JP3264434B2 - Connector with ground plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector,
More specifically, the present invention relates to a connector with a ground plate provided with a ground plate between two arranged contacts.

[0002]

2. Description of the Related Art Conventionally, a ground plate is provided between two opposing rows of contacts provided on a connector on a plug side or a receptacle side, and this ground plate is connected to a ground pattern on a substrate. 2. Description of the Related Art A connector with a ground plate that can reduce crosstalk generated between opposed contacts is known. This ground plate is provided not only in one of the connectors on the plug side or the receptacle side, but also provided in both connectors, and when these two connectors are fitted together, the two ground plates are joined together to form a single sheet. There is also known one configured to be a ground plate.

[0003]

However, in these conventional connectors with a ground plate, when the ground plate is provided only on one of the plug side and the receptacle side, the ground effect is reduced by half. Further, in the case where the connector is provided on both the plug side and the receptacle side connectors, the number of components is increased as compared with the case where only one ground plate is provided, and a complicated structure for connecting these two ground plates is required.

[0004] The present invention has been made in view of such a problem, and an object of the present invention is to provide a connector with a ground plate that can obtain a sufficient ground effect with a simple structure.

[0005]

In order to achieve the above object, a connector with a ground plate (for example,
In the connector 1) according to the embodiment, a plurality of signal plug contacts are mounted on the left and right sides of the protrusion formed on the plug housing so as to form a left and right pair and extend in two rows back and forth. A pair of signal plug contacts penetrate the base of the protrusion and are integrally connected to form a ground plug contact, and a ground plate (for example, the center ground plate 13 in the embodiment) extends inside the protrusion in the front-rear direction. A plug connector formed by contacting the ground plate with a ground plug contact at the base thereof, and a receiving portion (for example, an embodiment) that fits and receives the protrusion formed on the receptacle housing. A plurality of signal receptors along the left and right inner walls of the side wall 31b and the end 31c) in the configuration Receptacle contacts in which a pair of left and right signal receptacle contacts are integrally connected at the base thereof to form a ground receptacle contact. When the plug housing and the receptacle housing are fitted to each other, the projecting portion is fitted and received in the receiving portion, and the signal plug contact comes into contact with the corresponding signal receptacle contact, and the ground plug contact is formed. Are configured to be in contact with the corresponding ground receptacle contacts. Furthermore, the ground plate protrudes outward from the tip of the protruding portion, and a portion between the two rows of left and right receptacle contacts in the receptacle housing (for example, the bottom wall 3 in the embodiment).
1a) is provided with a groove extending in the front-rear direction, and when the plug housing and the receptacle housing are fitted to each other, a portion (for example, the protruding portion 13a in the embodiment) protruding from the tip of the protruding portion of the ground plate is a receptacle. It is configured to fit into the groove of the housing.

According to such a configuration, when the two connectors are fitted, the projecting portion is fitted and received in the receiving portion so that the signal plug contact comes into contact with the corresponding signal receptacle contact and the ground plug is brought into contact. The contact comes into contact with the corresponding ground receptacle contact. As a result, the corresponding signal plug contact and signal receptacle contact that are in contact with each other are electrically connected, and at the same time, the ground plug contact and the ground receptacle contact are also electrically connected. At this time, since the ground plug contact and the ground receptacle contact are formed by integrally connecting a pair of left and right signal contacts at the base portion, only the plug and the receptacle connector are fitted, and the normal contacts The ground contacts are also connected depending on the connection form, and the ground contacts function as an electric shield, so that crosstalk between signal contacts and noise mixing can be effectively prevented. Furthermore, when the plug and receptacle connector are mated,
The portion of the ground plate protruding from the tip of the protruding portion of the plug housing fits into the groove of the receptacle housing, and the two rows of contact rows attached to the receptacle connector are inserted between the two rows of contact rows attached to the plug connector. One ground plate is provided in the area extending between the two. For this reason, the same ground effect as when the ground plate is provided on both the plug side and the receptacle side connectors can be obtained by using one ground plate. Therefore, the number of components can be reduced as compared with the case where a ground plate is provided for each of the two connectors, and a complicated structure for connecting both ground plates on the same surface is not required, thereby facilitating the production. Also,
Since this ground plate is in contact with the ground plug connector at the base thereof, when the plug and the receptacle connector are fitted, all the ground plug contacts and the ground receptacle contacts are connected via the ground plate. Electrically connected. For this reason, all the ground plugs and receptacle contacts and the ground plate can be grounded only by grounding at least one of the ground plug contacts or the ground receptacle contacts. , The effect of preventing crosstalk and preventing noise mixing can be increased.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 and 2 (FIG. 2)
As shown in FIG. 1, a connector 1 of the present invention includes a plug connector 10 and a receptacle connector 30.
The plug connector 10
A signal is transmitted by contacting the contact 12 on the side with the contact 32 on the side of the receptacle connector 31. Hereinafter, for convenience of description, the left-right direction in FIG. 1 is defined as the front-rear direction, the up-down direction is defined as the up-down direction, and the direction perpendicular to the paper is defined as the left-right direction.

