WO2010108877A1 - Relais, en particulier relais de démarreur pour moteurs à combustion interne et procédé pour sa fabrication - Google Patents

Relais, en particulier relais de démarreur pour moteurs à combustion interne et procédé pour sa fabrication Download PDF

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Publication number
WO2010108877A1
WO2010108877A1 PCT/EP2010/053664 EP2010053664W WO2010108877A1 WO 2010108877 A1 WO2010108877 A1 WO 2010108877A1 EP 2010053664 W EP2010053664 W EP 2010053664W WO 2010108877 A1 WO2010108877 A1 WO 2010108877A1
Authority
WO
WIPO (PCT)
Prior art keywords
pin
relay
head
armature
driver
Prior art date
Application number
PCT/EP2010/053664
Other languages
German (de)
English (en)
Inventor
Michael Stahl
Steffen Huemmer
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 WO2010108877A1 publication Critical patent/WO2010108877A1/fr

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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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding

Definitions

  • the invention relates to a relay, in particular a starting relay for internal combustion engines according to the preamble of claim 1 and a method for its preparation according to the preamble of claim 3.
  • a relay for a starting device of internal combustion engines in which a coupling element, the switching axis of the relay and the magnet armature connected to each other limited slidably.
  • This coupling element welds of the contact bridge with the switch contacts of the relay when the relay is turned off by the accelerated by the armature return spring magnet armature again.
  • the switching axis of the relay protrudes with a head in an axial bore of the relay armature.
  • the relay armature is moved to the yoke and the switching axis is taken after a free travel of the relay armature of a pin used transversely to the anchor hole until reaching the working position.
  • the switching axis of a molded behind the head on the relay anchor shoulder is taken after the relay armature has passed through the free travel of the clutch thus formed.
  • the present solution seeks to design the coupling by constructive measures so that the predetermined by her clutch travel between armature and switching axis during assembly of the relay is individually adjustable.
  • the relay according to the invention with the characterizing features of claim 1 has the advantage over the prior art that a secure tearing together welded relay contacts is realized independently of the manufacturing and assembly tolerances of the relay by an individual adjustment of the clutch. Another advantage is that the coupling is located largely within the contact return spring in the switch cover of the relay, so that the dimensions of the relay remain unchanged.
  • the head of the pin is to be provided with a larger diameter than the axial bore of the switching axis, so that the end face of the switching axis forms a stop for the head of the pin in an expedient manner on the novel coupling.
  • the relay armature is held captive in an appropriate manner in the relay captive by in the rest position the relay of the relay armature is held in the axial direction on the driver and the pin, the head then rests on the front side of the switching axis.
  • the length of the pin is adjusted to the predetermined in the rest position distance between the switching axis and armature driver plus the length of the switching axis in an advantageous manner when assembling the relay.
  • the length of the pin is adjusted at the attachment point of the head or at the attachment point of the driver. It is advantageous if the length of the pin is adjusted by a corresponding An josgen or upsetting the head at the end of the pencil.
  • it is proposed to adjust the length of the pin by placing and securing the head at the end of the pin.
  • the pin is expediently inserted and fastened in a blind hole on the relay-internal end of the driver.
  • the driver, pin and head individually, so that the length of the pin is adjusted during their assembly.
  • the head on the pin and / or the pin on the driver by welding, preferably by friction welding, by screwing, preferably with a cutting thread or by caulking, preferably after screwing together.
  • the length of the pin is adjusted to a preassembled unit consisting of driver, pin, switching axis, contact pressure spring, contact bridge and head.
  • Figure 1 is a starting relay for internal combustion engines in longitudinal section with loose
  • FIG. 3 shows the parts of Figure 2 with a pin and its head as a coupling before joining and
  • FIG. 4 shows various joints between driver and pin or between pin and head.
  • the relay coil 11 is first inserted into the pot-shaped housing 13 together with a guide sleeve 14 made of brass and a magnetic core 15.
  • a magnet armature 16 is axially guided in an opening, which dips into the relay coil 11.
  • a driver 17 In a central bore of the armature 16, a driver 17 is fixed, the axially outwardly projecting end portion acts as a so-called paddle with a fork lever, not shown, a starting device together.
  • a switching axis 18 In a passage opening of the magnetic core 15, a switching axis 18 is guided by means of an insulating sleeve 19.
  • a contact bridge 20 At the outer end of the switching axis 18, a contact bridge 20 is received axially displaceable.
  • the housing 13 of the starting relay 10 is completed by the switch cover 12.
  • the protruding into the interior of the switch cover 12 ends of two contact pins 21 are formed as switching contacts 21 a, which cooperate with the contact bridge 20.
  • the inner end of the switching axis 18 is in the rest position of the relay to the relay inner end of the driver 17 with a distance a (see Figure 2) opposite.
  • a contact return spring 22 which is supported on the one hand at the bottom of the switch cover 12 and on the other hand to a support plate 23 attached to the outer end of the indexing shaft 18.
  • a contact pressure spring 25 is arranged, which is supported on the one hand via an insulating cap 26 on the contact bridge 20 and on the other hand on the front side of the insulating sleeve 19.
  • an armature return spring 27 is inserted, which is supported on the one hand on the end face of the magnetic core 15 and on the other hand at the bottom of a blind hole 28 in the armature 16. All three springs are preloaded, with the stronger biased contact return spring 22 presses the contact bridge 20 against the bias of the contact pressure spring 25 in the rest position.
