Electromagnetic active damper

Abstract

The application relates to an electromagnetic active damper, which comprises a first connecting cylinder, a blocking plate, a piston and an electromagnetic coil, the first connecting cylinder is provided with a chamber, at least a part of the chamber is used for placing electromagnetic variable liquid, one end of the first connecting cylinder in the axial direction is provided with a liquid replacement flow channel, the blocking plate is rotatably arranged on the first connecting cylinder between a closed position capable of separating the liquid replacement flow channel into two sections to form a flow cut-off and an open position capable of making the liquid replacement flow channel flow, the thickness direction of the blocking plate is parallel to the axial direction of the first connecting cylinder, the piston is slidably arranged in the chamber along the axial direction of the first connecting cylinder, and the electromagnetic coil is arranged on the piston. The electromagnetic active damper of the application can avoid leakage of the electromagnetic variable liquid by closing the liquid replacement flow channel through the blocking plate, has good closing effect, and meanwhile, the liquid replacement flow channel and the blocking plate are arranged, so that the electromagnetic variable liquid can flow conveniently, and the convenience of electromagnetic variable liquid replacement is improved.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic vibration reduction technology, and in particular to an electromagnetic active vibration damper. Background Technology

[0002] Electromagnetic active dampers are vibration damping devices that utilize electromagnetic reactions and are applied to new intelligent independent suspensions in automobiles. They can resolve the contradiction between comfort and sportiness. However, most electromagnetic active dampers still have some shortcomings: they are inconvenient to maintain, inconvenient to replace the electromagnetic fluid, and have poor damping effect. Summary of the Invention

[0003] This invention aims to at least partially address one of the technical problems in related technologies. To this end, embodiments of this invention propose an electromagnetic active vibration damper that improves the ease of replacing electromagnetic variable fluid.

[0004] The electromagnetic active vibration damper of this invention includes:

[0005] A first connecting cylinder has a chamber, at least a portion of which is used to hold an electromagnetic fluid. One end of the first connecting cylinder in the axial direction is provided with a fluid exchange channel, one end of which communicates with the chamber in the extending direction, and the other end of which is open in the extending direction.

[0006] A baffle plate is movably disposed on the first connecting cylinder between a closed position that divides the fluid exchange channel into two sections to form a flow interruption and an open position that allows the fluid exchange channel to flow. The thickness direction of the baffle plate is parallel to the axial direction of the first connecting cylinder.

[0007] A piston, slidably disposed in the chamber along the axial direction of the first connecting cylinder; and

[0008] An electromagnetic coil is mounted on the piston.

[0009] The electromagnetic active vibration damper of this invention seals the fluid exchange channel with a baffle plate, which can prevent leakage of the electromagnetic variable fluid and has a good sealing effect. At the same time, the fluid exchange channel and the baffle plate also facilitate the flow of the electromagnetic variable fluid, thereby improving the convenience of replacing the electromagnetic variable fluid.

[0010] In some embodiments, one end of the first connecting cylinder is provided with a first mounting cavity, the first mounting cavity including a first cavity and a second cavity that are interconnected, the second cavity being connected to the fluid exchange channel;

[0011] The electromagnetic active vibration damper further includes:

[0012] A drive assembly includes a drive member, a turntable, and a connecting rod. The drive member is located at one end of the first connecting cylinder, and the power output shaft of the drive member is located within the first cavity. The turntable is located on the power output shaft of the drive member. One end of the connecting rod is rotatably mounted on the turntable and is eccentrically positioned. The other end of the connecting rod is rotatably mounted on one side of the baffle plate. At least a portion of the baffle plate is located within the second cavity.

[0013] In some embodiments, a valve is provided on the fluid exchange channel, the valve being adjacent to the other end of the fluid exchange channel.

[0014] In some embodiments, the electromagnetic active vibration damper further includes:

[0015] A first elastic element is sleeved on the first connecting cylinder, and one end of the first elastic element is connected to the end of the first connecting cylinder in its axial direction.

[0016] The second connecting cylinder is slidably sleeved on the first connecting cylinder along the axial direction of the first connecting cylinder, and one end of the second connecting cylinder is connected to the other end of the first elastic member;

[0017] A connecting seat is detachably disposed at the other end of the second connecting cylinder, and the connecting seat is connected to the piston.

