JP2002042996A - Multipolar jack, multipolar plug, and connecting structure of multipolar jack to multipolar plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multipolar (sexapolar) jack capable of preventing the short circuit of two additional electrodes when connecting a multipolar plug having a ring-like fixed electrode in the root of a plug shaft part to add two poles by use of the cylindrical part of a body and being reduced in size, a multipolar plug capable of being reduced in size, and a connecting structure for the both allowing the connection in a compact form. SOLUTION: Four main electrodes 61-64 of the plug-side shaft part make contact with four main electrodes 31-34 on the inside of the jack-side body. A fixed electrode 26 and a movable electrode 25 are arranged on both lateral sides of the jack-side cylindrical part 12, and a fixed electrode 65 and a movable electrode 66 arranged on an imaginary circle are provided on the plug-side base part 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a multi-pole jack, a multi-pole plug, and a connection structure between a multi-pole jack and a multi-pole plug.

[0002]

2. Description of the Related Art Japanese Patent No. 2875617 discloses a conventional multipolar jack and a single-headed multipolar plug which is a counterpart thereof. The multi-pole jack described in this publication has four electrodes forming four poles inside a body, and a fifth fixed electrode called a base is provided on the outer periphery of a cylindrical portion of the body. A sixth movable electrode that is attached in a ring shape and that can be elastically deformed is provided outside the fixed electrode at an interval. In addition, the multi-pole plug which is the counterpart of this multi-pole jack is
A ring-shaped two connection terminals forming a fifth pole and a sixth pole concentrically with the root portion are provided outside the root portion of the shaft portion provided with four contact points respectively contacting the two electrodes. The two connection terminals of the fifth and sixth poles respectively contact the fifth fixed electrode and the sixth movable electrode of the multipolar jack.

Further, Japanese Patent Application Laid-Open No. 8-138807 describes another conventional multi-pole jack and a single-headed multi-pole plug which is a counterpart thereof. The multipolar jack described in this publication has two electrodes at two locations on the outer peripheral portion of the sleeve. The multipolar plug which is a counterpart of the multipolar jack has two ring-shaped contacts outside the root portion of the shaft portion and concentrically with the root portion.

Further, Japanese Patent Laid-Open Publication No. Hei 10-335010 and Japanese Utility Model Publication No. 2548613 also describe a multi-pole jack and a multi-pole plug.

[0005]

SUMMARY OF THE INVENTION Patent No. 2875617
In the multipolar jack described in Japanese Patent Application Laid-Open Publication No. H10-209, a fifth fixed electrode is attached to the outer periphery of a cylindrical portion provided in a body, and a sixth movable electrode is provided outside the fixed electrode. Therefore, for example, when a 5-pole multipolar plug having a fourth pole on the shaft and a ring-shaped fifth fixed electrode at the root of the shaft is connected, the inner and outer surfaces of the fifth fixed electrode of the multipole plug are connected. Contacting the fixed electrode and the movable electrode on the multipolar jack side to short-circuit the fixed electrode and the movable electrode, and the fact that the sixth movable electrode is located outside the fifth fixed electrode There is a problem that the arrangement restricts the miniaturization of the multi-pole jack. In addition, with respect to the multi-pole plug, the arrangement of the sixth-pole connection terminal outside the fifth-pole connection terminal poses a problem that the miniaturization of the multi-pole plug is restricted.

A multi-pole jack described in Japanese Patent Application Laid-Open No. 8-138807 also has a four-pole
When a five-pole multi-pole plug having a ring-shaped fifth pole fixed electrode is connected to the root of the shaft portion, the multi-pole jack-side sleeve is provided at two places on the inner surface of the fifth pole fixed electrode of the multi-pole plug. There is a problem that two electrodes on the outer peripheral portion come into contact with each other and short-circuit the electrodes. As for the multipolar plug, there is a problem that the two ring-shaped contacts are arranged concentrically on the inner side and the outer side, which restricts downsizing of the multipolar plug.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and problems, and when the number of poles is added by using a cylindrical portion provided in the body of a multi-pole jack, as described above. Even when a multipolar plug having a ring-shaped fixed electrode is connected to the root of the shaft, the two electrodes added using the cylindrical portion are not short-circuited by the ring-shaped fixed electrode. It aims to provide a multi-pole jack.

[0008] Further, the present invention provides a method using the above-mentioned tubular portion.
An object of the present invention is to provide a multi-pole jack that facilitates miniaturization while adding one pole.

