Front auxiliary frame and vehicle

Abstract

The utility model provides a front auxiliary frame and a vehicle. The front auxiliary frame is provided with auxiliary frame longitudinal beams arranged on the left side and the right side respectively, auxiliary frame energy absorption boxes arranged on the left side and the right side respectively and an auxiliary frame front cross beam. The rear ends of the auxiliary frame energy absorption boxes on the two sides are connected with the front side of the auxiliary frame front cross beam, the front ends of the auxiliary frame longitudinal beams on the two sides are connected with the rear side of the auxiliary frame front cross beam, and in the left-right direction of the whole vehicle, all the ends of the auxiliary frame front cross beam are provided with protruding parts protruding outwards relative to the auxiliary frame energy absorption boxes on the corresponding sides. According to the front auxiliary frame disclosed by the utility model, the collision participation degree of the front auxiliary frame can be increased by utilizing the contact between the convex part and the collision barrier during small offset collision, so that the front auxiliary frame can absorb and transmit collision force more sufficiently, and the collision performance of the front auxiliary frame can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sub-frames, and in particular to a front sub-frame. The utility model also relates to a vehicle provided with the front sub-frame. Background Art

[0002] In the related art, the front subframe, as a component of the whole vehicle collision system, has an important impact on the safety of the whole vehicle during frontal collision and offset collision.

[0003] Currently, small offset collisions, that is, small overlap collisions with a speed of 64km / h and a 15% overlap, are a type of traffic accident with a relatively high incidence and casualty rate. Under small offset collision conditions, the traditional front subframe has the disadvantages of low collision participation, weak collision response capability, and poor collision force transmission and dispersion effect, which is not conducive to improving the collision performance of the front subframe. Utility Model Content

[0004] In view of this, the utility model aims to provide a front subframe to improve the collision performance of the front subframe.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A front sub-frame, the front sub-frame comprising sub-frame longitudinal beams arranged on left and right sides, sub-frame energy absorption boxes arranged on left and right sides, and a sub-frame front cross beam;

[0007] The rear ends of the sub-frame energy absorption boxes on both sides are connected to the front side of the sub-frame front cross beam, the front ends of the sub-frame longitudinal beams on both sides are connected to the rear side of the sub-frame front cross beam, and along the left-right direction of the whole vehicle, each end of the sub-frame front cross beam has a protruding portion protruding outwardly relative to the sub-frame energy absorption box on the corresponding side.

[0008] Furthermore, the projections of the sub-frame energy absorption box on each side and the sub-frame longitudinal beam on the same side in the front-rear direction of the whole vehicle at least partially overlap.

[0009] Furthermore, viewed from the front-rear direction of the entire vehicle, the energy absorption box of the subframe on each side is offset to the side of the subframe longitudinal beam on the same side close to the outside of the vehicle.

[0010] Furthermore, reinforcements are provided at the connection positions between the sub-frame longitudinal beams and the sub-frame front cross beams on both sides, one end of the reinforcement is connected to the sub-frame longitudinal beam, and the other end of the reinforcement is connected to the sub-frame front cross beam.

[0011] Furthermore, the reinforcement member includes a reinforcement plate located on the inner side of the sub-frame longitudinal beam, and the reinforcement plate is an arc-shaped structure extending from the inner side of the sub-frame longitudinal beam to the rear side of the sub-frame front cross beam.

[0012] Furthermore, the top and bottom of the reinforcing plate are provided with flanges, and a groove is formed on the reinforcing plate;

[0013] The auxiliary frame longitudinal beam and the auxiliary frame front cross beam are both partially located in the groove, and a cavity is formed between the auxiliary frame longitudinal beam, the auxiliary frame front cross beam and the reinforcement plate.

[0014] Furthermore, the front subframe has a subframe anti-collision beam connected to the front ends of the subframe energy absorption boxes on both sides, a subframe middle crossbeam connected between the subframe longitudinal beams on both sides, and a subframe rear crossbeam connected to the rear sections of the subframe longitudinal beams on both sides.

[0015] Furthermore, the auxiliary frame longitudinal beams on both sides are respectively provided with connecting arms extending upwards;

[0016] Viewed from the up-down direction of the vehicle, the cross beam in the subframe is located between the connecting arms on both sides, and / or a reinforcing beam is connected between the tops of the connecting arms on both sides.

