Rear auxiliary frame mounting structure and vehicle

Abstract

The utility model discloses a rear subframe installation structure and a vehicle, the rear subframe installation structure comprises an installation support, a first reinforcing piece and a second reinforcing piece, the installation support is installed at the joint of a rear floor longitudinal beam and a rear floor cross beam, the first reinforcing piece is arranged on the inner side of the connecting position of the rear floor longitudinal beam and the rear floor transverse beam, the second reinforcing piece is arranged on the outer side of the connecting position of the rear floor longitudinal beam and the rear floor transverse beam, and the first reinforcing piece is arranged around the rear floor transverse beam and connected with the rear floor longitudinal beam. By means of the first reinforcing piece and the second reinforcing piece, when the rear auxiliary frame installation position is stressed and transmitted to the rear floor beam on the inner side of the rear auxiliary frame installation position and the beam reinforcing plate on the outer side of the rear auxiliary frame installation position, force transmission is more stable, and meanwhile the rear auxiliary frame installation strength of a vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a rear subframe mounting structure and a vehicle. Background Art

[0002] The rear subframe is an important load-bearing component for the rear-wheel drive layout of a vehicle, and the mounting points between it and the vehicle body have higher requirements for structural strength, stiffness, and durability. In the prior art, the connection between the rear floor crossbeam and the rear floor longitudinal beam is the mounting position of the rear subframe, and the rear subframe is mounted on the rear floor longitudinal beam through a mounting bracket. However, the force transmission path at the rear subframe mounting position is relatively single, and it can only be transmitted from the mounting bracket to the rear floor longitudinal beam or from the mounting bracket to the rear floor crossbeam. The dynamic stiffness of the rear subframe mounting position is low, and the ability to attenuate vibration is weak. At the same time, the strength of the rear subframe needs to be improved. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art, namely, the single force transmission path at the rear subframe mounting position and the need to improve the strength of the rear subframe.

[0004] To this end, an object of the utility model is to provide a rear subframe mounting structure, which includes a mounting bracket, a first reinforcing member, and a second reinforcing member. The mounting bracket is mounted at the connection between the rear floor longitudinal beam and the rear floor crossbeam. The first reinforcing member is arranged inside the connection between the rear floor longitudinal beam and the rear floor crossbeam. The second reinforcing member is arranged outside the connection between the rear floor longitudinal beam and the rear floor crossbeam. The first reinforcing member surrounds the rear floor crossbeam and is connected to the rear floor longitudinal beam.

[0005] In some embodiments, the mounting bracket is vertically mounted inside the rear floor longitudinal beam and is connected to the rear floor crossbeam.

[0006] In some embodiments, the mounting bracket is provided with a longitudinal beam mounting surface, and a plurality of first reinforcing ribs are arranged inside the rear floor longitudinal beam. The mounting bracket is connected to the longitudinal beam mounting surface and the first reinforcing ribs.

[0007] In some embodiments, the first reinforcing member includes a bottom plate and an annular connecting plate arranged on the bottom plate. The annular connecting plate has a mounting cavity for connecting to the rear floor crossbeam.

[0008] In some embodiments, a plurality of second reinforcing ribs are arranged between the annular connecting plate and the bottom plate, and the plurality of second reinforcing ribs surround the annular connecting plate.

[0009] In some embodiments, the second reinforcing rib is a triangular reinforcing rib plate.

[0010] In some embodiments, a crossmember reinforcement plate connected to the rear floor longitudinal beam is provided on the outer side of the connection between the rear floor longitudinal beam and the rear floor crossmember, and the second reinforcement member is connected to the rear floor longitudinal beam and the crossmember reinforcement plate to form a closed reinforcement cavity.

[0011] In some embodiments, a connecting flange is provided at the edge of the second reinforcement member.

[0012] In some embodiments, the cross-section of the second reinforcement member is triangular.

[0013] Another object of the present invention is to provide a vehicle including the above-mentioned rear subframe mounting structure.

[0014] The rear subframe mounting structure and the vehicle provided by the embodiments of the present invention have the following beneficial effects:

[0015] The rear subframe mounting structure includes a mounting bracket, a first reinforcement member, and a second reinforcement member. The mounting bracket is mounted at the connection between the rear floor longitudinal beam and the rear floor crossmember. The first reinforcement member is provided inside the connection between the rear floor longitudinal beam and the rear floor crossmember. The second reinforcement member is provided outside the connection between the rear floor longitudinal beam and the rear floor crossmember. The first reinforcement member surrounds the rear floor crossmember and is connected to the rear floor longitudinal beam. There are four-direction force transmission channels between the rear subframe mounting position and the rear floor longitudinal beam and the rear floor crossmember. There are more force transmission channels between the rear subframe mounting position and the rear floor longitudinal beam and the rear floor crossmember, which ensures the stability of the force transmission channels. Moreover, the first reinforcement member and the second reinforcement member can improve the connection strength between the rear floor longitudinal beam and the rear floor crossmember. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a first perspective three-dimensional view of a rear subframe mounting structure in an embodiment of the present invention;

