Subframe assembly, vehicle and motor support

Abstract

The utility model discloses a subframe assembly, vehicle and motor support. Subframe assembly includes: subframe, the subframe includes the beam body, and first motor support, first motor support includes first installation part and second installation part, first installation part with the beam body is along the first direction arrangement, first installation part with the beam body is connected, second installation part with the beam body is along the second direction arrangement, second installation part with the beam body is connected, first direction is perpendicular to second direction. The subframe assembly of the utility model has the advantages of high modal frequency and dynamic stiffness, high vibration isolation rate, and can effectively improve the NVH performance of the vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a motor bracket and a subframe assembly, and also to a vehicle having the subframe assembly. Background Technology

[0002] Motor mounts are primarily used to connect the motor to the vehicle frame. As vehicle performance improves, the driving torque of the motor also increases, leading to greater torque output during operation and increased vibration transmission. Simultaneously, rising demands for vehicle comfort and vibration / noise control necessitate sufficiently high dynamic stiffness at the motor mount mounting points. Current motor mount technologies suffer from insufficient dynamic stiffness at their mounting points. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes a subframe assembly, a vehicle, and a motor bracket.

[0004] The subframe assembly of this utility model includes: a subframe, the subframe including a beam; and a first motor bracket, the first motor bracket including a first mounting part and a second mounting part, the first mounting part and the beam being arranged along a first direction and connected to the beam, the second mounting part and the beam being arranged along a second direction and connected to the beam, the first direction being perpendicular to the second direction.

[0005] The subframe assembly of this invention has the advantages of high modal frequency and dynamic stiffness, and high vibration isolation rate, which can effectively improve the NVH performance of the vehicle.

[0006] Optionally, the first mounting part is connected to the beam body by a first fastener, the first fastener extending along the first direction, and the second mounting part is connected to the beam body by a second fastener, the second fastener extending along the second direction; or the first mounting part is welded to the beam body, and the second mounting part is welded to the beam body.

[0007] Optionally, the first motor bracket includes: a frame; two first mounting portions, each of which is disposed on the frame and extends from the frame in opposite directions along a third direction, the third direction being perpendicular to the first direction and the second direction; and a second mounting portion, which is disposed on the frame and extends from the frame along the first direction.

[0008] Optionally, the first motor bracket includes: a frame, with the first mounting portion and the second mounting portion disposed on the frame; and a first vibration isolator, disposed on the frame, the first vibration isolator having a motor mounting portion extending along a third direction, the third direction being perpendicular to the first direction and the second direction.

[0009] Optionally, the first vibration isolator includes an inner core, the inner core having a motor mounting hole extending along the third direction, the motor mounting hole constituting the motor mounting portion.

[0010] Optionally, the second mounting portion has a mounting hole extending along the second direction, and the first motor bracket further includes an insert located within the mounting hole, a portion of which extends out of the mounting hole and abuts against the beam. One of the wall surface of the mounting hole and the insert is provided with a protrusion, and the other of the wall surface of the mounting hole and the insert is interference-fitted with the protrusion.

[0011] Optionally, there are multiple protrusions, which are spaced apart circumferentially along the mounting hole, and the circumferential spacing angle between two adjacent protrusions in the mounting hole is greater than or equal to a preset angle.

[0012] Optionally, the wall of the mounting hole and the other of the insert are provided with teeth, which are interference fit with the protrusion.

[0013] Optionally, there are multiple teeth, and the multiple teeth are disposed along the entire circumference of the mounting hole on the wall of the mounting hole and the other of the insert; and / or the teeth are triangular teeth or trapezoidal teeth.

[0014] Optionally, the beam includes a first crossbeam and a second crossbeam, the first crossbeam and the second crossbeam are spaced apart along the second direction, the first mounting part and the first crossbeam are arranged along the first direction, the first mounting part and the first crossbeam are connected, the second mounting part and the first crossbeam are arranged along the second direction, and the second mounting part and the first crossbeam are connected.

[0015] Optionally, the second crossbeam is provided with a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are spaced apart along a third direction, the first mounting hole and the second mounting hole are both open towards the second direction, the third direction is perpendicular to the first direction and the second direction, wherein the subframe assembly further includes a second motor bracket and a third motor bracket, the second motor bracket is interference-fitted to the first mounting hole, and the third motor bracket is interference-fitted to the second mounting hole.

