WO2012140949A1

WO2012140949A1 - Connector

Info

Publication number: WO2012140949A1
Application number: PCT/JP2012/053427
Authority: WO
Inventors: 泰高口; 石垣　功
Original assignee: アルプス電気株式会社
Priority date: 2011-04-11
Filing date: 2012-02-14
Publication date: 2012-10-18
Also published as: JP2014132514A

Abstract

[Problem] To provide a connector with good EMC performance relative to connectors such as the connectors in the examples of the prior art, in which EMC performance varies by location etc. because, when a flat magnetic powder is used as a material for shielding electromagnetic waves by absorbing or reflecting the electromagnetic waves, the arrangement of flat magnetic powder is not constant. [Solution] This connector (101), which is provided with a substrate (19) on which conductor terminals (13) that electrically connect to pin conductor terminals of a mating connector, and conductor patterns (14) that electrically connect with the conductor terminals (13) are disposed, is characterized in that: the conductor terminals (13) are formed on a recessed recess section or a protruding protrusion section disposed on the substrate (19); the recess section or the protrusion section comprise a film-like or a plate-like magnetic sheet (15) comprising a composite resin containing a flat magnetic powder; and the flat magnetic powder is oriented in the in-plane direction of the magnetic sheet (15), and is preferentially oriented in the longitudinal direction of the conductor terminals (13).

Description

connector

The present invention relates to a connector for connecting various electronic devices or circuit boards, and more particularly to a connector capable of reducing unnecessary electromagnetic waves generated from various electronic devices.

As electromagnetic waves from communication devices and various electronic devices are radiated or transmitted to the outside, problems such as malfunctions of the devices themselves due to external and internal interference are increasing. In particular, with recent advances in communication technology and digital technology and higher signal speed, noise on the high frequency side has become a problem. As countermeasures against such malfunction due to generation, leakage, and mutual interference of unnecessary electromagnetic waves, a method of shielding a noise generation source or a method of inserting a noise filter or the like in a noise transmission line is taken. Recently, EMI (Electro Magnetic Interference) due to electromagnetic waves coming out of or entering a connector has become a problem, and EMC (Electro Magnetic Compatibility) performance has been demanded for the connector.

As a conventional technique for EMI countermeasures for connectors, Patent Document 1 proposes a connector 800 between electronic devices that can absorb leakage of unnecessary electromagnetic waves generated during signal transmission or communication, as shown in FIG. . A connector 800 shown in FIG. 12 includes a connector housing 802 provided at the tip of the connection cable 811 and connector pins 803 that are connected to a plurality of transmission lines (not shown) in the connection cable 811. ing. Then, the electromagnetic wave absorbing material 805 is applied to the outside of the connector housing 802 and solidified (conventional example shown in FIG. 12), the electromagnetic wave absorbing material 805 is filled in the connector housing 802, or the synthetic containing the electromagnetic wave absorbing material 805 is contained. It is said that a connector capable of efficiently absorbing unnecessary electromagnetic waves can be obtained by using a means of molding a resin material into the connector housing 802. In particular, as an electromagnetic wave absorber 805 having an electromagnetic wave absorption characteristic that absorbs electromagnetic field energy by utilizing characteristics such as heat conversion or reflection, a soft magnetic magnetic powder processed into a flat shape is used. In addition, it is said that a non-woven cloth type electromagnetic wave absorber “Emicloth” (trade name) manufactured by Mitsubishi Materials Corporation is suitable.

Moreover, as a type which does not have the connector housing 802 formed in the box shape of the conventional example 1 described above, in Patent Document 2, as shown in FIG. 13, a convex portion 922 in which a part of the base resin plate 920 is projected is provided. A connector 900 for forming a conductor pattern 924 to connect a printed wiring board and a wire harness has been proposed. Since the connector 900 of the conventional example 2 does not have the housing (connector housing 802) found in the conventional example 1, it is difficult to arrange the shield member. Therefore, the connector 900 has no shield measures.

JP 2000-13081 A JP-A-8-8001

When flat magnetic powder is used as a material that absorbs or reflects electromagnetic waves as in the case of Conventional Example 1, it is possible to align the orientation of magnetization by aligning the direction of the flat magnetic powder. It is generally known to be effective in improving performance. However, in the method as in Conventional Example 1, since the arrangement of the flat magnetic powder is not uniform or the arrangement of the flat magnetic powder is not uniform or difficult, the flat magnetic powder is not uniform. There was a problem that the magnetization orientation of the powder was not uniform. Therefore, there has been a problem that a connector with good EMC performance cannot be obtained, for example, EMC performance varies from place to place.

In the configuration as in Conventional Example 2, it is difficult to dispose the shield member, and it is necessary to take a method of inserting a new electronic component such as a noise filter in the noise transmission line.
The present invention solves the above-described problems, and an object thereof is to provide a connector with good EMC performance.

