054] 1000, subframe assembly;

[0055] 100, mounting tower;

[0056] 11, first support; 12, second support; 13, closing plate; 14, front mounting sleeve; 111, avoiding portion; 112, first body portion; 113, first flange; 114, second flange; 121, second body portion; 122, third flange; 123, fourth flange; 131, water leakage hole;

[0057] 200, suspension box; 21, body; 211, top plate; 2111, first suspension mounting point; 212, side plate; 2121, mounting flange; 2122, notch; 2123, connecting groove;

[0058] 300, front cross beam; 31, mounting groove; 32, first plate; 33, second plate;

[0059] 400, reinforcing plate; 41, plate body; 42, upper flange; 43, lower flange; 44, reinforcing groove; 45, weight-reducing hole; 46, second stabilizer bar mounting point; 47, avoiding groove;

[0060] 500, lower panel; 51, panel; 52, steering gear mounting sleeve; 53, control arm mounting point; 54, second suspension mounting point; 55, avoiding hole; 56, groove; 57, protrusion;

[0061] 600, upper panel; 61, first stabilizer bar mounting point;

[0062] 700, rear cross beam;

[0063] 800, body connecting assembly; 81, rear mounting sleeve. DETAILED DESCRIPTION

[0064] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which like numerals indicate like elements or elements having the same or similar function. The embodiments described below are exemplary only, and are not to be construed as limiting the present application.

[0065] In the description of the present application, it needs to 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" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element 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, the features defined as "first" and "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0066] In the description of the present application, it needs to be understood that the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or 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 according to the specific circumstances.

[0067] Reference will be made to the drawings Figures 1-8 The subframe assembly 1000 according to the embodiment of the present application is described.

[0068] As Figures 1-3 shown, the subframe assembly 1000 according to the embodiment of the present application includes a lower plate 500, a front cross beam 300, a rear cross beam 700 and an upper plate 600.

[0069] Specifically, as Figures 1-3 shown, the subframe assembly 1000 is used for a vehicle, the front cross beam 300 is located above the lower plate 500 and connected with the lower plate 500, the front cross beam 300 extends along the left-right direction of the vehicle, the rear cross beam 700 is spaced apart from the front cross beam 300 along the front-rear direction of the vehicle, the rear cross beam 700 is located above the lower plate 500 and connected with the lower plate 500, the rear cross beam 700 extends along the left-right direction of the vehicle. The upper plate 600 is located above the lower plate 500 and connected with the lower plate 500, both left and right ends of the lower plate 500 are provided with the upper plate 600, the upper plate 600 is a plurality of, and the front and rear ends of each upper plate 600 are connected with the front cross beam 300 and the rear cross beam 700 respectively.

[0070] It can be understood that the front cross beam 300 connected with the lower plate 500 extends along the left-right direction of the vehicle, and the rear cross beam 700 connected with the lower plate 500 extends along the front-rear direction of the vehicle. Figure 1The front cross beam 300 and the rear cross beam 700 are arranged in the left-right direction and connected to the lower plate 500, and the left and right ends of the front cross beam 300 and the rear cross beam 700 are connected to the upper plates 600, which can enhance the rigidity of the vehicle head and provide fixed mounting points for components such as engines, suspensions, etc. The rear cross beam 700 extending in the left-right direction is located behind the front cross beam 300 and is connected to the lower plate 500, and the left and right ends of the rear cross beam 700 are connected to the ends of the upper plates 600 away from the front cross beam 300, which can improve the stability of the vehicle body and provide fixed positions for components such as fuel tanks, etc. The upper plates 600 are multiple and are arranged at the left and right ends of the upper plates 600, which can absorb impact force when the vehicle collides from the side and provide fixed mounting points for components such as control arms, stabilizer bars, and steering gears, etc.

[0071] The front cross beam 300, the rear cross beam 700, and the multiple upper plates 600 are connected to the lower plate 500, and each upper plate 600 is connected to the front cross beam 300 and the rear cross beam 700, which has a simple structure and high integration degree, and can ensure the compactness of the subframe assembly 1000. The front cross beam 300, the rear cross beam 700, and the multiple upper plates 600 can form a generally quadrilateral frame structure, which can effectively improve the torsional and bending resistance, enhance the structural strength and overall rigidity of the subframe assembly 1000, and thus can improve the modal frequency of the subframe assembly 1000, avoid the coupling of the modal frequency of the subframe assembly 1000 and the rotational speed frequency under the acceleration condition of the engine or motor, reduce the risk of resonance, block the vibration and noise from entering the vehicle body, and thus effectively suppress the problem of acceleration roar or motor whine caused by resonance.

[0072] At the same time, the frame structure of the subframe assembly 1000 uniformly distributes the load and avoids local stress concentration, which can prolong the service life. It can also provide more stable support for components such as control arms, stabilizer bars, steering gears, and suspensions, etc., and improve the reliability and maneuverability of the vehicle.

[0073] Preferably, the upper plates 600 are two arranged at the left and right ends of the lower plate 500.

[0074] According to the subframe assembly 1000 of the embodiment of the present application, by connecting the front cross beam 300, the rear cross beam 700 and the plurality of upper plates 600 above the lower plate 500, the front cross beam 300 and the rear cross beam 700 are both extended along the left-right direction and are spaced apart along the front-rear direction, and the plurality of upper plates 600 are arranged at the left and right ends of the lower plate 500, and the front and rear ends of each upper plate 600 are connected with the front cross beam 300 and the rear cross beam 700 respectively, a frame structure in a general quadrilateral shape can be formed, which is simple in structure and high in integration. The torsional and bending resistance can be effectively improved, the structural strength and overall rigidity of the subframe assembly 1000 are enhanced, and thus the modal frequency is improved, resonance between the subframe assembly 1000 and the engine or motor is avoided, and thus the problem of accelerating roar or motor howling is effectively inhibited. Stress concentration can also be avoided, the service life is prolonged, and more stable support is provided for the steering gear, suspension and other components, thereby improving the reliability and maneuverability of the vehicle.

[0075] In some embodiments of the present application, as shown in Figures 1-3 A first cavity is defined between the front cross beam 300 and the lower plate 500. The first cavity can improve the bending and torsional resistance of the front cross beam 300, further enhance the overall rigidity and structural strength of the subframe assembly 1000, and effectively absorb and disperse impact energy during a collision, thereby effectively reducing vibration and noise. At the same time, the weight of the subframe assembly 1000 can be reduced, lightweight design can be achieved, and thus the modal frequency of the subframe assembly 1000 can be improved, the modal frequency of the subframe assembly 1000 is avoided from being coupled with the rotational frequency under the accelerating condition of the engine or motor, to reduce the risk of resonance, vibration and noise can be blocked from entering the vehicle body, and thus the problem of accelerating roar or motor howling caused by resonance is effectively inhibited.

