EP1025573A1 - Procede de production d'un relais - Google Patents

Procede de production d'un relais

Info

Publication number
EP1025573A1
EP1025573A1 EP98955329A EP98955329A EP1025573A1 EP 1025573 A1 EP1025573 A1 EP 1025573A1 EP 98955329 A EP98955329 A EP 98955329A EP 98955329 A EP98955329 A EP 98955329A EP 1025573 A1 EP1025573 A1 EP 1025573A1
Authority
EP
European Patent Office
Prior art keywords
coil
contact
fixed contact
fixed
embedded
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.)
Granted
Application number
EP98955329A
Other languages
German (de)
English (en)
Other versions
EP1025573B1 (fr
Inventor
Josef Kern
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.)
TE Connectivity Solutions GmbH
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1025573A1 publication Critical patent/EP1025573A1/fr
Application granted granted Critical
Publication of EP1025573B1 publication Critical patent/EP1025573B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/042—Different parts are assembled by insertion without extra mounting facilities like screws, in an isolated mounting part, e.g. stack mounting on a coil-support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0087—Welding switch parts by use of a laser beam
    • 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
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/443—Connections to coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core

Definitions

  • the invention relates to a method for producing a relay, which has a coil body with a coil tube, two coil flanges and a winding, a core with an L-shaped yoke, an armature connected to a contact spring and a connecting pin for the contact spring and at least one first fixed contact carrier has a fixed contact.
  • a relay constructed in this way is known, for example, from US Pat. No. 4,596,972.
  • the contact spring there encloses the armature bearing in an arcuate manner and is fastened with its connecting section to the yoke, the yoke in turn forming a connecting pin molded downward.
  • the current path in the relay for connection is relatively long; the ferromagnetic yoke material is also limited in its conductivity. This has an unfavorable effect on the switching capacity of high currents if the connection pin with its relatively small cross section is also made of the same material.
  • a connecting pin formed on the yoke requires additional effort if the relay housing is to be sealed.
  • relays of similar construction which are designed for high load currents, it is also known to direct the load current from a connecting pin fastened in a base via a copper wire to the contact spring and to the contact piece fastened to it (DE 34 28 595 C2). In this way, the yoke does not need to carry the load current.
  • the use of the strand requires additional material and assembly effort.
  • the fixed contact carrier and optionally also the contact spring connecting pin are each produced as stamped parts and assembled by a plug-in process into pre-shaped shafts and openings in the coil body or a base and then fixed by a notching process or by self-pressing.
  • the aim of the present invention is a method with which a relay of the type mentioned in the introduction can be produced particularly easily and with a few parts.
  • this method should enable the use of particularly cheap semi-finished materials to be carried out in a material-saving and waste-free manner, as a result of which the relay is produced particularly economically and nevertheless with high quality.
  • this goal is achieved with the following method steps: a) the contact spring connecting pin, the at least one fixed contact carrier and the coil connecting pins are cuts of a wire semi-finished product are fed into an injection mold and fixed there; b) by injecting plastic into the injection mold, the coil body is shaped in such a way that a switching space is formed in a first coil flange, the at least one fixed contact carrier in the area of the switching space being also embedded in one of the flanges in the first coil flange and the contact spring connecting pin ; c) the wire sections are separated from their respective semi-finished products before or after the injection process; d) a fixed contact is welded or brazed onto the at least one fixed contact carrier; e) the coil body is provided with the winding, the core and the yoke such that a free yoke end forms a bearing edge for the armature; f) the plate-shaped armature is mounted on the bearing edge in such a way that the contact spring encloses the bearing point
  • the inventive use of semi-finished wire for the load circuit connections results in a particularly inexpensive and material-saving manufacture of the relay. Since the semi-finished wire product is pushed directly from the supply roll into the injection mold and embedded there, no punching or bending tools are required.
  • the coil connections used in the usual way are also overmolded in the mold in the same way.
  • the wire can be cut off either directly before the encapsulation or after the encapsulation, without any waste.
  • the relay does not have any punched parts inserted, no plastic particles are scraped off during assembly, which could be deposited on the contact surfaces or pole faces and impair the function of the relay. Due to the low tolerances of the drawn semi-finished wires with angular or round cross-section and the geometrically simple perforations in the injection mold that can be produced without any problems, spray skin or burr formation is avoided.
  • spray skin or burr formation is avoided for the positive tight fit of the straight wires in the thermoplastic injection molded part, it is useful if one or more sides of the wires are provided with knurling or notches, which can be produced inexpensively in the usual knurling roll pass.
  • the relay has only one fixed contact, which interacts with the contact spring as a make or break contact and is accordingly arranged on one or the other side of the spring end with the movable contact.
  • a changeover contact can also be generated, in which case a second fixed contact carrier is embedded in the coil former opposite the first one and provided with a fixed contact.
  • the contact spring connecting pin and the fixed contact carrier are each formed from a square wire.
  • the contact spring on the one hand and the fixed contacts on the other hand can be welded or soldered to the carrier with a large transition surface.
  • the fixed contacts themselves are preferably also separated as sections from a contact tape semi-finished product, so that no waste is produced here either.
