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EP2047115B1 - Entraînement linéaire à commande fluidique - Google Patents

Entraînement linéaire à commande fluidique Download PDF

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Publication number
EP2047115B1
EP2047115B1 EP07786171A EP07786171A EP2047115B1 EP 2047115 B1 EP2047115 B1 EP 2047115B1 EP 07786171 A EP07786171 A EP 07786171A EP 07786171 A EP07786171 A EP 07786171A EP 2047115 B1 EP2047115 B1 EP 2047115B1
Authority
EP
European Patent Office
Prior art keywords
linear drive
section
drive according
axially
casing
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.)
Not-in-force
Application number
EP07786171A
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German (de)
English (en)
Other versions
EP2047115A1 (fr
Inventor
Alexander Gaus
Gerald Müller
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
Publication of EP2047115A1 publication Critical patent/EP2047115A1/fr
Application granted granted Critical
Publication of EP2047115B1 publication Critical patent/EP2047115B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the invention relates to a fluid-actuated linear drive, with a drive housing, which has a housing tube and frontally arranged thereon end walls, wherein at least one end wall is designed as respect to the housing tube separate housing cover, which dips into the housing tube with a centering, on the outer circumference of an annular groove with two is disposed axially opposite groove flanks, is received in the at least one annular seal for cooperation with the inner surface of the cross-over housing tube, said arranged on the side of the housing tube outer axial groove flank of the annular groove of an end face of a coaxial side of the housing tube ago the centering portion attached and fixed to the housing cover cap part is formed.
  • the drive housing comprises a closed by two housing cover housing tube, wherein the housing cover immerse each with a centering in the housing tube.
  • an annular groove is introduced into the outer circumference of the centering section by machining, which receives a sealing ring cooperating with the inner surface of the housing tube.
  • a fluid-actuated linear drive which has a housing cover which is screwed with a centering in a housing tube.
  • a cap member is attached, which dips with a central portion in a recess of the housing cover and projects with an exclusively radially extending wall to the outside to define an annular groove on the outer axial side, in which an annular seal is arranged.
  • the cap member has a lateral peripheral wall, with which it engages over the centering portion of the housing cover radially outward axially and whose end face forms the outer groove flank.
  • not both axially oriented groove flanks are an integral part of the centering.
  • the axially closer to the other end wall outer groove flank of the annular groove is part of a relative to the housing cover separate cap part, which is - especially by a mating operation - to complete the annular groove attached to the centering.
  • the axially opposite inner groove flank as well as the groove bottom of the annular groove can continue to be integrally formed on the housing cover, a non-cutting production by injection molding is possible because of the lack of outer groove flank, which in conjunction with an axial demolding offers the possibility existing on the housing cover surfaces of the Ring groove without ridges and thus without the need for a mechanical post-processing produce.
  • one of the end face of the centering axially adjoins the bottom wall of the cap part, which preferably bears against the aforementioned end face of the centering. It is then possible, in particular, to form the end face of the cap part, which points axially from the centering section, as an impact surface for a drive piston arranged linearly displaceably in the interior of the drive housing. As a result, an immediate impact of the drive piston can be avoided on the housing cover.
  • a segmented in the circumferential direction configuration of the peripheral wall is recommended.
  • one or more of the wall segments defined by the segmentation can be elastically bendable in the radial direction and carry latching means which can be brought into engagement with complementary latching means of the housing cover.
  • the bottom wall of the cap member may be axially broken in the central region. In this way, for example, a fluid passage for the supply of the linear drive and discharged fluidic pressure medium is possible. Also, a piston rod can be passed, if it is in the linear drive equipped with a piston rod fluid actuated working cylinder.
  • a particularly stable hold for the cap part arises when the latter projects with a sleeve-shaped axial extension into a recess of the housing cover which is open toward the end face of the centering section and is radially supported on its inner circumferential surface. This is particularly useful in conjunction with the aforementioned functionality as an impact surface for a drive piston.
  • the radial support is also particularly advantageous if the sleeve-shaped axial extension acts as a sliding bearing for a piston rod of the linear drive passing through it coaxially.
  • the transverse forces introduced by the piston rod into the slide bearing are thereby transmitted directly radially into the housing cover, without exerting a tilting moment on the bottom surface and thus on the outer axial groove flank of the annular groove.
