WO2005108131B1 - Hydraulic damper comprising a hydraulic compression shut-off means - Google Patents

Hydraulic damper comprising a hydraulic compression shut-off means

Info

Publication number
WO2005108131B1
WO2005108131B1 PCT/ES2005/000232 ES2005000232W WO2005108131B1 WO 2005108131 B1 WO2005108131 B1 WO 2005108131B1 ES 2005000232 W ES2005000232 W ES 2005000232W WO 2005108131 B1 WO2005108131 B1 WO 2005108131B1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic
valve
shock absorber
compression
distributor
Prior art date
Application number
PCT/ES2005/000232
Other languages
Spanish (es)
French (fr)
Other versions
WO2005108131A1 (en
Inventor
Artazcoz Jose Angel Recalde
Original Assignee
Ap Amortiguadores S A
Artazcoz Jose Angel Recalde
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, Artazcoz Jose Angel Recalde filed Critical Ap Amortiguadores S A
Publication of WO2005108131A1 publication Critical patent/WO2005108131A1/en
Publication of WO2005108131B1 publication Critical patent/WO2005108131B1/en

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

Landscapes

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

Abstract

The invention relates to a damper comprising a hydraulic shut-off valve (10) which is disposed inside a distributor (11) such that a coil (13) can be used to control and regulate the passage of fluid from the compression chamber to the auxiliary chamber (9) which is defined between two co-axial tubular bodies (1 and 2) that form part of the damper assembly. According to the invention, the activation of the coil (13) causes the axial movement of the valve (10) such that, in the activated position, the fluid passes from the compression chamber (6) to the auxiliary chamber (9) through opposing grooves in the valve and the distributor. Alternatively, when the coil is in the deactivated position, the flow of fluid is almost completely stopped.

