JP2000002828A - Optical cable fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely fix an optical cable in an optical cable fixing device for fixing an optical cable to be connected to equipment. SOLUTION: This optical cable fixing device is provided with an attaching part 27 and a fixing part which is fixed to the attaching part 27 and fixes the optical cables 23. A guide member 101, which supports each of the plural optical cables 23 to be freely attachable and detachable and guides them to the fixing part, is arranged on the side of introducing the optical cables 23 on the attaching part 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical cable fixing device for fixing an optical cable connected to a communication device.

[0002]

2. Description of the Related Art Recently, with the development of optical communication networks, communication devices for transmitting information using optical cables have been increasing. In addition, with the development of digital technology, communication devices have been reduced in size, and a large number of communication devices have been accommodated in one device rack. With this, the number of optical cables introduced into the device rack has been reduced. It has increased significantly compared to the past.

On the other hand, in order to reduce the installation area of the equipment rack, a narrow equipment rack has been developed. In response to an increase in the number of lines, the number of equipment racks is increased one by one, so that
Attempts have been made to minimize the installation area of the equipment rack. FIG. 16 shows such a conventional apparatus rack 1, and an upper portion of the apparatus rack 1 houses an introduction unit 5 for introducing the optical cable 3 from above.

[0006] A plurality of storage units 7 are arranged below the introduction unit 5, and each storage unit 7 houses a plurality of communication devices 9. As shown in FIG. 17, a fixing portion 11 for fixing the optical cable 3 and a member fixing portion 13 for fixing the tension member 3a of the optical cable 3 are formed inside the introduction unit 5.

As shown in FIG. 18, fixing members 15a and 15b having a semi-cylindrical cross section are arranged on the fixing portion 11 so as to face each other. The optical cable 3 includes a fixing bracket 15.
It is held in a cylindrical space formed between a and 15b. Then, the optical cable 3 is fixed to the fixtures 15a, 15a.
It is fixed to the fixing part 11 by a screw 17 via b.

[0006] As shown in FIG.
The tension member 3a is screwed to the member fixing portion 13 by a plate-shaped fixing member 15c. The optical fiber cord 3b extending from the tip of the optical cable 3 is connected to one end of the adapter 19a of the connection relay board 19 after the excess length processing. The other end of the adapter 19a is connected to a relay optical cable 20, and the optical cable 20 is connected to the lower communication device 9.

[0007]

However, in such a conventional apparatus frame 1, the optical cable 3 is fixed to the introduction unit 5 by the fixing brackets 15 a and 15 b and the screw 17.
Therefore, since the operation is performed for each optical cable 3 using a finger, a fine operation using a fingertip and a tool is required, and the operation of attaching the optical cable 3 is extremely difficult, and there is a problem that a long operation time is required.

In particular, since the optical cable 3 is formed to be hard by covering the optical fiber cord 3b and the tension member 3a, there are other optical cables 3 hanging in various directions when the optical cable 3 is fixed. In such a case, there is a problem that these optical cables 3 hinder the workability. In addition, when adding a line, the communication function of the communication device 9 is often temporarily stopped.
There has been a problem that the longer the extension work, the lower the reliability of the device.

Also, the conventional fixing brackets 15a and 15b
Since each optical cable 3 to be introduced must be arranged in the introduction unit 5, when a large number of optical cables 3 are introduced into the narrow device rack 1, as shown in FIG. Must be arranged in a staggered manner, and the height of the introduction unit 5 becomes large.

Further, when the fixing brackets 15a and 15b are arranged in a staggered manner, the optical cable 3 on the near side is disposed on the fixing bracket 15b on the back side. However, there is a problem that the optical cable 3 on the near side must be disconnected. The present invention has been made to solve such a conventional problem, and has as its object to provide an optical cable fixing device that can easily and surely fix an optical cable connected to a device.

[0011]

According to a first aspect of the present invention, there is provided an optical cable fixing device comprising: a mounting portion; and a fixing portion fixed to the mounting portion and fixing the optical cable. On the introduction side of the optical cable,
A guide member which detachably supports the plurality of optical cables and guides the plurality of optical cables to the fixing portion is provided.

According to a second aspect of the present invention, there is provided the optical cable fixing device according to the first aspect, wherein the guide member has an opening which is narrower than an outer diameter of the optical cable, and a plurality of recesses for holding the optical cable. Are formed at intervals, and slits for expanding the opening are formed between the recesses. The optical cable fixing device according to claim 3 is the optical cable fixing device according to claim 1 or 2, wherein the fixing portion is fixed to the mounting portion, and the fixing table abuts the optical cables at intervals. And a pressing member that is detachably fixed to the fixed base and presses the optical cable toward the fixed base.

