JP2014098806A - Branch connector for optical/metal composite cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a branch connector for an optical/metal composite cable capable of branching two metal core wires among optical/metal composite cables for communication without damaging a coated optical fiber.SOLUTION: When a first conductive pressure contact terminal and a second conductive pressure contact terminal are held in an insulating state in an insulating terminal holding member and, thereafter, a terminal cover member is superposed on a terminal holding member, a first cut-in blade is electrically connected to a first metal core wire, and a first branch metal core wire connection part is electrically connected to a first branch metal core wire. Moreover, a second cut-in blade is electrically connected to a second metal core wire, and a second branch metal core wire connection part is electrically connected to a second branch metal core wire. Thereafter, a branching state of two branch metal core wires is held from two metal core wires by grasping the terminal holding member and the terminal cover member by a grasping member. In this way, the two metal core wires among the optical/metal composite cables for communication can be branched without damaging the coated optical fiber.

Description

  The present invention relates to an optical / metal composite cable branch connector, more specifically, an optical / metal composite cable in which an optical fiber core wire for communication and two metal core wires for communication also serving as a tension member are combined. The present invention relates to a branch connector for an optical / metal composite cable for branching two metal core wires.

  In recent years, FTTH (Fiber To The Home) optical communication networks for indoor distribution of optical fiber cables for communication to ordinary homes have become widespread, and accordingly, tension members are arranged in parallel on both sides of the optical fiber cores for communication. A pair of parallel indoor optical fiber cables in which these are covered with a sheath are known. Aside from this, a cable for fixed telephones in which a plurality of metal wires (copper, etc.) are bundled is also drawn indoors. However, separately pulling these communication cables indoors is troublesome and troublesome. Therefore, an optical / metal composite cable for communication in which both cables are covered with an insulating sheath to be bundled has been developed.

  By the way, as a device capable of branching a metal core wire without removing the covering in a branch of a VVF cable (Vinyl insulated Vinyl sheared flat-type cable), for example, a column of the conventional technique of Patent Document 1 The “connector” described in the above is known. This "connector" cuts each insulation sheath and insulation endothelium of the main line side VVF cable and the branch side VVF cable, so that two notch portions that are in contact with the conductive wires of the same polarity of both cables are separated by a predetermined distance. It consists of a metal contact which is formed in an inverted U shape and whose top surface is covered with an insulating resin plate, and a main body made of synthetic resin, and the main body is a half-shaped main body connected by a folding part The structure body and the cover body connected to the body structure body at the connecting portion, and the body structure body have parallel grooves corresponding to half of the wiring holes through which the main line side VVF cable and the branch side VVF cable are respectively inserted. Since two contacts are inserted one by one at a predetermined position, two insertion holes are formed by shifting each positive and negative energization line in the width direction of the cable. The Even more main structural body, in which a pair of grooves corresponding to half of the wiring hole in correspondence with the groove is formed.

In the method of branching the VVF cable by the connector of Patent Document 1, first, the main body components of the main body are folded and combined, and the main line side VVF cable is inserted into the wiring hole formed by the groove and the groove, and another groove is formed. The end of the branch side VVF cable is inserted into another wiring hole formed by the groove and the groove. After that, the contact is inserted and pressed from one of the two insertion holes, and the positive-side conductive wire of the main line side VVF cable is digged in between one cut portion of the inverted U-shaped contact, and the other cut is made. By energizing the positive-side conductive wire of the branch-side VVF cable between the sections, the two conductive wires are electrically connected. Next, from the other insertion hole, another contact is inserted and pressed, and in the same way, the negative side conducting wire of the main line side VVF cable and the negative side conducting wire of the branch side VVF cable are electrically connected, Thereafter, the cover body is covered with the main body constituting body to close the insertion hole.
JP-A-11-214051

However, as described above, a conventional optical / metal composite cable for communication includes a pair of parallel indoor optical fiber cables having two tension members and a cable for a fixed telephone covered with an insulating sheath. It is a collection. For this reason, the number of wires covered by the sheath is increased as compared with the pair of parallel indoor wires, and the number of parts and the manufacturing process of the optical / metal composite cable increase, and the price may increase.
In order to solve this problem, the inventors have made the optical fiber core wire wired indoors and the two metal core wires also serving as tension members parallel to the intermediate portion in the width direction of the optical fiber core wire. We have developed a new pair of indoor / indoor optical / metal composite cables that are integrated by covering them with a sheath in the arranged state.

