Electromagnetic damping valve and shock absorber

Abstract

The utility model provides an electromagnetic damping valve and a shock absorber, which relate to the technical field of electromagnetic valves, and comprise a valve body assembly, a positioning assembly, a pushing assembly and a first elastic sheet, an oil inlet channel extending in the axial direction is formed in the valve body assembly, the positioning assembly comprises an adjusting block and a first gasket, one end of the adjusting block is connected with the valve body assembly, the other end of the adjusting block is connected with the first gasket, and an oil passing cavity is formed. A plurality of oil passing parts are formed on the first elastic piece, the oil passing parts are evenly distributed in the circumferential direction of the first elastic piece, the first elastic piece is divided into a movable part and a connecting part, and every two adjacent oil passing parts are partially corresponding in position and are arranged in the corresponding areas at intervals to form connecting rib parts; the connecting part is located on the outer ring of the first elastic piece and pressed by the adjusting block and the first gasket, a connecting hole is formed in the center of the movable part of the inner ring of the first elastic piece, and the movable end of the pushing assembly enters the oil passing cavity and penetrates through the connecting hole to be connected with the movable part.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an electromagnetic damping valve and a shock absorber. Background Technology

[0002] Shock absorbers are widely used to cushion the bumps and jolts generated when a vehicle goes over potholes. To simultaneously ensure vehicle stability and handling, existing shock absorbers require good adjustability. Therefore, pilot-operated relief valves are widely used in damping shock absorber designs. By controlling the opening of the main valve core, the damping of the shock absorber can be adjusted, allowing it to better adapt to different needs during vehicle operation.

[0003] In most existing electromagnetic damping valves for shock absorbers, a spring structure is used to achieve the return of the piston rod. However, the spring structure will have varying degrees of contact with the inner wall of the load-bearing structure. With the long-term use of the shock absorber, friction and jamming between the spring and the inner wall of the load-bearing structure are inevitable, affecting the smoothness of the adjustment process.

[0004] Therefore, there is an urgent need to provide an electromagnetic damping valve and shock absorber to solve the problems existing in the prior art to a certain extent. Utility Model Content

[0005] The purpose of this invention is to provide an electromagnetic damping valve and a shock absorber, so as to optimize the structure of the electromagnetic damping valve to a certain extent and improve the smoothness of the adjustment process.

[0006] This utility model provides an electromagnetic damping valve, including a valve body assembly, a positioning assembly, a pushing assembly, and a first spring plate. The valve body assembly forms an axially extending oil inlet channel. The positioning assembly includes an adjusting block and a first gasket. One end of the adjusting block is connected to the valve body assembly, and the other end is connected to the first gasket, forming an oil passage cavity. The first spring plate has multiple oil passage portions, which are evenly distributed along the circumference of the first spring plate, dividing the first spring plate into a movable portion and a connecting portion. Each pair of adjacent oil passage portions has a partial positional correspondence, and connecting ribs are formed at intervals in the corresponding areas. The connecting portion is located on the outer ring of the first spring plate and is pressed by the adjusting block and the first gasket. A connecting hole is formed at the center of the movable portion on the inner ring of the first spring plate. The movable end of the pushing assembly enters the oil passage cavity and passes through the connecting hole to connect with the movable portion.

[0007] The oil-passing section is multiple in number and arranged circumferentially along the first elastic piece. Each oil-passing section includes a first oil-passing segment, a connecting segment, and a second oil-passing segment. Both the first oil-passing segment and the second oil-passing segment extend circumferentially along the first elastic piece. The two ends of the connecting segment are respectively connected to the first oil-passing segment and the second oil-passing segment, and the connecting segment extends radially along the first elastic piece. The ends of the first oil-passing segments and the ends of the second oil-passing segments of adjacent oil-passing sections partially overlap radially to form the connecting rib.

[0008] Specifically, the electromagnetic damping valve provided by this utility model further includes a valve plate, which is located on the side of the first gasket away from the first spring plate and is connected to the first gasket. The valve plate forms an oil passage hole, and the movable end of the pushing component moves away from the oil passage hole to increase the opening of the oil passage hole.

