JP4822368B2 - Light outlet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical outlet that materializes miniaturization in the width direction and that is also adaptable to a standardized wiring fixture mounting frame. <P>SOLUTION: The optical outlet includes a main body case 10 that is mountable on a room wall through a wiring fixture mounting frame 1 and that has adaptor mounting parts 11, 12 formed inside, and also includes an optical adaptor 20 that is attached to the adaptor mounting parts 11, 12. The optical adaptor 20 has an outer shape defined by the square adaptor body. Further, the adaptor body includes a connector joining part for joining an optical connector inside, having an outer shape with no projections on both sides in the width direction. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to an optical outlet to which an optical fiber cable terminated with an optical fiber connector is connected.

With the development of ultra-high-speed Internet connection technology, the introduction of so-called FTTH (Fiber To The Home), an Internet connection service that uses optical fiber cables (hereinafter sometimes simply referred to as “optical fibers”) as access lines, has been introduced in ordinary houses. Progressing.
In order to promote the spread of this type of Internet connection service to ordinary homes, it is indispensable to develop indoor wiring equipment (optical outlets) that can easily connect optical fibers in each room in the house.

  In particular, it is expected that an optical outlet that can be attached to an existing wiring fixture mounting frame can dramatically increase the number of optical fiber pull-in cases. That is, the mounting frame of the indoor wiring apparatus such as an outlet and a switch is standardized in size and shape according to JIS (Japanese Industrial Standard), and various indoor wiring apparatuses can be mounted in common. If the installation work of the optical outlet becomes possible using the standardized wiring fixture mounting frame in this way, the optical outlet can be easily installed even in the existing house, and the optical fiber connection environment is easily prepared. It becomes possible.

  On the other hand, when a standardized wiring fixture mounting frame is used, the width dimension of the optical outlet attached thereto is necessarily limited by the width dimension of the wiring fixture mounting frame.

  Moreover, the optical outlet generally has a built-in optical fiber adapter. An optical fiber adapter is a component for connecting an optical fiber connector provided at the tip of an optical fiber. The optical outlet incorporates this optical fiber adapter, and an optical connector is inserted and connected to the optical fiber adapter.

However, as shown in FIG. 5 of Patent Document 1, many of the conventional optical fiber adapters have mounting flanges (17) protruding on both side surfaces in the width direction, and the flanges (17) are screwed to the mounting target. It was a composition. In addition, there are optical fiber adapters that do not have the screwing configuration of the flanges (17) on both side surfaces in the width direction. However, since the protrusions for locking from the both side surfaces in the width direction to the mounting portion also protrude, these flanges (17) Further, the protruding portion of the locking projection becomes an obstacle, and the width dimension of the entire optical outlet cannot be shortened, which makes it difficult to cope with the existing standardized wiring device mounting frame.
See Japanese Patent Laid-Open No. 9-212264, FIG.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an optical outlet that realizes downsizing in the width direction and is compatible with a standardized wiring fixture mounting frame.

In order to achieve the above object, the present invention is mounted on an indoor wall surface through a wiring fixture mounting frame whose dimensions are standardized by Japanese Industrial Standards, and the width dimension is determined by the standard wiring fixture boss width dimension. An optical outlet configured to be constrained,
A main body case having an adapter mounting portion formed therein, and an optical fiber adapter mounted on the adapter mounting portion,
The optical fiber adapter includes an adapter body having a connector connecting portion for connecting an SC connector therein, and an internal connection latch member.
The connector connecting portion has both front and rear ends opened, and a locking projection is formed on the inner side surface in the center in the front-rear direction.
The internal connection latch member is fitted into the base part formed in an external dimension corresponding to the internal shape of the connector connection part, a cylindrical part formed extending in the axial direction at the center part of the base part, and the cylindrical part A cylindrical sleeve, and the cylindrical sleeve holds the ferrule of the SC connector inserted into the connector connecting portion,
Furthermore, the internal connection latch member is disposed at the center portion in the front-rear direction of the connector connection portion by the base portion being fitted into the connector connection portion from one opening and engaging the locking projection.
And, in the adapter mounting part of the main body case, while forming a locking part for locking the optical fiber adapter,
The adapter body has a flat outer shape on both side surfaces in the width direction corresponding to the width direction of the main body case, and is engaged with the engaging portion on the side surface in the thickness direction orthogonal to the both side surfaces in the width direction. A stop portion is formed.

