JP5813449B2 - Lead frame and connector - Google Patents

Description

  The present invention relates to a connector, and more particularly to a lead frame as an intermediate member for forming a contact group of the connector.

  A differential transmission method is known in which a differential signal pair consisting of signals having opposite phases is transmitted to two signal lines forming a pair. Since the differential transmission system has a feature that the data transmission speed can be increased, it has recently been put into practical use in various fields.

  For example, when the differential transmission method is used for data transmission between the device and the liquid crystal display, the device and the liquid crystal display are provided with a display port connector designed according to the display port standard. As this display port standard, VESA Display Port standard 1.0 and its version 1.1a are known.

  This display port connector is a kind of connector for differential signals, and has a first connection side for connection to a connection partner and a second connection side for connection to a substrate of a device or a liquid crystal display. Yes. The first connection side configuration is strictly determined by the display port standard because of the relationship with the connection partner, but the second connection side configuration is relatively free. This type of differential signal connector is disclosed in Patent Document 1 and includes a housing and a contact group held in the housing.

  As shown in FIG. 8, the contact group includes three ground contacts 1 that are spaced apart from each other, and two pairs of signal contacts 2 that are arranged in pairs between the ground contacts 1. Contains. On the first connection side of the connector, one end 1a of the ground contact 1 and one end 2a of the signal contact 2 are adjacently arranged on a straight line. Further, the ground contact 1 and the signal contact 2 extend parallel to each other, and then bend at right angles in the same direction at positions shifted from each other. Thus, on the second connection side of the connector, the other end 1b of the ground contact 1 is positioned at both ends of the long side of the trapezoid, and the other end 2b of the signal contact 2 is positioned at both ends of the short side of the trapezoid. Yes. Further, in order to increase the distance between the other ends 2b of the paired signal contacts 2, both are slightly bent outward from each other in the vicinity of the other end 2b. Then, the other end 1b of the ground contact 1 and the other end 2b of the signal contact 2 are inserted into the through hole to be connected and connected to the connection target by soldering.

  According to the contact group described above, on the second connection side, the other end 1b of the ground contact 1 and the other end 2b of the signal contact 2 are arranged in different rows, and the other end 2b of the paired signal contact 2 is also provided. Since the interval is also widened, it becomes easy to connect to the connection target.

Japanese Patent No. 4439540 (Japanese Patent Laid-Open No. 2008-41656)

  The contact group disclosed in Patent Document 1 can be manufactured collectively from a metal plate. In that case, first, an intermediate part called a lead frame is manufactured by punching a metal plate. The lead frame has a plurality of leads arranged on one plane as a contact group, and a connecting portion connecting one end of these leads.

  However, in order to reduce the pitch of the contact group, the leads must be brought close to each other, so that there is a place where punching is difficult between the leads. In particular, in order to form a pair of signal contacts with a partially expanded spacing as in Patent Document 1, it is necessary to have a pair of leads for that purpose having a shape with a partially expanded spacing in advance. There is a possibility that the distance between the adjacent leads becomes extremely narrow and the punching process cannot be applied.

  Therefore, an object of the present invention is to provide a lead frame that makes it possible to easily obtain a contact group having a narrow pitch.

  Another object of the present invention is to provide a connector having a contact group with a narrow pitch using the lead frame.

According to one aspect of the present invention, there is provided a lead frame as an intermediate member for forming a contact group of a connector, and a plurality of first leads arranged on one plane and the first leads A second lead arranged in a pair, and a connecting portion connecting the first lead and the second lead on one end side, and the second lead pair has a pitch on the one end side And the first leads are separated from the second lead from the first straight portion extending from the connecting portion and the first straight portion. The first offset portion extending obliquely, the second straight portion extending in the same direction as the first straight portion from the first offset portion, and each of the first leads are the second straight line Extending diagonally from the section so as to approach the second lead A second offset portion, from said second offset portion, the lead frame is obtained, characterized in that it comprises a third linear portion extending in an extension of the first straight portion.

