JP4196968B2 - Optical transceiver - Google Patents

Description

  The present invention relates to an optical transceiver, and more particularly to a mechanism for releasing a pluggable optical transceiver from a cage.

  The pluggable transceiver is used by being inserted into a cage installed on the circuit board of the host. The cage is a metal casing, and one end face is opened, and this open end is open to the face panel of the host system, and the transceiver is inserted therein. On the board on which the cage is mounted on the host system side, an electrical connector that engages with the transceiver is mounted on the far end side in the cage. When the transceiver is inserted into the cage, this connector is connected to the connector in the transceiver. An electrical plug is inserted to ensure communication between the transceiver and the host system.

  It is desirable that once the transceiver is inserted into the cage, it is not easily released from the cage. Therefore, when the optical connector is inserted into the transceiver between the two, and the semiconductor optical element mounted in the transceiver and the optical fiber in the optical connector are optically coupled, the transceiver does not come out of the cage. Is provided. In the conventional pluggable transceiver, the protrusion provided on the lower surface of the transceiver is engaged with the hole of the latch piece on the front end surface of the cage so that the transceiver cannot be pulled out of the cage. In order to pull out, it is necessary to pull out the protrusion on the transceiver side into the transceiver and release the engagement state with the hole of the latch piece. Alternatively, the engagement relationship can be released by pushing the latch piece outward from the transceiver.

Various mechanisms have been proposed for the detachable mechanism of the pluggable transceiver. USP 6,439,918 (Patent Document 1) discloses a method using a bale and an actuator. By rotating the bale on the front end face of the transceiver inserted in the cage, one end of the bale pushes one end of the actuator outward, and the other end of the actuator that performs seesaw movement around the fulcrum is inside the transceiver. This is a mechanism for releasing the engaged state between the protrusion provided at the other end and the latch piece of the cage by being pulled.
US Pat. No. 6,439,918

  In recent years, a method of using a pluggable transceiver in which cages are densely arranged three-dimensionally on a host substrate and this host system is used as an optical hub has been proposed. For example, it is possible to easily realize a hub for optical communication having 32 to 64 channels by arranging 16 transceivers having a cross-sectional area of 1 cm square and 2 to 4 transceivers in parallel. In such a system, when the transceiver is inserted in the adjacent cage and the optical connector is engaged with the transceiver, the adjacent transceiver and the optical cable are obstructed when the transceiver is pulled out of the cage. In some cases, the transceiver bale to be disengaged cannot be touched.

  The present invention has been made on the basis of the above background, and a transceiver capable of releasing a target optical transceiver from a cage even in an optical hub including the above-described closely mounted transceivers. We propose a desorption mechanism.

  An optical transceiver according to the present invention is a pluggable type optical transceiver that is inserted into a cage of a host system and used as a pluggable, and includes a mechanism that releases a latch state with the cage, which includes a receptacle, a bale, and an actuator. .

  The receptacle has a pair of side walls and a central partition wall sandwiched between the side walls. The bale is attached to the receptacle and has a pair of leg portions and a bridge portion connecting the leg portions. The leg has an opening through which a protrusion provided on the side wall of the receptacle passes, and the bale is mounted on the front end surface of the receptacle so as to be rotatable around the opening. An actuator has an arm part, a fulcrum, and a main-body part, and this arm part and a main-body part perform seesaw movement centering on a fulcrum. Further, the tip of the arm part is provided with a protrusion for engaging with the cage. The optical transceiver according to the present invention is characterized in that the leg of the bail has a cam for converting the rotational movement of the bail into the seesaw movement of the actuator.

  The bale has a sliding protrusion at its leg tip, while the actuator has an inner sliding surface in contact with the cam and an outer sliding surface in contact with the sliding protrusion. And since the actuator performs the seesaw motion in accordance with the rotational motion of the bale while being sandwiched between the bail cam and the sliding protrusion, not only can the seesaw motion be performed smoothly, but also the actuator can be removed from the bale and the receptacle. It prevents you from leaving.

  It is preferable that the surface of the tip portion including the sliding protrusion is offset from the main surface including the opening in the leg portion of the bale. By adopting such a configuration, even when a strong stress is applied to the bail, it is possible to prevent the engagement relationship between the side wall protrusion of the receptacle and the bail leg opening from being released.

