A vehicle pressure wave split-type damper actuator

Abstract

This utility model relates to the field of vehicle pressure wave protection technology, and in particular to a split-type damper actuator for vehicle pressure waves. It includes an actuator body and a power supply box. The actuator body comprises a base plate, a movable plate, a support frame, a support rod, an outer guide rod, a flat component, a mounting plate, a reinforcing plate, a guide, a cover, and a driver. The base plate and the support frame are connected by the support rod. The movable plate has openings on both sides through which the support rod and the outer guide rod pass. The outer guide rod is symmetrically installed at the center of each support rod on the base plate and fixed to the movable plate by the flat component. The mounting plate and the reinforcing plate are symmetrically installed at intervals at the bottom of the support frame. The guide is connected to the upper surface of the movable plate. The cover is fixed to the support frame by the mounting plate. The driver is located inside the cover and connected to the guide. This utility model separates the actuator body and the power supply box, expanding the vehicle compatibility range and offering advantages such as precise damper opening and ease of troubleshooting and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of vehicle pressure wave protection technology, and in particular to a vehicle pressure wave split-type damper actuator. Background Technology

[0002] The formation of vehicle pressure waves is unavoidable. When a vehicle passes through a tunnel at high speed or meets another vehicle, the air is rapidly compressed, creating transient pressure fluctuations. The sudden opening and closing of doors and windows can also cause pressure imbalances within the confined space of the vehicle. In addition to these external environmental factors, the periodic intake and exhaust of the vehicle's internal combustion engine and the starting and stopping of the turbocharger will also cause airflow pulsations, affecting the normal operation of the vehicle.

[0003] The vehicle pressure wave protection system monitors air pressure changes in real time using pressure sensors and other equipment, and achieves pressure protection by quickly adjusting the airflow balance inside and outside the vehicle. Dynamic damper control is one of the core protection measures, which adjusts the damper opening to change the airflow path and thus counteract pressure fluctuations. For example, when the vehicle is traveling in a tunnel, the external circulation damper can be temporarily closed by the damper actuator to isolate external pressure shocks.

[0004] Some existing damper actuators installed on trains are designed to meet lightweight requirements, featuring compact structures and ease of installation. However, their damper opening performance is not ideal in practical applications. For example, patent CN222629312U integrates a control box, power supply box, and drive assembly, using a ball screw inserted into a rotating shaft to drive the lifting assembly and control the damper opening, saving installation space. An elastic limiter is also placed at the top of the screw for positioning and noise reduction. However, since the screw is the only supporting component at the center of the lifting assembly, the cumulative errors of other parts cause the actual stroke of the screw pushing the damper to be too large. When this stroke exceeds the screw's limit length, jamming occurs. Furthermore, because the screw and limiter are located inside an integrated device, the limiter cannot be directly observed and its position adjusted, resulting in low efficiency in troubleshooting and maintenance. In addition, although the aforementioned integrated damper actuator is compact and easy to install, it is not compatible with vehicles that have their power modules installed in the equipment compartment and integrated with other power systems. In such cases, the power supply may need to be further separated for compatibility, thus limiting its application scope.

[0005] Therefore, in response to the problems that the damper opening effect is easily affected by machining errors, the control module components are inconvenient to maintain, and the integrated structure of the damper actuator has limited adaptability, it is necessary to further adjust the structure and working mechanism of the damper actuator. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vehicle pressure wave split-type damper actuator.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A vehicle pressure wave split-type damper actuator includes an actuator body and a power supply box. The actuator body includes a base plate, a movable plate, a support frame, support rods, outer guide rods, flat parts, mounting plates, reinforcing plates, guides, a cover, and a driver. The base plate and the support frame are connected by support rods. There are four support rods in total, symmetrically installed on both sides of the base plate and fixed to the support frame by hexagonal nuts at the top. The movable plate has openings on both sides through which the support rods and outer guide rods pass. There are two outer guide rods in total, symmetrically installed at the center of each support rod on each side of the base plate and fixed to the movable plate by flat parts. There are two mounting plates and two reinforcing plates, symmetrically installed at intervals at the bottom of the support frame. The guide is connected to the upper surface of the movable plate. The cover is fixed to the support frame by the mounting plate. The driver is located inside the cover and connected to the guide.

