Auxiliary frame and vehicle

Abstract

The utility model provides an auxiliary frame and a vehicle, an auxiliary frame longitudinal beam of the auxiliary frame is provided with a vehicle body connecting support, the vehicle body connecting support is arranged close to a swing arm front installation point on the auxiliary frame longitudinal beam, and the vehicle body connecting support comprises a support upper plate and a support lower plate which are buckled together; the support lower plate partially penetrates into the support upper plate and is connected with the side face of the support upper plate, the top of the support upper plate is provided with an extending section extending outwards relative to the top of the support lower plate, and the extending section is provided with a bolt connecting hole and an open groove. The opening groove extends to the edge of the extending section from the bolt connecting hole, and the extending direction of the opening groove is inclined relative to the left-right direction of the whole vehicle and points to the lateral front portion of the vehicle. According to the auxiliary frame, the Z-direction rigidity of the front installation point of the swing arm can be improved, the auxiliary frame can be separated from a vehicle body in the collision process, invasion into a driving cabin is reduced, and therefore the collision safety of a vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a subframe. Meanwhile, the utility model also relates to a vehicle provided with the subframe. Background Art

[0002] As one of the important components of the subframe, the body connection bracket is mainly used to connect with the body. In the specific structure, the body connection bracket is usually made of front and rear opposite sheet metals that are welded together. The bottom is welded to the longitudinal beam of the subframe, and the top is connected to the body through bolts and sleeves. However, the existing body connection bracket still has shortcomings in structural design, which is not conducive to the separation of the subframe and the body during a collision, and is not conducive to the improvement of the Z-direction stiffness of the front mounting point of the swing arm, and it is difficult to meet the collision performance requirements of the whole vehicle. Utility Model Content

[0003] In view of this, the utility model aims to provide a subframe to improve the collision safety of the entire vehicle.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A subframe, wherein a body connection bracket is provided on a subframe longitudinal beam of the subframe, the body connection bracket is arranged close to a front mounting point of a swing arm on the subframe longitudinal beam, and the body connection bracket comprises a bracket upper plate and a bracket lower plate that are buckled together;

[0006] The lower plate of the bracket partially penetrates into the upper plate of the bracket and is connected to the side wall of the upper plate of the bracket, and the top of the upper plate of the bracket has an extension section extending outward relative to the top of the lower plate of the bracket, and the extension section is provided with a bolt connection hole and an opening groove;

[0007] The opening groove extends from the bolt connection hole to the edge of the extension section, and the extension direction of the opening groove is inclined relative to the left and right direction of the whole vehicle and points to the side and front of the vehicle.

[0008] Furthermore, the vehicle body connecting bracket is connected to the top of the auxiliary frame longitudinal beam, and the bracket upper plate and the bracket lower plate are buckled together along the left-right direction of the vehicle.

[0009] Furthermore, along the up-down direction of the whole vehicle, the cross-section of the upper plate of the bracket is in an "n" shape; the lower plate of the bracket has a lower plate lower portion that partially penetrates into the upper plate of the bracket, and an upper plate upper portion that completely enters into the upper plate of the bracket; along the up-down direction of the whole vehicle, the cross-section of the lower plate lower portion is in a "U" shape.

[0010] Furthermore, along the up-down direction of the vehicle, the cross-section of the upper portion of the lower plate is in an "M" shape, and an avoidance groove is formed on the upper portion of the lower plate and is located below the extension section.

[0011] Furthermore, the width of the opening groove is smaller than the diameter of the bolt connection hole.

[0012] Furthermore, the angle between the extension direction of the opening slot and the left-right direction of the vehicle is between 15° and 25°.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The subframe described in the utility model is arranged near the front mounting point of the swing arm through the vehicle body connecting bracket, so that the Z-direction rigidity of the front mounting point of the swing arm can be improved, and through the arrangement of the opening groove at the vehicle body connecting hole, the subframe connecting bolt can be disengaged from the vehicle body connecting hole during a collision, so that the subframe is separated from the vehicle body, the intrusion of the subframe into the driver's cabin is reduced, and the collision safety of the vehicle is improved.

[0015] Furthermore, the body connection bracket is connected to the top of the auxiliary frame longitudinal beam, and the bracket upper plate and the bracket lower plate are buckled together along the left and right direction of the vehicle, which can facilitate the arrangement of the body connection bracket on the auxiliary frame longitudinal beam, and also facilitate the body connection bracket to have better Z-direction stiffness. The cross section of the bracket upper plate is designed to be "n" shaped, and the cross section of the lower part of the lower plate is designed to be "U" shaped, and the lower part of the lower plate of the bracket is partially inserted into the bracket upper plate, and the upper part of the lower plate is completely inserted into the bracket upper plate, which can facilitate the buckling connection of the bracket upper and lower plates, and can ensure the overall structural strength of the body connection bracket.