[0018] In some embodiments, a limiting hole is provided on the inner wall surface of the other end of the second connecting cylinder;

[0019] The connecting seat is provided with a second mounting cavity, a communicating hole and a threaded hole. Each of the communicating hole and the threaded hole communicates with the second mounting cavity. The communicating hole is opposite to the limiting hole. The threaded hole is spaced apart from the second connecting cylinder in the axial direction of the first connecting cylinder.

[0020] The electromagnetic active vibration damper further includes a locking assembly, which includes a movable rod, a threaded rod, a moving block, and a locking block. The movable rod is rotatably disposed in the second mounting cavity. The threaded rod is connected to the threaded hole. One end of the threaded rod is located in the second mounting cavity and is rotatably connected to the moving block. The moving block is connected to one end of the movable rod through a first connector. The locking block is connected to the other end of the movable rod through a second connector. The locking block cooperates with the limiting hole.

[0021] In some embodiments, the movable rod has a third cavity and a fourth cavity at both ends in its extension direction, respectively.

[0022] One end of the first connector is rotatably connected to the movable block, and the other end of the first connector is slidably disposed in the third cavity along the extension direction of the movable rod.

[0023] One end of the second connector is rotatably connected to the locking block, and the other end of the second connector is slidably disposed in the fourth cavity along the extension direction of the movable rod.

[0024] In some embodiments, the locking assembly further includes a second elastic member located within the fourth cavity, one end of the second elastic member being connected to the other end of the second connector, and the other end of the second elastic member being connected to the inner wall surface of the fourth cavity.

[0025] In some embodiments, the other end of the second connecting cylinder is provided with a positioning protrusion, and the connecting seat is provided with a positioning groove, the positioning groove cooperating with the positioning protrusion; optionally, the positioning protrusion is an arc-shaped block.

[0026] In some embodiments, the connecting seat has a groove on its side facing the first connecting cylinder, the piston has a connecting rod, the end of the connecting rod is disposed in the groove, the end of the connecting rod has a driver, and the driver is connected to the electromagnetic coil.

[0027] In some embodiments, the connecting rod is provided with a sealing plate, which is a circular plate that matches the chamber. A sealing strip is provided on the circumferential surface of the sealing plate, and the sealing strip abuts against the inner wall of the chamber. Attached Figure Description

[0028] Figure 1 This is one of the structural schematic diagrams of the electromagnetic active vibration damper according to an embodiment of the present invention;

[0029] Figure 2 This is the second schematic diagram of the electromagnetic active vibration damper according to an embodiment of the present invention;

[0030] Figure 3 yes Figure 1 A magnified view of a portion of point A in the middle;

[0031] Figure 4 This is a schematic diagram of the structure of the blocking plate, turntable, and connecting rod according to an embodiment of the present invention;

[0032] Figure 5 yes Figure 1 A magnified view of a portion of point B in the middle;

[0033] Figure label:

[0034] Electromagnetic active vibration damper 100;

[0035] First connecting cylinder 1, liquid exchange channel 11, valve 111, first mounting cavity 12, first cavity 121, second cavity 122, mounting base 13, liquid inlet 14, sealing cover 15, first slide groove 16, second slider 17;

[0036] Second connecting cylinder 2, limiting hole 21, positioning protrusion 22, first slider 23;

[0037] Piston 3, connecting rod 31, second slide groove 311, sealing plate 32, sealing strip 321;

[0038] Electromagnetic coil 4, blocking plate 5, driving assembly 6, driving component 61, turntable 62, connecting rod 63, first elastic component 7;

[0039] Connecting seat 8, second mounting cavity 81, connecting hole 82, threaded hole 83, groove 84; locking assembly 9, movable rod 91, third cavity 911, fourth cavity 912, threaded rod 92, moving block 93, locking block 94, first connecting piece 95, second connecting piece 96, second elastic member 97;

[0040] Drive 10. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] like Figures 1 to 5 As shown, an electromagnetic active vibration damper 100 according to an embodiment of the present invention includes a first connecting cylinder 1, a baffle plate 5, a piston 3 and an electromagnetic coil 4.