[0009] Furthermore, the guide includes a guide plate, a guide base, a ball screw, guide rods, a waterproof cover, and a sealing ring. The guide plate includes a guide slice, a guide bearing, a guide through hole, and a guide plate sound-absorbing pad. The guide slice is a hollow component. The guide bearing is installed in the hollow position of the guide slice. There are four guide through holes, located at the four corners of the guide slice. There are four guide plate sound-absorbing pads, each installed on the lower end face of the guide through hole. The guide base is connected to the movable plate. The ball screw is fixed at the center of the guide base and passes upward through the guide plate. There are four guide rods, fixed at the four corners of the guide base. A limit step is installed at the bottom of each guide rod, and a guide washer and a guide rod sound-absorbing pad are installed at the top and fixed by a flange nut. The guide rods pass upward through the guide through holes. The lower end of the waterproof cover is connected to the guide base, and the upper end is connected to the guide plate. The sealing ring is installed on the outside of the annular groove at the top of the guide plate.

[0010] Furthermore, the housing includes a lower cover, a housing support, a lower cover through hole, an outer shell, an inner shell, a Hall effect circuit board, an upper cover, and a gland. The lower cover is a hollow component and its bottom end is connected to a guide plate. There are four housing supports, symmetrically fixed on both sides of the lower cover and connected to a mounting plate. There are four lower cover through holes, located at the four corners of the lower cover, aligned with the four guide through holes, and their tops are not higher than the guide rod silencing pads. The outer shell is a hollow component and connected to the lower cover. The inner shell is a hollow component and fixed inside the outer shell, with its top end lower than the top end of the outer shell and its bottom end higher than the bottom end of the outer shell. The Hall effect circuit board is fixed in an annular groove between the outer shell and the inner shell. The upper cover is fixed to the top of the outer shell by a cross-slot screw. There are two glands, both fixed to one side of the upper end of the outer shell.

[0011] Furthermore, the driver includes a rotor, a stator, a brake, and an encoder. The rotor includes a shaft, a rotor core, a rotor connector, a magnet, a tape, a rotor bearing, a lead screw nut, and a lead screw screw. The shaft is a hollow portion with a cylindrical gear fixed at its top and extends into the inner housing. The rotor core is fixed to the outside of the shaft via the rotor connector at its top. The magnet surrounds the rotor core and is fixed to the rotor core via the tape. The rotor bearing is fixed to the outside of the shaft and connected to the inner housing, located at the bottom of the cylindrical gear and the top of the rotor core. The lead screw nut is a hollow component, fixed to the bottom of the shaft and connected to the ball screw via the lead screw screw, and connected to the guide bearing on its outside.

[0012] Furthermore, the stator is mounted at the bottom of the housing and is lower than the Hall circuit board. It includes a stator core, insulating sheets, a winding coil, and slot wedges. The stator core is a hollow component with multiple convex poles. Its outer side is attached to the inner side of the housing and is located at the same horizontal position as the outer side of the rotor core without contacting the magnets. The insulating sheets are fixed to the upper and lower surfaces of the stator core, respectively. The winding coil is mounted around the convex poles of the stator core. The slot wedges are fixed to the slots of the stator core and press the winding coil tightly.