[0076] In some embodiments of the present application, as shown in Figures 1-3 A second cavity is defined between the rear cross beam 700 and the lower plate 500. The second cavity can improve the bending and torsional resistance of the rear cross beam 700, further enhance the overall rigidity and structural strength of the subframe assembly 1000, and effectively absorb and disperse impact energy during a collision, thereby effectively reducing vibration and noise. At the same time, the weight of the subframe assembly 1000 can be reduced, lightweight design can be achieved, and thus the modal frequency of the subframe assembly 1000 can be improved, the modal frequency of the subframe assembly 1000 is avoided from being coupled with the rotational frequency under the accelerating condition of the engine or motor, to reduce the risk of resonance, vibration and noise can be blocked from entering the vehicle body, and thus the problem of accelerating roar or motor howling caused by resonance is effectively inhibited.

[0077] In some embodiments of the present application, as shown in Figures 1-3As shown, a third cavity is defined between the upper plate 600 and the lower plate 500. The third cavity can improve the bending and torsion resistance of the upper plate 600, further enhance the overall stiffness and structural strength of the subframe assembly 1000, effectively absorb and disperse impact energy in a collision, thereby effectively reducing vibration and noise. At the same time, it can reduce the weight of the subframe assembly 1000, achieve lightweight design, thereby improving the modal frequency of the subframe assembly 1000, avoiding the coupling of the modal frequency of the subframe assembly 1000 with the rotational speed frequency of the engine or motor under acceleration conditions, to reduce the risk of resonance, and can block vibration and noise from entering the vehicle body, thereby effectively suppressing the problem of acceleration roar or motor whine caused by resonance.

[0078] In some embodiments of the present application, as shown in Figure 9 and Figure 10 As shown, the upper surface of the lower plate 500 is provided with a groove 56 extending in the left-right direction of the vehicle and opposite to the rear cross beam 700, and the lower surface of the lower plate 500 is provided with a protrusion 57 opposite to the groove 56 and extending in the left-right direction of the vehicle. It can be understood that in the front-rear direction of the vehicle, the battery on the vehicle is located at the rear of the lower plate 500, and the oppositely arranged groove 56 and protrusion 57 are arranged at the rear end of the lower plate 500. When the road surface on which the vehicle travels has protrusions such as boulders, the protrusions on the road surface will first contact the protrusion 57 on the lower surface of the lower plate 500 and lift the vehicle along the surface of the protrusion 57, thereby preventing the protrusions on the ground from scratching or colliding with the battery, and protecting the battery on the vehicle, thereby improving the safety of the battery and the vehicle.

[0079] In addition, the oppositely arranged groove 56 and protrusion 57 on the lower plate 500 can effectively improve the structural strength of the lower plate 500 and improve the torsion resistance and bending resistance, thereby enhancing the strength of the mounting point of the rear end of the lower plate 500 and the vehicle body, and further enhancing the overall structural strength and rigidity of the subframe assembly 1000.

[0080] In some embodiments of the present application, as shown in Figures 1-3 The lower plate 500 is a one-piece. It can avoid the problem of cracking caused by welding after the lower plate 500 is divided, and the one-piece lower plate 500 can simplify the structure and reduce the number of parts, improve the overall structure and integration, further enhance the rigidity and structural strength, and at the same time enhance the stability of the front cross beam 300, the rear cross beam 700 and the upper plate 600 integrated and fixed on the lower plate 500, thereby enhancing the stability and reliability of the subframe assembly 1000. In addition, the one-piece lower plate 500 can reduce the welding points, improve the fatigue durability, simplify the production process and assembly process, and improve the production efficiency and reduce the cost.

[0081] In some embodiments of the present application, as shown in Figure 1 andFigure 3 As shown, the lower plate 500 has an avoidance hole 55 penetrating the lower plate 500, the avoidance hole 55 is located between the front cross beam 300 and the rear cross beam 700 in the front-rear direction, and the avoidance hole 55 is located between the two upper plates 600 in the left-right direction. The avoidance hole 55 can reduce the weight of the subframe assembly 1000 while ensuring the structural strength and rigidity, achieving lightweight design, thereby improving the modal frequency of the subframe assembly 1000, avoiding the coupling of the modal frequency of the subframe assembly 1000 with the rotational frequency of the engine or motor under acceleration conditions, to reduce the risk of resonance, and can block vibration and noise from entering the vehicle body, thereby effectively suppressing the problem of acceleration roar or motor howling caused by resonance. In addition, it can also absorb and disperse more impact energy through controllable deformation during a collision, thereby effectively reducing vibration and noise. In addition, the avoidance hole 55 can also provide more space for other components of the vehicle, facilitating the layout and installation of vehicle components.

[0082] According to some embodiments of the present application, as shown in Figures 1-3 , Figure 7 As shown, the front cross beam 300 has a mounting groove 31, and the subframe assembly 1000 further comprises a suspension box 200, at least part of the suspension box 200 is located in the mounting groove 31, the suspension box 200 comprises a body 21, the body 21 has a first suspension mounting point 2111, in the up-down direction of the vehicle, the end of the body 21 opposite to the first suspension mounting point 2111 is open and has a mounting flange 2121 extending towards the center direction of the suspension box 200, the body 21 is connected with the front cross beam 300, and the mounting flange 2121 is connected with the lower plate 500.

[0083] It can be understood that the first suspension mounting point 2111 provides a mounting point for the suspension, so that the suspension can be mounted on the suspension box 200, and when the suspension box 200 is applied to the subframe assembly 1000, the suspension is mounted on the subframe assembly 1000. The end of the body 21 opposite to the first suspension mounting point 2111 has a mounting flange 2121, which is connected with the lower plate 500 of the subframe assembly 1000 through the mounting flange 2121, to fix the suspension box 200. At the same time, the mounting flange 2121 extends towards the center direction of the suspension box 200, thereby increasing the connection area between the flange and the lower plate 500 of the subframe assembly 1000, effectively improving the connection strength of the two, to ensure that the suspension box 200 is not easy to deform or fall off. In addition, the structure that the mounting flange 2121 extends towards the center direction of the suspension box 200 can improve the torsional resistance of the suspension box 200, when the suspension box 200 is subjected to a torsional force, the mounting flange 2121 can act as an additional support structure to disperse and resist the torsional force, thereby protecting the first suspension mounting point 2111 from damage, and further protecting the suspension and improving reliability.

[0084] The body 21 is connected with the first cross beam, the mounting flange 2121 is connected with the lower plate 500, and the fixing of the suspension box 200 is realized. At the same time, since the first cross beam is connected with the lower plate 500, the suspension box 200 is connected with the first cross beam and the lower plate 500 respectively, the connection strength between the suspension box 200, the first cross beam and the lower plate 500 is effectively improved, and the structural strength of the whole auxiliary frame assembly 1000 is improved.

