JP5827903B2 - Double-wire optical cable connector - Google Patents

Description

  The present invention relates to an optical cable connector for connecting ends of a plurality of optical fibers.

The conventional optical cable connector is capable of connecting a single wire, but the inventor of the present application has previously proposed an “optical cable connector” of Patent Document 1 in which multiple wires can be easily connected.
However, this "optical cable connector" is not easy to mount the optical fiber on the ferrule, which is the optical fiber connection part of the clamp connection terminal, so it is difficult to mechanize the manufacturing work of the product with the optical fiber connected to the clamp connection terminal. Met.

JP2008-180822

  In order to solve the above-mentioned problems, the present invention makes it possible to easily connect the ends of a plurality of optical fibers constituting an optical cable to the clamp connection terminal of the optical cable connector, and the connection work to the clamp connection terminal that has been performed manually. It is an object of the present invention to provide an optical cable connector for double wires that can be mechanized.

In order to solve the above-mentioned problem, in the optical cable connector for double wires of the present invention, in the invention of claim 1, a cylindrical joining ferrule having a rod-shaped core ferrule detachably inserted therein is arranged on the tip side. A pair of clamp connection terminals, a cylindrical connector for connecting the two joint ferrules therein, and a connection maintaining means for connecting the distal ends of the two joint ferrules to fix the clamp connection terminal and the connector; An optical cable connector for double wires composed of a transparent gel material filled between the tips of both joint ferrules in the connector, wherein the joint ferrules are respectively provided on the outer and inner tip sides of the cylindrical tube. a flat outer bonding surface and an inner bonding surface is formed, a planar joining surface of the front end side of the core ferrule, is tightly on inner joint surface of the joint ferrule, the joint off On the opposing peripheral surfaces of the rule and the core ferrule, a groove and a convex ridge that fits into the groove are provided in parallel to the center line direction of the joint ferrule and the core ferrule, and on the facing circumferential surface of the joining ferrule, and oppositely arranged an TotsuTakashijo that fits into the center line parallel to the direction groove strip and the concave groove line of said joining ferrule and core ferrule, the outside of the joint ferrule between the bonding surface and the inner joint surface, and the in core ferrule, fixed both to be determined by the groove strip and TotsuTakashi conditions on both sides of the junction ferrule and said core ferrule within each of said connecting child position, the optical fiber insertion hole for inserted through continuous linear optical fiber, characterized in that a plurality penetrating formed in parallel with the center line direction of the joint ferrule and core ferrule.

In the invention described in claim 2, in the above invention, the connection maintaining means includes: a) a flange provided at an intermediate portion of the joining ferrule, and a tubular connecting portion formed integrally with a rear portion of the flange; A cylindrical clamp portion is provided at the intermediate portion of the clamp connection terminal so as to be able to reciprocate in close contact with the outer periphery of the connector having the joining ferrule inserted therein, and c) a spring stop portion is provided on the rear inner surface of the clamp portion. A pressing spring is mounted between the spring stopper and the rear surface of the flange in a spring mounting space formed between the outer peripheral surface of the tubular connecting portion and the inner peripheral surface of the clamp portion,
d) A hook groove is formed in the clamp portion of each of the clamp connection terminals by notching from the tip side to form a hook portion, and the pressing spring is inserted into the outer periphery near both ends of the connector when entering the hook portion. Protrusions that press the tip portions of the joining ferrule with a biasing force are provided.

  According to a third aspect of the present invention, in the above invention, a flange-shaped stopper that connects an optical cable guide tube to the tubular connecting portion and presses a rear end portion of the clamp portion from the rear side on the outer periphery of the optical cable guide tube. It was set up.

  According to a fourth aspect of the present invention, in the above invention, a female screw is formed on the outer peripheral surface of the tubular connecting portion and can be screwed onto the inner peripheral surface of the distal end portion of the optical cable guide tube. A screw is formed.

  According to a fifth aspect of the present invention, in the above invention, the inner peripheral surface of the connector has a C-shaped split tube shape that can be closely fitted to the outer peripheral surface of the connector, and the clamp connection terminal at the time of connection An attachment / detachment stopper having elasticity that is substantially the same width as that between the tips of the clamp portions is attached to the connector.

  In the present invention, since the ferrule through which the optical fiber is inserted has a double structure in which the core ferrule can be inserted into the joint ferrule, when the optical fiber is mounted, the core ferrule is taken out from the joint ferrule, It is possible to insert all of the core ferrules into the optical fiber insertion holes one by one and then attach them to the joint ferrule.

