CN218094019U - Automobile shock absorber ware with self-adaptation bottom valve assembly - Google Patents

Abstract

The application relates to automobile shock absorber ware technical field, more specifically relates to an automobile shock absorber ware with self-adaptation bottom valve assembly, include: the utility model discloses a working cylinder, an oil storage cylinder, a piston rod and a bottom valve assembly, the oil storage cylinder is arranged in to the working cylinder, the one end of piston rod is equipped with the piston assembly, the piston rod is equipped with the one end of piston assembly and is movably arranged in the working cylinder, the bottom valve assembly is located the one end that the working cylinder deviates from the piston rod, the bottom valve assembly includes a spring housing and a first valve block, the spring housing has an inner chamber, a first through-hole has on the diapire of inner chamber, a plurality of second through-hole and an annular boss, the lateral wall of annular boss has an annular groove, annular groove is arranged in to first valve block, and simultaneously, first valve block seals or opens the one end that each second through-hole deviates from the piston rod, the utility model discloses a first valve block seals or opens the second through-hole under different hydraulic pressures and realizes the adjustable advantage of flow along with hydraulic pressure change.

Description

Automobile shock absorber ware with self-adaptation bottom valve assembly

Technical Field

The present application relates to the field of automotive shock absorbers, and more particularly to an automotive shock absorber with an adaptive base valve assembly.

Background

In the double-cylinder automobile shock absorber, shock absorption oil flows between a working cylinder and an oil storage cylinder through a bottom valve assembly.

Patent document (CN 200820087303.1) discloses a bottom valve assembly, including spring housing and bottom valve body, the spring housing has a plurality of first flow hole, the bottom valve body has a plurality of second flow hole, when automobile shock absorber's piston rod to when bottom valve assembly direction moved, the shock attenuation oil in the working cylinder flowed through earlier first flow hole, flow extremely again the second flow hole. The defects are as follows: when the automobile body is shaken and drives the piston rod to act towards the bottom valve assembly, the damping oil flows towards each first flow hole in a very short time, the diameter and the number of each first flow hole are fixed, the passing flow rate is fixed accordingly, if a manufacturer sets too many or too large first flow holes, the probability of cavitation phenomenon is improved because the automobile shock absorber always runs at a large flow rate, the service life of the automobile shock absorber is shortened, and if too few first flow holes are arranged, the automobile shock absorber cannot meet the damping requirement under a specific situation.

Therefore, a need exists for an automotive shock absorber with an adaptive base valve assembly that is flow regulated with hydraulic pressure changes and has a long service life.

Disclosure of Invention

The main aim at of this application provides an automobile shock absorber ware with self-adaptation bottom valve assembly, wherein, automobile shock absorber ware with self-adaptation bottom valve assembly includes a working cylinder, a reserve tank, a piston rod and a bottom valve assembly, the working cylinder is arranged in the reserve tank, the working cylinder with fluid has all been annotated to the reserve tank, the piston rod is arranged in the working cylinder, the bottom valve assembly includes a spring housing and a first valve block, the spring holder has a first through-hole, first valve block with spring housing fixed connection when first valve block is not compressed and deformed, first valve block seals the one end of first through-hole first valve block is after compressed and deformed, first through-hole both ends are link up, the fluid accessible first through-hole through setting first valve block is realized under different hydraulic pressures, the flow of bottom valve assembly is different.

Another object of the application is to provide an automobile shock absorber ware with self-adaptation bottom valve assembly, wherein, the bottom valve assembly still includes an adjusting device and a bottom valve, the one end of bottom valve has a pit, adjusting device includes a moving member, an elastic component, a base, the base is arranged in the pit and with bottom valve fixed connection, the base has a shoulder hole, the one end of moving member is movably located in the shoulder hole, the elastic component is arranged in the shoulder hole, just the both ends of elastic component respectively with the moving member with the bottom valve supports and leans on, works as when the elastic component is not pressed deformation, the moving member is arranged in the first through-hole to make fluid can only pass through the moving member with clearance between the first through-hole flows into the bottom valve assembly, works as the elastic component is pressed deformation, the moving member displacement does not block up the first through-hole, fluid accessible is complete the first through-hole, compare before the moving member does not move, the flow of first through-hole department is bigger, through adjusting device further realizes pressing down at different hydraulic pressures of bottom valve assembly.

