Active damping systems and vehicles

Abstract

This invention discloses an active damping system and vehicle, including an active damper, a connecting casting, and an oil pump. The active damper includes a connecting seat and a cylinder body. The cylinder body has a piston rod, and the piston rod has a piston body that divides the interior of the cylinder body into two active oil chambers. The outer periphery of the connecting seat has a first oil hole and a second oil hole spaced apart, and the first oil hole and the second oil hole communicate with the two active oil chambers respectively. The connecting casting has a first connecting hole, and the first connecting hole has a first annular oil groove and a second annular oil groove. The first annular oil groove communicates with the first oil hole, and the second annular oil groove communicates with the second oil hole. The interior of the connecting casting has at least two internal flow channels, and the at least two internal flow channels communicate with the first annular oil groove and the second annular oil groove respectively. The two pump ports of the oil pump are respectively connected to the at least two internal flow channels. This invention greatly simplifies the number of assembly parts, improves assembly efficiency, and no longer encroaches on the space of the suspension wheel sides, engine compartment, and underfloor.

Description

Technical Field

[0001] This invention relates to the technical field of automobiles, specifically to an active damping system and vehicle. Background Technology

[0002] Currently, active suspension has become a major technology in the development of suspension technology. Active suspension can achieve active movement through active shock absorbers, thereby dealing with the impact of uneven road surfaces on the vehicle. However, current active suspension products are generally complex in structure and have a large layout envelope. The main reason is that the active shock absorbers need to occupy the space of the suspension wheel, engine compartment and under the floor, which leads to problems such as limited suspension layout space, difficult assembly, and relatively poor ease of assembly and maintenance. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention provides an active damping system and vehicle that simplifies the structure of the active damping system, reduces the number of components, meets the layout space requirements through an integrated structure, and does not encroach on the space around the suspension wheels, engine compartment, and under the floor.

[0004] An active vibration damping system according to a first aspect of an embodiment of the present invention includes:

[0005] An active damper includes a connecting seat and a cylinder body connected to each other. The cylinder body is slidably provided with two active oil chambers. The outer periphery of the connecting seat is provided with a first oil hole and a second oil hole at intervals along the axial direction of the active damper. The first oil hole and the second oil hole are respectively connected to the two active oil chambers.

[0006] A connecting casting is provided with a first connecting hole and a first mounting part. The connecting seat is sealed and fitted into the first connecting hole. The inner peripheral wall of the first connecting hole is provided with a first annular oil groove and a second annular oil groove at intervals along the axial direction. The first annular oil groove communicates with the first oil hole, and the second annular oil groove communicates with the second oil hole. The interior of the connecting casting is provided with at least two non-intersecting internal flow channels, and the at least two internal flow channels communicate with the first annular oil groove and the second annular oil groove respectively.

[0007] An oil pump is connected to the first mounting part, and the two pump ports of the oil pump are respectively connected to at least two of the internal flow channels.

[0008] The active vibration damping system according to embodiments of the present invention has at least the following beneficial effects:

[0009] The cylinder body of the present invention is connected to the connecting casting via a connecting seat. During connection, the connecting seat is sealed and fitted into the first connecting hole, making the first annular oil groove communicate with the first oil hole and the second annular oil groove communicate with the second oil hole. At this time, it is only necessary to control the relative position of the connecting seat and the first connecting hole in the axial direction, while the relative position of the connecting seat and the first connecting hole in the circumferential direction does not affect the communication between the oil hole and the annular oil groove, thereby improving the ease of assembly. At this time, the two pump ports of the oil pump are connected to the two active oil chambers through the internal flow channel in the connecting casting, the first annular oil groove, the second annular oil groove, the first oil hole, and the second oil hole, respectively, so as to realize the action of the active shock absorber. The oil pipes, brackets, clips, and connectors required by traditional active shock absorbers are no longer used, which greatly simplifies the number of assembly parts, reduces assembly costs, improves assembly efficiency, and no longer occupies the space of the suspension wheel side, engine compartment, and under the floor.

