JP6489906B2 - Cable equipment - Google Patents

Description

  The present invention relates to a cable device in which a connector is attached to an end portion of a composite cable.

  A terminal member 100 is known which is attached to a terminal of a composite cable having a plurality of cores such as an optical fiber and an electric wire, holds each core, and connects the terminal of the composite cable to a connector (for example, Patent Document 1). reference).

  FIG. 7 shows a terminal structure of a conventional composite cable. The terminal member 100 attached to the end of the composite cable in which the optical fiber 101 and the electric wire 102 are covered with the outer skin 103 includes a cylindrical body 104 having a through hole 104a through which the optical fiber 101 is inserted, and an outer periphery of the cylindrical body 104. And a caulking ring 105 for crimping and fixing the electric wire 102 and the outer skin 103. That is, when the optical fiber 101 and the electric wire 102 are separately held and fixed inside and outside the cylindrical body 104 and the tip of the composite cable is connected to the connector, the optical fiber and the electric wire are prevented from interfering with each other, and the optical fiber is damaged. Is preventing.

JP 2014-38272 A (published February 27, 2014)

  However, in the above prior art, when the electric wire 102 is crimped and fixed to the outer periphery of the cylindrical body 104, the electric wire 102 may be damaged.

  In this invention, when connecting the composite cable containing several core wires, such as an optical fiber and an electric wire, to a connector, the cable apparatus which prevented damage to each core wire is proposed.

  The cable device of the present invention is a cable device in which a connector is attached to an end portion of a composite cable, the composite cable having a first core wire and a second core wire and a covering covering them, and the end of the composite cable. A holding member that is attached to a portion and fixes the composite cable to the connector, the holding member having a through hole through which the first and second core wires are inserted, and the first core disposed in the through hole It comprises a straightening member having a straightening hole through which only a wire is inserted, and a crimping ring for crimping and fixing the coating on the outer periphery of the holding member.

  In the above configuration, since the first and second core wires are inserted through the through holes of the holding member, an external force such as caulking is not applied to the first and second core wires. Further, since the first and second core wires are aligned and separated by the aligning member disposed in the through hole, interference between the first and second core wires can be prevented. Furthermore, since the coating is fixed by crimping to the outer periphery of the holding member, the composite cable can be firmly connected to the holding member. For this reason, interference of each core wire can be prevented and damage to each core wire can be prevented.

  In the cable device, an insertion groove in which the second core wire is disposed may be formed on an inner wall of the through hole.

  According to the said structure, a 2nd core wire can be positioned reliably in a through-hole, and interference of a 1st core wire and a 2nd core wire can be prevented more reliably.

  In the cable apparatus, the wire-shaping member includes a first wire-shaping member disposed on one end side of the through-hole and a second wire-shaping member disposed on the other end side of the through-hole, One core wire may be configured to be inserted through each of the wire alignment holes of the first and second wire alignment members.

  According to the above configuration, since the first and second core wires are aligned at two locations, interference between the first and second core wires can be prevented more reliably. In addition, for example, when the fluid resin material is filled in the through hole, the first and second straightening members provided at both ends of the through hole prevent the fluid resin material from flowing out from the inside of the through hole. it can.

  In the cable device, the inside of the through hole may be filled with resin.

  According to the said structure, while being able to prevent the interference of the 1st and 2nd core wire which penetrates the inside of a through-hole more reliably, the position shift of a 1st and 2nd core wire can be prevented.

  In this cable device, the holding member may have light permeability.

  According to the said structure, the inside of the said through-hole can be filled with photocurable resin, and the resin in a through-hole can be hardened easily by light irradiation.

  The holding member of the cable device includes a body portion having the through hole and a flange portion projecting outward along an opening edge of one end of the body portion, and the flange portion is accommodated in the connector. Thus, the holding member may be fixed to the connector.

  According to the said structure, a holding member can be fixed to a connector simply and reliably.

  In the present cable device, a step defining the position of each of the wire-shaping members may be provided on the inner walls of both end portions of the through hole.

  According to the above configuration, each wire-shaping member does not enter the center of the through-hole, and when filling the inside of the through-hole with resin or the like, the injection port for resin or the like is blocked or filled by the wire-shaping member. The problem that the space becomes smaller can be solved.

  In the composite cable of the present cable device, the first core wire may be an optical fiber, and the second core wire may be an electric wire.