Another aim at of this application provides an automobile shock absorber ware with self-adaptation bottom valve assembly, wherein, the both ends of moving member have a atress portion and a draw-in groove respectively, the moving member has the one end of draw-in groove is worn to establish the shoulder hole, adjusting device still includes a jump ring, the jump ring with the draw-in groove joint, the jump ring makes the moving member can not break away from the shoulder hole, the area of contact of moving member and damping oil has been increased to the atress portion.

Another aim at of this application provides an automobile shock absorber ware with self-adaptation bottom valve assembly, wherein, adjusting device still includes a cushion washer, cushion washer is located the jump ring deviates from one side of spring, just cushion washer with the diapire of shoulder hole supports and leans on, cushion washer has avoided the jump ring directly with the base collides, has improved the life of jump ring.

Another object of the present application is to provide an automobile shock absorber with an adaptive base valve assembly, wherein the automobile shock absorber with the adaptive base valve assembly has simple structure, convenient operation, no complicated manufacturing process and expensive materials, high economical efficiency, and easy popularization and use.

In order to achieve at least one of the above objectives, the present application provides an automobile shock absorber with an adaptive bottom valve assembly, including a working cylinder, a reserve cylinder and a piston rod, where the working cylinder is disposed in the reserve cylinder, the working cylinder and the reserve cylinder are both filled with oil, one end of the piston rod is provided with a piston assembly, one end of the piston rod, where the piston assembly is disposed, is movably disposed in the working cylinder, one end of the reserve cylinder, which is away from the piston rod, is provided with a bottom cover, and the bottom cover is fixedly connected to the reserve cylinder, where the automobile shock absorber with the adaptive bottom valve assembly includes:

a bottom valve assembly, the bottom valve assembly is located the working cylinder deviates from the one end of piston rod, just the both ends of bottom valve assembly respectively with the working cylinder with the bottom supports and leans on, the bottom valve assembly includes a spring housing and a first valve block, the spring housing has a cavity, a first through-hole, a plurality of second through-hole and an annular boss have on the diapire of cavity, the lateral wall of annular boss has an annular groove, first valve block is arranged in the annular groove, simultaneously, first valve block seals or opens each the second through-hole deviates from the one end of piston rod.

In one or more embodiments of the present application, the bottom valve assembly further includes an adjusting device and a bottom valve, one end of the bottom valve has a pit, the adjusting device includes a moving member, an elastic member, and a base, the base is disposed in the pit and fixedly connected to the bottom valve, the base has a stepped hole, one end of the moving member is movably disposed in the stepped hole, the elastic member is disposed in the stepped hole, and two ends of the elastic member respectively abut against the moving member and the bottom valve.

In one or more embodiments of this application, the both ends of moving member have a atress portion and a draw-in groove respectively, the moving member has the one end of draw-in groove does the moving member is movably located one end in the shoulder hole, adjusting device still includes a jump ring, the jump ring with the draw-in groove joint.

In one or more embodiments of this application, the elastic component is a spring, the moving member has the one end of draw-in groove still has a lug, the one end of spring with the lug cup joints, the other end of spring with the diapire of pit supports and leans on.

In one or more embodiments of the present application, the adjusting device further includes a cushion washer, the cushion washer is located on a side of the clamp spring away from the elastic member, and the cushion washer abuts against the bottom wall of the stepped hole.

In one or more embodiments of this application, the bottom valve deviates from the one end of pit has a back push face, the bottom valve still has a plurality of third through-hole, the bottom valve assembly still includes a valve block combination and a valve body, the valve body is located the spring housing with between the bottom, the valve block combination has a fourth through-hole, the bottom valve has the one end of back push face wears to establish the fourth through-hole, simultaneously, the both ends of valve block combination respectively with the bottom valve with the valve body supports and leans on, just the valve block combination seals or opens the third through-hole is close to the one end of valve body.

In one or more embodiments of the present application, the foot valve assembly further includes a tower spring, the tower spring is disposed in the cavity of the spring seat, and two ends of the tower spring are respectively and fixedly connected to the bottom wall of the cavity and the foot valve.

In one or more embodiments of this application, the one end that the valve body is close to the bottom has a plurality of stabilizer blade, the stabilizer blade with the bottom supports and leans on, the valve body still has a fifth through-hole, the fifth through-hole with the coaxial setting in fourth through-hole, the valve body deviates from the one end of stabilizer blade with the valve body combination supports and leans on.

In one or more embodiments of this application, the piston assembly includes a piston, the both ends of piston are equipped with a plurality of second valve block and a plurality of third valve block respectively, the piston has the first oilhole and the second oilhole of crossing of a plurality of, the second valve block seals or opens the one end of the first oilhole of crossing and does not seal the second oilhole of crossing, the third valve block seals or opens the second one end of crossing the oilhole and does not seal the first oilhole of crossing.

