IT9067854A1 - ELECTROMAGNETIC DEVICE TO CONTROL THE POWER SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES. - Google Patents
ELECTROMAGNETIC DEVICE TO CONTROL THE POWER SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES. Download PDFInfo
- Publication number
- IT9067854A1 IT9067854A1 IT067854A IT6785490A IT9067854A1 IT 9067854 A1 IT9067854 A1 IT 9067854A1 IT 067854 A IT067854 A IT 067854A IT 6785490 A IT6785490 A IT 6785490A IT 9067854 A1 IT9067854 A1 IT 9067854A1
- Authority
- IT
- Italy
- Prior art keywords
- fixed contacts
- combustion engine
- internal combustion
- weight
- electromagnetic device
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 239000007858 starting material Substances 0.000 claims description 5
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
- H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/025—Composite material having copper as the basic material
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Electromagnets (AREA)
- Control Of Eletrric Generators (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Contacts (AREA)
Description
DESCRIZIONE del1'invenzione industriale dal titolo: "Dispositivo elettromagneti co di controllo dell'alimentazione di corrente al motore elettrico di avviamento di un motore a combustione interna per autoveicoli" DESCRIPTION of the industrial invention entitled: "Electromagnetic device for controlling the power supply to the electric starter motor of an internal combustion engine for motor vehicles"
DESCRIZIONE DESCRIPTION
La presente invenzione riguarda un dispositivo elettromagnetico di controllo dell'alimentazione di corrente al motore elettrico di avviamento di un motore a combustione interna per autoveicoli. The present invention relates to an electromagnetic device for controlling the power supply to the electric starter motor of an internal combustion engine for motor vehicles.
In particolare l'invenzione ha per oggetto un dispositivo comprendente un elettromagnete includente un solenoide di comando che controlla un organo di contatto mobile atto a cooperare con una coppia di contatti fissi portati da un sopporto di materiale elettricamente isolante; detti contatti fissi comprendendo ciascuno un organo metallico filettato, a guisa di vite, serrato con un carico predeterminato al sopporto mediante un rispettivo dado . In particular, the invention relates to a device comprising an electromagnet including a control solenoid which controls a movable contact member adapted to cooperate with a pair of fixed contacts carried by a support of electrically insulating material; said fixed contacts each comprising a threaded metal member, like a screw, tightened with a predetermined load to the support by means of a respective nut.
Nelle applicazioni per le quali occorre serrare i contatti fissi al sopporto isolante con una coppia di serraggio assai elevata (ad esempio pari a 15 Nm o superiore) i contatti fissi vengono tipicamente realizzati con struttura a due componenti: si predispone una vite di acciaio idonea a resistere alle coppie di serraggio previste, la cui testa presenta un incavo in cui viene fissata una pastiglia di rame elettrolitico con la quale è destinato a cooperare il contatto mobile dell'elettromagnete. L'ancoraggio della pastiglia di rame alla testa della vite di acciaio può essere realizzato mediante saldo—brasatura, oppure mediante serraggio meccanica, ad esempio mediante ricalcatura. In applications where it is necessary to tighten the fixed contacts to the insulating support with a very high tightening torque (for example equal to 15 Nm or higher), the fixed contacts are typically made with a two-component structure: a steel screw suitable for withstand the foreseen tightening torques, the head of which has a recess in which an electrolytic copper pad is fixed with which the mobile contact of the electromagnet is intended to cooperate. The anchoring of the copper pad to the head of the steel screw can be achieved by brazing, or by mechanical tightening, for example by swaging.
I contatti fissi così realizzati risultano assai costosi. Inoltre 1'accoppiamento rame-acciaio comporta una caduta di tensione ed anche problemi di affidabi1ità . The fixed contacts thus made are very expensive. Furthermore, the copper-steel coupling involves a voltage drop and also reliability problems.
Lo scopo della presente invenzione è di realizzare un dispositivo elettromagnetico del tipo sopra specificato, i cui contatti fissi consentono di superare i problemi sopra evidenziati. The object of the present invention is to provide an electromagnetic device of the type specified above, the fixed contacts of which allow the problems highlighted above to be overcome.