In order to solve this problem, a connector according to claim 1 of the present invention is provided with a conductor terminal electrically connected to a pin conductor terminal of a mating connector and a conductor pattern electrically connected to the conductor terminal. The conductor terminal is formed in a concave depression or a convex protrusion provided in the base, and the depression or the protrusion is a flat magnetic powder. The flat magnetic powder is oriented in the in-plane direction of the magnetic sheet and in the longitudinal direction of the conductor terminal. It is characterized by being preferentially oriented toward.

The connector according to claim 2 of the present invention is characterized in that the conductor terminals are provided on two opposing surfaces of the recess or the protrusion.

The connector according to claim 3 of the present invention is characterized in that the recess or the protrusion is formed by heating and softening the magnetic sheet to form the recess or the protrusion.

The connector according to claim 4 of the present invention is characterized in that the forming is vacuum forming in which the magnetic sheet is sucked from the mold side and the magnetic sheet is brought into close contact with the mold.

The connector according to claim 5 of the present invention is characterized in that the molding is performed by stacking the magnetic sheets.

The connector according to claim 6 of the present invention is characterized in that the resin of the magnetic sheet is made of a thermoplastic synthetic resin.

Further, the connector according to claim 7 of the present invention is characterized in that the magnetic loss magnetic loss of the magnetic material sheet is 15 or more in a frequency range of 20 Mhz to 1 Ghz.

According to the first aspect of the present invention, the connector of the present invention is a magnetic body preferentially oriented in the longitudinal direction of the conductor terminal in the concave depression or convex protrusion in which the conductor terminal is formed. Since the sheet has the flat magnetic powder, the direction of the magnetic field of the magnetic sheet can be preferentially aligned in the longitudinal direction of the conductor terminal. Thereby, the electromagnetic wave which comes out of a conductor terminal or enters into a conductor terminal can be shielded with a magnetic material sheet, and a connector with good EMC performance can be provided.

According to the invention of claim 2, since the connector of the present invention is provided with the conductor terminals on the two opposing faces of the recess or the protrusion having the magnetic sheet containing the flat magnetic powder, The magnetic material sheet is arranged along the conductor terminal. Thereby, the electromagnetic wave which comes out of the conductor terminal of both sides, or enters the conductor terminal can be shielded more by the magnetic material sheet | seat arrange | positioned along, and a connector with better EMC performance can be provided.

According to the invention of claim 3, since the connector of the present invention is formed by heating and softening the magnetic sheet to form a recess or a protrusion, the magnetic body that shields electromagnetic waves that exit from or enter the conductor terminal A sheet | seat can be easily arrange | positioned so that it may extend preferentially and along a conductor terminal in the longitudinal direction of a conductor terminal. This makes it possible to easily shield electromagnetic waves that exit from the conductor terminals or enter the conductor terminals, and provide a connector with better EMC performance.

According to the invention of claim 4, since the magnetic sheet is formed by vacuum forming the connector according to the present invention to form a recess or protrusion, it is possible to obtain a portion or protrusion with good dimensional accuracy. For this reason, the orientation of the flat magnetic powder with magnetization of the magnetic sheet can be made better with respect to the conductor terminal, and the electromagnetic wave absorption characteristics for absorbing electromagnetic waves can be stabilized. Thereby, the electromagnetic wave which comes out of a conductor terminal or enters into a conductor terminal can be further shielded with a magnetic material sheet, and a connector with much better EMC performance can be provided.

According to the fifth aspect of the present invention, the connector of the present invention is formed by stacking the magnetic sheets to form the depressions or protrusions, so that the magnetic sheet that shields electromagnetic waves coming out of the conductor terminals or entering the conductor terminals can be obtained. It is possible to easily increase the thickness and arrange the magnetic material sheet along the conductor terminal. Thereby, the electromagnetic wave which comes out of a conductor terminal or enters into a conductor terminal can be further shielded with a magnetic material sheet, and a connector with much better EMC performance can be provided.

According to the invention of claim 6, in the connector according to the present invention, since the magnetic sheet is formed of a thermoplastic synthetic resin, the magnetic sheet is molded by heating and softening, and the recess or the protrusion is easily formed. Can be molded. As a result, the manufacturing cost of a connector with better EMC performance can be reduced.

According to the invention of claim 7, the connector of the present invention has a magnetic sheet magnetic loss magnetic loss of 15 or more in the frequency range of 20 Mhz to 1 Ghz. It is possible to shield electromagnetic waves (noise) on the high frequency side, which is a problem in equipment. Thus, it can be suitably used for a connector of a communication device or various electronic devices that handle high-frequency signals.
Therefore, the connector of the present invention can provide a connector with good EMC performance.