In one or more embodiments of the present application, the shock absorber with the adaptive bottom valve assembly further includes an upper spring seat, a lower spring seat and a return spring, the upper spring seat is fixedly connected to the piston rod, the lower spring seat is fixedly connected to the oil storage cylinder, and two ends of the return spring respectively abut against the upper spring seat and the lower spring seat.

In the embodiment of the application, the spring cover is provided with a first through hole and a second through hole, one end of the second through hole is selectively sealed by the first valve plate, the first through hole is selectively partially sealed by an adjusting device, and after the hydraulic pressure value reaches a preset value, the first valve plate is opened and does not seal the second through hole any more or after the first valve plate is opened, the adjusting device also works at the same time and does not seal the first through hole any more; the moving piece is provided with a clamping groove, the clamp spring is arranged in the clamping groove, and the moving piece is prevented from falling off the stepped hole through the clamp spring; a buffer washer is arranged between the clamp spring and the bottom wall of the stepped hole in the moving member, the clamp spring is prevented from directly colliding with the bottom wall of the stepped hole through the buffer washer, a third through hole is formed in the bottom valve, a valve plate combination is arranged at one end of the third through hole, and the third through hole is selectively closed through the valve plate combination to control the circulation of oil between the working cylinder and the oil storage cylinder; the tower spring is respectively and fixedly connected with the bottom valve and the spring seat, and the bottom valve is reset through the resilience characteristic of the tower spring after being pressed; the piston assembly is movably arranged in the working cylinder, and oil liquid circulation of different chambers of the working cylinder is controlled through the piston assembly.

Drawings

These and/or other aspects and advantages of the present application will become more apparent and more readily appreciated from the following detailed description of the embodiments of the present application, taken in conjunction with the accompanying drawings of which:

FIG. 1 illustrates a schematic structural view of an automotive shock absorber with an adaptive base valve assembly.

FIG. 2 illustrates a schematic structural view of the base valve assembly.

Fig. 3 illustrates a structural schematic of the spring seat.

Fig. 4 illustrates an enlarged view at D of fig. 3.

Fig. 5 illustrates an enlarged view at C of fig. 2.

Fig. 6 illustrates a schematic view of the bottom valve.

Fig. 7 illustrates a schematic of the construction of the piston assembly.

In the figure: 10 working cylinder, 20 oil storage cylinder, 30 piston rod, 40 piston assembly, 50 bottom cover, 60 oil seal guide assembly, 70 bottom valve assembly, 101 first cavity, 201 second cavity, 401 piston, 402 second valve plate, 403 third valve plate, 701 spring cover, 702 first valve plate, 703 adjusting device, 704 bottom valve, 705 valve plate assembly, 706 valve body, 707 tower spring, 801 upper spring seat, 802 lower spring seat, 803 reset spring, 4011 first oil passing hole, 4012 second oil passing hole, 7011 concave cavity, 7031 moving part, 7032 elastic part, 7033 base, 7034 snap spring, 7035 buffer washer, 7041 concave pit, 7042 third through hole, 7051 fourth through hole, 7061 support leg, 7062 fifth through hole, 70111 first through hole, 70112 second through hole, 70113 annular boss, 70311 force bearing part, 70312 clamping groove, 70312 stepped hole, 70411 push back surface, annular groove 70113a, L1 first oil passing hole central axis distance to piston central axis, L2 oil passing hole distance to piston central axis distance.

Detailed Description

The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventors to enable a clear and consistent understanding of the application. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present application are provided for illustration only and not for the purpose of limiting the application as defined by the appended claims and their equivalents.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

While ordinal numbers such as "first", "second", etc., will be used to describe various components, those components are not limited thereto. The term is used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the teachings of the inventive concepts. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

Summary of the application

According to the existing bottom valve assembly, the diameter and the number of each first flow hole are fixed, the passing flow rate of the first flow holes is also fixed, if a manufacturer sets too many or too big first flow holes, the probability of cavitation is improved because an automobile shock absorber always operates at a large flow rate, the service life of the automobile shock absorber is shortened, and if too few first flow holes are set, the automobile shock absorber cannot meet the shock absorption requirement under a specific situation. Based on the technical problem, the application provides an automobile shock absorber ware with self-adaptation bottom valve assembly, wherein, automobile shock absorber ware with self-adaptation bottom valve assembly simple structure does not relate to complicated manufacturing process and expensive material, has higher economic nature, simultaneously, to manufacturer, the automobile shock absorber ware with self-adaptation bottom valve assembly that this application provided is easily produced, and low cost, more is favorable to controlling manufacturing cost, further is favorable to the product popularization and use.