[0010] According to some embodiments of the present invention, the connecting seat is provided with a sleeve groove, and one end of the cylinder body is fitted into the sleeve groove;

[0011] The cylinder body includes an inner cylinder and an outer cylinder. The inner cylinder extends into the sleeve groove. A first sealing ring is provided between the outer circumference of the inner cylinder and the inner circumference of the sleeve groove. The first oil hole and the second oil hole are respectively located at both ends of the first sealing ring. The inner cylinder and the outer cylinder are arranged in an inner-outer sleeve configuration. The outer cylinder is detachably sleeved with the outer end of the sleeve groove. A flow gap is formed between the outer circumference of the inner cylinder and the inner circumference of the outer cylinder. The first oil hole communicates with one of the active oil chambers through the flow gap. The second oil hole communicates with the other active oil chamber through the extension port of the inner cylinder.

[0012] According to some embodiments of the present invention, the outer cylinder is threadedly connected to the sleeve groove, a second sealing ring is provided between the outer cylinder and the sleeve groove, a second annular groove is provided on the inner peripheral wall of the sleeve groove, and the second sealing ring is installed in the second annular groove.

[0013] According to some embodiments of the present invention, the inner peripheral wall of the sleeve groove is provided with a first annular groove, and the first sealing ring is installed in the first annular groove.

[0014] According to some embodiments of the present invention, the cylinder body further includes a sealing sleeve, which is sleeved on the end of the inner cylinder and the outer cylinder away from the connecting seat. The piston rod is in a sealing sliding fit with the sealing sleeve. The outer peripheral wall of the end of the inner cylinder away from the connecting seat is provided with an oil port communicating between one of the active oil chambers and the flow gap.

[0015] According to some embodiments of the present invention, the bottom of the socket is provided with a bottom cover, and a support seat is provided between the bottom cover and the extension end of the inner cylinder.

[0016] According to some embodiments of the present invention, the outer periphery of the connecting seat is provided with a limiting step, the limiting step abuts against one end of the first connecting hole, and a fastening threaded ring is threadedly fitted onto the outer periphery of the connecting seat, the fastening threaded ring abuts against the other end of the first connecting hole.

[0017] According to some embodiments of the present invention, the first connecting hole is a stepped hole structure, and the inner diameter of the first connecting hole gradually decreases along the limiting step toward the fastening threaded ring.

[0018] According to some embodiments of the present invention, at least three third sealing rings are sleeved between the outer peripheral wall of the connecting seat and the inner peripheral wall of the first connecting hole, and the first annular oil groove and the second annular oil groove are sequentially disposed between the at least three third sealing rings.

[0019] According to some embodiments of the present invention, the outer peripheral wall of the connecting seat is provided with at least three third annular grooves, and the third sealing ring is installed in the third annular grooves.

[0020] According to some embodiments of the present invention, the active vibration damping system further includes an accumulator, the connecting casting is provided with a second mounting portion connected to the accumulator, and the accumulator is connected in series to one of the internal flow channels.

[0021] A vehicle according to a second aspect of an embodiment of the present invention includes the above-described active damping system.

[0022] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the active vibration reduction system of the present invention;

[0025] Figure 2 for Figure 1 Sectional view of section AA;

[0026] Figure 3 for Figure 2 A magnified view of part B in the middle section;

[0027] Figure 4 for Figure 2 A magnified view of part C in the middle;

[0028] Figure 5 This is a schematic diagram of the connecting casting of the present invention;

[0029] Figure label:

[0030] Active damper 100; connecting seat 110; first oil hole 111; second oil hole 112; sleeve groove 113; second annular groove 1131; first annular groove 1132; bottom cover 1133; support seat 1134; bottom valve 1135; limiting step 114; third annular groove 115; cylinder body 120; upper active oil chamber 121; lower active oil chamber 122; inner cylinder 123; oil port 1231; outer cylinder 124; abutment ring seat 1241; first sealing ring 125; flow gap 126; second sealing ring 127; sealing sleeve 128; top cover 129; piston rod 130; piston body 131; third sealing ring 140; fastening threaded ring 150;

[0031] Connecting casting 200; first connecting hole 210; first annular oil groove 211; second annular oil groove 212; internal flow channel 220; second connecting hole 230; third connecting hole 240;

[0032] Oil pump 300;

[0033] 400 accumulator. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention 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 invention.

