JP5894951B2 - Containment case - Google Patents

Description

  The present invention relates to a storage case.

  An aerial optical closure is known as an accommodating case for accommodating an optical connection portion between an aerial optical fiber cable and an optical drop cable branched from the optical fiber cable (see, for example, Patent Documents 1 to 3). Conventional optical closures generally have a structure that accommodates an optical connection portion between an optical fiber of an optical fiber cable and an optical fiber of an optical drop cable together with an extra length.

  In addition, a housing case is known that houses an optical connection unit that connects an optical drop cable branched from an optical closure and the other end of the optical drop cable that has one end reaching the user's house (for example, Patent Document 4).

JP 2009-237340 A JP 2010-262115 A JP 2012-78411 A JP 2011-59607 A

  When an external force is applied to the optical fiber cable extending from the housing case, the external force is transmitted to the optical connection portion housed in the housing case, and the optical connection portion may be damaged. For this reason, it is desirable to provide a gripping part for gripping the optical fiber cable outside the optical connection part inside the housing case.

  However, if the outer shape of the optical fiber cable does not match the grip portion, the grip portion may not be able to grip the optical fiber cable sufficiently, or the optical fiber cable may not enter the grip portion.

  An object of this invention is to provide the storage case which can hold | grip the optical fiber cable of a different shape.

A main invention for achieving the above object includes: a housing portion that houses an optical connection portion to which an optical fiber cable is connected; an introduction port that introduces the optical fiber cable from the outside to the inside; the housing portion and the introduction port ; A holding portion for holding the optical fiber cable between the first holding portion and the first light for holding the first optical fiber cable having a predetermined outer shape. A second gripping part for gripping a second optical fiber cable having a different external shape from the fiber cable; and an inner branch part for guiding the optical fiber cable extending from the housing part to the first gripping part or the second gripping part. , to characterized in that it has an outer branching section for guiding the light the first grip the fiber cable or the second grip portion is introduced into the one of said inlet end of said housing case A housing case.

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

  According to the present invention, it is possible to grip optical fiber cables having different shapes.

1A and 1B are perspective views of the housing case 5 of the first embodiment. FIG. 1A is a view of the housing case 5 as viewed obliquely from above. FIG. 1B is a view of the housing case 5 as viewed from obliquely below. FIG. 2A is a perspective view of the storage case 5 in an opened state. FIG. 2B is an exploded view of the housing case 5 of FIG. 2A. 3A and 3B are explanatory views of the case body 7 and the fixture 50. FIG. FIG. 3A is an explanatory diagram when the fixture 50 is in a fixed position. FIG. 3B is an explanatory diagram when the fixture 50 is in the release position. FIG. 4 is a view showing the attachment portion 32 of the case body 7 with the fixing member 50 removed. 5A to 5C are perspective views of the fixture 50. FIG. FIG. 5A is a view of the fixture 50 as viewed from the upper left. FIG. 5B is a view of the fixture 50 as viewed from the lower right. FIG. 5C is a view of the fixture 50 as seen from the upper right. FIG. 6 is a perspective view of the fixture 50 from an angle at which the support line fixing portion 52 can be seen. 7A and 7B are explanatory diagrams for explaining the relationship between the attachment portion 32 and the fixture 50. FIG. 7A is a view of the housing case 5 as viewed from the left side. FIG. 7B is a view of the housing case 5 as seen from the rear side. FIG. 8 is an explanatory diagram of the internal structure of the case body 7. FIG. 9A is a front view of the grip 20 that grips the optical fiber cable 3. FIG. 9B is an explanatory diagram with the optical fiber cable 3 of FIG. 9A removed. FIG. 10 is a flowchart showing a processing procedure of an operator who uses the storage case 5. FIG. 11A is an explanatory diagram of a state before work. FIG. 11B is an explanatory diagram of a state after the work. 12A and 12B are explanatory diagrams of another method of using the housing case 5. FIG. FIG. 13A is a front view of the grip 20 of the second embodiment. FIG. 13B is an explanatory diagram with the optical fiber cable 3 of FIG. 13A removed. 14A and 14B are perspective views of the housing case 5 of the third embodiment. FIG. 14A is an explanatory diagram when the fixture 150 of the third embodiment is in a fixed position. FIG. 14B is an explanatory diagram when the fixture 150 of the third embodiment is in the release position. FIG. 15 is a perspective view of the fixture 150 of the third embodiment. FIG. 16A and FIG. 16B are explanatory diagrams of another method of using the housing case 5 of the third embodiment. FIG. 16A is a perspective view of the housing case 5 of the third embodiment fixed to a wall. FIG. 16B shows a state seen from the wall side through the wall. FIG. 17 is a perspective view of the state of installation of the wall fixing jig 62. FIG. 18 is a perspective view of the housing case 105 of the fourth embodiment. FIG. 19 is a perspective view of the housing case 105 of the fourth embodiment with the cover 106 opened. FIG. 20 is a perspective view of the housing case 105 according to the fourth embodiment with the case body 107 opened. 21A and 21B are explanatory diagrams of the structure around the hook portion 131. FIG. FIG. 21A is an explanatory diagram showing a state in which the support line 2 is placed in the support line fixing portion 152. FIG. 21B is an explanatory diagram of a state in which the support line 2 is removed. 22A and 22B are explanatory diagrams of the internal structure of the case main body 107. FIG. 23A and 23B are perspective views of the gripping body 120B. FIG. 23A is a perspective view of the holding body 120B viewed from the side into which the optical fiber cable is inserted. FIG. 23B is a perspective view of the gripping body 120B viewed from the opposite side of FIG. 23A.

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

An accommodating case having an accommodating portion for accommodating an optical connecting portion to which an optical fiber cable is connected, and a grasping portion for grasping the optical fiber cable between the accommodating portion and the outside, wherein the grasping portion is a predetermined case A first gripping part for gripping the first optical fiber cable having the outer shape, a second gripping part for gripping the second optical fiber cable having a different outer shape from the first optical fiber cable, and extending from the housing part The housing case is characterized by having a branching section for guiding the optical fiber cable to the first gripping section or the second gripping section.
According to such a storage case, the external force is not easily transmitted to the optical connection portion even when an external force is applied to the optical fiber cable outside the storage case, and the optical fiber cable having a different shape is gripped by the grip portion. Is possible.

  The gripping part is a branching part different from the branching part, and guides the optical fiber cable introduced into the inside from an introduction port at an end of the housing case to the first gripping part or the second gripping part. It is preferable to further have a branching portion. Thereby, the number of inlets at the end of the storage case can be reduced, and water is less likely to enter the storage case.

  The grip portion has a ridge along a direction perpendicular to the direction of the optical fiber cable, and is configured to insert the optical fiber cable from a direction along the ridge when the optical fiber cable is gripped. It is desirable that This facilitates the work of gripping the optical fiber cable by the grip portion even though the gripped optical fiber cable is difficult to shift.

  As for the above-mentioned grasping part, it is desirable for the crevice to be formed in the side where the above-mentioned optical fiber cable is inserted. Thereby, the operation | work which inserts an optical fiber cable in a holding part becomes easy.

  The housing case has a first case and a second case that can be opened and closed, and the grip portion is provided in one of the first case and the second case, and the first case and the second case It is desirable that a cable presser for pressing the optical fiber cable gripped by the gripping part is formed on the other side. Thereby, an optical fiber cable becomes difficult to remove | deviate from a holding part.

  It is preferable that the first grip portion and the second grip portion bend and grip the optical fiber cable. This makes it difficult for the optical fiber cable to come off from the grip portion, and makes it difficult for water that has entered from the outside through the optical fiber cable to reach the accommodating portion.

  It is desirable that the grip portion is configured by housing the grip body formed with the first grip portion, the second grip portion, and the second branch portion in the grip body housing portion of the housing case. Thereby, it can comprise so that a holding body can be attached or detached with respect to a storage case.

  The storage case includes an openable / closable case main body having the storage section and the gripping section, and a fixing tool that is slidably provided on the case main body and includes a support wire fixing section and a case fixing section. When the fixture is slid to place the fixture in a fixed position, the case main body is fixed to the support line by the support line fixing portion, and the case main body is fixed in a closed state by the case fixing portion. desirable. Thereby, an operator's work becomes easy.

=== First Embodiment ===
<Overall configuration>
1A and 1B are perspective views of the housing case 5 of the first embodiment. FIG. 1A is a view of the housing case 5 as viewed obliquely from above. FIG. 1B is a view of the housing case 5 as viewed from obliquely below. FIG. 2A is a perspective view of the storage case 5 in an opened state. FIG. 2B is an exploded view of the housing case 5 of FIG. 2A.

  1A and 1B show a state in which the housing case 5 is closed and fixed to the support line 2, and in the following description, this state may be referred to as a “closed state” or a “fixed state”. In addition, a state where the housing case 5 is opened as shown in FIG. 2A may be referred to as an “open state”.

