Pressing piece, bottom valve structure, shock absorber and vehicle

Abstract

The utility model discloses a pressing piece, a bottom valve structure, a shock absorber and a vehicle, the pressing piece is used for the bottom valve structure of the shock absorber, the pressing piece comprises a mounting part and a plurality of pressing plates, one ends of the pressing plates are connected with the mounting part, the ends, away from the mounting part, of the pressing plates are located on the same side of the mounting part in the thickness direction, and the pressing plates are elastic components. The pressing piece comprises the mounting part and the pressing plates, one ends of the pressing plates are connected with the mounting part, the ends, away from the mounting part, of the pressing plates are located on the same side of the mounting part in the thickness direction, the pressing plates make contact with the bottom valve structure stably, chippings are not prone to being generated, and the oil leakage risk can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a pressing piece, a bottom valve structure, a shock absorber and a vehicle. Background Art

[0002] As the core component of the automobile chassis, the automobile shock absorber mainly functions to attenuate the vibration and impact generated during the operation of the automobile. The ideal shock absorber damping force should not have sudden changes such as oscillation and jump. The damping force of the automobile shock absorber is mainly achieved by the internal piston valve system and the bottom valve system by controlling the flow rate and pressure of the internal shock absorber oil.

[0003] The existing bottom valve structure uses a cone spring as a pressing part. The contact point between the cone spring and the bottom valve seat is unstable and easily eccentric. Particles from the friction between the cone spring and the bottom valve structure will also enter the oil, causing oil leakage in the bottom valve and affecting the damping characteristics of the shock absorber. Utility Model Content

[0004] The utility model aims to provide a pressing piece, a bottom valve structure, a shock absorber and a vehicle, which solve the problems of unstable contact between the pressing piece and the bottom valve seat and oil leakage caused by friction products entering the oil.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a clamping piece, which is used for a bottom valve structure of a shock absorber. The clamping piece includes a mounting portion and a plurality of pressure plates, one end of the plurality of pressure plates is connected to the mounting portion, one end of the plurality of pressure plates away from the mounting portion is located on the same side of the mounting portion in a thickness direction, and the pressure plate is an elastic component.

[0007] In one embodiment, a plurality of the pressure plates are arranged at intervals along the circumference of the mounting portion and extend along the radial direction of the mounting portion.

[0008] In one embodiment, the mounting portion includes a first surface, a second surface and a connecting surface, the second surface is opposite to the first surface, the connecting surface connects the first surface and the second surface, the pressure plate is connected to the connecting surface, and one end of the pressure plate away from the mounting portion is located on the side of the first surface opposite to the second surface.

[0009] In one embodiment, the connection surface includes a first connection surface and a second connection surface which are smoothly connected in a circumferential direction of the mounting portion, the first connection surface is recessed relative to the second connection surface, and the pressure plate is connected to the second connection surface.

[0010] In one embodiment, the end of the pressing plate connected to the mounting portion has a first width D1, and the end of the pressing plate away from the mounting portion has a second width D2, satisfying: D1>D2.

[0011] In one embodiment, the width of the pressing plate gradually increases from an end of the pressing plate away from the mounting portion to an end of the pressing plate connected to the mounting portion.

[0012] In one embodiment, the pressure plate includes a main body and a contact portion, one end of the main body is connected to the mounting portion, the contact portion is smoothly connected to an end of the main body away from the mounting portion, the contact portion includes a contact surface, the contact surface is facing away from the mounting portion, and the contact surface is an arc surface.

[0013] In one embodiment, the main body includes a first sub-part and a second sub-part, one end of the first sub-part is connected to the mounting part, and the other end is connected to the second sub-part, an end of the second sub-part away from the first sub-part is connected to the contact part, and the stiffness of the first sub-part is greater than the stiffness of the second sub-part.

[0014] In one embodiment, the orthographic projection of the pressing member along the thickness direction of the pressing member is a centrally symmetrical structure.

[0015] In the second aspect, the utility model also provides a bottom valve structure, including a bottom valve seat, a first valve plate group, a fixing part and a clamping part as described in any one of the various embodiments of the first aspect, wherein the bottom valve seat is suitable for being connected to the inner tube of the shock absorber, the first valve plate group is arranged between the bottom valve seat and the clamping part, and the fixing part is passed through the clamping part to clamp the mounting portion and the first valve plate group.

[0016] In one embodiment, the bottom valve seat further includes a second valve sheet group, the second valve sheet group is arranged on a side of the bottom valve seat facing away from the pressing member, and the fixing member is further penetrated through the second valve sheet group.

