Power assembly support and vehicle

Abstract

The application discloses a power assembly support and a vehicle, and relates to the technical field of vehicle chassis. The power assembly support comprises a support body; the support body is provided with a half shaft mounting hole for mounting a driving half shaft, a suspension mounting hole for mounting a suspension bushing, a first mounting part, a second mounting part, a third mounting part and a fourth mounting part; the first mounting part, the second mounting part and the third mounting part are used for being connected with a power assembly along a first direction; the fourth mounting part is used for being connected with the power assembly along a second direction; and the first direction is different from the second direction. The power assembly support and the vehicle have the advantages that the modal stiffness of the power assembly support is improved, and the torsion resistance effect of the power assembly support is optimized.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle chassis technology, and more specifically, to a powertrain bracket and a vehicle. Background Technology

[0002] The vehicle's powertrain is connected to the body via a suspension system. The suspension system plays a crucial role in isolating and suppressing vibrations and shocks generated during powertrain operation, ensuring the vehicle's NVH performance and driving comfort. Within the suspension system, the powertrain's torsional rigidity brackets are primarily responsible for resisting the reverse torque generated by the powertrain under acceleration and braking conditions, limiting excessive torsional displacement, and improving the powertrain's dynamic stability.

[0003] In related technologies, powertrain anti-torsion brackets suffer from insufficient modal stiffness and poor anti-torsion performance. Utility Model Content

[0004] This disclosure provides a powertrain bracket and vehicle, which helps to improve the modal stiffness of the powertrain bracket and optimize its torsional resistance.

[0005] According to one aspect of this disclosure, a powertrain bracket is provided, including a bracket body; the bracket body is provided with: Half-shaft mounting holes for mounting the drive half-shaft; Suspension mounting holes for mounting suspension bushings; First mounting section, second mounting section, third mounting section and fourth mounting section; the first mounting section, second mounting section and third mounting section are used to connect to the powertrain along a first direction; the fourth mounting section is used to connect to the powertrain along a second direction; The first direction is different from the second direction.

[0006] In one exemplary embodiment of this disclosure, the suspension mounting hole is parallel to the axis of the half-shaft mounting hole.

[0007] In one exemplary embodiment of this disclosure, the fourth mounting portion has a first mounting surface on the side near the half-shaft mounting hole, the first mounting surface being used to abut against the powertrain along a second direction; the first mounting surface is located between the axis of the suspension mounting hole and the axis of the half-shaft mounting hole along the second direction.

[0008] In one exemplary embodiment of this disclosure, the distance of the first mounting surface from the axis of the suspension mounting hole along the second direction is less than the radius of the suspension mounting hole.

[0009] In one exemplary embodiment of this disclosure, the first mounting portion and the second mounting portion are disposed along the second direction on the side of the half-shaft mounting hole away from the suspension mounting hole; the third mounting portion is disposed along the second direction between the half-shaft mounting hole and the suspension mounting hole.

[0010] In one exemplary embodiment of this disclosure, the axes of the first mounting portion and the second mounting portion are at the same height along the second direction.

[0011] In one exemplary embodiment of this disclosure, the first mounting portion, the second mounting portion, and the third mounting portion are located on the side of the first mounting surface near the half-shaft mounting hole.

[0012] In one exemplary embodiment of this disclosure, the bracket body is provided with a fifth mounting part, a sixth mounting part and a seventh mounting part; the fifth mounting part, the sixth mounting part and the seventh mounting part are used to connect with the half-shaft bracket along a third direction; the third direction is parallel to the axis of the half-shaft mounting hole.

[0013] In one exemplary embodiment of this disclosure, the fifth mounting portion and the sixth mounting portion are disposed along the second direction on the side of the half-shaft mounting hole away from the suspension mounting hole; the seventh mounting portion is disposed along the second direction between the half-shaft mounting hole and the suspension mounting hole.

[0014] According to another aspect of this disclosure, a vehicle is provided, including the powertrain bracket of any of the foregoing.

[0015] In one exemplary embodiment of this disclosure, the powertrain includes an engine assembly; a first mounting portion and a second mounting portion are used to connect to the engine block of the engine assembly along a first direction; a third mounting portion is used to connect to the oil pan of the engine assembly along the first direction; and a fourth mounting portion is used to connect to the oil pan along a second direction.

[0016] In one exemplary embodiment of this disclosure, the suspension bushing is connected to the vehicle frame via an anti-torsion link.

