WO2002070903A9 - Unterdruckdose - Google Patents
UnterdruckdoseInfo
- Publication number
- WO2002070903A9 WO2002070903A9 PCT/EP2002/002176 EP0202176W WO02070903A9 WO 2002070903 A9 WO2002070903 A9 WO 2002070903A9 EP 0202176 W EP0202176 W EP 0202176W WO 02070903 A9 WO02070903 A9 WO 02070903A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vacuum
- push rod
- housing
- longitudinal guide
- membrane
- Prior art date
Links
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 can according to the preamble of independent claim 1.
- a vacuum box in the form of a pneumatic switching element is known from DE 196 23 961 A1.
- This is connected to a vacuum source and has a pressure chamber in which an actuator which can be displaced against the force of a spring element by a vacuum is arranged.
- This actuator is connected to an actuating device which is led out of the pressure chamber.
- the spring element is arranged outside the pressure chamber and engages the actuating device or can be fastened to a joint arranged outside.
- a guidance of the push rod over the spring cannot be realized with this construction.
- the push rod will tilt and thus rub the membrane of the vacuum box on the housing or come to rest, which can damage the membrane.
- the membrane can be rubbed, which can lead to failure of the vacuum box. This leads to inaccuracies in the transfer of the vacuum 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 precise guidance and thus an exact transmission of the vacuum in a linear or rotating movement. This object is achieved 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 box via a longitudinal guide. This makes canting impossible.
- the longitudinal guide can be designed that low frictional forces act and thus do not distort the transmission of the movement.
- One embodiment of the invention provides for the longitudinal guide to be provided with a slide bearing, alternatively a ball bearing bush can also be used.
- the advantage of the ball bearing bush is the extremely low friction and therefore the high precision of the vacuum socket.
- a bearing pin can also be arranged in the lid of the vacuum box for longitudinal guidance. This bearing pin engages through the compression spring in a bore of the push rod or the push rod is guided through this bearing pin.
- the advantage of this type of longitudinal guidance is that the interaction of the two elements, which are arranged in the clean air section, is not impaired by environmental influences.
- the compression spring can be made more unstable, since the guide prevents it from buckling. Furthermore, this type of longitudinal guidance can also be integrated into small installation spaces, since no additional installation space and no additional components are required.
- the bearing pin can also be stored in the push rod with greater play, in particular several millimeters. As a result, the use of joints, which serve to compensate for rotary movements of a crank, is not necessary.
- the push rod can be provided with an expansion element, so that a vacuum box is created which, in addition to the adjustment due to the vacuum, also performs an adjustment due to temperature influences.
- Systems of this type are used in automobile construction, in particular in the cold / warm air control of internal combustion engines.
- a further embodiment of the invention lies in the addition of a push rod to the joint.
- the longitudinal guide is provided with a suitable sealing element, the vacuum chamber can be sealed via the longitudinal guide; no additional sealing elements are required.
- the entire system is enclosed in a housing, which is preferably made 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 connection, and can be embedded in the parting plane of the two parts.
- FIG. 2 shows a vacuum box with a longitudinal guide and a joint
- Figure 3 shows a vacuum box with an expansion element
- Figure 4 shows a vacuum can with a bearing pin.
- FIG. 1 shows a vacuum box 10 consisting of a cover 11, a housing 15 12, a membrane 13 arranged therein, a compression spring 14 and a push rod 15.
- the compression spring 14 directs a force on the push rod 15. If a vacuum is present in the vacuum chamber 16, the push rod pulled inwards. When the negative pressure is reduced, the push rod slides outwards and can thus adjust an element (not shown here) in the form of a flap, shaft or the like.
- the 20 push rod is enclosed by the membrane.
- the connection between the membrane and the push rod is selected such that it simultaneously forms a seal for the vacuum chamber 16. It can be seen that with a laterally acting force on the push rod, it tends to deflect, that is, the instability of the spring leads to difficulties with regard to guidance. This can result in the push rod rubbing against the housing or jamming, which leads to inaccuracies and incorrect positions.
- FIG. 2 shows a vacuum can 10 with a longitudinal guide.
- the same parts are provided with the same reference numerals.
- the push rod 15 is with a push rod head 17 Mistake.
- the membrane 13 lies sealingly against this.
- a longitudinal guide in the form of a slide bearing 18 is provided at the passage of the push rod 15 through the housing 12.
- This slide bearing has a seal 19, which ensures that the vacuum chamber 16 is reliably sealed.
- the vacuum chamber is connected via a line 20 5 to a vacuum sensor, not shown here.
- the plain bearing has a plain bearing sleeve 21 which is matched to the material of the push rod in terms of material and has a low coefficient of friction.
- the slide bearing is also provided with a bearing cover 22, which also serves as a stop for the push rod head 17 at a maximum negative pressure.
- a link 10 23 is provided on the push rod, with this system a crank can be driven. It is also possible to perform a swiveling movement so that an additional joint in the push rod is not
- FIG 3 shows a vacuum can with an additional expansion element 24.
- expansion elements are also known under the name wax thermostat and lead
- the expansion element itself is axially movable, mounted in the housing 12 of the vacuum box and in such a way that a plastic carrier 25, which is connected to the membrane 13, moves this element due to the vacuum present. If an additional temperature change occurs, the expansion element 24 becomes an axial movement against the
- FIG. 4 shows a variant in which the cover 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 guides this push rod, which means that a
- the guide via the plunger 29 can also be both a slide bearing guide and a ball bearing bushing guide.
- the advantage of this guide is that the housing can be made relatively simple and contamination of the guide by the internal plunger is effectively prevented.
- the vacuum box shown in FIG. 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 an additional joint being required
- the push rod is necessary. It is advantageous that the leadership is the most distant Point from the crank mechanism, this minimizes the angular deflection of the push rod.
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)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002569590A JP4290991B2 (ja) | 2001-03-02 | 2002-02-28 | 負圧作動器 |
EP02719969A EP1364130B1 (de) | 2001-03-02 | 2002-02-28 | Unterdruckdose |
DE50206467T DE50206467D1 (de) | 2001-03-02 | 2002-02-28 | Unterdruckdose |
US10/652,560 US7011011B2 (en) | 2001-03-02 | 2003-09-02 | Vacuum unit for producing a stroke movement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10110237 | 2001-03-02 | ||
DE10110237.2 | 2001-03-02 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/652,560 Continuation US7011011B2 (en) | 2001-03-02 | 2003-09-02 | Vacuum unit for producing a stroke movement |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002070903A1 WO2002070903A1 (de) | 2002-09-12 |
WO2002070903A9 true WO2002070903A9 (de) | 2003-01-23 |
Family
ID=7676169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/002176 WO2002070903A1 (de) | 2001-03-02 | 2002-02-28 | Unterdruckdose |
Country Status (6)
Country | Link |
---|---|
US (1) | US7011011B2 (de) |
EP (1) | EP1364130B1 (de) |
JP (1) | JP4290991B2 (de) |
AT (1) | ATE323838T1 (de) |
DE (1) | DE50206467D1 (de) |
WO (1) | WO2002070903A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2564057T3 (es) | 2004-11-05 | 2016-03-17 | Donaldson Company, Inc. | Separador de aerosol |
US8057567B2 (en) | 2004-11-05 | 2011-11-15 | Donaldson Company, Inc. | Filter medium and breather filter structure |
EA011777B1 (ru) | 2005-02-04 | 2009-06-30 | Дональдсон Компани, Инк. | Фильтр и система вентиляции картера |
CN101163534A (zh) | 2005-02-22 | 2008-04-16 | 唐纳森公司 | 气溶胶分离器 |
DE102016005357A1 (de) * | 2015-06-01 | 2016-12-01 | Mann+Hummel Gmbh | Filterelement, Ölabscheider sowie Verfahren zur Regelung des in einem K[urbel]G[ehäuse]E[ntlüftungs]-System herrschenden Drucks |
EP3101244B1 (de) * | 2015-06-01 | 2021-04-07 | Mann + Hummel Gmbh | Dichtelement, ringfilterelement, ölabscheider sowie verfahren zum öffnen des filtergehäuses eines ölabscheiders |
Family Cites Families (13)
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 |
-
2002
- 2002-02-28 EP EP02719969A patent/EP1364130B1/de not_active Expired - Lifetime
- 2002-02-28 JP JP2002569590A patent/JP4290991B2/ja not_active Expired - Fee Related
- 2002-02-28 WO PCT/EP2002/002176 patent/WO2002070903A1/de active IP Right Grant
- 2002-02-28 AT AT02719969T patent/ATE323838T1/de not_active IP Right Cessation
- 2002-02-28 DE DE50206467T patent/DE50206467D1/de not_active Expired - Lifetime
-
2003
- 2003-09-02 US US10/652,560 patent/US7011011B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1364130A1 (de) | 2003-11-26 |
EP1364130B1 (de) | 2006-04-19 |
ATE323838T1 (de) | 2006-05-15 |
JP4290991B2 (ja) | 2009-07-08 |
DE50206467D1 (de) | 2006-05-24 |
US7011011B2 (en) | 2006-03-14 |
JP2004522082A (ja) | 2004-07-22 |
US20040206232A1 (en) | 2004-10-21 |
WO2002070903A1 (de) | 2002-09-12 |
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