CA2017724C - Electrical connector device - Google Patents

Electrical connector device

Info

Publication number
CA2017724C
CA2017724C CA 2017724 CA2017724A CA2017724C CA 2017724 C CA2017724 C CA 2017724C CA 2017724 CA2017724 CA 2017724 CA 2017724 A CA2017724 A CA 2017724A CA 2017724 C CA2017724 C CA 2017724C
Authority
CA
Canada
Prior art keywords
base
tubular
insulating
strips
conductor
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
CA 2017724
Other languages
French (fr)
Other versions
CA2017724A1 (en
Inventor
Tsunesuke Takano
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.)
T AN T KK
Original Assignee
T AN T KK
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 T AN T KK filed Critical T AN T KK
Publication of CA2017724A1 publication Critical patent/CA2017724A1/en
Application granted granted Critical
Publication of CA2017724C publication Critical patent/CA2017724C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE
An electrical connector device has elongated narrow conductor plates provided on one side of an insulating base made of plastic, the conductor plates being bent upward so as to provide upwardly projecting conductor strips. The device also has a tubular insulating member having a bottom provided with apertures for receiving the conductor strips.
structures are provided on the insulating base and the tubular insulating member for fastening the tubular insulating member to the insulating base by a single snap fit action. The device further has a male engaging member having female connector members adapted to fit on the conductor strips. When the tubular insulating member is fixed to the insulating base, the base portions of the conductor strips are clamped between the portions of the lower surface of the bottom of the tubular insulating member around the apertures and the surface of the insulating base.

Description

2~177~
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The present invention relates to an electrical connector device and, more particularly, to an electrical connector device in which the base portions of conductor strips are bent from a narrow conductor strip (generally referred to as BUS bar) and are firmly fixed by apertures formed in the , bottom of a tubular insulating member. More specifically, the bus bar is immobilized between the bottom surface of the tubular insulating member. More specifically, the bus bar is immobilized between the bottom surface of the tubular insulating member and the surfaae of an insulating base member so as to prevent the tabs from being deformed or displaced by an external force.

Japanese Utility Model Examined Publication No. 58-10306 discloses a connector housing used with an electrical connector device generally of the type mentioned above.

, This known connector housing accommodates a plurality of female bi-polar terminals which fit at their one end on a plurality of parallel male terminals. The connector housing has a frame which opens at its upper and lower ends.
Partition walls extending perpendicularly to the longitudinal walls of the frames are provided in the ~rame so as to de1ne a plurality of terminal reaei~ing chambers. Tapered guide surfaces are formed on the lower ends of the left and right ~ side walls and the partition walls. The lower ends of the `~ 25 partition walls are positioned out of alignment with the ~ opening at the lower end of the frame.

;. In use, a separately prepared cover plate having a central bore is fastened by screws to a circuit board in such a manner that a flange radially extending from a lower .' ~

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portion of the frame is pressed by the portion of the cover i plate around the central bore, whereby the housing is fixed j to the circuit board.
~s s Thus, the known connector housing requires a separate cover plate, which makes the administration of parts ~ difficult and raised the cost of the connector. Furthermore, s fastening of the cover plate with screws is quite laborious ' particularly in a dark place or when the space is restricted.
s In addition, it is necessary to use a special tool such as a screw driver.
f In this known connector housing, it is impossible to fix the base portions of strips which are bent upward from BUS
bars by the lower surface of the housing. Namely, the , arrangement is such that the upper surface of the circuit t 15 board is pressed at a portion spaced apart from the above-mentioned base portions of the strips by the lower end of the tapered inner surface of the flange provided on the housing.
~ Therefore, the strips are liable to be deformed or displaced ,' by an external force.

The present invention provides an electrical connector device in which the base portions of strips upwardly bent from BUS bars provided on an insulating base are pressed onto the surface of the insulating base by means of strip-receiving apertures formed in the bottom of a tubular insulating member and also by the lower face of the bottom of the tubular insulating member, so as to prevent deformation or displacement of the strips, while re~ilient tabs formed on the tubular insulating member are inserted into the aperture formed in the insulating base so as to engage with the lower ` 30 edges of the aperture so that the connector can be fixed i - 2 ---s f ,. . .