[0036] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0039] Current active suspension products generally have complex structures and large layout envelopes, which require encroaching on the space around the suspension wheels, engine compartment and under the floor, resulting in problems such as limited suspension layout space and difficult assembly. As a result, the ease of assembly and maintenance and the structural expandability are relatively poor.

[0040] Furthermore, this embodiment of the invention provides an active damping system that greatly simplifies the structure of the active damper, reduces the number of components, and simplifies the assembly process of the active damper as much as possible. Through extreme topology optimization design, within the limited arrangement space of the wheel arch, the active damper construction structure is designed with precision and ingenious structure design, integrating the active suspension actuation unit around the suspension without encroaching on the space under the cabin and floor.

[0041] like Figure 1 As shown, the active vibration reduction system of this embodiment includes an active vibration damper 100, a connecting casting 200, and an oil pump 300.

[0042] like Figure 2 As shown, the active vibration damper 100 of the present invention extends vertically. In other embodiments, depending on different installation requirements, the active vibration damper 100 may be tilted in the vertical direction or extend in other directions. This embodiment takes the active vibration damper 100 extending vertically as an example. The active vibration damper 100 includes a connecting seat 110 and a cylinder body 120. The lower end of the cylinder body 120 is connected to the connecting seat 110. A piston rod 130 is slidably installed in the cylinder body 120 in the vertical direction. The upper end of the piston rod 130 extends from the upper part of the cylinder body 120. The piston rod 130 extends outwards, while the lower end of the piston rod 130 extends into the cylinder body 120. The lower end of the piston rod 130 is connected to the piston body 131, which divides the interior of the cylinder body 120 into two active oil chambers. The two active oil chambers are respectively located on the upper and lower sides of the piston body 131. The two active oil chambers are divided into an upper active oil chamber 121 and a lower active oil chamber 122. Through the active pressure difference between the upper and lower sides of the piston body 131, the piston rod 130 actively obtains a certain force, thereby enabling the wheel side to move actively and thus cope with the impact caused by uneven road surface.

[0043] like Figure 4 As shown, the connecting seat 110 of this embodiment is provided with a first oil hole 111 and a second oil hole 112 on its outer periphery. The first oil hole 111 is connected to the upper active oil chamber 121, and the second oil hole 112 is connected to the lower active oil chamber 122. The first oil hole 111 and the second oil hole 112 are arranged at intervals in the vertical direction.

[0044] The connecting casting 200 is provided with a first connecting hole 210, which extends vertically. The connecting seat 110 is sealed inside the first connecting hole 210 to connect the connecting casting 200 and the active damper 100. The inner circumferential wall of the first connecting hole 210 is provided with a first annular oil groove 211 and a second annular oil groove 212. The first annular oil groove 211 and the second annular oil groove 212 are spaced apart in the vertical direction. The distance between the first annular oil groove 211 and the second annular oil groove 212 is equal to the distance between the first oil hole 111 and the second oil hole 112, so that the first annular oil groove 211 is relatively connected to the first oil hole 111, and the second annular oil groove 212 is relatively connected to the second oil hole 112. Therefore, during assembly, it is only necessary to control the relative position of the connecting seat 110 and the first connecting hole 210 in the axial direction. The relative position of the connecting seat 110 and the first connecting hole 210 in the circumferential direction does not affect the connection between the oil hole and the annular oil groove, thereby improving the convenience of assembly.

[0045] like Figure 4 and Figure 5 As shown, at least two non-intersecting internal flow channels 220 are provided inside the connecting casting 200. The at least two internal flow channels 220 are respectively connected to the first annular oil groove 211 and the second annular oil groove 212. The oil pump 300 is installed on the connecting casting 200. The oil pump 300 is provided with two pump ports, one of which is a negative pressure port and the other is a positive pressure port. During the operation of the oil pump 300, the direction of pressurization of the oil pump 300 can be controlled so that the two pump ports can be switched.