An exemplary vehicle shock absorber with an adaptive base valve assembly,

referring to fig. 1 to 7, according to a preferred embodiment of the present invention, the shock absorber with adaptive bottom valve assembly of the present invention is shown in fig. 1, wherein the shock absorber with adaptive bottom valve assembly of the present invention comprises a working cylinder 10, a reserve cylinder 20 and a piston rod 30, the working cylinder 10 is disposed in the reserve cylinder 20, the working cylinder 10 and the reserve cylinder 20 are filled with oil, one end of the piston rod 30 is provided with a piston assembly 40, the piston assembly 40 is fixedly connected to the piston rod 30, the fixed connection is not limited to a threaded connection, one end of the piston rod 30 provided with the piston assembly 40 is movably disposed in the working cylinder 10, one end of the reserve cylinder 20 away from the piston rod 30 is provided with a bottom cover 50, the bottom cover 50 is fixedly connected to the reserve cylinder 20, and the fixed connection is further implemented by welding.

Specifically, as shown in FIG. 1, working cylinder 10 has a first chamber 101, reserve cylinder 20 has a second chamber 201, and both working cylinder 10 and reserve cylinder 20 are preferably cylindrical. It should be noted that the diameter of the first cavity 101 is smaller than the diameter of the second cavity 201, so that the working cylinder 10 is disposed in the reserve cylinder 20. It should be noted that the length of the second cavity 201 is greater than the length of the first cavity 101.

Specifically, as shown in fig. 1, an end of the working cylinder 10 away from the bottom cover 50 is provided with an oil seal guide assembly 60, the oil seal guide assembly 60 abuts against the working cylinder 10, and meanwhile, the oil seal guide assembly 60 is further disposed in the second cavity 201 and abuts against the oil storage cylinder 20. The oil seal guiding assembly 60 has a through hole, and the end of the piston rod 30 having the piston assembly 40 is disposed through the through hole and movably disposed in the first cavity 101. The oil seal guide assembly 60 and the bottom cover 50 close both ends of the reserve tube 20.

It should be noted that the maximum diameter of the piston assembly 40 is the same as the diameter of the working cylinder 10, and after the end of the piston rod 30 provided with the piston assembly 40 penetrates through the through hole and is arranged in the first cavity 101, the end of the oil storage cylinder 20 provided with the oil seal guide assembly 60 is curled, so that the end of the oil seal guide assembly 60 abuts against the oil storage cylinder 20.

Further, as shown in fig. 1, the vehicle shock absorber with the adaptive bottom valve assembly further includes a bottom valve assembly 70, the bottom valve assembly 70 is located at an end of the cylinder 10 away from the piston rod 30, and two ends of the bottom valve assembly 70 respectively abut against the cylinder 10 and the bottom cover 50, as shown in fig. 2, fig. 3 and fig. 4, the bottom valve assembly 70 includes a spring cover 701 and a first valve plate 702, the spring cover 701 has a cavity 7011, the bottom wall of the cavity 7011 has a first through hole 70111, a plurality of second through holes 70112 and an annular boss 70113, a side wall of the annular boss 70113 has an annular groove 70113A, the first valve plate 702 is located in the annular groove 70113A, and at the same time, the first valve plate 702 closes or opens an end of each of the second through holes 70112 away from the piston rod 30. The first valve plate 702 is clamped with the annular groove 70113A, and the first valve plate 702 can be further welded with the spring cover 701 partially after being clamped with the annular groove 70113A.

It should be noted that, when the hydraulic pressure applied to the first valve plate 702 from the piston rod 30 direction exceeds a predetermined value, the edge area of the first valve plate 702 bends toward the bottom cover 50 direction by a predetermined angle, and two ends of the second through hole 70112 are made to penetrate, so that the oil liquid disposed outside the spring cover 701 can flow into the bottom valve assembly 70 through the second through hole 70112.