  According to the above configuration, since the optical fiber and the electric wire have different functions and different diameters (sizes), each core wire is held in a straight line and separated, and an external force such as caulking is applied to each core wire. It can be said that it is suitable for a cable device configured not to be added.

  ADVANTAGE OF THE INVENTION According to this invention, in a manufacturing process, the cable apparatus with little possibility of damage to a 1st core wire and a 2nd core wire can be provided.

(A) is sectional drawing which shows a structure when the cable apparatus in one Embodiment of this invention is cut | disconnected by the XY plane in a figure, (b) is X in the figure. It is sectional drawing which shows a structure when cut | disconnecting by -Z plane. It is a perspective view which shows the structure of the cable holder of the cable apparatus. It is a disassembled perspective view which shows the terminal structure of the composite cable of the cable apparatus. (A) is a perspective view which shows the terminal structure of the composite cable of the cable apparatus, (b) is sectional drawing which follows the AA 'line in (a). It is sectional drawing which shows the inlet of the cable holder of the cable apparatus. It is sectional drawing which shows the modification of the cable holder of the cable apparatus. It is a perspective view which shows the terminal structure of the conventional cable apparatus.

  Hereinafter, an embodiment of a cable device according to the present invention will be described in detail with reference to FIGS.

[Overall configuration of cable device 10]
FIG. 1A is a cross-sectional view showing a configuration when the cable device 10 according to the present embodiment is cut along the XY plane in the drawing, and FIG. 1B is a cross-sectional view of the present embodiment. It is sectional drawing which shows a structure when the cable apparatus 10 is cut | disconnected by the XZ plane in a figure. Note that X in the figure indicates the direction of cable extension of the cable device 10, Y in the figure indicates the parallel direction of the cable cores, and Z in the figure indicates a direction perpendicular to the X and Y directions. .

  As shown in FIGS. 1A and 1B, the cable device 10 holds the composite cable 3, the connector housing (connector) 5, and the terminal portion of the composite cable 3, and connects the composite cable 3 to the connector housing ( A cable holder (holding member) 13 fixed to the connector 5 and a boot 6 are provided.

  The composite cable 3 includes five optical fibers 1a to 1d (first core wire in the present invention), two electric wires 2a and 2b (second core wire in the present invention), these optical fibers 1a to 1d, and electric wires. The tension member 16 and the sheath 20 (coating in the present invention) covering 2a and 2b are included.

  In the following description, the optical fibers 1a to 1d and the electric wires 2a and 2b may be referred to as “core wires”, and the strength member 16 and the sheath 20 may be referred to as “coating”.

  The tip of the composite cable 3 is split into two coverings (strength body 16 and sheath 20) and peeled off to expose the optical fibers 1a to 1d and the electric wires 2a and 2b.

  The exposed optical fibers 1 a to 1 d and the electric wires 2 a and 2 b extend through the connector housing 5 through the through holes 13 a of the cable holder 13 and are connected to the circuit board 52 accommodated in the connector housing 5. Yes. In addition, the tip portion of the cover (strength body 16 and sheath 20) that has been split into two is crimped and fixed to the outer periphery of the cable holder 13 by a crimping ring 15.

  The connector housing 5 has a hollow rectangular parallelepiped shape and includes a front wall portion 5a, a rear wall portion 5b, a peripheral wall portion 5c, and an inner wall portion 5d. The front wall portion 5a, the rear wall portion 5b, and the inner wall portion 5d are parallel to each other, and the inner wall portion 5d is disposed between the front wall portion 5a and the rear wall portion 5b. The peripheral wall portion 5c is arranged perpendicular to the front wall portion 5a and the rear wall portion 5b. Openings 51a, 51d, and 51b are provided in the central portions of the front wall portion 5a, the inner wall portion 5d, and the rear wall portion 5b, respectively. A circuit board 52 is accommodated in a space sandwiched between the front wall portion 5a and the inner wall portion 5d, and the opening 51a of the front wall portion 5a serves as an insertion port for a connection portion of another device.

  The boot 6 is a flexible member having a cylindrical portion 6a and a tapered portion 6b. The boot 6 is disposed so that the tip of the boot 6 (tip of the cylindrical portion 6a) is in close contact with the rear wall portion 5b of the connector housing 5. The rear end (the rear end of the tapered portion 6 b) is arranged so as to be in close contact with the outer periphery of the composite cable 3. Further, the boot 6 covers the portion where the coating is split into two and the coating is separated from the outer periphery of the optical fibers 1 a to 1 d and the electric wires 2 a and 2 b.