[0016] Secondly, the cross section of the upper part of the lower plate is in an "M" shape, forming an avoidance groove, which can facilitate the operation of the connecting bolts and increase the rigidity of the connection position with the vehicle body. The width of the opening groove is smaller than the diameter of the bolt connection hole, which can ensure the reliability of the bolt connection on the basis of achieving bolt disengagement. The angle between the extension direction of the opening groove and the left and right direction of the vehicle is between 15° and 25°, which is conducive to the disengagement of the connecting bolts in the event of a collision, and then facilitates the separation of the subframe from the vehicle body.

[0017] Another object of the utility model is to provide a vehicle, wherein the vehicle is provided with the subframe as described above, and the vehicle body connecting bracket is connected to the vehicle body longitudinal beam through the connecting bolts arranged in the bolt connecting holes.

[0018] Furthermore, a threaded tube is provided in the longitudinal beam of the vehicle body, the connecting bolt is connected to the threaded tube, and a reinforcing plate connected to the threaded tube is provided in the longitudinal beam of the vehicle body.

[0019] Furthermore, the reinforcing plate comprises a reinforcing plate body and side flanges located on both sides of the reinforcing plate body; the threaded tube is connected to the reinforcing plate body, and the side flanges on both sides are respectively connected to two opposite side walls of the vehicle body longitudinal beam.

[0020] Furthermore, a lower flange is provided at the bottom of the reinforcing plate body, and the lower flange is connected to the bottom wall of the vehicle body longitudinal beam; and / or, a receiving groove matching the shape of the threaded tube is provided on the reinforcing plate body, and a portion of the threaded tube is located in the receiving groove.

[0021] The vehicle described in the utility model is provided with the above-mentioned subframe, which can not only improve the Z-direction rigidity of the front mounting point of the swing arm, but also make the subframe separate from the vehicle body during a collision, thereby reducing the intrusion of the subframe into the driver's cabin, thereby improving the safety performance of the entire vehicle.

[0022] In addition, the threaded tube is provided to facilitate the connection between the subframe and the vehicle body, and the provision of the reinforcing plate can increase the stability of the threaded tube. The provision of the side flange can ensure the reliability of the reinforcing plate in the longitudinal beam of the vehicle body, thereby improving the stability of the threaded tube. The provision of the lower flange can increase the reinforcing effect of the reinforcing plate. At the same time, the provision of the receiving groove can facilitate the connection between the threaded tube and the reinforcing plate, and can improve the reliability of the connection between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 It is a schematic diagram of the structure of the subframe and the vehicle body longitudinal beam when assembled according to the embodiment of the utility model;

[0025] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 It is a structural schematic diagram of the auxiliary frame according to an embodiment of the utility model;

[0027] Figure 4 for Figure 3 A schematic diagram of the structure from another perspective of the structure shown in ;

[0028] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0029] Figure 6 This is a schematic diagram of the structure of the vehicle body connecting bracket according to an embodiment of the utility model;

[0030] Figure 7 and Figure 8 It is a schematic diagram of the structure of the upper plate of the bracket according to the embodiment of the utility model at different viewing angles;

[0031] Fig. 9 This is a schematic diagram of the structure of the lower plate of the bracket according to an embodiment of the utility model;

[0032] Fig.10 It is a structural schematic diagram of the vehicle body connecting bracket and the vehicle body longitudinal beam when assembled according to an embodiment of the utility model;

[0033] Fig.11 for Fig.10 A schematic diagram of the structure from another perspective of the structure shown in ;

[0034] Fig.12 This is a schematic diagram of the structure of the threaded pipe according to an embodiment of the utility model;

[0035] Fig.13 and Fig.14 It is a schematic diagram of the structure of the reinforcing plate according to the embodiment of the utility model at different viewing angles;

[0036] Description of reference numerals:

[0037] 1. Subframe longitudinal beam; 10. Swing arm mounting slot;

[0038] 2. Car body connecting bracket; 21. Bracket upper plate; 211. Extension section; 2111. Bolt connection hole; 2112. Opening groove; 22. Bracket lower plate; 221. Lower plate lower part; 222. Lower plate upper part; 2221. Avoidance groove;

[0039] 3. Vehicle body longitudinal beam; 4. Reinforcement plate; 41. Reinforcement plate body; 410. Accommodation groove; 42. Side flange; 43. Lower flange;

[0040] 5. Threaded pipe; 6. Connecting bolts; 7. Subframe crossbeam;

[0041] h, width of the opening slot; o, center of the bolt connection hole; R, diameter of the bolt connection hole; α, angle. DETAILED DESCRIPTION

[0042] 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.