  • the switching axis 18 is limited to the armature 16 slidably coupled by the driver 17 carries at its relay inner end a pin 29 which is passed through an axial bore 30 of the indexing shaft 18 and provided at its over the switching axis 18 projecting end with a head 29a is, which cooperates with the end of the switching axis 18. From Figure 1 it can be seen that in the rest position of the starter relay 10 of the head 29a of the pin 29 rests on the front side of the switching axis 18 by the head 29a of the pin 29 has a larger diameter than the axial bore 30 of the indexing axis 18th
  • a unit 40 shown in Figure 2 is pre-assembled, the sleeve from the driver 17, the pin 29 with its head 29 a, the switching axis 18 with the insulating material 19, the contact bridge 20 with the insulating cap 26, the support disk 23rd and the contact pressure spring 25 used.
  • To compensate for the manufacturing tolerances of these parts 29 of the predetermined distance a between the indexing axis 18 and driver 17 in the rest position of the starting relay 10 is adjusted over the length of the pin. This Einjust ist done either at the junction of the pin 29 with its head 29a or at the junction of the pin 29 with the driver 17.
  • the length of the pin 29 is the length of the switching axis 18 plus the predetermined distance a between the indexing axis 18 and driver 17th set.
  • the Einjust Schlieren the preassembled unit 40 of Figure 2 to the predetermined distance a can be done in different ways.
  • a prefabricated pin 29 with its finished head 29a is axially pressed and caulked with its free end into a bore of the driver 17.
  • carrier 17 and pin 29 it is possible to integrally form carrier 17 and pin 29 and to impose the head 29a on an extended end portion of the pin 29 or constructivesdorf to Einjust Schlieren the distance a according to Figure 2.
  • Figure 3 shows a further alternative to Einjustieren the preassembled unit 40, an embodiment in which the pin 29 and head 29a are easy to produce items.
  • the pin can be fixed with its ends on the front side of the driver 17 on the one hand and on the head 29a on the other hand, for example by friction welding. Again, to adjust the distance a, the length of the pin is adjusted during assembly.
  • the pin 29 is fixed by turning the driver 17 by the three-pointed tips of the pin 29 dig into the walls of the triangular blind hole 33.
  • the rear end 29b of the pin 29 may be fixed by friction welding in a correspondingly narrow bore of the driver 17 with the required length.
  • the pin end 29b and the threaded hole 31 may be generally formed as a polygon.
  • the extended front end 29c of the pin 29 is provided with a threaded portion on which a head 29a with a correspondingly large female thread 34 is screwed to adjust the required pin length.
  • pin 29 and head 29a are caulked together.
  • the threaded portion at the front end 29b of the pin 29 can be deformed into a triangular shape, which according to solution 4b is inserted into a correspondingly large triangular hole in the head 29a and then fixed by twisting.
  • the end 29e of the front threaded portion on the pin 29 is compressed after adjusting the pin length and thereby the head 29a is fixed to the pin 29.
  • at the front end 29c of the pin 29 in a correspondingly tight bore in the head 29 a pressed and optionally fixed by friction welding.
  • pin 29 and head 29a can be welded together by laser even after Einjust Schlieren the distance a at their joints.
  • the distance A between the magnetic core 15 and magnet armature 16 is greater than the distance a between the driver 17 and the indexing axis 18 according to FIG. 2 by the amount of the margin reserve.
  • the caused by the pin 29 with the head 29a loose coupling causes limited to the distance a axial displacement of armature 16 and switching axis 18 to each other. By this loose coupling, the magnet armature 16 is held in the rest position on the one hand. On the other hand, a possible welding of the contact bridge 20 at the switching contacts 21a is torn open again when switching off the starting relay 10 at too high a current load on small areas of the contacts.
  • the magnet armature 16 is first accelerated by the force of the armature return spring 27 on its way to the rest position by switching off the start relay 10 by initially unhindered the way to the distance a between the indexing axis 18 and driver 17 travels. With the kinetic energy absorbed, the switching axis 18 is now taken from the head 29a of the pin 29 via the driver 17 from the armature 16. With the help of this kinetic energy and the additional force of the contact return spring 22, a welding of the switching contacts 21a with the contact bridge 20 is reliably torn open. The contact bridge 20 is then pressed into the rest position, in which the insulating cap 26 of the contact bridge 20 at the bottom of the blind hole 24 in the magnetic core 15 is supported.
  • the invention is not limited to the illustrated and described embodiment, since the structural design of the starting relay 10, in particular with respect to the magnetic core 15 and magnet armature 16 is variable. In this case, if necessary, the driver 17 can be dispensed with completely and the pin 29 can be fastened directly to the armature 16. Thus, the invention is also quite generally realized in relays whose armature actuate only switch contacts, which may have to be forcibly opened via the pin 29 and its head 29a from the armature 16 when switching off the relay.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un relais, en particulier un relais de démarreur (10) pour moteurs à combustion interne, doté d'une bobine de relais (11) et d'un induit magnétique (16) qui actionne par un axe de commutation (18) un pont de contact (29) qui coopère avec des contacts de commutation (21a), l'axe de commutation et l'induit magnétique étant accouplés l'un à l'autre de manière à pouvoir coulisser de manière limitée. Pour garantir la rupture de contacts soudés et l'ajustement de l'accouplement lâche entre l'axe de commutation (18) et l'induit magnétique (16), une tige (29) de longueur ajustable est fixée sur l'induit magnétique (16) à l'extrémité côté intérieur du relais de son dispositif d'entraînement (17), la tige traversant l'axe de commutation (18) et étant dotée à son extrémité avant d'une tête (29a) qui coopère avec l'extrémité de l'axe de commutation (18).
PCT/EP2010/053664 2009-03-23 2010-03-22 Relais, en particulier relais de démarreur pour moteurs à combustion interne et procédé pour sa fabrication WO2010108877A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009001729A DE102009001729A1 (de) 2009-03-23 2009-03-23 Relais insbesondere Startrelais für Brennkraftmaschinen und Verfahren zu seiner Herstellung
DE102009001729.1 2009-03-23

