JP2006331711A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector 10 capable of reducing cross-talk, improving characteristic impedance, and skew (difference of propagation delay time) as well. <P>SOLUTION: The connector 10 comprises a plurality of signal contacts 14 and ground contacts 16 having contact parts 141, 161 contacting objects to be connected 60, and connection parts 143, 163 contacting connection objects 70, a housing 12 having an insertion hole 32 in which an opening for fitting 22 and an insertion opening 26 in which the objects to be connected 60 and the connection objects 70 are inserted respectively, signal contacts 14, and ground contacts 16 are held and arrayed, and two sheets of shielding plates 18 arranged at insertion opening 26 side in parallel with each other so as to pinch the connection object 70. A means for holding the shielding plates 18 is arranged on the ground contacts 16 or the housing 12, and a contact 38 contacting the shielding plate 18 is formed on the ground contacts 16, and necessary number of signal contacts 14 are arranged between the ground contacts 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a connector used in an electronic / electrical device such as a server or a supercomputer. In particular, the present invention is intended to reduce crosstalk and improve characteristic impedance.

Nowadays, as electronic and electrical devices are miniaturized, there is an increasing demand for miniaturization of connectors, and a connector (not shown) is formed of a housing made of an electrical insulator material and a conductive material. Often provided with contact. The contact includes a contact portion that comes into contact with an object, a fixed portion that is fixed to the housing, and a connection portion that is connected to a substrate or a cable, and the contact is press-fitted or hooked (lance) into the insulator. It is fixed by etc.
As connector miniaturization progresses, for example, as shown in Patent Document 1 shown below, a connector capable of obtaining a predetermined impedance characteristic with a stripline structure and crosstalk noise between adjacent signal contacts as in Patent Document 2 are suppressed. Connectors for improving signal transmission characteristics.
According to the summary of JP-A-9-199231, a ground contact plate penetrating through the central portion of the housing for the purpose of providing a connector having a small size and a predetermined impedance characteristic with respect to the connector of the stripline structure, In a connector comprising signal contact pins arranged in two rows through the housing with the ground contact plate interposed therebetween, and a ground shell covering the outer peripheral surface of the housing, a shell tongue on the side surface portion of the ground shell intersecting the ground contact plate A connector having a configuration in which the shell tongue piece is bent, the tip of the shell tongue piece is fitted into a slit provided in the ground contact plate, and the ground shell and the ground contact plate are connected so as to be conductive is disclosed. By the way, in the scope of claims, as claimed in claim 1, a ground contact plate penetrating through the central portion of the housing, a signal contact pin penetrating the housing across the ground contact plate and arranged in two rows, and the housing A strip line connector having a ground shell covering the outer peripheral surface of the shell, provided with a shell tongue piece on a side surface portion of the ground shell intersecting the ground contact plate, and bending the shell tongue piece to The connector is formed by fitting a portion into a slit provided on an end surface of the ground contact plate, and connecting the ground shell and the ground contact plate so as to be conductive. According to a second aspect of the present invention, a guide groove is provided in the housing, and the leading end portion of the shell tongue piece is inserted into the slit of the ground contact plate with the guide groove as a guide. connector. According to a third aspect of the present invention, a wide portion is provided in the vicinity of the bent portion of the shell tongue piece, and a shoulder end surface of the wide portion is pressed to fit the tip end portion of the shell tongue piece into the slit of the ground contact plate. The connector according to claim 1 or 2, wherein According to a fourth aspect of the present invention, a ground contact plate that penetrates the central portion of the housing, signal contact pins that are arranged in two rows through the housing across the ground contact plate, and a ground shell that covers the outer peripheral surface of the housing The stripline structure connector includes a slit provided in a side surface portion of the ground shell that intersects with the ground contact plate, and an end surface of the ground contact plate that protrudes from a side surface of the housing that intersects with the ground contact plate. There is disclosed a connector or the like characterized by having a joining plate portion provided on the base plate, fitting the joining plate portion into the slit, and connecting the ground shell and the ground contact plate in a conductive manner. ing. According to the summary of Japanese Patent Laid-Open No. 10-334999, a connector for high-speed transmission is intended to improve signal transmission characteristics by suppressing crosstalk noise between adjacent signal terminals in the terminal row direction. The jack connector includes a jack connector that is implanted in an insulator with a pair of rows, and a plug connector that is implanted in the insulator so that a plug terminal corresponds to the jack terminal. A jack ground terminal connected to the ground potential is provided between the jack terminals adjacent in the terminal row direction, and the plug connector is connected to the ground potential between the plug terminals adjacent in the terminal row direction, and the jack connector and the plug connector. A connector is disclosed that includes a plug ground terminal that is connected to the jack ground terminal when connected to the jack. By the way, in the claims, as claimed in claim 1, a jack connector in which a jack terminal row is paired and implanted in an insulator, and a plug connector is paired so that the plug terminal corresponds to the jack terminal. The jack connector has a jack ground terminal connected to the ground potential between the jack terminals adjacent in the terminal row direction, and the plug connector is adjacent in the terminal row direction. A connector having a plug ground terminal connected to a ground potential between the plug terminals and connected to the jack ground terminal when the jack connector and the plug connector are connected. According to a second aspect of the present invention, the jack grounding terminal according to the first aspect has a size that covers a projected area in the terminal row direction of the jack terminal that makes a pair, and the plug grounding terminal according to the first aspect is a pair of the grounded jack terminal. A connector having a size that covers a projection area of the plug terminal formed in the terminal row direction. As a third aspect of the present invention, the connector according to the first aspect includes a shield plate having a size that covers the terminal arrangement area on both sides in the terminal array direction of the terminal arrangement area. 5. The connector according to claim 1, wherein the plug connector according to claim 1 is configured as a right angle type. As a fifth aspect of the present invention, in the connector according to the first aspect, there is provided a wiring method to the connector, etc., characterized in that a balanced line corresponding to a required signal is connected to a terminal paired with each of the jack connector and the plug connector. It is disclosed.

