CN105782324A - Solenoid valve assembly externally arranged on absorber and absorber - Google Patents
Solenoid valve assembly externally arranged on absorber and absorber Download PDFInfo
- Publication number
- CN105782324A CN105782324A CN201610280116.4A CN201610280116A CN105782324A CN 105782324 A CN105782324 A CN 105782324A CN 201610280116 A CN201610280116 A CN 201610280116A CN 105782324 A CN105782324 A CN 105782324A
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- Prior art keywords
- overflow
- electromagnetic valve
- overflow valve
- spring
- vibroshock
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
- F16F9/5123—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity responsive to the static or steady-state load on the damper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
Abstract
The invention provides a solenoid valve assembly externally arranged on an absorber and the absorber. The solenoid valve assembly externally arranged on the absorber comprises a solenoid valve part and an overflow valve. The solenoid valve part comprises a solenoid valve deck, a solenoid valve body, a coil, a solenoid valve element, an armature, a first spring and a second spring. The overflow valve comprises an overflow valve deck provided with open holes formed in the two ends in the axial direction, an overflow valve body provided with an oil inflow hole and an overflow hole, an overflow valve seat provided with a center hole, an overflow adjusting assembly, an overflow valve element, a pressure adjusting spring and a supporting piece. Through the overflow valve of the solenoid valve assembly externally arranged on the absorber, damping adjustment can be achieved through the overflow adjusting assembly of the overflow valve when the oil pressure is small and a throttling hole is closed, so that the solenoid valve assembly externally arranged on the absorber is high in damping adjustment response speed, stable in performance and capable of meeting the requirements that damping force is adjusted continuously in real time in the suspension frame movement process.
Description
Technical field
The invention belongs to Vehicle damper technical field, particularly relate to a kind of vibroshock external electromagnetic valve assembly and vibroshock.
Background technology
Variable-damping shock is as the vitals of active and semi-active suspension system, and its performance quality directly affects control stability and the riding comfort of vehicle.At present, variable-damping shock is generally divided into step motor control throttling cellular type, magnetic rheology type, current changing type and electromagnetic type etc..Wherein, the response of step motor control throttling cellular type vibroshock is slower, it is impossible to meet the requirement of the real-time damping adjusting power of Suspension movement process；Magnetic rheology type vibroshock and current changing type are still in theoretical research stage, and structure is complicated and properties of product are unstable；Electromagnetic type vibroshock then possesses simple in construction, responds feature rapid, stable performance, becomes actively first-selected with semi-active suspension volume production scheme.
Major part electromagnetic type vibroshock is placed in the working cylinder of vibroshock for the electromagnetic valve of damping adjusting, for instance application number is the Chinese patent application of CN201310475991.4.
But, the vibroshock that this type of electromagnetic valve is built-in, electromagnetic valve is generally among fluid, and durability is poor, and install, difficult in maintenance.
The Chinese patent that notification number is CN203856940U discloses a kind of motor driving ride control shock absorber, including oil storage cylinder, bottom valve assembly, motor regulating valve assembly, working cylinder, middle cylinder, piston valve assembly, guider assembly and piston rod.This vibroshock adopts triplex structure, and outermost is oil storage cylinder, and the inside is working cylinder, and centre is middle cylinder.Middle cylinder matches with working cylinder outer surface, have opening on the upside of working cylinder to communicate with middle cylinder, a horn mouth is outwards had on the downside of middle cylinder, match with the horn mouth of middle cylinder in motor control valve assembly lower end, motor control valve assembly is connected with oil storage cylinder, and thus motor regulating valve assembly is placed in the outside of described oil storage cylinder.When vibroshock stretches or compression is moved, fluid will flow into middle cylinder from working cylinder, finally enters oil storage cylinder via motor regulating valve assembly.This external motor regulating valve assembly can regulate the damping of vibroshock, and install, easy to maintenance.
But, owing to the adjustment valve of this vibroshock is step motor control, damping governing response is slower, it is impossible to meet the requirement of real-time continuous ground damping adjusting power in Suspension movement process.
Summary of the invention
The technical problem to be solved is to regulate the vibroshock of valve for existing employing external motor, damping governing response is slower, the defect of the requirement of real-time continuous ground damping adjusting power in Suspension movement process can not be met, it is provided that a kind of vibroshock external electromagnetic valve assembly.
