EP2009292A2 - Cylindre pneumatique doté d'un boîtier cylindrique en métal extrudé - Google Patents

Cylindre pneumatique doté d'un boîtier cylindrique en métal extrudé Download PDF

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Publication number
EP2009292A2
EP2009292A2 EP08158275A EP08158275A EP2009292A2 EP 2009292 A2 EP2009292 A2 EP 2009292A2 EP 08158275 A EP08158275 A EP 08158275A EP 08158275 A EP08158275 A EP 08158275A EP 2009292 A2 EP2009292 A2 EP 2009292A2
Authority
EP
European Patent Office
Prior art keywords
channel
pneumatic cylinder
cylinder according
section
cylinder
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
Application number
EP08158275A
Other languages
German (de)
English (en)
Other versions
EP2009292A3 (fr
EP2009292B1 (fr
Inventor
Heinz-Jürgen Engelke
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2009292A2 publication Critical patent/EP2009292A2/fr
Publication of EP2009292A3 publication Critical patent/EP2009292A3/fr
Application granted granted Critical
Publication of EP2009292B1 publication Critical patent/EP2009292B1/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
    • F15B15/1428—Cylinders
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • 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
    • F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
    • F15B2215/30—Constructional details thereof
    • F15B2215/305—Constructional details thereof characterised by the use of special materials

Definitions

  • the present invention relates to a pneumatic cylinder with a cylinder housing made of extruded metal, which has a central bore for receiving a piston, wherein in the cylinder wall at least one closed channel for accommodating an attachment is provided.
  • the field of application of the present invention extends primarily to long-lasting pneumatic cylinders whose housing consists of extruded aluminum or the like, wherein cylinder cover and cylinder base are screwed as detachable components of the front side of the cylinder housing.
  • pneumatic cylinders have a substantially square outer cross-section and a substantially circular bore for the inner piston.
  • Outside of the cylinder housing or within the wall means for attachment or placement of attachments, such as sensors for detecting the piston position are provided.
  • a generic cylinder housing for a pneumatic cylinder which has a closed channel for accommodating an attachment to avoid the above-described problem.
  • the closed channel is formed within the wall of the cylinder housing. Since the cylinder housing has a substantially square outer cross-section and a circular bore for the piston, the corner region of the cylinder housing offers the formation of the channel. This is generated during extrusion.
  • sensors for detection of the piston position are housed protected, which can be positioned from the outside via a permanent magnet in their relative position to the cylinder housing.
  • the invention includes the technical teaching that an inner tube is provided to form a closed channel whose outer cross-section matches as far as the inner cross-section of a pushed-over outer tube that results in the closed channel therebetween.
  • the advantage of the solution according to the invention is, in particular, that a machining of closed channels with difficult geometries is unnecessary. Any cross sections of closed channels can be easily formed by telescoping two extruded metal tubes.
  • the inner tube and outer tube do not necessarily consist of extruded metal.
  • At least one of the tubes can also be made of plastic or the like, as far as the strength appears given. This is especially the case when the outer tube is made of plastic. If this is a transparent plastic, then the position of the mounted in the closed channel attachment can be easily seen from the outside.
  • the attachment is designed as an electrical sensor for detecting the piston position.
  • the channel closed according to the invention can receive one or more such sensors.
  • the electrical sensor is designed in the manner of a film sensor.
  • a film sensor has two contact paths lying opposite one another and separated by a dielectric, which come into contact with one another upon the action of a magnetic field, here a permanent magnet integrated in the piston, so that the position of the piston can be determined via an external resistance measurement.
  • the inner tube is provided in the region of the channel with a straight Kanalgrnnd Design.
  • the film sensor can then be applied in a simple manner, preferably by gluing.
  • the closed channel preferably designed to accommodate a film sensor, slit-like, so can be at a diameter of the bore of less than 100mm a height of the channel of 0.5 - 10 mm.
  • the upper limit is determined by the geometric dimensions of the attachment to be accommodated.
  • a particular advantage of the inventive solution is that even very small slot widths of up to 0.5 mm can be represented by the solution according to the invention, namely evenly along the entire length of the cylinder housing.
  • foil sensors with a thickness of up to 0.5 mm can be safely accommodated.
  • the slot-like channel can be stepped in height and formed with flat side regions.
  • the smallest height of the flat side areas is up to 0.5 mm.
  • the film sensor can be precisely recorded along its edges, wherein the middle region of greater height leaves sufficient free space for a reliable actuation of the film sensor by the permanent magnet on the piston.
  • the outer cross section of the inner tube and the inner cross section of the outer tube to the region of the channel are circular.
  • This contour can be particularly easy to implement by extrusion production technology and the components designed in this way can also be inserted without difficulty by telescoping.
  • a slight interference fit should be achieved in the collapsed state, so that the components so interconnected are clearly determined location.
  • the inventive solution for forming the closed channel is a prerequisite for the outer cross section of the outer tube may continue to have a smooth square basic shape. In the corner region of the square basic form, sufficient material remains to introduce holes for receiving tie rods or screws.
  • the tie rods or screws are used to attach the cylinder base and cylinder cover and are so far also protected within the outer contour of the cylinder tube housed.
  • the introduced in the inner cylinder of the cylinder housing according to the invention bore for receiving the piston can be made circular or polygonal.
  • a polygonal bore or comparable non-round geometry serves to prevent rotation of the piston displaceable herein.
  • the cylinder housing 1 shown here consists of an inner tube 2 and an outer tube 3, both of which are made of extruded aluminum.
  • the inner tube 2 has a bore 4 for receiving a - not shown - piston.
  • the outer tube 3, however, has a square basic shape with rounded edges.
  • the outer cross section of the inner tube 2 and the inner cross section of the outer tube 3 are circular except for the region of a channel 5.
  • the inner tube 2 is provided in the region of the channel 5 with a straight channel base surface 6.
  • the channel base 6 is used for applying - not shown - film sensor for detecting the piston position.
  • the channel 5 between the interior 2 and outer tube 3 is closed and formed like a slot.
  • the channel 5 is formed by inserting the inner tube 2 in the outer tube 3 via corresponding differences in the cross sections.
  • the bore 4 of the inner cylinder 2 has a polygonal cross-section to prevent rotation.
  • four holes 7 for receiving - not shown - tie rods are introduced.
  • the slot-like channel 5 is stepped in height with flat side portions 8, wherein the two-sided flat side portions 8 have in this embodiment, a height of 0.5 mm to a 0.4 mm wide film sensor edge through Insertion and fix defined herein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
EP20080158275 2007-06-26 2008-06-13 Cylindre pneumatique doté d'un boîtier cylindrique en métal extrudé Not-in-force EP2009292B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710029628 DE102007029628B3 (de) 2007-06-26 2007-06-26 Pneumatikzylinder mit einem Zylindergehäuse aus stranggepresstem Metall