  • the two fixed contacts are fastened on the two fixed contact carriers by means of an electrowelding or soldering device, by an inner electrode between the two Fixed contacts are arranged and two outer electrodes are placed on the two fixed contact carriers, so that the thickness of the inner electrode corresponds to the predetermined distance between the two fixed contacts.
  • the contact distance is calibrated, a hard solder layer on the fixed contacts preferably being melted during the soldering process and being more or less displaced to set the contact distance.
  • the contact spring pin is also inserted into the first coil flange, i.e. embedded in the area of the control room, and the connection section of the contact spring is fastened directly to a section of the connection pin which runs parallel to the bearing edge of the yoke.
  • the armature lies with its bearing end in this case between the yoke end and the connection pin, while the connection section of the contact spring is guided past the bearing end of the armature to the connection pin and fastened to it, preferably welded or brazed.
  • the core arranged in the coil tube preferably has a pole plate with a pole surface which is enlarged eccentrically toward the armature bearing. This means that even with small relay dimensions, on the one hand, a sufficient insulation distance from the fixed contacts and, on the other hand, a sufficiently large pole area can be generated.
  • the core can be embedded in the bobbin during manufacture, so that a subsequent plugging process is not necessary.
  • the core can have a round or a rectangular cross section. However, it is also possible to subsequently insert a round core into a through opening in the coil former.
  • the contact spring is fastened on the yoke with a fastening section enclosing the armature bearing at an angle and that a connection section folded over the fastening section is guided to the connection pin and connected to it. In this way it is ensured with a relay for high load currents that a large spring cross section is available for guiding the load current up to the connecting pin.
  • FIG. 1 shows a relay produced according to the invention in a perspective view (without housing cap)
  • FIG. 2 shows the relay from FIG. 1 in a partially assembled state (with housing)
  • FIG. 3 shows the fully assembled relay from FIG. 1 in a horizontal longitudinal section
  • FIG. 4 shows a plug-in core for the relay according to FIG. 2
  • FIG. 5 shows a vertical longitudinal section through the relay from FIG. 1 with a core according to FIG. 4
  • Figure 6 is a schematic representation of an arrangement for performing the manufacturing method according to the invention for a relay according to Figures 1 to 5 and
  • FIGS. 7 and 8 show a schematic illustration of the application of the fixed contacts in two different process stages in the relay according to FIGS. 1 to 5.
  • the relay shown in FIGS. 1 to 5 has, as the supporting part, a coil former 1 with a coil tube 11, a first flange 12 and a second flange 13.
  • the first flange 12 forms an extension into which a switch space 14 is formed, which is completed with a bottom 15 and thus defines the connection side of the relay.
  • a winding 2 is attached to the coil tube 11.
  • two fixed contact carriers 3 and 4 and a contact spring connecting pin 5 are embedded by injection molding, which are designed as semifinished products made of highly conductive material, for example copper, as square wire. Instead of the wire with a square cross section shown, one with a rectangular or round cross section could also be used.
  • the two fixed contact carriers are each provided with a fixed contact on the surfaces facing one another, namely a first fixed contact 6, which acts as a make contact, and with a second fixed contact 7, which serves as a break contact. These contacts are each cut off as contact pieces from a semi-finished product contact material band and welded to the fixed contact carriers 3 or 4 or (preferably) brazed.
  • Two further wires are arranged as coil connecting pins 9 and 10 in the second or in the first flange, diagonally offset and embedded in the same way as the load connections.
  • These coil connection pins are preferably designed with a square cross section in order to ensure a tight fit of the winding of the Reach winding ends before their material connection.
  • This connection is preferably carried out by means of a TIG welding or TIG soldering, in which a flux-free and therefore particle-free connection is achieved.
  • the coil tube 11 there is a round or rectangular soft magnetic core 16 with a one-piece molded pole plate 17, from the contour of which a segment along the line 18 is separated on one side.
  • the core end 19 opposite the pole plate 17 protrudes from the coil tube and is connected to a leg 20a of an L-shaped yoke 20. Its second leg 20b extends laterally parallel to the coil axis and forms a bearing edge 21 for an armature 22 at its end.
  • the core 16 can be embedded in it, that is to say in the coil tube 11, so that subsequent insertion is not necessary (see FIG. 3).
  • the core end 19 projecting beyond the coil former serves to center the core in the injection mold.
  • the armature has a free embossment 22b in the region below the movable contact spring end, so that an air gap 28 is formed between the contact spring 23 and the armature 22.
  • a predetermined bending point is also predetermined by side constrictions 22c. It enables the overstroke to be increased if the armature is slightly bent under the force of the coil axis.
  • the core and the yoke are connected, for example by a notch connection, in the area of the coil flange 13 in such a way that the pole face of the pole plate 17 and the yoke bearing edge 21 are aligned with one another, tolerances of the two parts are eliminated and an optimal magnetic attraction force for the armature reached .
  • the compensation of the tolerances and thus the adjustment of the overstroke is realized in such a way that the notched yoke-core unit is pushed into the coil tube in the axial direction until the overstroke of the armature reaches its setpoint.
  • the optimally aligned surfaces in the working and anchor bearing air gap do not change in their mutual assignment; only the magnet system is adapted to the position of the contact set.
  • thermoplastic coil body material Due to the additional action of forces F on opposite sides of the coil flange 12 (see FIG. 5) perpendicular to the coil axis, the relaxation of the thermoplastic coil body material can be accelerated, thus ensuring the tight fit of the core in the region of the flange 12 after the adjustment.
  • a contact spring 23 is connected to the armature 22 via a rivet point 24, which carries at its end 23a projecting above the armature a movable contact 25 which cooperates as a central contact with the two fixed contacts 6 and 7. As in the example shown, it can be designed as a riveted contact or can also be formed by two contact pieces welded or soldered to one another and separated from a precious metal strip.