This invention address that the technical scheme that above-mentioned technical problem adopts is as follows:
A kind of vibroshock external electromagnetic valve assembly is provided, including solenoid valve body and overflow valve, wherein,
nullDescribed solenoid valve body includes solenoid valve cover、Electromagnetic valve body、Coil、Electromagnetic valve core、Armature、First spring and the second spring，Described electromagnetic valve body includes solenoid valve seat and fairlead，One end of described solenoid valve seat fastens with solenoid valve cover，Described coil is arranged between solenoid valve seat and fairlead in the cannelure of formation，Described armature is slidably arranged in fairlead，The center through hole coaxial with fairlead and electromagnetic valve core it is provided with in the middle part of described solenoid valve seat，Link through armature and with armature in one end of described electromagnetic valve core，Other end sliding plug is in center through hole，Described electromagnetic valve core outer wall is provided with groove，Described groove and center through hole inwall cooperatively form throttle orifice，The other end of described solenoid valve seat be internally formed oil suction chamber，Described electromagnetic valve body is formed the oil outlet connected in the circumferential with center through hole，Described throttle orifice is connected between oil suction chamber and oil outlet，Described first spring supporting armature is away from one end of overflow valve，Described second spring supporting electromagnetic valve core is near one end of overflow valve；
nullDescribed overflow valve includes the overflow valve gap of axial two ends perforate、It is provided with the overflow valve body of fuel feed hole and spout hole、It is provided with the relief valve seat of centre bore、Overflow adjusting part、Overflow spool、Pressure spring and support member，Described support member is connected on the periphery of described relief valve seat，And overflow valve cover cavity is divided into disconnected two parts，Described pressure spring is supported between overflow valve gap and support member，The other end of described solenoid valve seat seals and is plugged in one end perforate of overflow valve gap，One end of described overflow valve body is inserted in overflow valve gap other end perforate and is overlapped with one end of relief valve seat，Described overflow spool is for being positioned at overflow adjusting part between the fuel feed hole of relief valve seat inner chamber and overflow valve body，Described overflow adjusting part can be opened so that relief valve seat inner chamber connects with the fuel feed hole of overflow valve body under default oil pressure promotes，Described spout hole when relief valve seat leaves overflow valve body with relief valve seat inner space，Gap between described overflow valve body and overflow valve gap connects with spout hole.
Further, described electromagnetic valve core is provided with the tapering connected with groove near one end of overflow valve, the external diameter in described tapering is in axial direction gradually reduced, described tapering near its external diameter of one end of groove less than the center through hole internal diameter away from the one end open of armature, described tapering away from its external diameter of one end of groove more than the center through hole internal diameter away from the one end open of armature.
Further, described fairlead includes the guide pin bushing and the magnetism-isolating loop that are coaxially disposed, one end of described magnetism-isolating loop is connected with solenoid valve seat, the other end is connected with one end of guide pin bushing, and the other end of described guide pin bushing stretches out solenoid valve cover, sheathed first sealing ring on described guide pin bushing, described first sealing ring side contacts with solenoid valve cover, opposite side and coil contact, described solenoid valve seat and guide pin bushing are made up of permeability magnetic material, and described magnetism-isolating loop is made up of non-magnet material.
Further, described solenoid valve cover vibroshock external electromagnetic valve assembly also includes with externally threaded nut, described guide pin bushing is provided with female thread, described nut is threaded on guide pin bushing, one end of armature is just connected to spring base by described nut, one end of described first spring is connected on spring base, and the other end is connected to armature one end away from overflow valve, arranges the second sealing ring between described spring base and guide pin bushing.
Further, described electromagnetic valve core extends to and the pilot hole inwall sliding contact of formation in nut through one end of armature, described armature is axially spaced to form electromagnetic valve inner chamber between with spring base, described electromagnetic valve core is internally provided with axial through bore, one end of described axial through bore connects with oil suction chamber, the other end connects with pilot hole, described electromagnetic valve core is provided with radial perforation, one end of described radial perforation connects in the circumferential with axial through bore, the other end and electromagnetic valve inner space.
Further, described solenoid valve cover vibroshock external electromagnetic valve assembly also includes with externally threaded spring capping, described solenoid valve seat and the inwall of one end of overflow valve gap grafting are formed with female thread, described spring capping is threaded on one end of solenoid valve seat and overflow valve gap grafting, one end of described second spring is connected to electromagnetic valve core one end near overflow valve, the other end is connected on spring capping, and described spring capping is provided with the oil suction chamber of connection electromagnetic valve body and the opening of overflow valve cover cavity.
Further, described vibroshock external electromagnetic valve assembly also includes electromagnetism valve pocket and the overflow valve pocket of both ends open, the one end open of described electromagnetism valve pocket is sealedly connected on the periphery, one end of described solenoid valve seat, other end opening is tightly connected or is integrally formed on the connector of auto shock absorber, forming back cavity between described electromagnetism valve pocket and overflow valve gap, described back cavity connects between oil outlet and oil storage cylinder；The oil inlet end of described overflow valve body seals and is plugged in overflow valve pocket, and described overflow valve pocket is tightly connected or is integrally formed on the connector of vibroshock middle cylinder, and described fuel feed hole connects with middle cylinder.
Further, the inwall of described overflow valve body is sequentially formed with the first boss to relief valve seat direction, second boss and the 3rd boss, described overflow adjusting part includes volute spring, overflow valve block and overflow pad, one end of described 3rd boss and relief valve seat overlaps, described overflow spool sequentially passes through volute spring, overflow valve block, the fuel feed hole of overflow pad and overflow valve body, described overflow spool is formed with a head that relatively main body portion diameter is bigger, the head of described overflow spool is pressed in one end of volute spring, the other end of described volute spring is pressed in a side surface of overflow valve block, the edge on the opposite side surface of described overflow valve block is pressed on the second boss, the middle part on the opposite side surface of described overflow valve block is pressed on a side surface of overflow pad, the opposite side surface of described overflow pad is pressed on the first boss.
