JP2008041656A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector capable of improving transmission quality in differential transmission. <P>SOLUTION: This connector is provided with a contact provided with a contact part connected to a mating connector and a terminal connected to a connection object, and a housing for holding the contact. The contact comprises a plurality of signal contacts and a plurality of ground contacts. The two signal contact constitute a pair. The paired signal contacts are aligned on the same column to sandwich the ground contacts therebetween at a contact part side. The signal contacts and the ground contacts are aligned separately on parallel columns at a terminal side, and the paired signal contacts 14b, 14b are opposed between the adjacent ground contacts 15b, 15b, to form a substantially trapezoidal arrangement while being cooperated each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electrical component such as a connector mounted on a connection object.

  A general connector includes a terminal side connected to a substrate and the like, and a fitting side connected to a mating connector. The connector includes a plurality of conductive contacts extending between the terminal side and the fitting side. Usually, the contacts are often arranged to have the same pitch on the terminal side and the fitting side.

  However, if the contact pitch is the same on the terminal side and the fitting side, the space may not be sufficient and the connector may be difficult to mount. As a countermeasure, contacts may be arranged in a regular staggered pattern on the terminal side.

  Various other forms of contact arrangements have been proposed (see, for example, Patent Document 1 and Patent Document 2).

Special table 2005-518067 Special table 2004-534358

  A connector may be used to transmit differential signals. In that case, the contact is divided into a positive signal terminal for the positive signal and a negative signal terminal for the negative signal, and they form a differential pair.

  Several terminal arrangements obtained in the course of the research by the inventors will be described with reference to FIGS. Reference numeral 51 denotes a connector fitting side, 52 denotes a connector terminal side, S + denotes a positive signal terminal, S- denotes a negative signal terminal, and G denotes a ground terminal.

  As shown in FIG. 1, it is conceivable to form a differential pair with signal terminals S + and S− surrounded by a broken-line ellipse on the terminal side 52. However, the transmission path is not the same cross section, and the transmission performance is inferior. Therefore, there are drawbacks in terms of transmission quality such as difficulty in impedance matching and large crosstalk.

  It is also conceivable to form a differential pair with signal terminals S + and S− surrounded by a broken-line ellipse on the terminal side 52 as shown in FIG. In this case, the differential pair has the same cross section. However, since the signal terminals S +, S− and the ground terminal G are arranged in a row on the fitting side 51, the signal terminals approach the adjacent pair of signal terminals, and crosstalk increases. In addition, pairs with different cross-sections are generated, and there is a difference in transmission characteristics. Therefore, there are drawbacks in terms of transmission quality such as difficulty in impedance matching and large crosstalk.

  It is also conceivable to form a differential pair with signal terminals S + and S− surrounded by a broken-line ellipse on the terminal side 52 as shown in FIG. In this case, all the differential pairs can have the same cross section. However, the number of ground terminals increases, and an extra space in the pitch direction is required.

  Therefore, an exemplary object of the present invention is to provide an electrical connector and an electrical component that can improve transmission quality in differential transmission.

  Another exemplary object of the present invention is to provide an electrical connector and an electrical component that can save useless core count and space.

  According to an exemplary aspect of the present invention, a connector that is mounted on an object to be connected and connected to a mating connector, the contact portion that is disposed on the contact portion side of the connector and that connects to the mating connector, and the connector Including a contact having a terminal portion disposed on a terminal side and connected to the connection object, the contact including a plurality of signal contacts and a plurality of ground contacts, and the signal contacts forming a plurality of pairs, The ground contacts are arranged with a gap between each other, and on the contact portion side, the pair of signal contacts are respectively arranged in the gap, and on the terminal portion side, the signal contact and the ground contact are arranged. It is obtained that the signal contact pairs are arranged on a flat matrix and the signal contact pairs face each other at the intervals. That.

  On the terminal portion side, the ground contacts are arranged in a first row, and the signal contacts are arranged in a second row parallel to the first row, whereby the signal contact and the ground contact are arranged in the first row. At least one trapezoidal arrangement may be formed on one side of the first row.

  On the terminal portion side, the ground contacts are arranged in a first row, and the signal contacts are parallel to the first row and second and third rows located on both sides of the first row, respectively. The signal contacts and the ground contacts may form at least two trapezoidal arrangements on both sides of the first row.

