ES2277538B1 - VASTAGO GUIDE FOR HYDRAULIC SHOCK ABSORBERS AND MANUFACTURING PROCEDURE. - Google Patents
VASTAGO GUIDE FOR HYDRAULIC SHOCK ABSORBERS AND MANUFACTURING PROCEDURE. Download PDFInfo
- Publication number
- ES2277538B1 ES2277538B1 ES200502506A ES200502506A ES2277538B1 ES 2277538 B1 ES2277538 B1 ES 2277538B1 ES 200502506 A ES200502506 A ES 200502506A ES 200502506 A ES200502506 A ES 200502506A ES 2277538 B1 ES2277538 B1 ES 2277538B1
- Authority
- ES
- Spain
- Prior art keywords
- ring
- guide
- shock absorbers
- hydraulic shock
- friction
- 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 - Fee Related
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 14
- 230000035939 shock Effects 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000004033 plastic Substances 0.000 claims abstract description 6
- 239000000725 suspension Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 10
- 230000000295 complement effect Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000002783 friction material Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
-
- 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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/366—Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Guía de vástago para amortiguadores hidráulicos y procedimiento de fabricación. Los amortiguadores hidráulicos son utilizados como parte de la suspensión en vehículos. La guía de vástago (1) está acoplada a un extremo de la pared tubular cilíndrica por cuyo interior se desliza el pistón, siendo portadora del orificio de deslizamiento del vástago de accionamiento con interposición de un anillo de reducido coeficiente de rozamiento. El anillo (2) es cerrado de material de bajo coeficiente de rozamiento y el cuerpo (3) de guía de vástago propiamente dicho se sobremoldea formando un conjunto inseparable. El material inyectado es plástico.Stem guide for hydraulic shock absorbers and manufacturing procedure. Hydraulic shock absorbers are used as part of the suspension in vehicles. The rod guide (1) is coupled to one end of the cylindrical tubular wall through which the piston slides, bearing the sliding hole of the actuating rod with interposition of a ring of reduced coefficient of friction. The ring (2) is closed of low friction coefficient material and the rod guide body (3) itself is overmoulded into an inseparable assembly. The injected material is plastic.
Description
Guía de vástago para amortiguadores hidráulicos y procedimiento de fabricación.Stem guide for hydraulic shock absorbers and manufacturing procedure.
La presente invención, según lo expresa el enunciado de esta memoria descriptiva, se refiere a una guía de vástago para amortiguadores hidráulicos y a su procedimiento de fabricación, siendo estos amortiguadores hidráulicos del tipo de los que preferentemente se utilizan como parte de la suspensión en vehículos, presentando notables características relevantes y ventajosas en relación con las guías utilizadas hasta la fecha en los amortiguadores hidráulicos.The present invention, as expressed by the set forth in this specification, refers to a guide to rod for hydraulic shock absorbers and their procedure manufacturing, these hydraulic shock absorbers being the type of which are preferably used as part of the suspension in vehicles, presenting notable relevant characteristics and advantageous in relation to the guides used to date in hydraulic shock absorbers
Un amortiguador hidráulico está definido por un cilindro por cuyo interior discurre el pistón conectado a un vástago de accionamiento, determinándose en el interior del cilindro y a uno y otro lado del pistón, sendas cámaras, una de compresión y otra de tracción, inundadas ambas de fluido, generalmente aceite.A hydraulic shock absorber is defined by a cylinder through which the piston connected to a drive rod, determined inside the cylinder and on either side of the piston, two chambers, one of compression and other traction, both flooded with fluid, Generally oil
La cámara de tracción queda limitada por el pistón, las paredes del cilindro, el vástago y la guía del vástago por el interior de la cual desliza éste a través del correspondiente orificio previsto en ella.The traction chamber is limited by the piston, cylinder walls, rod and rod guide on the inside of which it slides through the corresponding hole provided in it.
