JP2840180B2 - Tubular connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket type connector suitable for supplying a large amount of electric power for connecting a power supply side plug and a device side plug.

[0002]

2. Description of the Related Art Conventionally, a connector of this type is, for example, a Japanese Utility Model No.
As disclosed in JP-A-112272, a plurality of conductive segments are arranged in a cylindrical shape to form a socket body having plug insertion holes opened at both ends, and the conductive segment group arranged in the cylindrical shape is formed by a spring band. The plug can be freely inserted and removed by tightening it so that it can be expanded and contracted.
The power supply side from the opening at both ends of the plug insertion hole of the socket body,
When each plug on the device side is pushed in, the conductive segment group expands its diameter against the binding force of the spring band, allows press-fitting of the plug, and makes pressure contact between each conductive segment and the plug. The conductive segment is configured to be reduced in diameter by the contraction force of the spring band.

[0003]

In the above prior art, the conductive segment of the cylindrical socket body and the plug can be stably contacted by the contraction force of the spring band, but the socket body is adjusted to the shape of the plug. If the number of conductive segments is changed, the number of conductive segments cannot be maintained because the cylindrical shape cannot be maintained. It has the disadvantage that it cannot be adjusted.

In addition, since the electrical contact resistance between the cylindrically arranged conductive segments and the plug is large, the amount of heat generated during energization is large, and furthermore, a harmful magnetic field is generated in the socket body by a large current. Have.

[0005]

According to the present invention, as a means for solving the above-mentioned problems, a plurality of unit conductive segments are arranged in a cylindrical shape and a socket body having a plug insertion hole opened at both ends is formed. In a connector for wrapping a unit conductive segment group in a radially scalable manner by winding a spring band around an outer peripheral surface of a socket body, a part of the unit conductive segment group is replaced with a unit insulating segment, and a unit is placed between the unit conductive segments. The configuration is such that an insulating segment is interposed.

[0006]

According to the present invention, a unit insulating segment having the same shape as a unit conductive segment is formed, and the unit insulating segment is replaced with a part of a unit conductive segment group constituting a cylindrical socket body, and a unit is provided between the unit conductive segments. By interposing the insulating segment, it is possible to adjust the number of unit conductive segments and secure the conduction capacity according to the rating of the device while securing the cylindrical shape of the socket body. Even if the number of unit conductive segments is reduced, the cylindrical state can be properly maintained, so that the spring effect by the spring band can be exerted without fail and uniform and highly reliable connection with the plug can be secured.

[0007]

According to the present invention, a unit having a desired current carrying capacity can be easily obtained by preparing and placing unit conductive segments and unit insulating segments of the same shape in advance and selecting the number of both segments. In addition, it can be used for mass production and cost can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the present invention will be described with reference to a case where a tubular connector 1 is formed using only conductive segments.

As shown in FIG. 7, the cylindrical connector 1 has a socket body 2 formed by arranging a plurality of unit conductive segments 11 each having a substantially arc-shaped cross section and forming openings at both ends of the cylindrical shape. A plug insertion hole 12 is formed.

Each of the unit conductive segments 11 is a conductive strip having the same shape as each other, and is manufactured by, for example, cutting, forging, casting, or the like of a metal material.

More specifically, each unit conductive segment 11 has an inner arc surface 11a having substantially the same curvature as the cylindrical insertion portions 5 and 6 of the plugs 3 and 4, and an outer arc surface 1 facing the inner arc surface 11a.
1c and an inclined surface 11b coupled between the inner arc surface 11a and the outer arc surface 11c. The inclined surfaces 11b of the unit conductive segments 11 are adjacent to each other as shown in FIG. The socket main body 2 is formed by arranging the socket main body 2 in a cylindrical shape, and a plug insertion hole 12 opened at both ends of the socket main body 2 is defined in the cylindrical socket main body 2. Or the inner arc surface 1
1a is finished in a plane to make the plug insertion hole a polyhedron.

