JP3434665B2 - Optical connection holder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical connecting portion holder for fixing a connecting portion box accommodating an optical connector to an optical wiring rack, and particularly, to easily connect the connecting portion box without using screws or the like. The present invention relates to an optical connector holder that can be mounted.

[0002]

2. Description of the Related Art The present applicant has already applied for a core wire selection unit in Japanese Patent Application No. 8-327374. FIG. 9 shows a similar core selection unit 10. The core wire selection unit 10 includes extra length storage cases 1 and 1 for storing extra connection lengths of the respective optical lines for communication, connection portions 2 and 2 connected to the extra length storage case 1, and connection portions. 2 and drive parts 4 and 4 connected to each other by connecting parts 3, 3. These components are arranged and stored on the shelf board 9 of the optical wiring rack 5.

As shown in FIG. 10, the connecting portion 2 is composed of a large number of optical connectors 6, 6 ... To which optical fibers are connected, and a connecting portion box 8 for accommodating these optical connectors 6. The optical fibers 7 connected to the respective optical connectors 6 are bundled and led out to the outside as one connecting portion 3. Then, as shown in FIG.
Are connected to the drive unit 4 by the connecting portions 3, 3.

The drive unit (core wire selection device) 4 is an optical switch, and selects one or several fibers from a large number of connected optical fibers and connects them to the test light incident line side. It is a thing. Conventional core selection unit 1 shown in FIG.
At 0, since the drive unit 4 and the connection unit 2 are separated,
The connection portion 2 can be arranged at any position on the optical wiring rack 5.

[0005]

By the way, in the conventional core selection unit 10, the connection box 8 is connected to the optical wiring rack 5.
It has to be mounted in the desired position inside, but until now there was no suitable support. For example, when fixing with screws, it is necessary to tighten many screws,
There is a drawback that the assembly work is complicated. Further, there is a demand for collectively changing a plurality of optical lines by moving the connection box 8, but fixing with screws makes the transfer work of the connection box 8 complicated. The above-mentioned problem is not limited to the connection box 8 connected to the drive section 2 via the connection section 2, but commonly occurs in mounting various connection box to the core selection unit 10.

Therefore, 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 connecting portion holder in which the connecting portion box can be easily attached to the optical wiring rack.

[0007]

In order to solve the above-mentioned problems, the invention according to claim 1 connects optical fibers.
Multiple optical connectors and connected to the multiple optical connectors
An optical connection holder for mounting a connection box that accommodates a large number of optical fibers on an optical wiring rack, and a holding portion that is detachably engaged with and held by a structural member of the optical wiring rack,
The connecting part box is projected from the holding part in a direction opposite to the structural material, and the connecting part box is projected to the front side of the optical wiring rack.
It is characterized by comprising a holder part which is detachably supported so as to come out .

When the connection box is mounted using this optical connection holder, the connection box is supported by the holder and the holding section is engaged and held by the structural member of the optical wiring rack.
In this way, since the connection box can be mounted on the optical wiring rack without using screws or the like, the mounting work can be performed easily and in a short time. The structural material may be a shelf board of an optical wiring rack or a pillar. Further, the holder part may support the connection part box horizontally or may tilt it obliquely upward to support it. Further, the holding portion includes a clamp plate, a positioning engagement groove, and other means, and a plurality of these means may be provided.

According to the invention of claim 2, the optical contact of claim 1 is provided.
In the connection holder, the optical connector is connected to the optical wiring rack.
The connection box is the holder so that it faces the front side.
It is characterized by being supported by a section. According to the invention of claim 3 , in the optical connecting part holder of claim 1 or 2 ,
It is characterized in that the holding portion is a clamp plate made of a spring material for sandwiching and clamping the structural material. In the present invention, since the clamp plate clamps the structural material, the optical connection part holder can be reliably attached to the structural material. Therefore, it is possible to prevent the situation where the optical connector holder is easily dropped and the optical connector is damaged.

According to the invention of claim 4 , claim 1 or 2
In the optical connecting part holder described above, the holding part is a positioning engagement groove into which the structural material is inserted. In this invention, since the structural material is inserted into the positioning engagement groove, the optical connection portion holder can be reliably mounted on the structural material. Therefore, it is possible to prevent the situation where the optical connector holder is easily dropped and the optical connector is damaged.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of an optical connecting portion holder according to the present invention will be described in detail with reference to the drawings. The same components as those described above are designated by the same reference numerals and detailed description thereof is omitted.

