WO2007083333A1 - Actuating device - Google Patents

Actuating device Download PDF

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Publication number
WO2007083333A1
WO2007083333A1 PCT/IT2006/000442 IT2006000442W WO2007083333A1 WO 2007083333 A1 WO2007083333 A1 WO 2007083333A1 IT 2006000442 W IT2006000442 W IT 2006000442W WO 2007083333 A1 WO2007083333 A1 WO 2007083333A1
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WO
WIPO (PCT)
Prior art keywords
shaft
plate
device according
housing
rotation
Prior art date
Application number
PCT/IT2006/000442
Other languages
French (fr)
Inventor
Vittorio Piantoni
Original Assignee
Vittorio Piantoni
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
Priority to ITBS2006A000011 priority Critical
Priority to ITBS20060011 priority patent/ITBS20060011A1/en
Application filed by Vittorio Piantoni filed Critical Vittorio Piantoni
Publication of WO2007083333A1 publication Critical patent/WO2007083333A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/068Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/061Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement by unidirectional means

Abstract

The object of the present invention is an actuator device (1), for example pneumatic, comprising a housing (2), a translatable plate (6) and a rotating shaft (20). The plate (6) is engaged with said shaft (20) and the plate (6) and the shaft (20) are connected to one another for causing a predetermined rotation of the shaft (20) at a predetermined translation of the plate (6). The plate (6) exhibits plate-shaft sealing means.

Description

"Actuating device"

[0001] The object of the present invention is a rotary- actuator device, that is, an actuator device, for example pneumatic or oil-pressure or in any case operating by a fluid under pressure, for which the rectilinear motion of a piston is converted into a rotary motion of a shaft. [0002] Several embodiments relating to rotary actuators, for example pneumatic, exist. [0003] A first known embodiment comprises a cylinder, a piston' translatable within the cylinder, and a rotary shaft arranged perpendicular to the piston, wherein the piston exhibits a rack portion, whereas the rotary shaft is integral with a toothed wheel . The connection between rack and toothed wheel allows transforming the rectilinear motion of the piston into the rotary motion of the shaft .

[0004] Examples of such embodiments are described in the Italian utility models IT 189103, IT 221539, in the Italian invention patents IT 1251041, IT 1271225 and in the Italian utility model IT 233519.

[0005] A further known solution comprises a cylinder, a piston translatable within the cylinder, a rotary shaft arranged perpendicular to the piston, and a linkage that connects the piston head to the rotary shaft. The linkage allows pulling in rotation the rotary shaft while the piston translates.

[0006] An example of such embodiment is shown in the METSO Automation brochure called "Pneumatic Cylinder Actuators, series B", number 11/2005.

[0007] A further known embodiment comprises a cylinder, a piston translatable within the cylinder, a rotary shaft arranged parallel to the piston, and two cams, the first integral to the piston head and the second integral to the end of the rotary shaft, in contact with one another. The connection between the cams, by virtue of the shape of the mating surfaces thereof, allows converting the rectilinear motion of the piston into a rotary motion of the shaft . [0008] An example of such embodiment is shown in the DE-STA-CO Industries brochure called "Pneumatic swing clamps" .

[0009] Further embodiments are known, for example, from documents DE 3900298, EP 204458, DE 3426553, EP 93662, JP 57134025 and US 3,559,537.

[0010] The object of the present invention is to obtain a rotary actuator which should overcome the disadvantages mentioned above with reference to the prior art. [0011] Such object is achieved by an actuator according to the following claim 1. The dependent claims describe embodiment variations .

