JP5145993B2 - connector - Google Patents

Description

  The present invention relates to a connector, and more particularly to a connector for connecting an information device and a signal cable connected to the information device.

  For information devices such as personal computers, standards are established for regulating jamming radio waves such as VCCI (Voluntary Control Council for Information Technology Equipment) regulations. For this reason, electronic devices including information devices are designed such that the generated radio waves are below a reference value determined by VCCI.

  One of the countermeasures against radio waves / static electricity for clearing VCCI regulations is to add a common mode choke coil having a function of removing common mode noise. Normally, the common mode choke coil needs to be mounted on a signal propagation path on a printed circuit board where noise may propagate.

  For example, in order to prevent noise that is conducted through the communication line and enters the device from the outside, or conducted and radiated from the device to the communication line, a multi-pair signal line in which the common mode choke coil is integrated with the multi-pair signal connector There is a common mode choke coil with a connector (see, for example, Patent Document 1).

An AC inlet filter connector in which a common mode choke coil is mounted on an internal AC power inlet has also been proposed (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 7-23931 (FIG. 5) Utility Model Registration No. 2528888 (FIG. 1)

  However, it is necessary to mount the common mode choke coil on the printed circuit board in advance in the method that uses the common mode choke coil to take countermeasures against radio waves and static electricity. There was a problem.

  In general, the measurement of whether or not a product meets the criteria defined by VCCI is often performed in the final process of the product. However, even if it is detected that the reference value is exceeded in the final process of the product, the countermeasure is not easy because the common mode choke coil is already mounted. In particular, it is practically impossible to take measures that involve circuit changes in the late development stage.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a connector that can easily perform countermeasures against radio waves / countermeasures even after the late stage of product development.

In order to solve the above-described problem, a connector for connecting an information device and a signal cable connected to the information device, the common mode choke coil portion, the first connector portion, and the second connector portion, , A connector is provided. The common mode choke coil unit is formed by winding a plurality of pairs of bobbins in which a predetermined core is stored. The first connector section connects a plurality of pairs of lead wires on one end side of the common mode choke coil section and a plurality of pairs of signal lines built in a receptacle disposed in the information device. The second connector section connects a plurality of pairs of lead wires on the other end side of the common mode choke coil section and a plurality of pairs of signal lines built in a plug connected to the signal cable. This connector is inserted between the receptacle of the information device and the plug connected to the signal cable.

In the connector having such a configuration, a common mode choke coil portion is mounted between the first connector portion and the second connector portion, and connected to the receptacle of the information device via the first connector portion, It connects with the plug of the signal cable connected to an information apparatus via a 2nd connector part. Thereby, the signal wire | line of information equipment and the signal wire | line of a signal cable are connected via a common mode choke coil part .

  According to the connector of the present invention, the signal line of the information device and the signal line of the signal cable are connected via the common mode choke coil for countermeasures against radio waves and static electricity built in the connector. In addition, the connector has a pair of connector parts that fit into each of the information device receptacle and the signal cable plug, and is detachable between the information device and the signal cable, and used as an external adapter. Can do.

  If an external connector with a built-in common mode choke coil that eliminates common mode noise is inserted between the information device and the signal cable as necessary, the product will be developed late or after product shipment. Even so, it is possible to take countermeasures against radio waves / static electricity.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a schematic configuration of a connector according to an embodiment of the present invention.
The connector 10 includes a main body 11, a male connector 12, and a female connector 13, and is housed in a resin case or the like. The main body 11 includes a common mode choke coil. The connector 10 is used as an external adapter inserted between the receptacle of the information device and the plug of the signal cable connected to the information device. In the following description, for convenience, the first connector portion connected to the receptacle of the information device is referred to as a male connector portion 12 and the second connector portion connected to the signal cable plug is referred to as a female connector portion 13.

  The male connector portion 12 has a shape in which the connection portion with the receptacle of the information device protrudes in a convex shape from the side surface of the main body portion 11, and is connected to a signal line built in the information device at the tip. Terminals are arranged. The shape of the male connector 12 is the same as that of the signal cable connector corresponding to the receptacle of the information device, and the signal line built in the information device is connected to the terminal provided at the tip by being inserted into the receptacle. To do.

  The female connector portion 13 has a shape in which the connection portion with the plug of the signal cable is recessed from the side surface of the main body portion 11, and a terminal connected to a signal line built in the signal cable at the tip. Is arranged. The shape of the female connector portion 13 is the same as that of the receptacle of the information device. When the signal cable is inserted, the signal line built in the signal cable is connected to the terminal provided at the tip.