  By the way, when branching a pair of metal core wires incorporated in a novel optical / metal composite cable, it is conceivable to use the connector of Patent Document 1. However, the connector disclosed in Patent Document 1 is used for branching a VVF cable, and cannot be used for a pair of parallel indoor line type optical / metal composite cables in which an optical fiber core is disposed between two metal cores. If the connector disclosed in Patent Document 1 is used for branching of this new composite cable, the two notches of one of the inverted U-shaped contacts are connected to one metal core of the optical / metal composite cable on the main line side. And cut into each sheath toward one metal core of the branch-side optical / metal composite cable. In addition, both cut portions of the other inverted U-shaped contact are directed toward the other metal core of the optical / metal composite cable on the main line side and the other metal core of the optical / metal composite cable on the branch side. And cut into each sheath. At this time, the pair of cut portions of both contacts may damage the optical fiber core wire on the main line side and the optical fiber core wire on the branch side. As a result, when optical communication is performed by connecting both optical fiber core wires, there is a risk that the amount of attenuation of light increases, and the signal transmission capability is significantly reduced.

  As a result of extensive research, the inventors have developed a new connector for branching a metal core dedicated to this new optical / metal composite cable. That is, the first cutting blade electrically connected to the outside of the first metal core of the optical / metal composite cable, and the first branch core electrically connected to the first branch metal core A first press contact terminal in which the wire connection portion is spaced apart, a second cutting blade electrically connected to the outside of the second metal core wire of the optical / metal composite cable, and a second metal core for branching The second press-contact terminal, in which the second branch core connection part electrically connected to the wire is spaced apart, is held in an insulating state by the insulating terminal holding member, and then the optical / metal composite is applied from the outside. The terminal cover member is superimposed on the terminal holding member so as to press the cable against the first press contact terminal and the second press contact terminal, thereby electrically connecting the first cutting blade to the first metal core wire, First branch core wire connected to one first branch metal core And the branch state of the two branch metal cores from the two metal cores is maintained by electrically connecting the second cutting blades to the second metal cores. As a result, it was found that all the above-mentioned problems could be solved, and the present invention was completed.

  That is, according to the present invention, two metal core wires are connected to an optical fiber core out of an optical / metal composite cable for communication in which an optical fiber core wire and two metal core wires also serving as tension members are combined. An object of the present invention is to provide a branch connector for an optical / metal composite cable that can be branched without damaging the wire.

  According to the first aspect of the present invention, there is provided an optical fiber core wire for communication that is wired indoors and two metal core wires for communication that also serve as a tension member. Among the optical / metal composite cables that are covered and integrated with a sheath in a parallel spaced state with the optical fiber and the optical fiber / metal for branching the two branching metal cores from the two metal cores A branch connector for a composite cable, which is made of a conductive material and cut into one side of the sheath in the width direction, so that one of the two metal core wires is one of the first metal core wires, A first cutting blade electrically connected to a portion on the opposite side of the optical fiber core wire with the axis of the first metal core wire being axisymmetric, and spaced apart from the first cutting blade Of the two branch metal core wires, A first pressure contact terminal having a first branch core wire connection portion electrically connected to the first branch metal core wire on the other side, a conductive material, and the other in the width direction of the sheath By cutting into the side part, in the remaining second metal core wire of the two metal core wires, the optical fiber core wire having the axis of the second metal core wire as the center of line symmetry is defined as A second cutting blade electrically connected to the opposite portion, and a second branching metal core that is spaced apart from the second cutting blade and remains among the two branching metal core wires A first pressure contact terminal having a second branch core wire connecting portion electrically connected to the wire, the first cutting blade and the second cutting blade facing each other, and An insulating terminal holding member that holds the pressure contact terminal and the second pressure contact terminal in an electrically insulated state; and And the first cutting blade is electrically connected to the first metal core wire by being superimposed on the terminal holding member so as to press the cable composite cable against the first press contact terminal and the second press contact terminal. The first branch core wire connecting portion is electrically connected to the first first branch metal core wire, and the second cutting blade is electrically connected to the second metal core wire. And a terminal cover member for electrically connecting the second branch core wire connection portion to the one second branch metal core wire.

