JP6691929B2 - Optical fiber cable holder and optical wiring unit - Google Patents

Description

  The present invention relates to an optical fiber cable holder and an optical wiring unit.

  As an optical wiring unit that constitutes an optical connection box, an optical wiring box, or the like, there is known an optical wiring unit in which a plurality of optical component storage trays are inserted and stored in a housing. In each of the optical component storage trays housed in the housing in this way, a plurality of optical connector plugs (hereinafter sometimes simply referred to as “optical plugs”) from which the optical connector plug (hereinafter, simply referred to as “optical plug”) can be attached and detached from the front side (worker side). An adapter is provided. Since the optical fiber cables are connected to the respective optical adapters via the optical plugs, a large number of optical fiber cables hang down on the front side (worker side) of the optical wiring unit. At this time, by using the optical fiber cable holder, a large number of optical fiber cables can be bundled and held for each optical component storage tray.

  Regarding an optical fiber cable holder used in such an optical wiring unit, for example, in Patent Document 1, a gap (cable insertion port 25 shown in FIG. 1) between end portions of arm portions of the optical fiber cable holder is provided. An optical fiber cable holder capable of inserting or removing an optical fiber cable is disclosed. Further, Patent Document 2 discloses an optical fiber cable holder that holds an optical fiber cable so as to surround it with four sides. A member (one side 31 shown in FIG. 2C) of one of the four sides is rotatably provided around one end, and the optical fiber cable is inserted or taken out by rotating the member. be able to.

JP 2004-55877 A JP, 2008-33012, A

  In the case of the optical fiber cable holder described in Patent Document 1, when the optical fiber cable is inserted into or taken out of the optical fiber cable holder, the optical fiber cable is inserted while opening the gap between the end portions of the arm portions, Or you need to take it out. For this reason, when the arm part is opened, touching an optical fiber cable different from the optical fiber cable to be inserted or taken out may bend or damage the other optical fiber cable, resulting in loss. There was a risk of increasing it. Further, even in the case of the optical fiber cable holder described in Patent Document 2, the member (one side 31) on one side pivots largely toward the outside of the optical fiber cable holder when the arm portion is opened. Similarly, there is a risk of touching the other optical fiber cable.

  It is an object of the present invention to prevent touching of another optical fiber cable when the optical fiber cable is inserted or taken out by opening the pair of arm portions of the optical fiber cable holder.

Some embodiments of the present invention are optical fiber cable holders that have a pair of arm portions , and the pair of arm portions hold a plurality of optical fiber cables so as to surround the plurality of optical fiber cables. The plurality of optical fiber cables are formed so as to be held side by side in a predetermined direction, and at least one of the pair of arm portions has a deformable portion that is elastically deformable, A latch portion provided at an end portion of the deformable portion in the predetermined direction , wherein the arm portion latches with respect to another arm portion, and the latch portion includes the pair of latch portions with respect to the other arm portion. of moving in the longitudinal direction of the optical fiber cable which is surrounded by the arm portion can release the latch, the distance between the pair of arm portions when the state in which the latch is released, the predetermined Toward the direction of an optical fiber cable holder, characterized in that gradually increases.

  Other characteristics of the present invention will be clarified by the description and drawings described later.

  According to some embodiments of the present invention, when the pair of arms of the optical fiber cable holder is opened to insert or remove the optical fiber cable, it is possible to prevent the optical fiber cable from touching another optical fiber cable. You can

FIG. 1 is a perspective view of an optical wiring unit 10 provided with an optical fiber cable holder 20 of this embodiment. FIG. 2A is a plan view of the optical fiber cable holder 20 (when the latch is released) of the present embodiment. FIG. 2B is a front view of the optical fiber cable holder 20 (when the latch is released) of the present embodiment. FIG. 3A is a plan view of the optical fiber cable holder 20 (when latched) of the present embodiment. FIG. 3B is a front view of the optical fiber cable holder 20 (when latched) of the present embodiment. 4A and 4B are cross-sectional views showing the state of the latch operation of the optical fiber cable holder 20 of the present embodiment. FIG. 5 is a cross-sectional view showing a state of the latch release operation of the optical fiber cable holder 20 of this embodiment. FIG. 6A is a diagram showing the latch portion 24 of the optical fiber cable holder 20 of the first modified example. FIG. 6B is a diagram showing the latch portion 24 in the optical fiber cable holder 20 of the second modified example.