[0085] In some embodiments of the present application, as shown in Figure 3 and Figure 7 , the mounting flange 2121 is provided in plurality, and the plurality of mounting flanges 2121 are arranged at intervals along the circumferential direction of the body 21. In this way, the plurality of mounting flanges 2121 are connected with the lower plate 500 of the auxiliary frame assembly 1000 respectively, so that the plurality of mounting flanges 2121 can effectively disperse stress, effectively improve the overall structural strength and stability of the suspension box 200. At the same time, when the mounting flange 2121 is welded with the lower plate 500, the plurality of mounting flanges 2121 are arranged at intervals along the circumferential direction of the body 21, so that the plurality of mounting flanges 2121 are welded with the lower plate 500 respectively, which can significantly reduce the length of the whole weld, reduce the welding deformation and improve the process stability, thereby improving the reliability of the connection.

[0086] In some embodiments of the present application, as shown in Figure 7 , the connection groove 2123 is provided between any two adjacent mounting flanges 2121, and the connection groove 2123 extends to the body 21. In this way, the certain concave-convex structure is formed through the connection groove 2123, which can more effectively disperse external force, so that the suspension box 200 can better maintain its shape and structural stability when subjected to pressure or impact force, thereby enhancing the overall structural strength of the suspension box 200. At the same time, when the plurality of mounting flanges 2121 are welded with the lower plate 500 respectively, the connection groove 2123 provides a welding position for the welding operation, which facilitates the connection between the mounting flange 2121 and the lower plate 500, effectively improves the welding quality and efficiency, and thereby improves the overall reliability.

[0087] In some embodiments of the present application, as shown in Figure 7 , the body 21 includes a top plate 211 and a side plate 212, the top plate 211 has a first suspension mounting point 2111, and the side plate 212 extends along the length direction of the top plate 211, the upper end of the side plate 212 is connected with the outer edge of the top plate 211, and the lower end has a mounting flange 2121. In this way, the first suspension mounting point 2111 on the top plate 211 provides a mounting position for the suspension, and the mounting flange 2121 at the lower end of the side plate 212 is connected with the lower plate 500 of the auxiliary frame assembly 1000, thereby realizing the fixing of the suspension box 200.

[0088] Further, the suspension box 200 is an integral piece, thereby effectively improving the overall structural strength of the suspension box 200, and meanwhile, when the suspension box 200 is applied to the subframe assembly 1000, the integral piece of the suspension box 200 reduces assembly steps and improves assembly efficiency.

[0089] In some embodiments of the present application, as shown in Figure 7 the side plate 212 has a notch 2122 on one side thereof along the front-rear direction of the vehicle. It can be understood that, since the first suspension mounting point 2111 on the top plate 211 provides a mounting position for the suspension, the notch 2122 on the side plate 212 is configured to allow the suspension to enter the suspension box 200 through the notch 2122 to cooperate with the first suspension mounting point 2111, thereby facilitating the installation of the suspension.

[0090] In some embodiments of the present application, as shown in Figure 3 and Figure 7 the lower plate 500 has a second suspension mounting point 54 arranged opposite to the first suspension mounting point 2111. Thus, the first suspension mounting point 2111 and the second suspension mounting point 54 together provide a mounting position for the suspension, further ensuring the accurate positioning of the suspension, thereby ensuring the stability of the power assembly under various working conditions. Meanwhile, the first suspension mounting point 2111 and the second suspension mounting point 54 are arranged opposite to each other in the up-down direction, which can form an effective support structure, improve the rigidity and durability of the suspension, and further improve the handling and stability of the vehicle.

[0091] In some embodiments of the present application, as shown in Figure 3 and Figure 7 the front cross beam 300 includes a first plate 32 and a second plate 33, the first plate 32 is arranged above the lower plate 500 and spaced apart from the lower plate 500, and the first plate 32 has a fitting groove; the second plate 33 is two and extends along the left-right direction, the upper ends of the two second plates 33 are respectively connected to the two ends of the first plate 32 along the front-rear direction of the vehicle, and the lower ends of the two second plates 33 are respectively connected to the lower plate 500, wherein one of the second plates 33 has a fitting hole in communication with the fitting groove, the fitting groove and the fitting hole form an installation groove 31, the first plate 32 is arranged above the suspension box 200 and connected to the body 21, and the second plate 33 forming the fitting hole is connected to the body 21.

[0092] Thus, the cavity formed by the first plate 32, the two second plates 33 and the lower plate 500 can take advantage of the large structural strength of the cavity to increase the overall structural strength of the subframe assembly 1000, while reducing the overall weight of the subframe assembly 1000 to achieve the lightweight of the vehicle.

[0093] Meanwhile, the mounting groove 31 is formed by the matching groove and the matching hole, so that the mounting groove 31 can avoid the suspension box 200, and the auxiliary frame assembly 1000 can be smoothly assembled. Specifically, the assembly process of the auxiliary frame assembly 1000 is as follows: the suspension box 200 is located above the lower plate 500, and the mounting flange 2121 is connected to the lower plate 500; the first cross beam is mounted from top to bottom above the lower plate 500, and the first plate 32 is located above the suspension box 200; and the second plate 33 is connected to the lower plate 500 and the suspension box 200, respectively.

[0094] In addition, by locating the first plate 32 above the suspension box 200 and connecting it to the body 21, the second plate 33 forming the matching hole is connected to the suspension box 200, further improving the reliability of the connection between the first cross beam and the suspension box 200, thereby improving the structural strength of the auxiliary frame assembly 1000.

[0095] Further, the side plate 212 of the body 21 has a notch 2122 on one side in the front-rear direction of the vehicle, which communicates with the matching hole. It can be understood that, since the first suspension mounting point 2111 on the top plate 211 and the second suspension mounting point 54 on the lower plate 500 provide mounting positions for the suspension, the structure of the notch 2122 and the matching hole enables the suspension to smoothly enter the suspension box 200 and cooperate with the first suspension mounting point 2111 and the second suspension mounting point 54, thereby facilitating the installation of the suspension.

[0096] In some embodiments of the present application, as shown in Figure 3 and Figure 7 The auxiliary frame assembly 1000 further includes a vehicle body connecting assembly 800, which is connected to the upper surface of the lower plate 500. The vehicle body connecting assembly 800 can connect the lower plate 500 to the vehicle body, increase the force transmission path between the auxiliary frame assembly 1000 and the vehicle body of the vehicle, and enable the vehicle to disperse impact forces to multiple locations of the vehicle when the vehicle is impacted, thereby increasing the energy absorption effect of the vehicle.

