EP1357570A2 - Relaisblock - Google Patents

Relaisblock Download PDF

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Publication number
EP1357570A2
EP1357570A2 EP03290982A EP03290982A EP1357570A2 EP 1357570 A2 EP1357570 A2 EP 1357570A2 EP 03290982 A EP03290982 A EP 03290982A EP 03290982 A EP03290982 A EP 03290982A EP 1357570 A2 EP1357570 A2 EP 1357570A2
Authority
EP
European Patent Office
Prior art keywords
relay
tool
terminal housing
block
introduction
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.)
Withdrawn
Application number
EP03290982A
Other languages
English (en)
French (fr)
Other versions
EP1357570A3 (de
Inventor
Daiji c/o Sumitomo Wiring Systems Ltd. Kato
Takao c/o Nissan Motor Co. Ltd. Miho
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.)
Sumitomo Wiring Systems Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
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 Sumitomo Wiring Systems Ltd filed Critical Sumitomo Wiring Systems Ltd
Publication of EP1357570A2 publication Critical patent/EP1357570A2/de
Publication of EP1357570A3 publication Critical patent/EP1357570A3/de
Withdrawn legal-status Critical Current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
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/047—Details concerning mounting a relays
    • H01H50/048—Plug-in mounting or sockets

Definitions

  • the present invention relates to relay blocks, which are embarked on board vehicles.
  • FIG 18 shows an example of a prior-art relay block 110.
  • This relay block 110 comprises a block body 111, a relay-installation part 103 and a relay 100.
  • the relay-installation part 103 projects out of the block body 111, and the relay 100 is removably installed into this relay-installation part 103.
  • the connecting terminals 101 of the relay 100 have to be inserted by force into the corresponding receiving terminals 105 which are housed in the relay-installation part 103.
  • the receiving terminals 105 are distorted.
  • the space for the insertion of the connecting terminals 101 into the receiving terminals 105 is designed to be very small, the angularly misaligned insertion position of the connecting terminals 101 causes permanent distortion of the receiving terminals 105.
  • the space for inserting a connecting terminal 101 into its receiving terminal 105 is enlarged and consequently the contact gripping force between the receiving terminals 105 and the connecting terminals 101 is lowered.
  • a frame-shaped hood 102 is provided on the relay block 110, as shown in Figure 18.
  • This hood 102 is disposed on the external wall of the relay 100 and envelops the connecting terminals 101.
  • the hood 102 guides the relay 100 and thus, the insertion position of the connecting terminals 101 towards the terminals 105 is kept properly aligned.
  • the risks of distortion of the receiving terminals 105 of the relay-installation part 103 can be thus controlled.
  • Value Engineering is a technique aims for minimal modifications to obtain the basic functions of manufactured products or their part. From this approach, and in order to reduce at the same time the production cost of the relay 100, there is a tendency to use a relay 106, which does not comprise the hood 102. However, without the hood 102, the function of preventing distortions of the receiving terminals 105, as explained above, is lowered. Accordingly, as shown in Figure 19, it has been proposed to equip the block body 111, rather than the relay 106, with a guiding part 120. This guiding part 120 corresponds to the above-described frame-shaped hood 102.
  • This guiding part 120 comprises an opened extremity forming a relay-insertion opening 120a.
  • the relay 106 is inserted through this relay-insertion opening 120a.
  • the relay 106 is inserted while being continuously guided by the guiding part 120.
  • the insertion position of the connecting terminals 101 with respect to the receiving terminals 105 is kept properly aligned and distortions of the receiving terminals 105 are prevented.
  • relay 106 when some relays are found not to operate upon testing the relay box, these failed relays must be changed. To change such a relay 106, the latter has to be pulled out of the guiding part 120. However, the relay 106 cannot be pulled out easily because of the strong contact pressure or gripping force between the connecting terminals 101 of the relay 106 and the receiving terminals 105. Moreover, since the external peripheral surface of the relay 106 installed in the guiding part 120 is not externally apparent, it is difficult for an operator to catch or grasp it. For these reasons, the removal of a relay 106 installed in the guide portion 120 is extremely difficult.