[0016] Optionally, the first mounting hole opens in the direction away from the first crossbeam along the second direction, and the second mounting hole opens in the direction away from the first crossbeam along the second direction; or the first mounting hole passes through the second crossbeam along the second direction, and the second mounting hole passes through the second crossbeam along the second direction.

[0017] The vehicle of this utility model includes: a subframe assembly, the subframe assembly being the subframe assembly described in this utility model; and a motor, the motor being mounted on a first motor bracket of the subframe assembly.

[0018] The vehicle of this invention has the advantage of good NVH performance.

[0019] The motor bracket of this utility model includes: a frame; a first mounting part, which is disposed on the frame and in a mounting hole extending along a first direction; and a second mounting part, which is disposed on the frame and in a mounting hole extending along a second direction, wherein the first direction is perpendicular to the second direction.

[0020] The motor bracket of this invention has the advantages of high modal frequency and dynamic stiffness, and high vibration isolation rate, which can effectively improve the NVH performance of the vehicle.

[0021] Optionally, the motor bracket further includes a first vibration isolation member disposed on the frame body. The first vibration isolation member includes an inner core, and the inner core has a motor mounting hole extending along the third direction, which is perpendicular to the first direction and the second direction.

[0022] Optionally, the second mounting portion has a mounting hole extending along the second direction, and the motor bracket further includes an insert located within the mounting hole, wherein one of the wall surface of the mounting hole and the insert is provided with a protrusion, and the other of the wall surface of the mounting hole and the insert is interference-fitted with the protrusion.

[0023] Optionally, there are multiple protrusions, which are spaced apart circumferentially along the mounting hole, and the circumferential spacing angle between two adjacent protrusions in the mounting hole is greater than or equal to a preset angle.

[0024] Optionally, the wall of the mounting hole and the other of the insert are provided with teeth, which are interference fit with the protrusion.

[0025] Optionally, there are multiple teeth, and the multiple teeth are disposed along the entire circumference of the mounting hole on the wall of the mounting hole and the other of the insert; and / or the teeth are triangular teeth or trapezoidal teeth. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the subframe assembly according to an embodiment of the present utility model; Figure 2 This is a structural schematic diagram of the subframe assembly according to an embodiment of the present utility model; Figure 3 This is a partial enlarged view of the subframe assembly according to an embodiment of the present utility model; Figure 4 This is a partial enlarged view of the subframe assembly according to an embodiment of the present utility model; Figure 5 This is a structural schematic diagram of the subframe assembly according to an embodiment of the present utility model.

[0027] Figure label: Subframe assembly 100 First motor bracket 1, first mounting part 11, second mounting part 12, mounting hole 121, wall surface 122, frame body 13, assembly hole 131, first vibration isolator 14, motor mounting part 141, inner core 142, motor mounting hole 143, fastener 144, insert 15, toothed part 151, through hole 152, protrusion 16. Subframe 2, beam 21, first crossbeam 211, second crossbeam 212, first longitudinal beam 213, second longitudinal beam 214, first mounting hole 215, second mounting hole 216. First fastener 31, second fastener 32, head 321 Second motor bracket 4, third motor bracket 5 Detailed Implementation The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] The subframe assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings. Figures 1-5 As shown, the subframe assembly 100 according to an embodiment of the present invention includes a subframe 2 and a first motor bracket 1.

[0029] The subframe 2 includes a beam 21. The first motor bracket 1 includes a first mounting portion 11 and a second mounting portion 12. The first mounting portion 11 and the beam 21 are arranged along a first direction and are connected to each other. The second mounting portion 12 and the beam 21 are arranged along a second direction and are connected to each other. The first direction is perpendicular to the second direction.

[0030] By arranging the first mounting part 11 and the beam 21 along a first direction and connecting the first mounting part 11 and the beam 21, the first motor bracket 1 can be mounted on the subframe 2 along the first direction. By arranging the second mounting part 12 and the beam 21 along a second direction and connecting the second mounting part 12 and the beam 21, the first motor bracket 1 can be mounted on the subframe 2 along the second direction.