[0012] The features and advantages of the actuator according to the present invention will appear more clearly from the following description, made by way of an indicative and non-limiting example with reference to the annexed figures, wherein:

[0013] - figure 1 shows a perspective view of an actuator device according to the present invention, according to a preferred embodiment;

[0014] - figures 2a, 2b and 2c respectively show side views and a plan view of the device of figure 1;

[0015] - figure 3 shows a longitudinal section view of the device of figure 1, wherein a plate is in a retracted limit position;

[0016] - figure 4 shows the longitudinal section view of figure 3 , wherein the plate is in an advanced limit position;

[0017] - figure 5 shows a perspective view of a shaft of the actuator device, according to a preferred embodiment ;

[0018] - figure 6 shows a section view of the actuator device, according to a further embodiment;

[0019] - figure 7 shows a perspective view of the actuator device, with a portion removed to observe the interior thereof, according to an even further embodiment ;

[0020] - figures 8 to 11 show a section view of the actuator device according to further embodiments; and [0021] - figures 12a and 12b respectively show a cross section and a rear front view of the actuator device according to an even further embodiment.

[0022] With reference to the annexed figures, reference 1 indicates a rotary actuator device, that is, an actuator device suitable for converting a translatory motion into a rotary motion.

[0023] The device 1 is suitable for being associated to pressure means, for example pneumatic or oil-pressure, suitable for generating and feeding a fluid under pressure, for example air or oil, to a user. For example, said pressure means comprise a compressor, for generating a flow of fluid under pressure, and feeding pipes, suitable for being connected to the actuator device for feeding the flow of fluid under pressure thereto, for example through valves and/or solenoid valves that can be arranged onto the actuator itself.

[0024] The device 1 comprises an housing 2 comprising a peripheral annular wall that mainly extends along a longitudinal housing axis X-X and that delimits an inner chamber 4. [0025] In the following description, the terms "longitudinal" and "longitudinally" are used with reference to the same direction of the longitudinal axis X-X of housing 2, whereas the terms "cross" and "crosswise" are used with reference to a direction perpendicular to that of the longitudinal axis X-X of housing 2.

[0026] In accordance with a preferred embodiment, said housing 2 exhibits an elliptical cross section. [0027] Moreover, device 1 comprises a translatable plate 6, seated in said inner chamber 4 of housing 2.

[0028] Plate 6 is suitable for translating within said housing 2 , along a translation axis coinciding with the longitudinal axis X-X of housing 2, under the action of said pressure means.

[0029] Plate 6 exhibits a cross section suitable for obtaining a shape coupling with the wall of housing 2 , so as to prevent the relative rotations between plate 6 and housing 2 about said longitudinal axis X-X. [0030] For example, also plate 6 exhibits an elliptical cross section.

[0031] As can be understood, the shape coupling between the cross section of housing 2 and the cross section of plate 6 represents a preferred embodiment of constraining means suitable for substantially preventing a relative rotation about said longitudinal axis X-X between said housing 2 and said plate 6.

[0032] Moreover, device 1 comprises housing-plate sealing means suitable for preventing or limiting fluid leaks between the annular wall of housing 2 and plate 6.

[0033] For example, said housing-plate sealing means comprise at least one sealing ring 8 seated in seats arranged peripherally to plate 6.

[0034] Moreover, plate 6 exhibits a through hole 10, which crosses plate 6 longitudinally, for example obtained centrally thereto. Said through hole 10 is surrounded by an inner wall 10a.

[0035] Preferably, said through hole 10 comprises a main space and at least one secondary space for obtaining seats for sealing or gaskets.

[0036] According to an embodiment, said seal is inserted into plate 6. According to a further embodiment , the seal is made vulcanised directly on plate 6.

[0037] Moreover, device 1 comprises a shaft 20 rotating about said longitudinal axis X-X, at least partly seated into said inner chamber 4 of housing 2.

[0038] Preferably, shaft 20 comprises a back portion

22, preferably cylindrical, a front portion 24, preferably cylindrical, and a cooperation portion 26, intermediate between said back portion 22 and said front portion 24.

[0039] According to a- preferred embodiment, said shaft 20 is made in a single piece or in separate portions, for example coinciding with said back portion 22, said front portion 24 and said cooperation portion 26. The three portions ' are then connected to one another for forming the entire shaft 20.

[0040] The front portion 24 and the back portion 22 of shaft 20 are suitable for being associated to a user device, for example a tap.

[0041] The back 22 and front portions 24 are suitable for supporting shaft 20 in rotation.