[0013] Furthermore, the brake is located at the top of the inner side of the housing and includes a brake component, a first brake bearing, a second brake bearing, a shaft retainer, stainless steel washers, a brake base, and a brake connector. The brake component is a hollow part with a gear-shaped inner side and an annular top end, which is fitted with a cylindrical gear. The first brake bearing is fixed to the outside of the brake component, and the second brake bearing is fixed to the outside of the brake component and located at the bottom end of the first brake bearing and connected to the inner housing. The shaft retainer is installed between the first brake bearing and the second brake bearing, and stainless steel washers are fixed on both its upper and lower surfaces. The brake base is connected to the brake component and fixed to the outside of the first brake bearing through the brake connector and a cross-slot countersunk screw.

[0014] Furthermore, the encoder includes a fixed plate, a positioning plate, an inner cover, and hexagonal studs. The fixed plate is installed on the top of the cylindrical gear and located inside the brake component. The inner cover is fixed in the circular groove at the bottom of the positioning plate. The positioning plate is located at the top of the inner side of the outer shell, with a height greater than the fixed plate and less than the upper shell cover. It is connected to the brake base and the inner shell sequentially from top to bottom via hexagonal studs.

[0015] Furthermore, the actuator body and the power supply box are installed separately. The actuator body is installed at the vehicle's air inlet and outlet, while the power supply box is integrated with other power systems in the vehicle and installed in the vehicle's power equipment compartment. It is connected to the actuator body via cables and sealed connectors.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) The damper actuator adopts a split structure, with the actuator body and power supply box separated. Placing the actuator body on the equipment greatly reduces the installation space required by the actuator and expands the application range of the actuator.

[0018] (2) The bottom of the support frame is hollow and is connected only by two mounting plates and two reinforcing plates. This reduces the bottom area while ensuring the stability of the support frame, thus saving materials and improving heat dissipation.

[0019] (3) The guide controls the movable plate through four guide rods. The movable plate moves more stably after being subjected to force, which effectively reduces the impact of the cumulative machining error of the inner part of the actuator body on the positioning accuracy of the movable plate. The operating status can be observed through the guide, which is convenient for troubleshooting and maintenance.

[0020] (4) The top of the guide rod and the bottom of the guide plate are respectively provided with guide rod noise reduction pads and guide plate noise reduction pads, which play a buffering role when the movable plate moves up and down, reducing the noise generated when the movable plate reaches the upper and lower limit distances;

[0021] (5) External guide rods are provided on both sides of the actuator body to assist the guide in controlling the movement direction of the movable plate, further reducing the impact of the cumulative machining error of the outer parts of the actuator body on the positioning accuracy of the movable plate;

[0022] (6) A gland is provided on one side of the top of the cover to lock the cover and shield the electromagnetic interference outside the cover, thereby improving the stability of the cover and the robustness of the driver during operation.

[0023] (7) The driver ensures normal motor commutation through Hall sensor and precisely controls the position of movable plate through encoder, thereby achieving precise control of air intake and improving the flexibility of the damper actuator during use. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the installation of the base plate, movable plate, support frame, support rod, outer guide rod and guide device in this utility model.

[0027] Figure 3 This is a schematic diagram of the overall structure of the guide in this utility model.

[0028] Figure 4 This is a schematic diagram of the guide plate in this utility model.

[0029] Figure 5 This is a schematic diagram of the overall structure of the cover in this utility model.

[0030] Figure 6 This is a schematic diagram of the internal structure of the casing in this utility model.

[0031] Figure 7 This is a schematic diagram of the installation of the driver in this utility model.

[0032] Figure 8 This is a schematic diagram of the overall structure of the rotor in this utility model.

[0033] Figure 9 This is a schematic diagram of the installation of the guide base, ball screw, rotor and fixing plate in this utility model.

[0034] Figure 10 This is a schematic diagram of the overall structure of the stator in this utility model.

[0035] Figure 11 This is a schematic diagram of the overall structure of the brake in this utility model.

[0036] Figure 12 This is a schematic diagram of the overall structure of the encoder in this utility model.

