CN111722319A - Optical cable trays, grippers, and optical cable splice closures - Google Patents

Abstract

The present invention provides an optical cable tray capable of coping with various connection methods by a simple method when connecting optical cables to each other. The optical fiber cable tray has a main body for accommodating a connection part of an optical fiber cable, and the main body has a plurality of attaching and detaching parts capable of attaching and detaching a gripper for grasping the optical fiber cable in a state in which the optical fiber cable is inserted and penetrated. An optical cable, wherein each of the plurality of attaching and detaching parts has one or more positioning members capable of positioning the gripper, and at least one attaching and detaching part of the plurality of attaching and detaching parts is capable of attaching and detaching an optical fiber instead of the gripper In the adapter, at least a part of the positioning member in the at least one attaching and detaching part is capable of positioning the optical adapter.

Description

Optical cable trays, grippers, and optical cable splice closures

technical field

The present invention relates to a tray for optical cables, a gripper, and a closure for optical cables.

Background technique

As a splice closure for optical cables, a splice closure having a tray for optical cables for accommodating connecting portions between optical cables is known (refer to Patent Documents 1 to 7).

Patent Document 1: Japanese Patent Laid-Open No. 2001-100050

Patent Document 2: Japanese Patent Laid-Open No. 2004-212897

Patent Document 3: Japanese Patent Laid-Open No. 2013-113891

Patent Document 4: Japanese Patent Laid-Open No. 2008-262128

Patent Document 5: Japanese Patent Laid-Open No. 2013-113926

Patent Document 6: Japanese Patent Application Laid-Open No. 10-133030

Patent Document 7: Japanese Patent Publication No. 2000-505567

There are various connection methods such as fusion connection and connector connection as the connection method of the optical cable.

However, the conventional optical fiber cable trays are rarely able to cope with both fusion connection and connector connection.

In addition, even with a tray for optical cables that can cope with both, when connecting a connector, for example, it is necessary to install components for arranging an optical adapter on the tray for optical cables, and the work becomes complicated.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a tray for optical cables, a gripper, and a splice closure for optical cables that can cope with various connection methods by a simple method when connecting optical cables to each other.

An optical fiber cable tray according to an aspect of the present invention has a main body for accommodating a connection portion of an optical fiber cable,

In the optical cable tray,

The main body has a plurality of attaching and detaching portions capable of attaching and detaching a gripper for gripping the optical fiber cable in a state in which the optical fiber cable is inserted therethrough,

Each of the plurality of attaching and detaching parts has one or more positioning members capable of positioning the gripper,

At least one of the plurality of attaching and detaching parts is capable of attaching and detaching the optical adapter instead of the gripper,

At least a part of the positioning member in the at least one attachment and detachment portion can perform positioning of the optical adapter.

The gripper according to one aspect of the present invention can be mounted on the optical fiber cable tray, and can grip the optical fiber cable in a state in which the optical fiber cable is inserted and penetrated,

The gripper has:

a lever plate, which is arranged on the side face greater than or equal to one side opposite to the loading and unloading part;

as well as

a claw part, which is provided on the lever plate and can be engaged with the positioning member of the optical fiber cable tray,

The lever plate can be elastically deformed in the direction of separation from the attaching and detaching part,

The engagement between the positioning member and the claw portion can be released by the elastic deformation.

An optical fiber cable splice closure according to one aspect of the present invention includes the optical fiber cable tray.

effect of invention

According to the configuration of the above-described invention, when connecting optical cables to each other, it is possible to cope with various connection methods by a simple method.

Description of drawings

FIG. 1 is a perspective view of a tray for an optical fiber cable according to an embodiment of the present invention.

FIG. 2 is a plan view of the optical fiber cable tray shown in FIG. 1 .

FIG. 3 is a front view of the optical fiber cable tray shown in FIG. 1 .

FIG. 4 is a perspective view showing a state in which a gripper is mounted on the optical fiber cable tray shown in FIG. 1 .

FIG. 5 is an enlarged view in which a part of FIG. 4 is enlarged.

Fig. 6 is a perspective view when the gripper shown in Fig. 5 is viewed from another direction.