Further, as shown in fig. 2, 5 and 6, the bottom valve assembly 70 further includes an adjusting device 703 and a bottom valve 704, one end of the bottom valve 704 has a concave 7041, the adjusting device 703 includes a moving member 7031, an elastic member 7032 and a base 7033, the base 7033 is disposed in the concave 7041 and is fixedly connected to the bottom valve 704, the base 7033 has a stepped hole 70331, a larger diameter hole of the stepped hole 70331 is disposed at an end of the stepped hole 70331 close to the elastic member 7032, one end of the moving member 7031 is movably disposed in the stepped hole 70331, the elastic member 7032 is disposed in the stepped hole 70331, and two ends of the elastic member 7032 abut against the moving member 7031 and the bottom valve 704, respectively.

Specifically, as shown in fig. 5, two ends of the moving member 7031 are respectively provided with a stressed portion 70311 and a locking groove 70312, one end of the moving member 7031, which is provided with the locking groove 70312, penetrates through the stepped hole 70331, that is, one end of the moving member 7031, which is provided with the locking groove 70312, is one end of the moving member 7031, which is movably disposed in the stepped hole 70331, the stressed portion 70311 is disposed in the first through hole 70111, the adjusting device 703 further includes a locking spring 7034, and the locking spring 7034 is locked with the locking groove 70312.

It should be noted that the maximum diameter of the stressed portion 70311 is smaller than the diameter of the first through hole 70111, the diameter of the snap spring 7034 is smaller than the diameter of the hole with the larger diameter of the stepped hole 70331, and the diameter of the snap spring 7034 is larger than the diameter of the hole with the smaller diameter of the stepped hole 70331. Therefore, when the moving part 7031 is displaced to the bottom wall of the hole with the larger diameter of the stepped hole 70331, the snap spring 7034 abuts against the bottom wall of the hole with the larger diameter of the stepped hole 70331, and the moving part 7031 is no longer displaced toward the piston rod 30.

In order to prevent the snap spring 7034 from colliding with the wall surface of the stepped hole 70331 when the moving member 7031 moves toward the piston rod 30, as shown in fig. 5, the adjusting device 703 further includes a cushion washer 7035, the cushion washer 7035 is located on a side of the snap spring 7034 away from the elastic member, and the cushion washer 7035 abuts against the bottom wall of the stepped hole 70331. Due to the existence of the buffer washer 7035, the service life of the snap spring 7034 is prolonged, and the risk of failure of the adjusting device 703 caused by failure of the snap spring 7034 is further prevented.

Specifically, the elastic element 7032 is a spring, the end surface of the moving element 7031 having one end of the locking slot 70312 further has a protrusion, one end of the spring is sleeved with the protrusion, and the other end of the spring abuts against the bottom wall of the concave slot 7041.

It should be noted that, when the hydraulic strength of the moving part 7031 from the piston rod 30 direction is higher than a predetermined value, the moving part 7031 may displace toward the bottom cover 50 direction and compress the elastic part 7032, at this time, the force-receiving part 70311 is no longer disposed in the first through hole 70111, and the oil flow at the first through hole 70111 is increased. Previously, because the stressed portion 70311 is disposed in the first through hole 70111, the oil from the piston rod 30 can only flow into the bottom valve assembly 70 along the annular gap between the stressed portion 70311 and the first through hole 70111, and when the stressed portion 70311 moves toward the bottom cover 50 and does not partially block the first through hole 70111, the oil from the piston rod 30 can completely pass through the first through hole 70111 and flow into the bottom valve assembly 70.

Further, as shown in fig. 6, one end of the bottom valve 704, which is away from the pit 7041, is provided with a push-back surface 70411, the bottom valve 704 is further provided with a plurality of third through holes 7042, as shown in fig. 2, the bottom valve assembly 70 further includes a valve plate assembly 705 and a valve body 706, the valve body 706 is located between the spring cover 701 and the bottom cover 50, the valve plate assembly 705 is provided with a fourth through hole 7051, one end of the bottom valve 704, which is provided with the push-back surface 70411, is inserted into the fourth through hole 7051, meanwhile, two ends of the valve plate assembly 705 are respectively abutted against the bottom valve 704 and the valve body 706, and the valve plate assembly 705 closes or opens one end of the third through hole 7042, which is close to the valve body 706.

It should be noted that, when the oil liquid flowing into the bottom valve assembly 70 flows into the third through hole 7042, the valve plate assembly 705 is subjected to a hydraulic acting force and is locally deformed, more specifically, because two ends of the valve plate assembly 705 abut against the bottom valve 704 and the valve body 706 respectively, a sheet body region of the valve body 706 assembly, which is close to the fourth through hole 7051, is bent by a predetermined angle toward the bottom cover 50, and at this time, one end of the third through hole 7042, which is close to the valve body 706, is no longer closed by the valve plate assembly 705, and the oil liquid flowing into the third through hole 7042 can flow to the valve body 706 along a gap.