[0018] Figure 2 is a second perspective three-dimensional view of a rear subframe mounting structure in an embodiment of the present invention;

[0019] Figure 3 is a partial enlarged view of a second reinforcement member of a rear subframe mounting structure in an embodiment of the present invention;

[0020] Figure 4It is a schematic diagram of the connection between the mounting bracket of a rear subframe mounting structure and the longitudinal beam of the rear floor in an embodiment of the present utility model;

[0021] Figure 5 It is a three-dimensional view of a first reinforcing member of a rear subframe mounting structure in an embodiment of the present utility model;

[0022] Figure 6 It is a three-dimensional view of a second reinforcing member of a rear subframe mounting structure in an embodiment of the present utility model.

[0023] Reference numerals:

[0024] 1, mounting bracket; 11, longitudinal beam mounting surface; 12, first reinforcing rib; 2, first reinforcing member; 21, bottom plate; 22, annular connecting plate; 23, mounting cavity; 24, second reinforcing rib; 3, second reinforcing member; 31, reinforcing cavity; 32, connecting flange; 321, first connecting flange; 322, second connecting flange; 4, cross beam reinforcing plate; 5, first fastener; 6, second fastener; 100, rear floor longitudinal beam; 200, rear floor cross beam. Detailed implementation manners

[0025] Reference is made herein to the various solutions and features of the present utility model with reference to the accompanying drawings.

[0026] It should be understood that various modifications can be made to the embodiments applied herein. Therefore, the above description should not be regarded as a limitation, but only as an example of the embodiments. Those skilled in the art will think of other modifications within the scope and spirit of the present utility model.

[0027] The accompanying drawings included in the specification and constituting a part of the specification illustrate the embodiments of the present utility model, and together with the general description of the present utility model given above and the detailed description of the embodiments given below are used to explain the principles of the present utility model.

[0028] These and other characteristics of the present utility model will become apparent from the following description of the preferred forms of the embodiments given by way of non-limiting examples with reference to the accompanying drawings.

[0029] It should also be understood that although the present utility model has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present utility model, which have the features as described in the claims and thus are all within the protection scope defined hereby.

[0030] When combined with the accompanying drawings, in view of the following detailed description, the above and other aspects, features and advantages of the present utility model will become more apparent.

[0031] Specific embodiments of the present utility model will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are merely examples of the present utility model, which can be implemented in various ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present utility model with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but are merely used as a basis and representative basis for the claims to teach those skilled in the art to use the present utility model in substantially any suitable detailed structure in a variety of ways.

[0032] In the present utility model, the rear subframe mounting position refers to the mounting position of the mounting bracket 1; the inner side of the connection between the rear floor longitudinal beam 100 and the rear floor cross beam 200 refers to the inner side of the vehicle; the outer side of the connection between the rear floor longitudinal beam 100 and the rear floor cross beam 200 refers to the outer side of the vehicle; the Y direction refers to the vehicle width direction, and the Z direction refers to the vehicle height direction.

[0033] The first embodiment of the present utility model provides a rear subframe mounting structure, as Figures 1-6 shown. The rear subframe mounting structure includes a mounting bracket 1, a first reinforcing member 2, and a second reinforcing member 3. The mounting bracket 1 is mounted at the connection of the rear floor longitudinal beam 100 and the rear floor cross beam 200. The first reinforcing member 2 is disposed inside the connection of the rear floor longitudinal beam 100 and the rear floor cross beam 200, and the second reinforcing member 3 is disposed outside the connection of the rear floor longitudinal beam 100 and the rear floor cross beam 200. A cross beam reinforcing plate 4 connected to the rear floor longitudinal beam 100 is provided outside the connection of the rear floor longitudinal beam 100 and the rear floor cross beam 200.

[0034] Specifically, generally two rear floor longitudinal beams 100 are spaced apart, and a rear floor cross beam 200 is connected between the two rear floor longitudinal beams 100. The first reinforcing member 2 and the second reinforcing member 3 are respectively disposed inside and outside the connection of the rear floor longitudinal beam 100 and the rear floor cross beam 200. After the rear subframe mounting position is stressed, the force can be transmitted along the rear floor longitudinal beam 100 to both sides of the rear subframe mounting position, or can be transmitted along the first reinforcing member 2 and the second reinforcing member 3 to the rear floor cross beam 200 and the cross beam reinforcing plate 4 respectively. When the rear subframe is stressed, there are more force transmission channels, ensuring the stability of force transmission and at the same time improving the mounting strength of the rear subframe of the vehicle.