[0097] The vehicle body assembly includes a mounting tower 100 and a rear mounting sleeve 81. The mounting tower 100 is arranged at the front end of the lower plate 500, and both sides of the front cross beam 300 in the length direction are connected to the mounting tower 100. The rear mounting sleeve 81 is arranged at the rear end of the lower plate 500. It can be understood that the mounting tower 100 can be a sheet metal part, so that the mounting tower 100 can have good structural strength and light weight, facilitating the lightweight requirement of the auxiliary frame assembly 1000 and reducing production costs. The mounting tower 100 is provided with a front mounting sleeve 14, which can be connected to the vehicle body. The connection between the mounting tower 100 and the vehicle body is realized through the front mounting sleeve 14, which can ensure reliable connection and play a role in strengthening and guiding. The auxiliary frame assembly 1000 further includes a rear mounting sleeve 81. The front cross beam 300 is connected to the rear mounting sleeve 81 in the length direction (for example Figure 1The left and right sides of the mounting tower 100 are provided with rear mounting sleeves 81 connected with the upper surface of the lower plate 500, the mounting tower 100 is arranged at the front end of the lower plate 500, the rear mounting sleeves 81 are arranged at the rear end of the lower plate 500, and the rear mounting sleeves 81 can be connected with the vehicle body. Thus, by connecting the mounting tower 100 and the rear mounting sleeves 81 with the vehicle body, the connection reliability of the subframe assembly 1000 and the vehicle body can be improved, and the connection reliability is ensured.

[0098] In some embodiments of the present application, as shown in Figures 4-6 The mounting tower 100 includes a first support 11, a second support 12, and a sealing plate 13. The first support 11 and the second support 12 are opposite to each other in the front-rear direction of the vehicle and are connected with each other. The sealing plate 13 is located at the lower side of the first support 11 in the up-down direction of the vehicle and is connected with the first support 11 and the second support 12. The end (for example, the upper end shown in Figure 4 The end of the first support 11 and the second support 12 away from the sealing plate 13 (for example, the upper end shown in

[0099] At the same time, the mounting tower 100 composed of the first support 11, the second support 12, and the sealing plate 13 can improve the structural strength of the mounting tower 100 and make the expandability of the mounting tower 100 higher. Different structural settings can be achieved, for example, the cross section of the mounting tower 100 can be adjusted by connecting the first support 11 and the second support 12 to meet different attribute targets and arrangement requirements, and the problem that the mounting tower 100 is affected by the process limitation in the related art to implement the platformization and generalization scheme of the subframe assembly 1000 is solved, so that the model requirements of different vehicles can be met.

[0100] In addition, as shown in Figures 4-6 The sealing plate 13 and the first support 11 are an integral piece, which can avoid the problem that the sealing plate 13 is prone to cracking when being welded to the first support 11, and can reduce welding deformation and welding amount, effectively improve production reliability, and have better fatigue performance. Since the number of welds is reduced, the subframe assembly 1000 can be lightweighted, the assembly process between the sealing plate 13 and the first support 11 can be reduced, the production process is simplified, the manufacturing cost is saved, and the production efficiency is improved.

[0101] In some embodiments, the mounting tower 100 is a sheet metal piece, so that the mounting tower 100 can have better structural strength and be lightweight, facilitating the lightweighting of the subframe assembly 1000 and reducing production costs.

[0102] In some embodiments of the present application, as shown in Figures 4-6As shown, the first support 11 is provided with a avoiding part 111 which is recessed towards the second support 12, or the second support 12 is provided with a avoiding part 111 which is recessed towards the first support 11, the avoiding part 111 can avoid other structures, for example, the avoiding part 111 can avoid the driving shaft, meet the required avoiding demand, avoid interference, and ensure compact structure.

[0103] In some embodiments of the present application, as shown in Figures 1-3 As shown, the first support 11 and the second support 12 are connected with the front mounting sleeve 14 at the end away from the sealing plate 13, the front mounting sleeve 14 can be connected with the vehicle body, the connection of the mounting tower 100 and the vehicle body is realized through the front mounting sleeve 14, which can ensure reliable connection and play a role in strengthening and guiding.

[0104] In some embodiments, the first support 11 and the second support 12 are welded with the front mounting sleeve 14, which ensures reliable connection of the first support 11 and the second support 12 with the front mounting sleeve 14, thereby ensuring reliable connection of the mounting tower 100 with the vehicle body and reducing production cost.

[0105] In some embodiments of the present application, the first support 11 and the second support 12 are welded, which ensures reliable connection of the first support 11 and the second support 12, improves the overall stability of the mounting tower 100, and reduces production cost; or the mounting tower 100 is a one-piece, in other words, the first support 11, the second support 12 and the sealing plate 13 can be a one-piece, which is simple to manufacture, has high connection strength, reduces assembly process, and has high production efficiency.

[0106] In some embodiments, the first support 11 and the second support 12 are formed by single-layer sheet metal stamping, and the first support 11 and the second support 12 are connected by tailor welding, which ensures reliable connection, high structural strength, simple structure and easy processing and manufacturing.

[0107] In some embodiments, the mounting tower 100 can be a casting, compared with the round pipe in the related art, the mounting tower 100 of the casting can realize a larger cross section, which is convenient to adjust the cross section of the mounting tower 100 in processing and manufacturing, and can meet different attribute targets and arrangement requirements.

[0108] In some embodiments, the mounting tower 100 can be an aluminum alloy forging, which has good structural strength, is easy to process into a complex shape, can meet the demand of different processing cross sections, and is light in weight, which is convenient to realize the lightweight demand.

[0109] In some embodiments of the present application, as shown in Figures 4-6As shown, the sealing plate 13 is provided with a water leakage hole 131, through which the accumulated water entering the mounting tower 100 can be effectively discharged, preventing the inside of the mounting tower 100 from being damp and corroded, and being beneficial to prolong the service life of the mounting tower 100.

[0110] In some embodiments of the present application, as shown in Figures 4-6 As shown, the first support 11 includes a first body portion 112, a first flange 113 and a second flange 114, the first flange 113 and the second flange 114 are connected with both ends of the first body portion 112 in the width direction, and the first flange 113 and the second flange 114 are bent towards the second support 12, the first flange 113 and the second flange 114 are connected with the second support 12, one end of the first body portion 112 in the length direction is connected with the sealing plate 13, the connection of the first support 11 with the second support 12 and the sealing plate 13 can be realized, and the structural strength of the first support 11 is high, which is beneficial to the connection of the first support 11 with the second support 12 and improves the connection strength, so as to ensure the structural strength of the mounting tower 100, and the structure of the first support 11 is simple, which is beneficial to processing and manufacturing.

