CN217977158U

CN217977158U - Automobile shock absorber with filtering device

Info

Publication number: CN217977158U
Application number: CN202222095909.2U
Authority: CN
Inventors: 陈章龙
Original assignee: NINGBO JINCHENG SHOCK ABSORBER CO Ltd
Current assignee: NINGBO JINCHENG SHOCK ABSORBER CO Ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-12-06
Anticipated expiration: 2032-08-10

Abstract

The application relates to automobile shock absorber ware technical field, more specifically relates to an automobile shock absorber ware of taking filter equipment, include: the oil storage cylinder is arranged in the oil storage cylinder, one end of the piston rod is movably arranged in the working cylinder, the bottom valve assembly and the bottom cover are both positioned at one end of the oil storage cylinder, which is far away from the piston rod, the bottom cover is provided with a containing hole, and one end of the bottom cover, which is provided with the containing hole, is connected with the oil storage cylinder; filter equipment includes the first magnetite of annular base and a plurality of, and it is downthehole that the holding is arranged in to annular base, and annular base's both ends lean on with the diapire in bottom valve assembly and holding hole respectively, and annular base has a plurality of opening, and each opening all is equipped with the filter screen, and the damping oil in oil storage jar and the working cylinder circulates each other through the opening, and first magnetite is installed on annular base's lateral wall, the utility model discloses can realize effectively reducing cavitation harm, long service life's advantage through effectively utilizing its self structural configuration.

Description

Automobile shock absorber with filtering device

Technical Field

The application relates to the field of automobile shock absorbers, in particular to an automobile shock absorber with a filtering device.

Background

When the vehicle runs on a bump, a piston rod in the automobile shock absorber continuously makes telescopic motion in a cylinder body, and shock absorption oil in the cavity continuously flows back and forth in the cavities to generate damping force so as to achieve the shock absorption effect. When the automobile shock absorber works, shock absorption media such as shock absorption oil flow into the oil passing hole at the bottom valve assembly at a high speed in a very short time, and the pressure at the oil passing hole is rapidly reduced according to Bernoulli principle. When the pressure is lower than the saturated vapor pressure of the shock-absorbing oil, the shock-absorbing oil is vaporized and forms bubbles. The saturated vapor pressure means that the vapor pressure of the shock absorbing oil is stabilized at a fixed value at a certain temperature in a limited closed space, and this value is referred to as the saturated vapor pressure of the shock absorbing oil at that temperature. When the shock attenuation oil from cross the oilhole after flowing out, pressure rises again, and the bubble that just formed will break to produce extremely strong local pressure, cause destruction to the metalwork surface of bottom valve assembly department, cavitation phenomenon promptly, and produce tiny metal particle, metal particle can be along with the shock attenuation oil flows at different cavities repeatedly, and aggravation automobile shock absorber's wearing and tearing, and very big degree has reduced automobile shock absorber's life.

Therefore, a need exists for a long-life automotive shock absorber with a filter device that effectively reduces the risk of cavitation.

SUMMERY OF THE UTILITY MODEL

The main objective of the present application is to provide an automobile shock absorber with a filtering device, wherein the automobile shock absorber with the filtering device includes a working cylinder, an oil storage cylinder, a piston rod, a bottom cover and a filtering device, the working cylinder is disposed in the oil storage cylinder, one end of the piston rod is inserted into the working cylinder, the bottom cover has a containing hole, one end of the bottom cover having the containing hole is fixedly connected to one end of the oil storage cylinder deviating from the piston rod, the filtering device includes an annular base and a plurality of first magnets, the annular base is disposed in the containing hole, and two ends of the annular base are respectively abutted to the bottom valve assembly and the bottom wall of the containing hole, the annular base has a plurality of circulation holes, one end of each circulation hole is provided with a filter screen, the damping oil in the oil storage cylinder and the working cylinder circulates through the circulation holes, the first magnets are mounted on the outer side wall of the annular base, and absorb the small metal debris passing through the filter screen, so that the metal debris is retained inside the oil storage cylinder; quilt the small metal debris accumulation of first magnetite absorption is great large size metal debris, through the filter screen makes and has formed great large size metal debris and be difficult to the rethread in the oil storage jar the filter screen flows to in the working cylinder, it is right to have avoided metal debris the scratch of working cylinder inner wall has improved automobile shock absorber's life.