FIG. 7 is a plan view showing a state in which a gripper and an optical adapter are mounted on the optical fiber cable tray shown in FIG. 1 .

FIG. 8 is a perspective view of the optical fiber cable tray shown in FIG. 7 .

9 is a perspective view showing a part of a splice closure for an optical fiber cable according to an embodiment of the present invention.

Description of the label

1: Optical cable tray (main body)

2(2a～2d): Loading and unloading part

3: Bottom face

4 (4a to 4f): Wall

5: Rib (1st rib)

6: Rib (2nd rib)

7: Rib (3rd rib)

8: Boss (first boss)

9: Cutout

10: Boss (second boss)

11: Adapter locking hole

21: Zhou Wall

22: Optical cable receiving part

23: Connect the fixed part

24: Cable fixing part installation part

25 (25a, 25b): holes

26: U-shaped accommodating part

27: Hinge Department

28(28a～28e): Tongue

41: Gripper

42 (42a, 42b): Projection

43, 47: Recessed part

44, 46: Rod plate

45: Claws

48 (48a to 48d): Grip structure

51: Optical Adapter

52, 53: Optical connectors

61: Cable Fixtures

62(62a～62d): Optical cable through hole

63: Mounting plate

64: Screws

Detailed ways

[Description of Embodiments of the Present Invention]

First, an embodiment of the present invention is given and described.

An optical fiber cable tray according to an aspect of the present invention has a main body for accommodating a connection portion of an optical fiber cable,

In the optical cable tray,

The main body has a plurality of attaching and detaching portions capable of attaching and detaching a gripper for gripping the optical fiber cable in a state in which the optical fiber cable is inserted therethrough,

Each of the plurality of attaching and detaching parts has one or more positioning members capable of positioning the gripper,

At least one of the plurality of attaching and detaching parts is capable of attaching and detaching the optical adapter instead of the gripper,

At least a part of the positioning member in the at least one attachment and detachment portion can perform positioning of the optical adapter.

According to the above-mentioned configuration, when connecting the optical cables to each other, it is possible to cope with various connection methods by a simple method.

The optical cable tray is preferably:

In each of the plurality of attaching and detaching parts, the optical adapter can be attached and detached instead of the gripper,

At least a part of the positioning member among the plurality of attaching and detaching parts can perform positioning of the optical adapter.

According to the above-mentioned configuration, when connecting the optical cables to each other, it is possible to cope with various connection methods by a simple method.

The optical cable tray is preferably:

the main body has a bottom face portion and a plurality of wall portions erected from the bottom face portion,

the wall portion is formed in parallel with at least one other wall portion or more,

The attaching and detaching part includes a part of the bottom surface part, a first wall part and a second wall part which are parallel to each other, and is constituted,

The positioning member is provided on at least one of the first wall portion and the second wall portion.

According to the above-described configuration, the positioning of the gripper and the positioning of the optical adapter can be easily performed with a simple structure.

The optical cable tray is preferably:

As the positioning member, a rib perpendicular to the bottom surface is provided,

The rib performs positioning of the gripper in a direction parallel to the bottom surface portion and a longitudinal direction parallel to the first wall portion, and performs a direction parallel to the bottom surface portion and the longitudinal direction Orthogonal orientation of the optical adapter in the width direction.

According to the above-mentioned configuration, the positioning accuracy of the gripper and the positioning of the optical adapter can be improved with a simple structure.

The optical cable tray is preferably:

The first wall portion has a first rib and a second rib perpendicular to the bottom surface portion,

The first wall portion has a first protruding portion between the first rib and the second rib,

The first protrusions perform positioning of the gripper in the height direction orthogonal to the longitudinal direction and the width direction,

The second wall portion has a second protruding portion,

The second protrusions perform positioning of the optical adapter in the height direction.

According to the above structure, the positioning accuracy of the gripper and the positioning of the optical adapter can be further improved.

The optical cable tray is preferably:

The plurality of attaching and detaching parts are arranged along one side forming the outer periphery of the bottom surface part,

The two adjacent attaching and detaching parts share one of the wall parts.

