WO2005108131A1 - Amortisseur hydraulique equipe d'un mecanisme de blocage hydraulique en compression - Google Patents

Amortisseur hydraulique equipe d'un mecanisme de blocage hydraulique en compression Download PDF

Info

Publication number
WO2005108131A1
WO2005108131A1 PCT/ES2005/000232 ES2005000232W WO2005108131A1 WO 2005108131 A1 WO2005108131 A1 WO 2005108131A1 ES 2005000232 W ES2005000232 W ES 2005000232W WO 2005108131 A1 WO2005108131 A1 WO 2005108131A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
hydraulic
shock absorber
coil
distributor
Prior art date
Application number
PCT/ES2005/000232
Other languages
English (en)
Spanish (es)
Other versions
WO2005108131B1 (fr
Inventor
José Àngel RECALDE ARTÀZCOZ
Original Assignee
Ap Amortiguadores, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ap Amortiguadores, S.A. filed Critical Ap Amortiguadores, S.A.
Publication of WO2005108131A1 publication Critical patent/WO2005108131A1/fr
Publication of WO2005108131B1 publication Critical patent/WO2005108131B1/fr

Links

Classifications

    • 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
    • F16F9/3207—Constructional features
    • F16F9/3235—Constructional features of cylinders
    • F16F9/3257—Constructional features of cylinders in twin-tube type devices
    • 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
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • 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
    • F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke

Definitions

  • the present invention refers to a hydraulic shock absorber with hydraulic compression lock, which entails significant relevant characteristics in relation to conventional shock absorbers which They can be considered of this type.
  • the object of the invention is to achieve precise control of the fluid from the compression chamber to the auxiliary chamber and vice versa by means of an electric coil.
  • the shock absorbers that are preferably used in vehicles, regardless of the type, are part of the suspension system, together with the wheels and crossbows, torsion bars or springs and are the elements that collect the oscillations of the springs or crossbows, absorbing them and transforming them into heat.
  • Hydraulic shock absorbers are based on the resistance offered by all viscous fluid when passing through a calibrated hole. In the case of hydraulic shock absorbers, generally used in motor vehicles, these are made up of a cylinder whose interest runs a piston connected to a drive rod, the piston defining inside the cylinder two chambers, one compression and one traction , both flooded with fluid, usually oil.
  • the piston has a series of holes and valves that block the passage of the fluid to a greater or lesser extent, thus achieving a variable difficulty in the circulation of oil that passes from one chamber to another.
  • the shock absorber works in this case, displacing the drive rod in the sense that the piston compresses the fluid contained inside the cylinder. It is said that the shock absorber works under compression when the wheel axle travels towards the body or chassis, or by passing the wheel through an obstacle.
  • the shock absorber works by traction or expansion when the wheel returns to its previous position or goes through a depression or bump.
  • the behavior of a hydraulic shock absorber is determined by the forces obtained at given speeds of the drive rod.
  • the device that allows hydraulic compression locking is of the sliding type, in which the auxiliary chamber is divided into two subchambers through a valve that slides axially inside a distributor and is actuated by a coil electric This valve is constantly propelled towards the piston through a spring, a washer of copper or non-magnetic material being provided between the valve and said spring, so that there is no contact between the valve and the coil when the valve is attracted by the coil.
  • the non-magnetic material washer makes it possible to improve the passage time from the activated to deactivated state, avoiding the magnetization of the contact valve and allowing the spring to bring the valve to the deactivated position in the shortest possible time.
  • a pin is provided in the valve and a blind hole in the coil.
  • the valve has holes in its base to allow the fluid to pass from one side to the other, thus reducing the hydraulic resistance to sliding and balancing the pressures on both sides.
  • the valve has grooves on its cylindrical surface, which, when coinciding with other grooves of the distributor, allow the passage of the compression chamber fluid into the auxiliary chamber and vice versa.
  • This distributor has a cylindrical portion in its upper part that fits with the cylinder or inner tubular body of the shock absorber, either by means of an elastic seal, or by means of interference in the assembly of the two metal parts.
  • To position the distributor with respect to the coil it has the cylindrical lower part so that there is only one possible mounting position in the direction of the shaft, the angular position of one piece relative to the other not being important.
  • This cylinder admits the two possible constructions, interior or exterior, with respect to that of the coil.
  • a series of slots are provided in the intermediate zone of the distributor that can allow the passage of fluid from the compression chamber to the auxiliary chamber, depending on the position of the valve, said valve will prevent the passage of fluid between the chambers when the cylindrical part with grooves thereof is facing the cylindrical wall without grooves of the distributor.
  • the fluid flow due to the difference in diameters between the two pieces, necessary for assembly, is minimal and irrelevant against the passage of fluid in the radial direction when the grooves of the two pieces coincide.
  • the shock absorber also includes a concentric bushing to reduce undue radial movements when lateral forces are applied, including an intercalated joint between the distributor and the coil.
  • Figure 3. Shows a plan view of a valve that is part of the invention.
  • Figure 4. Shows a sectional view of the valve represented in the previous figure.
  • Figures 5 and 6. They show each section of a distributor that is also part of the whole of the invention.
  • Figure 7. It shows a sectional view where the housing of a spring or spring that is also part of the assembly of the invention is shown in detail.
  • Figure 8. Shows a detailed view of the fluid passages from the compression chamber to the auxiliary chamber of the shock absorber.
  • Figure 9. Shows a sectional view similar to that shown in figure 3 with some modifications.
  • a conventional shock absorber basically comprising an outer cylinder or tubular body 1, in which a tube or tubular body is housed inside internal coaxial 2 in which adjusts the piston 3 connected to the drive rod 4.
  • the piston 3 divides the internal compartment into two chambers: one of traction 5 and another of compression 6.
  • This piston also incorporates calibrated holes 7 and valves 8 that allow the passage of fluid from one chamber to another.
  • a bitube damper has been shown which includes the valves and intercom passages between the compression chamber 6 and an auxiliary chamber 9 limited between the two coaxial tubes 1 and 2.
  • a hydraulic blocking valve 10 is provided associated with an electric coil 13 and housed inside a tubular distributor 11 which in principle closes one end of the inner tube 2 corresponding to one end of the outer tube 1 closed by the electric coil 13, these two ends being arranged on the opposite side of the shock absorber from which the rod 4 appears.
  • This valve has a general configuration of a bowl. The bottom of this blocking valve 10 is facing in proximity to the coil 13 against the resistance of a spring 12 and with interposition of a flat washer 14 of non-magnetic material, specifically located between the spring 12 and the valve 10.
  • This washer 14 prevents contact between the surfaces of the valve 10 and the coil 13 when it is activated, which is when the passage of greater flow is essentially allowed of fluid from the compression chamber 6 to the auxiliary chamber 9 and vice versa through the valve 10 and the distributor 11.
  • the side wall of the valve 10 incorporates calibrated through grooves 19, which in the activated position of the coil 13 will be faced with other rear through slots 18 of the distributor 11.
  • valve slots 19 will face the distributor wall blocking the passage of the fluid through said slots 19 and 18 of the valve 10 and the distributor 11, respectively.
  • this case of blockage there is a small flow of fluid that will pass through small notches 20 arranged at the free edge of the valve 10, and through other anterior grooves 17 arranged in the distributor wall, being in this if that free edge is abutted against a stepped surface 16 of the distributor 11 by the action of the spring 12.
  • the fluid will also flow into the auxiliary chamber 9 through the anterior slots 17 of the distributor 11.
  • front holes 15 are provided in the bottom of this valve 10 that allow the passage of the retained fluid part between the base or bottom of the valve 10 and coil 13.
  • This coil 13 has a blind hole that helps guide the spring 12, into which a central pin of the valve 10 also enters when it is attracted by the coil 13.
  • a separation seal is provided. and sealing 23 disposed between the tubular distributor 11 and the coil 13, said seal 23 being located in correspondence with the corner perimeter contour of a recess of the coil 13, at the bottom of which is the blind hole for housing the spring.
  • This gasket has an inclined plane complemented by an inclined seat of the tubular distributor 11, the gasket will prevent oil leaks.
  • a bushing 24 concentrically arranged with respect to the outer and inner tubes 1 is also provided, while being located at the end of the inner tube 2, in correspondence with the distributor 11 and the coil 13.
  • This bushing 24 has axial passages 25 to allow the passage of fluid.
  • This bushing 24 serves to reduce the radial movements of the lower end of the inner tube 2 when lateral forces are applied to the shock absorber.
  • the bushing also has the utility of facilitating the guidance between the two tubes: inner and outer.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

La présente invention concerne un amortisseur hydraulique équipé d'un mécanisme de blocage hydraulique en compression. Cet amortisseur comprend une valve de blocage hydraulique (10) disposée à l'intérieur d'un distributeur (11), permettant, au moyen d'une bobine (13), de contrôler et de réguler le passage du fluide entre la chambre de compression et la chambre auxiliaire (9) délimitée par deux corps tubulaires coaxiaux (1, 2) qui font partie de l'ensemble de l'amortisseur. L'activation de la bobine (13) produit un déplacement axial de la valve (10). Lorsque la bobine (13) est en position activée, le fluide passe de la chambre de compression (6) à la chambre auxiliaire (9) par des rainures situées face à la valve et au distributeur. Lorsque la bobine (13) est en position désactivée, le flux entre les chambres est presque totalement interrompu.
PCT/ES2005/000232 2004-05-04 2005-04-29 Amortisseur hydraulique equipe d'un mecanisme de blocage hydraulique en compression WO2005108131A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200401064A ES2251293B1 (es) 2004-05-04 2004-05-04 Amortiguador hidraulico con bloqueo hidraulico en compresion.
ESP200401064 2004-05-04

Publications (2)

Publication Number Publication Date
WO2005108131A1 true WO2005108131A1 (fr) 2005-11-17
WO2005108131B1 WO2005108131B1 (fr) 2006-01-05