According to a fourth aspect of the present invention, there is provided the optical cable fixing device according to the third aspect, wherein a plurality of first concave grooves for contacting the optical cable are formed on the fixing base at intervals. It is characterized by the following. Claim 5
5. The optical cable fixing device according to claim 4, wherein screw holes are formed in both ends of the fixing base in a direction in which the first concave groove is arranged, and the pressing member has the screw holes. A through-hole for inserting a screw member and fixing the fixing base and the pressing member is formed at a position corresponding to.

According to a sixth aspect of the present invention, there is provided the optical cable fixing device according to the fourth or fifth aspect.
A second groove is formed in the pressing member at a position facing the first groove of the fixing base. The optical cable fixing device according to claim 7 is the optical cable fixing device according to claim 6, wherein at least one of the first and second concave grooves corresponds to the inner peripheral shape of the first or second concave groove. A plate-like spacer is detachably arranged.

According to an eighth aspect of the present invention, there is provided the optical cable fixing device according to any one of the third to seventh aspects, wherein the pressing member has a projecting portion projecting to a side opposite to the fixing base. It is characterized by being.

(Operation) In the optical cable fixing device according to the first aspect, the plurality of optical cables are detachably supported by the guide members and are arranged neatly toward the fixing base, so that the plurality of optical cables interfere with each other. Instead, it is fixed to the fixed part.

Further, when the optical cable is detached from the fixing portion, the detached optical cable is supported at a predetermined position by the guide member, so that the optical cable can be easily replaced.

According to the optical cable fixing device of the present invention, when the optical cable is held in the concave portion of the guide member, the opening of the concave portion is pressed by the optical cable and spreads toward the slit, so that the optical cable is easily held in the concave portion. Is done. After the optical cable is held in the recess, the opening returns to the original shape and becomes narrower than the outer diameter of the optical cable, thereby preventing the optical cable from being detached from the guide member.

In the optical cable fixing device according to the third aspect, each of the optical cables guided and arranged in order by the guide member abuts on the fixing base, and thereafter, the pressing member is fixed to the fixing base while pressing the optical cable. By a single operation, a plurality of optical cables are fixed to the fixing part. In the optical cable fixing device according to the fourth aspect, since each optical cable guided to the fixing base by the guide member is brought into contact with the first groove of the fixing base, the optical cables are neatly arranged at predetermined positions of the fixing base, The work of fixing and removing the optical cable is performed more easily.

In the optical cable fixing device according to the fifth aspect, the screw member is inserted into the through hole of the pressing member and screwed into the screw holes at both ends of the fixing base, whereby the pressing member is easily attached to and detached from the fixing base. In the optical cable fixing device according to the sixth aspect, the periphery of the optical cable is sandwiched between the first concave groove of the fixing base and the second concave groove of the pressing member, and is pressed evenly. It is fixed to a fixed base and a pressing member.

In the optical cable fixing device according to the present invention, the first
Since the plate-like spacer corresponding to the inner peripheral shape is arranged in at least one of the second groove and the second concave groove, the optical cable having a small outer diameter is securely fixed. In the optical cable fixing device according to the eighth aspect, by loosening the fixing of the pressing member to the fixing base, the pressing member tilts to the opposite side of the fixing base due to the weight of the protruding portion, and a gap is formed between the fixing base and the pressing member. Therefore, the optical cable is fixed and removed without removing the pressing member from the fixing base.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment (corresponding to claims 1 to 6) of an optical cable fixing device of the present invention. In FIG.
An introduction unit 25 for introducing the optical cable 23 is accommodated.

In the upper part 25a of the introduction unit 25, an introduction port 25b for introducing the optical cable 23 is formed. An opening 25 is provided on the front surface 25 c of the introduction unit 25.
d is formed. The back surface 25e in the introduction unit 25
On the side, a mounting plate 27, which is a form of a mounting portion, has a back surface 25.
It is fixed parallel to e.

The mounting plate 27 is formed by bending a sheet metal or the like. At the upper end 27a of the mounting plate 27,
A protruding portion 27b that is bent toward the back surface 25e is formed. The protruding portion 27b has a width direction (a front direction in the drawing).
The screw holes 27c are formed at intervals.

The mounting plate 27 has an upper portion 2 on the introduction port 25b side.
At 7d, mounting holes 27e are formed at intervals in the width direction. In the mounting plate 27, mounting holes 27g are formed in the lower portion 27f on the side opposite to the introduction port 25b at intervals in the width direction. A cable guide plate 101, which is an embodiment of a guide member, is provided on the upper surface of the protrusion 27b of the mounting plate 27.
Are arranged to protrude toward the front surface 25c.

As shown in FIG. 2, the cable guide plate 101 is made of a long plate material such as nylon resin and has a thickness of 3 m.
m. The cable guide plate 101 has six arc-shaped concave portions 29 penetrating in the thickness direction at intervals in the longitudinal direction. The formation interval W1 of the concave portion 29 is set to 24 mm, and the inner diameter D1 of the concave portion 29 is set.
Is formed at the same outer diameter D2 of the optical cable 23 as 16 mm.