  In the following description, each direction is defined as shown in FIGS. 1A and 1B. That is, the direction parallel to the support line 2 or the optical fiber cable 3 is set as “left-right direction”, and the right hand side is viewed from the side where the housing case 5 is opened (the side of the fastener 42) (viewed from the operator side). “Right” and the left hand side “Left”. Also, the direction in which the support line 2 and the optical fiber cable 3 are arranged is “up-down direction”, the support line 2 side is “up”, and the optical fiber cable 3 side is “down”. Also, the direction perpendicular to the left-right direction and the up-down direction is referred to as “front-rear direction”, the side of the fastener 42 as viewed from the housing case 5 is referred to as “front”, and the opposite side (the hinge part 41 side) is referred to as “rear” . As will be described later, the support wire 2 (or the optical fiber cable 3) is not necessarily installed horizontally, and the vertical direction in the figure does not coincide with the direction of gravity (see FIG. 11B).

  The support wire 2 is initially connected to the optical fiber cable 3 as the optical drop cable 1. An operator branches the support line 2 of the optical drop cable 1 and the optical fiber cable 3 using a tool, and the housing case 5 is attached to the branched support line 2.

  The optical fiber cable 3 extending from the left side of the housing case 5 is, for example, the optical fiber cable 3 of the optical drop cable 1 branched from the optical closure. The optical fiber cable 3 extending from the right side of the housing case 5 is, for example, the optical fiber cable 3 of the optical drop cable 1 that reaches one end of the user's house. The optical fiber cable 3 of one optical drop cable 1 and the optical fiber cable 3 of the other optical drop cable 1 are connected by an optical connection unit 4. The optical fiber cable 3 may be a single core or two or more cores.

  The optical connection part 4 is a structure that protects the optical connection point and the bare optical fiber in the vicinity thereof without exposing them. In this case, the optical fiber cable 3 is attached with an optical fiber cable connector that is assembled in the field, and the optical fibers of the optical fiber cable 3 are connected to each other through the optical connector. An optical connection unit 4 is configured. More specifically, the optical connection unit 4 is configured by connecting a plug and socket of an FAS (Field Assembly Small) connector. However, an optical connector may be configured by attaching an SC connector, for example, to the end of each optical fiber cable 3 and connecting the SC connectors via an adapter. Moreover, you may comprise an optical connection part by connecting optical fibers using a mechanical splice instead of using an optical connector.

  The housing case 5 is a case for housing the optical connection portion 4 connecting the optical fiber cables 3 and protecting the optical connection portion 4 from the outside. The housing case 5 includes a case body 7 that can be opened and closed to house the optical connection portion 4, and a fixture 50 that is slidably provided on the case body 7.

<Case body 7 and fixture 50>
The case body 7 is a member that can be opened and closed to accommodate the optical connection portion 4. The case body 7 includes a first case 7A and a second case 7B. A waterproof housing 10 and a grip 20 are formed inside the case body 7. The internal structure of the waterproof housing 10 and the grip 20 will be described later.

  The case body 7 is formed with a hinge portion 41 and a fastener 42. The hinge part 41 is a part that allows the case body 7 to be opened and closed. The hinge part 41 includes a first hinge part 41A of the first case 7A and a second hinge part 41B of the second case 7B. Instead of forming the first hinge part 41A and the second hinge part 41B, the first case 7A and the second case 7B can be integrally formed via a thin hinge part. The fastener 42 is a part for closing the case body 7. The fastener 42 includes a first fastener 42A of the first case 7A and a second fastener 42B of the second case 7B. The housing case 5 can be closed by the fastener 42. However, since the housing case 5 may be opened only by the fasteners 42, the housing case 5 is finally fixed in a closed state using the fixing tool 50.

A hook portion 31 is formed in the first case 7A. In other words, the hook portion 31 is formed on the upper side of the case body 7. The hook part 31 is a part for hooking the support wire 2 of the optical fiber cable 3. It is possible to attach the housing case 5 to the support line 2 by hooking the support line 2 on the hook portion 31. As will be described later, the worker performs an operation of housing the optical connection unit 4 in the housing unit while the support wire 2 is hooked on the hook unit 31.
In a state where the support line 2 is simply hooked on the hook portion 31, the storage case 5 is not fixed. In this state, the storage case 5 can move along the support line 2. In order to fix the housing case 5 to the support wire 2, it is necessary to fix the support wire 2 with the fixture 50.

  3A and 3B are explanatory views of the case body 7 and the fixture 50. FIG. FIG. 3A is an explanatory diagram when the fixture 50 is in a fixed position. FIG. 3B is an explanatory diagram when the fixture 50 is in the release position.

  As shown in FIGS. 3A and 3B, the fixture 50 is provided to be slidable in the front-rear direction with respect to the case body 7. When the fixture 50 is slid rearward to bring the fixture 50 into a fixed position, the case body 7 is fixed to the support wire 2 hooked on the hook portion 31 and the case body 7 is fixed in a closed state. (See also FIG. 1A).

FIG. 4 is a view showing the attachment portion 32 of the case body 7 with the fixing member 50 removed.
The attachment part 32 is a part for attaching the fixture 50 to the first case 7A. The attachment portion 32 includes a case side guide portion 33, a restriction portion 34, and a raised portion 35. The case-side guide portion 33 is a part that guides the fixture 50 so as to be slidable in the front-rear direction. Since the case side guide part 33 is inclined so that the left and right side surfaces protrude inward as the upper side (see also FIG. 7B), the case side guide part 33 also has a function of preventing the fixture 50 from coming out upward. The restricting part 34 is a part that restricts the movement range of the front side of the fixture 50. The restricting portion 34 also has a function of preventing the fixture 50 from coming off from the front side of the first case 7A. The raised portion 35 is a portion raised upward from the first case 7 </ b> A, and also has a function of regulating the movement range on the rear side of the fixture 50. The raised portion 35 has a locking portion 35A and a pressing surface 35B. 35 A of latching | locking parts are parts which the engaging part 54 of the fixing tool 50 catches, and fixes the fixing tool 50 in a fixing position. The holding surface 35 </ b> B is a surface on the front side of the raised portion 35, and is a surface that sandwiches the support line 2 with the fixture 50 and fixes the support line 2.

5A to 5C are perspective views of the fixture 50. FIG. FIG. 5A is a view of the fixture 50 as viewed from the upper left. FIG. 5B is a view of the fixture 50 as viewed from the lower right. FIG. 5C is a view of the fixture 50 as seen from the upper right.
The fixture 50 is a member that is slidably provided on the case body 7 and that fixes the support wire 2 and also fixes the case body 7 in a closed state. The fixture 50 includes a movable side guide part 51, a support line fixing part 52, and a case fixing part 53.

  The movable guide 51 is a part that guides the fixture 50 so as to be slidable in the front-rear direction. When the fixture 50 is attached to the case body 7, the movable side guide portion 51 is disposed on the case side guide portion 33 of the case body 7 and is guided in the front-rear direction by the case side guide portion 33 of the case body 7. The rear side of the movable side guide portion 51 is divided into two, and the raised portion 35 of the case body 7 is disposed between the two sides. In other words, a recess for avoiding interference with the raised portion 35 of the case body 7 is formed between the movable side guide portions 51 arranged side by side. A groove 51 </ b> A is formed along the front-rear direction on the front lower surface of the movable guide 51. The restriction portion 34 of the case main body 7 enters the groove 51A and the rear edge of the groove 51A and the restriction portion 34 come into contact with each other, whereby the movement range of the front side of the fixture 50 is restricted.

FIG. 6 is a perspective view of the fixture 50 from an angle at which the support line fixing portion 52 can be seen.
The support line fixing part 52 is a part for fixing the support line 2. The support line fixing part 52 sandwiches the support line 2 between the pressing surface 35B of the raised part 35 and fixes the support line 2 in the front-rear direction. The support line fixing portion 52 is a concave portion whose rear side is opened so that the support line 2 can be received from the rear side. The support line fixing part 52 clamps the support line 2 with the inner surfaces facing in the vertical direction, and fixes the support line 2 in the vertical direction.

  A protrusion 52A is formed on the surface (the surface facing the rear side) of the support line fixing portion 52 that faces the pressing surface 35B of the raised portion 35. When the support wire 2 is sandwiched between the support wire fixing portion 52 and the pressing surface 35B of the case body 7 with the fixing device 50 in the fixed position, the protrusion 52A bites into the support wire 2 (the protrusion 52A becomes the support wire 2). And the support wire 2 is prevented from shifting.