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:~ without requiring a cover plate and screws, thus overcoming or at least mitigating the above-described problems of the - prior art.
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. The present invention also provides an electrical ~i 5 connector device in which the base portions of strips , upwardly bent from BUS bars provided on an insulating base are pressed onto the surface of the insulating base by means ~ of strip-receiving apertures formed in the bottom of a ;'. tubular insulating member and also by the lower fa¢e of the bottom of the tubular insulating member, so as to prevent deformation or displacement of the strips, while resilient tabs formed on the insulating base engage with retaining steps formed on the tubular insulating member so that the ~ connector can be fixed without requiring a cover plate and ~ 15 screws, thus overcoming or at least mitigating the above-:~ described problems of the prior art.

More particularly, the present invention in its first provides an electrical connector device comprising:
elongated narrow conductor plates provided on one side of an ~ 20 insulating base made of a plastic, the conductor p~ates being :~ bent upward so as to provide upwardly pro~ecting conductor strips~ a tubular insulating member having a bottom provided with apertures for receiving the conductor strips, the tubular insulating member also having resilient tabs capable of engaging with lower edges of the insulating base; and a s male engaging member having female connector members adapted to fit on the conductor strips; wherein the base portions of the conductor strips are clamped between the portions of the lower surface of the bottom of the tubular insulating member 3~ around the apertures and the surfelce of the insulating base.

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The present invention in its second aspect provides an electrical connector device comprising: elongated narrow conductor plates provided on one side of an insulating base made of a plastic, the conductor plates being bent upward so as to provide upwardly projecting conductor strips; the . insulating base having resilient tabs projecting upward therefrom; a tubular insulating member having a bottom provided with apertures for receiving the conductor strips, the tubular insulating member also having retaining steps capable of retaining the resilient tabs of the insulating base; and a male engaging member having female connector members adapted to fit on the conductor strips; wherein the base portions of the conductor strips are clamped between the portions of the lower surface of the bottom of the tubular insulating member around the apertures and the surface of the insulating base.

According to the first aspect of the present invention, the base portions of the conductor strips upwardly bent from BUS bars are strongly clamped between the upper surface of the insulating base and the lower surface of the bottom of the tubular insulating member around the apertures, as a ` result of the engagement between the resilient tabs of the tubular insulating member and the edges o the insulating ; base, so that unintentional deformation or displacement of the conductor strips is prevented despite application of an external force which is exerted when, for example, the female connector members are brought into or out of contact with the conductor strips. In addition, the tubular insulating member can be fastened by a snap fit without requiring a cover plate and a tool, by virtue of the engagement between the resilient tabs and the edges of the insulating base.

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According to the second aspect of the present invention,. the base portions of the conductor strips upwardly bent from BUS bars are strongly clamped between the upper surface of the insulating base and the lower surface of the bottom of the tubular insulating member around the apertures, as a : result of the engagement between the resilient tabs of the tubular insulating member and the edges of the insulating $ base, so that unintentional deformation or displacement of the conductor strips is prevented despite application of an external orce which is exerted when, for example, the female ' connector members are brought into or out of contact with the conductor strips. In addition, the tubular insulating member can be fastened by a snap fit without requiring a cover plate . and a tool, by virtue of the engagement between the resilient tabs on the insulating base and the retaining steps on the tubular insulating member.
i, ,~ These and other features and advantages of the present invention will become clear from the following description when the same is read in conjunction with the accompanying drawings.