Since the optical fiber insertion hole is exposed in the core ferrule taken out from the joining ferrule, the optical fiber can be easily inserted into the optical fiber insertion hole, and all of the plurality of optical fibers can be easily inserted in a short time.
Moreover, since the joining ferrule and the core ferrule are inserted while being guided accurately in the center line direction while being restrained in a non-rotating state by the concave groove and convex ridge, the core ferrule having an optical fiber attached to the joint ferrule When inserted, the tips of the optical fibers protruding from the plurality of optical fiber insertion holes of the core ferrule are automatically matched to the opening positions of the respective optical fiber insertion holes of the bonding ferrule, and the optical fiber insertion holes of the bonding ferrule are collectively assembled as they are. It becomes possible to insert each optical fiber into the cable.
This makes it very easy to attach the optical cable to the connector.

  As described above, the installation work of the optical fiber to the optical cable connector for double wires includes the installation of the plurality of optical fibers to the core ferrule and the insertion of the core ferrule to which the plurality of optical fibers are installed into the optical fiber insertion hole. Each stage can be easily performed in two stages, and the entire optical fiber installation work, which is difficult to handle thin and easy to bend to the optical cable connector for double wires, can be easily performed by mechanical connection work such as a robot. Is possible.

In addition, after the connection of the optical fiber to the joining ferrule is over, the next connection between the clamp connection terminals and the connector is performed by connecting the clamp connection terminals and the connector by the connection maintaining means. In this case, the joining ferrules on both sides are fitted at the position where the openings of the respective optical fiber insertion holes are matched by fitting the concave groove and the convex ridge to the connector so that they are engaged with each other. Since the optical fiber can be inserted linearly, and the groove and ridge are long in the direction of the center line of the joint ferrule and core ferrule, misalignment hardly occurs even if force is applied from the outside. Become. Therefore, it can be used for transportation equipment such as automobiles and airplanes that generate severe vibrations and cables for information control systems in factories.
In addition, stable optical fiber optical connection is possible via a transparent gel material, and since the transparent gel material itself is in a soft gel state, the connector can be easily separated for maintenance after connection. Time and cost can be significantly reduced.

In the invention according to claim 2, the projection of the connector, which is the connection maintaining means, is hooked on the hook portion of the clamp portion, and the joining ferrules on both sides in the connector are pressed by the force of the pressing spring. It is possible to connect to a state and maintain that state.
And, after the connection, since the concave groove and the convex ridge formed so as to match each other on the opposing peripheral surface are closely fitted, the core ferrule and the joint ferrule when connecting each optical fiber, The joining ferrule and the connector are firmly fixed by the force of the pressing spring at the mutual fixed position, and almost no deformation occurs even when external force such as vibration or impact is applied to the connecting portion.
In addition, most of the components are a combination of cylindrical objects, and all the materials can be made of plastic except for the metal pressure spring, which makes it possible to significantly reduce the weight and cost.

In the invention according to claim 3, since the stopper provided on the optical cable guide tube presses the clamp part so that it does not come out rearward, the tube of the joining ferrule remains connected to the optical cable guide pipe and the clamp part. It can be separated from the connecting portion.
For this reason, when each optical fiber is connected to the core ferrule and the joining ferrule, if the optical cable guide tube and the clamp portion are separated from the core ferrule and the joining ferrule, each optical fiber can be easily attached to the core ferrule and the joining ferrule. It becomes possible.

  In the invention according to claim 4, since the tubular connection portion of the joining ferrule and the optical cable guide tube are screwed together, the optical cable guide tube can be easily attached and detached only by rotating, and each optical fiber can be connected and disconnected. When the connector is disconnected for maintenance or the like, the joining ferrule and the optical cable guide tube can be separated, and the time and cost required for the work can be reduced.

  In the invention described in claim 5, after the clamp connection terminal and the connector are fixed by connecting each optical fiber, an attachment / detachment stopper is mounted so that the connector between the clamp portions is opened and covered. Then, in a state where the protruding portion of the connector is hooked on the hooking portion of the clamp portion, it is impossible to return the latching groove, and there is no possibility that the clamp connection terminal is detached from the connector.

