JP3071279U - Optical fiber connection storage tray and optical fiber connection storage unit - Google Patents

Abstract

(57) [Summary] [Problem] To realize both simplification and safety of connection work,
Provided are an optical fiber connection storage tray and an optical fiber connection storage unit that dramatically improve the usability of an optical fiber cable distribution board. In normal times, a first tray (100 g) and a second tray (1) are used.
00h is made substantially parallel to the connector 100c by the strip 100j of the second tray, and at the time of connection work, the second tray 100h is rotated to connect the connector 100c of the first tray.
And an optical fiber connection storage tray and an optical fiber connection storage unit.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an optical fiber connection receiving tray which is arranged in an optical fiber cable distribution board and connects and connects an optical fiber cable drawn in from outside the office and an optical fiber cord drawn in from inside the office, and the optical fiber. The present invention relates to an optical fiber connection storage unit that stores a connection storage tray.

[0002]

[Prior art]

 There have been various types of optical fiber connection storage trays and optical fiber connection storage units arranged in the optical fiber distribution frame, and the present applicant has also made practical use of the invention relating to these optical fiber connection storage trays and optical fiber connection storage units. A new model has been filed, and the utility model has been registered as Utility Model Registration No. 3065295. Hereinafter, the optical fiber connection storage tray and the optical fiber connection storage unit according to the registered utility model will be schematically described with reference to the drawings. FIG. 15 is an external view of an optical fiber distribution board. The optical fiber distribution board houses an optical fiber connection storage tray and an optical fiber connection storage unit.

The cabinet 1 is provided with inlets 2 on the bottom surface, the flat surface, and the left and right sides, and an optical fiber cable 3 is coated from the outside of the office through a desired inlet 2 and is covered with high-tensile fiber vinyl. The optical fiber cord 4 is introduced from inside the station. In the present embodiment, the optical fiber cable 3 is introduced from the inlet 2 opened to the left as viewed from the bottom, and the optical fiber cable 4 is introduced from the inlet 2 opened to the right toward the bottom. And

FIG. 16 is an inside view of an optical fiber distribution board, in which FIG. 16A is an inside view with a cabinet door removed, and FIG. 16B is a sectional view taken along line AA. In the cabinet 1, optical fiber connection / accommodation units 5 having the same shape are accommodated in a state of being stacked in multiple stages (10 stages in FIG. 16). Inside the cabinet 1, a cable fixing rail (not shown) for accommodating and fixing the optical fiber cable 3 and the optical fiber cord 4 is provided, and the plurality of optical fiber cables 3 and the optical fiber cords 4 are arranged. Can be accommodated.

The round guide 6 is a circular or semi-circular guide for wiring the optical fiber cable 3 or the optical fiber cord 4, and the optical fiber cable 3 or the optical fiber cord 4 To prevent excessive bending. The optical fiber cable 3 and the optical fiber cord 4 wired in this manner are extended to the optical fiber connection and accommodation unit 5.

FIG. 17 is an enlarged external view of the optical fiber connection storage tray and the optical fiber connection storage unit. FIG. 17A is a plan view of the optical fiber connection storage unit when the top plate is removed. FIG. 17B is a front view of the optical fiber connection housing unit. The optical fiber connection storage unit 5 is provided with a storage section for storing the optical fiber connection storage trays 7 in a state of being stacked in multiple stages (10 stages in FIG. 17B). This storage section is configured so that the optical fiber connection storage tray 7 can be pulled out.

In addition to the optical fiber connection storage tray 7, a spare tray 7a is also stored at the bottom. The spare tray 7a stores the spare optical fiber cable 3, the optical fiber cord 4, or the extra length before and after the connection. In the prior art, one unit is composed of ten optical fiber connection storage trays 7 and one spare tray 7a. In this optical fiber distribution board, a total of 110 optical fiber connection storage trays 7 of 10 units are installed.

The wiring connection of the optical fiber cable 3 and the optical fiber cord 4 in the optical fiber connection storage tray 7 will be described. As shown in FIG. 17A, the optical fiber cable 3 is introduced into the optical fiber connection storage tray 7, and fixed when clamped by the clamp portion 7b. The optical fiber cable 3 contains a plurality of (for example, 12) tape cores 3a coated with UV resin, and one or two cores (hereinafter collectively referred to as a single core). Simply called a tape core wire). Now, a plurality of tape core wires 3a are pulled out from the optical fiber cable 3, and the extra length is accommodated in a winding state in an extra length storage portion 7c which is a storage space provided on the optical fiber connection storage tray 7. .

The tip of the tape core wire 3 a is fusion-spliced to one end of a simple receptacle 8 which is an optical code used only in the optical fiber connection storage tray 7. One end of this simple receptacle 8 has two cores and four cores collectively so as to match the number of cores of the tape core wire 3a, and the other end is connected to an internal plug described later, one core wire at a time.

