JP3438137B2 - Central seal strip loading device for multiplex cables. - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiplex cable in which three or more unit cables are bundled, such as a triplex type cable, and a central seal piece is loaded in a central space surrounded by the unit cables. For equipment.

[0002]

2. Description of the Related Art Conventionally, for example, a power cable, an optical cable, and a communication cable are made up of a multiplex cable in which three or more unit cables such as a triplex type cable are bundled, and are buried in the ground. The pipes in the ground are connected to the manhole at predetermined intervals.

Therefore, the opening end of the conduit is opened so as to face the manhole, and the cable inserted through the conduit is introduced into the manhole from the opening end.

[0004]

Generally, since the inner diameter of the conduit is formed larger than the outer diameter of the cable, the open end of the conduit facing the manhole is opened around the cable. As a result, foreign matter such as water, dust, oil, and pebbles in the manhole may easily enter the conduit through the opening, thereby damaging the cable.

Moreover, when such a foreign substance enters the conduit, the cable adheres to the conduit due to a chemical reaction between the cable coating and the inorganic compounds contained in oil and water, and the cable is replaced when the cable is replaced. It may not be possible to extract it from the Alternatively, it may be difficult to insert a new cable after pulling out the cable.

Therefore, in order to solve the above-mentioned problems, the present applicant has previously applied, as Japanese Patent Application No. 2000-254706, to cover the open end of the conduit through which the cable is inserted and to hold the cable. I have just proposed a device (a device for holding and closing a conduit for a cable).

The cable conduit closure holding device according to this prior application constitutes a tubular main body composed of circumferentially divided split bodies, and a large diameter of the split body constituting the large-diameter tubular portion of the tubular main body. It is configured to be fixed to the pipe by pressing the divided piece onto the inner peripheral surface of the pipe, and the multiplex cable is held by the small-diameter divided piece of the divided body forming the small-diameter tubular portion of the tubular main body. The opening end of the conduit is closed by the flange split piece of the split body that constitutes the flange of the tubular body. On this occasion,
In the space between the outer peripheral surface of the multiplex cable and the inner peripheral surface of the small-diameter tubular portion, that is, in the space between the adjacent peripheral surface of the unit cable and the inner peripheral surface of the small-diameter tubular portion, a peripheral seal piece is provided. Is loaded. Further, a central sealing piece is loaded in the central space of the multiplex cable surrounded by the unit cables. As a result, water, dust, and
Foreign matter such as oil and pebbles is prevented from entering the space.

By the way, the peripheral sealing piece can be easily loaded because it can be attached to the outer peripheral surface of the multiplex cable, but the central sealing piece has to be inserted in the central portion, so that it is not easy to load. Since the unit cable has flexibility, by bending the plurality of unit cables and expanding each other while expanding the central space portion,
Although it is possible to insert the central seal piece into the expanded space, since the unit cable includes a large number of thin wire cables and is covered with a thick tube, bending is not easy and the operation is difficult.

[0009]

DISCLOSURE OF THE INVENTION The present invention solves the above problems and provides an apparatus capable of easily loading a central sealing piece in the central space of a multiplex cable. As one means, in a multiplex cable in which three or more unit cables are bundled, a device for loading a central seal piece in a central space surrounded by the unit cables is used. The pair of tongues are provided between the unit cables, and the pair of tongues are relatively positioned between the abutting position where the pair of tongues are substantially overlapped with each other and the expanded position where they are separated from each other. The point is that it is provided with a drive means for driving to move back and forth.

Further, according to the second aspect of the present invention, in a multiplex cable in which three or more unit cables are bundled, a central seal piece is loaded in a central space surrounded by the unit cables. A device,
Tongue pieces that are almost overlapped with each other so as to be inserted between two adjacent unit cables are provided in the first structure body and the second structure body, and an abutting position where a pair of tongue pieces is almost overlapped,
A driving means for driving the first structure and the second structure forward and backward is provided so as to relatively move between the expanded position and the separated position, and between the two adjacent unit cables. The holding means for detachably holding each unit cable is provided on the back surface of each of the pair of inserted tongue pieces.

