JP2006337727A - Optical transceiver and its latch mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate a taking-out operation by consolidating an operation for releasing the engaged state of a locking means and an operation for taking out an optical transceiver from a cage into one essentially continuous operation. <P>SOLUTION: An elastic piece 7 having a locking hole 6 is installed in a cage 2 on communication equipment side. A locking part 17, a latch releasing lever 37, and an operating lever 38 are installed in an optical transceiver 4. The latch releasing lever 37 is assembled freely movably forwards and backwards in a receptacle 11, with the front and rear ends projecting outward. The operating lever 38 is provided freely rotatably on the outside of the receptacle 11, actuating the latch releasing lever 37 by being rotated by a force in the direction of taking out the optical transceiver 4 from the cage 2, when the engaged state is released between the locking hole 6 and the locking part 17. Thus, the latch releasing lever 37 is moved to the rear, with the elastic piece 7 elastically deformed downward by a lock releasing part 37C provided to the rear end, thereby releasing the engaged state between the locking hole 6 and the locking part 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an optical transceiver used as a transmitter / receiver for high-speed optical communication such as an optical LAN (Local Area Network), and more particularly to an SFP type (Small Form-Factor Pluggable) that is detachably attached to a cage on a communication device side. The present invention relates to an optical transceiver and its latch mechanism.

  SFF (Small Form Factor) type optical transceiver standardized by MSA (Multi Source Agreement) agreed between optical communication equipment companies as an optical module for mutual conversion between digital electrical signals and optical signals in high-speed LAN And SFP type optical transceivers are widely used. Among these, the SFP type optical transceiver contains a photoelectric conversion element, a circuit board, and the like, and if it is detachably inserted into a cage installed on a board (for example, a motherboard) on the communication equipment side, Electrically and mechanically connected to the electrical interface connector of the optical device, thereby converting the optical signal transmitted / received to / from the optical fiber and the electrical signal transmitted / received to / from the substrate on the communication equipment side to each other to convert the light. Communication is enabled.

  Such an SFP-type optical transceiver may be interrupted if it is disconnected from the cage on the side of the communication device during operation or the communication device or the transceiver itself may break down. Therefore, the MSA standard prevents such an accident. For this reason, it is defined that the optical transceiver is securely locked to the cage by a latch mechanism (also referred to as a lock mechanism). As a specific structure of the latch mechanism, it is defined that the latch mechanism has a structure including a locking unit and a lock releasing unit that releases the engagement state of the locking unit. For this reason, various latch mechanisms having a simple structure and capable of easily attaching / detaching an optical transceiver have been proposed (see, for example, Patent Documents 1 to 4).

  The optical module locking mechanism described in Patent Document 1 includes a spring plate portion having a locking hole on the cage side, and a protruding locking portion that engages with the locking hole on the lower surface side of the optical module; An unlocking lever for releasing the engagement state between the locking hole and the lock portion is provided. The unlocking lever has a support shaft that is pivotably supported in the vertical direction, a knob that projects forward of the optical module, and a convex that is located near the lock. When the knob part is pushed up by the finger, it rotates, and the convex part presses the spring plate part of the cage from above and elastically deforms downward so that the engagement state between the lock part and the locking hole is released. It is configured. For this reason, when removing the optical module, the unlocking lever is rotated upward to release the engagement state between the locking hole and the lock portion, and the optical module is removed from the cage forward. There is a need to do.

  The locking mechanism of the optical module described in Patent Document 2 is provided with a locking hole on the cage side, and a lock member having a protruding lock portion that engages with the locking hole on the case lower surface side of the optical module. The optical fiber cable connector is inserted into and connected to the connection port of the case so that the connector operates the lock member to engage the lock portion with the locking hole. By pulling out from the connection port, the lock member returns to the original state and the engagement state between the locking hole and the lock portion is released. For this reason, when the optical module is taken out, it is necessary to first remove the optical fiber cable connector from the connection port of the optical module, then take out the optical module from the cage, and after removing the optical module, insert the connector into the original connection port again.

  The latch release mechanism of the optical fiber module described in Patent Document 3 is provided with first and second actuators on the lower surface side of the optical fiber module, and when the first actuator is operated, The actuator is configured to release the engaged state between the optical fiber module and the cage and pull the optical fiber module out of the cage by pulling the pull-out tab. For this reason, in order to take out the optical fiber module, two operations, that is, the operation of rotating the first actuator and the operation of taking out the optical fiber module from the cage as in the conventional apparatus described in Patent Document 1 described above. Need.