A fusion sleeve 9 is covered so as to cover a fusion spliced portion between the tape core wire 3 a and the simple receptacle 8. The fusion splice is protected from the external environment and reduces the likelihood of the splice breaking. These fusion sleeves 9 are held and fixed by a fusion sleeve holding portion 7d. The extra length of the simple receptacle 8 is accommodated in a winding state in the extra length accommodation portion 7c described above, and the other end of the simple receptacle 8 is connected to an internal plug.

The internal plug is formed so as to be connectable to a connector 10 which is a specific example of a connection portion arranged on the optical fiber connection storage tray 7. The connector 10 is configured to connect an internal plug and an external plug described later from both directions, and any type and form may be used as long as the optical fiber is optically connected. In the prior art, eight internal / external plugs can be connected to one connector 10. Further, as shown in FIG. The fiber connection storage tray 7 is designed to connect a total of 24 internal and external plugs.

An external plug that can be connected by the connector 10 is connected at the tip of the optical fiber cord 4. By connecting the connector 10 and the external plug, the simple receptacle 8 and the optical fiber cord 4 are optically connected. Can connect. The plurality of optical fiber cords 4 are bundled by the guiding section 7e so as to be bundled, and are led out from the side of the optical fiber connection receiving tray 7.

As shown in FIG. 17A, the connector 10 is arranged such that the optical fiber connection storage tray 5 is pulled out of the optical fiber connection storage tray 7 from the connector 10 in the direction of pulling out. The insertion and removal direction for inserting and removing is oblique. The reason for this arrangement is that, when the external plug is pulled out from the connector 10 such that the pull-out direction of the optical fiber connection storage tray 7 and the pull-out direction of the external plug coincide with each other, depending on the position of the worker, the external plug is pulled out of the connector 10 This is because the irradiated coherent laser light may enter the eyes and cause visual impairment.

Therefore, as shown in FIG. 17A, the connector 10 is arranged so that the front surface faces obliquely. Therefore, even if the external plug is pulled out from the connector 10 while standing on the front surface of the cabinet 1, the directivity is remarkably large. The possibility that high laser light is directly incident on the eyes is reduced. The prior art was such.

[0015]

[Problems to be solved by the invention]

 In the optical fiber cable distribution board of the prior art, the optical fiber connection storage tray in which the connector 10 is disposed on the front side is arranged in a multi-tiered arrangement by the optical fiber connection storage unit, so that the connectors 10 are arranged in a two-dimensional dot matrix. Therefore, the worker could easily perform the connection work only by replacing the external plug without pulling out the optical fiber connection storage tray.

However, while enjoying the above-described excellent effects, there are also problems. For example, as is clear from FIGS. 16 and 17, since the external plug inserted into the connector 10 is exposed, the operator accidentally hooks the external plug and the optical fiber cord 4 during the connection work. Therefore, there is a possibility that the external plug is removed from the connector 10. In the worst case, there is a possibility that a line failure may occur, so this is a problem to be avoided.

Further, in the prior art, as is apparent from FIG. 16, there is a problem that the external plug / fiber fiber code is exposed outside in a wide range, and the operator needs to be careful. While maintaining the high workability that the connection work can be easily performed only by replacing the external plug as in the effect of the invention of the prior art as described above, the detachment of the external plug during the connection work is maintained. There is a need for an optical fiber connection storage tray and an optical fiber connection storage unit that have the trade-off effects of reliably preventing them.

The present invention has been made to overcome the above-described problems, and realizes both simplification and safety of connection work, and dramatically improves the usability of an optical fiber cable distribution board. A tray and an optical fiber connection housing unit are provided.

[0019]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, an optical fiber connection storage tray according to claim 1 is an optical fiber connection storage tray that stores an optical fiber cable and an optical fiber cord by wiring connection via a simple receptacle. A tray, an extra length accommodation portion provided on the first tray to accommodate the tape core wire drawn from the optical fiber cable and the extra length of the simple receptacle, and the tip of the tape core wire and one end of the simple receptacle are fused. A fusion sleeve holding portion disposed on the first tray so as to retain a fusion sleeve for protecting the fusion spliced portion; an internal plug attached to the other end of the simple receptacle; and an external optical fiber. An external plug attached to the end of the cord is optically connected from both inside and outside of the first tray. And a second tray having a strip covering the connection terminal of the first tray when viewed from the front, wherein the first tray and the second tray are substantially parallel to each other in normal times. The connection portion is covered and covered by a strip, and the connection terminal of the first tray is exposed by rotating the second tray during the connection operation.

The optical fiber connection storage tray according to claim 2 is the optical fiber connection storage tray according to claim 1, wherein a name display portion is provided on the second tray, and the second tray is rotated. The information display is characterized by exposing the name display section together with the connection terminal.

The optical fiber connection storage tray according to claim 3 is the optical fiber connection storage tray according to claim 1 or 2, attached to the first tray and rotating the second tray. A processing auxiliary plate that supports the optical fiber cord so as to reduce the movement of the optical fiber code when it is moved, and an optical output that is attached to the processing auxiliary plate and emitted from the connection terminal when the external plug is pulled out from the connection terminal And a warning display unit for warning that direct viewing is prohibited.

