JP6827005B2 - Optical cable splitting tool and optical cable splitting method - Google Patents

Description

The present invention relates to an optical cable splitting tool or the like capable of splitting an optical cable and taking out an internal optical fiber.

Conventionally, when laying an optical fiber in a user's house or the like, the outer cover of the optical cable containing the optical fiber is partially cut to divide the optical cable, and the internal optical fiber is taken out. At this time, an optical cable splitting tool for splitting the optical cable is used.

As such an optical cable splitting tool, for example, a tool having a pair of levers that can be opened and closed up and down via a hinge and a cutting blade fixed at a corresponding position of each lever has been proposed (Patent Document 1). 2, 2).

Japanese Unexamined Patent Publication No. 2008-07060 Japanese Patent No. 6130936

As a method of dividing an optical cable using a conventional optical cable dividing tool, first, the optical cable is sandwiched between the upper and lower levers, and a cutting blade is applied to a notch formed in the outer cover of the optical cable. In this state, by relatively moving the optical cable dividing tool along the optical cable, the notch portion can be cut to a predetermined length by the cutting blade. Therefore, the optical cable can be divided and the internal optical fiber can be taken out.

On the other hand, since the conventional optical cable splitting tool opens and closes by the hinge portion, it is difficult to sandwich the optical cable with the upper and lower levers parallel to each other. Therefore, the optical cable is easily pinched diagonally. When the optical cable is sandwiched diagonally, the optical cable is strongly sandwiched at the narrowest position, and a large local force is applied to the optical cable. Therefore, the resistance when the optical cable dividing tool is moved with respect to the optical cable to divide the optical cable may increase.

Further, the conventional optical cable splitting tool is provided with a guide protrusion for positioning the optical cable. When closing the optical cable dividing tool, the optical cable can be positioned by inserting the guide protrusion into the notch portion before the cutting blade. Here, in order to reduce the force for sandwiching the optical cable, a cutting blade is provided near the end on the opposite side of the hinge portion, so that the guide protrusion is usually arranged on the hinge side with respect to the cutting blade. ..

However, when the cutting blade is inserted into the notch, the guide protrusion arranged on the hinge portion side is strongly pressed against the notch. Therefore, the resistance when the optical cable dividing tool is moved with respect to the optical cable to divide the optical cable increases.

Further, if the optical cable is sandwiched diagonally, the optical cable cannot be sufficiently sandwiched at the position where the distance is widest. For example, if the cutting blade is located far from the hinge, the force required to insert the cutting blade is reduced, but if the optical cable is pinched diagonally, the cutting blade is not fully inserted into the optical cable and is completely inserted. It may not be possible to split the optical cable.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an optical cable dividing tool capable of easily dividing an optical cable.

In order to achieve the above-mentioned object, the first invention is an optical cable dividing tool, wherein the first unit and the second unit are arranged so as to face each other, and at least one of the first unit and the second unit. A groove formed in the groove, a split blade arranged in each of the first unit and the second unit at a position corresponding to the groove, and the first unit and the second unit in the groove. An opening / closing mechanism capable of moving substantially linearly in a substantially vertical direction is provided, and a pair of guide mechanisms are formed in the first unit and the second unit along the formation direction of the groove. the guide mechanism, which is the first unit and the second unit, the optical cable divided tool movement in the direction other than a direction substantially perpendicular to the groove, characterized in Rukoto is restricted.
The lock mechanism that holds the first unit and the second unit in a closed state and the split blade may be arranged between the pair of guide mechanisms in the direction of forming the groove.

A spring member may be arranged between the first unit and the second unit, and the spring member may act in a direction in which the first unit and the second unit open.

With the first unit and the second unit open, a stopper structure may be provided to regulate the separation distance between the first unit and the second unit.

The first unit and the second unit may be formed of a self-lubricating resin.

The split blade is arranged on the split blade fixing member, and the first unit and the second unit have an accommodating portion capable of accommodating the split blade fixing member, and the split blade fixing member is the accommodating portion. It may be removable.

A positioning mechanism for positioning the split blade fixing member in the direction perpendicular to the groove may be formed in the accommodating portion.

When closing the first unit and the second unit, a closed state position guide for positioning both may be provided.

A locking mechanism for holding the first unit and the second unit in a closed state may be provided.

Further, another groove is formed in at least one of the first unit and the second unit so as to face the first unit and the second unit at a position corresponding to the other groove. Another dividing blade arranged in the above is arranged, an optical cable in which a support wire portion and an element are connected is arranged in the other groove, the optical cable is sandwiched between the first unit and the second unit, and the other division is performed. It may be possible to cut and divide between the element and the support wire portion with a blade.

