JP2013045059A - Optical transceiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical transceiver which can be installed without interference even in the case that an installation position of the optical transceiver is restricted in a height direction.SOLUTION: The optical transceiver includes a housing 15 connected to an optical patch cord and a transceiver body 13 holding the housing. The transceiver body 13 and the housing 15 are configured to be separated from each other, and a coupling mechanism 16 for coupling both of them together is provided. The coupling mechanism 16 is configured so that the housing 15 can be coupled either in a normal posture along a center line common to the housing 15 and the transceiver body 13 or in a posture inverted at 180° from the normal posture.

Description

  The present invention relates to an optical transceiver, and more particularly to an optical transceiver in which the optical transceiver can be arranged even when there is a restriction in the height direction.

With the arrival of a full-fledged broadband and ubiquitous society, the amount of information traffic on the backbone and subscriber networks has increased dramatically, and a large-capacity and highly reliable optical communication system that can withstand various applications, such as optical transceivers. The demand for optical communication devices using optical fiber is increasing rapidly.
As the demand increases, a method of securing a large number of communication lines by mounting optical transceivers at a higher density on the device side is considered. For example, in order to mount optical transceivers at high density on the device side, optical transceivers are mounted side by side vertically.

  In addition, an optical device having an attachment / detachment mechanism that opens a target optical transceiver from a case in which the optical transceiver is mounted in a state where the transceiver is inserted into an adjacent main case and the optical connector is engaged with the transceiver. A transceiver is known (for example, see Patent Document 1).

JP 2005-317540 A

  In general, in an optical transceiver, a transceiver body in which a printed circuit board, a flexible substrate, an optical module, and the like are mounted and a housing for connecting an optical patch cord are integrally formed.

  However, when mounting an optical transceiver in which the transceiver body and the housing are integrated side by side as described above, for example, when the optical patch cord insertion position is at the center of the optical transceiver, and inserting the optical patch cord in both channels In the case of a form called CompactSFP that can be configured, if the upper and lower optical transceivers are configured to face each other, the connector part inserted in the housing interferes with the one inserted in the lower stage and the one inserted in the upper stage, Insertion may not be possible.

  Depending on the device, there may be a restriction in the height direction on the device side when the optical transceiver is used, such as when a front panel is disposed directly above the optical transceiver. In this case, there is a problem if the optical transceiver cannot be installed because the connector portion of the optical patch cord interferes with the front panel. As a result, the design must be changed.

  Further, the optical transceiver of Patent Document 1 is also one in which the transceiver body and the housing are integrated. In Patent Document 1, as described above, the target optical transceiver is changed from the case where the optical transceiver is mounted. The optical transceiver disclosed in Patent Document 1 has the above-described problems even though it has a detachable mechanism that opens.

  An object of the present invention is to solve the above-described problems, even if the position where the optical transceiver is installed is restricted in the height direction, the light that can be installed without interfering with the restricted device or the like. It is to provide a transceiver.

In order to achieve the above object, an optical transceiver of the present invention is an optical transceiver having a housing connected to an optical patch cord and a transceiver body holding the housing.
The transceiver body and the housing are divided into two parts and a connection mechanism for connecting the two is provided.
The coupling mechanism is configured such that the housing can be coupled in either a normal posture or a 180 ° inverted posture along a common center line between the housing and the transceiver body. To do.

Since the optical transceiver of the present invention is configured as described above, if the position where the optical transceiver is installed is restricted in the height direction, the housing is either in a normal posture or an inverted posture with respect to the transceiver body. It can be installed in the posture. As a result, even when the position where the optical transceiver is installed is restricted in the height direction, the optical transceiver can be mounted without interfering with the restricted device or the like.
In addition, the development of a new device can be designed more flexibly because the optical transceiver can be mounted regardless of the restrictions on the height direction.

