JP6587447B2 - Extra length processing member for optical fiber - Google Patents

Description

  The present invention relates to a structure of a surplus length processing member for processing a surplus length of an optical fiber. The present invention also relates to a split-type optical fiber reel formed by connecting a plurality of extra length processing members.

  2. Description of the Related Art Conventionally, an optical fiber reel for winding an optical fiber to a specified radius or more and processing the extra length is known. For example, Patent Document 1 discloses a split-type surplus length processing structure in which guide members that can be used alone for surplus length processing of an optical fiber are connected to form a circle-shaped reel.

  This type of optical fiber reel is usually mounted on a flat base plate in an optical junction box. For example, in the optical fiber reel described in Patent Document 1, an embossed portion that is elastically deformed is formed on the bottom plate portion of each guide member (corresponding to the extra length processing member of the present invention), and is processed on the surface of the base plate. By fitting the fitting portion into the guide member, the guide member is detachably fixed to the base.

Japanese Patent No. 3970165

  By the way, in the optical fiber reel of patent document 1, the fitting part is formed in the bottom of the guide space (space pinched | interposed by the inner wall part and the outer wall part) where an optical fiber is wound. That is, the fitting portion presses the guide space, and it is difficult to secure a wide space for storing the optical fiber due to the structure. Further, when removing the reel body connecting a plurality of guide members from the base plate or separating the stacked reels, the outer wall or the like becomes an obstacle, and it is difficult to unlock the fitting portion.

  Therefore, an object of the present invention is to provide an extra length processing member for an optical fiber that can secure a wide space for storing the optical fiber.

In order to solve the above-mentioned problems, the present invention provides a redundant guide for an optical fiber including an arcuate guide surface for winding an optical fiber, and a top plate portion and a bottom plate portion that are connected to each other above and below the guide surface and are parallel to each other. It is a long processing member, and is provided with a latching portion that can be latched with another member in a relief portion that is recessed with respect to the surface of the bottom plate portion of the bottom plate portion on the inner peripheral side with respect to the guide surface. An extra length processing member for an optical fiber, which is a feature.

  According to the surplus length processing member of this configuration, since the locking portion that can be locked with the other member is provided on the inner peripheral side from the guide surface, the locking portion does not compress the space for storing the optical fiber, The space can be secured widely.

Moreover, since the said latching | locking part is provided in the escape part recessed with respect to the surface of the said baseplate part, other members (for example , other extra length process members and baseplates included) are latched. The portion can be accommodated in the escape portion, and interference with other members can be prevented.

Moreover, extra length handling member, it is preferable that the lower surface of the lower surface and the bottom plate portion of the locking portion is formed on the surface of the same level.

  Accordingly, for example, the locked portion (embossed portion) protruding from the mounting surface of the other plate-shaped member is accommodated in the escape portion to prevent the lifting, and the locked portion is locked on the back surface of the base plate. It can be set as the structure which does not protrude from (for example, an embossed part). Therefore, it becomes possible to attach the surplus length processing member directly to other flat members (including the base plate and other surplus length processing members).

  Moreover, it is preferable that a surplus length processing member is provided with the connection part which can be connected with another surplus length processing member in the inner peripheral side rather than the said guide surface.

  According to the surplus length processing member of this configuration, since the connecting portion connectable with the other surplus length processing member is provided on the inner peripheral side from the guide surface, the connecting portion does not compress the space for storing the optical fiber, The space can be secured widely.

  Moreover, it is preferable that a surplus length process member is provided with the projection part which can be inserted in another member in the axial side of the said fan-shaped bottom-plate part. Thereby, the positioning at the time of installing the surplus length process member in another member can be made easy.

  Moreover, this invention is an optical fiber reel formed by connecting a plurality of extra length processing members having the above-described configuration.

  According to the optical fiber reel of this configuration, a wide space for storing the optical fiber can be secured.

  According to the surplus length processing member for an optical fiber according to the present invention, a wide space for storing the optical fiber can be secured. Moreover, attachment / detachment to other members and operation of stacking can be facilitated.