  • the contact spring 23 In the area of the armature bearing, the contact spring 23 has a fastening section 23b which is shown in FIG The shape of a curl or loop is bent over the mounted armature end and is fastened flat on the yoke leg 20b by means of rivet warts 26 or by means of resistance or laser welding.
  • this fastening section 23b of the contact spring Due to its pretension, this fastening section 23b of the contact spring generates the armature restoring force.
  • the contact spring 23 has a connection section 23c which extends beyond the fastening section 23b and is folded by 180 ° over the fastening section 23b and is fastened at its end to the connecting pin 5 by welding or brazing.
  • This connection section of the spring is only used to conduct current and has no influence on the restoring force of the armature. It is provided with openings 27 in the area of the rivet warts 26 or welding spots so that it is not riveted or welded.
  • the armature 22 has a locking lug 22a which projects into a rectangular hole 23d punched in the fastening section 23b and secures the armature in the axial direction of the coil.
  • the open circuit board relay according to FIG. 1 described so far can be provided with a protective cap 29 according to FIG.
  • a bottom plate 30 can be used, which covers the coil winding space downwards.
  • the gaps between the cap 29, the base plate 30 and the coil former 1 can then be sealed by a casting compound.
  • the base plate 30, which only covers the coil space, does not cause particle abrasion, since the wire-shaped connections, namely the fixed contact carriers 3 and 4, the contact spring connection pin 5 and the coil connection pins 9 and 10, are embedded in the flanges and do not require any openings in the base plate.
  • the base plate 30 can also be integrally connected to the cap 29 by a film hinge 31.
  • FIG. 6 An injection mold 100 with two mold halves 101 and 102 has a mold cavity for the coil former 1, which is molded in the mold with the coil tube 11 and the flanges 12 and 13.
  • the fixed contact carriers 3 and 4 Before the thermoplastic material is injected into the mold, the fixed contact carriers 3 and 4, the invisible contact spring connecting pin 5 and the coil connecting pins 9 and 10 are each shown as a wire section with the length X of corresponding semifinished product wires 103, 104, 105 (not visible) ) or 109 and 110 withdrawn from corresponding supply rolls 111 and advanced into the mold.
  • the feed takes place via clamping jaws 112 and 113, which are moved in opposite directions to one another in accordance with the arrows 114 and 115 perpendicular to the longitudinal direction of the wire in order to clamp the wires and to advance in the direction of the double arrow 116 by the dimension X.
  • the wires are still held by the clamping jaws 112 and 113 during the injection molding and are only separated after the injection process.
  • the separation is carried out by a separating tool 117, which is moved together with the clamping jaws 112 and 113 in the direction of the arrow 119 and thereby shears off the wires on the outside of the molded part 102.
  • the clamping of the jaws 112 and 113 on the wires is loosened, and the jaws are moved to the right again by the dimension X in FIG. 6, in order to clamp the wires again in the positions 112 'and 113' and a new section with the length Advance X into the form.
  • the core 16 is also injected into the coil former.
  • the mold 100 has corresponding receptacles for positioning the core.
  • the cylindrical end section 19 is used for centering in the injection mold; at the other end, the pole plate 17 is suitably sealed in the injection mold.
  • the finished bobbin 1 is removed from the injection mold; the direction of mold opening is indicated by arrow 120.
  • the fixed contacts 6 and 7 are then soldered onto the fixed contact carriers 3 and 4, as shown in FIGS. 7 and 8.
  • the contact pieces (fixed contacts 6 and 7) made from a semifinished product strip for forming the normally closed and normally open counter contacts are held in recesses in an inner electrode 121, for example by negative pressure via a channel (not shown) inside the inner electrode 121
  • Fixed contacts 6 and 7 pushed between the two fixed contact carriers 3 and 4, which were injected into the coil body with the distance d in the manner described above.
  • the two fixed contacts 6 and 7 are each provided on their outside 6a and 7a with a hard solder layer (eg Silphos).
  • the width dimension dl of the inner electrode with the two fixed contacts according to FIG. 7 slightly exceeds the inner dimension d between the two fixed contact carriers 3 and 4. These fixed contact carriers are therefore somewhat widened when the inner electrode 121 is inserted with the fixed contacts. 8, two outer electrodes 122 and 123 are pressed against one another against the fixed contact carriers 3 and 4 in the arrow direction shown from the outside. With the welding current applied by a welding current source 124 between the inner electrode and the two outer electrodes, the solder layer is liquefied on the surfaces 6a and 7a of the two fixed contacts 6 and 7. So much solder is displaced that the two fixed contact carriers 3 and 4 return to their previous position with the distance d and the contact distance between the two fixed contacts assumes a predetermined dimension. In this way the calibration of the contact distance is carried out.
  • the coil is wound in the usual way, the winding ends being connected to the connecting pins 9 and 10. Since the coil connecting pins 9 and 10 are preferably square see cross section, the winding ends adhere better when winding. They are then preferably connected to the connection pins using a flux-free connection method, such as TIG welding.
  • the magnet system is completed by pressing and notching the L-shaped soft magnetic yoke 20 onto the protruding core end 19 in the region of the flange 13.
  • the armature 22 with the contact spring 23 is inserted, and the contact spring is riveted onto the yoke with its fastening section 23b or Resistance- or laser-welded and contacted with its connecting section 23c on the connecting pin 5.
  • the relay is sealed with a casting compound on the circuit board side.
  • the connection pins, namely the fixed contact carriers 3, 4, the contact spring connection pin 5 and the coil connection pins 9 and 10 do not have to be guided through this base plate 30, so that no particle abrasion occurs.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnets (AREA)
  • Manufacture Of Switches (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