  • a ring portion of the sleeve-shaped axial extension axially spaced apart from the bottom wall can be used, which is connected to the bottom wall via a plurality of axially extending connecting webs arranged at a distance from each other in the circumferential direction of the axial extension.
  • the storage area for the piston rod can be placed in the immediate vicinity of its exit region from the housing cover and at the same time limited to the smallest possible axial length.
  • the connecting webs can give a certain flexibility, which facilitates the assembly, because this tolerances are compensated.
  • the spaces between adjacent connecting webs also lead to a significant material savings and allow, if necessary, a fluid passage.
  • the cap member can also fulfill a holding function with respect to a sleeve-shaped axial extension frontally upstream annular scraper, which encloses an optionally existing piston rod to strip contaminants from the piston rod.
  • the cap part is preferably a one-piece plastic part, preferably made of an unreinforced thermoplastic material.
  • several functions can be integrated into the cap part, wherein in addition to the definition of the outer groove flank of the annular groove also the formation of a sliding bearing and / or the support function with respect to an upstream annular scraper added.
  • the housing cover As a material for the housing cover is recommended a fiber-reinforced plastic material, in particular plastic material with glass fiber reinforcement. Also, the housing cover is preferably an injection molded part.
  • either only one or preferably both end walls can be designed in the form of housing covers, which are equipped with a cap part of the type explained. It is possible that the two cap parts of one and the same linear drive are structurally different from each other. This is especially true when the linear actuator as a fluid-operated Working cylinder is configured and only one of the two end walls is penetrated by a piston rod.
  • fluid-operated linear actuator 1 can be operated with any fluidic pressure medium, preferably with compressed air. It is designed in the embodiment as a working cylinder, in particular pneumatic cylinder.
  • the linear drive 1 comprises an elongate drive housing 2 with a housing tube 3, preferably consisting of a thin-walled metal, and two end walls 4 closing the housing tube 3 at its two end sides. Both end walls 4 are in the embodiment designed as separate components in the form of housing covers with respect to the housing tube 3, which should be referred to better distinction as the front housing cover 5 and rear housing cover 6.
  • the housing tube 3 bounded together with the two housing covers 5, 6 an interior space 7, in which a displaceable by fluid force drive piston 8 is housed, which is in sealing contact with the inner surface of the housing tube 3.
  • Both housing covers 5, 6 are each penetrated by their own fluidic control channel 14, 15, which opens at one end with an outer mouth region 14a, 15a to an outer surface of the housing cover 5, 6, where it allows the connection of a fluid line (not shown). These can be used to supply and remove the fluidic pressure medium required for operation.
  • each control channel 14, 15 opens via a coaxial to the interior 7 inner mouth region 16 in each one of two working chambers 17, 18, in which the drive piston 8, the interior 7 divided axially.
  • the two working chambers 17, 18 are acted upon by the associated control channels 14, 15 in a conventional manner so controlled with fluid that the drive piston 8 and with this the piston rod 12 to a direction indicated by a double arrow linear working movement 22 in the axial direction of the longitudinal axis 23 of the Drive housing 2 can be driven.
  • the two housing cover 5, 6 are attached to the housing tube 3 according to the same principle.
  • Each housing cover 5, 6 has a centering portion 24, which has a part of its length - hereinafter referred to as mounting portion 25 - a complementary to the inner contour of the housing tube 3 outer contour.
  • mounting portion 25 - a complementary to the inner contour of the housing tube 3 outer contour.
  • the centering portion 24 of the housing cover 5, 6 is inserted frontally into the housing tube 3.
  • the centering portion 24 On the outer circumference of the fastening portion 25, the centering portion 24 has a radially outwardly open fastening groove 26, in which a peripheral portion of the housing tube 3 is pressed by plastic deformation by means of a rolling process. This results in the housing tube 3 a circumferential bead 27 which engages in the attachment groove 26 to produce a non-positive and positive connection and thereby creates a firm connection between the housing tube 3 and associated housing cover 5, 6.
  • the annular groove 28 is located on the outer circumference of the centering 24, with radially inwardly lying groove bottom 3 and radially outwardly facing slot opening 34, and with two mutually axially facing groove flanks 35, 36.