On the outer peripheral surface of the cylindrical socket body 2,
A plurality of annular grooves 13 are formed at intervals in the axial direction of the socket body 2, and a spring band 14 made of a coil spring is wound around the annular grooves 13 to form the cylindrical socket body 2.
Are combined to form the connector 1. As a result, the spring band 14 applies an equal contraction force to the unit conductive segments 11 in the annular groove 13 and the unit conductive segments 1
The first group can be expanded in diameter against the binding force (contraction force) of the spring band 14, and can be reduced in diameter according to the contraction force.

According to the present invention, the plurality of unit conductive segments 1 are provided.
1 are arranged in a cylindrical shape to form a socket main body having plug insertion holes 12 opened at both ends, and a spring band 14 is wound around the outer peripheral surface of the socket main body so that the unit conductive segment group can be radially expanded and contracted. In the bound connector, a part of the unit conductive segments 11 is replaced with unit insulating segments 15 and 15 ', and the unit insulating segments 15, 15' are interposed between the unit conductive segments 11. It is a connector.

The unit insulating segments 15 are made of, for example, nylon 66 such as heat-resistant plastic having an insulating property, and have the same shape as the unit conductive segments 11.

That is, the unit insulating segment 15 has an inner arc surface 15 a having the same curvature as the unit conductive segment 11,
The unit conductive segment 11 comprises an outer arc surface 15c facing the inner arc surface 15a, and an inclined surface 15b diverging toward the outer arc surface coupled between the inner arc surface 15a and the outer arc surface 15c. To the same shape as.

That is, a sectional shape and length equivalent to that of the unit conductive segment 11 are provided.

The unit insulating segments 15 are interposed between the unit conductive segments 11 by replacing a part of the unit conductive segments 11 constituting the cylindrical socket body 2. At this time, according to the rating of the connected device, the unit insulation segment 1
5 is selected, and the unit insulating segments 15 are arranged between the unit conductive segments 11 in a balanced manner.

When the unit insulating segment 15 having the same shape as that of the unit conductive segment 11 is interposed between the unit conductive segments 11, the socket body 2 becomes the outer arc surface 11 of the unit conductive segment 11.
c and the outer arc surface 15c of the unit insulating segment 15 continuously maintain a required cylindrical shape, and at the same time, the unit conductive segment 1
The inner arc surface 11a of the unit 1 and the inner arc surface 15a of the unit insulating segment 15 define a plug insertion hole 12 of a required diameter which opens continuously at both ends. The two inner arc surfaces 11a and 15a may be finished in a plane to make the plug insertion hole 12 a polyhedron.

FIG. 3 shows, by way of example, an arrangement pattern in which a part of the group of unit conductive segments 11 of the socket body 2 in which eight unit conductive segments 11 are arranged in a cylindrical shape is replaced with a unit insulating segment 15. As shown in A), the unit conductive segments 11 and the unit insulating segments 15 are alternately arranged to form a cylindrical shape. Alternatively, as shown in FIGS. 3B and 3C, the unit insulating segments 15 are arranged in balance with a plurality of unit conductive segments 11 interposed therebetween. Alternatively, although not shown, the number of intervening unit insulating segments 15 may be singular.

The cylindrical socket body 2 can be adjusted to a required current carrying capacity while maintaining the cylindrical shape by setting the number of intervening unit insulating segments 15 according to the rating of the device to be connected.

FIG. 4 shows another example of the mode of interposition of the unit insulating segments 15.

As shown in the figure, the unit insulating segment 15 is divided and interposed in the axial direction of the socket body 2. That is, the unit insulating segment 15 is divided into a plurality of parts in the longitudinal direction, and the divided insulating segment 15 ′ is divided into unit conductive segments 1 along the axial direction of the socket body 2.
Intervene between 1

As shown in FIG. 5, the above-mentioned divided insulating segments 15 'are interposed at intervals between the conductive segments 11, and the heat emission holes 16 are formed between the divided insulating segments 15'.

As shown in FIG. 6, the unit insulating segment 15 is provided with a heat release hole 17 which is opened on the inner surface of the plug insertion hole 12 and the outer surface of the socket body 2.

