EP1602831A1 - Dispositif d'actionnement activé par un fluide sous pression - Google Patents

Dispositif d'actionnement activé par un fluide sous pression Download PDF

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Publication number
EP1602831A1
EP1602831A1 EP04012388A EP04012388A EP1602831A1 EP 1602831 A1 EP1602831 A1 EP 1602831A1 EP 04012388 A EP04012388 A EP 04012388A EP 04012388 A EP04012388 A EP 04012388A EP 1602831 A1 EP1602831 A1 EP 1602831A1
Authority
EP
European Patent Office
Prior art keywords
head piece
actuating device
hose
axial
inner part
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.)
Granted
Application number
EP04012388A
Other languages
German (de)
English (en)
Other versions
EP1602831B1 (fr
Inventor
Achim Schantze
Alexander Müller
Bernd Lorenz
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.)
Festo SE and Co KG
Original Assignee
Festo SE and Co KG
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 Festo SE and Co KG filed Critical Festo SE and Co KG
Priority to EP04012388A priority Critical patent/EP1602831B1/fr
Priority to AT04012388T priority patent/ATE345447T1/de
Priority to DE502004002011T priority patent/DE502004002011D1/de
Priority to US11/124,737 priority patent/US20050265870A1/en
Publication of EP1602831A1 publication Critical patent/EP1602831A1/fr
Application granted granted Critical
Publication of EP1602831B1 publication Critical patent/EP1602831B1/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
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • F15B15/103—Characterised by the construction of the motor unit the motor being of diaphragm type using inflatable bodies that contract when fluid pressure is applied, e.g. pneumatic artificial muscles or McKibben-type actuators