According to the first invention, the first unit and the second unit do not have a hinge portion and move substantially linearly in a direction substantially perpendicular to the groove. Therefore, the optical cable can be sandwiched straight from above and below between the first unit and the second unit, and a part of the optical cable is not strongly sandwiched locally. Therefore, it is possible to suppress an increase in resistance when the optical cable dividing tool is moved with respect to the optical cable to divide the optical cable.

Further, by arranging a spring member between the first unit and the second unit and allowing the first unit and the second unit to act in the opening direction, the first unit and the second unit are kept in an open state. The optical cable can be easily placed in the optical cable splitting tool.

Further, by providing a stopper structure that regulates the separation distance between the first unit and the second unit in the open state, it is possible to regulate that the first unit and the second unit are excessively wide open. .. Therefore, it is possible to prevent the operator from accidentally touching the split blade.

For example, in a conventional optical cable splitting tool, a split blade is arranged near the tip where the levers spread most widely in order to reduce the force for sandwiching the optical cable. Therefore, there is a risk that the operator accidentally touches the split blade. On the other hand, if the opening between the levers is small, it becomes difficult to arrange the optical cable in the optical cable dividing tool. On the other hand, by providing the stopper structure, even if a sufficient distance between the first unit and the second unit is secured, it is possible to prevent the vicinity of the split blade from opening excessively.

Further, by providing a guide mechanism for restricting the movement of the first unit and the second unit in a direction other than the direction substantially perpendicular to the groove, it is possible to accurately position the split blade with respect to the optical cable. it can.

Further, by forming the first unit and the second unit with a self-lubricating resin, the sliding with the optical cable is good, and the resistance when the optical cable dividing tool is moved with respect to the optical cable to divide the optical cable can be reduced. it can.

Further, by making the split blade fixing member to which the split blade is fixed detachable from the accommodating portions of the first unit and the second unit, the split blade can be easily replaced and maintained.

At this time, by forming a positioning mechanism in the accommodating portion for positioning the split blade fixing member in the direction perpendicular to the groove, the split blade can be easily positioned at the time of attachment / detachment.

Further, by providing a guide for positioning both of the first unit and the second unit when the first unit and the second unit are closed, it is possible to accurately position the split blade with respect to the optical cable.

Further, by providing a lock mechanism for holding the first unit and the second unit in a closed state, the cutting work is easy.

Further, by further providing another dividing blade and another groove, the support wire portion can be easily divided from the element with respect to the self-supporting optical cable in which the support wire portion and the element are connected.

In the second invention, the optical cable dividing tool according to the first invention is used, an optical cable is arranged in the groove, the optical cable is sandwiched between the first unit and the second unit, and the optical cable is inserted along the groove. The optical cable dividing method is characterized in that a predetermined position of the optical cable is cut by the dividing blade by moving the optical cable relative to the optical cable dividing tool, and the optical cable is divided into a plurality of parts.

According to the second invention, the optical cable can be easily divided and the optical fiber can be taken out from the optical cable.

According to the present invention, it is possible to provide an optical cable dividing tool capable of easily dividing an optical cable.

An exploded perspective view showing the split tool 1. The perspective view which shows the split tool 1 in the open state. The perspective view which shows the split tool 1 in the closed state. It is a cross-sectional view of the split tool 1, (a) is a cross-sectional view taken along the line AA of FIG. 2, and (b) is a cross-sectional view taken along the line CC of FIG. It is a cross-sectional view of the split tool 1, (a) is a sectional view taken along line BB of FIG. 2, and (b) is a sectional view taken along line DD of FIG. Sectional drawing of optical cable 40. The figure which shows the method of dividing the support wire part 43 of an optical cable 40. The figure which shows the method of dividing the element 41 of an optical cable 40. The figure which shows the divided element 41. (A) is a perspective view showing the split tool 1a in the open state, and (b) is a perspective view showing the split tool 1a in the closed state. (A) is a front view showing the split tool 1a in the open state, and (b) is a front view showing the split tool 1a in the closed state. (A) is a side view showing the split tool 1a in the open state, and (b) is a side view showing the split tool 1a in the closed state. (A) is a cross-sectional view showing a split tool 1a in an open state, and (b) is a cross-sectional view showing a split tool 1a in a closed state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing the split tool 1, and FIG. 2 is an assembled perspective view of the split tool 1. 4 (a) is a sectional view taken along line AA of FIG. 2, and FIG. 5 (a) is a sectional view taken along line BB of FIG. The split tool 1 mainly includes a first unit 3a, a second unit 3b, a split blade fixing member 9a, 9b, 11, a guide 21, a spring member 19, a pin 35, a spring 33, and the like. The split tool 1 is a tool for splitting an optical cable at a predetermined position.