The driving means includes a screw rod rotatably provided in one of the components, a female screw hole provided in the other component so that the screw rod can be screwed and inserted, and an insertion end of the screw rod. And a rotation drive handle provided on the.

The holding means provided on each of the pair of tongues comprises a bracket projecting from the back surface of the tongue and a holding piece pivotally attached to the bracket so as to rotate freely. A claw piece that is bent toward the back surface of the tongue piece is provided, and a spring that biases the holding piece in a direction that brings the claw piece closer to the back surface of the tongue piece is provided.

The holding means provided on each of the pair of tongues comprises a bracket projecting from the back surface of the tongue and a holding piece rotatably attached to the bracket via a pivot. Provided at one end of the holding piece is a claw piece that faces the back surface of the tongue and holds the unit cable, and at the other end is a locked part that extends beyond the pivot axis, and the claw piece is placed on the back surface of the tongue piece. A spring is provided to urge the holding piece to rotate in the direction to bring it closer to the back of the tongue piece.When the holding piece is turned so as to move the claw piece away from the back surface of the tongue piece, The bracket is provided with locking means that locks in a detachable manner.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

(Cable Pipe Line Closure / Retaining Device) Before explaining the device for loading the central sealing piece in the multiplex cable according to the present invention, the prior application previously proposed on the basis of FIGS. 1 to 4 is described. A closure holding device for a cable conduit according to the present invention will be described.

An example in which a closure holding device is used in a known cable pipeline in which a cable 2 is inserted through a pipeline 1 buried in the ground and an open end 3 of the pipeline is exposed to a manhole 4. 3 shows. The pipeline 1 is made of a clay pipe or other pipe structure and is embedded in the soil 5, and the manhole 4 is formed of, for example, a concrete wall 6. In the illustrated example, the cable 2 shows a triplex type cable in which three unit cables 2a are bundled, but a multiplex cable in which three or more unit cables are bundled may be used.

As shown in FIG. 1, the closure holding device constitutes a tubular main body 7, and has a disk-shaped flange 8 facing the opening end 3 of the conduit and an opening from the opening of the conduit to the inside of the conduit. It is provided with a cylindrical large-diameter cylindrical portion 9 to be inserted and a cylindrical small-diameter cylindrical portion 10 surrounding the multiplex cable 2 outside the pipeline. In the case of the example, the flange 8 and the large-diameter cylindrical portion are provided. While the parts 9 are arranged substantially concentrically, the small-diameter cylindrical parts 10 are arranged eccentrically. Therefore, multiplex cable 2
You can apply the lid by holding down the movement of as much as possible.

The tubular main body 7 is composed of a divided body 11 divided in the circumferential direction. In the illustrated embodiment, it is composed of three divided bodies 11a, 11b, 11c by three divisions, but the number is not limited. In the case of the configuration of three divisions as shown in the figure, one division body 11a is formed so that the flange is substantially V-shaped. The remaining two split bodies 11b and 11c
Can be formed in an arbitrary divided form, but they may be formed symmetrically to each other. Therefore, the divided body 11 (11a, 11
b, 11c) are each a flange split piece 8a that splits the flange 8, a large-diameter split piece 9a that splits the large-diameter tubular portion 9, and a small-diameter split piece that splits the small-diameter tubular portion 10. And 10a.

Each divided body 11 (11a, 11b, 11c)
Brackets 12 adjacent to each other are provided on the small-diameter divided piece 10a so as to extend in the radial direction of the small-diameter tubular portion 10. The split body 11 is preferably made of metal, in which case each bracket 12 is fixed to the small-diameter split piece 10a and the flange split piece 8a by welding. Alternatively,
The split body 11 may be made of reinforced plastic,
In that case, the entire bracket 12, the small-diameter divided piece 10a, and the flange divided piece 8a can be integrally molded.

