JP5800231B2 - Tray with anti-pinch function - Google Patents

Description

  The present invention relates to a tray with a pinching prevention function that accommodates an optical fiber and uses a plurality of the optical fibers in a stacked manner.

  A plurality of trays are built in the closure, and each tray accommodates a connecting portion to which an optical fiber is connected (fused) and a coupler is attached. In the optical fiber connection work, after the work target tray is opened and the work is performed, the tray is closed with the optical fiber held in the tray. At this time, the extra length of the optical fiber is also accommodated in the tray. However, when the number of optical fiber cores accommodated in the tray is large or when the extra length is long, the optical fiber cores cannot be accommodated in the tray and are easily protruded. If the protruding optical fiber is pressed between the trays when the tray is closed, the communication provided by the optical fiber may be poor. For this reason, at the time of optical fiber connection work, a high degree of caution is required so that the optical fiber is not sandwiched between the trays, and there is a problem that workability is reduced.

  Then, the technique regarding the cable closure which attached the core wire pinching prevention sheet | seat is known (refer patent document 1). This cable closure consists of a lid that closes the inside of the closure body, and in the cable closure that has a connecting rod with a gap inside the alignment edge of the closure body, insert a sheet to prevent the cord from being caught in the gap and connect This prevents the core wire from being caught in the joint between the closure body and the lid.

Utility Model Registration No. 3100305

  However, in the technique described in Patent Document 1, it is necessary to insert one side edge of the core wire pinching prevention sheet into one gap and the other side edge into the other gap. When wearing gloves, there is a risk that work may take time or workability may be impaired. Further, since such optical fiber connection work is often performed at an unstable high place on the scaffold, it has been desired to prevent the optical fiber from being caught without impairing workability.

  Therefore, an object of the present invention is to provide a tray with an anti-pinch function that prevents the optical fiber from being caught without impairing workability.

  In order to achieve the above object, the invention described in claim 1 is a tray with an anti-pinch function that accommodates optical core wires and uses a plurality of stacked optical fibers, and along the outer periphery of the bottom surface portion formed in a flat plate shape. The tray main body is formed with a standing outer edge part, and the upper surface part is open. The tray main body is detachable from the outer edge part of the tray main body, and in a state attached to the outer edge part, the tray protrudes upward from the outer edge part. In a state where another tray main body is overlaid on the upper side of the main body, a space that abuts the lower end of the other tray main body and allows the optical fiber to protrude outwardly between the tray main body and the other tray main body. A tray with a pinching prevention function, characterized in that the tray has a pinching prevention means.

  According to the present invention, the space portion in which the optical fiber can protrude outward is formed between the tray body and the other tray body by the pinching prevention means.

  According to a second aspect of the present invention, in the tray with a pinching prevention function according to the first aspect, the pinching prevention means adjusts the position substantially perpendicular to the bottom surface along the inner peripheral surface of the outer edge. It is characterized by being free.

  According to a third aspect of the present invention, in the tray with a pinching prevention function according to the first aspect, the space is formed to have a height substantially equal to the diameter of the optical core.

  According to a fourth aspect of the present invention, in the tray with a pinching prevention function according to any one of the first to third aspects, a plurality of the pinching prevention means are arranged on the outer edge portion. To do.

  According to the first aspect of the present invention, since the space where the optical fiber can protrude outward is formed between the tray body and the other tray body, the optical fiber is outside the tray body. Even if it sticks out, it can be prevented from being pinched between the tray bodies. That is, since it is not pinched and pressed between tray bodies, the possibility of communication failure such as line disconnection due to line damage can be reduced. Further, since the pinching prevention means protrudes upward from the outer edge portion of the tray main body, it also functions as a stopper that contacts and holds the optical fiber that is likely to protrude from the tray main body. For this reason, since the optical fiber that protrudes outward from the tray main body can be minimized, it is possible to improve the stability of the connecting portion of the optical fiber.

  According to the second aspect of the present invention, since the pinching prevention means can be adjusted in position substantially perpendicular to the bottom surface portion, the size of the space portion is changed according to the number of optical cores accommodated. Thus, it is possible to increase or decrease the number of optical core wires that allow protrusion.

