JP2014153381A - Optical transceiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical transceiver that does not float from a casing in a state where a tip part of a slide member pushing an engagement piece of a cage of a host device by a lateral protrusion so as to release an engagement with the cage when sliding along the casing is not operated to release the engagement.SOLUTION: An optical transceiver 1 has a slide member 7 that pushes outward the engagement piece by a lateral protrusion so as to release an engagement with an engagement piece of a cage of a host device when sliding along a casing. The slide member 7 has a depth-side protrusion part 73 that protrudes in a lower direction crossing a direction where the engagement piece is pushed, and a lower casing 5 has a depth-side guide groove 52 that accommodates the depth-side protrusion part 73. A movement of the depth-side protrusion part 73 in an outside direction of the casing is suppressed by the depth-side guide groove 52.

Description

  The present invention relates to an optical transceiver that is removably attached to a cage of a host device for optical communication.

  An optical transceiver for optical communication transmits and receives signal light via an optical connector of an optical cable. Some optical transceivers employ a pluggable mechanism that can be inserted into and removed from the cage of the host device, and various types of pluggable mechanisms have been proposed (for example, see Patent Documents 1 and 2). .

  FIG. 9 is a perspective view for explaining the pluggable mechanism of the optical transceiver disclosed in Patent Document 1. FIG. In the illustrated optical transceiver 100, the recess provided on the side wall and the engagement piece 202 formed on the side surface of the cage 201 of the host device 200 cannot be extracted from the cage 201. In addition, the optical transceiver 100 has a gripping member 101 and a slide member 102 so that the engagement can be released and the optical transceiver 100 can be taken out from the cage 201.

The gripping member 101 is used by a user to grip the member 101 and push the optical transceiver 100 forward, and is attached to an optical receptacle 103 to which an optical connector is attached.
The slide member 102 moves in conjunction with the gripping member 101 and is attached to the casing so as to be slidable in the longitudinal direction of the casing of the optical transceiver 100. Further, the slide member 102 has a protrusion 104 extending laterally at the end opposite to the gripping member 101 side. In a normal state, the protrusion 104 is received in the recess of the housing side wall that engages with the engagement piece 202 of the cage 201 so as not to protrude from the side wall, but the slide member 102 is slid forward. Then, it is pushed out and protrudes from the side wall.

  When the user operates the optical transceiver 100 with the gripping member 101 while the optical transceiver 100 is attached to the cage 201, the slide member 102 is slid in the forward direction in conjunction with the gripping member 101. The protrusion 104 is pushed outward. As a result, the engagement piece 202 of the cage 201 is pushed from the inside, the engagement between the engagement piece 202 and the housing side wall of the optical transceiver 100 is released, and the optical transceiver 100 can be extracted from the cage 201. .

US Patent Application Publication No. 2003/0171016 US Patent Application Publication No. 2012/0148198

  However, in the optical transceiver disclosed in Patent Document 1, that is, the optical transceiver 100 in FIG. 9, when a force in the width direction of the optical transceiver 100 is applied to the gripping member 101, the end of the slide member 102 on the protrusion 104 side. Part, that is, the tip end part is lifted from the side wall of the optical transceiver 100.

  When the optical transceiver 100 is to be inserted into the cage 201 with the tip of the slide member 102 floating in this manner, the slide member 102 does not fit inside the cage 201 but comes outside. If the insertion is completed as it is, the engaging piece 202 of the cage 201 cannot be pushed outward by the protrusion 104 even if the gripping member 101, that is, the slide member 202 is operated to the front, and the optical transceiver 100 Since the engagement between the side wall and the engagement piece 202 of the cage 201 is not released, the optical transceiver 100 cannot be removed from the cage 201. The same applies to the optical transceiver disclosed in Patent Document 2.

  The present invention has been made in view of the above circumstances, and when sliding along the housing, the engagement piece of the cage is moved by the side protrusion so that the engagement with the cage of the host device is released. It is an object of the present invention to provide an optical transceiver in which a tip portion of a slide member that pushes outward does not float from a housing in a state where the disengagement operation is not performed.

  The optical transceiver of the present invention has a slide member that pushes the engaging piece outward by a lateral protrusion so as to release the engagement with the engaging piece of the cage of the host device when sliding along the housing. The slide member has a convex portion protruding upward or downward intersecting the direction of pushing out the engagement piece, and the housing has a guide groove that accommodates the convex portion. It is characterized by suppressing that a convex part moves to the outside direction of a case.

  In the case where the casing is divided up and down across a circuit board for controlling the operation of the optical transceiver, the guide groove is formed in the upper or lower casing.