  On the inner surface of the support line fixing portion 52 facing the vertical direction, a support line protrusion 52B is formed. The support line protrusions 52 </ b> B are streak-like protrusions, and are portions that suppress the support line 2 from being displaced from the support line fixing part 52. Since the support line protrusions 52B are formed along the front-rear direction, the support line 2 received by the support line fixing portion 52 is less likely to be displaced in the left-right direction (the direction perpendicular to the support line protrusions 52B). On the other hand, since the support line ridges 52B are formed along the moving direction (front-rear direction) of the fixture 50, when the fixture 50 slides toward the fixing position, the support line is formed from the rear side of the fixture 50. It is easy to receive 2 in the support wire fixing portion 52. In addition, since there exists the protruding part 35 (pressing surface 35B) of the case main body 7 in the back side of the support line 2, the support line 2 received by the support line fixing | fixed part 52 does not come out from the back side.

  7A and 7B are explanatory diagrams for explaining the relationship between the attachment portion 32 and the fixture 50. FIG. 7A is a view of the housing case 5 as viewed from the left side. FIG. 7B is a view of the housing case 5 as seen from the rear side.

  As shown in FIG. 7A, when the storage case 5 is viewed from the left side (direction parallel to the support line 2), the pressing surface 35B of the case body 7 and the fixing tool 50 are located more than the space where the hook part 31 hooks the support line 2. The space surrounded by the support line fixing portion 52 is configured to be narrow. The space in which the hook part 31 hooks the support line 2 is wider because the storage case 5 can be moved along the support line 2 when the storage case 5 is attached to the support line 2 with only the hook part 31. It is to make it. On the other hand, the space surrounded by the pressing surface 35B of the case body 7 and the support line fixing portion 52 of the fixture 50 is narrow because the case body 7 becomes the support line 2 when the fixture 50 is in the fixed position. This is to fix completely.

  7A, when the storage case 5 is viewed from the left side (in a direction parallel to the support line 2), the holding surface 35B of the case body 7 is located on the inner side of the space where the hook part 31 hooks the support line 2. A space surrounded by the support wire fixing portion 52 of the fixture 50 is located. Accordingly, if the fixing tool 50 is slid to the fixing position while the support wire 2 is hooked on the hook portion 31, the support wire 2 can be fixed by the pressing surface 35B and the support wire fixing portion 52 as they are. .

  As shown in FIG. 7B, when the housing case 5 is viewed from the rear side, the two protrusions 52A of the support line fixing portion 52 are arranged so as to sandwich the raised portion 35 from the left and right directions (the right side of the raised portion 35 and One on the left side). Thereby, when the fixing tool 50 is set to the fixed position, the support line 2 is slightly curved by the pressing surface 35 </ b> B and the two protrusions 52 </ b> A, and the support line 2 is not easily displaced in the left-right direction with respect to the housing case 5.

  The case fixing part 53 is a part for fixing the case body 7 in a closed state (see FIGS. 5A, 5B and 6). The case fixing portion 53 is disposed on the front side of the fixture 50. The case fixing portion 53 is formed with a window portion 53A (opening), and when the fixing tool 50 is set to the fixing position, the fixing convex portion 43 of the second case 7B enters the inside of the window portion 53A (see FIG. 3A). ). Accordingly, the second case 7B is fixed to the first case 7A provided with the fixing tool 50, and the first and second fasteners 42A and 42B of the case body 7 are prevented from being detached, and the case body 7 Is prevented from opening.

  The fixture 50 further has an engaging portion 54. The engaging portion 54 is a portion that is hooked on the locking portion 35 </ b> A of the case main body 7 and fixes the fixture 50 at a fixed position. Here, the engaging portion 54 is an opening (window portion) formed on the upper surface of the support line fixing portion 52. However, instead of forming the engaging portion 54 in the support line fixing portion 52, the engaging portion 54 and the support line fixing portion 52 can be configured separately. Since the fixing tool 50 is fixed at the fixing position by the engaging portion 54 (and the locking portion 35A of the case main body 7), the fixing state by the fixing tool 50 (fixing of the support wire 2 and fixing of the case main body 7 in the closed state). Is maintained.

<Internal structure of case body 7>
FIG. 8 is an explanatory diagram of the internal structure of the case body 7.
A waterproof housing 10 and a grip 20 are formed inside the case body (see also FIG. 2A). Further, the case main body 7 is formed with a drainage hole 45 communicating from the inside to the outside (see also FIGS. 1A and 1B).

Waterproof housing 10
The waterproof housing portion 10 is a housing portion for housing the optical connection portion 4 in a watertight manner, and includes a first housing portion 11 of the first case 7A and a second housing portion 15 of the second case 7B.

  The 1st accommodating part 11 is a site | part which is formed in the 1st case 7A and comprises the waterproof accommodating part 10 with the 2nd accommodating part 15 of the 2nd case 7B. The first housing part 11 includes a first housing wall part 12 and a support part 13. The first housing wall 12 is a portion (wall) surrounding the housing space that houses the optical connection portion 4. On the left and right wall portions of the first housing wall portion 12, passage grooves 12A for passing the optical fiber cable 3 are formed inside and outside the housing portion. The support part 13 is a part for supporting the optical connection part 4 (here, a plug or a socket) accommodated in the first accommodation part 11, and a part (contact part) protruding inward from the first accommodation wall part 12. It is.

  The 2nd accommodating part 15 is a site | part which is formed in the 2nd case 7B and comprises the waterproof accommodating part 10 with the 1st accommodating part 11 of the 1st case 7A. The second housing portion 15 is formed by a second housing wall portion 16 that surrounds a housing space that houses the optical connection portion 4. The second accommodating portion 15 does not have the support portion 13 like the first accommodating portion 11, and the second accommodating portion 15 is formed shallower than the first accommodating portion 11. For this reason, when an operator installs the optical connection portion 4 in the opened case body 7, the optical connection portion 4 is put into the first housing portion 11.

  A waterproof seal for waterproofing the housing portion (waterproof housing portion 10) of the optical connection portion 4 is attached to the outer periphery of the waterproof housing portion 10. The waterproof seal includes a first packing 17 and a second packing 18 (see also FIGS. 2A and 2B). The first packing 17 is attached to the outer periphery of the first housing part 11. The second packing 18 is attached to the outer periphery of the second housing portion 15.

  Grooves 19 for passing the optical fiber cable 3 are formed on the left and right sides of the first packing 17 (see also FIGS. 2A and 2B). Grooves 19 for passing the optical fiber cable 3 are also formed on the left and right sides of the second packing 18. When the groove 19 of the first packing 17 and the groove 19 of the second packing 18 are combined, a path smaller than the outer shape of the optical fiber cable 3 (first optical fiber cable having a small outer shape to be described later) is formed. The groove 19 of the first packing 17 and the groove 19 of the second packing 18 are in watertight contact with the outer periphery of the optical fiber cable 3. Here, the first packing 17 and the second packing 18 have the same shape, but may have different shapes (for example, the second packing 18 is formed shallower than the first packing 17).

・ Grip part 20
FIG. 8 shows a state in which the grip 20 is viewed from an oblique direction. FIG. 9A is a front view of the grip 20 that grips the optical fiber cable 3. FIG. 9B is an explanatory diagram with the optical fiber cable 3 of FIG. 9A removed.

  The grip 20 is a part that grips the optical fiber cable 3 between the waterproof housing 10 and the outside. The grip portion 20 is formed on the first case 7 </ b> A and is formed adjacent to the left and right of the first housing portion 11. Even if an external force (tension) is applied to the optical fiber cable 3 outside the housing case 5 by the gripping part 20 gripping the optical fiber cable 3 outside the optical connection part 4, the external force is transmitted to the optical connection part 4. Is suppressed.

  The grip part 20 of the present embodiment includes a first grip part 21, a second grip part 22, and an inner branch part 23. The 1st holding part 21 is a site | part (passage | path) which hold | grips the 1st optical fiber cable of predetermined | prescribed external shape (for example, thickness 1.6mm, width 2.0mm). The 2nd holding part 22 is a site | part (passage | path) which hold | grips the 2nd optical fiber cable of the external shape (for example, thickness 2.0mm, width 3.1mm) different from a 1st optical fiber cable. The inner branch portion 23 is a portion that guides the optical fiber cable 3 extending from the first housing portion 11 to the first grip portion 21 or the second grip portion 22.

  The holding part 20 has a pair of outer walls 25 and a partition wall 26 arranged between the outer walls 25. The inner surface of one outer wall 25 and one outer surface of the partition wall 26 face each other with an interval (here, about 1.6 mm) corresponding to the thickness of the first optical fiber cable, so that the first grip portion 21 is Is formed. Further, the second gripping portion 22 is configured such that the inner surface of the other outer wall 25 and the other outer surface of the partition wall 26 are opposed to each other with an interval corresponding to the thickness of the second optical fiber cable (here, about 2.0 mm). Is formed. That is, the gap between the outer wall 25 and the partition wall 26 becomes a path of the optical fiber cable 3. The dimension of the partition wall 26 in the left-right direction is shorter than the dimension of the outer wall 25 in the left-right direction, the partition wall 26 is not formed at a position close to the first housing portion 11, and the outer walls 25 have the thickness of the optical fiber cable 3. The inner branch portion 23 is formed by facing each other with a corresponding interval.