  By making the adapter body into a shape that does not protrude on both sides in the width direction, the width of the adapter mounting part to which this adapter body is attached can be reduced, and as a result, the overall width of the optical outlet is reduced. Downsizing. Thus, the optical outlet of this invention which implement | achieved miniaturization can be easily adapted to the standardized wiring apparatus mounting frame.

  In the optical outlet of the present invention, the connector connecting portion of the optical fiber adapter can be formed in a size and shape capable of inserting and connecting a two-core optical fiber connector in which two optical fibers are fixed in the width direction.

Here, a locking portion for locking the optical fiber adapter may be formed on the adapter mounting portion, and a locked portion that engages with the locking portion may be formed on the side surface in the thickness direction of the adapter main body. preferable. Thus, by forming the locked portion on the side surface in the thickness direction, it is possible to avoid the increase in the width dimension.
For example, the locking portion formed on the adapter mounting portion may be formed in a concave or convex shape, and the locked portion of the adapter main body may be formed in a convex or concave shape that engages with the locking portion.

  Moreover, the optical outlet of this invention can also form the connector connection part of an optical fiber adapter in the dimension shape which can insert and connect a single core optical fiber connector.

Here, in the state where two optical fiber adapters suitable for the single-core optical fiber connector are arranged in contact with each other in the width direction, the pitch between the optical fibers inserted into the connector connection portions of the respective optical fiber adapters is determined as a two-core optical fiber connector. It is preferable to configure the adapter main body so as to have a pitch between two optical fibers fixed to each other.
The two-core optical fiber connector has two optical fibers aligned and fixed in the width direction.

  If comprised in this way, the structure equivalent to the optical fiber adapter which adapts a two-core optical fiber connector can be implement | achieved using two optical fiber adapters suitable for a single core optical fiber connector. Accordingly, it is possible to manufacture an optical outlet having a configuration suitable for a two-core optical fiber connector using only an optical fiber adapter compatible with a single-core optical fiber connector, and it is possible to reduce the number of parts.

  In this case, the adapter mounting portion is formed in a width dimension that allows two adapter main bodies to contact in the width direction and be mounted side by side. Furthermore, a locking portion for locking each adapter body is formed on the adapter mounting portion, and a locked portion that engages with the locking portion is formed on the side surface in the thickness direction of the adapter body. Is preferred.

  Here, when the locking part and the locked part constitute two adapter bodies side by side and are attached to the adapter mounting part, the positioning means for positioning the adapter body at an appropriate position of the adapter mounting part is configured. Two optical fiber adapters can be easily positioned and incorporated in the main body case, and workability is improved.

  For example, the locking portion formed on the adapter mounting portion can be formed in a concave or convex shape, and the locked portion of the adapter body is correspondingly convex or concave to engage with the locking portion. Can be formed.

  According to the present invention, since the adapter body has an outer shape without protruding portions on both side surfaces in the width direction, the width dimension of the adapter mounting portion to which the adapter body is mounted can be reduced. Miniaturization can be realized by reducing the overall width dimension. Thus, the optical outlet of this invention which implement | achieved miniaturization can be easily adapted to the standardized wiring apparatus mounting frame.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[Overall structure of optical outlet]
FIG. 1 is a side sectional view showing the overall configuration of an optical outlet according to an embodiment of the present invention, and FIG. 2 is a side sectional view showing a state in which the optical outlet is attached to a wiring fixture mounting frame.

