JPH11329609A - Male connector with sheet type noise filter and sheet type noise filter for male connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet type noise filter for a male connector with high reliability at low-cost. SOLUTION: In a sheet type noise filter F, capacitors 6 for noise rejection are installed on an elastically deformable thin insulation sheet 5. A plurality of holes 9 which connector pins 1 of a male connector pass through are formed, and a plurality of projecting pieces 10, which elastically come in contact with the inner surface of a shell 2 while being mounted on a recessed part 2a of the shell 2 of the male connector, are formed so as to protrude from an outer peripheral edge part. In the holes 9, a plurality of tongue pieces 11 which, when the connector pins 1 pass through, elastically bends to elastically come in contact with the connector pins 1. On each projecting piece 10 and tongue piece 11, a copper foil pattern 7 which ranges to the capacitor 6 and an insulation coat 8 which covers the copper foil pattern 7 excluding tip part are formed. On the copper foil patterns 7, exposed from the insulation coat 8, of the tip parts, a nickel coat layer 12 and a gold coat layer 13 are laminated and formed successively by plating technology.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a male connector with a sheet-type noise filter and a sheet-type noise filter for the male connector.

[0002]

2. Description of the Related Art As a prior art, a male connector having a plurality of connector pins for transmitting an electric signal to an electronic device and a metal shell located surrounding the connector pins and connected to a ground potential, In a connector device comprising a female connector having a plurality of holes for receiving connector pins in the male connector, a sheet-type noise filter provided with a noise removing circuit means for removing electromagnetic noise is replaced by a male connector. A technique for interposing a connector is known.

[0003]

However, as shown in FIG. 5, a conventional sheet-type noise filter provided with a noise removing circuit means 21 has a tongue 23 of a hole 22 of the noise filter and an outer periphery of the noise filter. On the projecting piece 24 of the portion, gold is vacuum-deposited directly on a copper foil pattern 26 formed on an insulating sheet 25 to form a gold-deposited layer 27. For this reason, there has been a problem that the manufacturing cost is increased.

As a method of forming a gold coating layer on the surface of the tongue piece 23 and the projection piece 24, a method using an expensive vacuum system such as vacuum evaporation or sputtering, and a method using a plating technique. There is a way. However, the film generated by vapor deposition or sputtering has a large adhesive force to the copper foil plate and can form a film having a uniform thickness, but the film forming speed is slow, and the temperature of the apparatus is sharply increased. It was difficult to freely control the processing conditions, such as the difficulty in reproducibility. In the plating technique, nickel plating is applied as a base for gold plating, and gold plating is applied on the nickel plating. The first reason is that the mutual diffusion coefficient between copper and gold is large, and the mutual diffusion coefficient between copper and nickel metal and between nickel and gold metal is small.
That is, when gold plating is directly applied to the copper foil plate, the gold plating film is very thin, so that gold diffuses into the copper of the copper foil plate due to aging and gold disappears from the surface.
The second reason is the problem of corrosion resistance. That is, copper is easily oxidized, and nickel is not easily oxidized as compared with copper. When the nickel-plated filter is elastically bent and brought into contact with the concave portion of the metal shell, a large bending stress is applied to the base of the tongue piece 23 and the projection piece 24 provided with the nickel coating layer. In addition, since the hard and brittle nickel coating layer cracks at the base portion, which may cause poor conduction and malfunction, there has been a problem of lack of reliability.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a nickel coating layer and a gold coating layer are formed only at the tip of the tongue piece and the projecting piece which come into contact with the connector pin and the metal shell, respectively. The layers are sequentially formed by plating.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A male connector with a sheet-type noise filter according to the present invention is a male connector having a plurality of connector pins and a metal shell positioned to surround the connector pins and connected to a ground potential. And a sheet-type noise filter that can be mounted by penetrating the connector pin into the recess of the shell. The sheet-type noise filter is provided with a noise removing circuit means on an elastically deformable thin insulating sheet, has a plurality of holes through which connector pins penetrate, and is mounted in the recess of the shell. In this state, a plurality of projecting pieces elastically abutting against the inner surface of the shell are formed so as to protrude from the outer peripheral edge. Each of the holes is provided with a plurality of tongues extending inwardly from the hole and resiliently bent when the connector pin passes through to elastically abut the connector pin. On each protruding piece and each tongue piece, a copper foil pattern connected to the circuit means and an insulating coating covering the copper foil pattern except for the tip portion are formed. A nickel coating layer and a gold coating layer are sequentially laminated on the copper foil pattern at each tip of the protruding piece and the tongue piece exposed from the insulating coating by a plating technique.