Further, the inwall of described overflow valve body is formed with multiple rib, the end face of the plurality of rib constitutes described first boss, and described overflow spool is formed with an afterbody that relatively main body portion diameter is bigger, and the afterbody of described overflow spool is pressed on the bottom surface of multiple rib.
Further, the inwall of described overflow valve body is also formed with the 4th boss, described spout hole is formed between the 3rd boss and the 4th boss, described support member includes the backup washer and the spring supporting pad that are connected on relief valve seat periphery, one end of described pressure spring is pressed on a side surface of spring supporting pad, the opposite side surface of described spring supporting pad is pressed on a side surface of backup washer, the opposite side surface of described backup washer is pressed on the 4th boss, the outer peripheral face of described 4th boss and the inwall sliding contact of overflow valve body, between described overflow valve gap and overflow valve body, the 3rd sealing ring is set.
Vibroshock external electromagnetic valve assembly according to the present invention, electromagnetic valve core and armature linkage, first spring is in opposite direction to the axial force of electromagnetic valve core to the axial force of armature and the second spring and is mutually matched, when making to lead in coil different size of electric current, electromagnetic valve core can both keep balance (dynamic balancing), make electromagnetic valve core can realize continuous action with the consecutive variations of electric current in coil within the scope of its impulse stroke, thus realizing the consecutive variations of throttle orifice aperture, vibroshock is made to be flowed into the fluid flow consecutive variations of oil storage cylinder through vibroshock external electromagnetic valve assembly by middle cylinder, and then realize the continuously adjustabe of resistance of shock absorber.And, overflow valve can and throttle orifice less at oil pressure when cutting out, realize damping by the overflow adjusting part of self to regulate so that the damping governing response of this vibroshock external electromagnetic valve assembly is rapid, stable performance, it is possible to meet the requirement of real-time continuous ground damping adjusting power in Suspension movement process.Further, adopt the vibroshock of this vibroshock external electromagnetic valve assembly to have good road surface adaptive capacity, can ensure that the damping characteristic of suspension system changes with the change of running conditions of vehicle well, it is possible to take into account ride performance and manipulation safety.
It addition, present invention also offers a kind of vibroshock, it includes above-mentioned vibroshock external electromagnetic valve assembly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the vibroshock external electromagnetic valve assembly that one embodiment of the invention provides；
Fig. 2 is the structural representation of vibroshock external electromagnetic its electromagnetic valve body of valve assembly that one embodiment of the invention provides；
Fig. 3 is the enlarged drawing at a place in Fig. 1；
Fig. 4 is the structural representation of vibroshock its overflow valve body of external electromagnetic valve assembly that one embodiment of the invention provides；
Fig. 5 is the structural representation of the vibroshock that one embodiment of the invention provides.
Accompanying drawing labelling in Figure of description is as follows:
100, vibroshock external electromagnetic valve assembly；
1, solenoid valve cover；101, wire harness passing-hole；2, electromagnetic valve body；201, solenoid valve seat；202, guide pin bushing；203, magnetism-isolating loop；204, center through hole；205, oil suction chamber；206, oil outlet；207, first annular groove；208, the second cannelure；3, coil；4, electromagnetic valve core；401, groove；402, tapering；403, axial through bore；404, radial perforation；5, armature；6, the first spring；7, spring base；8, the second spring；9, spring capping；901, opening；10, nut；1001, pilot hole；11, cannelure；12, the first sealing ring；13, the second sealing ring；14, electromagnetic valve inner chamber；15, fluid sealant；16, overflow valve gap；16a, overflow valve cover cavity；17, overflow valve body；171, fuel feed hole；172, spout hole；173, the first boss；174, the second boss；175, the 3rd boss；176, the 4th boss；177, rib；178, bottom surface；18, relief valve seat；18a, relief valve seat inner chamber；181, centre bore；19, overflow spool；191, main part；192, head；193, afterbody；20, pressure spring；21, backup washer；22, spring supporting pad；23, the 4th sealing ring；24, volute spring；25, overflow valve block；26, overflow pad；27, wire harness；28, the 3rd sealing ring；29, electromagnetism valve pocket；30, overflow valve pocket；31, the 5th sealing ring；32, oil storage cylinder；33, connector；34, back cavity；35, the 6th sealing ring；36, middle cylinder；37, connector；38, working cylinder；381, opening；39, piston rod；40, piston valve assembly；41, guider assembly；42, bottom valve assembly.
Detailed description of the invention
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The vibroshock external electromagnetic valve assembly 100 that one embodiment of the invention provides, including solenoid valve body and overflow valve.Solenoid valve body and overflow are separate dismountable parts.
As shown in Figures 1 and 2, described solenoid valve body includes solenoid valve cover 1, electromagnetic valve body 2, coil 3, electromagnetic valve core 4, armature the 5, first spring 6, spring base the 7, second spring 8, spring capping 9 and nut 10.
As shown in Figures 1 and 2, described electromagnetic valve body 2 includes solenoid valve seat 201, guide pin bushing 202 and magnetism-isolating loop 203, guide pin bushing 202 and magnetism-isolating loop 203 and constitutes the fairlead of the present embodiment.