Specifically, as shown in fig. 2, the base valve assembly 70 further includes a tower spring 707, the tower spring 707 is disposed in the cavity 7011 of the spring housing 701, and two ends of the tower spring 707 are fixedly connected to the bottom wall of the cavity 7011 and the base valve 704, respectively, and the fixing manner is not limited to welding.

Specifically, as shown in fig. 2, one end of the valve body 706 close to the bottom cover 50 is provided with a plurality of support legs 7061, the support legs 7061 abut against the bottom cover 50, the valve body 706 is further provided with a fifth through hole 7062, the fifth through hole 7062 and the fourth through hole 7051 are coaxially arranged, and one end of the valve body 706 away from the support legs 7061 abuts against the valve body 706 in a combined manner. It should be noted that when the valve body 706 is deformed by pressure, the oil flows from the third through hole 7042 to the fifth through hole 7062, then flows from the fifth through hole 7062 to the gap between the supporting legs 7061, and flows into the reservoir 20 along the bottom wall of the bottom cover 50.

Further, as shown in fig. 7, the piston assembly 40 includes a piston 401, a plurality of second valve plates 402 and a plurality of third valve plates 403, two ends of the piston 401 are respectively provided with the second valve plate 402 and the third valve plates 403, the piston 401 has a plurality of first oil passing holes 4011 and a plurality of second oil passing holes 4012, the second valve plate 402 seals or opens one end of the first oil passing holes 4011 and does not seal the second oil passing holes 4012, and the third valve plate 403 seals or opens one end of the second oil passing holes 4012 and does not seal the first oil passing holes 4011. Further, the second valve plate 402 closes one end of the first oil passing hole 4011 close to the oil seal guide assembly 60, and the third valve plate 403 closes one end of the second oil passing hole 4012 close to the bottom cover 50. Note that, when the second valve plate 402 closes one end of the first oil passing hole 4011, the second oil passing hole 4012 is not closed; the third valve sheet 403 does not close the first oil passing holes 4011 while closing one end of the second oil passing holes 4012. Specifically, as shown in fig. 7, the first oil passing hole 4011 surrounds the second oil passing hole 4012 and is disposed at the periphery of the second oil passing hole 4012, a distance from a central axis of the first oil passing hole 4011 to a central axis of the piston 401 is L1, a distance from a central axis of the second oil passing hole 4012 to a central axis of the piston 401 is L2, wherein L1 is greater than L2, a diameter of the third valve plate 403 is greater than L2, meanwhile, a diameter of the third valve plate 403 is less than L1, a diameter of the second valve plate 402 is greater than L1, and meanwhile, the second valve plate 402 is provided with a sixth through hole which is communicated with the second oil passing hole 4012.

Further, as shown in fig. 1, the shock absorber with the adaptive base valve assembly further includes an upper spring seat 801, a lower spring seat 802 and a return spring 803, the upper spring seat 801 is fixedly connected to the piston rod 30, the lower spring seat 802 is fixedly connected to the reserve tube 20, and two ends of the return spring 803 are respectively abutted to the upper spring seat 801 and the lower spring seat 802.

The operation of the vehicle shock absorber and the base valve assembly 70 will now be described.

The working principle of the automobile shock absorber is explained firstly: when the piston rod 30 moves towards the bottom cover 50, the volume of the first cavity 101 (hereinafter referred to as "lower cavity" for convenience of understanding by a reader) between the piston 401 and the bottom valve assembly 70 is reduced, the volume of the first cavity 101 (hereinafter referred to as "upper cavity" for convenience of understanding by a reader) between the piston 401 and the oil seal guide assembly 60 is increased, at this time, the return spring 803 is compressed, because the hydraulic pressure in the lower cavity is greater than that in the upper cavity, the second valve plate 402 is bent towards the oil seal guide assembly 60 by a predetermined angle, and two ends of the first oil passing hole 4011 are respectively communicated with the upper cavity and the lower cavity, and a part of the oil placed in the lower cavity flows into the first oil passing hole 4011 and flows into the upper cavity from the first oil passing hole 4011, so as to generate a damping force; another portion of the oil disposed in the lower chamber flows into base valve assembly 70 and from base valve assembly 70 into reserve tube 20, generating a damping force.