The first unit 3a and the second unit 3b are arranged so as to face each other. It is desirable that the first unit 3a and the second unit 3b are formed of a self-lubricating resin. For example, polyacetal (POM), polyamide (PA), polytetrafluoroethylene (PTFE), polyphenylene sulfide (PPS), etc., in which the resin itself has self-lubricating properties, can be applied. In addition, a base resin mixed with a lubricant can also be applied.

Grooves 5a and 5b are formed on one side of the split tool 1 in the width direction (W direction of FIG. 2 and the like) at positions facing each other of the first unit 3a and the second unit 3b, respectively. The grooves 5a and 5b are formed linearly over the total length of each of the first unit 3a and the second unit 3b (the total length in the direction orthogonal to the width direction (L direction in FIG. 2 and the like)).

Accommodating portions 15a and 15b are formed at substantially central positions in the longitudinal direction of the grooves 5a and 5b of the first unit 3a and the second unit 3b, respectively. That is, a part of the grooves 5a and 5b is cut out by the accommodating portions 15a and 15b. The split blade fixing member 9a is accommodated and fixed in the accommodating portion 15a of the first unit 3a. Similarly, the split blade fixing member 9b is accommodated and fixed in the accommodating portion 15b of the second unit 3b. The split blade fixing members 9a and 9b can be attached to and detached from the accommodating portions 15a and 15b with, for example, bolts.

The split blade fixing members 9a and 9b are each provided with a split blade 13. The split blade 13 is arranged so that the cutting edge faces the longitudinal direction of the grooves 5a and 5b. That is, the respective dividing blades 13 arranged in the first unit 3a and the second unit 3b are arranged so as to face each other at positions corresponding to the grooves 5a and 5b.

The split blades 13 are arranged in pairs on the split blade fixing members 9a and 9b at predetermined intervals with respect to the width direction of the split tool 1a (W direction in the drawing). Further, in a state where the split blade fixing members 9a and 9b are fixed to the accommodating portions 15a and 15b, the split blades 13 of the split blade fixing members 9a and 9b have their cutting edges in the same direction at positions facing each other. It is placed facing.

Side walls 17 (see FIG. 4A) are provided on the inner sides of the accommodating portions 15a and 15b, respectively. The split blade fixing members 9a and 9b are fixed to the first unit 3a and the second unit 3b, respectively, in a state where the side surfaces of the split blade fixing members 9a and 9b are in contact with the side wall 17, and are positioned. That is, the side wall 17 functions as a positioning mechanism for the split blade fixing members 9a and 9b in the accommodating portions 15a and 15b in the direction perpendicular to the grooves 5a and 5b. The shapes of the grooves 5a and 5b and the arrangement of the dividing blades 13 with respect to the grooves 5a and 5b will be described later.

A groove 7 is formed in the second unit 3b on the side opposite to the grooves 5a and 5b with respect to the width direction (W direction in FIG. 2 and the like) of the dividing tool 1. The groove 7 is formed linearly over the entire length of the second unit 3b (the total length in the direction orthogonal to the width direction (L direction in FIG. 2 and the like)) substantially parallel to the grooves 5a and 5b.

As shown in FIG. 4, in the portion of the first unit 3a facing the groove 7, the accommodating portion 39 is formed at a position substantially central in the longitudinal direction of the groove 7. The split blade fixing member 11 is accommodated and fixed in the accommodating portion 39. The split blade fixing member 11 can be attached to and detached from the accommodating portion 39 with, for example, bolts.

The split blade fixing member 11 is provided with a split blade 37. That is, the split blade 37 is arranged so as to face the first unit 3a. The split blade 37 is arranged in one place with the cutting edge facing the longitudinal direction of the groove 7. The cutting edge of the split blade 37 and the split blade 13 are directed in the same direction. Further, the split blade fixing member 11 is also fixed to the first unit 3a in a state where the side surface of the split blade fixing member 11 is in contact with the side wall on the back side of the accommodating portion 39, similarly to the split blade fixing members 9a and 9b. And positioning is done.