As shown in FIG. 2, the bracket 12 of each divided body 11 is provided with a hole for inserting a bolt. In the illustrated embodiment, the pair of split bodies 1
Brackets 12s and 12 of 1b and 11c adjacent to each other
s is provided with one hole 13s that matches each other, but in the brackets 12 and 12 that are adjacent to each other, the substantially V-shaped divided body 11a and the other two divided bodies 11b and 11c. Is provided with a pair of holes 13a and 13b that are aligned with each other at intervals in the radial direction of the flange 8. As will be described later, of the pair of holes 13a and 13b,
One hole is used for positioning, and the other hole is used as a fastening hole for expanding the large diameter cylindrical portion 9.

The division surface of each divided body 11 is divided from the side edge 8e of the flange division piece 8a to the end edge 12e of the bracket 12.
A taper surface 14 (shown as an angle θ in FIG. 4A) is formed so that the bracket 12 has a tapered wall thickness. Further, elastic rims 15 made of rubber or the like are attached to the free ends of the large-diameter divided pieces 9a forming the cylinder edge of the large-diameter cylindrical portion 9.

In order to effectively achieve the purpose of the closure holding device, a central space portion which is located at least at a portion facing the small-diameter cylindrical portion 10 and which is surrounded by three or more unit cables 2a constituting the multiplex cable 2 is formed. A center seal piece 16 is loaded in the. In the case of a triplex cable composed of three unit cables 2a as shown in the figure, the central space portion appears as a triangular shape with three sides curved in an arc shape, so that the central sealing piece 16 follows the shape. Is made of rubber and has a substantially triangular cross section,
It extends long in the axial direction. Further, a peripheral seal piece 17 is loaded in each of the space portions formed between the outer peripheral surface of the multiplex cable 2 in which the unit cables 2a are bundled and the inner peripheral surface of the small-diameter cylindrical portion 10. In the case of a triplex cable composed of three unit cables 2a as shown in the figure, three space portions formed between the peripheral surfaces of the unit cable 2a adjacent to each other and the inner peripheral surface of the small diameter cylindrical portion 10. Since each of them appears as a fan shape, the peripheral seal piece 17 is formed of rubber or the like in a fan shape in cross section so as to follow the shape.

The method and operation of using the closure holding device based on the above construction will be described. By using the loading device of the present invention as described below, the central sealing piece 16 is provided in the central space of the multiplex cable 2. After loading
With the three peripheral seal pieces 17 attached to the outer peripheral surface of the cable 2, the three divided bodies 1 from the outer peripheral side of the cable 2 are provided.
1 (11a, 11b, 11c) combined, small diameter split piece 1
0a surrounds the outer periphery of the cable 2 and inserts the large-diameter split piece 9a into the opening of the pipeline 1 so that the flange split piece 8a faces the open end 3 of the pipeline 1. At this time, as shown in FIG. 3, it is desirable that the small-diameter cylindrical portion 10 composed of the small-diameter divided pieces 10 a is arranged so as to face the bottom of the conduit 1.

In this state, since the tapered surface 14 is formed on the bracket 12 in each divided body 11 as described above, as shown in FIG. Brackets 12s, 1
The taper surfaces 14 and 14 are open as shown by an angle θ between the 2s. Although the angle θ is exaggerated in FIG. 4, it should be appreciated that the angle θ can be arbitrarily designed.