  • cut-out parts 121 have been formed in a portion of the guiding part 120 in order to facilitate the extraction of the relay 106. Thanks to these cut-out parts 121, the external peripheral surface of the relay 106 appears partially outside and the relay 106 can be grasped more easily. However, since the contact gripping force between the connecting terminals 101 of the relay 106 and the receiving terminals 105 is extremely strong, this expedient is not sufficient to facilitate significantly the removal of the relay 106. Further, when the surface of the cut-out parts 121 provided in the guiding part 120 becomes too important, this may improve the ease for grasping the relay 106 but it also decreases the mechanical strength of the guiding part 120 and thus diminishes its insertion-guiding function for the relay 106.
  • JP-A-Hei 10-255641 a structure for removing a fuse is described in JP-A-Hei 10-255641.
  • a linear element 132 is introduced into a guiding part 131.
  • the guiding part 131 is concavely formed in the fuse-installation part 130.
  • the extremity 132a of the linear element 132 passes through the underside of the fuse 134 and is curved again along the external side of the guiding part 131. Accordingly, the fuse 134 can be removed by joining and pulling up the both ends of the linear element 132, both extremities being emerging out of the guiding part 131.
  • Utility Model JP-A-Hei 5-53106 discloses a structure comprising a junction block equipped with a fuse puller serving to facilitate fuse removal.
  • a fuse-puller installation part 140 which comprises a square frame body.
  • a sliding-die removal opening 141 is formed in the middle portion of the bottom end of this square frame body.
  • the structure corresponding to this fuse-puller installation part 140 may be considered for adaptation to replace the previously-explained guiding part.
  • the way of using the fuse puller and the relay are totally different. For example, to facilitate the removal of the fuse puller 142, most of the latter emerges out of the fuse-puller installation part 140.
  • the fuse-puller installation part 140 cannot be adapted satisfactorily as a guiding part 120 in a relay block.
  • One purpose of the present invention is to propose a relay block comprising a guiding part and a relay, where the relay can be easily removed from its guiding part.
  • a relay block comprising:
  • the tip of a tool can be introduced between the terminal housing and the relay, thus enabling the utilisation of the tool to relieve the contact pressure force (gripping force) between the second contact terminals and the first contact terminals. It is thus possible to raise the relay above the terminal housing by using a tool.
  • the relay is in this way made to project out of the relay-insertion opening while being continuously guided by the guiding part. Accordingly, the contact pressure force (gripping force) between the second contact terminals and the first contact terminals is lowered and the relay can be easily removed.
  • the relay block may also further comprise a cut-away part, which is provided in a portion of the external wall of said block body, near said tool-introduction part, in such a manner that said cut-away part reveals the sidewall of said terminal housing, said cut-away part being in communication with the end part of said tool-introduction part.
  • This cut-away part may be a step formed by cutting off the external wall of the block body in order to let the sidewall of the terminal housing appear near the tool-introduction part.
  • the tool can in all cases be introduced from several directions into the tool-introduction part through the cut-away part.
  • the relay may be larger than the end part of the terminal housing.
  • one part of the relay when the relay is installed in said terminal housing, one part of the relay is projecting out beyond the sidewall of the terminal housing.
  • the tool can be pushed against this outwardly projecting part to enlarge the space of the frontier between the terminal housing and the relay. Accordingly, the tool can be easily introduced in the frontier between the relay and the terminal housing
  • an inclined surface may be provided on the side of the end part of said terminal housing, said inclined surface being formed in order to render the width of said end part of said terminal housing gradually narrower along the direction facing said guiding part.
  • the relay block further comprises means forming a pivot and facing said tool-introduction part.
