Front auxiliary frame and vehicle

Abstract

The utility model discloses a front sub-frame and a vehicle. The front sub-frame comprises a frame cross beam, a front sub-frame and a rear sub-frame, the two frame longitudinal beams are distributed in a spaced mode in the transverse direction of the vehicle, the frame cross beam is connected between the two frame longitudinal beams, each frame longitudinal beam is arranged to obliquely extend relative to the longitudinal direction of the vehicle from back to front, and the two frame longitudinal beams incline in the direction away from each other from back to front; at least part of the frame longitudinal beam is constructed to obliquely extend upwards from back to front, and the front end of the frame longitudinal beam is higher than the rear end of the frame longitudinal beam. According to the front auxiliary frame, the two frame longitudinal beams incline in the direction away from each other from back to front, impact force generated when a vehicle collides in an offset mode can be absorbed and dispersed, and the reliability of protecting a vehicle body structure and passenger safety is effectively improved; and the front end of the frame longitudinal beam is higher than the rear end of the frame longitudinal beam, so that the mounting reliability of the frame longitudinal beam and the working reliability of the frame longitudinal beam can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a front subframe and a vehicle with the front subframe. Background Art

[0002] At present, the automotive industry is in an era of accelerating transformation. Especially in China, the automotive industry is developing rapidly with increasingly fierce competition. The trend of new energy vehicles is surging forward. From traditional fuel vehicles to mild hybrid vehicles, plug-in hybrid vehicles, and pure electric vehicles, automotive safety has always attracted much attention. Automotive safety includes passive safety performance and active safety performance. Among them, passive safety includes various situations such as frontal collision, side collision, and offset collision. Existing vehicles have insufficient ability to absorb the impact force during vehicle offset collision, and there is room for improvement. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a front subframe. The front subframe can not only absorb and disperse the impact force during the frontal or side collision of the vehicle, but also absorb and disperse the impact force during the offset collision of the vehicle. And by making the front end of the frame longitudinal beam higher than the rear end of the frame longitudinal beam, the reliability of installing the frame longitudinal beam and the reliability of the frame longitudinal beam working can be improved.

[0004] The front subframe according to an embodiment of the utility model includes: a frame cross beam; two frame longitudinal beams, the two frame longitudinal beams are spaced apart along the vehicle transverse direction, the frame cross beam is connected between the two frame longitudinal beams, each frame longitudinal beam is arranged to extend obliquely relative to the vehicle longitudinal direction from the rear to the front, and the two frame longitudinal beams are configured to incline away from each other from the rear to the front; wherein, at least part of the frame longitudinal beam is configured to extend obliquely upward from the rear to the front, and make the front end of the frame longitudinal beam higher than the rear end of the frame longitudinal beam.

[0005] The front subframe according to an embodiment of the utility model can absorb and disperse the impact force during the frontal or side collision of the vehicle by arranging the frame cross beam and the frame longitudinal beams, and by configuring the two frame longitudinal beams to incline away from each other from the rear to the front, the impact force during the offset collision of the vehicle can be absorbed and dispersed, and the area for the front subframe to bear the impact force during the side collision can be increased, effectively improving the reliability of protecting the vehicle body structure and passenger safety. And by making the front end of the frame longitudinal beam higher than the rear end of the frame longitudinal beam, the tire envelope and various components in the power train can be avoided, and the reliability of installing the frame longitudinal beam and the reliability of the frame longitudinal beam working can be improved.

[0006] According to the front subframe of some embodiments of the present utility model, the frame longitudinal beams include a front longitudinal beam section, a middle longitudinal beam section, and a rear longitudinal beam section distributed in the front-rear direction. The middle longitudinal beam section is connected between the front longitudinal beam section and the rear longitudinal beam section, and the middle longitudinal beam section is configured to extend obliquely upward from the rear to the front. Both the front longitudinal beam section and the rear longitudinal beam section extend along the vehicle longitudinal direction and the front longitudinal beam section is higher than the rear longitudinal beam section.

[0007] According to the front subframe of some embodiments of the present utility model, there are multiple frame cross beams. The multiple frame cross beams are connected between the two frame longitudinal beams and are spaced apart along the vehicle longitudinal direction. At least one frame cross beam is located between the front longitudinal beam sections of the two frame longitudinal beams, and / or at least one frame cross beam is located between the rear longitudinal beam sections of the two frame longitudinal beams.

[0008] According to the front subframe of some embodiments of the present utility model, there are three frame cross beams, namely a front cross beam, a middle cross beam, and a rear cross beam. The front cross beam, the middle cross beam, and the rear cross beam are sequentially spaced apart along the vehicle longitudinal direction; the front cross beam is connected between the front longitudinal beam sections of the two frame longitudinal beams, and both the middle cross beam and the rear cross beam are connected between the rear longitudinal beam sections of the two frame longitudinal beams.

[0009] According to the front subframe of some embodiments of the present utility model, both the front longitudinal beam section and the rear longitudinal beam section are provided with first vehicle body mounting points. The frame longitudinal beam is adapted to be connected to the vehicle body at the first vehicle body mounting points, and the number of the first vehicle body mounting points provided on the front longitudinal beam section is greater than the number of the first vehicle body mounting points provided on the rear longitudinal beam section.

