JPH0955265A - Connector with filter element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a connector with a large capacitance by using an FPC element for a filter element comprising a capacitor array, bonding the filter element and a ground plate member and fixing it to a housing on a board by a screw. SOLUTION: A filter element 5 comprising an FPC element is applied on the a ground plate member 2 by a bonding agent, the ground contact element 62 of the filter element 5 and the plate contact element 25 of the ground plate member 2 are fastened together through a metal-made screw, and the second conductor of the filter element 5 and the ground plate member 2 are electrically connected to each other. The ground plate member 2 in which the filter element 5 integrated so that a lug contact element 26 enters a gap S between a housing 10 and an earth lug 30 is inserted into a first fitting part 15. Further, a fixing member 80 is fastened by a screw from the ground pattern side located in the rear surface of a board 70 and fastened in a threaded hole 32a formed in the plate mounting part 32 of the earth lug 30 to mount the filter element 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses an FPC element as a filter element constituting a capacitor array, and connects the filter element to a mating contact and a substrate to form a ground line-signal line. Relating to the connector.

[0002]

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

A large groove portion 105 is formed on one surface of the insulator 100. The contact portion 102a of the contact 102 is located in the groove portion 105. A mating connector (not shown) is fitted in the groove 105. The mating connector is provided with a conductive mating contact, and when mating, the mating contact is the contact 102.
Contact the contact portion 102a of.

Further, the contact 102 has a terminal portion 102b which is led out to the outside of the insulator 100 and is connected to a signal pattern (not shown) for a signal line formed on a substrate such as a printed circuit board. There is.

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

A metal front shell 108 and a back shell 109 are attached to the outside of the insulator 100. The back shell 109 is soldered to the ground electrode 104 slightly protruding from one surface of the insulator 100 by the solder 200 to be electrically connected.

In the filter-equipped connector, the pair of ground electrodes 104 and the back shell 109 are soldered to each other, and the back shell 109 is connected to the ground pattern of the board to form a ground line and to prevent noise. It is being removed.

[0008]

However, since the ground electrode 104 must be soldered to the back shell 109, the soldering work is performed by the contact 10.
There is a problem that the number of work steps must be increased and the number of work steps must be increased.

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

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a connector having a filter element which can increase the capacitance and does not require soldering work.

[0011]

According to the present invention, an insulative 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 portion having a second surface parallel to the first surface, a part of the ground plate member provided on the first surface, and A first fitting opening for receiving a part of the filter element and fitting it, a second fitting opening for fitting a mating connector provided on the second surface, and a right angle from the first surface The filter element has a stack of FPC elements corresponding to the number of mating contacts provided on the mating connector via an adhesive member. , The FPC element An insulator made of a dielectric material, a first conductor for a signal line provided on one surface of the insulator, and a first conductor for a ground line provided on the other surface of the insulator opposite to the one surface. Each of the FPC elements has one of the first conductors connected to the mating contact in a one-to-one relationship, and the ground formed on the substrate via the ground plate member. A plurality of contact portions formed to connect the second conductors to the patterns in a one-to-one correspondence, and a plurality of connection portions for connecting the signal patterns for the signal lines formed on the substrate in a one-to-one correspondence A connector provided with a filter element characterized by having:

[0012]

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

Referring to FIGS. 1 and 2, a connector provided with a filter element has an insulative housing 1 installed on a substrate 70 such as a printed circuit board, and a part of the housing is fitted in this housing. A ground plate member 2 that is assembled together is provided, and a filter element 5 that is partially installed in the housing 1 together with the ground plate member 2.

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

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

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

The contact portions 60 and the connecting portions 61 are formed by shifting the positions of the FPC elements 52 one by one so that the contact portions 60 and the connecting portions 61 have the same pitch as the signal patterns of the mating contacts 4 and the substrate 70. There is.

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

Capacitance = ε · a × b / d farad In the case of a capacitor array structure, a = 10 mm b = 35
mm, ε = 3 times the dielectric constant of vacuum, and d = 30 μm, a filter with a cut-off frequency of 20 MHz can be produced when the input / output impedance is 50Ω, and thus a filter having a sufficient effect of 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 is installed on the substrate 70 and extends at a right angle from the surface 12 of FIG.

Furthermore, the first fittings on both sides of the first fitting port portion 15 are provided.
A conductive ground lug 30 for holding the ground plate member 2 is attached to the surface 12 of the. Ground lug 30
Has a fixed portion 31 fixed to the housing 10 and a plate attachment portion 32 that faces the installation portion 17 and attaches the ground plate member 2. A screw hole 32a is formed in each of the plate mounting portions 32.

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

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 on the opposite side of the plate contact portion 21. The first and second plate portions 21,
And a plate connecting portion 24 in which the ends of 22 are connected to each other.

The first plate portion 22 includes an FPC element 52.
It has a plate contactor 25 for ground connection to. A screw hole 25 a is formed in the plate contact 25. The second plate portion 23 includes the plate mounting portion 3
2 has a lug contact 26 that is grounded. The lug contact 26 is formed with a screw hole 26a.