  • the relay can thus be removed very easily by applying the principle of the lever and the fulcrum.
  • means forming a pivot comprise an abutment amenable for use as a fulcrum by entering into contact with a tool introduced through said tool-introduction part, the tip of said tool being in contact with the internal end part of said relay located at the side of said guiding part.
  • a screwdriver or any other tool having the form of a long spoon can be introduced between the relay and the terminal housing while abutting against this abutment.
  • the abutment can be used as a fulcrum and the relay can be removed from the guiding part by moving the tool around the abutment, which is used as a fulcrum. It is thus possible to raise the relay above the terminal housing by applying a reduced force on the tool.
  • This abutment may be a thrust surface installed on the block body at a place facing the tool-introduction part and distant from said tool-introduction part by a determined distance.
  • the relay block further comprises introduction-limiting means, which form a space between said relay and said terminal housing when said relay is inserted in said guiding part.
  • said introduction-limiting means may comprise at least one abutment located on the end-part surface of said terminal housing.
  • the present invention also relates to a method for removing a relay out of a guiding part of a relay block according to the present invention. According to this method, a tool is introduced through said tool-introduction part into the junction between said relay and said terminal housing.
  • said tool may further be inclined against said means forming a pivot to raise said relay above said guiding part.
  • the relay block 10 equips the rear face of the instrument panel of a vehicle.
  • the relay block 10 comprises a block body 11 made of a synthetic resin and a plurality of fuses 12 installed in this block body 11.
  • Two guiding parts 20 having a square shape and made from a synthetic resin project out of the block body 11 at a position distant from the above-mentioned installation part. These guiding parts 20 are formed as an integral part of the block body 11.
  • a relay-insertion opening 21 is formed at the extreme end (upper end on the Figure) of each guiding part 20.
  • the relay 30 can be installed and removed from the relay block 11 through the relay-insertion opening 21.
  • terminal housings 13 are formed inside the block body 11 at places corresponding to the position of the guiding parts 20.
  • a plurality of female gripping-contact terminals 14 (corresponding to the first contact terminals) soldered to electrical wire 2 are housed in the terminal housings 13.
  • a plurality of terminal-insertion cavities 9 are formed on the end surface (upper surface on the Figures) of these terminal housings 13. These terminal-insertion cavities 9 rise above the gripping-contact terminals 14.
  • the connecting terminals 32 (corresponding to the second contact terminals) that equip the relay 30 are inserted through the previous cavities, and consequently the connecting terminals 32 and the above-mentioned gripping-contact terminals 14 engage each other and are thus in connection with some contact pressure.
  • the dimensions of the internal periphery of the guiding parts 20 are substantially the same as the dimensions of the external periphery of the relay 30, which is installed on the guiding part 20. Consequently, when inserting the relay 30, the side faces of the relay 30 are guided by the guiding part 20. Changes in the position of the relay 30 or clearance are thus limited and the relay 30 can be inserted in a correct and secured position. Accordingly, there is no stress (or load) in the connecting parts of the connecting terminals 32 of the relay 30 and the gripping-contact terminals 14 which are installed inside the cavities 9. Also, as a consequence, the gripping-contact terminals 14 cannot be distorted.
  • a flexible member 22a is formed in each of the two facing sidewalls 22 of the guiding part 20.
  • Each flexible member 22a has a base end and an upper end.
  • the flexible members 22a can be deflected, from their base end, towards the external side of the guiding part 20 by pressure acting against their elastic force.
  • a click-fit abutment 23, which extends inside the relay-insertion opening 21, is provided at the upper end of each of the flexible members 22a.
  • the guiding parts 20 comprise two sidewalls 24 which are not equipped with abutments 23.
  • the upper end-part of these sidewalls 24 comprises a cut-away part 25.
  • the bottom end part of each of those of the above-mentioned sidewalls 24 that is equipped with a cut-away portion 25 comprises a tool-introduction part 26.