[0010] According to the front subframe of some embodiments of the present utility model, it further includes rear side connection plates. There are two rear side connection plates, which are respectively and correspondingly connected to the rear ends of the rear longitudinal beam sections of the two frame longitudinal beams. The rear side connection plates are adapted to be connected to the corresponding rear longitudinal beam sections and the vehicle body at the same first vehicle body mounting point.

[0011] According to the front subframe of some embodiments of the present utility model, the height difference between the front longitudinal beam section and the rear longitudinal beam section is L, and it satisfies: 30 mm ≤ L ≤ 80 mm.

[0012] According to the front subframe of some embodiments of the present utility model, both the frame longitudinal beam and the frame cross beam include an upper plate and a lower plate. Both the upper plate and the lower plate are configured in a trough shape. The upper plate and the lower plate are buckled and connected to define an internal cavity, and a reinforcing plate is provided in the internal cavity.

[0013] The front subframe according to some embodiments of the present utility model further includes a front anti-collision beam, the front anti-collision beam is located at the front of the frame longitudinal beam, and an energy absorption box is provided between the front anti-collision beam and the front end of the frame longitudinal beam; and / or, the frame longitudinal beam is configured such that the front region is higher than the rear region.

[0014] The present utility model also proposes a vehicle.

[0015] The vehicle according to the embodiments of the present utility model is provided with the front subframe described in any one of the above.

[0016] The advantages of the vehicle and the above-mentioned front subframe over the prior art are the same and will not be elaborated here.

[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic structural diagram of a front subframe according to an embodiment of the present utility model;

[0020] Figure 2 is a side view of a front subframe according to an embodiment of the present utility model;

[0021] Figure 3 is a schematic cross-sectional view of a front subframe according to an embodiment of the present utility model.

[0022] Reference Signs:

[0023] Front subframe 100,

[0024] Frame longitudinal beam 1, First vehicle body mounting point 11, Front section of the longitudinal beam 17, Middle section of the longitudinal beam 18, Rear section of the longitudinal beam 19, Frame cross beam 2, Front cross beam 21, Middle cross beam 22, Rear cross beam 23, Rear side connecting plate 3, Second vehicle body mounting point 31, Upper plate 4, Lower plate 5, Internal cavity 6, Reinforcing plate 7, Front anti-collision beam 8, Energy absorption box 9, Bushing 10, Steering knuckle mounting point 13, Power assembly mounting system mounting point 14, Front mounting point of the lower control arm 15, Rear mounting point of the lower control arm 16. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Unless otherwise specified, the front-rear direction in this application is the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction is the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

[0029] The following refers to Figures 1-3 Describe the front subframe 100 according to an embodiment of the present utility model. By providing the frame cross member 2 and the frame longitudinal member 1, the impact force during a frontal or lateral collision of the vehicle can be absorbed and dispersed. Moreover, both frame longitudinal members 1 are configured to be inclined away from each other from the rear to the front, so as to absorb and disperse the impact force during an offset collision of the vehicle. In addition, by making the front end of the frame longitudinal member 1 higher than the rear end of the frame longitudinal member 1, the reliability of installing the frame longitudinal member 1 and the reliability of the frame longitudinal member 1 working can be improved.

[0030] As Figure 1As shown, the front subframe 100 according to an embodiment of the present utility model includes a frame cross beam 2 and two frame longitudinal beams 1.

[0031] Among them, the frame cross beam 2 extends along the vehicle width direction and can be used to absorb and disperse impact force when the vehicle has a frontal collision, so as to protect the vehicle body structure and passenger safety.

[0032] The two frame longitudinal beams 1 are spaced apart along the vehicle width direction. The frame cross beam 2 is connected between the two frame longitudinal beams 1. Each frame longitudinal beam 1 is arranged to extend obliquely relative to the vehicle longitudinal direction from the rear to the front, and the two frame longitudinal beams 1 are configured to incline away from each other from the rear to the front.

[0033] Specifically, the frame longitudinal beams 1 extend along the vehicle longitudinal direction and can be used to absorb and disperse impact force when the vehicle has a side collision, so as to protect the vehicle body structure and passenger safety. Two frame longitudinal beams 1 are provided on the front subframe 100, so that the impact force during a side collision of the vehicle can be absorbed and dispersed by the two frame longitudinal beams 1 together, and the reliability of protecting the vehicle body structure and passenger safety can be improved. And the two frame longitudinal beams 1 are spaced apart along the vehicle width direction, so that the impact force during a side collision of the vehicle can be absorbed and dispersed by the two frame longitudinal beams 1 simultaneously from two positions in the vehicle width direction, further improving the reliability of protecting the vehicle body structure and passenger safety.

[0034] At the same time, the frame cross beam 2 is connected between the two frame longitudinal beams 1, so that the two frame longitudinal beams 1 can be supported and connected by the frame cross beam 2, ensuring the accuracy of the installation positions of the two frame longitudinal beams 1 and improving the reliability of the work of the frame longitudinal beams 1. And the impact force can be transmitted between the two frame longitudinal beams 1 through the frame cross beam 2, so as to improve the reliability of absorbing and dispersing the impact force, that is, improve the reliability of protecting the vehicle body structure and passenger safety.

