EP1495232A1 - Fluidbetätigter kontraktionsantrieb und zugehöriger kontraktionsschlauch - Google Patents
Fluidbetätigter kontraktionsantrieb und zugehöriger kontraktionsschlauchInfo
- Publication number
- EP1495232A1 EP1495232A1 EP03714915A EP03714915A EP1495232A1 EP 1495232 A1 EP1495232 A1 EP 1495232A1 EP 03714915 A EP03714915 A EP 03714915A EP 03714915 A EP03714915 A EP 03714915A EP 1495232 A1 EP1495232 A1 EP 1495232A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contraction
- hose
- another
- drive according
- 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 81
- 238000010079 rubber tapping Methods 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 14
- 238000009958 sewing Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 2
- 230000007306 turnover Effects 0.000 claims 2
- 238000005452 bending Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004873 anchoring 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
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000004904 shortening Methods 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-operated contraction drive, with a contraction hose, which experiences a length contraction when fluid is applied to a loading space delimited by it, and which can be equipped or equipped at its two end regions with a force-tapping device that enables the generated drive force to be tapped.
- the invention further relates to a contraction hose for a fluid-operated contraction drive.
- 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 device is fastened 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 hose is filled with fluidic pressure medium under a certain actuation pressure, the contraction hose undergoes a radial expansion in connection with an axial contraction in length. As a result, tensile forces are exerted on the force tapping devices, so that these are acted upon in the sense of mutual approximation. In this way, external structures and components that are attached to the directions are fixed, clamped together and / or moved relative to each other.
- Contraction hose has a flat shape at least at one end region and is folded over, the hose sections of the contraction hose which are arranged next to one another as a result of the folding being firmly connected to one another.
- a contraction hose of the type mentioned at the outset which is characterized in that it has a flat shape and is folded over at least at one end region, the hose sections of the contraction hose which are arranged next to one another as a result of the folding being firmly connected to one another.
- the tube ends can be sealed very easily and reliably.
- a safe sealing point can be achieved by changing the direction. But also by pressing the opposite sections of the hose wall against each other Sealing are favored.
- the folded end region is very well suited for securely anchoring a force tapping device that enables the generated driving force to be tapped.
- the hose sections arranged next to one another expediently lie flat against one another, in particular being pressed firmly together.
- the fixed connection of the hose sections arranged next to one another can be achieved, for example, by an adhesive connection, a welded connection or a sewing connection, but also by mutually bolting the hose sections together by means of at least one connecting bolt passing through them. These types of connections can also be combined with one another as required.
- At least one existing connecting bolt for example in the form of a screw or rivet, can also be part of the associated force tapping device or form it.
- at least one connecting bolt has a thread on which the structure to be clamped or moved or the component can be fixed in the context of a screw connection.
- 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 tensile fiber arrangement can also sit on the outer circumference of the hose body.
- the tension fiber arrangement expediently consists of a plurality of cross-arranged tensile fibers 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. 1 is a schematic longitudinal sectional view of a preferred first design of the contraction drive according to the invention
- FIG. 2 shows an enlarged, perspective illustration of the detail of the contraction drive and marked in FIG. 1 at II
- Fig. 3 shows the end section of an alternative embodiment of the contraction drive, again in perspective.
- 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.
- 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 consisting of rubber-elastic material and a tension fiber arrangement 4 arranged coaxially to 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. As a result, it delimits an elongated exposure space 7 that is hermetically sealed from the environment.
- a force tapping device 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 threads, which allow the mentioned components to be screw-fastened.
- the force tapping devices 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.
- a pyrotechnic gas generator not shown.
- the reason for this behavior is the special structure of the contraction tube 2, in particular in connection with the above-mentioned tension fiber arrangement 4.
- the tension fiber arrangement 4 has, in the exemplary embodiment, a large number of individual tension fibers or strands combined to form strands which assume a cross-over configuration.
- the tensile fiber arrangement in particular forms a lattice-like structure.
- the lattice angles change, so that the contraction tube 2 causes a tensile force at the two end regions 5, 6.
- This tensile force is transmitted to the force and / or positively coupled force tapping devices 8, which consequently approach one another in the direction of the tensile force 16.
- the activated state that can be achieved in this way is indicated by dash-dotted lines at 17 in FIG. 1.
- the contraction tube could also have a different structure to ensure the described operating behavior.