When the piston rod 30 moves towards the oil seal guide assembly 60, the volume of the upper cavity becomes smaller, the volume of the lower cavity becomes larger, and at this time, the return spring 803 rebounds, so that the hydraulic pressure in the upper cavity is greater than the hydraulic pressure in the lower cavity, and meanwhile, the hydraulic pressure in the reserve cylinder 20 is greater than the hydraulic pressure in the lower cavity, then: the third valve plate 403 is bent to the bottom cover 50 by a predetermined angle, and both ends of the second oil passing hole 4012 are respectively communicated with the upper cavity and the lower cavity, so that oil in the upper cavity flows into the second oil passing hole 4012, and flows into the lower cavity from the second oil passing hole 4012, thereby generating a damping force; the oil in the reserve tube 20 enters the base valve assembly 70 through the gap of the support 7061 and flows from the base valve assembly 70 to the lower chamber, generating a damping force.

The operation of the base valve assembly 70 will be described as follows: when the hydraulic pressure of the lower cavity is higher than that of the reservoir 20 but still at a lower level, the valve plate assembly 705 bends to the bottom cover 50 by a predetermined angle, the oil in the lower cavity flows from the annular gap between the first through hole 70111 and the stressed portion 70311 to the third through hole 7042, then flows from the third through hole 7042 to the fifth through hole 7062, and then flows from the fifth through hole 7062 to the reservoir 20 through the gap of the supporting leg 7061; when the hydraulic strength of the lower cavity is at a medium level, the first valve plate 702 is bent towards the bottom cover 50 by a predetermined angle except that the valve body 706 is combined and bent towards the base by a predetermined angle, at this time, two ends of the second through hole 70112 are communicated, and oil in the lower cavity can flow to the third through hole 7042 through the annular gap at the first through hole 70111 and also can flow to the third through hole 7042 through the second through hole 70112; when the hydraulic strength of the lower cavity is at a high level, not only the valve body 706 assembly and the first valve plate 702 deform, but also the moving member 7031 moves toward the bottom cover 50, so that the moving member 7031 does not shield the first through hole 70111, and at the moment, the oil can completely pass through the first through hole 70111 and flow into the third through hole 7042.

When the hydraulic pressure of the lower cavity is lower than the hydraulic pressure of the reserve tube 20, the push-back surface 70411 of the bottom valve 704 is stressed, the oil liquid arranged in the fifth through hole 7062 pushes the bottom valve 704 to displace a predetermined distance in the direction of the piston rod 30, at this time, the tower spring 707 is in a compressed state, the third through hole 7042 is no longer abutted against the valve plate combination 705, and the oil liquid can flow to the lower cavity from the third through hole 7042.

It should be noted that, in order to realize the actions of the valve plate assembly 705, the first valve plate 702 and the adjusting device 703 under different hydraulic strengths, the actions can be realized by implementing different elastic materials or increasing or decreasing the thickness and the diameter on the elastic member 7032 of the valve plate assembly 705, the first valve plate 702 and the adjusting device 703. In this embodiment, the material of the valve plate assembly 705 is preferably beryllium bronze, the material of the first valve plate 702 is preferably 65Mn, and the material of the elastic member 7032 is preferably 60Si2Mn, so that the first valve plate 702 is more easily deformed than the elastic member 7032, and the valve plate assembly 705 is more easily deformed than the first valve plate 702, so that the automobile shock absorber with the adaptive bottom valve assembly always operates at a more appropriate flow rate during operation, thereby reducing the risk of cavitation and prolonging the service life of the automobile shock absorber.

In summary, the automobile shock absorber with the adaptive base valve assembly based on the embodiment of the present application is illustrated, which provides the automobile shock absorber with the adaptive base valve assembly with the advantages of adjustable flow rate along with hydraulic pressure change, long service life and the like.

It is worth mentioning that, in the embodiment of the present application, the vehicle shock absorber with the adaptive base valve assembly has a simple structure, does not involve a complicated manufacturing process and expensive materials, and has high economical efficiency. Simultaneously, to the manufacture factory, the automobile shock absorber ware that has self-adaptation bottom valve assembly that this application provided easily produces, and low cost more is favorable to controlling manufacturing cost, further is favorable to the product to be promoted and uses.

It will be understood by those skilled in the art that the embodiments of the present invention described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention can be modified or altered without departing from the principles.

