JP3236984B2 - Connector with filter element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter element in which a ground line and a signal line are formed by using an FPC element as a filter element constituting a capacitor array and connecting the filter element to a mating contact and a substrate. And a connector comprising:

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a conventional connector with a filter is provided at an insulator 100, a conductive contact 102 held by the insulator 100, and an intermediate portion of the contact 102. And a pair of ground electrodes 104 provided on the outer surface of the dielectric 103. That is, the dielectric 103 and the ground electrode 104 constitute a filter having a capacitor structure.

[0003] A large groove 105 is formed on one surface of the insulator 100. The contact portion 102a of the contact 102 is located in the groove 105. A mating connector (not shown) is fitted into the groove 105. The mating connector is provided with a conductive mating contact.
To the contact portion 102a.

[0004] The contact 102 has a terminal portion 102b which is led out of the insulator 100 and connected to a signal line signal pattern (not shown) formed on a substrate such as a printed circuit board. I have.

Further, the dielectric 103 and the ground electrode 1
04 are fitted in a housing groove 107 formed in the insulator 100.

[0006] A metal front shell 108 and a back shell 109 are attached to the outside of the insulator 100. The back shell 109 is electrically connected to the ground electrode 104 slightly projecting from one surface of the insulator 100 by soldering with a solder 200.

In the connector with a filter, a pair of ground electrodes 104 and a back shell 109 are soldered to each other, and a ground line is formed by connecting the back shell 109 to a ground pattern of a substrate, and noise is reduced. Removal is in progress.

[0008]

However, since the ground electrode 104 must be soldered to the back shell 109, the soldering operation is performed by the contact 10
2 has to be performed, and there is a problem that the number of man-hours increases.

When the number of contacts 102 increases, the interval between a plurality of contacts 102 used in a predetermined connector shape must be reduced, and the shape of the filter needs to be reduced. There is a problem that it cannot be increased.

[0010] Therefore, an object of the present invention is to provide a connector provided with a filter element which can increase the capacitance and does not require a soldering operation.

[0011]

According to the present invention, an insulating housing installed on a substrate, a ground plate member fitted to the housing, and a filter fitted to the housing together with the ground plate member. A housing having a first surface, a base having a second surface parallel to the first surface, a part of the ground plate member provided on the first surface, A first fitting opening for receiving and fitting a part of the filter element, a second fitting opening provided on the second surface for fitting a mating connector, and a right angle from the first surface. And an installation portion installed on the substrate so as to extend, and the filter element has an FPC element in which the number corresponding to the number of mating contacts provided on the mating connector is laminated via an adhesive member. , The FPC element An insulator made of a dielectric, a first conductor for a signal line provided on one surface of the insulator, and a second conductor for a ground line provided on the other surface of the insulator opposite to the one surface. And each of the FPC elements is configured to connect the first conductor to the mating contact one-to-one, and to form a ground formed on the substrate via the ground plate member. A plurality of contact portions formed to connect the second conductor to each of the patterns in a one-to-one manner; and a plurality of connection portions formed to connect one-to-one to a signal line signal pattern formed on the substrate. And a connector provided with a filter element characterized by having the following.

[0012]

1 and 2 show an embodiment of a connector provided with a filter element according to the present invention.

Referring to FIGS. 1 and 2, a connector provided with a filter element includes an insulating housing 1 installed on a substrate 70 such as a printed circuit board, and a part of the housing 1. The housing includes a ground plate member 2 that is incorporated together, and a filter element 5 that is partially incorporated into the housing 1 together with the ground plate member 2.

The filter element 5 includes, as shown in FIG.
It has an FPC (flexible printed circuit) element 52 in which the number corresponding to the number of the mating contacts 4 is laminated via an adhesive member 51 such as an adhesive sheet having both sides coated with an adhesive.

As shown in detail in FIG. 4, one FPC element includes an insulator 54 made of a dielectric and an insulator (insulating layer).
A first conductor (signal line layer) 55 for the signal line provided on one surface of the first conductor 54 and a second conductor (ground) for the ground line provided on the other surface of the insulator 54 opposite to the one surface. (Line layer) 56. First and second conductors 55,
Reference numeral 56 uses a copper foil.

Further, each of the FPC elements 52 includes a contact portion 60 formed so as to connect the first conductor 55 to the mating contact 4 one to one, and a signal line signal pattern (formed on the substrate 70). (Not shown) and a connection portion 61 for one-to-one connection.

