EP1070855B1 - Vérin avec un corps de cylindre profilé - Google Patents

Vérin avec un corps de cylindre profilé Download PDF

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Publication number
EP1070855B1
EP1070855B1 EP00202619A EP00202619A EP1070855B1 EP 1070855 B1 EP1070855 B1 EP 1070855B1 EP 00202619 A EP00202619 A EP 00202619A EP 00202619 A EP00202619 A EP 00202619A EP 1070855 B1 EP1070855 B1 EP 1070855B1
Authority
EP
European Patent Office
Prior art keywords
longitudinal
tubular body
fitting
slide
actuator according
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.)
Revoked
Application number
EP00202619A
Other languages
German (de)
English (en)
Other versions
EP1070855A1 (fr
Inventor
Gerhardus Fransiscus Hermanus Koertshuis
Daniel Van 't Veen
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.)
Enerpac Tool Group Corp
Original Assignee
Actuant Corp
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19769604&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1070855(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Actuant Corp filed Critical Actuant Corp
Publication of EP1070855A1 publication Critical patent/EP1070855A1/fr
Application granted granted Critical
Publication of EP1070855B1 publication Critical patent/EP1070855B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1428—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means

Definitions

  • the present invention relates to an actuatable by a pressure medium actuator comprising an extruded tubular body, which is provided at the ends with end pieces which close the pipe body, wherein in the tubular body between the end pieces a working space is limited, in which a piston back and forth wherein the actuator tube is further provided with at least one port bore communicating with the working space, which port bore is for receiving a fitting of a pressure medium line, and wherein the actuator at each port bore with an associated securing means for securing the fitting Pressure medium line is provided in the connection bore.
  • the tubular body of aluminum or an aluminum alloy is extruded.
  • the end pieces are fixed in or at the ends of the tubular body, wherein the one end piece is closed and serves as a cylinder bottom, while the other end piece is provided with a central bore through which a piston rod attached to the piston passes, which tail also as a stuffing box is hinted at.
  • the stuffing box is provided with one or more sealing rings.
  • connection bores are respectively provided in the vicinity, but not in one of the end pieces, in such a way that these bores are in communication with the working space in the tubular body.
  • the connection bores are drilled through the wall of the aluminum tubular body and are provided with an internal thread.
  • the fitting of the pressure medium line to be connected to such a connection bore, often a hose, is then provided with an external thread, so that the fitting can be screwed tightly into the bore.
  • This known actuator has the disadvantage that a screw thread made of aluminum and the like is quite sensitive, so that the thread in the bore can be easily damaged by a careless tightening the screw. Further, the provision of an internal thread in the manufacture of the actuator is an undesirably complex action, namely because of the need to remove the small (aluminum) chips that have formed from the tubular body. Especially when the pipe body has a small inner diameter in conjunction with a relatively large length, this is a problem.
  • connection bores are not arranged in the extruded tubular body, but in the end pieces.
  • end pieces are usually made of steel or the like, so that the thread is more robust than aluminum.
  • a disadvantage of the arrangement of the connection bores in the end pieces is that then again usually a further bore, for example at right angles to the connection bore, is necessary in order to realize the connection to the working space in the pipe.
  • the present invention is based on the first aspect of the present invention to overcome the above-mentioned disadvantages and provides an actuator according to claim 1.
  • the first aspect of the invention is based on the finding that it is relatively easy to use an extrusion die in the extrusion of the tubular body, which also forms the Gleitmentsabêt at the same time.
  • the slider By applying the slider, which is pushed over or into the sliding guide, can then be realized in a very simple manner, the fuse of the plugged into the port hole fittings of the pipe.
  • this bore is designed as a bore with a smooth cylindrical wall, which can be obtained by a single drilling operation.
  • a second aspect of the present application relates to locating the position of the piston in an actuator with a tubular body of a non-magnetic metal, in particular aluminum.
  • a plurality of co-extruded longitudinal grooves are provided in the outer periphery of the tubular body, then usually in two of these grooves, a magnetic position sensor is housed so as to determine the two end positions of the piston can.
