Subframe assembly, active suspension system, and vehicle

Abstract

The embodiment of the application provides a subframe assembly, an active suspension system and a vehicle, comprising a subframe and a pump unit; the subframe is provided with a notch, and the pump unit is installed in the notch; the pump unit is used for providing fluid pressure to an active damper. The notch is arranged on the subframe to accommodate the pump unit, which is equivalent to additionally arranging an accommodation space on the basis of the existing subframe to install the pump unit. Compared with the arrangement mode of directly arranging the pump unit on the subframe or the vehicle body in the prior art, the arrangement of the embodiment can reduce the occupation of the pump unit to other spaces of the vehicle.

Description

Technical Field

[0001] This application relates to the field of active suspension technology, and more particularly to a subframe assembly, an active suspension system, and a vehicle. Background Technology

[0002] Electro-hydraulic active suspension, as a type of active suspension, has core components such as a pump unit (e.g., an electric hydraulic pump) and an active shock absorber.

[0003] In the existing technology, the pump unit is arranged on the subframe or body, which occupies a large space. Utility Model Content

[0004] This application provides a subframe assembly, an active suspension system, and a vehicle, aiming to solve the problem in the prior art where the pump unit is arranged in the subframe or body, occupying a large space.

[0005] To address the aforementioned issues, one embodiment of this application provides a subframe assembly, including a subframe and a pump unit; the subframe has a notch, and the pump unit is installed within the notch; the pump unit is used to provide fluid pressure to the active damper.

[0006] By creating a notch in the subframe to accommodate the pump unit, it is equivalent to adding additional space on the existing subframe for installing the pump unit. Compared to the existing method of placing the pump unit directly on the subframe or vehicle body, this embodiment can reduce the space occupied by the pump unit in other parts of the vehicle.

[0007] In one embodiment, the subframe includes a left longitudinal beam, a right longitudinal beam, a front crossbeam, and a rear crossbeam. The left longitudinal beam and the right longitudinal beam are spaced apart and opposite each other in the left-right direction of the vehicle. The front crossbeam is connected between the front end of the left longitudinal beam and the front end of the right longitudinal beam. The rear crossbeam is connected between the rear end of the left longitudinal beam and the rear end of the right longitudinal beam. At least one of the left longitudinal beam, the right longitudinal beam, the front crossbeam, and the rear crossbeam is provided with the notch.

[0008] This makes it easier to set the notch and also facilitates the installation of the pump unit.

[0009] In one embodiment, at least one of the front crossbeam and the rear crossbeam is a mounting crossbeam, the mounting crossbeam having the notch, the mounting crossbeam being divided into a left section and a right section by the notch, and the pump unit being connected between the left section and the right section of the mounting beam.

[0010] This design facilitates both the placement of the notch and the installation of the pump unit within it. Furthermore, connecting the left and right sections of the mounting beam via the pump unit helps ensure the strength of the mounting beam and subframe. Additionally, since active dampers are typically located on the left and right sides of the subframe, mounting the pump unit on the mounting beam allows for better coordination between the pump unit and the active dampers on both sides of the subframe.

[0011] In one embodiment, a mounting bracket is also included, and at least one of the left and right sections of the mounting beam is connected to the pump unit via the mounting bracket.

[0012] This allows the mounting bracket structure to be designed according to installation requirements, facilitating the installation of the pump unit on the subframe. Compared to directly modifying the subframe and pump unit, the setup in this embodiment reduces the difficulty of modification and simplifies production.

[0013] In one embodiment, the pump unit is provided with a first interface and a second interface. The first interface is adapted to be connected to the active vibration damper through a first pipeline, and the second interface is adapted to be connected to the active vibration damper through a second pipeline. The mounting bracket is provided with a clearance window on the side near the pump unit, and the clearance window is used to avoid the first pipeline and the second pipeline.

[0014] This setup makes it easy to connect the first and second pipelines to the pump unit, and also facilitates later use and maintenance.

[0015] In one embodiment, the mounting bracket includes a first connecting plate and a second connecting plate; the first connecting plate is connected to the top surface of the mounting beam, and the end of the first connecting plate near the notch is connected to the top end of the second connecting plate; or, the first connecting plate is connected to the bottom surface of the mounting beam, and the end of the first connecting plate near the notch is connected to the bottom end of the second connecting plate; the second connecting plate extends into the notch and is connected to the pump unit.

[0016] Connecting the mounting beam and pump unit to different sides of the mounting bracket facilitates their connection. Furthermore, the first connecting plate is located on the top surface of the mounting beam, allowing the beam to support both the mounting bracket and the pump unit, thus improving the stability of the pump unit on the mounting beam. Simultaneously, the first connecting plate's location on the top or bottom surface of the mounting beam reduces the horizontal space occupied by the mounting bracket on the subframe and effectively prevents interference with other components on the subframe. Additionally, extending the second connecting plate into the notch allows for partial accommodating of the mounting bracket, further reducing its space occupation on the subframe.

