EP0017628A1 - Pneumatische Betätigungsvorrichtung - Google Patents

Pneumatische Betätigungsvorrichtung Download PDF

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Publication number
EP0017628A1
EP0017628A1 EP80830016A EP80830016A EP0017628A1 EP 0017628 A1 EP0017628 A1 EP 0017628A1 EP 80830016 A EP80830016 A EP 80830016A EP 80830016 A EP80830016 A EP 80830016A EP 0017628 A1 EP0017628 A1 EP 0017628A1
Authority
EP
European Patent Office
Prior art keywords
activating device
piston
pneumatic activating
thereafter
fact
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.)
Withdrawn
Application number
EP80830016A
Other languages
English (en)
French (fr)
Inventor
Massimo Cassinari
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0017628A1 publication Critical patent/EP0017628A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical 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
    • F15B15/065—Mechanical 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 rack-and-pinion type
    • 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
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical 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
    • F15B15/066—Mechanical 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 scotch yoke type

Definitions

  • the subject of this invention is a pneumatic device causing activation by means of a rotary motion; to be more - precise, the invention concerns a pneumatic device able to bring about a rotary motion to be employed, for instance, to activate valves or other apparatus.
  • This straight movement is transformed into a rotary .movement by means of devices which may be a piston with a slotted link or a piston with a rack.
  • Said devices. often involve the further shortcoming that a plurality of outside feed pipes has to be fitted so that the fluid can be introduced at one and the same time into the two chambers opposite the pistons so that the latter can be provided with the movement towards each other which is needed to transmit the rotary movement to the primary shaft.
  • the pistons have a plurality of guide shafts arranged perpendicularly to the disk which acts as a piston; the shafts of one disk are oriented towards the other disk but are advantageously offset in respect of the shafts of the disk towards which they are orient- .ed.
  • the shafts lie parallel to each other but, as said, are- advantageously staggered at different angles.
  • the shafts have different sizes, and one or more guide shafts can be used to transmit motion to a slot- .ted link or to a pinion.
  • one or more springs may be visualized as being located between the disk acting as a piston and the corresponding end of the cylinder.
  • said springs can be envisaged as .being positioned between the disks acting as pistons or be- .tween the disks and the axle which takes the rotary motion .to the outside.
  • the feed for the two chambers lying between the disks acting as pistons and the corresponding ends of the cylinder is realized with a duct made in the jacket of the cylinder, so that only one feed is needed for. both chambers.
  • the hole to feed. the chamber lying between the two disks acting as pistons is advantageously located near to the feed for the two end chambers.
  • the invention tends, therefore, to provide many advantages and benefits for an end-user inasmuch as the latter can .avoid frequent checking and maintenance operations, difficult and costly connections and the disadvantage of being condit--ioned by the device, and- so forth.
  • the invention has the aim of making the drive suitable for the requirements of the user by simply changing some parts and leaving the rest unaltered.
  • the invention is formed with a pneumatic activating device suitable for transforming a straight movement -into a rotary movement, whereby the deuice is compact and is characterized by having in reciprocal cooperation and coordination:
  • IO is generically the device: .II is the jacket of the cylinder 12: I3 is the inlet hole for the fluid to reach the chamber I7 between the two pis- .tons: I4 is the inlet hole cooperating with the duct I5 and .outlet I6 to feed the fluid into the end chambers I8: I7 is .the chamber between the two pistons I9: I8 are the chambers -between the pistons I9 and the ends of the cylinder I2: I9- are the pistons and consist of a disk 2I and a plurality of arms of which at least one 22 is equipped with fittings, whilst the others 23 act only as guides: 20 are the ends of -the cylinder and are fixed in a known manner to the jacket and may include seatings 24 for a plurality of springs 25 to be fitted: 2I is the disk constituting the piston and may itself too have one or more sunken areas for
  • said equipped arms will comprise advantageously some antifriction pads 33: 23 are the unequipped guide arms and may be one or more in number per disk 19; they too have antifriction pads 33 and can cooperate with arms 22 to limit the run of the disks 19; said arms 23 can be staggered and may, in that case, be long or else may coincide with each other, in which case they will be shorter: 24-124 are possible sunken areas wherein the springs 23-125 are seated: 25-125 are springs which serve to keep the device in a normal position and may be located between the disk I9 and the corresponding end 20 or between one disk 19 and the other or else between a disk and an appropriate support positioned around the shaft 26: 26 is the motion output shaft and cooperates with packings 127 to re- .tain a watertight seal and may be equipped with a pinion
  • the inlet holes 13 and 14 may be made near to each other and pre-arranged for an electric valve to be fitted.
  • the arms I22 may be equipped so as to perform the work of the arms 22 (rack and pinion) or of the arms 222 (crank pin and slotted link).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
EP80830016A 1979-04-10 1980-03-22 Pneumatische Betätigungsvorrichtung Withdrawn EP0017628A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6035479 1979-04-10
IT6035479 1979-04-10