[0042] To this end, in one embodiment, said device comprises at least one back bearing 28 on the back portion 22 of shaft 20, and at least one front bearing 30 on the front portion 24 of shaft 20.

[0043] As can be understood, said bearings represent a preferred embodiment of rotation support means suitable for supporting shaft 20 defining the position of the rotation axis thereof and allowing the rotation of said shaft about said rotation axis .

[0044] According to a further embodiment, for supporting shaft 20 in rotation, the back portion 22 and the front portion 24 of shaft 20 are made of anti- friction or hardened material. [0045] Preferably, moreover, said shaft 20 comprises a back projection 32 and a front projection 34, protruding relative to said back 22' and front portions 24. [0046] For example, the front 32 and back projections 34 are obtained with continuous annular cylindrical walls. [0047] The back projection 32 is suitable for moving in abutment with the back bearing 22 and, similarly, the front projection 34 is suitable for moving in abutment with the front bearing 24, for preventing or limiting the longitudinal translation of shaft 20.

[0048] As can be understood, said back 32 and front projections 34 represent a preferred embodiment of translation constraining means suitable for preventing or limiting the longitudinal translation of shaft 20. [0049] The cooperation portion 26 of shaft 20 and plate 6 are connected to one another and suitable for causing -a predetermined rotation of shaft 20 at a predetermined translation of plate 6.

[0050] In particular, said plate 6, fitted on said shaft 20, which crosses it through said through hole 10, is suitable for sliding on said shaft 20, said plate 6 thus biasing said cooperation portion 26 of shaft 20 for placing said shaft 20 in rotation.

[0051] According to an embodiment, the cooperation portion 26 of shaft 20 exhibits a shape resulting, for example, from the twisting about the longitudinal axis of a strap having rectangular or square section. [0052] In other words, said cooperation portion 26 exhibits a mating surface 40, in contact with plate 6, with spiral patterns along said longitudinal axis .

[0053] Preferably, said pattern is a helical pattern, in particular with constant or variable pitch, for example variable continuously or at intervals. [0054] In the embodiment variation with variable pitch, said cooperation portion 26 preferably exhibits at least three intervals, each interval having a pitch differing from the next one. In particular, the first interval, called back interval, close to the back portion 22 of shaft 20, exhibits a first pitch, the second interval, called intermediate interval, exhibits a second pitch and the third interval, called front interval, close to the front portion 24 of shaft 20, exhibits a third pitch, the first pitch being greater or smaller than the second pitch and the second pitch being smaller or greater than the third pitch.

[0055] The through hole 10 of plate 6 is obtained so as to form, partly, totally or with the support of other elements, a conjugated surface relative to that of the cooperation portion 26 of shaft 20. Such connection is suitable for causing a predetermined rotation of shaft 20 at a predetermined translation of plate 6. [0056] The inner wall 10a of through hole 10 of plate 6, as can be understood, forms a cooperation portion of plate 6 with the cooperation portion 26 of shaft 20. [0057] According to a preferred embodiment, only the portion of inner wall 10a corresponding to the main space of hole 10 biases the cooperation portion 26 for the rotation of shaft 20, the secondary spaces being enlarged for forming seats for the seal between shaft and plate. [0058] To this end, preferably, device 1 comprises at least one gasket 50, at least partly seated in said hole 10 of plate 6.

[0059] Preferably, moreover, said hole 10 of plate 6 and said gasket 50 are suitable for causing a floating motion of gasket 50 according to a cross direction relative to said axis of rotation of the shaft . [0060] As can be understood, said gaskets 50 represent a preferred embodiment of shaft-plate sealing means suitable for obtaining a seal between said plate and said shaft .

[0061] Moreover, housing 2 of device 1 comprises closing covers 60 suitable for being connected to housing 2 for closing the inner chamber 4. [0062] Preferably, said closing cover 60 comprises a bearing space 62, suitable for seating said bearing for supporting shaft 20 in rotation.

[0063] Preferably, moreover, said closing cover 60 comprises a fluid duct 64 for the fluid connection to said pressure means and for feeding fluid under pressure to said inner chamber 4.