[0017] In one embodiment, two mounting brackets are provided, one of which connects the left section of the mounting beam and the pump unit, and the other of which connects the right section of the mounting beam and the pump unit. This facilitates the installation of the pump unit on the subframe and makes the pump unit more securely mounted on the subframe.

[0018] In one embodiment, a vibration damper is also included; the mounting bracket is connected to the pump unit via the vibration damper.

[0019] This reduces the transmission of vibration between the mounting bracket and the pump unit, improving the overall NVH performance of the vehicle.

[0020] In one embodiment, one of the left longitudinal beam, right longitudinal beam, front crossbeam, and rear crossbeam is provided with the notch, and the pump unit includes a first pump and a second pump connected together; the first pump is used to provide fluid pressure to one of the active dampers, and the second pump is used to provide fluid pressure to the other active damper.

[0021] This reduces modifications to the subframe and ensures its strength and other performance characteristics. Furthermore, connecting the two pumps together facilitates the assembly of the pump unit with the subframe.

[0022] In one embodiment, both the front crossbeam and the rear crossbeam are provided with the notch; the pump unit includes a first pump and a second pump; the first pump is arranged in the notch on the front crossbeam for providing fluid pressure to one of the active dampers; the second pump is arranged in the notch on the rear crossbeam for providing fluid pressure to the other active damper.

[0023] In this way, when the first pump is installed on the front crossbeam, there is no need to consider the assembly relationship between the first and second pumps, nor is there any need to consider whether the installation of the first pump will be interfered with by the second pump; similarly, when the second pump is installed on the rear crossbeam, there is no need to consider the assembly relationship between the second and first pumps, nor is there any need to consider whether the installation of the second pump will be interfered with by the first pump, thereby reducing the matching requirements of the two pumps and facilitating production.

[0024] To address the aforementioned issues, this application provides an active suspension system, including an active shock absorber and a subframe assembly as described in any of the above embodiments.

[0025] The active suspension system has a notch on the subframe to accommodate the pump unit. This is equivalent to adding extra space on the existing subframe to accommodate the pump unit. Compared to the existing technology where the pump unit is directly placed on the subframe or vehicle body, this embodiment reduces the space occupied by the pump unit in other parts of the vehicle, making it easier to install and use the active suspension system.

[0026] To address the aforementioned issues, this application provides a vehicle that includes the subframe assembly described in any of the above descriptions or the active suspension system described above.

[0027] The vehicle in this embodiment uses the aforementioned subframe assembly, which reduces the space occupied by the pump unit in other parts of the vehicle and reduces the need for modifications to related body parts, thereby lowering the vehicle's development costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an active suspension system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the front crossbeam at the notch according to an embodiment of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the front crossbeam at the notch according to an embodiment of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the connection between the front crossbeam and the pump unit according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the mounting bracket provided in one embodiment of the present invention; Figure 6 This is a schematic diagram of the pump unit provided in one embodiment of the present invention.

[0029] The reference numerals in the accompanying drawings are as follows: 100. Active suspension system; 10. Subframe assembly; 101. Subframe; 102. Notch; 20. Active shock absorber; 1. Pump unit; 11. Third through hole; 12. First interface; 13. Second interface; 14. Groove structure; 15. First pump; 151. First body; 152. First mounting part; 16. Second pump; 161. Second body; 162. Second mounting part; 17. Connecting seat; 2. Left longitudinal beam; 3. Right longitudinal beam; 4. Front crossbeam; 41. Left section of mounting beam; 42. Right section of mounting beam; 43. First through hole 5. Rear crossbeam; 6. Mounting bracket; 61. First connecting plate; 62. Second connecting plate; 63. Second through hole; 64. Fourth through hole; 65. Clearance window; 7. Vibration damping components. Detailed Implementation

[0030] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] like Figure 1 As shown, the subframe assembly 10 provided in this application embodiment includes a subframe 101 and a pump unit 1; the subframe 101 is provided with a notch 102, and the pump unit 1 is installed in the notch 102; the pump unit 1 is used to provide fluid pressure to the active damper 20.

[0032] In existing technologies, there are generally two arrangements for the pump unit: one is to place the pump unit in the original position of the passive suspension's stabilizer bar, and the other is to fix it to the vehicle body. Since the pump unit is much larger than the part of the stabilizer bar that is fixed to the subframe, directly fixing the pump unit to the original position of the stabilizer bar often results in interference with surrounding components such as the lower body or battery.