According to the above configuration, when the connecting portion of the optical fiber cable is accommodated in the main body, the orientation of the optical fiber cable extending to the outside of the main body can be aligned in one direction. Therefore, workability can be improved. In addition, according to the configuration of the present invention, it is possible to reduce the number of components required to provide a plurality of attaching and detaching portions. Therefore, it can contribute to reduction of manufacturing cost and space saving of the optical-fiber-cable tray.

The gripper according to one aspect of the present invention can be mounted on the optical fiber cable tray, and can grip the optical fiber cable in a state in which the optical fiber cable is inserted and penetrated,

The gripper has:

A lever plate, which is arranged on the side face of one or more sides opposite to the loading and unloading portion; and

a claw part, which is provided on the lever plate and can be engaged with the positioning member of the optical fiber cable tray,

The lever plate can be elastically deformed in the direction of separation from the attaching and detaching part,

The engagement between the positioning member and the claw portion can be released by the elastic deformation.

According to the said structure, it becomes easy to carry out loading and detachment of the gripper to the optical fiber cable tray.

An optical fiber cable splice closure according to one aspect of the present invention includes the optical fiber cable tray.

According to the above-described configuration, when connecting optical cables to each other, it is possible to cope with various connection methods by a simple method.

[Details of Embodiments of the Present Invention]

Hereinafter, an example of embodiment of the optical fiber cable tray, the gripper, and the optical fiber cable splice closure according to the present invention will be described with reference to the drawings. In addition, in the following description, even if it is a different drawing, the same code|symbol is attached|subjected to the same or equivalent element, and overlapping description is abbreviate|omitted suitably.

[Optical cable tray]

FIG. 1 is a perspective view of a tray for an optical fiber cable according to an embodiment of the present invention. FIG. 2 is a plan view of the optical fiber cable tray shown in FIG. 1 . FIG. 3 is a front view of the optical fiber cable tray shown in FIG. 1 .

The optical fiber cable tray 1 (hereinafter, also referred to as the main body 1 ) shown in FIGS. 1 to 3 includes a plurality of attaching and detaching parts 2 ( 2 a to 2 d ), a bottom surface part 3 , a peripheral wall 21 , an optical cable accommodating part 22 , and a connecting and fixing part 23 , the cable fixing part installation part 24 , the U-shaped accommodating part 26 , the hinge part 27 and the tongue piece 28 .

First, structures other than the attaching and detaching portion 2 will be described. The bottom surface portion 3 is a support substrate of the main body 1 . The peripheral wall 21 is erected from the bottom surface portion 3 . The peripheral wall 21 is provided in a portion other than a part of the outer periphery of the bottom surface portion 3 , and is provided in a U-shape so as to surround the bottom surface portion 3 on three sides in the present embodiment. The optical cable accommodating portion 22 is formed by a surrounding wall erected from the bottom surface portion 3 . A part of the surrounding wall is formed with a cutout for introduction and extraction of the optical fiber cable. The extra length of the optical cable can be accommodated inside the surrounding wall. The connection-fixing portion 23 is, for example, a portion that can fix the connection portion when the optical cable is welded and connected. The connection fixing portion 23 may be configured to be able to fix the connection portion when the mechanical joint connection is performed.

The cable anchor attachment portion 24 is configured to be capable of attaching a later-described cable anchor 61 . Holes 25 a and 25 b are provided in the cable fixing tool attachment portion 24 . The U-shaped accommodating portion 26 is provided on the peripheral wall 21 . The hinge portion 27 is provided so as to protrude from the peripheral wall 21 to the outside of the main body 1 . The U-shaped accommodating portion 26 and the hinge portion 27 support the optical fiber cable tray 1 positioned on the main body 1 when other optical cable trays 1 are stacked on the main body 1 . The tongue pieces 28 ( 28 a to 28 e ) are provided so as to protrude toward the inside of the main body 1 from the wall (the peripheral wall 21 and the like) erected on the bottom surface portion 3 . The tongue piece 28 has a function of pressing the optical cable so that the optical cable is not pushed out from the optical cable tray 1 when the optical cable is accommodated in the optical cable tray 1 .