[0031] Therefore, the first motor bracket 1 can be installed on the subframe 2 in two mutually perpendicular directions, so that the first motor bracket 1 generally forms a semi-enclosed structure, thereby locally reinforcing the beam 21 of the subframe 2, so as to improve the local stiffness of the part of the beam 21 where the first motor bracket 1 is installed, and at the same time increasing the local modes of the first motor bracket 1 and the subframe 2.

[0032] This can effectively improve the modal frequency and dynamic stiffness of the first motor bracket 1, thereby effectively improving the vibration isolation rate of the first motor bracket 1, giving the first motor bracket 1 better vibration isolation performance, and thus improving the NVH performance of the vehicle.

[0033] Therefore, the subframe assembly 100 according to the present invention has advantages such as high modal frequency and dynamic stiffness, and high vibration isolation rate, which can effectively improve the NVH performance of the vehicle.

[0034] like Figures 1-5 As shown, the subframe assembly 100 includes a subframe 2 and a first motor bracket 1. The subframe 2 includes a beam 21, which includes a first crossbeam 211, a second crossbeam 212, a first longitudinal beam 213, and a second longitudinal beam 214.

[0035] The first crossbeam 211 and the second crossbeam 212 are spaced apart along a second direction, and both the first crossbeam 211 and the second crossbeam 212 extend along a third direction. The first motor bracket 1 can be installed on either the first crossbeam 211 or the second crossbeam 212. The first longitudinal beam 213 and the second longitudinal beam 214 are spaced apart along a third direction, and both the first longitudinal beam 213 and the second longitudinal beam 214 extend along the second direction.

[0036] The first direction, the second direction, and the third direction are perpendicular to each other. For example, the first direction can be the height direction of the vehicle (Z direction), the second direction can be the length direction of the vehicle (X direction), and the third direction can be the width direction of the vehicle (Y direction).

[0037] like Figures 1-3 As shown, the first mounting part 11 and the first crossbeam 211 are arranged along a first direction and connected to each other. The second mounting part 12 and the first crossbeam 211 are arranged along a second direction and connected to each other. In other words, the first motor bracket 1 is mounted on the first crossbeam 211.

[0038] Optionally, the first mounting part 11 is welded to the beam 21 (first crossbeam 211), and the second mounting part 12 is welded to the beam 21 (first crossbeam 211). This allows the first motor bracket 1 to be more securely mounted on the beam 21, thereby further improving the modal frequency and dynamic stiffness of the first motor bracket 1, so as to further improve the vibration isolation rate of the first motor bracket 1, giving the first motor bracket 1 better vibration isolation performance and better improving the NVH performance of the vehicle.

[0039] like Figures 1-3 As shown, the first mounting part 11 is connected to the beam 21 (first crossbeam 211) via a first fastener 31, which extends along a first direction. The second mounting part 12 is connected to the beam 21 (first crossbeam 211) via a second fastener 32, which extends along a second direction.

[0040] This allows the first motor bracket 1 to be more securely mounted on the beam 21, thereby further improving the modal frequency and dynamic stiffness of the first motor bracket 1, so as to further improve the vibration isolation rate of the first motor bracket 1, giving the first motor bracket 1 better vibration isolation performance and better improving the NVH performance of the vehicle.

[0041] Furthermore, by using the first fastener 31 and the second fastener 32 to install the first motor bracket 1, not only can the installation difficulty of the first motor bracket 1 be reduced and the installation efficiency of the first motor bracket 1 be improved, but it is also convenient to disassemble the first motor bracket 1 so as to replace the first motor bracket 1.

[0042] For example, the first fastener 31 and the second fastener 32 can be screws, bolts, etc. Accordingly, the first mounting portion 11 is provided with a mounting hole extending in a first direction, and the first fastener 31 passes through the mounting hole of the first mounting portion 11. The second mounting portion 12 is provided with a mounting hole 121 extending in a second direction, and the second fastener 32 passes through the mounting hole 121 of the second mounting portion 12.

[0043] like Figure 2 and Figure 3 As shown, the first motor bracket 1 includes a frame 13, a second mounting part 12, and two first mounting parts 11. The second mounting part 12 is disposed on the frame 13 and extends from the frame 13 along a first direction.