[0017] The powertrain bracket disclosed herein can be connected and constrained to the powertrain in two different directions through a first mounting part, a second mounting part, a third mounting part, and a fourth mounting part, thus forming a stable support. Connecting the powertrain in different directions, compared to multi-point connections in a single direction, can more effectively resist forces and moments from different directions, which is beneficial for improving the overall stiffness and modal performance of the bracket.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0020] Figure 1 This is a schematic diagram of an exemplary embodiment of the powertrain bracket of this disclosure from one perspective.

[0021] Figure 2 This is a schematic diagram of an exemplary embodiment of the powertrain bracket of this disclosure from another perspective.

[0022] Figure 3 This is a schematic diagram of an exemplary embodiment of the powertrain bracket of this disclosure from another perspective.

[0023] Figure 4 This is a schematic diagram illustrating an exemplary embodiment of the powertrain bracket mounting and vehicle of this disclosure.

[0024] Figure 5 This is a schematic diagram of the bracket body and suspension bushing in one exemplary embodiment of the powertrain bracket of this disclosure.

[0025] Explanation of reference numerals in the attached figures: 100. Bracket body; 11. Half-shaft mounting hole; 12. Suspension mounting hole; 21. First mounting part; 22. Second mounting part; 23. Third mounting part; 31. Fourth mounting part; 311. First mounting surface; 41. Drive half-shaft; 42. Half-shaft bracket; 51. Suspension bushing; 52. Torsional link; 61. Fifth mounting part; 62. Sixth mounting part; 63. Seventh mounting part; 7. Frame. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0027] Unless otherwise specified or stated, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “a,” “an,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “comprising” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to those listed; the terms “first” and “second” are used only as illustrative marks and are not intended to limit the number, importance, or order of the objects.

[0028] The terms “connection” and “fixation” should be interpreted broadly. For example, unless otherwise specified, “connection” can be a fixed connection, a movable connection, an integral connection, or a detachable connection. It can be a direct connection or an indirect connection through an intermediate medium.

[0029] Furthermore, in this application, directional terms such as "upper" and "lower" are used only to indicate relative positional relationships. For example, for convenience, they are defined based on the actual position and state during operation, or relative to the indicated placement of components in the accompanying drawings. It should be understood that these directional terms are relative concepts and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0030] According to a first aspect of this disclosure, a powertrain bracket is provided, with reference to... Figures 1 to 3 As shown, the powertrain bracket includes a bracket body 100. The bracket body 100 has a half-shaft mounting hole 11 for mounting a drive half-shaft 41 and a suspension mounting hole 12 for mounting a suspension bushing 51. Furthermore, the bracket body 100 also has a first mounting portion 21, a second mounting portion 22, a third mounting portion 23, and a fourth mounting portion 31. The first mounting portion 21, the second mounting portion 22, and the third mounting portion 23 are all connected to the powertrain along a first direction, while the fourth mounting portion 31 is connected to the powertrain along a second direction different from the first direction.

[0031] The powertrain bracket disclosed herein can be connected and constrained to the powertrain in two different directions through the first mounting part 21, the second mounting part 22, the third mounting part 23, and the fourth mounting part 31, thus forming a stable support. By connecting the powertrain in different directions, compared with multi-point connection in a single direction, it can more effectively resist forces and torques from different directions, which is beneficial to improving the overall stiffness and modal performance of the bracket.

[0032] refer to Figure 1 As shown, for ease of understanding, the vehicle coordinate system can be used as a reference. The first direction and the second direction can be two mutually perpendicular directions within the vehicle coordinate system. Figure 4As shown, the first direction of this disclosure can be parallel to the forward and backward direction of the vehicle (X direction of the vehicle coordinate system), and is represented by X in the figure; the second direction can be parallel to the up and down direction of the vehicle (Z direction of the vehicle coordinate system), and is represented by Z in the figure; the third direction can be parallel to the left and right direction of the vehicle (Y direction of the vehicle coordinate system), and is represented by Y in the figure.

[0033] Specifically, the drive half-shaft 41 extends along the left-right direction (Y direction) of the vehicle. The bracket body 100 is provided with a half-shaft mounting hole 11. Specifically, the drive half-shaft 41 can be fitted into the half-shaft bracket 42, which in turn is fitted into the half-shaft mounting hole 11. The axis of the suspension mounting hole 12 can be parallel to the axis of the half-shaft mounting hole 11, making the force path of the drive half-shaft 41 and the anti-torsion link 52 connected to the powertrain bracket more coordinated, which helps to smoothly transmit and disperse forces and reduces the risk of local stress concentration.