  The at least two trapezoidal arrangements may be arranged in a staggered pattern along the first row.

  You may further have the housing which hold | maintained the said contact, and the ground plate which has the ground terminal part hold | maintained by the said housing and connects with the said connection target object.

  The ground terminal portion may be disposed between the terminal portions of the ground contact.

  The contact may include a conductive lower terminal disposed on one side of the ground plate.

  The contact may further include a conductive upper terminal, and the ground plate may be disposed between the upper terminal and the lower terminal.

  According to another exemplary aspect of the present invention, the electrical component includes a plurality of ground terminals, a plurality of signal terminals, and a fixing member that fixes the terminals, and the ground terminals and the signal terminals are The center line between the two ground terminals is the same as the center line between the signal terminals forming the differential pair in the first direction in all sections or a part of the sections. A ground terminal, a signal terminal, a signal terminal, and a ground terminal are arranged in this order so as to be on a line, and in the second direction orthogonal to the first direction, the ground terminal and the signal terminal are arranged. Are divided into a plurality of rows, and the ground terminals are arranged in one row with an interval between adjacent ones, and the differential terminals of the signal terminals are arranged so as to face the intervals. The end for the ground Those forming the arrangement of the adjacent ones with the differential pair shall form a trapezoidal shape is obtained.

  In the entire section or the partial section, the trapezoidal arrangement is repeatedly obtained in the first direction, and the ground terminal is shared between adjacent ones of the trapezoidal arrangement. Also good.

  According to still another exemplary aspect of the present invention, an electrical connector including the electrical component described above is obtained.

  In the entire section or the partial section, the trapezoidal arrangement is repeatedly obtained in the first direction, and the ground terminal is shared between adjacent ones of the trapezoidal arrangement. Also good.

  According to the present invention, the ground terminals are arranged in a separate row from the signal terminals, and these are formed in a substantially trapezoidal shape. Thus, the transmission quality of differential signals can be improved, and the number of unnecessary cores and space can be saved. Furthermore, by forming the substantially trapezoidal arrangement described above in all or a part of the electrical components that transmit the differential signal, the distance between the ground terminal and the signal terminal is constant and suitable for impedance matching. Can be kept at a distance.

  With reference to FIGS. 4-8, the electrical connector as an electrical component which concerns on the 1st Embodiment of this invention is demonstrated.

  The connector shown in FIGS. 4 and 5 is a receptacle-side connector that is used by being mounted on a connection object such as a printed circuit board, and is connected to a mating connector, and includes a plurality of conductive upper terminals 11 and a plurality of conductive materials. A plurality of contacts including the lower terminal 12, a housing 2 as an insulating fixing member that holds these contacts, and a conductive shell or outer member 3 disposed on the outside of the housing 2 are included.

  The description will be continued with reference to FIG. 6 showing the disassembled state of the main part.

A conductive ground plate 13 is disposed between the upper terminal 11 and the lower terminal 12. Of course, the ground plate 13 is fixed to the housing 2. The upper terminals 11 are of the same shape arranged in a line in the first direction A1.

  Referring also to FIG. 7, the lower terminal 12 has two types of shapes. That is, the lower terminal 12 includes a plurality of signal contacts 14 and a plurality of ground contacts 15. Each signal contact 14 has a signal contact portion 14a and a signal terminal 14b. Each ground contact 15 has a ground contact portion 15a and a ground terminal 15b. The signal contact portion 14a and the ground contact portion 15a are arranged in a line in the first direction A1. The signal terminal 14b and the ground terminal 15b are separately arranged in two rows separated in a second direction A2 orthogonal to the first direction A1.

  Further, two signal contacts 14 form a pair. The signal contact portion 14a of the pair of signal contacts 14 is disposed between the two ground contacts 15 in the first direction A1. That is, on the contact portion side, the signal contact 14 pair is arranged in the same row so as to be sandwiched between the ground contacts 15. The signal contact portion 14 a of the pair of signal contacts 14 is disposed between the two ground contacts 15.

  On the other hand, the signal terminals 14 b of the pair of signal contacts 14 are arranged correspondingly between the ground terminals 15 b of the two ground contacts 15. That is, on the terminal side, a pair of signal contacts 14 face each other between adjacent ones of the ground contacts 15 in the second direction A2, and have a substantially trapezoidal shape as described in detail later, that is, a trapezoidal shape or a substantially trapezoidal shape. Form an arrangement of shapes. A plurality of substantially trapezoidal arrangements are repeatedly obtained in the first direction A1, and the ground terminal 15b is shared between adjacent ones of the substantially trapezoidal arrangements.