Further, according to the present invention, when connecting a multipolar plug as a mating member, the electrode inside the body and the electrode added using the cylindrical portion are connected to the electrode at the shaft of the multipolar plug or the like. It is an object of the present invention to provide a multi-pole jack capable of increasing the degree of freedom in circuit design on the device side by making appropriate contact with an electrode added around a base portion of a shaft portion.

[0010] Another object of the present invention is to provide a multi-pole plug that is easy to promote miniaturization despite the addition of two electrodes around the root of the shaft.

Another object of the present invention is to provide a multipolar plug which can prevent erroneous fitting (erroneous insertion) with a mating multipolar jack.

Another object of the present invention is to provide a connection structure between a multi-pole jack and a multi-pole plug which can connect the multi-pole jack and the multi-pole plug in a compact form.

[0013]

The present invention will be described with reference to the drawings. Note that the symbols in the figure are used in this column because
The purpose is to help understand the contents of the invention, and is not intended to limit the contents to the illustrated examples.

The multi-pole jack J according to the present invention comprises a main body portion 11 and a cylindrical portion 12 protruding from the front side of the main body portion.
The inside of a body 10 integrally having
Through a plurality of main electrodes 61 to 64 which are respectively arranged in front and rear on a shaft portion 50 of the multipolar plug P which is inserted concentrically or substantially concentrically with the cylindrical portion thereof. It has electrodes 21 to 24.

In the multi-pole jack J according to the present invention, additional electrodes are separately provided at two positions around the cylindrical portion 12, and one additional electrode is positioned at a fixed position with respect to the cylindrical portion. As a fixed electrode (sixth pole) 26 positioned so as not to be displaceable, an additional electrode on the other side is formed as a movable electrode (fifth pole) 25 that can be elastically displaced in the direction of contacting and separating from the cylindrical portion. In addition, the distance L1 from the axis of the cylindrical portion 12 to the contact of the fixed electrode is shorter than the distance L2 from the axis of the cylindrical portion 12 to the contact of the movable electrode. For this reason, even when a multipolar plug P having a ring-shaped fixed electrode (fifth pole) is connected to the root portion of the shaft portion 50, the multi-pole plug P is added by using the cylindrical portion by the ring-shaped fixed electrode. A situation in which the two fixed electrodes 26 and the movable electrode 25 are short-circuited cannot occur.

Further, in the multipolar jack according to the present invention, the contact of the fixed electrode 26 is provided at one of two additional electrodes provided at two locations around the shaft portion 50 of the multipolar plug P. Contact with the movable electrode 2
5 contacts are in contact. Therefore, a multi-pole plug having the same number of poles as the multi-pole jack can be connected to the multi-pole jack.

In the multi-pole jack according to the present invention, the fixed electrode 26 is accommodated in a recess 15 formed on the outer periphery of the cylindrical portion 12, and the movable electrode 25 is It is preferable that the fixed electrode 26 is opposed to the flat surface 17 formed by removing a part of the outer periphery of the cylindrical portion 12 at a certain interval. Further, the movable electrode 25 does not need to be located far away from the cylindrical portion 12 to increase the size of the multi-pole jack J.

In the multi-pole jack J according to the present invention, the body main portion 11 has a rectangular parallelepiped outer shape projecting to the left and right sides of the cylindrical portion 12, and the fixed electrode 26 and the movable electrode 25 are connected to each other. A fixed electrode mounting piece 26a formed so as to extend rearward from the fixed electrode 26 and a rear electrode extending from the movable electrode 25 are disposed separately from each other on the left and right sides of the cylindrical portion 12. It is preferable that each of the movable electrode mounting pieces 25a formed on the body portion 11 is fixed to the body main portion 11 on both sides of the cylindrical portion 12. According to this, the fixed electrode 26 and the movable electrode 25 are originally protruded to the left and right sides of the cylindrical portion 12.
Can be used to prevent the locations where the respective electrodes 26 and 25 are attached from protruding outside the body 10, which helps to prevent the multi-pole jack J from increasing in size. .

In the multi-pole jack J according to the present invention, the fixed electrode 26 and the movable electrode 25 are
The main electrode (first pole) 61 on the side of the multipolar plug P located at the foremost side of the shaft portion 50 inserted into the jack 50 is located at the rearmost position inside the body 10. Before contacting the main electrode (first pole) 21 on the other side, the body is contacted with one or both of the two additional electrodes (fifth pole 65 and sixth pole 66) on the multipolar plug side. It is desirable that the main part 11 protrudes forward from the front end. According to this, the fixed electrode 26 or the movable electrode 25 added using the tubular portion 12 can be used as, for example, an electrode for recognizing a stereo mode and a monaural mode of an audio device, and the modes can be used. Unless it is recognized, the main electrode 61 on the multipolar plug side located at the foremost side of the shaft portion is the main electrode 2 on the multipolar jack side located rearmost inside the body.
It is possible to prevent the transmission and reception of the audio signal by touching the contact 1, which helps to increase the degree of freedom in circuit design on the device side.

