EP1342253B1 - Procede de revetement d'un relais, et relais fabrique selon ce procede - Google Patents

Procede de revetement d'un relais, et relais fabrique selon ce procede Download PDF

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Publication number
EP1342253B1
EP1342253B1 EP01995562A EP01995562A EP1342253B1 EP 1342253 B1 EP1342253 B1 EP 1342253B1 EP 01995562 A EP01995562 A EP 01995562A EP 01995562 A EP01995562 A EP 01995562A EP 1342253 B1 EP1342253 B1 EP 1342253B1
Authority
EP
European Patent Office
Prior art keywords
relay
seal
housing
lacquer
joint
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
EP01995562A
Other languages
German (de)
English (en)
Other versions
EP1342253A1 (fr
Inventor
Thomas Kleinbeck
Guenter Woelfel
Karl-Wilhelm Boeker
Herbert Heidt
Max Reddmann
Rald Boepple
Andreas Hamerich
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.)
Robert Bosch GmbH
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 EP1342253A1 publication Critical patent/EP1342253A1/fr
Application granted granted Critical
Publication of EP1342253B1 publication Critical patent/EP1342253B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • 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

Definitions

  • relays with relay housings are known whose corrosion protection consists of a galvanically applied chemical coating.
  • the previously galvanized housing are then, for example, yellow chromated or black chromated.
  • the corrosion protection is occasionally also achieved by conventional organic coating materials, for example by means of water-based paints.
  • the mentioned methods require more than 30 minutes a relatively long process time until the coating is applied and cured. The amount of waste generated by these processes is considerable. If the quality requirements for the coating increase, they can no longer be met with the methods mentioned.
  • a relay according to the preamble of claim 11 is known from the document US Pat. No. 2,955,327 known.
  • the inventive method for coating a relay having the features of the main claim has the advantage that the joint between two housing parts of a relay receives a reliable, quickly produced seal. Due to the short drying time it is possible to clearly to use smaller systems for coating. The corrosion protection and the quality of the surface of the relay improve considerably compared to the previous one.
  • the uncured paint seal By applying the uncured paint seal as a liquid strip on the joint precise positioning of the paint seal is achieved on the joint. In contrast to a large-scale spraying so the paint seal can be targeted and applied without loss or waste. The same applies, in principle, to the lacquer seal sprayed in a targeted and fluid manner onto the joint.
  • the paint strip or the sprayed seal can be particularly economically applied around the relay.
  • the effectiveness of the paint seal is independent of the adhesiveness or other properties of a previously applied flat finish of the housing.
  • the application of the paint seal after the surface coating of the housing is particularly advantageous if the surface coating or the paint used contains color particles. If the liquid varnish seal were covered by a colored varnish layer, the varnish seal could not or only with difficulty be cured by means of ultraviolet radiation.
  • the housing is pretreated, for example with a phosphating.
  • Adhesion of UV-curable coatings is achieved with all metals and a variety of plastics (e.g., thermosets).
  • the paint seal is applied by at least one nozzle, which is guided by touching by means of a guide member on the housing, it is achieved that despite any manufacturing inaccuracies, the paint seal is applied to the joint.
  • the accurate positioning of the guide member by touching the relay in the joint - which is a groove to the outside - a precise guidance of the guide member is possible.
  • the positioning can also be done without contact. An application of the paint seal at an unanticipated point is thereby avoided.
  • the inventive method is particularly advantageously applied to a relay of a starting device for internal combustion engines.
  • the coating of a relay by means of UV-curable lacquer is insensitive to fuels and lubricants as well as water and various cleaning agents commonly used in engine washes.
  • the paint seal is particularly insensitive to thermal expansion and thus reliably seals the relay housing.
  • FIG. 1a shows a relay according to the invention in a side view
  • FIG. 1b shows the relay in a side view from the right
  • Figure 1c shows the relay in a side view from the left
  • FIG. 2 shows a detail of the relay FIG. 1a
  • FIG. 3 shows a partial cross section through the relay at the joint between the coil housing and the relay cover
  • FIG. 4 shows a similar section of the relay in a second embodiment
  • FIG. 5 shows a partial cross section through the relay with two different representations to apply the paint seal
  • the FIGS. 6a to 6e show different sections of the method according to the invention.
  • FIG. 1a a relay 10 is shown for an unillustrated starting device for internal combustion engines.
  • the relay 10 has a first housing part 13, in the embodiment as a coil housing for a feed coil of the relay 10.
  • a relay cover is provided, which carries the electrical connection elements to a starter battery and a starter motor.