[0033] To solve this problem, either the vehicle body needs to be modified, or the battery size needs to be reduced, sacrificing battery capacity to meet the pump unit's placement requirements; both modifications would be costly. Fixing the pump unit to the vehicle body also involves modifying many surrounding components, which would also be very expensive.

[0034] In this embodiment, a notch 102 is provided on the subframe 101 to accommodate the pump unit 1, which is equivalent to providing additional space on the existing subframe 101 to accommodate the pump unit 1. Compared with the prior art where the pump unit is directly placed on the subframe or vehicle body, the arrangement in this embodiment can reduce the space occupied by the pump unit 1 in other parts of the vehicle.

[0035] Moreover, compared with the existing technology of directly arranging the pump unit on the subframe or vehicle body, the arrangement of this embodiment can avoid (or reduce) the modification of the lower body, battery volume and related parts on the vehicle body, thereby reducing the improvement and production costs of the vehicle and ensuring the battery capacity.

[0036] Additionally, "pump unit 1 is used to provide fluid pressure to active damper 20" can mean that pump unit 1 can input fluid into active damper 20 in order to control the extension and retraction of active damper 20.

[0037] The fluid can be a liquid, in which case pump unit 1 can be an electro-hydraulic pump. Of course, the fluid can also be a gas.

[0038] Example 1 like Figure 1As shown, the subframe 101 includes a left longitudinal beam 2, a right longitudinal beam 3, a front crossbeam 4, and a rear crossbeam 5. The left longitudinal beam 2 and the right longitudinal beam 3 are spaced apart and opposite each other in the left-right direction of the vehicle. The front crossbeam 4 is connected between the front end of the left longitudinal beam 2 and the front end of the right longitudinal beam 3. The rear crossbeam 5 is connected between the rear end of the left longitudinal beam 2 and the rear end of the right longitudinal beam 3.

[0039] Among them, the front crossbeam 4 has a notch 102.

[0040] This makes it easier to set up the notch 102 and also facilitates the installation of pump unit 1.

[0041] In addition, the front crossbeam 4 is usually provided with a notch 102.

[0042] exist Figure 1 In the directions shown, the vehicle's front-to-back direction is parallel to the X-axis, the vehicle's left-to-right direction is parallel to the Y-axis, and the vehicle's up-to-down direction is parallel to the Z-axis. In this embodiment, the "front," "rear," "left," "right," "up," and "down" orientations of the subframe 101 refer to the directions applied to the rear of the vehicle.

[0043] like Figure 1 As shown, the front crossbeam 4 is defined as the mounting crossbeam. The mounting crossbeam has a notch 102, which divides the mounting crossbeam into a left section 41 and a right section 42. The pump unit 1 is connected between the left section 41 and the right section 42 of the mounting beam.

[0044] The left segment 41 and the right segment 42 of the mounting beam are spaced apart in the left-right direction of the vehicle, and the space between them is the notch 102. That is, the notch 102 is formed by cutting off a part in the middle of the mounting beam, so that the mounting beam is broken into two segments at the notch 102.

[0045] This design facilitates both the placement of the notch 102 and the installation of the pump unit 1 within it. Furthermore, connecting the left section 41 and the right section 42 of the mounting beam via the pump unit 1 helps ensure the strength of the mounting beam and subframe 101.

[0046] Furthermore, the active dampers 20 are usually arranged on the left and right sides of the subframe 101. Setting the pump unit 1 on the mounting beam also facilitates the cooperation between the pump unit 1 and the active dampers 20 on the left and right sides of the subframe 101.

[0047] like Figure 1 As shown, the gap 102 is between the left longitudinal beam 2 and the right longitudinal beam 3, which helps to center the center of gravity of the subframe 101.

[0048] like Figure 1As shown, in the direction from the right longitudinal beam 3 to the left longitudinal beam 2, a crossbeam is installed that protrudes from the surface of the left longitudinal beam 2 away from the surface of the right longitudinal beam 3; and, in the direction from the left longitudinal beam 2 to the right longitudinal beam 3, a crossbeam is installed that protrudes from the surface of the right longitudinal beam 3 away from the surface of the left longitudinal beam 2.

[0049] In addition, the mounting beam is usually a hollow structure, so the left section 41 of the mounting beam has an opening on the side near the pump unit 1, and the right section 42 of the mounting beam has an opening on the side near the pump unit 1.

[0050] In actual products, the openings of the left section 41 and the right section 42 of the mounting beam may not be closed, for example, as shown in the reference. Figure 2 Of course, the openings in both the left section 41 and the right section 42 of the installation beam can also be closed by corresponding plates, such as those shown in the reference. Figure 3 .

[0051] like Figure 4 As shown, the subframe assembly 10 also includes a mounting bracket 6, and at least one of the left section 41 and the right section 42 of the mounting beam is connected to the pump unit 1 via the mounting bracket 6.