  The inside of the main body 11 will be described. FIG. 2 is a cross-sectional view of the connector shown in FIG. The figure is a horizontal sectional view crossing the connector 10 shown in FIG. 1 from the male connector section 12 toward the female connector section 13.

  A signal line for connecting the terminals 15a, 15b, 15c, 15d of the male connector 12 and the terminals 16a, 16b, 16c, 16d of the female connector 13 together with the common mode choke coil 14 to the main body 11 17a, 17b, 17c, 17d. Note that one signal path is formed by the terminals of the male connector section 12, the terminals of the female connector section 13, and the signal lines, which are identified by a, b, c, and d, respectively.

  The common mode choke coil unit 14 has a general common mode choke coil structure, and is formed by, for example, winding a pair of windings around an annular bobbin incorporating a core (magnetic body). The pair of windings are wound around one bobbin in opposite directions. Various methods such as bifilar winding are known as winding methods, but the core material and the winding method are not particularly limited in the present embodiment.

  The common mode choke coil unit 14 is connected to a signal line from which common mode noise is to be removed. In the illustrated example, it is assumed that common mode noise is propagated through the signal lines 17b and 17c and is not propagated through the signal lines 17a and 17d. In such a case, the lead wire on one end side of the common mode choke coil portion 14 is connected to the terminals 15 b and 15 c of the male connector portion 12, and the lead wire on the other end side is the terminal 16 b of the female connector 13. , 16c. That is, the signal line 17b that connects the terminal 15b of the male connector 12 and the terminal 16b of the female connector 13, and the signal that connects the terminal 15c of the male connector 12 and the terminal 16c of the female connector 13 The wire 17c passes through the common mode choke coil portion 14. Further, the terminals 15a and 15d of the male connector section 12 and the terminals 16a and 16d of the female connector section 13 are directly connected by signal lines 17a and 17d without passing through the common mode choke coil.

FIG. 3 is a diagram showing an electrical equivalent circuit of the common mode choke coil section. The same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.
In the common mode choke coil section 14, windings 14b and 14c wound in opposite directions face each other with a core (magnetic body) 14a interposed therebetween. In the illustrated example, a winding 14b is formed between the terminal 15b of the male connector 12 and the terminal 16b of the female connector 13, and the terminal 15c of the male connector 12 and the terminal 16c of the female connector 13 are formed. Between the two, the winding 14c is formed. When a common mode noise current flows from the terminals 15b and 16b or the terminals 15c and 16c, the windings 14b and 14c are wound in opposite directions, so that magnetic fluxes in the same direction are generated in the core 14a. Since the magnetic fluxes generated at this time are added together, a large impedance is generated and the common mode noise current is attenuated. If the generated impedance is appropriate, common mode noise can be removed.

  As described above, the connector 10 has the male connector 12 connected to the information device and the female connector 13 connected to the signal cable, and among the signal lines connecting the respective terminals, In this configuration, the common mode choke coil unit 14 is arranged on a signal line that needs to remove common mode noise. Due to such a configuration, the connector 10 is provided between the receptacle of the information device and the plug of the signal cable corresponding to the receptacle as needed even in the later stage of development of the information device or after the end of development. Can be arranged. When the connector 10 is thus arranged, the common mode noise current flowing from the terminal is removed by the common mode choke coil built in the connector 10.

  Note that the magnitude of the inductance generated in the common mode choke coil section 14 varies depending on the magnitude of the magnetic force of the core 14a, the number of windings, and the like. Therefore, a plurality of connectors 10 having different inductances are prepared in advance. Thereby, it is possible to select the most suitable connector 10 by performing a test by appropriately replacing the connector 10 as necessary. As a result, it is possible to take radio wave countermeasures / static electricity countermeasures with a simple operation of replacing the external connector 10 even in the later stage of development or after shipping of information equipment.

  In the above description, one connector of the connector 10 is male and the other connector is female. However, the connector 10 only needs to match the shape of the receptacle of the information device and the shape of the plug of the signal cable. The combination is not limited to this.

Hereinafter, a case where the connector of the embodiment is applied to a USB connector and an IEEE 1394 connector will be described in detail with reference to the drawings.
First, the USB connector will be described. FIG. 4 is a schematic diagram showing an example applied to a USB connector. The figure shows an example of a series A connector.