  The release mechanism of the SFP optical fiber module described in Patent Document 4 includes a spring plate portion having a locking hole on the SFP cage side, and the locking hole of the spring plate portion on the case lower surface side of the SFP optical fiber module. A latch (lock portion) that engages with the ejector and an ejector that can freely advance and retract are provided. The ejector is configured to release the engagement state between the latch hole and the latch by being elastically deformed downward by pushing the ejector when the optical fiber module is taken out. Then, when the SFP optical fiber module is released from the locking state by the release mechanism, it is pulled out from the SFP cage. In this case, the ejecting direction of the ejector and the removing direction of the optical fiber module are opposite to each other. Therefore, when removing the optical fiber module, two operations are performed: pushing the ejector and removing the optical fiber module from the cage. I need.

JP 2004-343506 A JP 2004-354866 A Special table 2004-533008 gazette US Pat. No. 6,434,015

  However, in each of the above conventional optical transceivers, the direction of the operating force applied to operate the unlocking component when releasing the locking state of the optical transceiver by the latch mechanism, and the optical transceiver after the release from the cage. Since the direction of the operating force applied at the time of taking out is different, there are two operations at the time of taking out, and there is a problem that the taking out operation is troublesome and takes time.

  In particular, the optical module described in Patent Document 1 is provided with an unlock lever on the lower surface side of the case so that the finger is unlocked when the optical module is grasped from above and below when inserted into the cage. Since the lever is pushed down and rotated in the locking direction, there is a problem that the optical module cannot be inserted into the cage because the locking portion hits the opening end surface of the cage. In addition, there is a problem that a spring for urging the unlocking lever in the return direction is required, and the number of parts increases.

  The optical module described in Patent Document 2 has a problem that the number of operations at the time of attachment / detachment increases by one in addition to the same problem as the optical module of Patent Document 1. That is, if the optical fiber cable connector is also used as the unlocking lever, two operations are required: an operation for removing the connector from the optical module and an operation for returning the optical module when the optical module is attached / detached.

  In the SFP optical fiber module described in Patent Document 4, since the push-in direction of the ejector and the take-out direction of the SFP optical fiber module are opposite to each other, the ejector is pushed with one finger at the time of take-out. While holding the engagement state of the lock part and the other two fingers, the SFP optical fiber module must be grasped and pulled out of the cage, making it difficult to use the fingers and skilled in taking out There was a problem of requiring.

  The present invention has been made to solve the above-described conventional problems. The object of the present invention is to simplify the structure and use the finger naturally, and to release the engagement state of the locking means and the light. It is an object of the present invention to provide an optical transceiver and a latch mechanism thereof that can easily and quickly perform the operation of taking out the transceiver from the cage as one substantially continuous operation.

  In order to achieve the above object, an optical transceiver according to a first aspect of the invention includes a receptacle portion having a connection port to which an optical connector plug is connected on the front surface, and an elastic deformation portion provided in a cage on the side of a communication device. An engaging portion that engages with the hole and an insertion portion that is inserted into the cage; and the elastically deforming portion of the cage is elastically deformed in a direction away from the engaging portion, whereby the locking hole and the engaging portion And a lever for operating the latch release lever. The latch release lever is provided on the lower side of the receptacle part so as to be movable back and forth, and the operation lever is operated. The lever operates the latch release lever by being rotated by an operating force in the same direction as the direction in which the insertion portion is removed from the cage.

  An optical transceiver according to a second aspect of the present invention is a connection for connecting the pair of support shafts to a pair of left and right support shafts pivotally supported by shafts on both side surfaces of the receptacle portion. The optical connector, and an operating portion and a pressing portion that extend upward and forward of the receptacle portion by being respectively extended to the connecting portion, and a plug recess formed in the connecting portion. The plug is inserted into the connection port of the receptacle through the plug recess.

  In the optical transceiver according to a third aspect of the invention, the latch release lever is located in front of the receptacle part and pressed by the pressing part of the operation lever, and is located on the lower surface side of the insertion part. And a latch releasing portion that elastically deforms the elastically deforming portion of the cage in a direction away from the engaging portion.