[0046] The two pump ports of the oil pump 300 are respectively connected to at least two internal flow channels 220. It can be understood that one of the pump ports of the oil pump 300 is connected to the upper active oil chamber 121 through one of the internal flow channels 220, the first annular oil groove 211, and the first oil hole 111, while the other pump port of the oil pump 300 is connected to the lower active oil chamber 122 through another internal flow channel 220, the second annular oil groove 212, and the second oil hole 112. That is to say, the oil pump 300 has two oil circuits, which are a return oil circuit and a supply oil circuit. The oil pump 300 can receive the command of the whole vehicle control to pump oil to achieve the pressure difference between the two oil circuits. The pressure difference of the oil pump 300 is connected through the internal flow channels 220, so that the pressure difference achieved by the oil pump 300 acts on the upper active oil chamber 121 on the upper side and the lower active oil chamber 122 on the lower side of the piston body 131. When the suspension moves, energy recovery can be achieved through the passive operation of the oil pump 300.

[0047] Among them, the connecting casting 200 adopts the aluminum casting process, and the internal chamber and flow channel are realized by sand core. The internal flow channel 220 of the connecting casting 200 is designed after simulation calculation and optimization. The design principle of the diameter, direction and ridge fillet of the internal flow channel 220 is to minimize the pressure loss of the oil. Through this design, the entire system maximizes mechanical efficiency and minimizes energy consumption.

[0048] A first mounting portion is provided on the outer side of the connecting casting 200. The first mounting portion is used to fix the oil pump 300. The first mounting portion adopts a hole structure, which means that, as Figure 5 As shown, the connecting casting 200 is provided with a second connecting hole 230. The connecting casting 200 is connected to the oil pump 300 by bolts. The mating surface of the sealing ring is assembled in the second connecting hole 230, and the oil circuit is separated from the oil pump 300 through the sealing ring.

[0049] The present invention integrates the internal flow channel 220 into the connecting casting 200, thereby eliminating the need for components such as oil pipes, brackets, clips and joints required by the traditional active shock absorber 100, greatly simplifying the number of assembly parts, reducing assembly costs and improving assembly efficiency, and no longer encroaching on the space of the suspension wheel side, engine compartment and under the floor.

[0050] like Figure 4 As shown, the connecting seat 110 of this embodiment is provided with a sleeve groove 113 extending vertically. The lower end of the cylinder body 120 is fitted into the sleeve groove 113. Specifically, the cylinder body 120 of this embodiment includes an inner cylinder 123 and an outer cylinder 124. The inner cylinder 123 extends into the sleeve groove 113. A first sealing ring 125 is provided between the outer periphery of the inner cylinder 123 and the inner periphery of the sleeve groove 113. The first oil hole 111 and the second oil hole 112 are respectively provided. The inner cylinder 123 and the outer cylinder 124 are arranged in an inner-outer sleeve configuration, with the lower end of the outer cylinder 124 detachably sleeved to the upper end of the sleeve groove 113. A flow gap 126 is formed between the outer circumference of the inner cylinder 123 and the inner circumference of the outer cylinder 124. The first oil hole 111 communicates with the upper active oil chamber 121 through the flow gap 126, and the second oil hole 112 communicates with the lower active oil chamber 122 through the extension port of the inner cylinder 123.

[0051] It is understood that oil storage cavities are formed on the upper and lower sides of the first sealing ring 125, the two oil storage cavities are separated by the first sealing ring 125, and the two oil storage cavities are respectively connected to the first oil hole 111 and the second oil hole 112.

[0052] The outer cylinder 124 is detachably connected to the socket 113, thereby enabling the use of different outer cylinders 124 to be compatible with different suspensions, thus achieving modular design and allowing for vehicle upgrades. The outer cylinder 124 is compatible with air springs or coil springs.