A personal computer (hereinafter referred to as a PC) 200 as an information device is provided with a receptacle 210 into which a plug 310 of a USB cable 300 is inserted. Receptacle 210 and the plug 310 is a connector that is based on the standard of the USB Series A, 1 pin power from the top in FIG. (Vbus), 2 pin Data ^-, 3 pin Data ^+, 4 pin ground (GND) Assigned to. The external appearance of the USB connector 100 is the same as that of FIG. 1, and the male connector portion 112 having the same shape as the plug 310, the female connector portion 113 having the same shape as the receptacle 210 and the common mode choke coil portion 114 are incorporated. The main body portion thus formed is housed in an integrally molded case.

  The USB connector 100 includes a male connector portion 112 that is connected to the receptacle 210, a female connector portion 113 that is connected to the plug 310, and a common mode choke coil portion 114. The male connector portion 112 is a plug based on the USB series A standard, similar to the plug 310. The female connector portion 113 is a receptacle based on the USB series A standard, similar to the receptacle 210.

Pin 115a of the male connector portion 112, 115b, 115c, 115d are provided, respectively associated with the pins of the receptacle 210, the pin 115a is Vbus pin 115b is Data ^-, pin 115c is Data ^+, pin 115d is GND, respectively Correspond. Pin 116a of the female connector portion 113, 116b, 116c, 116d is associated with the pin of the plug 310, respectively, the pin 116a is Vbus pin 116b is Data ^{-, +} pin 116c is Data, pin 116d is GND, respectively Correspond. The pins 115b and 115c of the male connector portion 112 are connected to the pins 116b and 116c of the female connector portion 113 via the common mode choke coil portion 114, respectively, and the pins 115a and 115d of the male connector portion 112 As described with reference to FIGS. 2 and 3, the pins 116a and 116d of the female connector portion 113 are directly connected by the signal lines.

  If the USB connector 100 having such a configuration is externally attached between the receptacle 210 of the PC 200 and the plug 310 of the USB cable 300, common mode noise propagated through the USB cable 300 can be removed.

  In the above description, the series A connector has been described. However, the series B is also provided with a male connector and a female connector having plug and receptacle shapes based on the standard of the series B. A USB connector for connecting the signal cable and the signal cable can be realized.

  Next, the IEEE 1394 connector will be described. There are two types of IEEE 1394 connectors: a standard 6-pin type and a small 4-pin type mainly used for AV equipment. Each will be described.

FIG. 5 is a schematic view showing an example applied to an IEEE 1394 connector (6 pins).
The PC 200 is provided with a receptacle 220 into which a plug 510 of the IEEE 1394 cable 500 is inserted. The receptacle 220 and the plug 510 are 6-pin connectors based on the IEEE 1394 standard. From the top of the figure, power supply (VB) is assigned to pin 1, ground (GND) to pin 2, DataA to pins 3 and 4, and DataB to pins 5 and 6. The external appearance of the IEEE 1394 connector 400 includes a male connector portion 412 having the same shape as the plug 510, a female connector portion 413 having the same shape as the receptacle 220, and a main body portion incorporating a common mode choke coil portion 414. It is housed in an integrally molded case.

  The 6-pin IEEE 1394 connector 400 includes a male connector part 412 connected to the receptacle 220, a female connector part 413 connected to the plug 510, and a common mode choke coil part 414. The male connector portion 412 is a plug based on the IEEE 1394 6-pin standard, similar to the plug 510. The female connector 413 is a receptacle based on the IEEE 1394 6-pin standard, similar to the receptacle 220.

  The pins 415a, 415b, 415c, 415d, 415e, and 415f of the male connector portion 412 are respectively associated with the pins of the receptacle 220, the pin 415a is VB, the pin 415b is GND, the pin 415c and the pin 415d are DataA, and the pin 415e. And pins 415f correspond to DataB, respectively. Similarly, the pins 416a, 416b, 416c, 416d, 416e, and 416f of the female connector portion 413 are also associated with the pins of the plug 510, respectively. In the IEEE 1394 connector 400, the pins 415c, 415d, 415e, and 415f of the male connector portion 412 to which data is transferred and the pins 416c, 416d, 416e, and 416f of the female connector portion 413 form the common mode choke coil portion 414. Connected via. The pins 415a and 415b of the male connector section 412 and the pins 416a and 416b of the female connector section 413 are directly connected by signal lines.