In the split blade fixing members 9a, 9b, and 11, it is desirable that the split blades 13 and 37 can be replaced (removed) with bolts or the like (not shown). By doing so, when the split blades 13 and 37 are worn or height-shifted, the split blade fixing members 9a, 9b, 11 can be easily removed from the first unit 3a and the second unit 3b. The split blades 13 and 37 can be replaced or the height can be adjusted and re-fixed.

Further, it is desirable that the split blade fixing members 9a, 9b, 11 are made of a metal such as an aluminum alloy or stainless steel. Further, as the material of the dividing blades 13 and 37, for example, tool steel is suitable.

Next, the opening / closing mechanism of the split tool 1 will be described. The split tool 1 has an opening / closing mechanism capable of moving the first unit 3a and the second unit 3b substantially linearly in a direction substantially perpendicular to the grooves 5a, 5b and the like. The opening / closing mechanism is mainly composed of a guide 21, a spring member 19, and the like.

As shown in FIG. 4A, a guide 21 is provided on the lower surface at the substantially center of the first unit 3a. The guide 21 is a rod-shaped portion and is arranged so as to face the second unit 3b. A spring member (coil spring) 19 is provided between the first unit 3a and the second unit 3b, and the guide 21 is inserted through the spring member 19. Further, the guide 21 penetrates the hole 23 of the facing second unit 3b, and the nut 27 is fixed to the male screw formed at the tip of the guide 21 below the second unit 3b.

The spring member 19 and the nut 27 have a larger outer diameter than the hole 23. Therefore, the spring member 19 arranged between the first unit 3a and the second unit 3b acts in the direction in which the first unit 3a and the second unit 3b are separated from each other, and the first unit 3a and the second unit 3b The positions where the grooves 5a and 5b are formed are held in a separated state. (Hereinafter, this state is referred to as a state in which the split tool 1 is open).

Further, the nut 27 regulates the distance between the first unit 3a and the second unit 3b. That is, the nut 27 functions as a stopper structure that regulates the separation distance between the first unit 3a and the second unit 3b when they are open. For example, the stopper structure limits the opening amount so that the distance between the first unit 3a and the second unit 3b is 10 mm or less.

FIG. 3 is an assembly perspective view in a state where the first unit 3a and the second unit 3b are close to each other (hereinafter, referred to as a state in which the dividing tool 1 is closed), and FIG. 4B is a perspective view of FIG. A sectional view taken along line CC, FIG. 5 (b) is a sectional view taken along line DD of FIG. As described above, when the first unit 3a is pressed against the second unit 3b against the spring member 19 (in the direction of arrow E in FIGS. 4B and 5B), the first unit 3a becomes The second unit moves in the 3b direction, and a part of the surfaces facing each other come into contact with each other.

When the first unit 3a and the second unit 3b move in a direction close to each other, the guide 21 moves along the hole 23, so that the first unit 3a and the second unit 3b are substantially linear with each other. Move to. That is, the guide 21 functions as a guide mechanism that regulates the movement of the first unit 3a and the second unit in a direction other than the direction substantially perpendicular to the grooves 5a, 5b, and the like.

Further, the first unit 3a is provided with a plurality of guide pins 29 protruding substantially in parallel with the guide 21. Further, a pin hole (not shown) is formed in a portion of the second unit 3b facing the guide pin 29. When closing the first unit 3a and the second unit 3b, the guide pin 29 is inserted into the pin hole. That is, when the first unit 3a and the second unit 3b are closed, the guide pin 29 functions as a closed position guide for positioning both in the horizontal direction (position in the LW plane).

Further, holes 31 are formed in the front surface of the first unit 3a in the same direction as the longitudinal direction of the grooves 5a, 5b and the like. As shown in FIG. 5A, the hole 31 accommodates the pin 35 and the spring 33. The tip of the pin 35 has a reduced diameter, and an enlarged diameter portion is formed at a predetermined position from the tip of the pin 35. The pin 35 is pushed into the hole 31 against the spring 33. That is, the tip of the pin 35 is pressed by the spring 33 in the direction of protruding from the hole 31.

As shown in FIG. 5A, when the dividing tool 1 is open, the wall portion 24 of the first unit 3a is located in front of the pin 35. That is, the wall portion 24 of the first unit 3a closes the hole 31 of the second unit 3b. Therefore, the tip of the pin 35 is pushed into the hole 31 in a state of being pressed against the inner surface of the wall portion 24.