In this embodiment, since the 1st holding part 21 and the 2nd holding part 22 are formed in the holding part 20, it is possible to fix the optical fiber cable 3 from which an external shape differs. Assuming that the housing case 5 has only the first gripping portion 21 suitable for gripping the first optical fiber cable having a small outer shape, the operation of inserting the second optical fiber cable having the large outer shape into the first gripping portion 21. It becomes difficult. On the other hand, if the housing case 5 includes only the second gripping portion 22 suitable for gripping the second optical fiber cable having a large outer shape, the first optical fiber cable having a small outer shape is provided with the second gripping portion 22. In this case, the external connection force is easily applied to the optical connection portion 4 and the gap between the first optical fiber cable and the second grip portion 22 is large, so that water easily enters from the outside.
In the present embodiment, since the inner branch portion 23 is formed in the grip portion 20, the optical fiber cable 3 of the optical connecting portion 4 housed in the first housing portion 11 is passed through the common passage groove 12A. It can be guided to 20 first grip portions 21 or second grip portions 22. For this reason, the optical connecting portion 4 can be accommodated in the first accommodating portion 11 regardless of the outer shape of the optical fiber cable 3 extending from the optical connecting portion 4.

  In addition, the grip portion 20 further includes an outer branch portion 24. The outer branch portion 24 is a portion that guides the optical fiber cable 3 introduced into the inside from the inlets at the left and right ends of the housing case 5 to the first grip portion 21 or the second grip portion 22. The dimension of the partition wall 26 in the left-right direction is shorter than the dimension of the outer wall 25 in the left-right direction, the partition wall 26 is not formed at a position near the introduction port, and the distance between the outer walls 25 corresponds to the thickness of the optical fiber cable 3. The outer branch portion 24 is formed by facing each other with a gap. By forming the outer branch portion 24, there is one introduction port for introducing the optical fiber cable 3 from the outside to the inside of each of the left and right ends of the housing case 5, so that water does not easily enter the housing case 5. Become. If the outer branch 24 is not formed and the first optical fiber cable inlet and the second optical fiber cable inlet are separately formed, the side without the optical fiber cable 3 is formed. Water will easily enter from the inlet.

  Cable ridges 27 are formed on the inner surface of the outer wall 25 and the outer surface of the partition wall 26. The cable ridge 27 is a streak-like convex part, and is a part that suppresses the optical fiber cable 3 from being displaced from the grip part 20. Since the cable ridges 27 are formed along the vertical direction, the optical fiber cable 3 held by the holding portion 20 is less likely to be displaced in the left-right direction (a direction perpendicular to the cable ridges 27). On the other hand, since the cable ridges 27 are formed along the vertical direction, it is easy to insert the optical fiber cable 3 into the grip portion 20 (insert the optical fiber cable 3 between the outer wall 25 and the partition wall 26). It is. However, when the second case 7B is closed, the second case 7B closes the grip portion 20, so that the optical fiber cable 3 gripped by the grip portion 20 does not come out downward.

  As shown in FIG. 9B, the first gripping part 21 and the second gripping part 22 are curved to the opposite side to the partition wall 26 side. The first gripping portion 21 is curved to the rear side (lower side in the drawing), and the second gripping portion 22 is curved to the front side (upper side in the drawing). As a result, the first grip 21 or the second grip 22 bends and grips the optical fiber cable 3 (see FIG. 9A). As a result, the optical fiber cable 3 is unlikely to come off from the gripping portion 20, and water that has entered from the outside through the optical fiber cable 3 is unlikely to reach the waterproof housing portion 10.

  A concave portion 28 is formed in the outer wall 25 and the partition wall 26. The recess 28 is a concave curved surface formed at the edge of the outer wall 25 and the partition wall 26 (edge on the side into which the optical fiber cable 3 is inserted). By forming the recess 28 in the grip 20, an operator can easily insert the optical fiber cable 3 into the grip 20.

  The second case 7B is formed with a cable presser 29A protruding along the front-rear direction. The cable presser 29A is formed at a position facing the first gripping part 21 or the second gripping part 22 when the second case 7B is closed. When the second case 7B is closed, the cable presser 29A presses the optical fiber cable 3 toward the grip portion 20, and the optical fiber cable 3 is deformed so as to bite into the cable ridges 27. For this reason, the optical fiber cable 3 gripped by the gripping portion 20 is more difficult to come off.

  In addition, an outer wall press 29B is formed on the second case 7B so as to face the outer wall 25 of the first case 7A. The outer wall retainer 29B has an inclined surface that comes into contact with the outer wall 25. When the second case 7B is closed, the outer wall 25 receives a force from the inclined surface of the outer wall retainer 29B, and the outer wall 25 is pushed toward the partition wall 26. It is. As a result, the cable ridges 27 on the outer wall 25 bite into the optical fiber cable 3, so that the optical fiber cable 3 gripped by the grip portion 20 is further less likely to come off. Since the outer wall press 29B suppresses the outer wall 25 from being deformed to the outside, the gripping force of the gripper 20 can be maintained.

・ Drain hole 45
A drainage hole 45 leading to the outside is formed in a space formed around the grip 20 (see FIGS. 1A and 1B). As a result, the water that has entered the housing case 5 and has not been able to enter the waterproof housing 10 by the first packing 17 and the second packing 18 is drained to the outside without accumulating inside. In addition, drain holes 45 (drain holes 45 of the first case 7A) are formed in the corners of the left and right end portions of the first case 7A and the corners in the vicinity of the first packing 17 (see FIGS. 1A and 9B). By forming drainage holes 45 (drainage holes 45 of the second case 7B) at opposite locations of the second case 7B (see FIG. 1B), any corner of the space formed around the grip 20 Also, a drain hole 45 is formed. Thereby, even if the storage case 5 is attached obliquely, water is discharged from one of the drain holes 45, so that water does not accumulate inside the storage case 5.

<How to use the housing case 5>
FIG. 10 is a flowchart showing a processing procedure of an operator who uses the storage case 5. FIG. 11A is an explanatory diagram of a state before work. FIG. 11B is an explanatory diagram of a state after the work.

  As shown in FIG. 11A, the user's house is located near the utility pole. One end of the optical drop cable 1 on the user's home side is fixed on the user's home side, and the other end is fixed on the utility pole. For this reason, the optical drop cable 1 on the user's home side is installed obliquely. Another optical drop cable 1 is branched from the optical closure.

  The operator branches the support line 2 and the optical fiber cable 3 of the optical drop cable 1 on the user's home side (S001).

  Next, the worker hooks the hook portion 31 of the housing case 5 on the support wire 2 of the optical drop cable 1 on the user's home side, and attaches the housing case 5 to the support wire 2 (S002). At this stage, the storage case 5 is attached to the support line 2 so as to be movable along the support line 2 (temporary fixing). For this reason, the operator attaches the storage case 5 to the support line 2 with the fixture 50 of the storage case 5 in the release position (see FIG. 3B). At this time, the storage case 5 may be either in an open state or a closed state. However, if the housing case 5 is attached in the open state, the optical connector can be attached to the optical fiber cable 3 with reference to the position of the waterproof housing portion 10 of the housing case 5 in S003 described later.

  Next, the worker connects the optical fiber cable 3 on the optical closure side and the optical fiber cable 3 on the user's home side to configure the optical connection unit 4 (S003). At this time, the operator pulls out the optical fiber from the optical fiber cable 3, attaches a field assembly type outer-grip optical connector to the end of the optical fiber cable 3, and connects the optical fiber cables 3 to each other via the optical connector. Are connected to each other to configure the optical connection unit 4. Here, the worker attaches a FAS connector plug to the end of the optical fiber cable 3 on the optical closure side, attaches a FAS connector socket to the end of the optical fiber cable 3 on the user's home side, and attaches the plug and socket to the end. The optical connection unit 4 is configured by coupling. However, the FAS connector plug and socket mounting positions may be reversed.

  In the present embodiment, when the worker attaches the optical connector at the site (S003), the storage case 5 is already temporarily fixed to the support wire 2 (S002). Thus, the lead position of the optical fiber cable 3 can be determined. Since the optical connectors of the two optical fiber cables 3 (the optical fiber cable 3 on the optical closure side and the optical fiber cable 3 on the user's home side) are attached with reference to a common position (position of the housing case 5), the remainder of the optical fiber cable 3 The optical connection unit 4 can be configured without requiring a long process.

  In addition, if the storage case 5 attached to the support line 2 is in an open state, the operator can confirm the position of the waterproof storage portion 10 inside the storage case 5, so that the waterproof storage for storing the optical connection portion 4 is provided. The lead position of the optical fiber cable 3 can be determined using the position of the portion 10 as a guide. That is, if the housing case 5 that is temporarily fixed is in an open state, the operation of configuring the optical connection unit 4 without requiring extra length processing of the optical fiber cable 3 becomes more accurate.