Los amortiguadores que se emplean preferentemente en vehículos, independientemente del tipo que sean, forman parte del sistema de suspensión, conjuntamente con las ruedas y las ballestas o muelles.The shock absorbers used preferably in vehicles, regardless of the type, they are part of the suspension system, together with the wheels and crossbows or springs.
Actualmente la guía de vástago tiene alojado en el orificio de paso para dicho vástago de accionamiento, un casquillo cubierto interiormente por un material de reducido coeficiente de rozamiento, siendo la base de este recubrimiento el PTFE (politetrafluoretileno).Currently the stem guide is housed in the through hole for said drive rod, a bushing covered internally by a reduced material coefficient of friction, the basis of this coating being the PTFE (polytetrafluoroethylene).
Esta guía está realizada principalmente por el método de sinterizado de hierro o aluminio y en algunos casos por mecanizado de estos materiales.This guide is mainly done by the sintering method of iron or aluminum and in some cases by Machining of these materials.
A esta pieza o cuerpo de la guía, se le introduce un anillo abierto recubierto interiormente por un material de bajo coeficiente de rozamiento. Dado que la diferencia de diámetros entre el interior de este anillo y el vástago de accionamiento determina el comportamiento hidráulico del amortiguador, se opta por la utilización de anillos abiertos que conforman el diámetro de trabajo después de ser introducidos con apriete en el alojamiento del cuerpo de la guía propiamente dicho.This piece or body of the guide, will be introduces an open ring coated internally by a Low coefficient of friction material. Since the difference of diameters between the inside of this ring and the stem of drive determines the hydraulic behavior of the shock absorber, we choose the use of open rings that make up the working diameter after being introduced with tighten the guide body housing properly saying.
En líneas generales, la guía de vástago para amortiguadores hidráulicos y el procedimiento de fabricación de la misma, objetos de la invención, se obtienen mediante el proceso de inyección de un material plástico, preferentemente con base poliamida. Este proceso permite la obtención de varias piezas en la misma operación de inyección mediante la utilización de huellas múltiples en el molde.In general, the stem guide for hydraulic shock absorbers and the manufacturing procedure of the same, objects of the invention, are obtained by the process of injection of a plastic material, preferably with base polyamide. This process allows obtaining several pieces in the same injection operation by using fingerprints multiple in the mold.
Con el fin de evitar la operación posterior de introducción del anillo en el cuerpo de la guía, se introduce el anillo en el molde y así el cuerpo de la guía de vástago es sobremoldeado, con lo que se obtiene un conjunto imposible de desmontar.In order to avoid the subsequent operation of introduction of the ring into the body of the guide, the ring in the mold and thus the body of the rod guide is overmoulded, resulting in an impossible set of disassemble.
La guía de vástago así construida con este procedimiento, ofrece un anillo embebido en el seno del material plástico inyectado.The rod guide thus constructed with this procedure, offers a ring embedded in the material injected plastic.
Dado que las dimensiones de trabajo del anillo abierto de la técnica conocida, solo se obtienen después de ser introducido en el alojamiento de la guía de vástago, el tipo de anillo a utilizar en la fabricación de la guía de vástago conforme al procedimiento objeto de la invención, debe ser cerrado.Since the working dimensions of the ring open of the known technique, they are only obtained after being introduced in the housing of the rod guide, the type of ring to be used in the manufacture of the compliant rod guide to the process object of the invention, it must be closed.
Este anillo cerrado, en lugar de estar constituido por un casquillo enterizo y mecanizado, puede estar formado también por una banda rectangular de longitud correspondiente al desarrollo del casquillo y de la anchura del mismo, cuyos extremos que llegarán a establecer contacto en la conformación anular, incluyen medios complementarios de conexión machihembrada para lograr un perfecto trabado.This ring closed, instead of being constituted by an integral and mechanized bushing, it can be also formed by a rectangular band of length corresponding to the development of the bushing and the width of the same, whose extremes that will establish contact in the annular conformation, include complementary means of connection tongue and groove to achieve a perfect lock.