  • the first housing part 13 has at its in the FIG. 1a illustrated left end of a cylindrical annular portion 19, the outer visible end of a relay opening, not shown, into which an electromagnetically excitable relay core 22 is inserted.
  • the first housing part 13 has at its, the second housing part 16 facing the end 25 a bead 28, through which the second housing part 16 is fixedly connected to the first housing part 13.
  • This bead 28 allows a positive fastening of the first housing part 13 with the second housing part 16.
  • the relay 10 has a longitudinal axis 29.
  • FIG 1c the plan view of the relay core 22 is shown.
  • 31 three threaded holes 34 are introduced in an annular end face.
  • the relay 10 is usually to be attached to a drive bearing plate of the starting device.
  • the lateral surface of the complete, in the FIGS. 1a to 1c relay shown is coated with a UV radiation-curing paint 43.
  • the threaded or threaded holes 34 remain paint free.
  • FIG. 2 is a partial section through the transition area or designated as the joint area shown in which the second housing part 16 is fixedly connected by means of the crimping edge 28 with the first housing part 13.
  • an already mentioned joint 37 is present between the first housing part 13 and the second housing part 16. Untreated and thus uncoated this joint 37 carries the risk that penetrate through the known capillary effect through this joint 37 foreign matter such as liquids (oil, water, ...) in the relay 10 and this can subsequently be destroyed (corrosion).
  • the joint 37 is sealed at its end directed to the outside of the relay 10 by means of a paint seal 40.
  • the first housing part 13 is usually made of a corrosion-prone metal. Therefore, the first housing part 13 is painted.
  • the paint seal 40 is applied and then provided the first housing part 13 with a paint layer.
  • the lacquer layer 43 covers the housing part 13 at least from the lacquer seal 40 to the cylindrical annular portion 19.
  • FIG. 3 is a second embodiment according to the section line in FIG. 1a shown.
  • This embodiment differs from the embodiment FIG. 2 in that the first housing part 13 and the second housing part 16 is first provided with the continuous lacquer layer 43 and is provided in the region of the outwardly directed end of the joint 37 with the lacquer seal 40.
  • the need for this order arises from the fact that the lacquer layer 43 in the Vereich of the outwardly directed end of the joint 37 may no longer be contiguous and thus a reliable seal is not guaranteed.
  • FIG. 4 is shown how and by what means the paint seal 40 is applied to the outwardly directed end of the joint 37.
  • a first procedure is shown on the left side of the FIG. 4 .
  • a continuous paint strip is produced by means of a nozzle 46, which is connected to the outwardly directed end of the Joint 37 is positioned.
  • a continuous circumferential paint seal 40 is thereby finally produced.
  • a second embodiment for the application of the paint seal 40 is shown.
  • the paint is also applied with a nozzle 46, wherein in this nozzle the paint is conveyed at high pressure and thus can be sprayed.
  • the paint is sprayed in this example and forms a continuous paint seal 40 at equally continuous rotation about the axis 52 at the outward end of the joint 37.
  • the end of the relay 10 is shown in fragmentary form, which has the cylindrical annular portion 19.
  • it is also intended to coat lacquer on the annular end face 31 and in the region of the angle 55, wherein the lacquer layer on the annular end face 31 is thicker than at the angle 55.
  • FIGS. 6a to 6e the individual process steps are shown.
  • FIG. 6a is provided to apply in a step S LD, the uncured paint seal 40 at the outwardly directed end of the joint 37 as sprayed and in a further step S H, the paint layer 43 and the paint seal 40 to cure by means of ultraviolet radiation.
  • FIG. 6b is provided in a further embodiment of the method, first apply the lacquer layer 43 in step S LSV before the uncured lacquer seal 40 is applied in step S LD . It is characterized on the freshly painted relay 10 a wet Paint seal 40 applied. After applying the paint seal 40 in step S LD is provided to cure the entire paint coating, consisting of the paint layer 43 and the paint seal 40 in step S H.
  • the procedure according to FIG. 6b leads to the exemplary embodiment FIG. 3 ,
  • step S LD is first carried out, then the lacquer layer 43 is applied in method step S LSn , and then both lacquer layers are cured together in step S H.
  • the procedure according to FIG. 6c leads to the exemplary embodiment FIG. 2 ,
  • the embodiment according to the method steps according to FIG. 6b In a further embodiment, the application of a primer on the first housing 13 may be upstream, step S AG .
  • FIG. 6e in which the method steps according to FIG. 6c also precedes the process step S AG , after which a primer is applied previously.
  • the curing of the lacquer layer 43 and the lacquer seal 40 take about a time between 15 and 20 seconds.
  • the seal is then fixed.
  • the layer thickness can be applied in film thicknesses between 0.1 mm to 1 mm and cured.
  • the seal adheres to metals, other paints, phosphatings and thermosets.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (12)