It is a perspective view explaining the connector of a 1st embodiment of the present invention. It is a block diagram explaining the connector of 1st Embodiment of this invention, Comprising: It is a top view of the connector seen from the Z1 side shown in FIG. It is a block diagram explaining the connector of 1st Embodiment of this invention, Comprising: It is the side view of the connector seen from the Y2 side shown in FIG. 4A and 4B are configuration diagrams illustrating the connector according to the first embodiment of the present invention, in which FIG. 4A is a schematic cross-sectional view of a P portion magnetic material sheet shown in FIG. 3, and FIG. It is an example of the cross-sectional SEM photograph of a body sheet. It is a cross-sectional SEM photograph compared with the cross-sectional SEM photograph of the magnetic body sheet | seat shown in FIG.4 (b), Comprising: It is an example by which flat magnetic powder is not orientated in the surface direction of a sheet | seat. It is the graph which showed the frequency characteristic of the magnetic susceptibility magnetic loss of the magnetic material sheet used for the connector of a 1st embodiment of the present invention. It is a perspective view explaining the connector of a 2nd embodiment of the present invention. It is a block diagram explaining the connector of 2nd Embodiment of this invention, Comprising: It is a top view of the connector seen from the Z1 side shown in FIG. It is a block diagram explaining the connector of 2nd Embodiment of this invention, Comprising: It is the side view of the connector seen from the Y2 side shown in FIG. FIG. 10A is a diagram for explaining a modification of the connector according to the first embodiment of the present invention, and FIG. 10A is a side view of Modification 1 compared with the side view shown in FIG. 3, and FIG. These are the side views of the modification 2 compared with the side view shown in FIG. FIG. 11A is a diagram for explaining a modification of the connector according to the first embodiment of the present invention, and FIG. 11A is a side view of Modification 3 compared with the side view shown in FIG. 3, and FIG. These are the side views of the modification 4 compared with the side view shown in FIG. It is a schematic perspective view explaining the connector in the prior art example 1. It is a schematic perspective view explaining the connector in the prior art example 2.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[First Embodiment]
FIG. 1 is a perspective view illustrating a connector 101 according to a first embodiment of the present invention. FIG. 2 is a configuration diagram illustrating the connector 101 according to the first embodiment of the present invention, and is a top view of the connector 101 viewed from the Z1 side shown in FIG. In FIG. 2, the conductor pattern 14 is not hatched but is hatched for easy explanation. FIG. 3 is a configuration diagram illustrating the connector 101 according to the first embodiment of the present invention, and is a side view of the connector 101 viewed from the Y2 side shown in FIG. FIG. 4 is a configuration diagram illustrating the connector 101 according to the first embodiment of the present invention, and FIG. 4A is a schematic cross-sectional view of the magnetic sheet 15 in the Q portion shown in FIG. (B) is an example of a cross-sectional SEM photograph of the magnetic sheet 15. FIG. 5 is a cross-sectional SEM photograph compared with the cross-sectional SEM photograph of the magnetic sheet 15 shown in FIG. 4B, and is an example in which the flat magnetic powder M5 is not oriented in the in-plane direction PD of the sheet.

As shown in FIGS. 1 to 3, the connector 101 of the first embodiment of the present invention includes a conductor terminal 13 that is electrically connected to a pin conductor terminal 513 (shown by a broken line in FIG. 3) of the mating connector 501, A base 19 provided with a conductor pattern 14 electrically connected to the conductor terminal 13 is provided.

As shown in FIGS. 1 and 3, the conductor terminal 13 is formed on the outer edge of the convex protruding portion T9 provided on the base 19, and the conductor terminals 13 are respectively formed on the outer sides of the two opposing surfaces of the protruding portion T9. Are provided, and each conductor terminal 13 is electrically connected to the conductor pattern 14. The conductor terminal 13 and the conductor pattern 14 are formed on the base 19 at the same time, and can be obtained, for example, by plating with a material such as copper using photolithography.

The base 19 is composed of a plate-like magnetic sheet 15 made of a synthetic resin material containing magnetic powder, and the magnetic sheet 15 is heated and softened to form the protruding portion T9. Before forming the protruding portion T9, the conductor terminal 13 and the conductor pattern 14 are formed on the magnetic material sheet 15 (base 19) in advance. For this reason, since the protrusion part T9 was formed with the magnetic material sheet 15, the magnetic material sheet 15 can be preferentially arrange | positioned toward the longitudinal direction of the conductor terminal 13 shape | molded by the protrusion part T9. Moreover, since the magnetic material sheet 15 was heated and softened to form the protruding portion T9, the protruding portion T9 of the magnetic material sheet 15 can be easily manufactured.

As shown in FIG. 3, when the mating connector 501 is fitted to the connector 101, the two opposing conductor terminals 13 of the projecting portion T <b> 9 abut against the pin conductor terminal 513 of the mating connector 501. Electrically connected. Further, as shown in FIGS. 1 and 3, the protruding portion T9 formed of the magnetic sheet 15 is formed so that the two opposing surfaces are substantially parallel to each other, and the protruding direction of the protruding portion T9 is The six conductor terminals 13 are formed in the same direction as the longitudinal direction. In addition, although the conductor terminal 13 of the connector 101 of 1st Embodiment of this invention is formed in three places on the single side | surface of the protrusion part T9, and both surfaces are six pieces, it is not restricted to six pieces.