[0035] In addition, the frame longitudinal beams 1 are configured to be inclined relative to the vehicle longitudinal direction from the rear to the front, so that there is a certain included angle between the frame longitudinal beams 1 and the vehicle longitudinal direction. When the vehicle is subjected to an offset collision, the frame longitudinal beams 1 can be directly opposite to the impact force of the offset collision, and the impact force can be absorbed and dispersed by the frame longitudinal beams 1 from the direction directly opposite to the impact force, improving the effect of absorbing and dispersing the impact force of the offset collision, and then protecting the vehicle body structure and passenger safety. And the two frame longitudinal beams 1 are both configured to be inclined relative to the vehicle longitudinal direction from the rear to the front, so that the impact force during an offset collision of the vehicle can be absorbed and dispersed by the two frame longitudinal beams 1 together, improving the reliability of protecting the vehicle body structure and passenger safety.

[0036] Moreover, the two vehicle frame side members 1 are configured to incline away from each other from the rear to the front, i.e., the two vehicle frame side members 1 are in a V-shape, which can increase the area at the front part of the front subframe 100, that is, increase the area for the front subframe 100 to bear the impact force during a side collision, improve the effect of absorbing and dispersing the side impact force, and further improve the reliability of protecting the vehicle body structure and passenger safety.

[0037] Wherein, at least part of the vehicle frame side member 1 is configured to extend obliquely upward from the rear to the front, and the front end of the vehicle frame side member 1 is higher than the rear end of the vehicle frame side member 1.

[0038] Specifically, as Figure 2 shown, the vehicle frame side member 1 is arranged to extend along the longitudinal direction of the vehicle. By configuring at least part of the vehicle frame side member 1 to extend obliquely upward from the rear to the front, the height of at least part of the front end of the vehicle frame side member 1 can be made higher than the height of the rear end, and further, the height of the front end of the vehicle frame side member 1 connected to at least part of the front end of the vehicle frame side member 1 can be made higher than the height of the rear end of the vehicle frame side member 1 connected to at least part of the rear end of the vehicle frame side member 1, that is, the vehicle frame side member 1 can be made in a Z-shape to avoid the tire envelope and various components in the powertrain transmission system, prevent interference between the vehicle frame side member 1 and the tire envelope or various components in the powertrain transmission system, resulting in the inability to install the vehicle frame side member 1, and improve the reliability of installing the vehicle frame side member 1 and the reliability of the vehicle frame side member 1 working.

[0039] It should be noted that the height difference between the front end and the rear end of the vehicle frame side member 1 needs to be controlled within a certain range. If the height difference is too large, the height of the vehicle frame side member 1 will be too large, which is not conducive to the layout of the vehicle frame side member 1 on the vehicle. If the height difference is too small, there will be insufficient space to avoid the tire envelope or various components in the powertrain transmission system, resulting in interference between the vehicle frame side member 1 and the tire envelope or various components in the powertrain transmission system.

[0040] Thus, by providing the vehicle frame cross member 2, the impact force during a frontal collision of the vehicle can be absorbed and dispersed. By providing the vehicle frame side member 1, the impact force during a side collision of the vehicle can be absorbed and dispersed. The two vehicle frame side members 1 are spaced apart to improve the reliability of protecting the vehicle body structure and passenger safety. In addition, the two vehicle frame side members 1 are both configured to incline away from each other from the rear to the front to absorb and disperse the impact force during an offset collision of the vehicle, and can increase the area for the front subframe 100 to bear the impact force during a side collision. Moreover, the front end of the vehicle frame side member 1 is higher than the rear end of the vehicle frame side member 1, which can avoid the tire envelope and various components in the powertrain transmission system.

[0041] According to the front subframe 100 of the embodiment of the present utility model, by providing the frame cross beam 2 and the frame longitudinal beam 1, the impact force during a frontal or lateral collision of the vehicle can be absorbed and dispersed. Moreover, by configuring both frame longitudinal beams 1 to incline away from each other from the rear to the front, the impact force during an offset collision of the vehicle can be absorbed and dispersed, and the area for the front subframe 100 to bear the impact force during a lateral collision can be increased, effectively enhancing the reliability of protecting the body structure and passenger safety. In addition, by making the front end of the frame longitudinal beam 1 higher than the rear end of the frame longitudinal beam 1, the tire envelope and various components in the powertrain transmission system can be avoided, improving the reliability of installing the frame longitudinal beam 1 and the reliability of the frame longitudinal beam 1 in operation.

[0042] In some embodiments, the frame longitudinal beam 1 includes a front longitudinal beam section 17, a middle longitudinal beam section 18, and a rear longitudinal beam section 19 distributed in the front-rear direction. The middle longitudinal beam section 18 is connected between the front longitudinal beam section 17 and the rear longitudinal beam section 19, and the middle longitudinal beam section 18 is configured to extend obliquely upward from the rear to the front. Both the front longitudinal beam section 17 and the rear longitudinal beam section 19 extend along the vehicle longitudinal direction, and the front longitudinal beam section 17 is higher than the rear longitudinal beam section 19.