  1. Procédé de revêtement d'un relais, notamment d'un relais d'un dispositif de démarrage pour des moteurs à combustion interne, dont le boîtier est au moins réalisé en deux parties et présente, entre une première partie de boîtier (13) et une deuxième partie de boîtier (16), une zone de joint (37), caractérisé en ce que l'on applique sur la zone de joint (37) une garniture à base de laque (40) non durcie, qui est durcie dans une étape supplémentaire SH au moyen d'un rayonnement ultraviolet.
  2. Procédé selon la revendication 1, caractérisé en ce que la garniture à base de laque (40) non durcie est appliquée sous forme de ruban fluide sur la zone de joint (37).
  3. Procédé selon la revendication 1, caractérise en ce que la garniture à base de laque (40) non durcie est pulvérisée sous forme fluide sur la zone de joint (37) et est de ce fait appliquée sous forme de produit pulvérisé.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le relais (10) est tourné autour de son axe longitudinal (29) pendant l'application de la garniture à base de laque (40).
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la garniture à base de laque (40) est appliquée avant le laquage à plat du boîtier.
  6. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la garniture à base de laque (40) est appliquée après le laquage à plat du boîtier.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'un positionnement précis d'une buse (46) par rapport à la zone de joint (37) est effectué par contact du relais (10) ou sans contact.
  8. Procédé selon la revendication 6, caractérisé en ce que le boîtier est muni d'une couche de fond avant le laquage à plat du boîtier.
  9. Procédé selon la revendication 6, caractérisé en ce que le durcissement s'effectue ensuite au moyen d'un rayonnement ultraviolet.
  10. Relais, en particulier relais d'un dispositif de démarrage pour des moteurs à combustion interne, caractérisé en ce que son revêtement est fabriqué selon l'une quelconque des revendications précédentes.
  11. Relais (10), en particulier relais d'un dispositif de démarrage pour des moteurs à combustion interne, comprenant un couvercle (16) et un boîtier en métal (13), avec une région (37) entre le couvercle et le boîtier en métal, caractérisé en ce que la région (37) entre le couvercle et le boîtier en métal est rendue étanche depuis l'extérieur au moyen d'une garniture (40) en laque UV non durcie.
  12. Relais selon la revendication 11, caractérisé en ce que la garniture se compose d'un ruban de laque appliqué séparément ou est pulvérisée séparément.
EP01995562A 2000-12-07 2001-12-05 Procede de revetement d'un relais, et relais fabrique selon ce procede Expired - Lifetime EP1342253B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10061121 2000-12-07
DE10061121 2000-12-07
PCT/DE2001/004529 WO2002047101A1 (fr) 2000-12-07 2001-12-05 Procede de revetement d'un relais, et relais fabrique selon ce procede

Publications (2)

Publication Number Publication Date
EP1342253A1 EP1342253A1 (fr) 2003-09-10
EP1342253B1 true EP1342253B1 (fr) 2009-08-12

Family

ID=7666317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01995562A Expired - Lifetime EP1342253B1 (fr) 2000-12-07 2001-12-05 Procede de revetement d'un relais, et relais fabrique selon ce procede

Country Status (4)

Country Link
EP (1) EP1342253B1 (fr)
DE (2) DE10195376D2 (fr)
ES (1) ES2328454T3 (fr)
WO (1) WO2002047101A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014007459A1 (de) * 2014-05-21 2015-11-26 Ellenberger & Poensgen Gmbh Leistungsrelais für ein Fahrzeug
FR3085229B1 (fr) * 2018-08-27 2021-03-05 Valeo Equip Electr Moteur Contacteur de demarreur comprenant un dispositif d'etancheite,et demarreur comprenant un tel contacteur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955327A (en) * 1956-01-20 1960-10-11 Gen Motors Corp Method for sealing electrical switches or the like
DE4332541A1 (de) * 1993-09-24 1995-03-30 Bosch Gmbh Robert Flüssigkeitsdichte Gehäuse für elektrische Komponenten und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
ES2328454T3 (es) 2009-11-13
DE50115039D1 (de) 2009-09-24
WO2002047101A1 (fr) 2002-06-13
DE10195376D2 (de) 2003-10-23
EP1342253A1 (fr) 2003-09-10

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