[0017] Further, the length of the rear cross beam of the sub-frame along the left-right direction of the whole vehicle is greater than the length of the front cross beam of the sub-frame along the left-right direction of the whole vehicle; and / or,

[0018] A subframe rear energy absorption box is provided on the rear side of the subframe rear cross beam, and along the left-right direction of the whole vehicle, the subframe rear energy absorption box is located in the middle of the subframe rear cross beam.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The front subframe of the utility model is provided with protruding parts protruding outwardly relative to the subframe energy absorption box at both ends of the front cross beam of the subframe. In the event of a small offset collision, the protruding parts can be used to contact the collision barrier to increase the collision participation degree of the front subframe, so that the front subframe can more fully absorb and transmit the collision force, thereby improving the collision performance of the front subframe.

[0021] In addition, the projections of the subframe energy absorption box and the subframe longitudinal beam in the front-rear direction of the vehicle at least partially overlap, that is, the subframe energy absorption box and the subframe longitudinal beam are connected, which can facilitate the transmission of the collision force of the subframe energy absorption box to the subframe longitudinal beam. The subframe energy absorption box is offset on the side of the subframe longitudinal beam close to the outside of the vehicle, so that the subframe energy absorption box can better participate in offset collisions. By arranging a reinforcement member at the connection position between the subframe longitudinal beam and the subframe front cross beam, the reinforcement member can be used to guide part of the collision force to the subframe front cross beam, which helps to improve the transmission and dispersion effect of the collision force.

[0022] Secondly, the reinforcement member adopts an arc-shaped reinforcement plate, which has a simple structure, is easy to prepare and connect between the subframe longitudinal beam and the subframe front cross beam, and can also have a good collision force guidance effect. The flanges are set at the top and bottom of the reinforcement plate to increase the structural strength of the reinforcement plate itself, so that the subframe longitudinal beam and the subframe front cross beam are partially located in the groove, which can improve the reliability of the connection between the reinforcement plate and the subframe longitudinal beam and the subframe front cross beam. By forming a cavity between the subframe longitudinal beam, the subframe front cross beam and the reinforcement plate, the high strength of the cavity structure can be used to increase the stiffness of the connection position between the subframe longitudinal beam and the subframe front cross beam, which is conducive to improving the collision force transmission capability.

[0023] Furthermore, the subframe anti-collision beam can be used to absorb and transmit the collision force, thereby improving the collision response capability of the front subframe. At the same time, the subframe anti-collision beam can also be used as a pedestrian anti-rollover beam, which can increase the safety of pedestrian collisions. The subframe middle beam and the subframe rear beam can be set to achieve the lateral transmission of collision force in the front subframe, which helps to improve the collision force transmission and absorption effect. The subframe middle beam is located between the connecting arms on both sides, and the rigidity of the connecting arms on both sides can be increased with the help of the subframe cross beam. A reinforcing beam is set between the tops of the connecting arms on both sides, which can increase the connection strength of the connecting arms on both sides and ensure the reliability of the connection between the front subframe and the vehicle body. The reinforcing beam can also cooperate with the subframe middle beam to form a ring structure to increase the overall rigidity of the front subframe.

[0024] In addition, by making the length of the rear cross beam of the subframe in the left-right direction of the vehicle greater than that of the front cross beam of the subframe, the rear cross beam of the subframe can be used as a barrier to prevent the beam from contacting the collision barrier in an offset collision condition, thereby reducing the amount of intrusion into the passenger compartment and improving collision safety. By arranging a rear energy absorption box of the subframe in the middle of the rear side of the rear cross beam of the subframe, when the front subframe slides backward due to a collision, the rear energy absorption box of the subframe can be used to absorb energy by collapse, which helps to increase the protection effect of the middle structure of the vehicle body.

[0025] Another object of the present invention is to provide a vehicle, wherein the vehicle is provided with the front subframe as described above.

[0026] The vehicle described in the present invention has the same beneficial effects as the above-mentioned front subframe, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the front subframe according to an embodiment of the utility model;

[0029] Figure 2 A top view of the front subframe according to an embodiment of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the reinforcement plate according to an embodiment of the utility model;

[0031] Figure 4 This is a schematic structural diagram of the reinforcing plate according to an embodiment of the utility model from another perspective;

[0032] Figure 5 It is a structural schematic diagram of the rear energy absorption box of the sub-frame according to an embodiment of the utility model;

[0033] Figure 6 A schematic diagram of collision force transmission of the front subframe according to an embodiment of the utility model;

[0034] Description of reference numerals:

[0035] 1. Subframe longitudinal beam; 2. Subframe front crossbeam; 3. Subframe middle crossbeam; 4. Subframe rear crossbeam; 5. Subframe energy absorption box; 6. Subframe anti-collision beam; 7. Reinforcement; 8. Connecting arm; 9. Reinforcement beam; 10. Subframe rear energy absorption box;

[0036] 2a, protruding part; 7a, flange; 7b, groove;

[0037] G. Subframe mounting point. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0039] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] Embodiment 1

[0043] This embodiment relates to a front subframe, combined with Figure 1 and Figure 2 As shown in FIG. 1 , the front sub-frame comprises a sub-frame longitudinal beam 1 disposed on the left and right sides, a sub-frame energy absorption box 5 disposed on the left and right sides, and a sub-frame front cross beam 2 .

[0044] Among them, the rear ends of the sub-frame energy absorbing boxes 5 on both sides are connected to the front side of the sub-frame front cross beam 2, the front ends of the sub-frame longitudinal beams 1 on both sides are connected to the rear side of the sub-frame front cross beam 2, and along the left and right direction of the whole vehicle, each end of the sub-frame front cross beam 2 also has a protruding portion 2a protruding outward relative to the sub-frame energy absorbing box 5 on the corresponding side.

[0045] At this time, as set above, by providing protruding portions 2a protruding outwardly relative to the sub-frame energy absorption box 5 at both ends of the sub-frame front cross beam 2, this embodiment can utilize the protruding portions 2a to contact the collision barrier when the vehicle has a small offset collision, thereby increasing the collision participation degree of the front sub-frame, thereby enabling the front sub-frame to more fully absorb and transmit the collision force, thereby achieving the purpose of improving the collision performance of the front sub-frame.

[0046] Based on the above overall introduction, specifically, in this embodiment, the sub-frame energy absorbing box 5 and the sub-frame longitudinal beam 1 are respectively connected to the front and rear sides of the sub-frame front cross beam 2, so the protruding parts 2a at both ends of the sub-frame front cross beam 2 are directly formed by the ends of the sub-frame front cross beam 2. Figure 2 As shown, in a specific implementation, the distance s of the protruding portion 2a compared to the sub-frame energy absorption box 5 can be set and adjusted according to the requirements of relevant collision regulations and the shape of the front part of the vehicle body.

[0047] In addition, in the front sub-frame of the present embodiment, in addition to the above-mentioned sub-frame longitudinal beam 1, the sub-frame front cross beam 2 and the sub-frame energy absorption box 5, further, Figure 1 and Figure 2As shown, the front subframe also has a subframe anti-collision beam 6 connected to the front ends of the subframe energy absorption boxes 5 on both sides, a subframe middle cross beam 3 connected between the subframe longitudinal beams 1 on both sides, and a subframe rear cross beam 4 connected to the rear sections of the subframe longitudinal beams 1 on both sides.

[0048] At this time, the arrangement of the subframe anti-collision beam 6 can utilize the absorption and transmission of collision force by the subframe anti-collision beam 6 to improve the collision response capability of the front subframe, and the subframe anti-collision beam 6 can also serve as a pedestrian anti-rollover beam to increase the safety of pedestrian collision. The arrangement of the subframe middle beam 3 and the subframe rear beam 4 can realize the lateral transmission of collision force in the front subframe, which helps to improve the collision force transmission and absorption effect.

[0049] In addition, the above-mentioned subframe anti-collision beam 6, subframe middle cross beam 3 and subframe rear cross beam 4, of course, there are also subframe longitudinal beam 1, subframe front cross beam 2 and subframe energy absorption box 5, etc., which can be implemented by using conventional beam structure, anti-collision beam structure and energy absorption box structure in existing vehicle subframes. At the same time, in the front subframe of this embodiment, the connection between the subframe longitudinal beam 1 and each cross beam, the connection between the subframe energy absorption box 5 and the subframe front cross beam 2 and the subframe anti-collision beam 6, etc., can also refer to the connection method in the existing vehicle subframe.

[0050] In this embodiment, as a preferred implementation form, continue as follows Figure 1 and Figure 2 As shown, the energy absorbing box 5 of each side subframe is also connected with the longitudinal beam 1 of the subframe on the same side in the front-rear direction of the whole vehicle. At this time, the connection between the energy absorbing box 5 of the subframe and the longitudinal beam 1 of the subframe is that the projections of the energy absorbing box 5 and the longitudinal beam 1 of the subframe at least partially overlap on the basis of being indirectly connected through the front cross beam 2 of the subframe. It can be understood that by connecting the energy absorbing box 5 of the subframe with the longitudinal beam 1 of the subframe, it is convenient to transmit the collision force of the energy absorbing box 5 of the subframe to the longitudinal beam 1 of the subframe, so as to improve the transmission and dispersion effect of the collision force of the front subframe.

