EP0662568B1 - Vérin linéaire - Google Patents

Vérin linéaire Download PDF

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Publication number
EP0662568B1
EP0662568B1 EP94120983A EP94120983A EP0662568B1 EP 0662568 B1 EP0662568 B1 EP 0662568B1 EP 94120983 A EP94120983 A EP 94120983A EP 94120983 A EP94120983 A EP 94120983A EP 0662568 B1 EP0662568 B1 EP 0662568B1
Authority
EP
European Patent Office
Prior art keywords
linear drive
end plug
drive cylinder
cylindrical tube
cylinder 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.)
Expired - Lifetime
Application number
EP94120983A
Other languages
German (de)
English (en)
Other versions
EP0662568A1 (fr
Inventor
Reinhard Lipinski
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.)
Invest Tech AG
Original Assignee
Invest Tech AG
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 Invest Tech AG filed Critical Invest Tech AG
Publication of EP0662568A1 publication Critical patent/EP0662568A1/fr
Application granted granted Critical
Publication of EP0662568B1 publication Critical patent/EP0662568B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B15/1433—End caps
    • 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
    • F15B15/082—Characterised by the construction of the motor unit the motor being of the slotted cylinder type
    • 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
    • F15B15/1438—Cylinder to end cap assemblies
    • 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
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position