In these drawings, the optical outlet is optically connected between a main body case 10, optical fiber adapters (hereinafter simply referred to as “optical adapters”) 20, 20 on the apparatus side and main line side, and between these optical adapters 20, 20. And a relay optical fiber 30 to be connected.
Here, the “equipment side” refers to the side connected to the communication device terminal installed in the room, and the “main line side” has been routed from outside through the interior of the indoor wall. The side to which the optical fiber is connected.

  The main body case 10 can be attached to and detached from a standardized wiring fixture mounting frame 1 in the same manner as an outlet or a switch (see FIG. 2). For this purpose, an engagement portion (not shown) to the wiring device mounting frame 1 is formed on the periphery of the main body case 10. A decorative plate 2 is detachably attached to the wiring device mounting frame 1. The decorative plate 2 is mounted around the front side of the main body case 10 mounted on the wiring device mounting frame 1.

  The main body case 10 has a hollow portion 10a formed therein, and a device-side adapter mounting portion 11 that opens downward is formed on the front side of the main body case 10. A device-side optical adapter 20 is attached to the device-side adapter mounting portion 11. Further, a main-line-side adapter mounting portion 12 that opens obliquely downward is formed on the inner back side of the main body case 10, and the main-line-side optical adapter 20 is mounted on the main-line-side adapter mounting portion 12.

  As each of the optical adapters 20 and 20 on the apparatus side and the main line side, a double-core optical adapter 20A (see FIG. 3) or a single-core optical adapter 20B (see FIG. 4) having a structure described later is used.

The optical adapters 20 and 20 on the apparatus side and the main line side are optically connected by a relay optical fiber 30 in the hollow portion 10 a of the main body case 10.
As the relay optical fiber 30, it is preferable to use a thin, flexible and simple optical fiber core or an optical fiber. Since the relay optical fiber 30 is not subjected to stresses such as tension, twist, bending, and compression due to external force, it does not require a structure such as an optical fiber or an optical fiber cord used for outdoor wiring or indoor wiring, or a sheath. Therefore, a thin, flexible and simple optical fiber core or optical fiber can be used. Thus, the optical adapters 20 and 20 can be connected without difficulty in the limited hollow portion 10a in the main body case 10.
Ferrules 31 and 32 are attached to both ends of the relay optical fiber 30, and these ferrules 31 and 32 are plugged into the optical adapters 20 and 20.

[Basic structure of optical adapter 1: Two-core optical adapter]
FIG. 3 is a diagram showing an optical adapter (double-core optical adapter) having a configuration corresponding to a two-core optical fiber connector (hereinafter simply referred to as “double-core optical connector”), (a) is a perspective view, and (b). Is a longitudinal sectional view, and (c) is a transverse sectional view.

The two-core optical adapter 20A shown in the figure is configured to be connected to a two-core optical connector 40A as shown in FIG.
The two-core optical connector 40A shown in FIG. 6A is provided with two SC connectors 42, 42 arranged in the width direction at the connector connecting portion 41, and a ferrule 43, built in each of the SC connectors 42, 42. 43, the tips of optical fibers 44 and 44 are connected and fixed, respectively. That is, the two optical fibers 44 are fixed to the two-core optical connector 40A in a state where they are arranged in the width direction.

Here, the pitch (distance between the centers) of the two optical fibers 44 and 44 fixed to the two-core optical connector 40A, in other words, the pitch (distance between the centers) of the ferrules 43 and 43 built in each SC connector 42 and 42. Is set to L.
A guide projection 45 and a stopper groove (not shown) are formed on the surface of each SC connector 42, 42.

The two-core optical adapter 20 </ b> A includes an adapter main body 21, an internal connection latch member 22, and a shutter plate 23.
In the present embodiment, the adapter main body 21 has a quadrangular appearance, and the inside is a hollow portion that is open at both front and rear ends. As shown in FIG. 3C, the inside of the adapter main body 21 is partitioned by a partition wall 21a extending in the front-rear direction at the center in the width direction, whereby two connector connection portions 24, 24 are formed side by side in the width direction. Has been. Each connector connecting portion 24, 24 is formed in an internal shape to which the two-core optical connector 40A shown in FIG.
In addition, the latching convex part 25 is formed in the inner surface in the front-back direction center part of each connector connection part 24,24.