  An optical transceiver latch mechanism according to a fourth aspect of the invention is an optical transceiver latch mechanism for detachably locking an optical transceiver with respect to a cage on the side of a communication device, and elastic deformation having a locking hole provided in the cage. A receptacle portion to which an optical connector plug of the optical transceiver is connected, an engaging portion that projects from a lower surface side of an insertion portion that is inserted into the cage of the optical transceiver, and engages with a locking hole of the cage A latch release lever that is provided on the lower side so as to be movable back and forth, and that elastically deforms the elastic deformation portion in a direction away from the engagement portion, thereby releasing the engagement state between the engagement hole and the engagement portion; An operation lever rotatably provided on the receptacle portion, and the operation lever has a direction to take out the insertion portion of the optical transceiver from the cage. By being rotated by the direction of the operation force, in which operating the latch release lever.

In the first and fourth aspects of the present invention, the direction of the operating force applied to the operating lever is the same as the direction in which the optical transceiver is taken out from the cage. If an operation force in the same direction is continuously applied to the operation lever even after the engagement state is released, the operation force acts as a force for removing the optical transceiver from the cage, and the latch mechanism unlocking operation and the optical transceiver removal are performed. The operation can be performed in one substantially continuous operation. Therefore, the optical transceiver can be taken out with one finger hooked on the operation portion of the operation lever without holding the optical transceiver with two fingers, and the optical transceiver can be taken out easily and quickly.
In the present invention, when the operation force is removed from the operation lever, the elastic deformation portion on the cage side is elastically restored and the latch release lever is restored to the original position. Therefore, a return spring is provided on the latch release lever. There is no need to reduce the number of parts.

  In the second invention, since the operation portion of the operation lever extends above the receptacle portion, it is only necessary to hook one finger from the top and pull it forward when unlocking, and the finger can be used naturally. Can be easily taken out.

  In the third invention, when the latch release lever operates in conjunction with the operation lever, the latch release portion presses the elastic deformation portion of the cage to elastically deform it, and the engagement between the locking hole and the engagement portion Since the state is released, the operator does not need to manually operate the latch release lever, and the optical transceiver can be easily taken out.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
1 is an external perspective view of an optical transceiver according to the present invention, FIG. 2 is a plan view of the optical transceiver, FIG. 3 is a right side view showing a part of the optical transceiver, and FIG. FIGS. 5A and 5B are perspective views of the operation lever, and FIGS. 6A to 9B are diagrams for explaining the attaching / detaching operation of the optical transceiver to the cage.

  In this embodiment, an OLT (Optical Line Termination: an optical subscriber system station side device) as a communication device and an ONU (Optical Network Unit: an optical subscriber system) are drawn into the subscriber's home to provide a user network interface. The example used for the optical communication between circuit termination devices) is shown.

  In these drawings, 1 is an OLT-side motherboard, 2 is a cage arranged in parallel on the motherboard 1 via a spacer 3, 4 is an optical transceiver, and 5 is an optical fiber.

  The cage 2 constitutes an insertion guide slot for the optical transceiver 4 and is formed in a box shape having a rectangular section that is long in the front-rear direction with the front side (left side in FIG. 1) opened by bending a thin stainless steel plate. An electrical interface connector (not shown) is provided in the interior. At the center of the front edge of the bottom plate 2A of the cage 2, an elastic piece (elastic deformation portion) 7 having a locking hole 6 is formed. The elastic piece 7 is formed in the shape of a tongue piece that is long in the front-rear direction in which both side edges are separated from the bottom plate 2A by the formation of a pair of left and right long grooves 8a, 8b and the rear end is connected to the bottom plate 2A. Further, the elastic piece 7 has a shape of “he” in a side view, whereby the front end portion 7a is bent downward, and the locking hole 6 is formed in the rear portion 7b from the front end portion 7a. ing. The top of the elastic piece 7 is located in the cage 2 and the front end is located below the cage 2.

  The optical transceiver 4 is of the SFP type stipulated by the MSA, and consists of a single-core bidirectional optical transceiver that transmits and receives with a single optical fiber 5 and is removable from the front opening 9 of the cage 2. And a receptacle portion 11 provided on the front end side of the insertion portion 10. Therefore, the direction in which the optical transceiver 4 is taken out from the cage 2 is the forward direction of the cage 2. The insertion part 10 is comprised by the rectangular case 13 long in the front-back direction formed by the bending process of the stainless steel thin plate, and accommodates the circuit board 14 inside. The cross-sectional shape orthogonal to the longitudinal direction of the case 13 is formed in a similar shape slightly smaller than the cross-sectional shape orthogonal to the longitudinal direction of the cage 2.