1 is a general exploded perspective view showing an optical transceiver according to an embodiment of the present invention and showing a state where a transceiver main body and a housing are divided. FIG. It is a whole side view which shows the optical transceiver of the said embodiment. FIG. 3A shows a coupling mechanism that couples a transceiver main body and a housing constituting the optical transceiver of the embodiment, FIG. 3A shows a state in which the transceiver main body and the housing are separated, and FIG. FIG. 3C shows a state immediately before the connection, and FIG. 3C shows a state where the transceiver body and the housing are connected. It is a side view which shows the state which extracts the optical transceiver of the said embodiment from the state fixed to the main case. It is a top view along the VV line of FIG. It is a whole perspective view which shows the jig | tool for transceiver removal used when removing the optical transceiver of the said embodiment from a main case. It is a side view which shows the state just before mounting | wearing the optical patch cord with the optical transceiver of the said embodiment. It is a side view in which a housing shows a normal posture in the state where an optical patch cord was attached to an optical transceiver of the embodiment. It is a side view which shows the attitude | position which the housing reversed from the normal attitude | position in the state in which the optical patch cord was mounted | worn with the optical transceiver of the said embodiment.

  An embodiment of an optical transceiver according to the present invention will be described below with reference to FIGS.

  As the optical transceiver of this embodiment, for example, an SFP (Small Form-factor Pluggabe) transceiver is applied.

As shown in FIG. 1, the optical transceiver 10 is equipped with an optical patch cord 14 (see FIGS. 7 and 8, etc.).
The optical transceiver 10 of the present embodiment is divided into a transceiver main body 13 and a housing 15, and the transceiver main body 13 and the housing 15 are connected by a connecting mechanism 16.
Then, as shown in FIGS. 1 and 2 and the like, the housing 15 with respect to the transceiver main body 13 is reversed from the normal posture along the common center line CL between the transceiver main body 13 and the housing 15 by 180 degrees. In addition, it can be connected in two kinds of postures, such as a reverse posture as shown in FIG.
In FIG. 1, the diagonally lower left side is the front, the diagonally upper right side is the rear, the diagonally upper side is the upper side, and the diagonally lower side is the lower side.

  The transceiver body 13 is formed in a rectangular parallelepiped cylindrical shape by, for example, a thin steel plate. However, it may be made of synthetic resin. The transceiver body 13 is equipped with an optical module 11, a printed wiring board 12, and the like.

  Similarly to the transceiver body 13, the housing 15 is formed of, for example, a thin steel plate or a synthetic resin, and is partitioned by a partition portion along the longitudinal direction of the transceiver body 13 to form two openings 15A and 15A. Yes. The housing 15 is equipped with the optical patch cord 14 (see FIG. 4) inserted through the opening 15A.

  As shown in FIG. 1, an electric circuit and an electric circuit component (not shown) are mounted on the printed wiring board 12, and the optical module 11 is connected to the electric circuit.

  Here, the connection method between the electric circuit and the optical module 11 may be any method as long as the optical module 11 and the printed wiring board 12 can be connected, such as a flexible substrate or a lead wire. .

  The optical module 11 is an optical component including a laser diode as a light emitting element, a photodiode as a light receiving element, and a ferrule used for axis alignment with an optical fiber. For example, TOSA (Transmitter Optical SubAssembly), ROSA (Receiver Optical SubAssembly) and BOSA (Bi-directional Optical Sub Assembly).

The optical module 11 and the printed wiring board 12 are provided in the transceiver body 13 as described above.
The transceiver body 13 and the housing 15 are connected and fixed by the connecting mechanism 16, thereby configuring the SFP transceiver 10.

As described above, the coupling mechanism 16 is configured so that the housing 15 can be coupled to the transceiver body 13 in a normal posture (see FIGS. 1 and 2, etc.) or an inverted posture (see FIG. 9 and the like). Yes.
The coupling mechanism 16 includes engaging portions 17 formed on both side surfaces in the width direction of the transceiver body 13 and engaging holes 18 formed on both side surfaces in the width direction of the housing 15 and engaged with the engaging portions 17. It consists of and.

  As shown in FIG. 3, each engaging portion 17 includes a plate-like extending portion 17A extending from one end portion (housing 15 side) of the transceiver main body 13 to the housing 15 side, and the extending portion 17A. A key portion 17B is formed at the tip, and a part of the key portion 17B is bent inward at an acute angle (cross-sectional shape).

  In addition, the engagement holes 18 are formed on both side surfaces in the width direction of the housing 15 as described above, and are formed in rectangular holes into which the key portions 17B of the engagement portions 17 are inserted.