The internal connection latch member 22 includes a base portion 22a, a cylindrical portion 22b, a metal cylindrical sleeve 22c, and a latch piece 22d.
The base portion 22a is formed to have an outer dimension corresponding to the internal shape of the connector connection portion 24. The base portion 22a is fitted into the connector connection portion 24 from one opening and engages with the locking convex portion 25. Is disposed at the center in the front-rear direction.

  The cylindrical portion 22b is formed to extend in the axial direction at the central portion of the base portion 22a. A cylindrical cylindrical sleeve 22c is fitted into the cylindrical portion 22b. The cylindrical sleeve 22 c has a function of holding the ferrule of the optical connector inserted into the connector connecting portion 24.

  22 d of latch pieces are extended in the front-back direction from the part outside the cylindrical part 22b of the base 22a. The latch pieces 22d extend so that two at the front and two at the rear face each other with the base 22a as a boundary. The tip of each latch piece 22d is formed in a hook shape, and the SC connector 42 is held by engaging with a stopper groove (not shown) of the SC connector 42 into which the tip hook portion is inserted.

  As shown in FIG. 3B, the shutter plate 23 has a proximal end portion fixed to the front portion on one side surface in the thickness direction of the adapter main body 21, and extends in a curved manner into the connector connecting portion 24. Yes. The shutter plate 23 shields the front side of the cylindrical sleeve 22c in the front space of the connector connecting portions 24, 24. The shutter plate 23 has a spring property that can be flexibly bent. When the SC connector 42 is inserted into the connector connecting portion 24, the shutter plate 23 is pushed down by the SC connector 42 toward the inner side surface. Retreat from the 42 insertion track.

  On the other side surface in the thickness direction of the adapter main body 21, a notch portion 26 for insertion guide is formed from the edge toward the center portion, and the guide protrusion 45 of the SC connector 42 is engaged with the notch portion 26. Each SC connector 42 is appropriately inserted into the connector connecting portion 24. As described above, the SC connector 42 inserted into the connector connecting portion 24 while being guided by the notch portion 26 is held by fitting the ferrule 43 at the center of the distal end thereof to the cylindrical sleeve 22c.

[Basic structure of optical adapter 2: Single-core optical adapter]
4A and 4B are diagrams showing an optical adapter (single-core optical adapter) having a configuration corresponding to a single-core optical connector. FIG. 4A is a perspective view, FIG. 4B is a longitudinal sectional view, and FIG. 4C is a transverse sectional view. It is. In FIG. 4, the same or corresponding parts as those shown in FIG. 3 are given the same reference numerals, and detailed descriptions thereof are omitted.

  The single-core optical adapter 20B shown in FIG. 4 is configured to correspond to a single-core optical connector 40B as shown in FIG. 6B. A single-core optical connector 40B shown in FIG. 6B is composed of one SC connector 42, and the tip of one optical fiber 44 is connected and fixed to a ferrule 43 built in the SC connector 42. .

The single-core optical adapter 20 </ b> B also includes an adapter main body 21, an internal connection latch member 22, and a shutter plate 23. The adapter main body 21 has only one connector connection portion 24 formed therein, and therefore the width dimension of the adapter main body 21 is shorter than the two-core optical adapter 20A.
The connector connecting portion 24 is formed in an internal shape into which the single-core optical connector 40B shown in FIG.
The internal connection latch member 22 and the shutter plate 23 are disposed in the connector connection portion 24, the insertion guide cutout portion 26 is formed on one side surface in the thickness direction of the adapter body 21, and the like. This is the same as the two-core optical adapter 20A.