  Furthermore, the cam has a composite shape including the first, second, and third portions. The second portion has a substantially linear shape. The distance from the third part to the rotation center of the bale is set longer than the distance from the first part to the rotation center. In the initial state of the bale, that is, in the state where the projection at the tip of the arm portion of the actuator is latched by the cage, the first portion of the cam is in contact with the inner sliding surface of the actuator, and the inner sliding surface and the cam The second part of the straight line forms a predetermined angle. Therefore, even if the bale is rotated from this initial state, the rotational movement of the bale is not converted into the seesaw movement of the actuator via the cam within the predetermined angle. It is possible to give play to the rotation of the bale by a predetermined angle. Only when the bale is further rotated from this state and the second part of the cam contacts the inner sliding surface of the actuator, the rotational movement of the bale is converted into the seesaw movement of the actuator.

  The protrusion provided on the receptacle side wall is concentric and has a shape in which a part of the outer concentric circle is notched to expose the inner concentric circle, and the notch is formed on the inner edge of the leg opening of the bale. It is preferable to have a protrusion that is received in the part. With this configuration, the rotation of the bale can be restricted by the protrusion of the opening contacting the side surface of the concentric cutout. The rotational movement of the bale can also be restricted by providing a rib on the receptacle side wall and bringing one side of the bail leg into contact with the rib.

  In the latch release mechanism of the present invention, it is possible to convert the seesaw motion of this actuator into the rotational motion of the bale by pushing down the front end of the actuator body. Even when transceivers and cages are mounted on the host system at high density, and there is not enough room to get a clue to the bale, the latched state with the cage can be released by pushing down the front end of the actuator. It will be possible.

  It is also preferred that the front end of the cover of the transceiver has a supporting piece that supports the actuator from below.

  According to the present invention, a transceiver having a structure that facilitates an unlatching operation with respect to a cage and an extracting operation from the cage is provided.

  Hereinafter, a cage release mechanism according to the present invention will be described with reference to the drawings. In the drawings and detailed description, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is an overhead view showing a state when a transceiver 1 according to the present invention is inserted into a cage 2. In FIG. 1, the host system board on which the cage is mounted and the face panel are omitted.

  The cage 2 is a metal box having a plurality of circular openings, and the front end of the cage 2 contacts the edge of the opening when the cage is attached to the opening of the face panel of the host system. A plurality of ground fingers 3 for enhancing the ground potential are formed. The transceiver 1 is inserted into the open end of the cage 2, and only the front end of the transceiver 1, that is, only the portion of the bail 100, the actuator 200, and the receptacle 300 according to the present invention protrudes from the cage 2. The protruding part also protrudes from the face panel of the host system.

  FIG. 2 (A) is an assembly view of an engagement mechanism composed of a bail 100, an actuator 200, and a receptacle 300 according to the present invention, and FIG. 2 (B) is an overhead view of the assembly state from another direction. It is. The bail 100, the actuator 200, and the receptacle of the present embodiment are all made of resin mold, and the bail 100 and the actuator 200 are assembled with respect to the receptacle 300.

  The bail 100 includes a pair of leg portions 102 and a bridge portion 101 that connects the leg portions 102. A hole 103 for attaching the bail 100 to the receptacle 300 is formed substantially at the center of the leg portion 102, and the bail can rotate around the hole 103. A cam 105 is formed on the inner surface of the leg portion 102 and around the hole 103 to cause the actuator 200 to perform seesaw motion in conjunction with the rotational motion around the hole 103 of the bail 100. . The rotational motion of the bail 100, the seesaw motion of the actuator 200, and the function of the cam 105 that links the two will be described later.

  At the tip of the leg 102 of the bail 100, a sliding projection 104 and an angular projection 109 for positioning the tip of the leg 102 with respect to the front end 206 of the bail are formed on the sliding projection. Has been. The sliding protrusion 104 slides on the outer sliding surface 201 of the actuator 200 as the bail 100 rotates, and has a function of supporting the actuator 200 from below so that the actuator 200 does not disassemble from the receptacle 300.

  One side 108 of the leg 102 contacts the side surface of the rib 314 of the receptacle 300, and the rib 314 functions as a rotation stopper of the bail 100. A flat portion 110 is formed on the side of the bridge portion 101 opposite to this side. The flat portion 110 serves as a clue to hook a finger when the bail 100 is rotated. Further, a plurality of grooves and ribs 107 are formed in the central portion of the bridge portion 101, and this portion also gives a clue to hook a finger.