Next, the structure of the attachment and detachment part 2 is demonstrated. The attaching and detaching part 2 is configured to be capable of attaching and detaching (mounting and detaching) any of the gripper 41 and the optical adapter 51 described later. Specifically, the attaching and detaching portion 2 is constituted by a part of the bottom surface portion 3 , two wall portions 4 that are erected from the bottom surface portion 3 and are parallel to each other, and a positioning member.

For example, in the case of the attaching/detaching part 2a, it consists of a part of the bottom surface part 3, the wall part 4a, and the wall part 4b parallel to the wall part 4a. The attaching and detaching portion 2a has, as positioning members, ribs 5 to 7 and a boss 8 provided on the right side surface of the wall portion 4a (surface facing the wall portion 4b), and a boss 10 provided on the The left side surface of the wall part 4b (surface facing the wall part 4a); and the adapter locking hole 11, which is provided in the bottom surface part 3.

The attaching and detaching part 2b adjacent to the attaching and detaching part 2a is constituted by a part of the bottom surface part 3, a wall part 4b, and a wall part 4c parallel to the wall part 4b. Like the right side surface of the wall part 4a, the ribs 5-7 and the boss|hub part 8 are provided in the right side surface (surface facing the wall part 4c) of the wall part 4b. Like the left side surface of the wall part 4b, the boss|hub part 10 is provided in the left side surface (surface facing the wall part 4b) of the wall part 4c. That is, the left side surface of the wall portion 4b participates in the formation of the attachable and detachable portion 2a, and the right side surface of the wall portion 4b participates in the formation of the attachable and detachable portion 2b. As described above, the adjacent attaching and detaching parts 2a and 2b share the wall part 4b.

The plurality of attachable and detachable portions 2 are arranged along one side forming the outer periphery of the bottom surface portion 3 . That is, in a plan view (see FIG. 2 ), each of the plurality of wall parts 4 is parallel to each other, and is perpendicular to one side forming the outer periphery of the bottom surface part 3 . Four attaching and detaching parts (hereinafter, also referred to as left attaching and detaching parts) 2 including attaching and detaching parts 2 a to 2 b are arranged on the left side of the cable fixing tool attachment part 24 , and on the right side of the cable fixing tool attaching part 24 Four attaching and detaching parts (hereinafter, also referred to as right attaching and detaching parts) 2 including attaching and detaching parts 2c to 2d are arranged. In addition, the left attaching and detaching part 2 and the right attaching and detaching part 2 may not be arranged along one side, and may be provided, for example, on two sides facing each other, respectively. In addition, although the left attaching and detaching part 2 and the right attaching and detaching part 2 have a bilaterally symmetrical structure, they may have the same structure as each other. For example, in the right attaching and detaching part 2 , similarly to the left attaching and detaching part 2 , ribs 5 to 7 , bosses 8 and notch 9 are provided on the left side of the wall part 4 , and protrusions are provided on the right side of the wall part 4 . 10 from the start.

Next, the gripper, the optical adapter, and their positioning will be described with reference to FIGS. 4 to 8 . In the following description, the "longitudinal direction" refers to a direction parallel to the bottom surface portion 3 and a direction parallel to the wall portion 4 . The "width direction" means a direction parallel to the bottom surface portion 3 and a direction orthogonal to the longitudinal direction. The "height direction" means a direction orthogonal to the longitudinal direction and the width direction. The “first wall portion” refers to the wall portion on the side where the ribs 5 to 7 , the boss portion 8 , and the cutout 9 are provided with respect to the attachable and detachable portion 2 among the two wall portions 4 constituting the attachable and detachable portion 2 . The “second wall portion” refers to the wall portion on the side of the attaching and detaching portion 2 on which the boss portion 10 is provided among the two wall portions 4 constituting the attaching and detaching portion 2 . "Equal" is not only a case of being strictly equal, but also a case where the difference between the two is sufficiently small and can be evaluated as being substantially equal.

