EP0446220A1 - Electrical contact. - Google Patents

Electrical contact.

Info

Publication number
EP0446220A1
EP0446220A1 EP89912351A EP89912351A EP0446220A1 EP 0446220 A1 EP0446220 A1 EP 0446220A1 EP 89912351 A EP89912351 A EP 89912351A EP 89912351 A EP89912351 A EP 89912351A EP 0446220 A1 EP0446220 A1 EP 0446220A1
Authority
EP
European Patent Office
Prior art keywords
contact
section
cavity
crimping
electrical
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
EP89912351A
Other languages
German (de)
French (fr)
Other versions
EP0446220B1 (en
Inventor
Shoji Kikuchi
Nobuaki Onoue
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.)
Whitaker LLC
Original Assignee
AMP Inc
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 AMP Inc filed Critical AMP Inc
Publication of EP0446220A1 publication Critical patent/EP0446220A1/en
Application granted granted Critical
Publication of EP0446220B1 publication Critical patent/EP0446220B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets

Definitions

  • the present invention relates to an electrical contact for an electrical connector, more specifically to one made by stamping and forming an electrically-conductive metal plate and comprising an electrical conductor-crimping section at one end and an insulation cover-crimping section at the other end.
  • Such contact is a receptacle contact having a contact section for electrical connection with a section of a mating complementary plug contact between a conductor-crimping section and an insulation cover-crimping section at one side and also an engaging member or a lance to prevent the contact from slipping out after being inserted in an insulation housing as disclosed in the specification of Japanese Utility Patent Publication No. 4394/85.
  • This known contact provides sufficient distance between the conductor-crimping section and the insulation cover-crimping section, thereby overcoming disadvantages associated with a shorter length, i.e., possible cutting of the conductor in the wire-crimping operation and improper electrical contact with the wire conductor. In this way, the electrical connection operation is made easier and the height of the insulation housing to hold the contact is reduced.
  • the conventional engaging member or lance is made by cutting and forming outwardly the side edges of the section at the side of the insulation cover-crimping section, thereby providing resiliency of the engaging member.
  • the contact is inserted in a cavity of the insulation housing at one or upper opening end and the engaging member is pushed inwardly by the inner wall of the cavity against its resiliency.
  • a fixed step portion formed on the one side wall of the cavity releases the inward pushing so that a tip of the engaging member is engaged with the step portion, thereby providing the contact with lance means in the direction opposite to the insertion thereof.
  • the engaging member is made by forming outwardly a relatively thin metal member, and thus insufficient in strength. It may also be bent or deformed when pulled in the opposite direction with a relatively strong force, thus, it may be broken due to metal f tigue when it is frequently inserted in and extracted from the insulation housing, i.e., when the number of insertions and extractions increases. Also, since the engaging member forms a substantially V-shaped gap with the side edge of the contact, such engaging member tends to catch and scratch wires and the engaging member may be deformed, especially when handling electrical wires having a plurality of contacts connected thereto. If a shorter engaging member is used to avoid such problems, the resiliency will be ineffective for proper engagement with the fixed step portion.
  • an engaging member is formed by forming an outward projection in one side edge of a member between a conductor-crimping section and an insulation cover-crimping section of a contact-
  • a resilient lance is formed in an insulation housing for engaging such engaging member of the contact when inserted within the insulation housing.
  • the contact is made by stamping and forming an electrically conductive metal sheet and comprises a conductor-crimping section at one end, an insulation cover-crimping ' section at the other end, an electrical contact section with a complementary contact at one side between both crimping sections, a securing member at the other side between both crimping sections, and an engaging member to secure the contact within an insulation housing formed on the securing member.
  • the engaging member is formed by forming an outward projection in a part of the securing member at one side edge at the insulation cover-crimping section side of the securing member.
  • the engaging member is formed outwardly from the opposite side edge of the securing member toward the one side edge.
  • the contact as formed above, is inserted in a cavity of an insulation housing against the resiliency of a resilient lance formed as a part of a side wall of the cavity.
  • the engaging member is pressed inwardly and then overrides one end of the housing lance until it is brought into an engaged condition therewith. In this way, the contact is secured in the reverse direction to the insertion direction thereof.
  • the electrical contact section is electrically connected with a complementary mating contact secured in a separate insulation housing.