Therefore, a pair of brackets 12, 12 adjacent to each other of each divided body 11 are bolted through holes 13 to each other.
When the bracket 1 is connected and tightened by the connecting means 19 constituted by the nut 18, the angle θ becomes narrower with the side edge 8e of the flange split piece 8a as the fulcrum p.
2 and 12 are fastened to each other, whereby the small-diameter divided pieces 10a constituting the small-diameter tubular portion 10 are fastened in the diameter reducing direction to hold the multiplex cable 2. At the same time, the fulcrum p expands the large-diameter split piece 9a that constitutes the large-diameter cylindrical portion 9, and presses the elastic rim 15 against the inner peripheral surface of the conduit 1. Therefore, as shown in FIGS. 3 and 4 (B), the tubular body 7 assembled by the divided pieces 11 has the large-diameter tubular portion 9 against the pipe line 1 by the compression of the elastic rim 15 to prevent slippage. Along with this, the cable 2 is strongly fixed by the small-diameter cylindrical portion 10 outside the road. At this time, the elastic rim 1
5 is compressed as a result of being pressed against the inner surface of the pipe line 1 and extends in the circumferential direction of the large-diameter cylindrical portion 9, so that each divided body 11
Close the gap between the divided surfaces of a, 11b, and 11c,
Prevents foreign matter from entering (that is, the gap s shown in FIG.
Is sealed by the extension of the elastic rim 15).

In the case of the configuration according to the illustrated embodiment, the assembling of the divided bodies 11 (11a, 11b, 11c) and the connecting means 1
Before connecting and fastening by means of 9, the holes 13 (13
a, 13b, 13s), the bolts and nuts 18 (connecting means 1) are first inserted in the holes 13s.
9) is tightened, the divided bodies 11 are joined together while the tapered surfaces 14, 14 formed between the brackets 12s, 12s are held together.
The large-diameter divided pieces 9a and 9a of b and 11c are expanded. As a result, the other holes 13a, 1 of the divided bodies 11b, 11c are
At least the hole 13a on the outer side of 3b can be slightly moved, but since the substantially V-shaped divided body 11a is temporarily fixed by a bolt inserted in advance, a set of holes 13a is formed.
a, 13a and a pair of holes 13b, 13b are positioned coaxially with each other. Therefore, the holes 13a,
When the bolt / nut 18 (coupling means 19) is fastened at the portion 13b, the pair of split bodies 11b, 11 fastened earlier is fastened.
The substantially V-shaped divided body 11a with respect to c is the bracket 12,
Large-diameter divided piece 9a while holding 12 tapered surfaces 14, 14 together
The three divided bodies 11a, 11 as a whole.
The large-diameter divided pieces 9a of b and 11c are pressed against the inner surface of the pipe line 1 and pressure-bonded. As described above, one of the pair of holes 13a and 13b functions for positioning, and the other hole functions for expanding the large-diameter divided piece 9a by fastening.

The divided bodies 11a, 11 divided into three in this way
In the illustrated embodiment of b and 11c, the left and right divided bodies 11b and 1b are first separated from the state in which the bolts and nuts 18 are loosened through the brackets 12 and 12 adjacent to each other.
One bracket 1s of adjacent brackets 12s, 12s of 1c
Tighten the bolts and nuts 18 inserted in 3s, and then the two holes 1 in the other brackets 12, 12.
The work is facilitated by tightening the bolts and nuts 18 that are inserted through 3a and 13b.

In this state, the multiplex cable 2 is attached to the small-diameter cylindrical portion 10 facing the manhole 4.
Is sealed by the central sealing piece 16 in the space located at the center of the three or more cables 2a, and by the peripheral sealing piece 17 in the space between each cable 2a and the small-diameter cylindrical portion 10. Foreign matter does not enter the conduit 1 through the small-diameter cylindrical portion 10. Further, since the flange 8 is arranged opposite to the opening end edge 3 of the conduit 1 facing the manhole 4, foreign matter is prevented from entering the conduit 1 from the opening end. When it is necessary to seal the gap between the open end of the conduit 1 and the flange 8 or the gap between the enlarged large-diameter split pieces 9a, etc., when the split bodies 11 are assembled together, A fluid sealant such as silicone rubber may be applied to those portions.

Of course, the closure holding device is not limited to the above embodiment. For example, in the illustrated example, the divided body 11 obtained by dividing the cylindrical main body 7 into three is shown, but the number of divisions is not limited as long as it is two or more. Also, the connecting means 19
As described above, the structure in which the bracket 12 is fastened with the bolts and nuts 18 has been described, but the small diameter tubular portion 10 may be fastened with a band or the like. Further, although the tapered surface 14 in which the fulcrum p is formed on the side edge 8e of the flange division piece 8a has been described, a configuration may be adopted in which a wedge is driven. It suffices that the structure is such that the diameter of 9 can be increased. still,
The closure holding device can be widely applied to underground pipes having manholes, pipes in buildings, and other pipes through which cables can be inserted.