  At least the following matters will be apparent from the description and drawings described below.

  An optical fiber cable holder having a pair of arm portions and holding the pair of arm portions so as to surround an optical fiber cable, wherein at least one of the pair of arm portions is elastically deformed. A deformable portion that is capable of being formed, and a latch portion that is provided at an end portion of the deformable portion and that the arm portion latches with respect to another arm portion, and the latch portion is provided on the other arm portion. On the other hand, it becomes clear that the optical fiber cable holder is characterized in that the latch can be released by moving in the longitudinal direction of the optical fiber cable surrounded by the pair of arm portions. According to such an optical fiber cable holder, when the pair of arms of the optical fiber cable holder is opened to insert or take out the optical fiber cable, it is possible to prevent the optical fiber cable from touching another optical fiber cable. You can

  It is preferable that the pair of arm portions are formed such that the side of the latch portion is opened when the latch is released. This allows the optical fiber cable to be easily inserted or removed.

  It is preferable that the at least one arm portion includes a latch releasing pawl provided on the latch portion, and the latch can be released by moving the latch releasing pawl in the longitudinal direction. Thereby, the latch of the latch portion can be easily released.

  An optical wiring unit comprising: a plurality of lead-out portions each including an optical connector connecting portion; and an optical fiber cable holder provided in the lead-out portion and holding an optical fiber cable connected to the optical connector connecting portion, The optical fiber cable holder includes a pair of arm portions, the pair of arm portions holds the optical fiber cable so as to surround the optical fiber cable, and at least one of the pair of arm portions is elastically deformed. A deformable portion and a latch portion provided at an end of the deformable portion, the arm portion latching with respect to another arm portion, and the latch portion with respect to the other arm portion. Then, the latch can be released by moving in the longitudinal direction of the optical fiber cable surrounded by the pair of arm portions. It becomes apparent. According to such an optical wiring unit, when the pair of arms of the optical fiber cable holder is opened to insert or take out the optical fiber cable, it is possible to suppress touching another optical fiber cable. ..

  The pair of arm portions are arranged in the same direction as the direction in which the plurality of drawer portions are arranged, and are formed so that the side of the latch portion opens when the latch is in the released state. desirable. This allows the optical fiber cable to be easily inserted or removed.

=== This Embodiment ===
<Overall structure of optical wiring unit 10>
FIG. 1 is a perspective view of an optical wiring unit 10 provided with an optical fiber cable holder 20 of this embodiment.

  In the following description, each direction is defined as shown in the figure. That is, the direction of moving (drawing or pushing) the drawer portion 12 with respect to the housing 11 of the optical wiring unit 10 is the "front-back direction", the side of drawing the drawer portion 12 is "front", and the opposite side (the drawer portion 12). The side where you push in is "rear". The front-back direction may be referred to as the “pull-out direction” or the “push-in direction”. Further, the direction in which the plurality of optical connector adapters 16 (hereinafter, may be simply referred to as “optical adapter 16”) are arranged in the drawer portion 12 is referred to as “vertical direction”, and the optical fiber cable holder 20 is The side provided is "lower" and the opposite side is "upper". Further, a direction perpendicular to the front-back direction and the vertical direction is referred to as "left-right direction", the right side when viewed from the front to the back is referred to as "right", and the opposite side is referred to as "left". The left-right direction is also the direction in which the plurality of drawers 12 are arranged.

