JP3071893B2 - Connector with noise filter - 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 provided with a noise filter which is used by being inserted between substrates arranged in parallel at a predetermined interval and electrically connects the substrates.

[0002]

2. Description of the Related Art Conventionally, in an electronic device, a plurality of electronic circuit boards on which electronic components such as a microcomputer are mounted are arranged substantially in parallel at predetermined intervals, and the electronic circuit boards are electrically connected. There is one that is configured by being connected together.

In such an electronic device, a connector is used to connect a predetermined portion between the substrates. The connection of the connector has been performed by manually fitting the connector body to a terminal portion provided to protrude from the board surface.

[0004]

However, since the distance between the substrates is small, the operation of connecting the connectors is extremely complicated. In recent years, in an electronic device, the number of microcomputers used and the clock frequency have been increased, and as a result, electromagnetic noise generated by the electronic component is generated by other electronic components or signal lines in the vicinity. Or the electromagnetic noise from outside may affect the signal lines and electronic components, which may cause the electronic components or electronic devices to malfunction. If a noise filter is provided on an electronic circuit board to prevent such a problem, there is a problem that the electronic circuit board becomes large due to the space occupied by the noise filter.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a noise filter connector which can sufficiently remove electromagnetic noise and can be easily mounted between substrates. The purpose is to provide.

[0006]

According to a first aspect of the present invention, there is provided a connector for electrically connecting a predetermined portion between substrates disposed substantially in parallel at a predetermined interval. And comprising: a first and a second contact portion provided to face each other; and a flexible connecting portion for connecting the first and the second contact portions so as to be able to approach and separate from each other. A contact body made of an insulator, an electrode portion provided on each of the first and second contact portions and protruding to the outside, and the electrode portion of the first contact portion extending along the contact body. A connector with a noise filter, comprising: a conductor that electrically connects the electrode portion of the second contact portion to the electrode portion; and a noise filter connected to the conductor.

According to a second aspect of the present invention, the noise filter includes a dielectric member provided with two parallel spiral grooves, and a conductor formed in the groove by vacuum injection. It is characterized by having.

[0008]

In the connector with a noise filter of the present invention, the first contact portion and the second contact portion are connected by a flexible connecting portion. Be close. The connector with the noise filter is inserted into a predetermined position between the electronic circuit boards in a state where the first contact portion and the second contact portion are close to each other. After the insertion, when the applied force is released, the first contact portion and the second contact portion are separated from each other. Thereby, the electrode portions provided on the first and second contact portions come into contact with predetermined terminals of the electronic circuit board,
Predetermined portions between the electronic circuit boards are electrically connected via a conductor provided along the connector body.

A noise filter connected to the conductor of the connector body removes a noise component from an electric signal flowing through the conductor.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a connector with a noise filter according to one embodiment of the present invention. In FIG. 1, a connector body 2 of a connector 1 with a noise filter includes a first contact portion 3 and a second contact portion 4 provided to face each other at a predetermined interval, and first and second contact portions. And a connecting portion 5 connected to the first and second contact portions 3 and 4 so as to be able to approach and separate from each other.
The contact body 2 is formed of a flexible insulating material.

The first contact part 3 and the second contact part 4 are provided with electrode parts 6 and 7 protruding to the outside, respectively. A conductor pattern 8 is provided along the inner surface of the contact body 2. The conductor pattern 8 includes a portion 81 from one electrode portion 6 to the connection portion 5 and the other electrode portion 7
To the connecting portion 5.

The conductor pattern 8 is connected to the electrode portions 6 and 7 via through holes formed in the first and second contact portions 3 and 4. The connecting portion 5 is provided with a noise filter 9 for removing noise from an electric signal or the like flowing through the conductor pattern 8. The noise filter 9
As described later, the portion 81 and the portion 8 of the conductor pattern 8
2 respectively. Further, a ground wire 10 is taken out from the noise filter 9.

FIG. 2 is a plan view showing the configuration of a noise filter used in the connector with a noise filter shown in FIG. FIG. 3 is an enlarged sectional view of the noise filter shown in FIG. FIG. 4 is an equivalent circuit diagram of the noise filter shown in FIG. Next, the configuration of the noise filter used in this embodiment will be described.

The noise filter 9 is, as shown in FIG.
It comprises a dielectric chip 11 and two parallel spiral conductors 12 and 13 provided on the surface of the dielectric chip 11. One end 121 of the conductor 12 is connected to the ground wire 10. One terminal 131 of the conductor 13 is connected to the portion 81 of the conductor pattern 8. The other terminal 132
Is connected to a terminal 133 via a conductive portion 14 formed on the back surface of the dielectric chip 11, and the terminal 133 is connected to a portion 82 of the conductive pattern 8.