As shown in FIG. 4, the magnetic sheet 15 is composed of a synthetic resin P5 such as ABS (acrylonitrile butadiene styrene) or PP (polypropylene), and a flat magnetic powder M5. Further, the magnetic sheet 15 has a plurality of flat magnetic powders M5 in a matrix of the synthetic resin P5 such that the longitudinal direction of the flat magnetic powder M5 is aligned with a desired direction in the in-plane direction PD of the magnetic sheet 15. Are aligned so as to be aligned. The orientation HD as used herein refers to a state in which the average inclination angle of the plurality of flat magnetic powders M5 is 45 ° or less, preferably 10 ° or less with respect to the in-plane direction PD of the magnetic sheet 15. ing. When the inclination angle of the plurality of flat magnetic powders M5 shown in FIG. 5 is the direction ND having an angle of 45 ° or more, the longitudinal direction of the flat magnetic powder M5 is a plurality of in-plane directions PD of the magnetic sheet 15. It cannot be said that the flat magnetic powder M5 is oriented HD so as to be arranged.

In this way, the magnetizations of the plurality of flat magnetic powders M5 are oriented in a desired direction in the in-plane direction PD of the magnetic sheet 15, and the direction of the magnetic field of the magnetic sheet 15 is aligned in the desired direction. It becomes like this. As a result, characteristics such as thermal conversion or reflection of electromagnetic field energy are improved, and the performance of shielding electromagnetic waves (noise) is improved.

The plurality of flat magnetic powders M5 are arranged so that the magnetic sheet 15 forming the protruding portion T9 is substantially parallel to the longitudinal direction of the six conductor terminals 13. The longitudinal direction of the flat magnetic powder M5 is substantially parallel to the longitudinal direction of the six conductor terminals 13 with respect to the six conductor terminals 13 respectively disposed on the outside of the protrusion T9. They are aligned and oriented. Accordingly, the magnetic field of the magnetic sheet 15 can be preferentially aligned in the longitudinal direction of the conductor terminal 13, so that the electromagnetic wave emitted from the conductor terminal 13 or entering the conductor terminal 13 is transmitted by the magnetic sheet 15. Can be shielded.

Thus, since the magnetic material sheet 15 in which the longitudinal direction of the flat magnetic powder M5 is aligned in a desired direction in the in-plane direction PD of the magnetic material sheet 15 is used as the protruding portion T9, Conventional Example 1 is adopted. Compared with the method of applying and solidifying the electromagnetic wave absorbing material 805, the direction of the magnetic field of the magnetic material sheet 15 can be easily preferentially aligned in the longitudinal direction of the conductor terminal 13. Even if it is difficult to place a shield member as in Conventional Example 2, the magnetic sheet 15 can be placed with respect to the conductor terminal 13.

In addition, since the conductor terminals 13 are provided on the two opposing surfaces of the projecting portion T9 formed of the magnetic sheet 15 containing the flat magnetic powder M5, the magnetic sheet 15 is provided with respect to the conductor terminals 13 on both sides. Is arranged along. As a result, the electromagnetic waves coming out of the conductor terminals 13 on both sides or entering the conductor terminals 13 can be further shielded by the magnetic sheet 15 disposed along the conductor terminals, and the connector 101 with better EMC performance can be provided.

Further, as shown in FIG. 3, when the mating connector 501 is fitted to the connector 101, the pin conductor terminals 513 of the mating connector 501 are disposed so as to sandwich the two opposing surfaces of the protruding portion T9. The magnetic material sheet 15 is arranged along the pin conductor terminals 513 on both sides. Thus, the electromagnetic wave that exits from the pin conductor terminals 513 on both sides or enters the pin conductor terminals 513 can be shielded by the magnetic sheet 15 arranged along the lines, and the connector 101 with even better EMC performance can be provided. .

Further, in the Q portion, R portion and S portion shown in FIG. 3, the wiring direction of the conductor pattern 14 and the in-plane direction PD of the magnetic material sheet 15 are substantially parallel to each other. The plurality of flat magnetic powders M5 of the body sheet 15 are arranged and oriented so that the longitudinal directions thereof are substantially parallel. As a result, the electromagnetic wave coming out of the conductor pattern 14 or entering the conductor pattern 14 can be shielded by the magnetic sheet 15 arranged substantially in parallel, and the connector 101 with better EMC performance can be provided.

As shown in FIG. 3, the connector 101 according to the first embodiment of the present invention is obtained by attaching a wiring pattern (not shown) on one side of the printed wiring board 401 and the conductor pattern 14 by soldering HD. It is fixed to. Further, the protruding portion T9 is inserted into the hole provided in the printed wiring board 401 so as to be connected to the mating connector 501. Although not shown, the printed wiring board 401 is provided with a locking structure for locking the mating connector 501 with the mating connector 501 when the mating connector 501 is fitted to the connector 101.