In the multi-pole jack J according to the present invention, four poles are formed by the plurality of main electrodes 21 to 24 provided on the inside of the body 10 on the multi-pole jack side, and three poles of which are formed in the body 10 One main electrode is formed by three main electrodes 21 to 23 disposed inside the main part 11, and the other one pole protrudes inside the cylindrical part through an opening formed in the cylindrical wall of the cylindrical part. It is possible to adopt a configuration of being formed by the main electrode 24, and according to this, it is possible to obtain a six-pole multi-pole jack that facilitates miniaturization.

Next, the multi-pole plug P according to the present invention includes a shaft portion 50 having a plurality of main electrodes 61 to 64 arranged in front and rear, and the plurality of main electrodes provided on the multi-pole jack J side. Are electrically connected to the main electrodes 21 to 24 respectively. Such a multipolar plug is known as a single-headed multipolar plug.

In the multipolar plug according to the present invention, the outer peripheral portion of the shaft portion is located concentrically with respect to the shaft portion with a space between the shaft portion and the radial length. Two arc-shaped additional electrodes that are the same or substantially the same are provided, and one of the additional electrodes on one side is entirely arc-shaped fixed electrode (fifth electrode).
The additional electrode on the other side is formed as an arc-shaped movable electrode (sixth pole) 66 that can be elastically displaced in the direction of approaching and separating from the root of the shaft. For this reason, while having two additional electrodes at the root portion of the shaft portion, it is difficult to increase the size of the multipolar plug due to the additional electrodes.

In the multipolar plug according to the present invention, the distance L1 'from the axis of the shaft to the contact point of the movable electrode is the distance L1 from the axis of the shaft to the contact of the fixed electrode.
2 ′, the contact of the fixed electrode contacts the contact of one of the two additional electrodes provided on the multipolar jack, and the contact of the movable electrode contacts the contact of the other side. It comes into contact. According to this, it is possible to connect a multi-pole jack having the same number of poles as the multi-pole plug to the multi-pole plug.

In the multipolar plug P according to the present invention, the tip of the movable electrode 66 is curved in a mountain shape projecting in a direction approaching the shaft portion 50, and the top of the mountain portion is formed as a contact 66p of the movable electrode. In addition, it is desirable that the chevron portion protrudes inside an imaginary circle assumed by extending the fixed electrode 65 in the circumferential direction. This also makes it difficult to increase the size of the multipolar plug by the additional electrodes.

In the multipolar plug according to the present invention, four poles are formed by the plurality of main electrodes provided on the shaft portion, and another two poles are formed by the fixed electrode and the movable electrode. According to this, a six-pole multi-pole plug that facilitates downsizing can be obtained.

Next, the connection structure between the multi-pole jack and the multi-pole plug according to the present invention is a multi-pole jack integrally having a main body portion 11 and a cylindrical portion 12 protruding forward of the main body portion. A single-headed multipolar plug P inserted into the plurality of main electrodes 21 to 24 arranged side by side inside the side body 10 through the cylindrical portion 12 at a position concentric with or substantially concentric with the cylindrical portion. A plurality of main electrodes 61 to 65 provided side by side on the shaft portion 50 are electrically connected to each other.
The contact of the fixed electrode 26 on the multi-pole jack side, which is arranged so as to be non-displaceable at a fixed position at one place around the cylindrical portion 12, is provided outside the root portion of the shaft portion 50 at the root portion. And the contact of the movable electrode 66 on the multipolar plug side, which is arranged at an interval and is formed in an arc shape,
In addition, the cylindrical portion 1 is placed at another location around the cylindrical portion 12.
The contact point of the movable electrode 25 on the multipolar jack side, which is disposed so as to be elastically displaceable in the direction of contact and separation with respect to 2, is provided outside the root portion of the shaft portion 50 with a space between the shaft portion 50 and the root portion. The contact of the arc-shaped fixed electrode 65 on the multipolar plug P side is in contact. In addition, the contact point between each contact of the fixed electrode on the multi-pole jack and the movable electrode on the multi-pole plug is larger than the contact point between each contact of the movable electrode on the multi-pole jack and the fixed electrode on the multi-pole plug. , Are located close to the shaft.