[0043] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0044] 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.

[0045] Taking the vehicle in which the subframe described in the utility model is located as an example, the directional words such as "up, down, left, right, front, and back" used in the embodiment are defined based on the up and down direction (also called the height direction, or the Z direction of the whole vehicle), the left and right direction (also called the width direction, or the Y direction of the whole vehicle), and the front and rear direction (also called the length direction, or the X direction of the whole vehicle) of the vehicle. "Inside and outside" are defined based on the contour of the corresponding parts. For example, "inside" and "outside" are defined based on the contour of the vehicle, and the side of the vehicle contour close to the middle of the vehicle is "inside", and the opposite is "outside".

[0046] In addition, in the description of the present invention, unless otherwise clearly defined, the mating parts may be connected by conventional connection structures in the art. Moreover, 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 indirectly connected through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0048] Embodiment 1

[0049] The present embodiment relates to a subframe, which can improve the Z-direction stiffness of the front mounting point of the swing arm and can be separated from the vehicle body during a collision, thereby reducing the intrusion into the driver's cabin, thereby facilitating the improvement of the collision performance of the entire vehicle.

[0050] In terms of overall structure, Figures 1 to 6 As shown, a body connecting bracket 2 is provided on the subframe longitudinal beam 1 of the subframe of this embodiment. The body connecting bracket 2 is arranged close to the front mounting point of the swing arm on the subframe longitudinal beam 1, and the body connecting bracket 2 includes a bracket upper plate 21 and a bracket lower plate 22 which are buckled together.

[0051] Secondly, the bracket lower plate 22 partially penetrates into the bracket upper plate 21 and is connected to the side wall of the bracket upper plate 21, and the top of the bracket upper plate 21 has an extension section 211 extending outward relative to the top of the bracket lower plate 22, and the extension section 211 is provided with a bolt connection hole 2111 and an opening slot 2112. In addition, the opening slot 2112 extends from the bolt connection hole 2111 to the edge of the extension section 211, and the extension direction of the opening slot 2112 is inclined relative to the left and right direction of the whole vehicle, and points to the side and front of the vehicle.

[0052] At this time, as set above, the vehicle body connecting bracket 2 can be set close to the front mounting point of the swing arm to improve the Z-direction stiffness of the front mounting point of the swing arm. At the same time, the opening groove 2112 inclined based on the extension direction can make the connecting bolt 6 disengage from the bolt connecting hole 2111 during a collision, so that the subframe is separated from the vehicle body, reducing the intrusion of the subframe into the passenger compartment, thereby helping to improve the collision safety of the vehicle.

[0053] Based on the overall introduction above, in detail, in this embodiment, in the specific implementation, the above-mentioned connecting bolt 6 is used to connect the body connecting bracket 2 and the body longitudinal beam 3, thereby forming a connection between the subframe and the body longitudinal beam 3. Specifically, it passes through the bolt connection hole 2111 from bottom to top and then is screwed with the body longitudinal beam 3. At the same time, the outer side wall of the subframe longitudinal beam 1 of this embodiment is provided with a swing arm installation groove 10 corresponding to the front installation point of the swing arm, so as to facilitate the installation of the lower swing arm, and the subframe longitudinal beam 1 is arranged in two oppositely arranged left and right, and a plurality of subframe cross beams 7 are arranged between the two subframe longitudinal beams 1 along the front and rear direction of the whole vehicle.

[0054] Moreover, considering that the structural structures of the left body connection bracket 2 (and the left subframe longitudinal beam 1) and the right body connection bracket 2 (and the right subframe longitudinal beam 1) are basically the same, and the two can be regarded as mirror images of each other, in order to facilitate a clear description of the specific structure of the subframe, in this embodiment, the left body connection bracket 2 (and the left subframe longitudinal beam 1) is taken as an example to specifically describe the relevant contents, and no further details will be given below.