[0064] According to a preferred embodiment, said housing 2 is obtained in a single piece with said covers.

[0065] Preferably, moreover, said actuator device 1 comprises at least one tie rod 100, connected to said closing covers 60 for connecting said covers to the housing.

[0066] In order to illustrate the operation of the actuator device, let's assume that at first, plate 6 is arranged in a retracted limit position Pl, close to the back portion 22 of shaft 20. - figure 20 shows the longitudinal section view of figure 3 , wherein the plate is in an advanced limit position;

[0067] By feeding fluid under pressure to device 1, for example through the closing cover 60 arranged at the back, plate 6 translates along said longitudinal axis X-X inside housing 6, moving, at the end of the stroke, to an advanced limit position P2, close to the front portion 24 of shaft 20. [0068] In the translation between the retracted limit position Pl and the advanced limit position P2, plate 6 biases the cooperation portion 26 of shaft 20 and, by- virtue of the surface shape thereof, said cooperation portion 26 performs a predetermined rotation. [0069] As a consequence, when the plate is located in said advanced limit position P2, shaft 20 exhibits a second angular limit arrangement (figure 4) . [0070] By feeding fluid under pressure, through the closing cover 60 arranged at the front, the plate translates from the advanced limit position P2 to the retracted limit position Pl, so that shaft 20 rotates from the second angular limit position to the first angular limit position.

[0071] According to an embodiment variation, the actuator device 1 is a dual effect device. According to a further embodiment variation, the actuator device 1 is a simple effect device. According to an even further embodiment variation, the actuator device 1 is a simple effect device with return through elastic means, for example by spring or compressed air. [0072] According to a further embodiment, for example shown in figure 6, plate 6 exhibits seats for gaskets 202, 204 for obtaining a seal with shaft 20 and seats for seals 206, 208 for obtaining a seal with housing 2. Shaft 20 exhibits a helical toothing for connecting to plate 6. [0073] According to a further embodiment, for example shown in figure 7, plate 6 exhibits quadrangular shape, for example square with rounded corners.

[0074] Preferably, moreover, the actuator device 1 comprises means for displaying the shaft rotation. For example, said display means comprise a knob 210, integral in rotation with shaft 20, for example at the back portion 22 thereof, and arranged outside housing 2.

[0075] According to an even further embodiment, for example shown in figures 6, 8, 12a and 12b, the actuator device 1 comprises limiting means suitable for limiting the stroke of plate 6 or the rotation of shaft 20. For example, said limiting means are mechanical and comprise a moving pin 211, integral in rotation with shaft 20, for example attached to the front portion 24 thereof, and abutment pins 213a, 213b, attached to housing 2, for example to cover 60 thereof. The abutment pins 213a, 213b protrude towards moving pin 211, thus forming abutments for said moving pin 211 that limit the rotation of shaft 20 (and therefore the translation of plate 6) . [0076] According to a further embodiment, said limiting -means are electrical, magnetic or optical. [0077] According to a further embodiment, for example shown in figure 8, the actuator device 1 comprises means for slowing down the plate stroke suitable for slowing down the plate stroke in the proximity of the limit positions taken thereby.

[0078] Preferably, said slowing down means comprise an annular protuberance 212 of plate 6, suitable for inserting, during the stroke of plate 6, into a braking space 214 of the inner chamber 4 of housing 2, wherein air is compressed due to the advancement of plate 6, thus slowing down the stroke thereof. For example, said braking space 214 consists of an annular shoulder 216 of housing 2 or covers 60. Preferably, said slowing down means comprise adjustment pins by which it is possible to regulate the air venting from the braking space 214, for regulating the slowing down action of the slowing down means on plate 6.