The optical fiber connection storage tray according to claim 4 is the optical fiber connection storage tray according to claim 1, wherein the front surface of the connection terminal is arranged in a direction in which the optical fiber connection storage tray is inserted and removed. It is characterized by being arranged to face diagonally.

According to a fifth aspect of the present invention, there is provided an optical fiber connection and accommodation unit configured to stack and store the optical fiber connection and accommodation trays according to any one of the first to fourth aspects in multiple stages. As a unit, pull out the desired optical fiber connection storage tray and rotate the second tray to expose the connection terminal for connection work, and attach the external plug at the end of the optical fiber cord from the outside in front of the connection terminal. It is characterized by the following.

The optical fiber connection and accommodation unit according to claim 6 is the optical fiber connection and accommodation unit according to claim 5, wherein a first tray lock portion for fixing the optical fiber connection and accommodation tray at the tray accommodation position; A second tray lock portion that locks at the connection terminal exposure position that exposes the connection terminal by rotating the second tray of the optical fiber connection storage tray, and a situation where the optical fiber connection storage tray detaches from the optical fiber connection storage unit. And a third tray lock unit for preventing the tray.

The optical fiber connection / accommodating unit according to claim 7 is the optical fiber connection / accommodating unit according to claim 6, wherein the first tray lock unit includes a first tray and a second tray of the optical fiber connection / accommodating tray. A slide portion having a tray slide groove for sliding the tray, a protruding cam portion provided on the front side in the drawing direction of the tray slide groove of the slide portion, and a portion between the tray slide groove and the protruded cam portion of the slide portion. And a hole provided in the second tray of the optical fiber connection storage tray, into which the projection is fitted. The optical fiber is fitted into the hole when locked by the first tray lock. When restraining the movement of the connection storage tray and releasing the lock by the first tray lock unit, lift the second tray of the optical fiber connection storage tray upward. Characterized that you draw the optical fiber connection receiving tray by diverting move projection over the projecting cam portion is pulled out the projection from the hole.

The optical fiber connection / accommodating unit according to claim 8 is the optical fiber connection / accommodating unit according to claim 6 or 7, wherein the second tray lock unit is configured to: A slide lock portion for crossing the tray slide groove for sliding the tray and the second tray and restraining a stopper strip of the first tray; and a spring for urging the slide lock portion to move in one direction. And a lock rod for moving the slide lock portion against the force urged by the spring portion. When the slide lock portion is locked by the second tray lock portion, the spring portion urges the slide lock portion and the transfer groove. And the tray slide groove do not coincide with each other in the horizontal direction so as to prevent the stopper strip of the first tray from passing therethrough. In order to release the optical fiber connection storage tray, the lock rod is operated to move the slide lock portion so that the transfer groove and the tray slide groove are aligned with each other in the horizontal direction.

The optical fiber connection and accommodation unit according to claim 9 is the optical fiber connection and accommodation unit according to any one of claims 6 to 8, wherein the third tray lock unit is an optical fiber connection unit. And a stopper for preventing the connection storage tray from passing through the first tray and the second tray and colliding with a stopper strip provided on the second tray. The optical fiber connection storage tray from coming off the tray slide groove when the stopper for stopper comes into contact with the stopper strip, and when releasing the lock by the third tray lock part, remove the stopper for preventing falling off. The optical fiber connection storage tray is pulled out.

[0028]

[Embodiment of the invention]

 Hereinafter, embodiments of the optical fiber connection storage tray and the optical fiber connection storage unit of the present invention will be described with reference to the drawings. The optical fiber distribution box in which the optical fiber connection storage tray and the optical fiber connection storage unit are stored is the same as the optical fiber distribution panel described as a conventional technique with reference to FIGS. The description is omitted because there is, and only the optical fiber connection storage tray and the optical fiber connection storage unit will be described.

FIG. 1 is a front view of the optical fiber connection storage tray and the optical fiber connection storage unit of the present embodiment, and FIG. 2 is a plan view of the optical fiber connection storage unit of the present embodiment with the top plate removed. FIG. 3 is a left side view of the optical fiber connection housing unit of the present embodiment, and FIG. 4 is a right side view likewise. As shown in FIG. 1, the optical fiber connection storage unit 50 stores the optical fiber connection storage trays 100 in a state of being stacked in multiple stages (12 in FIG. 1).

As shown in FIGS. 2 and 3, the optical fiber connection housing unit 50 includes a plurality of tray slide grooves (described later) for sliding the optical fiber connection housing tray 100 (in this embodiment, 12 stages). ) Are fixed to the L-shaped angles 50b and 50c and provided in multiple stages. A plurality of clamps 50d for holding an optical fiber cable 110 described later are attached to the L-shaped angle 50c in multiple stages.

