EP1495233A1 - Fluidbet tigter kontraktionsantrieb - Google Patents
Fluidbet tigter kontraktionsantriebInfo
- Publication number
- EP1495233A1 EP1495233A1 EP03746284A EP03746284A EP1495233A1 EP 1495233 A1 EP1495233 A1 EP 1495233A1 EP 03746284 A EP03746284 A EP 03746284A EP 03746284 A EP03746284 A EP 03746284A EP 1495233 A1 EP1495233 A1 EP 1495233A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contraction
- clamping
- drive according
- holding arms
- tube
- 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
Links
- 230000008602 contraction Effects 0.000 title claims abstract description 95
- 238000010079 rubber tapping Methods 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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 fluid-actuated contraction drive with a contraction tube, which at Fluidbeetz- a suppression of him limited Beaufschlagungsyogs a psychenk ⁇ ntralement learns and enabling Kraftabgriffsody is equipped at its two end regions surfaces each having a the tap of the generated drive force.
- WO 00/61952 AI and EP 0161750 B1 each show a fluid-operated contraction drive, which contains a contraction hose, to each of which a force tapping unit is attached at the end.
- the contraction tube contains a rubber-elastic tube body and a pull-fiber arrangement which is coaxial with respect to it. If the pressure chamber delimited by the contraction tube is filled with fluidic pressure medium under a certain actuation pressure, the contraction tube experiences a radial expansion in connection with an axial contraction in length. As a result, tensile forces are exerted on the force tapping units, so that these are acted upon in the sense of mutual approximation. In this way, external structures and components which are fixed to the force tapping units can be clamped together and / or moved relative to one another.
- the flat shape of the clamped end region of the contraction tube is expediently based on a compression of the contraction tube, which is hollow as a whole before the force-tapping unit is attached.
- the flat shape of the hose end area also has the advantage that the connection area between the contraction hose and the force tapping unit can be implemented in a very flat, compact design.
- fasteners can be provided which are fixed to the holding arms and positively engage in the clamped end region of the contraction tube.
- the fastening means can be at least partially formed by tooth-like projections of the two holding arms which engage at least in the hose wall section of the contraction hose which is directly acted upon.
- they can be formed in one piece from the material of the holding arms by punching and bending.
- the fastening means can contain at least one fastening bolt fixed to the two holding arms and penetrating the intermediate end section of the contraction tube, for example at least one screw or at least one rivet.
- clamping forces required for clamping the end section can be achieved solely by appropriately pretensioning the holding arms on the basis of their material selection and / or shape.
- clamping means can be formed by the fastening means mentioned above.
- the clamping space which is delimited by the two holding arms and has the flat shape of the end region of the contraction tube, has a front flat clamping section and an eye-like expanded clamping section adjoining it on the rear.
- the contraction tube expediently consists of a tube body with rubber-elastic properties, in the wall of which a tensile fiber arrangement is embedded in a coaxial arrangement.
- the tension fiber arrangement can also sit on the outer circumference of the hose body.
- the tension fiber arrangement expediently consists of a plurality of tension fibers arranged crosswise with high tensile strength and at the same time bendable properties. The flexibility of the contraction tube at the end area concerned is not hindered due to the flexibility.
- FIG. 5 and 6 show an alternative embodiment of the end section II marked in FIG. 1, FIG. 5 showing a perspective view and FIG. 6 showing a longitudinal section according to section line VI-VI from FIG. 5, and
- Fig. 7 shows a further alternative embodiment of the end portion of the contraction drive marked II in Fig. 1 in a perspective view.
- the drawing shows a fluid-operated contraction drive, generally designated by reference number 1. It can be operated with liquid or, preferably, with a gaseous medium.
- contraction tube 2 An essential component of the contraction drive 1 is a tube-like membrane element, referred to as the contraction tube 2, which essentially consists of a tube body 3 made of rubber-elastic material and a tension fiber arrangement 4 arranged coaxially with the tube body 3.
- the tensile fiber arrangement 4 could enclose the hose body 3 like a sock. It is preferably embedded in the wall of the hose body, so that it represents a hose-like structural unit with it.
- the contraction tube 2 is closed in a fluid-tight manner at its two end regions 5, 6. It limits you hermetically sealed, elongated exposure chamber 7 from the surroundings.
- a force tapping unit 8 is attached to each end region 5, 6. This is provided with force tapping means 12, to which structures or components to be moved or braced can be attached directly or indirectly.
