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ES2145688B1 - PERFECTED PISTON FOR HYDRAULIC SHOCK ABSORBERS. - Google Patents

PERFECTED PISTON FOR HYDRAULIC SHOCK ABSORBERS.

Info

Publication number
ES2145688B1
ES2145688B1 ES9800138A ES9800138A ES2145688B1 ES 2145688 B1 ES2145688 B1 ES 2145688B1 ES 9800138 A ES9800138 A ES 9800138A ES 9800138 A ES9800138 A ES 9800138A ES 2145688 B1 ES2145688 B1 ES 2145688B1
Authority
ES
Spain
Prior art keywords
piston
shock absorbers
hydraulic shock
closing sheet
assisted
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES9800138A
Other languages
Spanish (es)
Other versions
ES2145688A1 (en
Inventor
Viguiristi Joaquin Ancin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AP Amortiguadores SA
Original Assignee
AP Amortiguadores SA
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 SA filed Critical AP Amortiguadores SA
Priority to ES9800138A priority Critical patent/ES2145688B1/en
Publication of ES2145688A1 publication Critical patent/ES2145688A1/en
Application granted granted Critical
Publication of ES2145688B1 publication Critical patent/ES2145688B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Fluid-Damping Devices (AREA)

Abstract

Pistón perfeccionado para amortiguadores hidráulicos. Los amortiguadores hidráulicos convencionales, tanto del tipo monotubo como bitubo, cuentan con un pistón (2) conectado al vástago (3) de accionamiento. Se forman dos cámaras: una de expansión o tracción (4) y otra de compresión (5), inundadas de aceite o fluido similar que pasa de una a otra por orificios calibrados y válvulas existentes en el pistón (2), a consecuencia de los movimientos de elevación y descenso de la rueda correspondiente.Acorde con la invención, una de las caras del pistón posee resaltes frontales (6) adecuadamente distribuidos y portadores de sendos orificios axiales (7) que atraviesan al pistón (2), teniendo un reborde con al menos una muesca (21), sobrela que queda aplicada una lámina de cierre (8) impulsada por un resorte helicoidal (10) que apoya en una tuerca (11) anclada al extremo del vástago (3). Existen otros orificios (13) periféricos ubicados fuera de los resaltes frontales (6), obturados en la otra cara del pistón (2) por una segunda lámina de cierre (14) asistida por un resorte (15) que la mantiene en posición de cierre; existiendo además en esta última cara un reborde o resalte anular (16) de mayor diámetro que la lámina de cierre (14), sobre el que queda aplicada unatercera lámina de cierre (17) asistida por un resorte helicoidal (18).Improved piston for hydraulic shock absorbers. Conventional hydraulic shock absorbers, both monotube and bitube type, have a piston (2) connected to the drive rod (3). Two chambers are formed: one of expansion or traction (4) and another of compression (5), flooded with oil or similar fluid that passes from one to another through calibrated holes and existing valves in the piston (2), as a result of the lifting and lowering movements of the corresponding wheel. In accordance with the invention, one of the piston faces has appropriately distributed front projections (6) and carriers of individual axial holes (7) that cross the piston (2), having a flange with at least one notch (21), on which a closure sheet (8) is applied, driven by a helical spring (10) that rests on a nut (11) anchored to the end of the rod (3). There are other peripheral holes (13) located outside the front projections (6), sealed on the other side of the piston (2) by a second closing sheet (14) assisted by a spring (15) that keeps it in the closed position ; there being also in this last face an annular flange (16) of greater diameter than the closing sheet (14), on which a third closing sheet (17) is applied, assisted by a helical spring (18).

ES9800138A 1998-01-26 1998-01-26 PERFECTED PISTON FOR HYDRAULIC SHOCK ABSORBERS. Expired - Lifetime ES2145688B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9800138A ES2145688B1 (en) 1998-01-26 1998-01-26 PERFECTED PISTON FOR HYDRAULIC SHOCK ABSORBERS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9800138A ES2145688B1 (en) 1998-01-26 1998-01-26 PERFECTED PISTON FOR HYDRAULIC SHOCK ABSORBERS.

Publications (2)

Publication Number Publication Date
ES2145688A1 ES2145688A1 (en) 2000-07-01
ES2145688B1 true ES2145688B1 (en) 2001-02-01

Family

ID=8302518

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9800138A Expired - Lifetime ES2145688B1 (en) 1998-01-26 1998-01-26 PERFECTED PISTON FOR HYDRAULIC SHOCK ABSORBERS.

Country Status (1)

Country Link
ES (1) ES2145688B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1156457A (en) * 1956-07-20 1958-05-16 Telescopic hydraulic shock absorber, especially for cars
EP0336758B1 (en) * 1988-04-06 1994-06-29 Unisia Jecs Corporation Shock absorber with variable damping characteristics depending upon stroke speed
US5042624A (en) * 1988-09-29 1991-08-27 Atsugi Unisia Corporation Hydraulic shock absorber with pre-loaded valve for linear variation characteristics of damping force
JP2829747B2 (en) * 1989-08-09 1998-12-02 カヤバ工業株式会社 Hydraulic damper damping valve
US5441133A (en) * 1992-05-14 1995-08-15 Kayaba Kogyo Kabushiki Kaisha Hydraulic damper having leaf valve stopper
DE4424434A1 (en) * 1994-07-12 1995-08-03 Fichtel & Sachs Ag Damping control valve suspension strut

Also Published As

Publication number Publication date
ES2145688A1 (en) 2000-07-01

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