The opening 31 of the recess 29 has an opening width W
2 is formed to 13 mm. End 31 of opening 31
The distance L1 from a to the center A1 of the concave portion 29 is set to 8.5 mm, which is 0.5 mm larger than the radius of the optical cable 23. For this reason, the concave portion 29 can completely hold the optical cable 23 without protruding from the cable guide plate 101.

In the cable guide plate 101, a slit 33 extending inward is formed between the concave portions 29. The slit 33 has a length L2 of 8.5 mm and a width W3 of 1.6 mm. The slit 33 forms a support 35 having flexibility in the longitudinal direction between the slit 33 and the opening 31.

Here, the support portions 35 on both sides of the opening 31
However, the opening 31 can be widened by 3.2 mm, which is the width of two slits 33, by bending toward the slits 33, respectively. That is, the opening width W2 of the opening 31 can be increased to a maximum of 16.2 mm.

Therefore, the optical cable 23 is pressed from the side toward the concave portion 29 and the opening 31 is widened, so that the optical cable 23 is easily held in the concave portion 29. In addition, the cable guide plate 101 has, outside the recesses 29 located at both ends in the longitudinal direction, end portions 37, 37 having a width W4 of 6.5 mm.
Are formed.

The end 37 has no slit 33 formed therein because the end 37 itself can be bent outward. The cable guide plate 101 is provided with mounting holes 39 on the opposite side of the opening 31 at intervals in the longitudinal direction.
Are formed in three places. Then, as shown in FIG. 1, the cable guide plate 101 is fixed to the mounting plate 27 by screws 41 by aligning the mounting holes 39 of the cable guiding plate 101 with the screw holes 27 c of the mounting plate 27.

The cable guide plate 1 is attached to the mounting plate 27.
Below the reference numeral 01, a fixed base 103 is arranged. On the front surface 25c side of the fixed base 103, a pressing member 105 is disposed so as to oppose. Fixed base 103 and pressing member 105
Is made of an aluminum alloy or the like as shown in FIG.
It is formed in a long rectangular parallelepiped shape.

The fixing table 103 has six semi-cylindrical first concave grooves 43 formed at six locations on the front surface 103a along the longitudinal direction at intervals. The interval at which the first concave grooves 43 are formed is the same as the interval at which the concave portions 29 of the cable guide plate 101 are formed. The inner diameter D3 of the first groove 43 is set to 15 mm, which is 1 mm smaller than the outer diameter D2 of the optical cable 23.

On the front surface 103a of the fixed base 103, screw holes 45 are formed on both sides in the longitudinal direction. Fixed base 103
On the rear surface 103b opposite to the front surface 103a, three screw holes 47 are formed at intervals in the longitudinal direction.
On the other hand, the pressing member 105 has a front surface 10 along the longitudinal direction.
5a, semi-cylindrical second concave grooves 49 are formed at six locations at intervals.

The interval between the formation of the second grooves 49 is the same as the interval between the formation of the first grooves 43. The inner diameter D4 of the second groove 49 is set to 15 mm, which is the same as the inner diameter D3 of the first groove 43. Front surface 105a of pressing member 105
, Through holes 51 are formed on both sides in the longitudinal direction, penetrating from the front surface 105a to the back surface 105b on the opposite side.

The through hole 51 is provided in the screw hole 45 of the fixing base 103.
Is formed at a position corresponding to. The front surface 105a side of the through hole 51 is formed larger than the screw hole 45 of the fixing base 103, and the rear surface 105b side is formed with a screw hole 51a having the same diameter as the screw hole 45 of the fixing base 103. In this embodiment, the fixing table 103 and the pressing member 1
05 is 14 m in length L3 of the first and second concave grooves 49.
m.

Then, as shown in FIG.
The fixing table 103 is fixed to the mounting plate 27 by screws 53 by matching the screw holes 47 of No. 3 with the mounting holes 27 e of the mounting plate 27. Here, the fixing base 103 is provided with the first concave groove 43.
Axis A2 of the center A of the concave portion 29 of the cable guide plate 101
1 and is fixed to the mounting plate 27.

Further, a screw 55 with a neck is inserted into the through hole 51 through the screw hole 51a of the pressing member 105, and
By screwing into the screw hole 45 of the third
And the second groove 49 are opposed to each other,
The pressing member 105 is detachably fixed. In addition, a member fixing base 57 is arranged below the fixing base 103 on the mounting plate 27.

Then, the mounting holes 27g of the mounting plate 27 and the screw holes 57a of the
Thereby, the member fixing base 57 is fixed to the mounting plate 27. A fixing member 61 for fixing the tension member 23 a of the optical cable 23 is detachably fixed to the member fixing stand 57 by a screw 63.