[Attachment structure of the optical adapter to the body case]
Returning to FIG. 3, looking at the external shape of the two-core optical adapter 20 </ b> A, both side surfaces 21 b and 21 b in the width direction of the adapter main body 21 are configured as flat surfaces without protruding portions.
The conventional optical adapter has mounting flanges protruding from both sides in the width direction (see Patent Document 1), and the flange becomes an obstacle, and the overall width of the optical outlet cannot be shortened. As described above, it has been difficult to cope with existing standardized wiring equipment mounting frames.
On the other hand, in the optical outlet of the present embodiment, the adapter main body 21 has an outer shape with no protruding portions on both side surfaces 21b and 21b in the width direction, so that each adapter inside the main body case 10 to which the adapter main body 21 is mounted is provided. About the attachment parts 11 and 12, the width dimension can be reduced, As a result, the width dimension of the whole optical outlet can be reduced and size reduction can be realized. Thus, the optical outlet of this invention which implement | achieved miniaturization can be easily adapted also to the standardized wiring fixture mounting frame 1. FIG.

  Further, the adapter main body 21 of the two-core optical adapter 20A is formed with a convex portion 27 extending in the width direction at the center of both side surfaces in the thickness direction. The convex portion 27 constitutes a locked portion for attaching the adapter main body 21 to the adapter mounting portions 11 and 12 formed in the main body case 10.

When the two-core optical adapter 20A shown in FIG. 3 is used as the optical adapter, each adapter mounting portion 11, 12 provided in the main body case 10 can accommodate the adapter main body 21 of the two-core optical adapter 20A. Set to internal dimensions.
As shown in FIG. 1, a concave portion 13 extending in the width direction is formed at the center portion of the opposing inner surface of each adapter mounting portion 11, 12. The concave portion 13 constitutes a locking portion to which the convex portion 27 of the adapter main body 21 is locked. With the engagement of the concave portion 13 and the convex portion 27, the two-core optical adapter 20 </ b> A It is attached to the adapter mounting portions 11 and 12.

  Also in the single-core optical adapter 20B shown in FIG. 4, both side surfaces 21b and 21b in the width direction of the adapter main body 21 are configured as flat surfaces without protruding portions. With this configuration, it is possible to reduce the width dimension of the adapter mounting portions 11 and 12 inside the main body case 10 to which the adapter main body 21 is mounted. As a result, the width dimension of the entire optical outlet is reduced and the size is reduced. Can be realized. Thus, the optical outlet of this invention which implement | achieved miniaturization can be easily adapted also to the standardized wiring fixture mounting frame 1. FIG.

  Further, the adapter body 21 is formed with a convex portion 27 extending in the width direction at the center of both side surfaces in the thickness direction, and this convex portion 27 is formed in the adapter mounting portion 11 formed in the main body case 10. , 12 is the same as the above-described two-core optical adapter 20A in that a locked portion for mounting the adapter main body 21 is configured.

  When the single-core optical adapter 20B is used as the optical adapter, the adapter mounting portions 11 and 12 provided in the main body case 10 are set to internal dimensions that can accommodate the adapter main body 21 of the single-core optical adapter 20B. The As described above, a concave portion 13 (locking portion) extending in the width direction is formed in the center portion of the inner surfaces of the adapter mounting portions 11 and 12 facing each other (see FIG. 1). The single-core optical adapter 20 </ b> B is attached to the adapter mounting portions 11 and 12 of the main body case 10 with the engagement with the convex portion 27 (the locked portion) formed on the adapter main body 21.

  In the present embodiment, in both the two-core optical adapter 20A and the single-core optical adapter 20B, the locked portion formed in the adapter main body 21 is a convex portion, while the locking portion formed in the main body case 10 is used. However, the present invention is not limited to this, and the locked portion may be a concave portion, while the locking portion may be a convex portion.