  • the on the side of the housing tube 3 and therefore closer to each other housing cover lying groove flank is hereinafter referred to as outer groove flank 36, the opposite and lying closer to the mounting portion 25 groove flank inner groove flank 35th
  • the annular seal 32 is in particular a simple O-ring. If desired, more than one annular seal 32 may be disposed in the annular groove 28.
  • the linear drive 1 could also have a continuous piston rod, so that the rear housing cover 6 is penetrated by the piston rod.
  • a rodless design would be possible in which none of the housing cover 5, 6 is penetrated by a piston rod and the power transmission takes place outward, for example, by magnetic force or over a longitudinal slot of the housing tube 3 therethrough.
  • the boundary surfaces of the annular groove 28 are not all formed on the housing cover 5, 6. Only the inner groove flank 35 and the groove base 33 are an integral part of the centering 24.
  • the centering 24 is contoured outside circular cylindrical and graduated here in the axial direction, the groove base 33 is formed by the outer surface of a cylindrical end portion 37 of the centering 24, the itself extends to the centering section 24 final, the other housing cover facing axial end face 38 of the respective centering section 24.
  • the inner groove flank 35 is formed by an annular step which defines the transition between the cylindrical end portion 37 and the above-mentioned attachment portion 25.
  • the attachment portion 25 thus has a slightly larger diameter than the end portion 37.
  • On the centering 24 is from the side of the housing tube 3 forth - so forth from the opposite housing cover - coaxially a cap part 42 attached. This is - releasably if necessary - fixed to the housing cover 5, 6 and in particular on the centering section 24 and has an end face 43, the inner groove flank 35 at a distance axially opposite and defines the outer groove flank 36.
  • the cap member 42 and the housing cover 5, 6 are thus two separate components, which are manufactured independently and then joined together. Both parts can be produced without cutting, in particular by injection molding; without it in the region of the annular groove 28 a cutting reworking would need. Therefore, a cost-effective production is possible.
  • the housing cover 5, 6 expediently consists of a, preferably reinforced by glass fibers, fiber-reinforced plastic material
  • the cap member 42 is made in particular of an unreinforced thermoplastic material. Both parts can be made by injection molding.
  • annular seal 32 can be mounted in principle after the assembly of housing cover 5, 6 and cap member 42.
  • a pertinent assembly that the seal 32 before attaching the cap member 42 on the groove bottom 33 defining portion of the cylindrical Endabiteses 37 is pushed axially. This has the advantage that it does not have to be stretched radially and thus the risk of overuse during assembly is reduced.
  • the cap member 42 includes a substantially cylindrically shaped lateral peripheral wall 44, which is bounded axially on the one hand by the outer groove flank 36 forming end face 43 and to the axially other end a preferably disc-shaped bottom wall 45 connects, located in one of the Longitudinal axis 23 extends perpendicular plane.
  • the construction is similar to a cap.
  • the cap member 42 is attached with the end face 43 ahead of the centering portion 24, which is thereby overlapped by the lateral peripheral wall 44 radially outward in the axial direction.
  • the design is particularly such that the lateral peripheral wall 44 rests with its inner circumference on the outer circumference of the cylindrical end portion 37.
  • the embodiment is preferred in which the attachment exclusively in the context of a plug-in operation in the axial direction according to arrow 46 takes place.
  • the Aufsteckweg is limited by the fact that the bottom wall 45 comes to the end face 38 to the plant.
  • the bottom wall 45 is thus axially upstream of the centering 24 and is suitably on the end face 38 of the centering 24 at.
  • the lateral peripheral wall 44 may be formed annularly closed in its circumferential direction, ie around the longitudinal axis 23. However, in order to simplify the assembly, the segmentation realized in the exemplary embodiment is recommended.
  • the peripheral wall 44 is divided into a plurality of circumferentially consecutive and spaced apart wall segments 48 by circumferentially spaced slot-like spaces 47 extending from the bottom wall 45 and extending to the end surface 43.
  • the wall segments 48 are elastically bendable with respect to the bottom wall 45 in the radial direction. They can therefore be radially deformed for the purpose of connecting the cap member 42 to the housing cover 5, 6. This is used in the embodiment for obtaining a latching connection between the cap part 42 and the housing cover 5, 6.
