JP4542579B2 - connector - Google Patents

Description

  The present invention relates to a connector for connecting a pair of connection objects.

As prior art 1, as shown in FIG. 9, one ground contact G and two signal contacts of the mating portion (differential signal pair) S +, S- and are arranged in succession in a row In the board connection portion, a connector is known in which each ground contact G is arranged in one upper row and each signal contact S +, S− is arranged adjacent to the lower row (for example, Patent Document 1). See).

  As prior art 2, as shown in FIG. 10, one ground contact G, one signal contact S−, and one signal contact S + are sequentially arranged in a row in the fitting portion, and connected to the substrate. The connector includes a pair of signal contacts S + and S− arranged between the two ground contacts G in the upper stage, and a pair of signal contacts S + and S− arranged between the two ground contacts G in the lower stage. Are known.

Prior art 3, as shown in FIG. 11, the fitting portion, between the two ground contacts G, two signal contacts (differential signal pair) S +, S- and is continuous in a row In the board connection portion, a connector in which a pair of signal contacts S− and S + is arranged between two ground contacts G in the upper stage and a pair of signal contacts S− and S + is arranged in the lower stage is known. (For example, see Patent Document 2).

In the prior art 3, when transmitting differential signals, the signal contacts S +, the remains the same as the pitch of the connection portion of the S-, when mounting space is mounted difficult not sufficient, the board connecting portion and the transmission cable It is divided into a regular staggered arrangement at the connection part and mounted.

In the entire interval or a partial section of the electrical component for transmitting the differential signals, the sequence of connection portions of the printed circuit board of the terminal portion of the connector has become a regular terminal sequence.

JP 2007-179960 A JP 2007-214139 A

  In the prior art 1, the positional relationship (distance, etc.) of all the signal contacts S +, S− and the signal contacts S +, S− can be made the same, but the number of ground contacts G increases, and the arrangement direction is increased. There is a problem that extra space is required.

In Prior Art 2, when the signal contacts S + and S− are arranged in a line at the fitting portion, the signal contacts S + and S− approach the signal contacts S− and S + of the adjacent pair, so that the crosstalk increases. There is a problem of end.
In addition, there is a problem that a pair of signal contacts S + and S− having different positional relationships occur, and a difference in transmission characteristics also occurs.

  In Prior Art 3, the positional relationship within the signal contact S +, S− pair and between the signal contact S +, S− pair is not the same from the middle of the wiring from the fitting portion to the connection portion to the board connecting portion, and the impedance There are drawbacks in terms of transmission quality such as difficulty in matching and increased crosstalk.

Therefore, an object of the present invention is to improve the transmission quality of the differential transmission, eliminating unnecessary number of cores and the space, further is to provide a connector capable of obtaining a reduction in crosstalk.

  The present invention provides a connector comprising a contact having a contact portion connected to a mating connector, a terminal portion connected to a connection object, and a housing holding the contact, wherein the contact includes a plurality of signal contacts. And a pair of the adjacent signal contacts and one ground contact constitute one group, and the contact portion is arranged in the arrangement direction. In this order, the ground contacts and the signal contacts of the pair are sequentially arranged at equal intervals in one row, the terminal portions are arranged in three rows, and the ground contacts are arranged in the central second row in the arrangement direction. One of the signal contacts of the pair is arranged in the arrangement direction in the first row on the contact portion side. And the other of the signal contacts of the pair is arranged in the arrangement direction in the third row on the outer side, and the signal contacts of the pair are arranged between the two ground contacts in the arrangement direction, One of the terminal portions and the other terminal portion of the pair of signal contacts is a connector that is displaced with respect to the contact portion in the arrangement direction.

According to the connector of the present invention, in the entire interval or a part of the section of the electrical component for transmitting the differential signal, and arranged to each of the ground contacts and the signal contacts in three rows, the distance between the ground contact and the signal contact by but be arranged to maintain a constant distance appropriate for impedance matching, in between pairs of the pair within and signal contacts of the signal contact, the distance a positional relationship such that the same, the transmission quality of the differential transmission Can be improved.