  The optical wiring unit 10 is a device in which a backbone optical fiber cable having a plurality of cores is branched into optical fiber cables for each single core, and an end of each branched single optical fiber cable is terminated so that a connector can be connected. Is. The optical wiring unit 10 may be called an optical connection box. Further, the optical wiring unit 10 may be referred to as an optical termination box or an optical wiring box. As shown in FIG. 1, in the present embodiment, a trunk optical fiber cable 1 having a plurality of cores is branched to an inner optical fiber cable 3 for each single core by a branching part 2 provided at a rear portion of an optical wiring unit 10. ing. Furthermore, the bundle of the branched inner-side optical fiber cables 3 is introduced into the housing 11 of the optical wiring unit 10, and the ends of the inner-side optical fiber cables 3 are connected to the optical adapter 16 inside the housing 11. Each is connected (not shown). An inner side optical connector plug 4 (hereinafter sometimes simply referred to as “inner side optical plug 4”) is provided at an end of each inner side optical fiber cable 3, and each inner side optical plug 4 Are connected to the optical adapter 16. Then, the working side optical connector plug 5 (hereinafter, may be simply referred to as “working side optical plug 5”) is inserted into and removed from the outside of the housing 11 with respect to the optical adapter 16 to which the inside side optical plug 4 is connected. By doing so, the connection between the internal optical fiber cable 3 and the working optical fiber cable 6 can be switched. As shown in FIG. 1, the bundle of working-side optical fiber cables 6 is routed below the optical wiring unit 10.

  The optical wiring unit 10 has a housing 11, a plurality of drawer portions 12, and a slide mechanism 50.

  The housing 11 is a member that houses the plurality of drawers 12 and the slide mechanism 50. The housing 11 is also a member that fixes the optical wiring unit 10 by being attached to a rack (not shown). Since the front surface of the housing 11 is not provided and is open, the drawer 12 described below can be drawn to the front of the housing 11. A cover member (not shown) may be provided so as to cover the front surface of the housing 11 when all of the plurality of drawer portions 12 are in the pushed-in state (described later).

  The drawer 12 is a member that holds a plurality of (here, six) optical adapters 16 (described later). As shown in FIG. 1, the lead-out portion 12 is formed in a plate shape perpendicular to the left-right direction. The drawer 12 has an optical adapter 16, and a plurality of the optical adapters 16 are arranged on the front side of the drawer 12. In the optical wiring unit 10 of this embodiment, twelve lead-out portions 12 are arranged in the left-right direction. However, the arrangement direction and the number of the lead-out portions 12 in the optical wiring unit 10 of the present embodiment are not limited to this. A slide mechanism 50 is provided at each of the upper and lower ends of the drawer 12. Thereby, the drawer portion 12 can be moved (drawn or pushed) with respect to the housing 11.

  In FIG. 1, of the plurality of lead-out portions 12 included in the optical wiring unit 10, the second lead-out portion 12 from the left is drawn out. The state in which the pull-out portion 12 is pulled out in this way may be referred to as a “pull-out state”. Further, as shown in FIG. 1, among the plurality of lead-out portions 12 included in the optical wiring unit 10, the lead-out portions 12 other than the second lead-out portion 12 from the left are not drawn out. In this way, the state in which the drawer 12 is not pulled out may be referred to as the “initial state” or the “pushed-in state”. Since the optical adapter 16 (described later) is pulled out to the front side of the optical adapters 16 of the other drawers 12 in the drawer 12 in the pulled-out state, the worker is required to work on the working-side optical plug 5 with respect to the optical adapter 16. Can be easily inserted and removed. Then, when the pull-out portion 12 in the pull-out state is pushed in, the initial state (or push-in state) is restored again.

  The optical adapter 16 is a member that enables connector connection of optical fiber cables inside and outside the optical wiring unit 10. As shown in FIG. 1, in the present embodiment, the inner side optical plug 4 and the working side optical plug 5 are connected via the optical adapter 16, so that the inner side optical fiber cable 3 inside the casing 11 and the casing. The working side optical fiber cable 6 outside the body 11 is connector-connected. The optical adapter 16 may be referred to as the "optical connector connecting portion 16". As shown in FIG. 1, the lead-out portion 12 of the optical wiring unit 10 of this embodiment has a plurality (here, six) of optical adapters 16. The optical adapter 16 is a 4-core type optical adapter. For this reason, the drawer portion 12 has a total of 24 connection ports for the working side optical plugs 5 (or the internal side optical plugs 4) in the vertical direction. However, the arrangement direction and the number of the optical adapters 16 and the connection ports are not limited to this.