The contact portions 60 and the connection portions 61 are formed by laminating the FPC elements 52 one by one so as to be shifted from each other so as to have the same pitch as the signal pattern of the mating contact 4 and the substrate 70. I have.

The filter element 5 thus manufactured has a capacitor array structure. FP per sheet
Assuming that the capacitance of the first conductor 55 of the C element 52 is the vertical width a and the horizontal width b of one FPC element 52 shown in FIG. 3, the dielectric constant ε of the insulator 54, the thickness d, Is given by the following equation.

Capacitance = ε · a × b / d In the case of a Faraday capacitor array structure, a = 10 mm b = 35
mm, ε = three times the dielectric constant of vacuum, and d = 30 μm, a filter having a cutoff frequency of 20 MHz can be made at an input / output impedance of 50Ω, so that a filter sufficiently effective in removing noise can be obtained. .

Returning to FIG. 1, the housing 10 includes a base portion 14 having a first surface 12, a second surface 13 parallel to the first surface 12, and a ground plate provided on the first surface 12. A first fitting opening 15 for receiving a part of the member 2 and a part of the filter element 5, a second fitting opening 16 provided on the second surface 13 for fitting the mating connector 3,
And an installation portion 17 that extends at a right angle from the surface 12 of the device and is installed on the substrate 70.

Furthermore, the first fitting openings 15 on both sides of the first fitting opening 15
A conductive ground lug 30 for holding the ground plate member 2 is attached to the surface 12 of the base. Earth lug 30
Has a fixing portion 31 fixed to the housing 10 and a plate mounting portion 32 facing the installation portion 17 and mounting the ground plate member 2. Each of the plate mounting portions 32 has a screw hole 32a.

Slots 18 for slidably receiving both edge portions of the ground plate member 2 are formed in each of inner surfaces of the first fitting opening 15 in the short direction.

The ground plate member 2 includes a first plate portion 22 having a plate contact portion 21, a second plate portion 23 parallel to the first plate portion 22, and a second plate portion 23 opposite to the plate contact portion 21. 1st and 2nd plate part 21,
And a plate connecting portion 24 having ends 22 connected to each other.

The first plate portion 22 includes an FPC element 52
And a plate contact 25 for ground connection. The plate contact 25 has a screw hole 25a. The second plate portion 23 includes the plate mounting portion 3
2 has a lug contact 26 connected to the ground. The lug contact 26 has a screw hole 26a.

The FPC element 52 has a ground contact 62 that contacts the plate contact 25. The ground contact 62 has a through hole 62a.
The ground contact 62 is a portion where the first conductor 55 is separated by forming an insulating groove 64 so as to divide the first conductor 55 of the FPC element 52. The inner surface of the through hole 62a of the ground contact 62 is plated with metal.

A gap S for inserting the lug contact 26 is provided between the installation portion 17 and the plate attachment portion 32. In the example of FIG. 1, a gap is formed between the installation section 17 and the installation section 17 by forming the upper surface of the installation section 17 in a stepped manner. The screw hole 26a of the lug contact 26, the screw hole (not shown) of the installation part 17, the screw hole 32a of the plate attachment part 32, and the screw hole (not shown) of the substrate 70 are respectively provided with conductive holes penetrating these. The fixing member (screw) 80 is inserted. Lug contact 26, plate mounting portion 32, and substrate 7
The ground pattern 71 formed on the back surface of the “0” forms a ground line.

Next, the assembly of the connector having the filter element will be described.

First, the filter element 5 is attached to the ground plate member 2 using an adhesive. Further, the ground contact 62 of the filter element 5 and the plate contact 25 of the ground plate member 2 are tightened and attached via metal screws. Thus, the second conductor of the filter element 5 and the ground plate member 2 are electrically connected.

Next, the ground plate member 2 on which the filter element 5 is integrally mounted is inserted into the first fitting opening 15 while the lug contact 26 enters the gap S between the housing 10 and the earth lug 30. Then the installation of the connector is completed.

Further, in order to fix the ground plate member 2 to the substrate 70, the fixing member 80 is screwed from the ground pattern 71 side located on the back surface of the substrate 70, and is formed in the plate mounting portion 32 of the earth lug 30. It is fastened to the screw hole 32a and attached. As a result, the ground of the substrate 70 and the second conductor 56 of the filter element 5 are electrically connected to each other, thereby exhibiting a noise removing effect.

The housing 10 is connected to the mating connector 3.
Is fitted through the second fitting opening 16, the first conductor 55 of the filter element 5 comes into contact and is electrically connected by the elastic force of the plate contact portion 21 of the ground plate member 2.