[0053] In this embodiment, the outer cylinder 124 adopts a replaceable structure to match different types of springs, thereby achieving compatibility between coil spring and air spring models. This allows the active suspension to extend from air spring suspension to coil spring, realizing the change in arrangement from coil spring to air spring, increasing the diversity of suspension configurations for some models, providing users with multiple suspension types, and improving product competitiveness.

[0054] In some embodiments, an abutment ring seat 1241 is fitted around the outer periphery of the outer cylinder 124. The abutment ring seat 1241 is adjustable up and down and is used to install a hollow spring or a coil spring.

[0055] like Figure 4 As shown, in this embodiment, the outer cylinder 124 is threaded to the sleeve groove 113 to make the outer cylinder 124 detachable. The inner circumference of the sleeve groove 113 is provided with an internal thread, while the outer circumference of the lower end of the outer cylinder 124 is provided with an external thread.

[0056] Furthermore, a second sealing ring 127 is provided between the outer cylinder 124 and the sleeve groove 113 to improve the sealing performance between the outer cylinder 124 and the sleeve groove 113.

[0057] In this embodiment of the invention, a second annular groove 1131 is provided on the inner peripheral wall of the sleeve groove 113, and a second sealing ring 127 is installed in the second annular groove 1131 to achieve the limiting installation of the second sealing ring 127. When disassembling and assembling the outer cylinder 124, only the outer cylinder 124 needs to be manipulated.

[0058] like Figure 3 As shown, the cylinder body 120 of this embodiment also includes a sealing sleeve 128. The sealing sleeve 128 is sleeved on the upper end of the inner cylinder 123 and the outer cylinder 124. The piston rod 130 is in a sealing sliding fit with the sealing sleeve 128. The sealing sleeve 128 is used to block the upper end of the inner cylinder 123 and to block the flow gap 126 between the inner cylinder 123 and the outer cylinder 124. In this embodiment, a top cover 129 is also sleeved on the upper end of the outer cylinder 124 to play a protective role.

[0059] like Figure 3 As shown, an oil port 1231 is provided on the outer peripheral wall of the upper end of the inner cylinder 123, which is connected between the upper active oil chamber 121 and the flow gap 126. The first oil hole 111 is connected to the upper active oil chamber 121 through the flow gap 126 and the oil port 1231.

[0060] Regarding the installation of the first sealing ring 125, as follows: Figure 4 As shown, a first annular groove 1132 is provided on the inner peripheral wall of the sleeve groove 113, and a first sealing ring 125 is installed in the first annular groove 1132. When disassembling and assembling the inner cylinder 123, only the inner cylinder 123 needs to be manipulated.

[0061] In this embodiment, the socket 113 is arranged vertically. A bottom cover 1133 is provided at the bottom of the socket 113. The bottom cover 1133 is welded and sealed to the bottom of the socket 113. A support seat 1134 is provided between the bottom cover 1133 and the lower end of the inner cylinder 123. The support seat 1134 is used to support the lower end of the inner cylinder 123. A bottom valve 1135 is also provided in the lower end of the inner cylinder 123. The oil storage chamber on the lower side of the first sealing ring 125 is connected to the lower active oil chamber 122 through the bottom valve 1135. The bottom cover 1133 is connected to a vibration damping connecting fork for installation connection.

[0062] In this embodiment, when assembling the active vibration damper 100, the bottom cover 1133 is pre-welded and sealed to the bottom of the sleeve groove 113. Then, the support seat 1134 and the bottom valve 1135 are installed at the lower end of the inner cylinder 123. The lower end of the inner cylinder 123 is inserted into the sleeve groove 113 from top to bottom. Then, the sealing sleeve 128 and the outer cylinder 124 are installed. The piston rod 130, the first sealing ring 125 and the second sealing ring 127 are pre-installed.