[Dimensions of single-core optical adapter 20B]
As shown in FIG. 5, the single-core optical adapter 20 </ b> B described above has a pitch between the optical fibers 44 inserted into the connector connection portions 24 of the single-core optical adapters 20 </ b> B in a state where two single-core optical adapters 20 </ b> B are arranged in contact in the width direction. However, the dimensional shape of the adapter body 21 is configured so that the pitch L is between the two optical fibers 44 fixed to the two-core optical connector 40A.

  If comprised in this way, the structure equivalent to 20 A of double optical adapters can be implement | achieved using the optical adapter 20B for single cores. Accordingly, it is possible to manufacture an optical outlet having a configuration suitable for the two-core optical connector 40A using only the single-core optical adapter 20B, and it is possible to reduce the number of parts.

The main body case 10 is formed with adapter mounting portions 11 and 12 having internal dimensions capable of accommodating two single-core optical adapters 20B arranged in the width direction, and facing the adapter mounting portions 11 and 12. A concave portion 13 (locking portion) extending in the width direction is formed at the central portion of the inner surface.
Each single-core optical adapter 20B is mounted by engaging the convex portion 27 (locked portion) with the concave portion 13, and at the same time arranged in the width direction as shown in FIG. 5 (a). Positioned. Therefore, the two single-core optical adapters 20B can be easily positioned and incorporated into the main body case 10, thereby improving workability.

[Assembly method of components of main body case 10 and optical outlet]
FIG. 7 is an exploded side sectional view showing components of the optical outlet.
The main body case 10 includes a device-side outer case 14, a main line-side outer case 15, a device-side inner fixing member 16, and a main line-side inner fixing member 17.
The apparatus-side outer case 14 and the main line-side outer case 15 are combined in a state in which the opposing openings are combined to form a hollow portion 10a therein.

  The device-side internal fixing member 16 is fixed to the inside of the device-side outer case 14 with a fastener such as a screw. The device-side adapter mounting portion 11 is formed between the inner surface of the device-side outer case 14 and the device-side internal fixing member 16. In the formation site, a recess 13 (locking portion) is provided opposite to both the device-side outer case 14 and the device-side internal fixing member 16.

  The main line side internal fixing member 17 is formed with an engaging protrusion having a claw at the tip, and by inserting this engaging protrusion into an engaging groove (not shown) provided in the main line side outer case 15, The main line side internal fixing member 17 is fixed inside the outer case 15. The main line side adapter mounting portion 12 is formed between the inner surface of the main line side outer case 15 and the main line side internal fixing member 17. The formation site is provided with recesses 13 (locking portions) facing both the main line side outer case 15 and the main line side internal fixing member 17.

Next, a method for assembling the optical outlet will be described.
First, the convex portion of the optical adapter 20 on the main line side is formed in the concave portion 13 (locking portion) formed inside the device-side outer case 14 and the concave portion 13 (locking portion) formed in the device-side internal fixing member 16. In a state where 27 (locked portion) is fitted, the device-side internal fixing member 16 is assembled inside the device-side external case 14. As a result, the device-side optical adapter 20 is attached to the main body case 10.

  Similarly, the recess 13 (locking portion) formed inside the main line side outer case 15 and the recess 13 (locking portion) formed in the main line side internal fixing member 17 are respectively connected to the optical adapter 20 on the device side. The device-side internal fixing member 16 is assembled to the inside of the device-side outer case 14 with the convex portions 27 (locked portions) fitted together. Thereby, the optical adapter 20 on the main line side is attached to the main body case 10.

  A relay optical fiber 30 is connected between the optical adapters 20 and 20. Then, the main body case 10 is formed by combining the device-side outer case 14 and the main line-side outer case 15. Thereby, the optical outlet of the structure shown in FIG. 1 is completed.