Preferably, the circuit means of the male connector with a sheet-type noise filter includes a capacitor for removing noise.

A sheet-type noise filter for a male connector according to the present invention is a shell-type male connector having a plurality of connector pins and a metal shell positioned to surround the connector pins and connected to a ground potential. The circuit means for noise removal is provided on a thin elastically deformable insulating sheet so that the connector pin can be inserted through the recessed portion. The insulating sheet has a plurality of holes through which the connector pins penetrate, and a plurality of protrusions that elastically abut the inner surface of the shell when mounted in the recesses of the shell are formed to protrude from the outer peripheral edge. , In each of the holes,
A plurality of tongues are provided which extend inwardly from the hole and elastically bend when the connector pin penetrates to elastically contact the connector pin. On each protrusion and each tongue,
A copper foil pattern connected to the circuit means and an insulating coating covering the copper foil pattern except for the tip portion are formed. A nickel coating layer and a gold coating layer are sequentially laminated on the copper foil pattern at each tip of the protruding piece and the tongue piece exposed from the insulating coating by a plating technique. Preferably, the circuit means of the sheet type noise filter for the male connector includes a noise removing capacitor.

[0009]

FIG. 4 shows a male connector C having a plurality of connector pins 1 and a metal shell 2 insulated from each other by an insulator R on the back of the OA equipment. The plurality of connector pins 1 are formed in a straight shape by protruding outward from the inside of the OA equipment main body (not shown), and a metal shell 2 connected to a ground potential is attached so as to surround the connector pins 1. It is formed integrally with the metal mounting plate 4 having the hole 3 and is fixed to the OA equipment main body C via the mounting hole 3 by a screw (not shown) or the like.

As shown in FIG. 1, the sheet-type noise filter F for a male connector has an outer shape that allows the connector pin 1 to be inserted into the recess 2a of the shell 2 and mounted. The sheet type noise filter F has a noise removing capacitor 6 as an example of a noise removing circuit means provided on an elastically deformable thin insulating sheet 5. That is, a copper foil pattern 7 and an insulating coating 8 such as an epoxy resin are sequentially laminated on a polyimide resin sheet which is a soft plastic sheet as an example of an elastically deformable thin insulating sheet 5. 7
A capacitor 6 for forming a filter circuit is fixed to the upper connection terminal portion 7a.

A plurality of holes 9 through which the connector pins 1 penetrate are provided inside the noise filter F, and a plurality of holes 9 elastically abutting on the inner surface of the shell 2 while being mounted in the concave portion 2a of the shell 2. The protruding piece 10 is formed so as to protrude from its outer peripheral edge. Each of the holes 9 has a plurality of tapered tongues extending inward from the holes 9 and elastically bent when the connector pins 1 pass through to elastically abut against the connector pins 1. A piece 11 is provided. Each tongue piece 11
Are formed in the hole 9 in a cross shape. As shown in FIG.
The diameter d of the connector pin 1 is larger than the distance between the tips of the tongue pieces 11 and smaller than the hole diameter D of the hole 9.

As shown in FIGS. 1 and 2, each protruding piece 10 and each tongue piece 11 have a copper foil pattern 7 connected to a circuit means (capacitor) 6 and a connection for connecting the tip and the capacitor 6. An insulating coating 8 covering the copper foil pattern 7 except for the terminal portions 7a is formed. The nickel coating layer 12 and the gold coating layer 1 are provided on the copper foil pattern 7 and the connection terminal portion 7a at the respective tips of the projecting piece 10 and the tongue piece 11 exposed from the insulating coating 8.
2 are sequentially formed by plating technique (FIG. 2).
reference). The capacitor 6 is electrically connected and fixed on the gold coating layer 13 of the connection terminal portion 7a.

As shown in FIG. 3, the connector pin 1 is inserted into the hole 9.
And the noise filter F is
When the tongue 11 is elastically bent, a gold coating layer 13 formed on the nickel coating layer 12 on the copper foil pattern 7 at the tip of the tongue is attached to the connector pin 1. It is elastically bent and abuts. Similarly, when the noise filter F is mounted in the concave portion 2 a of the shell 2, the gold coating layer 13 of the protruding piece 10 is elastically bent and abuts on the inner surface of the shell 2.