Publications (1)

Publication Number Publication Date
EP0017628A1 true EP0017628A1 (de) 1980-10-15

Family

ID=11290445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80830016A Withdrawn EP0017628A1 (de) 1979-04-10 1980-03-22 Pneumatische Betätigungsvorrichtung

Country Status (1)

Country Link
EP (1) EP0017628A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2318616B (en) * 1996-10-14 1999-10-06 Smc Corp Rotary actuator

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1053778A (de) *
US3148595A (en) * 1963-05-21 1964-09-15 Ohio Oscillator Company Fluid motor actuator
DE1601746A1 (de) * 1966-03-05 1970-08-13 Norbro Eng Ltd Drehbetaetigungs-Vorrichtung
FR2097523A6 (de) * 1970-07-09 1972-03-03 Gachot Jean
US3772966A (en) * 1972-06-28 1973-11-20 C Mills Fluid torque operator
DE2405297A1 (de) * 1974-02-04 1975-08-14 Erich Kuerten Drehbetaetigungsvorrichtung
GB1418968A (en) * 1972-10-19 1975-12-24 Shafer H J Dual cylinder fluid operated actuator
FR2279963A2 (fr) * 1974-07-25 1976-02-20 Gachot Jean Actionneur a air comprime
FR2389805A1 (en) * 1977-05-06 1978-12-01 Perrin Claude Hydraulically operated rack and pinion mechanism - has piston on end of rack enclosed in double acting cylinder

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1053778A (de) *
US3148595A (en) * 1963-05-21 1964-09-15 Ohio Oscillator Company Fluid motor actuator
DE1601746A1 (de) * 1966-03-05 1970-08-13 Norbro Eng Ltd Drehbetaetigungs-Vorrichtung
FR2097523A6 (de) * 1970-07-09 1972-03-03 Gachot Jean
US3772966A (en) * 1972-06-28 1973-11-20 C Mills Fluid torque operator
GB1418968A (en) * 1972-10-19 1975-12-24 Shafer H J Dual cylinder fluid operated actuator
DE2405297A1 (de) * 1974-02-04 1975-08-14 Erich Kuerten Drehbetaetigungsvorrichtung
FR2279963A2 (fr) * 1974-07-25 1976-02-20 Gachot Jean Actionneur a air comprime
FR2389805A1 (en) * 1977-05-06 1978-12-01 Perrin Claude Hydraulically operated rack and pinion mechanism - has piston on end of rack enclosed in double acting cylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2318616B (en) * 1996-10-14 1999-10-06 Smc Corp Rotary actuator
US6170797B1 (en) 1996-10-14 2001-01-09 Smc Corporation Rotary actuator

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LU NL SE

17P Request for examination filed

Effective date: 19810415

R17P Request for examination filed (corrected)

Effective date: 19810414

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830322