[0044] Each first mounting part 11 is provided on the frame 13, and two first mounting parts 11 extend from the frame 13 in opposite directions along a third direction. That is, the third direction includes opposite first and second sub-directions, one first mounting part 11 extends from the frame 13 in the first sub-direction, and the other first mounting part 11 extends from the frame 13 in the second sub-direction.

[0045] By providing two first mounting parts 11 that extend in opposite directions, the first motor bracket 1 can be more securely mounted on the beam 21. This further increases the modal frequency and dynamic stiffness of the first motor bracket 1, thereby further improving its vibration isolation rate and giving it better vibration isolation performance, thus improving the vehicle's NVH performance.

[0046] like Figure 2 and Figure 3 As shown, the second mounting part 12 is located between the two first mounting parts 11 in the third direction. This allows the first motor bracket 1 to be mounted more securely on the beam 21, thereby further improving the modal frequency and dynamic stiffness of the first motor bracket 1, so as to further improve the vibration isolation rate of the first motor bracket 1, giving the first motor bracket 1 better vibration isolation performance and better improving the NVH performance of the vehicle.

[0047] For example, the first direction is up and down, the second direction is front and back, and the third direction is left and right. The frame 13 is located above the beam 21 (first crossbeam 211), and the second mounting part 12 extends downward from the frame 13, positioned in front of the beam 21 (first crossbeam 211). One first mounting part 11 extends to the left from the frame 13, and another first mounting part 11 extends to the right from the frame 13; both first mounting parts 11 are located above the beam 21 (first crossbeam 211).

[0048] like Figures 1-3 As shown, the first motor bracket 1 also includes a first vibration isolator 14. The first vibration isolator 14 is disposed on the frame 13 and has a motor mounting portion 141 extending in a third direction. The motor is mounted on the first vibration isolator 14 via the motor mounting portion 141 in a third direction. This can further improve the vibration isolation rate and vibration isolation performance of the first motor bracket 1, and better improve the NVH performance of the vehicle.

[0049] This application locally reinforces the beam 21 by mounting the first motor bracket 1 to the beam 21 of the subframe 2 in two mutually perpendicular directions, thereby increasing the local modal frequency of the first motor bracket 1 and the beam 21 (subframe 2). This effectively increases the modal frequency and dynamic stiffness of the first vibration isolator 14 of the first motor bracket 1, thus effectively improving the vibration isolation rate of the first motor bracket 1 and giving it better vibration isolation performance.

[0050] Optionally, the frame 13 has a mounting hole 131 that opens in a third direction. For example, the mounting hole 131 opens to the left or right. Alternatively, the mounting hole 131 extends through the frame 13 in a third direction. The first vibration damper 14 is interference-fitted into the mounting hole 131.

[0051] like Figure 1 and Figure 3 As shown, the first vibration isolator 14 includes an inner core 142. The inner core 142 of the first vibration isolator 14 has a motor mounting hole 143 extending in a third direction, and the motor mounting hole 143 constitutes a motor mounting part 141. The motor is mounted on the inner core 142 (first vibration isolator 14) by fasteners 144 (such as screws, bolts, etc.) that cooperate in the motor mounting hole 143.

[0052] This application, by mounting the first motor bracket 1 to the beam 21 of the subframe 2 in two mutually perpendicular directions, can effectively increase the modal frequency and dynamic stiffness of the inner core 142 of the first vibration isolator 14 of the first motor bracket 1, thereby effectively improving the vibration isolation rate of the first motor bracket 1 and giving the first motor bracket 1 better vibration isolation performance. The first vibration isolator 14 can be an elastic bushing (e.g., a rubber bushing).

[0053] Prior art 1: Two mounting ears and a subframe beam are arranged along a first direction, the two mounting ears are welded to the beam, and the motor bracket is mounted on the two mounting ears. The motor bracket and the beam are arranged along the first direction.

[0054] Prior art 2: The motor bracket and the beam are arranged along a first direction, and the motor bracket is installed on the beam by two bolts extending along the first direction.