According to the first aspect of the present invention, the conductive first pressure contact terminal in which the first cutting blade and the first branch core wire connecting portion are spaced apart from each other on the insulating terminal holding member; The second press contact terminal in which the two cutting blades and the second branch core wire connecting portion are spaced from each other is held in an insulated state. Thereafter, the terminal cover member is overlaid on the terminal holding member, and the optical / metal composite cable is pressed against the first press contact terminal and the second press contact terminal. Accordingly, the first cutting blade is cut into one side portion in the width direction of the sheath, and the second cutting blade is cut into the other side portion in the width direction of the sheath. Finally, the first cutting blade is electrically connected to a portion of the first metal core opposite to the optical fiber core with the axis of the first metal core as the center of line symmetry. And the first branch metal core wire is electrically connected to the first branch core wire connecting portion. In addition, the second cutting blade is electrically connected to a portion of the second metal core wire opposite to the optical fiber core wire with the axis of the second metal core wire being axisymmetric. At the same time, the second branch metal core wire is electrically connected to the second branch core wire connecting portion. In addition, the metal core wires for both branches may be electrically connected to the corresponding branch core wire connecting portions by, for example, a joining method such as fitting before the terminal cover member is superimposed on the terminal holding member. .
As a result, of the optical / metal composite cable for communication that combines the optical fiber core and the two metal cores that also serve as tension members, the two optical fiber cores are damaged. It can be branched without.

The optical / metal composite cable here means one or more communication optical fiber cores wired indoors, and two communication metal core wires wired indoors that also serve as tension members. Are integrated by covering the optical fiber core wire with a sheath in a state where all the core wires are parallel to each other.
An optical fiber core is a core in which a grad having a refractive index lower than that of a core is provided around a core having a high bending rate, and the grad is covered with a plastic resin or the like. The core and the grad are made of quartz glass or synthetic resin having high light transmittance. The number of optical fiber cores used is one or more.

“Branch two branch metal cores from two metal cores” means two of the two metal core wires at the end or in the middle thereof Is electrically connected and branched.
The branching metal core wire (first branching metal core wire, second branching metal core wire) is a conductive wire made of a conductive metal such as copper, aluminum, or steel. The branching metal core wire may be a single metal wire or a stranded wire obtained by twisting a plurality of thin conductive wires. In general, the branching metal core is covered with a synthetic resin such as polyethylene.
As the sheath material, for example, (flame retardant) polyethylene, polyvinyl chloride, or the like can be employed.
As a cross-sectional shape orthogonal to the length direction of the column portion of the sheath, for example, a triangle, a quadrangle, or a polygon that is a pentagon or more can be employed. In addition, the shape may be circular, elliptical, or arbitrary.
As a cross-sectional shape orthogonal to the length direction of the pair of tube portions disposed on both sides in the width direction of the sheath, for example, a circle, an ellipse, a triangle, a quadrangle, or a polygon that is a pentagon or more can be adopted. In addition, an arbitrary shape may be used.

As a material of the first press contact terminal and the second press contact terminal, for example, copper, aluminum, iron, steel, or the like can be adopted.
The shape of the first press contact terminal is arbitrary. However, the first cutting blade cut into one side portion in the width direction of the sheath and electrically connected to the outside of the first metal core, and the first metal core for branching and the electric The first branch core wire connecting portions to be connected to each other must be shaped so as to be spaced apart from each other.
The shape of the second press contact terminal is also arbitrary. However, the second cutting blade that is cut to the other side in the width direction of the sheath and is electrically connected to the outside of the second metal core, and the other second branch metal core and the electric The second branch core wire connecting portions to be connected to each other must be arranged so as to be spaced apart from each other.