[0017] In a third aspect, the utility model further provides a shock absorber, comprising a cylinder and a bottom valve structure as described in any one of the various embodiments of the second aspect, wherein the bottom valve structure is connected to the cylinder.

[0018] In a fourth aspect, the utility model further provides a vehicle, comprising a vehicle body and the shock absorber as described in the third aspect, wherein the shock absorber is connected to the vehicle body.

[0019] By setting a clamping piece including a mounting portion and multiple pressure plates, one end of the pressure plate is connected to the mounting portion, and the end away from the mounting portion is located on the same side of the thickness direction of the mounting portion. The contact between the pressure plate and the bottom valve structure is stable, not easy to contaminate the oil, and the risk of oil leakage can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a schematic diagram of a shock absorber of an embodiment;

[0022] Figure 2 is a schematic top view of a pressing member of an embodiment;

[0023] Figure 3 is a front view schematic diagram of a pressing member of an embodiment;

[0024] Figure 4 is a cross-sectional view of a bottom valve structure of an embodiment;

[0025] Figure 5 The figure is an exploded view of the bottom valve structure of an embodiment.

[0026] Description of reference numerals:

[0027] 1000- shock absorber;

[0028] 100-bottom valve structure;

[0029] 10-pressing member, 11-installing portion, 111-first surface, 112-second surface, 113-connecting surface, 114-first connecting surface, 115-second connecting surface, 116-second mounting hole, 12-pressing plate, 121-main body, 122-contact portion, 123-contact surface;

[0030] D1-first width, D2-second width;

[0031] 20-first valve plate group, 21-first compensation valve plate, 211-circulation groove, 22-second compensation valve plate, 23-clearance valve plate, 24-first preload valve plate;

[0032] 30-bottom valve seat, 31-first mounting hole, 32-flow hole, 33-bypass hole;

[0033] 40-fixing piece, 41-screw, 42-nut;

[0034] 50-Blocking piece;

[0035] 60-second valve plate group, 61-adjusting gasket, 62-throttle valve plate, 63-second pre-tightening valve plate, 64-combined valve plate;

[0036] 200-cylinder body, 210-upper oil chamber, 220-lower oil chamber. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0039] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0040] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0041] An embodiment of the utility model provides a vehicle, comprising a vehicle body and a shock absorber in the embodiment of the utility model, wherein the shock absorber is connected to the vehicle body.

[0042] Optionally, the vehicle may be an electric vehicle, a gasoline vehicle, or a gasoline-electric hybrid vehicle, and the vehicle may be a sedan, an off-road vehicle, etc. The vehicle may be divided into mini vehicles, light vehicles, mid-size vehicles, and high-end vehicles, etc. according to the displacement of the engine, and there is no specific limitation.

[0043] Optionally, the vehicle body is made of a material with high structural strength, specifically metal materials, high-strength plastics, ceramics, carbon fiber, etc. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron and iron alloys, etc. The vehicle body is a split structure, with multiple parts connected and fixed by welding, bonding, clamping, screwing, etc.

[0044] Optionally, the shock absorber and the vehicle body may be connected by welding, bonding, clamping, screwing, etc., without specific limitation.

[0045] Optionally, the shock absorber is suitable for connecting with the suspension of the vehicle body, and can also play a vibration reduction role in the passive response state of the active suspension. The passive response state of the active suspension means that when the active suspension system fails or fails, the suspension system degenerates into a traditional passive suspension system, that is, it no longer has the ability of active adjustment and control, and can only rely on the inherent characteristics of the suspension to absorb and buffer road impact.

[0046] The embodiment of the utility model adopts the shock absorber in the embodiment of the utility model, and the shock absorber has good vibration reduction effect, is not prone to oil leakage, and has a long service life.

[0047] Please refer to Figure 1 The embodiment of the utility model further provides a shock absorber 1000 , which includes a cylinder 200 and a bottom valve structure 100 in the embodiment of the utility model, and the bottom valve structure 100 is connected to the cylinder 200 .

[0048] Optionally, the bottom valve structure 100 and the cylinder 200 may be connected by welding, bonding, clamping, screwing, etc., without specific limitation.

[0049] Optionally, the barrel 200 may be cylindrical, prismatic, etc., without limitation.

[0050] Optionally, the bottom valve structure 100 is connected to the inner wall of the cylinder 200 , and separates the working cylinder oil chamber of the shock absorber 1000 into an upper oil chamber 210 and a lower oil chamber 220 .