  • first and second aspects of the invention can be used excellently in combination, and thereby obtain an economically attractive actuator.
  • FIG. 1-4 one of a pressure medium, for example, hydraulic fluid or compressed air, operable, double-acting cylinder 1 is shown.
  • the cylinder 1 comprises a tubular body 2 extruded from aluminum or an aluminum alloy, which is provided at its ends with end pieces 3, 4, which terminate the tubular body 2.
  • end pieces 3, 4 are fixed in the ends of the tubular body 2.
  • a working chamber 5 is delimited between the end pieces 3, 4, in which a piston 6 is movable back and forth.
  • the one end 3 is completed and serves as a cylinder bottom, while the other end 4 is provided with a central bore through which a fixed to the piston 6 piston rod 7 passes, which end 4 is also indicated as a stuffing box.
  • the stuffing box is provided with one or more sealing rings 8, 9.
  • connection bores 10, 11 which are in each case in communication with the working space 5.
  • connection bores 10, 11 serves to accommodate a fitting 12, 13 of an associated pressure medium line, not further shown.
  • the extruded tube 2 is provided during extrusion with a sliding guide section extending in the longitudinal direction of the tube 2, which here is formed by two parallel longitudinal ribs 14, 15, which extend on both sides along the connecting bores 10, 11.
  • each longitudinal rib 14, 15 extend parallel to each other at a distance from each other, each longitudinal rib 14, 15 forms a longitudinal groove on the side facing the other longitudinal rib side.
  • each slider 16, 17 in each of the terminal bores 10, 11 an associated slider 16, 17 can be seen, which is slidably disposed on the sliding guide portion 14, 15.
  • each slider 16, 17 fits with opposite side edges slidably in the longitudinal grooves formed by the longitudinal ribs 14, 15.
  • Each slider 16, 17 is slidable between a position in which the fitting 12, 13 of the pressure medium line inserted into the connecting hole 10, 11, or can be removed, and a layer (see Figures 1, 2, 3), in which the slider 16, 17 cooperates in such a manner with the fitting 12, 13 of the pressure medium line, that this fitting in the connection bore 10, 11 is secured.
  • Each slide 16, 17 is substantially U-shaped with two legs 18, 19, 20, 21, which define an opening for the fitting 12, 13 of the pressure medium line between them.
  • the legs of each slide 16, 17 are designed in such a way that they can cover a locking surface of the fitting 12, 13.
  • each fitting 12, 13 is provided with a circumferential groove in which the legs of the slider 16, 17 will be inserted, so that the groove bottom in the fitting 12, 13 forms the locking surface.
  • Each slide 16, 17 fits - in direction of the connecting hole 10, 11 seen - with little play in the longitudinal grooves, so that the slide 16, 17 causes a positive locking of the fittings 12, 13 in the respective connection bore.
  • the backup is resistant to high hydraulic pressures.
  • the tube 2 has in cross-section (see Figure 3) an annular portion 2a and further a single thick longitudinal rib 2b, the opposite the annular part 2a protrudes.
  • Each of the terminal bores 10, 11 is bored through the thick rib 2b.
  • the tube 2 is extruded from a non-magnetic metal, use of a change of a magnetic field can be made for detecting the bulb in the tube 2.
  • the tubular body 2 is provided with a longitudinally extending fastening part, in this case a longitudinal groove 24, which serves to fasten a plurality of position sensors 2.
  • position sensors 25, 26 are designed to detect a plurality of positions of the piston 6 and operate on the principle of detecting the change or the presence of a magnetic field, which is realized here by a arranged in the piston 6 magnet 31.
  • the sensors 25, 26 are reed switches or Hall sensors.
  • the groove 24 is defined on one longitudinal side by the thick rib 2b, and on the other longitudinal side by a longitudinal rib 29 extending parallel to the thick rib 2b.
  • the carrier 27 can be fixed, for example, by locally deforming the thick rib 29, so that the carrier is clamped. Also, a resilient projection could be formed on the carrier, which engages in an associated recess. As an alternative, adhesive or a locking screw could be used.
  • the carrier 27 is here a plastic part into which the position sensors 25, 26 are cast.
  • the carrier 27 is provided with a molded connection cable 30 which is connected to each of the position sensors 25, 26 via connecting wires embedded in the carrier.
  • each of the position sensors 25, 26 functions as a switch, and that an electrical resistance belongs to each sensor with a deviating from the other position sensors resistance value.
  • the resistors are also embedded in the carrier 27, and each resistor and the associated sensor are connected in series. With such an arrangement, the number of wires in the connecting cable of the carrier can be minimized, for example only three wires.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Claims (10)