(Device for Loading Central Seal Piece) As described above, before the closure holding device is attached to the multiplex cable 2, the central seal piece 16 is loaded in the central space of the cable 2. The loading device according to the invention is then used.

As shown in FIG. 5, the loading device comprises a first and a second structure 21 and 22, which are generally symmetrical in shape, and each of the structures 21 and 22 has a plate-shaped tongue. Piece 2
3 are extended. First structure 21 and second structure 22
Is relatively movable between an abutting position (see FIG. 6) where the pair of tongue pieces 23, 23 are substantially overlapped with each other and an expanding position (see FIG. 7) in which they are separated from each other. A driving means 24 for mutually moving forward and backward and a guide means 25 for guiding forward and backward movement are provided. In the figure, the moving direction that separates the pair of tongue pieces 23, 23 indicated by arrow F is referred to as the "forward direction", and the moving direction that abuts the pair of tongue pieces 23, 23 indicated by arrow R is the "reverse direction". Called.

The guide means 25 comprises a guide rod 26 extending in the forward / backward movement direction as described above. One end of the guide rod 26 is fixed to the second structure 22 via a fixing means such as a set screw 27, and It is slidably inserted into the guide hole 28 of the first structure 21.

The driving means 24 comprises a screw rod 29 parallel to the guide rod 26, one end of the screw rod 29 is rotatably connected to the first component 21, and the screw rod 29 is screwed into the female screw hole 30 of the second component 22. The screw rod 29 is inserted into the screw lot 29, and the handle 31 for rotation driving is attached to the other end of the screw lot 29.
Is provided. At this time, the handle 31 is attached to the screw rod 2
It is slidably inserted in a slide hole 32 formed in the orthogonal direction 9. It should be noted that one end of the screw rod 29 is connected to the stopper pin 33 so as not to be separated from the first structure 21, and the end face of the ball 3 is formed so as to smooth the rotation.
It touches 4. Therefore, when the screw rod 29 is normally rotated by the handle 31, the pair of components 21, 22 are moved forward in the directions of the arrows F, F so as to separate from each other, and conversely, when the screw rod 29 is reversed, the pair of components 21, 22 is moved. , 22
However, as seen from the cable, arrows R, R
The guide means 25 guides the forward / backward movement.

The pair of components 21, 22 are formed such that the whole abdominal surface (abutting surface) including the tongue piece 23 is a flat surface, and holding means is provided on the back surface (the surface opposite to the abdominal surface) of the tongue piece 23. 35 are provided. The holding means 35 includes a bracket 36 protruding from the back surface of the tongue piece 23, a holding piece 37 rotatably attached to a protruding end of the bracket 36, and an engaging member provided near the base end of the bracket 36. And a stop means 38.

The holding piece 37 is pivotally attached to the protruding end of the bracket 36 via a pivot 39, and has a claw 40 bent toward the back surface of the tongue 23 at one end and extends beyond the pivot 39. The other end has a locked portion 41, and the holding piece 3
The spring 42 provided between the bracket 7 and the bracket 36 holds the holding piece 37 in a direction to bring the claw piece 40 closer to the back surface of the tongue piece 23.
Is urged to rotate. In the case of the illustrated example, the spring 42 is composed of a coiled spring externally fitted to the pivot 39. Therefore, the holding piece 37 is always urged to rotate by the spring 42 until the tip of the claw piece 40 is brought into contact with the back surface of the tongue piece 23 as shown by the solid line in FIG. And rotate it in the direction of the arrow, as shown by the chain line.
0 is separated from the back surface of the tongue piece 23.