[0055] The prior art 1 has a first direction (Z direction) dynamic stiffness valley value of 86693 N / mm, a second direction (X direction) dynamic stiffness valley value of 13870 N / mm, and a third direction (Y direction) dynamic stiffness valley value of 6219 N / mm.

[0056] The first direction (Z direction) dynamic stiffness valley value of the motor bracket in the prior art 2 is 81223 N / mm, the second direction (X direction) dynamic stiffness valley value is 1918 N / mm, and the third direction (Y direction) dynamic stiffness valley value is 21010 N / mm.

[0057] The first motor bracket 1 of this application has a first direction (Z direction) dynamic stiffness valley value of 73516 N / mm, a second direction (X direction) dynamic stiffness valley value of 17090 N / mm, and a third direction (Y direction) dynamic stiffness valley value of 25449 N / mm.

[0058] The third-direction dynamic stiffness valley value of the first motor bracket 1 of this application is significantly higher than that of the motor bracket in prior art 1. The second-direction dynamic stiffness valley value of the first motor bracket 1 of this application is significantly higher than that of the motor bracket in prior art 2. The first motor bracket 1 of this application has large dynamic stiffness valley values ​​in all three directions.

[0059] like Figure 3 and Figure 4As shown, the second mounting portion 12 has a mounting hole 121 extending along a second direction. The first motor bracket 1 also includes an insert 15 located within the mounting hole 121. A portion of the insert 15 extends out of the mounting hole 121, and this portion of the insert 15 abuts against the beam 21. One of the wall surface 122 of the mounting hole 121 and the insert 15 is provided with a protrusion 16, and the other of the wall surface 122 of the mounting hole 121 and the insert 15 is press-fitted with the protrusion 16.

[0060] When installing the first motor bracket 1 onto the beam 21, the first motor bracket 1 is first installed onto the beam 21 along a first direction via the first mounting part 11. This results in an assembly tolerance (installation clearance) between the second mounting part 12 and the beam 21 (first crossbeam 211). For example, there is an assembly tolerance (installation clearance) between the rear surface of the second mounting part 12 and the front surface of the beam 21 (first crossbeam 211). If the second mounting part 12 is directly installed onto the beam 21 using the second fastener 32, it may cause the second mounting part 12 to deform or even break.

[0061] This application provides an insert 15 within the mounting hole 121. The insert 15 is press-fitted with the wall surface 122 of the mounting hole 121 via a protrusion 16, meaning the insert 15 is press-fitted with the second mounting portion 12. When the second mounting portion 12 is installed, a second fastener 32 passes through the insert 15 and the mounting hole 121 and is connected to the beam 21 (first crossbeam 211). The second fastener 32 applies a pushing force (clamping force) to the insert 15, causing the insert 15 to move along a second direction toward the adjacent beam 21 under the action of this pushing force until the insert 15 abuts against the beam 21.

[0062] At this time, the insert 15 is clamped between the second fastener 32 and the beam 21. Since the insert 15 and the second mounting part 12 are interference-fitted, it is equivalent to the second mounting part 12 being clamped between the second fastener 32 and the beam 21, so as to realize the installation of the second mounting part 12 (first motor bracket 1) on the beam 21 along the second direction.

[0063] After the second mounting part 12 is installed, there is still a gap between the second mounting part 12 and the beam 21. Therefore, when installing the second mounting part 12, the second fastener 32 can be prevented from applying large prestress to the second mounting part 12 due to the assembly tolerance between the second mounting part 12 and the beam 21, effectively preventing the second mounting part 12 from failing due to deformation or even breakage.

[0064] Furthermore, the insert 15 and the second mounting portion 12 are interference-fitted by the protrusion 16, thereby effectively reducing the contact area between the insert 15 and the second mounting portion 12, so as to prevent the interference friction of the insert 15 and the second mounting portion 12 from being too large, thereby effectively reducing the installation difficulty of the second mounting portion 12.

[0065] The second fastener 32 can be a bolt, and includes a connected head 321 and a threaded rod. The threaded rod passes through the insert 15 and the mounting hole 121, and is threadedly connected to the beam 21. After the head 321 contacts the insert 15, the head 321 applies a pushing force (clamping force) to the insert 15. When this pushing force is greater than the interference friction between the insert 15 and the second mounting part 12, the insert 15 moves along the second direction toward the adjacent beam 21 under the action of the pushing force until the insert 15 abuts against the beam 21. At this time, the insert 15 is clamped between the head 321 and the beam 21, which is equivalent to the second mounting part 12 being clamped between the head 321 and the beam 21.