Another objective of the present application is to provide an automobile shock absorber with a filtering device, wherein the filtering device includes an annular base and a plurality of first magnets, the annular base has a plurality of first mounting grooves, and the first magnets are disposed in the first mounting grooves; take filter equipment's automobile shock absorber ware still includes a second magnetite, the second magnetite is arranged in the side of holding the hole, through first magnetite with the second magnetite will pass through the metal debris of filter screen adsorbs, makes metal debris no longer continues to flow and scratch cylinder body inner wall along with damping oil.

Another object of the present application is to provide a take filter equipment's automobile shock absorber ware, wherein, the side in holding hole has an annular groove, take filter equipment's automobile shock absorber ware still includes a loop forming element, the loop forming element is arranged in the annular groove, the loop forming element has a second mounting groove, the second magnetite is arranged in the second mounting groove, the material of annular base is plastics, the material of loop forming element is plastics, in order to avoid first magnetite magnetization the annular base, in order to avoid the second magnetite magnetization the loop forming element. Another object of the present application is to provide an automobile shock absorber with a filter device, wherein the automobile shock absorber with the filter device has a simple structure, is convenient to operate, does not involve complicated manufacturing processes and expensive materials, has high economical efficiency, and is easy to popularize and use.

In order to achieve at least one of the above objectives, the present application provides an automobile shock absorber with a filtering device, including a working cylinder, a reserve cylinder, a piston rod and a bottom valve assembly, wherein the working cylinder is disposed inside the reserve cylinder, the working cylinder and the reserve cylinder are filled with damping oil, one end of the piston rod is provided with the piston assembly, one end of the piston rod, which is provided with the piston assembly, is movably disposed in the working cylinder, and the bottom valve assembly is disposed at one end of the reserve cylinder, which is away from the piston rod, wherein the automobile shock absorber with the filtering device further includes:

the bottom cover is positioned at one end of the oil storage cylinder, which is far away from the piston rod, the bottom cover is provided with a containing hole, and one end of the bottom cover, which is provided with the containing hole, is fixedly connected with the oil storage cylinder; and

a filter equipment, filter equipment includes the first magnetite of an annular base and a plurality of, annular base arranges in the holding is downthehole, just annular base's both ends respectively with the bottom valve assembly with the diapire in holding hole supports and leans on, annular base is last to have a plurality of opening, each the one end in opening all is equipped with a filter screen, the oil storage jar with in the working cylinder damping oil passes through the opening circulates each other, first magnetite is installed on annular base's the lateral wall.

In one or more embodiments of the present application, the bottom valve assembly has a valve body at an end close to the bottom cover, a first mounting hole is formed at a side of the valve body close to the bottom cover, a second mounting hole is formed at a bottom wall of the accommodating hole, and two ends of the annular base are respectively disposed in the first mounting hole and the second mounting hole.

In one or more embodiments of the present application, the annular base has a third through hole, the third through hole penetrates through the top wall and the bottom wall of the annular base, a side of the annular base away from the third through hole has a plurality of extending ends, the extending ends are fixedly connected to the annular base, each extending end corresponds to one of the flow holes, each flow hole penetrates through the corresponding extending end, and meanwhile, each flow hole is communicated with the third through hole.

In one or more embodiments of the present application, the filter device further includes a plurality of pressing plates, the pressing plates correspond to the extending ends one to one, each pressing plate is riveted to a top wall of the corresponding extending end, the filter screen is disposed between the extending end and the pressing plate, each pressing plate has a fifth through hole, and the fifth through hole is opposite to the through hole.

In one or more embodiments of the present application, a plurality of first mounting grooves are formed in an outer side wall of the annular base, the first mounting grooves are located at a joint of the extending end and the annular base, and the first magnet is disposed in the first mounting grooves.