[0055] In this embodiment, as a preferred implementation form, Figure 1 and Figure 3 As shown in , the vehicle body connection bracket 2 is connected to the top of the sub-frame longitudinal beam 1, and the bracket upper plate 21 and the bracket lower plate 22 are buckled together along the left-right direction of the vehicle. Therefore, it is convenient to arrange the vehicle body connection bracket 2 on the sub-frame longitudinal beam 1, and it is also convenient to make the vehicle body connection bracket 2 have better Z-direction stiffness.

[0056] In specific implementation, as a preferred implementation form, combined with Figure 3 , Figures 6 to 9As shown, in this embodiment, along the vertical direction of the whole vehicle, the cross section of the bracket upper plate 21 is in an "n" shape, and at the same time, the bracket lower plate 22 has a lower plate lower portion 221 that partially penetrates into the bracket upper plate 21, and a lower plate upper portion 222 that completely enters into the bracket upper plate 21. Moreover, from the vertical direction of the whole vehicle, the cross section of the lower plate lower portion 221 is in a "U" shape.

[0057] Here, the cross-section of the upper plate 21 of the bracket is designed to be in an "n" shape, and the cross-section of the lower plate lower part 221 is designed to be in a "U" shape, and the lower plate lower part 221 of the bracket lower plate 22 partially penetrates into the bracket upper plate 21, and the lower plate upper part 222 completely enters into the bracket upper plate 21, which can facilitate the buckling connection between the upper and lower plates of the bracket and ensure the overall structural strength of the vehicle body connection bracket 2.

[0058] It should be noted that, in the present embodiment, along the up-down direction of the vehicle, the cross section of the bracket upper plate 21 is in an "n" shape, which means that the cross section of the bracket upper plate 21 is roughly in an "n" shape in the overall structure, and does not refer to the shape of the letter "n" in a strict sense. In the specific structure, the bracket upper plate 21 may also have a certain shape trend for adapting and connecting with peripheral parts such as the bracket lower plate 22 and the subframe longitudinal beam 1.

[0059] Similarly, in the present embodiment, the cross section of the lower portion 221 of the lower plate is "U"-shaped along the up-down direction of the vehicle, which does not mean that the cross section of the lower portion 221 of the lower plate must be in the shape of the letter "U" in a strict sense, but it may also have a certain shape that can be compatible with the surrounding parts such as the bracket upper plate 21 and the subframe longitudinal beam 1.

[0060] Furthermore, in this embodiment, as a preferred implementation form, the cross section of the lower plate upper part 222 is "M" shaped when viewed from the upper and lower directions of the vehicle, and an avoidance groove 2221 is formed on the lower plate upper part 222 below the extension section 211. The main advantage of this arrangement is that it is easy to operate the connecting bolt 6 and can also increase the rigidity of the connection position with the vehicle body.

[0061] Of course, the cross-section of the upper part 222 of the lower plate is in an "M" shape, which means that the cross-section of the upper part 222 of the lower plate is roughly in an "M" shape in the overall structure. It does not mean that the cross-section of the upper part 222 of the lower plate must be in the shape of the letter "M" in a strict sense. It can have a certain shape trend in order to achieve a better adaptation effect with the surrounding parts such as the upper plate 21 of the bracket and the connecting bolts 6.

[0062] In addition, in this embodiment, as a preferred implementation form, refer to Figure 7 As shown, the width h of the opening groove 2112 is smaller than the diameter R of the bolt connection hole 2111 , so that the reliability of the bolt connection can be ensured on the basis of achieving bolt disengagement.

[0063] It can be understood that, based on the setting of the opening groove 2112, the connecting bolt 6 can cause the extension section 211, especially the part corresponding to the opening groove 2112 and the bolt connecting hole 2111 on the extension section 211 to deform during a collision. For example, the two opposite groove walls of the opening groove 2112 are deformed so that the width h of the opening groove 2112 becomes larger, approaching or even larger than the diameter R of the bolt connecting hole 2111 (that is, the diameter of the connecting bolt 6), thereby causing the connecting bolt 6 to fall out.

[0064] In addition, in this embodiment, as a preferred implementation form, see Figure 4 and Figure 5 As shown, the angle α between the extending direction of the opening slot 2112 and the left-right direction of the vehicle is between 15° and 25°. Here, the angle α between the extending direction of the opening slot 2112 and the left-right direction of the vehicle is set between 15° and 25°, which is conducive to the connection bolt 6 being disengaged along the side front direction of the vehicle during a collision, thereby facilitating the subframe to be separated from the vehicle body.