Definitions

  • the invention relates to a activatable by Fluidbeetzschlagung Actuator, with an intervening two head pieces extending contraction tube, the at Fluidbeetzung his hose interior in the Sense of radial expansion is applied and thereby at the same time in the sense of mutual r engagement acting axial tensile forces on the headers exerts, wherein the contraction tube made of a material with rubber elastic Features existing tube body and a under coaxial arrangement in the wall of the hose body having embedded strand structure, and wherein the contraction tube at least one head piece thereby he is attached with his associated hose end section clamped in an annular clamping gap that is, from the outer circumference of an axially into the contraction tube immersed header interior and the inner circumference one the contraction tube at the level of the head piece inner part Coaxially encompassing head piece outer part is defined.
  • This type is a made of a rubber elastic Hose body and a coaxial in the hose body embedded strand structure composite contraction tube with both hose end sections on each attached to a head piece.
  • the head pieces contain a headpiece inner part immersed in the contraction tube and an associated hose end portion overall head piece outer part, which after Designed a type of union nut and with the head piece inner part is screwed. Between the two parts becomes defines an annular nip in which the associated Hose end section clamped by pressing is. The pressing process results from the axial screwing the two parts of the head piece in conjunction with a conical course of the clamping gap.
  • the Tube interior of the contraction tube with under filled with a certain operating pressure stagnant pressure medium. This causes a radial expansion of the contraction tube with resulting axial contraction tendency, so that tensile forces are exerted on the head pieces which are the head pieces in the sense of a mutual Approaching. In this way, external Structures or components that are fixed to the head pieces are, clamped together and / or relative to each other to be moved.
  • the outer circumference the head piece inner part and the inner circumference of the Head piece outer part within the clamping gap in the axial Are sawtooth-shaped profiled, with the flat Tooth flanks of the axial passage penetrated by the contraction tube Clamping gap opening facing that the two sawtooth profiles are arranged so that their teeth are on lying in the same axial height, in pairs radially opposite one another, and that the headboard outer part than under radial deformation with the enclosed by it Hose end portion formed radially compressed compression sleeve is.
  • the compression sleeve is expediently before the radial compression from the axial nip opening opposite Front coaxial with the head piece inside pluggable until by cooperating with each other Stop surfaces an axial relative position is achieved in which the pairwise radial allocation of teeth of the sets of sawtooth profiles. This makes possible a very fast production process without expensive adjustments.
  • the compression sleeve has an annular, Having radially inwardly projecting projection, in the radial compression in an annular, radially outwardly open fixing groove of the head piece inner part dips and in this way the desired axial relative position of the two parts of the head piece pretends.
  • the nip may be at the axial nip opening axially opposite front in a radially outgoing, between the head piece inner part and the Press sleeve defined annular gap pass, which pressed the Hose body material damage-free Dodge allows.
  • the sawtooth profiles are preferably arranged such that their generatrices defined by the tooth tips parallel to each other. This results in a uniform Pressing the entire length of the clamped Hose end section while avoiding local overstress.
  • the strain of the contraction tube in the area the axial nip opening can be significantly reduced be when the rear end portion located there the clamping gap formed without teeth and smooth surface is.
  • the sawtooth profile then ends before reaching the nip opening.
  • Height of the teeth of the sawtooth profiling so to choose that it corresponds to approximately 1 ⁇ 4 of the wall thickness of the Schlauchgropers.
  • the exemplified in the drawing actuator 1 contains two axially spaced apart first and second head pieces 2, 3, which have a linearly extending contraction tube 4 firmly together are connected. At least in the deactivated state of the actuator 1, the contraction tube 4 has been preferred a substantially hollow cylindrical shape.
  • the contraction tube 4 in the embodiment over a material with rubber-elastic features existing elongated tubular body 5.
  • Material is in particular rubber or an elastomeric material used.
  • Strand structure 6 embedded by the material of the hose body completely enclosed and coaxial with the hose body 5 is arranged.
  • the structural configuration of the contraction tube preferably corresponds 4 as described in WO 00/61952 A1 is.
  • the following explanations of the strand structure 6 are therefore limited to the essentials. Because of Further details will be given on the content of the aforementioned Reference is made.
  • the strand structure 6 has a crossover configuration arranged bending flexible strands 7a, 7b with high Tensile strenght. These strands are grouped into two strand groups, on the one hand strands 7a and on the other the strands 7b included, the strands 7a, 7b within a respective strand group with the same longitudinal orientation run side by side.
  • the two strand groups themselves are arranged in a crossover configuration, as shown in FIG 1 is indicated in the enlarged section, the Strand structure with a radial view with respect to the longitudinal axis 9 the actuator 1 reproduces.