Family

ID=35320121

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2005/000232 WO2005108131A1 (fr) 2004-05-04 2005-04-29 Amortisseur hydraulique equipe d'un mecanisme de blocage hydraulique en compression

Country Status (2)

Country Link
ES (1) ES2251293B1 (fr)
WO (1) WO2005108131A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018108419A1 (fr) * 2016-12-16 2018-06-21 Zf Friedrichshafen Ag Amortisseur hydraulique bi-tube

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1363303A (en) * 1971-07-16 1974-08-14 Blazquez A G Hydraulic shock absolbers
US4031989A (en) * 1975-02-22 1977-06-28 Antonio Giner Blazquez Double effect hydraulic shock absorber
JPS5920712A (ja) * 1982-07-26 1984-02-02 Showa Mfg Co Ltd 油圧緩衝器
DE4404963A1 (de) * 1993-04-24 1994-10-27 Bilstein August Gmbh Co Kg Regelbarer Schwingungsdämpfer für Kraftfahrzeuge
DE4342763A1 (de) * 1993-12-15 1995-06-22 Bilstein August Gmbh Co Kg Hydraulischer, regelbarer Einrohrschwingungsdämpfer für Kraftfahrzeuge
JP2001088529A (ja) * 1999-09-20 2001-04-03 Kayaba Ind Co Ltd アンチロール型油圧緩衝器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1363303A (en) * 1971-07-16 1974-08-14 Blazquez A G Hydraulic shock absolbers
US4031989A (en) * 1975-02-22 1977-06-28 Antonio Giner Blazquez Double effect hydraulic shock absorber
JPS5920712A (ja) * 1982-07-26 1984-02-02 Showa Mfg Co Ltd 油圧緩衝器
DE4404963A1 (de) * 1993-04-24 1994-10-27 Bilstein August Gmbh Co Kg Regelbarer Schwingungsdämpfer für Kraftfahrzeuge
DE4342763A1 (de) * 1993-12-15 1995-06-22 Bilstein August Gmbh Co Kg Hydraulischer, regelbarer Einrohrschwingungsdämpfer für Kraftfahrzeuge
JP2001088529A (ja) * 1999-09-20 2001-04-03 Kayaba Ind Co Ltd アンチロール型油圧緩衝器

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 112 25 May 1984 (1984-05-25) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 21 3 August 2001 (2001-08-03) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018108419A1 (fr) * 2016-12-16 2018-06-21 Zf Friedrichshafen Ag Amortisseur hydraulique bi-tube

Also Published As

Publication number Publication date
ES2251293B1 (es) 2007-06-16
WO2005108131B1 (fr) 2006-01-05
ES2251293A1 (es) 2006-04-16

Similar Documents

Publication Publication Date Title
ES2863320T3 (es) Amortiguador hidráulico con un conjunto de tope de compresión hidráulico
ES2663249T3 (es) Amortiguador hidráulico sensible a la amplitud
ES2677106T3 (es) Un amortiguador de suspensión hidráulico con una válvula de disco flotante
KR101374457B1 (ko) 계속적으로 변화 가능한 준-활성 밸브를 갖는 충격 완충기
ES2377530T3 (es) Amortiguador de suspensión hidráulica
US10001189B2 (en) Shock absorber
CN111379811A (zh) 具有控制阀的阻尼器
BR112017019643B1 (pt) Amortecedor hidráulico para suspensão de veículo
US20060081431A1 (en) Amplitude controlled orifice valving
BRPI0414400B1 (pt) Monotube piston valve system with selective sangria
US20160201752A1 (en) Damping force variable type shock absorber
ES2543344T3 (es) Válvula de retención para un amortiguador de choques
JPH11315876A (ja) ダンパ
US20150362038A1 (en) Damping force controlling shock absorber
ES2741287T3 (es) Dispositivo de parachoques hidráulico
BRPI0705277B1 (pt) Válvula de controle de fluxo para amortecedores hidráulicos de amortecimento variável
KR970015078A (ko) 자동차 현가장치의 스트러트 어셈블리
WO2005106282A1 (fr) Butee de rebond hydraulique pour amortisseurs hydrauliques
JP2018535374A (ja) 快適弁をもつショックアブソーバ
KR20170089637A (ko) 감쇠력 가변 밸브 조립체 및 이를 포함하는 감쇠력 가변식 쇽업소버
WO2006037816A1 (fr) Systeme de soupapes pour amortisseurs hydrauliques
WO2005108131A1 (fr) Amortisseur hydraulique equipe d'un mecanisme de blocage hydraulique en compression
ES2863535T3 (es) Amortiguador con inmovilización selectiva bidireccional, grupo de rueda y motocicleta del mismo
EP3594529B1 (fr) Absorbeur de chocs dépendant de la position
BR0303263B1 (pt) aparelho de válvula inferior de amortecedor de choque hidráulico.

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

B Later publication of amended claims

Effective date: 20051121

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase