IT9067644A1 - ELECTROMAGNETIC VALVE. - Google Patents
ELECTROMAGNETIC VALVE. Download PDFInfo
- Publication number
- IT9067644A1 IT9067644A1 IT067644A IT6764490A IT9067644A1 IT 9067644 A1 IT9067644 A1 IT 9067644A1 IT 067644 A IT067644 A IT 067644A IT 6764490 A IT6764490 A IT 6764490A IT 9067644 A1 IT9067644 A1 IT 9067644A1
- Authority
- IT
- Italy
- Prior art keywords
- magnetic anchor
- magnetic
- anchor
- stroke
- annular
- Prior art date
Links
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 1
- 230000010355 oscillation Effects 0.000 claims 1
- 239000000725 suspension Substances 0.000 claims 1
- 230000005284 excitation Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
- F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
- F16F9/461—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall characterised by actuation means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Description
DESCRIZIONE dell'invenzione industriale dal titolo: "Valvola elettromagnetica" DESCRIPTION of the industrial invention entitled: "Electromagnetic valve"
DESCRIZIONE DESCRIPTION
La presente invenzione riguarda una valvola elettromagne tica con ancora magnetica a corsa ridotta secondo il preambolo della rivendicazione 1. The present invention relates to an electromagnetic valve with a reduced stroke magnetic anchor according to the preamble of claim 1.
Una caratteristica fondamentale di tali valvole elettromagnetiche è data dal fatto che in posizione abbassata dell*· ancora magnetica si applica sull'ancora una forza relativamente ridotta all'eccitazione dell'elettromagnete ovvero l'elettromagnete deve essere realizzato molto grande per poter esercitare forze corrispondentemente più grandi nello strato sopra indicato. A questo fine è noto provvedere un tubo polare con una interruzione non magnetica. In questa soluzione risulta svantaggioso il fatto che la transizione "magneticonon-magnetico-magnetico" produce costi elevati per il tubo polare. A fundamental characteristic of these solenoid valves is given by the fact that in the lowered position of the magnetic anchor a relatively small force is applied to the anchor upon the excitation of the electromagnet, i.e. the electromagnet must be made very large in order to exert correspondingly greater forces. large in the above layer. For this purpose it is known to provide a pole tube with a non-magnetic interruption. In this solution it is disadvantageous that the "magneticon-magnetic-magnetic" transition produces high costs for the polar tube.
Dal DE-OS-3518 327 è noto disporre fra il nucleo polare e l'ancora magnetica un risalto ed un corrispondente incavo, realizzati a forma di tronco di cono. Nel movimento assiale dell'ancora magnetica cambia così il traferro, mentre nella posizione abbassata dell’ancora magnetica è presente un traferro iniziale relativamente maggiore. Quindi anche qui con l'ancora magnetica abbassata viene esercitata su di questa una forza magnetica relativamente ridotta all1 eccitazione dell'elettromagnete. From DE-OS-3518 327 it is known to arrange between the polar core and the magnetic anchor a projection and a corresponding recess, made in the shape of a truncated cone. In the axial movement of the magnetic anchor the air gap thus changes, while in the lowered position of the magnetic anchor there is a relatively greater initial air gap. Thus, even here, with the magnetic anchor lowered, a relatively small magnetic force is exerted on it upon excitation of the electromagnet.
Lo scopo della presente invenzione è di migliorare le valvole elettromagnetiche note soprattutto per quanto riguarda il fatto che con una bobina magnetica data venga esercitata, con l'ancora abbassata, una forza quanto più grande possibile su di essa. The object of the present invention is to improve known electromagnetic valves above all as regards the fact that with a given magnetic coil, with the anchor lowered, as great a force as possible is exerted on it.
Questo scopo viene raggiunto secondo la presente invenzione per il fatto che anche nella posizione abbassata della ancora magnetica viene previsto un traferro ridotto con una estensione radiale inalterata su tutta la corsa fra il risalto e l'incavo. Con questo traferro molto ridotto realizzato in modo da rimanere inalterato nell'estensione radiale viene esercitata una forza elevata sull'ancora magnetica in posizione abbassata all'eccitazione della bobina magnetica. Questa forza magnetica elevata esercitata sull'ancora magnetica in posizione abbassata viene ottenuta con una struttura molto semplice dell'elettromagnete. A questo fine secondo una caratteristica il risalto viene definito da un'appendice anwulare nella zona del diametro esterno del nucleo polare mentre l'incavo è definito da una corrispondente cava anulare nell'ancora magnetica. This object is achieved according to the present invention due to the fact that even in the lowered position of the magnetic anchor a reduced air gap is provided with an unchanged radial extension over the entire stroke between the projection and the recess. With this very small air gap made so as to remain unchanged in the radial extension, a high force is exerted on the magnetic anchor in the lowered position when the magnetic coil is energized. This high magnetic force exerted on the magnetic anchor in the lowered position is achieved with a very simple structure of the electromagnet. For this purpose, according to a characteristic, the projection is defined by an annular appendage in the area of the outer diameter of the polar core while the recess is defined by a corresponding annular slot in the magnetic anchor.