In one or more embodiments of the present application, a side surface of the receiving hole has an annular groove, and the automobile shock absorber with a filter device further includes a ring member disposed in the annular groove, the ring member having a second mounting groove, and a second magnet disposed in the second mounting groove.

In one or more embodiments of the present application, the annular base and the annular member are both made of plastic.

In one or more embodiments of this application, the piston assembly includes a piston, the piston has a plurality of first oilholes and a plurality of second oilholes of crossing, the both ends of piston are equipped with first valve block of a plurality of and a plurality of second valve block respectively, first valve block with the second valve block all with the piston supports and leans on, simultaneously, first valve block seals the one end of first oilhole of crossing, the second valve block seals the one end of second oilhole, just first valve block does not seal the second oilhole of crossing, the second valve block does not seal the first oilhole of crossing.

In one or more embodiments of this application, the bottom valve assembly still includes a spring housing, a bottom valve and a valve body, the spring housing is located the working cylinder deviates from the one end of piston rod, the spring housing supports and leans on the working cylinder and seals the one end of working cylinder, the spring housing has an inner chamber, the bottom valve with the valve body is all arranged in the inner chamber, just the bottom valve is located the valve body deviates from one side of bottom, the bottom valve with still have a valve block combination including a plurality of third valve block between the valve body, the both ends of valve block combination respectively with the bottom valve with the valve body supports and leans on.

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 inner cavity, and two ends of the tower spring are respectively fixedly connected to the bottom wall of the inner cavity and the foot valve.

In the embodiment of the present application, the metal debris accompanying the flow of the damping oil is sucked by the first magnet and the second magnet; the magnetization is explained and larger metal fragments are formed, and the magnetized metal fragments with larger particles are further prevented from flowing from the oil storage cylinder to the working cylinder through a filter screen; because the annular base and the annular piece are made of plastics, the first magnet and the second magnet are prevented from magnetizing the annular base and the annular piece; by placing the filter screen between the pressure plate and the top wall of the annular base while riveting the pressure plate and the annular base, the filter screen does not separate from the annular base.

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 a shock absorber for a vehicle with a filter device.

Fig. 2 illustrates a full sectional view of the bottom cover.

FIG. 3 illustrates a full sectional view of the piston assembly.

FIG. 4 illustrates a full section view of the base valve assembly.

Fig. 5 illustrates a schematic view of the structure of the filter device.

Fig. 6 illustrates an exploded view of the filter device.

Fig. 7 illustrates an enlarged view at D of fig. 6.

Fig. 8 illustrates an enlarged view at C of fig. 1.

Fig. 9 illustrates a damper oil flow direction diagram at C of fig. 1.

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. Thus, 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 herein. 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 present inventive concept. 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

After automobile shock absorber ware took place the cavitation phenomenon, automobile shock absorber ware internals's surface can receive the impact to form the concave point and produce tiny metal particle, metal particle can flow at different cavities along with the shock attenuation oil repeatedly to aggravate automobile shock absorber ware's wearing and tearing, greatly degree has reduced automobile shock absorber ware's life.

Based on above-mentioned technical problem, this application provides a take filter equipment's automobile shock absorber ware, wherein, take filter equipment's automobile shock absorber ware simple structure does not relate to complicated manufacturing process and expensive material, has higher economic nature, simultaneously, to the manufacture factory, the automobile shock absorber ware of taking filter equipment that this application provided is easily produced, and low cost, more is favorable to controlling manufacturing cost, further is favorable to the product to promote and use.

An exemplary vehicle shock absorber with a filter device,

referring to fig. 1 to 9, a filter-equipped shock absorber for a vehicle according to a preferred embodiment of the present invention includes a cylinder 10 and a reserve tube 20. As shown in FIG. 1, both working tube 10 and reserve tube 20 are preferably cylindrical tubes, with working tube 10 disposed within reserve tube 20. Specifically, the working cylinder 10 has a first chamber 101 with two ends connected to the outside, the reserve tube 20 has a second chamber 201 with two ends connected to the outside, the working cylinder 10 is disposed in the second chamber 201, the diameter of the second chamber 201 is larger than that of the working cylinder 10, and the length of the second chamber 201 is larger than that of the working cylinder 10.