En una forma de realización, estos medios complementarios de conexión machihembrada pueden estar determinados por al menos un saliente trapecial o un ensanchamiento circular en uno de sus extremos y correspondientes entrantes complementarios conformados en el extremo opuesto.In one embodiment, these means Complementary tongue and groove connection may be determined by at least one trapezoidal projection or circular widening in one of its ends and corresponding complementary starters shaped at the opposite end.
Este anillo cerrado, enterizo o partido pero con sus extremos de contacto anclados entre sí, es el que se sitúa previamente en el molde y sobre él se sobremoldea el cuerpo propiamente dicho de la guía formando el conjunto inseparable de las características preconizadas.This ring closed, full or split but with its contact ends anchored to each other, is the one that stands previously in the mold and over it the body is overmolded proper of the guide forming the inseparable set of the recommended features.
Para facilitar la comprensión de las características de la invención y formando parte integrante de esta memoria descriptiva, se acompaña una hoja de planos en cuyas figuras, con carácter ilustrativo y no limitativo se ha representado lo siguiente:To facilitate the understanding of characteristics of the invention and forming an integral part of this Descriptive report, a sheet of plans is attached in whose figures, with an illustrative and non-limiting nature represented the following:
Figura 1.- Es una vista en sección longitudinal de una guía de vástago para amortiguadores hidráulicos construida acorde con la invención.Figure 1.- It is a longitudinal section view. of a rod guide for hydraulic shock absorbers built according to the invention.
Figura 2.- Es una vista en planta del desarrollo del casquillo antifricción conformado a partir de una banda rectangular provista en sus extremos de medios de conexión machihembrada.Figure 2.- It is a plan view of the development of the anti-friction bush formed from a band rectangular provided at its ends of connection means tongue and groove
Haciendo referencia a la numeración adoptada en las figuras, podemos ver una guía de vástago referenciada en general con el número (1) y obtenida mediante un procedimiento de inyección de un material plástico y preferentemente con base poliamida mediante el correspondiente molde no representado en las figuras. Como hemos dicho anteriormente, este procedimiento permite la obtención simultánea de varias piezas en una misma operación de inyección mediante la utilización de huellas múltiples en el molde.Referring to the numbering adopted in the figures, we can see a rod guide referenced in general with the number (1) and obtained by a procedure of injection of a plastic material and preferably with base polyamide by means of the corresponding mold not shown in the figures. As we have said before, this procedure allows the simultaneous obtaining of several pieces in the same operation of injection using multiple fingerprints in the mold.
La guía de vástago (1) está formada por el casquillo cerrado (2) y el cuerpo de guía (3) propiamente dicho, sobre-moldeado sobre dicho casquillo (2) que así queda perfectamente asegurado como se ve claramente en la figura 1.The rod guide (1) is formed by the closed bushing (2) and the guide body (3) proper, over-molded on said bushing (2) so It is perfectly secured as seen clearly in the figure one.
En este ejemplo de realización mostrado en las figuras, el anillo cerrado (2) se obtiene a partir del desarrollo de una banda rectangular (4) provista en un extremo del entrante (5) en el que se introduce el saliente (6) previsto en el extremo opuesto y con formas geométricas complementarias para obtener un perfecto ajuste como si de un anillo enterizo mecanizado se tratara, según puede observarse en la sección longitudinal de la guía de vástago mostrada en la figura 1, en cuya mitad inferior se observa la zona del empalme de ambos extremos de la banda (4).In this exemplary embodiment shown in the figures, the closed ring (2) is obtained from the development of a rectangular band (4) provided at one end of the recess (5) into which the projection (6) provided at the end is inserted opposite and with complementary geometric shapes to get a perfect fit as if from a machined integral ring treat, as can be seen in the longitudinal section of the rod guide shown in figure 1, whose lower half is look at the area of the junction of both ends of the band (4).
