JP2003203728A - Plug converting adapter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easy-to-handle plug converting adapter. <P>SOLUTION: The plug converting adapter used to connect a single-headed plug with a jack which does not suit the single-headed plug is structured so that a jack part 20 to admit insertion of the single-headed plug is provided at one end of the body 60 and that a plug part 30 to be inserted into the jack is provided at the another end of the body 60. The plug part 30 protrudes perpendicularly to the axis of the jack part 20, and an electric element (resistance 40) to control the electric signal on the jack side is included in the body 60. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug conversion adapter used for connecting a single-headed plug (single-headed electric plug) to a jack that is not compatible with the single-headed plug.

[0002]

2. Description of the Related Art For example, in mobile phones and the like, there is a strong demand for miniaturization and also for multi-functionality. From these points, miniaturization and high-density packaging of devices are being promoted.
Under these circumstances, in order to connect other devices to the mobile phone, the jack mounted on the mobile phone has been miniaturized, and the so-called φ2.5 optical minijack has been used. It's coming. This φ2.5 optical mini jack has a 6-pole jack section for electrical connection, and is compatible with a φ2.5 6-pole plug with a plug diameter of 2.5 mm.

[0003]

However, for example, a headphone with a plug, which has already been popular in the market, is generally equipped with a φ3.5 stereo plug (three-pole plug) having a plug diameter of 3.5 mm. The diameter is different from that of the 56-pole plug, and the number of poles is also different. Therefore, a person who has a device or cable to which a conventional plug such as this φ3.5 3-pole plug is attached can use (connect) it without having to replace the device or cable. An easy-to-use plug conversion adapter has been desired.

In view of such a situation, an object of the present invention is to
It is to provide an easy-to-use plug conversion adapter.

[0005]

According to the invention of claim 1, a plug conversion adapter used for connecting a single-headed plug to a jack not compatible with the single-headed plug is a jack into which the single-headed plug is inserted. Has a portion at one end of the body, has a plug portion to be inserted into the jack on the other end side of the body, the plug portion is projected in a direction orthogonal to the central axis of the jack portion, In the body,
An electric element for controlling the electric signal on the jack side is incorporated. According to the invention of claim 2, the plug conversion adapter used for connecting the single-headed plug to a jack that is not compatible with the single-headed plug has a first body having a jack portion into which the single-headed plug is inserted at one end. And a second body having at one end a plug portion to be inserted into the jack, the other end of the first body and the other end of the second body are mechanically coupled, and the jack portion and the plug are A cable for electrically connecting the plug portion to the jack side, and the plug portion projecting in a direction orthogonal to the direction in which the cable is led out of the second body. It is assumed that an electric element for controlling a signal is built in.

According to a third aspect of the present invention, in the invention according to any one of the first and second aspects, the single-headed plug has a plug diameter of 3.5 mm.
The above-mentioned plug portion is a 6-pole plug having a plug diameter of 2.5 mm.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described by way of examples with reference to the drawings. FIG. 1 shows an external shape of an embodiment of a plug conversion adapter according to the present invention, and FIG. 2 shows a schematic internal structure thereof.
In this example, the plug conversion adapter 10 is used to connect the φ3.5 3-pole plug attached to the headphones to the φ2.5 6-pole jack mounted on the mobile phone. FIGS. 3 and 4 show parts constituting the jack section 20 and the plug section 30 of the plug conversion adapter 10, respectively. First, referring to FIGS. 3 and 4, regarding the configuration of the jack section 20 and the plug section 30, explain.

As shown in FIG. 3, the jack portion 20 comprises an insulator 21, a housing 22, an earth spring 23, and a pair of contacts 24 and 25. The cylindrical housing 22 is made of metal, and an insertion port 26 into which a φ3.5 3-pole plug is inserted is formed at one end thereof. Inside the insertion opening 26, the earth spring 23
Are arranged, and the earth spring 23 and the housing 22 are in contact with each other and electrically connected to each other. The earth spring 23 has a cylindrical shape and is provided with a plurality of elastic contact pieces 23a protruding toward the central axis. The cylindrical insulator 21 with one end face closed is made of resin, and the closed end face is the other end side of the housing 22 and is housed in the housing 22. The pair of contacts 2 are provided in the insulator 21.
It houses 4,25.