As shown in FIGS. 2 and 4, the optical fiber connection / accommodation unit 50 includes a plurality of (12 steps in this embodiment) tray slide grooves (described later) for sliding the optical fiber connection / accommodation tray 100. Has a slide portion 50e integrally provided. As is apparent from FIG. 2, a hat-shaped member 50f is attached to the slide portion 50e, and a clamp portion 50g for holding an optical fiber cord 120 described later is attached in multiple stages. The slide portions 50a and 50e and the L-shaped angle 50b are fixed by the back plate 50h to form the optical fiber connection housing unit 50.

Next, the optical fiber connection storage tray 100 and the wiring connection of the optical fiber cable 110 and the optical fiber cord 120 on the tray will be described. FIG. 5 is an explanatory diagram of the wiring connection of the optical fiber connection storage tray of the present embodiment. As shown in FIG. 5, the optical fiber cable 110 is introduced into the optical fiber connection housing tray 100 after being clamped by the clamp portion 50d attached to the optical fiber connection housing unit 50. A plurality of tape core wires 110a are pulled out from the optical fiber cable 110, and the extra length is accommodated in the extra length accommodating portion 100a, which is an accommodation space provided on the optical fiber connection accommodation tray 100, in a wound state.

The tip of the tape core wire 110 a is fusion-spliced to one end of a simple receptacle 130 which is an optical cord used only in the optical fiber connection storage tray 100. One end of this simple receptacle 130 has two cores and four cores so as to match the number of cores of the tape core 110a, and the other end is connected to the internal plug 150 one core at a time.

The fusion spliced portion between the tape core wire 110 a and the simple receptacle 130 is covered with a fusion sleeve 140. This fusion sleeve 140 protects from the external environment and reduces the risk of disconnection. These fusion sleeves 140 are held and fixed by the fusion sleeve holding portion 100b. The extra length of the simple receptacle 130 is also accommodated in the extra length accommodation portion 100a described above in a wound state.

The internal plug 150 is formed so as to be connectable to a connector 100 c which is a specific example of a connection terminal arranged on the optical fiber connection storage tray 100. The connector 100c is configured to connect the internal plug 150 and an external plug 160, which will be described later, from both directions, and may be of any type and form as long as the optical fiber is optically connected.

In the present embodiment, eight internal plugs 150 and eight external plugs 160 can be connected to one connector 100c, and five connectors 100c are arranged as shown in FIG. In addition, one optical fiber connection storage tray 100 is configured so that a total of 40 internal plugs 150 and external plugs 160 can be connected. When performing the coupling operation, the optical fiber connection storage tray 100 is pulled out, and the second tray (described later) is rotated and then coupled, which will be described later in detail.

The external plug 160 which can be connected by the connector 100 c is connected at the tip of the optical fiber cord 120. By connecting the connector 100 c and the external plug 160, the simple receptacle 130 and the optical fiber cord 120 are connected. Can be connected optically. The optical fiber cords 120 are bundled by a clamp part 100d and a processing auxiliary plate 100e, which will be described later, attached to the first tray so as to be bundled, and are led out from the side of the optical fiber connection storage tray 100.

As shown in FIG. 5, the arrangement of the connector 100 c is such that the external plug 160 is inserted and removed from the connector 100 c in the pulling-out direction when pulling out the optical fiber connection storage tray 100 from the optical fiber connection storage unit 50. The insertion / removal direction is oblique. The reason for this arrangement is that when the external plug is pulled out from the connector 100c such that the pull-out direction of the optical fiber connection storage tray 100 matches the pull-out direction of the external plug, depending on the position of the worker, the connector 100c This is because the coherent laser light emitted from the eye may enter the eyes and cause visual impairment.

Therefore, since the connector 100c is disposed so that the front surface faces obliquely, even if the external plug 160 is pulled out from the connector 100c at the front surface of the optical fiber connection storage tray 100, laser light with extremely high directivity is not observed. It is possible to reduce the possibility of direct incidence on the surface. As shown in FIGS. 6 and 7, the processing auxiliary plate 100e has a warning display unit 100f for warning that the direct output of the light output from the connector 100c is prohibited when the external plug 160 is pulled out from the connector 100c. It is installed and alerts workers, which can enhance work safety.

Subsequently, the configuration and operation of the optical fiber connection storage tray 100 will be described. FIG. 6 is a partial configuration diagram of the optical fiber connection storage tray of the present embodiment in which the second tray is pulled out, and FIG. 7 is a partial configuration diagram of the optical fiber connection storage tray of the present embodiment in which the second tray is rotated. FIG. 8 is a schematic side view of the optical fiber connection storage tray of the present embodiment in which the second tray is rotated.

As shown in FIG. 6A, the optical fiber connection storage tray 100 includes a first tray 100 g, a second tray 100 h, and a hinge 100 i. The hinge 100i allows the second tray 100h to be rotatable with respect to the first tray 100g. As shown in FIGS. 6A and 6B, a strip 100j is provided at the tip of the second tray 100h, and before the second tray 100h rotates, the strip 100j is rotated. As shown in FIG. 8A, the strip 100j covers and conceals the connector 100c when viewed from the front. The same is true before the second tray is pulled out.