In the above-described optical cable fixing device, the optical cable 23 is fixed in the introduction unit 25 as described below. That is, first, as shown in FIG. 4, the optical cable 23 is introduced from the upper portion 25 b of the introduction unit 25, and is held in the concave portion 29 of the cable guide plate 101. At this time, by pushing the optical cable 23 into the concave portion 29 with one hand, the support portion 35 is deformed and the opening 31 is expanded, so that the optical cable 23 is easily held.

After the optical cable 23 is held in the concave portion 29, the opening 31 returns to the original shape by the restoring force of the support portion 35. Then, the optical cable 23 is supported by the support portion 31, and the optical cable 23 is prevented from coming off the concave portion 29. Similarly, the plurality of optical cables 23 are sequentially held in the concave portion 29 of the cable guide plate 101 and are arranged in order within the introduction unit 25.

Here, the concave portion 29 of the cable guide plate 101
A1 and the axis A2 of the first concave groove 43 of the fixed base 103
And the optical cable 23 is guided in the first concave groove 43 of the fixing base 103 at the same time as being held in the concave portion 29. Next, as shown in FIG. 5, after the screw 55 with the neck is attached to the pressing member 105, the pressing member 105 is arranged so that the second groove 49 faces the first groove 43, The member 105 and the fixed base 103 are fixed.

Then, the optical cable 23 is clamped and clamped between the first and second concave grooves 43 and 49, and is fixed to the fixing table 103 and the pressing member 105. Further, the tension member 23 a of the optical cable 23 is fixed to the member fixing base 57 by the screw 63 and the fixing bracket 61. Next, the optical fiber cord 23b is connected to the lower cable connection plate 65, and as shown in FIG.
3 is fixed in the introduction unit 25.

On the other hand, the fixed base 103 and the pressing member 105
In order to remove the optical cable 23 fixed to the bracket 103, first, the screw 55 with a neck is removed from the fixing base 103. Next, the pressing member 105 is removed from the fixed base 103. Even after the pressing member 105 is removed, the optical cable 23 is supported by the support portion 35 of the cable guide plate 101 and is held by the concave portion 29, so that a state in which the optical cable 23 is orderly arranged in the introduction unit 25 is maintained. .

Then, by pulling the predetermined optical cable 23 toward the front surface 25c of the introduction unit 25, the optical cable 23 is removed from the concave portion 29, and the cable guide plate 10
Removed from 1. In the optical cable fixing device configured as described above, the optical cable 23 is connected to the cable guide plate 10.
1, the held optical cable 23 was sandwiched between the first concave groove 43 of the fixing base 103 and the second concave groove 49 of the pressing member 105. Therefore, before fixing the optical cable 23, first,
By holding the optical cables 23 in the concave portions 29 of the cable guide plate 101, the optical cables 23 can be arranged neatly, and the optical cables 23 can be easily fixed by the fixing base 103 and the pressing member 105 without interference by other optical cables 23. be able to.

Further, even when the pressing member 105 is removed from the fixing base 103, the holding state of the optical cable 23 can be maintained by the cable guide plate 101, so that not only the fixing of the optical cable 23 but also the removal of the optical cable 23 can be performed. Can be done easily. A screw 5 with a neck is provided on both sides of the fixing table 103 and the pressing member 105 in the longitudinal direction.
5 are detachably arranged, and the fixing table 103 and the pressing member 105
And the optical cable 23 is held in a pressed state between
The optical cables 23 can be fixed at one time only by tightening the neck screw 55.

Further, the fixing between the fixing table 103 and the pressing member 105 is performed by using the screws 55 with necks arranged on both sides in the longitudinal direction.
In this case, the interval between the first grooves 43 and the interval between the second grooves 49 can be minimized.
For the fixed base 103 and the pressing member 105 having a limited length,
Many optical cables 23 can be fixed. Then, the opening width W2 of the concave portion 29 of the cable guide plate 101 is formed to be smaller than the outer diameter D2 of the optical cable 23, and the slit 33 is formed between the concave portions 29, so that the optical cable 23 is pressed toward the concave portion 29. The support portions 35 on both sides of the opening 31 bend toward the slit 33 to expand the opening 31, so that the optical cable 23 can be easily held in the recess 29.

After the optical cable 23 is held in the concave portion 29, the opening 31 returns to the original shape due to the restoring force of the support portion 35, and the opening width W2 becomes smaller than the outer diameter D2 of the optical cable 23. The optical cable 23 can be reliably supported by the support portion 35, and the optical cable 23 can be prevented from coming off the cable guide plate 101.
Since the inner diameter D3 of the first groove 43 of the fixed base 103 and the inner diameter D4 of the second groove 49 of the pressing member 105 are smaller than the outer diameter D2 of the optical cable 23, the pressing member 105 is fixed to the fixing base 103. , The optical cable 23 can be securely fixed.

