JP3313034B2 - Multi-pole plugs, multi-pole jacks and multi-pole connectors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-pole plug in which a multi-pole jack is used as a mating connector, a multi-pole jack in which the multi-pole plug is used as a mating connector, and those multi-pole plugs and multi-pole jacks. And a multi-pole connector.

[0002]

2. Description of the Related Art A connector corresponding to a conventional example of the present invention is described in Japanese Utility Model Publication No. Hei 2-6633. The connector includes a male connector and a female connector, and the male connector is formed by concentrically projecting a cylindrical male terminal piece on a flat connector shell. A plurality of female terminal pieces that are in contact with the male terminal pieces are arranged in a connector housing provided with a circular insertion hole into which the female terminal pieces are inserted.

[0003] Conventionally, a multi-pole plug or a multi-pole jack having a plurality of contact pieces arranged side by side in a horizontally long body has been known.

Meanwhile, in AV equipment, audio equipment, car navigation equipment, and the like, as miniaturization of such equipment is promoted, the miniaturization of multi-pole connectors used in such equipment is also attempted. Is required.

[0005]

However, although the connector described in Japanese Utility Model Publication No. Hei 2-6633 can be used as a multi-pole connector, the cylindrical male terminal piece on the male connector side is connected to the pole. It is necessary to arrange concentrically by the number corresponding to the number, and it is necessary to arrange the female terminal pieces on the female connector side at positions corresponding to the respective male terminal pieces. As the number increases, the overall outer diameter of the male connector and the female connector increases. For this reason, the connector described in the above-mentioned publication has a problem that the larger the number of poles, the larger the external shape cannot be avoided.

[0006] Further, in a multi-pole plug or a multi-pole jack in which a plurality of contact pieces are arranged side by side in a horizontally long body as described above, the more the number of poles, the longer the width becomes. There is a problem similar to the above, in which it is unavoidable that the lateral width becomes longer as the number increases and the external shape becomes larger.

The present invention has been made in view of the above-mentioned problems, and a multi-pole plug, a multi-pole jack and a multi-pole plug which do not increase the outer diameter and the outer shape as the number of poles increases. It is an object of the present invention to provide a multi-pole connector composed of those combinations.

[0008]

According to a first aspect of the present invention, there is provided a multipolar plug having an electrically insulating body having a base and a cylindrical wall protruding from the base integrally connected to each other. A single pin-shaped central electrode protruding from the base into the space surrounded by the cylindrical wall at the axial position of the cylindrical wall, and a plurality of roots of the cylindrical wall at a plurality of circumferential positions on the inner peripheral side of the cylindrical wall; A plurality of inner electrodes, each of which is housed and held in a plurality of first elongated grooves formed from the portion to the tip and whose electrode surfaces are exposed to the space, and a plurality of circumferential electrodes on the outer peripheral side of the cylindrical wall. A plurality of outer electrodes each of which is housed and held in a plurality of second elongated grooves formed from the base to the tip of the cylindrical wall at the location and whose electrode surfaces are exposed to the outside of the cylindrical wall, Is provided.

In the multipolar plug of the present invention, one of the total number of poles is secured by one pin-shaped center electrode, and the remaining pole is secured by a plurality of inner electrodes and a plurality of outer electrodes. And while the arrangement positions of the plurality of inner electrodes are distributed to the inner peripheral side of the cylindrical cylindrical wall of the body,
Since the arrangement positions of the plurality of outer electrodes are allocated to the outer peripheral side of the cylindrical wall, one cylindrical wall is used for both the mounting of the plurality of inner electrodes and the mounting of the plurality of outer electrodes. Therefore, as the number of poles increases, the outer diameter increases and the appearance shape does not increase.

A multipolar plug according to a second aspect of the present invention is the multipolar plug according to the first aspect, in which the first elongated groove for accommodating and holding the inner electrode is formed on the cylindrical wall and the outer electrode is accommodated therein. The position where each of the second elongated grooves to be held with respect to the cylindrical wall is displaced in the circumferential direction of the cylindrical wall.

According to the present invention, the location where the first elongated groove is formed and the location where the second elongated groove is formed are not aligned in the radial direction of the cylindrical wall, so that the wall thickness of the cylindrical wall is reduced to the first elongated groove or the second elongated groove. The size may be set so that any one of the two elongated grooves can be formed. For this reason, it is possible to reduce the thickness of the cylindrical wall and shorten the outer diameter thereof, which is useful for reducing the diameter of the multi-pole plug and, consequently, the external shape.

According to a third aspect of the present invention, there is provided the multipolar plug according to the first or second aspect, wherein the number of the first elongated grooves that accommodates and holds the inner electrode is larger than the number of the first elongated grooves. Each of the second
The number of the elongated grooves is large.

The cylindrical wall on which the first elongated groove and the second elongated groove are formed has a peripheral length on the outer peripheral side longer than that on the inner peripheral side. Focusing on this, in the present invention, the number of the first elongated grooves formed on the inner peripheral side of the cylindrical wall having a shorter peripheral length is reduced, and the second elongated grooves formed on the outer peripheral side of the cylindrical wall having a longer peripheral length are reduced. Since the number of grooves is increased, a plurality of inner electrodes and a plurality of outer electrodes housed and held in the elongated grooves can be easily attached to the cylindrical wall, which means that the outside of the multipolar plug can be easily removed. It is useful to reduce the diameter to promote miniaturization of the external shape. In this regard, as a countermeasure for attaching the inner electrode and a plurality of outer electrodes to the cylinder wall without difficulty, it is conceivable to increase the wall thickness or increase the diameter of the cylinder wall. Is not preferable because the outer diameter of the multi-pole plug becomes large, which leads to an increase in the external shape.