Here, a dimensional relationship between the engaging portion 17 and the engaging hole 18 will be described with reference to FIG.
When the width dimension of the extending part 17A of the engaging part 17 is w, the height dimension from the lower surface of the transceiver body 13 to the lower end surface of the extending part 17A, and the upper end face of the extending part 17A from the upper surface of the transceiver body 13 The height dimension up to is t.

On the other hand, the width dimension of the engagement hole 18 of the housing 15 is W, and the height dimension from the lower surface of the housing 15 to the lower end surface of the engagement hole 18 is T.
The width dimension W of the engagement hole 18 is set to be a predetermined dimension larger than the width dimension w of the extension portion 17A, and the key portion 17B of the extension portion 17A can be fitted with a margin.
In addition, the height dimension T from the lower surface of the housing 15 to the lower end surface of the engagement hole 18 is set to be larger than the height dimension t, and the extending portion 17A is substantially at the center in the width direction of the engagement hole 18. It comes to be located in the part.

  Since the dimensions in the height direction of the housing 15 and the transceiver body 13 are set as described above, the housing 15 is inverted from the normal posture shown in FIG. 2 and the like, and is inverted as shown in FIG. In the posture, the height dimension T from the lower surface of the housing 15 to the lower end surface of the engagement hole 18 corresponds to the height dimension t from the upper surface of the transceiver body 13 to the upper end surface of the extending portion 17A. Even if the housing 15 is inverted, it can be connected to the transceiver body 13.

Next, a state where the transceiver body 13 and the housing 15 are connected by the connecting mechanism 16 will be described.
FIG. 3A shows a state in which the transceiver main body 13 and the housing 15 are separated from each other. From this state, for example, the housing 15 is moved in the arrow S direction. Then, the distal end surface of the housing 15 comes into contact with the inclined surface of the key portion 17B of the engaging portion 17 and further moves forward so that the extension portion 17A and the key portion 17B of the engaging portion 17 are shown in FIG. The transceiver body 13 is expanded outward on the side surface side.

  When the housing 15 is further moved in the arrow S direction from the state shown in FIG. 3B, the tip of the key portion 17B is inserted into the engagement hole 18, thereby engaging the engagement as shown in FIG. The key portion 17B of the portion 17 and the engagement hole 18 are engaged, and as a result, the transceiver body 13 and the housing 15 are connected.

  To release the connection between the transceiver body 13 and the housing 15, that is, to disconnect the housing 15 from the transceiver body 13, for example, from the inside of the housing 15, the tip of the key portion 17 </ b> B is attached to the side surface side of the transceiver body 13 with a removal jig (not shown) This is done by pressing outward, disengaging the key portion 17B from the engagement hole 18, and pulling the housing 15 in the opposite direction to the arrow S direction in this state.

  As shown in FIG. 1, FIG. 2, etc., two fixing release holes 13 </ b> A are formed in the bottom surface 13 </ b> C of the transceiver body 13 on the front surface portion on the housing 15 side with an interval in the width direction of the transceiver body 13. These unlocking holes 13A are formed in a long rectangular shape along the longitudinal direction of the transceiver body 13 and penetrate the bottom surface 13C.

  The bottom surface 13C of the transceiver body 13 is provided with one protrusion 13B for fixing the case. The projection 13B is formed in a substantially quadrangular pyramid shape. As shown in FIG. 2, the surface corresponding to the bottom surface of the substantially quadrangular pyramid is orthogonal to the bottom surface 13C of the transceiver body 13, and one surface of the slope is formed on the transceiver body. 13 is fixed in contact with the bottom surface 13C. The protrusion 13B is formed at a substantially intermediate position between the two fixing release holes 13A and 13A and closer to the back side in the longitudinal direction of the transceiver body 13 from the fixing release holes 13A and 13A.

As shown in FIG. 4, the protrusion 13 </ b> B is inserted into a fixing hole 20 </ b> A formed in the main case 20 in order to attach and fix the optical transceiver 10 to the main case 20.
That is, a substantially rectangular through hole is formed in the bottom surface 20C of the main case 20, and this through hole constitutes the fixing hole 20A, and the transceiver body 13 of the optical transceiver 10 is inserted into the main case 20. The optical transceiver 10 is fixed to the main case 20 when the protruding portion 13B is fitted in the fixing hole 20A.
In FIG. 4, the optical module 11, the printed wiring board 12, and the like are omitted.