The FPC element 52 has a ground contact 62 which contacts the plate contact 25. Through holes 62 a are formed in the ground contact 62.
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 metal-plated.

A gap S for inserting the lug contact 26 is provided between the installation portion 17 and the plate mounting portion 32. In the example of FIG. 1, a gap is formed between the installation portion 17 and the installation portion 17 by forming the upper surface of the installation portion 17 into a stepped shape. Each of the screw hole 26a of the lug contact 26, the screw hole (not shown) of the installation portion 17, the screw hole 32a of the plate mounting portion 32, and the screw hole (not shown) of the substrate 70 penetrates through them. 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 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 with an adhesive. Further, the ground contactor 62 of the filter element 5 and the plate contactor 25 of the ground plate member 2 are tightened and attached via metal screws. With this, 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 is inserted into the gap S between the housing 10 and the ground lug 30. Then, the assembly 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 side of the ground pattern 71 located on the back surface of the substrate 70 and is formed on the plate mounting portion 32 of the ground lug 30. Tighten and attach to the screw hole 32a. 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, so that the noise removing effect is exerted.

The housing 10 has a mating connector 3
Is fitted from the second fitting opening portion 16, the first conductor 55 of the filter element 5 is brought into contact with and electrically connected by the push-up force due to the elasticity of the plate contact portion 21 of the ground plate member 2.

[0032]

As described above with reference to the embodiments, according to the connector including the filter element of the present invention, in a connector in which a large number of contacts are lined up, a signal line layer for one contact (signal path), By using the FPC element including the ground layer, the capacitance between the signal and the ground can be used as the filter element.

Further, the FPC elements can be stacked and stored in the housing by the total number of signal lines (total number of contacts), and the width dimension of the FPC elements can be made almost equal to the width dimension of the housing, so that the capacitance is large. It becomes possible to do.

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

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing an assembled state of a connector including the filter element of FIG.

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

FIG. 4 is a perspective view showing a part of the single FPC element shown in FIG. 3;

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

6 is a partial cross-sectional view showing the main parts of FIG.

[Explanation of symbols]

 1 Housing 2 Ground Plate Member 3 Mating Connector 4 Mating Contact 5 Filter Element 10 Housing 12 First Surface 13 Second Surface 14 Base Part 15 First Fitting Portion 16 Second Fitting Portion 17 Installation Portion 18 Slot 21 Plate contact part 22 First plate part 23 Second plate part 24 Plate connecting part 25 Plate contactor 26 Lug contactor 30 Ground lug 31 Fixing part 32 Plate mounting part 51 Adhesive member 52 FPC element 54 Insulator 55 First conductivity Body 56 Second conductor 60 Contact part 61 Connection part 62a Through hole 64 Insulation groove 70 Substrate 80 Fixing member 100 Insulator 102 Contact 103 Dielectric 104 Ground electrode

Claims (6)

[Claims] 1. An insulative housing installed on a substrate, and a ground plate member fitted to the housing,
A filter element that fits into the housing together with the ground plate member, the housing including 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 first fitting portion for receiving and fitting a part of the ground plate member and a part of the filter element;
A second fitting port portion that is provided on the surface of the mating member and that mates with a mating connector, and an installation portion that is installed on the substrate at a right angle from the first surface, and the filter element is an adhesive member. The FPC element is provided by stacking a number of sheets corresponding to the number of mating contacts provided on the mating connector via the insulator. The FPC element is provided with an insulator made of a dielectric material and provided on one surface of the insulator. A first conductor for the signal line and a second conductor for the ground line provided on the other surface of the insulator opposite to the one surface, and each of the FPC elements further includes: Formed so that the first conductor is connected to the counterpart contact in a one-to-one relationship, and the second conductor is connected to the ground pattern formed on the substrate via the ground plate member in a one-to-one relationship. And the contact part 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 portion. The grounding lug has a plate mounting portion that faces the installation portion and that mounts the ground plate member. 3. A connector provided with the filter element according to claim 1, wherein inner surfaces on both sides of the first fitting opening are
A connector provided with a filter element, wherein a slot is formed to slidably receive both edge portions of the ground plate member. 4. The connector provided with the filter element according to claim 1, wherein the ground plate member has the plate contact portion that faces the contact portion in a one-to-one manner 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 the ends of the first and second plate portions opposite to the plate contact portion. And a connector having a filter element. 5. The connector provided with the filter element according to claim 4, wherein the first plate portion is the FPC.
The second plate portion has a lug contact connected to the plate mounting portion, and the FPC element has a ground contact for contacting the plate contact. The ground contact is
A connector provided with a filter element, which is a portion of the PC element which is cut off and formed so as to divide the first conductor. 6. A 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 attachment portion, and the lug is provided. The contact, the installation portion, the plate mounting portion and the substrate are inserted through through holes pierced through in a uniaxial direction, and the lug contact, the plate mounting portion, and the ground pattern are electrically connected to each other to form a ground line. A connector having a filter element, which has a conductive fixing member to be formed.