  • Fig. 1 is a perspective view of one embodiment of the contact according to this invention crimped to an electric wire;
  • Fig. 2 is a top plan view of Fig. 1;
  • Fig. 3 is a side elevational view of Fig. 1;
  • Fig. 4 is a view taken along line 4-4 of Fig. 3 showing the engaging member on the securing member;
  • Fig. 5 is a perspective view of a connector including a dielectric housing securing the contact crimped to an electric wire shown in Figs. 1 through 3 therein;
  • Fig. 6 is a cross-sectional view of the connector of Fig. 5 mated with another connector with the receptacle contact section of the former electrically connected with the pin contact section of the later.
  • receptacle contact 10 is made from an electrically-conductive metal sheet by conventional stamping and forming techniques.
  • Contact 10 formed in this manner comprises crimping section 11 for conductor core 20a of electric wire 20, crimping section 12 for insulation 20b of wire 20, electrical receptacle contact section 13 for electrical connection with pin contact section 41 (see Fig. 6) of complementary mating contact 40 described hereinafter, and securing member 14 having engaging member 15 for engagement with insulation housing 30 (see Figs. 5 and 6) described hereinafter.
  • Conductor core-crimping section 11 comprises a pair of crimping members 11a, lib extending to both sides at one end of contact 10. Both crimping members are bent inwardly to crimp conductor core 20a positioned therebetween.
  • Insulation cover-crimping section 12 comprises a pair of crimping members 12a, 12b extending to both sides at the other end of contact 10 which are crimped onto insulation cover 20b positioned between crimping members 12a, 12b by bending them inwardly.
  • Contact section 13 comprises a pair of contact members 13a, 13b extending from one side between both crimping sections 11, 12 and bent upwardly and inwardly in substantially an inverted L-shape and contact member 13c extending from one side between both contact members 13a, 13b and bent upwardly and outwardly in an inverted L-shape.
  • Securing member 14 extends from the other side between both crimping sections 11, 12 and is bent upwardly in substantially an inverted L-shape.
  • Engaging member 15 is a projection and is made by deforming outwardly a portion of one side edge 14a of member 14 facing insulation cover-crimping section 12. As shown in Fig.
  • engaging member 15 takes a form to gradually protrude from the other side edge 14b to the one side edge 14a of member 14 in an arcuate configuration. It is also arcuate along the one side edge 14a and in vertical cross section as clearly shown in Fig. 4. The engaging member 15 is therefore very large in mechanical strength and provides very smooth sliding against the inner wall surface of a cavity of the housing.
  • Engaging member 15 is preferably arcuate as mentioned above. It may not necessarily be arcuate but may be, for example, polygonal as long as it protrudes gradually from the other side edge 14b to the one side edge 14a of member 14.
  • Housing 30 is molded from a suitable dielectric material and has a plurality of cavities 31 and a plurality of resilient lances 34 made by forming open section 33a and slots 33b in a side wall 32, lances 34 constituting one side wall of each cavity.
  • Each lance 34 has a progressively-increased thickness from the upper end toward the bottom of cavity 31 and has a raised portion 35 at the inner end.
  • Housing 30 also has a cavity 36 at one side of each cavity 31.
  • Contact 10 is inserted into cavity 31 from the upper end of housing 30 while engaging member 15 slides along the inner surface of lance 34 against its resiliency to push the lance 34 outwardly.
  • engaging member 15 overrides raised portion 35, resiliency of the lance 34 allows it to return to the initial position to stop it within open section-33a. Therefore, the engagement between engaging member 15 and lance 34 will secure contact 10 in this position even if it is pulled upwardly.
  • Such electrical connector having contact 10 secured in cavity 31 may be mated with another electrical connector having a complementary contact 40 secured in insulation housing 50. The mating effects electrical engagement between pin contact section 41 of contact 40 and box-shaped contact section 13 (see Fig. 1) comprising contact members 13a, 13b, 13c by way of cavity 36 as shown in Fig. 6.
  • an engaging member is formed as a raised section at one side edge of a member positioned between the conductor and insulation cover-crimping sections.
  • the raised engaging member is immovable with respect to the member from which it is formed; thus, it is strong enough not to deform or break when the contact is pulled in the opposite direction to the insertion of the contact when it is secured in the cavity of the insulation housing.
  • the contact according to the present invention solves all the problems mentioned hereinbefore associated with the conventional contact.
  • the engaging member of the present invention is made by simply pressing outwardly a part of the member from which it is formed from the inside to the outside thereof. No additional material is needed to form such engaging member, thereby reducing the total length of the contact and making of such contact is done more easily at a lower cost.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