[0037] In the diagram: 1. Actuator body, 2. Power supply box, 3. Base plate, 4. Movable plate, 5. Support frame, 6. Support rod, 7. Outer guide rod, 8. Flat part, 9. Mounting plate, 10. Reinforcing plate, 11. Guide, 12. Cover, 13. Driver, 14. Hex nut, 15. Guide plate, 16. Guide base, 17. Ball screw, 18. Guide rod, 19. Waterproof cover, 20. Guide plate, 21. Guide bearing, 22. Guide through hole, 23. Guide plate noise reduction pad, 24. Limiting step, 25. Guide washer, 26. Guide rod noise reduction pad, 27. Flange nut, 28. Lower shell cover, 29. Cover support body, 30. Lower shell cover through hole, 31. Outer shell, 32. Inner shell, 33. Hall effect circuit board, 34. Upper shell 35. Cover, 36. Gland head, 37. Phillips head screw, 38. Rotor, 39. Stator, 40. Brake, 41. Encoder, 42. Shaft, 43. Rotor core, 44. Rotor connector, 45. Magnet, 46. Tape, 47. Rotor bearing, 48. Screw nut, 49. Screw screw, 50. Cylindrical gear, 51. Stator core, 52. Insulating sheet, 53. Winding coil, 54. Slotted wedge, 55. Brake component, 56. First brake bearing, 57. Second brake bearing, 58. Shaft retaining ring, 59. Stainless steel washer, 60. Brake base, 61. Brake connector, 62. Phillips head countersunk screw, 63. Fixing plate, 64. Positioning plate, 65. Inner cover, 66. Hexagonal stud, 67. Sealing ring. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. It should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "fixing", and "connection" should be interpreted broadly. For those skilled in the art, the specific meaning of the above terms in this patent can be understood according to the specific circumstances.

[0039] like Figure 1 As shown, a vehicle pressure wave split-type damper actuator includes an actuator body 1 and a power supply box 2. The actuator body includes a base plate 3, a movable plate 4, a support frame 5, a support rod 6, an outer guide rod 7, a flat piece 8, a mounting plate 9, a reinforcing plate 10, a guide 11, a cover 12, and a driver 13. An upper cover 34 is installed on the top of the cover. Two mounting plates 9 and two reinforcing plates 10 are symmetrically installed at intervals on the bottom of the support frame 5. The two mounting plates 9 are located on the inner side, used to connect the cover 12 and the support frame 5, thereby fixing the cover 12 to the support frame 5. The two reinforcing plates 10 are located on the outer side, used to improve the stability of the support frame 5 during the movement of the movable plate 4. The guide 11 is connected to the top surface of the movable plate 4, and its top end is connected to the cover 12. The driver 13 is installed inside the cover 12 and connected to the guide 11. Figure 2 As shown, there are four support rods 6, symmetrically installed on both sides of the base plate 3, used to connect the base plate 3 and the support frame 5. They pass through the openings on both sides of the support frame 5 and the movable plate 4 from top to bottom. Their bottom ends are connected to the base plate 3, and their top ends are fixed to the support frame 5 by hexagonal nuts 14. There are two outer guide rods 7, located in the middle of each support rod 6. They pass through the support frame 5, the movable plate 4 and the base plate 3 from top to bottom, and are fixed to the movable plate 4 by flat parts 8. They are used to maintain the up and down movement direction of the movable plate 4 and reduce the influence of the machining error of the outer parts of the actuator body 1 on the movement distance of the movable plate 4. The flat parts 8 are diamond-shaped parts with ball bearings at the center.