In recent years, as electric and electronic devices have been miniaturized, there has been an increasing demand for miniaturization of connectors, and connectors are becoming lighter, thinner and smaller. In addition, with high-speed transmission (higher signal speed), reduction of crosstalk, improvement of characteristic impedance, and improvement (improvement) of skew (propagation delay time difference) are indispensable.
In the structure of Patent Document 1, since the signal contact is only covered with the ground contact plate and the ground shell, it is possible to obtain a predetermined impedance characteristic, but it does not lead to a reduction in crosstalk.
In the structure of Patent Document 2, the plug terminal and the jack terminal are arranged so as to make a pair, thereby suppressing crosstalk noise between adjacent signal terminals and improving the signal transmission characteristics. This does not lead to improvement (improvement) of skew (difference in propagation delay time).

  The present invention has been made in view of such conventional problems, and can reduce the size of the connector, reduce crosstalk, improve the characteristic impedance, and reduce the skew (propagation delay time difference). We intend to provide a connector that can be improved (improved).

  The object is to contact the connection object 60 with the plurality of signal contacts 14 having the contact part 141 that contacts the connection object 60, the connection part 143 that connects to the connection object 70, and the fixing part 142 fixed to the housing 12. A plurality of ground contacts 16 having a contact piece 34 having a contact portion 161 to be connected, a connection portion 163 to be connected to the connection object 70, and a fixing portion 162 fixed to the housing 12, and a connection object 60 and a connection object 70 on both sides of the depth. In the connector 10 including the fitting port 22 and the insertion port 26 into which the signal contacts 14 and the ground contacts 16 are held and arranged, the connector 70 includes the connection object 70 on the insertion port 26 side. It has two shielding plates 18 arranged in parallel so as to be sandwiched, and the ground contact 16 or the housing A holding means for the shielding plate 18 is provided on the ground 12, the ground contact 16 has a contact 38 that contacts the shielding plate 18, and a required number of the signal contacts 14 are disposed between the ground contacts 16. Can be achieved.