[0051] The shock absorber 1000 in the embodiment of the utility model adopts the bottom valve structure 100 in the embodiment of the utility model. The bottom valve structure 100 is connected to the cylinder 200, and the connection temperature is stable and oil leakage is not easy.

[0052] The embodiment of the utility model further provides a bottom valve structure 100 , which includes the pressing member 10 in the embodiment of the utility model.

[0053] The pressing member 10 in the embodiment of the utility model is described in detail below.

[0054] Please refer to Figure 1 and Figure 2 The utility model provides a pressing member 10, which is used for a bottom valve structure 100 of a shock absorber 1000. The pressing member 10 includes a mounting portion 11 and a plurality of pressing plates 12, one end of the plurality of pressing plates 12 is connected to the mounting portion 11, one end of the plurality of pressing plates 12 away from the mounting portion 11 is located on the same side of the mounting portion 11 in the thickness direction, and the pressing plates 12 are elastic components.

[0055] Define the direction first. Please refer to Figure 1 , Z is the thickness direction of the pressing piece 10.

[0056] Optionally, the clamping member 10 may be an integrated structure, that is, the mounting portion 11 and the plurality of clamping plates 12 are an integrated structure made by an integrated molding process, and the integrated molding process may specifically be stamping, casting, etc. The clamping member 10 may also be a split structure, and the mounting portion 11 and the plurality of clamping plates 12 may be connected and fixed by welding, bonding, clamping, screwing, etc., without limitation.

[0057] Optionally, the mounting portion 11 is a flat plate, and the shape may be circular, square, polygonal, etc., without specific limitation.

[0058] Optionally, the number of the pressing plates 12 may be 4 to 8, such as 5, 6, 8, etc., and a suitable number of pressing plates 12 may be selected according to a specific application without limitation.

[0059] Optionally, one end of the plurality of pressure plates 12 away from the mounting portion 11 may extend radially of the mounting portion 11 , or an extension direction of one end of the plurality of pressure plates 12 away from the mounting portion 11 may have an angle with the radial direction of the mounting portion 11 , and there is no specific limitation.

[0060] Optionally, two adjacent pressing plates 12 may be connected to each other or may be spaced apart from each other, without any specific limitation.

[0061] As a core component of the automobile chassis, the shock absorber 1000 mainly functions to attenuate the vibration and impact generated during the operation of the automobile. The damping force of the ideal shock absorber 1000 should not have sudden changes such as oscillation and jump. The damping force of the automobile shock absorber 1000 is mainly achieved by the internal piston valve system and the bottom valve structure 100 by controlling the flow rate and pressure of the oil inside the shock absorber 1000.

[0062] The existing bottom valve structure 100 uses a cone spring as the pressing member 10, and the contact point between the cone spring and the bottom valve seat 30 is unstable and easily eccentric, thereby causing oil leakage. In addition, particles caused by friction between the cone spring and the bottom valve structure 100 will also enter the oil, causing oil leakage in the bottom valve, affecting the damping characteristics of the shock absorber 1000.

[0063] The clamping piece 10 in the embodiment of the utility model is provided with a mounting portion 11 and a plurality of pressure plates 12, one end of the pressure plate 12 is connected to the mounting portion 11, and the end away from the mounting portion 11 is located on the same side in the thickness direction of the mounting portion 11. The contact between the pressure plate 12 and the bottom valve structure 100 is stable, and debris is not easily generated, which can reduce the risk of oil leakage.

[0064] Optionally, a plurality of pressure plates 12 are arranged at intervals along the circumference of the mounting portion 11 and extend along the radial direction of the mounting portion 11 , which facilitates manufacturing while ensuring the stability of the contact point.

[0065] Optional, such as Figure 2As shown, the mounting portion 11 includes a first surface 111 , a second surface 112 and a connecting surface 113 , the second surface 112 is opposite to the first surface 111 , and the connecting surface 113 connects the first surface 111 and the second surface 112 .

[0066] Optionally, the mounting portion 11 includes a first surface 111 and a second surface 112 opposite to each other in the thickness direction Z of the pressing member 10. The pressing plate 12 can be connected to the first surface 111 or the second surface 112, or the pressing plate 12 is connected to the connecting surface 113, and all of the above methods are possible without specific limitation.

[0067] Optionally, the pressing plate 12 is connected to the connecting surface 113 , and one end of the pressing plate 12 away from the mounting portion 11 is located on a side of the first surface 111 facing away from the second surface 112 .