Further, since the inner diameter D3 of the first groove 43 and the inner diameter D4 of the second groove 49 are the same, the optical cable 23 can be evenly placed between the first and second grooves 43, 49. It can be pressed and pinched. Furthermore, since the cable guide plate 101 is formed of a plate material made of nylon resin, the support portions 35 on both sides of the opening 31 of the concave portion 29 can be flexibly deformed, and the optical cable 23 can be prevented from being damaged during holding. Can be.

The cable guide plate 101 has a thickness of 3 m.
m, the concave portion 29, the slit 33
Etc. can be easily formed by using a punching die. FIG. 7 shows a second embodiment (corresponding to claim 7) of the optical cable fixing device of the present invention.

In the figure, the fixing table 203 and the pressing member 205 are formed in substantially the same shape as in the first embodiment. At substantially the center of the first concave groove 43 of the fixing base 203, a locking hole 43a is formed toward the back surface 203b. At approximately the center of the second concave groove 49 of the pressing member 205,
A locking hole 49a is formed toward the back surface 205b.

The optical cable fixing device according to the present embodiment includes an arc-shaped spacer 67 corresponding to the inner peripheral shape of the first and second concave grooves 43 and 49. The spacer 67 is made of a nylon resin or the like, and a locking projection 67b is formed on the convex surface 67a of the spacer 67. Then, the locking projections 67b are connected to the locking holes 43a, 49a.
, The spacer 67 is removably disposed in the first and second concave grooves 43 and 49.

In the optical cable fixing device of this embodiment, the same effects as those of the first embodiment can be obtained. However, in this embodiment, the inner circumferences of the first and second concave grooves 43 and 49 are different. The spacer 67 corresponding to the shape is provided.
By arranging 7 in the first and second concave grooves 43 and 49, the optical cable 23 having a small external dimension can be securely fixed.

Further, the locking projection 67b is formed on the spacer 67, and the locking projection 6 is formed in the first and second concave grooves 43 and 49.
Since the locking holes 43a and 49a for locking the 7b are formed,
The spacer 67 can be easily attached to and detached from the first and second concave grooves 43 and 49. Further, by preparing a plurality of types of spacers 67 having different thicknesses, it is possible to securely fix optical cables having various external dimensions.

FIGS. 8 and 9 show a third embodiment (corresponding to claim 8) of the optical cable fixing device of the present invention. In the drawing, a pressing member 305 is formed in a long shape, and has a second concave groove 4 having the same shape as that of the first embodiment.
9 are formed.

The pressing member 305 has an inclined portion 71 cut obliquely from the upper portion 305b toward the front surface 305a.
It is formed along the longitudinal direction. A protruding portion 73 protruding on the upper side 305b of the pressing member 305 on the side opposite to the front surface 305a is formed along the longitudinal direction. Pressing member 3
The center of gravity of the cross section 05 is biased toward the protruding portion 73 by the inclined portion 71 and the protruding portion 73.

Further, through holes 7 penetrating from the front surface 305a to the back surface 305c are provided on both sides in the longitudinal direction of the pressing member 305.
5 are formed. The length of the through hole 75 is gradually increased toward the front surface 305a, and an inclined portion 75a that is inclined downward is formed in the through hole 75. On the other hand, the fixing base 303 is formed in a long shape, and a first concave groove 43 having the same shape as that of the first embodiment is formed in the front surface 303a.

The fixing table 303 has through holes 77 penetrating from the front surface 303a to the back surface 303b on both sides in the longitudinal direction. The through hole 77 is formed in an elliptical shape facing the longitudinal direction. On the back surface 303b of the fixed base 303,
Screw holes 79 are formed on both sides of the through hole 77 in the vertical direction.

On the back surface 303b of the fixed base 303,
Screw holes 81 are formed at three places at intervals in the longitudinal direction. On the back surface 303b of the fixed base 303, a bag fitting 83 made of sheet metal is arranged. This bag fitting 83
By screwing the screw 85 into the screw hole 79, the fixing base 303 is fixed.
It is fixed to.

A hexagon nut 87 is housed in the bag portion 83a inside the bag fitting 83. Also, in the bag portion 83a,
An insertion hole 83b is formed on the side opposite to the fixing table 303. Here, as shown in FIG.
The height H of 3a is formed smaller than the outer diameter D5 of the hexagon nut 87, and prevents the hexagon nut 87 from rotating in the bag portion 83a.

In the optical cable fixing device described above, the optical cable 23 is fixed to the fixing base 303 and the pressing member 305 as described below. In this embodiment, as shown in FIG. 11, a mounting plate 27 is fixed in advance in a device into which the optical cable 23 is introduced, and the same cable guide plate 101 and a fixed The table 303 is fixed.