[0043] The first connecting cylinder 1 has a chamber, at least a portion of which is used to hold the electromagnetic fluid, and the first connecting cylinder 1 in its axial direction (e.g. Figure 1 One end of the fluid exchange channel 11 is provided in the vertical direction of the chamber. One end of the fluid exchange channel 11 is connected to the chamber in the extension direction, and the other end of the fluid exchange channel 11 is open in the extension direction.

[0044] The baffle plate 5 is movably disposed on the first connecting cylinder 1 between a closed position that divides the fluid exchange channel 11 into two sections to form a flow interruption and an open position that allows the fluid exchange channel 11 to flow. That is, when the baffle plate 5 is in the closed position, the fluid exchange channel 11 is closed, and the electromagnetic flux in that chamber of the first connecting cylinder 1 cannot flow out through the fluid exchange channel 11; when the baffle plate 5 is in the open position, the fluid exchange channel 11 is open, and the electromagnetic flux in that chamber of the first connecting cylinder 1 can flow out through the fluid exchange channel 11. The thickness direction of the baffle plate 5 is parallel to the axial direction of the first connecting cylinder 1, and the baffle plate 5 is a flat plate.

[0045] The piston 3 is slidably disposed in the chamber along the axial direction of the first connecting cylinder 1.

[0046] The electromagnetic coil 4 is mounted on the piston 3.

[0047] In the first connecting cylinder 1 of the electromagnetic active vibration damper 100 of this embodiment, an electromagnetic variable fluid is placed in the chamber. The electromagnetic variable fluid is located in the space between the bottom wall, side wall and piston 3 of the chamber. When the electromagnetic coil 4 is energized, it forms a magnetic field. The magnetic field changes the particle arrangement of the electromagnetic variable fluid, thereby increasing the resistance to the movement of the piston 3, that is, increasing the damping force and achieving the purpose of vibration reduction.

[0048] In the operational state, the electromagnetic active vibration damper 100 of this embodiment has the baffle plate 5 in its closed position. Since the thickness direction of the baffle plate 5 is parallel to the axial direction of the first connecting cylinder 1, the baffle plate 5 contacts the electrorheological fluid with its planar end face on the fluid exchange channel 11, thereby preventing the electrorheological fluid from flowing out of the fluid exchange channel 11. Within the fluid exchange channel 11, the baffle plate 5 provides good blocking effect against the electrorheological fluid, effectively preventing leakage.

[0049] When the electromagnetic fluid needs to be replaced, move the baffle plate 5 to the open position, and the fluid replacement channel 11 will be open, allowing the electromagnetic fluid to flow out through the fluid replacement channel 11.

[0050] The electromagnetic active vibration damper 100 of this invention seals the fluid exchange channel 11 with the baffle plate 5, which can prevent leakage of the electromagnetic fluid and has a good sealing effect. At the same time, the fluid exchange channel 11 and the baffle plate 5 facilitate the flow of the electromagnetic fluid, thereby improving the convenience of replacing the electromagnetic fluid.

[0051] Specifically, see Figures 1 to 5 As shown, the electromagnetic active vibration damper 100 of this embodiment includes a first connecting cylinder 1, a baffle plate 5, a piston 3, an electromagnetic coil 4, a drive assembly 6, a first elastic element 7, a second connecting cylinder 2, a connecting seat 8, and a locking assembly 9. Figure 1 In the middle, the vertical direction is the same as the axial direction of the first connecting cylinder 1.

[0052] The first connecting cylinder 1 has a chamber, at least a portion of which is used to hold the electromagnetic fluid. The first connecting cylinder 1 has a fluid exchange channel 11 at its lower end in the axial direction, the fluid exchange channel 11 communicates with the chamber at its upper end in the extending direction, and the lower end of the fluid exchange channel 11 in the extending direction is open.

[0053] The piston 3 is slidably disposed in the chamber along the axial direction of the first connecting cylinder 1. For example... Figure 1As shown, the space between the lower end face of the piston 3 and the bottom and side walls of the chamber of the first connecting cylinder 1 is filled with electromagnetic fluid.

[0054] The electromagnetic coil 4 is mounted on the piston 3.

[0055] The bottom of the first connecting cylinder 1 is provided with a mounting base 13, through which the electromagnetic active vibration damper 100 can be installed in the application environment to complete the installation of the lower end of the electromagnetic active vibration damper 100.