  Accordingly, the boot 6 has a function of suppressing local bending of the composite cable 3 and a function of preventing entry of foreign matters such as dust, dust, and water into the composite cable 3.

  The cylindrical portion 6a of the boot is provided with a convex portion (protruding portion) 6c protruding inward so as to be parallel to the rear wall portion 5b.

  The cable holder 13 includes a body portion 13b having a through hole 13a, and a flange portion 13c projecting outward from the tip of the body portion 13b along the opening edge of the through hole.

  A cylindrical first straightening member 11 and a second straightening member 12 are disposed inside the through hole 13a of the body portion 13b. And while the optical fibers 1a-1d pass through the inside of the cylindrical 1st wire-shaping member 11 and the 2nd wire-shaping member 12, electric wire 2a * 2b is the outer side of the 1st wire-shaping member 11 and the 2nd wire-shaping member 12. Through.

  The flange portion 13c is fitted into a space 5e surrounded by the inner wall portion 5d, the rear wall portion 5b, and the peripheral wall portion 5c of the connector housing 5, and the body portion 13b passes through the opening 51b of the rear wall portion 5b and passes through the opening 51b. It is stored in the cylinder part 6a. As a result, the cable holder 13 is fixed to the connector housing 5.

The details of the structure for holding the end portion of the composite cable 3 by the cable holder 13 will be described later. The outer periphery of 13 is fixed by pressure.

  Further, the optical fibers 1a to 1d and the electric wires 2a and 2b of the composite cable 3 pass through the inside of the taper portion 6b of the boot 6, pass through the through hole 13a of the cable holder 13 and the opening 51d of the inner wall portion 5d, and then the circuit board 52. To.

  The circuit board 52 includes a light receiving element that converts optical signals output from the optical fibers 1a to 1d into electric signals, and a light emitting element that converts electric signals into optical signals and inputs the optical signals to the optical fibers 1a to 1d. An active element is mounted. For this reason, the cable device 10 according to the present embodiment may be referred to as an “active optical cable”.

<Details of composite cable holding structure>
Details of the holding structure of the terminal portion of the composite cable 3 in the cable device 10 will be described below.

(Cable holder (holding member) 13)
FIG. 2 is a schematic perspective view showing the appearance of the cable holder 13.

  As shown in FIG. 2, the cable holder 13 includes a cylindrical body portion 13b having a through-hole 13a and a flange portion 13c that projects outward along the through-hole opening edge on one end side of the body portion 13b. ing.

  The cable holder 13 is made of resin and is made of a material having optical transparency. Further, the flange portion 13c, which is one end, is fitted and fixed in the space 5e of the connector housing 5 (connector), and functions as a holding member that holds the composite cable (not shown).

  The composite cable 3 is fixed to the cable holder 13 by sandwiching and covering the body portion 13b with a caulking ring 15 described later.

The cable holder 13 separates and holds the optical fibers 1a to 1d and the electric wires 2a and 2b by the first and second straightening members 11 and 12 disposed in the through hole 13a, and the interference between these core wires. Is preventing.
(Linear structure)
FIG. 3 is a perspective view showing an outline of a straight line structure of the optical fibers 1a to 1d and the electric wires 2a and 2 in the through hole 13a.

  The first and second wire-straightening members 11 and 12 arranged in the through hole 13a are rectangular parallelepiped elastic members made of rubber or the like. As shown in FIG. A straightening hole 11a for inserting only the optical fibers 1a to 1d is formed, and a straightening hole 12a for inserting only the optical fibers 1a to 1d is also formed in the second straightening member 12. The first straightening member 11 is disposed at one end of the through hole 13a, the second straightening member 12 is disposed at the other end of the through hole 13a, and the optical fibers 1a to 1d inserted through the respective straightening holes 11a and 12a are mutually connected. They are arranged in a row so as to be adjacent (Y direction in the figure).

  The through hole 13a penetrating the body portion 13b has a substantially oval cross section, and the first and second straightening members 11 and 12 are respectively arranged at substantially the center, and the electric wires 2a and 2b are inserted through the arc portions at both ends thereof. Insertion grooves 13f and 13g are formed for the purpose. The electric wire 2a passes through the insertion groove 13f that is one side of the through hole 13a, and the electric wire 2b passes through the insertion groove 13g that is the other side of the through hole 13a. Thus, the optical fibers 1a to 1d and the electric wires 2a and 2b held by the cable holder 13 are arranged in a line.