[0034] The first mounting part 21, the second mounting part 22, and the third mounting part 23 are used to connect to the powertrain along the vehicle's front-to-back direction (X-direction); the fourth mounting part 31 is used to connect to the powertrain along the vehicle's vertical direction (Z-direction). Connecting to the powertrain via the first mounting part 21, the second mounting part 22, and the third mounting part 23 in the X-direction and the fourth mounting part 31 in the Z-direction allows for constraint on the bracket body 100 in both the X and Z directions. Compared to multi-point connections along the X-direction alone, this improves the modal characteristics of the bracket, especially the vehicle's front-to-back X-direction modal characteristics. It also enhances the torsional resistance of the bracket body 100, reduces powertrain displacement during vehicle operation, improves fatigue performance, and optimizes NVH (noise, vibration, and harshness) performance.

[0035] Furthermore, those skilled in the art will understand that the above description of directions is merely a relative expression used to facilitate a clear understanding of the technical solutions disclosed herein, and is not an absolute limitation on the final installation orientation and geometry of the powertrain bracket and vehicle. For example, in practical applications, the powertrain bracket may have a certain installation angle deviation due to vehicle layout requirements, and the force direction of each mounting part may not be completely aligned with the vehicle's absolute coordinate system. As long as its structural essence conforms to the connection achieved by the bracket body 100 described in this disclosure through the first mounting part 21, the second mounting part 22 and the third mounting part 23 along the first direction, and the fourth mounting part 31 along the second direction, it should be considered to fall within the scope of this disclosure.

[0036] In one exemplary embodiment of this disclosure, the fourth mounting portion 31 has a first mounting surface 311 on the side near the half-shaft mounting hole 11. The first mounting surface 311 is used to abut and connect with the powertrain along a second direction. For example, the powertrain may include an engine assembly. The first mounting surface 311 is used to abut and connect with the bottom surface of the oil pan of the engine assembly along the Z direction.

[0037] For example, refer to Figure 1 , Figure 2 As shown, the first mounting surface 311 is located along the Z-direction between the axis of the suspension mounting hole 12 and the axis of the half-shaft mounting hole 11, making the support point of the fourth mounting part 31 closer to the geometric center and core force area of ​​the bracket body 100. This allows for Z-direction constraint with a shorter force transmission path, enhancing the bracket body 100's resistance to deformation in the X-direction, effectively improving the X-direction mode of the powertrain bracket. Simultaneously, this exemplary embodiment helps improve the compactness of the powertrain bracket's structural layout, preventing the lowest point of the bracket body 100 from shifting downwards due to the Z-direction mounting point, the fourth mounting part 31, thus ensuring the vehicle's ground clearance.

[0038] In one exemplary embodiment of this disclosure, reference is made to Figure 2 , Figure 3 As shown, the distance between the first mounting surface 311 and the axis of the suspension mounting hole 12 along the second direction is less than the radius of the suspension mounting hole 12. The height of the first mounting surface 311 is within the range of the suspension mounting hole 12, which helps to improve the integration of the fourth mounting part 31 and the suspension mounting hole 12, improve space utilization, and ensure a compact structure while improving rigidity.

[0039] In one exemplary embodiment of this disclosure, reference is made to Figures 1 to 3 As shown, the first mounting portion 21 and the second mounting portion 22 are disposed along the Z-direction on the side of the half-shaft mounting hole 11 away from the suspension mounting hole 12, that is, on the upper part of the bracket body 100. The third mounting portion 23 is disposed along the Z-direction between the half-shaft mounting hole 11 and the suspension mounting hole 12, that is, on the middle part of the bracket body 100. The first mounting portion 21, the second mounting portion 22 and the third mounting portion 23 can be arranged in a triangular pattern, thereby forming a stable support surface in the YZ plane facing the powertrain, and evenly and stably bearing the load from the powertrain.

[0040] In one exemplary embodiment of this disclosure, reference is made to Figures 1 to 3 As shown, the axes of the first mounting part 21 and the second mounting part 22 are at the same height along the Z direction, which can make the load distribution more uniform, avoid the additional bending moment generated when the first mounting part 21 and the second mounting part 22 are connected to the powertrain at the same time, improve the reliability of the connection, and help optimize the stress state of the powertrain bracket.