[0015] As shown in FIG.
Are grooves 15, 16 formed in the dielectric chip 11, respectively.
Formed. As a material of the conductors 12 and 13, for example, copper is used. As shown in FIG. 4, the conductor 13 connected to the terminals 131 and 132 functions as a first inductor L1, and the conductor 12 connected to the terminal 121 functions as a second inductor L2. Also,
As shown in FIG. 3, the conductors 12 and 13 face each other with a wall 111 interposed therebetween, so that
2 and 13 are capacitively coupled by a capacitance C. Therefore, the noise filter 9 functions as an LC type noise filter.

The noise filter 9 shown in FIG. 2 is attached to the connecting portion 5 shown in FIG. Of course, the noise filter 9 may be formed integrally with the connecting portion 5. FIG. 5 is an explanatory diagram of a manufacturing state of the noise filter shown in FIG. 2, and FIG. 6 is a cross-sectional view showing a method of manufacturing the noise filter shown in FIG. Next, a method for manufacturing a noise filter will be described.

As shown in FIG. 5, a large number of noise filters are manufactured from the dielectric substrate 20 at one time. First, FIG.
Grooves 15 and 16 shown in FIG. 6B are formed in the formation region of each noise filter of the dielectric substrate 20 shown in FIG.
The grooves 15 and 16 may be formed by cutting the dielectric substrate 20, or may be formed by performing pattern exposure and development using photolithography. Further, it may be formed by injection molding a synthetic resin into a mold having a pattern of the grooves 15 and 16.

Next, the dielectric substrate 20 in which the grooves 15 and 16 are formed is put into a vacuum oven containing copper paste, and the dielectric substrate 20 is immersed in the copper paste. As a result, the grooves 15, 16 are filled with the copper paste 40 as shown in FIG. Next, the dielectric substrate 20 is taken out of the copper paste.
At this time, the copper paste adheres to the surface of the dielectric substrate 20. Next, the copper paste is dried and solidified to form a groove 1.
Conductors (12, 13) are formed in (5, 16).

Next, the surface of the dielectric substrate 20 is polished. As a result, as shown in FIG.
The solidified copper paste adhered to the surface of No. 0 is removed.
For polishing, for example, an automatic polishing machine is used. Next, as shown in FIG. 6E, the dielectric substrate 20 and the conductor 1
An insulating protective film 50 is formed on the layers 2 and 13. Next, holes are made in the insulating protective film 50 on the ends of the conductors 12 and 13, and the terminals 121 and 131 are provided. Next, the terminal 132 is taken out from the back surface of the dielectric substrate 20 by making a hole in the substrate, and the conductor 14 is provided on the back surface of the dielectric substrate 20. A connection is made by soldering, a through hole is made in the dielectric substrate 20, and a terminal 133 is provided on the surface of the dielectric substrate 20 located at the opening of the through hole.
Is provided, and the terminal 133 and the conductor 14 are connected by soldering.

Next, the electrical characteristics of the noise filter 9 manufactured by the manufacturing method shown in FIG. 6 are inspected. As shown in FIG. 7, terminals 121, 131, and 133 are provided at equal intervals in the vertical and horizontal directions on the surface of the noise filter 9. Therefore, inspection needles are provided at positions corresponding to all the terminals 121, 131, and 133. If the inspection device is used, the inspection of the noise filter 9 can be performed collectively. The dielectric substrate 20 on which a predetermined number of noise filters 9 are formed is individually divided at cuts 30.

Thus, for example, 40 cm × 40 c
3,200 noise filters of 5 mm × 10 mm can be manufactured from the dielectric substrate 20 of m. Therefore, a noise filter can be made very efficiently. FIG.
FIG. 4 is an explanatory diagram of a use state of the connector with a noise filter of the present embodiment. As shown in FIG. 8, the connector 1 with a noise filter is used by being inserted between two electronic circuit boards 100.

When the connector 1 with a noise filter is inserted between the electronic circuit boards 100, the first contact part 3 and the second contact part 4 are pressed inward from the outside and brought close to each other. In this state, the external force is released after the connector 1 with the noise filter is inserted into a predetermined position. Then, the first contact portion 3 and the second contact portion 4 are separated from each other, and the electrode portions 6 and 7 provided in the contact portions contact the terminals provided on the electronic circuit board 100.