After the connection with the plugs 3 and 4, the formed heat release holes 16 and 17 effectively release the heat generated by the socket body 2 when energized. In combination with the above-described effect of reducing the amount, cooling of the socket body 1 is promoted, and burning of the plug and damage of the good conductive plating layer on its surface are prevented.

The cylindrical socket body 2 with the unit insulating segments 15 interposed therebetween is provided with an annular groove 13 on its outer peripheral surface under the same conditions as when only the unit conductive segments are used, and the spring band 14 is wound around this groove. Thus, the unit conductive segments 11 and the unit insulating segments 15 can be elastically expanded and contracted in the radial direction of the socket body 2 by the binding force of the spring band 14, that is, the spring effect.

On the other hand, the plugs 3 and 4 have plate-shaped joints 7 and 8 as means for connecting to the electric power side and the equipment side, respectively, and mounting holes 9 and 10 are respectively provided in side surfaces of the joints 7 and 8. Then, the device side or the power side joint is brought into close contact with both side surfaces of the joints 7, 8, and is bolted through the mounting holes 9, 10.

In this manner, the fixing plug 3 is pressed into the plug insertion hole 12 penetrating the cylindrical socket body 1 from one end opening against the spring band 14, and the plug 4 which can be freely inserted and removed from the other end opening is inserted. When the cylindrical insertion portions 5 and 6 of the plugs 3 and 4 are press-inserted as shown in FIG.
The contact with the plugs 3 and 4 is ensured by the contraction force of the spring band 14 while uniformly expanding the diameter.

That is, the plugs 3 and 4 are in pressure contact with the unit conductive segments 11 and the inner surfaces of the unit insulating segments 15 and 15 ′ under the same conditions, respectively. The conductive capacity is adjusted to the insulated contact and the unit conductive segment 11 while maintaining the press-fitting contact state properly, and the conduction capacity is adjusted.

[0031]

According to the present invention, a unit insulating segment having the same shape as a unit conductive segment is formed, and this unit is replaced with a part of a unit conductive segment group constituting a cylindrical socket main body to replace the unit conductive segment. By interposing a unit insulating segment in the connector, it is possible to provide a connector having a current carrying capacity corresponding to the rated current of the device. By utilizing this, a highly reliable connection can be achieved with a uniform contact pressure with the plug.

[0032]

The unit conductive segment and the unit insulating segment can cope with mass production of each segment, and only by adjusting the number of the unit conductive segment and the unit insulating segment,
It is possible to provide a connector having an intended current-carrying capacity, and to reduce the cost of the connector as a whole.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a connector according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a state where a plug is pressed into a socket body.

3 (A) to 3 (C) are cross-sectional views of a socket main body respectively illustrating arrangement patterns of a unit conductive segment and a unit insulation.

FIG. 4 is a perspective view of a connector in which a unit insulating segment is divided and interposed between unit conductive segments.

FIG. 5 is a perspective view of a connector in which heat release holes are formed between the divided unit insulating segments shown in FIG. 4;

FIG. 6 is a perspective view of a connector in which a unit insulating segment provided with a heat release hole is interposed between unit conductive segments.

FIG. 7 is a front view showing a state in which unit conductive segments are arranged in a cylindrical shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector 2 Socket body 3, 4 Plug 11 Unit conductive segment 12 Plug insertion hole 14 Spring band 15 Unit insulating segment 16 Heat release part 17 Heat release hole

Claims (4)

(57) [Claims] 1. A group of unit conductive segments formed by arranging a plurality of unit conductive segments in a cylindrical shape and having a socket body having plug insertion holes opened at both ends, and wrapping a spring band around an outer peripheral surface of the socket body. A cylindrical connector characterized in that a unit of the unit conductive segment group is replaced with a unit insulating segment, and a unit insulating segment is interposed between the unit conductive segments. 2. The tubular connector according to claim 1, wherein said unit insulating segment is divided and interposed in the axial direction of the socket body. 3. A tubular connector according to claim 1, wherein said unit insulating segment is provided with a heat release hole which opens on an inner surface of said plug insertion hole and an outer surface of said socket body. 4. The connector according to claim 1, wherein said unit insulating segments are formed of heat-resistant plastic.