[0041] In one exemplary embodiment of this disclosure, the first mounting portion 21, the second mounting portion 22, and the third mounting portion 23 are located on the side of the first mounting surface 311 near the half-shaft mounting hole 11. (See reference...) Figures 1 to 3As shown, in this exemplary embodiment, the mounting positions along the X direction (first mounting part 21, second mounting part 22 and third mounting part 23) can all be located on the same side of the mounting position along the Z direction (fourth mounting part 31), thereby improving the rigidity of the connection area between the bracket body 100 and the powertrain, and thus improving the local and overall modes of the bracket body 100.

[0042] In one exemplary embodiment of this disclosure, the bracket body 100 is provided with a fifth mounting portion 61, a sixth mounting portion 62, and a seventh mounting portion 63. (See reference...) Figure 1 , Figure 2 As shown, the fifth mounting part 61, the sixth mounting part 62 and the seventh mounting part 63 are used to connect with the half-shaft bracket 42 along the Y direction.

[0043] The half-shaft bracket 42 is used to support and fix the drive half-shaft 41. Specifically, the drive half-shaft 41, as a rotating shaft for transmitting power, is connected at both ends to wheels and a transmission system such as a gearbox. The half-shaft bracket 42 can support the drive half-shaft 41, preventing it from bending, vibrating, or jumping under gravity and high torque conditions. The half-shaft bracket 42 contains a bearing through which the drive half-shaft 41 passes, thus providing radial support and ensuring smooth rotation of the drive half-shaft 41. Those skilled in the art will understand that the drive half-shaft 41 can be fitted into the half-shaft mounting hole 11 via the half-shaft bracket 42. The phrase "drive half-shaft 41 installed in half-shaft mounting hole 11" in this disclosure can refer to the drive half-shaft 41 being installed in the half-shaft bracket 42 via a bearing, and the half-shaft bracket 42 being installed in the half-shaft mounting hole 11.

[0044] In some exemplary embodiments of this disclosure, the powertrain bracket and the half-shaft bracket 42 are fixed along the Y direction by the fifth mounting part 61, the sixth mounting part 62 and the seventh mounting part 63, so that the support load of the drive half-shaft 41 can be effectively transferred to the frame 7 through the powertrain bracket, which is beneficial to vibration control.

[0045] In one exemplary embodiment of this disclosure, reference is made to Figure 1 , Figure 2 As shown, the fifth mounting part 61 and the sixth mounting part 62 are disposed along the Z direction on the side of the half-shaft mounting hole 11 away from the suspension mounting hole 12; the seventh mounting part 63 is disposed along the second direction between the half-shaft mounting hole 11 and the suspension mounting hole 12. This exemplary embodiment allows the fixed positions in the Y direction and the X direction of the bracket body 100 to be spatially adjacent and to be distributed in a triangular pattern, thereby enhancing the rigidity of the bracket body 100, especially the upper part of the suspension mounting hole 12.

[0046] For example, the fifth mounting part 61 and the seventh mounting part 63 can be threaded holes for connection with the half-shaft bracket 42 via threaded connectors. The sixth mounting part 62 can be a locating pin hole for positioning and connection with the half-shaft bracket 42 via a locating pin.

[0047] This disclosure also provides a vehicle that includes the powertrain bracket described in any of the foregoing embodiments. Exemplarily, the vehicle may be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle, or a vehicle with other powertrain types. The vehicle may be an autonomous vehicle, a semi-autonomous vehicle, or a non-autonomous vehicle.

[0048] In one possible application scenario, the powertrain may include an engine assembly. For example, in gasoline, hybrid, or range-extended vehicles, as the driving torque gradually increases, the powertrain outputs increasingly larger torque during driving, leading to increased vibration transmission and poor vehicle vibration and noise performance. The powertrain bracket disclosed herein can be connected to the engine block of the engine assembly along the X-direction via a first mounting part 21 and a second mounting part 22; connected to the oil pan of the engine assembly along the X-direction via a third mounting part 23; and connected to the oil pan along the Z-direction via a fourth mounting part 31. This fully utilizes the robust structure of the engine to achieve reliable fixation and improves the torsional resistance of the powertrain bracket under engine torque fluctuation conditions.