  • the strand groups are constantly at a radial distance from each other held. Increased friction inducing immediate contacts between the strands 7a, 7b of the two strand groups can be excluded in this way.
  • the contraction tube 4 is with its two axial Hose end sections 10 - in the drawing only in conjunction seen with the cut shown left header 2 - At the respectively associated head piece 2, 3rd determined that on the one hand a fluid-tight connection between the hose body 5 and the respective head piece 2, 3 present and on the other hand by the strand structure 6 tensile forces to the respective head piece 2, 3 are transferable.
  • the hose interior 13 opens at least one fluid channel 14, the at Embodiment, the first header 2 outside the plane interspersed lying down.
  • the outer end of the fluid channel 14 is formed so that a not shown Fluid line is attachable, with the connection to a Pressure source can be produced.
  • fluidic pressure medium for example Compressed air
  • the actuator 1 is gaseous Pressure medium, in particular compressed air, operated. It is suitable but also for operation with hydraulic fluid, for example with oil or water.
  • Each headpiece 2, 3 is accessible from outside Position equipped with force tapping 17. These are formed in the embodiment of a threaded portion. They allow attachment of the respective head piece 2, 3 on a non-illustrated component. For example it would be possible, the first head piece 2 with his Kraftabgriffsstoffn 17 stationary to a support structure fix and the other head piece 3 with a relative to the Holding structure to moving machine part.
  • the force taps 17 are usually connected to such components, which if necessary pulled together with a certain force should be.
  • the activation of the actuator is in Hose interior 13 constructive operating pressure causes a Actuation of the contraction tube 4 in the sense of radial expansion.
  • the contraction tube 4 simultaneously in the sense of an axial contraction is applied, with the resulting axial tensile forces in the sense of mutual ruzement with the Head pieces 2, 3 act. That way, at the two Head pieces 2, 3 fixed components relative to each other moves become.
  • the special movement and deformation behavior of the contraction tube 4 results from the already mentioned integrated Strand structure 6. Due to the cross-over configuration, which in the embodiment of an opposing helical course of the two strand groups with respect to the longitudinal axis 9 results arise diamond-like grid areas. By the internal pressure of the contraction tube 4 becomes a displacement caused the diamond angle, which ultimately described the Effect brought about.
  • the nip 18 is located radially between the outer periphery a header inner part 22 and a header inner part 22 coaxially enclosing head piece outer part 23rd
  • the clamping gap 18 with an axially oriented annular clamping gap opening 24 provided to each other head piece 3, 2 indicates and through which the Contraction tube 4 engages in the nip 18.
  • the headpiece inner part 22 is expediently the one Component of the respective head piece 2, 3, with the Kraftabgriffsschn 17 is provided. It dives with one exemplary bolt-like first attachment portion 25th from the front side a little way into the contraction tube 4 in, wherein the outer circumference of this attachment portion 25 provided with a first sawtooth profile 27 is. At the axial height with the first attachment portion 25th becomes the headpiece inner part 22, under coaxial interposition the hose end portion 10, of a sleeve-shaped Attachment portion 26 of the head piece outer part 23rd enclosed, the inner circumference with a second sawtooth profile 28 is provided.
  • the individual teeth 32, 33 of the sawtooth profiles 27, 28 are designed annular, with the longitudinal axis 9 concentric Course, whereby they are in the direction of the longitudinal axis 9, that is axially, are arranged successively, from which in the axial direction a sawtooth-shaped profiling results.
  • the sawtooth profiles are 27, 28 are designed so that their flat tooth flanks 34 of the nip opening 24 and thus the respective opposite facing another headpiece.
  • the steep tooth flanks 35 forward to the contraction tube 4 opposite front end of the respective head piece 2, 3.
  • the two sawtooth profiles 27, 28 are arranged so that their teeth respectively lie in pairs at the same axial height, so that in the axial direction, ie in the direction of the longitudinal axis 9, a Variety of pairs of teeth results, each with a Tooth 32 of the first sawtooth profile 27 and a tooth 33 of the second sawtooth profile 28 radially opposite one another.
  • Several such radial "tooth planes" 36 are dash-dotted in FIG clarified.
  • the head piece outer part 23 forms a compression sleeve 37 and is under radial deformation with the one enclosed by it Hose end portion 10 radially compressed, wherein the Hose end portion 10 through the first engaging in it Attachment portion 25 of the head piece inner part 22 of supported radially inward. Due to this press connection are the teeth 32, 33 in the wall of the hose body 5 pressed while the thereby displaced tubular body material received by the tooth spaces 38 becomes. In this way, the entire profile is profiled sawtooth Clamping gap 18 filled by the material of the hose body 5. The resulting positive interlocking cause in conjunction with the strong radial pressure a firm hold of the hose end portion 10 and prevent Its extraction even when very high tensile forces.
  • the compression sleeve 17 is supported against the attacking Tensile forces axially on the head piece inner part 22 from.
  • the head piece inner part 22 via a in the embodiment the axial front side of the clamping gap 18 axially upstream first stop surface 42, which is oriented axially forward is, therefore pointing away from the contraction tube 4.