Such a connection structure between the multi-pole jack and the multi-pole plug is formed by connecting the above-described multi-pole jack and the multi-pole plug. If the number of main electrodes on the multipolar jack side and the number of main electrodes on the multipolar plug side are set to four, a connection structure of six poles is obtained as a whole.

Also, the tip of the movable electrode on the multipolar plug side is curved in a mountain shape projecting in a direction approaching the shaft portion, and the top of the mountain shape is formed as a contact of the movable electrode, and the mountain shape is By adopting a configuration in which the fixed electrode protrudes inside an imaginary circle supposed by extending in the circumferential direction, the movable electrode on the multipolar plug side corresponds (opposes) to the fixed electrode on the multipolar jack side. In this case, the multi-pole plug can be inserted into the body of the multi-pole jack without any inconvenience and the electrodes of both are connected properly, but the movable electrode on the multi-pole plug corresponds to the fixed electrode on the multi-pole jack (opposite) If not, the above-mentioned chevron portion hits the cylindrical portion and the fixed electrode on the multi-pole jack side, so that the multi-pole plug cannot be inserted into the body of the multi-pole jack. Therefore, by adopting the above configuration, it is possible to prevent erroneous fitting (erroneous insertion) of the multipolar plug beforehand.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multi-pole jack J according to the present invention will be described with reference to FIGS.

FIG. 1 is an exploded perspective view of the multi-pole jack J, and FIG.
Is a front view, and FIG. 3 is a cross-sectional plan view. This multi-pole jack J has a body 10 which is an integrally molded body of a synthetic resin which is rich in electrical insulation. The body 10 includes a body main portion 11 and a cylindrical portion 1 protruding forward of the body main portion 11.
2 and the body main part 11 has a rectangular parallelepiped outer shape projecting on both left and right sides of the cylindrical part 12. Also,
The multi-pole jack J is provided with six electrodes. In FIG. 1, the respective electrodes are indicated by reference numerals 21 to 26, and in the following description, these electrodes are referred to as a first pole 21 and a second pole. 2
2, third pole 23, fourth pole 24, fifth pole 25, sixth pole 26
It is simplified and described.

The four electrodes from the first pole 21 to the fourth pole 24 form a four-pole main electrode as a whole.
The first pole 22, the second pole 22 and the third pole 23 are inserted into the inside of the body 10 from the rear end opening of the body main part 11 as shown in FIG. 1 and assembled as shown in FIG. That is,
The mounting pieces 21a, 22a, 23a respectively connected to the first pole 21, the second pole 22, and the third pole 23 are fixed at predetermined positions of the body main part 11 so as not to move.
The first, second and third poles 22 and 23 are arranged in this order from the rear to the front inside the body 10. Further, soldering terminals 21b, 22b, 23b provided on the first pole 21, the second pole 22, and the third pole 23 respectively protrude from the lower end of the body main part 11 outward. The first pole 21 and the second pole 22 are respectively combined with one electrode 27, 28, and the first pole 21 on the movable side and the electrode 27 on the fixed side are used to form the first normally closed electrode. The switch SW1 is formed, and the second movable side
The pole 22 and the fixed-side electrode 28 form a second normally closed switch SW2. The electrodes 27 and 28 are also provided with attachment pieces 27a and 28a and soldering terminals 27b and 28b, respectively, and the attachment pieces 27a and 28a
The soldering terminals 27b and 28b are projected from the lower end of the body main portion 11 outward or rearward from a lower end of the body main portion 11. As can be seen in FIG. 1, the mounting piece 24a of the fourth pole 24 is
It is attached to the outside of the body main part 11 in a state where the upper surface side recess 13a and the vertical groove 13b are accommodated. The fourth pole 24 is provided in the opening 14 formed in the cylindrical wall of the cylindrical portion 12.
And protrudes into the inside of the cylindrical portion 12.

Next, an additional electrode is formed by two electrodes, a fifth electrode 25 and a sixth electrode 26. In the following description, the sixth electrode 26 is used as an additional electrode on one side, and the fifth electrode 25 is used as an additional electrode. Defined as an additional electrode on the other side. These two additional electrodes are provided separately at two locations around the cylindrical portion 12 using the cylindrical portion 12.