Publications (3)

Publication Number Publication Date
EP2009292A2 true EP2009292A2 (fr) 2008-12-31
EP2009292A3 EP2009292A3 (fr) 2011-06-01
EP2009292B1 EP2009292B1 (fr) 2012-10-17

Family

ID=39772909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080158275 Not-in-force EP2009292B1 (fr) 2007-06-26 2008-06-13 Cylindre pneumatique doté d'un boîtier cylindrique en métal extrudé

Country Status (2)

Country Link
EP (1) EP2009292B1 (fr)
DE (1) DE102007029628B3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10434369B2 (en) 2014-06-19 2019-10-08 Flexline Fitness, Inc. Exercise machine
US10709924B2 (en) 2015-06-19 2020-07-14 Flexline Fitness, Inc. Squat bar for fitness machine
US11097148B2 (en) 2017-07-13 2021-08-24 Flexline Fitness, Inc. Fitness machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014815A1 (de) 2009-03-25 2010-09-30 Festo Ag & Co. Kg Gehäuserohr und damit ausgestatteter Linearantrieb
DE102014226830B4 (de) * 2014-12-22 2016-11-24 Multivac Sepp Haggenmüller Se & Co. Kg Verpackungsmaschine mit hygienischem Pneumatikzylinder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429567A1 (de) 1994-08-19 1996-02-22 Anton Mueller Verfahren und Vorrichtung zum Herstellen eines pneumatischen Zylinders
EP1255045B1 (fr) 2001-04-30 2005-08-24 Rexroth Mecman GmbH Vérin avec un capteur coulissable pour détecter la position du piston

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3529351A1 (de) * 1985-08-16 1987-02-19 Knorr Bremse Ag Druckmittelbeaufschlagbarer zylinder
DE10152178C2 (de) * 2001-04-30 2003-04-17 Rexroth Mecman Gmbh Druckmittelzylinder mit einem verschiebbaren Sensor zur Detektion der Kolbenstellung
JP3780187B2 (ja) * 2001-08-31 2006-05-31 Ｓｍｃ株式会社 流体圧シリンダ用シリンダチューブ
DE10203791B4 (de) * 2002-01-31 2006-11-30 Rexroth Mecman Gmbh Fluidische Arbeitseinheit mit integrierter Ansteuerelektronik
DE10210636C1 (de) * 2002-03-11 2003-05-22 Imi Norgren Gmbh Fluidbetätigter Arbeitszylinder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429567A1 (de) 1994-08-19 1996-02-22 Anton Mueller Verfahren und Vorrichtung zum Herstellen eines pneumatischen Zylinders
EP1255045B1 (fr) 2001-04-30 2005-08-24 Rexroth Mecman GmbH Vérin avec un capteur coulissable pour détecter la position du piston

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10434369B2 (en) 2014-06-19 2019-10-08 Flexline Fitness, Inc. Exercise machine
US10709924B2 (en) 2015-06-19 2020-07-14 Flexline Fitness, Inc. Squat bar for fitness machine
US11097148B2 (en) 2017-07-13 2021-08-24 Flexline Fitness, Inc. Fitness machine

Also Published As

Publication number Publication date
EP2009292A3 (fr) 2011-06-01
DE102007029628B3 (de) 2009-01-15
EP2009292B1 (fr) 2012-10-17

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