FIG. lA and FIG. lB are exploded perspective views of ¢ the first and the seaond embodiments of the invention, respectively, wherein an insulating base, a tubular insulating member and a male engaging member are separated from one another.
,.
,. FIGS. 2A and 2B are vertical sectional views of the first and the second embodiments of the invention, respectively;

~ FIGS. 3A and 3B are perspective views of the first and ;~
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the second embodiments of the invention, respectively, wherein the tubular insulating member is fitted to the 'J insulating base;

:~. FIGS. 4A and 4B are vertical sectional views of the. 5 first and the second embodiments;

FIGS. 5A and 5B are vertical sectional views of the ~irst ànd the second embodiments, respectively, with the male engaging member inserted into the tubulàr in~ulating member;

FIGS. 6A and 6B are cross-sectional views taken along the lines A-A of FIGS. 5A and 5B, respectively;
' FIGS. 7A and 7B are vertical sectional views of the .. first and the second embodiments, taken at different planes from the vertical sectional views in FIGS. 4A and 4B;
s FIGS. 8A and 8B are vertical sectional views of the first and the second embodiments, taken at different planes from the vertical sectional views in FIGS. 5A and 5B;

. FIG. 9Ais a cross-sectional view of a different embodiment; FIG. 9B is a vertical seational view of the embodiment shown in FIG. 9A;

~ 20 FIGS. 10 and 11 are vertical sectional views taken along :~ the lines B-B and C-C of FIG. 9A;
.~, -~ FIG. 12 is horizontal sectional views of a different . embodiment; and ,.~
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2~17724 FIG. 13 is a vertical sectional views taken along the line D-D of FIG. 12.

A first embodiment will be described with reference to the drawings.

~ 5 Referring to FIGS. lA and 2A, the first embodiment of .i the electrical connector device of the present invention has electrical connector device of the present invention has the ¦ ollowing parts: elongated narrow metal conductor plates 2 provided by, for example, embedding on one side of an insulating base 1 made of plastic, the conductor plates 2 being bent upward at, for example, their ends so as provide upwardly pro~ecting conductor strips 3, a tubular insulating member 6 made of heat-resistant plastic such as 66 nylon having a bottom provided with apertures 4 for receiving the conductor strips 3 as shown in FIGS. 2A and 7A, the tubular . insulating member 6 sides thereof capable of engaging with, - for example, lower edges llA of an aperture llB of insulating base 1 as shown in FIGS. 3A and 4A: and a heat-resistant male engaging member 8 having female connector members 7 made of a resilient metallic sheet and adapted to fit on the conductor strips 3; wherein the base portions 3A of the conductor strips 3 are clamped between the portions of the lower surface of the bottom of the tubular insulating member 6 .~ around the apertures 4 and the surface of the insulating base 1, as shown in FIGS. 4A, 7A and 8A. In these Figures, numeral llB denotes the aperture formed in the insulating base so as to provide edges llA for retaining hooks 51A of the resilient tabs 51. Numeral 7A denotes a retaining claw for retaining the female connecting member 7 in the male engaging member 8 in a manner shown in FIG. 7A. Numeral 9 denotes lead lines which are rovered with insulating sheathes :' r , ..

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and electrically connected to the female connecting member 7 at fitting portioned to the female connecting members 7 at fitting portions 7B as shown in FIGS. 2A and 7A. Numerals 6A
and 8A denote, respectively, a projection and recess which are formed on the tubular insulating member 6 and the male engaging member in a manner shown in FIG. 3A, for the purpose of ensuring insertion of the male engaging member in correct orientation. The tubular insulating member 6 with the bottom can have a circular cross-section though it is illustrated to have a rectangular cross-section in the drawings. The male engaging member 8 also can have a cylindrical hollow structure correspondingly. In the illustrated embodiment, there are two narrow conductor tabs 3. This, however, is only illustrative and the invention can be carried out with only one conductor plate 2 and one conductor strip 3, or two, three or more conductor plates and corresponding number of conductor strips as shown in FIGS. 10 to 13.

In such cases, the number of the female connector members 7, as well as the constructions of the male engaging members 8 and the tubular insulating member 6 are suitably determined in conformity with the number of the co~ductor strips. In the arrangements shown in FIGS. 10 to 13, it is not necessary to form an aperture such as the aperture llB.
' Namely, inwardly facing hooks 51A, 51A of the resilient tabs ~ 25 51, 51 can engage with the side edges llA, llA of the base 1 3 so that the tubular insulating member can be fastened to protrude upright from the base 1. The assembly procedure is as follows.