  According to the present invention, the slide member is provided with a convex portion that protrudes in a direction that intersects the direction in which the engagement piece is pushed out, and the housing is provided with a guide groove that accommodates the convex portion, and the guide groove allows the slide member to Since the protrusion is restrained from moving outward, it is possible to prevent the tip portion of the slide member from floating from the housing in a state where the engagement release operation is not performed.

It is an external view of an example of the optical transceiver of this invention. FIG. 2 is an exploded view of the optical transceiver of FIG. 1. It is a figure explaining how to remove the optical transceiver of FIG. 1 from the cage of the host device. It is a figure explaining how to remove the optical transceiver of FIG. 1 from the cage of the host device. It is a figure explaining a mode when the force pushed out to the width direction of an optical transceiver acts on the front-end | tip part containing the protrusion of a slide member. It is a figure explaining a mode when the force pushed out to the width direction of an optical transceiver acts on the front-end | tip part containing the protrusion of a slide member. It is a figure which shows the slide member of the other example of the optical transceiver of this invention. It is a figure which shows the upper housing | casing of the other example of the optical transceiver of this invention. It is a figure explaining the conventional optical transceiver.

FIG. 1 is an external view of an example of the optical transceiver of the present invention.
An optical transceiver 1 in FIG. 1 is a pluggable (hot-swap type) optical transceiver that is detachably attached to a host device for optical communication and has a signal light transmission / reception function.
The optical transceiver 1 protects a photoelectric conversion component having a photoelectric conversion function and a circuit board 2 on which a large number of electronic components are mounted with a casing 3, and the casing 3 is an upper casing with the circuit board 2 interposed therebetween. 4 and the lower housing 5. The upper housing 4 and the lower housing 5 are made of metal such as aluminum or zinc, or are made of resin.

The photoelectric conversion components in the housing 3 include an optical subassembly (TOSA: Transmitting Optical Sub-Assembly) that transmits an optical signal and an optical subassembly (ROSA: Receiving Optical Sub-Assembly) that receives an optical signal. Each of TOSA and ROSA is mounted with a light emitting element and a light receiving element which are photoelectric conversion elements, and is electrically connected to the circuit board 2 via a connecting member such as a flexible printed circuit board.
Electric signal processing, control, and the like for TOSA and ROSA are performed by an electronic circuit including electronic circuit components mounted on the circuit board 2. A connector portion for electrically connecting the optical transceiver 1 to the host device is provided at the back end of the circuit board 2 and is exposed from the housing 3.

  The optical transceiver 1 has a pull tab 8 in which a resin gripping member 6 and a slide member 7 made of sheet metal are integrated. For example, the gripping member 6 and the slide member 7 can be integrated by inserting the slide member 7 into the mold in advance and performing insert molding when the gripping member 6 is resin-molded.

  Details of each component of the optical transceiver 1 will be described with reference to FIG. FIG. 2 is an exploded view of the optical transceiver 1 of FIG. In FIG. 2, the illustration of the components inside the housing 3 is omitted because it is not related to the gist of the invention.

As shown in FIG. 2, the upper housing 4 has an optical receptacle 41 into which an optical connector of an optical cable for optical communication is inserted at one end. By attaching the optical connector to the optical receptacle 41, the optical fiber of the optical connector and the photoelectric conversion element in the TOSA or ROSA are optically coupled.
On the side wall 42 in the width direction of the upper housing 4, there is a slide surface 44 for the slide member 7 and a recess which is recessed inside the slide surface 44 and engages with an engagement piece (see reference numeral 202 in FIG. 9) of the host device. A slope 43 that continues from the slide surface 44 to the recess 43 is formed.

The lower housing 5 has a front side guide groove 51 and a back side guide groove 52 in the side part in which a front side convex part 72 and a back side convex part 73 (to be described later) of the slide member 7 are accommodated, respectively. It has a hole 53 into which the screw 9 is inserted.
These upper housing 4 and lower housing 5 are fixed by screws 9.
The gripping member 6 is for plucking the optical transceiver 1 toward the front, and has a handle portion 61 that is gripped by the user when peeping forward.

The slide member 7 that is integrally connected to the gripping member 6 slides along the longitudinal direction of the upper housing 4, and has a protrusion 71 that extends laterally at the end opposite to the gripping member 6 side. Is formed. Further, in a normal state, the slide member 7 has a distal end portion including the protrusion 71 that fits in the recess 43 of the side wall 42 of the upper housing 4 and the protrusion 71 does not protrude outward from the upper housing 4. Bending is performed in the vicinity of the tip portion. The protrusion 71 is for pushing out an engagement piece (see reference numeral 202 in FIG. 9) of the cage of the host device as will be described later.
When the slide member 7 is fitted into a slide member housing portion formed by the slide surface 44, the recess 43, the slope surface 45, and the like of the upper housing 4, the slide member 7 and the grip member 6 integrated with the slide member are integrated. Is attached to the housing 3.