  If the IEEE 1394 connector 400 having such a configuration is externally attached between the receptacle 220 of the PC 200 and the plug 510 of the IEEE 1394 cable 500, common mode noise propagated through the IEEE 1394 cable 500 can be removed.

FIG. 6 is a schematic view showing an example applied to an IEEE 1394 connector (4 pins).
A receptacle 230 into which the plug 710 of the IEEE 1394 cable 700 is inserted is arranged on the PC 200. The receptacle 230 and the plug 710 are 4-pin compact connectors for AV equipment, and are composed of only signal lines for transmitting data by omitting VB and GND from the IEEE 1394 connector (6 pins) shown in FIG. . From the top of the figure, pins 1 and 2 are omitted, and pins 3 and 4 are assigned to DataA, and pins 5 and 6 are assigned to DataB. The external appearance of the IEEE 1394 connector 600 includes a male connector portion 612 having the same shape as that of the plug 710, a female connector portion 613 having the same shape as the receptacle 230, and a main body portion in which a common mode choke coil portion 614 is built. It is housed in an integrally molded case.

  The 4-pin IEEE 1394 connector 600 includes a male connector 612 connected to the receptacle 230, a female connector 613 connected to the plug 710, and a common mode choke coil 614. The male connector 612 is a plug based on the IEEE 1394 4-pin standard, similar to the plug 710. The female connector 613 is a receptacle based on the IEEE 1394 4-pin standard, similar to the receptacle 230.

  The pins 615a, 615b, 615c, and 615d of the male connector 612 are associated with the pins of the receptacle 230, respectively. The pins 615a and 615b correspond to DataA, and the pins 615c and 615d correspond to DataB, respectively. Similarly, the pins 616a, 616b, 616c, and 616d of the female connector 613 are associated with the pins of the plug 710, respectively. The pins 616a and 616b correspond to DataA, and the pins 616c and 616d correspond to DataB, respectively. In the IEEE1394 connector 600, since all signal lines are data signal lines, all signal lines are connected via the common mode choke coil section 614.

  If the IEEE 1394 connector 600 having such a configuration is externally attached between the receptacle 230 of the PC 200 and the plug 710 of the IEEE 1394 cable 700, common mode noise propagated through the IEEE 1394 cable 700 can be removed.

  For these connectors, several connectors having different inductances are prepared in advance, and the connectors are appropriately selected according to the situation at that time. This makes it possible to take effective radio wave countermeasures / static electricity countermeasures.

It is a perspective view which shows schematic structure of the connector of embodiment of this invention. It is sectional drawing of the connector shown in FIG. It is the figure which showed the electrical equivalent circuit of the common mode choke coil part. It is the schematic which showed an example applied to the USB connector. It is the schematic which showed an example applied to the IEEE1394 connector (6 pins). It is the schematic which showed an example applied to the IEEE1394 connector (4 pins).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Connector 11 Main body part 12 Male side connector part 13 Female side connector part 14 Common mode choke coil part 15a, 15b, 15c, 15d Terminal (male side connector part)
16a, 16b, 16c, 16d terminal (female side connector)
17a, 17b, 17c, 17d Signal line

Claims (4)

In a connector for connecting an information device and a signal cable connected to the information device,
A common mode choke coil portion in which a plurality of windings are wound around a bobbin in which a predetermined core is stored;
A first connector portion for connecting a plurality of pairs of lead wires on one end side of the common mode choke coil portion and a plurality of pairs of signal lines built in a receptacle disposed in the information device;
A second connector portion for connecting a plurality of pairs of lead wires on the other end side of the common mode choke coil portion and a plurality of pairs of signal wires built in a plug connected to the signal cable;
And a connector inserted between the receptacle of the information device and a plug connected to the signal cable. The first connector portion has a female or male shape that is the same shape as the plug connected to the signal cable,
The second connector portion has the same shape as the receptacle, and has a male shape if the first connector portion is female, and a female shape if the first connector portion is male.
The connector according to claim 1.   The connector according to claim 2, wherein the first connector portion and the second connector portion are a plug and a receptacle or a receptacle and a plug according to a USB (Universal Serial Bus) standard.   3. The first connector portion and the second connector portion are plugs and receptacles or receptacles and plugs according to IEEE 1394 (Institute of Electrical and Electronic Engineers 1394) standards. connector.

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