[0043] That is to say, as Figure 2 shown, the front longitudinal beam section 17 and the rear longitudinal beam section 19 can be connected by the middle longitudinal beam section 18, enabling the frame longitudinal beam 1 to be an integral body, enhancing the structural strength of the frame longitudinal beam 1 and the reliability of the frame longitudinal beam 1 in operation. Among them, by arranging the middle longitudinal beam section 18 between the front longitudinal beam section 17 and the rear longitudinal beam section 19, the front longitudinal beam section 17 can be connected to the front end of the middle longitudinal beam section 18, and the rear longitudinal beam section 19 can be connected to the rear end of the middle longitudinal beam section 18. Moreover, by configuring the middle longitudinal beam section 18 to extend obliquely upward from the rear to the front, and both the front longitudinal beam section 17 and the rear longitudinal beam section 19 extend along the vehicle longitudinal direction, the height of the front longitudinal beam section 17 can be higher than that of the rear longitudinal beam section 19, thereby avoiding the tire envelope and various components in the powertrain transmission system, preventing interference between the front longitudinal beam section 17 or the rear longitudinal beam section 19 and the tire envelope or various components in the powertrain transmission system, and thus avoiding interference between the frame longitudinal beam 1 and the tire envelope and various components in the powertrain transmission system, and further improving the reliability of installing the frame longitudinal beam 1 and the reliability of the frame longitudinal beam 1 in operation.

[0044] In some embodiments, there are multiple frame cross beams 2. The multiple frame cross beams 2 are connected between the two frame longitudinal beams 1 and are spaced apart along the vehicle longitudinal direction. At least one frame cross beam 2 is located between the front longitudinal beam sections 17 of the two frame longitudinal beams 1, and / or at least one frame cross beam 2 is located between the rear longitudinal beam sections 19 of the two frame longitudinal beams 1.

[0045] Specifically, the frame cross member 2 is used to absorb and disperse impact force during a frontal collision of the vehicle to protect the body structure and passenger safety. The number of the frame cross members 2 can be multiple, that is, the number of the frame cross members 2 can be two, three or more. Furthermore, the impact force during the frontal collision of the vehicle can be absorbed and dispersed by multiple frame cross members 2 together, and the reliability of protecting the body structure and passenger safety can be improved. And by connecting multiple frame cross members 2 between two frame longitudinal members 1, the front subframe 100 can be made into a whole to improve the overall structural strength of the front subframe 100, and at the same time, multiple frame cross members 2 can support and connect the two frame longitudinal members 1 to improve the accuracy of the installation position of the frame longitudinal members 1, and the impact force can be transmitted between the two frame longitudinal members 1 through the frame cross members 2 to improve the reliability of absorbing and dispersing the impact force.

[0046] Meanwhile, by distributing multiple frame cross members 2 at intervals along the longitudinal direction of the vehicle, the impact force during the frontal collision of the vehicle can be absorbed and dispersed from multiple positions by multiple frame cross members 2 together, and the reliability of absorbing and dispersing the impact force can be improved.

[0047] In addition, by arranging at least one frame cross member 2 between the front sections 17 of the two frame longitudinal members 1, one, two, three or more frame cross members 2 can be arranged between the front sections 17 of the two frame longitudinal members 1. Furthermore, at least one frame cross member 2 can support and connect the front sections 17 of the two frame longitudinal members 1. By arranging at least one frame cross member 2 between the rear sections 19 of the two frame longitudinal members 1, one, two, three or more frame cross members 2 can be arranged between the rear sections 19 of the two frame longitudinal members 1. Furthermore, at least one frame cross member 2 can support and connect the rear sections 19 of the two frame longitudinal members 1, which can ensure the accuracy of the installation positions of the two frame longitudinal members 1 and improve the reliability of the work of the frame longitudinal members 1.

[0048] In some embodiments, there are three frame cross members 2, which are a front cross member 21, a middle cross member 22 and a rear cross member 23 respectively, and the front cross member 21, the middle cross member 22 and the rear cross member 23 are distributed at intervals in sequence along the longitudinal direction of the vehicle.

[0049] Specifically, in Figure 1In the illustrated embodiment, the number of the frame crossbeams 2 is three, and the three frame crossbeams 2 are spaced apart longitudinally of the vehicle. Thus, the impact force during a frontal collision of the vehicle can be absorbed simultaneously from three positions by the three frame crossbeams 2, so as to improve the reliability of protecting the vehicle body structure and passenger safety. And the three frame crossbeams 2 are respectively a front crossbeam 21, a middle crossbeam 22 and a rear crossbeam 23. Thus, the impact force during a frontal collision of the vehicle can be absorbed and dispersed jointly by the front crossbeam 21, the middle crossbeam 22 and the rear crossbeam 23. Meanwhile, the front crossbeam 21, the middle crossbeam 22 and the rear crossbeam 23 are spaced apart longitudinally of the vehicle in sequence. Thus, the impact force during a frontal collision of the vehicle can be absorbed and dispersed simultaneously from three positions by the front crossbeam 21, the middle crossbeam 22 and the rear crossbeam 23, and the reliability of absorbing and dispersing the impact force can be improved.