As the holding means, a sandwiching piece 40 is provided substantially in parallel with the connection piece 36 of the ground contact 16, the shielding plate 18 is sandwiched between the connection piece 36 and the sandwiching piece 40 of the ground contact 16, and the connection piece 36 contact points 38 and the shielding plate 18 are brought into contact with each other.
Further, as the holding means, slit grooves 28 are provided on both sides of the housing 12 in the longitudinal direction, and the shielding plate 18 is inserted into the slit grooves 28 so that the contact point 38 of the connecting piece 36 and the shielding plate 18 are in contact with each other. To do.
A convex portion 44 is provided at the tip of the holding piece 40.
Further, the ground contact 16 is provided with a projecting piece 42, the housing 12 is provided with a slit 30 into which the projecting piece 42 enters, and the projecting piece 42 is engaged with the slit 30 so that the ground contacts 16 are substantially parallel to each other. To place.
Two signal contacts 14 are disposed between the ground contacts 16.

As is clear from the above description, according to the connector 10 of the present invention, the following excellent remarkable effects can be obtained.
(1) A plurality of signal contacts 14 having a contact portion 141 that contacts the connection object 60, a connection portion 143 that connects to the connection object 70, and a fixing portion 142 that is fixed to the housing 12, and the connection object 60. A plurality of ground contacts 16 having a contact piece 34 having a contact portion 161, a connection portion 163 connected to the connection object 70, and a fixing portion 162 fixed to the housing 12, and a connection object 60 and a connection object 70 are provided on both sides of the depth. In the connector 10 including the fitting port 22 and the insertion port 26 to be inserted and the housing 12 having the insertion hole 32 in which the signal contact 14 and the ground contact 16 are held and arranged, the connection object 70 is sandwiched between the insertion port 26 side. In this way, the ground contact 16 or the housing 1 The holding means for the shielding plate 18 is provided, the ground contact 16 has a contact 38 that contacts the shielding plate 18, and the required number of the signal contacts 14 are arranged between the ground contacts 16. The connector can be downsized, crosstalk can be reduced and characteristic impedance can be improved, and skew (propagation delay time difference) can be improved (improved).
(2) As the holding means, a holding piece 40 is provided substantially in parallel with the connection piece 36 of the ground contact 16, and the shielding plate 18 is held between the connection piece 36 and the holding piece 40 of the ground contact 16, Since the contact point 38 of the connection piece 36 and the shielding plate 18 are in contact with each other, the shielding plate 18 can be easily held, and at the same time, the conduction between the ground contact 16 and the shielding plate 18 (ground) To reduce crosstalk and improve characteristic impedance.
(3) As the holding means, slit grooves 28 are provided on both sides in the longitudinal direction of the housing 12, and the shielding plate 18 is inserted into the slit grooves 28 so that the contact point 38 of the connecting piece 36 and the shielding plate 18 come into contact with each other. Therefore, the shielding plate 18 can be easily held, and at the same time, the ground contact 16 and the shielding plate 18 can be electrically connected (grounded), thereby reducing crosstalk and reducing the characteristic impedance. It leads to improvement.
(4) Since the convex portion 44 is provided at the tip of the sandwiching piece 40, the shielding plate 18 can be easily sandwiched between the connection piece 36 and the sandwiching piece 40 of the ground contact 16.
(5) Protruding pieces 42 are provided on the ground contact 16, the slits 30 into which the protruding pieces 42 are inserted are provided in the housing 12, and the protruding pieces 42 are engaged with the slits 30 so that the ground contacts 16 are substantially connected to each other. Since they are arranged in parallel, stable conduction between the ground contact 16 and the shielding plate 18 can be obtained, leading to reduction of crosstalk and improvement of characteristic impedance.
(6) Since the two signal contacts 14 are arranged between the ground contacts 16, the crosstalk is reduced and the characteristic impedance is improved.