A hole 25 is formed at a predetermined position on the wall portion 24 of the first unit 3a. The hole 25 is slightly larger than the diameter of the tip of the pin 35. As shown in FIG. 5B, when the dividing tool 1 is completely closed, the positions of the holes 25 and the holes 31 (pins 35) coincide with each other. Therefore, the pin 35 protrudes from the hole 31, and the tip of the pin 35 is pushed into the hole 25 by the spring 33 (arrow F in the figure). Since the enlarged diameter portion of the pin 35 is larger than the hole 25, the pin 35 projects until the enlarged diameter portion comes into contact with the wall portion 24. When the pin 35 fits into the hole 25, the first unit 3a and the second unit 3b are locked in a closed state.

Further, from this state, the tip of the pin 35 protruding from the front surface of the wall portion 24 is pushed into the hole 25 (hole 31), and when the tip of the pin 35 comes out of the hole 25, the lock is released. When the lock is released, the split tool 1 is opened by the spring member 19. As described above, the pin 35 and the like function as a locking mechanism for holding the first unit 3a and the second unit 3b in a closed state.

Next, a method of dividing the optical cable using the dividing tool 1 will be described. FIG. 6 is a cross-sectional view showing the optical cable 40. The optical cable 40 mainly includes a support wire portion 43 and an element 41. The element 41 is mainly composed of an optical fiber core wire 49, a protective wall 51, an interposition 53, a tension member 54, and the like.

A plurality of optical fiber core wires 49 are assembled on the element 41, and two tape-shaped protective walls 51 are arranged vertically in parallel along the optical fiber core wires 49. Interpositions 53 are arranged on both sides of the plurality of optical fiber core wires 49 between the upper and lower protective walls 51. Further, two tension members 54 are arranged on both sides of the interposition 53. The element 41 has a structure in which these are collectively covered with an outer cover 55 such as polyethylene.

Further, a support wire 45 is arranged on the support wire portion 43 and is covered with an outer cover 55. The support wire portion 43 and the element 41 are connected by a neck portion 47. That is, in the optical cable 40, the element 41 and the support wire portion 43 are connected by the neck portion 47 by the outer cover 55.

Notches 57 are provided at two locations on the upper and lower surfaces of the element 41. The width of the protective wall 51 is wider than the space between the notches 57 on each surface, and as will be described later, when the notch 57 is cut by the split blade, the split blade hits the protective wall 51 and the optical fiber core wire 49 is damaged. Prevent sticking. The number of optical fiber core wires 49 is not particularly limited, but for example, 24 or 40 are typical.

The present invention can also be applied to an optical cable composed of only the element 41. That is, in the present invention, even if the configuration is only the element 41 having no support wire portion 43, it may be referred to as an optical cable. In the following description, the optical cable 40 having the support wire portion 43 will be described.

First, as shown in FIG. 7A, the split tool 1 is opened and the optical cable 40 is arranged in the groove 7. The groove 7 has a shape corresponding to the optical cable 40, and can roughly position the optical cable 40 in the width direction (W in the drawing) with respect to the width direction of the dividing tool 1. At this time, the split blade 37 is arranged at a position corresponding to the neck portion 47 of the optical cable 40.

From this state, as shown in FIG. 7B, when the first unit 3a is pushed down (arrow E in the figure), the split blade 37 penetrates the neck portion 47. Further, as described above, since the pin 35 fits into the hole 25 (see FIG. 5B), the split tool 1 is held in the closed state.

In this state, the optical cable 40 is grasped by hand and the dividing tool 1 is moved relative to the axial direction of the optical cable 40, so that the split blade 37 cuts and divides the neck portion 47 over a predetermined length. be able to. At this time, by providing a mark (arrow) indicating the moving direction of the dividing tool 1 on the upper surface of the first unit 3a, the operator does not mistake the cutting edge direction of the dividing blade 37.

In this way, the optical cable 40 is arranged in the groove 7, and the optical cable 40 is sandwiched between the first unit 3a and the second unit 3b, and the split blade 37 cuts between the element 41 and the support wire portion 43. Then, the element 41 and the support line portion 43 are divided. Further, after the division of the neck portion 47 having a predetermined length is completed, the pin 35 is pushed into the hole 25 (see FIG. 5A), the lock is released, and the division tool 1 is opened to open the optical cable from the groove 7. 40 can be taken out.

Next, as shown in FIG. 8A, the element 41 of the optical cable 40 having the neck portion 47 divided is arranged in the groove 5b of the second unit 3b. At this time, the groove 5b is formed to have a width corresponding to the width of the element 41, and the dividing blade 13 is arranged at a portion corresponding to the notch 57. Therefore, the element 41 is positioned with respect to the groove 5b.