That is, as shown in FIG. 2, the sixth pole 26, which is an additional electrode on one side, is housed in the recess 15 formed on the left side of the outer periphery of the cylindrical portion 12, and the upper and lower portions thereof The edges 26c, 26c are inserted into the longitudinal grooves 15a, 15a provided above and below the recess 15, and are positioned so as not to be displaced so as not to move. In other words, this sixth
The pole 26 is formed as a fixed electrode. As shown in FIG. 3, the sixth pole 26 is also provided with a fixed electrode mounting piece 26a and a soldering terminal 26b formed so as to extend backward. The fixed electrode mounting piece 26a is inserted from the front into the mounting groove 16 of the body main part 11 on the left side of the tubular portion 12 and fixed, and the soldering terminal 26b connected to the fixed electrode mounting piece 26a is fixed. Project from the lower end of the main body 11 to the outside thereof.

On the other hand, the fifth additional electrode on the other side
The pole 25 lacks the right part of the outer periphery of the tubular portion 12 (so-called D
It is formed as a movable electrode having elasticity, which is disposed opposite to the flat surface 17 formed by the above-mentioned cutting with a slight interval a (see FIG. 3). That is, as shown in FIG. 1 or FIG. 3, the fifth electrode 5 is also provided with a movable electrode mounting piece 25 a and a soldering terminal 25 b formed so as to extend rearward. The fifth pole 5 is elastically displaceable in the direction of coming into contact with and separating from the cylindrical portion 12 by being inserted into the mounting groove 18 of the body main portion 11 from above and fixed on the right side of the cylindrical portion 12,
The soldering terminal 25b protrudes outward from the lower end of the main body 11 of the body.

Then, as shown in FIG.
Is smaller than the distance L2 from the axis of the cylindrical portion 12 to the contact 25p of the fifth electrode 25 as a movable electrode. In this way, even when a multi-pole plug (not shown) having a regular circular ring-shaped fixed electrode is connected to the root of the shaft, the fifth pole 25 and the sixth pole 25 are connected to the regular circular ring-shaped fixed electrode. It does not happen that the poles 26 contact and short them. That is, when the fixed circular ring-shaped fixed electrode of the multipolar plug is fitted to the outside of the cylindrical portion 12, only the fifth pole 25 is in contact with the ring-shaped fixed electrode. The six poles 26 do not touch.
For this reason, the situation where both the fifth pole 25 and the sixth pole 26 come into contact with the fixed circular ring-shaped fixed electrode to cause a short circuit does not occur.

Further, as described above, since the sixth pole 26 is accommodated in the recess 15 on the outer periphery of the cylindrical portion 12 and is contained within the thickness of the cylindrical portion 12, the sixth pole 26 is It does not protrude outside the cylindrical portion 12. In addition, the fifth pole 25 has a flat surface 1 formed by D-cutting the cylindrical portion 12.
7, the fifth pole 25 is not positioned far away from the tubular portion 12.
From these facts, since the fifth pole 25 and the sixth pole 26 can be substantially accommodated in the cylindrical portion forming space in the case where the cylindrical portion 12 is assumed to be a regular cylindrical shape, the cylindrical portion 12 The fifth pole 25 and the sixth pole 26 occupy the space outside of the multi-pole jack J and the multipole jack J does not become large.

Further, the fixed electrode mounting piece 26a is
2, the movable electrode mounting piece 25a is inserted into the mounting groove 16 of the body main part 11 from the front and fixed in the mounting groove 18 of the body main part 11 on the right side of the cylindrical part 12 from above. By being fixed, there is an advantage that a situation in which a portion where the fifth pole 25 and the sixth pole 26 are attached protrudes outside the body 10 does not occur and the multipole jack does not become large.

The above-mentioned multi-pole jack J has the circuit pattern shown in FIG. 4 by the first to sixth electrodes.

Next, an embodiment of the multipolar plug P according to the present invention will be described with reference to FIGS.

FIG. 5 is a side view of the multipolar plug P, and FIG. 6 is a front view of the same. The multi-pole plug P is a single-headed multi-pole plug, and has a circular base 40 formed of a synthetic resin having high electrical insulation. Also, this multi-pole plug P has 6
In FIG. 5, these electrodes are indicated by reference numerals 61 to 66, and in the following description, these electrodes are referred to as a first pole (chip electrode) 61, a second pole 62, 3
The pole 63, the fourth pole 64, the fifth pole 65, and the sixth pole 66 are simply described.

