Damper mechanism and adjustable shock absorber

Abstract

A damper mechanism and a shock absorber. The damper mechanism includes a first sleeve, a second sleeve, an upper rebound flow valve plate, a rebound flow pressure cover, and a limiting extension portion; the first sleeve includes a first valve seat portion and a first cylindrical portion connected to the first valve seat portion, and the first valve seat portion includes at least one flow passage; the second sleeve is connected to the first cylindrical portion; the upper rebound flow valve plate is located on the side of the first valve seat portion close to the second sleeve and is configured to cover at least part of the flow passage; the rebound flow pressure cover is located on the side of the upper rebound flow valve plate close to the second sleeve and is in contact with the second sleeve; the limiting extension portion is in contact with the outer side wall of the upper rebound flow valve plate to limit the movement of the upper rebound flow valve plate in its radial direction; the limiting extension portion is an extension portion of the second sleeve towards the first valve seat portion or the rebound flow pressure cover towards the first valve seat portion. The damper mechanism can reduce wear and noise, reduce the installation difficulty, and improve the installation accuracy.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a damper mechanism and an adjustable shock absorber. Background Art

[0002] In an automotive suspension system, since the spring itself also has reciprocating motion when filtering road vibrations, in order to improve the ride comfort of the vehicle, shock absorbers are usually installed in the suspension system to suppress the oscillation when the spring rebounds after absorbing shock. Therefore, the shock absorber can reduce the vibrations of the vehicle frame and body to improve the ride comfort of the vehicle.

[0003] On the other hand, with the rapid development of the automotive industry and the continuous improvement of people's living standards, people's requirements for the ride comfort of vehicles are getting higher and higher. Shock absorbers with a single damping value can no longer meet people's needs, and shock absorbers with adjustable damping values have emerged as the times require. Summary of the Invention

[0004] Embodiments of the present disclosure provide a damper mechanism and an adjustable shock absorber. The damper mechanism is provided with a limiting extension part towards the first valve seat part on the second sleeve or the rebound flow-through pressure cover. On the one hand, since the limiting extension part can limit the radial movement of the upper rebound flow-through valve plate, the centering degree of the upper rebound flow-through valve plate can be improved, the radial movement of the upper rebound flow-through valve plate can be reduced or eliminated, thereby reducing the wear and noise of the upper rebound flow-through valve plate; on the other hand, since the limiting extension part is an extension part of the second sleeve towards the first valve seat part, or the limiting extension part is an extension part of the rebound flow-through pressure cover towards the first valve seat part, the upper rebound flow-through valve plate can be first installed inside the limiting extension part, and then the second sleeve or the rebound flow-through pressure cover can be installed inside the first cylindrical part, thereby reducing the installation difficulty and improving the installation accuracy.

[0005] At least one embodiment of the present disclosure provides a damper mechanism, which includes: a first sleeve, including a first valve seat part and a first cylindrical part connected to the first valve seat part, the first valve seat part including at least one flow-through channel penetrating the first valve seat part; a second sleeve, connected to the first cylindrical part; an upper rebound flow-through valve plate, located on a side of the first valve seat part close to the second sleeve and configured to cover at least part of the flow-through channel; a rebound flow-through pressure cover, located on a side of the upper rebound flow-through valve plate close to the second sleeve and in contact with the second sleeve; and a limiting extension part, located inside the first cylindrical part and in contact with an outer sidewall of the upper rebound flow-through valve plate to limit the radial movement of the upper rebound flow-through valve plate in the radial direction of the upper rebound flow-through valve plate, the limiting extension part being an extension part of the second sleeve towards the first valve seat part, or the limiting extension part being an extension part of the rebound flow-through pressure cover towards the first valve seat part.

[0006] For example, in the damper mechanism provided in an embodiment of the present disclosure, the first valve seat portion includes a groove, one end of the limiting extension portion close to the first valve seat portion extends into the groove, and the position where the upper restoration flow valve sheet contacts the limiting extension portion is outside the groove.

[0007] For example, in the damper mechanism provided in an embodiment of the present disclosure, the inner diameter dimension of the limiting extension portion is equal to the outer diameter dimension of the upper restoration flow valve sheet.

[0008] For example, the damper mechanism provided in an embodiment of the present disclosure further includes: an upper restoration flow gasket located on a side of the upper restoration flow valve sheet away from the first valve seat portion; and a restoration flow spring sheet located on a side of the upper restoration flow gasket away from the upper restoration flow valve sheet, one side of the restoration flow spring sheet is in contact with the restoration flow gland, and the other side of the restoration flow spring sheet is in contact with the upper restoration flow gasket.

[0009] For example, in the damper mechanism provided in an embodiment of the present disclosure, the limiting extension portion is in contact with an outer sidewall of the upper restoration flow gasket to limit the movement of the upper restoration flow gasket in the radial direction of the upper restoration flow gasket.

[0010] For example, in the damper mechanism provided in an embodiment of the present disclosure, the limiting extension portion is in contact with an outer sidewall of the restoration flow spring sheet to limit the movement of the restoration flow spring sheet in the radial direction of the restoration flow spring sheet.

[0011] For example, in the damper mechanism provided in an embodiment of the present disclosure, the limiting extension portion is an extension portion of the second sleeve towards the first valve seat portion.