[0068] Optionally, the first surface 111 of the pressing plate 12 is suitable for contacting the first valve sheet set 20 of the bottom valve structure 100. The end of the pressing plate 12 away from the mounting portion 11 is located on the side of the first surface 111 facing away from the second surface 112, so that when the end of the pressing plate 12 away from the mounting portion 11 contacts the first valve sheet set 20 of the bottom valve structure 100, there is a spacing distance between the mounting portion 11 and the first valve sheet set 20, which plays a pre-tightening role.

[0069] By setting the mounting portion 11 to include a first surface 111 and a second surface 112 opposite to each other and a connecting surface 113 connecting the first surface 111 and the second surface 112, the pressing plate 12 is connected to the connecting surface 113, and the end of the pressing plate 12 away from the mounting portion 11 is located on the side of the first surface 111 facing away from the second surface 112, so as to facilitate contact and assembly between the mounting portion 11 and the remaining components of the bottom valve structure 100, and also to ensure a spacing distance between the mounting portion 11 and the first valve plate group 20, so that the clamping member 10 pre-tightens the first valve plate group 20.

[0070] Optional, such as Figure 2 As shown, the connection surface 113 includes a first connection surface 114 and a second connection surface 115 which are smoothly connected in the circumferential direction of the mounting portion 11 , the first connection surface 114 is recessed relative to the second connection surface 115 , and the pressing plate 12 is connected to the second connection surface 115 .

[0071] Optionally, there are multiple first connection surfaces 114 and multiple second connection surfaces 115 , and the number of the first connection surfaces 114 and the second connection surfaces 115 corresponds to the number of the pressing plates 12 , and there is no specific limitation.

[0072] Optionally, the first connecting surface 114 and the second connecting surface 115 may be a plane, a curved surface, a folded surface, etc. The shapes of the first connecting surface 114 and the second connecting surface 115 may be the same or different, and there is no specific limitation.

[0073] For example, Figure 2As shown, there are five pressing plates 12, and the five pressing plates 12 are arranged at equal intervals along the circumference of the mounting portion 11, and there are five first connecting surfaces 114 and five second connecting surfaces 115. The first connecting surface 114 is an arc surface, and the second connecting surface 115 is a plane, and the pressing plate 12 is connected to the second connecting surface 115. Two adjacent second connecting surfaces 115 are connected by the first connecting surface 114, and the first connecting surface 114 and the second connecting surface 115 are smoothly connected.

[0074] By setting a connecting surface 113 including a first connecting surface 114 and a second connecting surface 115 which are smoothly connected in the circumferential direction of the mounting portion 11, the pressure plate 12 is connected to the second connecting surface 115, and the first connecting surface 114 is recessed relative to the second connecting surface 115, the area of ​​the mounting portion 11 in the thickness direction Z of the clamping member 10 can be reduced, thereby increasing the amount of oil flowing through and facilitating the circulation of oil.

[0075] Optional, such as Figure 2 As shown, the end of the pressing plate 12 connected to the mounting portion 11 has a first width D1, and the end of the pressing plate 12 away from the mounting portion 11 has a second width D2, satisfying: D1>D2.

[0076] Optionally, the width of the pressing plate 12 may increase gradually or suddenly from one end of the pressing plate 12 away from the mounting portion 11 to the end of the pressing plate 12 connected to the mounting portion 11, and there is no specific limitation thereto.

[0077] Optionally, in one embodiment, as Figure 2 As shown, the width of the pressure plate 12 gradually increases from the end of the pressure plate 12 away from the mounting portion 11 to the end where the pressure plate 12 is connected to the mounting portion 11. The width of the end where the pressure plate 12 is connected to the mounting portion 11 is larger and the connection is stable. The end of the pressure plate 12 away from the mounting portion 11 is used to contact the first valve plate group 20 and has a smaller width, which is convenient for the oil to break through the pre-tightening force of the clamping member 10 and flow when the shock absorber 1000 is working.

[0078] By setting the first width D1 of the end where the pressure plate 12 is connected to the mounting portion 11 to be greater than the second width D2 of the end where the pressure plate 12 is away from the mounting portion 11, the connection between the pressure plate 12 and the mounting portion 11 is stable, and it is convenient for the oil to break through the preload force of the clamping member 10 and flow when the shock absorber 1000 is working.