- the contraction tube 2 is characterized by a special configuration of its two end regions 5, 6. This is subsequently based on the end region lying on the left in FIG. 1 5 explained in more detail.
- the other end region 6 is expediently of identical design. However, there is also the possibility to design only one of the end areas in the special design.
- the contraction tube 2 has a flat shape at its end region 5. This is achieved in particular by the fact that the contraction tube 2, which has a circular cylindrical shape, is compressed at this end region 5 from opposite transverse sides, so that diametrically opposed tube wall sections 11a, 11b preferably lie flat against one another with their inner surfaces.
- the contraction tube 2 is turned over at said end region 5.
- the envelope line 22 indicated by dash-dotted lines in FIGS. 2 and 3 runs at right angles to the longitudinal axis 15 and at the same time parallel to the plane of expansion of the flat end region 5.
- At least one envelope there is at least one envelope, with expediently only a single envelope being realized.
- at least two tube sections 18, 19 of the end region 5, in particular with a parallel orientation come to lie next to one another due to this folding.
- These hose sections 18, 19 are firmly connected to one another by suitable measures.
- the tube sections 18, 19 obtained by the folding, in the exemplary embodiment two lie flat against one another with the mutually facing outer surface sections.
- the preferably at least substantially flat contact area is identified at 23 in FIGS. 2 and 3.
- the adjacent hose sections 18, 19 are glued together in their contact area 23.
- a welded connection would also be possible.
- a sewing connection 25 is used instead of an adhesive and / or welded connection.
- suitable sewing measures using at least one sufficiently tensile sewing thread, the two adjacent tube sections 18, 19 are firmly connected to one another by sewing. The sewing passes through the contact area 23 transversely to the longitudinal direction 15 of the contraction drive 1.
- Adhesive can additionally be applied to the end region 5 in the interior of the contraction tube 2, so that the adjacent wall regions of the contraction tube 2 are also glued to one another in the interior in order to further optimize the tightness and cohesion.
- hose sections 18, 19 - in the exemplary embodiment they lie one on top of the other - are firmly pressed together.
- Suitable tensioning means for this can be the sewing thread or threads of the sewing connection 25 which may be used.
- the mutual pressing of the adjacent hose sections 18, 19 is achieved exclusively or additionally by at least one connecting bolt 26 which passes through the hose sections 18, 19 arranged next to one another transversely to their longitudinal direction and by suitably shaped clamping heads 27 on the opposite, from the contact area 23 pioneering side surfaces 28, 29 acted upon.
- FIG. 3 only the clamping head 27 placed on the side surface 28 pointing upward there is visible.
- the at least one connecting bolt 26 can be, for example, a screw or a press rivet, the clamping heads 27 being formed by the heads of these connecting elements.
- FIG. 2 shows a design with a plurality of connecting bolts 26 at the relevant end region 5. In contrast to this, only one such connecting bolt 26 is provided at the relevant end region 5 in the embodiment according to FIG. 3.
- the described connecting measures for mutually fixing the hose sections 18, 19 arranged next to one another by the folding can be provided individually or in any combination.
- the connecting bolts 26 arranged on the relevant end region simultaneously form the force-tapping device 8. Since the connecting bolts 26 Enforcing hose sections 18, 19 transversely to the direction of tensile force 16 results in an optimal positive connection and thus reliable power transmission between the contraction hose 2 and the force tap device 8.
- the force tap means 12 can in this case be designed as a thread, which is a screw fastening of the to be clamped and / or enable structures or components to be moved.
- the handling technology also achieves a certain self-locking effect, since when the contraction drive 1 is actuated, the different hose wall layers have to move in opposite directions and can thus be supported against the connecting bolts 26.
- connecting bolt is to be understood to mean any connecting elements which penetrate the hose sections arranged next to one another. Their cross section does not necessarily have to be circular, as in the exemplary embodiment.
- a clamp arrangement could also be placed around them. This could also be part of the force tapping device 8.
- the end regions 5, 6 could also be turned over several times, so that more than two hose sections come to lie side by side.
- a single envelope with the resulting two adjacent hose sections 18, 19 is, however, considered to be particularly advantageous.
- An intermediate part with which the hose sections 18, 19 are then expediently braced could also be arranged between the hose sections 18, 19 lying next to one another. Such an intermediate part could be part of the force tapping device 8.