[0008] As shown in FIG.
A plug housing made of an insulating material having a horizontal bottom wall 11a and side walls 11b extending downward from both ends thereof and having an opening downward and having a protruding portion 11c protruding downward from the bottom wall 11a. 11, a plurality of plug contacts 12 formed of a conductive plate material held by the plug housing 11, and one center made of a conductive material and formed inside the protrusion 11c extending in the front-rear direction. And a ground plate 13. As shown in FIG. 2, the protrusion 11c of the plug housing 11
On both sides, there are formed 12 rows of left and right plug contacts extending in the front-rear direction. The plug contact 12 includes a signal contact and a ground contact. The signal plug contact 12 a has an L-shape and has a center ground plate 13.
It is attached so that it may become a pair one by one on the left and right so as to face each other. The ground plug contact 12b has a shape in which the pair of left and right signal plug contacts 12a are joined at the center and is integrated, and is provided at a position corresponding to the pair of signal plug contacts 12a.

In the plug housing 11, a pair of left and right signal plug contacts 12a are arranged so as to be continuously arranged in the front-rear direction, and the signal plug contacts 12a are provided every several pairs (9 pairs in this embodiment). The ground plug contacts 12b are disposed at intervals so as to be separated.

The receptacle connector 30 has a horizontal bottom wall 31a and a side wall 31b extending upward from both ends thereof, and a receptacle housing 31 made of an insulating material which is opened upward. A plurality of receptacle contacts 32 formed of a conductive plate material to be held, and a receptacle housing 3
1 and two side ground plates 33 made of a conductive material and provided one on each of the left and right outer sides. As shown in FIG. 2, two rows of receptacle contacts 32 are formed in the receptacle housing 31. Receptacle contacts 32 include a signal contact and a ground contact, and signal receptacle contact 32a has an L-shape in which an upwardly extending portion is curved. The ground receptacle contact 32b has a shape in which the pair of left and right signal receptacle contacts 32a are joined together at the center and is integrated, and is provided at a position corresponding to the pair of signal receptacle contacts 32a.

In the receptacle housing 31, a pair of left and right signal receptacle contacts 32a is disposed so that a pair of left and right symmetrical signals are continuously arranged in the front-rear direction, and several pairs of the signal receptacle contacts 32a (in the present embodiment). The ground receptacle contacts 32b are arranged at intervals so as to divide every nine pairs.

As can be seen from FIGS. 1 and 2, the signal plug contact 12a and the signal receptacle contact 32a are disposed so as to correspond to each other.
The ground plug contact 12a is provided so as to correspond to the ground receptacle contact 32b. Therefore, when the connectors 10 and 30 are fitted with each other, the signal contacts 12a and 32a come into contact with each other (referred to as a signal portion), and the ground contacts 12b and 32b come into contact with each other (the ground portion). And). FIGS. 3 and 4 are cross-sectional views (signal portions) taken along the line XX in FIG. 1 and a cross-sectional view (ground portions) taken along the line YY in FIG. 1 in a state in which the connectors 10 and 20 are fitted. ).

As shown in FIGS. 2 to 4, the plug housing 11 of the plug connector 10 has a bottom wall 11 which is located horizontally.
a, a side wall 11b extending downward from both ends of the bottom wall 11a, and a protruding portion 11c extending downward from the center of the bottom wall 11a. Therefore, the bottom wall 1
On the lower surface side of 1a, a plug-side space 14 which is surrounded by the side wall 11b and the protruding portion 11c and opened downward is formed.