Definitions

  • the invention relates to a linear drive cylinder with the features of the preamble of claim 1.
  • Linear modules are known in which in an elongated, essentially closed or laterally slotted Guide tube is moved over a fluid pressure piston with suitable power transmission means, such as one Piston rod or the side slot of the guide tube machine elements to be driven by penetrating driver operated. With all these linear drives the end of the more or less long guide tube closed a lid or closure piece. This Lid serves to seal the rest of the piston and the guide tube limited chamber. For fixing the respective cover on the guide tube are mostly more extensive edits of the otherwise only from prepared semi-finished cut to length guide tube required.
  • a pressure fluid operated Linear actuator known. This has a longitudinal slit Guide tube that is sealed with a flexible band is and in which a piston is sealed and displaceable is stored, the side slot of the guide tube reaches through with a flat driver. At the end it is Guide tube closed with cylinder-head-like covers. For this purpose, the guide tube is provided with an external thread. Of the each cover has a corresponding internal thread on that engages with the external thread of the guide tube stands.
  • EP 0 113 790 A1 is a pressure medium cylinder with a likewise longitudinally slit, closed at the end Cylinder known.
  • This has a cylinder tube in which a piston is longitudinally displaceable and sealed is stored, the side slot with a reaches through the web-like part, which in connection with a Power transmission element serves as an output.
  • End is the cylinder is closed by a cover, the one something protruding into the interior of the cylinder tube has cylindrical section. Following the cylindrical section, the diameter increases of the lid so that it has an annular shoulder.
  • the Ring shoulder lies on the end face of the Cylinder tube.
  • DE-A-1954888 is a pneumatic Actuator with a cylinder tube known on the cylinder heads are screwed on both ends. Every cylinder head is each provided with a channel over which Pressure medium into and out of the cylinder tube can be directed hereus.
  • the cylinder barrel and the cylinder head must be on the cylinder barrel have a cylindrical outer surface at its end, the can be threaded.
  • One is at rodless cylinders mostly not available.
  • DE-A-2846027 which is the preamble of claim 1 discloses a pressure cylinder known with a cylinder tube in which a piston sealed and axially slidably mounted. To the Piston is attached to a piston rod, which acts as a power transmission means and downforce serves. The piston rod is out led out of the cylinder barrel.
  • the cylinder tube encloses an interior that connects to both ends of the cylinder tube, each with a plug is sealed.
  • Each plug has a cross hole, which is a through hole is trained.
  • the cross hole is aligned with cross holes, which are formed in the cylinder barrel.
  • This through fastening screws are laterally in the Screwed in plug.
  • Two fastening screws hold a sealing plug in pairs.
  • One of the Fastening screws are provided with a through channel, which opens into an interior of the sealing plug. From this a channel leads into the interior of the Cylinder tube.
  • the fastening screws require an internal thread in the cross hole of the sealing plug.
  • the cylinder bore formed in the cylinder tube has, because it has the task, the sliding To guide pistons, inherently a smooth wall.
  • This smooth wall offers a defined contact surface for the formed as a plug, without a processing of the cut to length of the cylinder tube resulting cut or face would be required.
  • the one for fastening the sealing plug in the wall provided at least one transverse bore of the cylinder tube is easy and without much effort in it Cylinder tube can be inserted.
  • the thickness of the Wall hardly matters. Even if the wall is relative should be thin, so thin that a stronger one Stud bolts or a larger threaded hole no longer easily drilled in the longitudinal direction in the wall the cross hole offers you a penetrating one Fasteners secure hold.
  • the fastener that a bolt with a hole or a Can be holding tube, is inserted transversely in the plug and the transverse bore of the cylinder tube.
  • the cylinder barrel has two cross holes, which are diametrically opposite and with the cross hole of the Stopper cursed.
  • the only fastener is inserted through the cross holes and fixed in it. This completes the cylinder tube with a few, inexpensive to manufacture and easy to assemble Sharing achieved.
  • the outlet bores provide a fluid connection between the bore and the channel. Consequently can the linear drive cylinder fluid via a as a fastener serving holding element are supplied.
  • the fastener also forms a connection for the preferably used as a pressure medium Compressed air, so that at the same time as the plug is installed also the compressed air connection on the cylinder tube is prepared.
  • the cross hole of the sealing plug can be smooth-walled be executed.
  • the bolt or the holding tube is then inserted through all cross holes and to both Secured sides of the cylinder barrel with nuts.
  • a threadless bolt can pass through the cross holes inserted and by caulking, riveting or Glue be secured in it. This is regardless whether the bolt is full or hollow, i.e. designed as a holding tube is.
  • the channel can be coaxial to that Be cylindrical bore. This can be through a coaxial to the cylinder tube and the plug provided damping pin through extend from a corresponding one on the piston provided blind hole can be added.
  • the Damping pin connects in conjunction with that on the Piston provided blind bore for the outflowing Pressure medium an increased flow resistance as soon as the pin enters the blind hole protrudes. So that is directed to the plug Piston movement slowed down and a hard hit of the piston on the plug prevented.
  • the of the interior of the cylinder tube is cylindrical, to ensure a good seal between the piston and the wall to enable the cylinder tube.
  • the plug is also cylindrical.
  • a seal is provided for sealing the plug against the cylinder barrel . This can be done in simpler Way in a provided on the plug Ring groove inserted O-ring. If this seal between the transverse bore and the one facing the piston End face of the sealing plug is arranged, superfluous an additional seal of the fastener against the cylinder barrel.
  • sealing plug is a plastic injection molded part.
  • the Sealing plug with the damping pin in one piece be trained, which reduces the manufacturing effort.
  • the plug it is also possible to use the plug as Automat parts, for example made of metal.
  • Fig. 1 is as a linear module or linear drive serving linear drive cylinder 1 shown, in which a cylinder tube made of extruded aluminum 2 forms a base body. With a smooth one Wall 3 describing the cylinder closes the cylinder tube 2 an interior 4. In this is a piston 5 axially displaceable and sealed against the wall 3 stored. The end of the cylinder tube 2 is by a plug 6 closed, only in Fig. 1 one end of the cylinder tube 2 is shown.
  • the cylinder tube 2 is, as in particular, made of 2 can be seen, provided with a longitudinal slot 7, that of one attached to the piston 5, in detail Web 8 is not shown.
  • the web 8 is with a substantially plate or cuboidal driven part 9 connected along the longitudinal extent 10 of the linear drive cylinder 1 a Carry out linear movement according to the piston movement can.
  • the longitudinal slot 7 is through a sealing tape 11 for the overpressures prevailing in the interior 4 are sealed, the sealing tape 11 in the web 8 in one depressurized area of the linear drive cylinder 1 after is guided inside. So that the power transmission from the Piston 5 allows via the web 8 on the driven part 9.
  • the sealing tape 11 is at the front of the Cylinder tube 2 only schematically by means of a 12 indicated screw connection held stationary.
  • the sealing plug 6 is essentially cylindrical and by means of a lying in an annular groove 15 O-ring 16 against the wall 3 of the cylinder tube 2 sealed.
  • the plug 6 has two Circular flat surfaces parallel to each other at a distance 17, 18, with the flat surface 18 the interior 4 faces and the flat surface 17 with the end face of the cylinder tube 2 completes.
  • the Stopper 6 provided with a transverse bore 20 which, as emerges in particular from Fig. 2, with two each other opposite transverse bores 20, 21 of the cylinder tube 2 is aligned.
  • the transverse bores 20, 21, 22 face each other matching diameter and are from a holding tube 23 penetrated, the length of which is greater than the distance the outer sides of the cross section which is essentially rectangular Cylinder tube 2 is.
  • the holding tube is at the end 23 provided with an external thread, screwed onto the nuts 24 are.
  • the holding tube 23 has a through hole 27 and is also approximately in the middle with a total of four outlet bores 28, 29, 30, 31 provided.
  • the outlet bores 28, 29, 30, 31 open into one provided in the support tube 23 shallow groove 32.
  • Die Groove 32 communicates with one in the plug 6 provided axial opening or a channel 33 which in leads the interior 4.
  • the channel 33 extends through one at the Sealing plug 6 integrally formed damping pin 34.
  • the damping pin 34 is coaxial with the sealing plug 6 and the cylinder tube 2 arranged and extends towards piston 5, one for receiving of the damping pin provided blind hole.
  • the damping pin 34 is in connection with the blind bore provided on the piston for the outflowing Pressure medium represents an increased flow resistance, as soon as the damping pin 34 protrudes into the blind hole. So that is directed towards the plug 6 Piston movement slowed down and a hard hit of the Prevents piston on the plug 6.
  • the damping pin 34 is in the piston 5 provided provided blind hole 35, the depth of which is greater than the length of the damping pin 34 and its inner diameter larger than the outer diameter of the damping pin 34 are.
  • the holding tube 23 In order to supply and discharge pressure medium via the Holding tube 23 in the interior 4 and out of this enable, the holding tube 23 is in its through hole 27 provided with an internal thread 35 into which an outer Connection can be screwed. In addition, Avoiding pressure losses following the groove 32 of the holding tube 23 ring grooves 36, 37 provided in the O-rings are inserted.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Pipe Accessories (AREA)
  • Valve Device For Special Equipments (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (19)