[0012] For example, in the damper mechanism provided in an embodiment of the present disclosure, the second sleeve includes: a first step portion including a first surface facing the first valve seat portion and a second surface facing the central axis of the second sleeve; and a second step portion including a third surface facing the first valve seat portion and a fourth surface facing the central axis of the second sleeve, one side of the first surface is connected to the limiting extension portion, the other side of the first surface is connected to the second surface, one side of the third surface is connected to the second surface, the other side of the third surface is connected to the fourth surface, and the second surface is in contact with an outer sidewall of the restoration flow gland.

[0013] For example, in the damper mechanism provided in an embodiment of the present disclosure, the third surface is in contact with a surface of the restoration flow gland away from the first valve seat portion.

[0014] For example, in the damper mechanism provided in an embodiment of the present disclosure, the limit extension part is an extension part of the restoration flow pressure cover towards the first valve seat part.

[0015] For example, in the damper mechanism provided in an embodiment of the present disclosure, the restoration flow pressure cover further includes an annular part, the limit extension part extends from the edge of the annular part towards the first valve seat part, the second sleeve partially penetrates into the first sleeve, and the annular part is in pressing fit with the end of the second sleeve extending into the first sleeve.

[0016] For example, the damper mechanism provided in an embodiment of the present disclosure further includes: a lower restoration flow valve sheet, located on the side of the first valve seat part away from the second sleeve and configured to cover at least part of the flow passage; a lower restoration flow gasket, located on the side of the lower restoration flow valve sheet away from the first valve seat part; and a restoration flow stopper, located on the side of the lower restoration flow gasket away from the lower restoration flow valve sheet.

[0017] For example, the damper mechanism provided in an embodiment of the present disclosure further includes: a restoration valve rod, including a first end and a second end, the first valve seat part includes a middle hole, the restoration valve rod passes through the middle hole, the first end is located on the side of the first valve seat part away from the second sleeve, and the second end is located on the side of the first valve seat part close to the second sleeve and is in contact with the restoration flow stopper.

[0018] For example, the damper mechanism provided in an embodiment of the present disclosure further includes: a second valve seat part, located inside the second sleeve and on the side of the restoration flow pressure cover away from the first valve seat part; and a main valve, located inside the second sleeve and on the side of the second valve seat part away from the restoration flow pressure cover.

[0019] For example, the damper mechanism provided in an embodiment of the present disclosure further includes: a piston ring, located outside the first sleeve, and the piston ring extends from the outside of the first valve seat part to the outside of the first cylindrical part.

[0020] At least one embodiment of the present disclosure further provides an adjustable shock absorber, which includes the damper mechanism described in any one of the above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present disclosure and do not limit the present disclosure.

[0022] Figure 1 FIG. is a schematic structural diagram of a damper mechanism provided in an embodiment of the present disclosure;

[0023] Figure 2 Schematic structural diagram of another damper mechanism provided by an embodiment of the present disclosure;

[0024] Figure 3 Schematic structural diagram of another damper mechanism provided by an embodiment of the present disclosure;

[0025] Figure 4 Schematic structural diagram of another damper mechanism provided by an embodiment of the present disclosure; and

[0026] Figure 5 Schematic diagram of an adjustable shock absorber provided by an embodiment of the present disclosure. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0029] The working principle of a hydraulic cylinder shock absorber is that when relative movement occurs between the vehicle frame and the axle due to vibration, the piston rod in the shock absorber moves up and down, and the hydraulic oil in the shock absorber cavity repeatedly flows from one chamber to another chamber, thereby converting the kinetic energy generated by the relative movement between the shock absorber piston rod assembly and the shock absorber cylinder assembly into heat energy of the hydraulic oil and dissipating it outward to play a damping role.

[0030] Embodiments of the present disclosure provide a damper mechanism and an adjustable shock absorber. The damper mechanism includes a first sleeve, a second sleeve, an upper rebound flow control valve plate, a rebound flow control gland, and a limiting extension; the first sleeve includes a first valve seat portion and a first cylindrical portion connected to the first valve seat portion, the first valve seat portion includes at least one flow passage penetrating the first valve seat portion; the second sleeve is connected to the first cylindrical portion; the upper rebound flow control valve plate is located on a side of the first valve seat portion close to the second sleeve and is configured to cover at least part of the flow passage; the rebound flow control gland is located on a side of the upper rebound flow control valve plate close to the second sleeve and is in contact with the second sleeve; the limiting extension is located inside the first cylindrical portion and is in contact with an outer wall of the upper rebound flow control valve plate to limit movement of the upper rebound flow control valve plate in the radial direction of the upper rebound flow control valve plate; the limiting extension is an extension of the second sleeve towards the first valve seat portion, or the limiting extension is an extension of the rebound flow control gland towards the first valve seat portion. On the one hand, since the limiting extension can limit the movement of the upper rebound flow control valve plate in its radial direction, the centering degree of the upper rebound flow control valve plate can be improved, the movement of the upper rebound flow control valve plate in its radial direction can be reduced or eliminated, thereby reducing wear and noise of the upper rebound flow control valve plate; on the other hand, since the limiting extension is an extension of the second sleeve towards the first valve seat portion, or the limiting extension is an extension of the rebound flow control gland towards the first valve seat portion, the upper rebound flow control valve plate can be first installed inside the limiting extension, and then the second sleeve or the rebound flow control gland can be installed inside the first cylindrical portion, thereby reducing the installation difficulty and improving the installation accuracy.

