EP1364130B1 - Chambre a depression - Google Patents

Chambre a depression Download PDF

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Publication number
EP1364130B1
EP1364130B1 EP02719969A EP02719969A EP1364130B1 EP 1364130 B1 EP1364130 B1 EP 1364130B1 EP 02719969 A EP02719969 A EP 02719969A EP 02719969 A EP02719969 A EP 02719969A EP 1364130 B1 EP1364130 B1 EP 1364130B1
Authority
EP
European Patent Office
Prior art keywords
housing
vacuum unit
push rod
vacuum
diaphragm
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.)
Expired - Lifetime
Application number
EP02719969A
Other languages
German (de)
English (en)
Other versions
EP1364130A1 (fr
Inventor
Thomas Jessberger
Heinz Dobusch
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.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel 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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP1364130A1 publication Critical patent/EP1364130A1/fr
Application granted granted Critical
Publication of EP1364130B1 publication Critical patent/EP1364130B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type

Definitions

  • the invention relates to a vacuum unit according to the preamble of independent claim 1.
  • a vacuum box in the form of a pneumatic switching element is known. This is connected to a vacuum source and has a pressure chamber in which a against the force of a spring element displaceable by a negative pressure actuator is arranged. This actuator is connected to a led out of the pressure chamber actuator.
  • the spring element is arranged outside the pressure chamber and engages on the actuating device or may be attached to a hinge arranged outside. A leadership of the push rod on the spring can not be realized with this structure.
  • the membrane can be damaged. In this case, the membrane can be rubbed through, which can lead to failure of the vacuum unit. This leads to inaccuracies in the transmission of the negative pressure to an element to be actuated.
  • the invention has for its object to avoid these disadvantages and to create a vacuum box or a pneumatic switching element with a precise guidance and thus an exact transmission of the negative pressure in a linear or rotary motion. This object is solved by the features of independent claim 1.
  • the main advantage of the invention is that the push rod is centered on the membrane and is mounted on the housing of the vacuum unit via a longitudinal guide. This makes canting impossible.
  • the longitudinal guide can be designed in such a way that low frictional forces act and thus do not distort the transmission of the movement.
  • the invention provides to provide the longitudinal guide with a bearing pin in the lid of the vacuum unit. This bearing pin engages through the compression spring into a bore of the push rod or the push rod is guided by this bearing pin.
  • This bearing pin engages through the compression spring into a bore of the push rod or the push rod is guided by this bearing pin.
  • Another advantage of the invention is that the compression spring can be designed more unstable, since buckling is prevented by the guide. Furthermore, this type of longitudinal guide is to be integrated into small spaces, since no additional space and no additional components are required. The storage of the bearing pin in the push rod can also be done with a larger game, in particular of several millimeters. As a result, the use of joints, which serve to compensate for rotational movements of a crank, is not required.
  • the push rod can be provided in a further embodiment of the invention with an expansion element, so that a vacuum box is provided which makes an adjustment due to the temperature in addition to the adjustment due to the negative pressure.
  • a vacuum box is provided which makes an adjustment due to the temperature in addition to the adjustment due to the negative pressure.
  • Another embodiment of the invention lies in the supplement of the push rod by a hinge.
  • a hinge which preferably consists of plastic.
  • This housing is constructed in two parts. The two parts can be coupled to one another via snap connections or via a welded joint, embedded in the parting plane of the two parts.
  • Figure 1 shows a vacuum box 10 consisting of a lid 11, a housing 12 disposed therein a membrane 13, a compression spring 14 and a push rod 15.
  • the compression spring 14 directs a force on the push rod 15. If a negative pressure in the vacuum chamber 16 is applied, the Push rod pulled inwards. When reducing the negative pressure, the push rod slides outward and can thus adjust a not shown here element in the form of a flap, shaft or the like.
  • the push rod is enclosed by the membrane.
  • the connection between the diaphragm and push rod is chosen so that it simultaneously forms a seal of the vacuum chamber 16. It can be seen that with a laterally acting force on the push rod, this tends to dodge, that is, due to the instability of the spring difficulties in terms of leadership on. This can cause the push rod rubs on the housing or tilting occurs which leads to inaccuracies and misalignments.
  • FIG. 2 shows a vacuum box 10 with a longitudinal guide. Identical parts are provided with the same reference numerals.
  • the push rod 15 is connected to a push rod head 17th Mistake. At this the membrane is sealingly 13.
  • a longitudinal guide in the form of a sliding bearing 18 is provided.
  • This plain bearing has a seal 19, which ensures that the vacuum chamber 16 is reliably sealed.
  • the vacuum chamber is connected via a line 20 with a negative pressure generator, not shown here.
  • the plain bearing has a plain bearing sleeve 21 which is matched with respect to the material on the material of the push rod and has a low coefficient of friction.
  • the sliding bearing is further provided with a bearing cap 22, which also serves as a stop for the push rod head 17 at a maximum negative pressure.
  • a joint 23 is provided with this system, a crank can be driven. It is also possible to perform a pivoting movement, so that an additional joint in the push rod is not necessary.
  • FIG. 3 shows a vacuum box with an additional expansion element 24.
  • expansion elements are also known by the name of the growth cytostat and, when the temperature changes, execute an axially directed movement.
  • the expansion element itself is axially movable, stored in the housing 12 of the vacuum unit in such a way that a plastic carrier 25 which is connected to the membrane 13, this element moves due to the applied negative pressure. If in addition a temperature change occurs, the expansion element 24 will exert an axial movement against the force of the compression spring 26, since the plunger 27 of the expansion element on the plastic support 25 is supported.
  • Figure 4 shows a variant in which the lid 28 is provided with an inwardly directed bearing pin 29.
  • This bearing pin 29 engages in a bore 30 of the push rod 31 and thus causes a guide this push rod, this means that a guide on the housing 32 in the region of the passage of the push rod is not required by the same.
  • the guide on the plunger 29 may be both a slide bearing guide and a ball bearing bushing guide.
  • the advantage of this guide is that the housing can be designed relatively simple and contamination of the guide is effectively prevented by the inner plunger.
  • Another advantage is the fact that the push rod is not applied to the housing wall and the membrane so that it can not be chafed through.
  • the vacuum unit shown in Figure 4 can also drive a crank, as is customary for vacuum drives of rotary valves, for example on intake systems of internal combustion engines, without the need for an additional joint in the push rod is necessary. It is advantageous that the leadership remotely Point of the crank mechanism is mounted, thereby the angular deflection of the push rod is minimized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Reciprocating Pumps (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Claims (4)