Examples of the first cutting blade and the second cutting blade include a vertical blade that is cut perpendicularly to one side portion in the width direction of the sheath, and an inclined blade that is cut obliquely into one side portion of the sheath in the width direction. Can be adopted. Further, the number of used first cutting blades and second cutting blades is arbitrary.
A 1st branch core wire connection part and a 2nd branch core wire connection part are the recessed parts by which the 1st branch metal core wire or the 2nd branch metal core wire is fitted, for example. These may be flat portions or convex portions. When the metal core wire for branching has a sheath (sheath), the sheath of the fitting part is peeled off to expose the core wire (conductor), and the exposed core wire portion becomes the corresponding branch core wire connection part. Mating.

As a material of the terminal holding member, various resins such as plastic having insulation properties can be employed.
The shape of the terminal holding member is arbitrary. For example, a bowl shape, a container shape, etc. are employable.
As a holding structure of the first press contact terminal and the second press contact terminal to the terminal holding member, for example, a pair of recesses are formed on the inner surface of the terminal holding member, and the first press contact terminal and the second press contact terminal are formed on these inner surfaces. These press contact terminals may be stored separately. In addition, both the press contact terminals may be screwed to the inner surface of the terminal holding member.
As a material of the terminal cover member, for example, the same material as that of the terminal holding member having insulation can be adopted.
The shape of the terminal cover member is appropriately changed according to the shape of the terminal holding member to be overlaid.

  According to a second aspect of the present invention, the first cutting blade and the second cutting blade are inclined blades having inclined blade edges, and the first pressure contact terminal and the second pressure contact terminal are: The cutting edge of the first cutting blade and the cutting edge of the second cutting blade gradually approach each other in the direction in which the optical / metal composite cable is pressed against the first pressure contact terminal and the second pressure contact terminal. 2. The branch connector for an optical / metal composite cable according to claim 1, wherein the connector is held by the terminal holding member in an opposing state.

  According to the second aspect of the present invention, the first press contact terminal and the second press contact terminal held by the terminal holding member include a first cutting blade and a second cutting blade, which are light / metal composites. The cables are arranged so as to face each other so that the blade edges gradually approach each other in the pressing direction of the cable against the first pressure contact terminal and the second pressure contact terminal. Therefore, when the terminal cover member is superimposed on the terminal holding member and the optical / metal composite cable is pressed from the outside against the first press contact terminal and the second press contact terminal, both ends of the sheath in the width direction are The first cutting blade and the second cutting blade are always cut from the oblique direction. As a result, the cutting of the first cutting blade and the second cutting blade at both ends in the width direction of the sheath becomes smooth, and the optical fiber core wire is damaged by the contact of the both cutting blades with the optical fiber core wire. Can be eliminated.

According to the first aspect of the present invention, the conductive first pressure contact terminal in which the first cutting blade and the first branch core wire connecting portion are spaced apart from each other on the insulating terminal holding member; And the second press contact terminal in which the two cutting blades and the second branch core wire connecting portion are spaced apart from each other are held in an insulating state, and then the optical / metal composite cable is connected to the first press contact terminal and the second press contact terminal. The terminal cover member is superimposed on the terminal holding member so as to be pressed against the press contact terminal from the outside. Accordingly, the first cutting blade is cut into one side portion in the width direction of the sheath, and the second cutting blade is cut into the other side portion in the width direction of the sheath. Finally, the first cutting blade is electrically connected to a portion of the first metal core opposite to the optical fiber core with the axis of the first metal core as the center of line symmetry. And the first branch metal core wire is electrically connected to the first branch core wire connecting portion. In addition, the second cutting blade is electrically connected to a portion of the second metal core wire opposite to the optical fiber core wire with the axis of the second metal core wire being axisymmetric. At the same time, the second branch metal core wire is electrically connected to the second branch core wire connecting portion.
As a result, of the optical / metal composite cable for communication that combines the optical fiber core and the two metal cores that also serve as tension members, the two optical fiber cores are damaged. It can be branched without.

  According to the second aspect of the present invention, in the terminal holding member, the first press contact terminal and the second press contact terminal, the first cutting blade and the second cutting blade are made of an optical / metal composite cable. The blade tips were arranged in an opposing state where the blade edges gradually approached toward the pressing direction to the first pressure contact terminal and the second pressure contact terminal. Therefore, when the terminal cover member is superimposed on the terminal holding member, the first cutting blade and the second cutting blade are always cut from the oblique direction with respect to both end portions in the width direction of the sheath. As a result, the cutting of the first cutting blade and the second cutting blade at both ends in the width direction of the sheath becomes smooth, and the optical fiber core wire is damaged by the contact of the both cutting blades with the optical fiber core wire. Can be eliminated.