  • the wall segments 48 have a radially inwardly projecting latching projection 52.
  • a plurality of pairs in the circumferential direction juxtaposed wall segments 48 are each equipped with such a latching projection 52, between each successive pairs of such wall segments 48 each a wall segment 48 without latching projection 52 is arranged.
  • the cap member 42 in the embodiment has four pairs of wall segments 48, each with a latching projection 52nd
  • each of these latching recesses 53 has a length dimensioned in the circumferential direction of the end section 37 such that it is possible for the latching projections 52 to receive a pair of wall segments 48 therein.
  • the distribution of the latching depressions 53 also corresponds to the distribution of the pairs of wall segments 48 provided with latching projections 52.
  • the described type of locking is particularly advantageous, but can also be carried out in other ways.
  • cap part 42 it is possible to glue the cap part 42 to the housing cover 5, 6 or to fix it by other fastening means.
  • the cap member 42 With appropriate shaping of the housing tube 3, for example in the form of a shoulder on the inner circumference, the cap member 42 can also be secured by the housing tube 3 in its position on the housing cover 5, 6.
  • a housing tube 3 with constant over the entire length inner cross section is used.
  • - see embodiment - is the axially facing away from the centering 24 outer end surface 54 of the cap member 42 - which also extends over the bottom wall 45 away - completely free and uncovered.
  • no component of the housing tube 3 protrudes radially in front of this outer end face 54.
  • the outer end face 54 is used as an impact surface 55 for the drive piston 8.
  • the drive piston 8 bounce when he arrived in the context of his working movement 22 in the corresponding end position.
  • the cap member 42 is made of a more resilient material such as the housing cover 5, 6, in this way the intensity of the impact can be reduced. It is also possible, what is not shown further, to use the cap part 42 as a carrier for rubber-elastic buffer means, which further dampens the final impact of the drive piston 8.
  • both housing covers 5, 6 extending to the longitudinal axis 23 coaxial recess 56 which forms a part of the control channel 14, 15 and which is open via the associated mouth region 16 to the adjacent working chamber 17, 18 out.
  • the front housing cover 5 is axially penetrated by its recess 56 and penetrated by the piston rod 12.
  • the recess 56 of the rear housing cover 6 may be formed blind hole-like for lack of hin man Struktur piston rod as shown and closed at the inner mouth region 16 opposite side by a bottom housing 57 formed by the rear cover 6.
  • the pressure medium can thus pass through the cap member 42 for acting on the drive piston 8.
  • the cap part 42 on the housing cover 5, 6 it expediently has a sleeve-shaped axial extension 62, which is fixed at one end to the bottom wall 45 and projects coaxially therefrom, ending with a front end surface 63 opposite the bottom wall 45.
  • the axial extension 62 projects through the inner mouth region 16 into the recess 56, wherein the cross section of the recess 56 and the outer contour of the axial extension 62 are matched to one another such that the axial extension 62 is radially supported by the inner peripheral surface 64 of the recess 56.
  • Characterized the cap member 42 is supported over a large length transversely to the longitudinal axis 23 with respect to the housing cover 5, 6 and can not tilt even in strong impact of the drive piston 8 or otherwise change its position.
  • the space enclosed by the axial extension 62 adjoins the bottom opening 58 directly. At one or more locations, the wall of the axial extension 62 is pierced to provide fluid communication between its interior and the outer mouth portion 14a, 15a of the associated control passage 14, 15 to which the above-mentioned fluid lines can be connected.
  • the two housing covers 5, 6 associated cap parts 42 differ in the length and design of their axial extensions 62. In both cases, the sleeve-shaped Axial projections 62, however, open at both ends, wherein the front end face 63 of the bottom opening 58 axially opposite front opening 65 bounded.
  • the sleeve-shaped axial extension 62 terminates in the recess 56 (in front of the mouth of the outer mouth region 15a). FIG. 11 ).
  • the pressure medium can therefore flow according to double arrow 66 through the front opening 65 between the outer mouth region 15a and the subsequent working chamber 18.
  • the front opening 65 is at least largely obstructed by the axial extension 62 passing through the piston rod 12 and therefore is not available for a viaid mangang.
