CN207406686U - A kind of one-way circulation oil path valve system - Google Patents

Abstract

A kind of one-way circulation oil path valve system, including outer housing, inner housing, piston assembly, first check-valve, second check-valve, non-return valve seat, outer housing is socketed on the outside of inner housing, there are gaps between outer housing and inner housing, gap is oil duct, inner housing includes multiple oilholes, first check-valve corresponds to oilhole and is set in inner housing, non-return valve seat is sealed in the lower end of outer housing and installed, piston assembly will be divided into upper oil cavitie and lower oil cavitie on the inside of inner housing, piston assembly is equipped with first through hole, first check-valve, second check-valve is connected upper oil cavitie with first through hole, oil duct, lower oil cavitie, form one-way circulation.Movement range is small when the utility model valve works, and oil circuit distance effectively shortens, and has the advantages that work response is fast, oil circuit is clear, favorable working performance.

Description

A kind of one-way circulation oil path valve system

Technical field

The utility model is related to a kind of combination of check-valves, especially a kind of one-way circulation oil path valves for ride-control System.

Background technology

At present, automobile suspension system is mostly using hydraulic buffer, by hydraulic oil in damper shelf body repeatedly from One inner cavity flows into another inner cavity by oil circuit, and the internal force of the friction of fluid and inner wall and fluid in itself forms damping force, from And inhibit the vibration that road surface is brought.

In the circulating oil path of conventional damper, to ensure the small of damper, oil path valve is generally disposed at outside damper Top and bottom in shell.Fluid flows through external bypass pipe from top inner cavity by crown valve, is flowed into using base valve Bottom inner cavity.Under this arrangement, bottom inner cavity can only can not go out from downside check valve oil inlet when compressing bottom inner cavity Oil has led to not effectiveness in vibration suppression, to ensure the fuel-displaced of lower oil cavitie, generally by being set on damper piston by bottom inner cavity The check valve of top inner cavity is directed toward, fluid is allowed to flow into top inner cavity and is flowed out again by crown valve.In damper as described above Oil circulation valve system, because oil circulation distance, check valve cause there are work low-response more, consumed energy is more, fever is serious The problem of；Meanwhile because crown valve is not usually check valve, therefore it is unclear that the oil circuits such as fluid water conservancy diversion in the course of work may occur Situation, influence the working effect of damper.

A kind of Pneumatic control adjustable hydraulic vibration damper as described in Application No. 200820168411.1.The patent oil circuit is epicoele Body flows into lower chamber through built-in bleed off circuit from downside check valve, and lower chamber inner fluid is returned to by the U-shaped oil circuit on piston Upper cavity, wherein top is not provided with one way stop peturn valve with piston oil passage, oil circuit is unintelligible, easy flows back；Oil circuit simultaneously Length is twice of housing depth, and oil circuit is long, work low-response.

In conclusion how to produce, a kind of work response is fast, oil circuit is clear, the circulating oil path valve system of favorable working performance is Problem to be solved in the utility model.

Utility model content

The purpose of this utility model is to provide a kind of work response is fast, oil circuit is clear, favorable working performance recycle oil Road valve system.

To realize purpose of utility model, the utility model employs following technical solution：A kind of one-way circulation oil path valve System, including outer housing, inner housing, piston assembly, first check-valve, second check-valve, non-return valve seat, which is characterized in that described Outer housing is socketed on the outside of the inner housing, and there are gap between the outer housing and the inner housing, the gap is oil duct, The inner housing includes at least one oilhole, and the first check-valve corresponds to the oilhole and is set in the inner housing, described to stop It returns valve seat and seals installation in the lower end of outer housing, the piston assembly will be divided into upper oil cavitie and lower oil cavitie on the inside of the inner housing, The upper oil cavitie and the lower oil cavitie are equipped at least one oilhole, and the piston assembly is equipped with first through hole, and described the One check-valves, the second check-valve are connected the upper oil cavitie, the oil duct, the lower oil cavitie with the first through hole, are formed One-way circulation.