[0052] This allows the structure of the mounting bracket 6 to be designed according to installation requirements, thus facilitating the installation of the pump unit 1 on the subframe 101. Compared to directly modifying the subframe 101 and the pump unit 1, the setup in this embodiment reduces the difficulty of modification and facilitates production.

[0053] Normally, the left section 41 and the right section 42 of the mounting beam are connected to the pump unit 1 via the mounting bracket 6, which makes it easier to install the pump unit 1 on the subframe 101.

[0054] like Figure 4 and Figure 5 As shown, the mounting bracket 6 includes a first connecting plate 61 and a second connecting plate 62. The first connecting plate 61 is connected to the top surface of the mounting beam, and one end of the first connecting plate 61 near the notch 102 is connected to the top end of the second connecting plate 62; alternatively, the first connecting plate 61 is connected to the bottom surface of the mounting beam, and one end of the first connecting plate 61 near the notch is connected to the bottom end of the second connecting plate 62. Furthermore, the second connecting plate 62 extends into the notch 102 and is connected to the pump unit 1.

[0055] The mounting beam and pump unit 1 are connected to different sides of the mounting bracket 6, which facilitates the connection between the mounting bracket 6 and the mounting beam. Furthermore, the first connecting plate 61 is located on the top surface of the mounting beam, thus supporting both the mounting bracket 6 and the pump unit 1, thereby improving the stability of the pump unit 1 on the mounting beam.

[0056] Meanwhile, the first connecting plate 61 is located on the top or bottom surface of the mounting beam, which helps to reduce the space occupied by the mounting bracket 6 in the horizontal direction of the subframe and can effectively prevent it from interfering with related components on the subframe 101.

[0057] In addition, by extending the second connecting plate 62 into the notch 102, a portion of the mounting bracket 6 can be accommodated in the notch 102, thereby reducing the space occupied by the mounting bracket 6 on the subframe 101.

[0058] The first connecting plate 61 and the second connecting plate 62 are connected to form an L-shaped bending structure. After assembly, the first connecting plate 61 is located outside the notch 102. Moreover, when the first connecting plate 61 is connected to the top surface of the mounting beam, the first connecting plate 61 is located above the second connecting plate 62; when the first connecting plate 61 is connected to the bottom surface of the mounting beam, the first connecting plate 61 is located below the second connecting plate 62.

[0059] When the left section 41 of the mounting beam is connected to the pump unit 1 via the mounting bracket 6, the first connecting plate 61 is connected to the top or bottom surface of the left section 41 of the mounting beam. At this time, the second connecting plate 62 can be connected to the surface of the pump unit 1 that is away from the right section 42 of the mounting beam.

[0060] When the right section 42 of the mounting beam is connected to the pump unit 1 via the mounting bracket 6, the first connecting plate 61 is connected to the top and bottom surfaces of the right section 42 of the mounting beam. At this time, the second connecting plate 62 can be connected to the surface of the pump unit 1 that is away from the left section 41 of the mounting beam.

[0061] The top surface of the mounting beam includes the top surface of the left section 41 and the top surface of the right section 42 of the mounting beam, and the bottom surface of the mounting beam includes the bottom surface of the left section 41 and the bottom surface of the right section 42 of the mounting beam.

[0062] The mounting bracket 6 is detachably connected to the mounting beam and to the pump unit 1, which facilitates maintenance and operation.

[0063] like Figure 2 and Figure 5 As shown, the mounting beam has a first through hole 43, and the first connecting plate 61 has a second through hole 63. A bolt passes through the mounting beam through the first through hole 43 and through the first connecting plate 61 through the second through hole 63, and engages with the corresponding nut threadedly, so that the first connecting plate 61 and the mounting beam can be locked together, thereby realizing the detachable connection between the mounting bracket 6 and the mounting beam.

[0064] like Figure 5 and Figure 6As shown, the pump unit 1 is provided with a third through hole 11, and the second connecting plate 62 is provided with a fourth through hole 64. A bolt passes through the pump unit 1 through the third through hole 11 and through the second connecting plate 62 through the fourth through hole 64, and engages with the corresponding nut threadedly, so that the second connecting plate 62 and the pump unit 1 can be locked together, thereby realizing the detachable connection between the mounting bracket 6 and the pump unit 1.

[0065] There are two mounting brackets 6. One mounting bracket 6 connects the left section 41 of the mounting beam and the pump unit 1, and the other mounting bracket 6 connects the right section 42 of the mounting beam and the pump unit 1. This makes it easier to install the pump unit 1 on the subframe 101 and also makes the pump unit 1 more securely installed on the subframe 101.