According to another aspect of the present invention, there is provided a connector comprising a contact pair comprising a plurality of pairs of contacts, a plurality of ground contacts, and an insulating housing that holds the contact pairs and the ground contacts. A first connection side for connecting to a counterpart, and a second connection side for connecting to a substrate, wherein the contact pair and the ground contact are on one plane on the first connection side. And the ground contact is disposed between the contact pairs. On the second connection side, the pitch of the contact pair is larger than that of the first connection side. The plurality of ground contacts are arranged in a first row so as to be spaced apart from each other in the first direction, and the first contact A second row and a third row located on both sides of the first row in a second direction orthogonal to the first direction, the two contact pairs arranged on both sides of the ground contact on the side The adjacent two of the plurality of ground contacts are extended obliquely in a direction away from the first straight line portion and the first straight line portion extended from the first connection side, respectively. A first offset portion; a second straight portion extending parallel to each other from the first offset portion; a second offset portion extending obliquely in a direction approaching each other from the second straight portion; and the second A connector having a third straight line portion extending in parallel with each other from the offset portion is obtained.

  According to the present invention, a lead frame that makes it possible to easily obtain a contact group with a narrow pitch is obtained.

  Further, according to the present invention, a connector having a contact group with a narrow pitch using the lead frame can be obtained.

The perspective view which shows the state which mounted the connector which concerns on one Embodiment of this invention in the printed circuit board. The expanded sectional view of FIG. FIG. 3 is a perspective view of a contact group included in the connector of FIGS. 1 and 2. The top view of the lead frame as an example of the intermediate member used for manufacture of the contact group of FIG. The principal part enlarged view of FIG. The top view of the lead frame as other examples of the intermediate member used for manufacture of the contact group of FIG. The principal part enlarged view of FIG. The perspective view for demonstrating the contact group currently disclosed by patent document 1 (Unexamined-Japanese-Patent No. 2008-41656).

  With reference to FIG.1 and FIG.2, the connector which concerns on embodiment of this invention is demonstrated.

  The connector 10 is a differential signal connector mounted on an end portion of a printed circuit board 11, and includes a large number of conductive upper contacts (contact group) 12, a large number of conductive lower contacts 13, and these contacts. Insulating housing 14 holding 12 and 13 and conductive connector shell 15 surrounding them are included. The printed board 11 has a notch 11a at the end. The contacts 12 and 13 are arranged in a direction perpendicular to the paper surface in FIG.

  The housing 14 includes a first portion 14 a inserted into the notch 11 a of the printed circuit board 11 and a second portion 14 b extending from the first portion 14 a along the lower surface of the printed circuit board 11. The upper contact 12 includes a terminal portion 12a that extends from the first portion 14a to the second portion 14b with a bend and is inserted into a through hole formed in the printed circuit board 11 and soldered. The lower contact 13 has a terminal portion 13a extending from the first portion 14a to the second portion 14b with a bend and soldered to the lower surface of the printed circuit board 11. Note that a mating connector (not shown) that is a connection partner is fitted into the first portion 14 a and is electrically connected to the upper contact 12 and the lower contact 13.

  Referring to FIG. 3, only the upper contacts 12 are collectively shown as a contact group. As can be seen from FIG. 3, the upper contact 12 is divided into three types depending on the position of the terminal portion 12a. That is, the terminal portions 12a are arranged in three rows. Of the upper contacts 12, the terminals 12a in the intermediate row R0 are called ground contacts. Among the upper contacts 12, the terminal portion 12a in the row R1 on one side of the intermediate row R0 is referred to as a first signal contact. Among the upper contacts 12, the terminal portion 12a in the other row R2 of the intermediate row R0 is referred to as a second signal contact. Therefore, the contact group of FIG. 3 has four ground contacts, four first signal contacts, and two second signal contacts. The ground contact is connected to the ground line of the printed circuit board 11, and the first and second signal contacts are both connected to the signal line of the printed circuit board 11.