[0056] In some embodiments, a first mounting cavity 12 is provided at one end of the first connecting cylinder 1. The first mounting cavity 12 includes a first cavity 121 and a second cavity 122 that are interconnected. The second cavity 122 is connected to the fluid exchange channel 11. The drive assembly 6 includes a drive member 61, a turntable 62, and a connecting rod 63. The drive member 61 is located at one end of the first connecting cylinder 1. The power output shaft of the drive member 61 is located inside the first cavity 121. The turntable 62 is located on the power output shaft of the drive member 61. One end of the connecting rod 63 is rotatably located on the turntable 62 and is eccentrically positioned. The other end of the connecting rod 63 is rotatably located on one side of the baffle plate 5. At least a portion of the baffle plate 5 is located inside the second cavity 122. The bottom wall and the top wall of the second cavity 122 abut against the baffle plate 5. That is, the bottom wall and the top wall of the second cavity 122 limit the vertical movement of the baffle plate 5, and the bottom wall of the second cavity 122 provides support for the baffle plate 5.

[0057] When the position of the baffle plate 5 needs to be switched, the drive component 61 drives the turntable 62 to rotate, which in turn drives the connecting rod 63 to deflect, thereby moving the baffle plate 5 to switch between the closed position and the open position. The drive component 6 has a simple structure and the movement of the baffle plate 5 is simple, which makes it easy to adjust the flow and closure of the fluid exchange channel 11, thereby improving the convenience of replacing the electromagnetic fluid in this chamber of the first connecting cylinder 1.

[0058] Specifically, the drive component 61 is a motor.

[0059] Furthermore, a valve 111 is provided on the fluid exchange channel 11, and the valve 111 is located near the other end of the fluid exchange channel 11. (See reference...) Figure 1 As shown, valve 111 is located below baffle plate 5. When baffle plate 5 fails, valve 111 can be used as an emergency valve to prevent the electromagnetic fluid from flowing out of fluid exchange channel 11 for a short time.

[0060] Optionally, the side wall of the first connecting cylinder 1 is provided with a liquid inlet hole 14, and a sealing cap 15 is provided on the liquid inlet hole 14. After the electrorheological fluid flows out of the chamber of the first connecting cylinder 1 through the liquid exchange channel 11, the drive assembly 6 drives the baffle plate 5 to move the baffle plate 5 to the closed position to close the liquid exchange channel 11. At this time, the sealing cap 15 can be opened, and the piston 3 can be pulled upward so that the liquid inlet hole 14 is located between the piston 3 and the bottom wall surface of the chamber of the first connecting cylinder 1. Then, the electrorheological fluid can be introduced into the chamber of the first connecting cylinder 1 through the liquid inlet hole 14 to complete the injection of the electrorheological fluid.

[0061] A first elastic element 7 is sleeved on the first connecting cylinder 1, with one end of the first elastic element 7 connected to one end of the first connecting cylinder 1 in its axial direction. A second connecting cylinder 2 is slidably sleeved on the first connecting cylinder 1 along its axial direction, with one end of the second connecting cylinder 2 connected to the other end of the first elastic element 7. A connecting seat 8 is detachably disposed at the other end of the second connecting cylinder 2, and the connecting seat 8 is connected to the piston 3.

[0062] The electromagnetic active vibration damper 100 can be installed in the application environment via the connecting seat 8 to complete the installation of the upper position of the electromagnetic active vibration damper 100.

[0063] When the electromagnetic active vibration damper 100 is subjected to vibration impact, the connecting seat 8 moves downward, thereby driving the piston 3 and the second connecting cylinder 2 to move downward. The damping force of the piston 3 is applied by the electromagnetic fluid to reduce vibration. In addition, the first elastic element 7 is compressed when the second connecting cylinder 2 moves downward, and the first elastic element 7 also plays an auxiliary role in vibration reduction, thereby improving the vibration reduction effect of the electromagnetic active vibration damper 100.

[0064] Specifically, the first elastic element 7 is the first spring.

[0065] Furthermore, the second connecting cylinder 2 is slidably sleeved on the first connecting cylinder 1 along the axial direction of the first connecting cylinder 1. The first connecting cylinder 1 also guides the up-and-down movement of the piston 3 and the second connecting cylinder 2, so as to ensure the smoothness and safety of the piston 3 and the second connecting cylinder 2 when they move up and down.