The ground wire 10 is connected to a ground terminal of the electronic device or a housing of the electronic device. Noise filter 9
Removes a noise component from the electric signal flowing through the conductor pattern 8. As described above, according to the present embodiment, the noise filter 9 provided in the connector main body 2 sufficiently removes electromagnetic noise generated in the electronic circuit board or electromagnetic noise from the outside, thereby preventing malfunction of the electronic device. Is done.

The noise filter 9 includes a dielectric substrate 20 provided with two parallel spiral grooves 15 and 16, and a conductor 12 formed in the grooves 15 and 16 by vacuum injection.
13, the configuration is extremely simple. Since the noise filter 9 of this embodiment can be mass-produced, the production efficiency can be greatly improved. As a result, a highly reliable noise filter can be manufactured with extremely high production efficiency.

In addition, the inspection of the electrical characteristics of the noise filter can be performed on the entire substrate at once, so that the inspection can be performed in a very short time. Furthermore, since the noise filter is provided in the connector main body, it is possible to prevent the electronic device or the electronic circuit board of the electronic component from being enlarged.

Although the present embodiment has been described in detail, the present invention is not limited to the above embodiment, but can be implemented in various modes. For example, as shown in FIG. 9, a plurality of connector bodies 2 may be connected. The distance between the connector bodies 2 is set to the distance between the terminals of the electronic circuit board to be used. In this case, the same effects as in the above embodiment can be obtained, and the number of connectors can be reduced, so that the cost can be reduced.

If the electronic circuit board has a ground terminal,
The one corresponding to the ground terminal of the connector main body 2 can be shared as the ground of the noise filter. Therefore, in this case, the ground wire 10 becomes unnecessary.

[0028]

According to the first aspect of the present invention, it is possible to provide a connector with a noise filter which can sufficiently remove electromagnetic noise and can be easily mounted between substrates.

According to the second aspect of the present invention, it is possible to provide a noise filter connector having a highly reliable, inexpensive and highly productive noise filter.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connector with a noise filter according to an embodiment of the present invention.

FIG. 2 is a plan view showing a configuration of a noise filter used in the connector with a noise filter shown in FIG.

FIG. 3 is an enlarged sectional view of the noise filter shown in FIG.

FIG. 4 is an equivalent circuit diagram of the noise filter shown in FIG.

FIG. 5 is an explanatory diagram of a manufacturing state of the noise filter shown in FIG. 2;

FIG. 6 is a sectional view showing a method of manufacturing the noise filter shown in FIG. 2 in the order of steps.

FIG. 7 is an explanatory diagram showing a state of an electrical inspection of the noise filter assembly.

FIG. 8 is an explanatory diagram of a use state of the connector with a noise filter according to the present embodiment.

FIG. 9 is a perspective view showing a modification of the present embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Connector with a noise filter 2 ... Connector body 3 ... 1st contact part 4 ... 2nd contact part
5 ... Connecting part 6,7 ... Electrode part 8 ... Conductor pattern 9 ... Noise filter

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-319279 (JP, A) JP-A-2-215213 (JP, A) JP-A-4-108209 (JP, A) JP-A-5-108 47600 (JP, A) JP-A-5-21953 (JP, A) Japanese Utility Model Application Laid-Open No. 63-41880 (JP, U) Japanese Utility Model Application No. 1-177873 (JP, U) Japanese Utility Model Application Laid-open No. 1-174867 (JP, U) Japanese Utility Model Hei 1-103274 (JP, U) Japanese Utility Model 56-108287 (JP, U) Japanese Utility Model 60-84075 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/719 H01R 12/06 H03H 7/01 H05K 1/14

Claims (2)

(57) [Claims] 1. A connector for electrically connecting a predetermined portion between substrates disposed substantially in parallel at a predetermined interval, wherein the first and second contacts are provided to face each other. A contact body made of an insulator, comprising: a contact portion; and a flexible connecting portion that connects the first and second contact portions so as to be able to approach and separate from each other. An electrode portion provided and protruding to the outside; and a conductive member extending along the contact body and electrically connecting the electrode portion of the first contact portion and the electrode portion of the second contact portion. A connector with a noise filter, comprising: a body; and a noise filter connected to the conductor. 2. The noise filter according to claim 1, further comprising: a dielectric member provided with two parallel spiral grooves; and a conductor member formed in said groove by injection under reduced pressure. 2. The connector with a noise filter according to 1.