  1. Vérin (1) pouvant être actionné par un fluide sous pression, comportant un corps tubulaire extrudé (2), qui est pourvu au niveau de ses extrémités d'embouts (3, 4) fixés dans le cylindre, qui ferment le cylindre, un espace de travail (5) étant délimité dans le cylindre entre les embouts, espace dans lequel un piston (6) se déplace en va-et-vient, le cylindre étant pourvu en outre d'au moins un alésage de raccordement (10, 11), qui est relié à l'espace de travail, lequel alésage de raccordement sert à recevoir un raccord à collerette (12, 13) d'une conduite de fluide sous pression, et le vérin étant pourvu, dans le cas de chaque alésage de raccordement, de moyens de blocage associés destinés à bloquer le raccord à collerette de la conduite de fluide sous pression dans l'alésage de raccordement, caractérisé en ce que le corps tubulaire extrudé, à l'occasion du extrusion, est pourvu d'une section de guidage coulissant (14, 15) s'étendant dans la direction longitudinale du cylindre, et en ce que les moyens de blocage sont conçus comme un coulisseau (16, 17) disposé de façon mobile sur la section de guidage coulissant, le coulisseau étant mobile entre une position dans laquelle le raccord à collerette de la conduite de fluide sous pression peut être enfoncé dans l'alésage de raccordement, ou extrait de celui-ci, et une position dans laquelle le coulisseau coopère avec le raccord à collerette de la conduite de fluide sous pression de telle sorte que ce raccord à collerette est bloqué dans l'alésage de raccordement.
  2. Vérin selon la revendication 1, dans lequel la section de guidage coulissant comporte deux nervures longitudinales (14, 15), qui s'étendent de part et d'autre de l'alésage de raccordement et écartées parallèlement l'une à l'autre, chaque nervure longitudinale formant sur le côté tourné vers l'autre nervure longitudinale une rainure longitudinale, et le coulisseau (16, 17) s'adaptant de façon mobile avec les bords latéraux mutuellement opposés à l'intérieur des rainures longitudinales.
  3. Vérin selon la revendication 2, dans lequel le coulisseau (16, 17) -vu dans la direction de l'alésage de raccordement- s'adapte avec un faible jeu à l'intérieur des rainures longitudinales, de sorte que le coulisseau provoque un blocage par coopération de formes du raccord à collerette dans l'alésage de raccordement.
  4. Vérin selon la revendication 2 ou 3, dans lequel le coulisseau (16, 17) est sensiblement en forme de U avec deux branches, qui délimitent entre elles une ouverture pour le raccord à collerette de la conduite de fluide sous pression, les branches s'adaptant de façon mobile dans les rainures longitudinales des nervures longitudinales, et les branches du coulisseau pouvant recouvrir simultanément une surface de verrouillage du raccord à collerette.
  5. Vérin selon l'une ou plusieurs des revendications précédentes, dans lequel le cylindre (2) présente en section transversale une partie annulaire (2a) et en outre une seule nervure longitudinale (2b) épaisse, qui dépasse de la partie annulaire, l'au moins un alésage de raccordement (10, 11) s'étendant à travers la nervure épaisse.
  6. Vérin selon l'une ou plusieurs des revendications précédentes, comportant un corps tubulaire extrudé (2) en métal amagnétique, le cylindre, à l'occasion du profilage, étant pourvu d'une formation de fixation (24) s'étendant dans la direction longitudinale destinée à fixer plusieurs capteurs magnétiques de position, qui sont étudiés pour détecter plusieurs positions du piston, et les capteurs de position (27, 28) étant logés dans un support commun, qui est poussé à l'occasion du montage du vérin sur ou dans la formation de fixation.
  7. Vérin selon la revendication 6, dans lequel la formation de fixation est une rainure (24).
  8. Vérin selon les revendications 4 et 5, dans lequel la rainure de fixation est définie sur un côté longitudinal par la nervure épaisse (2b), et sur l'autre côté longitudinal par une nervure longitudinale (29) s'étendant parallèlement à la nervure épaisse.
  9. Vérin selon l'une ou plusieurs des revendications 6 à 8, dans lequel le support (27) est une pièce en matière plastique, dans laquelle sont coulés les capteurs de position.
  10. Vérin selon la revendication 9, dans lequel le support est pourvu d'un câble de liaison (30) moulé, qui est relié à chacun des capteurs de position.
EP00202619A 1999-07-20 2000-07-20 Vérin avec un corps de cylindre profilé Revoked EP1070855B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1012653A NL1012653C2 (nl) 1999-07-20 1999-07-20 Actuator met een geÙxtrudeerd buislichaam.
NL1012653 1999-07-20