  • the latter is the form of a square opening.
  • This tool-introduction part 26 is provided at the bottom end part of the guiding part 20, which corresponds to the proximity of the frontier or junction between the relay 30, and the terminal housing 13.
  • the dimensions of the tool-introduction part 26 are designed to be large enough to allow the introduction or insertion of the tip of a tool or rod. This tool or rod helps to remove the relay 30 (according to one embodiment, a minus driver is used).
  • the tool-introduction part_26 has a relatively simple shape, for manufacturing simplification.
  • the tool used is not limited to a minus driver.
  • the configuration may be modified, for example to suit any tool having the general shape of a long spoon with a curved, hook forming end, or equivalent.
  • the tip of the tool 5 is inserted through one of the tool-introduction parts 26 which equips the bottom end part of the two sidewalls 24.
  • the tool 5 is introduced into the junction between the relay 30 and the terminal housing 13.
  • the relay 30 is then pushed up above the border of the terminal housing 13, while being continuously guided by the guiding part 20.
  • the side surface of the relay 30 (see the upper central part of Figure 4) is slightly tapered and formed as to render the relay 30 more slender at its upper part (not shown in the Figures). This particular shape facilitates the release of the engagement between the end part (upper part) of the relay 30 and the click-fit abutment 23.
  • the elastic members 22a deflect outwardly and the relay 30 and the stoppers 23 thus end their cooperation.
  • the upper end part of the relay 30 is then caused to project out of the relay-insertion opening 21.
  • the relay 30 can be removed from the guiding part 20 by grasping or catching this outwardly projecting part.
  • the gripping force between the connecting terminals 32 and the gripping-contact terminals 14 is greatly decreased because the relay 30 is emerged from the end surface of the terminal housing 13 (upper surface on the Figures). Accordingly, the relay 30 can be easily removed just by exerting a small force. Consequently, as regards the first embodiment of the present invention, a tool 5 is used to push out the relay 30 before grasping it. The contact pressure between the connecting terminals 32 and the gripping-contact terminals 14 is relieved and thus it is possible to remove the relay 30 from the guiding part 20 easily, just a small force having to be exerted.
  • the first embodiment of the present invention can be modified as follows.
  • a tool-introduction part 26a comprising a pair of opposed corner portions can be provided at the bottom end-part of the guiding part 20.
  • two pairs of opposed corners can also be provided in the bottom end-part of the guiding part 20. In this case, all of the corners are provided with a tool-introduction part 26d.
  • a tool-introduction part 26b extending along the distance between two corners may be provided, as shown in Figure 5 (b), at the bottom end-part of the sidewalls 24 which are equipped with cut-away parts 25.
  • the tool-introduction parts 26 may also be provided in the central part of the bottom end part of the pair of sidewalls 22 equipped with the click-fit abutments 23.
  • a cut-away part 40 which is a step formed by cutting down a portion of the external wall of the block body 11, is provided near the tool-introduction part 26 of the block body 11.
  • the sidewall 13a of the terminal housing 13 emerges out as an external portion through the tool-introduction part 26 and through the cut-away part 40.
  • the tool-introduction part 26 is opened as to communicate with one end part of the cut-away part 40. Globally, it forms a concave shape.
  • the terminal housing 13 has a smaller width due to an inclined surface 41 formed at the proximity of its junction point with the relay 30. In this case, one portion of the external side of the relay 30 projects outwardly beyond the end part of the terminal housing 13.
  • the sidewall 13a of the terminal housing 13 emerges out as an external part through the cut-away part 40 formed in the block body 11.
  • the tool 5 can be introduced from a plurality of directions and thus it is possible to remove the relay 30 from the guiding part 20 without any influence of the position or orientation of the installation of the relay block 10.