(A) which shows the connection state of this invention is a perspective view, (b) is a vertical side view. (A) is a vertical side view showing a state in which the clamp connection terminal and the connection terminal are separated, and (b) is a vertical side view showing a state in which only one clamp connection terminal is connected to the connection terminal. It is a perspective view which shows the state which decomposed | disassembled components. It is a perspective view of a clamp part. It is a perspective view which shows the convex ridge and concave groove corresponding to a joining ferrule part. It is a perspective view which shows the convex ridge and concave groove corresponding to a core ferrule part. FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 2 is a cross-sectional view taken along the line CC of FIG.

Embodiments of the present invention will be described in detail below.
As shown in FIG. 2 (A), the optical cable connector for double wires of the present invention is located between a pair of clamp connection terminals 2 and 3 facing both left and right symmetrically on the center line, and both the clamp connection terminals 2 and 3. A cylindrical connector 1 that is connected, a connection maintaining means 4 that fixes the clamp connection terminals 2 and 3 and the connector 1 connected to each other, and a space between tips of both joint ferrules in the connector. It is composed of a transparent gel material 27.

As shown in FIGS. 1 and 3, the clamp connection terminals 2 and 3 have a flat outer joint surface 5 a and an inner joint surface 5 b on the distal end side of the outer and inner distal ends of the connecting portion 15. A cylindrical joining ferrule 5 integrally formed with a tubular connecting portion 7 is disposed at the rear portion.
In the cylinder space 9 of the joint ferrule 5, removably to fit the core ferrules 10 of the round bar formed into a planar shape of the joint surface 10a of the distal end side.
The joint surface 10 a of the core ferrule 10 can be brought into close contact with the inner joint surface 5 b of the joint ferrule 5.
Further, the joint ferrule 5 and the core ferrule 10 are provided with optical fiber insertion holes 8 and 11 through which the straight optical fiber F can be inserted at fixed positions of the joint ferrule 5 and the core ferrule 10 in the direction of the center line of the joint ferrule 5 and the core ferrule 10. Are formed in parallel with each other.

The optical fiber insertion holes 8 and 11 are thin holes through which a plurality of optical fibers F in the optical cable K can be passed one by one. FIGS. 5 and 6 show examples of three optical fiber insertion holes 8 and 11. Although FIG. 7, FIG. 8 and FIG. 9 show six examples, the number of optical fiber insertion holes 8 and 11 may be adjusted to the number of optical fibers of the optical cable K, and the number is limited to three and six. Is not to be done.
The target optical fiber F uses a normal glass or plastic optical fiber F, and the diameter of the optical fiber F using the diameters of the optical fiber insertion holes 8 and 11 can be smoothly inserted so that any diameter can be supported. To form.

  When the core ferrule 10 is inserted into the in-cylinder space 9 of the joint ferrule 5, the air between the joint surface 10a of the core ferrule 10 and the inner joint surface 5b of the joint ferrule 5 is approached by both. Since it is discharged outside through the optical fiber insertion hole 8 of the joining ferrule 5, the joining face 10a of the core ferrule 10 and the inner joining face 5b of the joining ferrule 5 can be easily brought into close contact with each other.

  As shown in FIG. 2, the connector 1 is arranged between the clamp connection terminals 2 and 3 so that the joint ferrule 5 can be inserted from both sides, and the outer joint surfaces 5a of the joint ferrule 5 on both sides are connected to each other. Is possible closely.

  Then, an optical fiber is inserted into and closely contacted with the optical fiber insertion holes 8 and 11, and between the outer joint surfaces 5a of the joint ferrules 5 on both sides, as shown in FIG. The gel material 27 is filled.

Regarding the materials used as parts, the pressing spring 14 to be used is made of steel, and the joining ferrule 5, the core ferrule 10 and the connector 1 are made of hard plastic, but other parts are made of metal or plastic. Can be used.
If the joint ferrule 5, the core ferrule 10 and the connector 1 are made of the same material and hard plastic, they can all have the same expansion coefficient, thereby preventing slack and thermal deformation caused by gaps due to temperature changes. As a result, it is possible to produce a product having high shape stability as a whole.

  Also, as shown in FIG. 3, a long optical cable guide tube 18 is connected to the tubular connection portion 7 of the clamp connection terminals 2 and 3 at the rear. The optical cable guide pipe 18 is hardened at the connecting portion 15 to the tubular connecting portion 7 on the front end side, and the rear end side is thin and soft, or a fine cut is made to the optical fiber protruding rearward. It is preferable not to apply any bending stress.