[0111] In some embodiments, as shown in Figures 4-7 As shown, the second support 12 includes a second body portion 121, a third flange 122 and a fourth flange 123, the third flange 122 and the fourth flange 123 are connected with both ends of the second body portion 121 in the width direction, and the third flange 122 and the fourth flange 123 are bent towards the first support 11, the third flange 122 and the fourth flange 123 are connected with the first support 11, one end of the second body portion 121 in the length direction is connected with the sealing plate 13, the connection of the second support 12 with the first support 11 and the sealing plate 13 can be realized, and the structural strength of the second support 12 is high, which is beneficial to the connection of the second support 12 with the first support 11 and improves the connection strength, so as to ensure the structural strength of the mounting tower 100, and the structure of the second support 12 is simple, which is beneficial to processing and manufacturing.

[0112] In some embodiments, the mounting tower 100 is welded with the front cross beam 300, ensuring the reliable connection of the mounting tower 100 with the front cross beam 300, improving the overall strength and stiffness of the subframe assembly 1000, and reducing the production cost.

[0113] In some embodiments, the mounting tower 100 is welded with the lower plate 500, ensuring the reliable connection of the mounting tower 100 with the lower plate 500, improving the overall strength and stiffness of the subframe assembly 1000, and reducing the production cost.

[0114] In some embodiments, as shown in Figures 1-3As shown, the two mounting towers 100 are symmetrically arranged in the left-right direction of the front cross beam 300, facilitating the machining and manufacturing of the mounting tower, reducing the design and machining complexity of the mounting tower 100, and reducing the production cost.

[0115] In some embodiments, as shown in Figures 1-3 As shown, the auxiliary frame assembly 1000 further comprises a rear mounting sleeve 81, and the two sides of the front cross beam 300 in the length direction are provided with the rear mounting sleeve 81. The rear mounting sleeve 81 is connected with the upper surface of the lower plate 500. The mounting tower 100 is arranged at the front end of the lower plate 500, and the rear mounting sleeve 81 is arranged at the rear end of the lower plate 500. The rear mounting sleeve 81 can be connected with the vehicle body. Thus, by connecting the mounting tower 100 and the rear mounting sleeve 81 with the vehicle body respectively, the connection reliability of the auxiliary frame assembly 1000 and the vehicle body can be improved, and the connection reliability is ensured.

[0116] In some embodiments of the present application, as shown in Figure 2 and Figure 8 As shown, the auxiliary frame assembly 1000 further comprises a reinforcing plate 400. The reinforcing plate 400 is arranged between the upper plate 600 and the lower plate 500. The upper and lower end surfaces of the reinforcing plate 400 are respectively connected with the upper plate 600 and the lower plate 500. The reinforcing plate 400 extends in the front-rear direction of the vehicle. The front and rear sections of the reinforcing plate 400 are respectively connected with the mounting tower 100 and the rear mounting sleeve 81.

[0117] The reinforcing plate 400 can realize the force transmission path of the mounting tower 100-reinforcing plate 400-rear mounting sleeve 81, and increase the force transmission effect of the mounting tower 100 and the rear mounting sleeve 81. After the auxiliary frame assembly 1000 is connected with the vehicle body, the mounting tower 100 and the rear mounting sleeve 81 are both connected with the vehicle body. When the vehicle is impacted at different positions, for example, the auxiliary frame assembly 1000 is installed at the front of the vehicle, and the front end of the vehicle is impacted, the vehicle body can transmit part of the impact force to the lower plate 500 and the reinforcing plate 400 through the mounting tower 100, and then to the rear mounting sleeve 81; or the rear end of the vehicle is impacted, and the vehicle body can transmit part of the impact force to the lower plate 500 and the reinforcing plate 400 through the rear mounting sleeve 81, and then to the mounting tower 100. The impact force suffered by the vehicle can be dispersed, and the reinforcing plate 400 can increase the ability to absorb the impact force of the vehicle, better absorbing the impact force when the vehicle is impacted, and protecting the passengers in the vehicle.

[0118] It should be noted that the length direction, width direction and thickness direction of the reinforcing plate 400 are the length direction, width direction and thickness direction of the reinforcing plate 400 itself, and not the up-down direction, front-rear direction or left-right direction of the vehicle.

[0119] The upper plate 600 is arranged on the upper side of the lower plate 500, the reinforcing plate 400 is arranged between the upper plate 600 and the lower plate 500, and the upper plate 600 is welded to the upper end face of the reinforcing plate 400. Specifically, the upper plate 600 is arranged on the upper side of the lower plate 500, and the upper plate 600 is arranged in a spaced manner with the lower plate 500, and the upper plate 600 is connected with the reinforcing plate 400, so that the compactness of the subframe assembly 1000 can be ensured, and the overall strength and dynamic stiffness of the subframe assembly 1000 can be improved.

[0120] In some embodiments of the present application, as shown in Figure 8 At least one end face of the reinforcing plate 400 in the thickness direction is provided with a reinforcing groove 44, and the reinforcing groove 44 extends along the length direction of the reinforcing plate 400. The weight of the reinforcing plate 400 can be reduced to a certain extent while maintaining the strength of the reinforcing plate 400, thereby reducing the overall weight of the subframe assembly 1000, and further reducing the overall weight of the vehicle, achieving lightweight of the vehicle, and reducing energy consumption of the vehicle.

[0121] In some embodiments of the present application, as shown in Figure 8 The reinforcing plate 400 is provided with a weight-reducing hole 45, and the weight-reducing hole 45 penetrates through the reinforcing plate 400 in the thickness direction of the reinforcing plate 400. The weight of the reinforcing plate 400 can be reduced by setting the weight-reducing hole 45, thereby reducing the overall weight of the subframe assembly 1000, and further reducing the overall weight of the vehicle, achieving lightweight of the vehicle, and reducing energy consumption of the vehicle. At the same time, the force transmission path on the reinforcing plate 400 can be changed, and the energy absorption effect of the reinforcing plate 400 can be increased.

[0122] Further, the weight-reducing hole 45 is a countersunk hole and / or a tapered hole. It can be understood that the weight-reducing hole 45 is a countersunk hole; or the weight-reducing hole 45 is a tapered hole; or the weight-reducing hole 45 is a countersunk hole and a tapered hole. The stress at the edge of the weight-reducing hole 45 can be dispersed, the risk of stress concentration at the edge of the weight-reducing hole 45 and other problems can be reduced, and the structural strength of the weight-reducing hole 45 can be increased.

[0123] Further, the weight-reducing hole 45 is a plurality of weight-reducing holes 45, and the plurality of weight-reducing holes 45 are arranged in a spaced manner along the length direction of the reinforcing plate 400. The force transmission path on the reinforcing plate 400 can be changed at multiple positions in the length direction of the reinforcing plate 400, and the energy absorption effect of the reinforcing plate 400 can be increased. Further, the weight of the reinforcing plate 400 can be further reduced, thereby further reducing the overall weight of the subframe assembly 1000, and further reducing the overall weight of the vehicle, achieving lightweight of the vehicle, and reducing energy consumption of the vehicle.