Selon l'invention, dans un relais, un corps de bobine (1) est façonné par moulage par injection pour constituer un corps de base, au moins un support de contact fixe (3, 4) ainsi qu'une broche de connexion à ressort de contact (5) et des broches de connexion de bobine (9, 10) se présentant sous la forme de sections de fils métalliques sous forme de semi-finis étirés sont introduits dans le moule et recouvert ensemble de matière par injection. Le noyau (16) peut également, au choix, être intégré dans le matériau constituant le corps de bobine (1). On n'a ainsi aucun processus d'assemblage au cours duquel des particules de matière plastique peuvent être enlevées par raclage et se déposer ensuite sur les contacts. De cette façon, le montage de toutes les parties de connexion se fait au cours d'une étape économique dans le moule de moulage par injection, avec une utilisation la plus faible possible de matière, notamment grâce à l'utilisation de fils métalliques sous forme de semi-finis, séparés sans déchets.
EP98955329A 1997-10-24 1998-09-15 Procede de production d'un relais Expired - Lifetime EP1025573B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19747166 1997-10-24
DE19747166A DE19747166C1 (de) 1997-10-24 1997-10-24 Verfahren zur Herstellung eines Relais
PCT/DE1998/002729 WO1999022392A1 (fr) 1997-10-24 1998-09-15 Procede de production d'un relais