The mounting plate 27 is formed with an opening 27h through which the bag fitting 83 projects. And
First, the screw 89 is inserted into the through hole 75 of the pressing member 305. Next, with the screw 89 inserted, the pressing member 3
Numeral 05 is arranged facing the fixing table 303, and the tip of the screw 89 is inserted into the through hole 77 of the fixing table 303.

Then, the screw 89 is screwed into the hexagon nut 87 in the bag portion 83a. At this time, since the through hole 77 of the fixing base 303 is formed in an oval shape, the screw 89
The inside of the through hole 77 can move in the longitudinal direction. Therefore, the screw 89 can be easily screwed into the hexagon nut 87 that is stored in the bag portion 83a and cannot be directly viewed.

Then, the pressing member 305 is temporarily fixed to the fixing base 303 by screwing the screw 89 into the hexagon nut 87. In the temporarily fixed state, of the length under the neck of the screw 89,
The length L3 protruding from the fixing table 303 is determined by the pressing member 30.
5 is longer than the length L4 of the through hole 75.

For this reason, the pressing member 305 is
The screw 89 is inclined to the opposite side to the fixed base 303 by the weight of the screw 89, and the screw 89 is substantially parallel to the inclined portion 75a. A gap 91 opening upward is provided between the fixed base 303 and the pressing member 305.
Are formed. Thereafter, as shown in FIG. 12, the tip of the optical cable 23 is
To be embraced.

Then, the optical cable 23 is slid downward in the concave portion 29 and inserted into the gap 91 between the fixed base 303 and the pressing member 305. Next, as shown in FIG. 13, by tightening the screw 89 to the hexagon nut 87, the inclined pressing member 305 rotates, and the gap 91 is rotated.
Is gradually narrowed. Further, the tip of the screw 89 protrudes from the insertion hole 83b of the bag fitting 83, and is prevented from colliding with the inside of the bag portion 83a.

Then, the optical cable 23 is connected to the fixed base 303.
Are fixed in a pressed state by the first concave groove 43 and the second concave groove 49 of the pressing member 305. On the other hand, when removing the optical cable 23, the screw 89 is first loosened. Due to the loosening of the screw 89, the upper part 305b of the pressing member 305 becomes
The gap 91 is inclined to the opposite side to the fixed base 303 to form the gap 91.

Next, the optical cable 23 is removed from the concave portion 29 of the cable guide plate 101 by holding the optical cable 23 and pulling it toward the pressing member 305. Thereafter, the optical cable 23 is pulled out of the gap 91 and is removed. In the optical cable fixing device configured as described above,
Upper part 305b of pressing member 305 on the side opposite to fixed base 303
A protrusion 73 is formed in the through hole 75, and an inclined portion 75a that is inclined downward toward the fixing base 303 is formed in the through hole 75.
By relaxing the pressing member 9, the pressing member 305 is inclined to the opposite side to the fixing table 303, and the gap 91 can be formed.

For this reason, the optical cable 2
By taking in and out 3, the optical cable 23 can be easily fixed to the fixing base 303 and the pressing member 305. Also, with the screw 89 loosened, the pressing member 3
Since the optical cable 23 can be attached and detached without detaching the optical cable 05, the optical cable 23 can be fixed and detached with good workability.

Further, an oval through hole 75 is formed in the fixing base 303, and a bag fitting 83 containing a hexagonal nut 87 is fixed to the back surface 303b of the fixing base 303, so that the pressing member 305 is attached to the fixing base 303. At this time, the screw 89 can be easily screwed into the hexagon nut 87. In the above-described first embodiment, an example is described in which the mounting plate 27 is disposed in the introduction unit 25 of the apparatus rack 21 and the cable guide plate 101 and the fixing base 103 are fixed to the mounting plate 27. The present invention is not limited to such an embodiment, for example, inside a housing in which a communication device is housed,
The cable guide plate 101 and the fixing base 103 may be directly fixed.

In the above-described first embodiment, an example has been described in which the screw holes 45 are formed on both sides of the fixing table 103 in the longitudinal direction, and the through holes 51 are formed on both sides of the pressing member 105 in the longitudinal direction. However, the present invention is not limited to this embodiment. For example, as shown in FIG. 14, a screw hole 93 is formed between the first concave grooves 43 in addition to the screw hole 45, and The through hole 9 is provided between the second concave grooves 49.
5 may be formed, and in this case, the optical cable 23 can be more reliably fixed.

In the first embodiment described above, the example in which the fixing base 103 and the pressing member 105 are formed of an aluminum alloy has been described. However, the present invention is not limited to such an embodiment. It may be formed of nylon resin or the like. In this case, it is preferable to form the screw holes 93 and the through holes 95 at a plurality of positions as shown in FIG. 14 in consideration of the bending of the resin and the molding accuracy.