[0035] Among them, the first reinforcing member 2 is disposed around the rear floor cross beam 200 and is connected to the rear floor longitudinal beam 100. While optimizing the force transmission channel, the first reinforcing member 2 is disposed around the rear floor cross beam 200, which is beneficial to improving the strength of the rear floor cross beam 200 and the connection strength between the rear floor longitudinal beam 100 and the rear floor cross beam 200.

[0036] As Figure 2 and Figure 5As shown, the first reinforcing member 2 includes a bottom plate 21 and an annular connecting plate 22 provided on the bottom plate 21. The annular connecting plate 22 has an installation cavity 23 for connecting with the rear floor crossbeam 200. Among them, the bottom plate 21 is connected to the rear floor longitudinal beam 100, increasing the Y-direction connecting area between the installation bracket 1 and the rear floor crossbeam 200, and improving the dynamic stiffness of the rear subframe installation position. The annular connecting plate 22 is sleeved outside the rear floor crossbeam 200 and connected to the rear floor crossbeam 200, that is, the rear floor crossbeam 200 is arranged in the installation cavity 23 of the annular connecting plate 22. Among them, the annular connecting plate 22 can be set as a closed annular structure formed by sequentially connecting four plate-like structures to wrap the side wall of the rear floor crossbeam 200 and strengthen the overall strength of the rear floor crossbeam 200; the annular connecting plate 22 can also be set as an open annular structure formed by sequentially connecting three plate-like structures, and the open structure is beneficial to the close fit between the rear floor crossbeam 200 and the annular connecting plate 22, making the assembly more convenient.

[0037] The first reinforcing member 2 can be used as a connecting member to realize the connection between the rear floor longitudinal beam 100 and the rear floor crossbeam 200. That is, when installing the rear floor longitudinal beam 100 and the rear floor crossbeam 200, first connect the base with the rear floor longitudinal beam 100 through the first fastener 5, and then connect the annular connecting plate 22 with the rear floor crossbeam 200 through the first fastener 5. The first reinforcing member 2 can also be only used as a reinforcing member. After the rear floor longitudinal beam 100 and the rear floor crossbeam 200 are connected together, the first reinforcing member 2 is installed to improve the connection strength between the rear floor longitudinal beam 100 and the rear floor crossbeam 200. Exemplarily, the first fastener 5 is a blind rivet.

[0038] A plurality of second reinforcing ribs 24 are provided between the annular connecting plate 22 and the bottom plate 21, and the plurality of second reinforcing ribs 24 are arranged around the annular connecting plate 22. Arranging the plurality of second reinforcing ribs 24 can increase the strength of the rear subframe installation position and increase the Y-direction force transmission channel between the rear subframe installation position and the rear floor crossbeam 200, making the force transmission more stable.

[0039] The second reinforcing rib 24 is a triangular reinforcing rib plate, and by using the stability of the triangle, the strength of the rear subframe installation position is further improved. The second reinforcing rib 24 can also be an L-shaped reinforcing rib bar, and the L-shaped reinforcing rib bar includes a first section and a second section, and the first section and the second section are respectively connected to the bottom plate 21 and the side wall of the annular connecting plate 22.

[0040] Such as Figure 3 and Figure 6As shown in the figure, a crossbeam reinforcement plate 4 connected to the rear floor longitudinal beam 100 is provided on the outer side of the connection between the rear floor longitudinal beam 100 and the rear floor crossbeam 200. The second reinforcement member 3 is connected to the rear floor longitudinal beam 100 and the crossbeam reinforcement plate 4 to form a closed reinforcement cavity 31. This closed reinforcement cavity 31 is beneficial to improving the strength of the connection between the rear floor longitudinal beam 100 and the rear floor crossbeam 200, and making the force transmission between the rear floor longitudinal beam 100 and the crossbeam reinforcement plate 4 more stable.

[0041] The cross-section of the second reinforcement member 3 is triangular. By using the stability of the triangle, the connection stability between the second reinforcement member 3, the crossbeam reinforcement plate 4 and the rear floor longitudinal beam 100 is ensured. In addition, the cross-section of the second reinforcement member 3 can also be set in a rectangular or trapezoidal shape.

[0042] Among them, the second reinforcement member 3 can also be set as a solid structure. At this time, the second reinforcement member 3 can be regarded as a reinforcing rib to ensure the connection stability between the second reinforcement member 3, the crossbeam reinforcement plate 4 and the rear floor longitudinal beam 100. Exemplarily, the cross-section of this reinforcing rib is triangular, rectangular or trapezoidal.