The insulating base 1, the tubular insulating member 6 and the male engaging member 8 are first separated from one another as shown in FIGS. lA and 2A. Then, the tubular .~
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2~17724 insulating member 6 is lowered with its resilient tabs 51 sliding along the wall of the aperture llB in the insulating base 1 into engagement with the lower edges llA, as shown in FIGS. 3A and 4A. Thus, the resilient tabs 51 are deflected inwardly due to the tapered outer surfaces of the hook portions 51A, 51A thereof and, when the hooks 51A, 51A have ' passed the aperture llB, the resilient tabs 51 are released to expand outward, thus attaining a snap fit of the hook portions 51A, 51A on the lower edges llA, llA around the aperture llB in the insulatlng base 1.

It is thus possible to fasten the tubular insulating member in a single snapping action. In this state, the base portions 3A of the conductor strips 3 upwardly bent from BUS
bars 2 are strongly clamped between the upper surface of the insulating base 1 and the lower surface of the bottom of the tubular insulating member 6 around the apertures 4, as a result of the engagement between the resilient tabs 51 of the tubular insulating member 6 and the edges llA of the insulating base 1, so that unintentional deformation or displacement of the conductor strips 3 is prevented despite ~-~. application of an external force which is exerted when, for example, the female connector members 7 are brought into or out of contact with the conductor strips. It Will be seen that, in this state, the narrow conductor plates, i.e., BUS
bars 2, are electrically connected to an external circuit through the conductor strips 3 integral therewith, the female connector members 7 and the lead lines 9.
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s A second embodiment of the invention will be described with reference to the drawings.

f 30 The second embodiment of the electrical connector device .

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comprises the following parts, as shown in FIGS. lB and 2B:
elongated narrow metal conductor plates 2 provided by, for example, embedding on one side of an insulating base 1 made of plastic, the conductor plates 2 being bent upward at, for 5 example, their ends so as provide upwardly projecting conductor strips 3, the insulating base having resilient tabs 12A, 12A projecting upward therefrom; a tubular insulating member 6 having a bottom provided with apertures 4 for receiving the conductor strip0 3 as shown in FIGS. 2B and 7B, the tubular insulating member 6 also hàving retaining steps 52, 52 capable of retaining the resilient tabs 12A, 12A of the insulating base 1 as shown in FIGS. 3B and 4B: and male engaging member 8 having female connector members 7 made of resilient metal sheets and adapted to fit on the conductor strips as shown in FIGS. 5B and 6B; wherein the base portions -~ 3A of the conductor strips 3 are clamped between the portions :~ of the lower surface of the bottom of the tubular insulating . member 6 around the apertures 4 and the surface of the ~;. insulating base 1, as shown in FIGS. 4B, 7B and 8B. In these Figures, numeral 7A denotes a retaining claw for retaining the female connecting member 7 in the male engaging member 8 in a manner shown in FIG. 7B.

~` Numeral 9A denotes lead lines which are covered with ~: insulating sheathes and electrically connected to the female connecting members 7 at fitting portions 7B as shown in FIGS.
2B and 7A. Numerals 6A and 8A denote, respectively, a projection and recess which are formed on the tubular . insulating member 6 and the male engaging member in a manner ,. shown in FIG. 3B, for the purpose of ensuring insertion of -~.. 30 the male engaging member in correct orientation. The tubular ~........... insulating member 6 with the bottom can have a circular .s cross-section though it is illustrated to have a rectangular c~
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, cross-section in the drawings. The male engaging member 8 also can have a cylindrical hollow structure correspondingly.
In the illustrated embodiment, there are two narrow conductor plates 2 and, hence, two upwardly projecting conductor tabs 3~ This, however, is only illustrative and the invention can be carried out with only one conductor plate 2 and one conductor strip 3, or two, three or more conductor plates and corresponding number of conductor strips as shown in FIGS.
9B. In such cases, the number of the female connector members 7, as well as the constructions of the male engagin~
member ~ and the tubular insulating member 6 are suitably determined in conformity with the number of the conductor strips, as shown in FIG. 9B.
, -~ The assembly procedure is as follows.