  A front end portion 27A of the upper plate 27 constituting the case 13 forms an upper surface of the receptacle portion 11, and a pair of left and right elastic pieces is provided in a rear portion (hereinafter referred to as a rear end portion) 27B from the front end portion 27A. 15 (FIG. 2) is formed. These elastic pieces 15 are formed in the shape of a tongue that is long in the front-rear direction in which the front end edge and the left and right side edges are separated from the upper plate 27 by the formation of the U-shaped long groove 16 and only the rear end edge is connected to the upper plate 27. Has been. The elastic piece 15 protrudes upward from the case 13 in a natural state by being plastically processed into a mountain shape when viewed from the side. When the insertion portion 10 is inserted into the cage 2, it is pressed against the lower surface of the upper plate 2B of the cage 2. It is formed to be. For this reason, when the insertion part 10 of the optical transceiver 4 is inserted into the cage 2, it is pressed against the bottom plate 2 </ b> A of the cage 2 by the elastic force of the elastic piece 15, thereby preventing the vertical and horizontal movement.

  On the other hand, the front end portion 28A of the lower plate 28 of the case 13 forms the lower surface of the receptacle portion 11, and the cage 2 is located closer to the front end of a rear portion (hereinafter referred to as rear end portion) 28B than the front end portion 28A. A projecting engaging portion 17 (FIG. 1) that engages with the locking hole 6 is bent downward. The locking hole 6 and the engaging portion 17 constitute locking means 36 of a latch mechanism 40 (described later) that detachably locks the optical transceiver 4 with respect to the cage 2. Reference numeral 18 denotes a punched hole formed in the rear end portion 28B of the lower plate 28 in order to form the engaging portion 17.

  The circuit board 14 is mounted with a light emitting element (for example, a semiconductor laser) 20 and a light receiving element (for example, a phototransistor) 21 as an photoelectric conversion element, an amplifier, and the like on the front end side, and a rear end portion of the circuit board 14 at the cage 2. The card edge connector 22 is configured to be electrically and mechanically connected to the internal electrical interface connector. The card edge connector 22 is located in an opening 23 formed at the rear end of the case 13 and is electrically connected to the terminal when inserted into the electrical interface connector on the cage 2 side. The ground circuit of the circuit board 14 is electrically connected to the case 13.

  The receptacle 11 of the optical transceiver 4 incorporates part of the circuit board 14, the light emitting element 20, the light receiving element 21, an amplifier, and the like, and an optical connector plug (holding one end of the optical fiber 5). At a portion to which an optical fiber cable connector) 24 is connected, a holder 25 attached to the front end portion of the insertion portion 10 is provided.

  The holder 25 has a width and height larger than the width and height on the rear end side of the case 13 made of synthetic resin, and is formed in a U-shaped frame body that is open vertically and rearward. Therefore, the holder 25 includes a front plate 25A and a pair of left and right side plates 25B and 25C, and has an upper surface side opening 26a, a lower surface side opening 26b, and a back surface side opening 26c. The holder 25 is fitted to the front end portion of the case 13 so that the upper surface thereof is flush with the upper surface of the case 13 and is fixed by two screws 30.

  An upper surface side opening 26 a of the holder 25 is covered with a front end portion 27 </ b> A of the upper plate 27. The lower surface side opening 26 b of the holder 25 is covered with the front end portion 28 </ b> A of the lower plate 28. The front end portion 28A of the lower plate 28 is located below the rear end portion 28B and forms the same plane as the lower surface of the holder 25. Therefore, a bent portion 29 (FIG. 4) having an insertion hole 39 is provided at the boundary between the front end portion 28A and the rear end portion 28B of the lower plate 28. The front end portion of the case 13 is inserted into the back side opening 26 c of the holder 25.

  A connection port 33 into which the optical connector plug 24 is inserted and connected is provided near the upper left end portion of the front plate 25A of the holder 25. When the optical connector plug 24 is inserted and connected to the connection port 33, the optical fiber 5 is optically coupled to the light emitting element 20 and the light receiving element 21 in the receptacle 11 so that optical signals can be transmitted and received. The end of the optical fiber 5 opposite to the optical transceiver 4 side is connected to the ONU. A rectangular recess 34 is formed on the front surface of the front plate 25A below the right end. The recess 34 communicates with the inside of the holder 25 through a groove 35 formed on the lower surface of the front plate 25A.