  According to the invention described in claim 3, since the space portion is formed at a slight height substantially equal to the diameter of the optical fiber, the optical fiber that protrudes outward from the tray body is minimized. Is possible. That is, the number of optical cores accommodated in the tray body increases, and a more stable communication state can be maintained.

  According to the fourth aspect of the present invention, since a plurality of the pinching prevention means are disposed on the outer edge portion, the optical core can be more effectively disposed by arranging the optical fiber in a position where the optical fiber is likely to protrude outward. The protrusion of the line can be prevented.

It is a top view of a tray with a pinch prevention function concerning an embodiment of this invention. It is a side view which shows the clamping prevention means of the tray with a clamping prevention function of FIG. It is a side view which shows the state which the pinching prevention means of FIG. 2 contact | abutted with the lower end part of the other tray. It is a front view which shows the state which accumulated the tray with a pinching prevention function of FIG.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 4 show an embodiment of the present invention. The tray 1 with the pinching prevention function accommodates the optical fiber 200 and uses a plurality of layers. The tray main body 2 and the pinching disposed in the tray main body 2 are mainly used as shown in FIG. It has a pinching prevention part 3 and a winding guide part 4 as prevention means.

  As shown in FIG. 1, the tray body 2 is accommodated in a plurality of stages in a closure (not shown). The tray main body 2 accommodates the optical fiber 200, and is formed in a tray shape having an open upper surface portion. In this embodiment, the front wall portion 2a, the rear wall portion 2b, the right wall portion 2c, The left side wall portion 2d and the bottom wall portion 2e are formed so that the planar shape is a horizontally long rectangular shape. Plate-shaped cable stoppers 21 to 26 are disposed substantially in parallel with the bottom wall 2e at both ends of the front wall 2a and the rear wall 2b and at the center of the right wall 2c and the left wall 2d. The optical fiber 200 accommodated in the tray body 2 is prevented from protruding outward. That is, since the cable stoppers 21 to 26 are disposed at substantially the same height as the wall portions 2a to 2d, the optical fiber 200 is held so as not to protrude above the wall portions 2a to 2d. Here, the front wall portion 2a, the rear wall portion 2b, the right wall portion 2c, and the left wall portion 2d are collectively referred to as the outer edge portion 20.

  As shown in FIG. 2, the pinching prevention unit 3 can be attached to and detached from the outer edge portion 20 of the tray body 2, and mainly includes a sandwiching portion 31 and a slide portion 32. The sandwiching portion 31 is made of an elastically deformable material and can sandwich the outer edge portion 20, that is, the front wall portion 2a, the rear wall portion 2b, the right side wall portion 2c, and the left side wall portion 2d. . That is, the holding part 31 has the hollow part 31a set to a width slightly smaller than the thickness of the outer edge part 20, and can be held by inserting the upper end side of the outer edge part 20 into the hollow part 31a. .

  As shown in FIGS. 2 and 3, the slide portion 32 is slidably disposed along the inner peripheral surface of the outer edge portion 20 of the tray body 2, that is, along the holding portion 31. It has a stopper (not shown) that can be locked in position. Then, in a state where the holding portion 31 is attached to the outer edge portion 20, that is, in a state where the outer edge portion 20 is held, the tip end portion of the slide portion 32 protrudes above the upper end of the outer edge portion 20 by d 1 + d 2. ing. Here, d1 is a distance from the upper end of the outer edge portion 20 to the tip of the holding portion 31 is about 0.5 mm, and d2 is a distance from the tip of the holding portion 31 to the tip of the slide portion 32. It is 0.4 mm. The height of the space portion S is d1 + d2 = about 0.9 mm, which is formed approximately equal to the diameter of the optical core 200. The height of the space S is a height that does not hinder the opening and closing of the closure, the rotation and opening and closing of the tray body 2. In addition, for example, by sliding the slide portion 32 and setting the distance from the distal end portion of the holding portion 31 to the distal end portion of the slide portion 32 as d3, the height of the formed space portion S can be changed. ing.