  1. Vérin linéaire (1) comprenant
    un corps de vérin (2) qui, à une extrémité au moins, est pourvu de deux trous transversaux (21, 22) mutuellement en vis-à-vis et mutuellement alignés,
    un piston (5) qui est monté coulissant dans la direction longitudinale dans la chambre intérieure (4) du corps de vérin (2),
    un moyen de transmission de force (8) qui constitue une sortie de puissance, est relié au piston (5) et est amené à l'extérieur du corps de vérin (2),
    au moins un bouchon (6) qui est monté étanche côté extrémité dans la chambre intérieure (4) du corps de vérin (2) et comporte un trou transversal (20) débouchant qui est aligné avec les trous transversaux (21, 22) dans le corps de cylindre (2) et présente un canal (33) qui communique avec son trou transversal (20) et débouche dans la chambre intérieure (4) et
    au moins un moyen de fixation (23) allongé qui s'étend transversalement à la direction longitudinale du corps de vérin (2) et pénètre à la fois dans le trou transversal (20) du bouchon (6) et dans le trou transversal (21) du corps de vérin (2),
    au moins un canal (33) qui relie le trou transversal (20) dans le bouchon à la chambre intérieure (4) délimitée par le corps de vérin (2) étant prévu dans le bouchon (6) et le moyen de fixation (23) étant monté étanche dans le trou transversal (20) du bouchon (6) et comportant un trou (27),
    caractérisé par le fait que le trou (27) du moyen de fixation (23) communique avec le canal (33) par l'intermédiaire d'un trou d'écoulement (28), le moyen de fixation (23) traversant les deux trous transversaux (21, 22) du corps de vérin (2) et le trou transversal du bouchon (6) de telle sorte que le bouchon (6) soit tenu dans possibilité de glissement dans la chambre intérieure (4).
  2. Vérin linéaire selon la revendication 1, caractérisé par le fait que le moyen de fixation (23) est pourvu d'une gorge annulaire (32) et présente deux gorges annulaires (36, 37) voisines de la gorge annulaire (30), destinées à recevoir chacune un joint torique pour assurer l'étanchéité du moyen de fixation (23) par rapport au trou transversal (20) à paroi lisse, la gorge annulaire (32) communiquant avec le canal (33).
  3. Vérin linéaire selon la revendication 1, caractérisé par le fait que le trou transversal (20) du bouchon (6) a une paroi lisse.
  4. Vérin linéaire selon la revendication 1, caractérisé par le fait que le trou transversal (20) du bouchon (6) est pourvu d'un filetage intérieur.
  5. Vérin linéaire selon la revendication 1, caractérisé par le fait que le moyen de fixation (23) est une vis qui traverse le corps de vérin (2) et le bouchon (6) et est bloquée par au moins un écrou (24).
  6. Vérin linéaire selon les revendications 2 et 3, caractérisé par le fait que l'axe (23) s'étend dans le bouchon (6) et est en prise avec un filetage intérieur prévu dans le trou transversal (21) du corps de vérin (2).
  7. Vérin linéaire selon la revendication 1, caractérisé par le fait que le moyen de fixation (23) est emmanché sur le corps de vérin (2).
  8. Vérin linéaire selon la revendication 1, caractérisé par le fait que le moyen de fixation (23) est rivé sur le corps de vérin (2).
  9. Vérin linéaire selon la revendication 1, caractérisé par le fait que le moyen de fixation (23) est collé au corps de vérin (2) et/ou au bouchon (6).
  10. Vérin linéaire selon la revendication 1, caractérisé par le fait que le canal (33) est un trou qui est coaxial avec le corps de vérin (2).
  11. Vérin linéaire selon la revendication 1, caractérisé par le fait qu'il est prévu sur le bouchon (6) un embout amortisseur (34) qui est coaxial avec le corps de vérin (2) et est orienté en direction du piston (5).
  12. Vérin linéaire selon les revendications 10 et 11, caractérisé par le fait que le trou s'étend à travers l'embout amortisseur (34).
  13. Vérin linéaire selon la revendication 1, caractérisé par le fait que le bouchon (6) est essentiellement cylindrique.
  14. Vérin linéaire selon la revendication 1, caractérisé par le fait que le bouchon (6), pour assurer l'étanchéité avec le corps de vérin (2), est pourvu d'un joint (16).
  15. Vérin linéaire selon la revendication 14, caractérisé par le fait que le joint (16) est un joint torique (16) placé dans une gorge annulaire (15) aménagée dans le bouchon (6).
  16. Vérin linéaire selon la revendication 14, caractérisé par le fait que le joint (16) sur le bouchon (6) est disposé entre le trou transversal (20) et une face frontale (18) du bouchon (6) tournée vers le piston (5).
  17. Vérin linéaire selon la revendication 1, caractérisé par le fait que le corps de vérin (2) comporte une chambre intérieure (4) continue et une fente longitudinale (7) qui s'étend sur toute sa longueur et/ou par le fait que la fente longitudinale (7) est fermée par une bande d'étanchéité (11) souple tenue stationnaire par rapport au corps de vérin (2) à une extrémité.
  18. Vérin linéaire selon la revendication 1, caractérisé par le fait que le bouchon (6) est une pièce en matière plastique moulée par injection.
  19. Vérin linéaire selon la revendication 11, caractérisé par le fait que le bouchon (6) est réalisé d'un pièce avec l'embout amortisseur (34).
EP94120983A 1994-01-11 1994-12-31 Vérin linéaire Expired - Lifetime EP0662568B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4400483A DE4400483C2 (de) 1994-01-11 1994-01-11 Linearantriebszylinder
DE4400483 1994-01-11