[Gripper]

FIG. 4 is a perspective view showing a state in which the gripper 41 is mounted on the optical fiber cable tray 1 shown in FIG. 1 . FIG. 5 is an enlarged view of the attaching/detaching portion 2d and the gripper 41 shown in FIG. 4 . FIG. 6 is a perspective view when the gripper 41 shown in FIG. 5 is viewed from another direction. FIG. 7 is a plan view showing a state in which the gripper 41 and the optical adapter 51 are mounted on the optical fiber cable tray 1 shown in FIG. 1 . FIG. 8 is a perspective view of the optical fiber cable tray 1 shown in FIG. 7 .

First, the gripper 41 and the positioning of the gripper 41 will be described. As shown in FIG. 4 , the gripper 41 can be mounted on each attaching/detaching part 2 . As shown in FIGS. 5 and 6 , the gripper 41 includes protruding portions 42 a and 42 b , recessed portions 43 and 47 , lever plates 44 and 46 , a claw portion 45 , and a plurality of gripping structures 48 . Moreover, the attaching/detaching part 2d has a part of the bottom surface part 3, the 1st wall part 4f, and the 2nd wall part 4e.

The protruding parts 42 a and 42 b , the recessed part 43 , the lever plate 44 , and the claw part 45 are formed on the surface of the side surface of the gripper 41 facing the first wall part 4 f. The recessed portion 43 is a recessed space formed between the protruding portion 42a and the protruding portion 42b, and is used for positioning of the gripper 41 in the longitudinal direction. Specifically, in the longitudinal direction, the length of the recessed portion 43 (the distance between the inner end of the protruding portion 42a and the inner end of the protruding portion 42b ) is equal to the distance between the outer end of the rib 5 and the outer end of the rib 6 length. Therefore, movement in the longitudinal direction of the gripper 41 can be restricted by the ribs 5 and 6 and the projections 42a and 42b. In addition, the number of ribs used for positioning in the longitudinal direction may be one, or three or more. When positioning is performed by one rib, for example, a fitting groove into which the rib is fitted may be provided in the gripper 41 .

Moreover, the gripper 41 and the attaching/detaching part 2d are provided with the part which mutually has the same length in the width direction. Specifically, the length in the width direction in the vicinity of the protruding portions 42a and 42b is equal to the distance between the opposing surfaces of the first wall portion 4f and the second wall portion 4e. With the above-described structure, the movement in the width direction of the gripper 41 can be restricted, and the positioning in the widthwise direction of the gripper 41 can be performed.

A lever plate 44 is formed in the recessed portion 43 so as to face the first wall portion 4f. The lever plate 46 paired with the lever plate 44 is formed so as to be exposed from the upper surface of the gripper 41 . In the present embodiment, the lever plates 44 and 46 and the other parts of the gripper 41 (the main body of the gripper 41 ) are formed of resin having predetermined elasticity. That is, when a force in the direction of separation from the first wall portion 4f is applied to the lever plate 44, the lever plate 44 is elastically deformed, and the lever plate 44 is separated in the direction of the lever plate 46, that is, in the direction of separation from the first wall portion 4f move in the direction.

Moreover, the claw part 45 is formed in the lever plate 44. As shown in FIG. The claw portion 45 and the boss portion 8 formed between the rib 5 and the rib 6 at the first wall portion 4f are formed at positions corresponding to each other. When the gripper 41 is mounted on the attaching and detaching part 2 , the protruding part 42 b is pressed into the rib 5 and the protruding part 42 a is abutted on the rib 6 while being pressed in from top to bottom. When the gripper 41 is pushed in to a certain extent, the lower end of the claw portion 45 and the upper end of the protruding portion 8 collide and cannot be pushed in any further. However, in this state, by applying force to the lever plates 44 and 46 so as to approach each other, the lever plate 44 is elastically deformed, and the claw portion 45 can pass over the boss portion 8 . As a result, the gripper 41 can be press-fitted until the bottom surface of the gripper 41 comes into contact with the bottom surface portion 3 . In addition, in this state, the upper end of the claw portion 45 and the lower end of the boss portion 8 are in contact with each other, so that the movement in the height direction is restricted. That is, the claw portion 45 and the boss portion 8 are engaged, thereby realizing the positioning of the gripper 41 in the height direction. In addition, the front end (top end) of the lever plate 44 has an inverted L shape. In a state where the gripper 41 is mounted, the tip of the inverted L-shape is positioned above the cutout 9 between the rib 5 and the rib 6 in the first wall portion 4f. The cutouts 9 are provided so that the pinch lever plates 44 and 46 can be easily grasped with fingers. When removing the gripper 41 from the attaching and detaching portion 2d, the gripper 41 may be lifted up by passing the claw portion 45 over the boss 8 while applying a force to the lever plates 44 and 46 so as to approach each other.