Claims

REIVINDICACIONES MODIFICADAS [recibidas por la oficina Internacional el 21 de Noviembre de 2005 (21.11.05); reivindicaciones 1 a 8 remplazadas (3 páginas)] MODIFIED CLAIMS [received by the International Office on November 21, 2005 (21.11.05); Claims 1 to 8 replaced (3 pages)]
1.- AMORTIGUADOR HIDRÁULICO CON BLOQUEO HIDRÁULICO EN COMPRESIÓN, siendo del tipo que comprende dos cuerpos tubulares coaxiales, exterior (1) e interior (2) , entre los que se forma una cámara de compensación (9) , conteniendo ésta y el cuerpo tubular interior (2) un fluido y un pistón (3) con su vastago de accionamiento (4), definiendo el pistón (3) dos cámaras: una de tracción (5) y otra de compresión (6) , realizándose el paso de fluido en los movimientos relativos entre la rueda y el chasis del vehículo donde el amortiguador está montado, de una a otra cámara, a través de orificios calibrados y válvulas previstas en el pistón (3) , existiendo entre el cuerpo tubular interior (2) y la cámara de compensación (9) una válvula de bloqueo hidráulico (10) que permite el bloqueo hidráulico del recorrido de la rueda cuando ésta se aproxima al chasis del vehículo, caracterizado porque la válvula de bloqueo hidráulico (10) presenta una estructura en forma de cazoleta y se encuentra ajustada dentro de un distribuidor fijo tubular (11) cerrando un extremo del cuerpo tubular interior (2) del amortiguador, y dicha válvula de bloqueo hidráulico (10) está asociada a una bobina eléctrica (13) para controlar y limitar el paso del fluido desde la cámara de compresión (6) a la cámara de compensación (9) ; todo ello en orden a que en la posición activada de la bobina se permite el paso de un caudal de fluido hacia la cámara de compensación (9) , mientras que en la posición de reposo ese caudal de fluido es el mínimo debido al ajuste con holgura del distribuidor (11) y la válvula de bloqueo hidráulico (10) , reduciéndose así de forma importante la velocidad a la que el vastago de accionamiento (4) se introduce en el amortiguador. 1.- HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC BLOCKING IN COMPRESSION, being of the type that comprises two coaxial tubular bodies, exterior (1) and interior (2), between which a compensation chamber (9) is formed, containing this and the tubular body inside (2) a fluid and a piston (3) with its actuator rod (4), the piston (3) defining two chambers: one of traction (5) and another of compression (6), the passage of fluid being carried out in the relative movements between the wheel and the chassis of the vehicle where the shock absorber is mounted, from one to another chamber, through calibrated holes and valves provided in the piston (3), existing between the inner tubular body (2) and the chamber of compensation (9) a hydraulic blocking valve (10) that allows the hydraulic blocking of the path of the wheel when it approaches the chassis of the vehicle, characterized in that the hydraulic blocking valve (10) has a structure in the shape of a cazolet ay is fitted within a fixed tubular distributor (11) closing one end of the inner tubular body (2) of the shock absorber, and said hydraulic blocking valve (10) is associated with an electrical coil (13) to control and limit the passage of the fluid from the compression chamber (6) to the compensation chamber (9); all this in order that in the activated position of the coil a flow of fluid is allowed to pass to the compensation chamber (9), while in the rest position that flow of fluid is the minimum due to the adjustment with clearance of the distributor (11) and the hydraulic lock valve (10), thus significantly reducing the speed that the drive rod (4) is inserted in the damper.
2.- AMORTIGUADOR HIDRÁULICO CON BLOQUEO HIDRÁULICO EN COMPRESIÓN, según la reivindicación 1, caracterizado porque la pared lateral de la válvula de bloqueo hidráulico (10) posee unas ranuras anteriores calibradas (17) y otras ranuras posteriores también calibradas (18) que en la posición activa de la bobina eléctrica (13) están enfrentadas con otras ranuras (19) de la válvula (10) para el paso de fluido a la cámara de compensación (9) , que también discurre a través de las ranuras anteriores (17) , mientras que en la posición de reposo las ranuras (19) de la válvula (10) estarán enfrentadas con una superficie cerrada de la pared lateral del distribuidor (11) . 2.- HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC BLOCKING IN COMPRESSION, according to claim 1, characterized in that the side wall of the hydraulic blocking valve (10) has calibrated front grooves (17) and other rear grooves also calibrated (18) that in the active position of the electric coil (13) are faced with other slots (19) of the valve (10) for the passage of fluid to the compensation chamber (9), which also runs through the anterior slots (17), while in the rest position the slots (19) of the valve (10) will be facing a closed surface of the side wall of the distributor (11).