[0031] Next, the damper mechanism and the adjustable shock absorber provided by the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0032] A damper mechanism provided by an embodiment of the present disclosure. Figure 1 is a schematic structural diagram of a damper mechanism provided by an embodiment of the present disclosure; Figure 2 is a schematic structural diagram of another damper mechanism provided by an embodiment of the present disclosure.

[0033] As Figure 1 and 2As shown, the damper mechanism 800 includes a first sleeve 500, a second sleeve 200, an upper restoring flow valve plate 620, a restoring flow gland 630, and a limiting extension 640. The first sleeve 500 includes a first valve seat portion 510 and a first cylindrical portion 512 connected to the first valve seat portion 510. The first valve seat portion 510 includes at least one flow passage 514 penetrating the first valve seat portion 510. The second sleeve 200 is connected to the first cylindrical portion 512, for example, by threading. The upper restoring flow valve plate 620 is located on the side of the first valve seat portion 510 close to the second sleeve 200 and is configured to cover at least part of the flow passage 514. The restoring flow gland 630 is located on the side of the upper restoring flow valve plate 620 close to the second sleeve 200 and is in contact with the second sleeve 200. The limiting extension 640 is located inside the first cylindrical portion 512 and is in contact with the outer sidewall of the upper restoring flow valve plate 620 to limit the movement of the upper restoring flow valve plate 620 in the radial direction of the upper restoring flow valve plate 620. The limiting extension 640 is an extension of the second sleeve 200 towards the first valve seat portion 510, or the limiting extension 640 is an extension of the restoring flow gland 630 towards the first valve seat portion 510.

[0034] In the damper mechanism provided by the embodiments of the present disclosure, the upper restoring flow valve plate is located on the side of the first valve seat portion close to the second sleeve and is configured to cover at least part of the flow passage. The limiting extension is located inside the first cylindrical portion and is in contact with the outer sidewall of the upper restoring flow valve plate to limit the movement of the upper restoring flow valve plate in the radial direction of the upper restoring flow valve plate. On the one hand, since the limiting extension can limit the movement of the upper restoring flow valve plate in its radial direction, the centering degree of the upper restoring flow valve plate can be improved, the movement of the upper restoring flow valve plate in its radial direction can be reduced or eliminated, thereby reducing the wear and noise of the upper restoring flow valve plate. On the other hand, since the limiting extension is an extension of the second sleeve towards the first valve seat portion, or the limiting extension is an extension of the restoring flow gland towards the first valve seat portion, the upper restoring flow valve plate can be first installed inside the limiting extension, and then the second sleeve or the restoring flow gland can be installed inside the first cylindrical portion, thereby reducing the installation difficulty and improving the installation accuracy.

[0035] In some examples, as Figure 1 and Figure 2 shown, the first cylindrical portion 512 connected to the first valve seat portion 510 is an integral structure; the limiting extension 640 and the second sleeve 200 or the restoring flow gland 630 are an integral structure.

[0036] For example, as Figure 1As shown, when the limit extension portion 640 is the extension portion of the second sleeve 200 towards the first valve seat portion 510, the limit extension portion 640 and the second sleeve 200 are of an integral structure. Thus, the limit extension portion has relatively high strength and high precision, so that the damper mechanism can have relatively high resistance stability and high consistency. Additionally, since the second sleeve can be formed by a machining process using a material with relatively high strength (such as steel), it has relatively high strength and wear resistance. Setting the limit extension portion as the extension portion of the second sleeve can improve the stability and service life of the product.

[0037] For example, as Figure 2 shown, when the limit extension portion 640 is the extension portion of the return flow gland 630 towards the first valve seat portion 510, the limit extension portion 640 and the return flow gland 630 are of an integral structure. Thus, the limit extension portion can be integrally formed with the return flow gland, with a simple structure and relatively low cost.

[0038] In some examples, as Figure 1 and Figure 2 shown, the first valve seat portion 510 includes a groove 518. One end of the limit extension portion 640 close to the first valve seat portion 510 extends into the groove 518, and the position where the upper return flow valve plate 620 contacts the limit extension portion 640 is outside the groove 518. On the one hand, one end of the limit extension portion 640 close to the first valve seat portion 510 extends into the groove 518, which can better achieve sealing and prevent liquid leakage. On the other hand, the position where the upper return flow valve plate 620 contacts the limit extension portion 640 is outside the groove 518, so the upper return flow valve plate can be better supported and has better stability.

[0039] In some examples, as Figure 1 and Figure 2 shown, the inner diameter dimension of the limit extension portion 640 is equal to the outer diameter dimension of the upper return flow valve plate 620. It should be noted that the above "the inner diameter dimension of the limit extension portion is equal to the outer diameter dimension of the upper return flow valve plate" includes the case where the inner diameter dimension of the limit extension portion is strictly equal to the outer diameter dimension of the upper return flow valve plate, and also includes the case where there is a certain error between the inner diameter dimension of the limit extension portion and the outer diameter dimension of the upper return flow valve plate, as long as the upper return flow valve plate can be placed inside the limit extension portion and the limit extension portion can form an effective limiting and supporting effect on the upper return flow valve plate.