When the second tray 100h is pulled out to the connection terminal exposure position (described later) as shown in FIG. 6A by pulling the optical fiber connection storage tray 100 forward, the second tray 100h rotates. Then, the second tray 100h moves down. As shown in FIGS. 7A, 7B and 8B, the name display section 100k is exposed together with the connector 100c on the second tray 100h that has been lowered.

The name display section 100k is a piece of paper or the like in which an instruction for identifying which internal plug 150 is connected to which connector 100c is written, and the name display section 100k is connected to the second tray 100h. Is pasted inside. It is to be noted that the display name display section 100k can employ various kinds of paper sheets, such as a pre-printed plastic plate and a vinyl sheet, in addition to a piece of paper.

When pulling out the optical fiber connection storage tray 100, a finger is put into the cutout 100l shown in FIG. 6B, and the strip 100j is picked out. A pick position indicating unit 100m is provided to inform the worker of this pulling method. Concretely, it is a picture that is picked up with a finger, so that the worker can easily understand and instantly recognize the drawing method.

The processing auxiliary plate 100e is fixed to the first tray 100g as shown in FIG. 6A, and a notch provided on the front side of the slide portion 50e as shown in FIGS. It is arranged so as to protrude from the part to the outside of the slide part 50e, and moves together with the optical fiber connection storage tray 100. Accordingly, the optical fiber cord 120 placed on the processing auxiliary plate 100e also moves together with the optical fiber connection storage tray 100.

Note that the processing route of the optical fiber cord 120 is shown by oblique lines on the processing auxiliary plate 100e as shown in FIG. If the code 120 is wired, it can be satisfactorily wired. The structure of the optical fiber connection storage tray 100 is as described above.

Subsequently, the first tray lock unit, the second tray lock unit, and the third tray lock unit according to the present embodiment will be described. The first tray lock unit 200 fixes the optical fiber connection storage tray at the tray storage position. The second tray lock portion 300 is for fixing the optical fiber connection storage tray at a connection terminal exposure position where the second tray is rotated to expose the connection terminals. The third tray lock section 400 prevents the optical fiber connection storage tray from being detached from the optical fiber connection storage unit.

First, the first tray lock unit 200 will be described. FIG. 9 is an explanatory diagram illustrating the first tray lock unit of the present embodiment, and FIG. 10 is an explanatory diagram illustrating the operation of the first tray lock unit. The first tray lock unit 200 is a lock unit that uses the slide unit 50a of the optical fiber connection storage unit 50 and the second tray 100h of the optical fiber connection storage tray described above. The first tray lock portion 200 of the present embodiment includes a tray slide groove 200a, a protruding cam portion 200b, and a hole portion 200c provided on the slide portion 50a, and a protrusion 200d provided on the second tray 100h. Has become.

The tray slide groove 200a is provided on the side of the slide portion 50a, and has a function of sliding the first tray 100g and the second tray 100h of the optical fiber connection storage tray 100. The protruding cam portion 200b is provided at the front end of the tray slide groove 200a of the slide portion 50a and on the near side with respect to the drawing direction of the optical fiber connection storage tray 100.

The hole portion 200c is provided between the tray slide groove 200a of the slide portion 50a and the protruding cam portion 200b. The protrusion 200d is a protrusion provided on the front side of the second tray 200h, as shown in FIGS. When locked by the first tray lock unit 200, the optical fiber connection storage tray 100 is at the tray storage position. As shown in FIG. 10B, the optical fiber connection storage tray 100 is fitted with the protrusion 200d in the hole 200c. In this state, the movement of the storage tray 100 is restricted.

To release the lock by the first tray lock unit 200, the second tray 100h of the optical fiber connection storage tray 100 is lifted upward (FIG. 10C), and the protrusion 200d of the second tray 100h is opened. In a state of being pulled out from the portion 200c, the protrusion 200d is detour-moved above the protrusion cam portion 200b (FIG. 10D), and the second tray 100h of the optical fiber connection storage tray 100 is lowered again (FIG. 10E). )), And thereafter, the optical fiber connection storage tray 100 is normally pulled out. According to the first tray lock unit 200, the lock mechanism can be configured with a simple shape.

When the optical fiber connection storage tray 100 is continuously pulled out, the second tray lock unit 300 causes the second tray 100 h to move as shown in FIGS. 7A, 7B, and 8 B. The movement of the optical fiber connection storage tray 100 is stopped at the connection terminal exposure position that is opened to expose the connection terminals. The second tray lock unit 300 will be described.

FIG. 11 is an explanatory diagram for explaining a slide lock portion of the second tray lock portion, and FIGS. 12 and 13 are explanatory diagrams for explaining the second tray lock portion. The second tray lock portion 300 is a lock portion that uses the slide portion 50e of the optical fiber connection storage unit 50 described above and the first tray 100g of the optical fiber connection storage tray.