It is the perspective view which looked at the surplus length process member by one Embodiment of this invention from the outer peripheral side upper direction. It is the perspective view which looked at the surplus length process member of FIG. 1 from the axial upper side. It is the perspective view which looked at the surplus length processing member of FIG. 1 from the outer peripheral side lower side. It is the perspective view which looked at the surplus length process member of FIG. 1 from the circumferential direction lower side. FIG. 2 is a perspective view of an optical fiber reel formed by connecting a plurality of extra length processing members in FIG. 1. (A) is the perspective view which looked at the optical fiber reel mounted in the base plate of FIG. 5 from the upper direction. (B) is the perspective view which looked at the optical fiber reel mounted in the baseplate from the downward direction. It is the perspective view which looked at the excess length processing member stacked up from the lower part. It is a perspective view which expands and shows the latching | locking part of the surplus length process member of FIG. It is the perspective view which looked at the surplus length processing member in a stacking position in a lock position from the lower part. It is a perspective view which expands and shows the latching | locking part of the surplus length process member of FIG. It is the perspective view which looked at the stacked optical fiber reel from the downward direction.

  Hereinafter, the structure of the extra length processing member for an optical fiber according to the present invention will be described in detail with reference to the drawings. In the present specification, “optical fiber” means a general light beam material that transmits an optical signal such as an optical fiber, an optical cable, an optical cord, and the like. Moreover, the surplus length processing member according to the present invention is not limited to one used in the form of an optical fiber reel connected in a circle. For example, it may be used for wiring other than the surplus length processing in which a surplus length processing member, which is a single unit or a plurality of units, is fixed to the base plate and the wiring direction of the optical fiber is changed by an arcuate guide surface. In addition to the optical fiber, another cable such as a LAN cable may be wound.

(Description of main parts)
FIG. 1 is a perspective view of a surplus length processing member 10 according to an embodiment of the present invention as viewed from above the outer peripheral side. FIG. 2 is a perspective view of the surplus length processing member 10 as viewed from above the shaft side. The surplus length processing member 10 of the present embodiment has a generally quadrant (¼ circle) fan shape in plan view. Then, by connecting four extra length processing members 10 in the circumferential direction, one circle-shaped optical fiber reel 1 can be formed (see FIG. 5). Here, in the single extra length processing member 10, the “axis” means a central axis when the circle-shaped optical fiber reel 1 is formed, that is, a straight line passing through the position of the main part of the fan. In the surplus length processing member 10, “center axis side” means the inner peripheral side in the radial direction toward this axis. Further, “outside” means the outer peripheral side in the radial direction from the axis unless otherwise specified. In this specification, “up and down” does not mean an absolute meaning but merely means a relative positional relationship.

The surplus length processing member 10 includes an arcuate guide surface 101a for winding and guiding an optical fiber. Further, a top plate portion 110 and a bottom plate portion 120, which are substantially fan-shaped plate portions, are connected in parallel to each other above and below the arcuate body portion 101 having a guide surface 101a on the outer surface. The radial width dimensions of the top plate portion 110 and the bottom plate portion 120 are substantially the same.
That is, a space outside the guide surface 101a and sandwiched between the top plate portion 110 and the bottom plate portion 120 is a storage space (guide space) for winding and storing the optical fiber.

(Description of optical fiber guide)
As shown in FIG. 1, upper guide portions 111, 111 that protrude downward are formed on the outer peripheral portion of the top plate portion 110 at both ends in the circumferential direction. In addition, a lower guide portion 121 is formed to protrude upward at an outer peripheral portion of the bottom plate portion 120 and in a central portion in the circumferential direction. The upper guide portion 111 and the lower guide portion 121 have a function of holding the optical fiber wound around the guide surface 101a so as not to protrude from the guide space. Although details will be described later, the lower guide portion 121 also serves as an operation portion of the lock release lever 132 provided on the outer peripheral portion of the bottom plate portion 120. Here, the “outer peripheral portion” where the lock release lever 132 is arranged refers to a portion that is operable at the outer peripheral end of the bottom plate portion 120 or in the vicinity of the outer peripheral end from the outside.