[0040] In some examples, as Figure 1 and Figure 2As shown, the damper mechanism 800 further includes an upper restoration flow-through gasket 650 and a restoration flow-through spring piece 660; the upper restoration flow-through gasket 650 is located on the side of the upper restoration flow-through valve piece 620 away from the first valve seat portion 510; the restoration flow-through spring piece 660 is located on the side of the upper restoration flow-through gasket 650 away from the upper restoration flow-through valve piece 620; one side of the restoration flow-through spring piece 660 is in contact with the restoration flow-through gland 630, and the other side of the restoration flow-through spring piece 660 is in contact with the upper restoration flow-through gasket 650. Thus, the damper mechanism can provide elastic support for the axial movement of the upper restoration flow-through valve piece through the restoration flow-through spring piece.

[0041] In some examples, such as Figure 1 and Figure 2 shown, the limiting extension portion 640 is in contact with the outer side wall of the upper restoration flow-through gasket 650 to limit the movement of the upper restoration flow-through gasket 650 in the radial direction of the upper restoration flow-through gasket 650. On the one hand, since the limiting extension portion can limit the movement of the upper restoration flow-through gasket in its radial direction, the centering degree of the upper restoration flow-through gasket can be improved, the movement of the upper restoration flow-through gasket in its radial direction can be reduced or eliminated, thereby reducing the wear and noise of the upper restoration flow-through gasket; on the other hand, since the limiting extension portion is an extension portion of the second sleeve towards the first valve seat portion, or the limiting extension portion is an extension portion of the restoration flow-through gland towards the first valve seat portion, the upper restoration flow-through gasket can be first installed inside the limiting extension portion, and then the second sleeve or the restoration flow-through gland can be installed inside the first cylindrical portion, thereby reducing the installation difficulty and improving the installation accuracy.

[0042] In some examples, such as Figure 1 and Figure 2 shown, the limiting extension portion 640 is in contact with the outer side wall of the restoration flow-through spring piece 660 to limit the movement of the restoration flow-through spring piece 660 in the radial direction of the restoration flow-through spring piece 660. Similarly, on the one hand, since the limiting extension portion can limit the movement of the restoration flow-through spring piece in its radial direction, the centering degree of the restoration flow-through spring piece can be improved, the movement of the restoration flow-through spring piece in its radial direction can be reduced or eliminated, thereby reducing the wear and noise of the restoration flow-through spring piece; on the other hand, since the limiting extension portion is an extension portion of the second sleeve towards the first valve seat portion, or the limiting extension portion is an extension portion of the restoration flow-through gland towards the first valve seat portion, the restoration flow-through spring piece can be first installed inside the limiting extension portion, and then the second sleeve or the restoration flow-through gland can be installed inside the first cylindrical portion, thereby reducing the installation difficulty and improving the installation accuracy.

[0043] It should be noted that in the damper mechanism 800 provided in this example, the restoring flow spring piece, the upper restoring flow gasket, and the upper restoring flow valve piece can be sequentially installed inside the limiting extension part first, and then the second sleeve or the restoring flow gland can be installed inside the first cylindrical part, thereby reducing the installation difficulty and improving the installation accuracy.

[0044] In some examples, such as Figure 1 and Figure 2 As shown, the damper mechanism 800 further includes a lower restoring flow valve piece 670, a lower restoring flow gasket 680, and a restoring flow stopper 690; the lower restoring flow valve piece 670 is located on the side of the first valve seat portion 510 away from the second sleeve 200 and is configured to cover at least part of the flow passage 514; the lower restoring flow gasket 680 is located on the side of the lower restoring flow valve piece 670 away from the first valve seat portion 510; and the restoring flow stopper 690 is located on the side of the lower restoring flow gasket 680 away from the lower restoring flow valve piece 670.

[0045] In some examples, such as Figure 1 and Figure 2 As shown, at least one of the above-mentioned flow passages 514 includes a first flow passage 514A and a second flow passage 514B; the upper restoring flow valve piece 620 completely covers the first flow passage 514A, thereby allowing fluid to flow from the outside of the damper mechanism into the inside of the first sleeve 500 through the first flow passage 514A and preventing fluid from flowing out of the inside of the first sleeve 500 through the first flow passage 514A; the lower restoring flow valve piece 670 completely covers the second flow passage 514B, so that fluid flows out of the inside of the first sleeve 500 through the second flow passage 514B and prevents fluid from flowing into the inside of the first sleeve 500 from the outside of the damper mechanism through the second flow passage 514B.

[0046] In some examples, such as Figure 1 and Figure 2 As shown, the damper mechanism 800 further includes a restoring valve stem 710, and the restoring valve stem 710 includes a first end 712 and a second end 714; the first valve seat portion 510 includes a middle hole 515, the restoring valve stem 710 passes through the middle hole, the first end 712 is located on the side of the first valve seat portion 510 away from the second sleeve 200, and the second end 714 is located on the side of the first valve seat portion 510 close to the second sleeve 200 and is in contact with the restoring flow stopper 690.

[0047] In some examples, such as Figure 1 and Figure 2 As shown, the upper restoring flow valve piece 620 includes a through hole 625, and the inner diameter dimension of the through hole 625 on the upper restoring flow valve piece 620 is larger than the outer diameter dimension of the second end 714. Thus, the second end does not need to limit the upper restoring flow valve piece, thereby reducing the installation difficulty.

[0048] In some examples, such as Figure 1 and Figure 2 shown, the damper mechanism 800 further includes a second valve seat portion 270 and a main valve 250; the second valve seat portion 270 is located inside the second sleeve 200 and on the side of the restoration flow pressure cover 630 away from the first valve seat portion 510; the main valve 250 is located inside the second sleeve 200 and on the side of the second valve seat portion 270 away from the restoration flow pressure cover 630. Thus, the damper mechanism can adjust the magnitude of the internal pressure by adjusting the distance between the main valve and the second valve seat portion, thereby adjusting the magnitude of the damping.