[0066] Optionally, the outer wall of the first connecting cylinder 1 is provided with a first sliding groove 16, which extends along the axial direction of the first connecting cylinder 1. The inner wall of the second connecting cylinder 2 is provided with a first slider 23, which cooperates with the first sliding groove 16. The first slider 23 is located in the first sliding groove 16. When the second connecting cylinder 2 slides up and down relative to the first connecting cylinder 1, it can guide the sliding of the second connecting cylinder 2, further ensuring the smoothness and safety of the up and down movement of the second connecting cylinder 2.

[0067] The connecting seat 8 has a groove 84 on its side facing the first connecting cylinder 1. The piston 3 has a connecting rod 31, the end of which is located in the groove 84. The end of the connecting rod 31 has a driver 10, which is connected to the electromagnetic coil 4. The driver 10 emits a pulse signal, which causes the connected electromagnetic coil 4 to generate a voltage and form a magnetic field.

[0068] The actuator 10 is mounted on the connecting rod 31, meaning the only structure between the actuator 10 and the electromagnetic coil 4 is the connecting rod 31 and the piston 3. This makes installation and connection between the actuator 10 and the electromagnetic coil 4 more convenient. Furthermore, the actuator 10 is located within the groove 84, which not only limits the position of the connecting rod 31 and the connecting seat 8, preventing axial displacement, but also facilitates the disengagement of the connecting seat 8 from the actuator 10 and the connecting rod 31, as there are no other structures between the actuator 10 and the connecting seat 8. Under the downward impact of the connecting seat 8, the actuator 10 emits a pulse signal to generate a magnetic field in the electromagnetic coil, increasing the electromagnetic damping.

[0069] Optionally, the connecting rod 31 is provided with a second sliding groove 311, and the first connecting cylinder 1 is provided with a second slider 17, the end of which is located within the second sliding groove 311. The cooperation between the second sliding groove 311 and the second slider 17 can improve the smoothness and safety of the up-and-down movement of the connecting rod 31 and the piston 3.

[0070] In some embodiments, the connecting rod 31 is provided with a sealing plate 32, which is a circular plate that matches the chamber. A sealing strip 321 is provided on the circumferential surface of the sealing plate 32, and the sealing strip 321 abuts against the inner wall surface of the chamber. The sealing plate 32 and the sealing strip 321 form a seal on the upper part of the first connecting cylinder 1, increasing the sealing performance of the piston 3 relative to the first connecting cylinder 1.

[0071] In some embodiments, a limiting hole 21 is provided on the inner wall surface of the other end of the second connecting cylinder 2. The connecting seat 8 is provided with a second mounting cavity 81, a communicating hole 82, and a threaded hole 83. Each of the communicating hole 82 and the threaded hole 83 communicates with the second mounting cavity 81. The communicating hole 82 is opposite to the limiting hole 21, and the threaded hole 83 is axially spaced from the second connecting cylinder 2 by the first connecting cylinder 1. The locking assembly 9 includes a movable rod 91, a threaded rod 92, a moving block 93, and a locking block 94. The movable rod 91 is rotatably disposed in the second mounting cavity 81. The threaded rod 92 is connected to the threaded hole 83. One end of the threaded rod 92 is located in the second mounting cavity 81 and is rotatably connected to the moving block 93. The moving block 93 is connected to one end of the movable rod 91 through a first connecting member 95. The locking block 94 is connected to the other end of the movable rod 91 through a second connecting member 96. The locking block 94 cooperates with the limiting hole 21.

[0072] Under normal conditions, at least a portion of the locking block 94 is located within the limiting hole 21. The locking block 94 can limit the connecting seat 8 in the axial and circumferential directions of the first connecting cylinder 1, so that the connecting seat 8 and the second connecting cylinder 2 are in a fixed relationship. That is, under normal conditions, the connecting seat 8 and the second connecting cylinder 2 move synchronously.

[0073] See Figure 5 As shown, when it is necessary to maintain the interior of the electromagnetic active vibration damper 100, the threaded rod 92 can be rotated to move the threaded rod 92 outward from the second mounting cavity 81 (that is... Figure 5 The piston 3 moves to the left side of the first connecting cylinder 1, thereby causing the moving block 93 to move to the left. Then, the moving block 93 drives the movable rod 91 to rotate counterclockwise through the first connecting member 95. The lower end of the movable rod 91 drives the locking block 94 to move to the right through the second connecting member 96, so that the locking block 94 is disengaged from the limiting hole 21, thereby releasing the locking block 94 from the limiting of the connecting seat 8. Then, the connecting seat 8 can be detached from the second connecting cylinder 2, exposing the piston 3. Then, the interior of the second connecting cylinder 2 and the upper part of the first connecting cylinder 1 can be maintained.