  1. Chambre à dépression pour générer un mouvement linéaire par une dépression, comprenant un boîtier (12), un ressort (14) disposé dans celui-ci, une membrane (13) et une bielle (15) disposée au niveau de la membrane,
    caractérisée en ce que
    la bielle (15) est centrée au niveau de la membrane (13) et logée au niveau du boîtier de la chambre à dépression par un guidage longitudinal (18), et le boîtier (12, 32) présente un tenon (29) engagé dans un alésage (30) de la bielle (15, 31) et formant le guidage longitudinal.
  2. Chambre à dépression selon l'une des revendications précédentes,
    caractérisée en ce que
    la bielle est formée par un élément expansible.
  3. Chambre à dépression selon l'une des revendications précédentes,
    caractérisée en ce qu'
    une articulation est disposée au niveau de la bielle pour l'entraînement d'une manivelle ou pour l'exécution d'un mouvement de pivotement.
  4. Chambre à dépression selon l'une des revendications précédentes,
    caractérisée en ce que
    le boîtier se compose de matière plastique et est conçu en deux parties, les deux parties étant soudées entre elles et la membrane étant intégrée dans la zone de liaison.
EP02719969A 2001-03-02 2002-02-28 Chambre a depression Expired - Lifetime EP1364130B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10110237 2001-03-02
DE10110237 2001-03-02
PCT/EP2002/002176 WO2002070903A1 (fr) 2001-03-02 2002-02-28 Chambre a depression