In addition, the unit comprised by the combination of the apparatus side outer case 14 and the apparatus side internal fixing member 16 is attached to the bottom part of the protective plate 18 (see FIG. 1). The protection plate 18 can be moved in and out of the main body case 10 at a position facing the opening of the device-side adapter mounting portion 11.
In other words, the protection plate 18 is constantly urged by the urging member 18a such as a coil spring, and protrudes from the main body case 10 with the urging force. Further, the protective plate 18 is provided with a stopper mechanism 18b. When the protective plate 18 is pushed into the main body case 10, it is fixed to the inside of the main body case 10 by acting on the stopper mechanism 18b. When the protective plate 18 is pushed in again from this state, the stopper mechanism 18b is released and the protective plate 18 protrudes from the main body case 10. This type of stopper mechanism is known, and for example, a latch device disclosed in Japanese Utility Model Laid-Open No. 63-165076 can be applied.

  The protection plate 18 has a function of preventing the dust-proof cap from falling off. That is, a dust-proof cap (not shown) can be fitted into the optical adapter 20 attached to the device-side adapter mounting portion 11 when not in use. If the dust-proof cap is fitted into the connector connecting portion 24 of the optical adapter 20 and the protective plate 18 is protruded, the protective plate 18 prevents the dust-proof cap from falling off.

In addition, this invention is not limited to embodiment mentioned above.
For example, in the above embodiment, the device side adapter mounting portion 11 and the trunk side adapter mounting portion 12 are formed in the main body case 10, and the optical adapters 20 and 20 are mounted on the adapter mounting portions 11 and 12, respectively. The optical adapters 20 and 20 are optically connected by the relay optical fiber 30. Among these, the main line side optical adapter is omitted, and the main line side optical fiber drawn from the outside is directly connected to the equipment side optical adapter. It is good.

  Furthermore, in the embodiment described above, the adapter main body 21 has a quadrangular appearance, but is limited to a quadrangular shape as long as the connector connecting portion 24 has the same shape and dimensions and can be fitted to the SC connector 42. It is not a thing.

It is side surface sectional drawing which shows the whole structure of the optical outlet concerning embodiment of this invention. It is side surface sectional drawing which shows the mounting state to the wiring fixture mounting frame of the optical outlet shown in FIG. It is a figure which shows the optical adapter for two cores, (a) is a perspective view, (b) is a longitudinal cross-sectional view, (c) is a cross-sectional view. It is a figure which shows the optical adapter for single cores, (a) is a perspective view, (b) is a longitudinal cross-sectional view, (c) is a cross-sectional view. It is a figure which shows the state which arranged two optical adapters for single cores, (a) is a perspective view, (b) is a cross-sectional view. (A) is a front view showing a two-core optical connector, (b) is a front view showing a single-core optical connector. It is side surface sectional drawing which decomposes | disassembles and shows the component of the optical outlet shown in FIG.

Explanation of symbols

1: Wiring fixture mounting frame 2: Decorative plate 10: Main body case 10a: Hollow portion 11: Equipment side adapter mounting portion 12: Trunk side adapter mounting portion 13: Recessed portion (locking portion)
14: Equipment side outer case 15: Main line side outer case 16: Equipment side inner fixing member 17: Main line side inner fixing member 18: Protection plate 18a: Biasing member 18b: Stopper mechanism 20: Optical adapter 20A: Two-core optical adapter 20B: Single-core optical adapter 21: Adapter main body 21a: Partition wall 21b: Side surface 22 in the width direction: Internal connection latch member 22a: Base portion 22b: Cylindrical portion 22c: Cylindrical sleeve 22d: Latch piece 23: Shutter plate 24: Connector connection portion 25: Locking convex part 26: Notch part 27: Convex part (locked part)
30: Relay optical fiber 31, 32: Ferrule 40A: Two-core optical connector 40B: Single-core optical connector 41: Connector connecting portion 42: SC connector 43: Ferrule 44: Optical fiber 45: Guide protrusion

Claims (8)