[0079] Optionally, the thickness of the pressing plate 12 gradually increases from one end of the pressing plate 12 away from the mounting portion 11 to the end where the pressing plate 12 is connected to the mounting portion 11 , which can improve the stability of the connection between the pressing plate 12 and the mounting portion 11 .

[0080] Optional, such as Figure 2 and Figure 3As shown, the pressure plate 12 includes a main body 121 and a contact portion 122. One end of the main body 121 is connected to the mounting portion 11. The contact portion 122 is smoothly connected to an end of the main body 121 away from the mounting portion 11. The contact portion 122 includes a contact surface 123. The contact surface 123 faces away from the mounting portion 11 and is an arc surface.

[0081] Optionally, the pressing plate 12 may be an integrated structure, that is, the main body 121 and the contact part 122 are an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, casting, etc. The pressing member 10 may also be a split structure, and the main body 121 and the contact part 122 may be connected and fixed by welding, bonding, clamping, screwing, etc., without limitation.

[0082] Optionally, the contact portion 122 is a flat plate, and the shape of the contact surface 123 can be square, arc, trapezoidal, etc., without specific limitation.

[0083] Optionally, when the clamping piece 10 is assembled in the bottom valve structure 100, the contact portion 122 is suitable for contacting the first valve sheet group 20 of the bottom valve structure 100, and the contact surface 123 faces away from the mounting portion 11 and contacts the surface of the first valve sheet group 20. At this time, the contact surface 123 is parallel to the first surface 111 of the mounting portion 11 to achieve surface contact between the clamping piece 10 and the first valve sheet group 20.

[0084] The pressure plate 12 includes a main body 121 and a contact portion 122, one end of the main body 121 is connected to the mounting portion 11, the contact portion 122 is smoothly connected to one end of the main body 121 away from the mounting portion 11, and a contact surface 123 of the contact portion 122 faces away from the mounting portion 11 and is suitable for contacting the first valve plate group 20 of the bottom valve structure 100. The contact surface 123 is large in area, stably supported, and is not easy to scratch the surface of the first valve plate group 20.

[0085] Optionally, the main body 121 includes a first sub-section (not shown in the figure) and a second sub-section (not shown in the figure), one end of the first sub-section is connected to the mounting portion 11, and the other end is connected to the second sub-section, and the end of the second sub-section away from the first sub-section is connected to the contact portion 122, and the stiffness of the first sub-section is greater than the stiffness of the second sub-section.

[0086] Optionally, the main body 121 may be an integrated structure, that is, the first sub-section and the second sub-section are an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, casting, etc. The main body 121 may also be a split structure, and the first sub-section and the second sub-section may be connected and fixed by welding, bonding, clamping, screwing, etc., without limitation.

[0087] Optionally, the first sub-section and the second sub-section may be made of different materials to achieve a difference in stiffness, or may be made of different processing techniques to achieve different stiffness, and there is no specific limitation.

[0088] Optionally, the stiffness of the contact portion 122 and the second sub-portion may be the same or different, and there is no specific limitation thereto.

[0089] By setting the main body 121 to include a first sub-part and a second sub-part, one end of the first sub-part is connected to the mounting part 11, and the end of the second sub-part away from the first sub-part is connected to the contact part 122. The stiffness of the first sub-part is greater than that of the second sub-part. In the pre-tightening stage, the first valve plate group 20 of the bottom valve structure 100 can be compressed. When the oil needs to break through the pre-tightening force of the clamping member 10, due to the smaller stiffness of the second sub-part, the oil moves to break the force of the second sub-part and push the first valve plate group 20 open for circulation.

[0090] Optionally, the orthographic projection of the pressing member 10 along the thickness direction Z of the pressing member 10 is a centrally symmetrical structure.

[0091] Optionally, the mounting portion 11 of the clamping member 10 is a centrally symmetrical structure, and a plurality of pressure plates 12 are arranged at equal intervals along the circumference of the mounting portion 11. The clamping member 10 is not prone to eccentricity, has stable contact, and is not prone to oil leakage.

[0092] Please refer to Figure 1 , Figure 4 and Figure 5 The embodiment of the utility model further provides a bottom valve structure 100, comprising a bottom valve seat 30, a first valve sheet set 20, a fixing member 40 and a pressing member 10 in the embodiment of the utility model. The bottom valve seat 30 is suitable for connecting with the inner cylinder of the shock absorber 1000, the first valve sheet set 20 is arranged between the bottom valve seat 30 and the pressing member 10, and the fixing member 40 is passed through the pressing member 10 to press the mounting portion 11 and the first valve sheet set 20.