The four electrodes from the first pole 61 to the fourth pole 64 form a four-pole main electrode as a whole.
The shaft portion 50, which protrudes straight from the base portion 40, is arranged side by side in this order from the tip side to the root portion, and spacers 67, 68, 69 made of an insulator are interposed between the electrodes. Have been.

A fifth pole 65 and a sixth pole 66 attached to the base 400 are provided between the fourth pole 64 and the fourth pole 64 provided at the base of the shaft 50. They are arranged at predetermined intervals. The fifth pole 65 and the sixth pole 66 are located concentrically with respect to the shaft portion 50 and have the same or substantially the same radial length.
To form two additional electrodes. The entirety of the fifth pole 65, which is an additional electrode on one side, is formed as an arc-shaped fixed electrode. In addition, a sixth pole 66 as an additional electrode on the other side is formed as a movable electrode. That is, as can be seen in FIG. 6, the sixth pole 66 in the illustrated example is formed of an arc-shaped elastic piece continuously provided at one end in the circumferential direction of the substantially semi-arc-shaped mounting piece 66a, and the tip thereof is formed. It is curved in a chevron shape protruding in the direction approaching the shaft portion 50, and the top of the chevron portion 66b is formed as a contact 66p. In addition, the chevron portion 66b protrudes inside an imaginary circle assumed by extending the fifth pole 65, which is a fixed electrode, in the circumferential direction. And the shaft 5
Distance L from axis 0 to contact 66p of sixth pole 66
1 ′ is shorter than the distance L2 ′ between the axis of the shaft portion 50 and the contact 65p of the fifth pole 65.

According to the multi-pole plug P, the fifth pole 65 forming two additional electrodes attached to the base 40 is formed.
And the sixth pole 66 are positioned concentrically with respect to the shaft portion 50 and have the same or substantially the same radial length, so that two additional electrodes are concentrically arranged inside and outside. As compared with the multipolar plug, there is an advantage that the multipolar plug P is not so large due to the two additional electrodes.

Next, an embodiment of the connection structure between the multi-pole jack J and the multi-pole plug P according to the present invention will be described with reference to FIG.

In this connection structure, the multipolar jack J described with reference to FIGS. 1 to 4 and the single-headed multipolar plug P described with reference to FIGS. 5 and 6 are combined. That is, the multi-pole plug P
When the shaft portion 50 is inserted through the tubular portion 12 of the multipolar jack J at a position concentric with or substantially concentric with the tubular portion 12,
As shown in the drawing, the electrodes from the first pole 21 to the fourth pole 24, which are the main electrodes on the multi-pole jack J side, and the first pole 61 to the fourth pole 64, which are the main electrodes on the multi-pole plug P side. Each electrode of each of them makes elastic contact with each other. In this state, the first pole 21 and the second pole 22 on the multipole jack J are elastically deformed outward, so that the first normally closed switch SW1 and the second normally closed switch SW2 on the multipole jack J are opened. Further, the contact 25p of the fifth pole 65, which is an arc-shaped fixed electrode on the multipole plug P, contacts the contact 25p of the fifth pole 25, which is a movable electrode on the multipole jack J side. The sixth fixed electrode on the jack J side
The contact 66p of the sixth pole 66, which is an arc-shaped movable electrode on the multipole plug P side, contacts the contact 26p of the pole 26. Thus, a six-pole connection structure is obtained as a whole.

By the way, as shown in FIG.
The sixth pole 26 and the fifth pole 25 are disposed at positions relatively protruding forward from the front end of the main body 11. By doing so, the first pole 61 which is the chip electrode on the multipolar plug P side inserted into the body 10 is
0 of the multipole jack J located at the rearmost position
Before contacting the pole 21, it comes into contact with one or both of the sixth pole 66 and the fifth pole 65 on the multipole plug P side. In this manner, the contact timing of the fifth poles 25, 65 and the sixth poles 26, 66 when connecting the multi-pole plug P to the multi-pole jack J is set to be earlier than the contact of the first poles 21, 61. The fifth pole 25 or the sixth pole 26 added using the cylindrical portion 12 can be used as, for example, an electrode for recognizing a stereo mode and a monaural mode of an audio device. By doing so,
Until those modes are recognized, it is possible to prevent the first pole 61 on the multipole plug P from contacting the first pole 21 on the multipole jack 1J to transmit and receive the audio signal. .