- the force tapping means 12 are formed by one or more holes which, for example, permit screw fastening or a hanging device for the components mentioned.
- the force tapping units 8 arranged at the two end regions 5, 6 are at a maximum distance from one another.
- the contraction tube 2 has a certain initial length.
- the pressurization chamber 7 is depressurized.
- the pressurizing chamber 7 is acted upon by fluidic pressure medium which is under a predetermined actuation pressure.
- This pressure medium can be fed in via a fluid line 13 communicating with the pressurization chamber 7.
- the fluid is fed through the wall of the hose body 3, which is equipped with suitable connection means 14 for this purpose.
- the tension fiber arrangement 4 has a large number of individual tension fibers 4 or strands combined into strands, which assume a crossover configuration. Viewed in the radial direction with respect to the longitudinal axis 15 of the contraction drive 1, the tensile fiber arrangement in particular forms a lattice-like structure.
- the contraction tube 2 could also have a different structure which ensures the described operating behavior.
- the contraction tube 2 is characterized by a special configuration of its two end regions 5, 6 and the force-tapping unit 8 which is fixed thereon. This is explained in more detail below with reference to the end region 5 on the left in FIG. 1, which is shown enlarged in FIGS. 2 to 4.
- the design at the other end region 6 is expediently identical. However, there is also the possibility of providing different designs at the two end regions. The above as well as the following explanations apply equally to all the embodiment variants shown in the drawing, unless something else is mentioned in individual cases.
- the contraction tube 2 has a flat shape at its end region 5. This is achieved, in particular, by compressing a contraction tube 2, which has a hollow cylindrical shape, at this end region 5 from opposite transverse sides, so that diametrically opposed tube wall sections 11a, 11b lie flat and close to one another with their inner surfaces.
- the force tap unit 8 contains a force tap part 19, the front area of which, facing the contraction tube 2, forms a fork-shaped clamping head 18.
- the clamping head 18 has two preferably plate-like holding arms 22, 23, which lie next to one another with mutually parallel expansion planes, wherein they define a clamping gap 24 between them.
- the contraction tube 2 engages with its flat shape end region 5 in the clamping intermediate space 24 and is acted upon from opposite sides by the two holding arms 22, 23 and pressed firmly together. In this way, the contraction tube 2 is non-positively clamped in the fork-like clamping head 18 at its end region 5.
- the holding arms 22, 23 each act on the hose wall section 11a or 11b assigned to them, which consequently has a flat shape, the hose wall sections 11a, 11b being pressed tightly together with their mutually facing inner surfaces.
- the resulting sealing area is marked at 25 in FIGS. 3 and 6.
- the two holding arms 22, 23 are expediently formed in one piece with one another. They merge into one another in one piece in a root region, to which is connected a force tapping section 27 which projects axially away from the contraction tube 2 and which is equipped with the force tapping means 12.
- the force tapping section 27 is of flat plate-like design and contains one or more holes through it, which form the force tapping means 12.
- the non-positive clamping of the end region 5 results solely from the mutual prestressing of the holding arms 22, 23, on the basis of their material selection and the design of the clamping head 18.
- the holding arms 22, 23 take one another approximate starting position. To fix the end region 5, they are briefly spread apart by applying force, so that the wiper space 24 is widened. After the subsequent insertion of the end region 5, the holding arms 22, 23 are released, and because of their need to return to the starting position, they firmly press the end region 5 together.
- the clamping head 18 expediently has spring-elastic properties.
- the two holding arms 22, 23 can additionally be prestressed against the end region 5 of the contraction tube 2 from opposite sides by means of clamping means 28 bridging the clamping intermediate space 24.
- clamping means 28 Such a design is in the embodiment of FIGS. 1 to 4.
- One or more fastening bolts 32 serve here as clamping means 28, which are fixed with their respective two ends to the holding arms 22, 23 and which are arranged in the clamping intermediate space 24 Push through the end section 5 of the contraction tube 2.
- They are expediently screws or rivets which rest with their heads on the outside of the respective holding arms 22, 23 facing away from the clamping space 24 and in this way exert the desired clamping force or clamping force on the holding arms 22, 23.
- a particularly high level of security against the contraction tube 2 slipping out of the clamping head 8 is achieved by additional positive fastening measures.
- Such positive fastening measures result in the embodiment of Fig. 1 to 4 of the provided there Cmd Stistsb 'lzen 32. penetrate the end portion 5, which has been previously perforated accordingly. Since the tensile fiber arrangement 4 is also penetrated, a particularly secure connection results.