[0066] like Figure 4 As shown, there are multiple protrusions 16, which are spaced apart circumferentially along the mounting hole 121. The circumferential spacing angle between two adjacent protrusions 16 in the mounting hole 121 is greater than or equal to a preset angle.

[0067] By providing multiple protrusions 16, a greater interference friction force is achieved between the insert 15 and the second mounting portion 12, thereby more securely mounting the second mounting portion 12 and the first motor bracket 1 onto the beam 21. By ensuring that the circumferential spacing angle between two adjacent protrusions 16 in the mounting hole 121 is greater than or equal to a preset angle, the number of protrusions 16 can be controlled, thus preventing excessive interference friction between the insert 15 and the second mounting portion 12 and effectively reducing the installation difficulty of the second mounting portion 12.

[0068] Optionally, there may be four protrusions 16, with the angle between two adjacent protrusions 16 in the circumferential direction of the mounting hole 121 being 90 degrees.

[0069] like Figure 4 As shown, the other of the mounting hole 121 wall surface 122 and insert 15 is provided with a tooth 151, which is in an interference fit with the protrusion 16.

[0070] By providing a toothed portion 151 that is interference-fitted with the protrusion 16, the frictional force between the protrusion 16 and the toothed portion 151 in the circumferential direction of the mounting hole 121 can be effectively increased, thereby effectively increasing the frictional force between the insert 15 and the second mounting portion 12 (first motor bracket 1) in the circumferential direction of the mounting hole 121. This prevents the motor and the first motor bracket 1 from rotating around the insert 15 (second fastener 32) during motor operation, allowing for more stable motor mounting, reducing vibration transmitted from the motor to the subframe 2, and further improving the vehicle's NVH performance.

[0071] Optionally, the tooth 151 is a triangular tooth or a trapezoidal tooth. Thus, after the tooth 151 and the protrusion 16 are interference-fitted, the tooth 151 can undergo a large deformation, thereby further increasing the friction between the protrusion 16 and the tooth 151 in the circumferential direction of the mounting hole 121, so as to further prevent the motor and the first motor bracket 1 from rotating around the insert 15.

[0072] like Figure 4 As shown, there are multiple teeth 151, which are provided along the entire circumference of the mounting hole 121 on the wall surface 122 of the mounting hole 121 and the insert 15. This can further increase the friction between the protrusion 16 and the teeth 151 in the circumferential direction of the mounting hole 121, thereby further preventing the motor and the first motor bracket 1 from rotating around the insert 15.

[0073] Furthermore, by providing multiple teeth 151 along the entire circumference of the mounting hole 121 on the wall surface 122 of the mounting hole 121 and the other of the insert 15, when the insert 15 is assembled into the mounting hole 121, it is not necessary to align the teeth 151 and the protrusions 16 with each other in the circumference of the mounting hole 121, thereby reducing the installation accuracy requirements of the insert 15 and making the insert 15 easier to install.

[0074] Optionally, each tooth 151 extends along a second direction. This can further increase the frictional force of the protrusion 16 and the tooth 151 in the circumferential direction of the mounting hole 121, thereby further preventing the motor and the first motor bracket 1 from rotating about the insert 15.

[0075] like Figure 4 As shown, the wall surface 122 of the mounting hole 121 is provided with a plurality of protrusions 16, each protrusion 16 extending along a second direction. A plurality of teeth 151 are provided on the outer peripheral surface of the insert 15. The dimension of each tooth 151 in the second direction is approximately equal to the dimension of the insert 15 in the second direction.

[0076] The insert 15 may be cylindrical, and its circumferential direction coincides with that of the mounting hole 121. The insert 15 has a through hole 152 extending along a second direction, through which the second fastener 32 passes. For example, the threaded rod of the second fastener 32 passes through the through hole 152.