As shown in Figures 1 and 2, the opening of one end that described solenoid valve seat 21 is relatively large in diameter and solenoid valve cover 1 fastens, in the cannelure 11 that described coil 3 is arranged between solenoid valve seat 201 and fairlead (guide pin bushing 202 and magnetism-isolating loop 203) to be formed.Described armature 5 is slidably arranged in fairlead, is provided with the center through hole 204 coaxial with fairlead and electromagnetic valve core 4 in the middle part of described solenoid valve seat 201.
In the present embodiment, magnetism-isolating loop 203 upper surface is welded with guide pin bushing 202 lower surface, and the outer surface of magnetism-isolating loop 203 and guide pin bushing 202 and the upper end of solenoid valve seat 201 form cannelure 204, for fixed coil 3；Solenoid valve seat 201 and guide pin bushing 202 adopt permeability magnetic material to make, magnetism-isolating loop 203 non-magnet material such as pyrite or red copper makes, it is reduce the electromagnetic force sharply increased when armature 5 down moves and is about to reach the limit of position that magnetism-isolating loop 203 designs the effect in the middle of solenoid valve seat 201 and guide pin bushing 202, makes armature 5 suffered electromagnetic force in whole motor process become steady.
As shown in Figure 1, the other end of described guide pin bushing 202 stretches out solenoid valve cover 1, sheathed first sealing ring 12 on described guide pin bushing 202, and described first sealing ring 12 side contacts with solenoid valve cover 1, opposite side contacts with coil 3, realizes the sealing between solenoid valve cover 1, guide pin bushing 202 and coil 3 with this.
As shown in Figure 1, described guide pin bushing 202 is provided with female thread, described nut 10 is threaded on guide pin bushing 202, one end of armature 5 is just connected to spring base 7 by described nut 10, one end of described first spring 6 is connected on spring base 7, the other end is connected to armature 5 one end away from overflow valve, with this first spring 6, armature 5 is had pre-pressing force.Second sealing ring 13 is set between described spring base 7 and guide pin bushing 202, realizes the sealing between guide pin bushing 202 and nut 10 with this.Nut 10 upper surface arranges inner hexagonal hole, is used for installing fastening nut 10, and nut upper end can be designed as non-circular shape, for instance triangle, quadrangle or other irregular shapes, plays locking effect by fastening deformation.
It addition, as it is shown in figure 1, described nut 10 top and guide pin bushing 202 stretch out filling with sealant 15 in the space between inside one end of solenoid valve cover 1.Fluid sealant 15 also is able to while playing sealing function prevent nut 10 from arbitrarily being dismantled.
As it is shown in figure 1, the pilot hole 1001 inwall sliding contact that one end of described electromagnetic valve core 2 traverse armature 5 extends to and formed in nut 10, described armature 5 is axially spaced to form electromagnetic valve inner chamber 14 between with spring base 7.
In the present embodiment, one end of described electromagnetic valve core 4 is through armature 5 and links with armature 5, other end sliding plug is in center through hole 204, this one end that described electromagnetic valve core 4 is plugged in center through hole 204 is designed as the structure that middle thick two is thin, middle thick portion be provided with circumferential ring around groove 401, center through hole 204 inwall of groove 401 and electromagnetic valve body 2 cooperatively forms throttle orifice, the shape of groove 401 can be trapezoidal, triangle, circular arc etc. are variously-shaped, the throttle orifice discharge characteristic that difform groove 401 and electromagnetic valve body 2 cooperatively form is different.
In the present embodiment, as shown in Figures 1 and 3, described electromagnetic valve core 4 is provided with the tapering 402 with certain angle connected with groove 401 near one end of overflow valve, described tapering 402 near one end (small end) its external diameter of groove 401 less than the center through hole 204 internal diameter away from the one end open of armature 5, described tapering 402 away from one end (greatly end) its external diameter of groove 401 more than the center through hole 204 internal diameter away from the one end open of armature 5, ensure when electromagnetic valve is not powered on, electromagnetic valve core 4 can prop up the center through hole 204 one end open away from armature 5 of electromagnetic valve body 2 under the second spring 8 effect toward armature 5 direction, play the effect closing throttle orifice.
As shown in Figures 1 and 2, the other end (one end away from armature 5) of described solenoid valve seat 201 be internally formed oil suction chamber 205, described electromagnetic valve body 2 is also formed with the oil outlet 206 connected in the circumferential with center through hole 204.Described throttle orifice is connected between oil suction chamber 205 and oil outlet 206.
Additionally, as shown in Figure 1, it is additionally provided with axial through bore 403 in described electromagnetic valve core 4, one end of described axial through bore connects with oil suction chamber 205, the other end connects with the pilot hole 1001 in nut 10, being additionally provided with radial perforation 404 on described electromagnetic valve core 4, one end of described radial perforation 404 connects in the circumferential with axial through bore 403, and the other end connects with electromagnetic valve inner chamber 14.During work, fluid can enter in axial through bore 403 through oil suction chamber 205, electromagnetic valve inner chamber 14 is flowed into then through radial perforation 404, owing to electromagnetic valve core 4 and armature 5 can through electromagnetic valve inner chambers 14 when motion, thus, can guarantee that electromagnetic valve core 4 and armature 5 are operationally in oil lubrication state, and there is due to fluid impact when certain damping action decreases electromagnetic valve core 4 action and noise.