Next, the manufacturing method of the connector 101 of 1st Embodiment of this invention is demonstrated.
Initially, the manufacturing method of the magnetic material sheet 15 is demonstrated. First, a magnetic powder is prepared by a water atomization method using a material containing iron as a main component, for example, permalloy (Fe—Ni alloy). In addition, it is not limited to the water atomizing method, You may use the gas atomizing method, the liquid quenching method etc. which grind | pulverize and pulverize the ribbon rapidly cooled from the said alloy molten metal. Moreover, about the process conditions of the water atomizing method, the gas atomizing method, and the liquid quenching method, the conditions normally performed according to the kind of raw material can be used. Then, after classifying the obtained magnetic powder to make the particle size uniform, the magnetic powder is processed into a flat shape using an apparatus such as a planetary stirring ball mill. If necessary, the flat magnetic powder M5 processed into a flat shape may be annealed for the purpose of relaxing internal stress.

Next, a mixed liquid (slurry) comprising the synthetic resin P5 constituting the magnetic sheet 15 and the flat magnetic powder M5 is supplied to the doctor blade device, and the base material (carrier tape) is drawn, The mixed solution is applied to the substrate with a predetermined thickness by a blade. And the magnetic material sheet 15 comprised from the synthetic resin P5 and the flat magnetic powder M5 on a base material is obtained by heating. The magnetic sheet 15 may be used together with the base material. However, the magnetic material sheet 15 is applied to the connector 101 according to the first embodiment of the present invention by removing the base material for ease of processing. did.

FIG. 6 is a graph showing the frequency characteristics of the magnetic susceptibility magnetic loss μ ″ of the magnetic material sheet 15 used in the connector 101 of the first embodiment of the present invention. The frequency is shown on the horizontal axis. The measurement was performed by placing the magnetic sheet 15 on a printed wiring board (PCB) provided with a microstrip line and detecting the input value and output value of the signal with a network analyzer.

As shown in FIG. 6, the magnetic loss magnetic loss μ ″ of the magnetic sheet 15 is 15 or more in the frequency range of 20 Mhz to 1 Ghz. The larger this magnetic modulus magnetic loss μ ″, the higher the electromagnetic field energy. Is efficiently converted into heat, and as a result, electromagnetic wave absorption characteristics for absorbing electromagnetic waves are enhanced. For this reason, the magnetic material sheet 15 can shield the electromagnetic waves (noise) on the high frequency side, which is a problem in communication devices and various electronic devices that handle high frequency signals. Accordingly, the connector 101 according to the first embodiment of the present invention can be suitably used for a connector of a communication device or various electronic devices that handle a high-frequency signal.

Next, a method for manufacturing the connector 101 will be described. First, a plating film such as copper is formed on the entire surface of one side of the magnetic sheet 15 (base 19) by electroless plating or electrolytic plating. Next, a resist layer having a pattern of the conductor terminals 13 and the conductor pattern 14 is formed on the plating film, and the plating film is etched using the patterned resist layer as a mask. Thereafter, by removing the resist layer remaining on the plating film, the magnetic sheet 15 in which the conductor terminals 13 and the conductor patterns 14 are formed on one side of the magnetic sheet 15 is obtained.

Next, the magnetic sheet 15 is softened by heating and bent to form a U-shape to produce a protrusion T9. Accordingly, the magnetic sheet 15 that shields the electromagnetic wave that exits from the conductor terminal 13 or enters the conductor terminal 13 is easily disposed preferentially along the conductor terminal 13 in the longitudinal direction of the conductor terminal 13. Can do.

Furthermore, the molding uses a vacuum molding method in which the magnetic sheet 15 is sucked from the bending mold side and the magnetic sheet 15 is brought into close contact with the mold. As a result, the protrusion T9 with good dimensional accuracy can be obtained, so that the electromagnetic wave absorption characteristics for absorbing electromagnetic waves in the protrusion T9 formed of the magnetic sheet 15 can be stabilized.

Further, since the magnetic sheet 15 is formed from a thermoplastic synthetic resin P5 such as ABS (acrylonitrile butadiene styrene) or PP (polypropylene), the magnetic sheet 15 is heated and softened to form the protrusion T9. Can be easily formed. As a result, the manufacturing cost of the connector 101 with better EMC performance can be reduced.

As described above, the connector 101 of the present invention is a flat magnetic powder of the magnetic sheet 15 that is preferentially oriented in the longitudinal direction of the conductor terminal 13 on the convex protrusion T9 on which the conductor terminal 13 is formed. Since it has M5, the direction of the magnetic field of the magnetic sheet 15 can be preferentially aligned in the longitudinal direction of the conductor terminal 13. As a result, the electromagnetic wave that exits from the conductor terminal 13 or enters the conductor terminal 13 can be shielded by the magnetic sheet 15, and a connector with good EMC performance can be provided.