  A latch release lever 37 and an operation lever 38 that constitute the latch mechanism 40 together with the locking means 36 are attached to the receptacle portion 11.

  The latch release lever 37 is formed by bending a stainless steel thin plate, so that a main body 37A (FIG. 4) that is long in the front-rear direction, a pressed portion 37B that is integrally provided at the front and rear ends of the main body 37A, and The latch release part 37C (FIG. 3) is provided, and is attached to the lower side of the holder 25. The main body 37A is accommodated in the holder 25 so as to be movable in the front-rear direction along the upper surface of the front end portion 28A of the lower plate 28, and the front end portion passes through the groove portion 35 of the front plate 25A. Projects forward. The pressed portion 37B is bent and formed substantially vertically upward at the front end of the main body 37A, and has a size that can enter the concave portion 34 of the front plate 25A. The recessed portion 34 restricts the rearward movement of the latch release lever 37 when the pressed portion 37 contacts the inner wall surface. The latch release portion 37C is formed to be bent obliquely upward at an angle of approximately 45 ° at the rear end of the main body 37A, and protrudes rearward of the holder 25 from the insertion hole 39 provided in the bent portion 29 of the lower plate 28. ing. The latch release portion 37 </ b> C is positioned in front of the engaging portion 17 of the case 13 and is in contact with the lower surface of the rear end portion 28 </ b> B of the lower plate 28.

  The operating lever 38 is formed by bending a stainless steel thin plate in the same manner as the latch releasing lever 37, so that the left and right plates 25B and 25C of the holder 25 are pivotally supported by the shaft 44 so as to be rotatable. A pair of support shaft portions 38A, 38A, a connection portion 38B that is positioned in front of the receptacle portion 11 and connects the front ends of the pair of support shaft portions 38A, 38A, and an upper and lower edge of the connection portion 38B are integrally extended. The operation unit 38C and the pressing unit 38D are configured. A plug recess 45 that prevents interference between the optical connector plug 24 and the connecting portion 38B when the operation lever 38 is rotated is formed on the left end side of the connecting portion 38B. The operation portion 38C extends above the holder 25, and a hook portion 46 (FIGS. 3 and 5) for improving the hooking of a finger is formed at the tip. The pressing portion 38D is positioned in front of the receptacle portion 11 and in front of the pressed portion 37B of the latch release lever 37, and presses the pressed portion 37B at the lower end when the locking means 36 is released. A pair of left and right pressing pieces 47 are integrally protruded rearward. The crossing angle between the operating portion 38C and the pressing portion 38D is 120 °, and the maximum turning angle α (FIG. 8) of the operating lever 38 is about 26 °. Further, the operating lever 38 has a rotation range of the operating portion 38C limited within the upper region of the receptacle portion 11. When the operating lever 38 is not used, the operating portion 38C has the receptacle portion 11 as shown by a solid line in FIG. It is preferable to keep the latch release lever 37 in a free state by contacting the upper surface.

  Next, an attaching / detaching operation of the optical transceiver 4 having the above structure with respect to the cage 2 will be described with reference to FIGS. FIG. 6 is a view showing a state where the insertion portion 10 of the optical transceiver 4 is inserted into the cage 2 halfway. When the optical transceiver 4 is mounted, the receptacle part 11 is grasped from the vertical direction by two fingers, for example, the thumb 100 and the index finger 101, and the insertion part 10 is inserted into the cage 2. When the receptacle part 11 is grasped from the vertical direction by the thumb 100 and the index finger 101, the operation part 38 </ b> C of the operation lever 38 is pressed against the upper surface of the receptacle part 11 by the index finger 101.