[0066] In one scenario, two mounting brackets 6 are arranged at intervals on both sides of the pump unit 1 along the left-right direction of the vehicle; the first connecting plate 61 of the left mounting bracket 6 is connected to the left section 41 of the mounting beam, and the second connecting plate 62 of the left mounting bracket 6 is connected to the left end of the pump unit 1; the first connecting plate 61 of the right mounting bracket 6 is connected to the right section 42 of the mounting beam, and the second connecting plate 62 of the right mounting bracket 6 is connected to the right end of the pump unit 1.

[0067] like Figure 6 As shown, the subframe assembly 10 also includes a vibration damper 7; the mounting bracket 6 is connected to the pump unit 1 via the vibration damper 7. This reduces the transmission of vibration between the mounting bracket 6 and the pump unit 1, improving the overall NVH performance of the vehicle.

[0068] Among them, the vibration damping component 7 can be a rubber bushing or a suspension or other object that can reduce vibration transmission.

[0069] For example, when the damping component 7 is a rubber bushing, it can be installed in the third through hole 11, and the bolts used to connect the second connecting plate 62 and the pump unit 1 can be inserted inside the rubber bushing.

[0070] like Figure 5 and Figure 6 As shown, the pump unit 1 is provided with a first interface 12 and a second interface 13. The first interface 12 is adapted to be connected to the active vibration damper 20 through a first pipeline, and the second interface 13 is adapted to be connected to the active vibration damper 20 through a second pipeline. The mounting bracket 6 is provided with a clearance window 65 on the side near the pump unit 1. The clearance window 65 is used to avoid the first pipeline and the second pipeline.

[0071] This setup allows for easy connection of the first and second pipelines to pump unit 1, facilitating installation and maintenance.

[0072] During operation, the fluid in the pump unit 1 can enter the first pipeline from the second interface 13 and then enter the active damper 20 from the first pipeline. The fluid in the active damper 20 can enter the second pipeline and flow from the second pipeline to the first interface 12, and finally flow into the pump unit 1.

[0073] Of course, the fluid in the pump unit 1 can enter the second pipeline from the first interface 12 and then enter the active damper 20 from the second pipeline. The fluid in the active damper 20 can enter the first pipeline and flow from the first pipeline to the second interface 13, and finally flow into the pump unit 1.

[0074] In one scenario, when fluid flows out from the second port 13 to the active damper 20, the piston rod of the active damper 20 can be extended; when fluid flows out from the first port 12 to the active damper 20, the piston rod of the active damper 20 can be retracted.

[0075] In addition, the first interface 12 and the second interface 13 may be located on the side of the pump unit 1 near the mounting bracket 6.

[0076] like Figure 5 As shown, the avoidance window 65 is provided on the second connecting plate 62. Furthermore, the avoidance window 65 can penetrate the second connecting plate 62 in the left-right direction of the vehicle, and in the vertical direction, the avoidance window 65 can extend through the surface of the second connecting plate 62 away from the surface of the first connecting plate 61. This improves its avoidance effect on pipelines.

[0077] Furthermore, in the left-right direction, the avoidance window 65 is positioned relative to the first interface 12 and the second interface 13 to avoid obstructing the first interface 12 and the second interface 13. Specifically, in an orthographic projection onto a plane perpendicular to the left-right direction, the projections of the first interface 12 and the second interface 13 lie within the projection of the avoidance window 65.

[0078] like Figure 6 As shown, the pump unit 1 has a groove structure 14 on its surface near the mounting bracket 6; the first interface 12 and the second interface 13 are located on the bottom surface of the groove structure 14, and the groove structure 14 can also be used to avoid the first and second pipelines. The groove structure 14 can extend downward or upward through the pump unit 1 to better avoid the first and second pipelines.

[0079] like Figure 6 As shown, pump unit 1 includes a first pump 15 and a second pump 16; the first pump 15 is used to provide fluid pressure to one of the active dampers 20, and the second pump 16 is used to provide fluid pressure to the other active damper 20. This facilitates the control of the extension and retraction of the two active dampers 20.

[0080] When one of the left longitudinal beam 2, right longitudinal beam 3, front crossbeam 4, and rear crossbeam 5 has a notch 102, the first pump 15 and the second pump 16 are both located within the notch 102 and are connected to each other. This reduces modifications to the subframe 101 and ensures the strength and other performance characteristics of the subframe 101. Furthermore, connecting the two pumps together facilitates the assembly of the pump unit 1 with the subframe 101.

[0081] exist Figure 1 In the example shown, only the front crossbeam 4 has a notch 102, and both the first pump 15 and the second pump 16 are connected to the front crossbeam 4.

[0082] like Figure 6 As shown, pump unit 1 also includes a connecting seat 17, on which both the first pump 15 and the second pump 16 are mounted, thereby achieving the connection between the two pumps. That is, in this embodiment, the first pump 15 and the second pump 16 are connected by means of external components.