[0074] Optionally, the movable rod 91 has a third cavity 911 and a fourth cavity 912 at both ends in its extension direction. One end of the first connecting member 95 is rotatably connected to the moving block 93, and the other end of the first connecting member 95 is slidably disposed in the third cavity 911 along the extension direction of the movable rod 91. That is, when the movement of the moving block 93 causes the movable rod 91 to rotate counterclockwise, the upper end of the first connecting member 95 moves to the left with the moving block 93, and the lower end of the first connecting member 95 moves downward in the third cavity 911.

[0075] One end of the second connecting member 96 is rotatably connected to the locking block 94, and the other end of the second connecting member 96 is slidably disposed in the fourth cavity 912 along the extension direction of the movable rod 91. That is, when the movable rod 91 rotates counterclockwise and drives the locking block 94 to move to the right, the upper end of the second connecting member 96 moves upward in the fourth cavity 912, and the lower end of the second connecting member 96 drives the locking block 94 to move to the right.

[0076] The arrangement of the first connector 95, the third cavity 912, the second connector 96, and the fourth cavity 912 not only transmits motion for the rotational motion of the movable rod 91, but also has a simple structure, is easy to manufacture, and can reduce the manufacturing cost of the electromagnetic active vibration damper 100.

[0077] Optionally, the locking assembly 9 further includes a second elastic member 97 located within the fourth cavity 912. One end of the second elastic member 97 is connected to the other end of the second connector 96, and the other end of the second elastic member 97 is connected to the inner wall surface of the fourth cavity 912. The second elastic member 97 exerts a spring force on the second connector 96 in the direction toward the locking block 94. When the locking block 94 is located within the limiting hole 21, the radial component of this spring force points toward the second connecting cylinder 2, thereby improving the stability of the engagement between the locking block 94 and the limiting hole 21, preventing external vibrations from affecting the second connector 96 and the locking block 94, and thus improving the stability and safety of the connection between the connecting seat 8 and the second connecting cylinder 2.

[0078] Specifically, the second elastic element 97 is a second spring.

[0079] In some embodiments, the other end of the second connecting cylinder 2 is provided with a positioning protrusion 22, and the connecting seat 8 is provided with a positioning groove, which cooperates with the positioning protrusion 22. The positioning protrusion 22 and the positioning groove facilitate the positioning of the connecting seat 8 and the second connecting cylinder 2 during installation.

[0080] Optionally, the positioning bump 22 is an arc-shaped block. For example... Figure 2 As shown, the lower end of the connector 8 is provided with an arc-shaped chamfer. This chamfer connects with the positioning groove to form a wave shape, which can improve the convenience of installing the connector 8 to the second connector 2.

[0081] Specifically, the positioning protrusion 22 is a rubber block, and the connecting seat 8 is provided with a rubber bushing. The frictional resistance between the rubber block and the rubber bushing is large, which can improve the sealing performance and connection safety between the connecting seat 8 and the second connecting cylinder 2.