[0009] Furthermore, the gasket has a through hole at its center, and the center of the through hole is collinear with the center of the connecting hole; there are multiple oil passage holes, which extend radially and are evenly distributed around the circumference of the through hole.

[0010] Furthermore, the pushing assembly includes a push rod and a piston head; the piston head includes a main body and a ring-shaped portion, one end of the push rod is connected to the main body, and the ring-shaped portion is formed on the outer wall of the main body along the circumference of the main body; one side of the ring-shaped portion is in contact with the first spring sheet, and the other side is in contact with the gasket.

[0011] The electromagnetic damping valve provided by this utility model further includes a moving iron core, a stationary iron core, and a bearing. The positioning assembly also includes a housing. The moving iron core is slidably connected to the housing, and the stationary iron core is fixedly connected to the housing. The bearing is located between the push rod and the stationary iron core. The inner ring of the bearing is connected to the push rod, and the outer ring is connected to the stationary iron core. The end of the push rod away from the piston head passes through the bearing and the stationary iron core and is connected to the moving iron core.

[0012] Specifically, the valve body assembly includes a valve port, a gasket, a valve core, a valve sleeve, a fixing sleeve, and an elastic element; the gasket is disposed between the valve port and the valve core to seal the gap between the valve port and the valve core; the valve sleeve is fitted over the valve core and the valve port, and a first oil outlet is formed on the valve sleeve, which is connected to the oil inlet channel; one end of the elastic element abuts against the valve sleeve, and the other end is connected to the valve core, pushing the valve core towards the valve port; the fixing sleeve is fitted over the valve sleeve and connected to the outer shell, and a second oil outlet is formed between the fixing sleeve and the adjusting block.

[0013] Furthermore, the fixing sleeve is cylindrical, and a plurality of axially extending expansion portions are formed in the circumferential direction of the fixing sleeve. The plurality of expansion portions are spaced apart and form a plurality of second oil outlets between them and the adjusting block.

[0014] Furthermore, the electromagnetic damping valve provided by this utility model also includes a second spring plate, which is located in the cavity formed between the valve core and the valve sleeve; the second spring plate includes a positioning part and a supporting part, the positioning part is embedded in the valve sleeve, and there are multiple supporting parts, which are evenly distributed around the positioning part and extend radially in a diffuse manner; the end of the supporting part away from the positioning part is in contact with the valve core and is used to support the valve core.

[0015] Compared with the prior art, the electromagnetic damping valve provided by this utility model has the following advantages:

[0016] The electromagnetic damping valve provided by this utility model includes a valve body assembly, a positioning assembly, a pushing assembly, and a first spring plate. The valve body assembly forms an axially extending oil inlet channel. The positioning assembly includes an adjusting block and a first gasket. One end of the adjusting block is connected to the valve body assembly, and the other end is connected to the first gasket to form an oil passage cavity. The first spring plate has multiple oil passages, which are evenly distributed along the circumference of the first spring plate, dividing the first spring plate into a movable part and a connecting part. Each pair of adjacent oil passages has a partial positional correspondence, and connecting ribs are formed at intervals in the corresponding areas. The connecting part is located on the outer ring of the first spring plate and is pressed by the adjusting block and the first gasket. A connecting hole is formed at the center of the movable part of the inner ring of the first spring plate. The movable end of the pushing assembly enters the oil passage cavity and passes through the connecting hole to connect with the movable part.

[0017] Analysis shows that the oil inlet channel formed by the valve body assembly enables the inflow of oil. One end of the adjusting block is connected to the valve body assembly, and the other end is connected to the first gasket, which forms an oil passage chamber. The oil passage chamber in this application is connected to the oil inlet channel, thereby enabling the oil to enter the oil passage chamber.