  The ground plate 13 extends in a predetermined distance parallel to the plane in which the ground terminals 15b and the signal terminals 14b are arranged in the housing 2. Furthermore, the ground plate 13 includes a ground terminal portion 13a that is connected to an object to be connected. The ground terminal portion 13a has an equal pitch on the same line between adjacent ground terminals 15b of the ground contact 15 in a section where the ground terminal 15b and the signal terminal 14b form a substantially trapezoidal shape. Is arranged. Thereby, the ground plate 13 can be provided without increasing the mounting area.

  FIG. 8 shows the connection positional relationship of the upper terminal 11, the signal contact 14, and the ground contact 15 with respect to the connection object. S + and S- indicate the position of the signal terminal 14b of the pair of signal contacts 14, and G indicates the position of the ground terminal 15b.

  From FIG. 8, the signal contacts 14 and the ground contacts 15 are separately arranged in two rows at the connection portion with the connection object, that is, the terminal side, and the signal contacts 14 are arranged between adjacent ones of the ground contacts 15. It will be seen that the pairs correspond to form a substantially trapezoidal arrangement. Note that the signal contact 14 and the ground contact 15 are arranged in a row in the first direction A1 on the fitting portion of the connector, that is, on the contact portion side.

  In other words, in the first direction A1, the center line between the two ground terminals 15b and the center line forming the differential pair of the signal terminals 14b are on the same line. The ground terminal 15b, the signal terminal 14b, the signal terminal 14b, and the ground terminal 15b are arranged in this order, and the array of the ground terminal 15b and the signal terminal 14b is divided into two rows in the second direction A2. Two ground terminals 15b are arranged in this column, and a differential pair of signal terminals 14b is arranged in the other column.

  With reference to FIGS. 9-12, the electrical connector as an electrical component which concerns on the 2nd Embodiment of this invention is demonstrated. Parts similar to those of the electrical connector described with reference to FIGS. 4 to 8 are denoted by the same reference numerals and description thereof is omitted.

  In this electrical connector, the ground plate 13 provided in the electrical connector of FIGS. 4 to 8 is omitted. Even in this case, the signal terminals 14 b of the pair of signal contacts 14 are disposed corresponding to the ground terminals 15 b of the two ground contacts 15. That is, on the terminal side, the pair of signal contacts 14 face each other between adjacent ground contacts 15 in the second direction A2 to form a substantially trapezoidal arrangement. A plurality of substantially trapezoidal arrangements are repeatedly obtained in the first direction A1, and the ground terminal 15b is shared between adjacent ones of the substantially trapezoidal arrangements.

  According to this electrical connector, the ground terminal 15b is shared between adjacent trapezoidal arrangements, so that the number of extra cores and the space can be increased in the entire lower section and between the pairs without increasing the space. The cross section can be the same, and the transmission quality of differential transmission can be improved.

  An electrical connector as an electrical component according to the third embodiment of the present invention will be described with reference to FIGS. Parts similar to those of the electrical connector described with reference to FIGS. 4 to 8 are denoted by the same reference numerals and description thereof is omitted.

  In this electrical connector, the outer part 3 and the upper terminal 11 provided in the electrical connector of FIGS. 9 to 12 are omitted. Even in this case, the signal terminals 14 b of the pair of signal contacts 14 are disposed corresponding to the ground terminals 15 b of the two ground contacts 15. That is, on the terminal side, the pair of signal contacts 14 face each other between adjacent ground contacts 15 in the second direction A2 to form a substantially trapezoidal arrangement. A plurality of substantially trapezoidal arrangements are repeatedly obtained in the first direction A1, and the ground terminal 15b is shared between adjacent ones of the substantially trapezoidal arrangements.

  According to this electrical connector, by sharing the ground terminal 15b between adjacent trapezoidal arrangements, the entire interval between the differential pair of the signal contacts 14 and between the pair can be obtained without increasing the number of extra cores and space. With the same cross section, the transmission quality of differential transmission can be improved.