  Further, according to the connector of the present invention, there is an advantage that it is possible to save useless number of cores and space, and to further reduce the distance between the pair of signal contacts and reduce crosstalk.

  The connector of the present invention is a connector comprising a contact having a contact portion connected to a mating connector, a terminal portion connected to an object to be connected, and a housing holding the contact, wherein the contact includes a plurality of contacts. The signal contact and a plurality of ground contacts, and the two pairs of adjacent signal contacts and one ground contact constitute a group, and the contact portion includes: In the arrangement direction, the ground contacts and the signal contacts of the pair are sequentially arranged at equal intervals in one row, the terminal portions are arranged in three rows, and the ground contacts are arranged in the second row at the center. Arranged in the arrangement direction, and one of the signal contacts of the pair is arranged in the first row on the contact portion side. And the other of the pair of signal contacts is arranged in the arrangement direction in the third row on the outer side, and in the arrangement direction, the signal contacts of the pair are arranged between two ground contacts. The one terminal portion and the other terminal portion of the paired signal contacts are arranged so as to be shifted with respect to the contact portion in the arrangement direction.

1 to 4 show a first embodiment of a connector according to the present invention.
The connector according to the first embodiment is a receptacle connector that is connected to a mating connector (plug connector) when mounted on a printed wiring board (hereinafter simply referred to as a board) as a connection object.

  Referring to FIGS. 1 to 4, the upper contacts 3 are arranged in parallel at intervals in a first direction X (see FIGS. 1 and 3) in which a plurality of connectors are arranged. A plurality of lower contacts 11 arranged in parallel with each other in the first direction X, an insulating housing 31 holding each of the upper and lower contacts 3, 11, And a shell 41 attached to the housing 31 so as to cover the outer surface.

  The upper contact 3 includes a holding portion 4, a contact portion 5 extending from one side end of the holding portion 4, and a terminal portion 6 extending from the other side end of the holding portion 4.

The holding part 4 is held in a contact accommodating part 32 formed in the housing 31.
The contact portion 5 is located at a fitting portion 33 formed on the front surface 31 a of the housing 31.

A contact portion 5 a that is bent in an arc shape is formed at the free end of the contact portion 5.
The contact portion 5 a is a portion that comes into contact with a mating contact provided on a mating connector (not shown) fitted to the fitting portion 33 of the housing 31.

The terminal portion 6 is a portion that is further bent at a substantially right angle so as to be bent at a substantially right angle from the holding portion 4 and to extend to the rear surface 31 b of the housing 31 on the opposite side of the fitting portion 33.
As is apparent from FIGS. 3 and 4, the holding portion 4 and the terminal portion 6 are bent into a substantially crank shape when viewed from the side.
The terminal portion 6 is connected to a conductor pattern (conductive portion) provided on the substrate 51 by solder when the connector is mounted on the substrate 51.

  As shown in FIGS. 5A, 5B, and 5C, the lower contact 11 includes a plurality of signal contacts 11S (S +), a plurality of signal contacts 11S (S−), and And a plurality of ground contacts 11G.

  The signal contact 11S (S +, S-) includes a holding portion 14S, a contact portion 15S extending from one end of the holding portion 14S, and a terminal portion 16S extending from the other end of the holding portion 14S. And have.

The holding portion 14 </ b> S is held by the contact accommodating portion 32 of the housing 31.
The contact portion 15 </ b> S is located at the fitting portion 33 of the housing 31.
The terminal portion 16 </ b> S is a portion that is bent from the holding portion 14 </ b> S to the bottom surface 31 d that faces the substrate 51 and extends outward from the bottom surface 31 d of the housing 31.

A contact portion 15a that is bent in an arc shape is formed at the free end of the contact portion 15S.
The contact portion 15 a comes into contact with a mating contact provided on the mating connector fitted to the fitting portion 33 of the housing 31.
The terminal portion 16S is inserted into a through hole 51a formed in the substrate 51 when the connector is mounted on the substrate 51, and is connected to the conductor pattern (conductive portion) by solder on the back surface of the substrate 51.