[0083] like Figure 6 As shown, the first pump 15 and the second pump 16 are arranged sequentially along the left and right directions.

[0084] In addition, the first pump 15 is connected to the left section 41 of the mounting beam via a mounting bracket 6, and the second pump 16 is connected to the right section 42 of the mounting beam via a mounting bracket 6.

[0085] Furthermore, both the first pump 15 and the second pump 16 have a second interface 13 and a first interface 12.

[0086] like Figure 6 As shown, the first pump 15 includes a first body 151 and a first mounting portion 152. The first mounting portion 152 is connected to the side of the first body 151 opposite to the second pump 16, and is used to connect to the mounting bracket 6. The first body 151 may be a cylindrical structure, and its axis may be parallel to the left-right direction. In addition, both ends of the first mounting portion 152 protrude from the first body 151 in the front-back direction.

[0087] The first mounting portion 152 is provided with a third through hole 11, which penetrates the first mounting portion 152 in the left-right direction. Moreover, the third through hole 11 is located in the part of the first mounting portion 152 that protrudes from the first body 151, thus enabling the third through hole 11 to penetrate the pump unit 1.

[0088] In addition, the first mounting part 152 is provided with two third through holes, which are spaced apart on both sides of the first body 151 in the front-back direction. At this time, the mounting bracket 6 that cooperates with the first pump 15 can also be provided with two fourth through holes, one third through hole and one fourth through hole cooperating.

[0089] like Figure 6As shown, the first mounting portion 152 is provided with a first interface 12 and a second interface 13, which are interfaces for the first pump 15. Simultaneously, the first mounting portion 152 is also provided with the aforementioned groove structure 14, and the first interface and the second interface on the first mounting portion 152 are located on the bottom surface of the groove structure 14.

[0090] It should be noted that both the first body 151 and the first mounting part 152 can be part of the housing structure of the first pump 15.

[0091] When the clearance window 65 on the second connecting plate connected to the first mounting portion 152 extends through the upper end of the second connecting plate 62, the groove structure 14 on the first mounting portion 152 extends upward through the first mounting portion 152. When the clearance window 65 on the second connecting plate 62 connected to the first mounting portion 152 extends through the lower end of the second connecting plate 62, the groove structure 14 on the first mounting portion 152 extends downward through the first mounting portion 152.

[0092] like Figure 6 As shown, the second pump 16 includes a second body 161 and a second mounting portion 162. The second mounting portion 162 is connected to the side of the second body 161 opposite to the first pump 15, and is used to connect to the mounting bracket 6. The second body 161 can be a cylindrical structure, and its axis can be parallel to the left-right direction. In addition, both ends of the second mounting portion 162 protrude from the second body 161 in the front-back direction.

[0093] The second mounting portion 162 is provided with a third through hole 11, which penetrates the second mounting portion 162 in a left-right direction. Furthermore, the third through hole 11 is located in the area of ​​the second mounting portion 162 that protrudes from the second body 161, thus allowing the third through hole 11 to penetrate the pump unit 1. In addition, the second mounting part 162 is provided with two third through holes 11, which are spaced apart on both sides of the second body 161 in the front-back direction. At this time, the mounting bracket 6 that cooperates with the second pump 16 can also be provided with two fourth through holes 64, with one third through hole 11 and one fourth through hole 64 cooperating.

[0094] The second mounting part 162 is provided with a first interface 12 and a second interface 13, which are interfaces for the second pump 16. At the same time, the second mounting part 162 is also provided with the aforementioned groove structure 14, and the first interface and the second interface on the second mounting part 162 are located on the bottom surface of the groove structure 14.

[0095] It should be noted that both the second body 161 and the second mounting part 162 can be part of the housing structure of the second pump 16.

[0096] When the clearance window 65 on the second connecting plate 62 connected to the second mounting portion 162 extends through the upper end of the second connecting plate 62, the groove structure 14 on the second mounting portion 162 extends upward through the second mounting portion 162. When the clearance window 65 on the second connecting plate 62 connected to the second mounting portion 162 extends through the lower end of the second connecting plate 62, the groove structure 14 on the second mounting portion 162 extends downward through the second mounting portion 162.

[0097] Example 2 Unlike Embodiment 1, in Embodiment 2, the rear crossbeam 5 can also be a mounting crossbeam, or both the front crossbeam 4 and the rear crossbeam 5 can be mounting crossbeams. In this case, providing a notch 102 on the mounting crossbeam can also achieve the effect described above.

[0098] In addition, regardless of whether the rear crossbeam 5 or the front crossbeam 4 is the mounting crossbeam, the mounting crossbeam can be broken into two sections at the notch 102; or, regardless of whether the rear crossbeam 5 or the front crossbeam 4 is the mounting crossbeam, the mounting crossbeam can remain unbroken at the notch 102. In this case, the notch 102 is simply a recessed structure on the mounting crossbeam.