  A recess 106 is formed on the inner surface of the bridge portion 101. The recess 106 is accommodated in a convex portion 311 formed on the upper surface of the receptacle 300, and the bail 100 is held in a neutral position. The relationship between the protrusion 106 and the recess 311 may be reversed. That is, the bridge portion 101 of the bail 100 has a recess 106, and the protrusion 311 can be formed at a corresponding portion of the receptacle 300.

  The actuator 200 is attached to the receptacle 300 and performs a seesaw motion in accordance with the rotational motion of the bail 100. That is, the actuator 200 has an arm part 205 on one side and a main body part 209 on the opposite side with the fulcrum part 207 as the center. A projection 203 that engages with the latch piece of the cage 2 shown in FIG. Further, the tip 206 of the main body 209 is in a position that coincides with the tip surface of the receptacle 300 and the tip surface of the angular protrusion 109 of the bail 100 when the bail 100 is in the neutral position.

  The actuator 200 has a fulcrum 207 at the flange 306 of the receptacle, a recess 204 formed on the surface opposite to the surface on which the projection 203 is formed, and the recess 204 formed with a projection 309 formed on the lower surface of the receptacle 300. It is attached to the receptacle 300 to receive. Then, the main body 209 and the arm 205 perform a seesaw motion around the fulcrum 207 in accordance with the rotational motion of the bail 100.

  Sliding protrusions 104 formed at the tips of the legs 102 of the bail 100 slide on the outer sliding surfaces formed on both sides of the main body 209 of the actuator 200 in accordance with the rotation of the bail 100, while the cams of the bail 100 The surface 105 slides on the inner sliding surface 202 of the actuator 200 in accordance with the rotation of the bail 100, thereby causing the actuator 200 to perform a seesaw motion.

  The receptacle 300 is formed by molding a resin, and has a coaxial package, a light emitting assembly having a sleeve, and two openings 301 and 302 into which the light receiving assembly is inserted and defined by the central wall 310. On the other hand, a side protruding from the face panel of the host system has a pair of receptacles 303 and 304 formed by a pair of side walls 305 and a central partition wall 306. The receptacle 303 is connected to the opening 301, and the receptacle 304 is connected to the opening 302. That is, the position of the transmission / reception assembly in the opening is defined by sandwiching the flange provided in the transmission / reception assembly in the grooves 312 and 313 formed in the vicinity of the openings 301 and 302.

  Ribs 314 that serve as rotation stoppers for the bail 100 are formed on the outer surfaces of the pair of outer walls 305, and the rotation of the bail 100 is regulated by abutting one side of the leg portion 102 of the bail 100 against the side surface of the rib 314. Can do. Further, a projection 307 serving as the rotation center of the bail 100 is provided on the outer surface of the side wall 305. The protrusion 307 is passed through the central opening 103 of the leg portion 102 of the bail 100 to serve as the rotation center of the bail 100.

  A plurality of structures that define the seesaw motion of the actuator 200 are formed on the lower surface of the receptacle. That is, a protrusion 309 having a substantially semicircular cross section is provided at the approximate center of the lower surface, and this protrusion is inserted into a recess 204 formed at the anchor of the arm portion 205 of the actuator 200. On the other hand, a pair of hook-shaped protrusions 306 are provided on both sides of the lower surface of the receptacle 300. A shaft 207 having a semicircular cross section formed on a surface opposite to the concave portion 204 is inserted into the recess of the projection 306, which is the attachment of the arm portion 205 of the actuator 200. Therefore, the arm part 205 and the main body part 209 of the actuator 200 perform a seesaw motion around the shaft 207. The protrusion 309 at the center of the bottom surface of the receptacle 300 prevents the actuator 200 from being detached from the receptacle 300.

  A protrusion 311 is formed on the upper surface of the central partition wall 306 of the receptacle 300 to engage with the recess 106 formed on the inner surface of the bridge portion 101 of the bail 100. The recess 106 and the protrusion 311 are engaged when the bail 100 is in the initial position to stabilize the position of the bail 100. As described above, the same function is provided even if the relationship between the recesses and the protrusions is reversed.