  Thus, on the first connection side of the connector, one end of the ground contact and one end of the signal contact are arranged adjacent to each other on one plane. Further, the ground contact and the signal contact extend in parallel to each other and then bend at a right angle in the same direction at a position shifted from each other. Thus, on the second connection side of the connector, the other end (terminal portion 12a) of the ground contact is positioned at both ends of the long side of the trapezoid, and the other end (terminal portion 12a) of the signal contact is positioned at the short side of the trapezoid. It is located at both ends. Furthermore, in order to widen the distance between the other ends (terminal portions 12a) of the paired signal contacts, both are slightly bent outward from each other in the vicinity of the other end (terminal portion 12a) as will become apparent in the later sentence. Yes.

  4 and 5 show a lead frame 20 as an example of an intermediate member used for manufacturing the contact group described above.

  The lead frame 20 is made by punching a metal plate, and a plurality of first leads 21 arranged on one plane and a first arranged in pairs between the first leads 21. The second lead 22, the third lead 23, which is also disposed in a pair between the first lead 21, the first lead 21, the second lead 22, and the third lead 23 on one end side. And a connected connecting portion 24. The second lead 22 is made shorter than the first lead 21 from the connecting portion 24. The third lead 23 is made longer than the first lead 21 from the connecting portion 24. Further, each of the pair of the second leads 22 and the pair of the third leads 23 has a larger pitch P2 on the other end side, that is, on the free end side, than the pitch P1 on the one end side in advance when the metal plate is punched. As a result, the first lead 21 is approached on the free end side.

  Each of the first leads 21 is separated from the first straight portion 25 extending from the connecting portion 24 and the portion having the large pitch P2 of the paired second leads 22 from the first straight portion 25. The second lead from the first offset portion 26 extending diagonally, the first offset portion 26, the second straight portion 27 extending in the same direction as the first straight portion 25, and the second straight portion 27. 22, a second offset portion 28 that extends obliquely so as to approach 22, and a third straight portion 29 that extends from the second offset portion 28 on the extended line of the first straight portion 25.

  Each of the first leads 21 has a first planned bending portion 31 for bending in a direction intersecting the one plane on the second straight portion 27. Each of the second leads 22 is a second portion for bending in a direction crossing the one plane between the portion having the large pitch P2 and the connecting portion 24 and adjacent to the portion having the large pitch P2. A bent portion 32 is provided.

  Further, each of the first lead and the second lead has a plurality of additions between the connecting portion 24 and the first offset portion 26 and between the connecting portion 24 and the second bent portion 32. A bending portion 33 is provided.

  The lead frame 20 of FIG. 4 is provided with the first offset portion 26, so that the portion having the large pitch P2 is provided on the free end side of the paired second lead 22 despite the fact that the first offset portion 26 is provided. The distance between the first lead 21 and the second lead 22 can be made relatively large. Therefore, the lead frame 20 of FIG. 4 can be easily manufactured by press punching.

  Then, the lead frame 20 of FIG. 4 is bent by the first scheduled bending portion 31, the second bent scheduled portion 32, and the additional bent scheduled portion 33, and the connecting portion 24 is cut off. Thus, it is possible to easily obtain the contact group of FIG. 3 including the four ground contacts, the four first signal contacts, and the two second signal contacts.

  Since each of the second lead 22 pair and the third lead pair of the lead frame 20 of FIG. 4 has a larger pitch P2 on the free end side, in each of the contact group rows R1 and R2 of FIG. The distance between the terminal portions 12a is widened, and sufficient electrical insulation can be obtained between adjacent ones of the first signal contacts and adjacent ones of the second signal contacts. In addition, since the terminal portions 12a are arranged in different rows in the ground contact and the first and second signal contacts, it is possible to set the distance between the terminal portions 12a wide to obtain sufficient electrical insulation. it can. Therefore, it is possible to easily reduce the pitch of the contact group.

  Further, since the first offset portion 26 is provided obliquely extending away from the portion having the large pitch P2 of the paired second lead 22, it is paired with the second linear portion 27 following this. The distance between the second lead 22 and the portion having the large pitch P2 can be widened. Therefore, since the punching process can be easily applied, it is possible to provide the lead frame 20 that contributes to the manufacture of a narrow pitch contact group.