  As shown in FIG. 3, the connection between the tubular connection portion 7 of the joining ferrule 5 and the optical cable guide tube 18 is performed by forming a male screw on the outer peripheral surface of the tubular connection portion 7 of the joining ferrule 5. It is possible to form a female screw to be screwed into the male screw on the inner peripheral surface of the tip, and to screw both of them together.

As shown in FIG. 6, the joint ferrule 5 and the core ferrule 10 and the core ferrule 10 are fixed at positions where the optical fiber insertion holes 8 and 11 are aligned with each other. The concave groove 23 and the convex ridge 22 fitted in the concave groove 23 are opposed to each other in parallel with the direction of the center line 10.
Further, as shown in FIG. 5, the joint ferrule 5 and the core ferrule 10 are arranged on the opposite peripheral surfaces of the connector 1 and the joint ferrule 5 at a fixed position where the optical fiber insertion holes 8 on both sides coincide with each other. In parallel with the center line direction, the groove 21 and the protruding ridge 20 fitted in the groove 21 are opposed to each other.

  In each figure, a convex ridge 20 is formed on the inner peripheral side of the connector 1 of the joining ferrule 5 and the core ferrule 10, and the concave groove 21 is formed on the outer peripheral side of the joining ferrule 5, Moreover, although the convex ridge 22 was formed in the inner peripheral side of the joining ferrule 5, and the said concave groove 23 was formed in the outer peripheral side of the said core ferrule 10, although the said connection was shown on the contrary, A concave groove is formed on the inner peripheral side of the child 1, a convex ridge is formed on the outer peripheral side of the joint ferrule 5, and a concave groove is formed on the inner peripheral side of the joint ferrule 5. An aspect in which convex ridges are formed on the outer peripheral side of the child ferrule 10 is also possible, and can be formed in concavities and convexities opposed to each other.

The number of the optical fiber insertion holes 8 and 11 according to the present invention is three in FIGS. 5 and 6, and six in FIGS. 7, 8 and 9.
The connection part of the optical cable connector for double wires will be described in more detail by taking the case of six as an example.
7, 8, and 9 show cross sections of the connector 1, the joint ferrule 5, and the core ferrule 10 when the optical cable connector for double wires of the present invention is connected.
7 is a cross-sectional view taken along line AA in FIG. 1B, FIG. 8 is a cross-sectional view taken along line BB in FIG. 1B, and FIG. FIG. 2 is a cross-sectional view taken along the line C-C in FIG.

As shown in these drawings, on each of the opposing peripheral surfaces, the joint ferrule 5 and the core ferrule 10 are provided with a groove 23 and the recess parallel to the center line direction of the joint ferrule 5 and the core ferrule 10. Convex ridges 22 that fit into the grooves 23 are oppositely arranged, and the connector 1 and the joint ferrule 5 are paired with concave grooves 21 and convex ridges 20 that fit into the concave grooves 21. Set up.
In each of the above drawings, the groove grooves 23 and 21 and the convex ridges 22 and 20 are each formed in four sets. However, stability and component accuracy when a multi-line optical cable connector is connected and fixed are shown. In order to maintain the above, it is preferable that the number is 3 or more and 6 or less.
In addition, as shown in FIG. 7, it is preferable that the positions of the sets in the circumferential direction are equally spaced in order to stably align the centers.

  The shapes of the groove grooves 23 and 21 and the protruding ridges 22 and 20 are overlapped with each other in a circular arc shape in each figure, but are not limited to this shape, and are U-shaped or V-shaped. It is formed in a cross section and has a shape that can be in close contact with each other at least in the center. If a slight gap is formed except for the center, when the optical fiber is connected, the joining ferrules on both sides are released by releasing the high pressure air sandwiched between the connector 1 and the joining ferrules 5 on both sides. 5 can be smoothly brought into close contact with each other.

The sizes of the grooves 23 and 21 and the convex ridges 22 and 20 may all be equal. However, if one set has a different size, the other grooves 23 and 21 and the convex ridges are formed. Since 22 and 20 cannot be fitted to each other, the fitting position is fixed at one place, and it is prevented from being inserted into an incorrect position.
Moreover, in order to prevent a mistaken insertion position, if one place is made into a different space | interval among several sets of the space | interval of the circumferential direction, the said joint ferrule 5 and the said core ferrule 10 will be inserted in the incorrect position. Is prevented.