  Next, the worker moves the storage case 5 along the support line 2 to a position where the optical connection unit 4 can be stored (S004). Even if the optical connection portion 4 is configured with the position of the storage case 5 as a guide, it is difficult to configure the optical connection portion 4 so as to exactly match the storage position (since some position error may occur). ) The operator moves the housing case 5 along the support line 2 in accordance with the position of the completed optical connecting portion 4. Since the storage case 5 is just hooked on the hook portion 31 (because the storage case 5 is not yet closed), the operation of moving the temporarily fixed storage case 5 along the support line 2 is easy. is there.

  Next, an operator accommodates the optical connection part 4 in the accommodation case 5 (S005). In this work, the operator puts the optical connecting portion 4 in the first housing portion 11 of the first case 7A of the housing case 5 and causes the grip portion 20 of the first case 7A to grip the optical fiber cable 3, The second case 7B will be closed. Since the support part 13 is formed in the 1st accommodating part 11, after inserting the optical connection part 4 in the 1st accommodating part 11, until the 2nd case 7B is closed, the optical connecting part 4 is the 1st accommodation. It is difficult to come off from the part 11.

  When putting the optical connection part 4 into the first housing part 11, the operator inserts the optical fiber cable 3 into the grip part 20. At this time, the operator inserts the optical fiber cable 3 into the first grip 21 or the second grip 22 according to the shape of the optical fiber cable 3. Since there is a notation of the thickness of the optical fiber cable 3 in accordance with the positions of the first gripping part 21 and the second gripping part 22 inside the first case 7A (see FIG. 9B), the operator refers to this notation. Thus, the first grip portion 21 or the second grip portion 22 is selected.

  When an operator inserts the optical fiber cable 3 into the grip 20, the operator places the optical fiber cable 3 between the outer wall 25 and the partition wall 26, pushes the optical fiber cable 3 toward the grip 20 with a finger, and The optical fiber cable 3 is inserted between the wall 26 and the partition wall 26. Since the cable ridges 27 of the grip portion 20 are formed along the direction in which the optical fiber cable 3 is inserted, it is easy to insert the optical fiber cable 3 into the grip portion 20. Moreover, since the recessed part 28 is formed in the holding part 20, it is easy for an operator to insert the optical fiber cable 3 to the back of the holding part 20.

  When the optical fiber cable 3 is inserted into the grip part 20, the optical fiber cable 3 is wired to the channel groove 12 </ b> A of the first housing part 11 and the groove 19 of the first packing 17 by the inner branch part 23 of the grip part 20. become. In addition, when the optical fiber cable 3 is inserted into the grip portion 20, the optical fiber cable 3 is wired to the introduction port by the outer branch portion 24 of the grip portion 20.

  And an operator puts the optical connection part 4 in the 1st accommodating part 11 of the 1st case 7A of the accommodating case 5, makes the grasping part 20 of the 1st case 7A grasp the optical fiber cable 3, and then the second Case 7B is closed. When the second case 7 </ b> B is closed, the optical connection portion 4 is accommodated in the waterproof accommodation portion 10 of the accommodation case 5.

  When the second case 7B is closed, the second case 7B closes the grip portion 20, so that the optical fiber cable 3 gripped by the grip portion 20 does not come out downward. In addition, since the cable holder 29A is formed in the second case 7B, when the second case 7B is closed, the cable holder 29A presses the optical fiber cable 3 toward the grip portion 20, and the optical fiber cable 3 The optical fiber cable 3 is further prevented from being pulled out by being deformed so as to bite into the cable ridges 27. Further, since the outer wall press 29B is formed on the second case 7B, when the second case 7B is closed, the outer wall 25 is pressed toward the partition wall 26, and the optical fiber cable 3 is further less likely to come off.

  Since the storage case 5 has the fasteners 42, the storage case 5 can be closed by the fasteners 42 when the second case 7B is closed. However, since the housing case 5 may be opened only by the fasteners 42, the operator uses the fixing tool 50 to fix the housing case 5 in the closed state in the next operation.

  Next, an operator fixes the storage case 5 to the support line 2 (S006). At this time, the operator slides the fixing tool 50 to the rear side to place the fixing tool 50 in the fixing position.

  When the fixing tool 50 is set to the fixed position, the support line 2 enters from the rear side of the concave support line fixing part 52, and the support line 2 is sandwiched between inner surfaces facing the vertical direction of the support line fixing part 52. Since the support line protrusions 52B of the support line fixing part 52 are formed along the moving direction (front-rear direction) of the fixture 50, it is easy to receive the support line 2 in the concave support line fixing part 52. . When the fixing tool 50 is set to the fixed position, the support line 2 is sandwiched between the support line fixing portion 52 and the pressing surface 35 </ b> B of the case main body 7, and the case main body 7 is fixed to the support line 2. At this time, the protrusion 52A of the support wire fixing portion 52 bites into the support wire 2, and the support wire 2 is prevented from shifting.

  When the fixing tool 50 is set to the fixing position, the fixing convex portion 43 of the second case 7B enters the inside of the window portion 53A. Thereby, the case main body 7 is fixed in a closed state.

  In the present embodiment, when the fixing tool 50 is slid rearward to place the fixing tool 50 in the fixing position, the case main body 7 is fixed to the support line 2 by the support line fixing portion 52, and the case main body is fixed by the case fixing portion 53. 7 is fixed in the closed state. For this reason, the operation | work which fixes the case main body 7 to the support wire 2 and the operation | work which fixes the case main body 7 in a closed state can be performed together, and an operator's operation | work becomes easy.

  Further, in the present embodiment, when the fixing tool 50 is slid in a state where the support wire 2 is hooked on the hook portion 31 to place the fixing device 50 in the fixing position, the case main body 7 is attached to the support wire 2 by the support wire fixing portion 52. Fixed. For this reason, the operation | work which fixes the case main body 7 to the support wire 2 is easy.

  Further, in the present embodiment, when the fixing tool 50 is set to the fixing position, the engaging portion 54 of the fixing tool 50 is hooked on the locking portion 35 </ b> A of the case body 7, and the fixing tool 50 is fixed to the fixing position. The fixed state (fixing of the support wire 2 and fixing of the case body 7 in the closed state) is maintained. As described above, the operation of fixing the fixing tool 50 to the fixing position can be performed together with the operation of fixing the case main body 7 to the support wire 2 and the operation of fixing the case main body 7 in the closed state. Work becomes easy.

  As shown in FIG. 11B, when the user's house is close to the utility pole or the optical closure, the support line 2 of the optical drop cable 1 on the user's house side is inclined, and the housing case 5 fixed to the support line 2 is also inclined. Become. In the present embodiment, it is possible to fix the housing case 5 to the support line 2 using the fixture 50 even when the support line 2 is in an oblique state. Since the drainage holes 45 are formed in any corners of the space formed around the grip 20, water is discharged from any of the drainage holes 45 even when the storage case 5 is attached obliquely. .

  In the case where the second type communication carrier having no line equipment constructs an access system by borrowing an optical communication line from the first type communication carrier having the line equipment, the second operator who is the withdrawal side is the second operator. The seed communication company drops the optical line from the optical closure set up in advance construction to the user's home by using the optical drop cable 1 or the like. According to this embodiment, the optical drop cable 1 from the optical closure and the optical drop cable 1 on the user's home side are connected to form the optical connection portion 4, and the optical connection portion 4 is accommodated in the accommodation case 5. Therefore, it is easy for the second type communication carrier to access the optical connection unit 4 thereafter, and the inspection work by the second type communication carrier becomes easy.

<Another usage>
12A and 12B are explanatory diagrams of another method of using the housing case 5. FIG. FIG. 12A is a perspective view of a state in which the wall fixing jig 61 is attached to the housing case 5. FIG. 12B is a perspective view of the state in which the wall fixing jig 61 is removed from the housing case 5. The structure of the storage case 5 is as already described.

  The wall fixing jig 61 is a jig for fixing the housing case 5 to the wall. The wall fixing jig 61 can be attached to and detached from the first case 7A. A hook 61A is formed in the wall fixing jig 61, and the housing case 5 can be fixed to the wall by hooking the wall fixing jig 61 on a wall nail or the like. In addition, the upper side in the figure is attached to the wall surface.

  The storage case 5 of the present embodiment can be fixed not only to the support wire 2 but also to the wall by using such a wall fixing jig 61.

  In the housing case 5 of the present embodiment, since the housing case 5 may be fixed to the wall using the wall fixing jig 61, the housing case 5 is disposed on the side of the first case 7A to which the wall fixing jig 61 is attached. The first housing part 11 provided with the support part 13 that supports the optical connection part 4 and the grip part 20 are provided. Thereby, since the operator puts the optical connection part 4 in the 1st case 7A fixed to the wall, work becomes easy. Temporarily, if the 1st accommodating part 11 and the holding part 20 in which the support part 13 was provided are provided in the 2nd case 7B side, the optical connection part 4 will be put in the 2nd case 7B which is not fixed. Therefore, the work is inconvenient.