[0049] In some examples, such as Figure 1 and Figure 2 shown, the damper mechanism 800 further includes a piston ring 720, and the piston ring 720 is located outside the first sleeve 500. The piston ring 720 extends from the outside of the first valve seat portion 510 to the outside of the first cylindrical portion 512.

[0050] Next, in combination with Figure 1 and Figure 2 the cases where the limit extension portion in the damper mechanism provided by the embodiments of the present disclosure is the extension portion of the second sleeve towards the first valve seat portion and the case where the limit extension portion is the extension portion of the restoration flow pressure cover towards the first valve seat portion will be described separately.

[0051] In some examples, such as Figure 1 shown, the limit extension portion 640 is the extension portion of the second sleeve 200 towards the first valve seat portion 510. At this time, the restoration flow pressure cover can be first installed inside the second sleeve, and then the restoration flow spring piece, the upper restoration flow gasket, and the upper restoration flow valve piece are sequentially installed inside the limit extension portion of the second sleeve, and then the second sleeve is installed inside the first cylindrical portion, thereby reducing the installation difficulty and improving the installation accuracy.

[0052] In some examples, such as Figure 1As shown, the second sleeve 200 further includes a first step portion 280 and a second step portion 290; the first step portion 280 includes a first surface 281 facing the first valve seat portion 510 and a second surface 282 facing the central axis of the second sleeve 200; the second step portion 290 includes a third surface 291 facing the first valve seat portion 510 and a fourth surface 292 facing the central axis of the second sleeve 200; one side of the first surface 281 is connected to the limit extension portion 640, the other side of the first surface 281 is connected to the second surface 282, one side of the third surface 291 is connected to the second surface 282, and the other side of the third surface 291 is connected to the fourth surface 292. The second surface 282 is in contact with the outer side wall of the restoration flow pressure cover 630, so as to restrict the movement of the restoration flow pressure cover in the radial direction, and the third surface 291 is in contact with the surface of the restoration flow pressure cover 630 away from the first valve seat portion 510, so as to axially press the restoration flow pressure cover 630. Thus, by providing the above-mentioned first step portion and second step portion, and one side of the first surface is connected to the limit extension portion, the third surface is in contact with the restoration flow pressure cover, and the second surface is in contact with the outer side wall of the restoration flow pressure cover. The damper mechanism can enable the upper restoration flow valve plate to have a larger radial dimension, and at the same time, the second sleeve can support the restoration flow pressure cover through the first step portion with a larger thickness, improving the stability of the restoration flow pressure cover.

[0053] In some examples, as Figure 1 shown, the fourth surface 292 is in contact with the second valve seat portion 270, so as to be used for installing the second valve seat portion 270. Thus, due to the different inner diameter sizes of the first step portion and the second step portion, the installation difficulty can be further reduced.

[0054] In some examples, as Figure 2 shown, the limit extension portion 640 is an extension portion of the restoration flow pressure cover 630 towards the first valve seat portion 510. At this time, the restoration flow spring piece, the upper restoration flow gasket and the upper restoration flow valve plate can be first installed inside the limit extension portion of the restoration flow pressure cover, and then the restoration flow pressure cover can be installed inside the first cylindrical portion, so as to reduce the installation difficulty and improve the installation accuracy.

[0055] In some examples, as Figure 2 shown, the restoration flow pressure cover 630 further includes an annular portion 634, the limit extension portion 640 extends from the edge of the annular portion 634 towards the first valve seat portion 510, the second sleeve 200 partially penetrates into the first sleeve 500, and the annular portion 634 is in press fit with the end of the second sleeve 200 that penetrates into the first sleeve 500. Thus, the restoration flow pressure cover can be pressed by the end of the second sleeve 200 that penetrates into the first sleeve 500.

[0056] In some examples, as Figure 2As shown, the damper mechanism 800 further includes a third sleeve 100 and a solenoid valve control unit 300. The third sleeve 100 includes a first opening 101 and an annular wall 102 disposed opposite to the first opening 101. The diameter of the first opening 101 is larger than the inner diameter of the inner ring of the annular wall 102. The second sleeve 200 includes a second opening 201 and a third opening 202 disposed opposite to each other. The second opening 201 of the second sleeve 200 and a portion near the second opening 201 extend into the third sleeve 100 through the first opening 101. The solenoid valve control unit 300 is located inside the third sleeve 100. The solenoid valve control unit 300 includes a housing 310 and a valve cover 320. The housing 310 is located on the side of the valve cover 320 facing the annular wall 202. A valve armature 330 is disposed in the accommodation cavity formed by the housing 310 and the valve cover 320. The valve armature 330 is configured to reciprocate in the accommodation cavity along the arrangement direction of the third sleeve 100 and the second sleeve 200. An annular bracket 340 is disposed between the housing 310 and the valve cover 320. Two sides of the annular bracket 340 are respectively abutted against the housing 310 and the valve cover 320. The surface of the annular bracket 340 facing the second sleeve 200 includes an outermost annular edge 341. The annular edge 341 is closer to the annular wall 102 than the valve cover 320. A sealing ring 350 is disposed between the annular edge 341 and the inner side wall of the third sleeve 100, and at least a portion of the sealing ring 350 is closer to the annular wall 102 than the valve cover 320.