As it is shown in figure 1, be provided with wire harness passing-hole 101 in described solenoid valve cover 1, described coil 3 is connected with peripheral control unit (not indicating in figure) by the wire harness 27 through wire harness passing-hole 101.
As shown in Figure 1, described overflow valve includes the overflow valve gap 16 of axial two ends perforate, is provided with the overflow valve body 17 of fuel feed hole 171 and spout hole 172, is provided with the relief valve seat 18 of centre bore 181, overflow adjusting part, overflow spool 19, pressure spring 20, backup washer 21 and spring supporting pad 22, backup washer 21 and spring supporting pad 22 and constitutes the support member of this embodiment.Fuel feed hole 171 runs through the both sides end face of overflow valve body 17.
As shown in Figure 1, spring capping 9 is with external screw thread, described solenoid valve seat 201 is plugged on the inwall of one end of overflow valve gap 16 and is formed with female thread, described spring capping 9 is threaded on solenoid valve seat 201, one end of described second spring 8 is connected to electromagnetic valve core 4 one end (being against the big end in tapering 402) near overflow valve, the other end is pushed down by spring capping 9, and described spring capping 9 is provided with the oil suction chamber 205 of connection electromagnetic valve body and one or more openings 901 of overflow valve cover cavity 16a.Fluid can pass through opening 901 and enter in the oil suction chamber 205 in solenoid valve seat.
As it is shown in figure 1, be provided with the 4th sealing ring 23 between the other end of described solenoid valve seat 201 and overflow valve gap 16 one end perforate inwall, realize the sealing between described solenoid valve seat 201 and overflow valve gap 16 with this.
As it is shown in figure 1, the inwall of described overflow valve body 17 is sequentially formed with the first boss the 173, second boss the 174, the 3rd boss 175 and the 4th boss 176 to relief valve seat 18 direction.First boss the 173, second boss the 174, the 3rd boss 175 and the 4th boss 176 are parallel to each other, and are perpendicular to the axis of overflow valve body 17.Between 3rd boss 175 and the 4th boss 176, circle distribution is provided with multiple spout hole 172.Gap between overflow valve body 17 with overflow valve gap 16 connects with spout hole 172, and fluid can be back to the oil storage cylinder of vibroshock by this gap by spout hole 172.
nullAs shown in Fig. 1 and Fig. 4，In the present embodiment，Described overflow adjusting part includes volute spring 24、Overflow valve block 25 and overflow pad 26，One end of described 3rd boss 175 and relief valve seat 18 overlaps，Described overflow spool 19 sequentially passes through volute spring 24、Overflow valve block 25、The fuel feed hole 171 of overflow pad 26 and overflow valve body，Described overflow spool 19 is formed with the head 192 that relatively main part 191 diameter is bigger and an afterbody 193，The head 406 of described overflow spool is pressed in one end of volute spring 24，The other end of described volute spring 24 is pressed in a side surface of overflow valve block 25，The edge on the opposite side surface of described overflow valve block 25 is pressed on the second boss 174，The middle part on the opposite side surface of described overflow valve block 25 is pressed on a side surface of overflow pad 26，The opposite side surface of described overflow pad 26 is pressed on the first boss 173.
In the present embodiment, as shown in Fig. 1 and Fig. 4, the inwall of described overflow valve body 17 is formed with three ribs 177 around fuel feed hole 171, the end face of three ribs 177 constitutes described first boss 173, the afterbody 193 of described overflow spool is pressed on the bottom surface 178 of three ribs, bottom surface 178 is designed as low inside and high outside shape, and with fuel feed hole 171 in an acute angle, fuel feed hole 171 is separated into three regions by three ribs 177.
And then, by overflow spool 19, overflow adjusting part is positioned between relief valve seat inner chamber 18a and the fuel feed hole 171 of overflow valve body.Under default oil pressure promotes, overflow valve block 25 deformation of overflow adjusting part is opened so that relief valve seat inner chamber 18a connects with the fuel feed hole 171 of overflow valve body, and fluid can enter relief valve seat inner chamber 18a through fuel feed hole 171.
As shown in Figure 1, one end of described pressure spring 20 is pressed on a side surface of spring supporting pad 22, the opposite side surface of described spring supporting pad 22 is pressed on a side surface of backup washer 21, the opposite side surface of described backup washer 21 is pressed on the 4th boss 176, the outer peripheral face of described 4th boss 176 and the inwall sliding contact of overflow valve body 17, arrange the 3rd sealing ring 28 between described overflow valve gap 16 and overflow valve body 17.