In the first embodiment described above, the first concave groove 43 is formed in the fixing base 103, the second concave groove 49 is formed in the pressing member 105, and the first and second concave grooves are formed. 43,
Although the example in which the optical cable 23 is sandwiched between 49 has been described, the present invention is not limited to such an embodiment. For example, the first and second concave grooves 43, 49 without forming the fixing table 1
03 and the front surface 105 of the pressing member 105.
The optical cable 23 may be directly held between the flat surfaces a.

Further, in the above-described second embodiment, an example has been described in which the spacer 67 is detachably disposed in the first and second concave grooves 43 and 49, but the present invention is not limited to this embodiment. For example, the spacer 6
7 may be removably arranged in one of the first and second concave grooves 43 and 49. In the above-described second embodiment, the example in which the spacer 67 having the shape corresponding to the inner peripheral shape of the first and second concave grooves 43 and 49 is formed, but the present invention is limited to such an embodiment. However, for example, as shown in FIG.
An arc-shaped projection 67c may be formed inside the optical cable 23. In this case, slippage of the optical cable 23 can be reliably prevented.

[0075]

According to the optical cable fixing device of the present invention, a guide member for detachably supporting the optical cable and guiding the optical cable to the fixing table is disposed on the optical cable introduction side of the mounting portion, so that the optical cable is supported by the guide member. The optical cables can be arranged neatly toward the fixing base, and the plurality of optical cables can be easily and reliably fixed to the fixing portion without interfering with each other.

Further, even when the pressing member is removed from the fixed base, the optical cables are supported by the guide members, and the orderly arrangement can be maintained, so that the work of replacing the optical cables can be easily performed.

In the optical cable fixing device according to the second aspect, a plurality of recesses for holding the optical cable are formed in the guide member, and a slit is formed between the recesses. Therefore, the optical cable is pressed toward the recess. The opening of the recess extends toward the slit, and the optical cable can be easily held in the recess. Further, since the opening of the concave portion is formed to be narrower than the outer diameter of the optical cable, after the optical cable is held in the concave portion, the opening returns to the original shape, and the optical cable can be prevented from coming off the guide member. .

In the optical cable fixing device according to the third aspect, the fixing portion is provided with the fixing base fixed to the mounting part and the pressing member detachably fixed to the fixing base to press and fix the optical cable. After the optical cable guided by the guide member is brought into contact with the fixed base, the optical cable can be fixed to the fixed base while being pressed by the pressing member, and a plurality of optical cables can be fixed to the fixed portion by a single operation. .

In the optical cable fixing device according to the fourth aspect, since the plurality of first concave grooves are formed in the fixing table, the optical cable guided by the guide member is brought into contact with the first concave grooves to connect the optical cable to the fixing table. The optical cables can be arranged neatly at predetermined positions, and the work of fixing and removing the optical cable can be performed more easily. In the optical cable fixing device according to the fifth aspect, screw holes are formed on both sides of the fixing base, and through holes corresponding to the screw holes are formed in the pressing member. By screwing into the hole, the pressing member can be easily fixed to the fixing base.

In the optical cable fixing device according to the sixth aspect, the pressing member is formed with the second concave groove facing the first concave groove of the fixing base. The optical cable can be held between the first groove and the second groove and pressed evenly, and the optical cable can be more reliably fixed to the fixing portion. In the optical cable fixing device according to claim 7, at least one of the first and second concave grooves includes:
Since the spacer corresponding to the inner peripheral shape of the first or second concave groove is arranged, even when an optical cable having a small outer diameter is fixed, the optical cable can be securely fixed.

In the optical cable fixing device according to the eighth aspect, since the projecting portion is formed on the side opposite to the fixing base of the pressing member, by loosening the fixing of the pressing member to the fixing base, the pressing member is fixed by the weight of the projecting portion. A gap can be formed between the fixed base and the pressing member by being inclined to the side opposite to the base, and the optical cable can be fixed and removed while the pressing member is attached to the fixed base.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of an optical cable fixing device according to the present invention.

FIG. 2 is a perspective view showing a cable guide plate in the first embodiment of the optical cable fixing device of the present invention.

FIG. 3 is a perspective view showing a fixing base and a pressing member in the optical cable fixing device according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a state where an optical cable is held by a cable guide plate.

FIG. 5 is a cross-sectional view showing a state in which the optical cable is fixed to a fixing base and a pressing member.

FIG. 6 is a perspective view showing a state where the optical cable is fixed to a fixing base and a pressing member.

FIG. 7 is a perspective view showing a second embodiment of the optical cable fixing device of the present invention.

FIG. 8 is a perspective view showing a third embodiment of the optical cable fixing device of the present invention.

FIG. 9 is a side view of FIG.

FIG. 10 is a cross-sectional view showing details of a bag fitting.