The contact 66p of the sixth pole 66 on the multipole plug P side
Is bent in a chevron shape, and the chevron portion protrudes inside an imaginary circle assumed by extending the fixed electrode in the circumferential direction, so that the sixth pole 66 on the multipole plug P side is connected to the multipole jack J. When the multi-pole plug P is made to correspond (oppose) to the sixth pole 26 on the side, the multi-pole plug P can be inserted into the body 10 of the multi-pole jack J without any inconvenience, and both electrodes are properly connected. On the other hand, when the sixth pole 66 on the multipolar plug P does not correspond to (oppose) the sixth pole 26 on the multipolar jack J, the chevron portion has the cylindrical portion 12 or the The multi-pole plug P cannot be inserted into the body 10 of the multi-pole jack J when the 5-pole 25 is hit. Therefore, erroneous fitting (erroneous insertion) of the multipolar plug P is prevented.

In the above-described multi-pole jack J and multi-pole plug P, four poles are formed by the main electrodes and two poles are formed by the additional electrodes, thereby forming six poles as a whole. The number of poles formed by the electrodes is not limited to four, and may be, for example, two or three.

[0049]

According to the multi-pole jack of the present invention, when adding two poles using the cylindrical portion of the body,
When a multi-pole plug having a ring-shaped fixed electrode is connected to the base of the shaft, two additional electrodes are not short-circuited by the ring-shaped fixed electrode. Promoted. Also, when connecting a multipolar plug to be a mating partner, the two additional electrodes come into contact with the two additional electrodes around the base portion of the shaft portion of the multipolar plug at an appropriate timing,
The degree of freedom in circuit design on the device side is increased.

According to the multipolar plug according to the present invention, miniaturization can be easily promoted despite the fact that two electrodes are added around the root of the shaft. Further, it is possible to prevent erroneous fitting (erroneous insertion) to the counterpart multipolar jack.

According to the connection structure between the multi-pole jack and the multi-pole plug according to the present invention, the multi-pole jack and the multi-pole plug can be connected in a compact form.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a multi-pole jack according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a cross-sectional plan view of the same.

FIG. 4 is a circuit pattern diagram.

FIG. 5 is a side view of a multipolar plug according to an embodiment of the present invention.

FIG. 6 is a front view of the same.

FIG. 7 is a cross-sectional plan view of a connection structure between a multipolar jack and a multipolar plug according to an embodiment of the present invention.

[Explanation of symbols]

J Multipolar jack 10 Body 11 Body main part 12 Cylindrical part 15 Concave part 17 Flat surface 21, 22, 23, 24 Electrodes from first pole to fourth pole (main electrode on multipolar jack side) 25 Fifth pole (Movable electrode) 25a Movable electrode mounting piece 26 Additional electrode (fixed electrode) forming the sixth pole 26a fixed electrode mounting piece L1 Dimension from the axis of the cylindrical portion to the contact point of the fixed electrode L2 cylindrical shape Distance between the axis of the part and the contact point of the movable electrode P Multipolar plug 50 Shaft part 61, 62, 63, 64 Electrodes from the first to fourth poles (main electrode on the multipolar plug side) 66 Sixth pole Additional electrode to be formed (movable electrode) 65 Additional electrode to form the fifth pole (fixed electrode) L1 Distance from the axis of the shaft to the contact of the movable electrode L2 Distance from the axis of the shaft to the contact of the fixed electrode

Claims (11)