It is a disassembled perspective view of the branch connector for optical / metal composite cables according to Embodiment 1 of the present invention. It is an enlarged plan view orthogonal to the length direction of the branch connector for optical / metal composite cables according to Embodiment 1 of the present invention. It is S3-S3 sectional drawing of FIG. 2 including a partial enlarged view. It is S4-S4 sectional drawing of FIG.

  Hereinafter, a branch connector for an optical / metal composite cable according to an embodiment of the present invention will be described in detail with reference to the drawings. Here, for convenience of explanation, the X1 direction in the figure is the front direction of the branch connector for the metal composite cable, the X2 direction is the rear direction of the branch connector for the metal composite cable, the Y1 direction is the left direction of the branch connector for the metal composite cable, The Y2 direction is the right direction of the metal composite cable branch connector, the Z1 direction is the lower direction of the metal composite cable branch connector, and the Z2 direction is the upper side of the metal composite cable branch connector.

  1 and 2, reference numeral 10 denotes a branch connector (hereinafter referred to as a connector) for an optical / metal composite cable according to Embodiment 1 of the present invention. This connector 10 is used for communication that is long in the X1-X2 direction wired indoors. One optical fiber core wire 11 and each of the first metal core wire 12 and the second metal core wire 13 for communication which are also used as tension members and are long in the X1-X2 direction are connected in the Y1-Y2 direction. Of the pair of parallel indoor line type optical / metal composite cables 15 which are integrated by being covered with a sheath 14 in a parallel spaced state in which the optical fiber core wire 11 is disposed in the middle part in the (width direction), two metals This is an instrument for branching the first branch metal core wire 16 and the second branch metal core wire 17 from the core wires 12 and 13.

As shown in FIG. 3, the optical fiber core wire 11 is a core in which a grad having a refractive index lower than that of a core is provided around a core having a high bending rate and the grad is covered with a plastic resin or the like. The core and the grad are made of quartz glass or synthetic resin having high light transmittance.
Each metal core wire 12 and 13 is one copper wire having a diameter of 0.4 to 0.65 mm.
The sheath 14 is made of flame-retardant polyethylene, and the shape thereof is a substantially rectangular shape whose cross section perpendicular to the length direction is long in the Y1-Y2 direction. V-shaped grooves 14a are respectively formed. Here, the length of the sheath 14 in the Y1-Y2 direction is 2.0 to 3.5 mm, and the maximum length (thickness) in the Z1-Z2 direction is 1.6 to 2.0 mm. The optical fiber core 11 is embedded in the intermediate portion in the Y1-Y2 direction of the sheath 14 thinned by forming the V-shaped groove 14a so that the length direction thereof coincides with the length direction of the sheath 14.
The first branch metal core wire 16 and the second branch metal core wire 17 are each copper wires, and each copper core wire is covered with a polyethylene coating in order to maintain insulation.

  As shown in FIGS. 1 to 4, the connector 10 is made of a conductive material, cuts into one side of the sheath 14, and is electrically connected to the first metal core wire 12. A second press-contact terminal 19 made of a conductive material, cut into the other measuring portion of the sheath 14 and electrically connected to the second metal core wire 17, an insulating material, and the first A terminal holding member 20 that separates and holds the press contact terminal 18 and the second press contact terminal 19 in an insulated state, and the optical / metal composite cable 15 is pressed against the first press contact terminal 18 and the second press contact terminal 19 from the outside. A terminal cover member 21 is provided on the terminal holding member 20.