  The ground contact 11G of the lower contact 11 includes a ground holding portion 14G, a ground contact portion 15G extending from one end of the ground holding portion 14G, and a ground extending from the other end of the holding portion 14G. Terminal portion 16G.

The ground holding portion 14 </ b> G is held in the contact accommodating portion 32 of the housing 31.
The ground contact portion 15 </ b> G is located at the fitting portion 33 of the housing 31.
The ground terminal portion 16G is a portion that is bent at a substantially right angle from the ground holding portion 14G to the bottom surface 31d facing the substrate 51 and extends outward from the bottom surface 31d of the housing 31.

A ground contact portion 15g bent in an arc shape is formed at the free end of the ground contact portion 15G.
The ground contact portion 15 g contacts a mating ground contact provided on the mating connector inserted into the fitting portion 33 of the housing 31.

  When the connector is mounted on the substrate 51, the ground terminal portion 16G is inserted into the through hole 51a formed in the substrate 51 and connected to the conductor pattern (conductive portion) by soldering on the back surface of the substrate 51.

The shell 41 is made of a metal plate and is attached to the housing 31.
The shell 41 has a shell main body portion 41d that covers the outer peripheral surface excluding the opening portion of the fitting portion 33 of the housing 31 for fitting the mating fitting portion of the counterpart connector and the bottom surface 31d.

Further, the shell 41 is formed with a shell fitting portion 41 b that is formed in a cylindrical shape so as to cover the outer peripheral portion of the fitting portion 33 of the housing 31.
A plurality of leg portions 43 a and 43 b are extended from the lower end of the shell main body portion 41 d covering the pair of side surfaces 31 f of the housing 31 and the rear surface 31 b of the housing 31.
The legs 41 a and 43 b are inserted into the insertion holes 51 b and 51 c formed in the substrate 51, so that the shell 41 is fixed to the substrate 51.

  Therefore, when the shell 41 is fixed to the substrate 51, the housing 31 and the shell 41 are held together, so that the connector is fixed to the substrate 51.

The upper contact 3 in this connector is a signal contact for transmitting and receiving general low-speed signals.
Lower signal contacts 11S is for transmitting a differential signal that requires high-speed transmission.

Hereinafter, the arrangement and combination of the lower signal contact 11S and the ground contact 11G will be described in detail with reference to FIGS.
6 and 8 show a state in which the housing 31 is viewed from the bottom surface 31d.

Referring to FIGS. 6 to 8 as well, a pair of two adjacent signal contacts 11S (S +) and signal contacts 11S (S−) and one ground contact 11G constitute one group. is doing.
In this group, a plurality of groups are arranged in order in the first direction X.

  As shown in FIG. 6, the signal contact 11S (S +, S−) and the ground contact 11G have three first axes X1, second axes X2, and third axes X3 that are parallel to the first direction X. Are arranged on the basis of each of the above.

Further, the signal contact 11S (S +, S-) and the ground contact 11G are virtual planes including the first to third axes X1, X2, and X3 in FIG. It arrange | positions on the basis of several 4th axis line Y1 orthogonal to each of X3.
The plurality of fourth axes Y1 are axes parallel to the second direction Y.

  The contact portion 15S of the signal contact 11S (S +, S−) and the ground contact portion 15G of the ground contact 11G are disposed on the fourth axis Y1 parallel to the second direction Y, and in the first direction X. They are arranged at equal intervals in the arrangement direction.

  That is, the contact portion 15S of the signal contact 11S (S +, S−) and the ground contact portion 15G of the ground contact 11G are connected to the ground contact 11G, the signal contact 11S (S +), and the signal contact (S−) in the first direction X. They are sequentially arranged in a line at regular intervals.