The vibroshock external electromagnetic valve assembly of the above embodiment of the present invention, its operation principle is as follows:
Vibroshock external electromagnetic valve assembly encloses in 3 cold situations online, due to the second spring 8 to the axial force (pointing to the first spring 6) of electromagnetic valve core 4 more than first spring 6 axial force (pointing to the second spring 8) to armature 5, electromagnetic valve core 4 is toward the motion of armature 5 direction until the tapering 402 of electromagnetic valve core 4 is against the center through hole 204 one end open away from armature 5, electromagnetic valve is closed (throttle orifice cut out), and now the oil suction chamber 205 of electromagnetic valve body does not connect with oil outlet 206.Now, outside fluid (middle cylinder from vibroshock) is flowed into by the fuel feed hole 171 of overflow valve body, when oil pressure to the active force of overflow valve block 25 lower surface more than volute spring 24 to the active force of overflow valve block 25 upper surface time, overflow valve block 25 is opened.Owing to the rigidity of volute spring 24 is typically designed only small, therefore having only to less oil pressure can open overflow valve block 25.Fluid is full of relief valve seat inner chamber 18a after pushing overflow valve block 25 open, and part fluid enters overflow valve cover cavity 16a by the centre bore 181 of relief valve seat.When the oil pressure difference suffered by relief valve seat 18 upper and lower surface acts on the active force on relief valve seat 18 more than pressure spring 20 by spring supporting pad 22 and backup washer 21, relief valve seat 18 is opened and leaves overflow valve body 17, fluid is by gap between relief valve seat 18 bottom surface and the 3rd boss 175 surface of overflow valve body 17, and flows out to the oil storage cylinder of vibroshock through the spout hole 172 of overflow valve body 17.
When coil 3 is energized, coil 3 produces electromagnetic force, when electric current is less, electromagnetic force is less than making a concerted effort that the first spring 6 and the second spring 8 combined effect produce, electromagnetic valve is not switched on (throttle orifice cut out), fluid pushes overflow valve sheet 25 open after flowing into from overflow valve body 17 fuel feed hole 171, flows out by the gap between relief valve seat 18 bottom surface and the 3rd boss 175 surface of overflow valve body 17 and through the spout hole 172 of overflow valve body 17.
When electric current is increased to certain value, electromagnetic force is more than making a concerted effort that the first spring 6 and the second spring 8 combined effect produce, and armature 5 moves to the second spring 8 direction, drives electromagnetic valve core 4 to move, and throttle orifice is opened, and the oil suction chamber 205 of electromagnetic valve body connects with oil outlet 206.Along with electric current continues to increase, throttle orifice aperture becomes big, become big by the fluid flow of throttle orifice, relief valve seat 18 is closed, fluid pushes overflow valve sheet 25 open after flowing into from overflow valve body 17 fuel feed hole 171, enter overflow valve cover cavity 16a through relief valve seat 18 centre bore 181, enter oil suction chamber 205 by the opening 901 on spring capping 9, and be back to the oil storage cylinder of vibroshock via throttle orifice and oil outlet 206.
Vibroshock external electromagnetic valve assembly according to the above embodiment of the present invention, electromagnetic valve core and armature linkage, first spring is in opposite direction to the axial force of electromagnetic valve core to the axial force of armature and the second spring and is mutually matched, when making to lead in coil different size of electric current, electromagnetic valve core can both keep balance (dynamic balancing), make electromagnetic valve core can realize continuous action with the consecutive variations of electric current in coil within the scope of its impulse stroke, thus realizing: along with electric current from zero gradually to maximum current value, electromagnetic valve core moves to overflow valve direction, throttle orifice realizes the consecutive variations from off state to aperture maximum rating, the oil suction chamber of solenoid valve seat flows into the ascending consecutive variations of fluid flow of oil outlet via throttle orifice.Otherwise, along with electric current is gradually decreased as zero from maximum, electromagnetic valve core moves away from overflow valve, and throttle orifice realizes the consecutive variations from aperture maximum rating to closed mode, and it is zero that the oil suction chamber of solenoid valve seat is continuously reduced by maximum via the fluid flow of throttle orifice inflow oil outlet.Consecutive variations by throttle orifice aperture so that vibroshock is flowed into the fluid flow consecutive variations of oil storage cylinder by middle cylinder through vibroshock external electromagnetic valve assembly, and then realizes the continuously adjustabe of resistance of shock absorber.And, overflow valve can and throttle orifice less at oil pressure when cutting out, realize damping by the overflow adjusting part of self to regulate so that the damping governing response of this vibroshock external electromagnetic valve assembly is rapid, stable performance, it is possible to meet the requirement of real-time continuous ground damping adjusting power in Suspension movement process.Further, adopt the vibroshock of this vibroshock external electromagnetic valve assembly to have good road surface adaptive capacity, can ensure that the damping characteristic of suspension system changes with the change of running conditions of vehicle well, it is possible to take into account ride performance and manipulation safety.
Additionally, as shown in figures 2 and 5, in another embodiment, described vibroshock external electromagnetic valve assembly also includes electromagnetism valve pocket 29 and the overflow valve pocket 30 of both ends open, the one end open of described electromagnetism valve pocket 29 is sealedly connected on the periphery, one end of described solenoid valve seat 201, the part that the outside of described solenoid valve seat 201 is connected with electromagnetism valve pocket 29 is arranged at intervals with first annular groove 207 and the second cannelure 208, first annular groove 207 is provided with the 5th sealing ring 31, seal for being formed between electromagnetism valve pocket 29 and solenoid valve seat 201, second cannelure 208 press-fits for electromagnetism valve pocket and solenoid valve body, additionally, also dual sealing functions can be played.