As shown in FIG. 3, the signal plug contact 12a has a base 15 extending horizontally,
A contact portion 16 extending downward from an inner end of the base portion 15, a projection portion 17 projecting downward from the base portion 15, and a lead portion 18 formed at an outer tip of the base portion 15. On the other hand, the ground plug contact 12b is formed in a shape in which a pair of left and right signal plug contacts 12a are connected at the center as shown in FIG. Arm portions 19 extending downward are formed on both outer sides of the ground plug contact 12b. The arm 19 has a protrusion 19a directed inward at the lower end thereof, and can be elastically deformed in the left-right direction with the support 19b as a fulcrum.

A guide groove 20 is provided on the bottom wall 11a and the protruding portion 11c of the plug housing 11 (and also on the side wall 11b in the case of the ground portion), and the plug contacts 12a and 12b are attached thereto. In the signal portion, a pair of left and right signal plug contacts 12a are provided as shown in FIG. 3, and in the ground portion, as shown in FIG. 4, one ground plug contact 12b is provided with the contact portion 16 and the projection portion 17, respectively. It is press-fitted into the press-fit hole 20 and attached. Therefore, each contact portion 16
Are exposed in the plug side space 14. The lead portions 18 of the plug contacts 12a and 12b are exposed on the upper surface side of the plug housing 11, and a row of the lead portions 18 in the front-rear direction is formed as shown in FIG.

A vertically extending center ground plate 13 is press-fitted into the protruding portion 11c so as to penetrate the inside of the protruding portion 11c in the front-rear direction. The protrusion 13a) protrudes downward. This center ground plate 13
In the signal portion, the left and right signal plug contacts 12a are insulated from the left and right signal plug contacts 12a by the protruding portions 11c as shown in FIG. 3, and in the ground portion, the upper portions of the protruding portions 11c are formed slightly lower as shown in FIG. The portion protruding upward is press-fitted into a cut groove 21 provided in the ground plug contact 12b. Therefore, the center ground plate 13 is electrically connected only to the ground plug contact 12b.

The lead portions 18 of the plug contacts 12a and 12b exposed on the upper surface side of the bottom wall 11a of the plug housing 11 are connected to the plug-side printed circuit board K as shown in FIG.
Attach to 1. Positioning protrusions 44 and 45 are provided above the front and rear ends of the plug housing 11, respectively. The positioning protrusions 44 and 45 are fitted into holes provided on the plug-side printed circuit board K1 side to perform accurate positioning, and then are surface-mounted. The signal plug contact 12a is soldered to the wiring pattern, and the ground plug contact 12b is soldered to the ground pattern.

The receptacle housing 31 of the receptacle connector 30 has a bottom wall 31a located horizontally (the bottom wall 31a shown in FIGS. 3 and 4 is only a part of the center), and both ends of the bottom wall 31a. And a side wall 31b formed to extend upward from the side wall 31b. An end 31c extending horizontally toward the center is formed at the upper end of the side wall 31b, and a receptacle-side space 34 is formed surrounded by the left and right side walls 31b and the end 31c. As shown in FIGS. 3 and 4, a groove 48 for fitting the center ground plate 13 is provided on the upper surface side of the center of the bottom wall 31a so as to extend in the front-rear direction.

Signal receptacle contact 32a
As shown in FIG. 3, a base 35 extending horizontally, a contact portion 36 extending upward while curving upward from an inner end of the base 35, and a contact portion 36 extending upward from the base 35.
And a lead portion 38 formed at the outer end of the base 35. The contact portion 36 can be elastically deformed in the left-right direction with the base 36a below the fulcrum as a fulcrum. On the other hand, the ground receptacle contact 32b is formed in a shape in which a pair of left and right signal receptacle contacts 32a are connected at the center as shown in FIG. At both outer sides of the ground receptacle contact 32b, there are mounting portions 39 extending upward.