[0077] like Figure 1 , Figure 2 and Figure 5 As shown, the subframe assembly 100 also includes a second motor bracket 4 and a third motor bracket 5. The second motor bracket 4 and the third motor bracket 5 are spaced apart along a third direction on the second crossbeam 212. The motor is connected to both the second motor bracket 4 and the third motor bracket 5. This allows the motor to be mounted more securely on the beam 21, thereby giving the subframe 2 better vibration isolation performance and improving the vehicle's NVH performance.

[0078] like Figure 1 , Figure 2 and Figure 5 As shown, the second crossbeam 212 is provided with a first mounting hole 215 and a second mounting hole 216, which are spaced apart along a third direction. Both the first mounting hole 215 and the second mounting hole 216 are open in the second direction. The second motor bracket 4 is interference-fitted with the first mounting hole 215, and the third motor bracket 5 is interference-fitted with the second mounting hole 216.

[0079] By installing the second motor bracket 4 in the first mounting hole 215 which opens in the second direction and the third motor bracket 5 in the second mounting hole 216 which opens in the second direction, the height of the second motor bracket 4 and the third motor bracket 5 can be reduced, thereby reducing the installation height of the motor. This allows the motor to be installed more securely on the beam 21, reducing the vibration transmitted from the motor to the subframe 2, and thus improving the vehicle's NVH performance.

[0080] Optionally, the second motor bracket 4 is a second vibration isolator, and the third motor bracket 5 is a third vibration isolator. This reduces the manufacturing cost of the second motor bracket 4 and the third motor bracket 5, thereby reducing the manufacturing cost of the subframe assembly 100.

[0081] For example, the second motor bracket 4 can be an elastic bushing (e.g., a rubber bushing), and the third motor bracket 5 can be an elastic bushing (e.g., a rubber bushing).

[0082] like Figure 1 , Figure 2 and Figure 5 As shown, the first mounting hole 215 opens in the second direction away from the first crossbeam 211, and the second mounting hole 216 opens in the second direction away from the first crossbeam 211. Alternatively, the first mounting hole 215 extends through the second crossbeam 212 in the second direction, and the second mounting hole 216 extends through the second crossbeam 212 in the second direction.

[0083] Therefore, when installing the second motor bracket 4 and the third motor bracket 5, the first crossbeam 211 is prevented from interfering with the installation of the second motor bracket 4 and the third motor bracket 5, thereby effectively increasing the installation space of the second motor bracket 4 and the third motor bracket 5 and reducing the installation difficulty of the second motor bracket 4 and the third motor bracket 5.

[0084] The first motor bracket 1 is positioned between the second motor bracket 4 and the third motor bracket 5 in the third direction. This allows the motor to be installed more securely on the beam 21.

[0085] This utility model also discloses a vehicle. According to an embodiment of this utility model, the vehicle includes a subframe assembly 100 and a motor. The motor is mounted on a first motor bracket 1 of the subframe assembly 100.

[0086] Accordingly, the vehicle according to the embodiments of the present invention has advantages such as good NVH performance.

[0087] In the description of this utility model, it should be understood that 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., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0089] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0090] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0091] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions 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 any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0092] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A subframe assembly, characterized in that, include: Subframe, the subframe including beams; and A first motor bracket, comprising a first mounting portion and a second mounting portion, wherein the first mounting portion and the beam are arranged along a first direction and connected to the beam, and the second mounting portion and the beam are arranged along a second direction and connected to the beam, wherein the first direction is perpendicular to the second direction.

2. The subframe assembly according to claim 1, characterized in that, The first mounting portion is connected to the beam via a first fastener extending along the first direction; the second mounting portion is connected to the beam via a second fastener extending along the second direction; or The first mounting part is welded to the beam body, and the second mounting part is welded to the beam body.

3. The subframe assembly according to claim 1, characterized in that, The first motor bracket includes: Frame; Two first mounting portions, each disposed on the frame, extend from the frame in opposite directions along a third direction, the third direction being perpendicular to the first direction and the second direction; and The second mounting part is disposed on the frame and extends from the frame along the first direction.

4. The subframe assembly according to claim 1, characterized in that, The first motor bracket includes: The frame, wherein the first mounting part and the second mounting part are disposed on the frame; and A first vibration isolator is disposed on the frame and has a motor mounting portion extending along a third direction, which is perpendicular to the first direction and the second direction.