[0093] Optionally, the shape of the bottom valve seat 30 is similar to the cross-sectional shape of the inner cylinder of the shock absorber 1000. The bottom valve seat 30 and the inner cylinder of the shock absorber 1000 may be connected by welding, bonding, clamping, screwing, etc., without specific limitation.

[0094] Optionally, the bottom valve seat 30 is provided with a first mounting hole 31, a flow hole 32 and a bypass hole 33, wherein the first mounting hole 31 is adapted to be connected with the fixing member 40 in cooperation. The flow hole 32 is provided at the outer peripheral side of the first mounting hole 31 and is spaced apart from the first mounting hole 31. The bypass hole 33 is provided at the outer peripheral side of the first mounting hole 31 and is spaced apart from the flow hole 32, i.e., the bypass hole 33 is closer to the edge of the bottom valve seat 30 than the flow hole 32.

[0095] Optionally, the number of the flow hole 32 may be one or more, and there is no specific limitation thereto.

[0096] Optionally, in one embodiment, there are six flow holes 32 , and the six flow holes 32 are arranged at equal intervals in the circumference of the first mounting hole 31 .

[0097] Optionally, the first valve sheet set 20 is arranged on the side of the bottom valve seat 30 facing away from the bottom of the inner cylinder, the first surface 111 of the pressing member 10 faces the first valve sheet set 20 , and the contact portion 122 of the pressing member 10 is suitable for contacting the first valve sheet set 20 .

[0098] Optionally, the first valve plate group 20 includes at least one valve plate, and the valve plate may be a valve plate commonly used in the art, such as various elastic valve plates and combinations thereof, etc., without specific limitation.

[0099] For example, Figure 5 As shown, the first valve plate group 20 includes a first compensation valve plate 21 and a second compensation valve plate 22. The first compensation valve plate 21 and the second compensation valve plate 22 are both provided with a flow groove 211. The position of the flow groove 211 corresponds to the flow hole 32, so that the oil in the upper oil chamber 210 can flow into the flow hole 32 through the flow groove 211, and then flow to the lower oil chamber 220 through the flow hole 32. The diameter of the first compensation valve plate 21 and the second compensation valve plate 22 is preferably large enough to completely cover the bypass hole 33, and there is no specific limitation.

[0100] Optionally, the number and shape of the flow slots 211 are not specifically limited. Figure 5 As shown, the first compensation valve plate 21 is provided with a single U-shaped groove, and the second compensation valve plate 22 is provided with three flow grooves 211 at intervals, and the three flow grooves 211 are provided at equal intervals.

[0101] Optionally, the first valve plate group 20 further includes a clearance valve plate 23 , and the clearance valve plate 23 is arranged between the compensation valve plate and the pressing member 10 .

[0102] Optionally, there is no limit to the number of gap valve plates 23, which are used to adjust the preload force of the pressing member 10. By adjusting the number of gap valve plates 23 to increase or decrease the distance between the pressing member 10 and the compensation valve plate, the preload pressure value of the pressing member 10 and the opening of the pressure plate 12 during reflux can be adjusted.

[0103] Optionally, the first valve disc group 20 further includes a first pre-tightening valve disc 24 , and the first pre-tightening valve disc 24 is disposed between the compensation valve disc and the bottom valve seat 30 .

[0104] Optionally, the diameter of the first preload valve plate 24 is larger than the diameter of the first mounting hole 31, and smaller than the distance between the side of the flow hole 32 away from the first mounting hole 31 and the center of the first mounting hole 31. By adjusting the diameter of the first preload valve plate 24 so that it covers at least part of the flow hole 32 in the thickness direction Z of the pressing member 10, the flow rate of the flow hole 32 during compression can be adjusted.

[0105] Optionally, the mounting portion 11 of the pressing member 10 is provided with a second mounting hole 116 , the second mounting hole 116 corresponds to the first mounting hole 31 , and the fixing member 40 is passed through the second mounting hole 116 .

[0106] Optionally, the bottom valve structure 100 also includes a baffle 50, which is arranged on the side of the clamping member 10 facing away from the bottom valve seat 30, and the fixing member 40 is also passed through the baffle 50 to clamp the clamping member 10 and the first valve plate group 20. At this time, the first surface 111 of the mounting portion 11 contacts the gap valve plate 23, and the second surface 112 contacts the baffle 50.