The contacts 24 and 25 are provided with sandwiching pieces 24a and 25a, both of which are U-shaped.
It is assumed that the tips of 5a are on the side of the earth spring 23 and that the tips are offset from each other in the central axis direction as shown in the figure. It should be noted that terminals 24b and 25b integrally formed with the contacts 24 and 25 are led out and projected from the closed end surface of the insulator 21. On the other hand, the plug portion 30 has a structure as shown in FIG. 4, and the central shaft portion has a tip 31, an insulating collar 32a, a first ring 33, an insulating collar 32b, a second ring 34, an insulating collar 32c, from the tip. The sleeve 35 and the insulating collar 32d are sequentially arranged and integrally molded, that is, the insulating collar 3
2a to 32d are made of integrally molded resin.

The sleeve 35 has a small diameter portion 35a and a large diameter portion 35.
As shown in the figure, knurled eyes 35c are formed in the large diameter portion 35b, and a resin insulating holder 36 is integrally molded around this portion. The insulating holder 36 has a cylindrical shape on the chip 31 side, and a third ring 37 and a fourth ring 38 are arranged on the inner surface thereof. The ring 37 is located on the tip side (the tip 31 side) of the cylindrical portion 36 a, and the ring 38 is on the cylindrical portion 36 a.
It is located at the back of a. On the back side of the insulating holder 36, terminals 37a led out from rings 37, 38,
38a is projected, and terminals 33a and 34a led out from the rings 33 and 34, respectively, are positioned on the peripheral surface of the insulating collar 32d on the rear end side of the central shaft portion. The terminal 31a led out from the chip 31 side projects from the rear end surface of the insulating collar 32d.

The tip 31, the rings 33, 34, 37, 38 and the sleeve 35 in the plug portion 30 are all made of brass, for example, and are plated with gold.
Similarly, the housing 22 of the jack portion 20 is also made of brass and gold-plated. In addition,
The earth spring 23 and the contacts 24 and 25 are made of phosphor bronze, and the earth spring 23 and the contact 2
4 is gold-plated, and the contact 25 is nickel-plated in this example. As shown in FIG. 2, the jack portion 20 and the plug portion 30 are arranged so that the plug portion 30 projects in a direction orthogonal to the central axis of the jack portion 20, and the corresponding terminals are electrically connected. . It should be noted that in FIG. 2, illustration of lead wires connecting terminals and illustration of a heat-shrinkable tube covered to prevent short circuit are omitted.

In FIG. 2, 40 is the plug conversion adapter 1
0 shows a resistance element attached to control the electric signal on the side of the φ2.5 6-pole jack into which the plug section 30 is inserted, and the lead 41 of the resistance element 40 is connected to the housing 22 of the jack section 20 and the plug. Terminal 3 of section 30
Soldered to each of 7a. With the required electrical connection between the jack section 20 and the plug section 30 completed,
In this example, as shown in FIG. 2, a resin-made reinforcing portion 50 is first formed by primary molding with respect to the connecting portion.
Next, the body 60 is formed by secondary molding, and the plug conversion adapter 10 shown in FIG. 1 is completed.

The body 60 having a substantially columnar shape is made of soft synthetic resin or synthetic rubber (elastomer).
On the other hand, the reinforcing portion 50 is made of a hard synthetic resin in order to reinforce the soldering portion and to secure the mechanical connection strength between the jack portion 20 and the plug portion 30 arranged orthogonally to each other. In the plug conversion adapter 10 having the above structure, the jack portion 20 is provided at one end of the body 60 and the plug portion 30 is provided at the other end side, and the plug conversion adapter 10 as a whole is L-shaped.
Therefore, the plug portion 30 is connected to the φ2.5 6-pole jack of the mobile phone, that is, when the plug conversion adapter 10 is attached to the mobile phone, the protrusion is suppressed and becomes an unobtrusive object. There is.

FIG. 5 shows a connection diagram of the plug conversion adapter 10 together with a φ3.5 3-pole plug (stereo plug) 70 inserted into the jack section 20, and in this figure, 6-pole of the plug section 30. A sleeve,
The tip and the four rings are labeled 1-4, 6, 7. Hereinafter, when referring to this code, for example, in the case of code 1, it is described as "1". In this example, the resistance element 40
Is interposed between the housing 22 of the jack portion 20 and the plug portion “6”, that is, the plug portion “6” is connected to the GND via the resistance element 40.
The reason for providing the resistance element 40 will be described below.