  The extra length processing member 10 of the present embodiment is configured so that the upper guide portion 111 and the lower guide portion 121 that define the outer side of the guide space that stores the optical fiber are not circumferentially opposed to each other so that the top plate portion 110 and the bottom plate portion 120 are opposed to each other. Are alternately provided at different positions.

  Thus, by providing the upper guide portion 111 and the lower guide portion 121 alternately at different positions in the circumferential direction, the gap for inserting and removing the optical fiber is increased compared to the conventional structure in which they are opposed to each other. It can be secured more widely. Therefore, it is possible to facilitate the operation of winding or removing the optical fiber around the extra length processing member 10.

(Description of connecting part)
In the surplus length processing member 10, as shown in FIG. 2, the first connecting portion 102 and the second connecting portion 103 for connecting to the other surplus length processing member 10 are formed at both ends of the arc-shaped body portion 101. Has been.

  The first connecting portion 102 includes an L-shaped engaged portion 102 a that is an L-shaped groove that is long in the vertical direction at one end portion (left end portion in FIG. 2) of the arc-shaped body portion 101. On the other hand, the second connecting portion 103 includes an L-shaped engagement portion 103a that protrudes from the other end portion (the right end portion in FIG. 2) of the arc-shaped body portion 101 and extends in the vertical direction with an L-shaped cross section. Yes. By inserting and sliding the L-shaped engaging portion 103a of one surplus length processing member 10 into the L-shaped engaged portion 102a of the other surplus length processing member 10, both surplus length processing members 10 are inserted. Can be linked.

  That is, the first connecting part 102 and the second connecting part 103 constitute a connecting means for connecting the two extra length processing members 10.

  Like this embodiment, the connection means which consists of the 1st connection part 102 and the 2nd connection part 103 is provided in the inner peripheral side (center axis side) rather than the guide surface 101a of the circular-arc-shaped trunk | drum 101. FIG. It is preferable. By so doing, when the surplus length processing member 10 is used alone, for example, the risk of inadvertent damage such as hooking of an optical fiber wound around the guide surface 101a can be reduced.

  Further, at the end of the bottom plate portion 120 of the extra length processing member 10, a slide restricting hole portion 122 which is a vertical tongue-like portion is formed at a position slightly separated from the first connecting portion 102 toward the central axis side. Has been. The sliding restriction hole 122 includes a restriction hole 123 that is a U-shaped slit hole, and a restriction groove 124 that is recessed in the upper end of the plate-like part on the central axis side of the restriction hole 123.

  The sliding restriction hole portion 122 is a thin plate portion that is provided independently and spaced apart from the first connecting portion 102 toward the center axis side, and can be elastically deformed so that it slightly falls in the circumferential direction starting from the bottom plate portion 120. is there.

  On the other hand, at the other end portion of the bottom plate portion 120, a sliding restricting projection portion 125, which is also a vertical tongue-like portion, is formed at a position slightly separated from the second connecting portion 103 toward the central axis side. . The slide restricting protrusion 125 includes a first protrusion 126 and a second protrusion 127 that are arranged in the radial direction at substantially the same height from the bottom plate portion 120.

  The slide restricting protrusion 125 is a thin plate portion that is provided independently from the second connecting portion 103 (L-shaped engaging portion 103a) so as to be spaced apart from the center axis, and is similar to the slide restricting hole 122. It is elastically deformable so that it slightly falls in the circumferential direction.

  At a predetermined connecting position where the two surplus length processing members 10 are connected by the first connecting portion 102 and the second connecting portion 103, the sliding restriction projection 125 of one surplus length processing member 10 is the other surplus length. The sliding position is fixed by engaging with the sliding restriction hole 122 of the processing member 10. That is, at the specified coupling position, the first protrusion 126 of one surplus length processing member 10 fits into the restriction hole 123 of the other surplus length processing member 10 and comes into contact with the upper end of the hole. The two protrusions 127 come into contact with the lower end of the other restriction groove 124. Thereby, sliding of the 1st connection part 102 and the 2nd connection part 103 is controlled, and the connection state of the two extra length process members 10 is locked.