As shown in FIGS. 11 to 13, the second tray lock portion 300 of the present embodiment includes a tray slide groove 300a provided in the slide portion 50e and a slide lock slidably disposed in the slide portion 50e. A slide groove 300c, a lock rod groove 300d provided in the slide lock part 300b, a spring part 300e, a lock rod 300f, and a stopper strip 300g provided in the first tray 100g. The stopper strip 300g provided on the first tray 100g is arranged on both sides at the back of the optical fiber connection storage tray 100 as shown in FIG.

FIG. 11A shows the right side of the slide lock portion 300b, FIG. 11B shows the front side, and FIG. 11C shows the left side. As shown in FIGS. 11A and 11B, the slide lock portion 300b has a transfer groove 300c that crosses the tray slide groove 300a of the slide portion 50e. Further, it has a lock rod groove 300d with which the lock rod 300f contacts. The slide lock portion 300b is arranged so that the slide lock portion 300b can be slid only in the up-down direction by a stopper (not shown) of the slide portion 50e, and the spring portion 300e as shown in FIG. It is placed in a state where it is biased downward as indicated by the arrow.

Inside the slide portion 50e, as shown in FIGS. 12B and 12C, the transfer groove 300c of the slide lock portion 300b is connected to the first tray 100g and the second tray 100g of the optical fiber connection storage tray 100. It is made to cross the tray slide groove 300a for sliding the tray 100h.

Normally, as shown in FIGS. 12B and 12C, the spring portion 300e is urged by the slide lock portion 300b to maintain the state shown in FIG. 12, and the transfer groove 300c and the slide groove 300a are The first tray 100g is prevented from passing through the stopper strip 300g so that they do not coincide with each other in the horizontal direction. When the optical fiber connection storage tray 100 is stopped at this position, the connection terminal exposure position opens the second tray 100h as shown in FIGS. 7A, 7B, and 8.

After releasing the first tray lock unit 200, the worker pulls out the optical fiber connection storage tray 100 until the movement is restricted by the second tray lock unit 300. After the storage tray 100 is stopped, the second tray 100h is rotated to expose the connector 100c, so that the workability can be improved by pulling out the optical fiber connection storage tray 100 without being conscious of the stop position.

According to the second tray lock portion 300, the lock mechanism can be configured with a simple shape. Further, since the amount of pull-out is small, an excessive bending force is applied to the tape core 110a of the optical fiber cable 110 and the simple receptacle 130, so that a situation in which the fusion spliced portion is detached does not occur. In addition, it is possible to prevent the optical fiber connection storage tray 100 from being pulled out too much.

Although the second tray lock unit 300 is not released in a normal connection operation, the second tray lock unit 300 is released in a case where the connection of the internal plug is changed or a new fusion splicing operation is performed. Then, the optical fiber connection storage tray 100 is pulled out. The release operation of the second tray lock unit 300 in such a case will be described.

To release the lock by the second tray lock unit, when the lock bar 300f is pushed in the direction of the arrow shown in FIG. 13A, the lock bar groove 300d and the lock bar 300f come into contact with each other and the spring unit 300e is pressed. The slide lock portion 300b is pushed upward against the urging force of. The pushed-up slide lock portion 300b rises together with the transfer groove 300c as shown in FIGS. 13B and 13C, and the transfer groove 300c and the tray slide groove 300a are aligned in the horizontal direction. If the optical fiber connection storage tray 100 is pulled out in such a state, the optical fiber connection storage tray 100 moves to the near side.

When the optical fiber connection storage tray 100 is pulled out to the near side, the optical fiber connection storage tray 100 is pulled out too far, and the optical fiber connection storage tray 100 is detached from the optical fiber connection storage unit 50 and falls. There are some cases like this. In such a case, the internal plug 150 and the external plug 160 may fall off from the connector 100c and cause a line failure. In order to prevent such a situation, a third tray lock unit 400 is provided.

FIG. 14 is an explanatory diagram illustrating a third tray lock unit of the present embodiment. The third tray lock portion is provided with a stopper 400a at the entrance of the two tray slide grooves 200a and 300a of the slide portions 50a and 50e. As shown in FIGS. 14A and 14C, the stopper 400a allows the first tray 100g and the second tray 100h to pass through, but the stopper strip of the first tray 100g described above. 300 g is not allowed to pass.

Even when trying to pull out the optical fiber connection storage tray, the stopper strip 300g abuts on the stopper 400a, as shown in FIG. According to the third tray lock unit 400, it is possible to prevent the optical fiber connection storage tray 100 from being detached from the optical fiber connection storage unit 50.

The lock release by the third tray lock unit 400 can be realized by removing the stopper 400 a for preventing falling off and pulling out the optical fiber connection storage tray 100. Since such a work is limited at the beginning of the optical fiber cable wiring and the like, an attachment method is selected such that the stopper 400a for preventing falling off can be firmly fixed by screwing.