According to a fourth aspect of the present invention, there is provided the multipolar plug according to any one of the first, second and third aspects, further comprising: a center terminal for connecting a lead wire connected to the center electrode; The inner terminal for conducting wire connection connected to the plurality of inner electrodes and the outer terminal for conducting wire connection connected to the plurality of outer electrodes are respectively protruded behind the body. is there.

According to the present invention, the center terminal, the inner terminal,
Since all of the outer terminals protrude behind the base of the body, these terminals do not increase the outer diameter of the multipolar plug, which promotes miniaturization of the multipolar plug. Useful.

According to a fifth aspect of the present invention, there is provided the multipolar plug according to any one of the first, second, third and fourth aspects, wherein the electrode surfaces of the plurality of inner electrodes are respectively provided. The electrode surface is exposed to the space in the entire length region of the first elongated groove portion, and its electrode surface is formed on a curved peripheral surface that is continuous with the inner peripheral surface of the cylindrical wall. A surface is exposed to the outside of the cylindrical wall in the entire length region of each second elongated groove portion, and its electrode surface is formed on a curved peripheral surface that is continuous with the outer peripheral surface of the cylindrical wall. That is.

According to the present invention, since the electrode surface of the inner electrode and the electrode surface of the outer electrode do not protrude inside or outside the cylindrical wall, the electrodes are less likely to be damaged such as bent.

According to a sixth aspect of the present invention, there is provided a multi-pole jack, comprising: a cylindrical inner cylindrical wall; a cylindrical outer cylindrical wall concentric with the inner cylindrical wall; and a concave formed between the cylindrical walls. A body provided with an annular space and having a hole communicating with the inner space of the inner cylindrical wall at the center of the tip of the inner cylindrical wall, and disposed on the inner peripheral side of the inner cylindrical wall. One center contact piece member having elasticity, and a plurality of inner contact piece members having elasticity provided at a plurality of circumferential positions on the inner cylindrical wall;
A plurality of elastic outer contact members provided at a plurality of positions in the circumferential direction of the outer cylindrical wall, and a center contact provided on the center contact member is provided in the inner space of the inner cylindrical wall. And a plurality of the inner contacting members are formed at a plurality of circumferential positions on the outer peripheral side of the inner cylindrical wall. The angled inner contacts, which are housed and held in each of the inner contact members and are provided at the respective distal ends of the inner contact members, project outward into the annular space, and the outer contact members are formed on the outer cylindrical wall. Each of the second elongated grooves formed at a plurality of positions in the circumferential direction is housed and held, and a mountain-shaped outer contact provided at each of the distal ends of the outer contact pieces protrudes inward into the annular space. And on the inner cylindrical wall, Space to permit displacement of the inner side contact is provided on the outer tubular wall, a space that allows the displacement of the outward of the outer contact is provided, is that.

In the multi-pole jack of the present invention, one pole of the total number of poles is secured by one center contact piece.
The remaining pole is secured by the plurality of inner contact members and the plurality of outer contact members. Then, the angled inner contacts of the plurality of inner contact members and the angled outer contacts of the plurality of outer contact members are
Since each of them projects into a concave annular space formed between the inner cylindrical wall and the outer cylindrical wall of the body, the annular space is positioned between a plurality of inner contacts and a plurality of outer contacts. Also used as a deployment position. Therefore, as the number of poles increases, the outer diameter increases and the appearance shape does not increase.

According to a seventh aspect of the present invention, there is provided the multipolar jack according to the sixth aspect, wherein each of the first elongated grooves for accommodating and holding the inner contact member is formed on the inner cylindrical wall; The position where each of the second elongated grooves for accommodating and holding the outer contact piece member with respect to the outer cylindrical wall is displaced in the circumferential direction of the annular space.

According to the present invention, since the plurality of inner contacts and the plurality of outer contacts forming a mountain shape projecting into the annular space are not arranged in the radial direction in the annular space, the diameter of the annular space is reduced. The width in the direction can be made smaller than the width in which the inner contact and the outer contact can be accommodated side by side in the radial direction. Therefore, the outer cylindrical wall is brought closer to the inner cylindrical wall so that the radial space of the annular space can be narrowed, which is useful for reducing the diameter of the multi-pole jack and, consequently, reducing the external shape. The multipole jack of the invention according to claim 8 is the multipole jack according to claim 6 or 7, wherein the outer contact piece is larger than the number of each of the first elongated grooves for accommodating and holding the inner contact member. The number of the second elongated grooves for accommodating and holding the member is large.

The peripheral length of the outer cylindrical wall in which the second elongated groove is formed is longer than the peripheral length of the inner cylindrical wall in which the first elongated groove is formed. Focusing on this, in the present invention, the number of the first elongated grooves formed on the inner cylindrical wall having a short circumference is reduced, and the number of the second elongated grooves formed on the outer cylindrical wall having a long circumference is increased. As a result, the plurality of inner contact members and the plurality of outer contact members housed and held in the elongated grooves can be easily attached to their cylindrical walls, and this means that the outside of the multi-pole jack can be achieved. It is useful to reduce the diameter to promote miniaturization of the external shape. In this regard, it is conceivable that the number of inner contact members attached to the inner cylinder wall and the number of outer contact members attached to the outer cylinder wall are set to the same number to achieve multipolarization. On the other hand, it is necessary to mount a plurality of inner contact members at a high density. On the other hand, a plurality of outer contact members can be attached to the outer cylindrical wall at a low density.