It should be noted that the first chamber 101 and the second chamber 201 are filled with damping oil. In order to prevent the shock absorbing oil from leaking, as shown in fig. 1, two ends of the working cylinder 10 are respectively provided with a bottom cover 30 and an oil seal guide assembly 40, as shown in fig. 2, the bottom cover 30 is provided with a containing hole 301, one end of the bottom cover 30 provided with the containing hole 301 is fixedly connected with the oil storage cylinder 20, and the fixed connection mode is preferably welded, meanwhile, the bottom cover 30 seals one end of the bottom cover 30 provided with the second chamber 201, one end of the working cylinder 10 close to the bottom cover 30 is arranged in the containing hole 301, two ends of the oil seal guide assembly 40 are respectively abutted against the working cylinder 10 and the oil storage cylinder 20, and simultaneously, the first chamber 101 and one end of the oil seal guide assembly 40 provided with the second chamber 201 are sealed. It should be noted that, at this time, one end of the first chamber 101 close to the bottom cover 30 is communicated with the accommodating hole 301, a predetermined distance is further provided between a side wall of the accommodating hole 301 and an outer side wall of the working cylinder, that is, the accommodating hole 301 is communicated with the second chamber 201, so that the damping oil can flow into the second chamber 201 from one end of the first chamber 101 close to the bottom cover 30.

Further, as shown in fig. 1, the vehicle shock absorber with a filter device further includes a piston rod 50 and a piston assembly 60. The piston assembly 60 is fixedly connected with the piston rod 50, and the fixed connection mode is not limited to a threaded connection. The piston assembly 60 is located at one end of the piston rod 50, and the piston rod 50 is provided with one end of the piston assembly 60 penetrates through the oil seal guide assembly 40 and is slidably disposed in the first chamber 101, more specifically, when the piston rod 50 moves in the first chamber 101, the piston assembly 60 makes surface contact with the wall surface of the first chamber 101, and divides the first chamber 101 into an upper chamber 101A and a lower chamber 101B.

Specifically, as shown in fig. 3, the piston assembly 60 includes a piston 601, the piston 601 has a plurality of first oil passing holes 6011 and a plurality of second oil passing holes 6012, two ends of the piston 601 are respectively provided with a plurality of first valve plates 602 and a plurality of second valve plates 603, the first valve plates 602 and the second valve plates 603 are both abutted to the piston 601, meanwhile, the first valve plates 602 seal one end of the first oil passing holes 6011, the second valve plates 603 seal one end of the second oil passing holes 6012, the first valve plates 602 do not seal the second oil passing holes 6012, and the second valve plates 603 do not seal the first oil passing holes 6011. More specifically, the first oil passing hole 6011 is arranged around the periphery of the second oil passing hole 6012, the first valve plate 602 has a plurality of through holes 6021, and the through holes 6021 are aligned with the corresponding second oil passing holes 6012, so that one end of the second oil passing hole 6012 close to the first valve plate 602 is not closed by the first valve plate 602. It should be further noted that in this embodiment, the second valve plate 603 is located on one side of the piston 601 close to the lower chamber 101B, and the first valve plate 602 is located on one side of the piston 601 close to the upper chamber 101A.

In order to ensure the sealing performance of the piston assembly 60 in the first chamber 101, that is, when the piston rod 50 is not moving, the damping oil in the upper chamber 101A does not flow from the gap between the base valve assembly 60 and the first chamber 101 to the lower chamber 101B, and vice versa, as shown in fig. 3, the side of the piston 601 has a placement groove 6013, the piston assembly 60 further includes a sealing ring 604, the sealing ring 604 is placed in the placement groove 6013, and the sealing ring 604 is attached to the inner wall of the first chamber 101.