Publications (2)

Publication Number Publication Date
EP0662568A1 EP0662568A1 (fr) 1995-07-12
EP0662568B1 true EP0662568B1 (fr) 1999-08-11

Family

ID=6507661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94120983A Expired - Lifetime EP0662568B1 (fr) 1994-01-11 1994-12-31 Vérin linéaire

Country Status (4)

Country Link
US (1) US5507218A (fr)
EP (1) EP0662568B1 (fr)
AT (1) ATE183287T1 (fr)
DE (2) DE4400483C2 (fr)

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JPH08267329A (ja) * 1995-01-31 1996-10-15 Kyocera Corp 位置決め装置
JP3818752B2 (ja) * 1997-09-24 2006-09-06 Ｓｍｃ株式会社 ロッドレスシリンダ
JP2000018211A (ja) 1998-07-01 2000-01-18 Smc Corp アクチュエータの端部閉塞構造
DE29814578U1 (de) 1998-08-14 1998-10-22 Festo AG & Co, 73734 Esslingen Linearantrieb
GB9907328D0 (en) * 1999-03-31 1999-05-26 Lucas Ind Plc Retention of a member within a hollow body
US6439103B1 (en) * 1999-09-07 2002-08-27 Vector Engineering Co. Hydraulic and pneumatic cylinder construction
DE10105432A1 (de) * 2001-02-07 2002-08-08 Suspa Holding Gmbh Mit Fluid gefüllte Kolbenstangen-Zylinder-Gehäuse-Einheit
US6805038B2 (en) 2002-10-16 2004-10-19 Clark Equipment Company Hydraulic cylinder pivot pin
US20070074964A1 (en) * 2005-10-03 2007-04-05 Vector Engineering Co. Telescoping fluid actuator
US20070272077A1 (en) * 2006-05-24 2007-11-29 Genie Industries, Inc. Linear actuator assembly
JP5757976B2 (ja) * 2013-06-12 2015-08-05 株式会社コガネイ 流体圧シリンダ
JP5746281B2 (ja) * 2013-07-26 2015-07-08 Ｋｙｂ−Ｙｓ株式会社 流体圧シリンダ
IT201800008058A1 (it) 2018-08-10 2020-02-10 Sunstar Eng Gmbh Dispositivo di azionamento idraulico per un motociclo comprendente una valvola galleggiante.

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DE2846027A1 (de) * 1977-10-26 1979-05-03 Abex Corp Verbesserter luftzylinder

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DE2846027A1 (de) * 1977-10-26 1979-05-03 Abex Corp Verbesserter luftzylinder

Also Published As

Publication number Publication date
ATE183287T1 (de) 1999-08-15
US5507218A (en) 1996-04-16
DE59408614D1 (de) 1999-09-16
EP0662568A1 (fr) 1995-07-12
DE4400483A1 (de) 1995-07-20
DE4400483C2 (de) 1996-12-19

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