JP4159174B2 - Fusing tray - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fusion tray for storing a connecting portion of an optical fiber core wire.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a fusing sleeve portion in which an optical fiber core wire is fusion-connected or a holding portion that accommodates and holds a connection connector has been formed inside a fusion tray that accommodates the connection portion of the optical fiber core wire.
[0003]
[Problems to be solved by the invention]
However, the size and shape of the fusion sleeve portion or connection connector vary depending on the type of optical fiber core, the connection method, and the like. Therefore, normally, the size and shape of the storage portion are formed in accordance with the largest one so that all of the sleeve portion and the connector can be stored. As a result, when the largest sleeve or the like is stored, the sleeve or the like is securely held, but the small sleeve or the like is held in a loose state with a margin in the holding part. It can be moved within the department.
[0004]
In this way, once the sleeve portion that has been housed and held is movable within the holding portion, the bending radius of the extra length portion of the optical fiber core line connected to it may change, and when the bending radius is less than or equal to the allowable bending radius, A transmission error sometimes occurred. Therefore, the present invention provides a fusion tray that can securely store and hold the optical fiber core wire connecting portions even if the sizes and shapes of the connecting portions vary, thereby preventing transmission errors. That was the issue.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides :
A tray main body having a bottom plate and an outer wall, a plurality of holding portions defined by a plurality of partition walls arranged so as to be substantially perpendicular to the bottom plate of the tray main body, and outside the plurality of holding portions And an extra-length accommodating portion that accommodates the fiber core wire, and the holding portion alone holds any one of the connection connector, the first fusion sleeve, and the second fusion sleeve therein. A fusing tray that is configured to allow the holding portion to
The opposing inner wall surfaces of the two partition walls that form a single holding portion are the widest in the width direction at the longitudinal center portion of the two partition walls, and the width direction at both outer portions of the longitudinal center portion. And the bottom surface of the bottom plate between the two partition walls forming the holding portion is deepest at the center portion in the longitudinal direction of the two partition walls. A multi-stage groove is formed which is shallow at both ends of the longitudinal central portion and shallowest at both longitudinal ends.
It is characterized in that the connector is held at the longitudinal central portion, the first fusion sleeve is held at both outer portions of the longitudinal central portion, or the second fusion sleeve is held in contact with both longitudinal ends. To do.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external view of a fusing tray to which the present invention is applied. FIG. 1 (a) is a top view, FIG. (B) is a side view thereof, and FIG. 2 is a view of FIG. It is a side view.
In the figure, reference numeral 1 denotes a tray body, which is mainly composed of a bottom plate 2 and outer walls 3 and 4. Optical fiber core wires (not shown) are drawn into the inlets 5 and 6 formed on the upper left and right sides of FIG. The inside surrounded by the outer walls 3 and 4 is an extra length storage portion for the core wire, and the optical fiber core wire is stored.
[0007]
Tongue-shaped retaining pieces 7 to 14 project from the upper ends of the outer walls 3 and 4 to prevent the stored optical fiber core wires from coming out of the tray body 1. Similarly, the retaining pieces 15 and 16 project outward from the bottom plate 2 at the same level as the retaining pieces 7 to 14 to prevent the optical fiber core wires from coming out.
Hinge pieces 17 and 18 that serve as connecting portions when the tray main body 1 is stacked in a plurality of stages are provided at both ends of the outer wall 4 at the levels of the upper surface and the lower surface.
[0008]
The hinge pieces 17 and 18 become hinges when the upper and lower hinge pieces 17 and 18 are combined with each other in a state where the tray main body 1 is vertically stacked, and a pin (not shown) is inserted into the center portion thereof. The trays are connected to each other in a rotatable manner.
In addition, as shown in FIG. 1A, at the left and right lower ends of the tray body 1, three-point hinges 21 and 22 protrude from the upper and lower surfaces, respectively, and the tray body 1 is closed. When a pin (not shown) is inserted into the three-point hinges 21 and 22, the upper and lower hinges are connected.
[0009]
That is, the tray body 1 can be locked in the closed state by inserting a pin into the three-point hinges 21 and 22 in the closed state. Further, as shown in FIG. 1 (a), engaging projections 23 and 24 and engaging receivers 25 and 26 are provided in a vertically paired manner at both lower ends of the tray body 1. When the tray body 1 is stacked and opened and opened and closed, the upper and lower sides engage with each other in the closed state to act as a latch mechanism, and the closed state is maintained.
[0010]