When the holding piece 37 is rotated against the spring 42 as shown by the chain line in FIG. 5, the locked portion 41 approaches the locking means 38, so that the locking means 38 is locked at that position. It is configured to be detachably engaged with the stopper portion 41 and to be able to fix the holding piece 37 by the spring 42 so as not to return to the original position by rotation. In the case of the illustrated example, the locking means 38 is composed of a hook piece 44 pivotally attached to the bracket 36 by a pivot shaft 43. The pin 45 can be locked.

With the loading device having the above structure, the central seal piece 1 is placed in the central space of the multiplex cable 2.
6 is loaded, the tongue pieces 23, 2 together with the pair of structural bodies 21, 22 are driven by the driving means 24 as shown in FIG.
While retreating to the abutting position where 3 was almost overlapped,
As shown by the chain line in the drawing, the holding pieces 37, 37 are rotated against the spring 42, and the back surfaces of the tongue pieces 23, 23 are opened. It is inserted between the unit cables 2a, 2a. Therefore, the holding piece 3
When 7 and 37 are rotated by the biasing force of the spring 42, the unit cables 2a and 2a are
The holding pieces 37, 37 are held by the claw pieces 40, the back surface of the tongue piece 23, and the bottom surface of the bracket 36. In this state,
The locked portion 41 of the holding piece 37 is released from the locking means 38, and is held while holding the unit cable 2a.

Thereafter, as shown in FIG. 7, the driving means 24
When the tongue pieces 23 and 23 are advanced together with the pair of structural bodies 21 and 22 to the expanded position where they are separated from each other, the two unit cables 2a and 2a are spread and the pair of tongue pieces 2 are
A sufficiently large space S is formed between 3 and 23. Therefore,
The center seal piece 16 can be easily inserted between the three unit cables 2a, 2a, 2a through the space S. When the insertion of the central seal piece 16 is completed, the holding piece 37
Unlocking the locking means 38 with respect to the locked portion 41 and rotating the holding pieces 37, 37 against the spring 42 as shown by the chain line in the figure to release the unit cable 2a from the claw piece 40. Allows the tongues 23, 23 together with the entire loading device.
Can be pulled out from between the unit cables 2a, 2a. At this time, if the drive means 24 slightly moves the tongue pieces 23, 23 together with the pair of structural bodies 21, 22 in the approaching direction (retracting direction), the pulling out operation becomes easier.

As described above, the multiplex cable 2
Although the unit cable 2a constituting the unit has flexibility, it has a poor elastic restoring force because it has a structure in which a large number of thin wire cables are covered with a thick tube, and thus the unit cables 2a and 2a expanded as described above are self-contained. Do not restore. Therefore, after inserting the central seal piece 16, in order to additionally attach the peripheral seal piece 17 from the outer peripheral side and cover the divided body 11 of the closure holding device as described above, the expanded unit cable 2a, It is necessary to bundle 2a as it was originally. Therefore, the unit cables 2a and 2a are provided between the pair of tongue pieces 23 and 23 in a state in which the components 21 and 22 including the tongue pieces 23 and 23 of the detached loading device are expanded to the maximum extent by the drive means 24. Insert the drive means 2 as shown in FIG.
4, the pair of tongue pieces 23, 23 are connected to the unit cables 2a, 2
If a is sandwiched, the unit cables 2a, 2a that have been previously spread will have their bending habits corrected, and will be restored to the original bundled state.

Thereafter, the loading device is removed from the multiplex cable 2 in which the unit cables 2a, 2a, and 2a are bundled with the central seal piece 16 loaded, and the peripheral seal piece 17 is attached as described above. A closure holding device may be attached together with it.

[0041]

According to the present invention, in the multiplex cable 2 in which three or more unit cables are bundled, the central seal piece 16 is loaded in the central space surrounded by the unit cables 2a, 2a, 2a. At this time, the unit cables 2a, 2a that are difficult to bend can be easily spread, and the central seal piece 16 can be easily loaded through the widened space, and further, the unit cable 2 that has a poor elastic restoring force.
By sandwiching a and 2a from the spread state, it is possible to easily restore the original bundled state.