In addition, since the conductor terminals 13 are provided on the two opposing surfaces of the projecting portion T9 formed of the magnetic sheet 15 containing the flat magnetic powder M5, the magnetic sheet 15 is provided with respect to the conductor terminals 13 on both sides. Is arranged along. Thereby, the electromagnetic wave which comes out of the conductor terminal 13 of both sides, or enters the conductor terminal 13 can be shielded more by the magnetic material sheet 15 arrange | positioned along, and a connector with better EMC performance can be provided.

Further, the magnetic material sheet 15 is heated and softened and bent to form a U-shaped projection T9, so that the electromagnetic wave coming out of the conductor terminal 13 or entering the conductor terminal 13 is shielded. The magnetic sheet 15 can be easily disposed preferentially in the longitudinal direction of the conductor terminal 13 and along the conductor terminal 13. This makes it possible to easily shield electromagnetic waves coming out of the conductor terminals 13 or entering the conductor terminals 13 and provide a connector with better EMC performance.

Furthermore, the molding uses a vacuum molding method in which the magnetic sheet 15 is sucked from the bending mold side and the magnetic sheet 15 is brought into close contact with the mold, so that the projection T9 with high dimensional accuracy is used. Can be obtained. For this reason, the orientation of the flat magnetic powder M5 with magnetization of the magnetic sheet 15 can be made better with respect to the conductor terminal 13, and the electromagnetic wave absorption characteristics for absorbing electromagnetic waves at the protruding portion T9 can be stabilized. it can. As a result, the electromagnetic wave coming out of the conductor terminal 13 or entering the conductor terminal 13 can be further shielded by the magnetic sheet 15, and a connector with better EMC performance can be provided.

Further, since the magnetic sheet 15 is formed from a thermoplastic synthetic resin P5 such as ABS (acrylonitrile butadiene styrene) or PP (polypropylene), the magnetic sheet 15 is heated and softened to form the protrusion T9. Can be easily formed. As a result, the manufacturing cost of a connector with better EMC performance can be reduced.

Further, the magnetic loss magnetic loss μ ″ of the magnetic material sheet 15 is 15 or more in the frequency range from 20 Mhz to 1 Ghz. Therefore, high-frequency electromagnetic waves (which are problematic in communication devices and various electronic devices that handle high-frequency signals) Therefore, it can be suitably used for connectors of communication devices that handle high-frequency signals and various electronic devices.

[Second Embodiment]
FIG. 7 is a perspective view illustrating the connector 102 according to the second embodiment of the present invention. FIG. 8 is a configuration diagram illustrating the connector 102 according to the second embodiment of the present invention, and is a top view of the connector 102 viewed from the Z1 side shown in FIG. In FIG. 8, in order to facilitate the explanation, the conductor pattern 24 is hatched although it is not a cross section. FIG. 9 is a configuration diagram illustrating the connector 102 according to the second embodiment of the present invention, and is a side view of the connector 102 viewed from the Y2 side shown in FIG. The connector 102 according to the second embodiment is different from the first embodiment in that a concave recess R9 is provided in the base 29. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

The connector 102 according to the second embodiment of the present invention includes a conductor terminal 23 electrically connected to a pin conductor terminal 523 (shown by a broken line in FIG. 9) of the mating connector 502, as shown in FIGS. A base 29 having a conductor pattern 24 electrically connected to the conductor terminal 23 is provided.

As shown in FIGS. 7 and 9, the conductor terminal 23 is formed on the inner edge of the concave recess R9 provided in the base 29, and the conductor terminal 23 is respectively located inside the two opposing surfaces of the recess R9. Each conductor terminal 23 is electrically connected to the conductor pattern 24. The conductor terminal 23 and the conductor pattern 24 are formed on the base 29 at the same time, and can be obtained, for example, by plating with a material such as copper using photolithography.

The substrate 29 is composed of a magnetic sheet 25 made of a synthetic resin material containing magnetic powder, and the magnetic sheet 25 is heated and softened to form the recess R9. Before forming the recess R9, the conductor terminal 23 and the conductor pattern 24 are previously formed on the magnetic sheet 25 (base 29). For this reason, since hollow part R9 was formed with the magnetic material sheet 25, the magnetic material sheet 25 can be preferentially arrange | positioned toward the longitudinal direction of the conductor terminal 23 shape | molded by the hollow part R9. Moreover, since the magnetic material sheet 25 was heat-softened and the hollow part R9 was shape | molded, the hollow part R9 of the magnetic material sheet 25 can be produced easily.