  The slide mechanism 50 is a member that allows the drawer 12 to move in the front-rear direction. The fixed side rail of the slide mechanism 50 is attached to the housing 11, and the movable side rail of the slide mechanism 50 is attached to the drawer 12. By moving the movable rail in the front-rear direction with respect to the fixed rail, the drawer portion 12 can move in the front-rear direction with respect to the housing 11. A pair of slide mechanisms 50 are provided above and below the drawer 12.

  In the present embodiment, the optical wiring unit 10 further includes an optical fiber cable holder 20, a wiring identification unit 40, a coupling mechanism 60, and a cable introduction portion 80.

  The optical fiber cable holder 20 is a member that bundles and holds a plurality of optical fiber cables. As shown in FIG. 1, the optical fiber cable holder 20 of the present embodiment is attached to the lower part of the drawer 12. Then, the plurality of working-side optical fiber cables 6 that are connected to the optical adapter 16 of the pull-out portion 12 and hang downward are bundled and held. As described above, since the drawer portion 12 has a total of 24 connection ports for the working side optical plugs 5 in the vertical direction, the optical fiber cable holder 20 has a maximum of 24 working side optical fiber cables 6. Can be bundled and held. However, the number of working-side optical fiber cables 6 that the optical fiber cable holder 20 can hold is not limited to this. Alternatively, for example, the optical fiber cable holder 20 may be attached to the inside of the housing 11 to bundle and hold a plurality of inside optical fiber cables 3. Further, the optical fiber cable holder 20 may bundle and hold a plurality of optical fiber cables other than the working side optical fiber cable 6 and the inside side optical fiber cable 3.

  The wiring identification unit 40 is a member that identifies a bundle of optical fiber cables. As shown in FIG. 1, the wiring identification unit 40 of the present embodiment is attached to a fixing member 13 provided inside the housing 11. Then, the plurality of internal optical fiber cables 3 connected to the optical adapter 16 of the pullout portion 12 are bundled and held. However, in FIG. 1, a state in which the wiring identification unit 40 bundles and holds a plurality of inside optical fiber cables 3 is omitted. The identification mark 44 provided on the identification section 42 of the wiring identification unit 40 can identify the bundle of the internal optical fiber cables 3 for each extraction section 12. As described above, since the lead-out portion 12 has a total of 24 connection ports for the inner optical plugs 4 in the vertical direction, the wiring identification unit 40 has a maximum of 24 inner optical fiber cables 3. Can be bundled and held. However, the number of the internal optical fiber cables 3 that the wiring identification unit 40 can hold is not limited to this. Further, for example, the wiring identification unit 40 may be attached to the outside of the housing 11 to bundle and hold a plurality of working-side optical fiber cables 6. Furthermore, the wiring identification unit 40 may bundle and hold a plurality of optical fiber cables other than the working side optical fiber cable 6 and the inside side optical fiber cable 3.

  The connection mechanism 60 is a member that allows the lead-out portion of the optical wiring unit to be detached from the housing of the optical wiring unit. As shown in FIG. 1, the connection mechanism 60 of the present embodiment is provided between the drawer 12 and the slide mechanism 50. A pair of connecting mechanisms 60 is provided above and below the drawer 12.

  The cable introducing unit 80 is a member for introducing the optical fiber cable into the housing of the optical wiring unit. As shown in FIG. 1, the cable introducing portion 80 of the present embodiment is provided at the rear portion of the housing 11. Further, the branch portion 2 is attached to the cable introduction portion 80. The trunk optical fiber cable 1 having a plurality of cores is branched by the branching section 2 into the inner optical fiber cables 3 for each single core, and the bundle of the inner optical fiber cables 3 is introduced into the cable introduction section 80 by an introduction opening 81. Is introduced inside the housing 11.

<Optical fiber cable holder 20>
FIG. 2A is a plan view of the optical fiber cable holder 20 (when the latch is released) of the present embodiment. FIG. 2B is a front view of the optical fiber cable holder 20 (when the latch is released) of the present embodiment. FIG. 3A is a plan view of the optical fiber cable holder 20 (when latched) of the present embodiment. FIG. 3B is a front view of the optical fiber cable holder 20 (when latched) of the present embodiment.