Raccord électrique se composant d'un logement diélectrique (30) ayant au moins une cavité (31), l'une des parois de la cavité étant munie d'une barrette élastique (34), et d'un contact électrique (10) placé dans ladite cavité (31) et comprenant aux deux extrémités une partie conductrice et une partie de sertissage isolante (11, 12) pour, respectivement, connecter par sertissage un fil électrique (20) à un conducteur (20a) et l'isoler (206). Un élément de fixation (14) et une partie de contact (13) se situent entre les parties de sertissage (11, 12) aux côtés opposés. Une partie de l'élément de fixation (14) qui se prolonge vers l'extérieur (15) s'engage avec une partie saillante (35) de la barrette élastique (34) pour maintenir le contact (10) dans la cavité (31).Electrical connection consisting of a dielectric housing (30) having at least one cavity (31), one of the walls of the cavity being provided with an elastic strip (34), and an electrical contact (10) placed in said cavity (31) and comprising at both ends a conductive part and an insulating crimping part (11, 12) for, respectively, connecting by crimping an electric wire (20) to a conductor (20a) and insulating it (206 ). A fixing element (14) and a contact part (13) are located between the crimping parts (11, 12) on opposite sides. A part of the fixing element (14) which extends outwards (15) engages with a projecting part (35) of the elastic strip (34) to maintain the contact (10) in the cavity (31 ).

