JPH06325835A - Connector with noise eliminating device - Google Patents

Abstract

PURPOSE:To provide a connector with a noise eliminating device by which a noise signal is prevented from being transmitted to an external equipment via another connector connected to a contact. CONSTITUTION:A connector is provided with an insulating housing 2, in which plural contact insertion holes 5 are pierced from the front face to the back face, and plural contacts 3, in each of which a contact main body 3a is inserted and held in the contact insertion hole 5 and its lead part 3b is led out from the back face of the insulating housing 2. A ferrite member 10, in which plural through holes 11 matching with the contact insertion holes are arranged, is arranged on the front face side of the insulating housing 2. A resin film layer 12 is integrally formed on the front face of the ferrite member 10 and on the inside face of the through hole 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector with a noise eliminator in which a ferrite member is assembled as a countermeasure against noise that causes communication interference in electronic equipment and malfunction of equipment.

[0002]

2. Description of the Related Art Heretofore, as a measure for efficiently removing high frequency noise in an electronic device or the like, a connector in which ferrite members are assembled to lead portions of a plurality of contacts led out from the back surface of an insulating housing is known ( For example, JP-A-2-291686 and JP-A-4-291648
No. 101374).

[0003]

However, when the ferrite member is attached to the lead portion of the contact as in the conventional connector described above, the thin lead portion must be inserted into the through hole provided in the ferrite member. Not only is the mounting work complicated, but there is a problem that the lead portion is bent and the brittle ferrite member is easily cracked. Moreover, although the noise signal passing through the ferrite member is removed, there is a disadvantage that the noise signal picked up by the contact body is transmitted to an external device through another connector connected to the contact. Further, there is a problem that a space for arranging the ferrite member is required behind the connector, and the mounting area becomes large.

The present invention has been made for the purpose of solving the above-mentioned conventional problems.

[0005]

In order to achieve the above object, the present invention provides an insulating housing having a plurality of contact insertion holes penetrating from a front surface to a back surface thereof, and inserted and held in the contact insertion holes. A lead member having a plurality of contacts led out from the back surface of the insulating housing, a ferrite member having a plurality of through holes aligned with the contact insertion holes is provided on the front surface side of the insulating housing. It is characterized by being installed.

Since the dimensional accuracy of ferrite is low, the through hole provided in the ferrite member is formed to have a rough diameter so that the plug of the contact can be inserted with a margin, and the resin film layer is integrally formed on the front surface and the inner surface of the through hole. It is preferable to form the structure so as to secure the dimensional accuracy of the through hole and prevent damage such as cracking of the ferrite member. Further, instead of the resin film layer, a resin plate member having a plug insertion hole with high dimensional accuracy is provided on the front surface side of the ferrite member provided with a through hole having a rough hole diameter, which is aligned with the through hole. A structure may be adopted.

[0007]

With the above structure, the noise signal is removed by the ferrite member at the fitting portion of the contact, and there is no fear that the noise signal will be transmitted to another device through the mating connector of the mating connection.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an example in which the present invention is applied to a female connector. The female connector 1 is on the socket side of a so-called D-sub connector, and basically, as shown in FIG. 2, an insulating housing 2 and a plurality of socket contacts 3 are provided.
And a shield case 4.

The insulating housing 2 has a plurality of contact insertion holes 5 penetrating from the front surface to the back surface and provided in a plurality of rows (three rows in the illustrated example). Further, mounting holes 6 for mounting on a chassis or a panel are provided on both sides of the insulating housing 2.

The socket contact 3 is provided with a contact main body 3a which is inserted into and held in each contact insertion hole 5 and an insulating housing 2 which is connected to the rear end of the contact main body 3a.
And a lead portion 3b led out from the back surface of the insulating housing 2. The lead portion 3b extends downward along the back surface of the insulating housing 2 and is bent in the extension direction of the housing bottom surface to form a soldering portion 3c. A bent portion 3d is provided near the portion 3c. On the other hand, a plurality of position regulating recesses 8 are provided at a constant pitch on the bottom of the insulating block 7 fitted to the back of the insulating housing 2, and by engaging the protruding portions 3d with the recesses 8, The soldering portions 3c of the lead portions 3b are arranged at regular intervals and are soldered to the pattern of the printed wiring board 9.