, 15 ~he insulating base 1, the tubular insulating member 6 and the male engaging member 8 are first separated from one another as shown in FIGS. lB and 2B. Then, the tubular insulating member 6 is lowered towards the resilient tabs 12A, 12A from the upper side of the insulating base 1, s 20 keeping the retaining steps 52, 52 in alignment wi~h the s resilient tabs 12A, 12A. Thus, the resilient tabs 12A, 12A
,~ are deflected inwardly due to the tapered outer surfaces of the hook portions thereof and, thereafter, the resilient tabs 12A, 12A are released to expand outward, thus attaining a snap fit of the hook portions 12B, 12B of the resilient tabs 12A, 12A on the retaining steps 52, 52 on the tubular member , 6. It is thus possible to fasten the tubular insulating member 6 in a single snapping action. In this state, the base portions 3A of the conductor strips 3 upwardly bent from BUS bars 2 are strongly clamped between the upper surface of -- the insulating base 1 and the lower surface of the bottom of .

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the tubular insulating member 6 around the apertures 4, as a result of the engagement between the resilient tabs 12A, 12A
and the retaining steps 52, 52 on the tubular insulating member 6, conductor strips 3 is prevented despite application ; 5 of an external force which is exerted when, for example, the female connector members 7 are brought into or out of contact with the conductor strips. It will be seen that, in this state, the narrow conductor plates, i.e., BUS bars 2, are electriaally aonnected to an external circuit through the conduator strips 3 integral therewith, the female aonnector members 7 and the lead lines 9.

As will be understood from the foregoing description, the present invention offers the following advantages.

; In the assembly of the electrical connector device of the first embodiment, the tubular insulating member 6 is ~ lowered with its resilient tabs 51 sliding along the walls of Y the aperture llB in the insulating base 1 into engagement with the lower edges llA so that the resilient tabs 51 are deflected inwardly due to the tapered outer surfaces thereof i 20 and are then released to expand outward, thus attaining a snap fit of the hook portions 51A, 51A on the lower edges ; llA, llA of the insulating base 1, whereby the tubular insulating member 6 can be fastened to the insulating base 1 by a single snapping action. Thus, the fixing of the tubular insulating member can be conducted without requiring laborious works such as driving of screws with a screw driver and without requiring any additional part such as a cover plate. Thus, the assembly can easily be conducted even in the dark or a restricted place, thus contributing to a reduction in the cost. In addition, the base portions 3A of the conductor strips 3 upwardly bent from BUS bars 2 are -..

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., strongly clamped between the upper surface of the insulating base 1 and the lower surface of the bottom of the tubular ' insulating member 6 around the apertures 4, as a result of the engagement between the resilient tabs 51 on the tubular insulating member 6 and the edges llA of the insulating base 1, so that unintentional deformation or displacement of the conductor strips 3 is prevented despite application of an . external force which is exerted when, for example, the femaleconnector members 7 a~e brought into or out of contact w~th the conductor strips.

Referring now to the second embodiment, in the assembly of the electrical connector device, the tubular insulating . member 6 is lowered towards the resilient tabs 12A, 12A from the upper side of the insulating base 1, keeping the retaining steps 52, 52 in alignment with the resilient tabs i 12A, 12A, so that the resilient tabs 12A, 12A are deflected r, inwardly due to the tapered outer surfaces of the hook portions thereof and, thereafter, the resilient tabs 12A, 12A
are released to expand outward, thus attaining a snap fit of the hook portions 12B, 12B of the resilient tabs 12A, 12A on the retaining steps 52, 52 on the tubular member 6, whereby ' the tubular insulating member can be fastened by a single snapping action. In this state, the base portions 3A of the conductor strips 3 upwardly bent from BUS bars 2 are strongly clamped between the upper surface of the insulating base 1 and the lower surface of the bottom of the tubular insulating member 6 around the apertures 4, as a result of the engagement between the resilient tabs 12A, 12A and the retaining steps 52, 52 on the tubular insulating member 6.
Thus, the second embodiment offers the same advantages as those produced by the first embodiment.