[0018] Since the positioning component in this application also includes a first gasket, and an oil-filled portion is formed on the first spring, the oil-filled portion can divide the first spring into a connecting portion located on the outer ring and a movable portion located on the inner ring, and there is a position-corresponding portion between two adjacent oil-filled portions, that is, a portion that overlaps in the radial direction of the first spring, and the overlapping portion can form a connecting rib portion, thereby enabling the movable portion to move relative to the connecting portion by means of the connecting rib portion.

[0019] Understandably, during actual assembly, the first gasket and the adjusting block press the connecting part together to achieve the positioning of the first spring piece. A connecting hole is also formed in the center of the movable part located in the inner ring. The movable end of the push assembly in this application can enter the oil passage and connect with the connecting hole, so that the movable end of the push assembly can connect with the movable part. In this way, when the movable end of the push assembly moves closer to the valve body assembly, it can drive the movable part to follow the movable end and lift up. The lifting range gradually decreases from the center outwards. At the same time, the connecting rib is subjected to tension and generates a restoring force.

[0020] Therefore, when the driving component loses its electromagnetic drive, the restoring force of the connecting rib can drive the driving component to reset. Since this application uses a first spring sheet instead of a traditional spring structure, and there is no contact between the first spring sheet and the inner wall of the adjusting block during movement, the adjustment process is smoother, and even after long-term use of the shock absorber, there will be no jamming problem.

[0021] In addition, this utility model also provides a shock absorber, including the electromagnetic damping valve mentioned above.

[0022] The shock absorber using the electromagnetic damping valve provided in this application can have a smoother adjustment process, thereby improving the overall smoothness of the shock absorber and enhancing the user experience. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A cross-sectional view of the electromagnetic damping valve structure provided in an embodiment of this utility model;

[0025] Figure 2 A schematic diagram of the structure of the first spring in the electromagnetic damping valve provided in this embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the gasket structure in the electromagnetic damping valve provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the fixed sleeve in the electromagnetic damping valve provided in an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the second spring in the electromagnetic damping valve provided in an embodiment of the present invention.

[0029] In the diagram: 1-Valve port; 2-Sealing plate; 3-Valve core; 4-Valve sleeve; 5-Fixing sleeve; 501-Expansion part; 502-Second oil outlet; 6-Outer shell; 7-Coil; 8-Elastic element; 9-Second spring; 901-Positioning part; 902-Supporting part; 10-Adjusting block; 11-First spring; 1101-Connecting hole; 1102-Moving part; 1103-Connecting rib; 1104-Oil passage part; 1105-Connecting part; 12-First oil outlet; 13-Valve plate; 1301-Through hole; 1302-Oil passage hole; 14-Piston head; 15-Push rod; 16-Bearing; 17-Static iron core; 18-Moving iron core. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing the utility model and simplifying the description, and do not 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 the utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0035] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device during use or operation.

[0036] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0037] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0038] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have various constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0039] like Figure 1As shown, this utility model provides an electromagnetic damping valve, including a valve body assembly, a positioning assembly, a pushing assembly, and a first spring plate 11. The valve body assembly forms an oil inlet channel extending axially. The positioning assembly includes an adjusting block 10 and a first gasket. One end of the adjusting block 10 is connected to the valve body assembly, and the other end is connected to the first gasket to form an oil passage cavity. The first spring plate 11 has a plurality of oil passage portions 1104, which are evenly distributed along the circumference of the first spring plate 11, dividing the first spring plate 11 into a movable portion 1102 and a connecting portion 1105. Each pair of adjacent oil passage portions 1104 have a partial positional correspondence, and connecting rib portions 1103 are formed at intervals in the corresponding areas. The connecting portion 1105 is located on the outer ring of the first spring plate 11 and is pressed by the adjusting block 10 and the first gasket. A connecting hole 1101 is formed in the center of the movable portion 1102 in the inner ring of the first spring plate 11. The movable end of the pushing assembly enters the oil passage cavity and passes through the connecting hole 1101 to connect with the movable portion 1102.