  In addition, since the first bending scheduled portion 31 is provided in the second straight line portion 27 (in the middle of the first offset portion 26 and the second offset portion 28), as a result, the first bending scheduled portion 31 is provided. The distance from the portion 31 to the free end, that is, the length of the terminal portion 12a in FIG. Therefore, it is possible to easily reduce the height of the connector.

  Referring to FIGS. 6 and 7, a lead frame 20 ′ as another example of an intermediate member used for manufacturing the contact group described above is shown. Parts similar to those in FIGS. 4 and 5 are denoted by the same reference numerals and description thereof is omitted.

  In the lead frame 20 ′, the first scheduled bending portion 31 is provided in the first straight portion 25. Specifically, the first scheduled bending portion 31 is provided between the first offset portion 26 and the connecting portion 24 and adjacent to the first offset portion 26. Although the position of the 2nd bending plan part 32 and the additional bending plan part 33 is provided in the position which approached the connection part 24 a little by the relationship which changed the position of the 1st bending plan part 31, essence The typical function is the same as that of the lead frame 20 shown in FIG.

  Compared with the lead frame 20 of FIG. 4, the lead frame 20 'has a slightly longer distance from the first bent portion 31 to the free end, that is, the length of the terminal portion 12a in FIG. Produces the same effects as the lead frame 20 of FIG.

  In both of the lead frames 20 and 20 ', in the case of a connector of a type arranged on a plane substantially equivalent to the printed circuit board 11 as shown in FIGS. However, the present invention can also be implemented as a connector of the type mounted on the upper surface of the printed circuit board 11 as in the cited document 1, and in the latter case, the additional bending scheduled portion 33 is unnecessary. is there.

  In addition, this invention is not limited to the said embodiment, The one part or all part can also be described like the following additional remarks, but it is not restricted to them.

(Appendix 1)
A lead frame 20 as an intermediate member for forming a contact group of a connector, which is arranged in pairs between a plurality of first leads 21 arranged on one plane and the first leads. A second lead 22; and a connecting portion 24 that connects the first lead and the second lead on one end side, and the second lead pair has the other end compared to the one end side in pitch. Each of the first leads is slanted so as to be away from the second lead of the pair from the first straight portion 25 extending from the connecting portion and the first straight portion. A lead frame comprising: a first offset portion 26 that extends, and a second straight portion 27 that extends from the first offset portion in the same direction as the first straight portion.

(Appendix 2)
Each of the first leads has a first planned bending portion 31 for bending in the direction intersecting the one plane on the second straight line portion, and each of the second leads includes the first lead The lead frame according to claim 1, further comprising: a second planned bending portion 32 for bending in a direction intersecting the one plane between the portion with the increased pitch and the connecting portion.

(Appendix 3)
Each of the first leads has a first planned bending portion 31 for bending in a direction intersecting the one plane between the first offset portion and the connecting portion, and the second lead The lead according to claim 1, wherein each of the leads has a second scheduled bending portion 32 for bending in a direction intersecting the one plane between the portion with the increased pitch and the connecting portion. flame.

(Appendix 4)
Each of the first leads includes a second offset portion 28 extending obliquely from the second linear portion so as to approach the second lead, and the first offset portion from the first offset portion. The lead frame according to any one of appendices 1 to 3, further comprising a third straight line portion 29 extending on an extension line of the straight line portion.

(Appendix 5)
Each of the first lead and the second lead includes an additional bending scheduled portion between the connecting portion and the first offset portion and between the connecting portion and the second bent scheduled portion, respectively. The lead frame according to claim 1, further comprising 33.

(Appendix 6)
A contact group using the lead frame according to any one of appendices 1 to 3 as an intermediate member, wherein the first lead and the second lead are the first bent portion and the second bent portion. A connector, wherein the connector is bent in a direction intersecting the one plane at a planned bending portion, and the connecting portion is cut off from the first lead and the second lead.