  As shown in FIGS. 3 and 4, the pinching prevention unit 3 protrudes upward from the outer edge 20 when attached to the outer edge 20. That is, in a state where another tray body 2B is stacked on the upper side of the tray body 2A, the tray body 2B comes into contact with the lower end (bottom wall) 2Be of the other tray body 2B, and the tray body 2A and the other tray body 2B are in contact with each other. A space S in which the optical fiber 200 can protrude outward is formed therebetween. Further, since the slide portion 32 opens discontinuously between the tray main body 2A and the other tray main body 2B along the outer edge portion 20 of the tray main body 2A, the optical fiber 200 is provided with the slide portion 32. It is designed to protrude outwards from the parts that are not. That is, the pinching prevention unit 3 has a function of forming a space S through which the optical fiber 200 can protrude outward and minimizing the optical fiber protruding outward by the slide unit 32. .

  As shown in FIG. 1, the winding guide portion 4 is formed in a substantially elliptic cylindrical shape having a height equivalent to that of the tray body 2, and can take up and hold the optical fiber 200 along the outer periphery. ing. In other words, the take-up guide unit 4 accommodates the optical fiber 200 accommodated in the tray body 2 so as to be wound in a state where the optical fiber 200 is curved on both ends of the tray body 2. The winding guide portion 4 can be fixed to the bottom wall portion 2e with an adhesive and is disposed at both ends of the bottom wall portion 2e.

  Here, as shown in FIG. 1, the extra length of the optical fiber 200 is accommodated in a curved state at both end portions of the tray body 2. Further, since couplers (not shown) are also accommodated at both ends of the tray body 2, the space on both ends is narrow, and the optical fiber 200 is easily pushed outward. And the cable stoppers 21-26 have the function to hold | maintain the optical fiber 200 which has such extra length so that it may remain inside the tray main body 2. FIG. Furthermore, the slide part 32 has a function of preventing the protrusion by pushing back inward by contacting the optical fiber 200 that is about to protrude outward from the tray body 2. Nevertheless, only the extra length portion that protrudes outward is allowed to protrude outward from the space portion S.

  Next, a pinching prevention method and an action by the tray 1 with a pinching prevention function at the time of connecting the optical fiber 200 will be described.

  First, the closure (not shown) is opened, the hinge that allows the tray main body 2A and the other tray main body 2B to rotate freely is rotated, and the tray main body 2A to be connected to the optical line 200 is opened. The Then, the optical line 200 is connected or changed in the tray body 2A. At this time, the extra length of the optical line 200 is curved at both ends along the winding guide portion 4 of the tray main body 2A, and is further held by the cable stoppers 21 to 26 so as not to protrude outward.

  And the slide part 32 of the six pinching prevention parts 3 attached to the outer edge part 20 of the tray body 2A is slid, and is fixed at a position where the distance from the tip part of the holding part 31 is d2.

  Then, the hinge is rotated to close the tray body 2A and the other tray body 2B. Then, a space S is formed between the tray main body 2A and the other tray main body 2B by bringing the front end of the slide portion 32 into contact with the bottom wall 2e of the other tray main body 2B. This space portion S is formed between the adjacent slide portions 32.

  In this way, the optical fiber 200 is held by the cable stoppers 21 to 26 and the slide portion 32 of the tray 1 with the pinching prevention function so as to remain inside the tray main body 2A. And the further extra length part of the optical fiber 200 protrudes outward from the space part S formed between the tray main body 2A and the other tray main body 2B. At this time, since the space portion S is set to have a height equivalent to the diameter of the optical core 200, the optical core 200 protruding outward from the space S is limited to the minimum.

  Since the closure is closed at the end, the optical fiber 200 protruding outward from the space S is also accommodated in the closure, so that the optical fiber 200 is installed in a state protected by the closure.