  • the relay 30 projects outwardly from the end-part surface (upper surface, on the Figures) of the terminal housing 13, it is possible to push against this outwardly projecting portion with the tip of a tool 5. Further, the tip of the tool 5 is easy to introduce on the surface of the side of the terminal housing 13 of the relay 30 due to the inclined surface 41 which is formed in such a way that, at the end part of the terminal housing 13, the width of the terminal housing 13 progressively decreases according to the direction of the side of the guiding part 20. Consequently, the tip of the tool 5 can rapidly touch the surface of the relay 30 located at the side of the terminal housing 13.
  • the second embodiment of the present invention can be modified as follows.
  • the two guiding part 20 which are on the top of the block body 11 may be connected together.
  • the tool-introduction parts 26 which equipped the central portion of the bottom end part of the two guiding parts 20 are also connected together to form a single tool-introduction part 42.
  • a cut-away part 43 which is a step formed by cutting away inside the external wall of the block body 11.
  • the sidewall 13a of the terminal housing 13 may have a smaller thickness.
  • the cut away portion enables the relay 30 to project out from the end part of the terminal housing 13.
  • the surface of the relay 30 located at the side of the terminal housing 13 appears on the outside.
  • an escape groove 44 having a V-shaped cross section may be formed in the space between the housing terminal 13 and the external wall of the block body 11.
  • the tip of the tool 5 enters into contact with the face of the relay 30 located at the terminal housing side and the contact point between the tool 5 and the end part 44a of the external side of the escape groove 44 is used as a fulcrum.
  • the principle of the lever and fulcrum it is also possible to raise the relay 30 out of the guiding part 20 using a rather small force.
  • a thrust point 50 can be installed on the block body 11, at a place corresponding to the position of the tool- introduction part 26 which equips the bottom end part of the guiding part 20.
  • This thrust point 50 is provided at a determined distance from the tool-introduction part 26 and extends along the width direction of the tool-introduction part 26.
  • the tip of the tool 5 can enter into contact with the face of the relay 30 located at the side of the terminal housing 13.
  • the contact point between the tool 5 and the thrust point 50 can be used as a fulcrum and the principle of the lever and fulcrum can be used.
  • the relay 30 can be easily raised.
  • the third embodiment of the present invention can be modified as follows.
  • the thrust point 50 which equips the block body 11 may have a shape other than a pyramidal support, as depicted.
  • the shape of the thrust point 51 can be modified in order to have a conical shape with a round extremity.
  • the tip of the tool 5 can also contact the face of the relay 30 located at the side of the terminal housing 13.
  • the contact point between the tool 5 and the thrust point 51 can be used as a fulcrum and thus, the principle of the lever and fulcrum can also be used.
  • the tip of the tool 5 moves automatically since the fulcrum which support the tool 5 corresponds to the summit of the conical thrust point 51. Accordingly, the operation of raising the relay 30 is facilitated.
  • this embodiment has introduction-limiting stops 60 provided on the end surface of the terminal housing 13. These introduction-limiting stops 60 abut against the internal end surface of the relay 30 when the relay 30 is installed in the guiding part 20. In this case, the introduction-limiting stops 60 maintain the relay 30 at a position where the relay 30 does not have any contact with the terminal housing 13. For this reason, a space is formed between the relay 30 and the terminal housing 13.
  • the introduction-limiting stops 60 already maintain the relay 30 in a position where it raised upon the end face of the terminal housing 13.
  • the tip of the tool 5 contacts the end face of the relay 30 and the contact point between the tool 5 and the external wall of the block body 11 is used as a fulcrum. It is thus possible to use the principle of the lever and fulcrum. It is possible to rise up the relay 30 from the upper part of the introduction-limiting stops 60.
  • first contact terminals can be transposed to the second contact terminals.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connection Or Junction Boxes (AREA)
  • Connecting Device With Holders (AREA)
EP03290982A 2002-04-23 2003-04-22 Relaisblock Withdrawn EP1357570A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002120494 2002-04-23
JP2002120494A JP2003317594A (ja) 2002-04-23 2002-04-23 リレーブロック