Upper oil cavitie and the lower oil cavitie described in the first through hole diconnected；First check-valve connection is from described Oil pocket and the lower oil cavitie are directed toward the oil circuit of the oil duct；The second check-valve connection is directed toward the lower oil cavitie from the oil duct Oil circuit.The first check-valve, the second check-valve are connected the upper oil cavitie, the oil duct, institute with the first through hole Lower oil cavitie is stated, forms the asphalt channel of one-way circulation, makes working oil path clear, the problems such as when work does not flow back.Meanwhile oil Liquid is flowed out from the inner casing body sidewall, and with respect to conventional damper, from top, outflow reduces the path distance that oil pressure circulates without exception, Improve the response speed of the utility model.

The multiple oilhole allows fluid during work to be flowed out from each oilhole, improves the speed of oil circulation Degree, improves response.

Preferably, the first check-valve includes matrix, finger tip valve, mounting hole, fin, sealing-plug and bayonet.

Preferably, described matrix is split ring.

Open ring structure allows described matrix easily to dismount, and adapts to the different inner housings.

Preferably, described finger tip valve one end and described matrix are affixed.

Described finger tip valve one end is connected with described matrix, the finger tip valve other end be free state, the affixed one end in one end So that the finger tip valve is essentially a leaf spring, which occurs elasticity around the fixing end of itself and described matrix for free design Deformation just has the elastic force for returning back to original state when the finger tip valve leaves original state.Meanwhile leaf spring is at work Motion path be around fixing end circle swing, move distance is shorter with respect to the check valve of conventional piston rod-type, i.e., relatively With the response for adapting to faster operating rate.Simultaneously according to the rotary inertia formula of J=∫ r^2 dm, plate spring structure is moving When inertia be much smaller than piston rod check valve inertia.Also improve work response.

Preferably, described finger tip valve one end is provided with the mounting hole, the sealing-plug is fixed in the mounting hole.

It can be fully sealed between the sealing-plug first check-valve and the oilhole by setting, in oil duct Fluid may not flow into inner casing..

Preferably, the fin is arranged along described matrix short transverse.

Along described matrix short transverse the fin is set so that when the first check-valve is installed the fin can be with Extend to be adapted to the inner housing of different-diameter, while the restoring force of the fin allows the first check-valve close On the inner housing, it will not loosen.

Preferably, the bayonet is arranged symmetrically in described matrix openend.

The bayonet is set to cause the first check-valve can be with easy disassembly, it is not required that increase other installing components, It is simple to maintain the structure of mechanism, it is light.

Preferably, the second check-valve includes pedestal, valve rod, return spring.

Preferably, the pedestal is provided with the second through hole, the pedestal is fixed in the non-return valve seat, the valve rod in It is set in second through hole, the return spring is installed between the pedestal and the valve rod.

By setting the second check-valve, unidirectional oil passage is established between the oil duct and the lower oil cavitie, is prevented The only water conservancy diversion of fluid, sinuous flow.

Preferably, the first check-valve and the second check-valve material use alloy in lightweight.By using lightweight Alloy so that the finger tip valve and valve rod inertia moved when damper works is smaller, is adapted to the work switched at high speed Speed ensure that response.

The beneficial effects of the utility model are：Using check-valves made of alloy in lightweight, while the finger of first check-valve Movement range is small during sharp valve work, and work response is fast；Using the cooperation of first, second check-valves, so that oil circuit is unidirectional, clear；Upper, Lower oil cavitie is fuel-displaced from side wall, and oil circuit distance is made effectively to shorten, improves the working performance of damper.The utility model has work The advantages of response is fast, oil circuit is clear, favorable working performance.