  Thus, according to the tray 1 with the pinching prevention function, the space portion S in which the optical fiber 200 can protrude outward is formed between the tray body 2A and the other tray body 2B. Even when the wire 200 protrudes outward from the tray body 2A, it is prevented from being sandwiched between the tray body 2A and another tray body 2B. That is, since it is not pinched and pressed between the tray main body 2A and the other tray main body 2B, the possibility of communication failure such as line disconnection due to line damage can be reduced. Further, since the pinching prevention part 3 projects upward from the outer edge part 20 of the tray main body 2A, it also functions as a stopper that holds the optical fiber 200 that is likely to protrude outside the tray main body 2A in the tray main body 2A. That is, the extra length of the optical fiber 200 is pushed back to the inside of the tray main body 2 </ b> A by coming into contact with the slide portion 32. For this reason, since the optical fiber 200 protruding outside the tray body 2A can be minimized, the stability of the connecting portion of the optical fiber 200 can be enhanced.

  Further, since the pinch prevention part 3 can be adjusted in position by sliding substantially perpendicular to the bottom wall part 2e, the size of the space part S can be changed according to the number of optical cores accommodated. It is possible to increase or decrease the number of optical cores 200 that allow the protrusion.

  Further, since the pinching prevention unit 3 is fixed by holding the outer edge portion 20 of the tray body 2A, it can be stably fixed regardless of the installation direction (vertical installation, horizontal installation) of the closure. Further, the pinching prevention unit 3 can be attached not only when the closure or the tray body 2 is newly installed but also without modifying the existing tray body 2. In addition, no special tool is required at the time of attachment, and the attachment is easy.

  Further, since the space portion S is formed at a slight height substantially equal to the diameter of the optical core 200, the optical core 200 protruding to the outside of the tray body 2 can be minimized. That is, the more stable optical communication can be maintained by increasing the number of optical cores 200 accommodated in the tray body 2.

  Further, since a plurality of the pinching prevention parts 3 are arranged at the outer edge part 20 of the tray main body 2, the optical fiber 200 can be easily exposed to the outside, for example, at both ends of the tray main body 2. Thus, it is possible to more effectively prevent the optical fiber 200 from protruding.

  Furthermore, after attaching the pinch prevention part 3 to the tray body 2, it is not necessary to pay special attention when connecting the optical fiber 200, and the work procedure does not need to be changed. However, it is possible to prevent the optical fiber 200 from being caught without impairing workability. That is, the operator can prevent the optical fiber 200 from being caught only by closing the tray body 2A and the other tray body 2B after performing the connection work of the optical fiber 200 as usual.

  The embodiment of the present invention has been described in detail above, but the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like without departing from the gist of the present invention, It is included in this invention. For example, the number of attachment prevention parts 3 is not limited to six, and may be four, such as four as long as the number of optical cores 200 protruding outward from the tray body 2 can be minimized. Good.

  Further, the optical fiber 200 may be held inside the tray body 2 by making the slide part 32 of the pinching prevention part 3 have a curved shape with the upper end side facing downward.

1 Tray with pinching prevention function 2 Tray body 2e Bottom wall (lower end)
20 Outer edge part 3 Pinch prevention part (Pinch prevention means)
31 Nipping part 32 Slide part S Space part 200 Optical fiber

Claims (4)

A tray with an anti-pinch function that accommodates optical cores and uses a plurality of layers,
A tray body in which an outer edge portion erected along the outer periphery of the bottom surface portion formed in a flat plate shape is formed, and the upper surface portion is opened,
In the state where it can be attached to and detached from the outer edge portion of the tray body and attached to the outer edge portion, it projects upward from the outer edge portion, and in the state where another tray body is stacked on the upper side of the tray body, A pinching prevention means that is in contact with the lower end portion and in which a space portion is formed between the tray main body and another tray main body so that the optical fiber can protrude outward;
A tray with an anti-pinch function.   The tray with a pinching prevention function according to claim 1, wherein the pinching prevention means can be adjusted in position substantially perpendicular to the bottom surface along the inner peripheral surface of the outer edge.   The tray with a pinching prevention function according to claim 1, wherein the space portion is formed at a height substantially equal to a diameter of the optical core.   The tray with a pinching prevention function according to any one of claims 1 to 3, wherein a plurality of the pinching prevention means are disposed on the outer edge portion.

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