A large bending stress is applied to the roots of the protruding piece 10 and the tongue piece 11, but the copper foil pattern 7 and the insulating sheet 5 can be elastically deformed, and are elastically bent on the shell 2 and the connector pins 1 to contact. It has sufficient strength even when in contact. Since a large bending stress is not applied to each of the tips of the protruding piece 10 and the tongue piece 11 as compared with the roots, the nickel coating layer 12 can sufficiently withstand the strength even if provided. The male connector C may be supplied with a sheet noise filter F.

As described above, without depositing gold, the insulating coating 8
A nickel coating layer 12 is provided on the copper foil pattern 7 and the connection terminal portion 7a at the tips of the projecting piece 10 and the tongue piece 11 exposed from the
And the gold coating layer 13 are sequentially laminated by a plating technique.
In addition, the cost of the sheet-type noise filter F for the male connector can be reduced. Also, even if the projecting piece 10 and the tongue piece 11 are bent by mounting the sheet-type noise filter F through the connector pin 1 in the recess 2a of the shell 2, sufficient strength can be obtained.

[0016]

As described above, according to the present invention, a male connector with a sheet-type noise filter and a sheet-type noise filter for the male connector can be provided at low cost. Even if the protruding piece and the tongue piece are bent by mounting the connector pin through the recess, sufficient reliability can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2A is an enlarged plan view of a main part of FIG. 1,
(B) is a sectional view taken along line AA of (a).

FIG. 3 is a partial cross-sectional view showing a state where connector pins are passed through a sheet-type noise filter.

FIG. 4 is a perspective view showing a state where a male connector and a sheet noise filter are opposed to each other.

FIG. 5 is a plan view of a conventional sheet-type noise filter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Connector pin 2 Metal shell 2a Depression 5 Insulation sheet 6 Noise removal circuit means (capacitor) 7 Copper foil pattern 8 Insulation coating 9 Hole 10 Protrusion piece 11 Tongue piece 12 Nickel coating layer 13 Gold coating layer C Male connector F sheet Type noise filter

Claims (4)

[Claims] 1. A male connector having a plurality of connector pins and a metal shell positioned to surround the connector pins and connected to a ground potential, and wherein the connector pins are penetrated into recesses of the shell. A sheet-type noise filter that can be mounted, wherein the sheet-type noise filter is provided with a noise removing circuit means on an elastically deformable thin insulating sheet, and has a plurality of holes through which the connector pins penetrate. Are provided and a plurality of protruding pieces elastically abutting against the inner surface of the shell when mounted in the concave portion of the shell are formed so as to protrude from an outer peripheral edge portion. A plurality of tongues extending inward from the connector pin and elastically bent when the connector pin penetrates to elastically contact the connector pin; On the piece and each tongue piece, a copper foil pattern connected to the circuit means and an insulating coating covering the copper foil pattern except for the tip portion are formed, and the protruding piece exposed from the insulating coating. A male connector with a sheet-type noise filter, characterized in that a nickel coating layer and a gold coating layer are sequentially laminated on the copper foil pattern at each end of the tongue piece by a plating technique. 2. The male connector with a sheet-type noise filter according to claim 1, wherein said circuit means includes a noise removing capacitor. 3. A male connector having a plurality of connector pins and a metal shell positioned so as to surround the connector pins and connected to a ground potential. Preferably, the circuit means for removing noise is provided on a thin insulating sheet which can be elastically deformed, wherein the insulating sheet has a plurality of holes through which the connector pins penetrate, and the shell has a plurality of holes. A plurality of projecting pieces elastically abutting on the inner surface of the shell when mounted in the recess are formed so as to protrude from an outer peripheral edge, and each of the holes extends inward from the hole and A plurality of tongues are provided which are elastically bent when the connector pins penetrate and are elastically in contact with the connector pins. Each of the protrusions and the tongues is provided with a copper connected to the circuit means. A foil pattern and an insulating coating that covers the copper foil pattern except for the tip are formed, and the copper foil pattern at each tip of the projecting piece and the tongue piece exposed from the insulating coating is A sheet-type noise filter for a male connector, characterized in that a nickel coating layer and a gold coating layer are sequentially formed by plating. 4. A sheet type noise filter for a male connector according to claim 3, wherein said circuit means includes a noise removing capacitor.