Description of the drawings

Fig. 1 is the oil circuit schematic diagram of the preferred embodiment of the utility model；

Fig. 2 is the first check-valve schematic diagram of the preferred embodiment of the utility model；

Fig. 3 is that the sealing-plug of the preferred embodiment of the utility model installs sectional view；

Fig. 4 is the second check-valve schematic diagram of the preferred embodiment of the utility model；

Items are respectively in figure：1 outer housing, 11 oil ducts, 2 inner housings, 21 oilholes, 22 upper oil cavities, 23 lower oil cavities, 3 pistons Assembly, 31 first through hole, 4 first check-valves, 41 matrixes, 42 finger tip valves, 43 mounting holes, 44 fins, 45 sealing-plugs, 46 bayonets, 5 Second check-valve, 51 pedestals, 511,52 valve rod of the second through hole, 521 shelving block faces, 53 return springs, 6 non-return valve seats.

Specific embodiment

The utility model is described in detail below in conjunction with attached drawing：

As shown in the oil circuit schematic diagram of the preferred embodiment of Fig. 1：A kind of one-way circulation oil path valve system, including outer housing 1, Inner housing 2,52 assembly 3 of piston, first check-valve 4, second check-valve 5, non-return valve seat 6.

In the present embodiment, outer housing 1 is socketed in the outside of inner housing 2, there are gap between outer housing 1 and inner housing 2, should between Gap is oil duct 11, and 2 surface of inner housing is provided with multiple oilholes 21, and first check-valve 4 corresponds to oilhole 21 and is sleeved on the outer of inner housing 2 Side, non-return valve seat 6 are seal-installed on the lower end of outer housing 1, and piston assembly 3 includes piston head and piston rod, and piston rod is from shell Upper end stretch out, the inside of inner housing 2 is divided into upper oil cavitie 22 and lower oil cavitie 23 by piston head, is provided on the piston head of piston assembly 3 First through hole 31, first through hole diconnected upper oil cavitie 22 and lower oil cavitie 23；First check-valve 4 is connected from upper oil cavitie 22 and lower oil Chamber 23 is directed toward the oil circuit of oil duct 11；The oil circuit of lower oil cavitie 23 is directed toward in second check-valve connection from oil duct 11.First check-valve 4, Two check-valves 5 are connected upper oil cavitie 22, oil duct 11, lower oil cavitie 23 with first through hole 31, form the asphalt channel of one-way circulation, make work It is clear to make oil circuit, the problems such as when work does not flow back.

In the present embodiment, first through hole 31 is the diameter hole smaller than oilhole 21, because its diameter is smaller, corresponding hydraulic oil Mobility in hole is poor, and when damper works, fluid is mainly flowed from oilhole 21, first check-valve 4, second check-valve 5 Dynamic, first through hole 31, which rises, stablizes upper and lower oil pocket 22,23 pressure and the work that hydraulic oil is sent into upper oil cavitie 22 from lower oil cavitie 23 With.

When damper does compression travel, piston assembly 3 shows as moving relatively downward, the increase of 22 volume of upper oil cavitie, under 23 volume of oil pocket reduces, and 22 pressure of upper oil cavitie reduces at this time, the increase of 23 oil pressure of lower oil cavitie.Fluid open-top first stops in lower oil cavitie 23 Valve 4 is returned, oil duct 11 is flowed into from oilhole 21, while part fluid flows into upper oil cavitie 22 by first through hole 31 in lower oil cavitie 23, Balance the pressure of upper and lower oil pocket 22,23；Meanwhile because fluid enters oil duct 11 and increases its pressure, fluid passes through the second non-return Valve 5 flows into lower oil cavitie 23.This process can consume the energy of shock absorbers compression, reduce compression speed so that vehicle is more flat Surely.

When damper does extended travel, piston assembly 3 shows as moving relatively upward, and 22 volume of upper oil cavitie reduces, under 23 volume of oil pocket increases, and 22 pressure of upper oil cavitie increases at this time, and 23 oil pressure of lower oil cavitie reduces.Fluid open-top first stops in upper oil cavitie 22 Valve 4 is returned, oil duct 11 is flowed into from oilhole 21, part fluid flows into lower oil cavitie 23, balance by first through hole 31 in upper oil cavitie 22 The pressure of upper and lower oil pocket 22,23；Meanwhile because fluid enters oil duct 11 and increases its pressure, fluid passes through second check-valve 5 Flow into lower oil cavitie 23.This process can consume the energy of damper elongation, reduce elongation speed so that vehicle is more steady.