An embodiment of the connector 10 of the present invention will be described with reference to FIGS.
FIG. 1A is a perspective view of the connector of the present invention as seen from the fitting side, and FIG. 1B is a perspective view of the connector of the present invention as seen from the connection portion side. 2A is a cross-sectional view of the connector of the present invention taken along the signal contact portion, and FIG. 2B is a cross-sectional view of the connector of the present invention taken along the ground contact portion. FIG. 3A is a perspective view of a signal contact, and FIG. 3B is a perspective view of a ground contact.
The connector 10 according to an embodiment of the present invention mainly includes a housing 12, a signal contact 14, a ground contact 16, a shielding plate 18, and a shell 19.

Before describing the connector 10 of the present invention, the connection object 60 and the connection object 70 that enter the fitting port 22 and the insertion port 26 of the connector 10 will be described.
Examples of the connection object 60 include a hard board, a flexible printed board (hereinafter referred to as FPC), and a contact of a mating connector.
Examples of the connection object 70 include a hard substrate and an FPC.

First, the ground contact 16 that is the point of the present invention will be described.
The ground contact 16 is made of metal and is manufactured by a known press process. The material of the ground contact 16 is required to be springy or conductive, and examples thereof include brass, beryllium copper, and phosphor bronze.
The ground contact 16 is protruded from the main body 33 and the two contact pieces 34 projecting from the main body 33 in the direction of the fitting port 22 so as to face each other in parallel. Two connecting pieces 36 arranged to face each other in parallel and two sandwiching pieces 40 arranged on the outside to face the connecting pieces 36 are provided.

The main body portion 33 is provided with a fixing portion 162 fixed to the housing 12, the contact piece 34 is provided with a contact portion 161 in contact with the connection object 60, and the connection piece 36 is provided with the above-described connection piece 36. A connection portion 163 that connects to the connection object 70 is provided.
The contact or connection with the connection object 60 or the connection object 70 is performed by connecting the connection object 60 or the connection object between the contact parts 161 and 161 or the connection parts 163 and 163 of the ground contact 16 facing each other. 70 is sandwiched. The distance between the contact parts 161 or the connection parts 163 is appropriately designed according to the thickness of the connection object 60 or the connection object 70 to be contacted or connected. The shapes of the contact portion 161 and the connection portion 163 are protruded in a curved shape or an R shape so that the contact object 60 or the connection object 70 can be easily contacted or connected.
The holding means for the shielding plate 18 is held by a structure in which the connecting piece 36 and the holding piece 40 are held. Therefore, the dimension between the connection piece 36 and the holding piece 40 is appropriately designed in consideration of the thickness of the shielding plate 18.

A convex portion 44 is provided at the tip of the holding piece 40, and a contact point 38 that contacts the shielding plate 18 is provided near the middle of the connection piece 36. The contact point 38 may be provided on the holding piece 40 side as long as it can contact the shielding plate 18. Considering the pinching property of the shielding plate 40 and the contact stability between the ground contact 16 and the shielding plate 18, it is preferable that the shielding plate 40 is provided on the connection piece 40 side as in this embodiment. The size of the convex portion 44 or the contact point 38 is appropriately designed in consideration of the sandwiching property of the shielding plate 40, the contact stability between the ground contact 16 and the shielding plate 18, the balance when sandwiching, and the like. To do.
The ground contact 16 is provided with a protruding piece 42 that protrudes from the main body 33 in a direction orthogonal to the contact piece 34 and the connection piece 36. By engaging the protruding piece 42 with the slit 30 of the housing 12, the ground contact 16 is arranged substantially in parallel. The size of the protruding piece 42 only needs to enter the slit 30 of the housing 12 and is appropriately designed in consideration of the above role.