[0040] Compared with the prior art, the electromagnetic damping valve provided by this utility model has the following advantages:

[0041] The electromagnetic damping valve provided by this utility model can realize the inflow of oil through the oil inlet channel formed by the valve body assembly. One end of the adjusting block 10 is connected to the valve body assembly, and the other end is connected to the first gasket to form an oil passage chamber. The oil passage chamber in this application is connected to the oil inlet channel, so that oil can enter the oil passage chamber.

[0042] Since the positioning component in this application also includes a first gasket, and an oiled portion 1104 is formed on the first spring piece 11, the oiled portion 1104 can divide the first spring piece 11 into a connecting portion 1105 located on the outer ring and a movable portion 1102 located on the inner ring. There are corresponding portions between two adjacent oiled portions 1104, that is, portions that overlap in the radial direction of the first spring piece 11. The overlapping portions can form a connecting rib portion 1103, thereby enabling the movable portion 1102 to move relative to the connecting portion 1105 using the connecting rib portion 1103.

[0043] Understandably, during actual assembly, the first gasket and the adjusting block 10 press the connecting part 1105 together, thereby positioning the first spring piece 11. The center of the movable part 1102 located in the inner ring also has a connecting hole 1101. The movable end of the push assembly in this application can enter the oil passage and connect with the connecting hole 1101, so that the movable end of the push assembly can connect with the movable part 1102. In this way, when the movable end of the push assembly moves closer to the valve body assembly, it can drive the movable part 1102 to lift up with the movable end, and the lifting amplitude gradually decreases from the center outward. At the same time, the connecting rib 1103 is subjected to tension and generates a restoring force.

[0044] Therefore, when the drive component loses its electromagnetic drive, the restoring force of the connecting rib 1103 can drive the drive component to reset. Since this application uses the first spring piece 11 instead of the traditional spring structure, and there is no contact between it and the inner wall of the adjusting block 10 during movement, the adjustment process is smoother, and there will be no jamming problem even after long-term use of the shock absorber.

[0045] It should be further noted that, since the pressure or restoring force that the first spring 11 can apply to the pushing component in this application is mainly achieved through the connecting rib 1103, the overall solenoid valve's adjustment stiffness can be adjusted by changing the width of the connecting rib 1103 or adjusting the thickness of the first spring 11. Furthermore, because the size adjustment of the connecting rib 1103 can be more precise, it offers a higher degree of adaptability and higher adjustment accuracy compared to a spring structure, thereby improving the overall performance of the solenoid damping valve.

[0046] Optionally, such as Figure 2 As shown, the number of oil-passing sections 1104 in this application is multiple, and they are arranged along the circumference of the first spring piece 11. Each oil-passing section 1104 includes a first oil-passing segment, a connecting segment, and a second oil-passing segment. Both the first oil-passing segment and the second oil-passing segment extend along the circumference of the first spring piece 11. The two ends of the connecting segment are respectively connected to the first oil-passing segment and the second oil-passing segment, and the connecting segment extends radially along the first spring piece 11. The ends of the first oil-passing segments and the ends of the second oil-passing segments of adjacent oil-passing sections 1104 partially overlap radially to form a connecting rib 1103.

[0047] In this application, the number of oil-coated parts 1104 can be two or more, and the number can be designed according to specific stiffness requirements. Preferably, the number of oil-coated parts 1104 is four, which can be evenly formed on the first spring sheet 11, so that the force on the first spring sheet 11 is more uniform.

[0048] Accordingly, the oiling section 1104 in this application includes a first oiling segment, a connecting segment, and a second oiling segment. The connecting segment, extending radially, allows the first and second oiling segments to be radially separated, thus enabling the formation of four oiling sections 1104 within the limited circumferential space of the first spring sheet 11. Furthermore, by radially overlapping the ends of the first and second oiling segments of adjacent oiling sections 1104, the space occupied can be further reduced. Simultaneously, a connecting rib 1103 can be formed, allowing the inner ring movable section 1102 to rise following the movement of the movable end of the push assembly.