Reference numeral 10 is a ferrite member arranged on the front surface of the insulating housing 2. The ferrite member 10 is formed in a flat plate shape having a plurality of through holes 11 aligned with the contact insertion holes 5, and the resin film layer 1 is formed on the front surface and the inner surface of the through holes 11.
2 is integrally molded. This is taken because ferrite is fragile in terms of material and has low dimensional accuracy, and the through hole 11 is inserted with a margin into which a plug (not shown) of the mating male connector to be fitted and connected to the socket contact 3 is inserted. The resin film layer 12 is integrally formed on the inner surface of the through hole 11 so that the plug can be positioned and finished to a dimensional accuracy that can be accurately inserted. The plug prevents the ferrite member 10 from directly contacting the ferrite member 10 and cracking or damage. The ferrite member 10 is held and fixed to the front surface of the insulating housing 2 by the shield case 4 when the shield case 4 is fitted into the insulating housing 2. Therefore, the noise signal picked up by the socket contact 3 is removed by the ferrite member 10 on the front surface side of the insulating housing 2.

3 and 4 show an example in which the present invention is applied to a male connector. The male connector 21 is a plug side corresponding to the socket side of the D-sub connector shown in FIGS. 1 and 2, and basically comprises an insulating housing 22, a plurality of plug contacts 23 and a shield case 24. There is.

The insulating housing 22 has a plurality of contact insertion holes 25 penetrating from the front surface to the back surface and provided in a plurality of rows (two rows in the illustrated example). Further, on both sides of the insulating housing 22, mounting holes 2 for mounting on a chassis or a panel are provided.
6 is provided.

The plug contact 23 is inserted into each contact insertion hole 25 and held therein.
And a lead portion 23b connected to the rear end of the contact body 23a and led out from the back surface of the insulating housing 2. The lead portion 23b extends downward along the back surface of the insulating housing 2 and extends the housing bottom surface. Is bent in the direction to form the soldering portion 23c, and the soldering portion 3c is formed.
A bent portion 23d is provided in the vicinity of. And
By engaging the bent portion 23d with the position regulating recess 28 provided on the back surface of the insulating housing 22, each lead portion 2
3b soldering portions 23c are arranged at regular intervals,
It is designed to be soldered to the pattern of the printed wiring board 9.

On the other hand, the ferrite member 30 arranged on the front surface side of the insulating housing 22 includes the contact bodies 23a.
Each of the ferrite members 30 is formed into a bead shape that is individually fitted to the plug of FIG. 1 and has a rough hole diameter through which the plug can be inserted with a margin. The bead-shaped ferrite member 30 is individually fitted into the plug portion of each contact body 23a, accommodated in the accommodating concave portion 29 provided on the front surface side of the insulating housing 22, and inserted into the plug portion. Resin holding plate 33 having holes 32
The shield case 24 is fitted to the insulating housing 22 in a state where the ferrite member 30 is attached to the contact 30a, and the ferrite member 30 is held and fixed by the shield case 24 via the pressing plate 33. Also in this case, the noise signal picked up by the plug contact 23 is not detected by the insulating housing 2.
It is removed by the ferrite member 30 on the front side of 2. The ferrite member 30 may be formed in a flat plate shape like the ferrite member 10 shown in FIGS. 1 and 2.

[0016]

As described above, according to the present invention,
Since the noise signal is removed at the front surface side of the insulating housing, that is, at the fitting portion of the contact, there is no possibility that the noise signal is transmitted to the external device through another connector fitted and connected to the contact.

Further, as compared with the prior art in which the ferrite member is mounted on the lead portion of the contact, not only the mounting work of the ferrite member is facilitated, but also the ferrite member is arranged behind the insulating housing. Since the space can be saved, the mounting area can be reduced and it is also suitable for high-density mounting.

[Brief description of drawings]

FIG. 1 is a front view showing an example in which the present invention is applied to a female connector.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a front view showing an example in which the present invention is applied to a male connector.

4 is a cross-sectional view taken along line 4-4 of FIG.

[Explanation of symbols]

 1 Female Connector 2 Insulating Housing 3 Socket Contact 3a Contact Body 3b Lead Part 3c Soldering Part 4 Shield Case 5 Contact Member 10 Ferrite Member 11 Through Hole 12 Resin Membrane Layer

Claims (3)

[Claims] 1. An insulating housing having a plurality of contact insertion holes penetrating from a front surface to a back surface thereof, and a plurality of lead portions inserted and held in the contact insertion hole and having lead portions thereof led out from the back surface of the insulating housing. A connector provided with a contact, wherein a ferrite member having a plurality of through holes aligned with the contact insertion holes is disposed on the front surface side of the insulating housing. 2. The contact is a socket contact, and a resin film layer is integrally formed on a front surface of the ferrite member and an inner surface of the through hole, and the resin film layer ensures dimensional accuracy of the through hole. A connector with a noise eliminator according to Item 1. 3. The contact is a plug contact, and a resin member having a plug insertion hole matching with the through hole is provided on the front surface of the ferrite member, and the ferrite member serves to insulate the ferrite member. The connector with a noise eliminator according to claim 1, which is fixedly held by the housing.