[0099] Of course, when the notch 102 is placed on other beams, the beam can be broken into two sections at the notch 102, or the beam can remain unbroken at the notch 102.

[0100] In Embodiment 2, when the rear crossbeam 5 is the mounting crossbeam, the notch 102 can also be located between the left longitudinal beam 2 and the right longitudinal beam 3. Of course, in some other scenarios, regardless of whether the rear crossbeam 5 or the front crossbeam 4 is the mounting crossbeam, the notch 102 can also be located on the side of the left longitudinal beam 2 away from the right longitudinal beam 3; or, the notch 102 can also be located on the side of the right longitudinal beam 3 away from the left longitudinal beam 2.

[0101] Example 3 Unlike Embodiment 1, in Embodiment 3, in order to improve the NVH performance of the whole vehicle, the mounting bracket 6 and the mounting crossbeam can also be connected by a damping component 7.

[0102] Example 4 Unlike Embodiment 1, in Embodiment 4, the crossbeam installed in the direction from the right longitudinal beam 3 to the left longitudinal beam 2 may not protrude from the surface of the left longitudinal beam 2 away from the right longitudinal beam 3. Furthermore, in the direction from the left longitudinal beam 2 to the right longitudinal beam 3, the crossbeam installed may also not protrude from the surface of the right longitudinal beam 3 away from the left longitudinal beam 2.

[0103] Example 5 Unlike Embodiment 1, in Embodiment 5, when the pump unit 1 includes a first pump 15 and a second pump 16, the first pump 15 and the second pump 16 can be connected without the aid of external parts. For example, their housings can be connected by welding or other means to achieve the connection between the two pumps.

[0104] In addition, when the pump unit 1 includes a first pump 15 and a second pump 16, the first pump 15 and the second pump 16 can also be arranged sequentially in the front-back direction.

[0105] Example 6 Unlike Embodiment 1, in Embodiment 5, when pump unit 1 includes a first pump 15 and a second pump 16, both the front crossbeam 4 and the rear crossbeam 5 are provided with notches 102. The first pump 15 is arranged in the notch 102 on the front crossbeam 4, and the second pump 16 is arranged in the notch 102 on the rear crossbeam 5. This eliminates the need to assemble the first pump 15 and the second pump 16 together, simplifying the setup of pump unit 1. When installing the first pump 15 on the front crossbeam 4, there is no need to consider the assembly relationship between the first pump 15 and the second pump 16, nor whether the installation of the first pump 15 will be interfered with by the second pump 16. Similarly, when installing the second pump 16 on the rear crossbeam 5, there is no need to consider the assembly relationship between the second pump 16 and the first pump 15, nor whether the installation of the second pump 16 will be interfered with by the first pump 15. This reduces the requirements for the fit between the two pumps and facilitates production.

[0106] In this embodiment, both the front crossbeam 4 and the rear crossbeam 5 are mounting crossbeams, and both have a notch.

[0107] After assembly, the two opposite ends of the first pump are connected to the opposite side walls of the notch in the front crossbeam 4, for example, the left end of the first pump is connected to the left end of the mounting beam, and the right end of the first pump is connected to the right end of the mounting beam. The two opposite ends of the second pump are connected to the opposite side walls of the notch in the rear crossbeam 5, for example, the left end of the second pump is connected to the left end of the mounting beam, and the right end of the second pump is connected to the right end of the mounting beam.

[0108] Example 7 Unlike the configuration in Embodiment 1 where only the front crossbeam 4 has a notch 102, in Embodiment 7, only the left longitudinal beam 2 has a notch 102, or only the right longitudinal beam 3 has a notch 102, or only the rear crossbeam 5 has a notch 102; or, at least two of the left longitudinal beam 2, right longitudinal beam 3, front crossbeam 4 and rear crossbeam 5 have the notch 102.

[0109] Additionally, when some of the beams, including the left longitudinal beam 2, right longitudinal beam 3, front crossbeam 4, and rear crossbeam 5, have notches 102, the number of notches 102 on that beam is usually one. In other embodiments, when some of the beams, including the left longitudinal beam 2, right longitudinal beam 3, front crossbeam 4, and rear crossbeam 5, have notches 102, the number of notches 102 on that beam can also be multiple. In this case, one pump unit 1 can be installed within one notch 102. Here, "multiple" means two or more.

[0110] When a notch 102 is provided on the longitudinal beam (i.e., left longitudinal beam 2 and / or right longitudinal beam 3), the longitudinal beam can also be broken at the notch 102. In this case, the longitudinal beam is divided into a front section and a rear section by the notch 102, and the pump unit 1 connects the front section and the rear section of the longitudinal beam. At this time, the pump unit 1 can be located between the front crossbeam 4 and the rear crossbeam 5. Moreover, at this time, at least one of the front section and the rear section of the longitudinal beam can be connected to the pump unit 1 by the aforementioned mounting bracket 6. During assembly, only the direction of the mounting bracket 6 needs to be adjusted.