According to a ninth aspect of the present invention, there is provided the multi-pole jack according to any one of the sixth, seventh and eighth aspects, wherein the center terminal for conducting wire connected to the center contact member is provided. And an inner terminal for conducting wire connection connected to the plurality of inner contact members and an outer terminal for conducting wire connected to the plurality of outer contact members are respectively projected to the back of the body. It is.

According to the present invention, the center terminal, the inner terminal,
Since all of the outer terminals protrude behind the body,
These terminals do not increase the outer diameter of the multipolar jack, which helps to promote the miniaturization of the multipolar jack.

[0025] According to a tenth aspect of the present invention, there is provided a multipolar connector comprising:
The multi-pole plug described in claim 1 and the multi-pole jack described in claim 6 are combined, and the cylindrical wall on the multi-pole plug side is provided in the annular space on the multi-pole jack side. The multi-pole plug-side center electrode corresponds to the pin-shaped electrode inserted into the hole on the multi-pole jack side, and is connected to each of the plurality of inner electrodes on the multi-pole plug side. Each of the plurality of inner contact pieces on the multipolar jack side is individually associated with each of the plurality of outer electrodes on the multipolar plug side and the plurality of outer contacts on the multipolar jack side. Each of the one-piece members is individually corresponded, a projection is provided on the outer peripheral side of the cylindrical wall of the multi-pole plug side, and on the inner peripheral side of the outer cylindrical wall of the multi-pole jack side, Place the cylindrical wall on the multi-pole plug side Recesses fittable to said projection is provided by inserting into the annular space of the jack side, and, when said protrusion is fitted to the recess,
Each of the plurality of inner electrodes on the multipolar plug side and each of the plurality of inner contact members on the multipolar jack side, and each of the plurality of outer electrodes on the multipolar plug side and the multipolar jack side And the body on the multi-pole plug side and the body on the multi-pole jack side are positioned so as to correspond to the plurality of outer contact piece members, respectively. is there.

This multi-pole connector is a combination of the multi-pole plug described in claim 1 and the multi-pole jack described in claim 6. Therefore, even when the number of poles is increased, the outer diameter of the multipolar connector is not increased, and the external shape is not enlarged. In this multi-pole connector, when the projection on the multi-pole plug and the recess on the multi-pole jack are not fitted, the cylindrical wall of the multi-pole plug is inserted into the annular space on the multi-pole jack. Can not do it. When the cylindrical wall of the multi-pole plug is inserted into the annular space on the multi-pole jack side, and the projection on the multi-pole plug is fitted into the recess on the multi-pole jack, Center electrode, inner electrode, and outer electrode respectively correspond to the center contact member, inner contact member, and outer contact member on the multi-pole jack side, thereby preventing erroneous insertion of the multi-pole plug and the multi-pole jack. You.

[0027]

FIG. 1 is a rear view showing a multi-pole plug P according to an embodiment of the present invention with its center electrode 25 omitted, and FIG. 2 is a schematic view taken along the line II-II of FIG. 3 is a schematic sectional view taken along the line III-III of FIG. 1, FIG. 4 is a front view of the multipolar plug P, and FIG. 5 is a schematic view of a first contact piece 30 having an inner electrode 31 and an inner terminal 35. FIG. 6 is a schematic perspective view of a second contact piece 40 having an outer electrode 41 and an outer terminal 45, FIG. 7 is a vertical sectional view of a multipolar plug P, and FIG.
FIG. 10 is an enlarged end view taken along line VIII-VIII of FIG.

The multi-pole plug P has a body 10, a center electrode 25, a first contact piece 30, and a second contact piece 40.

As shown in FIG. 7, the center electrode 25 has a spherical head 26, a shaft 28 continuously connected to the head 26 via a small-diameter neck 27, and a base of the shaft 28. And a rod-shaped central terminal 25a concentrically protruding rearward and straight from the large-diameter portion 29 in a concentric manner. The first contact piece 30 shown in FIG. 5 is connected to an elongated inner electrode 31, an engagement piece 32 projecting from the tip of the inner electrode 31 while keeping a step, and a rear part of the inner electrode 31. And a pair of left and right engaging claws 33 and an inner terminal 35 connected to a rear portion of the engaging claws 33 via a narrow neck 34. Are curved in the width direction, and the curved inner peripheral surface is an electrode surface 36. FIG.
The second contact piece 40 shown in FIG. 4 includes an elongated outer electrode 41, an engagement piece 42 projecting from the tip of the outer electrode 41 while maintaining a step, and left and right connected to a rear portion of the outer electrode 41. It is a plate-like electric good conductor having a pair of engaging claws 43 and an outer terminal 45 connected to a rear part of the engaging claws 43 via a narrow neck 44. The outer electrode 41 is It is curved in the width direction, and the curved outer peripheral surface is an electrode surface 46 (see FIG. 8).