[0124] In some embodiments of the present application, as shown in Figure 2 and Figure 8As shown, the reinforcing plate 400 includes a plate body 41 and an upper flange 42, the lower end surface of the plate body 41 is connected with the upper end surface of the lower plate 500, the upper end surface of the plate body 41 is connected with the lower end surface of the upper plate 600, the front end of the plate body 41 is connected with the mounting tower 100, and the rear end of the plate body 41 is connected with the rear mounting sleeve 81. The plate body 41 can realize the connection of the reinforcing plate 400 with the upper plate 600, the lower plate 500, the mounting tower 100 and the rear mounting sleeve 81, realize the force transmission between the upper plate 600, the lower plate 500, the mounting tower 100 and the rear mounting sleeve 81, and when the vehicle is hit, the upper plate 600, the lower plate 500, the mounting tower 100 and the rear mounting sleeve 81 can disperse and absorb the impact suffered by the vehicle, effectively disperse and absorb the impact energy, and protect the passengers on the vehicle.

[0125] Meanwhile, the upper end of the plate body 41 is provided with the upper flange 42, the upper surface of the upper flange 42 abuts against the upper plate 600, which can increase the contact area of the reinforcing plate 400 with the upper plate 600, ensure the welding effect of the upper flange 42 with the upper plate 600, and increase the stability of the connection of the upper plate 600 with the reinforcing plate 400.

[0126] In some embodiments of the present application, as shown in Figure 8 As shown, the reinforcing plate 400 further includes a lower flange 43, the lower end of the plate body 41 is provided with the lower flange 43, and the lower surface of the lower flange 43 abuts against the lower plate 500. The contact area of the reinforcing plate 400 with the lower plate 500 can be increased, the lower plate 500 can be welded and connected with the reinforcing plate 400, the lower flange 43 can ensure the welding effect of the reinforcing plate 400 with the upper plate 600, and the stability of the connection of the upper plate 600 with the reinforcing plate 400 can be increased.

[0127] In some embodiments of the present application, as shown in Figure 2 and Figure 8 As shown, the upper plate 600 is provided with a first stabilizer bar mounting point 61, and the upper flange 42 is provided with a second stabilizer bar mounting point 46, the first stabilizer bar mounting point 61 and the second stabilizer bar mounting point 46 are both used for mounting the stabilizer bar of the vehicle, and the second stabilizer bar mounting point 46 is oppositely arranged with the first stabilizer bar mounting point 61 in the up-down direction. Specifically, the stabilizer bar of the vehicle, also commonly known as the anti-roll bar or transverse stabilizer bar, is a component installed in the suspension system of the vehicle, which is used to improve the stability of the vehicle when turning, prevent the body from tilting or sliding sideways, and roll over. The oppositely arranged first stabilizer bar mounting point 61 and second stabilizer bar mounting point 46 in the up-down direction can ensure that the stabilizer bar can be stably connected to the subframe assembly 1000, ensure that the stabilizer bar can play a role, reduce the inclination of the vehicle body when turning, and thus reduce the risk of lateral overturning of the vehicle, and improve the driving safety.

[0128] Meanwhile, the second stabilizer bar mounting point 46 is arranged on the upper flange 42, which can further fix the stabilizer bar and increase the reliability of the position of the stabilizer bar.

[0129] In some embodiments of the present invention, such as Figures 1-3 As shown, there are two body connecting assemblies 800, which are respectively located on the left and right sides of the lower plate 500 (e.g., Figure 1 The body connection assembly 800 connects the lower plate 500 to the vehicle body (shown in the left and right directions) and is connected to both ends of the lower plate 500 and the upper surface of the lower plate 500. This increases the force transmission path between the vehicle subframe assembly 1000 and the vehicle body, allowing the impact force to be dispersed to multiple locations on the vehicle when it is subjected to an impact, thereby increasing the vehicle's energy absorption effect. Each body assembly includes a mounting tower 100 and a rear mounting sleeve 81. The mounting tower 100 is located at the front end of the lower plate 500, and the rear mounting sleeve 81 is located at the rear end of the lower plate 500.

[0130] like Figures 1-3 As shown, there are two reinforcing plates 400. The two reinforcing plates 400 are respectively located at the left and right ends of the lower plate 500 and connected to the upper surface of the lower plate 500. The reinforcing plates 400 extend along the front and rear direction of the vehicle. The front and rear ends of the reinforcing plates 400 are respectively connected to the mounting tower 100 and the rear mounting sleeve 81 in the same body connection assembly 800. The reinforcing plate 400 enables the force transmission path from the mounting tower 100 to the reinforcing plate 400 and then to the rear mounting sleeve 81, increasing the force transmission effect of the mounting tower 100 and the rear mounting sleeve 81. After the subframe assembly 1000 is connected to the vehicle body, both the mounting tower 100 and the rear mounting sleeve 81 are connected to the vehicle body. When the vehicle is impacted at different locations, for example, if the subframe assembly 1000 is mounted at the front of the vehicle and the front end of the vehicle is impacted, the vehicle body can transfer part of the impact force through the mounting tower 100 to the lower plate 500 and the reinforcing plate 400, and then to the rear mounting sleeve 81; or if the rear end of the vehicle is impacted, the vehicle body can transfer part of the impact force through the rear mounting sleeve 81 to the lower plate 500 and the reinforcing plate 400, and then to the mounting tower 100. It can disperse the impact force suffered by the vehicle. The reinforcement plate 400 can increase the ability to absorb the impact force of the vehicle, improve the overall strength and rigidity of the subframe assembly 1000, and better absorb the impact force when the vehicle is impacted, thus protecting the safety of the occupants inside the vehicle.

[0131] In this embodiment, the thickness direction of the reinforcing plate 400 is the direction between the end faces of the reinforcing plate 400 that are close to each other and the end faces that are far from each other.

[0132] In some embodiments of the present invention, such as Figures 1-3As shown, the upper plate 600 is two, and the two upper plates 600 are arranged in the left-right direction and are connected with the two body connecting assemblies 800 and the two reinforcing plates 400. The upper plate 600 is arranged on both sides of the front beam 300 in the length direction, and each upper plate 600 is connected with the front beam 300, the body connecting assembly 800 and the reinforcing plate 400 on the same side, which can ensure the compactness of the subframe assembly 1000 and improve the overall strength and dynamic stiffness of the subframe assembly 1000.