Publications (2)

Publication Number Publication Date
EP1364130A1 EP1364130A1 (fr) 2003-11-26
EP1364130B1 true EP1364130B1 (fr) 2006-04-19

Family

ID=7676169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02719969A Expired - Lifetime EP1364130B1 (fr) 2001-03-02 2002-02-28 Chambre a depression

Country Status (6)

Country Link
US (1) US7011011B2 (fr)
EP (1) EP1364130B1 (fr)
JP (1) JP4290991B2 (fr)
AT (1) ATE323838T1 (fr)
DE (1) DE50206467D1 (fr)
WO (1) WO2002070903A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2311543B1 (fr) 2004-11-05 2015-07-01 Donaldson Company, Inc. Séparateur d'aréosol
US8057567B2 (en) 2004-11-05 2011-11-15 Donaldson Company, Inc. Filter medium and breather filter structure
MX2007009400A (es) 2005-02-04 2007-08-16 Donaldson Co Inc Separador de aerosol y metodo.
EP1858618B1 (fr) 2005-02-22 2009-09-16 Donaldson Company, Inc. Separateur d aerosol
DE102016005358A1 (de) * 2015-06-01 2016-12-01 Mann+Hummel Gmbh Dichtelement, Ringfilterelement, Ölabscheider sowie Verfahren zum Öffnen des Filtergehäuses eines Ölabscheiders
EP3842119B1 (fr) 2015-06-01 2023-06-21 MANN+HUMMEL GmbH Élement de filtre, separateur d'huile et procede de reglage d'une pression presente dans un systeme d'aeration de carter de vilebrequin

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380349A (en) * 1966-08-31 1968-04-30 F & E Mfg Company Vacuum motor
US3799008A (en) * 1972-06-14 1974-03-26 Gen Motors Corp Throttle controlled by transmission ratio
GB1462180A (en) * 1973-08-28 1977-01-19 Twiflex Couplings Actuating device
US4391184A (en) * 1979-10-06 1983-07-05 Ken Yamane Diaphragm actuator
US4377070A (en) * 1980-06-13 1983-03-22 The Garrett Corporation Turbocharger control actuator
US4403538A (en) * 1980-09-02 1983-09-13 The Garrett Corporation Turbocharger control actuator
US4669264A (en) * 1985-08-26 1987-06-02 Jacob Kobelt Apparatus and method for load control of an engine
DE3909737A1 (de) * 1989-03-23 1990-09-27 Wolf Woco & Co Franz J Fluidbeaufschlagbarer stell- und steuerantrieb
US5363743A (en) * 1993-04-14 1994-11-15 Eaton Corporation Fluid pressure servomotor
JPH07110010A (ja) * 1993-10-08 1995-04-25 Nippon Tekunika Kk アクチュエータ
JPH08296448A (ja) * 1995-04-26 1996-11-12 Aisan Ind Co Ltd ウェイストゲート・アクチュエータ
DE19623961A1 (de) 1996-06-15 1997-12-18 Bosch Gmbh Robert Pneumatisches Schaltelement
JP3465737B2 (ja) * 1997-03-28 2003-11-10 Ｎｏｋ株式会社 ダイアフラムアクチュエータ

Also Published As

Publication number Publication date
WO2002070903A9 (fr) 2003-01-23
JP4290991B2 (ja) 2009-07-08
US20040206232A1 (en) 2004-10-21
ATE323838T1 (de) 2006-05-15
JP2004522082A (ja) 2004-07-22
EP1364130A1 (fr) 2003-11-26
US7011011B2 (en) 2006-03-14
WO2002070903A1 (fr) 2002-09-12
DE50206467D1 (de) 2006-05-24

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