[0063] Furthermore, such as Figure 4 As shown, at least three third sealing rings 140 are sleeved between the outer peripheral wall of the connecting seat 110 and the inner peripheral wall of the first connecting hole 210. The first annular oil groove 211 and the second annular oil groove 212 are sequentially arranged between the at least three third sealing rings 140. Furthermore, the first oil hole 111 and the second oil hole 112 are sequentially arranged between the at least three third sealing rings 140. The third sealing rings 140 can improve the sealing performance between the connecting seat 110 and the first connecting hole 210, and also prevent oil leakage between the two oil circuits with hydraulic differential.

[0064] The number of first oil holes 111 and second oil holes 112 can be set to multiple. Multiple first oil holes 111 are distributed in a ring along the first annular oil groove 211, while multiple second oil holes 112 are distributed in a ring along the second annular oil groove 212.

[0065] Regarding the connection method between the connecting casting 200 and the connecting seat 110, a limiting step 114 is provided on the outer periphery of the lower end of the connecting seat 110. The limiting step 114 abuts against the lower end of the first connecting hole 210. A fastening threaded ring 150 is threaded on the outer periphery of the upper end of the connecting seat 110. The fastening threaded ring 150 abuts against the upper end of the first connecting hole 210. It can be understood that after the connecting seat 110 is inserted from bottom to top, the fastening threaded ring 150 is then fitted in and fastened by the fastening threaded ring 150.

[0066] In this embodiment, the outer peripheral wall of the connector 110 is provided with at least three third annular grooves 115, and the third sealing rings 140 are installed in the third annular grooves 115 to fix the third sealing rings 140. During assembly, the connector 110 can be directly inserted into the first connecting hole 210.

[0067] Furthermore, to facilitate insertion, the first connecting hole 210 has a stepped hole structure, with the inner diameter of the first connecting hole 210 gradually decreasing from bottom to top. Correspondingly, the outer peripheral wall of the connecting seat 110 also has a pagoda-shaped structure. This design allows the connecting seat 110 to be inserted more easily when assembled from bottom to top. Since the third sealing ring 140 and the inner peripheral wall of the first connecting hole 210 need to be matched with high precision to ensure sealing, assembly difficulties can occur when the dimensions are precisely matched. Using this structural design can effectively improve the ease of assembly.

[0068] Furthermore, such as Figure 1 As shown, the active vibration damping system also includes an accumulator 400. The connecting casting 200 is provided with a second mounting part that connects to the accumulator 400. The second mounting part is a hole structure. Furthermore, the connecting casting 200 in this embodiment is provided with a third connecting hole 240. The accumulator 400 is connected to the third connecting hole 240 by a thread. The accumulator 400 is connected in series in one of the internal flow channels 220. The accumulator 400 in this embodiment is filled with high-pressure gas, and a valve system is provided at the end of the accumulator 400 to achieve basic damping of the vibration damper. This ensures that there is a basic pressure inside the active vibration damping system, so that the active vibration damper 100 still has a certain damping force when the oil pump 300 fails.

[0069] Furthermore, based on the layout conditions and energy storage volume requirements, a variable diameter structure was creatively proposed. The middle and rear parts of the accumulator 400 adopt a larger diameter structure to ensure the gas volume, while the connection position adopts a smaller diameter due to layout and standardization requirements. Through this structural design, both the layout space requirements and performance requirements are met.

[0070] This invention simplifies the flow channel and integrates the accumulator 400, oil pump 300, and active vibration damper 100. Through a unique structural design, the connecting casting 200 and the active vibration damper 100 are reliably and easily connected, reducing the assembly complexity of the system, improving the efficiency of assembly and subsequent maintenance, and reducing production and after-sales costs.

[0071] This invention proposes a highly integrated, lightweight, and unified active vibration damping system. Through a one-piece cast connecting casting 200 and its unique sand core design, an internal flow channel 220 is formed connecting the oil pump 300, the active vibration damper 100, and the accumulator 400. The oil pump 300 and the accumulator 400 are integrated onto the connecting casting 200 using threads and bolts. This eliminates the need for components such as oil pipes, supports, clips, and connectors required in traditional active vibration dampers 100, significantly reducing the number of components, lowering assembly costs, and improving assembly efficiency. It also allows for flexible disassembly and replacement of components, reducing maintenance costs and increasing component versatility.