The bottom wall 31a of the receptacle housing 31
Further, a press-fit hole 41 is provided in the side wall 31b, and the receptacle contacts 32a and 32b are attached thereto. In the signal portion, a pair of left and right signal receptacle contacts 32a are provided as shown in FIG. 3, and in the ground portion, one ground receptacle contact 32b is provided as shown in FIG. Press fit and attached. Therefore, each contact portion 36 is located in the receptacle-side space 34. Here, when both connectors 10 and 30 are not fitted, the space between the left and right contact portions 35 is set to be smaller than the width of the protruding portion 11c of the plug connector 10 fitted therein. In addition, each receptacle contact 32
The lead portions 38a and 32b are exposed on the lower surface side of the bottom wall 31a, and the rows of the lead portions 38 in the front-rear direction are formed as shown in FIG.

Side wall 31b of receptacle housing 31
Side ground plates 33 extending in the front-rear direction
However, a curved portion 33a formed by bending the upper end inward is press-fitted into a cut groove 42 above the side wall 31b and attached. As shown in FIGS. 2 to 4, the side ground plate 33 is insulated from the left and right signal receptacle contacts 32a in the signal portion by the side walls 31b, and the ground receptacle contact 32b is connected to the side ground plate 33 in the ground portion. Kerf 40
(See FIG. 2). Therefore, the side ground plate 33 is electrically connected only to the ground receptacle contact 32b. The side ground plate 33 is provided with a recess 43 at a portion corresponding to the side of the ground receptacle contact 32.

Bottom wall 31a of receptacle housing 31
Each receptacle contact 32a exposed on the lower surface side of
The lead portion 32b is attached to the receptacle-side printed circuit board K2 as shown in FIG. Positioning projections 46 are provided below the front and rear ends of the receptacle housing 31,
47 are provided, and after accurate positioning is performed by being fitted into a hole provided on the receptacle-side printed circuit board K2 side, the signal receptacle contact 32a is formed into a wiring pattern by a surface mounting method.
The ground receptacle contacts 32b are soldered so as to respectively correspond to the ground patterns.

The plug connector 10 configured as described above
And the receptacle connector 30 is fitted by fitting the entire portion sandwiched between the two side ground plates 33 on the receptacle connector 30 side into the plug-side space 14.
The projecting portion 11c of the plug connector 10 is
This is performed by fitting into the receptacle side space 34 from between 1c. At this time, the respective contact portions 16 of the plug contact row formed on both the left and right sides of the protruding portion 11c are elastically connected to the respective contact portions 36 of the left and right receptacle contact rows formed in the receptacle side space 34 with the root portion 36a as a fulcrum. The receptacle contacts 32 are spread out within the deformable area.
The contact portion 36 on the side of the plug contact 12 has an appropriate contact force.
Abuts against the contact portion 16 on the side. Thus, the plug contact 12 and the receptacle contact 32 are electrically connected. At this time, the projecting portion 13a of the center ground plate 13 projecting from the lower end of the projecting portion 11c on the plug housing 11 side is connected to the receptacle housing 31.
Into the groove 48 provided in the bottom wall 31a on the side.

When the plug connector 10 and the receptacle connector 30 are fitted together, the arm 19 of the ground plug contact 12b is smoothly pushed outward by the curved portion 33a of the side ground plate 33.
When the fitting of both connectors 10 and 30 is completed, the arm 19
Are fitted into the depressions 43 of the side ground plate 33. At the moment of the insertion, a click sound is emitted, so that it is possible to confirm that both connectors 10 and 30 are properly connected.

As described above, when the two connectors 10 and 30 are fitted together, the projecting portion 13a of the center ground plate 13 fits into the groove 48 of the bottom wall 31a of the receptacle housing 31, so that the two One ground plate is provided in a region extending from between the 12 rows of plug contacts 12 and between the two rows of receptacle contacts 32 mounted on the receptacle connector 30. For this reason, crosstalk generated between the left and right signal plug contacts 12a and the left and right signal receptacle contacts 32a that are disposed opposite to each other with the center ground plate 13 interposed therebetween is caused by the center ground plate 13 (including the protrusion 13a). And a side ground plate 33 to form a strip line, and the plug-side printed circuit board K via the ground plug contact 12b and the ground receptacle contact 32b.
1 and a ground pattern on the receptacle-side printed board K2 (grounded). Further, noise generated outside the connector 1 is absorbed by the side ground plate 33 provided outside the receptacle connector 30 and dropped to the ground pattern on the receptacle-side printed board K2 via the ground receptacle contact 32b ( Grounded). For this reason, crosstalk and noise generated inside and outside the connector 1 can be reduced, and their influence on the signal characteristics of the connector 1 can be suppressed.