- fixed fastening means are provided on the holding arms 22, 23, which engage positively in the clamped end area 5 of the contraction tube 2. They consist here of tooth-like projections 33 which protrude from the inner surface of the respective holding arms 22, 23 facing the clamping intermediate space 24 into the clamping intermediate space 24. As can be seen clearly from FIG. 5, they engage positively into the contraction tube 2.
- the arrangement is expediently such that the tooth-like projections 33 provided on a respective holding arm 22, 23 only dip into the hose wall section 11a, 11b which is directly acted upon.
- the tooth-like projections 33 can in particular be formed from one-piece material components of the holding arms 22, 23 and can be produced in that they are punched out and bent out of this material.
- the tooth-like projections can be pressed out of the holding arms when the two holding arms are pressed together.
- the clamping space 24 is designed in a very special way. It has on the front axially facing the contraction tube 2 a front flat clamping section 34, to the rear, towards the force tapping section 27, followed by an eye-like expanded clamping section 35. In the widened clamping section 35 there is a preferably cylindrically designed clamping body 36, which is movable relative to the clamping head 18 and consequently also relative to the force tapping part 17 b.
- the end section 5 of the contraction tube 2 first penetrates the flat clamping section from the front
- the eye-like widened clamping section 35 is largely defined by the design of only one holding arm 22. While the second holding arm 23 has a linear extension, the first holding arm 22 has a bulge or bulge following the root region 36, which defines the eye-like widened clamping section 35 and which is followed by a front section which then again parallel to the second holding arm 23 runs. All of the exemplary embodiments described and the design measures described in connection with them can be combined with one another without further ado.
- Adhesive can additionally be applied to the end regions 5, 6 in the interior of the contraction tube 2 in the sealing region 25, so that the inner surfaces are connected to one another particularly intimately.
Landscapes
- 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)
- Supports For Pipes And Cables (AREA)
- Clamps And Clips (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20205655U DE20205655U1 (de) | 2002-04-12 | 2002-04-12 | Fluidbetätigter Kontraktionsantrieb |
| DE20205655U | 2002-04-12 | ||
| PCT/EP2003/003511 WO2003087588A1 (de) | 2002-04-12 | 2003-04-04 | Fluidbetätigter kontraktionsantrieb |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1495233A1 true EP1495233A1 (de) | 2005-01-12 |
| EP1495233B1 EP1495233B1 (de) | 2006-06-14 |
Family
ID=7969930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03746284A Expired - Lifetime EP1495233B1 (de) | 2002-04-12 | 2003-04-04 | Fluidbet tigter kontraktionsantrieb |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1495233B1 (de) |
| DE (2) | DE20205655U1 (de) |
| WO (1) | WO2003087588A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE502004002011D1 (de) * | 2004-05-26 | 2006-12-28 | Festo Ag & Co | Durch Fluidbeaufschlagung aktivierbare Betätigungseinrichtung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB932111A (en) * | 1959-09-07 | 1963-07-24 | Henry Harrison Merriman | End fittings for fluid actuators |
| JPS4898279A (de) * | 1972-03-30 | 1973-12-13 | ||
| DE2711699A1 (de) | 1977-03-17 | 1978-09-21 | Repapress Ag | Endverschluss |
| DE2802716A1 (de) * | 1978-01-23 | 1979-07-26 | Horst Jansen | Druckbehaelter fuer fluids, pasten o.dgl. |
| WO1986006802A1 (fr) | 1985-05-13 | 1986-11-20 | Georg Hirmann | Unite de puissance |
| DE29906626U1 (de) | 1999-04-14 | 1999-07-15 | Festo AG & Co, 73734 Esslingen | Betätigungseinrichtung |
-
2002
- 2002-04-12 DE DE20205655U patent/DE20205655U1/de not_active Expired - Lifetime
-
2003
- 2003-04-04 WO PCT/EP2003/003511 patent/WO2003087588A1/de not_active Ceased
- 2003-04-04 DE DE50303838T patent/DE50303838D1/de not_active Expired - Lifetime
- 2003-04-04 EP EP03746284A patent/EP1495233B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03087588A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50303838D1 (de) | 2006-07-27 |
| WO2003087588A1 (de) | 2003-10-23 |
| DE20205655U1 (de) | 2002-07-04 |
| EP1495233B1 (de) | 2006-06-14 |
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