  As described above, the sliding restricting hole portion 122 and the sliding restricting projection portion 125 constitute a connection lock means for locking the connection state of the two extra length processing members 10.

  As described above, the sliding restriction hole 122 and the sliding restriction projection 125 can be elastically deformed so as to fall down in the circumferential direction, so that, for example, the extra length processing member 10 on the side including the sliding restriction projection 125 is provided. The connection lock state of both extra length processing members 10 can be easily released by lifting by applying a slight external force.

  As shown in FIG. 2, the tip of the first protrusion 126 of the sliding restricting protrusion 125 has a downwardly tapered surface whose lower part is cut off obliquely. On the other hand, the tip of the second protrusion 127 of the sliding restricting protrusion 125 has an upward taper surface whose upper part is cut off obliquely. Thereby, it is possible to connect the extra length processing members 10 by sliding them from above and sliding them downward, or by connecting them from below and sliding them upward.

  That is, when the surplus length processing member 10 on the side provided with the sliding restricting projection 125 is inserted and connected from above, the downward taper surface of the first protruding portion 126 abuts on the upper end of the sliding restricting hole 122, and the sliding The movement restricting protrusion 125 and the slide restricting hole 122 fall in a direction away from each other, and the first protrusion 126 fits into the restricting hole 123.

  Conversely, when the extra length processing member 10 on the side provided with the sliding restricting projection 125 is inserted and connected from below, the upward taper surface of the second projecting portion 127 is initially at the lower end of the sliding restricting hole 122. Abut. Then, after the second projecting portion 127 falls on the inner side in the circumferential direction and slides on the wall surface of the sliding restricting hole portion 122, the second projecting portion 127 is locked to the restricting groove 124 at a predetermined connecting position.

  Therefore, even when the two extra length processing members 10 are inserted and connected from either the upper or lower direction, they can be easily locked at the specified connecting position by applying a slight force.

  In addition, the slide restricting hole 122 and the slide restricting protrusion 125 constituting the connection lock means of the present embodiment are provided separately from the first connecting portion 102 and the second connecting portion 103, respectively. Yes. Therefore, in the operation of connecting and releasing the extra length processing member 10, extra stress, distortion, deformation, etc. are not generated on the extra length processing member 10 and the entire structure of the optical fiber reel 1 after the connection. There is no mechanical adverse effect.

(Explanation of stacked parts)
Next, the upper surface side structure of the extra length processing member 10 will be described. In FIG. 1 and FIG. 2, the upper surface of the top plate portion 110 of one surplus length processing member 10 is a stacked portion for stacking the other surplus length processing members 10.

  That is, the lower locking portion 131 (see FIGS. 3 and 4) of the other excess length processing member 10 to be stacked is locked closer to the central axis than the position corresponding to the guide surface 101a of the top plate portion 110. A possible locked portion 112 is formed. The locked portion 112 includes a through hole 112a having a hole diameter enough to allow insertion of a lower locking portion 131, which will be described later, and a lock for locking the lower locking portion 131 at a position slightly displaced in the circumferential direction from the through hole 112a. And a stop pocket 112b.

  In addition, the top plate portion 110 is formed with two lock holes 113, 113 arranged in parallel on the radial extension of the locking pocket 112b. The lock holes 113 and 113 can be engaged with two lock protrusions 133 and 133 (see FIGS. 3 and 4) that serve as lock means under the other excess length processing member 10 to be stacked.

  In addition to these, a positioning guide 114 that is an arc-shaped rib is formed so as to surround the axis of the top plate portion 110. In addition, the top plate portion 110 is formed with a rectangular through window 115 that penetrates the space in which the optical fiber is accommodated.

(Explanation of mount lock)
Next, the lower surface side structure of the extra length processing member 10 will be described. Here, FIG. 3 is a perspective view of the surplus length processing member 10 viewed from the lower side on the outer peripheral side. FIG. 4 is a perspective view of the surplus length processing member 10 viewed from the lower side in the circumferential direction.