Description

ELECTRICAL CONTACT
The present invention relates to an electrical contact for an electrical connector, more specifically to one made by stamping and forming an electrically-conductive metal plate and comprising an electrical conductor-crimping section at one end and an insulation cover-crimping section at the other end.
One example of such contact is a receptacle contact having a contact section for electrical connection with a section of a mating complementary plug contact between a conductor-crimping section and an insulation cover-crimping section at one side and also an engaging member or a lance to prevent the contact from slipping out after being inserted in an insulation housing as disclosed in the specification of Japanese Utility Patent Publication No. 4394/85.
This known contact provides sufficient distance between the conductor-crimping section and the insulation cover-crimping section, thereby overcoming disadvantages associated with a shorter length, i.e., possible cutting of the conductor in the wire-crimping operation and improper electrical contact with the wire conductor. In this way, the electrical connection operation is made easier and the height of the insulation housing to hold the contact is reduced.
The conventional engaging member or lance is made by cutting and forming outwardly the side edges of the section at the side of the insulation cover-crimping section, thereby providing resiliency of the engaging member. In order to maintain the contact having such an engaging member in the insulation housing, the contact is inserted in a cavity of the insulation housing at one or upper opening end and the engaging member is pushed inwardly by the inner wall of the cavity against its resiliency. Simultaneously, a fixed step portion formed on the one side wall of the cavity releases the inward pushing so that a tip of the engaging member is engaged with the step portion, thereby providing the contact with lance means in the direction opposite to the insertion thereof. However, the engaging member is made by forming outwardly a relatively thin metal member, and thus insufficient in strength. It may also be bent or deformed when pulled in the opposite direction with a relatively strong force, thus, it may be broken due to metal f tigue when it is frequently inserted in and extracted from the insulation housing, i.e., when the number of insertions and extractions increases. Also, since the engaging member forms a substantially V-shaped gap with the side edge of the contact, such engaging member tends to catch and scratch wires and the engaging member may be deformed, especially when handling electrical wires having a plurality of contacts connected thereto. If a shorter engaging member is used to avoid such problems, the resiliency will be ineffective for proper engagement with the fixed step portion.
It is, therefore, an object of this invention to overcome the aforementioned disadvantages of the conventional contact. For this end, an engaging member is formed by forming an outward projection in one side edge of a member between a conductor-crimping section and an insulation cover-crimping section of a contact-
A resilient lance is formed in an insulation housing for engaging such engaging member of the contact when inserted within the insulation housing.
In order to achieve the above object, the contact, according to the present invention, is made by stamping and forming an electrically conductive metal sheet and comprises a conductor-crimping section at one end, an insulation cover-crimping' section at the other end, an electrical contact section with a complementary contact at one side between both crimping sections, a securing member at the other side between both crimping sections, and an engaging member to secure the contact within an insulation housing formed on the securing member.
The engaging member is formed by forming an outward projection in a part of the securing member at one side edge at the insulation cover-crimping section side of the securing member.
In the preferred embodiment of the present invention, the engaging member is formed outwardly from the opposite side edge of the securing member toward the one side edge.
The contact, as formed above, is inserted in a cavity of an insulation housing against the resiliency of a resilient lance formed as a part of a side wall of the cavity. The engaging member is pressed inwardly and then overrides one end of the housing lance until it is brought into an engaged condition therewith. In this way, the contact is secured in the reverse direction to the insertion direction thereof. The electrical contact section is electrically connected with a complementary mating contact secured in a separate insulation housing.
The contact according to the present invention will be described in detail by way of example hereunder with reference to the accompanying drawings.
Fig. 1 is a perspective view of one embodiment of the contact according to this invention crimped to an electric wire;
Fig. 2 is a top plan view of Fig. 1;
Fig. 3 is a side elevational view of Fig. 1;
Fig. 4 is a view taken along line 4-4 of Fig. 3 showing the engaging member on the securing member;