[0065] It should be mentioned that, in order to facilitate the illustration of the angle α, in this embodiment Figure 5 In the figure, the center of the bolt connection hole 2111 is indicated as o, the center line in the horizontal state is the left-right direction of the vehicle, and the center line in the inclined state is the extension direction of the opening slot 2112. Furthermore, in a specific implementation, the angle α can be specifically set to 20° or 25°, so that the connection bolt 6 can be disengaged from the bolt connection hole 2111 and through the opening slot 2112 in the event of a collision.

[0066] The sub-frame of the present embodiment is arranged close to the front mounting point of the swing arm through the vehicle body connecting bracket 2, so that the Z-direction stiffness of the front mounting point of the swing arm can be improved. In addition, through the arrangement of the opening groove 2112 at the vehicle body connecting hole, the sub-frame connecting bolt 6 can be disengaged from the vehicle body connecting hole during a collision, so that the sub-frame is separated from the vehicle body, thereby reducing the intrusion of the sub-frame into the driver's cabin, and helping to improve the collision safety of the vehicle.

[0067] Embodiment 2

[0068] This embodiment relates to a vehicle, such as Figure 1 , Fig.10 and Fig.11 As shown in , the vehicle is provided with the subframe in the first embodiment, and the vehicle body connecting bracket 2 is connected to the vehicle body longitudinal beam 3 via the connecting bolts 6 provided in the bolt connecting holes 2111 .

[0069] Of course, the Figure 1 , Fig.10 and Fig.11Only a partial structure of the vehicle body longitudinal beam 3 is shown. The vehicle body longitudinal beam 3 and related structural parts not mentioned in the vehicle body of this embodiment can all refer to the vehicle body structure well known to those skilled in the art. For example, the vehicle body longitudinal beam 3 in the vehicle body is two vehicle body longitudinal beams 3 arranged opposite to each other in the left-right direction of the vehicle. Each vehicle body longitudinal beam 3 is respectively connected to the vehicle body connecting bracket 2 on the same side. At the same time, each vehicle body longitudinal beam 3 is mainly composed of two sheet metal parts that are buckled and connected in the left-right direction of the vehicle, and a reinforcing sheet metal part may also be provided in the cavity enclosed by the two sheet metal parts.

[0070] Furthermore, considering that the structures of the left and right side vehicle body longitudinal beams 3 are substantially the same and the two can be regarded as mirror images of each other, in order to facilitate the detailed description of the relevant contents, in this embodiment, the left side vehicle body longitudinal beam 3 and the left side vehicle body connecting bracket 2 are taken as examples for the specific description of the relevant contents, and no further description is given below.

[0071] At this time, in this embodiment, as a preferred implementation form, combined with Figure 2 , Figures 10 to 12 As shown, a threaded tube 5 is provided in the vehicle body longitudinal beam 3 , a connecting bolt 6 is connected to the threaded tube 5 , and a reinforcing plate 4 connected to the threaded tube 5 is provided in the vehicle body longitudinal beam 3 .

[0072] In this way, the threaded tube 5 can be provided to facilitate the connection between the subframe and the vehicle body, and the reinforcement plate 4 can also be provided to increase the stability of the threaded tube 5 .

[0073] In the specific implementation, in this embodiment, as a preferred implementation form, refer to Fig.10 , Fig.13 and Fig.14 As shown in , the reinforcing plate 4 has a reinforcing plate body 41 and side flanges 42 located on both sides of the reinforcing plate body 41. In the specific structure, the threaded tube 5 is connected to the reinforcing plate body 41, and the side flanges 42 on both sides are connected to two opposite side walls of the vehicle body longitudinal beam 3 respectively.

[0074] It is understandable that the benefit of providing the side flange 42 is mainly that it can ensure the reliability of the reinforcement plate 4 in the vehicle body longitudinal beam 3, and at the same time, it can also further improve the stability of the threaded tube 5.

[0075] Furthermore, as a preferred implementation form, in this embodiment, a lower flange 43 is provided at the bottom of the reinforcing plate body 41, and the lower flange 43 is connected to the bottom wall of the vehicle body longitudinal beam 3, thereby improving the connection strength between the reinforcing plate 4 and the vehicle body longitudinal beam 3, so as to increase the structural reinforcement effect of the reinforcing plate 4.

[0076] At the same time, in this embodiment, as a preferred implementation form, a receiving groove 410 matching the shape of the threaded tube 5 is provided on the reinforcing plate body 41, and a portion of the threaded tube 5 is located in the receiving groove 410. In this way, it is not only convenient to connect the threaded tube 5 and the reinforcing plate 4, but also can improve the reliability of the connection between the two.