[0057] For example, the sealing arrangement of the annular portion 110 between the inner side wall of the third sleeve 100 and the outer side wall of the second sleeve 200 can prevent air from flowing between the inner side wall of the first sleeve and the outer side wall of the second sleeve at this position.

[0058] In the damper mechanism provided by the embodiments of the present disclosure, the first sleeve and the second sleeve on the side of the sealing ring away from the annular wall are hermetically arranged, so that the damping medium fills the accommodation cavity, which is beneficial to improving the working efficiency of the damper mechanism.

[0059] In some examples, as Figure 2 shown, the second opening 201 may be an opening surrounded by the end of the side of the second sleeve 200 facing the annular wall 102 of the third sleeve 100, and the third opening 202 may be an opening surrounded by the end of the side of the second sleeve 200 away from the annular wall 102 of the third sleeve 100.

[0060] In some examples, as Figure 2 shown, the diameter of the second opening 201 is smaller than the diameter of the first opening 101. For example, the second opening 201 of the second sleeve 200 may extend into the cylindrical cavity between the first opening 101 and the annular wall 102 of the third sleeve 100. For example, a part of the second sleeve 200 is inserted into the cylindrical cavity of the third sleeve 100, and another part of the second sleeve 200 is located outside the cylindrical cavity of the third sleeve 100.

[0061] In some examples, as Figure 2 shown, in at least one annular portion 110 of the portions where the outer sidewall of the second sleeve 200 and the inner sidewall of the third sleeve 100 face each other, the sealed setting may refer to an annular sealing area provided between the third sleeve 100 and the second sleeve 200. This annular sealing area is located on the side of the sealing ring 350 away from the annular wall 102 and cannot serve as an exhaust passage.

[0062] In some examples, as Figure 2 shown, the closed setting of the sidewall of the third sleeve 100 between the sealing ring 350 and the annular portion 110 may mean that there is no through hole or other passage connecting the internal space and the external space of the third sleeve 100 in the sidewall of the third sleeve 100 between the sealing ring 350 and the annular portion 110.

[0063] In some examples, as Figure 2 shown, the surface of the side of the sealing ring 350 away from the annular wall 102 contacts the end of the second sleeve 200 facing the annular wall 102.

[0064] In some examples, as Figure 2 shown, the surface of the side of the sealing ring 350 away from the annular wall 102 contacts the end of the outermost circle of the annular recess 210 closest to the annular wall 102.

[0065] In some examples, as Figure 2 shown, the valve cover 320 includes a notch 323, and the accommodation cavity 301 between the valve cover 320 and the housing 310 can communicate with the cavity 120. It should be noted that an exhaust passage may be provided in the portion of the second sleeve outside the third sleeve to discharge the gas in the second sleeve and the third sleeve; or, an exhaust passage may also be provided in the portion of the second sleeve between the sealing ring and the first opening to discharge the gas in the second sleeve and the third sleeve.

[0066] Figure 3 This is a schematic structural diagram of another damper mechanism provided by an embodiment of the present disclosure. As Figure 3As shown, the damper mechanism 800 includes a first sleeve 500, an upper restoration flow valve plate 620, a restoration valve rod 710, and a restoration flow limiter 730; the first sleeve 500 includes a first valve seat portion 510 and a first cylindrical portion 512 connected to the first valve seat portion 510, and the first valve seat portion 510 includes at least one flow channel 514 and a middle hole 515 penetrating the first valve seat portion 510; the restoration valve rod 710 includes a first end 712 and a second end 714; the restoration valve rod 710 passes through the middle hole, the first end 712 is located on the side of the first valve seat portion 510 away from the second sleeve 200, and the second end 714 is located on the side of the first valve seat portion 510 close to the second sleeve 200. The upper restoration flow valve plate 620 is sleeved on the second end 714, and the second end 714 is configured to limit the movement of the upper restoration flow valve plate 620 in the radial direction of the upper restoration flow valve plate 620; the restoration flow limiter 730 is located on the side of the restoration flow gland 630 away from the upper restoration flow valve plate 620, and is configured to limit the movement of the restoration flow gland 630 in the axial direction of the restoration valve rod 710.

[0067] In the damper mechanism provided in this example, the upper restoration flow valve plate is sleeved on the second end, and the second end is configured to limit the movement of the upper restoration flow valve plate in the radial direction of the upper restoration flow valve plate. Since the second end can limit the movement of the upper restoration flow valve plate in its radial direction, the centering degree of the upper restoration flow valve plate can be improved, the movement of the upper restoration flow valve plate in its radial direction can be reduced or eliminated, thereby reducing the wear and noise of the upper restoration flow valve plate.

[0068] In some examples, as Figure 3 shown, the damper mechanism 800 further includes an upper restoration flow gasket 650, which is sleeved on the second end 712; the restoration flow limiter 730 is located on the side of the upper restoration flow gasket 650 away from the upper restoration flow valve plate 620, and is in pressing fit with the upper restoration flow gasket 650.

[0069] For example, the restoration flow limiter 730 can be fixed to the second end 714 by threads to be in pressing fit with the upper restoration flow gasket 650.