FIG. 11 is a cross-sectional view showing a state where a screw is loosened and a pressing member is tilted.

FIG. 12 is a cross-sectional view showing a state where the optical cable is held in a concave portion of the cable guide plate.

FIG. 13 is a cross-sectional view showing a state where the optical cable is fixed to a fixing base and a pressing member.

FIG. 14: forming a screw hole between the first grooves of the fixing base;
FIG. 9 is a perspective view illustrating an example in which a through hole is formed between second concave grooves of the pressing member.

FIG. 15 is a perspective view showing an example in which arc-shaped protrusions are formed on a spacer.

FIG. 16 is a front view showing a device rack in which a conventional optical cable fixing device is used.

FIG. 17 is a front view showing details of the cable introduction unit of FIG. 16;

FIG. 18 is an upper sectional view showing details of the cable introduction unit of FIG. 16;

FIG. 19 is a side sectional view showing details of the cable introduction unit in FIG. 16;

[Explanation of symbols]

 Reference Signs List 21 Device rack 23 Optical cable 23a Tension member 23b Optical cable cord 25 Introducing unit 25a Upper 25b Inlet 25c Front 25d Opening 25e Back 27 Mounting plate (mounting portion) 27a Upper end 27b Projecting portion 27c Screw hole 27d Upper portion 27e Mounting hole 27f Lower portion 27f Hole 27h Opening 29 Recess 31 Opening 31a End 33 Slit 35 Support 37 End 39 Mounting hole 41 Screw 43 First concave groove 43a Lock hole 45 Screw hole 47 Screw hole 49 Second concave groove 49a Lock Hole 51 Through hole 51a Screw hole 53 Screw 55 Necked screw 57 Member fixing base 57a Screw hole 59 Screw 61 Fixing bracket 63 Screw 65 Cable connection plate 67 Spacer 67a Convex surface 67b Locking protrusion 67c Projection 71 Inclined portion 73 Projecting portion 75 Through hole 75a inclined Part 77 through hole 79 screw hole 81 screw hole 83 bag fitting 83a bag portion 83b insertion hole 85 screw 87 hexagon nut 89 screw 91 gap 93 screw hole 95 through hole 101 cable guide plate (guide member) 103 fixing base (fixing portion) 103a Front surface 103b Back surface 105 Pressing member (fixed portion) 105a Front surface 105b Back surface 203 Fixed base (Fixed portion) 203b Back surface 205 Pressed member (Fixed portion) 205b Back surface 303 Fixed base (Fixed portion) 303a Front surface 303b Back surface 305 Pressed member (Fixed portion) 305a Front 305b Upper 305c Back A1 center A2 axis D1 inner diameter D2 outer diameter D3 inner diameter D4 inner diameter D5 outer diameter H height L1 distance L2 length L3 length L4 length W1 formation interval W2 opening width W3 width W4 width

Claims (8)

[Claims] 1. An optical cable fixing device comprising: a mounting portion; and a fixing portion fixed to the mounting portion and fixing an optical cable, wherein a plurality of the optical cables are respectively provided on an introduction side of the optical cable of the mounting portion. An optical cable fixing device, wherein a guide member that is detachably supported and guides the fixing portion is disposed. 2. The optical cable fixing device according to claim 1, wherein the guide member has an opening that is smaller than an outer diameter of the optical cable, and a plurality of recesses that hold the optical cable are formed at intervals. An optical cable fixing device, wherein a slit for expanding the opening is formed between the recesses. 3. The optical cable fixing device according to claim 1, wherein the fixing portion is fixed to the mounting portion, and the fixing base contacts the optical cables at intervals, and is attached to and detached from the fixing base. An optical cable fixing device, comprising: a pressing member that is freely fixed and presses the optical cable toward a fixing base. 4. The optical cable fixing device according to claim 3, wherein the fixing base includes a plurality of first cables that contact the optical cable.
The optical cable fixing device, wherein the concave grooves are formed at intervals. 5. The optical cable fixing device according to claim 4, wherein the fixing base is provided at both ends in the arrangement direction of the first groove.
An optical cable, wherein a screw hole is formed, and a through hole for inserting a screw member and fixing the fixing base and the pressing member is formed in the pressing member at a position corresponding to the screw hole. Fixing device. 6. The optical cable fixing device according to claim 4, wherein the pressing member has a second concave groove formed at a position facing the first concave groove of the fixing base. An optical cable fixing device, characterized in that: 7. The optical cable fixing device according to claim 6, wherein at least one of the first and second concave grooves has a plate-like spacer corresponding to an inner peripheral shape of the first or second concave groove. Wherein the optical cable fixing device is detachably disposed. 8. The optical cable fixing device according to claim 3, wherein the pressing member has a protruding portion protruding on a side opposite to the fixing base. Fixing device.