As described above, according to the connector of the present invention,
Using one center ground plate 13, a ground effect equivalent to that obtained when the center ground plate is provided on both the plug side and the receptacle side connectors 10 and 30 can be obtained. Therefore, the number of components can be reduced as compared with the case where the ground plate is provided for each of the connectors 10 and 30, and a complicated structure for connecting both ground plates on the same surface is not required, so that the production is made. It will be easier.

[0027]

As described above, according to the connector with a ground plate according to the present invention, when both connectors are fitted,
First, the signal plug contact makes contact with the corresponding signal receptacle contact, and the ground plug contact makes contact with the corresponding ground receptacle contact. At this time, since the ground plug contact and the ground receptacle contact are formed by integrally connecting a pair of left and right signal contacts at the base portion, only the plug and the receptacle connector are fitted, and the normal contacts The ground contacts are also connected depending on the connection form, and the ground contacts function as an electric shield, so that crosstalk between signal contacts and noise mixing can be effectively prevented. Also,
When the plug and the receptacle connector are fitted, the portion of the ground plate that protrudes from the tip of the protruding portion of the plug housing fits into the groove of the receptacle housing, and from between two rows of contact rows attached to the plug connector. Since a single ground plate is provided in a region extending between the two contact rows attached to the receptacle connector, a single ground plate is used to ground both the plug side and the receptacle side connectors. The same ground effect as when a plate is provided can be obtained. Therefore, the number of components can be reduced as compared with the case where a ground plate is provided for each of the two connectors, and a complicated structure for connecting both ground plates on the same surface is not required, thereby facilitating the production. further,
Since the ground plate is in contact with the ground plug connector at the base, when the plug and the receptacle connector are fitted, all the ground plug contacts and the ground receptacle contacts are electrically connected via the ground plate. Are connected to each other, just grounding at least one ground plug contact or ground receptacle contact,
All the grounding plugs and receptacle contacts can be grounded to the ground plate, and the plugs and receptacle connectors in the fitted state can be effectively electrically shielded to prevent crosstalk and noise. can do.

[Brief description of the drawings]

FIG. 1 is a side view showing a connector according to the present invention.

FIG. 2 is a perspective view of a section A in FIG. 1 of the connector.

FIG. 3 is a sectional view of a signal portion in a state where the connector is fitted.

FIG. 4 is a cross-sectional view of a ground portion when the connector is fitted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector 10 Plug connector 11 Plug housing 11c Projection part 12 Plug contact 13 Center ground plate 13a Projection part 30 Receptacle connector 31 Receptacle housing 31b Side wall 32 Receptacle contact 48 Groove part

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-321358 (JP, A) JP-A-7-114952 (JP, A) JP-A-10-106684 (JP, A) JP-A-6-106 236786 (JP, A) JP-A-9-199231 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/648 H01R 23/02 H01R 23/68

Claims (1)

(57) [Claims] 1. A plurality of signal plug contacts are mounted on the left and right sides of a protrusion formed in a plug housing in a pair of right and left pairs, extending in two rows back and forth, and arranged in pairs. A contact penetrates through the base of the protruding portion and is integrally connected to form a ground plug contact.A ground plate is disposed inside the protruding portion so as to extend in the front-rear direction. A plug connector, which is configured to be in contact with the ground plug contact, and a plurality of signal receptacle contacts for the left and right pairs along the left and right inner walls of the receiving portion that fits and receives the projecting portion formed on the receptacle housing. A pair of left and right signal receptacles And a receptacle connector having a grounded receptacle contact formed integrally at a base portion thereof. When the plug housing and the receptacle housing are fitted to each other, the projecting portion is fitted to the receiving portion. The signal plug contact is in contact with the corresponding signal receptacle contact, and the ground plug contact is in contact with the corresponding ground receptacle contact. A groove extending in the front-rear direction is provided at a portion of the receptacle housing between the two rows of receptacle contacts, the plug housing and the receptacle housing being fitted to each other. Grand fitted with connectors, characterized in that it is configured so that the tip projecting portion from the projecting portion is fitted into the groove of the receptacle housing, in the ground plate when the.