Claims (10)

1. The utility model provides an automobile shock absorber ware with self-adaptation bottom valve assembly, includes a working cylinder, an oil storage cylinder and a piston rod, the working cylinder is arranged in the oil storage cylinder, the working cylinder with oil has all been annotated to the oil storage cylinder, the one end of piston rod is equipped with the piston assembly, the piston rod is equipped with the one end of piston assembly is movably arranged in the working cylinder, the oil storage cylinder deviates from the one end of piston rod is equipped with a bottom, the bottom with oil storage cylinder fixed connection, its characterized in that: the automobile shock absorber with the self-adaptive bottom valve assembly further comprises:

a bottom valve assembly, the bottom valve assembly is located the working cylinder deviates from the one end of piston rod, just the both ends of bottom valve assembly respectively with the working cylinder with the bottom supports and leans on, the bottom valve assembly includes a spring cover and a first valve block, the spring cover has a cavity, a first through-hole, a plurality of second through-hole and an annular boss have on the diapire of cavity, the lateral wall of annular boss has an annular groove, first valve block is arranged in the annular groove, simultaneously, first valve block seals or opens each the second through-hole deviates from the one end of piston rod.

2. The shock absorber for vehicle with self-adaptive bottom valve assembly as set forth in claim 1, wherein: the bottom valve assembly further comprises an adjusting device and a bottom valve, a pit is formed in one end of the bottom valve, the adjusting device comprises a moving member, an elastic member and a base, the base is arranged in the pit and fixedly connected with the bottom valve, the base is provided with a stepped hole, one end of the moving member is movably arranged in the stepped hole, the elastic member is arranged in the stepped hole, and two ends of the elastic member are respectively abutted against the moving member and the bottom valve.

3. The shock absorber with adaptive base valve assembly for vehicle as claimed in claim 2, wherein: the two ends of the moving piece are respectively provided with a stress part and a clamping groove, one end of the moving piece, which is provided with the clamping groove, is the end of the moving piece, which is movably arranged in the stepped hole, and the adjusting device further comprises a clamp spring, and the clamp spring is clamped with the clamping groove.

4. The vehicle shock absorber with the adaptive base valve assembly as set forth in claim 3, wherein: the elastic part is a spring, one end of the moving part, which is provided with the clamping groove, is also provided with a convex block, one end of the spring is sleeved with the convex block, and the other end of the spring is abutted against the bottom wall of the pit.

5. The vehicle shock absorber with the adaptive base valve assembly as set forth in claim 3, wherein: adjusting device still includes a cushion ring, cushion ring is located the jump ring deviates from one side of elastic component, just cushion ring with the diapire of shoulder hole supports and leans on.

6. The shock absorber for vehicle with adaptive base valve assembly according to any one of claims 2 to 5, wherein: the bottom valve assembly further comprises a valve block assembly and a valve body, the valve body is located between the spring cover and the bottom cover, the valve block assembly is provided with a fourth through hole, one end, provided with the push-back face, of the bottom valve penetrates through the fourth through hole, meanwhile, two ends of the valve block assembly respectively abut against the bottom valve and the valve body, and the valve block assembly is closed or opened to enable the third through hole to be close to one end of the valve body.

7. The shock absorber with adaptive base valve assembly for vehicle as claimed in claim 6, wherein: the bottom valve assembly further comprises a tower spring, the tower spring is arranged in the concave cavity of the spring seat, and two ends of the tower spring are fixedly connected with the bottom wall of the concave cavity and the bottom valve respectively.

8. The shock absorber with adaptive base valve assembly for vehicle as claimed in claim 6, wherein: the valve body is provided with a plurality of support legs at one end close to the bottom cover, the support legs are abutted against the bottom cover, the valve body is further provided with a fifth through hole, the fifth through hole and the fourth through hole are coaxially arranged, and one end of the valve body, which deviates from the support legs, is abutted against the valve body in a combined mode.

9. The shock absorber with adaptive base valve assembly for vehicle as claimed in claim 1, wherein: the piston assembly comprises a piston, a plurality of second valve plates and a plurality of third valve plates are arranged at the two ends of the piston respectively, the piston is provided with a plurality of first oil passing holes and a plurality of second oil passing holes, the second valve plates are closed or opened, one ends of the first oil passing holes are not closed, the second oil passing holes are closed, and the third valve plates are closed or opened, one ends of the second oil passing holes are not closed, and the first oil passing holes are formed.

10. The shock absorber with adaptive base valve assembly for vehicle as claimed in claim 1, wherein: the automobile shock absorber with the self-adaptive bottom valve assembly further comprises an upper spring seat, a lower spring seat and a return spring, the upper spring seat is fixedly connected with the piston rod, the lower spring seat is fixedly connected with the oil storage cylinder, and two ends of the return spring are respectively abutted to the upper spring seat and the lower spring seat.

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