The first and second locking mechanisms work when the optical fiber connection storage tray 100 is pulled out, but when the optical fiber connection storage tray 100 is pressed, it can be easily pressed. The reason for this is that, in the second tray lock portion 300, the transfer groove 300c of the slide lock portion 300b is widely opened to the front side, and the stopper strip 300g to be pushed in can be inserted into the transfer groove 300c without using the lock rod 300f. This is to guide and pass through.

Similarly, in the first lock portion 200, the protruding cam portion 200b also has a cam curve such that the opening is widened toward the near side, and the protruding portion 200d of the second tray 100h to be pushed is positioned upward. This is to guide and pass through. Thus, after the work is completed, the work can be further improved because the optical fiber connection housing tray 100 can be housed in the optical fiber connection housing unit 50 simply by pushing the tray.

[0068]

[Effect of the invention]

 As described above, since the optical fiber connection storage trays are arranged in multiple layers in the optical fiber connection storage unit of the present invention, the operator selects a desired optical fiber connection storage tray in the optical fiber cable distribution board, and then selects the external fiber connection storage tray. The connection work can be easily performed simply by replacing the plug.

Further, other external plugs and optical fiber cords are not exposed to the outside, and there is no need for the worker to take unnecessary care to prevent the external plugs and optical fiber cords from being hooked on the external plugs and the optical fiber cords, and the connection work is safe. Can also be increased. Provided are an optical fiber connection storage tray and an optical fiber connection storage unit that have both the effects of having a trade-off relationship of ensuring easy connection work and reliably preventing detachment of the external plug during connection work. .

In general, the present invention is to provide an optical fiber connection storage tray and an optical fiber connection storage unit which both realize simplification and safety of connection work and greatly improve the usability of an optical fiber cable distribution board. it can.

[Brief description of the drawings]

FIG. 1 is a front view of an optical fiber connection storage tray and an optical fiber connection storage unit according to an embodiment of the present invention.

FIG. 2 is a plan view of the optical fiber connection housing unit according to the embodiment of the present invention when a top plate is removed.

FIG. 3 is a left side view of the optical fiber connection housing unit according to the embodiment of the present invention.

FIG. 4 is a right side view of the optical fiber connection housing unit according to the embodiment of the present invention;

FIG. 5 is an explanatory view of wiring connection of the optical fiber connection storage tray according to the embodiment of the present invention.

FIG. 6 is a partial configuration diagram of the optical fiber connection storage tray according to the embodiment of the present invention in which the second tray is pulled out.

FIG. 7 is a partial configuration diagram of the optical fiber connection storage tray of the embodiment of the present invention in which the second tray is rotated.

FIG. 8 is a schematic side view of the optical fiber connection storage tray according to the embodiment of the present invention in which the second tray is rotated.

FIG. 9 is an explanatory diagram illustrating a first tray lock unit according to the embodiment of the present invention;

FIG. 10 is an explanatory diagram illustrating an operation of the first tray lock unit according to the embodiment of the present invention;

FIG. 11 is an explanatory diagram illustrating a slide lock unit of the second tray lock unit according to the embodiment of the present invention.

FIG. 12 is an explanatory diagram illustrating a second tray lock unit according to the embodiment of the present invention.

FIG. 13 is an explanatory diagram illustrating a second tray lock unit according to the embodiment of the present invention.

FIG. 14 is an explanatory diagram illustrating a third tray lock unit according to the embodiment of the present invention;

FIG. 15 is an external view of a conventional optical fiber distribution board.

FIG. 16 is an inside view of a conventional optical fiber distribution board.

FIG. 17 is an enlarged external view of a conventional optical fiber connection storage tray and an optical fiber connection storage unit.

[Explanation of symbols]

 Reference Signs List 50 optical fiber connection storage unit 50a slide portion 50b L-shaped angle 50c L-shaped angle 50d clamp portion 50e slide portion 50f hat-shaped member 50g clamp portion 50h back plate 100 optical fiber connection storage tray 100a extra length storage portion 100b fusion sleeve holding portion 100c Connector 100d Clamping part 100e Processing auxiliary plate 100f Warning display part 100g First tray 100h Second tray 100i Hinge 100j Strip 100k Name display part 100l Notch part 100m Picking position indicating part 110 Optical fiber cable 110a Tape core wire 120 Optical fiber cord 130 Simple receptacle 140 Fusing sleeve 150 Internal plug 160 External plug 200 First tray lock part 200a Tray slide groove 200b Projecting cam part 20 c hole 200d projection 300 second tray locking portion 300a tray slide groove 300b sliding lock 300c passing groove 300d locking bar groove 300e spring portion 300f lock rod 300g stopper strip 400 third tray locking portion 400a fall preventing stopper

Claims (9)