The body 10 is a synthetic resin molded body in which a cylindrical base 11 and a cylindrical tube wall 12 protruding concentrically from the base 11 are integrally connected, and has excellent electrical insulation properties. ing. The axis position of the body 10 (the axis 1 shown in FIG. 7)
00 is indicated by an alternate long and short dash line).
A circular through-hole 13 and a large-diameter hole 15 extending rearward of the through-hole 13 through a stepped portion 14 are opened, and around a rear edge of the large-diameter hole 15. The four projecting pieces 16 are projected rearward at 90 ° intervals. As shown in FIGS. 7 and 8, the shaft portion 28 of the center electrode 25 is press-fitted and held in the through hole 13, and the large-diameter portion 29 of the center electrode 25 is engaged with the stepped portion 14, A terminal 25a protrudes from the back of the body 10. The head 26 and the shaft 28 of the center electrode 25 project from the base 11 into the space 17 surrounded by the cylindrical wall 12 at the axial position of the cylindrical wall 12.

As shown in FIG. 3 and FIG. 8, the cylindrical wall 12 is provided at two places on the inner peripheral side of the cylindrical wall 12 at 180 ° apart from each other.
The first elongated groove 18 extends from the root 12a of the second
Are formed, and a through-hole portion 19 is formed in the base portion 11 so as to be continuous with the first elongated groove portion 18.
As can be analogized by referring to FIGS. 1, 2, 3, and 8, the first elongated groove portion 18 has a narrow groove portion 1 having a shape projecting slightly before the tip of the first elongated groove portion 18.
8a, and the through hole 19 is provided with a narrow hole 19a continuous with the narrow groove 18a. The inner electrode 31 of the first contact piece 30 is housed and held in the first elongated groove portion 18, and its electrode surface 36 is exposed to the space 17. Further, the engagement piece 32 of the first contact piece 30 is fitted into the tip of the narrow groove 18a, and the inner terminal 35 projects further to the back of the body 10. Although not shown, the engaging claws 33 of the first contact piece 30 are engaged with the groove walls on both sides of the first elongated groove portion 18 so as to prevent the first contact piece 30 from coming off. I have. The electrode surface 36 of the inner electrode 31 of the first contact piece 30 thus assembled to the body 10 is
Is exposed to the space 17 in the entire length region of the first elongated groove portion 18, and furthermore, its electrode surface 36 is
And a curved peripheral surface that is continuous with the inner peripheral surface. By doing so, since the electrode surface 36 of the inner electrode 31 does not protrude inside the cylindrical wall 12, the inner electrode 31 is hardly damaged by bending or the like.

As shown in FIG. 2 and FIG. 8, the lower end of the cylindrical wall 12 has a second portion extending from the root 12a to the distal end thereof at 90 ° intervals at the outer peripheral side and at the lower end. An elongated groove 21 is formed, and a through-hole 22 is formed in the base 11 so as to be continuous with the second elongated groove 21. As can be inferred from a combination of FIGS. 1, 2 and 8, the second elongated groove 21 has a narrow groove 2 projecting slightly before the tip of the second elongated groove 21.
1a, and a narrow hole portion 22a continuous with the narrow groove portion 21a is provided in the through hole portion 22. The outer electrode 41 of the second contact piece 40 is accommodated and held in the second elongated groove portion 21, and the electrode surface 46 is formed on the cylindrical wall 1.
2 is exposed to the outside. The second contact piece 40
The engagement piece 42 is fitted into the distal end of the narrow groove 21a, and the outer terminal 45 is projected from the back of the body 10. Although not shown, the second
The engaging claw 43 of the contact piece 40 is engaged with the groove wall surfaces on both sides of the second elongated groove portion 21 in a biting manner to prevent the second contact piece 40 from coming off. The electrode surface 4 of the outer electrode 41 of the second contact piece 40 thus assembled to the body 10
6 is exposed to the outside of the cylindrical wall 12 in the entire length region of the second elongated groove portion 21, and the electrode surface 46 of the cylindrical wall 12 is
And a curved peripheral surface that is continuous with the outer peripheral surface. By doing so, since the electrode surface 46 of the outer electrode 41 does not protrude outside the cylindrical wall 12, the outer electrode 41 is less likely to be damaged such as bending.

As can be seen from FIG. 8, the location where the first elongated groove portion 18 is formed on the cylindrical wall 12 and the location where the second elongated groove portion 21 is formed on the cylindrical wall 12 are as follows.
2, the two first elongated grooves 18 and the five second elongated grooves 21 are symmetrically arranged. The cylindrical wall 1 of the body 10
A protrusion 23 is provided at the upper end on the outer peripheral side of 2.

In the multi-pole plug P described above, different conductors 49 are connected to the center terminal 25a, the respective inner terminals 35, and the respective outer terminals 45 by soldering (see FIG. 7). And the thing which connected the conductor 49 to each of the center terminal 25a and all the inner terminals 35 and the outer terminals 45 can be used as an 8-pole multipole plug. In the case where a part of the inner terminal 35 and the outer terminal 45 is not used, the plug can be used as a multipolar plug having 2 to 7 poles. As can be seen from the above, the outer diameter of this multi-pole plug P is the same between the case where the number of poles is used as 2 to 7 and the case where it is used as the number of 8 poles. This means that it is not necessary to increase the outer diameter of the body 10 even if the number of poles is increased if the multi-pole plug P is used up to eight poles. Is achieved.