Hereinafter, these components will be specifically described. For convenience of explanation, the terminal holding member 20 will be described first.
As shown in FIGS. 1 and 3, the terminal holding member 20 is made of plastic, is long in the X1-X2 direction in plan view, has a pair of side plates 20a at both ends in the Y1-Y2 direction, and has a bottom plate 20b. It is a thick rectangular bowl-shaped member. Of the intermediate portion of the terminal holding member 20 in the X1-X2 direction, the bottom plate 24 of the first press contact terminal 18 and the bottom plate 24 of the second press contact terminal 19 are housed in the end portion on the Y1 side and the end portion on the Y2 side. A pair of terminal storage portions 22 having a substantially square shape in plan view are provided.
The first press contact terminal 18 and the second press contact terminal 19 face each other when a corresponding later-described first inclined blade (first cutting blade) 23 or second inclined blade (second cutting blade) 23A is in use. It is the same member which exists only in the difference which is arrange | positioned and accommodated in a pair of terminal accommodating part 22. FIG. Therefore, only the first press contact terminal 18 will be described here.

  The first press-contact terminal 18 is made of, for example, copper, aluminum, iron, steel, and the like, and has a rectangular shape that is long in the Y1-Y2 direction in a plan view and has a 1 This is an inverted T-shaped member in which a single side plate 25 is erected. At the end of the side plate 25 on the Y2 side, first inclined blades 23 that are gradually inclined downward toward the Y2 direction are formed. In addition, at the upper edge of the substantially intermediate portion in the Y1-Y2 direction of the side plate 25, there is one first branch core connection recess (the first branch core connection portion whose length direction is in the Z1-Z2 direction). ) 26 is formed. The first branch core connection recess 26 is a recess into which the tip 16a of the first branch metal core 16 exposed by peeling off the coating is fitted. The second press contact terminal 19 has a second inclined blade 23A at the same position as the first press contact terminal 18 and the distal end portion of the second branch metal core wire 17 exposed by peeling off the coating. A second branch core connection recess (second branch core connection) 27 into which 17a is fitted is formed.

  The terminal cover member 21 is a lid that is thick in a rectangular shape in a plan view that is long in the X1-X2 direction and closes the upper surface opening of the terminal holding member 20. Therefore, the terminal cover member 21 and the terminal holding member 20 overlap in plan view. A single X-side rectangular groove 21a into which the optical / metal composite cable 15 is inserted over the entire length in the X1-X2 direction is formed in the lower portion of the terminal cover member 21 in the middle portion in the Y1-Y2 direction. In addition, one Y-side rectangular groove 21b is formed in the middle portion in the X1-X2 direction in the lower portion of the terminal cover member 21 over the entire length of Y1-Y2. Furthermore, a pair of branched core wire insertion holes 28 that are long in the X1-X2 direction are formed at both ends of the terminal cover member 21 in the Y1-Y2 direction, penetrating the X1-side surface and the X2-side surface, respectively. Has been.

Next, with reference to FIGS. 1-4, the usage method of the connector which concerns on Example 1 of this invention is demonstrated.
As shown in FIG. 1, a conductive first pressure contact terminal 18 in which a first inclined blade 23 and a first branch core wire connecting recess 26 are spaced apart from each other on an insulating terminal holding member 20, The second pressure contact terminals 19 in which the two inclined blades 23A and the second branch core wire connecting recesses 27 are spaced apart are held in an insulated state.
Thereafter, both branch metal core wires 16 and 17 with the sheaths of the end portions 16a and 17a removed are inserted into both branch core wire insertion holes 28, respectively, and an intermediate portion of the optical / metal composite cable 15 is inserted into the X-side rectangular groove 21a. Insert. Next, the terminal cover member 21 is overlaid on the terminal holding member 20, and the optical / metal composite cable 15 is gradually pressed against the first press contact terminal 18 and the second press contact terminal 19 (FIGS. 1, 3 and FIG. 4).