Una forma di attuazione particolarmente vantaggiosa viene ottenuta secondo l'invenzione per il fatto che l'appendice anulare presenta una estensione assiale corrispondente alla corsa dell'ancora magnetica. Le prove hanno dimostrato che con una tale estensione assiale dell'appendice anulare le forze che agiscono nello stato abbassato dell'ancora magnetica possono essere notevolmente inalzate. Secondo l'invenzione l'appendice anulare presenta una ampiezza radiale di circa l'otto percento del diametro dell'ancora magnetica. Secondo le forme di realizzazione descritte la forza esercitata sulla ancora magnetica alla eccitazione dell'elettromagnete risulta notevolmente aumentata. A particularly advantageous embodiment is obtained according to the invention in that the annular appendage has an axial extension corresponding to the stroke of the magnetic anchor. Tests have shown that with such an axial extension of the annular appendage the forces acting in the lowered state of the magnetic anchor can be significantly raised. According to the invention, the annular appendage has a radial width of about eight percent of the diameter of the magnetic anchor. According to the embodiments described, the force exerted on the magnetic anchor upon excitation of the electromagnet is considerably increased.
Si è dimostrato inoltre vantaggioso il fatto che il tubo polare, è realizzato secondo l'invenzione di materiale nonmagnetico e si impegna in una cavità anulare disposta sul diametro esterno del nucleo polare. It has also proved advantageous that the polar tube is made according to the invention of non-magnetic material and engages in an annular cavity arranged on the outer diameter of the polar core.
L'invenzione verrà ulteriormente descritta nel seguito sulla base delle forma di attuazione rappresentata nel disegno. The invention will be further described below on the basis of the embodiment shown in the drawing.
La figura illustra una valvola elettromagnetica 1 provvista di un involucro magnetico 2. Nell'involucro magnetico 2 si trova una bobina magnetica 3, mentre un nucleo polare 4 limita il movimento assiale di un'ancora magnetica 6 nel]' eccitazione della bobina magnetica 3. Il nucleo polare 4 è previsto di un'appendice anulare 5 la quale coopera una cava anulare 7 dell'ancora magnetica 6. L'ancora magnetica 6 è illustrata in posizione abbassata, mentre una molla di ritegno 8 preme l'ancora magnetica 6 contro una sede di valvola 9 e questa ancora magnetica è realizzata in uno solo pezzo con un corpo di valvola 10 che appoggia a tenuta sulla sede di valvola 9. Un tubo polare 11 in materiale non-magnetico impegna una cavità anulare 12 situata sul diametro esterno del nucleo polare 4. In questa posizione abbassata dell'ancora magnetica 6 il foro 13 è chiuso. Per aprire il foro 13 la bobina magnetica 3 viene eccitata, per cui le linee di campo, a causa di un traferro 14 molto ridotto esercitano una forza elevata contro la forza attiva della molla di richiamo 8 sull'ancora magnetica 6, portandola in posizione aperta. Il movimento di apertura viene limitato dalle superficie frontali dell'ancora magnetica 6 e del nucleo polare 4. The figure illustrates an electromagnetic valve 1 provided with a magnetic casing 2. In the magnetic casing 2 there is a magnetic coil 3, while a polar core 4 limits the axial movement of a magnetic anchor 6 in the excitation of the magnetic coil 3. The polar core 4 is provided with an annular appendage 5 which cooperates with an annular slot 7 of the magnetic anchor 6. The magnetic anchor 6 is shown in the lowered position, while a retaining spring 8 presses the magnetic anchor 6 against a valve seat 9 and this magnetic anchor is made in one piece with a valve body 10 which rests hermetically on the valve seat 9. A pole tube 11 made of non-magnetic material engages an annular cavity 12 located on the external diameter of the core polar 4. In this lowered position of the magnetic anchor 6 the hole 13 is closed. To open the hole 13 the magnetic coil 3 is energized, so that the field lines, due to a very small air gap 14, exert a high force against the active force of the return spring 8 on the magnetic anchor 6, bringing it to the open position . The opening movement is limited by the front surfaces of the magnetic anchor 6 and the polar core 4.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3927150A DE3927150A1 (en) | 1989-08-17 | 1989-08-17 | Magnetic valve with short stroke armature - pole cure and magnetic armature cooperating via protrusion and corresp. recess |