Tale scopo viene realizzato secondo l'invenzione mediante un dispositivo del tipo sopra specificato, la caratteristi ca principale del quale risiede nel fatto che i suddetti organi filettati fungenti da contatti fissi sono costituiti da una lega a base di rame, includente cromo e zirconio. This object is achieved according to the invention by means of a device of the type specified above, the main feature of which lies in the fact that the aforesaid threaded members acting as fixed contacts are made of a copper-based alloy, including chromium and zirconium.
Pref er ibi lmente la lega costituente detti contatti fissi comprende il 99.15C in peso di rame, lo 0.8/C in peso di cromo e lo 0.1/C in peso di zirconio. Preferably, the alloy constituting said fixed contacts comprises 99.15C by weight of copper, 0.8 / C by weight of chromium and 0.1 / C by weight of zirconium.
I contatti fissi possono essere realizzati sia mediante lavorazione alla macchina utensile, cioè mediante tornitura, oppure di stampaggio. Fixed contacts can be made either by machining on the machine tool, i.e. by turning, or by molding.
Ulteriori carat t e r i s t i che e vantaggi dell'invenzione appaiono dalla descrizione dettagliata che segue, effettuata con riferimento al disegno alle— gato, fornito a puro titolo di esempio non lim ita— tivo, che mostra in vista parzialmente sezionata un dispositivo e 1 e 11 r omagnet i co di controllo dell 'alimentazione di corrente al motore elettrico di avviamento di un motore a combustione interna per autove i col i . Further characteristics and advantages of the invention appear from the detailed description that follows, made with reference to the attached drawing, provided purely by way of non-limiting example, which shows a partially sectioned view of a device and 1 and 11 r omagnet for controlling the power supply to the electric starter motor of an internal combustion engine for motor vehicles.
Nella figura 1 con 1 è indicato nel suo insieme un dispositivo secondo l 'invenzione. Esso comprende, in modo per sé noto, un elemento di sopporto 2, di materiale elettricamente isolante, che nella realizzazione illustrata ha sostanzialmente la forma di un bicch-iere. A tale elemento è fissato un elettromagnete complessivamente indicato con 3. Tale elettromagnete comprende un involucro 4, all'interno del quale è montato un rocchetto 5 che reca un avvolgimento o solenoide di comando 6. A tale solenoide è associato un nucleo mobile complessivamente indicato con 7. Tale nucleo mobile presenta una testa di estremità 7a che si estende nell'incavo dell'elemento di sopporto 2 e che reca una piastrina 8 di materiale elettricariente conduttore, preferibilmente rame, fungente da contatto mobile. In Figure 1, 1 indicates as a whole a device according to the invention. It comprises, in a per se known manner, a support element 2, of electrically insulating material, which in the illustrated embodiment has substantially the shape of a glass. An electromagnet is fixed to this element, indicated as a whole by 3. This electromagnet comprises a casing 4, inside which a spool 5 is mounted which carries a control winding or solenoid 6. A movable core indicated as a whole is associated with this solenoid with 7. This movable core has an end head 7a which extends into the recess of the support element 2 and which carries a plate 8 of conductive electrical material, preferably copper, which acts as a movable contact.
Nella parete di fondo dell'elemento di sopporto 2, sono ricavate due aperture 9 attraverso le quali si estendono gli steli di due viti IO. Nella realizzazione illustrata tali viti hanno una testa e— sagonale 10a che nella condizione montata risulta affacciata ad una porzione laterale della piastrina 8 fungente da contatto mobile. In the bottom wall of the support element 2, two openings 9 are made through which the stems of two screws 10 extend. In the embodiment illustrated, these screws have a hexagonal head 10a which in the assembled condition faces a lateral portion of the plate 8 which acts as a movable contact.
Le viti 10 sono serrate al sopporto 2 mediante rispettivi dadi 11, previa interposizione di rondelle 12. The screws 10 are tightened to the support 2 by means of respective nuts 11, after the interposition of washers 12.