  FIGS. 2A and 2B show a state in which the latches 24 (described later) provided on the pair of arm portions 21 of the optical fiber cable holder 20 are unlatched (hereinafter, referred to as “during latch release”). ) Is shown. 3A and 3B, a state in which a latch portion 24 (described later) provided on the pair of arm portions 21 of the optical fiber cable holder 20 is latched (hereinafter, may be referred to as "at the time of latching"). Is shown. As described above, the optical fiber cable holder 20 is a member that bundles and holds a plurality of optical fiber cables. The optical fiber cable holder 20 has an arm portion 21 and a mounting portion 22.

  The arm portion 21 is a portion that bundles and holds a plurality of optical fiber cables. The arm portion 21 is provided on the front side of the optical fiber cable holder 20. A mounting portion 22 is provided on the rear side of the arm portion 21. As shown in FIGS. 2A and 3A, the optical fiber cable holder 20 of the present embodiment is provided with a pair of arm portions 21 (arm portions 21A and 21B). The pair of arm portions 21 are arranged in the left-right direction, and each arm portion 21 is provided so as to extend forward from the mounting portion 22 (on the side of the latch portion 24). As shown in FIG. 2A, the space surrounded by the pair of arm portions 21 at the time of latching is a space for bundling and holding a plurality of working-side optical fiber cables 6. Further, the space for bundling and holding the plurality of working-side optical fiber cables 6 is formed as a long space in the front-rear direction. Therefore, as shown in FIG. 2A, the bundle of working-side optical fiber cables 6 is held side by side in the front-rear direction. This makes it easier to find an arbitrary working-side optical fiber cable 6 from the bundle of working-side optical fiber cables 6 and to easily take it out. Further, since the bundle of the working optical fiber cables 6 is held side by side in the front-rear direction, it is possible to prevent the working optical fiber cables 6 from being entangled with each other.

  As described above, the pair of arm portions 21 are arranged in the left-right direction, and this arrangement direction is the same as the arrangement direction of the plurality of lead-out portions 12 of the optical wiring unit 10. Thereby, even after the arbitrary pulling-out portion 12 among the plurality of pulling-out portions 12 is pulled out and the latches 24 of the pair of arm portions 21 in the pulling-out portion 12 are released, the operator can enter the optical fiber cable entrance / exit. The working-side optical fiber cable 6 can be easily inserted or removed from 28.

  In the following description, in the pair of arm portions 21 of the optical fiber cable holder 20, the members / parts of the arm portion 21 (arm portion 21A) located on the right side are provided with a suffix “A” on the reference numeral and on the left side. The subscript "B" is added to the reference numerals of the members / parts of the arm portion 21 (arm portion 21B) located. Further, when referring to a member / site common to the arm portion 21A and the arm portion 21B, a subscript may not be added. For example, both the deforming portion 23A and the deforming portion 23B may be simply referred to as “deforming portion 23”.

  As described above, the optical fiber cable holder 20 shown in FIG. 2A is in a state where the latches of the latch portions 24 provided on the pair of arm portions 21 are released (at the time of releasing the latch). In the optical fiber cable holder 20 at the time of unlatching, the pair of arm portions 21 are formed in advance so as to open from the attachment portion 22 toward the front (toward the latch portion 24). That is, the horizontal distance between the pair of arm portions 21 is formed in advance so as to gradually increase from the mounting portion 22 toward the front (on the side of the latch portion 24). At this time, an optical fiber cable entrance / exit 28 is formed between the front end portions (latch portions 24) of the pair of arm portions 21. Thereby, the worker can easily insert or remove the working-side optical fiber cable 6 from the optical fiber cable entrance / exit 28.

  As described above, the optical fiber cable holder 20 shown in FIG. 3A is in a state where the latch portions 24 provided on the pair of arm portions 21 are latched (at the time of latching). In the above-described optical fiber cable holder 20 at the time of releasing the latch, the pair of arm portions 21 are formed in advance so as to open from the attachment portion 22 toward the front (the side of the latch portion 24). In the present embodiment, the front end portions of the pair of arm portions 21 are moved inwardly (hereinafter, sometimes referred to as “latching direction”) to elastically deform the pair of arm portions 21 and the latch portion 24. Latch. Then, in the optical fiber cable holder 20 at the time of latching, the optical fiber cable entrance / exit 28 formed between the front end portions (latch portions 24) of the pair of arm portions 21 is closed. In this way, a space surrounded by the pair of arm portions 21, which is a space for bundling and holding the plurality of working-side optical fiber cables 6, is formed. In addition, since the optical fiber cable entrance / exit 28 is closed, the working side optical fiber cable 6 cannot enter / exit the space surrounded by the pair of arm portions 21. Thereby, a plurality of working-side optical fiber cables 6 can be bundled and held.