=== Second Embodiment ===
FIG. 13A is a front view of the grip 20 of the second embodiment. FIG. 13B is an explanatory diagram with the optical fiber cable 3 of FIG. 13A removed.

  In the first embodiment described above, the gripping part 20 has the outer branch part 24. On the other hand, the holding part 20 of the second embodiment does not have the outer branch part 24. Even in such a housing case, it is possible to hold optical fiber cables having different shapes (first optical fiber cable or second optical fiber cable).

  However, since there is no outer branch portion 24, there are two introduction ports (one in the first embodiment) for introducing the optical fiber cable 3 from the outside to the left and right ends of the housing case 5, respectively. As a result, compared to the first embodiment, in the housing case of the second embodiment, water can easily enter from the introduction port on the side without the optical fiber cable.

=== Third Embodiment ===
<Basic configuration and usage>
14A and 14B are perspective views of the housing case 5 of the third embodiment. FIG. 14A is an explanatory diagram when the fixture 150 of the third embodiment is in a fixed position. FIG. 14B is an explanatory diagram when the fixture 150 of the third embodiment is in the release position.

  The basic configuration of the storage case 5 of the third embodiment is substantially the same as that of the storage case 5 of the first embodiment.

  The internal structure of the storage case 5 of the third embodiment is the same as the internal structure shown in FIG. Since the first grip portion 21 and the second grip portion 22 are formed on the grip portion 20, it is possible to fix the optical fiber cables 3 having different external shapes. In addition, since the branching portion 23 is formed, the first gripping portion 21 or the second gripping portion 22 of the gripping portion 20 passes through the optical fiber cable 3 of the optical connecting portion 4 housed in the housing portion through the common passage groove 12A. Can lead to. For this reason, the optical connection portion 4 can be accommodated regardless of the outer shape of the optical fiber cable 3 extending from the optical connection portion 4.

<Improved site and other usage>
The storage case 5 of the third embodiment is different from the storage case 5 of the first embodiment in that the support 150 is provided with a support wire gripping portion 56 on the fixture 150, and the support wire presser 36 is placed on the first case 7A. The difference is that the portion 38 is provided. However, the support wire gripping portion 56, the support wire presser 36 and the mounting portion 38 of the first case 7A are not used in the usage method shown in FIGS. 14A and 14B. It will be used in the usage method. Hereinafter, these parts and usage methods will be described.

・ Fixing tool 150
FIG. 15 is a perspective view of the fixture 150 of the third embodiment. The fixing tool 150 includes a movable side guide part 51, a support line fixing part 52, and a case fixing part 53, similarly to the fixing tool 50 of the first embodiment. Explanation of these parts is omitted.

  The fixture 150 of the third embodiment further includes a support wire gripping portion 56. The support wire gripping part 56 is a part that grips the support wire 2 when the storage case 5 is used in a usage method to be described later. The support line gripping portion 56 is a concave portion whose front side is opened so that the support line 2 can be received from the front side. The support wire gripping portion 56 holds the support wire 2 between the inner surfaces facing in the vertical direction, and fixes the support wire 2 in the vertical direction.

  On the inner surface facing the vertical direction of the support line gripping portion 56, support line protrusions 56B are formed. The support line protrusions 56 </ b> B are streak-like protrusions, and are parts that suppress the support line 2 from being displaced from the support line gripping part 56. Since the support line projections 56B are formed along the front-rear direction, the support line 2 received by the support line gripping portion 56 is less likely to be displaced in the left-right direction (a direction perpendicular to the support line projections 56B). On the other hand, since the support wire projections 56 </ b> B are formed along the front-rear direction, it is easy to receive the support wire 2 from the front side into the support wire gripping portion 56.

・ First case 7A
A support wire retainer 36 is formed on the upper surface of the first case 7A of the third embodiment (see FIGS. 14A and 14B). The support wire presser 36 is a portion protruding upward from the upper surface of the first case 7A. The support line presser 36 has a function of preventing the support line 2 from being detached from the support line gripping part 56 when the support line gripping part 56 of the fixture 150 grips the support line 2.

  A placement portion 38 is formed on the upper surface of the left and right end portions of the first case 7A. The placement portion 38 is a portion that comes into contact with the placement surface when the accommodation case 5 is placed on a flat placement surface (a placement surface of a cleat 63 described later). The upper surface (contact surface) of the mounting portion 38 has a surface parallel to the front-rear direction and the left-right direction (surface perpendicular to the up-down direction). The upper surfaces of the left and right end portions of the first case 7A of the first embodiment described above are inclined and are not suitable for placing the housing case 5 on a flat placement surface, but in the third embodiment, Since the mounting portion 38 is formed, the housing case 5 is easily mounted on a flat mounting surface.

-Another usage method FIG. 16: A and FIG. 16B are explanatory drawings of another usage method of the storage case 5 of 3rd Embodiment. FIG. 16A is a perspective view of the housing case 5 of the third embodiment fixed to a wall. FIG. 16B shows a state seen from the wall side through the wall.

The wall fixing jig 62 of the third embodiment has a cleat 63 and a sticking fixing jig 64.
The cleat 63 is a jig that has a hole through which the support wire 2 passes and fixes the support wire 2 to the wall. The cleat 63 can be directly fixed to the wall with a screw. However, if the cleat 63 cannot be fixed to the wall, the cleat 63 is attached to the wall by using a sticking fixing jig 64 as shown. The sticking / fixing jig 64 is a jig that is stuck and fixed to a wall. The sticking / fixing jig 64 has a cleat accommodating portion, and can be accommodated by inserting the cleat 63 from a direction parallel to the support line 2.

FIG. 17 is a perspective view of the state of installation of the wall fixing jig 62.
The operator attaches two sticking and fixing jigs 64 to the wall in accordance with the length of the housing case 5 in the left-right direction. At this time, the two fixing jigs 64 are attached to the wall so that the side on which the cleat 63 is inserted is inside. The reason for attaching the sticking / fixing jig 64 in such a direction is to prevent the cleat 63 from being detached from the sticking / fixing jig 64 after the storage case 5 is placed (see FIG. 16A).
Next, the operator opens the upper part 63 </ b> A and the lower part 63 </ b> B of the cleat 63, takes the support line 2 inside, and moves the cleat 63 along the support line 2 with the support line 2 passing through the hole of the cleat 63. Then, the cleat 63 is accommodated in the cleat accommodating portion of the sticking fixture 64. Thereby, the cleat 63 is fixed to the wall, and the support line 2 is fixed to the wall between the two cleats 63.

  After installing the wall fixing jig 62 on the wall, the operator configures the optical connection portion 4 and accommodates the optical connection portion 4 in the accommodation case 5. Thereafter, the operator puts the storage case 5 on the support line 2 so that the support line 2 fixed between the two cleats 63 is inserted into the support line gripping portion 56 of the fixture 150 of the storage case 5. Slide to install. When the operator causes the support line gripping portion 56 to grip the support line 2, the operator gets over the support line presser 36 and puts the support line 2 into the support line gripping portion 56. As a result, the support wire 2 is less likely to be detached from the support wire gripping portion 56.

  In addition, when the operator slides and attaches the storage case 5 to the support wire 2, the worker places the mounting portion 38 of the storage case 5 on the mounting surface of the cleat 63. Since the placing portion 38 has a surface parallel to the front-rear direction and the left-right direction (a surface perpendicular to the up-down direction), the housing case 5 is stably placed on the cleat 63. The storage case 5 is only placed on the placement surface of the cleat 63, but the support wire gripping portion 56 grips the support wire 2 from the vertical direction, and the support wire presser 36 is supported. In order to prevent the support line from being detached from the line gripping portion 56, the housing case 5 is stably fixed to the wall fixing jig 62. In addition, in order to further prevent the housing case 5 from falling off the support wire 2 due to strong winds, mischief, etc., the fixture 150 and the support wire 2 are connected using holes (openings) of the fixture 150 as necessary. It may be fixed with a nylon band.

=== Fourth Embodiment ===
<Overall configuration>
FIG. 18 is a perspective view of the housing case 105 of the fourth embodiment. FIG. 19 is a perspective view of the housing case 105 of the fourth embodiment with the cover 106 opened. FIG. 20 is a perspective view of the housing case 105 according to the fourth embodiment with the case body 107 opened. In the following description, a part that performs the same function as that of the first embodiment may be denoted by a sign obtained by adding 100 to a sign of a corresponding part of the first embodiment, and the description may be omitted.

  FIG. 18 shows a state in which the housing case 105 is closed and fixed to the support line 2. In the following description, this state may be referred to as a “closed state” or a “fixed state”. Further, a state in which only the cover 106 is opened as shown in FIG. 19 may be referred to as a “cover open state”. Further, as shown in FIG. 20, a state where the case main body 107 is opened may be simply referred to as an “open state”.