[Claims] 1. Inside a body integrally having a main body portion and a cylindrical portion protruding forward of the main body portion, inserted through the cylindrical portion at a position concentric with or substantially concentric with the cylindrical portion. A multi-pole jack having a plurality of main electrodes electrically connected to a plurality of main electrodes provided in front and rear on a shaft portion of the multi-pole plug to be formed, respectively, wherein two places around the cylindrical portion are provided. Each of the additional electrodes is separately provided, and the additional electrode on one side serves as a fixed electrode positioned so as not to be displaceable at a fixed position with respect to the cylindrical portion, and the additional electrode on the other side contacts and separates from the cylindrical portion. Each of the movable electrodes is formed as an elastically displaceable movable electrode, and a distance between the axis of the cylindrical portion and the contact of the fixed electrode is larger than a distance between the axis of the cylindrical portion and the contact of the movable electrode. The fixed electrode contacts Serial around the shaft portion of the multipolar plug 2
A multi-pole jack, wherein a contact of one of two additional electrodes provided at a location contacts a contact of the movable electrode and a contact of the other electrode contacts the contact of the other side. 2. The fixed electrode is housed in a recess formed on the outer periphery of the tubular portion, and the movable electrode is formed by removing a part of the outer periphery of the tubular portion. 2. A flat surface is opposed to the flat surface at an interval.
Multi-pole jack described in. 3. The body main part has a rectangular parallelepiped outer shape that protrudes on both left and right sides of the cylindrical part, and the fixed electrode and the movable electrode are separately arranged on the left and right sides of the cylindrical part. And a fixed electrode mounting piece formed to extend rearward from the fixed electrode and a movable electrode mounting piece formed to extend rearward from the movable electrode, respectively. 3. The multi-pole jack according to claim 1, wherein said jack is fixed to said main body portion on both sides of said portion. 4. The fixed electrode and the movable electrode are arranged such that the main electrode on the multipolar plug side located at the most distal end of the shaft portion inserted into the body is the rearmost part inside the body. Before contacting the main electrode on the multipolar jack side, which is located at the side of the multipolar jack, protruding forward from the front end of the main body portion so as to contact one or both of the two additional electrodes on the multipolar plug side. A multi-pole jack according to any one of claims 1 to 3. 5. A plurality of main electrodes on the multi-pole jack side provided inside the body, forming four poles, three of which are disposed inside the main body part. The remaining one pole is formed by one main electrode protruding inside the cylindrical portion through an opening formed in the cylindrical wall of the cylindrical portion. Multi-pole jack described in Crab. 6. A shaft portion having a plurality of main electrodes arranged in front and rear, and these main electrodes are electrically connected to a plurality of main electrodes provided on the multi-pole jack side, respectively. A single-headed multipolar plug, which is located concentrically with respect to the shaft portion and has the same radial length outside the root portion of the shaft portion with a space between the shaft portion and the base portion. Two additional arc-shaped electrodes that are substantially the same are provided, the entirety of one additional electrode is formed as an arc-shaped fixed electrode, and the other additional electrode is moved toward and away from the base of the shaft. It is formed as an elastically displaceable arcuate movable electrode, and the distance between the axis of the shaft and the contact of the movable electrode is shorter than the distance between the axis of the shaft and the contact of the fixed electrode. The contact of the fixed electrode is 2 provided in the
A multipolar plug, wherein one of the two additional electrodes is in contact with a contact on one side, and the contact on the other side is in contact with a contact of the movable electrode. 7. The movable electrode is curved in a mountain shape protruding in a direction approaching the shaft portion, and the top of the mountain portion is formed as a contact point of the movable electrode, and the mountain portion is fixed to the fixed portion. The multipolar plug according to claim 6, wherein the electrode protrudes inside a virtual circle assumed by extending the electrode in the circumferential direction. 8. The pole according to claim 6, wherein the plurality of main electrodes provided on the shaft form four poles, and the fixed electrode and the movable electrode form another two poles. Multi-pole plug described in any of them. 9. A plurality of main electrodes arranged side by side inside a multi-pole jack-side body integrally having a body main part and a cylindrical part protruding forward of the body main part, A plurality of main electrodes provided side by side on a shaft of a single-headed multipolar plug inserted at a position concentric or substantially concentric with the cylindrical portion through the portion, each of which is electrically connected separately; The contact point of the fixed electrode on the multi-pole jack side, which is positioned so as not to be displaced at a fixed position at one place around the cylindrical portion,
The contact of the movable electrode on the side of the multipolar plug, which is disposed outside the root of the shaft portion and is spaced apart from the root portion and is formed in an arc shape, and contacts the periphery of the cylindrical portion. The contact between the multi-pole jack-side movable electrode, which is disposed at another location so as to be elastically displaceable in the direction of contact and separation with respect to the cylindrical portion, is spaced outside the root portion of the shaft portion from the root portion. The contact point of the arc-shaped fixed electrode on the multi-pole plug side, which is provided with the contact between the fixed electrode on the multi-pole jack side and the contact point of the movable electrode on the multi-pole plug side, The multi-pole jack and the multi-pole plug are characterized by being located at a position closer to the shaft portion than the contact point between the respective contacts of the fixed contact piece of the movable electrode and the fixed electrode on the multi-pole plug side. Connection structure. 10. A tip of the movable electrode on the multi-pole plug side is curved in a mountain shape projecting in a direction approaching the shaft portion, and the top of the mountain portion is formed as a contact point of the movable electrode, and the mountain shape is formed. The connection structure between a multipolar jack and a multipolar plug according to claim 9, wherein the portion protrudes inside a virtual circle assumed by extending the fixed electrode in the circumferential direction. 11. The multi-pole jack-side main electrode and the multi-pole plug-side main electrode each have four main electrodes.
Connection structure between the multipolar jack and the multipolar plug described in No. 0.