Further, in this multipolar plug P, the first elongated groove 18 and the second elongated groove 21 are not arranged in the radial direction of the cylindrical wall 12 as shown in FIG. , So that either the first elongated groove 18 or the second elongated groove 21 can be formed. Thus, the cylindrical wall 12
If the wall thickness of the multi-pole plug P is reduced, the outer diameter of the cylindrical wall 12 is shortened, and the external shape of the multipolar plug P is reduced.
In addition, the first elongated groove 1 is formed on the inner peripheral side of the cylindrical wall 12 having the shorter peripheral length.
8 are formed, and five second elongated grooves 21 are formed on the outer peripheral side of the cylindrical wall 12 whose peripheral length is longer than the inner peripheral side.
The angle interval between the locations where the elongated grooves 18 are formed does not become too narrow, and the interval between the formation of the second elongated grooves 21 does not become too wide. The electrode 41 can be attached to the cylindrical wall 12 without difficulty. Further, according to the multipolar plug P, the center terminal 25a, the plurality of inner terminals 35, and the plurality of outer terminals 4
Since all of the terminals 5 protrude behind the body 10, the terminals 25a, 35, and 45 do not increase the outer diameter of the multipolar plug P.

FIG. 9 is a rear view of a multi-pole jack J showing one embodiment of the present invention, FIG. 10 is a schematic sectional view taken along line XX of FIG. 9, and FIG. 11 is a view taken along line XI-XI of FIG. 12 is a schematic perspective view of the center contact piece member 70, and FIG. 13 is a schematic perspective view of the inner contact piece member 80.

The multi-pole jack J is a connector that uses the multi-pole plug P described with reference to FIGS. 1 to 8 as a mating connector.
, An inner contact member 80, and an outer contact member 90.

As shown in FIG. 12, the center contact piece 70 is made of an electric conductor such as metal having elasticity. This center contact piece member 70 is provided with a pin-shaped electrode (the multi-pole plug P).
(Which corresponds to the center electrode 25 of FIG. 3) having a front plate portion 71 having an opening 72 sized to allow insertion of the front plate portion 71, and a pair of elastic contact pieces 73 on both sides of the front plate portion 71 are integrally and rearwardly directed. The connecting pieces 73 are provided with a central contact 74 which is curved in a mountain shape. The mutual interval between the contact pieces 73 is slightly smaller than the thickness of the neck 27 (see FIG. 7) of the center electrode 25 of the multipolar plug P. Further, a pair of mounting pieces 75 are integrally connected to the front plate 71 in a rearward direction, and an engaging claw 76 formed by cutting and raising these mounting pieces 75 and an engaging claw formed by punching are provided. 77 are provided, and furthermore, the center terminal 78 extends rearward from the mounting piece 75.

As shown in FIG. 13, the inner contact piece member 80 is made of an electric conductor such as a metal having elasticity. The inner contact piece member 80 includes a contact piece 82 having an inner contact 81 curved at the tip end, and a pair of engaging claws 84 provided on both sides of a plate piece 83 connected to the contact piece 82. And an inner terminal 85 extending rearward from the plate piece portion 83. The outer contact member 90 includes the inner contact member 8 described above.
The same shape and size as 0 are used. Therefore, as shown in FIG.
Also, a contact piece 92 having an outer contact 91 curved in a mountain shape at the tip end, and a pair of engaging claws provided on both sides of a plate piece 93 connected to the contact piece 92 (not shown in the figure). And an outer terminal 95 extending rearward from the plate portion 93.

As shown in FIG. 9 to FIG.
Is a cylindrical inner cylindrical wall 51, a cylindrical outer cylindrical wall 52 concentric with the inner cylindrical wall 51, and these cylindrical walls 51, 52.
And a synthetic resin molded body having a concave annular space 54 formed therebetween, and is excellent in electrical insulation properties. The inner cylindrical wall 51 and the outer cylindrical wall 52 are integrally connected via a back wall 53. In addition, a hole 55 communicating with the inner space 56 of the inner cylindrical wall 51 is formed at the center position of the tip of the inner cylindrical wall 51.

One center contact piece 70 is provided on the inner peripheral side of the inner cylindrical wall 51. That is, FIG.
As shown in FIGS. 0 and 11, the pair of mounting pieces 75 of the center contact piece 70 are inserted into the grooves 57 formed on the inner peripheral side of the inner cylindrical wall 51, and the coupling claws 76 are fitted into the inner cylindrical wall 51. It is engaged with the bottom surface 59 of the slit-like narrow groove 58 formed on the wall 51 to prevent the groove 51 from coming off. In the center contact piece member 70 provided on the inner peripheral side of the inner cylindrical wall 51 in this manner, as shown in FIG. 9, the contact point 74 is provided symmetrically with respect to an axis passing through the center of the hole 55, and FIG. 10 and FIG.
The opening 72 is provided concentrically with the hole 55 as shown in FIG. Further, a center terminal 78 protrudes behind the body 50.