[0107] Optional, such as Figure 4 and Figure 5 As shown, the fixing member 40 includes a screw 41 and a nut 42. The screw 41 is sequentially arranged through the bottom valve seat 30, the first valve plate group 20, the pressing member 10 and the baffle 50 from the side of the bottom valve seat 30 facing away from the pressing member 10 along the thickness direction Z of the pressing member 10, and is connected and fixed with the nut 42 on the side of the baffle 50 facing away from the pressing member 10. The pre-compression amount of the second valve plate group 60 is adjusted by adjusting the degree to which the screw 41 is screwed into the bottom valve seat 30. The baffle 50 is fixed by the connection between the nut 42 and the screw 41. The pre-compression amount of the pressing member 10 is adjusted by adjusting the degree to which the screw 41 is screwed into the bottom valve seat 30. When the bottom valve structure 100 needs to be disassembled, it is only necessary to loosen the position of the screw 41 and the nut 42, which is convenient for disassembly.

[0108] The bottom valve structure 100 includes a bottom valve seat 30, a first valve plate group 20, a fixing member 40 and a clamping member 10. The first valve plate group 20 is arranged between the bottom valve seat 30 and the clamping member 10. The fixing member 40 is passed through the clamping member 10 to clamp the mounting portion 11 and the first valve plate group 20 to provide a pre-tightening force for the clamping member 10.

[0109] Optionally, the bottom valve seat 30 further includes a second valve sheet set 60 , which is disposed on a side of the bottom valve seat 30 facing away from the pressing member 10 , and the fixing member 40 is further penetrated through the second valve sheet set 60 .

[0110] Optionally, the second valve plate group 60 includes at least one valve plate commonly used in the art, without specific limitation.

[0111] Optionally, the second valve plate assembly 60 includes an adjusting gasket 61, a throttle valve plate 62 and a second preload valve plate 63. The adjusting gasket 61 is disposed between the fixing member 40 and the throttle valve plate 62, and the second preload valve plate 63 is disposed between the throttle valve plate 62 and the bottom valve seat 30.

[0112] Optionally, the adjusting gasket 61 is used for high-speed pressure relief, and its number is determined according to actual needs. When high-speed pressure relief is required, the number of adjusting gaskets 61 can be increased. The throttle valve plate 62 is used to throttle the oil flowing at a low speed, and can adjust the damping force in the low-speed section. The second preload valve plate 63 is used to adjust the opening force value of the clamping member 10.

[0113] Optionally, the second valve plate group 60 further includes a combined valve plate 64. The number of the combined valve plates 64 is determined according to actual needs, and is generally less than ten. The combined valve plates 64 are used to ensure that the shock absorber can generate appropriate damping force during compression, thereby improving the driving stability and comfort of the vehicle.

[0114] Optionally, the diameters of the throttle valve plate 62 and the second pre-tightening valve plate 63 are preferably large enough to completely block the flow hole 32 in the thickness direction Z of the pressing member 10 , and there is no specific limitation thereto.

[0115] By setting the bottom valve seat 30, it also includes a second valve plate group 60, the second valve plate group 60 is arranged on the side of the bottom valve seat 30 facing away from the clamping part 10, and the fixing part 40 is also penetrated through the second valve plate group 60. During the operation of the shock absorber 1000, the second valve plate group 60 cooperates with the first valve plate group 20 to realize the flow of oil between the upper oil chamber 210 and the lower oil chamber 220.

[0116] In the bottom valve structure 100 in the embodiment of the utility model, the bottom valve seat 30 is connected to the inner cylinder of the shock absorber 1000, and the working cylinder oil chamber of the shock absorber 1000 is divided into an upper oil chamber 210 and a lower oil chamber 220. The bottom valve seat 30 includes a first end facing the pressing member 10 and a second end facing away from the pressing member 10. A first valve plate group 20 is arranged between the first end and the pressing member 10. The first valve plate group 20 blocks the bypass hole 33 of the bottom valve seat 30 in the thickness direction Z of the pressing member 10 and exposes the flow hole 32. The first valve plate group 20 and the end face of the bottom valve seat 30 facing the pressing member 10 are opened and closed through the pressing member 10. A second valve plate group 60 is arranged on the side of the bottom valve seat 30 facing away from the pressing member 10. The second valve plate group 60 blocks the flow hole 32 in the thickness direction Z of the pressing member 10, and the second valve plate group 60 and the end face of the second end are opened and closed. The working principle of the bottom valve structure 100 of the shock absorber 1000 is as follows: the flow direction of the oil is as follows: Figure 1 As shown:

[0117] When the working cylinder of the shock absorber 1000 is compressed, the oil pressure of the upper oil chamber 210 increases, making the oil pressure of the upper oil chamber 210 greater than the oil pressure of the lower oil chamber 220, and the oil in the working cylinder flows from the upper oil chamber 210 to the lower oil chamber 220 through the circulation hole 32. After the oil flows into the circulation hole 32, it generates pressure on the second valve plate group 60, so that a gap is generated between the second valve plate group 60 and the end surface of the second end of the bottom valve seat 30, and the oil flows into the lower oil chamber 220. When the working cylinder of the shock absorber 1000 is compressed, the oil pressure of the upper oil chamber 210 decreases, making the oil pressure of the upper oil chamber 210 less than the oil pressure of the lower oil chamber 220, and the oil flows from the lower oil chamber 220 into the bypass hole 33. When the oil pressure is greater than the pressure applied by the pressing member 10 on the first valve plate group 20, the oil pushes the first valve plate group 20 away and flows into the upper oil chamber 210, thereby realizing the oil circulation in the shock absorber 1000.

[0118] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0119] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A pressing member, characterized in that: The pressing piece is used for the bottom valve structure of the shock absorber, and the pressing piece includes: Installation Department; A plurality of pressing plates have one end connected to the mounting portion, and one end of the plurality of pressing plates away from the mounting portion is located on the same side of the mounting portion in the thickness direction, and the pressing plates are elastic components.

2. The pressing member according to claim 1, characterized in that: The plurality of pressure plates are arranged at intervals along the circumferential direction of the mounting portion and extend along the radial direction of the mounting portion.

3. The pressing member according to claim 2, characterized in that: The mounting portion includes a first surface, a second surface and a connecting surface, the second surface is opposite to the first surface, the connecting surface connects the first surface and the second surface, the pressing plate is connected to the connecting surface, and one end of the pressing plate away from the mounting portion is located on the side of the first surface opposite to the second surface.

4. The pressing member according to claim 3, characterized in that: The connection surface includes a first connection surface and a second connection surface that are smoothly connected in a circumferential direction of the mounting portion, the first connection surface is recessed relative to the second connection surface, and the pressing plate is connected to the second connection surface.

5. The pressing member according to claim 1, characterized in that: The end of the pressing plate connected to the mounting portion has a first width D1, and the end of the pressing plate away from the mounting portion has a second width D2, satisfying: D1>D2.

6. The pressing member according to claim 5, characterized in that: The width of the pressing plate gradually increases from an end of the pressing plate away from the mounting portion to an end of the pressing plate connected to the mounting portion.

7. The pressing member according to claim 1, characterized in that: The pressure plate includes a main body and a contact portion, one end of the main body is connected to the mounting portion, the contact portion is smoothly connected to an end of the main body away from the mounting portion, the contact portion includes a contact surface, the contact surface faces away from the mounting portion, and the contact surface is an arc surface.

8. The pressing member according to claim 7, characterized in that: The main body includes a first sub-part and a second sub-part, one end of the first sub-part is connected to the mounting part, and the other end is connected to the second sub-part, an end of the second sub-part away from the first sub-part is connected to the contact part, and the stiffness of the first sub-part is greater than the stiffness of the second sub-part.

9. The pressing member according to any one of claims 1 to 8, characterized in that: The orthographic projection of the pressing member along the thickness direction of the pressing member is a centrally symmetrical structure.

10. A bottom valve structure, characterized in that: It comprises a bottom valve seat, a first valve plate group, a fixing part and a clamping part as claimed in any one of claims 1 to 9, wherein the bottom valve seat is suitable for being connected to the inner tube of the shock absorber, the first valve plate group is arranged between the bottom valve seat and the clamping part, and the fixing part is passed through the clamping part to clamp the mounting portion and the first valve plate group.

11. The bottom valve structure according to claim 10, characterized in that: The bottom valve seat further comprises a second valve sheet group, which is arranged on a side of the bottom valve seat facing away from the pressing member, and the fixing member is further penetrated through the second valve sheet group.

12. A shock absorber, characterized in that: It comprises a cylinder and a bottom valve structure as claimed in any one of claims 10 to 11, wherein the bottom valve structure is connected to the cylinder.

13. A vehicle, characterized in that: It comprises a vehicle body and the shock absorber as claimed in claim 12, wherein the shock absorber is connected to the vehicle body.

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