From this state, as shown in FIG. 8B, when the first unit 3a is pushed down (arrow E in the figure), the split blade 13 is inserted into the notch 57. At this time, the tip of each dividing blade 13 reaches the protective wall 51. That is, the split blade 13 penetrates the outer cover 55. As described above, when the split tool 1 is completely closed, the pin 35 fits into the hole 25 (see FIG. 5B), so that the split tool 1 is held in the closed state.

Here, as described above, the width of the space (W in the figure) formed by abutting the grooves 5a and 5b substantially corresponds to the width of the element 41. Therefore, the element 41 can be positioned in the width direction (parallel direction of the dividing blade 13). On the other hand, a part of the neck portion 47 may remain on one side of the element 41 in the width direction. Therefore, a convex portion formed by a part of the neck portion 47 may be formed on the lateral side of the element 41 in the width direction. On the other hand, notches 6 are formed on both sides of the space formed by abutting the grooves 5a and 5b. The notch 6 is a portion that is wider than the grooves 5a and 5b at a height corresponding to the neck portion 47. By doing so, even if a part of the neck portion 47 remains on the side surface of the element 41, interference between the neck portion 47 and the split tool 1 can be avoided.

In this state, the element 41 is grasped by hand and the dividing tool 1 is moved relative to the axial direction of the element 41, so that the dividing blade 13 causes the outer cover 55 at the portion of the notch 57 to have a predetermined length. The element 41 can be divided by cutting over. At this time, by providing a mark (arrow) indicating the moving direction of the dividing tool 1 on the upper surface of the first unit 3a, the operator does not mistake the cutting edge direction of the dividing blade 13.

After the division of the element 41 having a predetermined length is completed, the pin 35 is pushed into the hole 25 (see FIG. 5A), the lock is released, the division tool 1 is opened, and the element 41 is taken out from the groove 7. FIG. 9 is a conceptual diagram showing the divided elements 41. The optical fiber core wire 49 can be taken out from the inside of the outer cover 55 by cutting the outer cover 55 at the portion of the notch 57 through the protective wall 51 by the dividing blade 13. At this time, the optical fiber core wire 49 can be easily taken out without locally bending the element 41.

In the case of an optical cable composed of only the element 41 without the support wire portion 43, the division work of the neck portion 47 is unnecessary. That is, the optical cable can be directly arranged in the grooves 5a and 5b and divided by the above-mentioned work. In this way, the element 41 or an optical cable (hereinafter referred to as an optical cable or the like) is arranged in the grooves 5a and 5b, the optical cable and the like are sandwiched between the first unit 3a and the second unit 3b, and the optical cable and the like are placed along the grooves 5a and 5b. By moving the optical cable relative to the dividing tool 1, the dividing blade 13 can cut the outer cover 55 at a predetermined position of the optical cable or the like, and the optical cable or the like can be divided into a plurality of parts.

As described above, according to the present embodiment, since the opening / closing mechanism capable of linearly moving the first unit 3a and the second unit 3b is provided without providing the hinge mechanism, when the optical cable or the like is sandwiched. , It is possible to prevent the first unit 3a and the second unit 3b from becoming slanted. Therefore, the whole can be sandwiched substantially uniformly with respect to the longitudinal direction of the optical cable or the like.

Further, the guide 21 can restrict the movement of the first unit 3a and the second unit 3b in a direction other than the direction substantially perpendicular to the grooves 5a, 5b and the like. Therefore, the first unit 3a can be pushed into the second unit 3b substantially straight without tilting. Therefore, a part of the dividing tool 1 is not strongly pressed against the optical cable or the like, and when the dividing tool 1 is moved relative to the optical cable or the like, the optical cable or the like can be easily divided with a small force. Further, since the split blade 13 can be reliably inserted to a predetermined depth of the outer cover 55, the uncut residue of the outer cover is unlikely to occur.

In particular, since the first unit 3a and the second unit 3b are formed of a self-lubricating resin, the optical cable or the like slides well between the splitting tool 1 and the optical cable or the like can be easily split with a smaller force.

Further, since the split tool 1 is opened by the spring member 19, it is easy to arrange and take out the optical cable or the like in the grooves 5a, 5b and the like. At this time, since the stopper structure has a stopper structure in which the gap between the first unit 3a and the second unit 3b is equal to or less than a predetermined value, it is possible to prevent the operator from accidentally inserting a finger and contacting the split blades 13 and 37. ..