[Brief description of drawings]

FIG. 1 is a perspective view showing a closed state holding device for a cable conduit used with the present invention in an assembled state.

FIG. 2 is a perspective view showing the closure holding device in an exploded state.

FIG. 3 is a cross-sectional view showing a state in which the conduit is closed by the closing holding device and the cable is held.

FIG. 4 is a view showing an operation of the closing holding device in a use state, (A) is an explanatory view showing a state before fastening from a bottom surface,
(B) is an explanatory view showing a state after fastening from the bottom surface.

FIG. 5 is a front view showing an embodiment of a device for loading a center seal piece in a multiplex cable according to the present invention.

FIG. 6 is a front view showing a state in which a tongue piece of the same device is inserted between two unit cables in a partial cross section.

FIG. 7 is a front view showing, in a partial cross section, a state in which two unit cables are expanded by the same device.

FIG. 8 is a front view showing, in a partial cross section, a state in which the two unit cables have been restored to the bundled position by the same device.

[Explanation of symbols]

2 multiplex cables 2a unit cable 16 Center seal piece 21 First Composition 22 Second component 23 tongue 24 Driving means 25 Guide means 29 screw rod 30 female screw hole 31 Rotation drive handle 35 holding means 36 bracket 37 holding piece 38 Locking means 39 Axis 40 nail pieces 41 Locked part 42 spring

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 2002-7813 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 9/00 H02G 1/00

Claims (5)

(57) [Claims] 1. A multiplex cable in which three or more unit cables are bundled, which is a device for loading a central sealing piece in a central space surrounded by the unit cables, and between two adjacent unit cables. And a pair of tongues to be inserted into, and between an abutting position where the pair of tongues are substantially overlapped with each other and an expanding position where they are separated from each other,
An apparatus for loading a central seal piece in a multiplex cable, comprising a driving means for relatively moving a pair of tongue pieces forward and backward. 2. A multiplex cable in which three or more unit cables are bundled, which is a device for loading a central sealing piece in a central space surrounded by the unit cables, and between two adjacent unit cables. The tongue pieces that are almost overlapped with each other so as to be inserted into the first configuration body and the second configuration body are provided, and an abutting position where the pair of tongue pieces are substantially overlapped with each other and an expanding position where they are separated from each other. A pair of tongue pieces inserted between two adjacent unit cables, each of which is provided with driving means for driving the first and second constituent members to move back and forth relative to each other. An apparatus for loading a central sealing piece in a multiplex cable, characterized in that a holding means for detachably holding each unit cable is provided on the back surface of the. 3. The driving means includes a screw rod rotatably provided in one of the constituent members, and a female screw hole provided in the other constituent member so that the screw rod can be screwed and inserted.
The device for loading a central sealing piece in a multiplex cable according to claim 2, characterized in that the device comprises a rotary drive handle provided at the insertion end of the screw rod. 4. A holding means provided on each of the pair of tongues comprises a bracket projecting from the back surface of the tongue and a holding piece rotatably attached to the bracket.
The holding piece is provided with a claw piece that is bent toward the back surface of the tongue piece,
The center seal piece loading in a multiplex cable according to claim 2 or 3, further comprising a spring for urging the holding piece so as to turn the holding piece in a direction to bring the claw piece closer to the back surface of the tongue piece. Equipment. 5. A holding means provided on each of the pair of tongues comprises a bracket projecting from the back surface of the tongue and a holding piece pivotally attached to the bracket via a pivot. The holding piece has a claw piece that faces the back of the tongue and holds the unit cable, and the other end has a locked portion that extends beyond the pivot axis. There is a spring that urges the holding piece to rotate toward the rear side of the tongue piece. When the holding piece is rotated so that the claw piece moves away from the back surface of the tongue piece, the holding piece is locked. 5. A device for loading a central sealing piece in a multiplex cable according to claim 2, 3 or 4, wherein the bracket is provided with a locking means that locks the part in a detachable manner.