As shown in Figure 1, 2, 3, first check-valve 4 includes matrix 41, finger tip valve 42, mounting hole 43, fin 44, sealing-plug 45 With bayonet 46.

In the present embodiment, matrix 41 is split ring made of single layer alloy plate.

In the present embodiment, finger tip valve 42 is made with the integrated molding of matrix 41, and 42 one end of finger tip valve is connected with matrix 41, finger tip 42 other end of valve is free state, and freely design so that finger tip valve 42 is essentially a leaf spring to the affixed one end in one end, is referring to Just there is the elastic force for returning back to original state when sharp valve 42 leaves original state.The cross sectional shape of finger tip valve 42 and matrix 41 Projection of shape is identical, on the one hand facilitate production with installation, on the other hand can protect finger tip valve 42 in assembling process is transported not It collided with, damaged.

In the present embodiment, 42 free end of finger tip valve is set there are one mounting hole 43, and sealing-plug 45 is rubber plug made of rubber, Sealing-plug 45 is equipped with annular groove, and sealing-plug 45 is 43 inside of mounting hole by annular groove clamping.

In the present embodiment, 44 section of fin is semicircle, and fin 44 is arranged along 41 short transverse of matrix, what matrix 41 was open Both ends are respectively equipped with 3 fins 44.

In the present embodiment, bayonet 46 is the open slot being cut or punching out in matrix openings, at the opening of matrix 41 both ends It is arranged symmetrically, two bayonets 46 are open relatively.

In the present embodiment, first check-valve 4 is held in 2 outside of inner housing by the grafting of two opposite bayonets 46.Inner casing Each oilhole 21 on body 2 corresponds to one first check-valve 4 of installation, and sealing-plug 45 makes static condition for being pressed into oilhole 21 Lower oilhole 21 is blocked by sealing-plug 45, by the way that sealing-plug 45 is arranged to rubber material so that in the elastic reaction of finger tip valve 42 The abundant deformation in oilhole 21 of sealing-plug 45, is completely plugged oilhole 21, will not leave gap.Fin 44 is in the first non-return Valve 4 can be extended when snapping on inner housing 2 with deformation.On the one hand, the additional elongation provided by fin 44, the first non-return Valve 4 can be socketed on the inner housing 2 of different-diameter, improve versatility；On the other hand, semicircle fin 44, which has, replys just The elastic force of beginning position, after mounting the elastic force of fin 44 cause first check-valve 4 can with close and firm be mounted on inner casing On body 2, loosening will not fall off.The semicircular in shape of fin 44 so that flowing of the hydraulic oil in oil duct 11 is smooth simultaneously, will not Stopped.

Shown in second check-valve schematic diagram as shown in Figure 4, second check-valve 5 includes pedestal 51, valve rod 52, return spring 53。

In the present embodiment, pedestal 51 is the cylindrical housings of a top surface opening, and it is logical that 51 center location of pedestal is provided with second Hole 511,51 interference of pedestal are mounted on non-return valve seat 6, and valve rod 52 has the straight-bar of shelving block face 521 for one end, and valve rod 52 is pacified In the second through hole 511, the shelving block face 521 of valve rod 52 is fitted close with the second through hole 511, and shelving block face 521 is arranged on Be connected one side with lower oil cavitie 23.Return spring 53 is installed between pedestal 51 and valve rod 52, when 52 outside oil duct of valve rod, 11 oil pressure During more than inside 23 oil pressure of lower oil cavitie, valve rod 52 is pressed into lower oil cavitie 23, and shelving block face 521 is separated with the second through hole 511, fluid Lower chamber 23 is flowed into from oil duct 11.When 52 outside oil duct of valve rod, 11 oil pressure and equal or smaller lower oil cavitie 23 oil pressure in inside, return Position spring 53 promotes valve rod rebound, and shelving block face 521 and the second through hole 511 are closed.