[0111] Example 8 Unlike Embodiment 1, in Embodiment 8, pump unit 1 may also include a single pump. In this case, the pump can provide fluid pressure to the two active dampers 20 through a corresponding control valve or the like. In this case, pump unit 1 may only have the aforementioned first pump 15.

[0112] This utility model embodiment also provides an active suspension system 100, which includes an active shock absorber 20 and a subframe assembly 10 as described in any of the above embodiments.

[0113] The upper end of the active shock absorber 20 can be connected to the vehicle body, and the lower end of the active shock absorber 20 can be a moving component connected to the wheel side, such as the lower control arm connected to the suspension.

[0114] In addition, there are two active dampers 20, which are located on the left and right sides of the subframe 101 respectively, and the pump unit 1 provides fluid pressure to the two active dampers 20 respectively.

[0115] The pump unit 1 may include two pumps (such as the first pump 15 and the second pump 16 mentioned above), with one pump providing fluid pressure to an active damper 20.

[0116] This utility model embodiment also provides a vehicle, including the subframe assembly 10 described in any of the above embodiments or the active suspension system 100 described in any of the above embodiments.

[0117] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A subframe assembly, characterized in that, Including the subframe and pump unit; The subframe has a notch, and the pump unit is installed in the notch; The pump unit is used to provide fluid pressure to the active damper.

2. The subframe assembly according to claim 1, characterized in that, The subframe includes a left longitudinal beam, a right longitudinal beam, a front crossbeam, and a rear crossbeam. The left longitudinal beam and the right longitudinal beam are spaced apart from each other in the left-right direction of the vehicle. The front crossbeam is connected between the front end of the left longitudinal beam and the front end of the right longitudinal beam. The rear crossbeam is connected between the rear end of the left longitudinal beam and the rear end of the right longitudinal beam. At least one of the left longitudinal beam, right longitudinal beam, front crossbeam, and rear crossbeam is provided with the notch.

3. The subframe assembly according to claim 2, characterized in that, At least one of the front crossbeam and the rear crossbeam is a mounting crossbeam, the mounting crossbeam is provided with the notch, the mounting crossbeam is divided into a left section and a right section by the notch, and the pump unit is connected between the left section and the right section of the mounting beam.

4. The subframe assembly according to claim 3, characterized in that, It also includes a mounting bracket, and at least one of the left and right sections of the mounting beam is connected to the pump unit via the mounting bracket.

5. The subframe assembly according to claim 4, characterized in that, The pump unit is provided with a first interface and a second interface. The first interface is adapted to be connected to the active vibration damper through a first pipeline, and the second interface is adapted to be connected to the active vibration damper through a second pipeline. The mounting bracket has a clearance window on the side near the pump unit, which is used to avoid the first pipeline and the second pipeline.

6. The subframe assembly according to claim 4, characterized in that, The mounting bracket includes a first connecting plate and a second connecting plate; The first connecting plate is connected to the top surface of the mounting beam, and the end of the first connecting plate near the notch is connected to the top of the second connecting plate; or, the first connecting plate is connected to the bottom surface of the mounting beam, and the end of the first connecting plate near the notch is connected to the bottom of the second connecting plate. The second connecting plate extends into the notch and connects to the pump unit.

7. The subframe assembly according to claim 4, characterized in that, Two mounting brackets are provided, one of which is connected between the left section of the mounting beam and the pump unit, and the other of which is connected between the right section of the mounting beam and the pump unit.

8. The subframe assembly according to claim 4, characterized in that, It also includes vibration damping components; the mounting bracket is connected to the pump unit through the vibration damping components.

9. The subframe assembly according to claim 2, characterized in that, The notch is provided in one of the left longitudinal beam, right longitudinal beam, front crossbeam and rear crossbeam, and the pump unit includes a first pump and a second pump connected to each other. The first pump is used to provide fluid pressure to one of the active dampers, and the second pump is used to provide fluid pressure to the other active damper.

10. The subframe assembly according to claim 2, characterized in that, Both the front and rear crossbeams are provided with the notches; the pump unit includes a first pump and a second pump; The first pump is disposed in the notch on the front crossbeam for providing fluid pressure to one of the active dampers; the second pump is disposed in the notch on the rear crossbeam for providing fluid pressure to the other active damper.

11. An active suspension system, characterized in that, Includes an active damper and a subframe assembly as described in any one of claims 1 to 10.

12. A vehicle, characterized in that, Includes the subframe assembly as described in any one of claims 1 to 10 or the active suspension system as described in claim 11.

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