Further, as shown in fig. 1 and 4, the vehicle shock absorber with a filter device further includes the base valve assembly 70, and the base valve assembly 70 includes a spring cover 701, a base valve 702, a valve body 703, and a tower spring 704. The spring cover 701 is located at an end of the working cylinder 10 facing away from the piston rod 50, the spring cover 701 abuts against the working cylinder 10 and closes an end of the working cylinder 10, and more specifically, the spring cover 701 abuts against the working cylinder 10 and closes the first chamber 101, the spring cover 701 has an inner cavity 701A, the bottom valve 702, the valve body 703 and the tower spring 704 are all disposed in the inner cavity 701A, wherein an end of the bottom valve assembly 70 close to the bottom cover 30 has the valve body 703, the bottom valve 702 is located at an end of the valve body 703 facing away from the bottom cover 30, the bottom valve 702 is disposed between the tower spring 704 and the valve body 703, two ends of the tower spring 704 are respectively fixedly connected with a bottom wall of the inner cavity 701A and the bottom valve 702, and a fixed connection manner of the tower spring 704 is implemented by welding.

Specifically, as shown in fig. 4, the bottom wall of the inner cavity 701A further includes a first through hole 701A1, the damping oil in the lower chamber 101B can flow into the bottom valve assembly 70 through the first through hole 701A1, the bottom valve 702 includes a plurality of third oil through holes 7021, the valve body 703 includes a fourth oil through hole 7031, a valve plate assembly 705 including a plurality of third valve plates is further disposed between the bottom valve 702 and the valve body 703, two ends of the valve plate assembly 705 are respectively abutted against the bottom valve 702 and the valve body 703, the valve plate assembly 705 seals one end of the third oil through hole 7021 close to the valve body 703, the valve plate assembly 705 includes a second through hole 7051, the second through hole 7051 is communicated with the fourth oil through hole 7031, when the valve plate assembly 705 is subjected to bending deformation by a force, the valve plate assembly 705 no longer seals the third oil through hole 7021, the third oil through hole 7021 is communicated with the second through hole 7051, the damping oil flowing into the bottom valve assembly 70 through the third through hole 7021, and then flows through the fourth oil through hole 7051 to the fourth oil through hole 7031.

Further, as shown in fig. 1 and 8, the automobile shock absorber with a filtering device further includes a filtering device 80, the filtering device 80 includes an annular base 801 and a plurality of first magnets 804, the annular base 801 is disposed in the accommodating hole 301, two ends of the annular base 801 respectively abut against the bottom valve assembly 70 and the bottom wall of the accommodating hole 301, the annular base 801 has a plurality of flow holes 8011, one end of each flow hole 8011 is provided with a filter screen 802, the damping oil in the oil storage cylinder 20 and the working cylinder 10 mutually flows through the flow holes 8011, and the first magnets 804 are mounted on an outer side wall of the annular base 801.

Specifically, as shown in fig. 6 and 8, one end of the valve body 703, which is close to the bottom cover 30, is provided with a first mounting hole 7032 (see fig. 4), the bottom wall of the accommodating hole 301 is provided with a second mounting hole 3011 (see fig. 2), and two ends of the annular base 801 are respectively placed in the first mounting hole 7032 and the second mounting hole 3011.

Specifically, as shown in fig. 6, 7, and 8, the annular base 801 has a third through hole 8012, the third through hole 8012 penetrates through the top wall and the bottom wall of the annular base 801, a side of the annular base 801 facing away from the third through hole 8012 has a plurality of extending ends 8013, the extending ends 8013 are fixedly connected to the annular base 801, the fixedly connected manner is implemented as an integral molding, each extending end 8013 corresponds to one of the flow holes 8011, each flow hole 8011 penetrates through the corresponding extending end 8013, and each flow hole 8011 is communicated with the third through hole 8012. It should be noted that the third through hole 8012 is communicated with the fourth oil passing hole 7031.