[0050] The front crossbeam 21 is connected between the front sections 17 of the two frame longitudinal beams 1, and both the middle crossbeam 22 and the rear crossbeam 23 are connected between the rear sections 19 of the two frame longitudinal beams 1.

[0051] Specifically, by arranging the front crossbeam 21 between the front sections 17 of the two frame longitudinal beams 1, the front crossbeam 21 can support and connect the front sections 17 of the two frame longitudinal beams 1. By arranging both the middle crossbeam 22 and the rear crossbeam 23 between the rear sections 19 of the two frame longitudinal beams 1, the middle crossbeam 22 and the rear crossbeam 23 can support and connect the rear sections 19 of the two frame longitudinal beams 1 simultaneously, which can ensure the accuracy of the installation positions of the two frame longitudinal beams 1, improve the reliability of the operation of the frame longitudinal beams 1, and enable the impact force to be transmitted between the two frame longitudinal beams 1 through the frame crossbeams 2, so as to improve the reliability of absorbing and dispersing the impact force, that is, improve the reliability of protecting the vehicle body structure and passenger safety.

[0052] In some embodiments, first vehicle body mounting points 11 are provided on both the front section 17 and the rear section 19 of the longitudinal beam. The frame longitudinal beam 1 is adapted to be connected to the vehicle body at the first vehicle body mounting points 11, and the number of the first vehicle body mounting points 11 provided on the front section 17 of the longitudinal beam is greater than the number of the first vehicle body mounting points 11 provided on the rear section 19 of the longitudinal beam.

[0053] Specifically, the first vehicle body mounting points 11 are used to provide connection positions for the connection between the frame longitudinal beam 1 and the vehicle body. By providing the first vehicle body mounting points 11 on both the front section 17 and the rear section 19 of the longitudinal beam, a plurality of first vehicle body mounting points 11 can be arranged at intervals on the frame longitudinal beam 1, that is, the number of the first vehicle body mounting points 11 can be two, three or more. And the front section 17 and the rear section 19 of the longitudinal beam can be respectively connected to the vehicle body at a plurality of first vehicle body mounting points 11, which can improve the connection reliability and connection stability between the frame longitudinal beam 1 and the vehicle body.

[0054] Among them, it should be noted that, as Figure 1 shown, a bushing 10 is provided at the first vehicle body mounting point 11, and the structural strength at the first vehicle body mounting point 11 can be enhanced through the bushing 10 to avoid cracking caused by stress concentration. Moreover, a connecting member can be used to connect the longitudinal beam 1 of the vehicle frame to the vehicle body at the first vehicle body mounting point 11, and the connection method is simple, reliable, and easy to operate.

[0055] In addition, the two longitudinal beams 1 of the vehicle frame are configured to be inclined away from each other from the rear to the front, so that the distance between the front sections 17 of the longitudinal beams of the two longitudinal beams 1 is greater than the distance between the rear sections 19 of the longitudinal beams of the two longitudinal beams 1, and the number of the first vehicle body mounting points 11 provided on the front section 17 of the longitudinal beam is greater than the number of the first vehicle body mounting points 11 provided on the rear section 19 of the longitudinal beam. Then, by setting more first vehicle body mounting points 11, the front section 17 of the longitudinal beam and the vehicle body can be connected to improve the connection reliability between the two.

[0056] Exemplarily, as Figure 1 shown, three first vehicle body mounting points 11 are provided on the longitudinal beam 1 of the vehicle frame along the longitudinal direction of the vehicle, and two first vehicle body mounting points 11 are provided at the front section 17 of the longitudinal beam. Then, the front section 17 of the longitudinal beam and the vehicle body can be connected at the two first vehicle body mounting points 11 simultaneously to improve the connection reliability and connection stability between the two. One first vehicle body mounting point 11 is provided at the rear section 19 of the longitudinal beam, and the rear section 19 of the longitudinal beam and the vehicle body can be connected at this one first vehicle body mounting point 11, thus realizing the connection between the longitudinal beam 1 of the vehicle frame and the vehicle body. Further, a total of six first vehicle body mounting points 11 are provided on the two longitudinal beams 1 of the vehicle frame, and the number of the bushings 10 provided is also six, which corresponds to the six first vehicle body mounting points 11 one by one to improve the reliability of enhancing the structural strength at the first vehicle body mounting points 11.

[0057] In some embodiments, the front subframe 100 further includes rear side connecting plates 3. There are two rear side connecting plates 3, which are correspondingly connected to the rear ends of the rear sections 19 of the two longitudinal beams 1 of the vehicle frame one by one. The rear side connecting plates 3 are adapted to be connected to the corresponding rear sections 19 of the longitudinal beams and the vehicle body at the same first vehicle body mounting point 11.