Le viti 10 sono integralmente realizzate con una lega a base di rame includente piccole quantità di cromo e zirconio. In particolare, tale lega comprende: The screws 10 are integrally made of a copper-based alloy including small amounts of chromium and zirconium. In particular, this alloy includes:
- una quantità compresa fra il 98.57. e il 99.67% e preferibilmente il 99.1%, in peso di rame, - a quantity between 98.57. and 99.67% and preferably 99.1% by weight of copper,
- una quantità compresa fra lo 0.3% e 1'1.2% e preferibilmente lo 0.8%, d.i cromo e - an amount comprised between 0.3% and 1.2% and preferably 0.8%, of chromium and
- una quantità compresa fra lo 0.03% e lo 0.3% e preferibilmente circa lo 0.1% in peso di zirconio. - an amount comprised between 0.03% and 0.3% and preferably about 0.1% by weight of zirconium.
Una siffatta lega è ad esempio la lega n. 2.12.33 secondo la norma DIN 17666. Such an alloy is, for example, alloy no. 2.12.33 according to DIN 17666.
Come si è già detto in precedenza, le viti 10 possono essere realizzate sia mediante lavorazione ad utensile (tornitura) sia di stampaggio. As previously stated, the screws 10 can be made either by tooling (turning) or by molding.
I contatti fissi così realizzati presentano un'ottima conducibilità elettrica, migliore di quella dei contatti realizzati in rame ed acciaio secondo la tecnica anteriore, e sono in grado di resistere alle più elevate coppie di serraggio attualmente previste. The fixed contacts thus made have an excellent electrical conductivity, better than that of the contacts made of copper and steel according to the prior art, and are capable of withstanding the highest tightening torques currently envisaged.
Naturalmente , fermo restando il principio del trovato, le forme di attuazione ed i particolari di realizzazione potranno essere ampiamente variati rispetto a quanto è stato descritto ed illustrato a puro titolo di esempio non limitativo, senza per questo uscire dall'ambito della presente Naturally, the principle of the invention remaining the same, the embodiments and details of construction may be varied widely with respect to what has been described and illustrated purely by way of non-limiting example, without thereby departing from the scope of the present document.
Claims (1)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT67854A IT1241000B (en) | 1990-10-31 | 1990-10-31 | ELECTROMAGNETIC DEVICE TO CONTROL THE POWER SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES. |
| DE69115857T DE69115857T2 (en) | 1990-10-31 | 1991-10-29 | An electromagnetic device for controlling the power supply of an electric starter motor from an internal combustion engine for motor vehicles |
| EP91830460A EP0484291B1 (en) | 1990-10-31 | 1991-10-29 | An electromagnetic device for controlling the current supply to the electric starter motor of an internal combustion engine for motor vehicles |
| ES91830460T ES2084143T3 (en) | 1990-10-31 | 1991-10-29 | AN ELECTROMAGNETIC DEVICE TO CONTROL THE SUPPLY OF CURRENT TO AN ELECTRIC STARTER MOTOR OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT67854A IT1241000B (en) | 1990-10-31 | 1990-10-31 | ELECTROMAGNETIC DEVICE TO CONTROL THE POWER SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT9067854A0 IT9067854A0 (en) | 1990-10-31 |
| IT9067854A1 true IT9067854A1 (en) | 1992-05-01 |
| IT1241000B IT1241000B (en) | 1993-12-27 |
Family
ID=11305809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT67854A IT1241000B (en) | 1990-10-31 | 1990-10-31 | ELECTROMAGNETIC DEVICE TO CONTROL THE POWER SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES. |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0484291B1 (en) |
| DE (1) | DE69115857T2 (en) |
| ES (1) | ES2084143T3 (en) |