3.- AMORTIGUADOR HIDRÁULICO CON BLOQUEO HIDRÁULICO EN COMPRESIÓN, según una cualquiera de las reivindicaciones anteriores, caracterizado porque la válvula (10) incluye unas muescas (20) en su borde libre que hace tope contra una superficie escalonada frontal (16) del distribuidor (11) en la posición de reposo de la bobina (13) , por la acción de un resorte (12) ubicado entre el fondo de la válvula (10) y la bobina (13) con interposición de una arandela no magnética (14) ; todo ello en orden a que en esta posición de reposo existe un pequeño flujo de fluido hacia la cámara de compensación (9) que discurre por esas muescas (20) y ranuras anteriores (17) del distribuidor (11) . 3.- HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC BLOCKING IN COMPRESSION, according to any of the previous claims, characterized in that the valve (10) includes notches (20) on its free edge abutting against a front stepped surface (16) of the distributor ( 11) in the rest position of the coil (13), by the action of a spring (12) located between the bottom of the valve (10) and the coil (13) with interposition of a non-magnetic washer (14); all this in order that in this resting position there is a small flow of fluid towards the compensation chamber (9) that runs through those notches (20) and previous grooves (17) of the distributor (11).
4.- AMORTIGUADOR HIDRÁULICO CON BLOQUEO HIDRÁULICO EN COMPRESIÓN, según una cualquiera de las reivindicaciones anteriores, caracterizado porque el fondo de la válvula (10) incluye al menos un pequeño orificio pasante (15) . 4.- HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC BLOCKING IN COMPRESSION, according to any one of the preceding claims, characterized in that the bottom of the valve (10) includes at least one small through hole (15).
5.- AMORTIGUADOR HIDRÁULICO CON BLOQUEO HIDRÁULICO EN COMPRESIÓN, según la reivindicación 3, caracterizado porque una porción del resorte (12) se aloja dentro de un hueco central de la bobina (13), mientras que otra porción extrema del resorte (12) se ajusta alrededor de un tetón central del fondo de la válvula (10) . 5.- HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC BLOCKING IN COMPRESSION, according to claim 3, characterized in that a portion of the spring (12) is housed within a central recess of the spool (13), while another end portion of the spring (12) fits around a central pin of the bottom of the valve (10).
6.- AMORTIGUADOR HIDRÁULICO CON BLOQUEO HIDRÁULICO EN COMPRESIÓN, según una cualquiera de las reivindicaciones anteriores, caracterizado porque la bobina (13) se encuentra encastrada dentro del cuerpo tubular exterior (1) cerrando un extremo del mismo en correspondencia con el distribuidor (11) que cierra otro extremo parejo del cuerpo tubular interior (2) del amortiguador. 6.- HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC BLOCKING IN COMPRESSION, according to any of the previous claims, characterized in that the coil (13) is embedded inside the outer tubular body (1) closing one end thereof in correspondence with the distributor (11) which closes another even end of the inner tubular body (2) of the shock absorber.
7.- AMORTIGUADOR HIDRÁULICO CON BLOQUEO HIDRÁULICO EN COMPRESIÓN, según una cualquiera de las reivindicaciones anteriores, caracterizado porque incluye un casquillo (24) dispuesto concéntricamente con respecto a los cuerpos tubulares exterior (1) e interior (2) a la vez que se ubica al final del cuerpo interior (2) estando fijado mediante medios de interferencia al tubo interior (2) y al distribuidor (11) , incluyendo dicho casquillo (24) pasos axiales (25) para permitir el paso del fluido. 7.- HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC BLOCKING IN COMPRESSION, according to any of the preceding claims, characterized in that it includes a bushing (24) arranged concentrically with respect to the tubular bodies exterior (1) and interior (2) while being located at the end of the inner body (2) being fixed by means of interference to the inner tube (2) and the distributor (11), said bushing (24) including axial passages (25) to allow the passage of the fluid.
8.- AMORTIGUADOR HIDRÁULICO CON BLOQUEO HIDRÁULICO EN COMPRESIÓN, según una cualquiera de las reivindicaciones anteriores, caracterizado porque incluye una junta (23) intercalada entre el distribuidor (11) y la bobina (13) . 8.- HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC BLOCKING IN COMPRESSION, according to any one of the preceding claims, characterized in that it includes a gasket (23) interposed between the distributor (11) and the coil (13).
PCT/ES2005/000232 2004-05-04 2005-04-29 Hydraulic damper comprising a hydraulic compression shut-off means WO2005108131A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200401064A ES2251293B1 (en) 2004-05-04 2004-05-04 HYDRAULIC SHOCK ABSORBER WITH HYDRAULIC LOCK IN COMPRESSION.
ESP200401064 2004-05-04

Publications (2)

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

Family

ID=35320121

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2005/000232 WO2005108131A1 (en) 2004-05-04 2005-04-29 Hydraulic damper comprising a hydraulic compression shut-off means

Country Status (2)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016225341B4 (en) * 2016-12-16 2020-03-26 Zf Friedrichshafen Ag Hydraulic double tube shock absorber

Family Cites Families (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 (en) * 1982-07-26 1984-02-02 Showa Mfg Co Ltd Hydraulic shock absorber
DE4404963C2 (en) * 1993-04-24 1995-08-03 Bilstein August Gmbh Co Kg Adjustable vibration damper for motor vehicles
DE4342763A1 (en) * 1993-12-15 1995-06-22 Bilstein August Gmbh Co Kg Adjustable hydraulic suspension strut for vehicle
JP2001088529A (en) * 1999-09-20 2001-04-03 Kayaba Ind Co Ltd Anti-rolling type hydraulic shock absorber

Also Published As

Publication number Publication date
ES2251293B1 (en) 2007-06-16
ES2251293A1 (en) 2006-04-16
WO2005108131A1 (en) 2005-11-17

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