JPH0735950A - Adapter holder - Google Patents

Abstract

PURPOSE:To provide the adapter holder common to adapters of various types relating to the adapter and more particularly the adapter holder to be used at the time of connecting optical fiber connectors to each other. CONSTITUTION:This adapter holder is constituted by having a main holder of an L shape or inverted T shape in side view consisting of a main plate part 51 with which a rectangular strip-shaped flange of the adapter 30 comes into tight contact and a mounting seat 52 which is disposed at the lower edge of the main plate part 51 and is seated and fixed to an optical device side member, a hole 53 disposed in the desired position of the main plate part 51 in order to be loosely inserted with the cylindrical part of the adapter 30, a pair of grooves 55 disposed in the main plate part 51 opposite to both right and left side of the holes 53 in such a manner that their respective one-side ends communicate with the hole 53, a rectangular strip-shaped member 71 in right contact with the surface on the side opposite to the surface with which the rectangular strip-shaped flange 36 comes into tight contact, an angular projecting part 72 fitting into a groove 55 disposed in the central part of the surface of the rectangular strip-shaped member 71 and a T-groove nut 70 having a screw hole 79 disposed at the center of the end face of the angular projecting part 72.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adapter used for connecting optical fiber connectors to each other, and more particularly to an adapter holder.

In an optical device such as an optical communication device, for example, an optical fiber connector is an important component that is detachably connected between optical fibers or between an optical fiber and an optical transmission / reception device.

3A and 3B are views of an optical device using an optical fiber connector. FIG. 3A is a perspective view and FIG. 3B is a perspective view of a main part. In FIG. 3, 5 is an optical device such as an optical communication device, and 6 is an optical device 5.
A printed wiring board having an optical transmission circuit and a light receiving circuit mounted in parallel with each other, 3 is an optical module containing a light emitting element and a light receiving element mounted on the printed wiring board 6, and 2 is an optical device 5 and an external device. Is an optical fiber which is a transmission path for connecting the optical fibers, and 20 is an optical fiber connector attached to the end of the optical fiber 2.

As shown in FIG. 3 (A), a plurality of printed wiring boards 6 are mounted in parallel on the back side of the optical device 5 so that they can be inserted and removed freely. The optical fiber connector 20 is plugged into the optical module 3 mounted on each printed wiring board 6, and the optical device 5 and the external device are connected via the optical fiber 2.

The optical device 5 is manufactured by the manufacturer and
Ship as a single unit. The optical fiber 2 provided by the customer at the installation site is generally plugged into the optical device 5.

Therefore, it is very difficult to directly connect the optical fiber 2, which is an external transmission line, to the optical module 3 at the installation site. Therefore, as shown in FIG. 3 (B), the optical module 3 and the optical fiber 2 are connected via the device side optical fiber 1.

More specifically, an optical fiber connector (optical fiber connector 10 shown in FIG. 4) is attached to one end of the device side optical fiber 1, and the other end of the device side optical fiber 1 is packaged in the optical module 3. The terminal is directly inserted into the package through the hole in the side wall, and the terminal is directly optically coupled to the light emitting element.

Further, another optical fiber connector is attached to one end of the other optical fiber 1 on the apparatus side, and the other end of the optical fiber 1 on the apparatus side is pulled into the package from the hole of the side wall of the package of the optical module 3. The terminal is directly optically coupled to the light receiving element.

Protective equipment 4 is provided on the hole of the package side wall.
To prevent the device side optical fibers 1 from being damaged and to fix the device side optical fibers 1 to the package.

On the other hand, an adapter holder 40 is attached in the vicinity of the front side edge of the printed wiring board 6, and a pair of adapters 30 are mounted on the adapter holder 40 so that their respective axes are directed to the outside of the optical device 5. ing.

The optical fiber connector 10 of the optical fiber 1 on the device side is plugged in and fixed to the fastening mechanism inside the adapter 30, and the optical device 5 is shipped. Then, at the installation site, the optical fiber connector 20 of the optical fiber 2 is plugged in to the fastening mechanism outside the adapter 30,
The device side optical fiber 1 and the optical fiber 2 are optically coupled.

[0012]

2. Description of the Related Art FIG. 4 is a diagram for explaining connection between optical fibers, FIG. 5 is a front view of an adapter, and FIG. 6 is a perspective view of a conventional adapter.

The adapter 30 includes a body portion 35 having an axial hole.
And a strip-shaped flange 36 provided substantially in the center of the body portion 35, and an external engagement element of the optical fiber connector 10 (a cap nut 12 in the figure) on the outer periphery of one end of the body portion 35.
Fastening mechanism part (screw part in the figure) 31 to which is engaged, and external engagement element (fukuro nut 22 in the figure) of the optical fiber connector 20 is engaged to the outer periphery of the other end of the body part 35 It has a mechanical portion (screw portion in the figure) 32.

Further, a screw hole 37 for inserting the neck portion of the screw 39.
Are drilled in the vicinity of both ends of the strip-shaped flange 36, respectively. As shown in detail in FIG. 6, the adapter holder 40 has an angled side view including a main body plate portion 41 to which the adapter 30 is fixed and a mounting seat 42 to be fixed to the printed wiring board 6.

A hole 43 into which the body portion 35 of the adapter 30 is loosely inserted is provided at a predetermined position of the main body plate portion 41, and a pitch equal to the pitch P of the screw hole 37 of the adapter 30 is provided on both left and right sides of the hole 43. Is provided with a screw hole 44.

The body portion 35 is loosely inserted into the hole 43 of the body plate portion 41,
The end face of the strip-shaped flange 36 is brought into close contact with the side face of the main body plate portion 41, the screw 39 is screwed into the corresponding screw hole 44, and the two adapters 30 are arranged and fixed to the adapter holder 40.

As described above, the ferrule 11 of the optical fiber connector 10 is inserted into the shaft center hole of the adapter 30 mounted on the adapter holder 40 from the fastening mechanism 31 side, and the external engaging element is engaged with the fastening mechanism 31. And plug the optical fiber connector 10 into the adapter 30.

Further, the ferrule 21 of the optical fiber connector 20 is inserted from the other fastening mechanism portion 32 side of the adapter 30,
The end face of the ferrule 21 is brought into abutting contact with the end face of the ferrule 11 of the optical fiber connector 10.

Then, the external engagement element of the optical fiber connector 20 is engaged with the fastening mechanism portion 32 to plug the optical fiber connector 20 into the adapter 30. In this way, the adapter 30
Since both ferrules are inserted in the axial center hole of, the axial centers of both ferrules (that is, the cores of the optical fibers) match with high precision without axial runout and axis deviation.

Therefore, the device side optical fiber 1 and the optical fiber 2 are optically coupled with high efficiency.

[0021]

By the way, in the optical fiber connector, due to the difference of the fastening means of the fastening mechanism, the J
Several types such as IS01 type, JIS02 type, JIS04 type, and foreign standards type are widely used.

Therefore, the adapter is equipped with a fastening mechanism corresponding to the type of the optical fiber connector, that is, J
FC type corresponding to IS01 type, D4 type corresponding to JIS02 type, SC type corresponding to S04 type, etc. are required.

Further, the type of the optical fiber connector adopted by the manufacturer of the optical device is generally different from the type of the optical fiber connector attached to the optical fiber provided by the customer.

For this reason, the optical device manufacturer
Type optical fiber connector is adopted,
If the 02 type optical fiber connector is used,
An adapter for connecting the device-side optical fiber 1 and the optical fiber 2 as a transmission line requires an FC type one and a D4 type one, that is, an FC / D4 type adapter.

That is, the adapter is FC / D4 type, FC / D
1 selected from several types such as SC type and FC / FC type
Seeds are used. FC / D4 type, FC / SC type,
In the FC / FC type, the screw 39 fixed to the adapter holder has the same screw diameter, but the pitch P of the screw holes is different.

On the other hand, in spite of the demand for a shorter delivery time of the optical device, the type of the optical fiber connector provided by the customer can hardly be confirmed by the optical device manufacturer side before the shipment of the optical device. Is.

Therefore, the device manufacturer is FC / D4.
Type, FC / SC type, FC / FC type and other types of adapters are procured in advance by the operator at the installation site in the required number. Then, as shown in FIG. 3 (B), the equipment manufacturer estimates the type of optical fiber connector that will be used, and for example, uses an FC / D4 type adapter as an adapter holder.
Attached to 40, the optical fiber connector of the optical fiber 1 on the device side
The optical device 5 is tested by plugging 10 into the adapter 30.

After the test, the optical device 5 is shipped with the optical fiber connector 10 plugged into the FC / D4 type adapter so that the optical fiber 1 on the device side is not damaged, and the model of the optical fiber connector provided by the customer is shipped. When is found,
At the installation site, the adapter (FC / D4 type adapter) mounted at the time of shipment is removed, and the adapter corresponding to the optical fiber connector, for example, FC / SC type is mounted on the adapter holder 40.

At this time, if the screw hole pitch for fixing the adapter 30 to the adapter holder 40 is different, the adapter holder at the time of shipment is replaced with another adapter holder having a compatible screw hole pitch. There was a problem that the adapter holder at the time of shipment could not be used and the cost was increased accordingly.

There is also a problem that it takes time to replace the adapter holder. The present invention was created in view of the above points, and an object thereof is to provide an adapter holder common to each type of adapter.

[0031]

In order to achieve the above object, the present invention is, as shown in FIG. 1, a main body plate portion 51 and an optical device side which are in close contact with a selected surface of a strip-shaped flange 36 of an adapter 30. It is provided with a main body of an L-shape or an inverted T-shape in a side view, which is composed of a mounting seat 52 formed on a lower edge of the main body plate portion 51 to be seated on a member.

Then, a hole 53 provided at a desired position of the main body plate portion 51 for loosely inserting the body portion of the adapter 30 and a main body plate so as to face left and right with the hole 53 sandwiched therebetween and one end of each of which communicates with the hole 53. And a pair of grooves 55 formed in the portion 51.

Further, a strip plate member 71 which is in close contact with the surface of the main body plate portion 51 which is in close contact with the strip flange member 36, and a groove 55 which is provided in the central portion of the surface of the strip plate member 71. Square protrusion 72 and a screw hole provided at the center of the end face of the square protrusion 72.
It has a T-slot nut 70 consisting of 79 and.

The T-slot nut 70 is movable to a desired position corresponding to the screw hole of the strip flange 36 in a state where the rectangular protrusion 72 is fitted in the groove 55. A screw 39 for fixing the adapter 30 is screwed into the screw hole 79.

Alternatively, as illustrated in FIG. 2, the adapter 30
Body plate part 61 where the strip-shaped flange 36 adheres to the selected surface
And an L-shaped or T-shaped body in a side view, which is composed of a mounting seat 62 formed on the lower edge of the body plate 61 to be seated on the optical device side member.

Then, a notch 66 formed in the main body plate portion 61 so that the upper edge side is open and is orthogonal to the upper edge, and having a width larger than the width of the body portion 35 of the adapter 30, and the left and right with the notch 66 sandwiched therebetween. Body plate so that one end of each is connected to the cutout 66.
61 has a pair of grooves 65 formed therein.

Further, a strip plate member 71 that is in close contact with the surface of the main body plate portion 61 to which the strip flange 36 is in close contact, and a groove 65 that is provided in the center of the surface of the strip plate member 71. And the screw hole 79 provided at the center of the end face of the rectangular protrusion 72.
And a T-groove nut 70 composed of

Further, an engaging member 68 is provided on the upper edge of the main body plate 61 so that the upper portion of the strip plate member 71 of the T-groove nut 70 is slidably engaged. The T-slot nut 70 is movable to a desired position corresponding to the screw hole of the strip flange 36 in a state where the rectangular protrusion 72 is fitted in the groove 55.
A screw 39 for fixing the adapter 30 is screwed into the screw hole 79.

[0039]

According to the present invention, the adapter is fixed to the holder by inserting the screw into the screw hole of the strip-shaped flange and screwing the screw into the T-groove nut engaged with the adapter holder. Further, the T-groove nut is slidably movable in a groove provided in the adapter holder.

Therefore, the pair of T-slot nuts can be easily moved to the positions corresponding to the pitches of the screw holes of the adapters of different types. That is, the adapter holder of the present invention is not only common to each type of adapter, but also the adapter replacement work is simple.

[0041]

The present invention will be described in detail with reference to the drawings. The same reference numerals denote the same objects throughout the drawings.

FIG. 1 is a view of an embodiment of the present invention, (A) is a perspective view, (B) is a sectional view, and FIG. 2 is a view of another embodiment of the present invention (A) is a perspective view. (B) is a sectional view. In the figure,
The adapter 30 of FC / D4 type, FC / SC type, FC / FC type, etc. is composed of a body portion 35 having an axial center hole, and a strip-shaped flange 36 provided substantially in the center of the body portion 35. Department
A fastening mechanism portion 31 to which an external engaging element of an optical fiber connector engages is provided on the outer circumference of one end of 35, and an external engaging element of another optical fiber connector is provided on the outer circumference of the other end of the body portion 35. Has a fastening mechanism section 32 to which is engaged.

In the vicinity of both ends of the strip-shaped flange 36 of the adapter 30, screw holes for inserting the necks of the screws 39 are formed. Reference numeral 50 denotes an adapter holder that includes a main body plate portion 51 that comes into close contact with the surface of the adapter 30 where the strip-shaped flange 36 is selected, and a mounting seat 52 in which the lower edge of the main body plate portion 51 is bent at a right angle.

By mounting the mounting seat 52 at a desired position of the printed wiring board 6 to be inserted into the optical device and screwing the mounting seat 52, the main body plate portion 51 is vertical to the printed wiring board 6, and the adapter is attached. The holder 50 is fixed to the printed wiring board 6.

The adapter holder 50 of the illustrated example is L-shaped when viewed from the side in which the lower edge of the main body plate portion 51 is bent at a right angle to provide the mounting seat 5, but the main body is arranged so that the mounting seat 52 is orthogonal. Of course, it may be fixed to the plate portion 51 to form an inverted T shape in a side view.

A hole 53 for loosely inserting the body portion 35 of the adapter 30 is provided at a desired position of the main body plate portion 51. The hole 53 is sandwiched between the holes 53 so as to oppose each other on the left and right sides, and one end of each hole communicates with the hole 53. A pair of desired long grooves 55 parallel to the upper edge of the main body plate portion 51 are provided.

Reference numeral 70 denotes a strip plate member 71 that is in close contact with the surface of the main body plate portion 51 that is in close contact with the strip flange 36, and a rectangular protrusion 72 that is provided at the center of the surface of the strip plate member 71. And the square protrusion
A T-slot nut consisting of a screw hole 79 provided at the center of the end face of 72.

The length of the vertical side of the rectangular protrusion 72 is slightly smaller than the width of the groove 55, and the protrusion height of the rectangular protrusion 72 is slightly smaller than the plate thickness of the main body plate 51. . Also,
The screw hole 79 provided at the center of the end face of the rectangular protrusion 72 is a screw hole into which the above-mentioned screw 39 for fixing the adapter 30 is screwed.

To fix the adapter 30 to the adapter holder 50 described above, first, the rectangular protrusions 72 are inserted into the respective grooves 55, and the end face of the strip plate member 71 is brought into close contact with the face of the main body plate portion 51. , T-slot nut 70 is attached to adapter holder 50.

Next, from the other surface of the main body plate portion 51, the adapter
One fastening mechanism portion 31 of 30 is inserted into the hole 53, the surface of the strip-shaped flange 36 is brought into close contact with the surface of the main body plate portion 51, and the screw 39 is inserted into the screw hole of the strip-shaped flange 36.

Then, the T-groove nut 70 is aligned by slidingly moving in the groove 55 so as to correspond to the screw hole of the strip-shaped flange 36. Then, the screw 39 is screwed into the screw hole 79 of the T-groove nut 70 to fix the adapter 30 to the adapter holder 50.

Therefore, like the one shown in FIG.
Insert the ferrule 11 of the optical fiber connector 10 into the shaft hole of the adapter 30 mounted on the adapter holder 50 from the fastening mechanism 31 side.
The optical fiber connector (10) is inserted into the adapter (30) by inserting the external engaging element into the fastening mechanism section (31).

Further, the ferrule 21 of the optical fiber connector 20 is inserted from the other fastening mechanism portion 32 side of the adapter 30,
The end face of the ferrule 21 is brought into abutting contact with the end face of the ferrule 11 of the optical fiber connector 10.

Then, the external engagement element of the optical fiber connector 20 is engaged with the fastening mechanism portion 32 to plug the optical fiber connector 20 into the adapter 30. Therefore, a pair of optical fibers in which different types of optical fiber connectors are attached to the terminals can be optically coupled by interposing the adapter 30.

On the other hand, two pairs of holes 53 and the like are provided in the main body plate portion 51, two adapters 30 are mounted in parallel on the left and right of the adapter holder 50, and one of the adapters 30 is provided with an optical fiber on the input side. The output side optical fibers are connected to the other adapter 30, respectively.

In FIG. 2, reference numeral 60 designates a main body plate portion 61 which is in close contact with the surface selected by the strip-shaped flange 36 of the adapter 30, and a mounting seat 62 in which the lower edge of the main body plate portion 61 is bent at a right angle. It is a different adapter holder.

By mounting the mounting seat 62 at a desired position of the printed wiring board 6 to be inserted into the optical device and screwing the mounting seat 62, the main body plate portion 61 is vertical to the printed wiring board 6, and the adapter is installed. The holder 60 is fixed to the printed wiring board 6.

A hole 53 for loosely inserting the body portion 35 of the adapter 30 is provided at a desired position of the main body plate portion 51. The hole 53 is sandwiched between the holes 53 so that the holes 53 face each other and one end of each hole communicates with the hole 53. A pair of grooves 55 are provided.

The body portion of the adapter 30 has a width such that the upper edge side is opened at a desired position of the main body plate portion 61 and is orthogonal to the upper edge.
A notch 66 is provided that is desirably larger than the width of 35. Then, in the vicinity of the bottom of the cutout 66, the main body plate portion 61 is arranged so that the cutout 66 is sandwiched between the left and right sides and one end of each of the left and right ends communicates with the cutout 66.
There is a pair of desired long grooves 65 parallel to the upper edge of the.

The groove 65 is a groove of a desired size into which the rectangular protrusion 72 of the T-groove nut 70 is inserted and slidably fitted. Further, the engaging member 68 is provided by bending the upper edge of the main body plate portion 61 downward by 180 degrees. The gap between the engaging member 68 and the main body plate portion 61 is slightly larger than the plate thickness of the strip plate member 71 of the T-groove nut 70.

In order to fix the adapter 30 to the adapter holder 60 described above, first, the T-slot nut 70 is cut vertically with the T-groove nut 70 in a vertical state.
Insert into 66. Then, the rectangular protrusion 72 is provided in the groove 65, and the strip plate member is formed.
The upper portion of 71 is inserted into the gap between the main body plate portion 61 and the engaging member 68, and the T-slot nut 70 is moved in the lateral direction.
Attach 70 to adapter holder 60.

Next, the body portion 35 of the adapter 30 is inserted into the notch 66 from the opening side so that the strip-shaped flange 36 is located on the other surface side of the main body plate portion 61, and the surface of the strip-shaped flange 36 is attached to the main body. The screw 39 is inserted into the screw hole of the strip-shaped flange 36 while closely contacting the surface of the plate portion 61.

Then, the T-groove nut 70 is aligned by slidingly moving in the groove 65 so as to correspond to the screw hole of the strip-shaped flange 36. Then, the screw 39 is screwed into the screw hole 79 of the T-groove nut 70 to fix the adapter 30 to the adapter holder 60.

Since the adapter holder 60 shown in FIG. 2 is provided with the engaging member 68, the T-groove nut 70 can be removed from the adapter holder 60 even when the adapter 30 is removed from the adapter holder 60. There is no advantage.

Further, since the body portion 35 of the adapter 30 is inserted from above from above the notch 66, as compared with the structure in which the fastening mechanism portion 31 side is inserted into the hole 53 shown in FIG.
This has an advantage that the attachment / detachment work of the adapter 30 is easy.

[0066]

As described above, according to the present invention, the T-slot nut is slidably engaged with the groove, and the adapter is mounted on the adapter holder using the T-slot nut. Since it can be commonly used for different types of adapters, it has an effect of contributing to cost reduction of the optical device.

Further, there is an effect that replacement work of the adapter is easy.

[Brief description of drawings]

FIG. 1 is a diagram of an embodiment of the present invention (A) is a perspective view (B) is a sectional view

FIG. 2 is a view of another embodiment of the present invention (A) is a perspective view (B) is a sectional view

FIG. 3 is a perspective view of the optical device.

FIG. 4 is a diagram for explaining connection between optical fibers.

[Figure 5] Front view of the adapter

FIG. 6 is a perspective view of a conventional example.

[Explanation of symbols]

1 Optical fiber on the device side 2 Optical fiber 3 Optical module 5 Optical device 6 Printed wiring board 10,20 Optical fiber connector 11,21 Ferrule 30 Adapter 31,32 Fastening mechanism part 35 Body part 36 Strip flange 37 Screw hole 39 Screw 40 , 50,60 Adapter holder 41,51,61 Body plate 42,52,62 Mounting seat 53 Hole 55, 65 Groove 66 Notch 68 Engagement member 70 T-slot nut 71 Strip plate member 72 Rectangular protrusion 79 Screw hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoyuki Hongo 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited

Claims (2)

[Claims] 1. A main body plate part (51) which is in close contact with a selected surface of a strip-shaped flange (36) of an adapter (30), and a lower edge of the main body plate part (51) for seating on an optical device side member. Mounting seat formed on
A side view L-shaped or inverted T-shaped main body composed of (52), a hole (53) provided at a desired position of the main body plate part (51) for loosely inserting the body part of the adapter (30), and the hole. (53) is sandwiched between the left and right sides and one end of each
3) so as to communicate with the pair of grooves (55) formed in the main body plate portion (51) and the surface of the main body plate portion (51) with which the strip-shaped flange (36) adheres. A strip plate member (71) closely attached to a surface, the strip plate member
It consists of a rectangular protrusion (72) provided in the center of the surface of (71) and fitted into the groove (55), and a screw hole (79) provided in the center of the end face of the rectangular protrusion (72). A T-slot nut (70) for screwing the strip-shaped flange (36) in a state where the rectangular protrusion (72) is fitted in the groove (55). The screw hole (79) is movable to a desired position corresponding to the hole, and the screw hole (79) is a screw (39) for fixing the adapter (30).
An adapter holder characterized by being screwed. 2. A main body plate portion (61) which is in close contact with a selected surface of the strip-shaped flange (36) of the adapter (30), and a lower edge of the main body plate portion (61) to be seated on a member on the optical device side. Mounting seat formed on
(62) is an L-shaped or inverted T-shaped body in a side view, and the body plate portion (6) is opened so that the upper edge side is open and is orthogonal to the upper edge.
The notch (66) formed in 1) having a width larger than the width of the body portion of the adapter (30) and the left and right opposite to each other across the notch (66), and one end of each notch (66). 66), the pair of grooves (65) formed in the body plate portion (61) and the surface of the body plate portion (61) to which the strip-shaped flange (36) adheres A strip plate member (71) closely attached to a surface, the strip plate member
It consists of a rectangular protrusion (72) provided in the center of the surface of (71) and fitted into the groove (65), and a screw hole (79) provided in the center of the end face of the rectangular protrusion (72). Engagement provided on the upper edge of the main body plate part (61) so that the T-slot nut (70) and the upper part of the strip plate member (71) of the T-slot nut (70) are slidably engaged. A member (68), the T-slot nut (70) is provided in the screw hole of the strip flange (36) in a state where the rectangular protrusion (72) is fitted in the groove (55). It is movable to a corresponding desired position, and the screw hole (79) has a screw (39) for fixing the adapter (30).
An adapter holder characterized by being screwed.