| IT (1) | IT1241000B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2697370B1 (en) * | 1992-10-26 | 1994-12-02 | Valeo Equip Electr Moteur | Contactor for motor vehicle internal combustion engine starter. |
| US8278600B2 (en) * | 2007-11-28 | 2012-10-02 | Lincoln Global, Inc. | Welding contractor apparatus with improved heat dissipation |
| DE102008002432A1 (en) * | 2008-06-16 | 2009-12-17 | Robert Bosch Gmbh | Relay contact, electromagnetic switch for an electric machine and manufacturing process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60172116A (en) * | 1984-02-16 | 1985-09-05 | 三菱電機株式会社 | Contact for vacuum breaker |
| US4692192A (en) * | 1984-10-30 | 1987-09-08 | Ngk Insulators, Ltd. | Electroconductive spring material |
| FR2581658B1 (en) * | 1985-05-10 | 1987-07-17 | Centre Nat Rech Scient | NEW ALLOYS WITH HIGH ELECTRICAL AND MECHANICAL PERFORMANCE, THEIR MANUFACTURE AND THEIR APPLICATIONS IN PARTICULAR IN THE ELECTRICAL, ELECTRONIC AND CONNECTIC FIELDS |
| DE3537598A1 (en) * | 1985-10-23 | 1987-05-27 | Bosch Gmbh Robert | ELECTROMAGNETIC SWITCHES, IN PARTICULAR FOR TURNING DEVICES OF INTERNAL COMBUSTION ENGINES |
-
1990
- 1990-10-31 IT IT67854A patent/IT1241000B/en active IP Right Grant
-
1991
- 1991-10-29 DE DE69115857T patent/DE69115857T2/en not_active Expired - Fee Related
- 1991-10-29 ES ES91830460T patent/ES2084143T3/en not_active Expired - Lifetime
- 1991-10-29 EP EP91830460A patent/EP0484291B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES2084143T3 (en) | 1996-05-01 |
| IT1241000B (en) | 1993-12-27 |
| DE69115857T2 (en) | 1996-06-13 |
| IT9067854A0 (en) | 1990-10-31 |
| EP0484291A1 (en) | 1992-05-06 |
| EP0484291B1 (en) | 1995-12-27 |
| DE69115857D1 (en) | 1996-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3945704A (en) | Device for detecting an applied compressive load | |
| EP1677327A1 (en) | Energy supply system for vehicle starter | |
| IT9067854A1 (en) | ELECTROMAGNETIC DEVICE TO CONTROL THE POWER SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES. | |
| WO2005006374A3 (en) | Fusible alloy and thermal fuse | |
| US2191171A (en) | Insulator | |
| ES2142033T3 (en) | ANTI-ROTATION PIECE FOR ELECTRICAL CABLE TERMINAL AND ASSEMBLY BY WELDING THIS PIECE AND ANY ELEMENT. | |
| CH670726A5 (en) | Circuit breaker release system - with thermal and magnetic trip acting on plastic trigger pin | |
| US1991057A (en) | Means for preventing breakage of armature leads | |
| DE102008002432A1 (en) | Relay contact, electromagnetic switch for an electric machine and manufacturing process | |
| US1934784A (en) | Electrical conductor support | |
| DE3037502A1 (en) | Electrical master switch for vehicles - has base bulk contact with central sprung bore hole to support movement for second contact | |
| ITTO940175A1 (en) | ELECTRICAL DEVICE WITH CONNECTION TERMINAL EQUIPPED WITH AN INDICATOR, SUCH AS A JUNCTION BLOCK OR OTHERS. | |
| ITTO960240A1 (en) | GLOW PLUG, PARTICULARLY FOR DIESEL ENGINES | |
| RU17238U1 (en) | AUTOMATIC AC SWITCH | |
| JPS6333482Y2 (en) | ||
| EP1353433A2 (en) | Electric motor with a ceramic shaft | |
| SU1373780A1 (en) | Arrangement for electric heating of reinforcement bars | |
| DE1287682B (en) | ||
| DE382958C (en) | Putty-free contact wire insulator for cranes, electric transport railways, etc. like | |
| CN104299761A (en) | Oil-immersed type distribution transformer pile head | |
| JPS63183558U (en) | ||
| US1088157A (en) | Manufacture of electrical resistances. | |
| IT9067864A1 (en) | CONTROL DEVICE FOR THE CURRENT SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE | |
| DE741325C (en) | Explosion-proof or gas-tight encapsulated electrical installation switchgear | |
| DE683158C (en) | Roller switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19971031 |