  As shown in these drawings, the lower surface of the bottom plate portion 120 of the surplus length processing member 10 is a mount lock portion when mounted on a base plate BP such as an optical connection box (not shown). The mount lock portion includes lock protrusions 133 and 133 and a lower locking portion 131. The lower locking portion 131, the lock protrusions 133 and 133, and the lock release lever 132, which is an operation portion for releasing these locked states, are on a straight line extending in the radial direction at the circumferential center position of the fan-shaped bottom plate portion 120. Has been placed.

On the lower surface of the bottom plate portion 120, the lower portion of the arc-shaped body portion 101, that is, the inner peripheral side from the position of the guide surface 101 a has a certain width and is recessed with respect to the lower surface of the bottom plate portion 120, and is curved in an arc shape. An escape portion 134 is formed. And the lower latching | locking part 131 is provided with the hook-shaped part 131a which has a U-shaped lower surface, and the handle | pattern part 131b extended upwards from the hook-shaped part 131a. The lower locking portion 131 is formed at substantially the center of the escape portion 134 that is recessed with respect to the lower surface of the bottom plate portion 120 so that the hook-shaped portion 131 a does not protrude from the lower surface of the bottom plate portion 120.
In the present embodiment, since the lower locking portion 131 is formed in the escape portion 134, the lower surface of the hook-shaped portion 131a and the lower surface of the bottom plate portion 120 are on the same level surface. However, the lower surface of the bowl-shaped portion 131a may not protrude from the lower surface of the bottom plate portion 120. Thereby, interference with other devices can be prevented.

  The lock release lever 132 is formed as a cantilever (cantilever) having a lower end of the arc-shaped body 101 as a base end and extending outward along the radial direction of the fan-shaped bottom plate 120. That is, the lock release lever 132 is formed on the outer peripheral side of the position of the guide surface 101a around which the optical fiber is wound and at a position facing the optical fiber storage space.

  On the lower surface of the lock release lever 132, two lock protrusions 133 and 133 projecting downward are juxtaposed in the radial direction. A positioning hole 135 is formed between the two lock protrusions 133 and 133 of the lock release lever 132.

  As shown in FIG. 1, the distal end portion of the lock release lever 132 is a lower guide portion 121 that holds an optical fiber, and an operation portion for releasing the mount lock state of the extra length processing member 10. Also serves as.

  On the shaft side of the bottom surface of the bottom plate portion 120, a semi-cylindrical shaft positioning protrusion 136 that protrudes downward from the bottom surface is formed. An elongated hole 137 that can be used as a screw hole is formed adjacent to the shaft positioning protrusion 136.

(Description of mounting method on the base plate)
FIG. 6 shows a state where the optical fiber reel 1 is mounted on a base plate BP such as an optical junction box. 6A is a perspective view of the optical fiber reel 1 and the base plate BP as viewed from above. FIG. 6B is a perspective view of the same optical fiber reel 1 and base plate BP as viewed from below.

  The base plate BP is provided with a shaft hole 501 that defines the mounting position of the optical fiber reel 1 and the extra length processing member 10. In the optical fiber reel 1 in which the four extra length processing members 10 are connected in a circle shape, the shaft positioning protrusion 136 of each extra length processing member 10 is rotatably inserted into the shaft hole 501. Thus, by first inserting the shaft positioning protrusion 136 into the shaft hole 501, positioning of the optical fiber reel 1 (remaining length processing member 10) to a predetermined mounting position becomes easy.

  In addition, a locked embossed portion 502 protruding in a circular dome shape is embossed on the base plate BP in four directions perpendicular to each other with the shaft hole 501 as the center. Moreover, the top part and one side part of each to-be-latched embossed part 502 are the opening parts 503. Further, two lock holes 504 and 504 are formed on the extension line of each locked embossed portion 502 with the shaft hole 501 as the center.