Publications (2)

Publication Number Publication Date
EP1025573A1 true EP1025573A1 (fr) 2000-08-09
EP1025573B1 EP1025573B1 (fr) 2002-04-10

Family

ID=7846594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98955329A Expired - Lifetime EP1025573B1 (fr) 1997-10-24 1998-09-15 Procede de production d'un relais

Country Status (13)

Country Link
US (1) US6266867B1 (fr)
EP (1) EP1025573B1 (fr)
JP (1) JP2001521272A (fr)
KR (1) KR100509284B1 (fr)
CN (1) CN1146935C (fr)
AR (1) AR009912A1 (fr)
AT (1) ATE216128T1 (fr)
BR (1) BR9813093A (fr)
CA (1) CA2306787C (fr)
DE (2) DE19747166C1 (fr)
ES (1) ES2173639T3 (fr)
TW (1) TW385464B (fr)
WO (1) WO1999022392A1 (fr)

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DE102011089251B4 (de) * 2011-12-20 2014-05-22 Siemens Aktiengesellschaft Auslöseeinheit zum Betätigen einer mechanischen Schalteinheit einer Vorrichtung
CN103065875B (zh) * 2012-12-29 2016-03-02 浙江汇港电器有限公司 一种超小型大电流电磁继电器
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Also Published As

Publication number Publication date
CN1277730A (zh) 2000-12-20
AR009912A1 (es) 2000-05-03
US6266867B1 (en) 2001-07-31
DE59803777D1 (de) 2002-05-16
TW385464B (en) 2000-03-21
KR100509284B1 (ko) 2005-08-22
KR20010022285A (ko) 2001-03-15
EP1025573B1 (fr) 2002-04-10
ES2173639T3 (es) 2002-10-16
WO1999022392A1 (fr) 1999-05-06
CA2306787C (fr) 2006-11-14
CN1146935C (zh) 2004-04-21
CA2306787A1 (fr) 1999-05-06
DE19747166C1 (de) 1999-06-02
ATE216128T1 (de) 2002-04-15
JP2001521272A (ja) 2001-11-06
BR9813093A (pt) 2000-08-22

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