Next, the shielding plate 18 which is a point part of the present invention will be described. The shielding plate 18 is made of metal and is manufactured by a known press working. The material of the shielding plate 18 is required to be springy or conductive, and can be brass, beryllium copper, phosphor bronze, or the like.
Two shielding plates 18 are arranged substantially in parallel on the insertion opening 26 side of the housing 12 so as to sandwich the connection object 70 therebetween. The size of the shielding plate 18 is appropriately designed in consideration of reduction of crosstalk, improvement of characteristic impedance, improvement (improvement) of skew (propagation delay time difference), and the like. The position where the shielding plate 18 is disposed is appropriately designed in consideration of reduction in crosstalk, improvement in characteristic impedance, improvement (improvement) in skew (propagation delay time difference), and the like.
The shielding plate 18 is held by being held between the connection piece 36 and the holding piece 40 of the ground contact 16.

  Next, the housing 12 will be described. The housing 12 is an electrically insulating plastic and is manufactured by a known technique of injection molding. The material is appropriately selected in consideration of dimensional stability, workability, cost, etc. Generally, polybutylene terephthalate is used. (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof.

The housing 12 includes at least a fitting portion 20 and an insertion portion 24. The fitting part 20 is provided with a fitting port 22 into which the connection object 60 is fitted, and the insertion part 24 is provided with an insertion port 26 into which the connection object 70 is inserted.
The sizes of the fitting port 22 and the insertion port 26 are appropriately designed in consideration of the size and connectivity of the connection object 60 and the connection object 70.

The housing 12 is provided with an insertion hole 32 for holding and arranging a plurality of the signal contacts 14 and the ground contacts 16 in communication with the fitting portion 20 and the insertion portion 24.
The housing 12 is provided with a slit 30 having a size for receiving the protruding piece 42 of the ground contact 16 so as to correspond to the position where the ground contact 16 is disposed.
The housing 12 is provided with guide grooves 31 for guiding a connection object 70 such as a substrate on both sides in the longitudinal direction. The guide groove 31 is used for guiding the connection object 70 before connecting to the signal contact 14, and the size (width) of the guide groove 31 is appropriately designed in consideration of such a role. Yes. In this embodiment, it is larger than the connection object 70 by 0.03 to 0.05 mm. Further, in order to hold the connection object 70, a rib (projection) is provided and held by press-fitting. In this embodiment, the guide groove 31 is guided by the width of the guide groove 31. For example, the guide groove 31 has a considerably large connection object 70, and a pin or the like that plays the above role is arranged in the guide groove. There is also a method of providing.

Next, the signal contact 14 will be described. The signal contact 14 is made of metal and is manufactured by a known press working. The material of the signal contact 14 is required to have springiness, conductivity, dimensional stability, etc., and examples thereof include brass, beryllium copper, and phosphor bronze.
The signal contact 14 is inserted and fixed to the insertion hole 32 of the housing 12 from the insertion port 26 side by press-fitting. The signal contact 14 has a substantially plate shape as shown in FIG. 3A, and has a contact portion 141 that contacts the connection object 60 on one end side and a connection portion 143 that connects the connection object 70 on the other end side. And a fixing portion 142 that is fixed to the housing 12 between the contact portion 141 and the connection portion 143.
The required number of the signal contacts 14 are arranged between the ground contacts 16 to improve the characteristic impedance and reduce the crosstalk. In this embodiment, the signal contacts 14 are arranged between the ground contacts 16. The book is arranged.

Finally, the shell 19 will be described. The shell 19 is made of metal and is manufactured by a known press working. As the material of the shell 19, workability, dimensional stability, and the like are required, and examples thereof include steel, beryllium copper, phosphor bronze, and the like.
The shell 19 is disposed so as to cover the fitting portion 20 of the housing 12, thereby taking ESD countermeasures. The shell 19 is appropriately designed in consideration of ESD measures and the shape of the fitting portion 20 of the housing 12. The shell 19 is held on the housing 12 by being hooked.