The other end opening of described electromagnetism valve pocket 29 is tightly connected or is integrally formed on the connector 33 of auto shock absorber 32, forms back cavity 34 between described electromagnetism valve pocket 29 and overflow valve gap 16, and described back cavity 34 connects between oil outlet 206 and oil storage cylinder 32；The periphery of the oil inlet end (fuel feed hole 171 arrival end) of described overflow valve body 17 arranges the 6th sealing ring 35, the oil inlet end making overflow valve body 17 seals and is plugged in overflow valve pocket 30, described overflow valve pocket 30 is tightly connected or is integrally formed on the connector 37 of vibroshock middle cylinder 36, and described fuel feed hole 171 connects with middle cylinder 36.
Generally, the cylinder body of electromagnetism valve pocket 29 and overflow valve pocket 30 and vibroshock is integrally machined and obtains or welded, thus, in the present embodiment, electromagnetism valve pocket 29 and overflow valve pocket 30 are considered as a part for vibroshock external electromagnetic valve assembly.And in the embodiment shown in fig. 1, electromagnetism valve pocket 29 and overflow valve pocket 30 are considered as a part for the cylinder body of vibroshock.
Additionally, as shown in Figure 5, one embodiment of the invention additionally provides a kind of vibroshock, including above-mentioned vibroshock external electromagnetic valve assembly 100, working cylinder 38, middle cylinder 36, oil storage cylinder 32, piston rod 39, piston valve assembly 40, guider assembly 41 and bottom valve assembly 42.
This vibroshock adopts triplex structure, and outermost is oil storage cylinder 32, and the inside is working cylinder 38, and centre is middle cylinder 36.Middle cylinder 36 matches with working cylinder 38 outer surface, the opening 381 communicated with middle cylinder 36 is had on the upside of working cylinder 38, a connector 33 is had on the downside of oil storage cylinder 32, a connector 37 is had on the downside of middle cylinder 38, connector 33 is formed with the electromagnetism valve pocket 29 stretched out laterally, one end away from connector 33 of electromagnetism valve pocket 29 is sealedly connected on the periphery of solenoid valve seat 201 one end, connector 37 is formed with the overflow valve pocket 30 stretched out laterally, the oil inlet end of overflow valve body 17 seals and is plugged in overflow valve pocket 30, thus this vibroshock external electromagnetic valve assembly 100 is arranged on the outside of oil storage cylinder 32.When vibroshock stretches or compression is moved, fluid will flow into middle cylinder from working cylinder, and via entering oil storage cylinder after vibroshock external electromagnetic valve assembly 100, the damping to realize vibroshock regulates.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (11)
1. a vibroshock external electromagnetic valve assembly, it is characterised in that include solenoid valve body and overflow valve, wherein,
nullDescribed solenoid valve body includes solenoid valve cover、Electromagnetic valve body、Coil、Electromagnetic valve core、Armature、First spring and the second spring，Described electromagnetic valve body includes solenoid valve seat and fairlead，One end of described solenoid valve seat fastens with solenoid valve cover，Described coil is arranged between solenoid valve seat and fairlead in the cannelure of formation，Described armature is slidably arranged in fairlead，The center through hole coaxial with fairlead and electromagnetic valve core it is provided with in the middle part of described solenoid valve seat，Link through armature and with armature in one end of described electromagnetic valve core，Other end sliding plug is in center through hole，Described electromagnetic valve core outer wall is provided with groove，Described groove and center through hole inwall cooperatively form throttle orifice，The other end of described solenoid valve seat be internally formed oil suction chamber，Described electromagnetic valve body is formed the oil outlet connected in the circumferential with center through hole，Described throttle orifice is connected between oil suction chamber and oil outlet，Described first spring supporting armature is away from one end of overflow valve，Described second spring supporting electromagnetic valve core is near one end of overflow valve；
nullDescribed overflow valve includes the overflow valve gap of axial two ends perforate、It is provided with the overflow valve body of fuel feed hole and spout hole、It is provided with the relief valve seat of centre bore、Overflow adjusting part、Overflow spool、Pressure spring and support member，Described support member is connected on the periphery of described relief valve seat，And overflow valve cover cavity is divided into disconnected two parts，Described pressure spring is supported between overflow valve gap and support member，The other end of described solenoid valve seat seals and is plugged in one end perforate of overflow valve gap，One end of described overflow valve body is inserted in overflow valve gap other end perforate and is overlapped with one end of relief valve seat，Described overflow spool is for being positioned at overflow adjusting part between the fuel feed hole of relief valve seat inner chamber and overflow valve body，Described overflow adjusting part can be opened so that relief valve seat inner chamber connects with the fuel feed hole of overflow valve body under default oil pressure promotes，Described spout hole when relief valve seat leaves overflow valve body with relief valve seat inner space，Gap between described overflow valve body and overflow valve gap connects with spout hole.
2. vibroshock external electromagnetic valve assembly according to claim 1, it is characterized in that, described electromagnetic valve core is provided with the tapering connected with groove near one end of overflow valve, the external diameter in described tapering is in axial direction gradually reduced, described tapering near its external diameter of one end of groove less than the center through hole internal diameter away from the one end open of armature, described tapering away from its external diameter of one end of groove more than the center through hole internal diameter away from the one end open of armature.