In addition, as mentioned above, as long as the gripper 41 can be attached and detached, the material of the lever plates 44 and 46 and the gripper 41 is not limited. For example, the lever plates 44 and 46 may be formed of resin having higher rigidity than the gripper 41 . Alternatively, the lever plates 44 and 46 may be configured using a single U-shaped leaf spring. In the case of using a leaf spring, the main body of the gripper 41 may not have elasticity. Alternatively, the gripper 41 including the lever plates 44 and 46 may be integrally molded as a whole using resin having predetermined elasticity. The lever plates 44 and 46 may also be formed of metal.

The recessed part 47 and the gripping structure 48 are formed in the surface which opposes the 2nd wall part 4e among the side surfaces of the gripper 41. As shown in FIG. The recessed portion 47 is provided so that the gripper 41 does not collide with the protruding portion 10 when the gripper 41 is loaded on the attaching and detaching portion 2d. That is, the positions of the recessed portions 47 correspond to the positions of the raised portions 10, and when a plurality of raised portions 10 are provided, a plurality of recessed portions 47 may be provided. In addition, in this embodiment, the protruding portion 10 participates in the positioning of the optical adapter 51 and does not participate in the positioning of the gripper 41 , but may also be configured to participate in the positioning of the gripper 41 . For example, the lengths of the protruding portion 10 and the recessed portion 47 in the longitudinal direction may be equal to each other, and the protruding portion 10 and the recessed portion 47 may be engaged to position the gripper 41 in the longitudinal direction.

Four gripping structures 48 ( 48a to 48d ) are arranged in a row in the height direction. The gripper 41 grips the optical cable in a state of being inserted through the gripping structure 48 . The gripping structure 48 is a groove provided in the surface of the gripper 41 facing the second wall portion 4e, and penetrates the gripper 41 in the longitudinal direction. The gripping structure 48 is formed of a member having predetermined elasticity, and grips the optical fiber cable from above and below. The groove-forming member is elastically deformed according to the shape of the optical fiber cable to be gripped. Therefore, various optical cables can be held.

In addition, a spine portion may be provided inside the groove of the gripping structure 48 . For example, when the optical fiber cable is a flat branch cable, the main body is sandwiched by the spine, and when the optical cable is a round branch cable, the inner loose tube is sandwiched by the spine. Grip steadily. That is, a stable gripping force can be exhibited with respect to a plurality of optical cables by one type of gripper 41 . In addition, the height of the groove can be appropriately changed according to the diameter and type of the target optical fiber cable. For example, various grippers 41 having gripping structures corresponding to the diameter and type of the optical cable can be prepared. In the optical fiber cable tray 1 of the present invention, since the gripper 41 is of an attachable and detachable type, the type of the gripper 41 can be changed according to the type of the optical fiber cable. Therefore, it is easy to handle a plurality of optical cables with a single optical cable tray 1 .

[optical adapter]

Next, the optical adapter 51 and the positioning of the optical adapter 51 will be described. As shown in FIGS. 7 and 8 , the optical adapter 51 can be attached to and detached from the attachment section 2 instead of the gripper 41 . The type of the optical adapter 51 that can be applied to the optical fiber tray of the present invention is not particularly limited, and may be, for example, an adapter for an LC connector or an adapter for an SC connector. Also, other connector adapters may be used. The optical adapter 51 can mount the optical connectors 52 and 53 at both ends in the longitudinal direction. The optical connectors 52 and 53 can be appropriately changed according to the type and shape of the optical adapter 51 . Optical cables are connected to the optical connectors 52 and 53 . When the optical adapter 51 is used, the optical adapter 51 becomes a connection part of the optical cable. In addition, at least one of the plurality of attaching and detaching parts 2 only needs to be capable of attaching and detaching the optical adapter 51 instead of the gripper 41 .