  As shown in FIGS. 7, 8, and 9, the groove grooves 23, 21 and the convex ridges 22, 20 are accurately fitted in close positions, and after connector connection, The core ferrule 10 and the core ferrule 10 when the long groove grooves and the convex ridges in the center line direction of the joint ferrule 5 and the core ferrule 10 formed so as to match each other on the opposing peripheral surface connect the optical fibers F and The joining ferrule 5, the joining ferrule 5, and the connector 1 are firmly fixed at mutual fixed positions, so that deformation does not occur even when external force such as vibration or impact is applied to the connection portion.

The connection maintaining means 4 fixes the clamp connection terminals 2 and 3 connected to each other and the connector 1 so as to cover a part or a part that is fixed by providing a latching part of a part of the part. Various forms are possible, such as those fixed to
Next, the connection maintaining means 4 will be described in detail with an example.

  For example, as shown in FIGS. 2 and 3, the connection maintaining means 4 is provided with a flange 6 at an intermediate portion of the joint ferrule 5 where the outer joint surfaces 5a of the joint ferrule 5 on both sides by the connector 1 can be in close contact with each other. A cylindrical clamp portion 12 is provided at an intermediate portion between the clamp connection terminals 2 and 3 so as to be reciprocally close to the outer periphery of the connector 1 in which the joining ferrule 5 is inserted.

  Furthermore, a spring mounting space 25 is formed between the outer peripheral surface of the tubular connecting portion 7 and the inner peripheral surface of the clamp portion 12, and a spring stopper 13 is provided on the rear inner surface of the clamp portion 12, A pressing spring 14 is mounted between the spring stopper 13 in the spring mounting space 9 and the rear surface of the flange 6.

The clamp portions 12 of the clamp connection terminals 2 and 3 are each provided with a latching groove 4c formed with a hooking portion 4b by a notch from the front end side, and the latching groove 4c is formed on the outer periphery near both ends of the connector 1. Protruding projection 4a is provided.
Then, as shown in FIG. 1B, when the projection 4a enters the hooking portion 4b, the connector 5 is pressed while the front ends 5a of the joining ferrule 5 are pressed by the urging force of the pressing spring 14. 1 and the joint ferrule 5 can be maintained.

As shown in FIG. 4, the clamp part 12 is formed by cutting out from the end face of the clamp part 12, so that the latching groove 4c is partially weakened. For this reason, as shown in FIG.
The hooking groove 4c is cut from the end face of the clamp portion 12 in parallel with the center line direction of the joining ferrule 5 and the core ferrule 10 and proceeds in the circumferential direction, and is bent in the end face direction of the clamp portion 12 to form the hook. The portion 4b is formed. As shown in FIG. 1, when two equal distances are provided in the diameter direction of the end surface of the clamp portion 12, the clamp connection terminals 2, 3 and the connector 1 can be stably connected. .
At that time, when the hooking grooves 4c are formed in the clamp portions 12 on both sides by bending in the reverse rotation direction as shown in FIG. 1 can be easily attached to the protrusion 4a.

Further, a flange-like stopper 17 is provided on the outer periphery of the optical cable guide tube 18 so as to press the rear end portion of the clamp portion 12 from the rear side.
Since the flange-shaped stopper 17 functions to hold the clamp part so as not to come out rearward, it can be separated from the joint ferrule 5 with the optical cable guide tube 18 and the clamp part 12 attached.
For this reason, when connecting each optical fiber F to the core ferrule 10 and the joining ferrule 5, by separating the optical cable guide tube 18 and the clamp part 12 from the core ferrule 10 and the joining ferrule 5, the core ferrule 10 and It becomes easy to attach each optical fiber F to the joining ferrule 5.

Further, as shown in FIG. 1 (a), a split cylindrical shape having a C-shaped cross section that can be fitted to the outer peripheral surface of the connector 1, and the clamp portions 12 of the clamp connection terminals 2 and 3 at the time of connection, It is possible to provide an attaching / detaching stopper 26 having elasticity that is substantially the same width as between the twelve tips.
The attachment / detachment stopper 26 opens the slit in the connector 1 between the clamp portions 12 and 12 after fixing the clamp connection terminals 2 and 3 and the connector 1 by connecting the optical fibers F. Install it so that it covers.
In a state where the protrusion 4a of the connector 1 is hooked on the hook portion 4b of the clamp portion 12, it is impossible to narrow the space between the clamp portions 12 and 12 with respect to the connector 1. The interposition groove 4c cannot be returned.
Therefore, it is possible to prevent the clamp connection terminals 2 and 3 from being disconnected from the connector 1.