[0049] Optionally, such as Figure 3As shown, the electromagnetic damping valve provided in this application also includes a valve plate 13. The valve plate 13 is located on the side of the first gasket away from the first spring plate 11 and is connected to the first gasket. The valve plate 13 forms an oil passage hole 1302. The movable end of the pushing component moves away from the oil passage hole 1302 to increase the opening of the oil passage hole 1302.

[0050] Oil flow can be achieved by the valve plate 13 provided on the side of the first gasket away from the first spring plate 11 and the oil passage hole 1302 formed on the valve plate 13.

[0051] Preferably, in this application, a through hole 1301 is formed at the center of the gasket. By making the center of the through hole 1301 collinear with the center of the connecting hole 1101, the pushing component can pass through. The multiple oil passage holes 1302 formed circumferentially around the through hole 1301 can increase the oil flow rate. Furthermore, since the movable end of the pushing component can contact the valve plate 13 when not moving, it can partially block the oil passage holes 1302. And since the valve plate 13 is connected to the first gasket in this application, when the movable end of the pushing component moves away from the valve plate 13, the entire space of the radially extending oil passage holes 1302 can be released, thereby further increasing the oil flow rate.

[0052] It is understandable that impurities in the oil will clog the oil passage 1302 after prolonged use. Therefore, with the structure provided in this application, even if impurities in the oil clog the oil passage 1302, when the moving end of the push component moves away from the valve plate 13, the oil passage 1302 can be released, and the clogged impurities can be flushed away, thereby avoiding the problem of poor oil flow or inability to flow after long-term use.

[0053] Optionally, such as Figure 1 As shown, the pushing assembly in this application includes a push rod 15 and a piston head 14; the piston head 14 includes a main body and an annular platform, one end of the push rod 15 is connected to the main body, and the annular platform is formed on the outer wall of the main body along the circumference of the main body; one side of the annular platform is in contact with the first spring 11, and the other side is in contact with the gasket.

[0054] This application provides a foundation for the connection between the piston head 14 and the first spring 11 by forming an annular platform on the outer wall of the main body of the piston head 14. Furthermore, the annular platform can block part of the oil passage 1302 when in contact with it, and release all of the oil passage 1302 when it is away from it. The structure is simple and stable.

[0055] Optionally, such as Figure 1As shown, the electromagnetic damping valve provided by this utility model also includes a moving iron core 18, a stationary iron core 17, and a bearing 16. The positioning assembly also includes a housing 6. The moving iron core 18 is slidably connected to the housing 6, and the stationary iron core 17 is fixedly connected to the housing 6. The bearing 16 is located between the push rod 15 and the stationary iron core 17. The inner ring of the bearing 16 is connected to the push rod 15, and the outer ring is connected to the stationary iron core 17. The end of the push rod 15 away from the piston head 14 passes through the bearing 16 and the stationary iron core 17 and is connected to the moving iron core 18.

[0056] In actual operation, when the electromagnetic damping valve is energized, the moving iron core 18 moves toward the stationary iron core 17, thereby driving the push rod 15 to move. In turn, the push rod 15 can drive the piston head 14 to move toward the valve body assembly, thereby lifting the movable part 1102 of the first spring plate 11 and releasing the oil passage 1302.

[0057] The bearing 16 in this application is a linear bearing 16, which enables the push rod 15 to move in the axial direction.

[0058] Optionally, such as Figure 1 As shown, the valve body assembly in this application includes a valve port 1, a sealing plate 2, a valve core 3, a valve sleeve 4, a fixing sleeve 5, and an elastic element 8. The sealing plate 2 is disposed between the valve port 1 and the valve core 3 to seal the gap between the valve port 1 and the valve core 3. The valve sleeve 4 is sleeved on the valve core 3 and the valve port 1, and a first oil outlet 12 is formed on the valve sleeve 4, which is connected to the oil inlet channel. One end of the elastic element 8 abuts against the valve sleeve 4, and the other end is connected to the valve core 3 to push the valve core 3 toward the valve port 1. The fixing sleeve 5 is sleeved on the valve sleeve 4 and connected to the outer shell 6. A second oil outlet 502 is formed between the fixing sleeve 5 and the adjusting block 10.

