JP2009117128A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector in which transmission quality of operation transmission is improved, wasteful number of cores and space are saved, and crosstalk is reduced. <P>SOLUTION: The terminal part 16S of a signal contact 11S and the terminal part 16G of a ground contact 11G are arranged so that the ground contact 11G is at a second row, and one (S+) of the pair of signal contacts 11S at a first row and the other (S-) of the pair of signal contacts 11S at a third row. In the arrangement direction X, the pair of signal contacts 11s are arranged between the ground contacts 11G, and one of the pair of signal contacts 11S and the another are arranged shifted in the arrangement direction against the contact part. <P>COPYRIGHT: (C)2009,JPO&INPIT

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 (operation signal pairs) S + and S- are continuously arranged in a row in the fitting portion. In the board connection portion, there is known a connector in which the ground contacts G are arranged in one upper row and the signal contacts S + and S- are arranged adjacent to the lower row (for example, Patent Documents). 1).

  As prior art 2, as shown in FIG. 10, one ground contact G, one signal contact S−, and one signal contact S + are arranged in a line in the fitting portion in order, In the connection portion, a pair of signal contacts S + and S− is disposed between the two ground contacts G in the upper stage, and a pair of signal contacts S + and S− is disposed between the two ground contacts G in the lower stage. Connectors are known.

  As prior art 3, as shown in FIG. 11, two signal contacts (operating signal pairs) S + and S− are continuously arranged in a line between two ground contacts G in the fitting portion. In the board connection portion, a pair of signal contacts S− and S + is arranged between the 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 (see, for example, Patent Document 2).

  In the prior art 3, when the operation signal is transmitted, if the mounting space is not sufficient because the pitch of the connection portions of the signal contacts S + and S− remains the same, it is difficult to mount the signal. It is divided into a regular staggered arrangement at the connection part and mounted.

  Further, in all or a part of the electrical parts transmitting the operation signal, the arrangement of the connection portions of the connector terminal portions to the printed circuit board is a regular terminal arrangement.

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 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, thereby causing crosstalk. There is a problem that it gets bigger. 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 between the signal contacts S + and S− and the signal contacts S + and S− pairs is not the same from the middle of the wiring from the fitting portion to the connection portion of the board connection portion. There are drawbacks in terms of transmission quality, such as difficulty in impedance matching and increased crosstalk.

  Therefore, an object of the present invention is to provide a connector capable of improving the transmission quality of operation transmission, omitting the number of unnecessary cores and space, and further reducing the 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. The other of the pair of signal contacts is arranged in the arrangement direction in the outer third row, and in the arrangement direction, the pair of signal contacts are arranged between the two ground contacts, 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, the ground contacts and the signal contacts are arranged in three rows in all or a part of the electrical component transmitting the operation signal, and the distance between the ground contact and the signal contact is increased. Improve transmission quality of operation transmission by making the positional relationship, such as distance, the same in signal contact pairs and between signal contact pairs by arranging them to maintain a certain distance suitable for impedance matching. be able to.

  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 in 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 an object to be connected.

  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 +) and a plurality of signal contacts 11S (S−). 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 extending from the other end of the holding portion 14S. 16S.

  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 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. The lower signal contact 11S transmits an operation 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 also to FIGS. 6 to 8, a pair of adjacent signal contact 11S (S +) and signal contact 11S (S−) and one ground contact 11G form one group. It is composed. 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 include three first axes X1, second axes X2, and third axes parallel to the first direction X. It arrange | positions on the basis of each of X3.

  Further, the signal contact 11S (S +, S-) and the ground contact 11G are imaginary planes including the first to third axes X1, X2, and X3 in FIG. 6, and the first to third axes X1, X2 , X3 and a plurality of fourth axes Y1 orthogonal to each other. 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 the first direction X 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 the ground contact 11G, the signal contact 11S (S +), and the signal contact (S−) in the first direction X. ) In this order and arranged in a line at equal 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 connected to the first axis X1 of the first column on the contact portion 15S side of the one signal contact 11S (S +). Arranged in the arrangement direction. 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 arranged 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. (S +, S−) are arranged with different intervals between the terminal portions 16S.

  That is, due to the eccentric portions 17S and 17S ′ provided in each of the pair of signal contacts 11S (S +, S−), the terminal portion 16S (S +) of the signal contact 11S is connected to the first axis Y1 from the first axis Y1. The terminal portion 16S (S−) of the signal contact 11S is shifted in the XA direction of the first direction X from the fourth axis Y1, and is arranged on the fifth axis Y2 that is shifted in the XB direction of the direction X. 5 are arranged on the axis Y2. The fifth axis Y2 is an axis that is parallel to the second direction Y.

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

  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 are arranged.

  Accordingly, 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. .

  In the connector described in the first embodiment, the ground contact 11G is arranged in a row different from the signal contact 11S in the whole or a part of the electrical component transmitting the operation signal, and the signal is connected to the ground contact 11G and the signal. The contact 11S can be arranged so that the distance from the contact 11S is a constant distance suitable for impedance matching.

  Therefore, 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 cross-sectional view of the connector shown in FIG. 1 taken along line IV-IV. (A) is a side view showing one of the lower signal contacts of the connector shown in FIG. 4, (B) 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 where 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.

Explanation of symbols

3 Upper Contact 11 Lower Contact 11S (S +, S-) Signal Contact 11G Ground Contact 14G Ground Holding Part 14S Holding Part 15S Contact Part 15G Ground Contact Part 16G Ground Terminal Part 16S (S +, S-) Terminal Part 17S , 17S 'Eccentric portion 31 Housing 31a Front surface of housing 31d Bottom surface of housing 41 Shell 32 Contact accommodating portion 33 Fitting portion 41b Shell fitting portion 51 Substrate X First direction (arrangement direction)
Y 2nd direction X1 1st axis X2 2nd axis X3 3rd axis Y1 4th axis Y2 5th axis

Claims (3)

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 portion and the other terminal portion of the pair of signal contacts are in contact with the contact portion. 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.

Images