[0082] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this invention.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0086] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electromagnetic active vibration damper, characterized in that, include: A first connecting cylinder (1) has a chamber, at least a portion of which is used to place an electromagnetic fluid. The first connecting cylinder (1) has a fluid exchange channel (11) at one end in its axial direction. One end of the fluid exchange channel (11) is connected to the chamber in its extending direction, and the other end of the fluid exchange channel (11) is open in its extending direction. A baffle plate (5) is movably disposed on the first connecting cylinder (1) between a closed position that allows the fluid exchange channel (11) to be divided into two sections to form a flow interruption and an open position that allows the fluid exchange channel (11) to flow. The thickness direction of the baffle plate (5) is parallel to the axial direction of the first connecting cylinder (1). Piston (3), which is slidably disposed in the chamber along the axial direction of the first connecting cylinder (1); An electromagnetic coil (4) is mounted on the piston (3); The first elastic element (7) is sleeved on the first connecting cylinder (1), and one end of the first elastic element (7) is connected to the end of the first connecting cylinder (1) in its axial direction. The second connecting cylinder (2) is slidably sleeved on the first connecting cylinder (1) along the axial direction of the first connecting cylinder (1). One end of the second connecting cylinder (2) is connected to the other end of the first elastic member (7). A limiting hole (21) is provided on the inner wall surface of the other end of the second connecting cylinder (2). A connecting seat (8) is detachably disposed at the other end of the second connecting cylinder (2). The connecting seat (8) is connected to the piston (3). The connecting seat (8) is provided with a second mounting cavity (81), a communicating hole (82) and a threaded hole (83). Each of the communicating hole (82) and the threaded hole (83) communicates with the second mounting cavity (81). The communicating hole (82) is opposite to the limiting hole (21). The threaded hole (83) is spaced apart from the second connecting cylinder (2) in the axial direction of the first connecting cylinder (1). and A locking assembly (9) includes a movable rod (91), a threaded rod (92), a moving block (93), and a locking block (94). The movable rod (91) is rotatably disposed in the second mounting cavity (81). The threaded rod (92) is connected to the threaded hole (83). One end of the threaded rod (92) is located in the second mounting cavity (81) and rotatably connected to the moving block (93). The moving block (93) is connected to one end of the movable rod (91) through a first connector (95). The locking block (94) is connected to the other end of the movable rod (91) through a second connector (96). The block (94) cooperates with the limiting hole (21). The movable rod (91) has a third cavity (911) and a fourth cavity (912) at both ends in its extension direction. One end of the first connecting member (95) is rotatably connected to the movable block (93). The other end of the first connecting member (95) is slidably disposed in the third cavity (911) along the extension direction of the movable rod (91). One end of the second connecting member (96) is rotatably connected to the locking block (94). The other end of the second connecting member (96) is slidably disposed in the fourth cavity (912) along the extension direction of the movable rod (91).

2. The electromagnetic active vibration damper according to claim 1, characterized in that, The first connecting cylinder (1) has a first mounting cavity (12) at one end. The first mounting cavity (12) includes a first cavity (121) and a second cavity (122) that are interconnected. The second cavity (122) is connected to the liquid exchange channel (11). The electromagnetic active vibration damper further includes: The drive assembly (6) includes a drive member (61), a turntable (62) and a connecting rod (63). The drive member (61) is located at one end of the first connecting cylinder (1). The power output shaft of the drive member (61) is located in the first cavity (121). The turntable (62) is located on the power output shaft of the drive member (61). One end of the connecting rod (63) is rotatably located on the turntable (62) and is eccentrically arranged. The other end of the connecting rod (63) is rotatably located on one side of the baffle plate (5). At least a portion of the baffle plate (5) is located in the second cavity (122).

3. The electromagnetic active vibration damper according to claim 1, characterized in that, A valve (111) is provided on the fluid exchange channel (11), and the valve (111) is adjacent to the other end of the fluid exchange channel (11).

4. The electromagnetic active vibration damper according to claim 1, characterized in that, The locking component (9) further includes a second elastic element (97) located in the fourth cavity (912), one end of the second elastic element (97) being connected to the other end of the second connector (96), and the other end of the second elastic element (97) being connected to the inner wall surface of the fourth cavity (912).

5. The electromagnetic active vibration damper according to claim 1, characterized in that, The other end of the second connecting cylinder (2) is provided with a positioning protrusion (22), and the connecting seat (8) is provided with a positioning groove, which cooperates with the positioning protrusion (22); optionally, the positioning protrusion (22) is an arc-shaped block.

6. The electromagnetic active vibration damper according to claim 1, characterized in that, The connecting seat (8) has a groove (84) on its side facing the first connecting cylinder (1), the piston (3) has a connecting rod (31), the end of the connecting rod (31) is located in the groove (84), the end of the connecting rod (31) is provided with a driver (10), and the driver (10) is connected to the electromagnetic coil (4).

7. The electromagnetic active vibration damper according to claim 6, characterized in that, The connecting rod (31) is provided with a sealing plate (32), which is a circular plate that matches the chamber. A sealing strip (321) is provided on the circumferential surface of the sealing plate (32), and the sealing strip (321) abuts against the inner wall surface of the chamber.

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