6 of the portable telephone in which the plug portion 30 is inserted
On the pole jack side, stereo detection is performed because the plug portion "6" is GND. However,
When the plug portion “6” is GND, when the plug portion 30 is inserted into the 6-pole jack, the plug portion “6” corresponds to the plug portion “7”.
A situation may occur in which the contact piece of the polar jack comes into contact with the plug portion “6” and becomes GND during insertion.
The 6-pole jack contact corresponding to the plug “7” detects the switch of the remote controller and is connected to GND.
If OW is detected, a malfunction occurs in which the telephone hook is turned on.

Therefore, the resistance element 40 is provided in order to prevent such malfunction and to enable stereo detection on the 6-pole jack side, and the resistance value thereof is selected to be 22 KΩ, for example. . It should be noted that, like the resistance element in this example, by incorporating an electric element for controlling the electric signal of the counterpart jack side to which the plug conversion adapter is connected in the plug conversion adapter, the circuit configuration of the counterpart jack side can be improved. It can be simplified. FIG. 6 shows another embodiment of the plug conversion adapter according to the present invention. In this example, the body in which the jack portion 20 is insert-molded and the body in which the plug portion 30 is insert-molded are separate bodies. It is said that.

That is, the body 61 having the jack portion 20 at one end and the body 62 having the plug portion 30 at one end are mechanically coupled and electrically connected to each other at their other ends by the cable 80. 62 plug portion 30
Are projected in a direction orthogonal to the direction of deriving the cable 80. In addition, although it is hidden and invisible in the figure, this body 6
As in the plug conversion adapter 10 described above, the resistor element 40 is also built into the 2 and the φ3.5 3-pole plug attached to the headphones is connected to the φ2.5 6-pole jack mounted on the mobile phone. It has been used to

The plug conversion adapter 1 shown in FIG.
When 0, for example, when it is twisted, a force may be applied to the jack side of the mobile phone to cause damage, whereas the plug conversion adapter 90 shown in FIG. 6 structurally causes such a problem. It is difficult and can be said to be advantageous in that respect.

[0019]

As described above, according to the present invention, it is suitable to be used, for example, when a φ3.5 3-pole plug attached to a headphone is connected to a φ2.5 6-pole jack mounted on a mobile phone. It is possible to obtain a convenient plug conversion adapter. Further, an electric element for controlling an electric signal on the side of the opponent's jack is built in, and in this respect, the circuit configuration on the side of the opponent's jack can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a plug conversion adapter according to the invention of claim 1. FIG.

FIG. 2 is a diagram for explaining the internal structure of FIG.

FIG. 3 is a diagram showing a detailed structure of a jack section in FIG.

FIG. 4 is a diagram showing a detailed structure of a plug portion in FIG.

5 is a wiring diagram (circuit diagram) of the plug conversion adapter shown in FIG.

FIG. 6 is a front view showing an embodiment of a plug conversion adapter according to the invention of claim 2.

Claims (3)

[Claims] 1. A plug conversion adapter used for connecting a single-headed plug to a jack that is not compatible with the single-headed plug, wherein a jack portion into which the single-headed plug is inserted is provided at one end of the body. Has a plug portion to be inserted into the jack on the other end side of the jack portion, the plug portion is projected in a direction orthogonal to the central axis of the jack portion, the electrical signal of the jack side in the body. A plug conversion adapter that has a built-in electric element for controlling. 2. A plug conversion adapter used for connecting a single-headed plug to a jack not compatible with the single-headed plug, the first body having at one end a jack portion into which the single-headed plug is inserted, Second having a plug portion inserted into the jack at one end
And a cable for mechanically coupling the other end of the first body and the other end of the second body to electrically connect the jack part and the plug part. The part projects in a direction orthogonal to the direction of the cable from the second body, and an electric element for controlling an electric signal on the jack side is built in the second body. Characteristic plug conversion adapter. 3. The plug conversion adapter according to claim 1, wherein the single-headed plug is a 3-pole plug with a plug diameter of 3.5 mm, and the plug portion is a 6-pole plug with a plug diameter of 2.5 mm. Plug conversion adapter characterized in that it is said to be.