  INDUSTRIAL APPLICABILITY The present invention is used for an optical cable connector that can connect ends of a plurality of optical fibers in an optical cable.

DESCRIPTION OF SYMBOLS 1 Connector 2 Clamp connection terminal 3 Clamp connection terminal 4 Connection maintenance means 4b Hook part 4c Hatch groove 4a Projection 5 Joining ferrule 5a Outer joining surface of joining ferrule 5b Inside joining surface of joining ferrule 6 Flange 7 Tubular connection part 8 Optical fiber Insertion hole 9 In-cylinder space 10 Core ferrule 10a Joint surface of core ferrule 11 Optical fiber insertion hole 12 Clamping part 13 Spring stop part 14 Pressing spring 15 Connecting part 16 Female screw 17 Flange-shaped stopper 18 Optical cable guide pipe 19 Groove reinforcement cover 20 Convex ridge 21 Concave groove 22 Convex ridge 23 Concave groove 24 Optical cable insertion hole 25 Spring mounting space 26 Detachable stopper 27 Transparent gel material F Optical fiber K Optical cable

Claims (5)

A pair of clamp connection terminals having a cylindrical joint ferrule into which a rod-shaped core ferrule is detachably inserted, and a cylindrical connector for connecting the both joint ferrules inside; For double wires comprising a connection maintaining means for connecting the tip of the joint ferrule to fix the clamp connection terminal and the connector, and a transparent gel material filled between the tips of both joint ferrules in the connector An optical cable connector,
The joining ferrule is formed with a planar outer joining surface and an inner joining surface on the outer and inner tip sides of the cylindrical tube, respectively, and the planar joining surface on the tip side of the core ferrule, Being in close contact with the inner joint surface of the joint ferrule,
On the opposing peripheral surfaces of the joining ferrule and the core ferrule, a concave groove and a convex ridge that fits into the concave groove are provided in parallel to the center line direction of the joint ferrule and the core ferrule, On the opposing peripheral surfaces of the connector and the joint ferrule, a concave groove and a convex ridge that fits into the concave groove are provided in parallel with the center line direction of the joint ferrule and the core ferrule,
Between the outer joint surface and the inner joint surface of the joint ferrule and for the core ferrule, the joint ferrule on both sides of the connector and the concave groove and convex ridge of the core ferrule are determined respectively. in a fixed position between both being, multi-line optical cable, characterized in that continuously the linear optical fiber an optical fiber insertion hole for inserted through, and in parallel plural through-formed and the center line direction of the joint ferrule and core ferrule connector. The connection maintaining means is provided with a flange at an intermediate portion of the joint ferrule, a tubular connection portion is integrally formed at the rear portion of the flange, and is closely attached to the outer periphery of the connector in which the joint ferrule is inserted in the intermediate portion of the clamp connection terminal. Provide a cylindrical clamp that can reciprocate in the state,
A spring stopper is provided on the rear inner surface of the clamp portion, and the spring stopper and flange in a spring mounting space formed between the outer peripheral surface of the tubular connecting portion and the inner peripheral surface of the clamp portion. Install a pressure spring between the rear surface,
The clamp portions of the clamp connection terminals are provided with latching grooves that are notched from the tip side to form a hook portion, and the outer periphery of the connector close to both ends is inserted into the hook portion. The optical cable connector for double wires according to claim 1, further comprising a protrusion that presses the front end portions of the joining ferrule by urging.   3. The double-wire device according to claim 2, wherein an optical cable guide tube is connected to the tubular connection portion, and a flange-like stopper is provided on the outer periphery of the optical cable guide tube to press the rear end portion of the clamp portion from the rear side. Optical cable connector.   The male screw is formed on the outer peripheral surface of the tubular connecting portion, and the female screw that can be screwed to the male screw is formed on the inner peripheral surface of the distal end portion of the optical cable guide tube. Optical cable connector for double wires.   It has a C-shaped split cylinder shape that allows the inner peripheral surface to be closely fitted to the outer peripheral surface of the connector, and has an elasticity that is approximately the same width as the tip of the clamp portion of the clamp connection terminal at the time of connection. The double-sided optical cable connector according to any one of claims 2 to 4, wherein the attaching / detaching stopper is attached to the connector.

Images