[0043] A connecting flange 32 is provided at the edge of the second reinforcement member 3. Exemplarily, the second reinforcement member 3 is connected to the rear floor longitudinal beam 100 through at least one first connecting flange 32132 by a second fastener 6, and the second reinforcement member 3 is connected to the crossbeam reinforcement plate 4 through at least one second connecting flange 32232 by a second fastener 6. The second fastener 6 is a blind rivet.

[0044] As Figure 4 shown in the figure, the mounting bracket 1 is vertically mounted in the rear floor longitudinal beam 100 and is connected to the rear floor crossbeam 200. That is, the mounting bracket 1 extends into the vehicle longitudinal beam from the first side in the Z direction of the vehicle and passes through the rear floor longitudinal beam 100 from the second side in the Z direction of the vehicle. The mounting bracket 1 is connected to the rear floor longitudinal beam 100 by welding, and the rear floor crossbeam 200 is connected to the rear floor longitudinal beam 100 by riveting, which is beneficial to improving the force transmission performance of the vehicle body in the X and Y directions.

[0045] A longitudinal beam mounting surface 11 is provided on the mounting bracket 1, and a plurality of first reinforcing ribs 12 are provided in the rear floor longitudinal beam 100. The mounting bracket 1 is connected to the longitudinal beam mounting surface 11 and the first reinforcing ribs 12. Among them, the longitudinal beam mounting surface 11 includes the mounting surface on the first side and the mounting surface on the second side of the rear floor longitudinal beam 100. The rear floor longitudinal beam 100 and the mounting bracket 1 are connected through the longitudinal beam mounting surface 11 and the first reinforcing ribs 12, increasing the number of connection positions between the rear floor longitudinal beam 100 and the mounting bracket 1 and ensuring the connection strength between the two. Exemplarily, the mounting surface is connected to the mounting bracket 1 by welding.

[0046] Since the aluminum structure has a relatively low density but high strength, the first reinforcing member 2 and the second reinforcing member 3 are aluminum extrusions. While reducing the self-weight of the vehicle body structure, the structural stability and safety are improved.

[0047] The second embodiment of the present invention provides a vehicle, including the above-mentioned rear subframe mounting structure.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation of the present invention.

[0049] In the description of the present invention, the "first feature" and the "second feature" may include one or more of such features.

[0050] In the description of the present invention, the meaning of "a plurality" is two or more.

[0051] In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0052] In the description of the present invention, the first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0053] In the description of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. 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 invention. 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 may be combined in a suitable manner in any one or more embodiments or examples.

[0054] Although embodiments of the present utility model 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 utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A rear subframe mounting structure, characterized in that: The invention comprises a mounting bracket, a first reinforcement and a second reinforcement, wherein the mounting bracket is mounted at the connection between the rear floor longitudinal beam and the rear floor cross beam, the first reinforcement is arranged at the inner side of the connection between the rear floor longitudinal beam and the rear floor cross beam, the second reinforcement is arranged at the outer side of the connection between the rear floor longitudinal beam and the rear floor cross beam, and the first reinforcement is arranged around the rear floor cross beam and connected to the rear floor longitudinal beam.

2. A rear subframe mounting structure according to claim 1, characterized in that: The mounting bracket is vertically mounted in the rear floor longitudinal beam and connected to the rear floor cross beam.

3. A rear subframe mounting structure according to claim 2, characterized in that: The mounting bracket is provided with a longitudinal beam mounting surface, the rear floor longitudinal beam is provided with a plurality of first reinforcing ribs, and the mounting bracket is connected to the longitudinal beam mounting surface and the first reinforcing ribs.

4. The rear subframe mounting structure according to claim 1, characterized in that: The first reinforcement member includes a bottom plate and an annular connecting plate disposed on the bottom plate, wherein the annular connecting plate has an installation cavity connected to the rear floor cross member.

5. The rear subframe mounting structure according to claim 4, characterized in that: A plurality of second reinforcing ribs are provided between the annular connecting plate and the bottom plate, and the plurality of second reinforcing ribs are arranged around the annular connecting plate.

6. A rear subframe mounting structure according to claim 5, characterized in that: The second reinforcing rib is a triangular reinforcing rib plate.

7. The rear subframe mounting structure according to claim 1, characterized in that: A crossbeam reinforcement plate connected to the rear floor longitudinal beam is provided on the outer side of the connection between the rear floor longitudinal beam and the rear floor crossbeam, and the second reinforcement member is connected to the rear floor longitudinal beam and the crossbeam reinforcement plate to form a closed reinforcement cavity.

8. The rear subframe mounting structure according to claim 7, characterized in that: The edge of the second reinforcement member is provided with a connecting flange.

9. The rear subframe mounting structure according to claim 7, characterized in that: The second reinforcement member has a triangular cross section.

10. A vehicle, characterized in that: A rear subframe mounting structure comprising any one of claims 1-9.

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