Specifically, as shown in fig. 6, 7 and 8, the filtering device 80 further includes a plurality of pressing plates 803, the pressing plates 803 correspond to the extending ends 8013 one to one, each pressing plate 803 is riveted to a top wall of the corresponding extending end 8013, the filter screen 802 is disposed between the extending ends 8013 and the pressing plates 803, and the pressing plates 803 are spaced from side surfaces of the receiving hole 301 by a predetermined distance. Further, the extending end 8013 has a plurality of riveting bosses 8013A, the filter screen 802 has a plurality of fourth through holes 8021, the pressing plate 803 has a plurality of riveting holes 8031, the riveting bosses 8013A sequentially penetrate through the third through holes 8012 and the riveting holes 8031, so that the pressing plate 803 is riveted with the extending end 8013, and the filter screen 802 placed therebetween is fixed. It should be noted that each of the pressure plates 803 has a fifth through hole 8032, the fifth through hole 8032 is opposite to the flow hole 8011, and the diameter of the fifth through hole 8032 is larger than or equal to the diameter of the flow hole 8011, so that the damping oil flows into the second chamber 201 from the fifth through hole 8032.

Further, as shown in fig. 6, 7 and 8, a plurality of first mounting grooves 8014 are formed on the outer side wall of the annular base 801, the first mounting grooves 8014 are located at the connection position of the extending end 8013 and the annular base 801, and the first magnet 804 is disposed in the first mounting groove 8014. The material of the annular base 801 is plastic, and the annular base 801 is not magnetized by the first magnet 804. It should be noted that the first magnet 804 and the first mounting groove 8014 are in interference fit.

Further, as shown in fig. 2, an annular groove 3012 is formed in a side surface of the accommodating hole 301, as shown in fig. 8, the automobile shock absorber with a filter device further includes a ring 901 and a second magnet 902, the ring 901 is disposed in the annular groove 3012, the ring 901 has a second mounting groove 9011, and the second magnet 902 is disposed in the second mounting groove 9011. Further, the ring 901 is in interference fit with the ring groove 3012, and the second magnet 902 is in interference fit with the second mounting groove 9011. The second mounting groove 9011 faces the flow passage 8011 in the direction of the center axis of the flow passage 8011. Note also that the material of the ring member 901 is plastic, and the ring member 901 is not magnetized by the second magnet 902.

The operation of the automobile shock absorber with the filter device will now be described: when the piston rod 50 moves towards the bottom cover 30, the volume of the lower chamber 101B is reduced, the volume of the upper chamber 101A is increased, at this time, the hydraulic pressure at the lower chamber 101B is higher than the hydraulic pressure at the upper chamber 101A, the edge of the first valve plate 602 is bent towards the bottom valve assembly 70 by a predetermined angle, so that the two ends of the first oil passing hole 6011 are communicated, a part of damping oil in the lower chamber 101B passes through the first oil passing hole 6011 and flows into the upper chamber 101A, and the damping oil rubs with the hole wall of the first oil passing hole 6011 to generate damping force. In addition, it should be further noted that when the piston rod 50 moves toward the bottom cover 30, another part of the damping oil in the lower chamber 101B flows to the third oil passing hole 7021 through the first oil passing hole 6011, since the hydraulic pressure in the lower chamber 101B is higher than the hydraulic pressure in the oil storage cylinder 20, the area of the valve plate assembly 705 close to the second oil passing hole 7051 bends toward the bottom cover 30 by a predetermined angle, two ends of the third oil passing hole 7021 are communicated with each other, and the damping oil passes through the third oil passing hole 7021, the second oil passing hole 7051, and the fourth oil passing hole 7031 in sequence, further passes through each of the through holes 8011, flows through the filter screen 802, and enters the second chamber 201 of the oil storage cylinder 20.

When the piston rod 50 moves towards the oil seal guide assembly 40, the hydraulic pressure in the lower chamber 101B is lower than the hydraulic pressure in the upper chamber 101A, and meanwhile, the hydraulic pressure in the lower chamber 101B is also lower than the hydraulic pressure in the second chamber 201, then at this time: 1. the second valve plate 603 is bent to the bottom cover 30 by a predetermined angle, two ends of the second oil passing hole 6012 are communicated, the damping oil disposed in the upper chamber 101A flows into the lower chamber 101B through the second oil passing hole 6012, and the damping oil rubs against a hole wall of the second oil passing hole 6012 to generate a damping force; 2. the damping oil in the second chamber 201 flows through the strainer 802, passes through each of the flow holes 8011 and flows into the fourth oil passing hole 7031, at this time, the bottom valve 702 is hydraulically moved toward the piston rod 50, the tower spring 704 is compressed, a gap is formed between one end of the third oil passing hole 7021 close to the bottom cap 30 and the valve plate assembly 705, and the damping oil flowing into the fourth oil passing hole 7031 passes through the third oil passing hole 7021 and sequentially flows into the lower chamber 101B through the first through hole 701 A1.