  • the peripheral wall of the axial extension 62 distributed in the circumferential direction is provided with a plurality of slot-like radial openings 67, which provide a fluid connection between the interior of the axial extension 62 and the associated outer mouth region 14a.
  • the slot-like openings 67 are formed by the spaces between a plurality of connecting webs 68, which extend axially between the bottom opening 58 and one of the bottom wall 58 at a distance coaxially upstream annular portion 72 of the axial extension 62.
  • they are each integrally connected to the bottom wall 45 and the ring portion 72. They are - in particular uniformly distributed in the circumferential direction of the axial extension 62.
  • the connecting webs 68 may extend axially over the entire annular portion 72. In the region of the annular portion 72, the spaces between adjacent circumferentially connecting webs 68 form a groove-like Recesses 67 a, which adjoin each one of the slot-like openings 67.
  • the cap parts 42 for the two housing covers 5, 6 are expediently of the same design. Therefore, the cap portion 62 for the rear housing cover 6 on the just described design with connecting webs 68 and supported by these ring portion 72. In both cap parts 42, the front end face of the axial extension 62 is located on the ring portion 72nd
  • the groove-like depressions 67a allow in addition to the fluid flow 66 also a peripheral fluid flow through the region lying radially between the annular portion 72 and the inner peripheral surface of the recess 56 so that the pressure medium between the outer orifice portion 15a and the slit-like openings 67 can flow over.
  • annular portion 72 in the cap portion 42 of the rear housing cover 6 essentially only a stabilizing function.
  • the annular portion 72 forms a piston bearing 12 coaxially enclosing slide bearing 73 for linear guidance of the piston rod 12th
  • the sliding bearing 73 defining ring portion 72 is provided on its inner circumference with a plurality of circumferentially distributed longitudinal grooves 74, through which the inner peripheral surface of the annular portion 72 is divided into a plurality of circumferentially distributed strip-shaped sliding bearing surfaces 75.
  • the sliding bearing 73 is located not over the entire circumference of the piston rod 12, but only in individual, spaced successive peripheral portions.
  • the segmentation of the sliding bearing 73 into individual sliding bearing surfaces 75 facilitates, inter alia, the production of the preferably one-piece cap part 42 as a whole. In injection molding, a particularly high dimensional accuracy results.
  • the cap portion 42 of the front housing cover 5 still exert a third major function, which is a piston rod 12 concentrically enclosing annular scraper 76 in the recess 56 of front housing cover 5 to fix axially.
  • the scraper 76 is the front end surface 63 of the axial extension 62 upstream and trapped between the latter and an annular step 77 at the front exit region of the recess 56 axially.
  • the assembly takes place in such a way that first the scraper 76 and then the cap part 42 are inserted over the mouth region 16, the latter being able to advance the scraper 76 up to the end position at the step 77.
  • the scraper 76 rests against the outer circumference of the piston rod 12 and wipes off impurities when the piston rod 12 moves into the drive housing 2.
  • the cap part 42 is expediently overall a one-piece component.
  • the inner contour of the axial extension 62 is expediently stepped in the transition region 79 to the annular section 72, so that the cross section enclosed by the annular section 72 is smaller than the adjoining and up to the bottom opening 58 continuous longitudinal section. In conjunction with a piston rod 12 can thus be ensured that except the slide bearing surfaces 75 no further components of the cap member 42 with the piston rod 12 come into contact.
  • the slot-like openings 67 emerge as recesses 78 distributed over the circumference. They increase the flow cross section for the pressure medium used for actuating the linear drive 1.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Claims (18)

  1. Entraînement linéaire à commande fluidique, avec un boîtier d'entraînement (2) qui présente un tube de boîtier (3) et des parois de raccordement (4) placées frontalement sur celui-ci, dans lequel au moins une paroi de raccordement (4) est réalisée sous forme de couvercle de boîtier (5, 6) séparé du tube de boîtier (3), couvercle qui s'enfonce dans le tube de boîtier (3) avec une section de centrage (24) sur la circonférence extérieure de laquelle est placée une rainure annulaire (28) avec deux flancs de rainure (35, 36) opposés axialement, dans lesquelles est logé au moins un joint annulaire (32) destiné à coopérer avec la surface intérieure du tube de boîtier (3) se mettant en prise sur lui, dans lequel le flanc de rainure extérieur axial (36) de la rainure annulaire (28) placé du côté du tube de boîtier (3) est formé par une surface frontale (43) d'une partie formant capuchon (42) rapportée de manière coaxiale sur la section de centrage (24) depuis le côté du tube de boîtier (3) et fixée sur le couvercle de boîtier (5, 6), caractérisé en ce que la partie formant capuchon (42) présente une paroi circonférentielle latérale (44) avec laquelle elle recouvre axialement et à l'extérieur radialement la section de centrage (24) et dont la surface frontale (43) forme le flanc de rainure extérieur (36).