Publications (3)
Publication Number | Publication Date |
---|---|
IT9067644A0 IT9067644A0 (en) | 1990-08-16 |
IT9067644A1 true IT9067644A1 (en) | 1992-02-16 |
IT1240707B IT1240707B (en) | 1993-12-17 |
Family
ID=6387286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT67644A IT1240707B (en) | 1989-08-17 | 1990-08-16 | ELECTROMAGNETIC VALVE. |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE3927150A1 (en) |
ES (1) | ES2025925A6 (en) |
FR (1) | FR2651029B1 (en) |
IT (1) | IT1240707B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4022143C2 (en) * | 1990-07-11 | 1995-11-23 | Fichtel & Sachs Ag | magnetic valve |
DE4122517A1 (en) * | 1991-07-08 | 1993-01-21 | Bosch Gmbh Robert | Electromagnetic valve for vehicle automatic transmission - with strap-shaped flux conduction element partially enclosing outside of relay housing |
DE4123141C1 (en) * | 1991-07-12 | 1992-07-30 | Boge Ag, 5208 Eitorf, De | |
DE4213803A1 (en) * | 1992-04-27 | 1993-10-28 | Teves Gmbh Alfred | Pilot operated valve for chassis control systems |
JPH0893947A (en) * | 1994-09-28 | 1996-04-12 | Aisin Seiki Co Ltd | Solenoid valve device and manufacture thereof |
DE19518304C2 (en) * | 1995-05-18 | 1998-10-15 | Baelz Gmbh Helmut | Safety valve device |
DE10209500A1 (en) * | 2002-03-05 | 2003-09-18 | Bosch Gmbh Robert | Electromagnetic valve, especially for vehicle automatic gearbox, has recess formed in end surface of closure element larger than centering recess caused during manufacture |
US6877717B2 (en) * | 2003-03-14 | 2005-04-12 | Kelsey-Hayes Company | Control valve for a vehicular brake system |
DE102010048808A1 (en) | 2010-10-20 | 2012-04-26 | Eto Magnetic Gmbh | Electromagnetic actuator |
DE102011089594A1 (en) * | 2011-12-22 | 2013-06-27 | Continental Automotive Gmbh | Intake valve for pump, has valve portion having upper region which is in contact with pin to guide pin, and lower region with sealing seat so that inlet valve is closed when sealing element rests against sealing seat |
DE102019203898A1 (en) * | 2018-04-04 | 2019-10-10 | Zf Friedrichshafen Ag | Adjustable damper valve device |
DE102018109640A1 (en) * | 2018-04-23 | 2019-10-24 | Tries Gmbh & Co. Kg | Monostable electromagnetic hydraulic valve and manufacturing method therefor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7118466U (en) * | 1971-09-09 | Wessel G | Electromagnet | |
DE8310399U1 (en) * | 1983-04-09 | 1983-10-06 | A. U. K. Mueller Gmbh & Co Kg, 4000 Duesseldorf | ACTUATING DEVICE FOR AN ELECTROMAGNETIC VALVE |
USRE32860E (en) * | 1983-12-23 | 1989-02-07 | G. W. Lisk Company, Inc. | Solenoid construction and method for making the same |
DE3518327A1 (en) * | 1985-05-22 | 1986-11-27 | Boge Gmbh, 5208 Eitorf | HYDRAULIC, ADJUSTABLE VIBRATION DAMPER |
DE3709474C1 (en) * | 1987-03-23 | 1988-03-31 | Bosch Gmbh Robert | Solenoid valve |
JPS63259236A (en) * | 1987-04-13 | 1988-10-26 | ボーゲ・アクチェンゲゼルシャフト | Adjustable hydraulic type shock absorber |
-
1989
- 1989-08-17 DE DE3927150A patent/DE3927150A1/en not_active Withdrawn
-
1990
- 1990-08-14 ES ES909002193A patent/ES2025925A6/en not_active Expired - Fee Related
- 1990-08-14 FR FR9010495A patent/FR2651029B1/en not_active Expired - Fee Related
- 1990-08-16 IT IT67644A patent/IT1240707B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
FR2651029B1 (en) | 1993-07-16 |
ES2025925A6 (en) | 1992-04-01 |
DE3927150A1 (en) | 1991-02-21 |
FR2651029A1 (en) | 1991-02-22 |
IT1240707B (en) | 1993-12-17 |
IT9067644A0 (en) | 1990-08-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19940729 |