The terminal portions 16S of the signal contacts 11S (S +, S-) and the ground terminal portions 16G of the ground contacts 11G are arranged in three rows in the second direction Y.
The ground contact 11G is arranged in the arrangement direction of the second axis X2 in the second row in the center among the three rows.
One signal contact 11S (S +) of the pair of signal contacts 11S (S +, S−) is in the arrangement direction of the first axis X1 in the first column on the contact portion 15S side of the one signal contact 11S (S +). Has been placed.
The other signal contact 11S (S−) of the pair of signal contacts 11S (S +, S−) is arranged in the arrangement direction of the third axis X3 in the third column on the outside.

The signal contacts 11S (S +) in the first column are disposed at equal intervals on the first axis X1.
The grounds 11G in the second row are arranged at equal intervals on the second axis X2.
The signal contacts 11S (S−) in the third column are disposed at equal intervals on the third axis X3.

  The ground contact portion 15G and the ground terminal portion 16G of the ground contact 11G are arranged on the fourth axis Y1, and are arranged at equal intervals in the arrangement direction of the first direction X.

  Furthermore, in the first direction X, which is the arrangement direction of the lower contact 11S and the ground contact 11G, the distance between the ground contact portion 15G of the ground contact 11G and the contact portion 15S of the signal contact 11S and the pair of signal contacts 11S. The (S +, S-) terminal portions 16S are arranged at different intervals.

That is, the terminal portions 16S (S +) of the signal contacts 11S are separated from the fourth axis Y1 in the first direction X by the eccentric portions 17S and 17S 'provided in the pair of signal contacts 11S (S +, S-), respectively. The terminal portion 16S (S−) of the signal contact 11S is displaced in the XA direction of the first direction X from the fourth axis Y1. They are arranged on the axis Y2.
In other words, as shown in FIGS. 5 to 8, eccentric portions 17S and 17S ′ provided between the terminal portion 16S and the contact portion 15S of the pair of signal contacts 11S (S +, S−), that is, bent By the portions 17S and 17S ′, the terminal portion 16S (S +) of the signal contact 11S bends in the direction away from the ground terminal portion 16G of the adjacent ground contact 11G and in the direction approaching the contact portion 15S side, and the signal contact 11S The terminal portion 16S (S−) is bent in a direction away from the ground terminal portion 16G of the adjacent ground contact 11G and away from the contact portion 15S side.
The fifth axis Y2 is an axis that is parallel to the second direction Y.

  As can be seen from FIG. 6, the adjacent terminal portions 16S (S +) and 16S (S−) of the signal contact 11S in the first direction X are adjacent to the adjacent contact portion 15S (S +) of the signal contact 11S and the signal contact 11S. It is located between the contact portions 15S (S-).

  As described above, the terminal portion 16S (S + of the signal contact 11S on the first axis X1 in the first column is between the two terminal portions 16G of the ground contact 11G on the second axis X2 in the second column. ) And one of the terminal portions 16S (S−) of the signal contact 11S on the third axis X3 in the third column.

Therefore, one of the ground contacts 11G and two of the signal contacts 11S (S +, S−) are arranged in a staggered manner in three rows.
Thus, when a plurality of staggered arrays are repeatedly arranged in the first direction X, the ground contacts 11G are shared between the terminal portions 15S (S +, S−) of the adjacent signal contacts 11S.

Keep connector described in Example 1, in the entire interval or a part of the section of the electrical component for transmitting the differential signal, and is arranged in a separate column is the ground contacts 11G and signal contacts 11S, and ground contacts 11G The signal contacts 11S can be arranged so that the distance between them is a certain distance suitable for impedance matching.

  Accordingly, the positional relationship (distance, interval, etc.) is the same in the pair of signal contacts 11S (S +, S−) and between the pair of signal contacts 11S (S +, S−).

  The present invention can also be applied as a high-frequency connector used for connecting a signal circuit of a so-called differential transmission system in which one information signal is transmitted as a differential signal using two signal lines.

  In addition, the present invention can be applied as an interface connector and an interior connector used for digital home appliances and personal computers, particularly as a connector for transmitting video signals that require high-speed transmission.