  With reference to FIGS. 18-22, the electrical connector as an electrical component which concerns on the 4th Embodiment of this invention is demonstrated. Portions similar to those of the electrical connector described with reference to FIGS. 13 to 17 are denoted by the same reference numerals and description thereof is omitted.

  In this electrical connector, the number of each of the signal contacts 14 and the ground contacts 15 is reduced as compared with the electrical connectors of FIGS. That is, two signal contacts 14 and two ground contacts 15 are used. Even in this case, the signal terminals 14 b of the pair of signal contacts 14 are disposed corresponding to the ground terminals 15 b of the two ground contacts 15. That is, on the terminal side, the pair of signal contacts 14 oppose each other in the second direction A2 at the interval between the ground contacts 15 to form a substantially trapezoidal arrangement.

  According to this electrical connector, the differential pair of signal contacts 14 can have the same cross section in all sections, and the transmission quality of differential transmission can be improved.

  An electrical connector as an electrical component according to a fourth embodiment of the present invention will be described with reference to FIG. 23 together with FIGS. Similar parts are denoted by the same reference numerals and description thereof is omitted.

  Similar to the electrical connectors shown in FIGS. 5 and 10, the signal contacts 14 form a plurality of pairs indicated by S + and S−. The ground contacts 15 are arranged at intervals. On the contact portion side (not shown), the pair of signal contacts 14 is arranged in the space between the ground contacts 15.

  23, the signal terminal 14b of the signal contact 14 and the ground terminal 15b of the ground contact 15 are arranged separately in parallel rows. Specifically, the ground terminals 15b are arranged on the first column in the first direction A1, but the signal terminals 14b are parallel to the first column and are first in the second direction A2. The second row and the third row are arranged on both sides of each row.

  Here, the signal terminals 14b are divided into first and second groups. The first group of signal terminals 14b is arranged in the second column. The second group of signal terminals 14b is arranged in the third column. This means that the signal contact 14 having the second group of signal terminals 14b is extended in the second direction A2 as compared to the signal contact 14 having the first group of signal terminals 14b. .

  Similar to the electrical connector shown in FIGS. 5 and 10, the signal terminals 14b of the pair of signal contacts 14 are respectively opposed to the intervals between the ground terminals 15b. The signal terminal 14b and the ground terminal 15b cooperate to form at least two substantially trapezoidal arrangements.

  As shown in FIG. 23, at least two substantially trapezoidal arrangements are alternately arranged in a staggered pattern along the first row in which the ground terminals 15b are arranged. In this respect, the electrical connector of FIG. 23 is clearly different from the previously described electrical connector in which the substantially trapezoidal arrangement is arranged only on one side of the row of ground terminals 15b.

  In any of the electrical connectors described above, the ground terminals are arranged in a separate row from the signal terminals, and these are formed in a substantially trapezoidal shape. Thus, the transmission quality of the differential signal can be improved, and a useless number of cores and space can be saved. Furthermore, by forming a substantially trapezoidal arrangement in all or part of the electrical components that transmit differential signals, the distance between the ground terminal and the signal terminal is a certain distance suitable for impedance matching. Can be kept in.

  The “all sections” described in each of the electrical connectors described above indicate from end to end in the contact arrangement direction (A1). "Same section" means a section in the axial direction of the contact, which is the left-right direction in FIG. Alternatively, two ground contacts corresponding to the differential pair have the same cross-sectional shape.