Further, as shown in FIGS. 6 and 7, a bellows portion 20 </ b> B that is partially projected in a convex shape is formed on the front surface (housing 15 side) of the fixing hole 20 </ b> A on the bottom surface 20 </ b> C of the main case 20. ing. The tongue 20B is used when the optical transceiver 10 is attached to and removed from the main case 20.
In FIG. 7, the optical module 11, the printed wiring board 12, and the like are omitted.

  That is, as shown in FIG. 4, when removing the optical transceiver 10 attached to the main case 20, first, a dedicated transceiver removal jig 25 is inserted into the two fixing release holes 13 </ b> A formed in the bottom surface 20 </ b> C of the transceiver body 13. 25A of the main case 20 is pressed downward by the tip portion 25A (shown by an imaginary line in FIG. 4).

  When the tongue 20B is pushed and the projection 13B of the transceiver body 13 is disengaged from the fixing hole 20A, the transceiver body 13 can be removed from the main case 20 by pulling the transceiver body 13 forward.

When the optical transceiver 10 attached to the main case 20 is removed as described above, when the optical transceiver 10 is attached to the main case 20, the transceiver body 13 of the optical transceiver 10 is inserted into the main case 20 and pushed in. Go on.
When the protrusion 13B of the transceiver body 13 reaches the entrance of the main case 20, the inclined surface of the protrusion 13B moves while pushing the tongue 20B downward. Then, when further moved, the tip of the inclined surface of the protrusion 13B fits into the fixing release hole 13A of the main case 20, and the optical transceiver 10 is fixed to the main case 20.

Next, the transceiver removing jig 25 will be described with reference to FIG.
The transceiver removal jig 25 is formed in a U-shape in a plane, and a hook-like protrusion 25B protruding in one direction is formed at the tip of the two opposing bar parts 25A and 25A.

  Then, the optical transceiver 10 is removed from the main case 20 by the transceiver removing jig 25 by inserting the transceiver removing jig 25 from the opening 15A of the housing 15 and inserting the protrusion 25B of the transceiver removing jig 25 into the main case 20. Hook the lock release hole 13A and lift the handle upward to push in the tongue 20B of the main case 20, disengage the protrusion 13B of the transceiver body 13 from the fixing hole 20A, and By pulling in the direction of arrow B, the optical transceiver 10 can be removed from the main case 20.

  In the present embodiment, as described above, the housing 15 can be set to the normal posture shown in FIGS. 1 and 2 and the inverted posture shown in FIG.

In other words, as described above, the optical transceiver 10 may have to be used in an environment where the height direction is restricted.
For example, as shown by a virtual line in FIG. 8, when a predetermined front panel 50 is arranged immediately above the optical transceiver 10, the optical transceiver 10 is installed in a normal posture as shown in FIGS. Further, the optical transceiver 10 cannot be mounted on the main case 20 because the lower sector portion 14A interferes with the front panel 50.
Therefore, the user removes the housing 15, rotates it 180 degrees, and re-fixes it to the main case 20 as shown in FIG. 9 to change the direction of the height direction, that is, set it to the inverted posture as described above. The patch cord 14 can be easily inserted. As a result, interference with the front panel 50 can be prevented.
8 and 9, the optical module 11, the printed wiring board 12, and the like are omitted.

According to the optical transceiver 10 of one embodiment having the above configuration, the following effects can be obtained.
(1) Even when the position where the optical transceiver 10 is installed is restricted in the height direction, the housing 15 can be mounted in a normal posture or an inverted posture, so that it interferes with a device that restricts the height direction. The optical transceiver 10 can be mounted without it. As a result, a large number of communication lines can be secured by mounting the optical transceiver 10 at a higher density.

(2) With regard to the development of a new device, the optical transceiver 10 can be mounted regardless of the restrictions on the height direction, so that it is possible to design more flexibly.

(3) The coupling mechanism 16 is composed of engaging portions 17 formed on both side surfaces of the transceiver body 13 in the width direction and engaging holes 18 formed on both side surfaces of the housing 15 in the width direction. When 15 is slid to the transceiver main body 13 side, the key portion 17B of the engaging portion 17 is fitted into the engaging hole 18 of the housing 15 so that both the members 13 and 15 are connected. The configuration is simple and the work is also easy.

(4) One protrusion 13B for fixing the case is provided on the bottom surface 13C of the transceiver body 13, and the protrusion 13B is opened in the main case 20 by inserting the transceiver body 13 into the main case 20 and sliding it. The transceiver body 13, that is, the optical transceiver 10 is fixed to the main case 20 by being fitted into the fixing hole 20 </ b> A. After the protruding portion 13B is fitted into the fixing hole 20A, the transceiver body 13 cannot be taken out unless the tongue portion 20B of the main case 20 is expanded, so that the optical transceiver 10 is securely fixed to the main case 20. can do.

(5) Since the housing 15 can be in a normal posture with respect to the transceiver body 13 and an inverted posture inverted by 180 degrees, a predetermined front panel 50 is disposed immediately above the optical transceiver 10, and in a normal posture Even when the installation conditions are such that the re-sector pull portion 14A provided in the optical transceiver 10 interferes with the front panel 50 and the optical transceiver 10 cannot be mounted on the main case 20, the housing 15 is removed and inverted 180 degrees, By fixing the main case 20 again, the patch cord 14 can be easily inserted by changing the direction of the height direction, and interference with the front panel 50 can be prevented. As a result, it is not necessary to change the design each time, and flexible handling becomes possible.

  The present invention has been described above with reference to the above embodiment, but the present invention is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention. In addition, the present invention includes a combination of some or all of the configurations of the above embodiments as appropriate.

  For example, in the above embodiment, the SFP transceiver is taken as an example, but this structure may be applied to an SFF transceiver. Similarly, this structure may be applied to CompactSFF and CompactSFP transceivers.

  In the embodiment, the transceiver removing jig 25 is formed in a bifurcated shape, that is, a planar U-shape, and has a hook-shaped protrusion 25B at the tip of the two opposing bar portions 25A and 25A. However, the present invention is not limited to this. For example, you may use a rod-shaped thing for using for single core SFP.

  Furthermore, in the above-described embodiment, the shape of the protrusion 13B of the transceiver body 13 is formed in a substantially quadrangular pyramid shape. However, the shape is not limited to this, and a protrusion having a plate material with a predetermined thickness formed in a right triangle shape is used. May be. If it is such a shape, manufacture is easy.

  In the embodiment, the coupling mechanism 16 is formed on the both side surfaces of the transceiver main body 13 in the width direction, and on both side surfaces of the housing 15 in the width direction, and the engagement portions 17. It is comprised with the engaging hole 18 to engage. However, the present invention is not limited to this, and a commercially available patch-on lock may be provided between the transceiver body 13 and the housing 15, and the patch-on lock may be used as a coupling mechanism.

(Appendix 1)
An optical transceiver having a housing connected to an optical patch cord and a transceiver body holding the housing.
The transceiver body and the housing are divided into two parts and a connection mechanism for connecting the two is provided.
An optical transceiver characterized in that the coupling mechanism is configured such that the housing can be coupled in either a normal posture or a 180 ° inverted posture along a common center line between the housing and the transceiver body.

(Appendix 2)
In the optical transceiver according to appendix 1,
An optical transceiver characterized in that the coupling mechanism is provided on both side surfaces in the width direction of the transceiver body and the housing in a dividing surface region of the transceiver body and the housing.

(Appendix 3)
In the optical transceiver described in appendix 2,
The coupling mechanism includes an engaging portion provided on both side surfaces in the width direction of the transceiver body and an engaging hole provided on both side surfaces in the width direction of the housing corresponding to the engaging portion. And optical transceiver.

(Appendix 4)
In the optical transceiver described in Appendix 3,
The engaging portion extends from one end portion of the transceiver body toward the housing, and is formed at a tip of the extending portion, and a part thereof is bent inward and engages with the engaging hole. An optical transceiver comprising a key part.