[0070] In some examples, as Figure 3As shown, the upper restoration flow valve plate 620 includes a through hole 625, and the inner diameter dimension of the through hole 625 on the upper restoration flow valve plate 620 is equal to the outer diameter dimension of the second end portion 714. It should be noted that the above "the inner diameter dimension of the through hole on the upper restoration flow valve plate is equal to the outer diameter dimension of the second end portion" includes the case where the inner diameter dimension of the through hole on the upper restoration flow valve plate is strictly equal to the outer diameter dimension of the second end portion, and also includes the case where there is a certain error between the inner diameter dimension of the through hole on the upper restoration flow valve plate and the outer diameter dimension of the second end portion, as long as the upper restoration flow valve plate can be sleeved on the second end portion, and the second end portion can form an effective limiting and supporting effect on the upper restoration flow valve plate.

[0071] In some examples, such as Figure 3 As shown, the outer diameter dimension of the upper restoration flow valve plate 620 is smaller than the inner diameter dimension of the first cylindrical portion 512. Thus, the first cylindrical portion does not need to limit the upper restoration flow valve plate, thereby reducing the installation difficulty.

[0072] In some examples, such as Figure 3 As shown, the outer diameter dimension of the upper restoration flow gasket 650 is smaller than the outer diameter dimension of the upper restoration flow valve plate 620. Thus, a certain deformation can occur in the outer portion of the upper restoration flow gasket 650, thereby allowing fluid to flow through the flow channel 514.

[0073] In some examples, such as Figure 3 As shown, the outer diameter dimension of the restoration flow limiter 730 is smaller than the outer diameter dimension of the upper restoration flow gasket 650, thereby facilitating the observation and maintenance of the restoration flow gland and the upper restoration flow valve plate.

[0074] In some examples, such as Figure 3 As shown, the damper mechanism 800 further includes a lower restoration flow valve plate 670, a lower restoration flow gasket 680, and a restoration flow stopper 690; the lower restoration flow valve plate 670 is located on the side of the first valve seat portion 510 away from the second sleeve 200 and is configured to cover at least a part of the flow channel 514; the lower restoration flow gasket 680 is located on the side of the lower restoration flow valve plate 670 away from the first valve seat portion 510; and the restoration flow stopper 690 is located on the side of the lower restoration flow gasket 680 away from the lower restoration flow valve plate 670.

[0075] In some examples, such as Figure 3As shown, the damper mechanism 800 further includes a second valve seat portion 270 and a main valve 250; the second valve seat portion 270 is located inside the second sleeve 200 and on the side of the return flow gland 630 away from the first valve seat portion 510; the main valve 250 is located inside the second sleeve 200 and on the side of the second valve seat portion 270 away from the return flow gland 630. Thus, the damper mechanism can adjust the magnitude of the internal pressure by adjusting the distance between the main valve and the second valve seat portion, thereby adjusting the magnitude of the damping.

[0076] In some examples, as Figure 3 shown, the damper mechanism 800 further includes a piston ring 720, and the piston ring 720 is located outside the first sleeve 500. The piston ring 720 extends from the outside of the first valve seat portion 510 to the outside of the first cylindrical portion 512.

[0077] In some examples, as Figure 3 shown, at least one flow passage 514 is disposed around the middle hole 515.

[0078] In some examples, as Figure 3 shown, the first cylindrical portion 512 connected to the first valve seat portion 510 is an integral structure. Of course, the embodiments of the present disclosure include but are not limited to this. The first valve seat portion and the first cylindrical portion may also be separate structures and then fixedly connected together.

[0079] Figure 4 This is a schematic structural diagram of another damper mechanism provided by an embodiment of the present disclosure. As Figure 4 [[ID=...]]shown, the damper mechanism 800 includes a first sleeve 500, an upper return flow valve plate 620, a return valve rod 710, and a return flow limiter 730; the first sleeve 500 includes a first valve seat portion 510 and a first cylindrical portion 512 connected to the first valve seat portion 510. The first valve seat portion 510 is located inside the first sleeve portion 512 and at one end of the first sleeve portion 512 along its axis. The first valve seat portion 510 includes at least one flow passage 514 and a middle hole 515 penetrating the first valve seat portion 510; the return valve rod 710 includes a first end portion 712 and a second end portion 714; the return valve rod 710 passes through the middle hole, the first end portion 712 is located on the side of the first valve seat portion 510 away from the second sleeve 200, and the second end portion 714 is located on the side of the first valve seat portion 510 close to the second sleeve 200. The upper return flow valve plate 620 is sleeved on the second end portion 714, and the second end portion 714 is configured to limit the movement of the upper return flow valve plate 620 in the radial direction of the upper return flow valve plate 620; the return flow limiter 730 is located on the side of the return flow gland 630 away from the upper return flow valve plate 620 and is configured to limit the movement of the return flow gland 630 in the axial direction of the return valve rod 710.

[0080] In the damper mechanism provided by this example, the upper restoration flow valve sheet is sleeved on the second end portion, and the second end portion is configured to limit the movement of the upper restoration flow valve sheet in the radial direction of the upper restoration flow valve sheet. Since the second end portion can limit the movement of the upper restoration flow valve sheet in its radial direction, the centering degree of the upper restoration flow valve sheet can be improved, the movement of the upper restoration flow valve sheet in its radial direction can be reduced or eliminated, thereby reducing the wear and noise of the upper restoration flow valve sheet.

[0081] For example, as Figure 4 shown, the first valve seat portion 510 can be threadedly connected to one end of the first sleeve portion 512 along its axis. Of course, the embodiments of the present disclosure include but are not limited to this.