  The lower locking portion 131 (see FIGS. 3 and 4) of each extra length processing member 10 constituting the optical fiber reel 1 is inserted into each opening 503, and the entire optical fiber reel 1 is watched around the shaft hole 501. When rotated around, the locked embossed portion 502 enters the escape portion 134, and the hook-shaped portion 131 a of each lower locking portion 131 is fitted into the locked embossed portion 502 and locked. Since the protrusion of the embossed portion 502 to be locked is covered with the escape portion 134, the bottom plate portion 120 of each extra length processing member 10 is prevented from floating above the base plate BP, and the lower locking portion 131 does not protrude from the back surface of the base plate BP. Therefore, it can be directly attached to another flat plate. At the same time, lock protrusions 133 and 133 provided on the lower surface side of each extra length processing member 10 are fitted in the lock holes 504 and 504. Accordingly, the rotation of the optical fiber reel 1 is restricted, and the optical fiber reel 1 is prevented from being detached from the base plate BP by the locked embossed portion 502 and the lower locking portion 131 in the locked state.

  When removing the optical fiber reel 1 from the base plate BP, first, by operating the lower guide portion 121 provided on the outer peripheral portion of each extra length processing member 10 and lifting the lock release lever 132 slightly, the lock protrusion 133, 133 is disengaged from the lock holes 504 and 504, and the optical fiber reel 1 can be rotated. In this state, the locked state of the locked embossed portion 502 and the lower locking portion 131 is also released by rotating the optical fiber reel 1 counterclockwise from the above-described locked state position. Thereby, the optical fiber reel 1 can be separated from the base plate BP.

  As described above, according to the optical fiber reel 1 of the present embodiment, the shaft positioning protrusion 136 of each extra length processing member 10 is easily inserted into the shaft hole 501 of the base plate BP and rotated to easily reach the predetermined mounting position of the base plate BP. Can be installed.

  In the present embodiment, the unlocking lever that releases the locked state between the locked embossed portion 502 embossed at a predetermined position of the base plate BP and the lower locking portion 131 that restricts the rotation of the optical fiber reel 1. The operation portion 132 is a lower guide portion 121 provided on the outer peripheral portion of each extra length processing member 10. Therefore, the rotation restriction state of the optical fiber reel 1 can be easily released simply by lifting the lower guide portion 121 of the outer peripheral portion of each extra length processing member 10. Therefore, the operability for removing the optical fiber reel 1 is improved as compared with the prior art.

  It should be noted that not only in the form of a circle like the optical fiber reel 1, but also with a single member or a plurality of connected extra length processing members 10 can be easily attached to and detached from the base plate BP in the same manner as described above. Can do.

(Explanation of stacking method)
The plurality of extra length processing members 10 can be easily stacked in the same manner as the above-described installation on the base plate BP. Here, FIG. 7 to FIG. 10 are all perspective views showing a stacked state of two extra length processing members 10 connected to the upper stage and two extra length processing members 10 connected to the lower stage. Here, the stacking method of the two surplus length processing members 10 connected will be described with reference to FIGS. 7 to 10, but the same applies to the single surplus length processing members 10 and the optical fiber reels 1 connected in a circle. Can be stacked in the same way.

  As described above, on the upper surface of the surplus length processing member 10, the arc-shaped positioning guide 114, the locked portion 112, and the two lock holes 113 provided in parallel on the radial extension of the locked portion 112. , 113 are formed (see FIGS. 1 and 2). The surplus length processing member 10 is stacked with the lower locking portion 131 (see FIGS. 3 and 4) on the lower surface thereof inserted into the through-hole 112a of the locked portion 112 of the surplus length processing member 10 on the lower side. (See FIGS. 7 and 8).

  When the upper-stage surplus length processing member 10 is rotated clockwise around the positioning guide 114 of the lower-stage surplus length processing member 10, the hook-shaped portion 131a of the upper-stage lower locking portion 131 is moved to the lower-stage side. It fits into the locking pocket 112b of the locked portion 112 and locks (see FIGS. 9 and 10). At the same time, the lock protrusions 133 and 133 of the upper excess length processing member 10 are fitted into the lock holes 113 and 113. Thereby, the rotation of the surplus length processing members 10 is restricted, and the upper and lower surplus length processing members 10 are locked by the upper side lower locking portion 131 and the lower side locked portion 112 in the locked state. Locked so that they are not separated.