..

Claims (5)

1. An electrical connector device comprising:

a base member made of an electrically insulating plastics material;

at least one pair of opposingly oriented elongated narrow conductor plates each having a base portion embedded within one surface of said electrically insulating base so as to be coextensive with said one base surface, each said base portion of said conductor plates terminating in an upwardly bent end portion so as to provide an upwardly projecting electrically conductive strip, wherein said conductive strips of said conductor plates are in opposed relationship to one another;

a tubular insulating member having a bottom surface provided with apertures for receiving said conductor strips, said tubular insulating member also having resilient tabs capable of engaging with lower edges of said insulating base;
and a male engaging member having female connector members adapted to fit on said conductor strips; wherein the embedded base portions of said conductor strips are forcibly clamped between said bottom surface of said tubular insulating member around said apertures and the surface of said insulating base.
2. An electrical connector device comprising:

a base member made of an electrically insulating plastics material and having resilient tabs projecting upwardly from one surface thereof;

at least one pair of opposingly oriented elongated narrow conductor plates each having a base portion embedded within said one surface of said electrically insulating base so as to be coextensive with said one base surface, each said base portion of said conductor plates terminating in an upwardly bent end portion so as to provide an upwardly projecting electrically conductive strips, wherein said conductive strips of said conductor plates are in opposed relationship to one another;

a tubular insulating member having a bottom surface provided with apertures for receiving said conductor strips, said tubular insulating member also having retaining steps capable of retaining said resilient tabs of said insulating base; and a male engaging member having female connector members adapted to fit on said conductor strips; wherein the embedded base portions of said conductor strips are forcibly clamped between said bottom surface of said tubular insulating member around said apertures and the surface of said insulating base.
3. An electrical connector device comprising:

an electrically insulative base member;

at least one electrically conductive bus bar strip embedded within one surface of said base member so as to be coextensive with said one base member surface;

said bus bar strips terminating in an upwardly bent portion thereby establishing an electrically conductive male terminal which projects upwardly from said one base surface;

an electrically insulative tubular member having a planar bottom wall which defines at least one aperture through which said upwardly projecting male terminal extends;
and coupling means for coupling said tubular member to said base member;

said embedded bus bar strips are forcibly clamped into the vicinity of said upwardly projecting male terminal between said bottom wall of said tubular member and said base member when said tubular member and said base member are coupled to one another by said coupling means to thereby minimize deformation of said male terminal.
4. An electrical connector device as in claim 3, wherein said coupling means includes a male engagement part formed on one of said tubular member and said insulating base, and a female recess adapted to receive said male engagement part formed on the other of said tubular member and said insulating base.
5. An electrical connector as in claim 3, wherein a pair of bus strips are embedded within said surface of said base member, each said bus bar strip terminating in a respective upwardly projecting male terminal extending through a respective aperture formed in the bottom wall of said tubular member.
CA 2017724 1989-05-30 1990-05-29 Electrical connector device Expired - Lifetime CA2017724C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1-63119 1989-05-30
JP1-63118 1989-05-30
JP1989063118U JP2526370Y2 (en) 1989-05-30 1989-05-30 Conductive connection device

Publications (2)

Publication Number Publication Date
CA2017724A1 CA2017724A1 (en) 1990-11-30
CA2017724C true CA2017724C (en) 1993-08-17

Family

ID=13220054

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2017724 Expired - Lifetime CA2017724C (en) 1989-05-30 1990-05-29 Electrical connector device

Country Status (2)

Country Link
JP (1) JP2526370Y2 (en)
CA (1) CA2017724C (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5846553Y2 (en) * 1979-05-08 1983-10-22 矢崎総業株式会社 Electrical connection device for wiring board
JPS58109184U (en) * 1982-01-21 1983-07-25 三菱自動車工業株式会社 Terminal guide adapter for hard printed board

Also Published As

Publication number Publication date
JPH032573U (en) 1991-01-11
JP2526370Y2 (en) 1997-02-19
CA2017724A1 (en) 1990-11-30

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