  The arm portion 21 has a deforming portion 23 and a latch portion 24.

  The deforming portion 23 is a portion that is elastically deformed when the latch portion 24 is latched or when the latch portion 24 is unlatched. As the material of the deformable portion 23, a plastic material may be used, or spring steel such as high carbon steel, alloy steel, and stainless steel may be used. As shown in FIG. 2A, in the optical fiber cable holder 20 at the time of unlatching, the pair of deforming portions 23 (deforming portions 23A and 23B) open from the attaching portion 22 toward the front side (side of the latch portion 24). Is preformed. Then, as shown in FIG. 2B, in order to latch the latch portion 24, the pair of deforming portions 23 are elastically deformed in the latching direction.

  The latch portion 24 is a portion that latches at the front end portions of the pair of arm portions 21. As shown in FIG. 2B and FIG. 3B, the latch portion 24A extends to the left side (latch portion 24B side) from the lower portion at the front end of the deformable portion 23A. The latch portion 24A is provided with a latch protrusion 26A extending upward. Further, as shown in FIGS. 2B and 3B, the latch portion 24B extends to the right side (latch portion 24A side) from the upper portion of the front end portion of the deformable portion 23B. Further, the latch portion 24B is provided with a latch protrusion portion 26B extending downward.

  The latch protrusion 26 has an abutting surface 29 and a locking surface 30 (refer to FIG. 2B for the abutting surface 29 and FIG. 3B for the locking surface 30). The abutting surface 29 is a surface where the latch protrusions 26 (the latch protrusion 26A and the latch protrusion 26B) are abutted against each other when shifting from the latch release state to the latch state. The butting surface 29 is formed so as to be inclined with respect to a surface perpendicular to the latch direction. The locking surface 30 is a surface on which the latch protrusions 26 (the latch protrusion 26A and the latch protrusion 26B) are locked at the time of latching. It should be noted that the abutting surface 29 and the locking surface 30 do not have to be formed in this way as long as the latch portion 24 has a latching shape. The operation of the abutment surface 29 and the locking surface 30 will be described later.

  As shown in FIGS. 2A and 3A, in the optical fiber cable holder 20 of the present embodiment, the latch protrusion 26 is provided with the latch release claw 25. The latch release claw 25 is a part for releasing the latch of the latch portion 24. By pressing the latch release claw 25 downward, the latch portion 24A provided with the latch release claw 25 moves downward, and the latch protrusion 26A and the latch protrusion 26B are disengaged. As a result, the latch of the latch section 24 can be released. Since the latch protrusions 26A and 26B can be unlocked by directly pressing the latch portion 24A downward, the latch release claw 25 need not be provided. However, since the latch release claw 25 is provided, the operator can release the latch of the latch portion 24 even when a large number of working-side optical fiber cables 6 hang down in front of the optical fiber cable holder 20. Can be easily found. The operation of the latch release claw 25 will be described later.

  The attachment portion 22 is a portion that fixes the optical fiber cable holder 20 to the drawer portion 12. The mounting portion 22 is provided on the rear side of the optical fiber cable holder 20. A pair of arm portions 21 is provided on the front side of the mounting portion 22. The optical fiber cable holder 20 can be fixed to the drawer 12 by screwing and fixing the attachment 22 to the drawer 12. The mounting portion 22 may not be provided by directly fixing the pair of arm portions 21 to the drawer portion 12.