[0040] like Figures 2-4As shown, the guide 11 includes a guide plate 15, a guide base 16, a ball screw 17, guide rods 18, a waterproof cover 19, and a sealing ring 66. The guide plate 15 also includes a guide piece 20, a guide bearing 21, a guide through hole 22, and a guide plate noise reduction pad 23. The guide piece 20 is a hollow component, with the guide bearing 21 installed in the hollow position. Four guide through holes 22 are installed at the four corners, and a guide plate noise reduction pad 23 is installed on the bottom surface of each guide through hole 22. The guide base 16 is connected to the movable plate 4. The ball screw 17 is fixed at the center of the guide base 16 and passes upward through the guide plate 15. The four guide rods 18 are respectively fixed at the four corners of the guide base 16 to jointly control the movement direction of the movable plate 4, thereby reducing the influence of machining errors of the inner components of the damper actuator on the movement distance of the movable plate 4. The top is equipped with a guide washer 25 and a guide rod silencing pad 26, which are fixed by a flange nut 27 to provide vibration damping during the downward movement of the movable plate 4. The bottom is equipped with a limit step 24 to limit the upward movement distance of the movable plate 4 to control the maximum air intake and protect the cover 12 and its internal components. When it comes into contact with the guide plate silencing pad 23, it also provides vibration damping. The lower end of the waterproof cover 19 is connected to the guide base 16, and the upper end is connected to the guide plate 15. The sealing ring 66 is installed on the outside of the annular groove at the top of the guide plate 15 to provide waterproofing.

[0041] like Figure 5 and Figure 6 As shown, the housing 12 includes a lower cover 28, a housing support 29, a lower cover through hole 30, an outer housing 31, an inner housing 32, a Hall effect circuit board 33, an upper cover 34, and a gland 35. The lower cover 28 is a hollow component with through holes 30 at its four corners for connecting to a guide plate 15 via a guide rod 18. Two housing supports 29 are installed on each side to fix the housing 12 to the mounting plate 9 and subsequently to the support frame 5. The outer housing 31 is also a hollow component connected to the lower cover 28, and contains a hollow inner housing 32. The top of the inner housing 32 is lower than the top of the outer housing 31, and the bottom is higher than the bottom of the outer housing 31, thus fixing the Hall effect circuit board 33 within the annular groove between the outer housing 31 and the inner housing 32. The upper cover 34 is installed on the top of the outer housing 31 using a cross-screw 36, and two glands 35 are installed on one side to lock the housing 12 and shield it from external electromagnetic interference.

[0042] like Figure 7 As shown, the driver 13 includes a rotor 37, a stator 38, a brake 39, and an encoder 40.

[0043] Specifically, such as Figure 8 and Figure 9As shown, the rotor 37 includes a shaft 41, a rotor core 42, a rotor connector 43, magnets 44, a tape 45, a rotor bearing 46, a lead screw nut 47, and a lead screw 48. The shaft 41 is a hollow section with a cylindrical gear 49 fixed to its top, extending into the inner housing 32. A rotor bearing 46 is mounted on its outer side, located at the bottom of the cylindrical gear, at the top of the rotor core 42, and connected to the inner housing 32. The rotor core 42 is fixed to the shaft 41 via the rotor connector 43 at its top, and is surrounded by magnets 44 with alternating N and S poles, secured by the tape 45. The lead screw nut 47 is a hollow component, fixed to the bottom of the shaft 41 by the lead screw 48, used to connect the ball screw 17 and the outer guide bearing 21, thereby connecting the rotor 37 to the guide 11.

[0044] like Figure 7 and Figure 10 As shown, the stator 38 includes a stator core 50, insulating sheets 51, a winding coil 52, and slot wedges 53. The stator core 50 is a hollow component with multiple convex poles. Its outer side is fitted to the inner side of the outer casing 31, and insulating sheets 51 are installed on its upper and lower surfaces. These insulating sheets are located at the same horizontal position outside the rotor core 42 and do not contact the magnets 44. The winding coil 52 is installed around the convex poles of the stator core 50. It is used to generate a spatiotemporally distributed rotating magnetic field in the slots of the stator core 50 by passing multiphase alternating current through it, thereby interacting with the magnetic field of the rotor 37 to drive the rotor 37 to rotate. The slot wedges 53 are fixed to the slots of the stator core 50 to firmly press the winding coil 52 into the slots of the stator core 50, preventing coil displacement due to electromagnetic force or centrifugal force and reducing insulation wear.