In the present embodiment, first check-valve 4 and 5 material of second check-valve use alloy in lightweight.By using alloy in lightweight Material can effectively reduce the quality of first check-valve 4 and second check-valve 5,42 He of finger tip valve when lighter quality causes work The inertia of valve rod 52 is also smaller, can effectively promote response.Meanwhile alloy in lightweight is with respect to other macromolecules or caoutchouc elasticity material For material more resistant to anti-high pressure is corroded, the service life is stronger.

In the present embodiment, upper oil cavitie 22 is arranged circumferentially multiple oilholes 21 with 23 side wall of lower oil cavitie.Multiple oilholes 21 make Fluid can be flowed out from each oilhole 21 when must work, and improved the speed of oil circulation, improved response.Meanwhile week To uniformly distributed oilhole 21 so that the stress when being pressurized of inner housing 2 is more uniformly distributed, improve the service life and while stability uniformly by Power can also promote the working effect of damper.

Above example is simply described the preferred embodiment of the utility model, not to the structure of the utility model Think and scope is defined, without departing from the design concept of the present utility model, ordinary people in the field is new to this practicality The all variations and modifications that the technical solution of type is made each fall within the scope of protection of the utility model, the utility model request The technology contents of protection have all been recorded in detail in the claims.

Claims (10)

1. a kind of one-way circulation oil path valve system, including outer housing（1）, inner housing（2）, piston assembly（3）, first check-valve（4）、 Second check-valve（5）, non-return valve seat（6）, which is characterized in that the outer housing（1）It is socketed in the inner housing（2）Outside, institute State outer housing（1）With the inner housing（2）Between there are gap, the gap is oil duct（11）, the inner housing（2）Including extremely A few oilhole（21）, the first check-valve（4）The corresponding oilhole（21）It is set in the inner housing（2）, the non-return Valve seat（6）In outer housing（1）Lower end sealing installation, the piston assembly（3）By the inner housing（2）Inside is divided into upper oil cavitie （22）With lower oil cavitie（23）, the upper oil cavitie（22）With the lower oil cavitie（23）It is equipped at least one oilhole（21）, institute State piston assembly（3）Equipped with first through hole（31）, the first check-valve（4）, the second check-valve（5）It is logical with described first Hole（31）Connect the upper oil cavitie（22）, the oil duct（11）, the lower oil cavitie（23）, form one-way circulation.

A kind of 2. one-way circulation oil path valve system according to claim 1, which is characterized in that the first check-valve（4）Bag Include matrix（41）, finger tip valve（42）, mounting hole（43）, fin（44）, sealing-plug（45）And bayonet（46）.

A kind of 3. one-way circulation oil path valve system according to claim 2, which is characterized in that described matrix（41）For opening Ring.

A kind of 4. one-way circulation oil path valve system according to claim 3, which is characterized in that the finger tip valve（42）One end with Described matrix（41）It is affixed.

A kind of 5. one-way circulation oil path valve system according to claim 4, which is characterized in that the finger tip valve（42）One end is set It is equipped with the mounting hole（43）, the sealing-plug（45）It is fixed in the mounting hole（43）.

A kind of 6. one-way circulation oil path valve system according to claim 5, which is characterized in that the fin（44）Along the base Body（41）Short transverse is arranged.

A kind of 7. one-way circulation oil path valve system according to claim 6, which is characterized in that the bayonet（46）In the base Body（41）Openend is arranged symmetrically.

A kind of 8. one-way circulation oil path valve system according to claim 1, which is characterized in that the second check-valve（5）Bag Include pedestal（51）, valve rod（52）, return spring（53）.

A kind of 9. one-way circulation oil path valve system according to claim 8, which is characterized in that the pedestal（51）It is provided with Two through holes（511）, the pedestal（51）It is fixed in the non-return valve seat（6）, the valve rod（52）In second through hole（511） Middle suit, the return spring（53）It is installed on the pedestal（51）With the valve rod（52）Between.

A kind of 10. one-way circulation oil path valve system according to any claim in claim 1 to 9, which is characterized in that institute State first check-valve（4）With the second check-valve（5）Material uses alloy in lightweight.