Fig. 5 is a perspective view of a connector including a dielectric housing securing the contact crimped to an electric wire shown in Figs. 1 through 3 therein; and
Fig. 6 is a cross-sectional view of the connector of Fig. 5 mated with another connector with the receptacle contact section of the former electrically connected with the pin contact section of the later.
In Figs. 1 through 4, receptacle contact 10 is made from an electrically-conductive metal sheet by conventional stamping and forming techniques. Contact 10 formed in this manner comprises crimping section 11 for conductor core 20a of electric wire 20, crimping section 12 for insulation 20b of wire 20, electrical receptacle contact section 13 for electrical connection with pin contact section 41 (see Fig. 6) of complementary mating contact 40 described hereinafter, and securing member 14 having engaging member 15 for engagement with insulation housing 30 (see Figs. 5 and 6) described hereinafter.
Conductor core-crimping section 11 comprises a pair of crimping members 11a, lib extending to both sides at one end of contact 10. Both crimping members are bent inwardly to crimp conductor core 20a positioned therebetween. Insulation cover-crimping section 12 comprises a pair of crimping members 12a, 12b extending to both sides at the other end of contact 10 which are crimped onto insulation cover 20b positioned between crimping members 12a, 12b by bending them inwardly. Contact section 13 comprises a pair of contact members 13a, 13b extending from one side between both crimping sections 11, 12 and bent upwardly and inwardly in substantially an inverted L-shape and contact member 13c extending from one side between both contact members 13a, 13b and bent upwardly and outwardly in an inverted L-shape. Securing member 14 extends from the other side between both crimping sections 11, 12 and is bent upwardly in substantially an inverted L-shape. Engaging member 15 is a projection and is made by deforming outwardly a portion of one side edge 14a of member 14 facing insulation cover-crimping section 12. As shown in Fig. 2, engaging member 15 takes a form to gradually protrude from the other side edge 14b to the one side edge 14a of member 14 in an arcuate configuration. It is also arcuate along the one side edge 14a and in vertical cross section as clearly shown in Fig. 4. The engaging member 15 is therefore very large in mechanical strength and provides very smooth sliding against the inner wall surface of a cavity of the housing. Engaging member 15 is preferably arcuate as mentioned above. It may not necessarily be arcuate but may be, for example, polygonal as long as it protrudes gradually from the other side edge 14b to the one side edge 14a of member 14.
Referring now to Figs. 5 and 6, an electrical connector is shown having contact 10 secured in insulation housing 30. Housing 30 is molded from a suitable dielectric material and has a plurality of cavities 31 and a plurality of resilient lances 34 made by forming open section 33a and slots 33b in a side wall 32, lances 34 constituting one side wall of each cavity. Each lance 34 has a progressively-increased thickness from the upper end toward the bottom of cavity 31 and has a raised portion 35 at the inner end. Housing 30 also has a cavity 36 at one side of each cavity 31.
Contact 10 is inserted into cavity 31 from the upper end of housing 30 while engaging member 15 slides along the inner surface of lance 34 against its resiliency to push the lance 34 outwardly. When engaging member 15 overrides raised portion 35, resiliency of the lance 34 allows it to return to the initial position to stop it within open section-33a. Therefore, the engagement between engaging member 15 and lance 34 will secure contact 10 in this position even if it is pulled upwardly. Such electrical connector having contact 10 secured in cavity 31 may be mated with another electrical connector having a complementary contact 40 secured in insulation housing 50. The mating effects electrical engagement between pin contact section 41 of contact 40 and box-shaped contact section 13 (see Fig. 1) comprising contact members 13a, 13b, 13c by way of cavity 36 as shown in Fig. 6.
According to the contact of an electrical connector of the present invention, an engaging member is formed as a raised section at one side edge of a member positioned between the conductor and insulation cover-crimping sections. The raised engaging member is immovable with respect to the member from which it is formed; thus, it is strong enough not to deform or break when the contact is pulled in the opposite direction to the insertion of the contact when it is secured in the cavity of the insulation housing. The contact according to the present invention solves all the problems mentioned hereinbefore associated with the conventional contact. In addition, the engaging member of the present invention is made by simply pressing outwardly a part of the member from which it is formed from the inside to the outside thereof. No additional material is needed to form such engaging member, thereby reducing the total length of the contact and making of such contact is done more easily at a lower cost.