  • This first Stop surface 42 has expediently annular shape and is located at a nip 18 at the Clamping gap opening 24 bounding opposite front side, radially outwardly projecting annular collar 44 of the head piece inner part 22.
  • the annular collar 44 thus protrudes radially over the first sawtooth profile 27 addition.
  • first stop surface 42 facing and is this axially opposite. It is located at a second attachment portion 26 axially upstream annular projection 45, which projects radially inward and the annular collar 44 at the Clamping gap 18 engages opposite front axial side.
  • the two stop surfaces 42, 43 are not only the power transmission, but also the positioning of the compression sleeve 37 at their assembly.
  • the compression sleeve 37 according to FIG. 3 is such radially widened, that the radial distance between the the tooth tips of the teeth 32, 33 defined first and second Lateral surfaces of the two sawtooth profiles 27, 28 of the wall thickness of the contraction tube 4 corresponds or slightly is larger.
  • the inner diameter of the annular projection 45 is at the same time slightly smaller than the outer diameter of the Ring collar 44, so that sets a radial overlap.
  • the annular collar 44 acts as a plug-in stop for the contraction tube 4.
  • the contraction tube 4 is so far from the back on the head piece inner part 22nd plugged until he with his face 54 on the collar 44 reaches the plant.
  • the annular gap 55 expands in the embodiment up in the area in which extends radially between the Ring collar 44 and this enclosing section of Press sleeve 37 is located.
  • pressing the compression sleeve 37 reduced the radial height of the annular gap 55, how to a Comparison of Figures 3 and 2 can be easily seen.
  • the first stop surface 42 forms in the embodiment the edge of a designated as Fixiernut 57 annular groove, the the annular collar 44 is axially upstream and the second edge is located at a further annular collar 58, the distance lies before the annular collar 44.
  • the outer diameter of the other Ringbund 58 is less than that of the definition the Aufsteckposition serving collar 44 and is something less than the inner diameter of the still undeformed annular projection 45. In this way, the annular projection 45 at the slip-on over the other annular collar 58 slide away.
  • the subsequent radial compression he dives into the Fixierut 57 a, so that the compression sleeve 37 also at one after front-directed movement relative to the header inner 22 is prevented with certainty.
  • the defined by the two lateral surfaces 46, 47, in Longitudinal section of apparent generatrices of the two sawtooth profiles 27, 28 suitably have a parallel to each other Course.
  • the individual teeth 32, 33 with each other expediently identical. To this The result is a constant surface pressure along the entire, of the sawtooth profiles 27, 28 covered clamping zone.
  • a respective sawtooth profile 27, 28 to provide a tooth. It has also proven to be advantageous as tooth height a quarter of the wall thickness of the hose body to be fixed 5 to choose.
  • the contraction tube has 4 in the deactivated basic state over outer diameter of 10, 20 or 40 mm, which is a number of teeth of 12, 18 and 29 has proved to be useful.
  • the tooth height is in particular the same for all these sizes.
  • the contraction tube 4 When assembled, the contraction tube 4 has Area of the nip opening 24 expediently a something larger diameter than disassembled. This results in particular by the itself in the slip-on the contraction tube 4 conically tapered nip course.
  • the contraction tube 4 experiences in the area the nip opening 24 and in which axially directly adjoining rear end portion 62 of the Clamping gap 18 a slight bulge.
  • clamping gap 18 expediently gearless and smooth surface educated. This will increase the load on the contraction tube 4 minimized in the transition region to the nip 18.
  • the radial Distance between the two lateral surfaces 46, 47 of the two Sawtooth profiles 27, 28 in the assembled state of the Press sleeve 37 at least the radial dimensions of the in the Wall of the tube body 5 embedded strand structure 6 corresponds and preferably is slightly larger.
  • Such Configuration is shown in FIG. 2. This is achieved that the strand structure through which in the hose body 5 impressing teeth 32, 33 is not damaged.
  • the strand structure retains 6 also in the assembled state of the respective head piece 2, 3 in the longitudinal direction of the contraction tube 4 an at least substantially linear shape. If the sawtooth profiles 27, 28 were axially offset from one another, could each have a tooth of each sawtooth profile of the Contraction tube in the radially opposite interdental space push in, resulting in a wave-shaped course the strand structure 6 could result, with the result of subsequent Longitudinal expansions that are detrimental to strength would. Due to the special tooth arrangement is this disadvantage counteracted.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Medicines Containing Plant Substances (AREA)
EP04012388A 2004-05-26 2004-05-26 Dispositif d'actionnement activé par un fluide sous pression Expired - Lifetime EP1602831B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04012388A EP1602831B1 (fr) 2004-05-26 2004-05-26 Dispositif d'actionnement activé par un fluide sous pression
AT04012388T ATE345447T1 (de) 2004-05-26 2004-05-26 Durch fluidbeaufschlagung aktivierbare betätigungseinrichtung
DE502004002011T DE502004002011D1 (de) 2004-05-26 2004-05-26 Durch Fluidbeaufschlagung aktivierbare Betätigungseinrichtung
US11/124,737 US20050265870A1 (en) 2004-05-26 2005-05-09 Actuating means able to be activated by fluid action