[0051] As a preferred implementation form, Figure 2 As shown, in this embodiment, from the front-rear direction of the vehicle, the energy absorption box 5 of each side subframe is also offset to the side of the same side subframe longitudinal beam 1 close to the outside of the vehicle. At this time, taking the central axis of the subframe energy absorption box 5 and the central axis of the front section of the subframe longitudinal beam 1 as examples, the offset distance k between the subframe energy absorption box 5 and the same side subframe longitudinal beam 1 can also be set and adjusted according to the requirements of relevant collision regulations and the front shape of the vehicle body.

[0052] Moreover, it can be understood that, based on the connection between the two, by making the sub-frame energy absorbing box 5 also offset to the side of the same-side sub-frame longitudinal beam 1 close to the outside of the vehicle, the sub-frame energy absorbing box 5 can better participate in the offset collision, so as to improve the offset collision response performance of the front sub-frame.

[0053] In this embodiment, as a preferred implementation form, still refer to Figure 1 and Figure 2 As shown, reinforcement members 7 are provided at the connection positions between the auxiliary frame longitudinal beams 1 and the auxiliary frame front cross beams 2 on both sides, and one end of the reinforcement member 7 is connected to the auxiliary frame longitudinal beams 1 , and the other end of the reinforcement member 7 is connected to the auxiliary frame front cross beam 2 .

[0054] At this time, by providing the above-mentioned reinforcement member 7 at the connection position between the subframe longitudinal beam 1 and the subframe front cross beam 2, the reinforcement member 7 can be used to guide part of the collision force to the subframe front cross beam 2, which helps to improve the transmission and dispersion effect of the collision force.

[0055] In specific implementation, preferably, the reinforcement member 7 may include, for example, a reinforcement plate located inside the sub-frame longitudinal beam 1, and the reinforcement plate is also specifically an arc-shaped structure extending from the inside of the sub-frame longitudinal beam 1 to the rear side of the sub-frame front cross beam 2. In this way, the reinforcement member 7 adopts an arc-shaped reinforcement plate, which not only has the advantages of simple structure, easy preparation, and easy connection and setting between the sub-frame longitudinal beam 1 and the sub-frame front cross beam 2, but also has a good collision force guidance effect.

[0056] In addition, based on the use of a reinforcing plate as the reinforcing member 7, it is worth noting that the reinforcing plate can be, for example, a stamped arc-shaped plate, and is respectively connected to the inner side of the auxiliary frame longitudinal beam 1 and the rear side of the auxiliary frame front cross beam 2. However, as a preferred embodiment, the reinforcing plate is further combined with Figure 3 and Figure 4 As shown, in this embodiment, for example, flanges 7a may be provided at both the top and the bottom of the reinforcing plate, thereby forming a groove 7b on the reinforcing plate. When the reinforcing member 7 is provided on the front sub-frame, the sub-frame longitudinal beam 1 and the sub-frame front cross beam 2 are both partially located in the groove 7b, and a cavity can also be formed between the sub-frame longitudinal beam 1, the sub-frame front cross beam 2 and the reinforcing plate.

[0057] It is understandable that by providing flanges 7a at the top and bottom of the reinforcing plate, the structural strength of the reinforcing plate itself can be increased. The sub-frame longitudinal beam 1 and the sub-frame front cross beam 2 are partially located in the groove 7b, which can improve the reliability of the connection between the reinforcing plate and the sub-frame longitudinal beam 1 and the sub-frame front cross beam 2. By forming a cavity between the sub-frame longitudinal beam 1, the sub-frame front cross beam 2 and the reinforcing plate, the high structural strength of the cavity can be utilized to increase the rigidity of the connection position between the sub-frame longitudinal beam 1 and the sub-frame front cross beam 2, which is conducive to improving the collision force transmission capability.

[0058] In addition, it should be noted that, in addition to the reinforcing plate located inside the sub-frame longitudinal beam 1 , the reinforcing member 7 may also include a structure similar to the reinforcing plate located outside the sub-frame longitudinal beam 1 , or located on the top or bottom thereof.