[0059] In this application, valve port 1 has a first oil inlet, and valve core 3 has a second oil inlet. The first and second oil inlets together form the aforementioned oil inlet channel. In actual use, oil enters through the first oil inlet. Since valve core 3 uses elastic element 8 to abut against valve port 1, the pressure of the oil during inlet causes varying degrees of movement in valve core 3. When valve core 3 separates from valve port 1 by a certain distance, the oil is discharged through the first oil outlet 12 formed on valve sleeve 4. Simultaneously, some oil passes through the second oil inlet to the oil passage chamber, and through the oil passage portion 1104 formed by the first spring piece 11 and the oil passage hole 1302 formed by the sealing plate 2, enters the second oil outlet 502, thus achieving oil discharge.

[0060] Of course, the electromagnetic damping valve provided in this application also includes a coil 7, which uses the magnetic force generated by the energization of the coil 7 to move the moving iron core 18.

[0061] Optionally, such as Figure 4As shown, the fixing sleeve 5 in this application is cylindrical, and a plurality of axially extending expansion portions 501 are formed in the circumferential direction of the fixing sleeve 5. The plurality of expansion portions 501 are spaced apart, and a plurality of second oil outlets 502 are formed between the fixing sleeve 5 and the adjusting block 10.

[0062] like Figure 1 Combination Figure 4 As shown, this application enables the fixed sleeve 5 to form a gap between the fixed sleeve 5, the valve sleeve 4, and the adjusting block 10 by the expansion portion 501 formed at intervals in the circumferential direction, thereby forming the aforementioned second oil outlet 502.

[0063] Correspondingly, the area of ​​the fixed sleeve 5 where the expansion portion 501 is not formed is still in contact with the outer wall of the valve sleeve 4 and the adjusting block 10, so as to realize the positioning function of the fixed sleeve 5 on the valve sleeve 4 and the adjusting block 10.

[0064] Optionally, such as Figure 1 Combination Figure 5 As shown, the electromagnetic damping valve provided in this application also includes a second spring plate 9, which is located in the cavity formed between the valve core 3 and the valve sleeve 4. The second spring plate 9 includes a positioning part 901 and a supporting part 902. The positioning part 901 is embedded in the valve sleeve 4. There are multiple supporting parts 902, and the multiple supporting parts 902 are evenly distributed along the circumference of the positioning part 901 and extend radially in a diffuse manner. The end of the supporting part 902 away from the positioning part 901 is in contact with the valve core 3 and is used to support the valve core 3.

[0065] Because there are situations with low flow rates in actual operation, and because the force required to trigger the elastic element 8 is relatively large, the elastic element 8 cannot be activated under certain low flow and low speed conditions. This application addresses this by providing a second spring 9, which has a radially outwardly expanding support portion 902. Therefore, the support portion 902 can support the valve core 3. Under low flow and low speed conditions, the deformation of the support portion 902 can provide a certain degree of force to the valve core 3, thereby compensating for the loss of force due to the elastic element 8's inability to activate under low pressure.

[0066] In addition, this utility model also provides a shock absorber, including the electromagnetic damping valve mentioned above.

[0067] The shock absorber using the electromagnetic damping valve provided in this application can have a smoother adjustment process, thereby improving the overall smoothness of the shock absorber and enhancing the user experience.

[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electromagnetic damping valve, characterized in that, Includes valve body assembly, positioning assembly, actuation assembly, and first spring plate; The valve body assembly has an axially extending oil inlet channel, and the positioning assembly includes an adjusting block and a first gasket. One end of the adjusting block is connected to the valve body assembly, and the other end is connected to the first gasket to form an oil passage chamber. The first spring sheet has multiple oil-passing parts, which are evenly distributed along the circumference of the first spring sheet, dividing the first spring sheet into a movable part and a connecting part. Each pair of adjacent oil-passing parts have a partial positional correspondence, and connecting ribs are formed at intervals in the corresponding areas. The connecting part is located on the outer ring of the first spring piece and is pressed by the adjusting block and the first shim. A connecting hole is formed in the center of the movable part of the inner ring of the first spring piece. The movable end of the pushing component enters the oil passage cavity and passes through the connecting hole to connect with the movable part.