(Appendix 5)
In the optical transceiver according to any one of appendix 1 to appendix 4,
Providing a fixing protrusion protruding outward from the bottom surface portion of the transceiver body,
An optical transceiver characterized in that the transceiver main body having the housing can be fixed to the main case by engaging the fixing protrusion with a transceiver fixing hole formed in the main case for mounting the optical transceiver. .

(Appendix 6)
In the optical transceiver according to appendix 5,
The fixing protrusion is formed so that a cross-sectional shape thereof is a triangle, and one side of the triangle is orthogonal to the bottom surface, and the oblique side of the triangle is arranged to face away from the dividing surface. And optical transceiver.

(Appendix 7)
In the optical transceiver according to appendix 5 or appendix 6,
Providing two through-holes for taking out the transceiver formed on the side of the dividing surface of the bottom surface of the transceiver body at intervals in the width direction of the transceiver body;
A transceiver removal jig for removing the optical transceiver mounted on the main case using the through holes for taking out these transceivers is provided.
A shape having a bifurcated portion for inserting the transceiver removing jig into the transceiver extracting through hole and pressing a part of the bottom surface of the main case to release the engagement between the fixing protrusion and the main case An optical transceiver characterized by being formed into
A transceiver body in which an optical module and a printed wiring board are housed, and
The transceiver body is configured to include a housing that is detachably attached to one end of the length direction of the transceiver body and into which the optical patch cord can be inserted.
An optical transceiver characterized in that an engaging portion is provided between the transceiver body and the housing so as to freely engage and disengage the transceiver body and the housing.

  The present invention can be used when an optical transceiver is configured by connecting a housing to a transceiver body in a normal posture or an inverted posture.

DESCRIPTION OF SYMBOLS 10 Optical transceiver 11 Optical module 12 Printed wiring board 13 Transceiver main body 13A Fixing release hole 13B Protrusion part 14 Optical patch cord 15 Housing 16 Connection mechanism 17 Engagement part 17A Extension part 17B Key part 18 Engagement hole 20 Main case 20A For fixation Hole 20B Velcro part

Claims (7)

An optical transceiver having a housing connected to an optical patch cord and a transceiver body holding the housing.
The transceiver body and the housing are divided into two parts and a connection mechanism for connecting the two is provided.
The connection mechanism is configured such that the housing can be connected in any of a normal posture and a posture reversed 180 degrees from the normal posture along a common center line of the housing and the transceiver body. An optical transceiver characterized by that. The optical transceiver of claim 1.
An optical transceiver characterized in that the coupling mechanism is provided on both side surfaces in the width direction of the transceiver body and the housing in a dividing surface region of the transceiver body and the housing. The optical transceiver according to claim 2.
The coupling mechanism includes an engaging portion provided on both side surfaces in the width direction of the transceiver body and an engaging hole provided on both side surfaces in the width direction of the housing corresponding to the engaging portion. And optical transceiver. The optical transceiver according to claim 3.
The engaging portion extends from one end portion of the transceiver body toward the housing, and is formed at a tip of the extending portion, and a part thereof is bent inward and engages with the engaging hole. An optical transceiver comprising a key part. The optical transceiver according to any one of claims 1 to 4,
Providing a fixing protrusion protruding outward from the bottom surface portion of the transceiver body,
An optical transceiver characterized in that the transceiver main body having the housing can be fixed to the main case by engaging the fixing protrusion with a transceiver fixing hole formed in the main case for mounting the optical transceiver. . The optical transceiver of claim 5.
The fixing protrusion is formed so that a cross-sectional shape thereof is a triangle, and one side of the triangle is orthogonal to the bottom surface, and the oblique side of the triangle is arranged to face away from the dividing surface. And optical transceiver. The optical transceiver according to claim 5 or claim 6,
Providing two through-holes for taking out the transceiver formed on the side of the dividing surface of the bottom surface of the transceiver body at intervals in the width direction of the transceiver body;
A transceiver removal jig for removing the optical transceiver mounted on the main case using the through holes for taking out these transceivers is provided.
A shape having a bifurcated portion for inserting the transceiver removing jig into the transceiver extracting through hole and pressing a part of the bottom surface of the main case to release the engagement between the fixing protrusion and the main case An optical transceiver characterized by being formed into

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