  In particular, as shown in FIG. 11, in this embodiment, the connection boundary lines BD1 and BD2 of the extra length processing members 10 and 10 that are stacked and locked are configured to be at different positions on the upper stage side and the lower stage side. Has been. That is, as shown in FIGS. 1 and 2, the lock holes 113, 113 on the upper surface side of the surplus length processing member 10 are slightly shifted in the clockwise direction from the circumferential center position of the fan-shaped top plate portion 110. It is arranged on a straight line extending to On the other hand, the lock protrusions 133 and 133 on the lower surface side of the extra length processing member 10 are arranged on a straight line extending in the radial direction at the center in the circumferential direction of the fan-shaped bottom plate portion 120 as shown in FIGS. . Therefore, at the lock position where the upper lock projections 133 and 133 are fitted in the lower lock holes 113 and 113, the connection boundary lines BD1 and BD2 of the upper and lower excess length processing members 10 and 10 stacked are at a constant angle. It will be displaced with a difference.

  By connecting the connection boundary lines BD1 and BD2 of the upper and lower surplus length processing members 10 and 10 stacked at different positions, for example, the external force applied to the surplus length processing member 10 on one step side is reduced. Then, the two extra length processing members 10 are dispersed on the other stage side. For this reason, it is possible to improve the mechanical durability while maintaining the flexible structure of the stacked extra length processing members 10 (or the optical fiber reels 1) as a whole.

  In order to separate the upper and lower surplus length processing members 10, first, the lower guide portion 121 provided on the outer peripheral portion of the upper surplus length processing member 10 is operated to slightly lift the lock release lever 132. As a result, the lock protrusions 133 and 133 are disengaged from the lock holes 113 and 113, and the upper excess length processing member 10 is rotated counterclockwise in this state, so that the lower locking portion 131 and the locked portion 112 are rotated. The locked state is also released. In this way, the upper and lower surplus length processing members 10 and 10 can be easily separated by a simple operation.

DESCRIPTION OF SYMBOLS 10 Surplus length process member 101 Arc-shaped trunk | drum 101a Guide surface 102 1st connection part (L-shaped engaged part) 103 2nd connection part (L-shaped engagement part)
110 Top plate portion 111 Upper guide portion 112 Locked portion 113 Lock hole 114 Positioning guide 120 Bottom plate portion 121 Lower guide portion 122 Slide restriction hole portion 123 Restriction hole 124 Restriction groove 125 Slide restriction projection portion 126 First projection portion 127 Second protrusion 131 Lower locking part 132 Lock release lever 133 Lock protrusion 134 Escape part 135 Positioning hole 136 Axis positioning protrusion BP Base plate

Claims (5)

An arcuate guide surface around which the optical fiber is wound;
An extra length processing member for an optical fiber that is connected to the top and bottom of the guide surface and is parallel to each other and includes a top plate portion and a bottom plate portion,
For the optical fiber, characterized in that the bottom plate portion on the inner peripheral side with respect to the guide surface is provided with a locking portion that can be locked with another member in the relief portion that is recessed with respect to the surface of the bottom plate portion . Extra length processing member. The extra length processing member for an optical fiber according to claim 1, wherein the lower surface of the locking portion and the lower surface of the bottom plate portion are formed on the same level surface . The surplus length processing member for an optical fiber according to claim 1 , further comprising a connecting portion that can be coupled to another surplus length processing member on an inner peripheral side of the guide surface . The extra length processing member for an optical fiber according to claim 3 , wherein the bottom plate portion is formed in a fan shape, and a projection portion that can be inserted into another member is provided on an axial side of the bottom plate portion . An optical fiber reel formed by connecting a plurality of surplus length processing members according to claim 1.