As shown in FIG. 9, when the mating connector 502 is fitted into the connector 102, the two opposing conductor terminals 23 of the recess R <b> 9 abut against the pin conductor terminal 523 of the mating connector 502. Electrically connected. As shown in FIGS. 7 and 9, the recess R9 formed by the magnetic sheet 25 is formed so that the two opposing surfaces are substantially parallel to each other. The conductor terminals 23 are formed so that their longitudinal directions are in the same direction (the U portion and the V portion in FIG. 9). In addition, the conductor terminal 23 of the connector 102 of 2nd Embodiment of this invention is formed in two places on the single side | surface of the hollow part R9, and it is four in total on both surfaces, but it is not restricted to four.

The magnetic sheet 25 is composed of a synthetic resin P5 such as ABS (acrylonitrile butadiene styrene) or PP (polypropylene) and a flat magnetic powder M5, similarly to the magnetic sheet 15 of the first embodiment shown in FIG. The Similarly to the magnetic sheet 15, the magnetic sheet 25 has a shape in which the longitudinal direction of the flat magnetic powder M <b> 5 is aligned with a desired direction in the in-plane direction PD of the magnetic sheet 25 in the matrix of the synthetic resin P <b> 5. Thus, the plurality of flat magnetic powders M5 are oriented so as to be arranged.

The plurality of flat magnetic powders M5 are arranged so that the magnetic sheet 25 forming the recess R9 is substantially parallel to the longitudinal direction of the four conductor terminals 23. The longitudinal direction of the flat magnetic powder M5 is substantially parallel to the longitudinal direction of the four conductor terminals 23 with respect to the four conductor terminals 23 respectively disposed inside the recess R9. They are aligned and oriented. As a result, the direction of the magnetic field of the magnetic material sheet 25 can be preferentially aligned in the longitudinal direction of the conductor terminal 23, so that the electromagnetic wave emitted from the conductor terminal 23 or entering the conductor terminal 23 is Can be shielded.

Thus, since the magnetic material sheet 25 in which the longitudinal direction of the flat magnetic powder M5 is aligned in a desired direction in the in-plane direction PD of the magnetic material sheet 25 is adopted as the recess portion R9, Conventional Example 1 is adopted. Compared with the method of applying and solidifying the electromagnetic wave absorbing material 805 as described above, the direction of the magnetic field of the magnetic sheet 25 can be easily preferentially aligned in the longitudinal direction of the conductor terminal 23.

Moreover, since the conductor terminal 23 is provided in two surfaces which the hollow part R9 formed of the magnetic material sheet 25 containing the flat magnetic powder M5 opposes, the magnetic material sheet 25 is provided with respect to the conductor terminals 23 on both sides. Is arranged along. As a result, the electromagnetic wave coming out of the conductor terminals 23 on both sides or entering the conductor terminals 23 can be further shielded by the magnetic sheet 25 arranged along the conductor terminals, and the connector 102 with better EMC performance can be provided.

As shown in FIG. 9, the connector 102 according to the second embodiment of the present invention is obtained by attaching a wiring pattern (not shown) on one side of the printed wiring board 402 and the conductor pattern 24 by soldering HD. It is fixed to. Further, the opening side of the recess R9 is opposed to the hole provided in the printed wiring board 402 so as to be connected to the mating connector 502. Although not shown, the printed wiring board 402 is provided with a locking structure for locking the mating connector 502 with the mating connector 502 when the mating connector 502 is fitted to the connector 102.

As described above, in the connector 102 of the present invention, the flat magnetic powder M5 of the magnetic sheet 25 that is preferentially oriented in the longitudinal direction of the conductor terminal 23 in the concave recess R9 in which the conductor terminal 23 is formed. Therefore, the direction of the magnetic field of the magnetic material sheet 25 can be preferentially aligned in the longitudinal direction of the conductor terminal 23. As a result, the electromagnetic wave coming out of the conductor terminal 23 or entering the conductor terminal 23 can be shielded by the magnetic sheet 25, and a connector with good EMC performance can be provided.

Moreover, since the conductor terminal 23 is provided in two surfaces which the hollow part R9 formed of the magnetic material sheet 25 containing the flat magnetic powder M5 opposes, the magnetic material sheet 25 is provided with respect to the conductor terminals 23 on both sides. Is arranged along. Thereby, the electromagnetic wave which comes out of the conductor terminal 23 of both sides, or enters the conductor terminal 23 can be shielded more by the magnetic material sheet 25 arranged along, and a connector with better EMC performance can be provided.

It should be noted that the present invention is not limited to the above-described embodiment, and can be implemented by being modified as follows, for example, and these embodiments also belong to the technical scope of the present invention.

FIG. 10 is a diagram for explaining a modification of the connector 101 according to the first embodiment of the present invention. FIG. 10 (a) is a side view of Modification 1 compared with the side view shown in FIG. FIG.10 (b) is a side view of the modification 2 compared with the side view shown in FIG. FIG. 11 is a diagram for explaining a modification of the connector 101 according to the first embodiment of the present invention. FIG. 11A is a side view of the modification 3 compared with the side view shown in FIG. FIG.11 (b) is a side view of the modification 4 compared with the side view shown in FIG.