  In the following description, each direction is defined as shown in FIG. That is, the direction parallel to the support line 2 or the optical fiber cable 3 is “left-right direction”, and the right hand side is viewed from the side where the case main body 107 is opened (the side of the fastener 142) (viewed from the operator side). “Right” and the left hand side “Left”. Further, the direction in which the support line 2 and the optical fiber cable 3 are arranged in the closed state is “up and down direction”, the support line 2 side is “upper”, and the optical fiber cable 3 side is “lower”. Further, a direction perpendicular to the left-right direction and the up-down direction is defined as “front-rear direction”, the side of the fastener 142 viewed from the case body 107 is “front”, and the opposite side is “rear”.

  The storage case 105 of the fourth embodiment includes a case main body 107 and a cover 106 that covers the case main body 107. The cover 106 is attached to the case main body 107 so as to be rotatable by a rotation shaft 107 </ b> C provided on the case main body 107.

<Case body 107 and cover 106>
The case main body 107 is an openable / closable member that accommodates the optical connecting portion 4. The first case 107A and the second case 107B are integrally formed through a thin hinge portion. The fastener 142 is a part for closing the case main body 107. In the fourth embodiment, the case body 107 can be fixed in a closed state with only the fastener 142.

  A hook portion 131 is formed inside the cover 106. The hook part 131 is a part for hooking the support wire 2. It is possible to attach the housing case 105 to the support line 2 by hooking the support line 2 on the hook part 131.

  21A and 21B are explanatory diagrams of the structure around the hook portion 131. FIG. FIG. 21A is an explanatory diagram showing a state in which the support line 2 is placed in the support line fixing portion 152. FIG. 21B is an explanatory diagram of a state in which the support line 2 is removed. Here, in order to explain the structure of the cover 106, the case main body 107 is not shown.

  A support line fixing portion 152 is formed inside the cover 106. The support line fixing part 152 is a part for fixing the support line 2. In the fourth embodiment, since the support line fixing portion 152 is formed inside the cover 106, the advantage is that the portion for fixing the support line 2 is less likely to deteriorate compared to the support line fixing portion 52 of the first embodiment. is there.

  The support line fixing portion 152 fixes the support line 2 by sandwiching the support line 2 with the protruding support line presser 135 (see FIG. 19) of the case main body 107. The support line fixing part 152 is a concave part opened on one side so that the support line 2 can be received. The support wire fixing part 152 holds the support wire 2 between the opposed inner surfaces, and fixes the support wire 2. However, if the support line 2 is not sandwiched between the support line presser 135 and the support line 2 is sandwiched only by the opposing inner surface of the support line fixing portion 152, the housing case 105 is attached to the support line 2. It is the state (temporary fixing) attached so that movement was possible along.

  Support line protrusions 152B are formed on the inner surfaces of the support line fixing portions 152 facing each other. Since the support line ridge 152B is formed along a direction perpendicular to the left and right direction, the support line 2 received by the support line fixing portion 152 is in the left and right direction (direction perpendicular to the support line ridge 152B). It becomes difficult to shift. On the other hand, since the support line projection 152B is formed along the direction in which the support line 2 is received, it is easy to put the support line 2 into the support line fixing part 152. When the cover 106 is closed, the support line press 135 of the case body 107 presses the support line 2, so that the support line 2 of the support line fixing portion 152 does not come off.

  A protrusion 152A is formed on the surface of the support line fixing portion 152 facing the support line presser 135. When the support line 2 is sandwiched between the support line fixing portion 152 and the support line presser 135 in the closed state, the protrusion 152A bites into the support line 2 and the support line 2 is prevented from shifting.

  In the fourth embodiment, when the housing case 105 is temporarily fixed to the support line 2, the support line 2 may be hooked on the hook part 131, or the support line is inserted into the support line fixing part 152 in the open state or the cover open state. But it ’s okay.

<Internal structure of case body>
22A and 22B are explanatory diagrams of the internal structure of the case main body 107. FIG.

  Similar to the first embodiment, the case main body 107 includes a waterproof housing portion 110 that houses the optical connection portion 4 to which the optical fiber cable 3 is connected, and a grip portion that grips the optical fiber cable 3 outside the waterproof housing portion 110. 120. In the fourth embodiment, the grip portion 120 is configured by housing the grip body 120 </ b> B in the grip body housing portion 120 </ b> A provided in the housing case 105.

Waterproof housing 110
The waterproof housing portion 110 is a housing portion that houses the optical connection portion 4 in a watertight manner, and includes a first housing portion 111 of the first case 107A and a second housing portion 115 of the second case 107B. In the fourth embodiment, when an operator installs the optical connection unit 4 in the case body 107 in the open state, the optical connection unit 4 can be inserted into the second accommodation unit 115 of the second case 107.

  A waterproof seal for waterproofing the housing portion (waterproof housing portion 110) of the optical connection unit 4 is attached to the outer periphery of the waterproof housing portion 110. The waterproof seal includes a first packing 117 and a second packing 118. The first packing 117 is attached to the outer periphery of the first housing part 111. The second packing 118 is attached to the outer periphery of the second housing part 115.

-Grasping body container 120A and grabbing body 120B
The gripping body storage portion 120A is a storage portion that stores the gripping body 120B, and is formed in the second case 107B. In 4th Embodiment, the case main body 107 and the holding body 120B are separate bodies. Thereby, when the optical connection part 4 to which the special-shaped optical fiber cable 3 is connected is accommodated in the accommodation case 105, only the grip body 120B needs to be replaced.

  The gripping body storage portion 120 </ b> A is formed adjacent to the left and right of the second storage portion 115. Even if an external force (tension) is applied to the optical fiber cable 3 outside the housing case 105 by the grip body 120 </ b> B housed in this position, the external force is transmitted to the optical connection portion 4. It is suppressed.

  23A and 23B are perspective views of the gripping body 120B. FIG. 23A is a perspective view of the holding body 120B viewed from the side into which the optical fiber cable is inserted. FIG. 23B is a perspective view of the gripping body 120B viewed from the opposite side of FIG. 23A.

  The gripping body 120B is a member that grips the optical fiber cable 3 between the waterproof housing 110 and the outside. The grip body 120 </ b> B includes a first grip portion 121, a second grip portion 122, a right branch portion 123, and a left branch portion 124.

  The first grip 121 is a part (passage) that grips a first optical fiber cable having a predetermined outer shape (for example, a thickness of 1.6 mm and a width of 2.0 mm). The 2nd holding part 122 is a site | part (passage | path) which hold | grips the 2nd optical fiber cable of the external shape (for example, thickness 2.0mm, width 3.1mm) different from a 1st optical fiber cable.

  The right branch portion 123 is a portion that guides the optical fiber cable 3 introduced from the right side to the first grip portion 121 or the second grip portion 122. If the grip body 120B is accommodated in the grip body accommodating portion 120A on the left side of the case body 107, the right branch portion 123 causes the optical fiber cable 3 extending from the second accommodating portion 115 to be connected to the first grip portion 121 or the second grip portion. In order to guide to 122, the function equivalent to the inner side branch part 23 of 1st Embodiment is fulfilled. If the grip body 120B is accommodated in the grip body accommodating portion 120A on the right side of the case main body 107, the right branch portion 123 causes the optical fiber cable 3 introduced into the inside from the right end introduction port of the housing case 105 to the first grip portion. In order to guide to 121 or the 2nd holding part 122, the function equivalent to the outer side branch part 24 of 1st Embodiment is fulfilled.

  The left branch part 124 is a part that guides the optical fiber 3 introduced from the left side to the first grip part 121 or the second grip part 122. The left branch portion 124 also functions substantially the same as the inner branch portion 23 or the outer branch portion 24 of the first embodiment by being accommodated in the right or left gripping body accommodating portion 120A of the case body 107. .

  The holding body 120 </ b> B includes a pair of outer walls 125 and a partition wall 126 disposed between the outer walls 125. The inner surface of one outer wall 125 and one outer surface of the partition wall 126 face each other with an interval (here, about 1.6 mm) corresponding to the thickness of the first optical fiber cable, so that the first grip 121 is Is formed. Also, the inner surface of the other outer wall 125 and the other outer surface of the partition wall 126 are opposed to each other with an interval (here, about 2.0 mm) corresponding to the thickness of the second optical fiber cable. Is formed. That is, the gap between the outer wall 125 and the partition wall 126 becomes a path of the optical fiber cable 3. The dimension of the partition wall 126 in the left-right direction is shorter than the dimension of the outer wall 125 in the left-right direction, the partition wall 126 is not formed up to the left and right ends of the gripping body 120B, and the outer walls 125 correspond to the thickness of the optical fiber cable 3. The right branch part 123 and the left branch part 124 are formed by facing each other with a gap.