Publications (2)

Publication Number Publication Date
EP1357570A2 true EP1357570A2 (de) 2003-10-29
EP1357570A3 EP1357570A3 (de) 2005-03-16

Family

ID=28786761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03290982A Withdrawn EP1357570A3 (de) 2002-04-23 2003-04-22 Relaisblock

Country Status (2)

Country Link
EP (1) EP1357570A3 (de)
JP (1) JP2003317594A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7803015B2 (en) 2008-08-12 2010-09-28 The Boeing Company Quick-mount relay apparatus and method of installation
CN101662133B (zh) * 2008-08-29 2014-11-12 矢崎总业株式会社 电接线盒
CN112782442A (zh) * 2019-11-11 2021-05-11 河南许继仪表有限公司 一种可对继电器和互感器定位的表底及使用该表底的电表
CN113257628A (zh) * 2021-06-29 2021-08-13 江西省江铜耶兹铜箔有限公司 一种用于溶铜装置的继电器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5392609B2 (ja) * 2009-06-30 2014-01-22 住友電装株式会社 電気接続箱
KR200482705Y1 (ko) * 2012-06-05 2017-02-23 엘에스산전 주식회사 전기기계식 릴레이
JP6195128B2 (ja) * 2015-07-15 2017-09-13 住友電装株式会社 電気接続箱

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2720220A1 (de) * 1977-05-05 1978-11-16 Siemens Ag Sicherungsleiste zur halterung elektrischer sicherungen
JPH04357636A (ja) * 1990-12-25 1992-12-10 Matsushita Electric Works Ltd リレーおよびソケット
JPH0935605A (ja) * 1995-07-20 1997-02-07 Yazaki Corp リレー取付構造
JPH1050404A (ja) * 1996-07-31 1998-02-20 Dai Ichi Denshi Kogyo Kk Ｐｃカード用コネクタ
EP1197397A2 (de) * 2000-10-16 2002-04-17 Sumitomo Wiring Systems, Ltd. Elektrische Kraftfahrzeugverbindungsdose

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2720220A1 (de) * 1977-05-05 1978-11-16 Siemens Ag Sicherungsleiste zur halterung elektrischer sicherungen
JPH04357636A (ja) * 1990-12-25 1992-12-10 Matsushita Electric Works Ltd リレーおよびソケット
JPH0935605A (ja) * 1995-07-20 1997-02-07 Yazaki Corp リレー取付構造
JPH1050404A (ja) * 1996-07-31 1998-02-20 Dai Ichi Denshi Kogyo Kk Ｐｃカード用コネクタ
EP1197397A2 (de) * 2000-10-16 2002-04-17 Sumitomo Wiring Systems, Ltd. Elektrische Kraftfahrzeugverbindungsdose

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0172, no. 23 (E-1359), 7 May 1993 (1993-05-07) -& JP 04 357636 A (MATSUSHITA ELECTRIC WORKS LTD), 10 December 1992 (1992-12-10) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 06, 30 June 1997 (1997-06-30) -& JP 09 035605 A (YAZAKI CORP), 7 February 1997 (1997-02-07) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06, 30 April 1998 (1998-04-30) -& JP 10 050404 A (DAI ICHI DENSHI KOGYO KK), 20 February 1998 (1998-02-20) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7803015B2 (en) 2008-08-12 2010-09-28 The Boeing Company Quick-mount relay apparatus and method of installation
GB2462524B (en) * 2008-08-12 2012-10-10 Boeing Co Quick mount relay apparatus and method of installation
CN101662133B (zh) * 2008-08-29 2014-11-12 矢崎总业株式会社 电接线盒
CN112782442A (zh) * 2019-11-11 2021-05-11 河南许继仪表有限公司 一种可对继电器和互感器定位的表底及使用该表底的电表
CN113257628A (zh) * 2021-06-29 2021-08-13 江西省江铜耶兹铜箔有限公司 一种用于溶铜装置的继电器

Also Published As

Publication number Publication date
JP2003317594A (ja) 2003-11-07
EP1357570A3 (de) 2005-03-16

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