[0079] According to a further embodiment, for example shown in figure 9, shaft 20 exhibits the front portion 24 smooth and extending up to the interior of plate 6, where it is jointed to the cooperation portion 26. [0080] According to a further embodiment, for example shown in figure 10, shaft 20 is mounted projecting relative to cover 60 at the back portion 22, whereas the other end is supported by plate 6 itself. In particular, plate 6 exhibits a blind hole 10' and shaft 20 exhibits the cooperation portion 26 having surface conjugated with plate 6 and the back portion 22 smooth and suitable for supporting the shaft in rotation. [0081] According to a further embodiment, for example shown in. figures 11, the actuator device 1 comprises two plates 6a, 6b, each engaged with the respective shaft 20a,

20b, mounted projecting on the respective cover 60a, 60b of housing 2.

[0082] Each plate 6a, 6b exhibits gaskets 202a, 202b for the seal on the respective shaft 20a, 20b and seals 206a, 208a, 206b, 208b for the seal with housing 2. [0083] Moreover, each plate 6a, 6b comprises protuberance 212a, 212b for the engagement with the respective braking space 214a, 214b.

[0084] By suitably selecting the orientation of the conjugate profiles of the plates with the respective shafts and suitably arranging the feeding of the fluid under pressure into housing 2, the actuator device is suitable for generating rotations of shafts 20a, 20b in concordant or discordant direction, concurrent or alternating. [0085] Innovatively, the actuator device according to the present invention is very compact in its overall dimensions and therefore suitable for being easily placed into the systems it is intended for.

[0086] According to a further advantageous aspect, the sealing elements or the gaskets between plate and shaft allow limiting the leaks between shaft and plate, subsequent to an adaptation of the gasket position to the profile of the shaft cooperation portion gripping the plate.

[0087] According to an even further advantageous aspect, the sequence of intervals with different pitches along the cooperation portion of the shaft allows determining a desired motion law for the shaft rotation and a desired pattern of the shaft torque. [0088] In fact, it is highly advantageous, in the rotation of taps in complex systems through said actuator devices, to have a pattern of the torque available at the shaft envisaging a higher torque at the beginning of the plate stroke, to overcome the static frictions, and at the end of the stroke thereof, for tightening the tap, and a lower torque between the beginning and the end of the stroke. Such pattern of the torque available at the shaft can be obtained by imposing desired pitch values to the spiral pattern of the shaft cooperation portion. [0089] Advantageously, moreover, the shaft can be made in separate parts, given the complexity of the shape, afterwards connected to each other.

[0090] It is clear that a man skilled in the art can make several changes and variations to the actuator device described above in order to meet specific and incidental needs. [0091] According to an embodiment variation, for example, the cross sections of the housing and of the plate are polygonal, for example square or rectangular. [0092] . According to a further embodiment variation, the rotation constraining means consist of sliding tracks arranged along the housing, with which the plate engages not to rotate .

[0093] An even further embodiment variation envisages means for supporting the shaft in rotation comprising bushes .

[0094] According to an embodiment variation, the means for constraining the shaft translation comprise plates or abutments mechanically connected to the closing covers. [0095] Moreover, according to an embodiment variation, the through hole of the plate exhibits an inner wall shaped so as to obtain a spiral profile, whereas the shaft exhibits a shape of rectilinear and not twisted strap, for example with rectangular cross section. [0096] According to an even further embodiment variation, the shaft exhibits a cylindrical shape and is grooved for obtaining a spiral profile. Or, it exhibits a spiral projection protruding on the surface, suitable for connecting to the plate.

[0097] According to an even further embodiment variation, the fluid feeding inside the housing takes place through ducts obtained through the annular wall of said housing.

[0098] According to a further construction variation, the longitudinal axis X-X of the housing and the rotation axis of shaft 20 are separate.

[0099] For example, as shown in figures 12a and 12b, housing 2 and plate 6 exhibit circular cross section, the housing exhibits the longitudinal axis X-X, substantially coinciding with the central symmetry axis of the cylindrical circular housing, and plate 6 exhibits a translation axis K-K, coinciding with the rotation axis of shaft 20, substantially coinciding with the axis of the hole of plate 6 with which shaft 20 engages. The longitudinal axis X-X of housing 2 is parallel and separate from the translation axis K-K (and thus, from the rotation axis of shaft 20) of plate 6. [00100] Also such variations are to be intended as comprised in the scope of protection as defined by the following claims.