[0049] For example, refer to Figure 5 As shown, a suspension bushing 51 can be installed in the suspension mounting hole 12, and the suspension bushing 51 is connected to the vehicle frame 7 via an anti-torsion link 52. Specifically, for example, the suspension bushing 51 can be a rubber bushing, which is fitted into the suspension mounting hole 12 by an interference fit. The suspension bushing 51 is connected to the front subframe of the vehicle via the anti-torsion link 52, thereby forming a force transmission path of torque generated by the powertrain (e.g., engine) → powertrain bracket → suspension bushing 51 → anti-torsion link 52 → frame 7, which helps to reduce the impact of powertrain vibration and improve the vehicle's NVH performance and ride comfort.

[0050] For example, in some embodiments, the vehicle may be a hybrid or range-extended vehicle, and the powertrain includes a five-in-one motor assembly. The five-in-one motor assembly can be connected to the front subframe via a second anti-torsion link and a second anti-torsion bracket. The vehicle provided in this disclosure can reduce the force and vibration transmission on the five-in-one motor-side mount by utilizing the second anti-torsion link and the second anti-torsion bracket; by utilizing the aforementioned powertrain bracket to reduce the force and vibration transmission on the engine-side mount, the overall vibration transmission of the powertrain is distributed, which is beneficial to improving the durability of each mount component and the vibration isolation and noise reduction performance of the entire vehicle.

[0051] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A powertrain bracket, characterized in that, Includes a support body (100); the support body (100) is provided with: Half-shaft mounting hole (11) for mounting drive half-shaft (41). Suspension mounting hole (12) for mounting suspension bushing (51); A first mounting part (21), a second mounting part (22), a third mounting part (23), and a fourth mounting part (31); the first mounting part (21), the second mounting part (22), and the third mounting part (23) are used to connect to the powertrain along a first direction; the fourth mounting part (31) is used to connect to the powertrain along a second direction; The first direction is different from the second direction.

2. The powertrain bracket according to claim 1, characterized in that, The suspension mounting hole (12) is parallel to the axis of the half-shaft mounting hole (11).

3. The powertrain bracket according to claim 2, characterized in that, The fourth mounting part (31) has a first mounting surface (311) on the side near the half-shaft mounting hole (11), the first mounting surface (311) is used to be in contact with the powertrain along the second direction; the first mounting surface (311) is located between the axis of the suspension mounting hole (12) and the axis of the half-shaft mounting hole (11) along the second direction.

4. The powertrain bracket according to claim 3, characterized in that, The distance of the first mounting surface (311) from the axis of the suspension mounting hole (12) along the second direction is less than the radius of the suspension mounting hole (12).

5. The powertrain bracket according to claim 2, characterized in that, The first mounting part (21) and the second mounting part (22) are disposed along the second direction on the side of the half shaft mounting hole (11) away from the suspension mounting hole (12); the third mounting part (23) is disposed along the second direction between the half shaft mounting hole (11) and the suspension mounting hole (12).

6. The powertrain bracket according to claim 5, characterized in that, The first mounting part (21) and the second mounting part (22) are at the same height along the second direction.

7. The powertrain bracket according to claim 3, characterized in that, The first mounting part (21), the second mounting part (22) and the third mounting part (23) are located on the side of the first mounting surface (311) near the half shaft mounting hole (11).

8. The powertrain bracket according to claim 1, characterized in that, The bracket body (100) is provided with a fifth mounting part (61), a sixth mounting part (62) and a seventh mounting part (63); the fifth mounting part (61), the sixth mounting part (62) and the seventh mounting part (63) are used to connect with the half-shaft bracket (42) along a third direction; the third direction is parallel to the axis of the half-shaft mounting hole (11).

9. The powertrain bracket according to claim 8, characterized in that, The fifth mounting part (61) and the sixth mounting part (62) are disposed along the second direction on the side of the half shaft mounting hole (11) away from the suspension mounting hole (12); the seventh mounting part (63) is disposed along the second direction between the half shaft mounting hole (11) and the suspension mounting hole (12).

10. A vehicle, characterized in that, The powertrain bracket includes any one of claims 1 to 9.

11. The vehicle according to claim 10, characterized in that, The powertrain includes an engine assembly; the first mounting portion (21) and the second mounting portion (22) are connected to the engine block of the engine assembly along the first direction; the third mounting portion (23) is connected to the oil pan of the engine assembly along the first direction; and the fourth mounting portion (31) is connected to the oil pan along the second direction.

12. The vehicle according to claim 10, characterized in that, The suspension bushing (51) is installed in the suspension mounting hole (12), and the suspension bushing (51) is connected to the vehicle frame (7) via the anti-torsion link (52).

Images