  Furthermore, the slide member 7 has a downward direction that intersects the direction in which the engagement piece (see reference numeral 202 in FIG. 9) of the cage of the host device is pushed out, more specifically, a direction and a protrusion that intersect the slide direction of the slide member 7. The front side convex part 72 and the back side convex part 73 which protrude in the downward direction orthogonal to the protruding direction of 71 are provided on the front side and the back side, respectively.

  A method of removing the optical transceiver 1 composed of the above members from the cage of the host device will be described with reference to FIGS. 3A is a partially enlarged view of the optical transceiver 1 before the slide member 7 is slid by the detaching operation, and FIG. 3B is a partially enlarged view of the optical transceiver 1 after the slide. 4A is a partially enlarged view showing only the lower housing 5 and the slide member 7, and FIG. 4B is a partially enlarged cross-sectional view in the vicinity of the optical receptacle 41 of the optical transceiver 1.

  In the state where the optical transceiver 1 is attached to the cage of the host device, that is, in the state before the slide member 7 is slid by the removal operation using the gripping member 6, as shown in FIG. Is included in the recess 43 of the side wall 42 of the upper housing 4, and the protrusion 71 does not protrude outward from the upper housing 4. Then, the engagement piece (see reference numeral 202 in FIG. 9) of the cage of the host device and the rear wall 43a of the recess 43 of the upper housing 4 are engaged, and the optical transceiver 1 is latched in the cage of the host device. Is fixed.

  When the user checks the gripping member 6 to remove the latched optical transceiver 1 and the slide member 7 is slid forward, the tip portion including the protrusion 71 of the slide member 7 is moved to the upper casing 4. By sliding on the slope surface 44 (see FIG. 2) of the side wall 42, a force pushing outward is applied to the tip portion. At this time, the lower side of the front end portion of the slide member 7 is suppressed from being pushed outward by the rear side convex portion 73 and the rear side guide groove 52, whereas the upper side of the front end portion is outside. Therefore, the protrusion 71 is pushed out of the upper housing 4 as shown in FIG. Thereby, the engagement between the engagement piece (see reference numeral 202 in FIG. 9) of the cage of the host device and the rear wall 43a of the recess 43 of the upper housing 4 is released.

  After the disengagement, when the user further pulls the gripping member 6 forward, the front portion 73a of the rear side convex portion 73 of the slide member 7 shown in FIG. The front portion 52a of the slide member 7 shown in FIG. 4B comes into contact with the front wall 52a and the front portion 72a of the front side guide groove 51 of the lower housing 5 comes into contact with the front wall 51a. When the user further pulls the gripping member 6 forward after the contact, the optical transceiver 1 is taken out from the cage of the host device.

  With respect to the optical transceiver 1 as described above, a force in the width direction of the optical transceiver 1 is applied to the portion of the optical receptacle 41, and the force that pushes the tip portion including the protrusion 71 of the slide member 7 in the width direction is applied. The state when working will be described with reference to FIGS. 5A is a partially enlarged perspective view in the vicinity of the distal end portion of the slide member 7 of the optical transceiver 1, FIG. 5B is a partially enlarged perspective view in cross section of the vicinity of the distal end portion, and FIG. FIG.

  In the optical transceiver 1, when a force that pushes in the width direction of the optical transceiver 1 acts on the tip portion including the protrusion 71 of the slide member 7, as shown in FIG. 5 and FIG. The side surface 73 b comes into contact with the inner side surface 52 b of the back side guide groove 52 of the lower housing 5. Therefore, the protrusion 71 of the slide member 7 does not move outward in the normal state, that is, the tip portion of the slide member 7 does not float from the housing 3 except during the engagement releasing operation. Therefore, the optical transceiver 1 can be reliably attached to and detached from the host device cage.

  Another example of the optical transceiver of the present invention will be described with reference to FIGS. FIG. 7 is a partially enlarged perspective view of a slide member of another example of the optical transceiver of the present invention, and FIG. 8 is a partially enlarged perspective view showing a state in which the upper casing of the example is viewed from the back side, that is, the lower side. In addition, the same code | symbol is attached | subjected about the part similar to the optical transceiver 1 of FIG. 1, and the description is abbreviate | omitted.