[0058] That is to say, the longitudinal beam 1 of the vehicle frame can be further connected to the vehicle body through the rear side connection plate 3. Two rear side connection plates 3 are provided, and the two rear side connection plates 3 correspond to the rear sections 19 of the longitudinal beams of the two vehicle frame longitudinal beams 1 one by one. That is, for each rear section 19 of the longitudinal beam of the vehicle frame longitudinal beam 1, a corresponding rear side connection plate 3 is provided to connect the rear section 19 of the longitudinal beam of the vehicle frame longitudinal beam 1 to the vehicle body through the corresponding rear side connection plate 3. And the rear side connection plate 3 is arranged at the rear end of the rear section 19 of the longitudinal beam of the vehicle frame longitudinal beam 1, so that the connection between the vehicle frame longitudinal beam 1 and the vehicle body can be further realized through the rear side connection plate 3 at the rear end of the rear section 19 of the longitudinal beam of the vehicle frame longitudinal beam 1, so as to avoid the lateral slip of the vehicle frame longitudinal beam 1 due to insufficient axial force at the installation point between the rear end of the rear section 19 of the longitudinal beam of the vehicle frame longitudinal beam 1 and the vehicle body.

[0059] Wherein, the rear side connection plate 3 and the corresponding rear section 19 of the longitudinal beam are connected to the vehicle body at the same first vehicle body installation point 11, so that the rear side connection plate 3 and the rear section 19 of the longitudinal beam can be connected to the vehicle body through the same connecting piece at the same time, which can reduce the number of connecting pieces used and reduce the setting cost, and the rear side connection plate 3 can be a single-plate stamping part.

[0060] In addition, it should be noted that a second vehicle body installation point 31 is also provided on the rear side connection plate 3. The second vehicle body installation point 31 is used to provide a connection position for the connection between the rear side connection plate 3 and the vehicle body. The second vehicle body installation point 31 is arranged on the rear side connection plate 3, that is, the rear side connection plate 3 can provide a setting position for the second vehicle body installation point 31, so as to facilitate the connection between the rear side connection plate 3 and the vehicle body at the second vehicle body installation point 31. And the second vehicle body installation point 31 and the first vehicle body installation point 11 are arranged at intervals, so as to avoid interference between the second vehicle body installation point 31 and the first vehicle body installation point 11, resulting in the inability of the vehicle frame longitudinal beam 1 or the rear side connection plate 3 to be connected to the vehicle body. Among them, the rear side connection plate 3 can be connected to the vehicle body at the second vehicle body installation point 31 through a connecting piece, and the connection method is simple, reliable and easy to operate.

[0061] Exemplarily, as Figure 1 shown, two second vehicle body installation points 31 are arranged on the rear side connection plate 3 along the transverse direction of the vehicle, so that the rear side connection plate 3 can be connected to the vehicle body at the two second vehicle body installation points 31 at the same time, so as to improve the connection reliability and connection stability between the two, and a total of four second vehicle body installation points 31 are arranged on the two rear side connection plates 3, and the two rear side connection plates 3 can be respectively connected to the vehicle body at the four second vehicle body installation points 31 at the same time, so as to respectively improve the connection reliability and connection stability between the two rear side connection plates 3 and the vehicle body.

[0062] In some embodiments, the height difference between the front section 17 of the longitudinal beam and the rear section 19 of the longitudinal beam is L, and it satisfies: 30mm ≤ L ≤ 80mm.

[0063] Specifically, the longitudinal frame member 1 extends along the longitudinal direction of the vehicle. The longitudinal frame member 1 is configured such that the front section 17 of the longitudinal beam is higher than the rear section 19 of the longitudinal beam, enabling the longitudinal frame member 1 to be in a Z shape to avoid interfering with the tire envelope and various components in the powertrain transmission system, preventing interference between the longitudinal frame member 1 and the tire envelope or various components in the powertrain transmission system, which may result in the inability to install the longitudinal frame member 1. Moreover, the height difference between the front section 17 and the rear section 19 of the longitudinal frame member 1 can be L, where 30 mm ≤ L ≤ 80 mm, that is, L can be 30 mm, 40 mm, 80 mm, etc. That is, the height difference between the front section 17 and the rear section 19 of the longitudinal beam should not be too large or too small. If the height difference is too large, it will lead to an excessive height of the longitudinal frame member 1, which is not conducive to the layout of the longitudinal frame member 1 on the vehicle. If the height difference is too small, there will be insufficient space to avoid the tire envelope or various components in the powertrain transmission system, causing interference between the longitudinal frame member 1 and the tire envelope or various components in the powertrain transmission system.

[0064] In some embodiments, both the longitudinal frame member 1 and the cross frame member 2 of the vehicle frame include an upper plate 4 and a lower plate 5. Both the upper plate 4 and the lower plate 5 are configured in a trough shape. The upper plate 4 and the lower plate 5 are snap - connected and define an internal cavity 6, and a reinforcing plate 7 is provided in the internal cavity 6.