[0133] In some embodiments of the present application, as shown in Figure 2 As shown, the lower plate 500 includes a plate member 51 and a steering gear mounting sleeve 52, the upper surface of the plate member 51 is connected with the body connecting assembly 800 and the reinforcing plate 400; one end of the steering gear mounting sleeve 52 in the axial direction is connected with the plate member 51, and the other end extends upward and abuts against the upper plate 600, and the steering gear mounting sleeve 52 is arranged between the two reinforcing plates 400. The upper end of the steering gear mounting sleeve 52 is connected with the upper plate 600, which can improve the connection strength of the steering gear mounting sleeve 52, and the upper plate 600 can provide a mounting surface, which facilitates the connection of the steering gear with the steering gear mounting sleeve 52, improves the support strength, and thus realizes the connection of the steering gear with the subframe assembly 1000, and ensures the reliable connection of the steering gear with the subframe assembly 1000.

[0134] In some embodiments of the present application, as shown in Figure 2 and Figure 8 As shown, the upper end of the reinforcing plate 400 is provided with an avoiding groove 47, which can avoid the upper plate 600, so as to avoid the arc surface area of the upper plate 600 not being fitted with the reinforcing plate 400 due to the manufacturing deviation of the profile of the upper plate 600 and the reinforcing plate 400, and to avoid causing abnormal sound problems. In addition, the weight reduction effect of the reinforcing plate 400 can be further realized, thereby reducing the overall weight of the subframe assembly 1000, and further reducing the overall weight of the vehicle, realizing the lightweight of the vehicle, and reducing the energy consumption of the vehicle. At the same time, the force transmission path on the reinforcing plate 400 can be changed, and the energy absorption effect of the reinforcing plate 400 can be increased.

[0135] In other embodiments, the upper plate 600 can be provided with a limiting protrusion protruding toward the lower plate 500, and the avoiding groove 47 is used to accommodate the limiting protrusion. The contact area of the reinforcing plate 400 with the upper plate 600 is larger, which can better position the upper plate 600, facilitate the assembly of the upper plate 600 with the reinforcing plate 400, the front beam 300, the rear beam 700 and the body connecting assembly 800, and optimize the assembly efficiency of the subframe assembly 1000.

[0136] In some embodiments of the present application, as shown in Figure 2As shown, the lower plate 500 further comprises control arm mounting points 53, two of which are provided on the sides of the two reinforcing plates 400 away from each other for mounting the control arms of the vehicle. The control arms are guiding and force transmission elements of the suspension system of the vehicle, connecting the suspension system of the wheels and the vehicle body. The upper plate 600 can provide a mounting surface for the connection of the control arms with the control arm mounting points 53, can improve the support strength, so as to realize the connection of the control arms with the subframe assembly 1000, and ensure the reliable connection of the control arms with the subframe assembly 1000.

[0137] As shown in the drawings, Figure 2 The reinforcing plate 400 is arranged around the control arm mounting point 53, which can disperse the impact force suffered by the vehicle without affecting the installation of components such as the control arms and the steering gear, can increase the ability to absorb the impact force of the vehicle, can better absorb the impact force when the vehicle is subjected to impact, and can protect the passengers in the vehicle.

[0138] In one specific embodiment, the subframe assembly 1000 is a front subframe. Of course, in addition to being a front subframe, when the power assembly of the vehicle is rear-mounted, the subframe assembly 1000 of the present embodiment can also be a rear subframe located at the rear of the vehicle body.

[0139] The vehicle according to the embodiment of the present application comprises the above-mentioned subframe assembly 1000.

[0140] The vehicle according to the embodiment of the present application is provided with the subframe assembly 1000, the front cross beam 300 and the rear cross beam 700 are both connected to the upper side of the lower plate 500, the front cross beam 300 and the rear cross beam 700 are both extended in the left-right direction and are spaced apart in the front-rear direction, and the plurality of upper plates 600 are arranged at the left and right ends of the lower plate 500, and the front and rear ends of each upper plate 600 are connected with the front cross beam 300 and the rear cross beam 700 respectively, so as to form a substantially quadrilateral frame structure, which is simple in structure and high in integration. It can effectively improve the torsional and bending resistance, enhance the structural strength and overall rigidity of the subframe assembly 1000, thereby improving the modal frequency, avoiding resonance between the subframe assembly 1000 and the engine or motor, and effectively suppressing the problem of accelerating roar or motor howling. It can also avoid stress concentration, prolong the service life, and provide more stable support for the steering gear, suspension and other components, thereby improving the reliability and maneuverability of the vehicle.

[0141] In the description of the specification, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0142] Although embodiments of the application have been shown and described, it will be appreciated that those skilled in the art can make various changes, modifications, substitutions and alterations thereto without departing from the principles and scope of the application, which are defined by the claims and their equivalents.

Claims

1. A subframe assembly comprising: A vehicle frame comprising: a lower plate; a front cross beam located above and connected to the lower plate, the front cross beam extending in a left-right direction of the vehicle; a rear cross beam located above and connected to the lower plate, the rear cross beam being spaced apart from the front cross beam in a front-rear direction of the vehicle, the rear cross beam extending in the left-right direction of the vehicle; a plurality of upper plates located above and connected to the lower plate, each of the upper plates being located at a left or right end of the lower plate, each of the upper plates being connected to the front cross beam and the rear cross beam at a front end and a rear end thereof, a recess is formed on an upper surface of the lower plate, the recess extending in the left-right direction of the vehicle and being opposite to the rear cross beam, a protrusion is formed on a lower surface of the lower plate and being opposite to the recess, the protrusion extending in the left-right direction of the vehicle, a battery of the vehicle being located behind the lower plate, the protrusion being used to lift the vehicle when a protrusion is formed on a road surface on which the vehicle travels.

2. The subframe assembly of claim 1, wherein a first cavity is defined between the front cross beam and the lower plate; and / or, a second cavity is defined between the rear cross beam and the lower plate; and / or, a third cavity is defined between the upper plates and the lower plate.

3. The subframe assembly of claim 1, wherein The lower plate is a one-piece.

4. The subframe assembly of claim 1, wherein, The lower plate has an avoiding hole formed therethrough, the avoiding hole being located between the front cross beam and the rear cross beam in the front-rear direction and between the upper plates in the left-right direction.

5. The subframe assembly of claim 1, wherein The front cross beam has a mounting groove, and the vehicle frame assembly further comprises: a suspension box, at least a portion of the suspension box being located in the mounting groove, the suspension box comprising a body having a first suspension mounting point, the body being open at an end opposite to the first suspension mounting point in a top-bottom direction of the vehicle and having a mounting flange extending towards a center of the suspension box, the body being connected to the front cross beam, and the mounting flange being connected to the lower plate.

6. The subframe assembly of claim 5, wherein The mounting flange is a plurality of mounting flanges, the plurality of mounting flanges being spaced apart in a circumferential direction of the body.

7. The subframe assembly of claim 6, wherein Any two adjacent mounting flanges have a connecting groove therebetween, the connecting groove extending to the body.