As a result, the first inclined blade 23 is cut into one side portion of the sheath 14 in the width direction, and the second inclined blade 23A is cut into the other side portion of the sheath 14 in the width direction. Finally, in the first metal core 12, the part opposite to the optical fiber core 11 with the axis of the first metal core 12 as the center of line symmetry (partial enlarged sectional view of FIG. 3) The first metal core wire 12 is electrically connected to the X1-Y1 side end of the first metal core wire 12 and the first branch metal core wire 16 is the first branch. It is electrically connected to the core wire connecting recess 26. Further, of the second metal core wire 17, the portion opposite to the optical fiber core wire 11 with the axis of the second metal core wire 17 as the center of line symmetry (in the partially enlarged sectional view of FIG. The second inclined blade 23A is electrically connected to the second metal core wire 12 on the X2-Y2 side end, and the second branch metal core wire 17 is connected to the second branch core wire. It is electrically connected to the recess 27.
At this time, the first press contact terminal 18 and the second press contact terminal 19 held by the terminal holding member 20 are the first inclined blade 23 and the second inclined blade 23 A are the optical / metal composite cable 15. In the direction of pressing against the first press contact terminal 18 and the second press contact terminal 19, the blade tips are arranged to face each other gradually. Therefore, when the terminal cover member 21 is superposed on the terminal holding member 20 and the optical / metal composite cable 15 is gradually pressed against the first press contact terminal 18 and the second press contact terminal 19 from the outside, the width of the sheath 14 is increased. The first inclined blade 23 and the second inclined blade 23A are smoothly cut into both ends in the direction, and the optical fiber core wire 11 is brought into contact with the optical fiber core wire 11 by the inclined blades 23 and 23A. No damage can be done.

  As a result, the electrical branching state of the two branching metal cores 16 and 17 from the two metal cores 12 and 13 by the terminal holding member 20 and the terminal cover member 21 is maintained. As a result, the two metal core wires 12 and 13 of the optical / metal composite cable 15 for communication in which the optical fiber core wire 11 and the two metal core wires 12 and 13 also serving as tension members are combined. Can be branched without damaging the optical fiber core wire 11.

  The present invention is useful, for example, as a technique for using a metal core wire as a communication line, mainly as a telephone line.

10 Branch connector for optical / metal composite cable,
11 Optical fiber core wire,
12 First metal core,
13 Second metal core,
14 sheath,
18 first pressure contact terminal,
19 Second pressure contact terminal,
20 terminal holding member,
21 Terminal cover member,
23 first inclined blade (first cutting blade),
23A second inclined blade (second cutting blade),
26 1st branch core wire connection recessed part (1st branch core wire connection part),
27 Second branch core connection recess (second branch core connection).

Claims (2)

An optical fiber core wire for communication that is wired indoors and two metal core wires for communication that also serve as a tension member are sheathed in a parallel spaced state in which the optical fiber core wire is disposed in the middle in the width direction. Branch connector for optical / metal composite cable for branching two branch metal core wires from the two metal core wires among the optical / metal composite cables coated and integrated with
An axis of the first metal core wire of one of the two metal core wires, made of a conductive material and cut into one side of the sheath in the width direction. A first cutting blade that is electrically connected to a portion on the opposite side of the optical fiber core wire with a center of line symmetry, and the two branching metals spaced apart from the first cutting blade A first pressure contact terminal having a first branch core wire connection portion electrically connected to one of the first branch metal core wires among the core wires;
The axis of the second metal core wire in the remaining second metal core wire of the two metal core wires, which is made of a conductive material and cut into the other side in the width direction of the sheath. A second cutting blade that is electrically connected to a portion on the opposite side of the optical fiber core with a line symmetry center, and the two branching metals spaced apart from the second cutting blade A second press contact terminal having a second branch core wire connection portion electrically connected to the remaining second branch metal core wire among the core wires;
An insulating terminal holding member that holds the first pressure contact terminal and the second pressure contact terminal in an electrically insulated state with the first cutting blade and the second cutting blade facing each other;
The first cutting blade is placed on the first metal core wire by being superimposed on the terminal holding member so as to press the optical / metal composite cable against the first press contact terminal and the second press contact terminal. Electrically connecting the first branch core wire connecting portion to the first first metal core wire for branching, and the second cutting blade to the second metal core wire And a terminal cover member for electrically connecting the second branch core wire connecting portion to the one second branch metal core wire, and a branch connector for an optical / metal composite cable . The first cutting blade and the second cutting blade are inclined blades with respective blade tips inclined,
The first press contact terminal and the second press contact terminal are gradually cut in the first notch toward the pressing direction of the optical / metal composite cable to the first press contact terminal and the second press contact terminal. The branch connector for an optical / metal composite cable according to claim 1, which is held by the terminal holding member in a state where the blade edge of the blade and the blade edge of the second cutting blade are close to each other.

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