Further, the split blades 13 and 37 are provided on the split blade fixing members 9a, 9b and 11, and the split blade fixing members 9a, 9b and 11 can be easily attached to the first unit 3a and the second unit 3b with bolts or the like. Detachable. Therefore, the split blades 13 and 37 can be easily maintained or replaced against wear and height deviation of the split blades 13 and 37. At this time, the split blade fixing members 9a, 9b, 11 can be positioned with respect to the first unit 3a and the second unit 3b by contacting a part of the accommodating portions 15a, 15b, 39. If positioning is possible, a positioning guide, a key, or the like may be further provided at the contact portion between the split blade fixing members 9a, 9b, 11 and the accommodating portions 15a, 15b, 39.

Further, by positioning both the first unit 3a and the second unit 3b when they are closed by the guide pin 29, the split blades 13 and 37 can be accurately arranged with respect to the optical cable or the like.

Further, since the split tool 1 has a lock mechanism for holding the split tool 1 in the closed state, the operator needs to keep pressing the first unit 3a and the second unit 3b in order to keep the split tool 1 in the closed state. There is no, and the division work is easy.

Next, the second embodiment will be described. FIG. 10A is a perspective view of the split tool 1a in an open state, and FIG. 10B is a perspective view of the split tool 1a in a closed state. 11 (a) is a front view of the split tool 1a in an open state, FIG. 11 (b) is a front view of the split tool 1a in a closed state, and FIG. 12 (a) is an open view of the split tool 1a. FIG. 12 (b) is a side view of the split tool 1a in a closed state. 13 (a) is a sectional view taken along line GG of FIG. 11 (a), and FIG. 13 (b) is a sectional view taken along line HG of FIG. 11 (b).

In the following description, the same reference numerals as those in FIGS. 1 to 9 will be given to the configurations that perform the same functions as those in the first embodiment, and duplicate description will be omitted. The split tool 1a has almost the same configuration as the split tool 1, but has a different lock mechanism, stopper structure, and the like.

As shown in FIG. 13A, the first unit 3a and the second unit 3b are connected by a pair of guides 21 and a spring member 19. The guide 21 penetrates the hole 66 of the first unit 3a, and the lower end of the guide 21 is fixed to the second unit 3b with a screw or the like. Inside the hole 66, a step whose diameter increases upward is formed, and comes into contact with the enlarged diameter portion at the upper end of the guide 21. That is, the distance between the gap between the first unit 3a and the second unit 3b is regulated by the step between the enlarged diameter portion of the guide 21 and the hole 66. As with the dividing tool 1, the spring member 19 always receives a force in the opening direction of the dividing tool 1a.

A fixing lever 61 is arranged in the second unit 3b. The fixed lever 61 is rotatable with respect to the second unit 3b with the pin 63 as the center of rotation. A hook-shaped locking portion 62 is formed on the upper portion of the fixing lever 61. When the split tool 1a is open, the upper end of the fixing lever 61 is buried inside the first unit 3a.

Also in the split tool 1a, as shown in FIG. 13B, the split tool 1a can be closed by pushing the first unit 3a into the second unit 3b. At this time, the fixing lever 61 protrudes to the upper part of the first unit 3a and becomes operable.

A pin 65 is arranged at a predetermined position of the first unit 3a. The pin 65 is arranged substantially parallel to the pin 63. When the fixing lever 61 is rotated with the dividing tool 1a closed, the locking portion 62 and the pin 65 are fitted together. That is, the fixing lever 61 is locked to the pin 65. Therefore, the split tool 1a can be held in the closed state.

When the fixing lever 61 is rotated in the opposite direction from this state, the locking portion 62 is disengaged from the pin 65 and the lock can be released. Further, when the lock is released, the split tool 1a can be opened by the spring member 19.

According to the second embodiment, the same effect as that of the first embodiment can be obtained. As described above, the lock mechanism that holds the split tool in a closed state, the stopper structure that regulates the opening amount, and the like may have any other structure.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention does not depend on the above-described embodiments. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical ideas described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

For example, although the grooves 5a and 5b are provided in both the first unit 3a and the second unit 3b, respectively, a groove having a size capable of arranging an optical cable or the like may be provided in only one of them. That is, the groove for dividing the optical cable may be formed in at least one of the first unit 3a and the second unit 3b.

Similarly, the groove 7 may be divided into both the first unit 3a and the second unit 3b. Further, when only the optical cable having no support wire portion 43 is divided, the groove 7 and the dividing blade 37 and the like are unnecessary.