[0065] Specifically, as Figures 2-3 shown, by making both the longitudinal frame member 1 and the cross frame member 2 of the vehicle frame include an upper plate 4 and a lower plate 5, the impact force during a frontal or side collision of the vehicle can be absorbed and dispersed by the upper plate 4 and the lower plate 5 together. Moreover, by configuring both the upper plate 4 and the lower plate 5 in a trough shape, the cross - section of the upper plate 4 and the lower plate 5 can be in a U shape, which can enhance the structural strength of the upper plate 4 and the lower plate 5. At the same time, the upper plate 4 and the lower plate 5 are snap - connected so that the longitudinal frame member 1 and the cross frame member 2 can each form an integral body, thereby enhancing the structural strength of the longitudinal frame member 1 and the cross frame member 2. And the upper plate 4 and the lower plate 5 define an internal cavity 6, enabling the impact force to be transmitted and diffused in the internal cavity 6, thereby enhancing the reliability of the longitudinal frame member 1 and the cross frame member 2 in absorbing and dispersing the impact force. Additionally, a reinforcing plate 7 is provided in the internal cavity 6, and the structural strength of the longitudinal frame member 1 and the cross frame member 2 can be further enhanced through the reinforcing plate 7, thereby effectively enhancing the reliability of the longitudinal frame member 1 and the cross frame member 2 in absorbing and dispersing the impact force.

[0066] Moreover, it should be noted that the structural strength of the longitudinal frame member 1 and the cross frame member 2 can also be enhanced by increasing the thickness of the upper plate 4 and the lower plate 5.

[0067] In some embodiments, the front sub - frame 100 further includes a front anti - collision beam 8. The front anti - collision beam 8 is located at the front of the longitudinal frame member 1, and an energy - absorbing box 9 is provided between the front anti - collision beam 8 and the front end of the longitudinal frame member 1.

[0068] Specifically, by disposing the front anti-collision beam 8 at the front part of the vehicle frame longitudinal beam 1, the front anti-collision beam 8 can be set at the very front of the vehicle, so as to absorb and disperse the impact force when the vehicle is impacted in the forward direction through the front anti-collision beam 8, thereby protecting the vehicle body structure and the safety of passengers. At the same time, an energy-absorbing box 9 is also disposed on the front subframe 100. The energy-absorbing box 9 can further absorb the impact force during vehicle collision, and by disposing the energy-absorbing box 9 between the front anti-collision beam 8 and the vehicle frame longitudinal beam 1, the impact forces on both the front anti-collision beam 8 and the vehicle frame longitudinal beam 1 can be absorbed, effectively improving the reliability of protecting the vehicle body structure and the safety of passengers, and reducing the number of energy-absorbing boxes 9 and the installation cost.

[0069] In the embodiment as Figures 1-2 shown, energy-absorbing boxes 9 are disposed at both ends of the front anti-collision beam 8, so that the impact force can be absorbed by the two energy-absorbing boxes 9 simultaneously, effectively improving the reliability of absorbing the impact force. One end of the energy-absorbing box 9 is connected to the front anti-collision beam 8, and the other end extends into the internal cavity 6 formed by the vehicle frame longitudinal beam 1, so as to realize the installation and fixation of the energy-absorbing box 9, further improving the reliability of the energy-absorbing box 9 in working, and making the collapse direction of the energy-absorbing box 9 the same as the extending direction of the front area of the vehicle frame longitudinal beam 1, so as to improve the working efficiency of the energy-absorbing box 9 and further improve the reliability of protecting the vehicle body structure and the safety of passengers.

[0070] Among them, the front anti-collision beam 8 can be made of aluminum material by extrusion molding and welding, and the front anti-collision beam 8 can be made arc-shaped to increase the protection range of the vehicle body structure and improve the reliability of protecting the vehicle body structure and the safety of passengers.

[0071] And / or, the vehicle frame longitudinal beam 1 is configured such that the front area is higher than the rear area.

[0072] Specifically, as Figure 2 shown, the vehicle frame longitudinal beam 1 extends along the longitudinal direction of the vehicle. By configuring the vehicle frame longitudinal beam 1 such that the front area is higher than the rear area, that is, the height of the front section 17 of the longitudinal beam is higher than the height of the rear section 19 of the longitudinal beam, the vehicle frame longitudinal beam 1 can be made in a Z shape to avoid the tire envelope and various components in the powertrain transmission system, preventing interference between the vehicle frame longitudinal beam 1 and the tire envelope or various components in the powertrain transmission system, resulting in the inability to install the vehicle frame longitudinal beam 1.

[0073] In addition, it should be noted that during actual design, only one of the vehicle frame longitudinal beams 1 can be inclined and extended relative to the longitudinal direction of the vehicle from the rear to the front, or both vehicle frame longitudinal beams 1 can be inclined and extended relative to the longitudinal direction of the vehicle from the rear to the front, so as to absorb and disperse the impact force during vehicle offset collision, and further protect the vehicle body structure and the safety of passengers.

[0074] And, as Figure 1As shown in the figure, four front mounting points 15 of the lower control arm and four rear mounting points 16 of the lower control arm are respectively provided on the front subframe 100. Thus, the connection between the front subframe 100 and the lower control arm can be achieved through the four front mounting points 15 of the lower control arm and the four rear mounting points 16 of the lower control arm at the same time, and the connection reliability and connection stability between the two can be improved. At the same time, three steering knuckle mounting points 13 are also provided on the front subframe 100. Thus, the connection between the front subframe 100 and the steering knuckle can be achieved through the three steering knuckle mounting points 13 at the same time, and the connection reliability and connection stability between the two can be improved. In addition, two mounting points 14 of the powertrain mounting system are also provided on the front subframe 100. Thus, the connection between the front subframe 100 and the powertrain mounting system can be achieved through the two mounting points 14 of the powertrain mounting system at the same time, and the connection reliability and connection stability between the two can be improved.