(Casting structure)
4A and 4B schematically show a caulking structure for covering the cable holder, in which FIG. 4A is a perspective view of the cable held by the cable holder, and FIG. 4B is a view taken along the line AA ′ in FIG. It is sectional drawing.

  As shown in FIG. 4A, the cable holder 13 covers the composite cable 3 (strength body 16 and sheath 20) with a caulking ring 15 at the end of the body portion 13b opposite to the flange portion 13c. Is tightened.

  The sheath (strength 16 and sheath 20) that is split into two at the front end of the composite cable 3 is respectively applied to the two straight portions of the body 13b having a substantially long cylindrical cross section, and is annularly crimped on the outer periphery thereof. A ring 15 is externally fitted. Further, crimping is performed from both side surfaces (vertical direction in FIG. 4B) so that the extra length of the caulking ring 15 is narrowed on the outer periphery of the two arc portions of the body portion 13b having a substantially long cylindrical section. . As a result, as shown in FIG. 4B, the caulking ring 15 is formed with protruding portions 15a protruding in the longitudinal direction of the cross section of the body portion 13b at the arc portions at both ends of the body portion 13b. The coating addressed to the straight portion of the portion 13b is crimped so as to be tightened from the periphery. In addition, the convex part 6c of the boot 6 is engaged with the protrusion part 15a, and the boot 6 is mounted | worn.

  Although not shown in FIG. 1, the body 13b of the cable holder 13 is provided with an injection port 13e for injecting a photocurable resin, as shown in FIG. The resin is filled into the through hole 13a from the injection port 13e while the composite cable 3 is passed. At this time, the first and second straightening members 11 and 12 inserted into one end and the other end of the through-hole 13a function as a sealing plug. Since the cable holder 13 is made of a light transmissive material, the resin in the through hole 13a is cured by irradiating the cable holder 13 with light, and the composite cable 3 (the optical fibers 1a to 1d and the electric wires 2a. 2b) can be fixed and protected. The inlet 13e has a diameter larger than that of the wires 2a and 2b so that the inlet 13e is not blocked by the wires 2a and 2b passing through both side portions (insertion grooves 13f and 13g) of the through-hole 13a. Yes.

[Method of Manufacturing Cable Device 10]
<Manufacturing method of cable equipment>
A method for manufacturing the cable device having the above configuration will be described below.

  First, the boot 6 is temporarily attached to the composite cable 3. Here, the boot 6 is put on standby at a position far from the end of the composite cable 3 through the composite cable 3 from the tapered portion 6b of the boot 6.

  Next, the caulking ring 15 is temporarily attached to the composite cable 3. Also in this case, as in the case of the boot 6, the caulking ring 15 is passed from the end of the composite cable 3, and the caulking ring 15 is made to stand by at a position far from the end of the composite cable 3.

  Subsequently, the coating at the tip of the composite cable 3 is split into two to expose the optical fibers 1a to 1d and the electric wires 2a and 2b.

  The exposed optical fibers 1a to 1d are passed through the wire-shaping holes 12a of the second wire-shaping member 12.

  The optical fibers 1a to 1d passed through the second wire shaping member 12 are passed through the through holes 13a of the cable holder 13 together with the electric wires 2a and 2b, and the second wire shaping member 12 is fitted to one end of the through hole 13a.

  Subsequently, the optical fibers 1 a to 1 d are passed through the straightening holes 11 a of the first straightening member 11, and the first straightening member 11 is fitted to the other end of the through hole 13 a of the cable holder 13.

  Thereafter, the caulking ring 15 is caulked from the periphery in a state where the strength member 16 and the sheath (cover) 20 are sandwiched between the outer periphery of the body portion 13 b of the cable holder 13. At this time, as shown in FIG. 4B, protrusions 15 a are formed on both sides of the caulking ring 15.