  In the optical transceiver of this example, the optical transceiver 1 of FIG. 1 is different, and as shown in FIG. 7, the slide member 7 ′ intersects the direction of pushing out the engagement piece (see reference numeral 202 in FIG. 9) of the cage of the host device. And, more specifically, a rear-side convex portion 73 ′ that protrudes upward in a direction perpendicular to the sliding direction of the sliding member 7 ′ and the protruding direction of the protrusion 71 is provided on the back side.

  Also in the optical transceiver of this example, the casing is composed of an upper casing 4 'and a lower casing (not shown) in FIG. 8, but the structure of each is different from that of the optical transceiver 1 in FIG. Specifically, a guide groove 46 is formed on the back side of the upper housing 4 ′ in FIG. 8 to accommodate the back side convex portion 73 ′ provided on the upper side of the slide member 7 ′. In addition, a part of the slide surface 44, the recess 43, and the slope surface 45 of the upper housing 4 of the optical transceiver 1 of FIG. 1 is moved to the lower housing. That is, what corresponds to the slide surface 44 of the upper housing 4 of the optical transceiver 1 of FIG. 1 is divided by the divided slide surface 44 ′ of the side wall 42 ′ of the upper housing 4 ′ and the divided slide surface of the side wall of the lower housing. 1, which corresponds to the recess 43 of the optical transceiver 1 of FIG. 1, is constituted by a split recess 43 ′ on the side wall 42 ′ of the upper housing 4 ′ and a split recess on the side wall of the lower housing. The one corresponding to the slope surface 45 of one optical transceiver 1 is constituted by the divided slope surface 45 ′ of the side wall 42 ′ of the upper housing 4 ′ and the divided slope surface of the side wall of the lower housing.

  As described above, the slide surface 44, the recess 43, and a part of the slope surface 45 of the upper housing 4 of the optical transceiver 1 in FIG. 1 are moved to the lower housing. In order to form the guide groove for accommodating the part by die casting or resin molding, it is necessary to divide the mold into upper and lower parts, but simply by providing the guide groove in the upper casing 4 of the optical transceiver 1 Cannot be split up and down. A mold used for molding the upper housing 4 of the optical transceiver 1 in FIG. 1 is divided into left and right in the width direction of the optical transceiver 1.

  In the optical transceiver of this example, when a force that pushes in the width direction of the optical transceiver acts on the tip portion including the protrusion 71 ′ of the slide member 7 ′, the outer side surface 73 b ′ of the rear convex portion 73 ′ of the slide member 7 ′ , Abuts against the inner side surface 46a of the guide groove 46 of the upper housing 4 '. Therefore, the protrusion 71 ′ of the slide member 7 ′ does not move outward, that is, the casing formed of the upper casing 4 ′ and the lower casing except when the distal end portion of the slide member 7 ′ is disengaged. Will not float from. Therefore, this optical transceiver can be reliably attached to and detached from the cage of the host device.

DESCRIPTION OF SYMBOLS 1 ... Optical transceiver, 2 ... Circuit board, 3 ... Housing | casing, 4 ... Upper housing | casing, 5, 5 '... Lower housing | casing, 6 ... Holding member, 7, 7' ... Slide member, 8 ... Pull tab, 9 ... Screw 41 ... Optical receptacle, 42 ... Side wall, 43 ... Recess, 43 '... Split recess, 43a ... Rear wall, 44 ... Slide surface, 44' ... Split slide surface, 45 ... Slope surface, 45 '... Split slope surface 46 ... Guide groove 46a ... Inside surface 51 ... Front side guide groove 51a ... Front wall 52 ... Back side guide groove 52a ... Front wall 52b ... Inside surface 53 ... Hole 61 ... Handle portion 71 ... Protrusions, 72 ... Front side convex portions, 72a ... Front portions, 73, 73 '... Back side convex portions, 73a ... Front portions, 73b, 73b' ... Outer side surfaces.

Claims (2)

An optical transceiver having a slide member that pushes the engaging piece outward by a lateral protrusion so as to release the engagement with the engaging piece of the cage of the host device when sliding along the housing,
The slide member has a convex portion protruding upward or downward intersecting a direction of pushing out the engagement piece,
The housing has a guide groove for accommodating the convex portion,
An optical transceiver, wherein the convex groove is restrained from moving in the outer direction of the housing by the guide groove.   The said housing is divided | segmented up and down across the circuit board for controlling the operation | movement of the said optical transceiver, The said guide groove is formed in the said upper or lower housing. The optical transceiver according to 1.

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