[0075] Further, when the vehicle is subjected to an offset collision, the energy-absorbing box 9 collapses, the front region of the frame longitudinal beam 1 is bent and deformed, and the lower control arm and the front subframe 100 are separated due to force at the front mounting point 15 of the lower control arm. As a result, the wheel will swing outwards of the vehicle with the steering knuckle and the lower control arm to avoid the wheel invading the cab and causing harm to the passengers, thereby improving the safety performance of the vehicle.

[0076] The present utility model also proposes a vehicle.

[0077] The vehicle according to the embodiment of the present utility model is provided with the front subframe 100 as described in any one of the above. By providing the frame cross beam 2 and the frame longitudinal beam 1, the impact force during a frontal or side collision of the vehicle can be absorbed and dispersed. Moreover, both frame longitudinal beams 1 are configured to be inclined away from each other from the rear to the front, so that the impact force during an offset collision of the vehicle can be absorbed and dispersed, and the area for the front subframe 100 to bear the impact force during a side collision can be increased, effectively improving the reliability of protecting the body structure and the safety of passengers. In addition, by making the front end of the frame longitudinal beam 1 higher than the rear end of the frame longitudinal beam 1, the tire envelope and the components in the powertrain transmission system can be avoided, and the reliability of installing the frame longitudinal beam 1 and the reliability of the frame longitudinal beam 1 working can be improved.

[0078] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A front subframe, characterized in that, Comprising: Frame cross member; Two frame longitudinal members, the two frame longitudinal members being spaced apart from each other in the vehicle transverse direction, the frame cross member being connected between the two frame longitudinal members, each of the frame longitudinal members being arranged to extend obliquely relative to the vehicle longitudinal direction from the rear to the front, and the two frame longitudinal members being configured to incline away from each other from the rear to the front; Wherein, at least a part of the frame longitudinal member is configured to extend obliquely upward from the rear to the front, and the front end of the frame longitudinal member is higher than the rear end of the frame longitudinal member, and both the frame longitudinal member and the frame cross member include an upper plate and a lower plate, both the upper plate and the lower plate being configured in a groove shape, the upper plate and the lower plate being snap-connected to define an internal cavity, and a reinforcing plate being provided in the internal cavity.

2. The front subframe according to claim 1, characterized in that, The frame longitudinal member includes a front longitudinal section, a middle longitudinal section, and a rear longitudinal section distributed in the front-rear direction, the middle longitudinal section being connected between the front longitudinal section and the rear longitudinal section, and the middle longitudinal section being configured to extend obliquely upward from the rear to the front, and both the front longitudinal section and the rear longitudinal section extending along the vehicle longitudinal direction and the front longitudinal section being higher than the rear longitudinal section.

3. The front subframe according to claim 2, characterized in that, There are a plurality of the frame cross members, the plurality of frame cross members being connected between the two frame longitudinal members and spaced apart from each other in the vehicle longitudinal direction, at least one of the frame cross members being located between the front longitudinal sections of the two frame longitudinal members, and / or at least one of the frame cross members being located between the rear longitudinal sections of the two frame longitudinal members.

4. The front subframe according to claim 3, characterized in that, There are three frame cross members, namely a front cross member, a middle cross member, and a rear cross member, the front cross member, the middle cross member, and the rear cross member being spaced apart from each other in sequence in the vehicle longitudinal direction; The front cross member is connected between the front longitudinal sections of the two frame longitudinal members, and both the middle cross member and the rear cross member are connected between the rear longitudinal sections of the two frame longitudinal members.

5. The front subframe according to claim 2, wherein Both the front longitudinal section and the rear longitudinal section are provided with first vehicle body mounting points, the frame longitudinal member being adapted to be connected to the vehicle body at the first vehicle body mounting points, and the number of the first vehicle body mounting points provided on the front longitudinal section being greater than the number of the first vehicle body mounting points provided on the rear longitudinal section.

6. The front subframe according to claim 5, characterized in that, It further includes rear side connection plates, there are two rear side connection plates which are respectively and correspondingly connected to the rear ends of the rear longitudinal sections of the two frame longitudinal members, and the rear side connection plates are adapted to be connected to the corresponding rear longitudinal sections at the same first vehicle body mounting point with the vehicle body.

7. The front subframe according to claim 2, characterized in that, The height difference between the front longitudinal section and the rear longitudinal section is L, and it satisfies: 30mm ≤ L ≤ 80mm.

8. The front subframe according to claim 1, characterized in that, It further includes a front anti-collision beam, the front anti-collision beam being located at the front of the frame longitudinal member, and an energy absorption box being provided between the front anti-collision beam and the front end of the frame longitudinal member; And / or, the frame longitudinal member is configured such that the front region is higher than the rear region.

9. A vehicle, characterized in that, The front subframe according to any one of claims 1-8 is provided.

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