[0032]

As described above, according to the connector provided with the filter element of the present invention, in the connector in which a large number of contacts are arranged, one signal (signal path) corresponds to one signal line layer. The capacitance between the signal and the ground can be used as a filter element by using the FPC element composed of the ground layer.

Also, the FPC elements can be stacked in the total number of signal lines (total number of contacts) and stored in the housing, and the width of the FPC element can be made substantially equal to the width of the housing, so that the capacitance is increased. It is possible to do.

Further, the conventional soldering work is not required, and the number of assembling work steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an exploded state of an embodiment of a connector provided with a filter element of the present invention.

FIG. 2 is a sectional view showing a state where a connector including the filter element of FIG. 1 is assembled.

FIG. 3 is a perspective view showing a state where the filter element of FIG. 1 is disassembled.

FIG. 4 is a perspective view showing a part of one FPC element of FIG. 3;

FIG. 5 is a sectional view showing a conventional connector with a filter.

FIG. 6 is a partial sectional view showing a main part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Ground plate member 3 Mating connector 4 Mating contact 5 Filter element 10 Housing 12 1st surface 13 2nd surface 14 Base part 15 First fitting opening 16 Second fitting opening 17 Installation part 18 Slot 21 Plate contact part 22 First plate part 23 Second plate part 24 Plate connecting part 25 Plate contact 26 Lug contact 30 Ground lug 31 Fixed part 32 Plate mounting part 51 Adhesive member 52 FPC element 54 Insulator 55 First conductive Body 56 Second conductor 60 Contact portion 61 Connection portion 62a Through hole 64 Insulating groove 70 Substrate 80 Fixing member 100 Insulator 102 Contact 103 Dielectric 104 Electrode for ground

Claims (6)

(57) [Claims] 1. An insulative housing installed on a substrate, a ground plate member fitted to the housing,
A filter element fitted to the housing together with the ground plate member, wherein the housing has a first surface, a base portion having a second surface parallel to the first surface, and the first surface A first fitting opening portion provided on the top for receiving and fitting a part of the ground plate member and a part of the filter element;
A second fitting port provided on the surface of the second connector for fitting a mating connector, and a mounting portion extending at a right angle from the first surface and mounted on the substrate, wherein the filter element is an adhesive member. And an FPC element in which the number corresponding to the number of mating contacts provided in the mating connector is laminated, and the FPC element is provided on an insulator made of a dielectric and on one surface of the insulator. A first conductor for a signal line; and a second conductor for a ground line provided on the other surface of the insulator opposite to the one surface. Further, each of the FPC elements is The first conductor is connected to the mating contact one-to-one, and the second conductor is connected one-to-one to each of the ground patterns formed on the substrate via the ground plate member. Contact part, and Connector having a filter element characterized in that it has a connecting portion for connecting one-to-one to the signal pattern of the signal line is formed in a plate. 2. A connector provided with the filter element according to claim 1, wherein conductive ground lugs for holding the ground plate member are attached to first surfaces on both sides of the first fitting opening. A connector provided with a filter element, wherein the ground lug has a plate mounting portion facing the installation portion and mounting the ground plate member. 3. The connector provided with the filter element according to claim 1, wherein inner surfaces on both sides of the first fitting opening are provided.
A connector having a filter element, wherein a slot for slidably receiving both edge portions of the ground plate member is formed. 4. The connector provided with the filter element according to claim 1, wherein the ground plate member has the plate contact portion which faces the contact portion one-to-one and contacts the contact portion side with a pressing force. A first plate portion, a second plate portion parallel to the first plate portion, and a plate connection connecting ends of the first and second plate portions on the opposite side to the plate contact portion. And a connector provided with a filter element. 5. The connector provided with the filter element according to claim 4, wherein the first plate portion is provided with the FPC.
A second plate portion having a lug contact connected to the plate mounting portion; and an FPC element having a ground contact contacting the plate contact. The ground contact is connected to the F
A connector comprising a filter element, wherein the connector is a part formed by separating the first conductor of the PC element so as to divide the first conductor. 6. The connector provided with the filter element according to claim 1, wherein a gap for inserting the lug contact is provided between the installation portion and the plate mounting portion, wherein the lug is provided. The contact, the installation section, the plate mounting section, and the substrate are inserted into through holes formed in the respective axes in a uniaxial direction, and the lug contact, the plate mounting section, and the ground pattern are electrically connected to each other to form a ground line. A connector provided with a filter element, comprising a conductive fixing member to be formed.