[0045] like Figure 7 and Figure 11 As shown, the brake 39 includes a brake element 54, a first brake bearing 55, a second brake bearing 56, a shaft retaining ring 57, a stainless steel washer 58, a brake base 59, and a brake connector 60. The brake element 54 is a hollow component with a gear-shaped inner side and an annular top, used to engage with a cylindrical gear 49 to achieve synchronous rotation and stopping with the rotor 37. The first brake bearing 55 is fixed to the outside of the brake element 54, serving as a connection between the brake element 54 and the brake base. The second brake bearing 56 is fixed to the outside of the brake element 54 and located at the bottom end of the first brake bearing 55, used to connect with the inner housing 32. The shaft retaining ring 57 connects the first brake bearing 55 and the second brake bearing 56, and stainless steel washers 58 are fixed to both its upper and lower surfaces. The brake base 59 is connected to the brake element 54 via the brake connector 60 and a Phillips head countersunk screw 61.

[0046] like Figure 7 and Figure 12As shown, the encoder 40 includes a fixing plate 62, a positioning plate 63, an inner cover 64, and hexagonal studs 65. The fixing plate 62 is mounted on the top of the cylindrical gear 49 and located inside the brake component 54. Its marking holes are aligned with the magnetic pole phase of the rotor 37 to ensure that the encoder 40's zero-position signal is synchronized with the actual position of the rotor 37. The positioning plate 63 is mounted at the top of the inner side of the outer casing 31, with a height greater than the fixing plate 62 and smaller than the upper cover 34. The inner cover 64 is mounted in a recess at its bottom, and hexagonal studs 65 are installed at its four corners for connection to the brake base 59 and the inner casing 32.

[0047] Specifically, in this invention, the actuator body 1 and the power supply box 2 are installed separately. Since the actuator body 1 directly drives the movable plate 4 to achieve airflow control, it is installed at the vehicle's air inlet and outlet positions, for example, near the vehicle's air intake manifold or at the intercooler outlet. The power supply box 2 supplies power to the actuator body 1 and is installed in the vehicle's electrical cabinet or equipment compartment, integrated with other vehicle power systems for easy electrical connection. It is connected to the actuator body 1 via waterproof, insulated cables and sealed connectors.