It is an optical outlet configured to be mounted on a wall surface of a room via a wiring fixture mounting frame whose dimensions are standardized by Japanese Industrial Standards, and whose width is restricted by the width of the wiring fixture mounting frame of the standard. And
A main body case having an adapter mounting portion formed therein, and an optical fiber adapter mounted on the adapter mounting portion,
The optical fiber adapter includes an adapter main body internally provided with a connector connection portion for connecting an SC connector, and an internal connection latch member.
The connector connecting portion has both front and rear ends opened, and a locking projection is formed on the inner side surface in the front and rear direction central portion.
The internal connection latch member is fitted into the cylindrical portion formed with an outer dimension corresponding to the internal shape of the connector connecting portion, a cylindrical portion formed extending in the axial direction at the central portion of the base portion, and the cylindrical portion. A cylindrical sleeve that holds the ferrule of the SC connector inserted into the connector connecting portion,
Further, the internal connection latch member is disposed at the center in the front-rear direction of the connector connection portion by the base portion being fitted into the connector connection portion from one opening and engaging with the locking projection.
And, in the adapter mounting portion of the main body case, forming a locking portion for locking the optical fiber adapter,
The adapter main body has a flat outer shape on both side surfaces in the width direction corresponding to the width direction of the main body case, and engages with the locking portion on the side surface in the thickness direction orthogonal to the both side surfaces in the width direction. A locked part is formed,
And, the adapter mounting portion comprises a device side adapter mounting portion that opens downward on the inner front side of the main body case, and a trunk side adapter mounting portion that opens obliquely downward on the inner back side of the main body case,
The optical fiber adapter is mounted on each adapter mounting portion in a posture in which the opening of the connector connecting portion faces,
Further, by attaching a ferrule to both ends of a relay optical fiber constituted by an optical fiber core or an optical fiber, and inserting each ferrule into the cylindrical sleeve of the optical fiber adapter attached to each adapter mounting portion, the relay optical fiber is An optical outlet that optically connects the optical fiber adapters attached to the adapter mounting portions.   The optical outlet according to claim 1, wherein the connector connecting portion of the optical fiber adapter is formed in a size and shape capable of inserting and connecting a two-core optical fiber connector in which two optical fibers are fixed in the width direction. While forming the locking portion formed in the adapter mounting portion in a concave or convex shape,
The optical outlet according to claim 1 or 2, wherein the locked portion of the adapter body is formed in a convex or concave shape that engages with the locking portion.   The optical outlet according to claim 1, wherein the connector connecting portion of the optical fiber adapter is formed in a size and shape capable of inserting and connecting a single optical fiber connector.   In a state where the two optical fiber adapters are arranged in contact with each other in the width direction, the pitch between the optical fibers inserted into the connector connection portion of each optical fiber adapter is the pitch between the two optical fibers fixed to the two-core optical fiber connector. The optical outlet according to claim 4, wherein the optical fiber adapter is configured. The adapter mounting portion is formed to have a width dimension that allows the two optical fiber adapters to be contacted in the width direction so that they can be mounted side by side, and locking for locking the adapter main body of each optical fiber adapter to the adapter mounting portion Forming part,
And, on the side surface in the thickness direction of the adapter body, a locked portion that engages with the locking portion is formed,
6. The positioning portion for positioning the adapter main body at an appropriate position of the adapter mounting portion when the two adapter main bodies are mounted side by side on the adapter mounting portion. Light outlet. While forming the locking portion formed in the adapter mounting portion in a concave or convex shape,
The optical outlet according to claim 6, wherein the locked portion of the adapter body is formed in a convex or concave shape that engages with the locking portion. The optical fiber adapter includes a shutter plate in the adapter body,
The shutter plate has a base end portion fixed to one front portion in the thickness direction of the adapter main body, and extends while curving into the connector connecting portion, and in the front side space of the connector connecting portion, The front of the cylindrical sleeve is shielded and has a spring property that can be elastically bent. When the SC connector is inserted into the connector connecting portion, it is pushed down by the SC connector toward the inner surface, 2. The optical outlet according to claim 1, wherein the optical outlet is retracted from the insertion track of the connector.

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