  As shown in FIG. 7, when the entire length of the insertion portion 10 is inserted into the cage 2, the rear end surface of the holder 25 comes into contact with the front-side opening end surface of the cage 2 and further insertion is prevented. When the insertion portion 10 is inserted into the cage 2, the engaging portion 17 rides on the front end portion 7 a (FIG. 1) of the elastic piece 7 and passes through the top portion, and engages with the locking hole 6, thereby bringing the optical transceiver 4 into the cage 2. Lock. When the insertion portion 10 is inserted into the cage 2 and the engagement portion 17 is engaged with the locking hole 6, the card edge connector 22 (FIG. 1) of the circuit board 14 is electrically and mechanically connected to the electrical interface connector in the cage 2. Thus, the optical connector 4 is detachably attached to the cage 2. In this mounted state, the pair of elastic pieces 15 provided on the upper surface side of the case 13 are in pressure contact with the lower surface of the upper plate 27 of the cage 2, and the insertion portion 10 is pressed against the bottom plate 28 by its elastic force. The transceiver 4 is firmly fixed to prevent the vertical and horizontal movement.

  When the optical transceiver 4 attached to the cage 2 is taken out, the index finger 101 is hooked on the hanging portion 46 of the operating portion 38C of the operating lever 38 as shown in FIG.

  When the operating portion 38C of the operating lever 38 is pulled forward by the index finger 101, the operating lever 38 rotates counterclockwise in FIG. 8 about the shaft 44, and the pressing element 47 of the pressing portion 38D moves the latch releasing lever 37. The pressed part 37B is pressed. For this reason, the latch release lever 37 moves rearward along the upper surface of the front end portion 28 </ b> A of the lower plate 28 to insert the latch release portion 37 </ b> C into the cage 2. Then, when the operation lever 38 rotates by the maximum angle (α), the latch release lever 37 moves backward by the maximum stroke, and the pressed portion 37B is pressed against the inner wall surface of the recess 34 (FIG. 1) of the front plate 25A. Is stopped, and further movement is restricted. When the latch release portion 37C of the latch release lever 37 is inserted into the cage 2 by a predetermined amount, the latch release portion 37C hits the elastic piece 7 and elastically deforms it downward to engage the locking hole 6 with the engagement portion 17. Is released. FIG. 8 shows this state.

  Even after the latch release lever 37 is operated by the rotation of the operation lever 38 to bend the elastic piece 7 downward and the engagement state between the engagement hole 6 and the engagement portion 17 is released, the engagement of the operation lever 38 is maintained. When the index finger 10 hooked on the portion 46 is further pulled forward, the optical transceiver 4 is gradually pulled out from the cage 2 as shown in FIG. 9, and the card edge connector 22 of the circuit board 14 is connected to the electrical interface connector in the cage 2. Deviate from. Therefore, the optical transceiver 4 can be taken out from the cage 2. At the time of taking out, it is not always necessary to hold with two fingers, but it is preferable to support the lower surface of the receptacle portion 11 with the thumb 100 in order to prevent the optical transceiver 4 from tilting. When the optical transceiver 4 is removed from the cage 2, the elastic pieces 7 and 15 are restored to their original states.

  As described above, in the present invention, when the engagement state between the locking hole 6 and the engaging portion 17 is released, the direction of the force for rotating the operation lever 38 is set to the front, and the optical transceiver 4 is taken out from the cage 2. Therefore, when the optical transceiver 4 is taken out, by continuing to apply a force in the direction of taking out the optical transceiver 4 to the operation portion 38C of the operation lever 38, the latch release operation of the latch mechanism 40 and the optical transceiver 4 The take-out operation can be performed in one substantially continuous operation. Therefore, it is not always necessary to hold the optical transceiver 4 with two fingers, and the optical transceiver 4 can be taken out by simply hooking the finger on the operation portion 38C of the operation lever 38, and the optical transceiver 4 can be taken out easily and quickly. be able to.

  Further, in the present invention, since the main body 37A of the latch release lever 37 operated by the operation lever 38 has only to be incorporated in the receptacle part 11 so as to be movable back and forth, the latch release lever 37 can be easily mounted and returned. There is no need to provide a spring for use, and the number of parts can be reduced. Further, even if the upper and lower surfaces of the receptacle part 11 are grasped with a finger, the latch release lever 37 is not pressed with the finger, and the operation lever 38 does not operate the latch release lever 37, so that the optical transceiver 4 can be connected to the cage 2. Can be securely attached.

  Further, since the plug recess 45 is provided in the connecting portion 38B of the operating lever 38, even if the operating lever 38 is rotated, the optical connector plug 24 hits the connecting portion 38B and obstructs the rotation of the operating lever 38. There is nothing.