As can be seen from a combination of FIGS. 9 and 11, first elongated grooves 61 are formed in a slit shape at two places on the outer peripheral side of the inner cylindrical wall 51, which are 180 ° apart from each other. The inner contact members 80 are accommodated and held in the first elongated grooves 61, respectively.
The inside contacts 81 of 0 are protruded outwardly into the annular space 54 on the body 50 side. Further, the inner cylindrical wall 51 is provided with a space 62 that allows the inner contact 81 to be displaced inward. Further, the inner contact member 80
Inside terminal 85 protrudes to the back of the body 50 through the first elongated groove 61. Although not shown, the engaging claws 84 of the inner contact member 80 are engaged with the groove wall surfaces on both sides of the first elongated groove portion 61 in a biting manner to prevent the inner contact member 80 from coming off. I have. In FIG. 9, reference numeral 61a denotes a first elongated groove 61 formed in the back wall 53.
The wide portion 61a forms a passage path of the inner contact 81 when the inner contact piece member 80 is inserted into the first elongated groove 61.

As can be seen from a combination of FIGS. 9 and 10, a second elongated groove 63 is formed in a slit shape at four lower portions and at 90 ° intervals on the outer cylindrical wall 52. The outer contact piece members 90 are accommodated and held in each of the second elongated grooves 63, and the outer contact piece members 9 are
The respective outer contacts 91 of 0 protrude inward into the annular space 54 on the body 50 side. Further, the outer cylindrical wall 52 is provided with a space 64 that allows the outer contact point 91 to be displaced outward. Further, the outer contact member 90
Outside terminal 95 is projected to the back of the body 50 through the second elongated groove 63. Although not shown, the engaging claws of the outer contact member 90 are connected to the second elongated grooves 6.
The inner contact piece member 90 is prevented from coming off by engaging with the groove wall surfaces on both sides of the groove 3 in a biting manner. In FIG. 9,
63a indicates a wide portion of the second elongated groove 63 formed in the back wall 53. The wide portion 63a is a passage path of the outer contact 91 when the outer contact piece member 90 is inserted into the second elongated groove 63. Is formed.

As can be seen from FIGS. 9 to 11, the first
The position where the elongated groove 61 is formed on the inner cylindrical wall 51 and the position where the second elongated groove 63 is formed on the outer cylindrical wall 52 are displaced in the circumferential direction of the cylindrical walls 51 and 52, and The two first elongated grooves 61 and the five second elongated grooves 63 are arranged symmetrically. As shown in FIGS. 9 and 10, a concave portion 65 is provided at an upper end portion on the outer peripheral side of the outer cylindrical wall 52.
5, the projection 23 provided on the body 10 on the side of the multi-pole plug P can be fitted.

In the multi-pole jack J described above,
Different conductors (not shown) are connected to the center terminal 78, the respective inner terminals 85, and the respective outer terminals 95 by soldering. And, the conductors connected to the center terminal 78 and all the inner terminals 85 and the outer terminals 95 can be used as an 8-pole multipole jack. Also,
In the case where a part of the inner terminal 85 and the outer terminal 95 is not used, it can be used as a multi-pole jack having 2 to 7 poles. As can be seen from this, the outer diameter of this multi-pole jack J is the same between the case of using 2 to 7 poles and the case of using 8 poles. This means that it is not necessary to increase the outer diameter of the body 50 even if the number of poles is increased, as long as the multipole jack J is used up to eight poles. Is achieved.

Further, in this multi-pole jack J, the first elongated groove 61 and the second elongated groove 63 are not aligned in the radial direction of the inner cylindrical wall 51 and the outer cylindrical wall 52, and are displaced in the circumferential direction. are doing. Therefore, even if the annular space 54 on the side of the body 50 is also used as the arrangement position of the two inner contacts 81 and the arrangement position of the five outer contacts 91, the inner contact 81 and the outer contact 91 are connected to the annular space 54. In the radial direction. This makes it possible to reduce the diameter of the outer cylindrical wall 52 as much as possible by making the radial space of the annular space 54 as narrow as possible, and by doing so, the appearance of the multipolar jack J. The size is reduced. Moreover, the inner cylindrical wall 5 having a short circumferential length
1, two first elongated grooves 61 are formed on the outer cylindrical wall 52, which is longer than the outer cylindrical wall 52, so that the first elongated grooves 61 are formed at five angular intervals. The inner electrode 31 and the outer electrode 41 forming a large number of poles of eight poles can be easily formed on the inner cylindrical wall 5 without becoming narrower or the interval between the formation of the second elongated groove portions 63 becoming wider.
1 or the outer cylindrical wall 52.

Further, according to the multi-pole jack J, the center terminal 78, the plurality of inner terminals 85, and the plurality of outer terminals 95
Are protruded behind the body 50,
Multi-pole jack J by those terminals 78, 85, 95
Does not increase the outer diameter.

FIG. 14 is a partially cutaway side view showing a connected state of a multipolar connector C according to an embodiment of the present invention.
Is a partially broken plan view showing the connected state of the multipolar connector C.

The multipolar connector C is constituted by a combination of the multipolar plug P and the multipolar jack J described above. Then, the cylindrical cylindrical wall 12 on the multipolar plug P side is formed in the annular space 54 on the multipolar jack J side (see FIGS. 9 to 11).
Can be inserted and removed. Also, the center electrode 2 on the multipolar plug P side
5 can be inserted through the hole 55 of the body 50 on the multi-pole jack J side and the opening 72 of the central contact member 70. Further, each of the two inner electrodes 31 on the multipolar plug P side corresponds to each of the two inner contact members 80 on the multipolar jack J side, and each of the five outer electrodes 41 on the multipolar plug P side Each of them corresponds to each of the five outer contact piece members 90 on the multipolar jack J side.