[0072] This invention also proposes a vehicle that includes the aforementioned active damping system. Specifically, the vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. The vehicle can also be a commercial vehicle, such as a van, bus, small truck, or large semi-trailer. The vehicle can be a gasoline-powered vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An active vibration damping system, characterized in that, include: An active damper includes a connecting seat and a cylinder body connected to each other. The cylinder body is provided with two active oil chambers. The outer periphery of the connecting seat is provided with a first oil hole and a second oil hole at intervals along the axial direction of the active damper. The first oil hole and the second oil hole are respectively connected to the two active oil chambers. A connecting casting is provided with a first connecting hole and a first mounting part. The connecting seat is sealed and fitted into the first connecting hole. The inner peripheral wall of the first connecting hole is provided with a first annular oil groove and a second annular oil groove at intervals along the axial direction. The first annular oil groove communicates with the first oil hole, and the second annular oil groove communicates with the second oil hole. The interior of the connecting casting is provided with at least two non-intersecting internal flow channels, and the at least two internal flow channels communicate with the first annular oil groove and the second annular oil groove respectively. An oil pump is connected to the first mounting part, and the two pump ports of the oil pump are respectively connected to at least two of the internal flow channels; The connecting seat is provided with a sleeve groove, and one end of the cylinder body is fitted into the sleeve groove; The cylinder body includes an inner cylinder and an outer cylinder. The inner cylinder extends into the sleeve groove. A first sealing ring is provided between the outer circumference of the inner cylinder and the inner circumference of the sleeve groove. The first oil hole and the second oil hole are respectively located at both ends of the first sealing ring. The inner cylinder and the outer cylinder are arranged in an inner-outer sleeve configuration. The outer cylinder is detachably sleeved with the outer end of the sleeve groove. A flow gap is formed between the outer circumference of the inner cylinder and the inner circumference of the outer cylinder. The first oil hole communicates with one of the active oil chambers through the flow gap. The second oil hole communicates with the other active oil chamber through the extension port of the inner cylinder. The outer periphery of the connector is provided with a limiting step, which abuts against one end of the first connecting hole. The outer periphery of the connector is threaded with a fastening threaded ring, which abuts against the other end of the first connecting hole.

2. The active vibration reduction system according to claim 1, characterized in that: The outer cylinder is threaded to the sleeve groove, and a second sealing ring is provided between the outer cylinder and the sleeve groove. The inner circumferential wall of the sleeve groove is provided with a second annular groove, and the second sealing ring is installed in the second annular groove.

3. The active vibration reduction system according to claim 1, characterized in that: The inner circumferential wall of the socket is provided with a first annular groove, and the first sealing ring is installed in the first annular groove.

4. The active vibration reduction system according to claim 1, characterized in that: The bottom of the socket is provided with a bottom cover, and a support seat is provided between the bottom cover and the extension end of the inner cylinder.

5. The active vibration reduction system according to claim 1, characterized in that: The first connecting hole is a stepped hole structure, and the inner diameter of the first connecting hole gradually decreases along the limiting step towards the fastening threaded ring.

6. The active vibration reduction system according to claim 1, characterized in that: At least three third sealing rings are fitted between the outer peripheral wall of the connecting seat and the inner peripheral wall of the first connecting hole, and the first annular oil groove and the second annular oil groove are sequentially arranged between the at least three third sealing rings.

7. The active vibration reduction system according to claim 6, characterized in that: The outer peripheral wall of the connector is provided with at least three third annular grooves, and the third sealing ring is installed in the third annular grooves.

8. The active vibration reduction system according to claim 1, characterized in that: The active vibration reduction system also includes an energy storage device, and the connecting casting is provided with a second mounting part connected to the energy storage device, wherein the energy storage device is connected in series with one of the internal flow channels.

9. A vehicle, characterized in that: It includes the active vibration damping system as described in any one of claims 1 to 8.

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