8. The subframe assembly of claim 5, wherein, The body comprises: a top plate having the first suspension mounting point; a side plate extending in a length direction of the top plate, the side plate having the mounting flange at a lower end thereof and being connected to an outer edge of the top plate at an upper end thereof.

9. The subframe assembly of claim 8, wherein, The side plate has a notch at one side thereof in the front-rear direction of the vehicle.

10. The subframe assembly of claim 5, wherein, The lower plate has a second suspension mounting point located opposite to the first suspension mounting point.

11. The subframe assembly of claim 5, wherein, The front cross beam comprises: a first plate located above and spaced apart from the lower plate, the first plate having a fitting groove; A second plate is provided in two pieces and extends in the left-right direction. Upper ends of the two second plates are connected to the two ends of the first plate in the front-rear direction of the vehicle. Lower ends of the two second plates are connected to the lower plate. One of the second plates has a fitting hole that communicates with the fitting groove. The fitting groove and the fitting hole form the mounting groove. The first plate is located above the suspension box and is connected to the suspension box. The second plate in which the fitting hole is formed is connected to the suspension box.

12. The subframe assembly of claim 1, wherein, Further comprising: A vehicle body connecting assembly is connected to the upper surface of the lower plate. The vehicle body connecting assembly includes a mounting tower and a rear mounting sleeve. The mounting tower is arranged at the front end of the lower plate. The front cross beam is connected to the mounting tower on both sides in the length direction. The rear mounting sleeve is arranged at the rear end of the lower plate.

13. The subframe assembly of claim 12, wherein, The mounting tower includes: A first support; A second support, the first support and the second support are opposite and connected to each other in the front-rear direction of the vehicle; A sealing plate is located on the lower side of the first support in the up-down direction of the vehicle and is connected to the first support and the second support. The end of the first support and the second support away from the sealing plate is connected to the vehicle body. The sealing plate and the first support are an integral part.

14. The subframe assembly of claim 13, wherein, The first support is provided with a recessed part towards the second support; Or, the second support is provided with a recessed part towards the first support.

15. The subframe assembly of claim 13, wherein, The end of the first support and the second support away from the sealing plate is connected to the front mounting sleeve for connecting to the vehicle body.

16. The subframe assembly of claim 13, wherein, The first support and the second support are connected by welding; Or, the mounting tower is an integral part.

17. The subframe assembly of claim 13, wherein, The sealing plate is provided with a water leakage hole.

18. The subframe assembly of claim 13, wherein, The first support includes a first body part, a first flange and a second flange. The first flange and the second flange are connected to both ends of the first body part in the width direction and are bent towards the second support. The first flange and the second flange are connected to the second support. One end of the first body part in the length direction is connected to the sealing plate. And / or, the second support includes a second body part, a third flange and a fourth flange. The third flange and the fourth flange are connected to both ends of the second body part in the width direction and are bent towards the first support. The third flange and the fourth flange are connected to the first support. One end of the second body part in the length direction is connected to the sealing plate.

19. The subframe assembly of claim 13, wherein, The lower end of the first support and the second support is connected to the lower plate. The first support and the second support are connected to the end surface of the front cross beam at both ends in the length direction.

20. The subframe assembly of claim 13, wherein, The first support and the second support are arranged in the front-rear direction of the lower plate.

21. The subframe assembly of claim 12, wherein, Further comprising: A reinforcing plate is arranged between the upper plate and the lower plate. The upper and lower end surfaces of the reinforcing plate are connected to the upper plate and the lower plate respectively. The reinforcing plate extends in the front-rear direction of the vehicle. The front and rear sections of the reinforcing plate are connected to the mounting tower and the rear mounting sleeve respectively.

22. The subframe assembly of claim 21, wherein At least one end surface of the reinforcing plate in the thickness direction is provided with a reinforcing groove. The reinforcing groove extends in the length direction of the reinforcing plate.

23. The subframe assembly of claim 21, wherein, The reinforcing plate is provided with a weight-reducing hole penetrating through the reinforcing plate along the thickness direction of the reinforcing plate.

24. The subframe assembly of claim 23, wherein, The weight-reducing hole is a countersunk hole and / or a tapered hole. The weight-reducing hole is a plurality of weight-reducing holes, and the plurality of weight-reducing holes are arranged at intervals along the length direction of the reinforcing plate.

25. The subframe assembly of claim 21, wherein, The reinforcing plate comprises: a plate body, a lower end surface of the plate body being connected to an upper end surface of the lower plate, an upper end surface of the plate body being connected to a lower end surface of the upper plate, a front end of the plate body being connected to the mounting tower, and a rear end of the plate body being connected to the rear mounting sleeve; an upper flange, the upper end of the plate body being provided with the upper flange, and an upper surface of the upper flange abutting against the upper plate.

26. The subframe assembly of claim 25, wherein, The reinforcing plate further comprises: a lower flange, the lower end of the plate body being provided with the lower flange, and a lower surface of the lower flange abutting against the lower plate.

27. The subframe assembly of claim 25, wherein, The upper plate is provided with a first stabilizer bar mounting point, and the upper flange is provided with a second stabilizer bar mounting point, the first stabilizer bar mounting point and the second stabilizer bar mounting point being used for mounting a stabilizer bar of the vehicle, and the second stabilizer bar mounting point is arranged opposite to the first stabilizer bar mounting point in the up-down direction.

28. The subframe assembly of claim 21, wherein, The vehicle body connecting assembly is two, and the two vehicle body connecting assemblies are respectively arranged at left and right ends of the lower plate and connected to the upper surface of the lower plate, the reinforcing plate is two, and the two reinforcing plates are respectively arranged at left and right ends of the lower plate and connected to the upper surface of the lower plate, and the front and rear ends of the reinforcing plate are respectively connected to the mounting tower and the rear mounting sleeve in the same vehicle body connecting assembly.

29. The subframe assembly of claim 28, wherein, The upper plate is two, and the two upper plates are arranged at intervals in the left-right direction and connected to the two vehicle body connecting assemblies and the two reinforcing plates.

30. The subframe assembly of claim 21, wherein, The lower plate comprises: a plate member, an upper surface of the plate member being connected to the vehicle body connecting assembly and the reinforcing plate; a steering gear mounting sleeve, one end of the steering gear mounting sleeve in the axial direction being connected to the plate member, the other end extending upward and abutting against the upper plate, and the steering gear mounting sleeve being arranged between the two reinforcing plates.

31. The subframe assembly of claim 21, wherein, The upper end of the reinforcing plate is provided with a avoiding groove.

32. The subframe assembly of claim 21, wherein, The lower plate further comprises: control arm mounting points, the control arm mounting points being two, the two control arm mounting points being arranged on sides of the two reinforcing plates away from each other and used for mounting a control arm of the vehicle.

33. A vehicle characterized by comprising: The vehicle body comprises a plurality of subframe assemblies according to any one of claims 1-32.

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