It is a front view which shows Example 1 of the connector which concerns on this invention. It is a bottom view of the connector shown in FIG. It is the perspective view which decomposed | disassembled and showed the connector shown in FIG. FIG. 4 is a sectional view taken along line IV-IV of the connector shown in FIG. 1. 4A is a side view showing one of the lower signal contacts of the connector shown in FIG. 4, FIG. 4B is a side view showing the other of the lower signal contacts of the connector shown in FIG. ) Is a side view showing the lower ground contact. It is explanatory drawing which showed typically the position of the lower contact of the connector shown in FIG. It is the perspective view which expanded and showed a part of several terminal part in the lower contact of the connector shown in FIG. FIG. 2 is a bottom view of a state in which a part of a plurality of terminal portions in a lower contact of the connector shown in FIG. 1 is viewed from the bottom surface of a housing. It is explanatory drawing which showed typically the position of the contact of the connector of the prior art 1. FIG. It is explanatory drawing which showed typically the position of the contact of the connector of the prior art 2. FIG. It is explanatory drawing which showed typically the position of the contact of the connector of the prior art 3. FIG.

3 Upper contact 11 Lower contact 11S (S +, S-) Signal contact 11G Ground contact 14G Ground holding portion 14S Holding portion 15S Contact portion 15G Ground contact portion 16G Ground terminal portion 16S (S +, S-) Terminal portions 17S, 17S ′ Eccentric portion 31 Housing 31a Housing front surface 31d Housing bottom surface 32 Contact accommodating portion 33 Fitting portion 41 Shell 41b Shell fitting portion 51 Substrate X First direction (arrangement direction)
Y Second direction X1 First axis X2 Second axis X3 Third axis Y1 Fourth axis Y2 Fifth axis

Claims (4)

In a connector including a contact portion connected to a mating connector, a contact having a terminal portion connected to a connection object, and a housing holding the contact,
The contact consists of a plurality of signal contacts and a plurality of ground contacts,
The two pairs of adjacent signal contacts and one ground contact constitute one group.
The contact portions are arranged at equal intervals in order in the order of the ground contacts and the signal contacts of the pair in the arrangement direction,
The terminal portions are arranged in three rows, the ground contacts are arranged in the arrangement direction in the second center row, and one of the signal contacts of the pair is in the first row on the contact portion side. Is arranged in the arrangement direction, and the other of the signal contacts of the pair is arranged in the arrangement direction in the third outer row,
In the arrangement direction, the pair of signal contacts are arranged between the two ground contacts, and one terminal part and the other terminal part of the pair of signal contacts are A connector characterized by being displaced in the arrangement direction.   The connector according to claim 1, wherein an interval between the contact portions of the pair of signal contacts and an interval between the terminal portions of the pair of signal contacts are different in the arrangement direction.   The connector according to claim 1, further comprising a shell that covers the housing.   In a connector including a contact portion connected to a mating connector, a contact having a terminal portion connected to a connection object, and a housing holding the contact,
  The contact is composed of a plurality of signal contacts and a plurality of ground contacts, and the two pairs of adjacent signal contacts and one ground contact constitute a group. And
  The contact portions are arranged at equal intervals in order in the order of the ground contacts and the signal contacts of the pair in the arrangement direction,
  The terminal portions are arranged in three rows,
  The ground contacts are arranged in the arrangement direction in the second row at the center,
  One of the signal contacts of the pair is arranged in the arrangement direction in the first row on the contact portion side,
  The other of the signal contacts of the pair is arranged in the arrangement direction in the outer third row;
  In the arrangement direction, the pair of signal contacts are arranged between two ground contacts,
  The signal contacts each have a bent portion provided between the contact portion and the terminal portion,
The terminal portion of one of the signal contacts constituting the pair is directed toward the direction away from the terminal portion of the ground contact adjacent to the one signal contact and the side closer to the contact portion of the one signal contact at the bent portion. Bend and
  The terminal portion of the other signal contact constituting the pair is directed at the bent portion in a direction away from the terminal portion of the ground contact adjacent to the other signal contact and away from the contact portion side of the other signal contact. Connector characterized by bending.

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