Claims

1. An actuator device (1) suitable for being associated to pressure means for generating a flow of fluid under pressure, wherein said device comprises: - an housing (2) which develops along a longitudinal axis
(X-X) , wherein said housing exhibits an inner chamber
(4);
- at least one translatable plate (6) , seated in said chamber (4) of the housing, wherein said plate (6) is suitable for translating within said housing (2) , parallel to said longitudinal axis (X-X) , under the action of said pressure means and wherein said plate (6) comprises at least one cooperation portion (10a) ;
- at least one shaft (20) rotating about an axis parallel to said longitudinal axis (X-X) and at least partly seated in said chamber (4) of the housing (2) , wherein said shaft (20) is supported in rotation and comprises at least one cooperation portion (26) ; said cooperation portion (10a) of plate (6) and said cooperation portion (26) of shaft (20) being connected to one another and suitable for causing a predetermined rotation of the shaft (20) at a predetermined translation of the plate (6) ; wherein said plate (6) is suitable for sliding on said shaft (20) , said cooperation portion (10a) of the plate (6) thus biasing said cooperation portion (26) of the shaft (20) for placing said shaft (20) in rotation, and wherein said device comprises plate-shaft sealing means, seated in said plate, suitable for obtaining a fluid seal between said plate (6) and said shaft (20) .
2. A device according to claim 1, wherein said sealing means comprise at least one gasket (202, 204) for obtaining the seal between the plate (6) and the shaft (20) .
3. A device according to claim 1 or 2 , wherein said device further comprises at least one seal (206, 208) for obtaining the seal between the plate (6) and the housing (2) .
4. A device according to any one of the previous claims, wherein said cooperation portion (26) of shaft 20 exhibits a groove for connecting to said plate (6) .
5. A device according to claim 4 , wherein said groove is helical .
6. A device according to claim 5 , wherein said helical groove exhibits a variable pitch.
7. A device according to any one of the previous claims, wherein said plate (6) exhibits a through hole (10) and said shaft (20) crosses said plate (6) at said hole (10) .
8. A device according to any one of claims 1 to 6, wherein said plate (6) exhibits a blind hole (10') and said shaft (20) connects to said plate (6) at said blind hole (10' ) .
9. A device according to any one of the previous claims , comprising rotation constraining means, suitable for substantially preventing a relative rotation about said longitudinal axis (X-X) between said housing (2) and said plate (6>.
10. A device according to claim 9, wherein said rotation constraining means comprise a shape coupling between the peripheral wall of the plate (6) and the inner wall of the housing (2) , said shape coupling being suitable for preventing said relative rotation.
11. A device according to claim 10, wherein said peripheral wall of the plate (6) exhibits an elliptical cross section.
12. A device according to claim 10, wherein said peripheral wall of the plate (6) exhibits a polygonal cross section, for example square or rectangular.
13. A device according to any one of claims 10 to 12, wherein said longitudinal axis (X-X) of the housing (2) and the rotation axis of the shaft (20) are separate.
14. A device according to any one of the previous claims, wherein said shaft (20) is supported in rotation by the housing (2) at both ends.
15. A device according to claim 14 , wherein said shaft (20) exhibits a back portion (22) and a front portion (24) , between which there is comprised said cooperation portion (26) , smooth and suitable for supporting said shaft in rotation.
16. A device according to any one of claims 1 to 13 , wherein said shaft (20) is supported in rotation by the housing (2) at just one end, the other end being supported by the plate (6) .
17. A device according to claim 16, wherein said shaft (20) exhibits a back portion (22) jointed to said cooperation portion (26) , smooth and suitable for supporting said shaft in rotation.
18. A device according to any one of the previous claims, wherein said shaft (20) is manufactured in a single piece.
19. A device according to any one of claims 1 to 17, wherein said shaft (20) is manufactured by connecting initially separate parts .
20. A device according to any one of the previous claims, comprising slowing down means suitable for slowing down the stroke of the plate (6) in the proximity of the limit positions.
21. A device according to claim 20, wherein said slowing down means comprise a protuberance (212) of the plate (6) suitable for sealingly engaging with a braking space (214) of the inner chamber (4) of the housing (2) .
22. A device according to claim 21, wherein said slowing down means comprise adjustment pins suitable for regulating the venting from said braking space (214) .
23. A device according to any one of the previous claims, comprising means for displaying the shaft rotation.
24. A device according to claim 23, wherein said display means comprise a knob (210) integral in rotation with shaft (20) and arranged outside said housing (2) .
25. A device according to any one of the previous claims, wherein said housing (2) and said plate (6) make up a simple effect piston-cylinder system.
26. A device according to claim 25, wherein said simple effect piston-cylinder system is provided with a return by elastic means .
27. A device according to any one of claims 1 to 24, wherein said housing (2) and said plate (6) make up a dual effect piston-cylinder system.
28. A device according to any one of the previous claims, comprising two shaft-plate pairs, seated into said housing.
29. A device according to any one of the previous claims, comprising means for limiting the stroke of the plate (6) or the rotation of the shaft (20) , said limiting means being suitable for limiting the stroke of the plate (6) or the rotation of the shaft (20) .
30. A device according to claim 29, wherein said limiting means are mechanical.
31. A device according to claim 30, wherein said limiting means comprise a moving pin (211) attached to the shaft
(20) and abutment pins (213a, 213b) attached to the housing and suitable for forming an abutment for said moving pin (211) .
PCT/IT2006/000442 2006-01-20 2006-06-13 Actuating device WO2007083333A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITBS2006A000011 2006-01-20
ITBS20060011 ITBS20060011A1 (en) 2006-01-20 2006-01-20 An actuator device