Another embodiment will be described with reference to FIG. FIG. 4 is a perspective view of another connector as viewed from the connecting portion side, explaining another holding means of the shielding plate.
Below, only a different part from the connector 10 mentioned above is demonstrated. The difference is the holding means for the shielding plate 18, and the difference in configuration is the housing 12 and the ground contact 16.
First, the difference between the ground contacts 16 will be described. The holding piece 40 is not provided. That is, only the two connection pieces 36 protrude from the main body portion 33 toward the insertion port 26.

  Next, differences between the housings 12 will be described. The housing 12 is provided with slit grooves 28 for receiving the shielding plate 40 on both sides in the longitudinal direction. As shown in FIG. 4, the shielding plate 18 is held by inserting the shielding plate 40 into the slit groove 28 of the housing 12. The size of the slit groove 28 is appropriately designed in consideration of the retention of the shielding plate 18 and the contact stability between the ground contact 16 and the shielding plate 18. In this embodiment, the shielding plate 18 is fixed by press-fitting by providing a boss in the slit groove 28. The position of the slit groove 28 in the thickness direction is appropriately designed in consideration of the retention of the shielding plate 18 and the contact stability between the ground contact 16 and the shielding plate 18.

  As an application example of the present invention, it is used for a connector used in an electronic / electrical device such as a server or a supercomputer. In particular, crosstalk is reduced, characteristic impedance is improved, and skew (propagation delay time difference) is improved (improved). It is intended.

(A) It is the perspective view which looked at the connector of this invention from the fitting side. (B) It is the perspective view which looked at the connector of this invention from the connection part side. (A) It is sectional drawing which cut the connector of this invention in the signal contact part. (B) It is sectional drawing which cut the connector of this invention in the ground contact part. (A) It is a perspective view of a signal contact. (B) It is a perspective view of a ground contact. It is a perspective view of another connector seen from the connection part side explaining another holding means of a shielding board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,101 Connector 12 Housing 14 Signal contact 16 Ground contact 18 Shielding plate 19 Shell 141, 161 Contact part 142, 162 Fixing part 143, 163 Connection part 20 Fitting part 22 Fitting part 24 Inserting part 26 Inserting part 28 Slit groove 30 Slit 31 Guide Groove 32 Insertion Hole 33 Body 34 Contact Piece 36 Connection Piece 38 Contact 40 Nipping Piece 42 Projection Piece 44 Protrusion 60 Connection Object 70 Connection Object

Claims (6)

A plurality of signal contacts having a contact portion that contacts the connection object, a connection portion that connects the connection object, and a fixed portion that is fixed to the housing, and a contact piece that has a contact portion that contacts the connection object and the connection object A plurality of ground contacts having a connecting portion to be fixed and a fixing portion fixed to the housing, and a fitting port and an insertion port into which a connection object and a connection object are inserted, and a signal contact and a ground contact are held and arranged on both sides of the depth. In a connector comprising a housing having an insertion hole,
There are two shielding plates arranged in parallel so as to sandwich the connection object on the insertion port side, and the ground contact or the housing is provided with means for holding the shielding plate, and the shielding plate is provided on the ground contact. And a required number of the signal contacts are arranged between the ground contacts. As the holding means, a sandwiching piece is provided substantially parallel to the connection piece of the ground contact, the shielding plate is sandwiched between the connection piece and the sandwiching piece of the ground contact, and the contact point of the connection piece and the shielding plate The connector according to claim 1, wherein the connectors are in contact with each other. 2. A slit groove is provided on each side of the housing in the longitudinal direction as the holding means, and the shielding plate is inserted into the slit groove so that the contact point of the connecting piece and the shielding plate are in contact with each other. The connector described. The connector according to claim 2, wherein a convex portion is provided at a tip of the holding piece. The projecting piece is provided in the ground contact, the slit into which the projecting piece enters is provided in the housing, and the ground contacts are arranged substantially in parallel by engaging the projecting piece with the slit. The connector according to 1 or 2, 3 or 4. The connector according to claim 1, wherein two signal contacts are arranged between the ground contacts.

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