  Also in the fourth embodiment, since the first grip portion 121 and the second grip portion 122 are formed on the grip body 120B, it is possible to fix the optical fiber cables 3 having different external shapes. Also in the fourth embodiment, since the branch portions (the right branch portion 123 and the left branch portion 124) are formed, the optical fiber cable 3 of the optical connection portion 4 accommodated in the accommodation portion is connected to the common channel groove. It can be guided to the first gripping part 121 or the second gripping part 122 of the gripping body 120B through 112A. For this reason, the optical connecting portion 4 can be accommodated in the second accommodating portion 115 regardless of the outer shape of the optical fiber cable 3 extending from the optical connecting portion 4.

  Cable ridges 127 are formed on the inner surface of the outer wall 125 and the outer surface of the partition wall 126. The cable ridge 127 is a streak-like convex part, and is a part that suppresses the optical fiber cable 3 from being displaced from the gripping body 120B. Moreover, the 1st holding part 121 and the 2nd holding part 122 are curving to the opposite side to the partition 126 side. As a result, the first gripping part 121 or the second gripping part 122 bends and grips the optical fiber cable 3, so that the optical fiber cable 3 is not easily detached from the gripping body 120 </ b> B, and is transmitted along the optical fiber cable 3 to the outside. It is difficult for water that has entered from the water to reach the waterproof housing 110.

  A concave portion 128 is formed in the outer wall 125 and the partition wall 126. The recess 128 is a concave curved surface formed on the surface of the outer wall 125 and the partition wall 126 (the surface on the side into which the optical fiber cable 3 is inserted). By forming the recess 128 in the gripping body 120B, the operator can easily insert the optical fiber cable 3 into the gripping body 120B.

  A drainage groove 145 </ b> A is formed in the first grip portion 121 and the second grip portion 122. In other words, a drainage groove 145 </ b> A is formed on the inner surface of the outer wall 125 and the outer surface of the partition wall 126 constituting the first grip portion 121 and the second grip portion 122. The drain groove 145A is a groove formed along the direction in which the optical fiber cable 3 is inserted (direction perpendicular to the optical fiber cable 3). Water entering from the outside through the optical fiber cable 3 is discharged from the drain groove 145A through the hole 145B on the back surface of the gripping body 120B. In particular, the drainage groove 145A is formed at a position where the first gripping part 121 and the second gripping part 122 curve and grip the optical fiber cable, so that water that has entered from the outside through the optical fiber cable 3 is drained. The structure is easy to guide to the groove 145A. The right branch 123 and the left branch 124 are also formed with holes 145C. Similarly to the hole 145B, the hole 145C is a hole for discharging water that has entered from the outside through the optical fiber cable 3 to the back surface. The water discharged from the hole 145B and the hole 145C is discharged to the outside from a drain hole 145 (see FIG. 22B) formed in the gripping body housing portion 120A.

  On the surface of the grip body 120B (the surface on the side into which the optical fiber cable 3 is inserted), there is a notation of the thickness of the optical fiber cable 3 in accordance with the positions of the first grip portion 121 and the second grip portion 122. In the first embodiment, this notation is inside the first case 7A. However, in the fourth embodiment, the grip body 120B can be attached to and detached from the case body 107. Yes.

  The first case 107A is formed with a cable retainer 129A protruding inward (see FIG. 20). The cable retainer 129A is formed at a position facing the first gripping part 121 or the second gripping part 122 when the second case 107B is closed. When the second case 107B is closed, the cable presser 129A presses the optical fiber cable 3 toward the grip body 120B, and the optical fiber cable 3 is deformed so as to bite into the cable ridge 127. For this reason, the optical fiber cable 3 gripped by the gripping body 120B is more difficult to come off.

  A hook accommodating portion 107D is formed on the back side of the cable retainer 129A (see FIG. 19). The hook accommodating portion 107D is a portion that accommodates the hook portion 131 formed on the inner side of the cover 106 in a closed state, and is a portion that is formed in a concave shape on the outer surface of the first case 107A. By forming the hook accommodating portion 107D on the back side of the cable retainer 129A, the cable retainer 129A protruding inside the first case 107A and the hook accommodating portion 107D formed in a concave shape on the outer surface of the first case 107 can be efficiently used. Can be configured well.

=== Others ===
The above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof.

<Container>
In the above-mentioned embodiment, the accommodating part which accommodates the optical connection part 4 was the waterproof accommodating part waterproofed by packing. Thus, although the accommodating part which accommodates the optical connection part 4 is preferably waterproofed, you may accommodate the optical connection part 4 in the accommodating part which is not waterproof.

<About the gripping part>
In the above-described embodiment, the cable ridge is formed in the grip portion. Thus, although it is preferable that a holding part has a protruding line for cables, such a protruding line may not be present.

  In the above-described embodiment, the concave portion is formed in the grip portion. Thus, although it is preferable that a holding part has a recessed part, there may not be such a recessed part.

  Further, in the above-described embodiment, the cable presser is formed at a position facing the grip portion. However, there may be no cable presser.

1 optical drop cable, 2 support line, 3 optical fiber cable,
4 optical connection, 5 housing case,
7 case body, 7A first case, 7B second case,
10 waterproof housing, 11 first housing, 12 first housing wall,
12A groove for passage, 13 support part,
15 2nd accommodating part, 16 2nd accommodating wall part,
17 1st packing, 18 2nd packing, 19 groove,
20 gripping part, 21 first gripping part, 22 second gripping part,
23 inner branch, 24 outer branch,
25 outer wall, 26 partition, 27 cable ridge, 28 recess,
29A cable holder, 29B outer wall holder,
31 hook part, 32 attachment part,
33 Case side guide part, 34 Control part,
35 raised portion, 35A locking portion, 35B pressing surface,
36 Support wire press, 38 Placement part,
41 hinge, 41A first hinge, 41B second hinge,
42 fasteners, 42A first fastener, 42B second fastener,
43 convex part for fixing, 45 drainage hole,
50, 50 'fixture,
51 movable side guide, 51A groove,
52 support wire fixing portions, 52A protrusions, 52B support wire protrusions,
53 Case fixing part, 53A Window part,
54 engaging portion, 55 hooking portion,
61 Wall fixing jig, 61A hook,
62 wall fixing jig, 63 cleat, 64 sticking fixing jig,
106 cover, 107C rotating shaft, 107D hook accommodating part,
120A gripping body container, 120B gripping body,
123 Right branch, 124 Left branch,
135 Support wire retainer, 145A drainage groove, 145B, 145C hole,
150 Fixing Tool, 156 Supporting Line Gripping Part, 156B Convex Line for Supporting Line

Claims (8)

An accommodating portion for accommodating an optical connecting portion to which an optical fiber cable is connected;
An introduction port for introducing the optical fiber cable from the outside to the inside;
A housing case having a gripping portion for gripping the optical fiber cable between the housing portion and the introduction port ;
The gripping part is
A first gripping part for gripping a first optical fiber cable having a predetermined outer shape;
A second gripping part for gripping a second optical fiber cable having a different external shape from the first optical fiber cable;
An inner branch portion for guiding the optical fiber cable extending from the housing portion to the first grip portion or the second grip portion;
A housing case comprising : an outer branch portion that guides the optical fiber cable introduced into one through the introduction port at one end of the housing case to the first grip portion or the second grip portion.   The storage case according to claim 1,
  A passage for passing the optical fiber cable is formed at an end of the housing portion in the direction of the optical fiber cable,
  The inner branch portion guides the optical fiber cable extending through the passage of the housing portion to the first grip portion or the second grip portion.
The storage case according to claim 1. The storage case according to claim 1 or 2 ,
The gripping part is
While having a ridge along the direction perpendicular to the direction of the optical fiber cable,
An accommodation case configured to be able to insert the optical fiber cable from a direction along the ridge when the optical fiber cable is gripped. The storage case according to claim 3 ,
The holding case is characterized in that a recess is formed on a side into which the optical fiber cable is inserted. The storage case according to claim 3 or 4 ,
The storage case has a first case and a second case that can be opened and closed,
The grip portion is provided on one of the first case and the second case,
A housing case in which a cable presser for pressing the optical fiber cable held by the holding part is formed on the other of the first case and the second case. The storage case according to any one of claims 1 to 5 ,
The housing case, wherein the first gripping portion and the second gripping portion grip and grip the optical fiber cable. The storage case according to any one of claims 1 to 6 ,
The gripping portion is configured by housing the gripping body formed with the first gripping portion, the second gripping portion, the inner branching portion, and the outer branching portion in the gripping body housing portion of the housing case. A containment case characterized by that. The storage case according to any one of claims 1 to 7 ,
The housing case is
An openable and closable case body having the housing part and the grip part;
A slidably provided in a direction perpendicular to the support line with respect to the case body, and a fixing device having a support line fixing part and a case fixing part,
When the fixing tool is slid to place the fixing tool in a fixed position, the case main body is fixed to the support line by the support line fixing portion, and the case main body is fixed in a closed state by the case fixing portion. A storage case.

Images