[0059] Still Figure 1 As shown, in the front subframe of the present embodiment, connecting arms 8 extending upward are respectively provided on the subframe longitudinal beams 1 on both sides, and the connecting arms 8 on both sides are used to connect with the front cabin longitudinal beams in the front cabin of the vehicle body, so as to cooperate with the relevant mounting structures located on the subframe front cross beam 2 and the subframe rear cross beam 4, so as to realize the installation of the front subframe on the vehicle body.

[0060] At the same time, as a preferred implementation form, this embodiment also makes the subframe middle cross beam 3 located between the two side connecting arms 8 when viewed from the upper and lower directions of the whole vehicle. In this way, the subframe middle cross beam 3 is located between the two side connecting arms 8, and the rigidity of the two side connecting arms 8 can be increased by means of the subframe cross beam 3.

[0061] In addition, in this embodiment, a reinforcing beam 9 can be connected between the tops of the connecting arms 8 on both sides. The reinforcing beam 9 can be a conventional tube beam or other forms of beam structure, and it can be understood that by providing the reinforcing beam 9 between the tops of the connecting arms 8 on both sides, the connection strength of the connecting arms 8 on both sides can be further increased to ensure the reliability of the connection between the front subframe and the vehicle body. At the same time, it is obvious that the reinforcing beam 8 can also cooperate with the cross beam 3 in the subframe to form a ring structure to increase the overall rigidity of the front subframe.

[0062] In this embodiment, Figure 2 As shown in , as a preferred embodiment, the length of the subframe rear cross beam 4 along the left-right direction of the vehicle is also greater than the length of the subframe front cross beam 2 along the left-right direction of the vehicle. At this time, the length difference m between the subframe rear cross beam 4 and the subframe front cross beam 2 can be selected and adjusted based on the vehicle body shape requirements. By making the length of the subframe rear cross beam 4 along the left-right direction of the vehicle greater than the subframe front cross beam 2, it can also be used in the offset collision condition to prevent the subframe rear cross beam 4 from contacting the collision barrier, which can reduce the amount of intrusion into the passenger compartment and improve the collision safety of the vehicle.

[0063] Still by Figure 1 , Figure 2 , and combined with Figure 5As shown, as a preferred implementation form, this embodiment also provides a sub-frame rear energy absorption box 10 on the rear side of the sub-frame rear cross beam 4, and along the left-right direction of the whole vehicle, the sub-frame rear energy absorption box 10 is specifically located in the middle of the sub-frame rear cross beam 4. At this time, the above-mentioned sub-frame rear energy absorption box 10 can adopt a conventional energy absorption box structure, and by providing the sub-frame rear energy absorption box 10 in the middle of the rear side of the sub-frame rear cross beam 4, this embodiment can collapse and absorb energy through the contact between the sub-frame rear energy absorption box 10 and the battery pack in the middle of the vehicle body when the front sub-frame slides backward due to a collision, which helps to increase the protection effect of the middle structure of the vehicle body.

[0064] The front subframe of this embodiment is provided with protruding portions 2a protruding outwardly relative to the subframe energy absorption box 5 at both ends of the subframe front cross beam, and a reinforcement member 7 is provided at the connection position between the subframe longitudinal beam 1 and the subframe front cross beam 2. When the vehicle collides, especially when a small offset collision occurs, the protruding portions 2a can not only be used to contact the collision barrier to increase the collision participation of the front subframe, but also the reinforcement member 7 can be used to guide the collision force to better transmit and disperse it in the front subframe. Therefore, this embodiment can make the front subframe absorb and transmit the collision force more fully, and can improve the collision performance of the front subframe.

[0065] In addition, combined Figure 6 As shown in the figure, specifically, when a vehicle collides, for a head-on collision condition, the collision force is transmitted from the subframe energy absorption box 5 to the subframe front cross beam 2, and then the collision force can not only be transmitted backward along the subframe longitudinal beam 1, but also can be transmitted laterally (i.e., the left and right direction of the whole vehicle) along the subframe front cross beam 2. In this way, combined with the transmission of the subframe middle cross beam 3 and the subframe rear cross beam 4, the transmission and dispersion effect of the collision force can be achieved.

[0066] For small offset collision conditions, the protruding portion 2a at the end of the front cross beam 2 of the subframe is used as a blocking area of ​​the collision barrier, and the energy can be absorbed by crushing around the subframe mounting point G at the front of the front subframe. Then, similarly, the collision force can not only be transmitted backward along the subframe longitudinal beam 1, but also can be transmitted laterally (i.e., the left and right direction of the whole vehicle) along the front cross beam 2 of the subframe. In this way, combined with the transmission of the subframe middle cross beam 3 and the subframe rear cross beam 4, the transmission and dispersion effect of the collision force can be achieved.