En la figura 1 se observa cómo el anillo (2) queda embebido en el material constitutivo del cuerpo de guía (3) al ser inyectado en el molde.Figure 1 shows how the ring (2) is embedded in the constituent material of the guide body (3) when injected into the mold.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200502506A ES2277538B1 (en) | 2005-10-14 | 2005-10-14 | VASTAGO GUIDE FOR HYDRAULIC SHOCK ABSORBERS AND MANUFACTURING PROCEDURE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200502506A ES2277538B1 (en) | 2005-10-14 | 2005-10-14 | VASTAGO GUIDE FOR HYDRAULIC SHOCK ABSORBERS AND MANUFACTURING PROCEDURE. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2277538A1 ES2277538A1 (en) | 2007-07-01 |
| ES2277538B1 true ES2277538B1 (en) | 2008-06-01 |
Family
ID=38330560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200502506A Expired - Fee Related ES2277538B1 (en) | 2005-10-14 | 2005-10-14 | VASTAGO GUIDE FOR HYDRAULIC SHOCK ABSORBERS AND MANUFACTURING PROCEDURE. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2277538B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11391340B2 (en) * | 2019-02-14 | 2022-07-19 | Goodrich Corporation | Non-metallic orifice plate with metallic wear insert |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL292618A (en) * | 1963-05-10 | |||
| DE1552120A1 (en) * | 1965-07-19 | 1969-11-20 | White Charles Samuel | Method and device for manufacturing ring bearings |
| DE19600870C1 (en) * | 1996-01-12 | 1997-08-14 | Freudenberg Carl Fa | Low friction bush forming sliding or rotary bearing for rod or shaft |
| CA2363103A1 (en) * | 1999-03-03 | 2000-09-08 | Norton Performance Plastics Corporation | Roller with self-lubricated bearing |
-
2005
- 2005-10-14 ES ES200502506A patent/ES2277538B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2277538A1 (en) | 2007-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202280692U (en) | Steel ball locking type hydraulic cylinder | |
| US7836817B2 (en) | Fluid pressure cylinder | |
| RU2015102630A (en) | HYDRAULIC SHOCK ABSORBER | |
| RU183415U1 (en) | Hydro (pneumatic) cylinder | |
| ES2541526T3 (en) | Manufacture of multi-piece assembled valve components in hydraulic applications with assembly-sealing profiles | |
| US10316868B2 (en) | Fluid pressure cylinder | |
| RU2019140377A (en) | DAMPER | |
| JP6359689B2 (en) | Fluid damper assembly with multi-functional bushing | |
| CN109563855A (en) | Fluid pressure device | |
| ES2277538B1 (en) | VASTAGO GUIDE FOR HYDRAULIC SHOCK ABSORBERS AND MANUFACTURING PROCEDURE. | |
| KR20110110723A (en) | Cap for use in fluid pressure device and fixing method therefor | |
| JP2015190553A (en) | Dust boot, method of manufacturing dust boot, and buffer | |
| CN101493105A (en) | Control valve for cylinder and cylinder with the control valve | |
| ES2577834T3 (en) | Duct valve for a fluid conduit | |
| CN210344136U (en) | Bidirectional controllable airless lockable gas spring | |
| JP6238962B2 (en) | Improvements in shock absorbers | |
| JP2002161903A (en) | Metallic sealing cylinder | |
| CN207315965U (en) | Floating piston | |
| US9772000B2 (en) | Piston and shock absorber including piston | |
| CN205401449U (en) | Plastic inner circle bearing and pulley | |
| EP2851578A1 (en) | Gas spring comprising a system for delaying the return of the rod | |
| JP2020091037A (en) | Hydraulic tensioner having sleeve and method of manufacturing the same | |
| JP2009019642A (en) | Shock absorber, and method of manufacturing shock absorber | |
| CN106337895A (en) | Piston device, method for the production of such a piston device and piston cylinder unit comprising such a piston device | |
| CN112460179A (en) | Bidirectional controllable airless lockable gas spring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EC2A | Search report published |
Date of ref document: 20070701 Kind code of ref document: A1 |
|
| FG2A | Definitive protection |
Ref document number: 2277538B1 Country of ref document: ES |
|
| FD2A | Announcement of lapse in spain |
Effective date: 20211118 |