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)
- Rigid Pipes And Flexible Pipes (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20205654U | 2002-04-12 | ||
| DE20205654U DE20205654U1 (de) | 2002-04-12 | 2002-04-12 | Fluidbetätigter Kontraktionsantrieb und zugehöriger Kontraktionsschlauch |
| PCT/EP2003/003458 WO2003087587A1 (de) | 2002-04-12 | 2003-04-03 | Fluidbetätigter kontraktionsantrieb und zugehöriger kontraktionsschlauch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1495232A1 true EP1495232A1 (de) | 2005-01-12 |
| EP1495232B1 EP1495232B1 (de) | 2005-10-12 |
Family
ID=7969929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03714915A Expired - Lifetime EP1495232B1 (de) | 2002-04-12 | 2003-04-03 | Fluidbetätigter kontraktionsantrieb |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7185580B2 (de) |
| EP (1) | EP1495232B1 (de) |
| DE (2) | DE20205654U1 (de) |
| ES (1) | ES2247526T3 (de) |
| WO (1) | WO2003087587A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5246717B2 (ja) * | 2007-05-11 | 2013-07-24 | 学校法人 中央大学 | 流体注入型アクチュエータ |
| CN105287000B (zh) * | 2015-10-13 | 2017-10-20 | 西安交通大学 | 单气体驱动的柔性微创手术操作臂及制备方法 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2844126A (en) * | 1955-01-20 | 1958-07-22 | Clevite Corp | Fluid actuated motor system and stroking device |
| US3084961A (en) * | 1958-10-31 | 1963-04-09 | Henry H Merriman | Coupling for tube expander |
| 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. |
| US4513997A (en) * | 1982-09-30 | 1985-04-30 | Greenco Corporation | Fitting for an inflatable tube |
| US4664232A (en) * | 1984-04-25 | 1987-05-12 | Bridgestone Corporation | Brake device for robot arm |
| JPS60227003A (ja) * | 1984-04-25 | 1985-11-12 | Bridgestone Corp | 高忠実性の内圧応動弾性収縮筒 |
| BE905465A (nl) * | 1986-09-22 | 1987-01-16 | Beullens Theophile | Hydraulische of pneumatische aandrijfinrichting. |
| US4819547A (en) * | 1988-03-28 | 1989-04-11 | Mirko Kukolj | Axially contractable actuator |
| US5031510A (en) * | 1990-03-22 | 1991-07-16 | Welch Allyn, Inc. | Evacuation spring for hydraulic/pneumatic muscle |
| GB9116114D0 (en) * | 1991-07-25 | 1991-09-11 | Raychem Ltd | Corrosion protection system |
| GB2328981A (en) * | 1997-09-05 | 1999-03-10 | Richard Martin Greenhill | Improved component of mechanical actuator |
| GB2335467A (en) | 1998-03-20 | 1999-09-22 | Richard Martin Greenhill | Improved mechanical actuator |
| CA2351638C (en) * | 1999-01-21 | 2005-01-04 | The Boler Company | Locking mechanism for movable subframe of semi-trailers |
| DE29906626U1 (de) | 1999-04-14 | 1999-07-15 | Festo AG & Co, 73734 Esslingen | Betätigungseinrichtung |
-
2002
- 2002-04-12 DE DE20205654U patent/DE20205654U1/de not_active Expired - Lifetime
-
2003
- 2003-04-03 DE DE50301367T patent/DE50301367D1/de not_active Expired - Lifetime
- 2003-04-03 EP EP03714915A patent/EP1495232B1/de not_active Expired - Lifetime
- 2003-04-03 ES ES03714915T patent/ES2247526T3/es not_active Expired - Lifetime
- 2003-04-03 US US10/503,951 patent/US7185580B2/en not_active Expired - Fee Related
- 2003-04-03 WO PCT/EP2003/003458 patent/WO2003087587A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03087587A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US7185580B2 (en) | 2007-03-06 |
| DE20205654U1 (de) | 2002-07-04 |
| ES2247526T3 (es) | 2006-03-01 |
| US20050076778A1 (en) | 2005-04-14 |
| DE50301367D1 (de) | 2005-11-17 |
| WO2003087587A1 (de) | 2003-10-23 |
| EP1495232B1 (de) | 2005-10-12 |
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