  The mounting portion 22 is provided with a bending portion 27 (see also the later-described FIGS. 4A, 4B, and 5 for the bending portion 27). The curved portion 27 is a curved surface provided on the pair of arm portions 21 side in the attachment portion 22. The bending portion 27, together with the pair of arm portions 21 at the time of latching, constitutes a space for bundling and holding a plurality of working-side optical fiber cables 6. Since the bending portion 27 is provided in the mounting portion 22, the bending of the working optical fiber cable 6 is limited even when the working optical fiber cable 6 contacts the bending portion 27. In this way, since the curved portion 27 that contacts the working-side optical fiber cable 6 is formed as a curved surface, it is possible to suppress excessive bending of the working-side optical fiber cable 6. Thereby, damage to the working-side optical fiber cable 6 can be suppressed and the working-side optical fiber cable 6 can be protected.

<Latch operation>
4A and 4B are cross-sectional views showing the state of the latch operation of the optical fiber cable holder 20 of the present embodiment. 4A and 4B, a front view of the latch portion 24 of the optical fiber cable holder 20 is shown on the right side. In addition, a cross-sectional view taken along the line AA in FIGS. 4A and 4B is shown on the left side.

  As described above, in the latch operation of the present embodiment, the front end portions of the pair of arm portions 21 are moved in the latching direction with respect to each other, whereby the pair of arm portions 21 are elastically deformed and the latch portion 24 is latched. As shown on the right side of FIG. 4A, when the operator first moves the front end portions of the pair of arm portions 21 in the latch direction with respect to each other, the pair of latch protrusions 26 (latch protrusion 26A and latch protrusion 26B) The abutting surfaces 29 are abutted against each other. Further, when the worker presses the front end portions of the pair of arm portions 21 in the latching direction with respect to each other, the pair of latch protrusions 26 are displaced so as to slide along the mating abutting surfaces 29, and the pair of latch protrusions. 26 is relatively displaced in the vertical direction. Then, as shown in the right side of FIG. 4B, when the latch projections 26 are crossed over each other, the latch projections 26 shown in FIG. 3B are engaged with each other, that is, in the latched state. Accordingly, the latch portion 24 can be easily latched only by the operation of pinching the end portions of the pair of arm portions 21. That is, the worker can easily latch the latch portion 24 only by the operation of pressing the front end portions of the pair of arm portions 21 in the latch direction.

  As described above, when the pair of latch protrusions 26 are relatively displaced in the vertical direction, the pair of deformable portions 23 are relatively elastically deformed in the vertical direction. That is, as shown on the left side of FIG. 4B, the deformable portion 23A elastically deforms downward and the deformable portion 23B elastically deforms upward. That is, the pair of deforming portions 23 (deforming portion 23A and deforming portion 23B) are deformed in the longitudinal direction of the working-side optical fiber cable 6. This can prevent the pair of deforming portions 23 from touching the bundle of working-side optical fiber cables 6 at the time of latching.

<Latch release operation>
FIG. 5 is a cross-sectional view showing a state of the latch release operation of the optical fiber cable holder 20 of this embodiment. In addition, in FIG. 5, a front view of the latch portion 24 of the optical fiber cable holder 20 is shown on the right side. In addition, a cross-sectional view taken along the line BB of FIG. 5 is shown on the left side.

  As described above, in the latch release operation of the present embodiment, by pressing the latch release claw 25 downward, the latch portion 24A provided with the latch release claw 25 moves downward, and the latch protrusion 26A and the latch protrusion 26A are latched. The engagement with the protruding portion 26B is released, and the latch of the latch portion 24 is released. As shown in the right side of FIG. 5, when the operator moves the latch release claw 25 downward, the latch protrusion 26A rides over the latch protrusion 26B, so that the latch protrusion 26A and the latch protrusion 26B are locked. Comes off. When the latch protrusion 26A is displaced downward with respect to the latch protrusion 26B, the deformable portion 23A is elastically deformed downward with respect to the deformable portion 23B. That is, as shown on the left side of FIG. 5, the deformable portion 23A elastically deforms downward. That is, the deforming portion 23A is deformed in the longitudinal direction of the working-side optical fiber cable 6. This can prevent the pair of deforming portions 23 from touching the bundle of working-side optical fiber cables 6 when the latch is released. Therefore, when the pair of arm portions 21 of the optical fiber cable holder 20 is opened and the working side optical fiber cable 6 is inserted or removed, it is possible to suppress touching another working side optical fiber cable 6. ..