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04012388A EP1602831B1 (fr) 2004-05-26 2004-05-26 Dispositif d'actionnement activé par un fluide sous pression

Publications (2)

Publication Number Publication Date
EP1602831A1 true EP1602831A1 (fr) 2005-12-07
EP1602831B1 EP1602831B1 (fr) 2006-11-15

Family

ID=34925125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04012388A Expired - Lifetime EP1602831B1 (fr) 2004-05-26 2004-05-26 Dispositif d'actionnement activé par un fluide sous pression

Country Status (4)

Country Link
US (1) US20050265870A1 (fr)
EP (1) EP1602831B1 (fr)
AT (1) ATE345447T1 (fr)
DE (1) DE502004002011D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018205891B3 (de) 2018-04-18 2019-02-21 Festo Ag & Co. Kg Durch Fluidbeaufschlagung aktivierbare Betätigungseinrichtung mit Rastmechanismus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007017417B4 (de) 2007-04-13 2011-06-30 FESTO AG & Co. KG, 73734 Aktuator
DE102007017419B3 (de) * 2007-04-13 2008-05-29 Festo Ag & Co. Kontraktionsantrieb
JP6889992B2 (ja) * 2016-09-02 2021-06-18 株式会社ブリヂストン 流体圧アクチュエータ
CN107041341B (zh) * 2017-05-22 2023-10-31 吉林省养蜂科学研究所（吉林省蜂产品质量管理监督站、吉林省蜜蜂遗传资源基因保护中心） 一种蜜蜂人工授精针头拉制方法及其拉制器
GB2586118A (en) 2019-06-14 2021-02-10 Actuation Lab Ltd Contractile device for use as an actuator, pump or compressor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196413A (ja) * 1984-03-21 1985-10-04 Hitachi Ltd アクチユエ−タ
JPH05200978A (ja) * 1991-05-09 1993-08-10 Nichifu Tanshi Kogyo:Kk 電線識別表示具への識別記号印字装置
WO2000061952A1 (fr) * 1999-04-14 2000-10-19 Festo Ag & Co. Dispositif d'actionnement
WO2003087588A1 (fr) * 2002-04-12 2003-10-23 Festo Ag & Co Systeme de commande de contraction a actionnement fluidique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243208A (en) * 1964-06-04 1966-03-29 Atlas Copco Ab Compressed sleeve coupling for flexible hoses
US3885819A (en) * 1972-11-21 1975-05-27 Herbert Egerer Compressed air hose connection
US4293150A (en) * 1977-01-17 1981-10-06 Resistoflex Corporation Fluid conduit assembly
US4653779A (en) * 1986-03-17 1987-03-31 Dayco Products, Inc. Hose coupling and method of making the same
TW375230U (en) * 1999-01-13 1999-11-21 Hong-Yue Huang Hydraulic adapters which help to prevent the broken of the inner wall of the oil tube from being scratched during installation
US6394506B1 (en) * 2000-08-29 2002-05-28 The Goodyear Tire & Rubber Company Hose coupling
US6827375B2 (en) * 2001-12-13 2004-12-07 Wellstream International Limited End fitting tubular members and method of applying same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196413A (ja) * 1984-03-21 1985-10-04 Hitachi Ltd アクチユエ−タ
JPH05200978A (ja) * 1991-05-09 1993-08-10 Nichifu Tanshi Kogyo:Kk 電線識別表示具への識別記号印字装置
WO2000061952A1 (fr) * 1999-04-14 2000-10-19 Festo Ag & Co. Dispositif d'actionnement
WO2003087588A1 (fr) * 2002-04-12 2003-10-23 Festo Ag & Co Systeme de commande de contraction a actionnement fluidique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 044 (M - 455) 21 February 1986 (1986-02-21) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 639 (M - 1515) 26 November 1993 (1993-11-26) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018205891B3 (de) 2018-04-18 2019-02-21 Festo Ag & Co. Kg Durch Fluidbeaufschlagung aktivierbare Betätigungseinrichtung mit Rastmechanismus

Also Published As

Publication number Publication date
US20050265870A1 (en) 2005-12-01
EP1602831B1 (fr) 2006-11-15
ATE345447T1 (de) 2006-12-15
DE502004002011D1 (de) 2006-12-28

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