2. The electromagnetic damping valve according to claim 1, characterized in that, The number of oil-passing sections is multiple, and they are arranged along the circumference of the first elastic piece. Each oil-passing section includes a first oil-passing section, a connecting section, and a second oil-passing section. Both the first oil passage section and the second oil passage section extend circumferentially along the first spring piece, and the two ends of the connecting section are respectively connected to the first oil passage section and the second oil passage section, and the connecting section extends radially along the first spring piece; The ends of the first oil-passing section and the end of the second oil-passing section of the adjacent oil-passing section partially overlap radially to form the connecting rib.

3. The electromagnetic damping valve according to claim 1, characterized in that, It also includes a valve plate, which is located on the side of the first gasket away from the first spring sheet and is connected to the first gasket. The valve plate forms an oil passage hole, and the movable end of the pushing component moves away from the oil passage hole to increase the opening of the oil passage hole.

4. The electromagnetic damping valve according to claim 3, characterized in that, The gasket has a through hole at its center, and the center of the through hole is collinear with the center of the connecting hole; There are multiple oil passage holes, which extend radially and are evenly distributed circumferentially along the passage hole.

5. The electromagnetic damping valve according to claim 4, characterized in that, The actuating assembly includes a push rod and a piston head; The piston head includes a main body and an annular platform. One end of the push rod is connected to the main body, and the annular platform is formed on the outer wall of the main body along the circumference of the main body. One side of the ring-shaped portion is in contact with the first spring sheet, and the other side is in contact with the gasket.

6. The electromagnetic damping valve according to claim 5, characterized in that, It also includes a moving iron core, a stationary iron core, and a bearing. The positioning assembly also includes a housing. The moving iron core is slidably connected to the housing, and the stationary iron core is fixedly connected to the housing. The bearing is located between the push rod and the stationary iron core. The inner ring of the bearing is connected to the push rod, and the outer ring is connected to the stationary iron core. The end of the push rod away from the piston head passes through the bearing and the stationary iron core and is connected to the moving iron core.

7. The electromagnetic damping valve according to claim 6, characterized in that, The valve body assembly includes a valve port, a gasket, a valve core, a valve sleeve, a retaining sleeve, and an elastic element; The gasket is disposed between the valve port and the valve core to seal the gap between the valve port and the valve core. The valve sleeve is fitted over the valve core and the valve port, and a first oil outlet is formed on the valve sleeve. The first oil outlet is connected to the oil inlet channel. One end of the elastic element abuts against the valve sleeve, and the other end is connected to the valve core, pushing the valve core toward the valve port; The fixing sleeve is fitted over the valve sleeve and connected to the outer shell, and a second oil outlet is formed between the fixing sleeve and the adjusting block.

8. The electromagnetic damping valve according to claim 7, characterized in that, The fixed sleeve is cylindrical, and multiple axially extending expansion portions are formed in the circumferential direction of the fixed sleeve. The multiple expansion portions are spaced apart and form multiple second oil outlets between them and the adjusting block.

9. The electromagnetic damping valve according to claim 7, characterized in that, It also includes a second spring piece, which is located in the cavity formed between the valve core and the valve sleeve; The second spring includes a positioning part and a supporting part. The positioning part is embedded in the valve sleeve, and there are multiple supporting parts. The multiple supporting parts are evenly distributed around the positioning part and extend radially in a diffuse manner. The end of the supporting part away from the positioning part is in contact with the valve core and is used to support the valve core.

10. A shock absorber, characterized in that, The electromagnetic damping valve includes any one of claims 1-9 above.

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