The working principle of the filter device 80 will now be explained: when the cavitation damages the surface of the bottom valve 702 or the valve body 703, the metal debris generated at the bottom valve 702 or the valve body 703 may flow into each of the flow holes 8011 from the fourth oil passing hole 7031 along with the damping oil. It should be noted that, at this time, the metal chippings are in a form of tiny particles, the size of the metal chippings is smaller than the size of the mesh holes of the screen 802, and the metal chippings pass through the screen 802 along with the damping oil. At this time, as shown in fig. 9, most of the damping oil flows toward the second chamber 201, and a small part of the damping oil flows toward the extending end 8013, in this process, since the self gravity, buoyancy, and viscous force of the metal debris are much smaller than the magnetic force of the first magnet 804 and the second magnet 902, the metal debris flowing in the damping oil is attracted by the first magnet 804 and the second magnet 902 and adsorbed on the surfaces of the first magnet 804 and the second magnet 902, and the position of the metal debris is fixed without further following the flow of the damping oil and causing abrasion to the wall surfaces of the first chamber 101 and the second chamber 201, thereby improving the service life of the automobile damper. Since the pressing plate 803 is spaced apart from the second magnet 902 by a predetermined distance, even if a large amount of metal debris is adsorbed on the second magnet 902, the flow of the damper oil is not affected. When the metal debris is accumulated to a certain degree, the contact sectional area of the metal debris and the shock absorption oil is increased, the magnetic attraction of the magnets to the metal debris or the impact force of the shock absorption oil to the metal debris at a moment is smaller, so that the metal debris is temporarily separated from the corresponding magnets, but the metal debris is adsorbed by the magnets for a long time, the metal debris is magnetized, even if the metal debris is temporarily separated from the magnets, the metal debris can be magnetically attracted into larger particles to flow along with the shock absorption oil, at the moment, the size of the metal debris is larger than the meshes of the filter screen 802, the metal debris is difficult to pass through the filter screen 802, and can flow along with the reduction of the instantaneous flow rate of the shock absorption oil, and the metal debris is circulated in the second chamber 201 and is adsorbed by the first magnet 804 or the second magnet 902 again.

It should be noted that, in the dual-cylinder automobile shock absorber, since the inner wall of the working cylinder 10 is to be in sliding fit with the piston assembly 60, it is particularly important to ensure the accuracy of the inner wall of the working cylinder 10, and the accuracy requirement of the inner wall of the reserve cylinder 20 is lower. Because the existence of the filter screen 802, even if the larger granular metal debris is not adsorbed by the corresponding magnet, the metal debris can also flow in the reserve cylinder 20 and is difficult to scratch the inner wall of the working cylinder 10, and the automobile shock absorber without the filter device 80 is provided, once the metal debris is generated due to the cavitation phenomenon, the metal debris can repeatedly flow in the first chamber 101 and the second chamber 201, so that the inner wall of the working cylinder 10 is extremely easy to scratch and damage, the wall surface of the first chamber 101 is locally sunken, and a gap exists between the piston assembly 60 and the first chamber 101 on the radial section of the piston assembly 60, and even if the piston rod 50 does not act, the damping oil can directly flow to the adjacent chamber from the gap, so that the piston assembly 60 fails in function.

In conclusion, the automobile shock absorber with the filtering device based on the embodiment of the application is clarified, and the automobile shock absorber with the filtering device has the advantages of effectively reducing cavitation damage, being long in service life and the like.

It is worth mentioning that in the embodiment of the present application, the automobile shock absorber with the filtering device 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 of taking filter equipment that this application provided is easily produced, and low cost, more is favorable to controlling manufacturing cost, further is favorable to the product to promote and use.