[0082] At least one embodiment of the present disclosure also provides an adjustable shock absorber. Figure 5 Schematic diagram of an adjustable shock absorber provided by an embodiment of the present disclosure. As Figure 5 shown, the adjustable shock absorber 900 includes the above-mentioned damper mechanism 800. Thus, while the adjustable shock absorber has the characteristic of adjustable damping, it has relatively low noise and a long service life, and also has a reduced installation difficulty.

[0083] The following points need to be explained:

[0084] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0085] (2) Without conflict, the features in the same embodiment and different embodiments of the present disclosure can be combined with each other.

[0086] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A damper mechanism, comprising: A first sleeve, including a first valve seat portion and a first cylindrical portion connected to the first valve seat portion, the first valve seat portion including at least one flow passage penetrating through the first valve seat portion; A second sleeve, connected to the first cylindrical portion; An upper restoration flow valve plate, located on a side of the first valve seat portion close to the second sleeve and configured to cover at least a part of the flow passage; A restoration flow gland, located on a side of the upper restoration flow valve plate close to the second sleeve and in contact with the second sleeve; and A limit extension portion, located inside the first cylindrical portion and in contact with an outer sidewall of the upper restoration flow valve plate to limit movement of the upper restoration flow valve plate in a radial direction of the upper restoration flow valve plate, wherein the limit extension portion is an extension portion of the second sleeve towards the first valve seat portion, or the limit extension portion is an extension portion of the restoration flow gland towards the first valve seat portion, and the first valve seat portion and the first cylindrical portion are an integral structure.

2. The damper mechanism according to claim 1, wherein, The first valve seat portion includes a groove, and an end of the limit extension portion close to the first valve seat portion extends into the groove, and a position where the upper restoration flow valve plate contacts the limit extension portion is outside the groove.

3. The damper mechanism according to claim 1, wherein, An inner diameter dimension of the limit extension portion is equal to an outer diameter dimension of the upper restoration flow valve plate.

4. The damper mechanism according to any one of claims 1 - 3, further comprising: An upper restoration flow gasket, located on a side of the upper restoration flow valve plate away from the first valve seat portion; And A restoration flow spring plate, located on a side of the upper restoration flow gasket away from the upper restoration flow valve plate, wherein one side of the restoration flow spring plate is in contact with the restoration flow gland, and the other side of the restoration flow spring plate is in contact with the upper restoration flow gasket.

5. The damper mechanism according to claim 4, wherein, The limit extension portion is in contact with an outer sidewall of the upper restoration flow gasket to limit movement of the upper restoration flow gasket in a radial direction of the upper restoration flow gasket.

6. The damper mechanism according to claim 4, wherein, The limit extension portion is in contact with an outer sidewall of the restoration flow spring plate to limit movement of the restoration flow spring plate in a radial direction of the restoration flow spring plate.

7. The damper mechanism according to any one of claims 1-3, wherein, The limit extension portion is an extension portion of the second sleeve towards the first valve seat portion.

8. The damper mechanism according to claim 7, wherein, The second sleeve includes: A first step portion, including a first surface facing the first valve seat portion and a second surface facing a central axis of the second sleeve; and A second step portion, including a third surface facing the first valve seat portion and a fourth surface facing the central axis of the second sleeve, wherein one side of the first surface is connected to the limit extension portion, the other side of the first surface is connected to the second surface, one side of the third surface is connected to the second surface, the other side of the third surface is connected to the fourth surface, and the second surface is in contact with an outer sidewall of the restoration flow gland.

9. The damper mechanism according to claim 8, wherein, The third surface is in contact with a surface of the restoration flow gland away from the first valve seat portion.

10. The damper mechanism according to any one of claims 1 - 3, wherein, The limit extension portion is an extension portion of the restoration flow gland towards the first valve seat portion.

11. The damper mechanism according to claim 10, wherein, The restored flow compression gland further includes an annular portion, the limiting extension portion extends from the edge of the annular portion towards the first valve seat portion, the second sleeve partially penetrates into the first sleeve, and the annular portion is in pressing fit with the end of the second sleeve extending into the first sleeve.

12. The damper mechanism according to any one of claims 1-3 further includes: A lower restored flow valve plate, located on the side of the first valve seat portion away from the second sleeve and configured to cover at least a part of the flow passage; A lower restored flow gasket, located on the side of the lower restored flow valve plate away from the first valve seat portion; And A restored flow stopper, located on the side of the lower restored flow gasket away from the lower restored flow valve plate.

13. The damper mechanism according to claim 12 further includes: A restored valve stem, including a first end and a second end, wherein, the first valve seat portion includes a middle hole, the restored valve stem passes through the middle hole, the first end is located on the side of the first valve seat portion away from the second sleeve and is in contact with the restored flow stopper, and the second end is located on the side of the first valve seat portion close to the second sleeve.

14. The damper mechanism according to any one of claims 1-3 further includes: A second valve seat portion, located inside the second sleeve and on the side of the restored flow compression gland away from the first valve seat portion; And A main valve, located inside the second sleeve and on the side of the second valve seat portion away from the restored flow compression gland.

15. The damper mechanism according to any one of claims 1-3 further includes: A piston ring, located outside the first sleeve, wherein, the piston ring extends from the outside of the first valve seat portion to the outside of the first cylindrical portion.

16. An adjustable shock absorber, including the damper mechanism according to any one of claims 1-15.

Images