  That is, the process so far is a process of attaching the cable holder 13 which is a holding member to the end portion of the composite cable 3 to hold the composite cable, and each core wire (optical fibers 1a to 1d and optical fibers 1a to 1d and The electric wires 2a and 2b) are inserted and held in the through holes 13a (inside) of the body portion 13b, and the covering (strength body 16 and sheath 20) of the composite cable 3 is secured to the outer periphery of the body portion 13b by the crimping ring 15 A cable holding process for holding the composite cable 3 by crimping is shown. In this cable holding step, the respective core wires are separated and held by the first and second straightening members 11 and 12 arranged in the through hole 13a.

  Next, the flange portion 13 c of the cable holder 13 is fitted into the space 5 e of the connector housing 5 and attached. In this state, the optical fibers 1a to 1d exposed from the first straightening member 11 fitted in the through hole 13a of the cable holder 13, the electric wires 2a and 2b exposed from the through hole 13a, and the circuit board in the connector housing 5 52.

  Next, the resin is filled in the through hole 13 a of the cable holder 13.

  That is, in the process up to here, after the optical fiber and the electric wire of the composite cable 3 held by the cable holder 13 are connected to the circuit board and aligned in the cable holding process described above, the cable holder 13 is made of resin with the cable holder 13 by resin. The fixing process of fixing to is shown.

  Finally, the boot 6 is put on the caulking ring 15 so that the convex part 6 c of the boot 6 is engaged with the protruding part 15 a of the caulking ring 15.

  That is, in the process up to this point, the caulking ring 15 in the state in which the covering (strength body 16 and sheath 20) of the composite cable 3 is fastened to the outer periphery of the body portion 13b of the cable holder 13 in the cable holding step is the boot 6. It is the boot mounting process which covers. Then, when the crimping ring 15 is covered, the projection 6 c that is a projection formed inside the boot 6 is engaged with the protrusion 15 a formed on the crimping ring 15.

  Through the above steps, an active optical cable to which the boot 6 is fixed is formed.

[Modification of Cable Device 10]
For example, in the cable device 10, as shown in FIG. 6, first and second steps 13 p and 13 q are provided in the vicinity of both ends of the through hole 13 a of the cable holder 13, and the first and first steps respectively disposed at both ends of the through hole 13 a The two straightening members 11 and 12 may be prevented from entering the inside of the through hole. This eliminates the problem that the first straightening member 11 and the second straightening member 12 block the resin injection port 13e formed in the through hole, or the resin filling space in the through hole becomes small. be able to.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  The present invention is particularly suitable for cable equipment composed of a photoelectric composite cable including an optical fiber and an electric wire, and a connector having a photoelectric conversion function.

1a to 1d optical fiber (first core wire)
2a ・ 2b Electric wire (second core wire)
3 Composite Cable 5 Connector 6 Boot 10 Cable Device 11 First Wire-Shaping Member
11a Wire-regulating hole 12 Second wire-shaping member (wire-shaping member)
12a Straightening hole 13 Cable holder (holding member)
13a Through-hole 13b Body part 13c Flange part 13u Step 15 Crimp ring 15a Projection part 16 Strength member (cover)
20 Sheath (coating)

Claims (7)

A cable device in which a connector is attached to an end portion of a composite cable,
A composite cable having a first core wire and a second core wire and a covering covering them;
A holding member attached to a terminal portion of the composite cable and fixing the composite cable to the connector, the holding member having a through hole through which the first and second core wires are inserted;
A wire-shaping member that is disposed in the through-hole and has a wire-shaping hole through which only the first core wire passes;
A caulking ring that crimps and fixes the coating to the outer periphery of the holding member;
With
The first core wire is an optical fiber, cable equipment the second core wire, wherein the wire der Rukoto.   The cable device according to claim 1, wherein an insertion groove through which the second core wire passes is formed in an inner wall of the through hole. The wire-shaping member is
A first straightening member disposed on one end side of the through hole;
Including a second linear member disposed on the other end side of the through hole,
3. The cable device according to claim 1, wherein the first core wire is inserted through each of the wire alignment holes of the first and second wire alignment members.   The cable device according to claim 1, wherein the inside of the through hole is filled with a resin.   The cable device according to claim 1, wherein the holding member has light permeability. The holding member has a body portion having the through hole, and a flange portion projecting outward along the opening edge of one end of the body portion,
The cable device according to any one of claims 1 to 5, wherein the holding member is fixed to the connector by accommodating the flange portion in the connector.   The cable apparatus according to claim 3, wherein steps are provided at both ends of the through-hole to define the positions of the wire-shaping members.

Images