[0048] The working principle is as follows: In this embodiment, the movement of the actuator body 1 is controlled by an electrical signal. In the default state, the actuator body 1 is not working, the driver 13 is not powered, and the brake 39 is locked. When the damper actuator start signal is received, the required adjustment angle of rotor 37 is first calculated based on the target air intake volume. The driver 13 is energized, the brake 39 is unlocked, and the Hall circuit board 33 detects the initial position of rotor 37 and records it by encoder 40. Then, the winding coil 52 of stator 38 is energized to drive the rotor shaft 41 of rotor 37 to rotate, which in turn drives the lead screw nut 47 to rotate. At this time, the ball screw 17 rotates synchronously and moves vertically up and down under the action of the lead screw nut 47, thereby driving the guide rod 18 to move vertically up and down, thus controlling the up and down movement of the movable plate 4 connected to the guide 11. At the same time, the Hall circuit board 33 monitors the position of rotor 37 based on the change of the magnetic poles of rotor 37, and the encoder 40 accurately measures the rotation angle of rotor 37 and provides real-time feedback on the position of rotor 37. When the difference between the position fed back by encoder 40 and the target position is less than the tolerance threshold, a damper actuator stop signal is received, the driver 13 is de-energized, the brake 39 is locked, and the brake 54 locks the cylindrical gear 49, thereby stopping rotor 37. At this time, the movable plate 4 moves to the position corresponding to the target air intake volume. In particular, when the movable plate 4 moves downward to the fully enclosed base plate 3, the guide rod silencing pad 26 contacts the lower shell cover 28, which plays a role in buffering and noise reduction; when the movable plate 4 moves upward to the maximum limit distance, the limit step 24 contacts the guide plate silencing pad 23, which also plays a role in buffering and noise reduction; the tolerance threshold between the real-time position of the rotor 37 and the target position of the rotor 37 is set manually according to the actual positioning of the movable plate 4, and can be adjusted each time the damper actuator is started. Performing this step can effectively control the error caused by factors such as signal transmission delay and rotor 37 rotational inertia, which cause the movable plate 4 to not stop moving immediately when the driver 13 is powered off.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vehicle pressure wave split-type damper actuator, comprising an actuator body (1) and a power supply box (2), characterized in that, The actuator body (1) includes a base plate (3), a movable plate (4), a support frame (5), support rods (6), an outer guide rod (7), a flat piece (8), a mounting plate (9), a reinforcing plate (10), a guide (11), a cover (12), and a driver (13). The base plate (3) and the support frame (5) are connected by support rods (6). There are four support rods (6) in total, which are symmetrically installed on both sides of the base plate (3) and fixed to the support frame (5) by hexagonal nuts (14) at the top. The movable plate (4) has openings on both sides through which the support rods pass. The rod (6) and the outer guide rod (7) are arranged in two, and are symmetrically installed in the middle of the support rod (6) on each side of the base plate (3) and fixed to the movable plate (4) by the flat piece (8). The mounting plate (9) and the reinforcing plate (10) are arranged in two, and are symmetrically installed at intervals at the bottom of the support frame (5). The guide (11) is connected to the upper end face of the movable plate (4). The cover (12) is fixed to the support frame (5) by the mounting plate (9). The driver (13) is located inside the cover (12) and is connected to the guide (11).

2. The vehicle pressure wave split-type damper actuator according to claim 1, characterized in that, The guide (11) includes a guide plate (15), a guide base (16), a ball screw (17), a guide rod (18), a waterproof cover (19), and a sealing ring (66). The guide plate (15) includes a guide piece (20), a guide bearing (21), a guide through hole (22), and a guide plate sound-absorbing pad (23). The guide piece (20) is a hollow component. The guide bearing (21) is installed in the hollow position of the guide piece (20). There are four guide through holes (22), which are located at the four corners of the guide piece (20). There are four guide plate sound-absorbing pads (23), which are installed on the lower end face of each guide through hole (22). The base (16) is connected to the movable plate (4). The ball screw (17) is fixed at the center of the guide base (16) and passes upward through the guide plate (15). There are four guide rods (18), which are fixed at the four corners of the guide base (16). The bottom end of the guide rod is equipped with a limiting step (24), and the top end is equipped with a guide washer (25) and a guide rod silent pad (26) and is fixed by a flange nut (27). The guide rod passes upward through the guide through hole (22). The lower end of the waterproof cover (19) is connected to the guide base (16) and the upper end is connected to the guide plate (15). The sealing ring (66) is installed on the outside of the annular groove at the top of the guide plate (15).

3. The vehicle pressure wave split-type damper actuator according to claim 1, characterized in that, The housing (12) includes a lower cover (28), a housing support (29), a lower cover through hole (30), an outer shell (31), an inner shell (32), a Hall circuit board (33), an upper cover (34), and a gland (35). The lower cover (28) is a hollow component and its bottom end is connected to the guide plate (15). There are four housing supports (29), which are symmetrically fixed on both sides of the lower cover (28) and connected to the mounting plate (9). There are four lower cover through holes (30), which are located at the four corners of the lower cover (28), respectively aligned with the four guide through holes (22), and their top ends are... The outer shell (31) is a hollow component and is connected to the lower shell cover (28). The inner shell (32) is a hollow component and is fixed inside the outer shell (31). Its top end is lower than the top end of the outer shell (31) and its bottom end is higher than the bottom end of the outer shell (31). The Hall circuit board (33) is fixed in the annular groove between the outer shell (31) and the inner shell (32). The upper shell cover (34) is fixed to the top end of the outer shell (31) by a cross-slot screw (36). There are two gland heads (35), both of which are fixed to one side of the upper end of the outer shell (31).