Next, the sleeve holding portion, which is a feature of the present invention, will be described.
Three sleeve holding portions 31 and five sleeve holding portions 32 are formed at the upper portion of the center of the extra length storage portion formed by being surrounded by the outer walls 3 and 4. These holding portions are formed by projecting a partition wall 33 parallel to the bottom plate 2. As shown in the figure, the holding portions 31 and 32 are configured to accommodate three types of sizes of sleeves and connectors.
[0011]
3 to 6 are enlarged cross-sectional views in which the holding portions 31 and 32 are cut vertically in the longitudinal direction. As shown in FIG. 3, the upper surface of the bottom plate 2 is a level that is one level deeper than the original level 2a. It is composed of three levels, 2b and level 2c, which is one level deeper. Similarly, as shown in FIG. 1 (a), the interval between the partition walls 33 facing in the horizontal width direction is made wider at the center and narrower at the outer side, and further narrowed at both ends. By doing so, in FIG. 4, the shortest and thickest mechanical connector 35 is housed in the deepest level 2c portion of the central bottom plate 2.
[0012]
In FIG. 5, the tape sleeve 36 that is slightly thick and slightly short is housed in a portion that is at the deepest level 2 b next to the bottom plate 2 and that is wide in the width direction. In FIG. 6, the thinnest and longest single-core sleeve 37 is accommodated at the normal level 2a of the bottom plate 2 and inside the constricted portions at both ends in the longitudinal direction. The connectors 35 and the sleeves 36 and 37 are supported at their longitudinal ends by the steps of the bottom plate 2 and the gaps of the partition wall 33, thereby preventing the movement in the longitudinal direction and holding them in a stable state. Is done.
[0013]
Since the holding portion is configured in this manner, once the optical fiber core wire and the sleeve are normally stored in the tray, even if some force acts to move the optical fiber core wire. Movement is prevented at the sleeve or connector portion. As a result, transmission errors due to deformation of the optical fiber core wire to be less than or equal to the allowable bending radius due to movement of a part of the optical fiber core wire are prevented.
[0014]
In the example described above, the case where connectors and sleeves of three different sizes and shapes are used has been described. However, when connectors and sleeves of different shapes and sizes are used, the storage portion is matched to each shape and size. By providing the steps, it becomes possible to store them in a stable state.
[0015]
【The invention's effect】
As described above, according to the present invention, a step is formed for each size in the longitudinal direction on the bottom surface of the holding portion of the fusion sleeve or connection connector, and the fusion sleeve or connection connector is formed on the step portion according to the size. The movement in the longitudinal direction is prevented by fitting and holding. As a result, the optical fiber core wire is not accidentally bent below the allowable bending radius, and transmission errors are prevented from occurring.
[Brief description of the drawings]
FIG. 1 is an external view of an embodiment according to the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is an enlarged cross-sectional view of the main part of FIG.
FIG. 4 is an enlarged cross-sectional view of a main part of FIG.
FIG. 5 is an enlarged cross-sectional view of the main part of FIG.
6 is an enlarged cross-sectional view of the main part of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tray body 2 Bottom plate 2a, 2b, 2c Level 3, 4 Outer wall 5, 6 Introduction port 7-16 Stopping piece 17,18 Hinge piece 21,22 Three-point hinge 23,24 Engagement protrusion 25,26 Engagement receiver 31, 32 Sleeve holding portion 33 Partition wall 35 Mechanical connector 36 Tape sleeve 37 Single core sleeve

Claims (1)

A tray main body having a bottom plate and an outer wall, a plurality of holding portions defined by a plurality of partition walls arranged so as to be substantially perpendicular to the bottom plate of the tray main body, and outside the plurality of holding portions And an extra-length accommodating portion that accommodates the fiber core wire, and the holding portion alone holds any one of the connection connector, the first fusion sleeve, and the second fusion sleeve therein. A fusing tray that is configured to allow the holding portion to
The opposing inner wall surfaces of the two partition walls that form a single holding portion are the widest in the width direction at the longitudinal center portion of the two partition walls, and the width direction at both outer portions of the longitudinal center portion. And the bottom surface of the bottom plate between the two partition walls forming the holding portion is deepest at the center portion in the longitudinal direction of the two partition walls. A multi-stage groove is formed which is shallow at both ends of the longitudinal central portion and shallowest at both longitudinal ends.
It is characterized in that the connector is held at the longitudinal central portion, the first fusion sleeve is held at both outer portions of the longitudinal central portion, or the second fusion sleeve is held in contact with both longitudinal ends. Fusing tray to do.

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