  Furthermore, in the present invention, the rotation range of the operation portion 38C of the operation lever 38 is set only above the receptacle 11, and the rotation range is a relatively narrow range of about 26 ° from the horizontal plane. Loss of force when removing from the cage can be reduced. That is, when the rotation range of the operation unit 38C is widened, the direction of the operation force applied to the operation unit 38C changes depending on the rotation angle, so that the loss of force increases. Further, when the direction of the force changes, the optical transceiver 4 is tilted and becomes difficult to take out. On the other hand, if the rotation range of the operation unit 38C is small, the optical transceiver 4 can be pulled out from the cage 2 in a stable state with little change in the direction of force.

The present invention has shown an example in which the optical transceiver 4 is used for optical communication between the OLT and the ONU. However, the present invention is not limited to this, and other optical communication such as SONET (Synchronous Optical Network), SDH (
Synchronous Digital Hierarchy) can be used.

1 is an external perspective view of an optical transceiver according to the present invention. It is a top view of the optical transceiver. It is a right view which fractures | ruptures and shows a part of the optical transceiver. It is a bottom view of the optical transceiver. It is a perspective view of an operation lever. It is a figure for demonstrating the attachment or detachment operation | work with respect to the cage of the optical transceiver. It is a figure for demonstrating the attachment or detachment operation | work with respect to the cage of the optical transceiver. It is a figure for demonstrating the attachment or detachment operation | work with respect to the cage of the optical transceiver. It is a figure for demonstrating the attachment or detachment operation | work with respect to the cage of the optical transceiver.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mother board, 2 ... Cage, 4 ... Optical transceiver, 5 ... Optical fiber, 6 ... Locking hole, 7 ... Elastic piece, 10 ... Insertion part, 11 ... Receptacle part, 13 ... Case, 14 ... Circuit board, 17 ... Engagement part, 24 ... optical connector plug, 33 ... connection port, 37 ... latch release lever, 37A ... main body, 37B ... pressed part, 37C ... latch release part, 38 ... operation lever, 38A ... support shaft part, 38B ... Connection part, 38C ... Operation part, 38D ... Press part, 44 ... Shaft, 45 ... Recess for plug.

Claims (4)

A receptacle having a connection port to which an optical connector plug is connected on the front surface;
An insertion portion that has an engaging portion that engages with a locking hole of an elastic deformation portion provided in a cage on the communication device side, and is inserted into the cage;
A latch release lever for releasing the engagement state between the engagement hole and the engagement portion by elastically deforming the elastic deformation portion of the cage in a direction away from the engagement portion;
An operation lever for operating the latch release lever;
The latch release lever is provided on the lower side of the receptacle part so as to be movable back and forth.
The optical transceiver is characterized in that the latch release lever is operated by being rotated by an operating force in the same direction as a direction in which the insertion portion is removed from the cage. The optical transceiver of claim 1.
The operation lever includes a pair of left and right support shafts pivotally supported by shafts on both side surfaces of the receptacle portion, a connection portion connecting the pair of support shaft portions, and an extension to the connection portion, respectively. An operation portion and a pressing portion that extend upward and forward of the receptacle portion, and a plug recess formed in the coupling portion,
An optical transceiver, wherein the optical connector plug is inserted into a connection port of the receptacle through the plug recess. The optical transceiver according to claim 2.
The latch release lever is positioned in front of the receptacle portion and pressed by the pressing portion of the operation lever; and the elastic deformation portion of the cage is positioned on the lower surface side of the insertion portion. An optical transceiver comprising: a latch releasing portion that is elastically deformed in a direction away from the optical transceiver. In the latch mechanism of the optical transceiver that detachably locks the optical transceiver to the communication device side cage,
An elastically deformable portion having a locking hole provided in the cage;
An engaging portion that protrudes from a lower surface side of an insertion portion that is inserted into the cage of the optical transceiver and engages with a locking hole of the cage;
The engagement hole and the engagement are provided by elastically deforming the elastic deformation portion in a direction away from the engagement portion, which is provided on the lower side of the receptacle portion to which the optical connector plug of the optical transceiver is connected. A latch release lever for releasing the engagement state with the part,
An operation lever provided rotatably on the receptacle part;
A latch mechanism for an optical transceiver, wherein the operating lever is rotated by an operating force in the same direction as a direction in which the insertion portion of the optical transceiver is taken out from the cage.

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