Although not shown, the bottom surface of the optical adapter 51 is provided with a locking portion having a shape capable of engaging with the adapter locking hole 11 . The locking portion is, for example, a protrusion protruding downward from the bottom surface of the optical adapter 51 , and preferably has a shape corresponding to the adapter locking hole 11 . Movement in the longitudinal direction and the width direction of the optical adapter 51 can be restricted by engaging the locking portion with the adapter locking hole 11 . That is, the locking portion of the optical adapter 51 and the adapter locking hole 11 are involved in the positioning of the optical adapter 51 in the longitudinal direction and the width direction.

When the optical adapter 51 is mounted on the detachable portion 2 , the ribs 5 to 7 provided on the first wall portion participate in the positioning of the optical adapter 51 in the width direction. The length in the width direction of the optical adapter 51 is shorter than the length in the width direction of the attaching/detaching portion 2 (the distance between the opposing surfaces of the first wall portion and the second wall portion). When the optical adapter 51 is mounted on the attaching and detaching part 2 , the ribs 5 to 7 function as spacers for bridging the difference in length between the optical adapter 51 and the attaching and detaching part 2 in the width direction. That is, the distance from the front end of the rib 5 to the second wall portion 4 in the width direction is equal to the width of the portion of the optical adapter 51 corresponding to the rib 5 . The same applies to the ribs 6 and 7 . Further, the distance from the front end of the rib 7 to the second wall portion 4 in the width direction is longer than in the case of the ribs 5 and 6 . As described above, the length in the width direction of each rib can be changed according to the shape of the optical adapter.

The protrusions 10 participate in the positioning of the optical adapter 51 in the height direction. The protruding portion 10 is provided at a position corresponding to the height of the optical adapter 51 . The top portion of the boss 10 has rounded corners, and when a force is applied to press the optical adapter 51 into the attaching/detaching section 2 , the optical adapter 51 can be made to pass under the boss 10 . In this state, the lower end of the protruding portion 10 and the upper end of the optical adapter 51 collide, so that the movement in the height direction of the optical adapter 51 is restricted. That is, positioning in the height direction of the optical adapter 51 is achieved.

In FIG. 8 , the optical adapter 51 is mounted on each left attaching/detaching part 2 , and the gripper 41 is mounted on each right attaching/detaching part 2 . In this case, for example, the connector 52 is connected to the front end of one of the optical cables (eg, branch cables drawn from the trunk cable). In addition, the other optical cable (for example, a branch cable) is inserted through the gripper 41 , and the front end of the other optical cable is connected to the connector 53 . Also, in the adapter 51, the optical cables are optically connected to each other. On the other hand, when the optical cables are welded and connected to each other, the gripper 41 is mounted on each left attaching and detaching part 2 instead of the optical adapter 51 . Then, one optical fiber cable inserted through the gripper 41 on the left attaching/detaching portion 2 side and the other optical fiber cable inserted through the gripper 41 on the left attaching/detaching portion 2 side are welded and connected to each other, and the two are optically connected. . Moreover, the connection part of the optical-fiber cables which are fusion-connected is fixed to the optical-fiber-cable tray 1 at the connection fixing part 23. As shown in FIG.

[Splice Box for Optical Cable]

Next, the splice closure for an optical fiber cable will be described with reference to FIG. 9 . FIG. 9 is a perspective view showing a part of the splice closure 60 for an optical fiber cable according to an embodiment of the present invention. In FIG. 9 , the optical fiber tray 1 described above is fixed to the cable fixing member 61 . The cable fixing member 61 has optical cable passing holes 62 ( 62 a to 62 d ), a mounting plate 63 and screws 64 . The optical fiber cable drawn into the optical fiber cable splice closure 60 is inserted through the optical fiber cable passage hole 62, and is guided to the area in which the optical fiber tray 1 is accommodated. The mounting plate 63 is provided with holes corresponding to the holes 25 a and 25 b of the optical fiber tray 1 . The holes 25a and their corresponding holes are superimposed on each other, and the holes 25b and their corresponding holes are superimposed on each other, and the screws 64 can be used for fixing from above.