(Appendix 7)
In a connector including three ground contacts spaced apart from each other, and two pairs of signal contacts disposed in pairs between the ground contacts,
On the first connection side of the connector, one end of the ground contact and one end of the signal contact are arranged adjacent to each other on one plane,
The ground contact and the signal contact extend parallel to each other from the one end, and then bend at a right angle in the same direction at positions shifted from each other.
On the second connection side of the connector, the other end of the ground contact is located at both ends of the long side of the trapezoid, and the other end of the signal contact is located at both ends of the short side of the trapezoid.
In order to increase the distance between the other ends of the paired signal contacts, both are bent outward from each other in the vicinity of the other end,
The ground contact has one offset portion between a portion bent at a right angle and the other end.

DESCRIPTION OF SYMBOLS 1 Ground contact 1a One end of ground contact 1b The other end of ground contact 2 Signal contact 2a One end of signal contact 2b The other end of signal contact 2 10 Connector 11 Printed circuit board 11a Notch of printed circuit board 12 Upper contact (contact group)
12a Terminal portion of upper contact 13 Lower contact 13a Terminal portion of lower contact 14 Housing 14a First portion of housing 14b Second portion of housing 15 Connector shell 20, 20 'Lead frame 21 First lead 22 Second Lead 23 third lead 24 connecting portion 25 first straight portion 26 first offset portion 27 second straight portion 28 second offset portion 29 third straight portion 31 first bent portion 32 first No. 2 bending scheduled portion 33 Additional bending scheduled portion R0, R1, R2 Terminal row

Claims (5)

  A lead frame as an intermediate member for forming a contact group of a connector, wherein a plurality of first leads arranged on one plane and a second arranged in pairs between the first leads And a connecting portion that connects the first lead and the second lead on one end side, and the second lead pair has a pitch larger on the other end side than the one end side. And each of the first leads includes a first straight portion extending from the connecting portion, and a first offset portion extending obliquely from the first straight portion so as to be separated from the second lead. The first linear portion extends from the first offset portion in the same direction as the first linear portion, and each of the first leads extends from the second linear portion to the second lead. A second offset portion extending obliquely to approach, Serial lead frame and having a second offset portion, and a third linear portion extending in an extension of the first straight portion.   Each of the first leads has a first planned bending portion for bending in the direction intersecting the one plane on the second straight line portion, and each of the second leads has the pitch. 2. The lead frame according to claim 1, further comprising a second planned bending portion for bending in a direction intersecting the one plane between the enlarged portion and the connecting portion.   Each of the first leads has a first bent portion for bending in a direction intersecting the one plane between the first offset portion and the connecting portion, and the second lead 2. The lead frame according to claim 1, wherein each of the leads has a second bent portion for bending in a direction intersecting the one plane between the portion with the increased pitch and the connecting portion. .   Each of the first lead and the second lead includes an additional bending scheduled portion between the connecting portion and the first offset portion and between the connecting portion and the second bent scheduled portion, respectively. The lead frame according to claim 2, further comprising: A connector comprising a contact pair comprising a plurality of pairs of contacts, a plurality of ground contacts, and an insulating housing holding the contact pairs and the ground contacts,
A first connection side for connecting to the connection partner and a second connection side for connecting to the substrate;
On the first connection side, the contact pair and the ground contact are disposed adjacent to each other on one plane, and the ground contact is disposed between the contact pairs,
On the second connection side, the contact pair has a portion whose pitch is larger than that of the first connection side, and the first ground contact is spaced apart from each other in the first direction. And the two contact pairs arranged on both sides of the ground contact on the first connection side in both sides of the first row in a second direction orthogonal to the first direction. A first linear portion extending from the first connection side, wherein the two adjacent ground contacts are arranged in a second row and a third row located in the first row; A first offset portion extending obliquely in a direction away from the linear portion, a second linear portion extending parallel to the first offset portion, and a direction approaching each other from the second linear portion. In Connector, characterized in that it comprises a second offset portion Vita, and a third linear portion extending in parallel to each other from said second offset portion.

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