[0067] When the small offset impact barrier enters the position of the rear cross beam 4 of the subframe, the rear cross beam 4 of the subframe is longer, and the rear cross beam 4 of the subframe can be used to prevent the barrier from moving backward, and absorb and transmit the collision force, which can greatly improve the collision safety of the vehicle.

[0068] Embodiment 2

[0069] This embodiment relates to a vehicle, in which the front subframe in the first embodiment is provided.

[0070] The vehicle of this embodiment can increase the collision participation of the front subframe by setting the front subframe in the first embodiment, and can also make the collision force better transmitted and dispersed in the front subframe, which can improve the collision performance of the front subframe and the collision safety quality of the whole vehicle, and has good practicality.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A front subframe, characterized in that: The front sub-frame comprises a sub-frame longitudinal beam (1) arranged on the left and right sides, a sub-frame energy absorption box (5) arranged on the left and right sides, and a sub-frame front cross beam (2); The rear ends of the sub-frame energy absorption boxes (5) on both sides are connected to the front side of the sub-frame front cross beam (2), the front ends of the sub-frame longitudinal beams (1) on both sides are connected to the rear side of the sub-frame front cross beam (2), and along the left-right direction of the whole vehicle, each end of the sub-frame front cross beam (2) has a protruding portion (2a) protruding outward relative to the sub-frame energy absorption box (5) on the corresponding side.

2. The front subframe according to claim 1, characterized in that: The projection of the sub-frame energy absorption box (5) on each side and the sub-frame longitudinal beam (1) on the same side in the front-rear direction of the whole vehicle at least partially overlaps.

3. The front subframe according to claim 2, characterized in that: When viewed from the front-rear direction of the vehicle, the sub-frame energy absorption box (5) on each side is offset to the side of the sub-frame longitudinal beam (1) on the same side close to the outside of the vehicle.

4. The front subframe according to claim 1, characterized in that: A reinforcement member (7) is provided at the connection position between the auxiliary frame longitudinal beam (1) and the auxiliary frame front cross beam (2) on both sides, one end of the reinforcement member (7) is connected to the auxiliary frame longitudinal beam (1), and the other end of the reinforcement member (7) is connected to the auxiliary frame front cross beam (2).

5. The front subframe according to claim 4, characterized in that: The reinforcement member (7) comprises a reinforcement plate located on the inner side of the auxiliary frame longitudinal beam (1), and the reinforcement plate is an arc-shaped structure extending from the inner side of the auxiliary frame longitudinal beam (1) to the rear side of the auxiliary frame front cross beam (2).

6. The front subframe according to claim 5, characterized in that: The top and bottom of the reinforcing plate are both provided with flanges (7a), and a groove (7b) is formed on the reinforcing plate; The auxiliary frame longitudinal beam (1) and the auxiliary frame front cross beam (2) are both partially located in the groove (7b), and a cavity is formed between the auxiliary frame longitudinal beam (1), the auxiliary frame front cross beam (2) and the reinforcing plate.

7. The front subframe according to any one of claims 1 to 6, characterized in that: The front sub-frame comprises a sub-frame anti-collision beam (6) connected to the front ends of the sub-frame energy absorption boxes (5) on both sides, a sub-frame middle cross beam (3) connected between the sub-frame longitudinal beams (1) on both sides, and a sub-frame rear cross beam (4) connected to the rear sections of the sub-frame longitudinal beams (1) on both sides.

8. The front subframe according to claim 7, characterized in that: The auxiliary frame longitudinal beams (1) on both sides are respectively provided with connecting arms (8) extending upwards; Viewed from the upper and lower directions of the vehicle, the cross beam (3) in the subframe is located between the connecting arms (8) on both sides, and / or a reinforcing beam (9) is connected between the tops of the connecting arms (8) on both sides.

9. The front subframe according to claim 7, characterized in that: The length of the rear cross beam (4) of the sub-frame along the left-right direction of the whole vehicle is greater than the length of the front cross beam (2) of the sub-frame along the left-right direction of the whole vehicle; and / or, A sub-frame rear energy absorption box (10) is provided on the rear side of the sub-frame rear cross beam (4), and along the left-right direction of the whole vehicle, the sub-frame rear energy absorption box (10) is located in the middle of the sub-frame rear cross beam (4).

10. A vehicle, characterized in that: The vehicle is provided with the front subframe according to any one of claims 1 to 9.

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