The shape, size, and the like of the optical cable splice closure 60 are not particularly limited as long as one or more optical fiber trays 1 having at least the attaching and detaching portion 2 can be accommodated. In the present embodiment, the splice closure 60 for optical cables has at least the optical fiber tray 1 and the optical fiber tray 1 ′. The optical fiber tray 1 ′ has at least the attaching and detaching portion 2 , and may have the same structure as the optical fiber tray 1 . The optical fiber tray 1 ′ is fixed to the optical fiber tray 1 or the optical fiber cable fixing member 25 . In addition, although not shown in the figure, the optical fiber tray 1 or 1' may be further superimposed on the optical fiber tray 1 and below the optical fiber tray 1'.

As mentioned above, although this invention was demonstrated in detail with reference to the specific embodiment, it is clear for those skilled in the art that various changes and correction can be added without deviating from the mind and range of this invention. In addition, the number, position, shape, etc. of the components described above are not limited to the above-mentioned embodiment, and can be changed to the number, position, shape, etc. suitable for implementing the present invention.

Claims (8)

1. An optical cable tray having a main body for housing a connection portion of an optical cable,

in the tray for optical fiber cables, it is preferable that,

the main body has a plurality of detachable sections to which a grip for grasping the optical cable in a state where the optical cable is inserted therethrough is detachable,

the plurality of attaching/detaching portions each have 1 or more positioning members capable of positioning the grip,

at least one of the plurality of attaching/detaching portions is capable of attaching/detaching the light adapter in place of the grip member,

at least a part of the positioning member in the at least one attaching/detaching portion can perform positioning of the optical adapter.

2. The tray for optical fiber cables of claim 1,

a light adapter is detachably attached to each of the plurality of attaching/detaching portions in place of the grip member,

at least a part of the positioning member in the plurality of attaching/detaching portions can position the optical adapter.

3. The tray for optical fiber cables according to claim 1 or 2,

the main body has a bottom surface portion and a plurality of wall portions provided upright from the bottom surface portion,

the wall portion is formed parallel to at least 1 other wall portion or more,

the detachable part comprises a part of the bottom surface part, and a 1 st wall part and a 2 nd wall part which are parallel to each other,

the positioning member is provided on at least one of the 1 st wall portion and the 2 nd wall portion.

4. The tray for optical fiber cables of claim 3, wherein,

a rib perpendicular to the bottom surface portion is provided as the positioning member,

the rib positions the grip in a longitudinal direction parallel to the bottom surface portion and parallel to the 1 st wall portion, and positions the optical adapter in a width direction parallel to the bottom surface portion and orthogonal to the longitudinal direction.

5. The tray for optical fiber cables of claim 4, wherein,

the 1 st wall part has a 1 st rib and a 2 nd rib perpendicular to the bottom surface part,

the 1 st wall portion has a 1 st lobe between the 1 st rib and the 2 nd rib,

the 1 st projection performs positioning of the grip in a height direction orthogonal to the longitudinal direction and the width direction,

the 2 nd wall portion has a 2 nd projection,

the 2 nd boss performs positioning of the optical adapter in the height direction.

6. The tray for optical cables according to any one of claims 3 to 5,

the plurality of attaching/detaching portions are arranged along one side forming the outer periphery of the bottom surface portion,

the adjacent 2 attaching and detaching portions share 1 wall portion.

7. A gripping member that can be mounted on the optical cable tray according to any one of claims 1 to 6 and can grip the optical cable in a state where the optical cable is inserted therethrough,

the grip has:

a lever plate provided on a side surface of the side of 1 or more facing the attachment/detachment portion; and

a claw portion provided on the lever plate and capable of engaging with the positioning member of the optical cable tray,

the lever plate is elastically deformable in a direction separating from the attaching/detaching portion,

the engagement between the positioning member and the claw portion can be released by the elastic deformation.

8. A splice case for optical cables, comprising the tray for optical cables according to any one of claims 1 to 6.

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