As shown in FIG. 1, the core wire selection unit 20.
Is a large number of extra length storage cases 1 and 1 for accommodating the extra connection lengths of the respective optical lines for communication, and connection portions 2 and 2 connected to the extra length storage case 1 by optical fibers 11. The drive unit 4, which is connected to the connection unit 2 by the connection units 3, 3, ....
4 and optical connection part holders 30, 30 ... For attaching the connection part box 8 of the connection part 2 to the optical wiring rack 5. The connection part 2 is mounted on the upper side of each stage of the extra length storage case 1 by the optical connection part holder 30.

As shown in FIGS. 2 and 3, the optical connecting portion holder 30 has a main body 31, a holding portion 33 releasably engaged with and retained by the optical wiring rack 5, and a positioning for inserting the shelf board 5a. The U-shaped plate 33c forming the engagement groove 33b and the holder 32 for detachably holding the connection box 8 are provided. The holding portion 33 includes a clamp plate 33a made of a spring material that clamps the shelf plate (structural material) 5a, and a positioning engagement groove 33b.

The clamp plate 33a is a U-shaped spring material in a side view, and is fixed by welding so as to project from the main body 31 toward the optical wiring rack 5. The tip of the clamp plate 33a is curved inward and serves as structural material engaging portions 41, 41 that engage with the support column 5b of the optical wiring rack 5 as described later (see FIG. 6).

A bent portion 37 is formed upward at the upper end of the U-shaped plate 33c, and the bent portion 37 is welded to the lower portion of one surface of the main body 31. The inside of this U-shaped plate 33c forms a positioning engagement groove 33b. Further, the tip of the lower plate member is slightly bent downward to form a jig portion 38 that guides the shelf plate 5a to the positioning engagement groove 33b.

On the other hand, the holder portion 32 is formed by bending a plate material in a U-shape in a side view, and has a box storage groove 32a for storing the connection portion box 8 inside thereof. Two holder parts 32 are fixed to the main body 31 by welding on the left and right sides so as to project from the optical wiring rack 5. Also,
The tip of the holder portion 32 is curved to form box engaging portions 36, 36 that engage with the connecting portion box 8.

The optical connector 6 provided in the connecting portion 2 shown in FIG. 3 is a plastic connector (so-called MT type optical connector: JIS C5981).
Mechanically Transferable
e).

The optical connecting portion holder 3 constructed as described above
A method of fixing the connecting portion 2 to the optical wiring rack 5 using 0 will be described. As shown in FIG. 4, the connection box 8, 8 is connected to the box storage groove 32a of the optical connection holder 30,
32a. The holder part 32 is elastically deformed by the insertion of the connection part boxes 8 and 8, and the box storage groove 3
The interval of 2a widens. When the box engagement portion 36 is engaged with the recesses 42, 42 of the connection portion boxes 8, 8,
The upper and lower surfaces of the connection part boxes 8 and 8 are held.

Next, as shown in FIG. 3, while the clamp plate 33a of the optical connection holder 30 is elastically deformed, the shelf plate 5a,
The shelf 5a is inserted into the positioning engagement groove 33b while being inserted between the 5a. The optical connection part holder 30 is mounted at a predetermined position by the positioning engagement groove 33b. In addition, the clamp plate 33a that is about to return is the shelf plates 5a, 5
The optical connection part holder 30 is further secured by being pressed against the plate surface of a.

Then, as shown in FIG. 5, the connection box 8 is mounted so as to project to the front side of the optical wiring rack 5.
The extra length storage case 1 is disposed below the extra length storage case 1, and the optical connector of the optical fiber 11 extending from the extra length storage case 1 is connected to the optical connector 6 of the connection portion 2 to complete the assembly.

As described above, according to the optical connecting portion holder 30 of the present invention, the connecting portion box 8 can be mounted on the optical wiring rack 5 without using screws or the like, so that the mounting work is easy and easy. It can be done in a short time. Further, by stacking the two connection parts 2 and holding them by one optical connection part holder 30, a large number of connection part boxes 8 can be mounted in the limited storage space of the optical wiring rack 5.

When removing the optical connection part holder 30, the positioning engagement groove 33b and the clamp plate 33a are separated from the shelf plate 5a only by pulling out the optical connection part holder 30. In this way, not only the attachment but also the removal can be easily performed, so that the connection of a large number of optical fibers 11 can be changed together with the connection box 8. Also,
If the mounting position is changed within the range of the same shelf board 5a, it is only necessary to move the optical connection part holder 30 in the horizontal direction without removing it.

In this embodiment, the positioning engaging groove 33b and the clamp plate 33a are provided as the holding portion 33, but only one of them may be used. In addition, if the shelf 5a is provided with a convex portion that engages with the structural material engaging portion 41,
In addition, the mounting becomes more reliable. Furthermore, the optical connection part holder 30
Has two connection part boxes 8 and 8, but may have only one connection part box or three or more connection part boxes 8.

Next, another mounting method for the optical connection holder 30 of the present invention will be described. The optical connection part holder 30 can also be mounted on a column (structural material) 5b of the optical wiring rack 5 as shown in FIG.

When mounting, the optical connecting part holder 30 having the connecting part box 8 mounted thereon is placed vertically, and the clamp plate 3 is attached.
The support 5b is attached so as to be sandwiched by 3a. At this time,
One clamp plate 33a is inserted into the upper surface side of the lower shelf plate 5a, and the other clamp plate 33a is inserted into the upper surface side of the upper shelf plate 5a.

The optical connector holder 30 is mounted by engaging the structural material engaging portions 41, 41 (shown in FIG. 2) on the rear surface side of the column 5b. In addition, the clamp plates 33a, 33
Since the end faces in the longitudinal direction of a are in contact with the upper surfaces of the shelf plates 5a, 5a, respectively, it is possible to prevent the optical connection part holder 30 from sliding down along the column 5b.

In this way, the optical connection holder 30 is attached to the support 5
Since it can be mounted vertically on b, the degree of freedom of arrangement increases. Therefore, in addition to the case where it is mounted on the column 5b in a normal use state, it can be mounted at an appropriate position as necessary so as not to hinder work such as connection of an optical fiber.

The connection box 8 is prevented from falling by engaging the box engaging portion 36 of the optical connection holder 30 with the recess 42, but when the connection box 8 is heavy, the optical connection holder is It is possible to more surely prevent the fall by providing an appropriate engaging portion on the 30.

Next, another embodiment of the optical connection holder of the present invention will be described with reference to FIG. The optical connection part holder 50 is composed of a main body 51 which is a bent plate material, a holding part 53 which is detachably engaged and held with the shelf plate 5a, and a holder part 52 which supports the connection part box 8. There is. In addition, in this embodiment, the bending angle of the main body 51 is 125.
It is set to °.

The holding portion 53 is formed in a U-shape in a side view from a plate material, and a positioning engagement groove 53b into which the shelf plate 5a is inserted is formed inside thereof. Further, although not shown, a non-slip rubber sheet is stuck inside the positioning engagement groove 53b. On the other hand, the holder portion 52 is formed from a plate material in a U shape in a side view, and has a box storage groove 52a inside thereof.

The optical connecting portion holder 5 constructed as described above.
When 0 is mounted on the optical wiring rack 5, as shown in FIG.
First, the connection box 8 is provided with two optical connection holders 50, 5
No. 0 box storage grooves 52a, 52a, and the positioning engagement grooves 53b, 53b are fitted and fixed in the shelf board 5a. At this time, the box storage groove 52a and the optical connection part holder 50 face upward or downward from the shelf plate 5a,
7 and 8 show an example of facing upward. Further, it is possible to prevent a situation in which the rubber sheet in the positioning engagement grooves 53b, 53b comes into close contact with the shelf plate 5a, and the optical connection part holders 50, 50 come off and fall.

According to the optical connecting portion holder 50, the connecting portion box 8 can be mounted on the optical wiring rack 5 without using screws or the like, so that the mounting work can be performed easily and in a short time. In addition, the connection box 8 is the optical wiring rack 5
Since it is stably mounted in a state in which it is obliquely directed upward, damage or the like caused by an accidental drop can be prevented. Further, since the optical connector 6 is arranged on the upper side, it is possible to easily connect the optical fibers.

By molding the optical connection part holders 30 and 50 according to the above-described two embodiments with a lightweight material, it is possible to reduce the overall weight and prevent dropping. Further, the weight can be reduced by providing the hollow portion of the plate material as long as the strength of the optical connection portion holders 30 and 50 is not unnecessarily impaired.

Further, although the MT type optical connector is used as the optical connector 6 in the above-mentioned embodiment, the JIS C
It can also be used to mount a so-called SC type optical connector established in 5973, or a connection box having various other plastic connectors (for example, MU connector).

[0035]

As described above, according to the optical connecting portion holder of the first aspect, the optical connecting portion can be mounted on the optical wiring rack without using screws or the like, which facilitates the mounting work. And it can be done in a short time.

According to the optical connecting part holder of the third aspect ,
Since the structural material is held by the clamp plate, the optical connection portion holder can be securely attached, and an accidental situation such as dropping can be prevented.

According to the optical connecting part holder of the fourth aspect ,
Since the structural material is held by the positioning engagement groove, the optical connection portion holder can be securely mounted, and an unexpected situation such as dropping can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a core wire selection device to which an optical connection holder of the present invention is applied.

FIG. 2 is a perspective view showing a configuration of an optical connection portion holder according to the first embodiment.

FIG. 3 is a side view of an optical connecting portion holder.

FIG. 4 is a perspective view illustrating a procedure for mounting the optical connection unit on the optical wiring rack.

FIG. 5 is a side view showing an optical connection portion holder mounted on an optical wiring rack.

FIG. 6 is a perspective view illustrating another mounting method of the optical connection holder.

FIG. 7 is a side view showing the configuration of an optical connection holder according to a second embodiment.

FIG. 8 is a perspective view illustrating a procedure for mounting the optical connection unit holder on an optical wiring rack.

FIG. 9 is a diagram showing a schematic configuration of a conventional core wire selection device.

FIG. 10 is a plan view showing a configuration of an optical connecting section.

FIG. 11 is a perspective view showing a configuration of an optical connecting unit and a driving unit.

[Explanation of symbols]

1 ... Extra length storage case, 2 ... Optical connection part, 3 ... Connection part, 4 ...
Drive unit, 5 ... Optical wiring rack, 5a ... Shelf plate, 5b ... Struts, 6 ...
Optical connector, 8 ... Connection box, 10, 20 ... Core selection unit, 30, 50 ... Optical connection holder, 32, 52
... Holder part, 32a, 52a ... Box storage groove, 33,
53 ... Holding part, 33a ... Clamp plate, 33b, 53b ...
Positioning engagement groove

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Motsu 1440 Rokuzaki, Sakura City, Chiba Prefecture Fujikura Co., Ltd.Sakura Factory (72) Inventor Toru Furukawa 1440 Rokuzaki, Sakura City, Chiba Prefecture Fujikura Sakura Factory Co., Ltd. (72) Inventor Hiroshi Furukawa 1440 Rokuzaki, Sakura City, Chiba Prefecture Fujikura Co., Ltd.Sakura Plant (72) Inventor Yukio Hayashi 1440 Rokuzaki, Sakura City, Chiba Prefecture Fujikura Co., Ltd. (72) Inventor Yoshikazu Nomura 1440 Rokuzaki, Sakura-shi, Chiba Fujikura Co., Ltd. Sakura factory (56) References JP-A-5-203814 (JP, A) Actual development: 6-25816 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02B 6/00 G02B 6/24 G02B 6/36-6/40

Claims (4)

(57) [Claims] 1. A plurality of optical connectors (6) for connecting optical fibers (11), and a plurality of optical connectors connected to the plurality of optical connectors .
An optical connection holder for mounting a connection box ( 8 ) accommodating a large number of optical fibers (7) on an optical wiring rack (5), which is used as a structural material (5a, 5b) of the optical wiring rack. Retaining portions (33, 53) that are engaged and retained in a detachable manner, and project from the retaining portions in a direction facing the structural material, and project the connection box into the front side of the optical wiring rack.
Holder unit for detachably supported so as to output (32, 5
2) and an optical connection holder (3)
0,50). 2. The optical connector is a front side of the optical wiring rack.
The connection box is attached to the holder part so that
The optical connection part according to claim 1, wherein the optical connection part is supported by
holder. Wherein said holding portion, claim 1 or 2 optical connection portion holder, wherein the sandwich said structural member is a clamping plate made of a spring material for clamping (33a). Wherein said holding unit, according to claim 1 or 2 optical connection portion holder, wherein the said structural member is a positioning engaging groove which plugs (33b, 53b).