It is explanatory drawing which shows an example of the terminal arrangement | sequence obtained on the way of research of this invention. It is explanatory drawing which shows the other example of the terminal arrangement | sequence obtained on the way of research of this invention. It is explanatory drawing which shows the other example of the terminal arrangement | sequence obtained on the way of research of this invention. 1 is a perspective view of an electrical connector according to a first embodiment of the present invention. It is sectional drawing of the principal part V of the electrical connector of FIG. It is a disassembled perspective view of the principal part shown in FIG. It is the perspective view which took out and showed only a part of FIG. It is explanatory drawing which shows the terminal arrangement | sequence of the electrical connector shown in FIGS. It is a perspective view of the electrical connector which concerns on the 2nd Embodiment of this invention. It is sectional drawing of the principal part X of the electrical connector of FIG. It is a disassembled perspective view of the principal part shown in FIG. It is explanatory drawing which shows the terminal arrangement | sequence of the electrical connector shown in FIGS. It is a perspective view of the electrical connector which concerns on the 3rd Embodiment of this invention. The housing of the electrical connector of FIG. 13 is shown, (a) And (b) is each a perspective view seen from a mutually different direction. It is a perspective view which shows the signal contact of the electrical connector of FIG. It is a perspective view which shows the ground contact of the electrical connector of FIG. It is explanatory drawing which shows the terminal arrangement | sequence of the electrical connector shown in FIG. It is a perspective view of the electrical connector which concerns on the 4th Embodiment of this invention. The housing of the electrical connector of FIG. 18 is shown, (a) and (b) are perspective views respectively seen from different directions. It is a perspective view which shows the signal contact of the electrical connector of FIG. It is a perspective view which shows the ground contact of the electrical connector of FIG. It is explanatory drawing which shows the terminal arrangement | sequence of the electrical connector shown in FIG. It is a figure which shows the fragmentary view for demonstrating the electrical connector which concerns on the 5th Embodiment of this invention with a terminal arrangement | sequence.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Housing as fixing member 3 Shell or outer part 11 Upper terminal 12 Lower terminal 13 Ground plate 13a Ground terminal part 14 Signal contact 14a Signal contact part 14b Signal terminal 15 Ground contact 15a Ground contact part 15b Ground terminal

Claims (12)

A connector mounted on an object to be connected and connected to a mating connector, arranged on the contact portion side of the connector and disposed on the terminal side of the connector and the contact portion connecting to the mating connector. A contact having a terminal portion to be connected,
The contact includes a plurality of signal contacts and a plurality of ground contacts, the signal contacts form a plurality of pairs, and the ground contacts are spaced apart from each other,
On the contact portion side, the signal contact pairs are respectively arranged in the interval,
The connector characterized in that, on the terminal portion side, the signal contacts and the ground contacts are separately arranged in parallel rows, and the pairs of signal contacts face each other at the interval.   On the terminal portion side, the ground contacts are arranged in a first row, and the signal contacts are arranged in a second row parallel to the first row, whereby the signal contact and the ground contact are arranged in the first row. The connector of claim 1, wherein at least one trapezoidal arrangement is formed on one side of the first row.   On the terminal portion side, the ground contacts are arranged in a first row, and the signal contacts are parallel to the first row and second and third rows located on both sides of the first row, respectively. The connector of claim 1, wherein the signal contacts and the ground contacts form at least two trapezoidal arrangements on opposite sides of the first row.   The connector according to claim 3, wherein the at least two trapezoidal arrangements are arranged in a staggered pattern along the first row.   The connector according to any one of claims 1 to 4, further comprising: a housing that holds the contact; and a ground plate that is held by the housing and has a ground terminal portion that connects to the connection object.   The connector according to claim 5, wherein the ground terminal portion is disposed between the terminal portions of the ground contact.   The connector according to claim 5, wherein the contact includes a conductive lower terminal disposed on one side of the ground plate.   The connector according to claim 7, wherein the contact further includes a conductive upper terminal, and the ground plate is disposed between the upper terminal and the lower terminal. An electrical component including a plurality of ground terminals, a plurality of signal terminals, and a fixing member that fixes these terminals,
The ground terminal and the signal terminal are fixed to the fixing member, and the center line between the two ground terminals and the signal terminal are differential with respect to the first direction in the entire section or a partial section. Arrange the ground terminal, the signal terminal, the signal terminal, and the ground terminal in this order so that the center line between the paired objects is on the same line, and with respect to the second direction orthogonal to the first direction, The array of the ground terminals and the signal terminals is divided into a plurality of rows, and the ground terminals are arranged in a row with an interval between adjacent ones to form a differential pair of the signal terminals. An electrical component characterized in that a trapezoidal arrangement is formed by the adjacent ones of the ground terminals and the ones forming the differential pair by disposing them so as to face the gap.   In the entire section or the partial section, the trapezoidal arrangement is repeatedly obtained in the first direction, and the ground terminal is shared between adjacent ones of the trapezoidal arrangement. The electrical component according to claim 9.   An electrical connector comprising the electrical component according to claim 9.   In the entire section or the partial section, the trapezoidal arrangement is repeatedly obtained in the first direction, and the ground terminal is shared between adjacent ones of the trapezoidal arrangement. The electrical connector according to claim 11.

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