  2. Entraînement linéaire selon la revendication 1, caractérisé en ce que la paroi circonférentielle latérale (44) de la partie formant capuchon (42) est segmentée dans sa direction circonférentielle et présente plusieurs segments de paroi (48) espacés les uns des autres par des interstices (47).
  3. Entraînement linéaire selon la revendication 2, caractérisé en ce que les segments de paroi (48) sont réalisés au moins partiellement souples élastiquement et peuvent s'encliqueter avec la section de centrage (24) pour la fixation de la partie formant capuchon (42), dans lequel au moins un segment de paroi (48) présente de manière avantageuse une saillie d'encliquetage (52) formant saillie radialement vers l'intérieur, qui peut s'engager dans un renfoncement d'encliquetage (53) formé sur la circonférence extérieure de la section de centrage (24) pour l'encliquetage de la partie formant capuchon (42).
  4. Entraînement linéaire selon la revendication 3, caractérisé en ce que, du fait de la prise d'encliquetage, on obtient une fixation immobile en rotation de la partie formant capuchon (42) par rapport à la section de centrage (24).
  5. Entraînement linéaire selon l'une des revendications 1 à 4, caractérisé en ce que la partie formant capuchon (42) présente une paroi de fond (45) avancée axialement par rapport à la surface frontale (38) de la section de centrage (24), paroi qui s'appuie de manière avantageuse contre la surface frontale (38) de la section de centrage (24).
  6. Entraînement linéaire selon la revendication 5, caractérisé en ce que la paroi de fond (45) de la partie formant capuchon (42) forme avec sa surface frontale (54) opposée axialement à la section de centrage (24) une surface de choc (55) pour un piston d'entraînement (8) placé mobile linéairement dans le boîtier d'entraînement (2) et arrivant dans une position extrémale.
  7. Entraînement linéaire selon la revendication 5 ou 6, caractérisé en ce que la paroi de fond (45) est percée axialement dans sa partie centrale.
  8. Entraînement linéaire selon l'une des revendications 5 à 7, caractérisé en ce que la partie formant capuchon (42) présente un prolongement axial (62) en forme de douille qui, en partant de la paroi de fond (45), pénètre dans un évidement (56) du couvercle de boîtier (5, 6) ouvert en direction de la surface frontale (38) de la section de centrage (24) et est soutenu radialement par la surface circonférentielle intérieure (64) de l'évidement (56).
  9. Entraînement linéaire selon la revendication 8, caractérisé en ce que le prolongement axial (62) en forme de douille présente, à distance axialement de la paroi de fond (45), une section annulaire coaxiale (72) qui est reliée à la paroi de fond (45) par l'intermédiaire de plusieurs barres de jonction (68) d'extension axiale et réparties dans la direction circonférentielle du prolongement axial (62).
  10. Entraînement linéaire selon la revendication 8 ou 9, caractérisé en ce que le prolongement axial (62) en forme de douille forme un palier glissant (73) pour une tige de piston (12) de l'entraînement linéaire (1) qui le traverse de manière coaxiale.
  11. Entraînement linéaire selon la revendication 10 en liaison avec la revendication 9, caractérisé en ce que la section annulaire (72) forme le palier glissant (73), la surface circonférentielle intérieure de la section annulaire étant avantageusement subdivisée, par plusieurs rainures longitudinales (74) réparties dans la direction circonférentielle, en plusieurs surfaces de palier glissant (75) espacées les unes des autres dans la direction circonférentielle.