[Utility model registration claims] An optical fiber connection receiving tray for wiring and storing an optical fiber cable and an optical fiber cord via a simple receptacle, comprising: a first tray, a tape core wire drawn out from the optical fiber cable, and a remainder of the simple receptacle. And a fusion sleeve that protects a fusion splicing portion in which the tip of the tape core wire and one end of the simple receptacle are fused to each other. A fusion sleeve holding portion disposed on the first tray, an internal plug attached to the other end of the simple receptacle, and an external plug attached to the tip of an external optical fiber cord from both inside and outside of the first tray. A connection terminal optically connected to the first tray and a cover rotatably provided with respect to the first tray and covering the connection terminal of the first tray when viewed from the front; A second tray having: a first tray and a second tray that are substantially parallel to each other in a normal state to cover and cover the connection portion with strips of the second tray, and that the second tray is rotated during connection work. An optical fiber connection storage tray, wherein connection terminals of the first tray are exposed. 2. The optical fiber connection storage tray according to claim 1, further comprising a name display portion provided on the second tray, and rotating the second tray to expose the name display portion together with the connection terminals, thereby transmitting information. An optical fiber connection accommodation tray characterized by displaying. 3. The optical fiber connection storage tray according to claim 1, wherein the optical fiber cord is attached to the first tray and the movement of the optical fiber cord is reduced when the second tray is rotated. A processing auxiliary plate for supporting the optical fiber cord, and a warning display unit attached to the processing auxiliary plate and warning that direct viewing of light output emitted from the connection terminal when the external plug is pulled out from the connection terminal is prohibited. An optical fiber connection storage tray, characterized in that: 4. The optical fiber connection receiving tray according to claim 1, wherein a front surface of the connection terminal is disposed so as to be inclined with respect to a direction in which the optical fiber connection receiving tray is inserted and removed. Optical fiber connection storage tray. 5. An optical fiber connection storage unit for storing the optical fiber connection storage tray according to any one of claims 1 to 4 in a multi-layered manner, and pulling out a desired optical fiber connection storage tray. An optical fiber connection / accommodation unit, wherein a connection terminal for performing a connection operation is exposed by rotating a second tray, and an external plug at an end of an optical fiber cord is externally attached to a front surface of the connection terminal. 6. The optical fiber connection storage unit according to claim 5, wherein a first tray lock portion for fixing the optical fiber connection storage tray at the tray storage position and a second tray of the optical fiber connection storage tray are rotated. A second tray lock portion for fixing the connection terminal at a connection terminal exposure position for exposing the connection terminal, and a third tray lock portion for preventing the optical fiber connection storage tray from being detached from the optical fiber connection storage unit. Optical fiber connection and accommodation unit. 7. The optical fiber connection and accommodation unit according to claim 6, wherein the first tray lock portion includes a slide portion having a tray slide groove for sliding the first tray and the second tray of the optical fiber connection and accommodation tray. A projecting cam portion provided on the near side with respect to the drawing direction of the tray slide groove of the slide portion; and a second portion of the optical fiber connection storage tray provided between the tray slide groove of the slide portion and the projecting cam portion. And a hole in which the projection provided on the tray fits. When locked by the first tray lock, the projection is fitted into the hole to restrain the movement of the optical fiber connection storage tray, and the first tray lock is provided. In order to release the lock, the second tray of the optical fiber connection storage tray is lifted upward, and the protrusion is drawn out from the hole and bypasses the protrusion above the protrusion cam portion. An optical fiber connection housing unit, wherein the optical fiber connection housing tray is drawn out by rotating the optical fiber connection housing tray. 8. The optical fiber connection storage unit according to claim 6, wherein the second tray lock portion has a tray slide groove for sliding the first tray and the second tray of the optical fiber connection storage tray. A slide lock portion having a crossing groove that crosses and restrains a stopper strip of the first tray; a spring portion for urging the slide lock portion to move in one direction; and a force against the urging force of the spring portion. And a lock rod for moving the slide lock portion by using the second tray lock portion. When locking is performed by the second tray lock portion, the spring portion biases the slide lock portion so that the transfer groove and the tray slide groove do not coincide with each other in the horizontal direction. To prevent the stopper strip of the first tray from passing, and to release the lock by the second tray lock, operate the lock rod to move the slide lock. An optical fiber connection / accommodation unit, wherein the optical fiber connection / accommodation tray is drawn out after the transfer groove and the tray slide groove coincide with each other in the horizontal direction. 9. The optical fiber connection and accommodation unit according to claim 6, wherein the third tray lock portion allows the first and second trays of the optical fiber connection and accommodation tray to pass therethrough. And a stopper for preventing the stopper strip provided on the second tray from colliding with the stopper strip. When the stopper is locked by the third tray lock portion, the stopper for preventing the stopper comes into contact with the stopper strip to accommodate the optical fiber connection. An optical fiber connection / accommodation unit, wherein a tray is prevented from being detached from a tray slide groove, and a lock for preventing falling off is removed and an optical fiber connection / accommodation tray is pulled out when unlocking by a third tray lock portion.