<Modification 1>
In the first embodiment, the plate-like magnetic sheet 15 is used as the base 19 and the magnetic sheet 15 is heated and softened to form the protruding portion T9. However, as shown in FIG. In addition, a plate-like magnetic material sheet C15 may be provided only on the protruding portion TC19. Similarly, the present invention can also be applied to the hollow portion R9 of the second embodiment, and a plate-like magnetic material sheet may be provided only in the hollow portion.

<Modification 2>
In the first embodiment, the plate-like magnetic sheet 15 is used as the base 19 and the magnetic sheet 15 is heated and softened to form the protruding portion T9. However, as shown in FIG. The film-like magnetic sheet C25 is heated and softened to form a convex protrusion TC29, which is adhered to the base C29 having the same convex shape. An integrated configuration may be used. Similarly, the present invention can also be applied to the recess R9 of the second embodiment. The film-like magnetic sheet is heated and softened to form a concave recess, and is bonded to a substrate having the same concave shape. An integrated configuration may be used.

<Modification 3>
In the first embodiment, the magnetic sheet 15 (base 19) on which the conductor terminals 13 and the conductor patterns 14 are formed is used. However, as shown in FIG. 11A, the conductor terminals 13 and the conductor patterns are formed. A flexible wiring board (FPC) FC3 is formed on the magnetic sheet C35 (base 19) obtained by forming a convex protrusion TC39 by heating and softening the magnetic sheet C35. It is also possible to adopt a configuration in which these are bonded and integrated. Similarly, the present invention can also be applied to the recess R9 of the second embodiment, and a flexible wiring board (FPC) is bonded and integrated to a magnetic sheet formed by heating and softening a magnetic sheet to form a concave recess. You may make it the structure made to.

<Modification 4>
In the first embodiment, a convex bending process is performed on one magnetic sheet 15, but as shown in FIG. 11B, the bending process is performed by stacking a plurality of magnetic sheets C45. It may be the process. In addition, although the magnetic material sheet C45 shown in FIG.11 (b) is three sheets, it is not restricted to three sheets. According to this, since a plurality of magnetic sheets C45 are processed to form the protruding portion TC49, the thickness of the magnetic sheet C45 that shields electromagnetic waves that exit from the conductor terminals 13 or enter the conductor terminals 13 is easily increased. The magnetic sheet C45 can be arranged along the conductor terminal 13. As a result, the electromagnetic wave coming out of the conductor terminal 13 or entering the conductor terminal 13 can be further shielded by the magnetic sheet C45, and the connector C04 with better EMC performance can be provided.

Also in the second embodiment, the concave bending may be formed by a process in which a plurality of magnetic sheets are stacked and the same effects as described above can be obtained.

<Modification 5>
In the above-described embodiment, the conductor terminal (13 or 23) and the conductor pattern (14 or 24) are previously formed on the magnetic sheet (15 or 25) before the convex or concave bending process. However, after the convex or concave bending process, the step of forming the conductor terminal and the conductor pattern on the magnetic sheet may be used.

The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the scope of the object of the present invention.

13, 23

Conductor terminal

14, 24

Conductor pattern

15, 25, C15, C25, C35, C45 Magnetic sheet R9 Recessed

part

19, 29, C29 Base body T9, TC19, TC29, TC39 Protruding part M5 Flat magnetic powder P5 Synthetic resin PD In-plane direction μ ”Magnetic susceptibility magnetic loss 501

Mating connector

513, 523

Pin conductor terminal

101, 102, C04 connector

Claims

In a connector configured to include a conductor terminal electrically connected to the pin terminal of the mating connector, and a base provided with a conductor pattern electrically connected to the conductor terminal,
The conductor terminal is formed in a concave depression or a convex protrusion provided on the base,
The recess or the protrusion has a film-like or plate-like magnetic sheet made of a synthetic resin containing flat magnetic powder,
The flat magnetic powder is oriented in an in-plane direction of the magnetic sheet and preferentially oriented in a longitudinal direction of the conductor terminal.
The connector according to claim 1, wherein the conductor terminals are provided on two opposing surfaces of the recess or the protrusion.
3. The connector according to claim 2, wherein the recess or the protrusion is formed by heating and softening the magnetic sheet to form the recess or the protrusion.
4. The connector according to claim 3, wherein the molding is vacuum molding performed by sucking the magnetic sheet from a mold side and bringing the magnetic sheet into close contact with the mold.
4. The connector according to claim 3, wherein the forming is performed by stacking the magnetic sheets.
The connector according to claim 4, wherein the forming is performed by stacking the magnetic sheets.
4. The connector according to claim 3, wherein the resin of the magnetic sheet is made of a thermoplastic synthetic resin.
The connector according to claim 1, wherein the magnetic loss magnetic loss of the magnetic sheet is 15 or more in a frequency range of 20 Mhz to 1 Ghz.