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Publication number Priority date Publication date Assignee Title
WO2014022144A1 (en) * 2012-07-31 2014-02-06 Fisher Controls International Llc Valve actuator for rotary valve
EP3477032A1 (en) * 2017-10-24 2019-05-01 Bodo Bode Dogrusan Otomotiv Yan San. VE TIC. A.S. Rotary drive for a pivotable door leaf

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US3183792A (en) * 1963-01-10 1965-05-18 Alton K Allen Free piston oscillator
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GB1035128A (en) * 1963-05-20 1966-07-06 Flo Tork Inc Improvements relating to fluid actuators
DE2338745A1 (en) * 1973-07-31 1975-02-13 Hausherr & Soehne Maschf Hydraulic or pneumatic rotary drive - threads of cylinder, piston and output-gear have twisted polygonal profiles
US4114517A (en) * 1975-06-24 1978-09-19 Hiroshi Teramachi Double acting actuator
GB2006877A (en) * 1977-10-26 1979-05-10 Epitoegepgyarto Vallalat Ram Cylinder
FR2427455A1 (en) * 1978-05-29 1979-12-28 Ife Gmbh Swing door or rotating hinge drive - has spiral gear inside hollow unit externally linked to sliding bar
US4838102A (en) * 1987-02-20 1989-06-13 Gebr. Bode & Co, Gmbh Rotating drive mechanism for swinging doors especially on vehicles
WO1999000603A1 (en) * 1997-06-30 1999-01-07 Lee, Chun, Woo Rotary actuator
US6666129B1 (en) * 1999-10-21 2003-12-23 Tuchenhagen Gmbh Operating device for a rotatable closing element of a valve
US20030029307A1 (en) * 2001-07-19 2003-02-13 Sami Daoud Energetic-based actuator device with rotary piston

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014022144A1 (en) * 2012-07-31 2014-02-06 Fisher Controls International Llc Valve actuator for rotary valve
CN103629389A (en) * 2012-07-31 2014-03-12 费希尔控制国际公司 Valve actuator for rotary valve
EP3477032A1 (en) * 2017-10-24 2019-05-01 Bodo Bode Dogrusan Otomotiv Yan San. VE TIC. A.S. Rotary drive for a pivotable door leaf

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