Further, when both the grooves 7 and the grooves 5a and 5b are provided, the directions of the cutting edges of the dividing blade 37 and the dividing blade 13 may be opposite to each other. For example, when the support wire portion 43 is divided by the dividing blade 37 and when the element 41 is divided by the dividing blade 13, the relative moving direction of the dividing tool may be opposite to that of the optical cable or the like. In this case, as shown in FIG. 10A, on the upper surface of the first unit 3a, arrows in opposite directions are arranged at the positions corresponding to the grooves 7 and the positions corresponding to the grooves 5a and 5b, respectively. You may. Further, the split blade 13 may be provided at a position corresponding to the notch 57 provided in the element 41 of the optical cable 40, and if two or more split blades 13 are arranged in the first unit 3a and the second unit 3b. good. Further, the split blades of the first unit 3a and the second unit 3b do not necessarily have to be arranged at positions facing each other.

1, 1a ………… Split tool 3a ………… 1st unit 3b ………… 2nd unit 5a, 5b, 7 ………… Groove 6 ………… Notch 7 ………… Holder mounting part 9a, 9b, 11 ……… Split blade fixing members 13, 37 ……… Split blades 15a, 15b, 39 ……… Accommodating part 17 ……… Side wall 19 ……… Spring member 21 ……… Guide 23 ……… Hole 24 ……… Wall 25 ………… Hole 27 ………… Nut 29 ………… Guide pin 31 ………… Hole 33 ………… Spring 35 ………… Pin 40 ………… Optical cable 41 ………… Element 43 ………… Support wire 45 ………… Support wire 47 ………… Neck 49 ………… Optical fiber core wire 51 ………… Protective wall 53 ………… Intervention 55 ………… Cover 57 ………… Notch 61 ………… Fixed lever 62 …… … Locking parts 63, 65 ……… Pin 66 ……… Hole

Claims (11)

It is an optical cable splitting tool
The first unit and the second unit arranged to face each other,
A groove formed in at least one of the first unit and the second unit,
A split blade located in each of the first unit and the second unit at a position corresponding to the groove,
An opening / closing mechanism capable of moving the first unit and the second unit substantially linearly in a direction substantially perpendicular to the groove,
Equipped with
A pair of guide mechanisms are formed in the first unit and the second unit along the formation direction of the groove, and the guide mechanism makes the first unit and the second unit substantially perpendicular to the groove. optical cable split tool movement in the direction other than the direction wherein the Rukoto is restricted. The locking mechanism for holding the first unit and the second unit in a closed state and the dividing blade are arranged between the pair of guide mechanisms in the direction of forming the groove. The optical cable splitting tool according to claim 1. Wherein between the first unit and the second unit, the spring member is disposed, said spring member, according to claim 1 or, characterized in that acting in the opening direction and the first unit and the second unit is The optical cable splitting tool according to claim 2 . Wherein in said first unit when the second unit and is open, the optical cable split tool according to any of claims 1 to 3, characterized in that it comprises a stopper structure for regulating the distance between them. The optical cable splitting tool according to any one of claims 1 to 4, wherein the first unit and the second unit are formed of a self-lubricating resin. The split blade is arranged on the split blade fixing member, and the first unit and the second unit have an accommodating portion capable of accommodating the split blade fixing member, and the split blade fixing member is the accommodating portion. The optical cable splitting tool according to any one of claims 1 to 5, wherein the optical cable splitting tool is detachable. The optical cable splitting tool according to claim 6, wherein a positioning mechanism for positioning the split blade fixing member is formed in the accommodating portion in a direction perpendicular to the groove. The optical cable dividing tool according to any one of claims 1 to 7, wherein a closed state position guide for positioning both of the first unit and the second unit is provided. The optical cable splitting tool according to any one of claims 1 to 8, further comprising a locking mechanism for holding the first unit and the second unit in a closed state. Further, another groove is formed in at least one of the first unit and the second unit so as to face the first unit and the second unit at a position corresponding to the other groove. Other split blades placed in are placed,
An optical cable in which a support wire portion and an element are connected is arranged in the other groove, the optical cable is sandwiched between the first unit and the second unit, and the other split blade is used between the element and the support wire portion. The optical cable dividing tool according to any one of claims 1 to 9, wherein the optical cable can be cut and divided. Using the optical cable splitting tool according to any one of claims 1 to 10.
By arranging the optical cable in the groove, sandwiching the optical cable between the first unit and the second unit, and moving the optical cable along the groove relative to the optical cable dividing tool, the split blade A method for dividing an optical cable, which comprises cutting a predetermined position of the optical cable and dividing the optical cable into a plurality of parts.

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