5. The subframe assembly according to claim 4, characterized in that, The first vibration isolator includes an inner core, the inner core having a motor mounting hole extending along the third direction, the motor mounting hole constituting the motor mounting portion.

6. The subframe assembly according to claim 1, characterized in that, The second mounting portion has a mounting hole that extends through the second direction. The first motor bracket further includes an insert located within the mounting hole. A portion of the insert extends out of the mounting hole and abuts against the beam. One of the wall surface of the mounting hole and the insert has a protrusion, and the other of the wall surface of the mounting hole and the insert is interference-fitted with the protrusion.

7. The subframe assembly according to claim 6, characterized in that, The protrusions are multiple, and the multiple protrusions are spaced apart circumferentially along the mounting hole. The circumferential spacing angle between two adjacent protrusions in the mounting hole is greater than or equal to a preset angle.

8. The subframe assembly according to claim 6, characterized in that, The wall of the mounting hole and the other of the inserts are provided with teeth, which are interference fit with the protrusion.

9. The subframe assembly according to claim 8, characterized in that, The teeth are multiple, and the multiple teeth are provided along the entire circumference of the mounting hole on the wall surface of the mounting hole and on the other of the insert; and / or The teeth are triangular or trapezoidal.

10. The subframe assembly according to claim 1, characterized in that, The beam body includes a first crossbeam and a second crossbeam, the first crossbeam and the second crossbeam are spaced apart along the second direction, the first mounting part and the first crossbeam are arranged along the first direction, the first mounting part and the first crossbeam are connected, the second mounting part and the first crossbeam are arranged along the second direction, and the second mounting part and the first crossbeam are connected.

11. The subframe assembly according to claim 10, characterized in that, The second crossbeam is provided with a first mounting hole and a second mounting hole. The first mounting hole and the second mounting hole are spaced apart along a third direction. Both the first mounting hole and the second mounting hole are open towards the second direction. The third direction is perpendicular to the first direction and the second direction. The subframe assembly further includes a second motor bracket and a third motor bracket. The second motor bracket is interference-fitted with the first mounting hole, and the third motor bracket is interference-fitted with the second mounting hole.

12. The subframe assembly according to claim 11, characterized in that, The first mounting hole opens in the second direction away from the first crossbeam, and the second mounting hole opens in the second direction away from the first crossbeam; or The first mounting hole extends through the second crossbeam along the second direction, and the second mounting hole extends through the second crossbeam along the second direction.

13. A vehicle, characterized in that, include: A subframe assembly, wherein the subframe assembly is a subframe assembly according to any one of claims 1-12; and The motor is mounted on the first motor bracket of the subframe assembly.

14. A motor bracket, characterized in that, include: Frame; A first mounting part is provided on the frame, and the first mounting part is provided in a mounting hole extending along a first direction; and The second mounting part is provided on the frame and is located in a mounting hole extending along a second direction, wherein the first direction is perpendicular to the second direction.

15. The motor bracket according to claim 14, characterized in that, It also includes a first vibration isolation member, which is disposed on the frame. The first vibration isolation member includes an inner core, and the inner core has a motor mounting hole extending along a third direction, which is perpendicular to the first direction and the second direction.

16. The motor bracket according to claim 14, characterized in that, The second mounting portion has a mounting hole extending along the second direction. The motor bracket further includes an insert located within the mounting hole. One of the wall surface of the mounting hole and the insert has a protrusion, and the other of the wall surface of the mounting hole and the insert is interference-fitted with the protrusion.

17. The motor bracket according to claim 16, characterized in that, The protrusions are multiple, and the multiple protrusions are spaced apart circumferentially along the mounting hole. The circumferential spacing angle between two adjacent protrusions in the mounting hole is greater than or equal to a preset angle.

18. The motor bracket according to claim 16, characterized in that, The wall of the mounting hole and the other of the inserts are provided with teeth, which are interference fit with the protrusion.

19. The motor bracket according to claim 18, characterized in that, The teeth are multiple, and the multiple teeth are provided along the entire circumference of the mounting hole on the wall surface of the mounting hole and on the other of the insert; and / or The teeth are triangular or trapezoidal.

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