<First Modification>
FIG. 6A is a diagram showing the latch portion 24 of the optical fiber cable holder 20 of the first modified example. In the optical fiber cable holder 20 of the present embodiment, the latching surface 30 of the latch protrusion 26 is a surface perpendicular to the latch direction. However, in the first modification shown in FIG. 6A, the locking surface 30 of the latch protrusion 26 may be provided obliquely with respect to the latch direction. This can prevent the latch from being unintentionally released even when a force is applied in the direction (vertical direction) in which the latch of the latch portion 24 is released during latching.

<Second Modification>
FIG. 6B is a diagram showing the latch portion 24 in the optical fiber cable holder 20 of the second modified example. In the optical fiber cable holder 20 of the present embodiment, the latch portions 24 are provided at the front end portions of the pair of arm portions 21, respectively. However, in the first modification shown in FIG. 6B, the latch portion 24 is provided only on one arm portion 21 (arm portion 21A) of the pair of arm portions 21, and the latch projection portion 26 is provided on the other arm portion 21. May be directly locked. In the second modified example shown in FIG. 6B, the arm portion 21A is provided with the latch portion 24A, but the arm portion 21B is provided with the latch portion 24B and the latch projection portion 26B is directly engaged with the arm portion 21A. You may stop.

=== Other Embodiments ===
The above-described embodiments are for facilitating the understanding of the present invention and are not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof and that the present invention includes equivalents thereof.

1 backbone optical fiber cable, 2 branches,
3 inside optical fiber cable, 4 inside optical connector plug (inside optical plug),
5 working optical connector plug (working optical plug), 6 working optical fiber cable,
10 optical wiring unit (optical connection box), 11 housing,
12 drawer part, 16 optical connector adapter (optical adapter, optical connector connection part),
20 optical fiber cable holder, 21 (21A ・ 21B) arm part,
22 mounting part, 23 (23A / 23B) deforming part,
24 (24A / 24B) Latch part, 25 Latch release claw,
26 (26A / 26B) Latch protrusion, 27 Curved part,
28 optical fiber cable entrance / exit, 29 butting surface, 30 locking surface

Claims (5)

An optical fiber cable holder having a pair of arm portions and holding the pair of arm portions so as to surround a plurality of optical fiber cables,
The pair of arm portions are formed so that the plurality of optical fiber cables are held side by side in a predetermined direction,
At least one of the pair of arm portions is
A deformable portion capable of elastic deformation,
A latch portion provided at an end portion of the deformable portion in the predetermined direction, the arm portion latching with another arm portion;
The latch portion can be released by moving in the longitudinal direction of the optical fiber cable surrounded by the pair of arm portions with respect to the other arm portion ,
The optical fiber cable holder characterized in that the distance between the pair of arm portions gradually increases in the predetermined direction when the latch is released . The optical fiber cable holder according to claim 1,
The optical fiber cable holder according to claim 1, wherein the pair of arm portions are formed so that a side of the latch portion opens when the latch is released. The optical fiber cable holder according to claim 1 or 2, wherein
The at least one arm portion includes a latch release claw provided on the latch portion,
The optical fiber cable holder, wherein the latch can be released by moving the latch release claw in the longitudinal direction. A plurality of drawers having an optical connector connection,
An optical wiring unit having an optical fiber cable holder for holding an optical fiber cable connected to the optical connector connecting portion, the optical wiring unit being provided in the drawer portion,
The optical fiber cable holder includes a pair of arm portions, and the pair of arm portions holds a plurality of the optical fiber cables so as to surround them.
The pair of arm portions are formed so that the plurality of optical fiber cables are held side by side in a predetermined direction,
At least one of the pair of arm portions is
A deformable portion capable of elastic deformation,
A latch portion provided at an end portion of the deformable portion in the predetermined direction, the arm portion latching with another arm portion;
The latch portion can be released by moving in the longitudinal direction of the optical fiber cable surrounded by the pair of arm portions with respect to the other arm portion ,
The optical wiring unit , wherein the distance between the pair of arm portions gradually increases in the predetermined direction when the latch is released . The optical wiring unit according to claim 4,
The pair of arm portions are arranged in the same direction as the direction in which the plurality of drawer portions are arranged,
The optical wiring unit is formed so that the side of the latch portion is opened when the latch is released.

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