In this multi-pole connector C, with the projection 23 on the multi-pole plug P aligned with the recess 65 on the multi-pole jack J, the cylindrical wall 12 of the multi-pole plug P is When inserted into the annular space 54, each of the two inner electrodes 31 on the multipolar plug P side and each of the two inner contact piece members 80 on the multipolar jack J side are fitted by the fitting of the projection 23 and the recessed portion 65. Each of the five outer electrodes 41 on the multipolar plug P side corresponds to a respective one of the five outer contact members 90 on the multipolar jack J side. Body 10 and body 50 on the multi-pole jack J side are positioned in their circumferential direction.

When the cylindrical wall 12 of the multi-pole plug P is inserted into the annular space 54 of the multi-pole jack J in a state where the two bodies 10 and 50 are positioned in the circumferential direction as described above, FIG. As shown in FIG. 15, the neck portion 27 of the center electrode 25 is pressed by the center contact 74 of the center contact piece member 70 so that they are electrically conducted, and the electrode surfaces 36 of the two inner electrodes 31 on the multipolar plug P side. Multi-pole jack J for each
The inner contact points 81 of the two inner contact piece members 80 on the side are resiliently connected to each other so that they are electrically conducted, and the electrode surfaces 46 of the five outer electrodes 41 on the multipolar plug P side are connected to the multipolar jack J side. Each of the outer contact points 91 of the five outer contact piece members 90 elastically contacts each other to electrically conduct them.

In this multi-pole connector C, when the projection 23 on the multi-pole plug P and the recessed portion 65 on the multi-pole jack J are not fitted, the cylindrical tube wall 1 on the multi-pole plug P side
2 cannot be inserted into the annular space 54 on the multi-pole jack J side, so that a situation where the multi-pole plug P and the multi-pole jack J are erroneously inserted cannot occur. In FIGS. 14 and 15, in order to simplify the description, FIGS.
The same reference numerals are given to the same portions as those described above, and the detailed description is omitted.

Although a handle 200 made of synthetic resin is mounted on the multipolar plug P shown in FIGS. 14 and 15, the handle 200 may have a shape other than that shown.

In the multipolar plug P according to the present invention, although the number of the pin-shaped center electrodes 25 is limited to one, the number of the inner electrodes 31 and the outer electrodes 41 is not limited to the illustrated example. Also in the multi-pole jack J, the number of the center contact members 70 is limited to one, but the numbers of the inner contact members 80 and the outer contact members 90 are not limited to the illustrated example. The same applies to the multi-pole connector C which is a combination of the multi-pole plug P and the multi-pole jack J.

[0055]

According to the multi-pole plug, the multi-pole jack and the multi-pole connector of the present invention, as the number of poles increases, the outer diameter does not increase and the external shape does not increase. Therefore, there is an effect that ultra-miniaturization and multi-polarization of a multi-pole plug, a multi-pole jack, and a multi-pole connector composed of a combination thereof can be simultaneously achieved.

[Brief description of the drawings]

FIG. 1 is a rear view of a multipolar plug according to an embodiment of the present invention, with a center electrode thereof omitted;

FIG. 2 is a schematic sectional view taken along line II-II in FIG.

FIG. 3 is a schematic sectional view taken along line III-III in FIG.

FIG. 4 is a front view of the multipolar plug.

FIG. 5 is a schematic perspective view of a first contact piece.

FIG. 6 is a schematic perspective view of a second contact piece.

FIG. 7 is a vertical sectional view of a multipolar plug.

FIG. 8 is an enlarged end view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a rear view of the multi-pole jack showing one embodiment of the present invention.

FIG. 10 is a schematic sectional view taken along line XX of FIG. 9;

FIG. 11 is a schematic sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is a schematic perspective view of a center contact piece member.

FIG. 13 is a schematic perspective view of an inner contact member.

FIG. 14 is a partially cutaway side view showing a connected state of the multipolar connector according to the embodiment of the present invention.

FIG. 15 is a partially broken plan view showing a connected state of the multipolar connector.

[Explanation of symbols]

 P Multipolar plug J Multipolar jack C Multipolar connector 10 Body 11 Base 12 Tube wall 12a Root portion of tube wall 17 Space 18 First elongated groove 21 Second elongated groove 23 Projection 25 Center electrode 25a Center terminal 31 Inner electrode 35 Inner Terminal 36 Electrode surface 41 Outer electrode 45 Outer terminal 46 Electrode surface 50 Body 51 Inner tube wall 52 Outer tube wall 54 Annular space 55 Hole 56 Inner tube wall inner space 61 First elongated groove 62, 64 Space 63 Second elongated groove 65 Recessed portion 70 Center contact member 74 Central contact 78 Center terminal 80 Inner contact member 81 Inner contact 85 Inner terminal 90 Outer contact member 91 Outer contact 95 Outer terminal 100 Axis of cylindrical wall

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 24/02

Claims (10)