[0077] In this embodiment, during specific implementation, the connecting bolt 6 can be passed through the bolt connecting hole 2111 and the bottom wall of the vehicle body longitudinal beam 3 in sequence and then screwed into the threaded tube 5. At the same time, the threaded tube 5 and the reinforcing plate body 41, the side flanges 42 on both sides and the two opposite side walls of the vehicle body longitudinal beam 3, and the lower flange 43 and the bottom wall of the vehicle body longitudinal beam 3 can all be connected by a connection method commonly used by technicians in this field, such as welding.

[0078] The vehicle of this embodiment is provided with the subframe in the first embodiment, which can improve the Z-direction stiffness of the front mounting point of the swing arm and reduce the intrusion of the subframe into the passenger compartment during a collision, thereby improving the safety quality of the entire vehicle.

[0079] 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 subframe, characterized in that: A vehicle body connection bracket (2) is provided on the sub-frame longitudinal beam (1) of the sub-frame, the vehicle body connection bracket (2) is arranged close to the front mounting point of the swing arm on the sub-frame longitudinal beam (1), and the vehicle body connection bracket (2) comprises a bracket upper plate (21) and a bracket lower plate (22) which are buckled together; The bracket lower plate (22) partially penetrates into the bracket upper plate (21) and is connected to the side wall of the bracket upper plate (21), and the top of the bracket upper plate (21) has an extension section (211) extending outward relative to the top of the bracket lower plate (22), and the extension section (211) is provided with a bolt connection hole (2111) and an opening groove (2112); The opening groove (2112) extends from the bolt connection hole (2111) to the edge of the extension section (211), and the extension direction of the opening groove (2112) is inclined relative to the left and right direction of the vehicle and points to the side and front of the vehicle.

2. The subframe according to claim 1, characterized in that: The vehicle body connection bracket (2) is connected to the top of the auxiliary frame longitudinal beam (1), and the bracket upper plate (21) and the bracket lower plate (22) are buckled together along the left-right direction of the vehicle.

3. The subframe according to claim 1, characterized in that: Along the vertical direction of the vehicle, the cross section of the upper plate (21) of the support is in an "n" shape; The support lower plate (22) comprises a lower plate lower portion (221) partially penetrating into the support upper plate (21), and a lower plate upper portion (222) completely entering into the support upper plate (21); Along the up-down direction of the vehicle, the cross section of the lower portion (221) of the lower plate is in a "U" shape.

4. The subframe according to claim 3, characterized in that: Along the up-down direction of the vehicle, the cross section of the upper portion (222) of the lower plate is in an "M" shape, and an avoidance groove (2221) located below the extension section (211) is formed on the upper portion (222) of the lower plate.

5. The subframe according to claim 1, characterized in that: The width (h) of the opening groove (2112) is smaller than the diameter (R) of the bolt connection hole (2111).

6. The subframe according to any one of claims 1 to 5, characterized in that: The angle (α) between the extension direction of the opening slot (2112) and the left-right direction of the entire vehicle is between 15° and 25°.

7. A vehicle, characterized in that: The vehicle is provided with a subframe as claimed in any one of claims 1 to 6, and the vehicle body connecting bracket (2) is connected to the vehicle body longitudinal beam (3) via connecting bolts (6) provided in the bolt connecting holes (2111).

8. The vehicle according to claim 7, characterized in that: A threaded tube (5) is provided in the vehicle body longitudinal beam (3), the connecting bolt (6) is connected to the threaded tube (5), and a reinforcing plate (4) connected to the threaded tube (5) is provided in the vehicle body longitudinal beam (3).

9. The vehicle according to claim 8, characterized in that: The reinforcing plate (4) comprises a reinforcing plate body (41) and side flanges (42) located on both sides of the reinforcing plate body (41); The threaded tube (5) is connected to the reinforcing plate body (41), and the side flanges (42) on both sides are respectively connected to two opposite side walls of the vehicle body longitudinal beam (3).

10. The vehicle according to claim 9, characterized in that: The bottom of the reinforcing plate body (41) is provided with a lower flange (43), and the lower flange (43) is connected to the bottom wall of the vehicle body longitudinal beam (3); and / or, The reinforcing plate body (41) is provided with a receiving groove (410) matching the shape of the threaded tube (5), and a portion of the threaded tube (5) is located in the receiving groove (410).

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