Claims

1. An electrical contact for electrical connection to an insulated electrical wire and for securing in a cavity of an insulation housing comprising an electrical conductor-crimping section (11) at one end and an insulation cover-crimping section (12) at the other end, an electrical contact section (13) to be electrically connected with a complementary contact (40) at one side between the crimping sections (11, 12), a member (14) at the other side between the crimping sections (11, 12), and an engaging member (15) on the member (14) for engagement with a section (35) of a cavity wall (34) to maintain the contact in the cavity (31) of the housing (30), characterized in that said engaging member (15) is formed in said member (14) as an outwardly-formed projection (15) in a side edge (14a) of said member (14).
2. An electrical contact as claimed in claim 1, characterized in that said engaging member (15) has an arcuate configuration.
3. An electrical contact as claimed in claim 1, characterized in that said engaging member (15) gradually protrudes from the other side edge (14b) of said member (14) to said side edge (14a) thereof.
4. An electrical connector comprising an insulation housing (30) having at least one cavity (31) and including a wall (34) provided with engaging section (35) within the cavity, an electrical contact (10) to be inserted into the cavity (31) comprises conductor and insulation-crimping sections (11, 12) at both ends of the contact for respectively crimping to a conductor (20a) and insulation (20b) of an electrical wire (20), a securing member (14) for engagement with the engaging section (35) when the contact is inserted into the cavity (31) to retain the contact in the cavity, and a contact section (13) for electrical connection with a complementary contact (40) , said securing member (14) and said contact section (13) being positioned between the crimping sections (11, 12) at opposite sides, characterized in that an engaging member (15) is formed in said securing member (14) as an outwardly-formed projection in a side edge (14a) of said member (14) for engagement with the engaging section (35). c
5. An electrical connector as claimed in claim 4, characterized in that said engaging member (15) has an arcuate configuration.
6. An electrical connector as claimed in claim 4, characterized in that said engaging member (15) gradually protrudes from the other side edge (14b) of said securing member 0 (14) to said side edge (14a) thereof.
7. An electrical connector as claimed in claim 4, characterized in that the engaging section (35) is in the form of a resilient lance (34) having a raised portion (35) at an inner end for engagement with the engaging member (15) of said securing 5 member (14).
20
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30
35
EP89912351A 1988-11-30 1989-10-30 Electrical contact Expired - Lifetime EP0446220B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1988156292U JPH0633660Y2 (en) 1988-11-30 1988-11-30 Electrical connector and contactor used therefor
JP156292/88U 1988-11-30
PCT/US1989/004793 WO1990006602A1 (en) 1988-11-30 1989-10-30 Electrical contact

Publications (2)

Publication Number Publication Date
EP0446220A1 true EP0446220A1 (en) 1991-09-18
EP0446220B1 EP0446220B1 (en) 1994-10-05

Family

ID=15624624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89912351A Expired - Lifetime EP0446220B1 (en) 1988-11-30 1989-10-30 Electrical contact

Country Status (5)

Country Link
EP (1) EP0446220B1 (en)
JP (1) JPH0633660Y2 (en)
CN (1) CN1026639C (en)
DE (1) DE68918704T2 (en)
WO (1) WO1990006602A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004046394B4 (en) * 2004-08-24 2007-03-01 Dehn + Söhne Gmbh + Co. Kg Plug-in surge protection arrangement
US7938694B2 (en) * 2007-03-29 2011-05-10 Autonetworks Technologies, Ltd. Connector terminal and connector with the connector terminal
JP4590467B2 (en) * 2008-05-23 2010-12-01 Ｓｍｋ株式会社 connector
JP6760177B2 (en) * 2017-03-30 2020-09-23 株式会社オートネットワーク技術研究所 Female terminal
EP3685471B1 (en) * 2017-09-22 2021-07-07 Harting Electric GmbH & Co. KG High-current connector comprising an insulating bush

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1465126B2 (en) * 1963-11-30 1972-01-27 AMP Inc , Harrisburg, Pa (V St A ) ELECTRIC SOCKET
JPS52134681U (en) * 1976-04-05 1977-10-13
JPS604394Y2 (en) * 1980-05-30 1985-02-07 エスエムケイ株式会社 connector
JPS601499Y2 (en) * 1980-12-03 1985-01-16 富士通株式会社 Connector contact contact structure
DE3105429A1 (en) * 1981-02-14 1982-10-28 Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal Additional lock in a connector housing for an electrical connector
JPS5972677U (en) * 1982-11-09 1984-05-17 矢崎総業株式会社 connector housing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9006602A1 *

Also Published As

Publication number Publication date
DE68918704T2 (en) 1995-02-09
DE68918704D1 (en) 1994-11-10
CN1043228A (en) 1990-06-20
JPH0276482U (en) 1990-06-12
JPH0633660Y2 (en) 1994-08-31
CN1026639C (en) 1994-11-16
WO1990006602A1 (en) 1990-06-14
EP0446220B1 (en) 1994-10-05

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