(57) [Claims] An electrically insulating body in which a base and a cylindrical wall protruding from the base are integrally connected;
One pin-shaped center electrode protruding from the base into the space surrounded by the cylindrical wall at the axial position of the cylindrical wall, and a root portion of the cylindrical wall at a plurality of circumferential positions on the inner peripheral side of the cylindrical wall A plurality of inner electrodes respectively housed and held in a plurality of first elongated grooves formed from the front end to the end thereof, and a plurality of inner electrodes whose electrode surfaces are exposed to the space, and a plurality of circumferential positions on the outer peripheral side of the cylindrical wall A plurality of outer electrodes which are respectively housed and held in a plurality of second elongated grooves formed from the base to the tip of the cylindrical wall and whose electrode surfaces are exposed to the outside of the cylindrical wall. A multipolar plug, comprising: 2. A location where each of the first elongated grooves for accommodating and holding the inner electrode is formed on the cylinder wall, and a location where each of the second elongate grooves for accommodating and holding the outer electrode is formed on the cylinder wall. 2. The multipolar plug according to claim 1, wherein the position of the plug is shifted in a circumferential direction of the cylindrical wall. 3. The method according to claim 1, wherein the number of each of the second elongated grooves that accommodates and holds the outer electrode is larger than the number of each of the first elongated grooves that accommodates and holds the inner electrode. Multipolar plug described. 4. A conductive wire connecting central terminal connected to the center electrode, a conductive wire connecting inner terminal connected to the plurality of inner electrodes, and a conductive wire connecting terminal connected to the plurality of outer electrodes. 4. The multipolar plug according to claim 1, wherein each of the outer terminals protrudes rearward of the body. 5. The electrode surfaces of the plurality of inner electrodes are exposed to the space over the entire length of each of the first elongated grooves, and the electrode surfaces are continuous with the inner peripheral surface of the cylindrical wall. The electrode surfaces of the plurality of outer electrodes are exposed to the outside of the cylindrical wall in the entire length region of each of the second elongated grooves, and the electrode surfaces are formed on the outer peripheral surface of the cylindrical wall. The multipolar plug according to any one of claims 1, 2, 3, and 4, wherein the multipolar plug is formed on a curved peripheral surface that is continuous with the surface. And a cylindrical inner cylindrical wall, a cylindrical outer cylindrical wall concentric with the inner cylindrical wall, and a concave annular space formed between the cylindrical walls. A body in which a hole communicating with the inner space of the inner cylinder wall is opened at a center position of a tip portion of the inner cylinder wall, and one elastic contact piece member disposed on the inner peripheral side of the inner cylinder wall; A plurality of inner contact pieces having elasticity provided at a plurality of locations in the circumferential direction of the inner tubular wall, and a plurality of outer contact pieces having elasticity provided at a plurality of locations in the circumferential direction of the outer tubular wall; A center contact provided on the center contact piece member is provided at a position in the inner space of the inner cylindrical wall at a position where the center contact can contact a pin-shaped electrode inserted into the hole. A first elongated member in which an inner contact member is formed at a plurality of circumferential positions on the outer peripheral side of the inner cylindrical wall. The inner contact members, which are housed and held in the respective portions and are provided at the respective distal ends of the inner contact members, project outwardly into the annular space, and the outer contact members are connected to the outer cylinder. Each of the second elongated grooves formed at a plurality of positions in the circumferential direction of the wall is housed and held, and the mountain-shaped outer contacts provided at the respective distal end portions of the outer contact members face inward into the annular space. The inner cylindrical wall is provided with a space that allows the inner contact to be displaced inward, and the outer cylindrical wall is provided with a space that allows the outer contact to be displaced outward. Multi-pole jack. 7. A location where each of the first elongated grooves for accommodating and holding the inner contact member is formed on the inner cylindrical wall, and an outer side of each of the second elongate grooves for accommodating and holding the outer contact member. 7. The multi-pole jack according to claim 6, wherein a position formed with respect to a cylindrical wall is displaced in a circumferential direction of the annular space. 8. The number of each of the second elongated grooves for accommodating and holding the outer contact member is greater than the number of each of the first elongated grooves for accommodating and holding the inner contact member. A multi-pole jack according to claim 7. 9. A conductor connecting central terminal connected to the center contact member, a conductor connecting inner terminal connected to the plurality of inner contact members, and a plurality of outer contact members. The multi-pole jack according to any one of claims 6, 7, and 8, wherein each of the provided outer terminals for conducting wire connection protrudes behind the body. 10. The multi-pole plug described in claim 1 and a combination of the multi-pole jack described in claim 6, wherein the cylindrical wall of the multi-pole plug has a cylindrical wall. The center electrode on the side of the multipolar plug corresponds to the pin-shaped electrode inserted into the hole on the side of the multipolar jack, and a plurality of the electrodes on the side of the multipolar plug. Each of the inner electrodes and each of the plurality of inner contact pieces on the multipolar jack side are individually associated with each other, and each of the plurality of outer electrodes on the multipolar plug side and the multipolar jack side. Each of the plurality of outer contact members is individually associated with each other, and a projection is provided on an outer peripheral side of the cylindrical tubular wall on the multipolar plug side, and the outer cylindrical wall on the multipolar jack side is provided. On the inner circumference side, A concave portion is provided in which the projection can be fitted by inserting the recording tube wall into the annular space on the multipolar jack side, and when the projection is fitted in the concave portion, the multipolar jack is inserted. Each of the plurality of inner electrodes on the plug side and each of the plurality of inner contact members on the multi-pole jack side, and each of the plurality of outer electrodes on the multi-pole plug side and the plurality of the multi-pole jack side. A multi-pole connector in which the body on the multi-pole plug side and the body on the multi-pole jack side are positioned so that each of the outer contact members corresponds to each other.