4. A vehicle pressure wave split-type damper actuator according to claim 1, characterized in that, The driver (13) includes a rotor (37), a stator (38), a brake (39), and an encoder (40). The rotor (37) includes a shaft (41), a rotor core (42), a rotor connector (43), a magnet (44), a belt (45), a rotor bearing (46), a lead screw nut (47), and a lead screw screw (48). The shaft (41) is a hollow part with a cylindrical gear (49) fixed at the top and extends into the inner housing (32). The rotor core (42) is connected to the rotor connector at the top. (43) Fixed to the outside of the rotating shaft (41), the magnet (44) surrounds the rotor core (42) and is fixed to the rotor core (42) by tape (45), the rotor bearing (46) is fixed to the outside of the rotating shaft (41) and connected to the inner housing (32), located at the bottom of the cylindrical gear (49) and the top of the rotor core (42), the lead screw nut (47) is a hollow part, fixed to the bottom of the rotating shaft (41) by lead screw (48) and connected to the ball screw (17), and connected to the guide bearing (21) on the outside.

5. A vehicle pressure wave split-type damper actuator according to claim 4, characterized in that, The stator (38) is installed at the bottom of the housing (12) and is lower than the Hall circuit board (33). It includes a stator core (50), insulating sheets (51), a winding coil (52), and a slot wedge (53). The stator core (50) is a hollow component with multiple convex poles. Its outer side is attached to the inner side of the outer housing (31). It is located at the same horizontal position outside the rotor core (42) and does not contact the magnet (44). The insulating sheets (51) are fixed to the upper and lower surfaces of the stator core (50). The winding coil (52) is installed around the convex poles of the stator core (50). The slot wedge (53) is fixed to the slot of the stator core and presses the winding coil (52) tightly.

6. A vehicle pressure wave split-type damper actuator according to claim 4 or 5, characterized in that, The brake (39) is located at the top inner side of the outer casing (31) and includes a brake element (54), a first brake bearing (55), a second brake bearing (56), a shaft retaining ring (57), a stainless steel washer (58), a brake base (59), and a brake connector (60). The brake element (54) is a hollow component with a gear-shaped inner side and an annular top, which is fitted with a cylindrical gear (49). The first brake bearing (55) is fixed to the outside of the brake element (54). The second brake bearing (56) is fixed to the outside of the brake component (54) and located at the bottom of the first brake bearing (55) and connected to the inner housing (32). The shaft retainer (57) is installed between the first brake bearing (55) and the second brake bearing (56) and stainless steel washers (58) are fixed on both the upper and lower surfaces. The brake base (59) is connected to the brake component (54) through the brake connector (60) and the cross-slot countersunk screw (61) and fixed to the outside of the first brake bearing (55).

7. A vehicle pressure wave split-type damper actuator according to claim 4 or 5, characterized in that, The encoder (40) includes a fixing plate (62), a positioning plate (63), an inner cover (64), and a hexagonal stud (65). The fixing plate (62) is installed on the top of the cylindrical gear (49) and located inside the brake (54). The inner cover (64) is fixed in the circular groove at the bottom of the positioning plate (63). The positioning plate (63) is located at the top of the inner side of the outer shell (31), with a height greater than the fixing plate (62) and less than the upper cover (34). It is connected to the brake base (59) and the inner shell (32) from top to bottom through the hexagonal stud (65).

8. A vehicle pressure wave split-type damper actuator according to claim 1, characterized in that, The actuator body (1) and the power supply box (2) are installed separately. The actuator body (1) is installed at the air inlet and outlet of the vehicle. The power supply box (2) is integrated with other power systems of the vehicle and installed in the vehicle power equipment compartment. It is connected to the actuator body (1) through cables and sealed connectors.

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