Publications (2)

Publication Number Publication Date
EP1070855A1 EP1070855A1 (fr) 2001-01-24
EP1070855B1 true EP1070855B1 (fr) 2006-06-07

Family

ID=19769604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202619A Revoked EP1070855B1 (fr) 1999-07-20 2000-07-20 Vérin avec un corps de cylindre profilé

Country Status (4)

Country Link
EP (1) EP1070855B1 (fr)
AT (1) ATE329159T1 (fr)
DE (1) DE50012890D1 (fr)
NL (1) NL1012653C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052284A1 (de) 2008-11-13 2010-05-20 Hoerbiger Automatisierungstechnik Holding Gmbh Anschlußstück für einen Hydraulik-oder Pneumatikzylinder
CH705415A2 (de) 2011-08-16 2013-02-28 Peter A Mueller Fluidanschluss.
CH705623A2 (de) 2011-09-29 2013-04-15 Peter A Mueller Steckkupplung für Fluid und/oder Strom.
IT201700018345A1 (it) * 2017-02-20 2018-08-20 Innotec Tecnologie Innovative S R L Attuatore pneumatico ad albero rotativo per valvole, con sistema di rilevazione della posizione.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61256005A (ja) * 1985-05-10 1986-11-13 Koganei Seisakusho:Kk シリンダ
US4600221A (en) * 1985-09-30 1986-07-15 Bimba Charles W Connection system for flexible tubing
DE3727111A1 (de) * 1987-08-14 1989-02-23 Gewerk Eisenhuette Westfalia Positionsgeber fuer hydraulikzylinder
DE4435983A1 (de) * 1994-10-08 1996-04-11 Zahnradfabrik Friedrichshafen Servozylinder, insbesondere für hydraulische Zahnstangenlenkungen
DE19653222C2 (de) * 1996-12-20 1999-04-01 Soyck Gmbh Halterung für Magnetfeldsensoren

Also Published As

Publication number Publication date
DE50012890D1 (de) 2006-07-20
NL1012653C2 (nl) 2001-01-23
ATE329159T1 (de) 2006-06-15
EP1070855A1 (fr) 2001-01-24

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