3. vibroshock external electromagnetic valve assembly according to claim 1, it is characterized in that, described fairlead includes the guide pin bushing and the magnetism-isolating loop that are coaxially disposed, one end of described magnetism-isolating loop is connected with solenoid valve seat, the other end is connected with one end of guide pin bushing, the other end of described guide pin bushing stretches out solenoid valve cover, sheathed first sealing ring on described guide pin bushing, described first sealing ring side contacts with solenoid valve cover, opposite side and coil contact, described solenoid valve seat and guide pin bushing are made up of permeability magnetic material, and described magnetism-isolating loop is made up of non-magnet material.
4. vibroshock external electromagnetic valve assembly according to claim 3, it is characterized in that, described solenoid valve cover vibroshock external electromagnetic valve assembly also includes with externally threaded nut, described guide pin bushing is provided with female thread, described nut is threaded on guide pin bushing, and one end of armature is just being connected to spring base by described nut, and one end of described first spring is connected on spring base, the other end is connected to armature one end away from overflow valve, arranges the second sealing ring between described spring base and guide pin bushing.
5. vibroshock external electromagnetic valve assembly according to claim 4, it is characterized in that, described electromagnetic valve core extends to and the pilot hole inwall sliding contact of formation in nut through one end of armature, described armature is axially spaced to form electromagnetic valve inner chamber between with spring base, described electromagnetic valve core is internally provided with axial through bore, one end of described axial through bore connects with oil suction chamber, the other end connects with pilot hole, described electromagnetic valve core is provided with radial perforation, one end of described radial perforation connects in the circumferential with axial through bore, the other end and electromagnetic valve inner space.
6. vibroshock external electromagnetic valve assembly according to claim 1, it is characterized in that, described solenoid valve cover vibroshock external electromagnetic valve assembly also includes with externally threaded spring capping, described solenoid valve seat and the inwall of one end of overflow valve gap grafting are formed with female thread, described spring capping is threaded on one end of solenoid valve seat and overflow valve gap grafting, one end of described second spring is connected to electromagnetic valve core one end near overflow valve, the other end is connected on spring capping, described spring capping is provided with the oil suction chamber of connection electromagnetic valve body and the opening of overflow valve cover cavity.
7. vibroshock external electromagnetic valve assembly according to claim 1, it is characterized in that, described vibroshock external electromagnetic valve assembly also includes electromagnetism valve pocket and the overflow valve pocket of both ends open, the one end open of described electromagnetism valve pocket is sealedly connected on the periphery, one end of described solenoid valve seat, other end opening is tightly connected or is integrally formed on the connector of auto shock absorber, forming back cavity between described electromagnetism valve pocket and overflow valve gap, described back cavity connects between oil outlet and oil storage cylinder；The oil inlet end of described overflow valve body seals and is plugged in overflow valve pocket, and described overflow valve pocket is tightly connected or is integrally formed on the connector of vibroshock middle cylinder, and described fuel feed hole connects with middle cylinder.
null8. the vibroshock external electromagnetic valve assembly according to claim 1-7 any one，It is characterized in that，The inwall of described overflow valve body is sequentially formed with the first boss to relief valve seat direction、Second boss and the 3rd boss，Described overflow adjusting part includes volute spring、Overflow valve block and overflow pad，One end of described 3rd boss and relief valve seat overlaps，Described overflow spool sequentially passes through volute spring、Overflow valve block、The fuel feed hole of overflow pad and overflow valve body，Described overflow spool is formed with a head that relatively main body portion diameter is bigger，The head of described overflow spool is pressed in one end of volute spring，The other end of described volute spring is pressed in a side surface of overflow valve block，The edge on the opposite side surface of described overflow valve block is pressed on the second boss，The middle part on the opposite side surface of described overflow valve block is pressed on a side surface of overflow pad，The opposite side surface of described overflow pad is pressed on the first boss.
9. vibroshock external electromagnetic valve assembly according to claim 8, it is characterized in that, the inwall of described overflow valve body is formed with multiple rib, the end face of the plurality of rib constitutes described first boss, described overflow spool is formed with an afterbody that relatively main body portion diameter is bigger, and the afterbody of described overflow spool is pressed on the bottom surface of multiple rib.
10. vibroshock external electromagnetic valve assembly according to claim 8, it is characterized in that, the inwall of described overflow valve body is also formed with the 4th boss, described spout hole is formed between the 3rd boss and the 4th boss, described support member includes the backup washer and the spring supporting pad that are connected on relief valve seat periphery, one end of described pressure spring is pressed on a side surface of spring supporting pad, the opposite side surface of described spring supporting pad is pressed on a side surface of backup washer, the opposite side surface of described backup washer is pressed on the 4th boss, the outer peripheral face of described 4th boss and the inwall sliding contact of overflow valve body, between described overflow valve gap and overflow valve body, the 3rd sealing ring is set.
11. a vibroshock, it is characterised in that include the vibroshock external electromagnetic valve assembly described in claim 1-10 any one.
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Application publication date: 20160720 |