Publications (1)

Publication Number Publication Date
WO2010108877A1 true WO2010108877A1 (fr) 2010-09-30

Family

ID=42153882

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/053664 WO2010108877A1 (fr) 2009-03-23 2010-03-22 Relais, en particulier relais de démarreur pour moteurs à combustion interne et procédé pour sa fabrication

Country Status (2)

Country Link
DE (1) DE102009001729A1 (fr)
WO (1) WO2010108877A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103943415A (zh) * 2013-01-23 2014-07-23 博世汽车部件(长沙)有限公司 电磁开关及车辆起动机
FR3080485A1 (fr) * 2018-04-18 2019-10-25 Seg Automotive Germany Gmbh Relais de démarreur pour un dispositif de démarreur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798752A2 (fr) * 1996-03-26 1997-10-01 Matsushita Electric Works, Ltd. Dispositif à contact scellé avec possibilité de régler l'écartement des contacts
DE19951116A1 (de) 1999-10-23 2001-04-26 Bosch Gmbh Robert Relais, insbesondere für eine Startvorrichtung
US6552638B2 (en) 2000-07-12 2003-04-22 Delco Remy America, Inc. Semi-solid link solenoid
EP1768152A1 (fr) * 2005-03-28 2007-03-28 Matsushita Electric Works, Ltd. Dispositif de contacts

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB646670A (en) * 1948-10-25 1950-11-29 Cav Ltd Improvements relating to electric starting motors for internal combustion engines
DE2813699C2 (de) * 1978-03-30 1986-08-28 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetischer Schalter, insbesondere für Andrehvorrichtungen von Brennkraftmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798752A2 (fr) * 1996-03-26 1997-10-01 Matsushita Electric Works, Ltd. Dispositif à contact scellé avec possibilité de régler l'écartement des contacts
DE19951116A1 (de) 1999-10-23 2001-04-26 Bosch Gmbh Robert Relais, insbesondere für eine Startvorrichtung
US6552638B2 (en) 2000-07-12 2003-04-22 Delco Remy America, Inc. Semi-solid link solenoid
EP1768152A1 (fr) * 2005-03-28 2007-03-28 Matsushita Electric Works, Ltd. Dispositif de contacts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103943415A (zh) * 2013-01-23 2014-07-23 博世汽车部件(长沙)有限公司 电磁开关及车辆起动机
CN103943415B (zh) * 2013-01-23 2017-06-23 博世汽车部件(长沙)有限公司 电磁开关及车辆起动机
FR3080485A1 (fr) * 2018-04-18 2019-10-25 Seg Automotive Germany Gmbh Relais de démarreur pour un dispositif de démarreur

Also Published As

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DE102009001729A1 (de) 2010-10-14

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