  12. Entraînement linéaire selon l'une des revendications 8 à 11, caractérisé en ce que la surface frontale antérieure (63) du prolongement axial (62) en forme de douille située dans l'évidement (56) du couvercle de boîtier (5,6) forme une surface d'appui pour un racleur annulaire (77) placé en avant coaxialement et tenu sur le côté opposé du couvercle de boîtier (5) pour une tige de piston (12).
  13. Entraînement linéaire selon l'une des revendications 1 à 12, caractérisé en ce que la partie formant capuchon (42) est fixée par encliquetage au couvercle de boîtier (5, 6).
  14. Entraînement linéaire selon l'une des revendications 1 à 13, caractérisé en ce que la partie formant capuchon (52) est enfichée axialement sur le couvercle de boîtier (5, 6).
  15. Entraînement linéaire selon l'une des revendications 1 à 14, caractérisé en ce que le tube de boîtier (3) se met en prise par-dessus la partie formant capuchon (42) sans soutenir celle-ci axialement sur la face frontale axialement opposée à la section de centrage (24).
  16. Entraînement linéaire selon l'une des revendications 1 à 15, caractérisé en ce que la partie formant capuchon (42) est une partie en matière plastique d'un seul tenant et est constituée d'un matériau thermoplastique non renforcé.
  17. Entraînement linéaire selon l'une des revendications 1 à 16, caractérisé en ce que le couvercle de boîtier (5, 6) est constitué d'une matière plastique renforcée par des fibres.
  18. Entraînement linéaire selon l'une des revendications 1 à 17, caractérisé en ce que les deux parois de raccordement (4) sont conformées en couvercles de boîtier (5, 6) munis chacun d'une partie formant capuchon (42).
EP07786171A 2007-07-19 2007-07-19 Entraînement linéaire à commande fluidique Not-in-force EP2047115B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/006399 WO2009010083A1 (fr) 2007-07-19 2007-07-19 Entraînement linéaire à commande fluidique

Publications (2)

Publication Number Publication Date
EP2047115A1 EP2047115A1 (fr) 2009-04-15
EP2047115B1 true EP2047115B1 (fr) 2011-12-21

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EP07786171A Not-in-force EP2047115B1 (fr) 2007-07-19 2007-07-19 Entraînement linéaire à commande fluidique

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US (1) US8240243B2 (fr)
EP (1) EP2047115B1 (fr)
CN (1) CN101755132B (fr)
AT (1) ATE538316T1 (fr)
WO (1) WO2009010083A1 (fr)

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USD843079S1 (en) * 2015-06-24 2019-03-12 Can Do Logistics Llc Plunger device

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US3850080A (en) * 1973-03-28 1974-11-26 Eaton Corp Seal for non-bottoming piston cylinder assembly
US4167134A (en) * 1977-02-28 1979-09-11 Yuda Lawrence F Compact fluid actuator
FR2622672B2 (fr) * 1986-04-24 1990-02-23 Telemecanique Electrique Raccord pneumatique coude pourvu de moyens de reglage de debit unidirectionnel
DE3807889A1 (de) 1988-03-10 1989-09-21 Festo Kg Druckmittelbetaetigbare schlittenartige vorschubeinrichtung
CN1075351A (zh) * 1992-02-12 1993-08-18 冯建光 固体燃料内燃机
DE4311997C2 (de) * 1993-04-13 2001-07-12 Sauer Sundstrand Gmbh & Co Hydraulikmotor
JP2607837B2 (ja) * 1994-03-30 1997-05-07 シーケーディ株式会社 ロッドレスシリンダのシール構造
JP3160891B2 (ja) * 1997-04-29 2001-04-25 豊和工業株式会社 シ−ルバンドの取付構造
DE10049439A1 (de) 2000-10-06 2002-04-18 Festo Ag & Co Hülsenartiges Lagerteil und damit ausgestatteter Arbeitszylinder

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CN101755132A (zh) 2010-06-23
CN101755132B (zh) 2013-05-22
WO2009010083A1 (fr) 2009-01-22
US20090288553A1 (en) 2009-11-26
US8240243B2 (en) 2012-08-14
EP2047115A1 (fr) 2009-04-15
ATE538316T1 (de) 2012-01-15

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