It will be understood by those skilled in the art that the embodiments of the present invention as 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 any variations or modifications may be made without departing from the principles of the present invention.

Claims

1. The utility model provides a take filter equipment's automobile shock absorber ware, includes a working cylinder, an oil storage cylinder, a piston rod and a bottom valve assembly, the working cylinder is arranged in the inside of oil storage cylinder, the working cylinder with the inside damping oil that has all been annotated of 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 located in the working cylinder, the bottom valve assembly is located the oil storage cylinder deviates from the one end of piston rod, its characterized in that: the automobile shock absorber with the filtering device further comprises:

2. The automobile shock absorber with the filtering device according to claim 1, wherein: the bottom valve assembly is characterized in that a valve body is arranged at one end, close to the bottom cover, of the bottom valve assembly, a first mounting hole is formed at one end, close to the bottom cover, of the valve body, a second mounting hole is formed in the bottom wall of the containing hole, and two ends of the annular base are arranged in the first mounting hole and the second mounting hole respectively.

3. The automobile shock absorber with the filtering device according to claim 2, wherein: the annular base is provided with a third through hole, the third through hole penetrates through the top wall and the bottom wall of the annular base, one side, away from the third through hole, of the annular base is provided with a plurality of extending ends, the extending ends are fixedly connected with the annular base, each extending end corresponds to one circulation hole, each circulation hole penetrates through the corresponding extending end, and meanwhile, each circulation hole is communicated with the third through hole.

4. The automobile shock absorber with the filtering device according to claim 3, wherein: the filter device further comprises a plurality of pressing plates, the pressing plates correspond to the extension ends one to one, each pressing plate is connected with the top wall of the corresponding extension end in a riveting mode, the filter screen is arranged between the extension end and the pressing plates, each pressing plate is provided with a fifth through hole, and the fifth through holes are opposite to the circulation holes.

5. The automobile shock absorber with the filtering device according to claim 4, wherein: the annular base is characterized in that a plurality of first mounting grooves are formed in the outer side wall of the annular base, the first mounting grooves are located at the joint of the extending end and the annular base, and a first magnet is arranged in the first mounting grooves.

6. The automobile shock absorber with the filtering device according to claim 5, wherein: the automobile shock absorber with the filtering device further comprises a ring-shaped piece and a second magnet, wherein the ring-shaped piece is arranged in the annular groove, the ring-shaped piece is provided with a second mounting groove, and the second magnet is arranged in the second mounting groove.

7. The automobile shock absorber with the filtering device according to claim 6, wherein: the annular base and the annular piece are made of plastic.

8. The automobile shock absorber with the filtering device according to claim 1, wherein: the piston assembly comprises a piston, the piston is provided with a plurality of first oil passing holes and a plurality of second oil passing holes, a plurality of first valve plates and a plurality of second valve plates are arranged at two ends of the piston respectively, the first valve plates and the second valve plates are abutted to the piston, meanwhile, the first valve plates are sealed at one ends of the first oil passing holes, the second valve plates are sealed at one ends of the second oil passing holes, the first valve plates are not sealed at the second oil passing holes, and the second valve plates are not sealed at the first oil passing holes.

9. The automobile shock absorber with the filtering device according to claim 1, wherein: the bottom valve assembly further comprises a spring cover, a bottom valve and a valve body, the spring cover is located the working cylinder deviates from one end of the piston rod, the spring cover abuts against the working cylinder and seals one end of the working cylinder, the spring cover is provided with an inner cavity, the bottom valve and the valve body are arranged in the inner cavity, the bottom valve is located the valve body deviates from one side of the bottom cover, the bottom valve and a valve block combination comprising a plurality of third valve blocks are further arranged between the valve bodies, and two ends of the valve block combination respectively abut against the bottom valve and the valve body.

10. The automobile shock absorber with the filtering device according to claim 9, wherein: the bottom valve assembly further comprises a tower spring, the tower spring is arranged in the inner cavity, and two ends of the tower spring are fixedly connected with the bottom wall of the inner cavity and the bottom valve respectively.