  FIG. 3A shows a state after the bail 100, the actuator 200, and the receptacle 300 are assembled, and shows the state when the bail 100 is in the initial position. FIG. 3B is an overhead view of the same state from the surface of the receptacle 300.

  When the bail 100 is in the initial position, the bridge portion 101 of the bail 100 is positioned on the upper surface of the receptacle 300, and the two openings 303 and 304 of the receptacle 300 are open. This position also corresponds to a state in which an optical connector is inserted into these two openings 303 and 304. That is, the leading edge of the actuator 200 is at the top position of the seesaw motion and coincides with the leading edge of the receptacle 300. In addition, the corner projection 109 at the tip of the leg of the bail 100 also coincides with the front edge 206 of the actuator 200.

  Referring to FIG. 3B, the receptacle 300 is viewed from below when the bail 100 is in the initial position. When the bail 100 is in the initial position, the arm 205 of the actuator 200 is separated from the receptacle 300 and the protrusion 203 provided at the tip of the arm 205 is in a floating state. The sliding protrusion 104 at the tip of the leg 102 of the bail 100 is flush with the foremost portion of the outer sliding surface 201 of the actuator 200, and the angular protrusion 109 is flush with the leading end 206 of the actuator 200.

  4 (A) and 4 (B) show the situation when the bail 100 is rotated from the state of FIGS. 3 (A) and 3 (B), respectively. The bail 100 can be easily rotated using the rib 107 at the center of the bridge portion 101 or the flat portions 110 on both sides as a clue.

  Since the rear side of the leg portion 102 of the bail 100 has a curved shape, even if the bail 100 rotates, the rib 314 of the receptacle 300 does not become an obstacle to rotation. As the bail 100 rotates, the tip 206 of the actuator 200 is pushed downward. As will be described later, the actuator is sandwiched between the cam 105 of the bail 100 and the sliding protrusion 104 at the tip of the leg portion 102 and does not completely separate from the receptacle 300.

  FIG. 4B shows the situation. That is, as the bail 100 rotates, the tip sliding protrusion 104 of the leg portion 102 slides on the outer sliding surface 201 of the actuator 200. The actuator 200 is supported by the sliding protrusion 104 of the bail 100 and is prevented from being completely detached from the receptacle 300. Due to the action of the cam formed on the inner surface of the bail 100, in particular, the radius of the cam surface gradually increases with the rotation of the bail 100, so that the inner sliding surface in contact with the cam surface of the actuator 200 is pushed downward. It is. In conjunction with the downward movement, the arm 205 of the actuator 200 is pushed upward and inside the receptacle 300 by the action of a seesaw with the shaft 207 as the center of rotation, and the protrusion at the tip of the arm 205 is pulled into the receptacle 300.

  FIG. 5A to FIG. 5C are schematic views for schematically explaining the rotation of the bail 100 and the seesaw operation of the actuator 200. In the figure, the solid line indicates the bail 100 and the dotted line indicates the actuator 200.

  First, in FIG. 5A, the bail 100 is in its initial position and neutral position. Although not shown in FIG. 5A, at this time, the projection 106 formed at the center of the bridge portion 101 of the bail 100 is fitted into the recess 311 formed on the upper surface of the corresponding central partition wall 306 of the receptacle 300. Yes. In this neutral position, the first surface 105 a of the cam 105 of the bail 100 is in contact with the inner sliding surface 202 of the actuator 200.

  The shape of the cam 105 is connected to the first arc portion 105a having the first radius r1 around the rotation center of the bail 100, the straight portion 105b continuous to the arc portion 105a, and the straight portion 105b. And a second circular arc portion having a second radius r2 centering on the rotation center of the first arc portion. In this neutral position, the straight portion 105b of the cam 105 and the inner sliding surface 202 of the actuator 200 make an angle θ. Further, the outer sliding surface 201 of the actuator 200 is in contact with the sliding protrusion 104 of the bail 100 at its most distal end.

  FIG. 5B shows a state when the bale is rotated clockwise from the neutral position. In the range where the rotation angle is within θ, the boundary point between the first arc portion 105a and the straight portion 105b of the cam 105 only slides on the inner sliding surface of the actuator 200 and maintains a constant distance of radius r1 with respect to the rotation center. Therefore, the actuator 200 is not pushed down. Further, the sliding protrusion of the bail 100 also slides on the outer sliding surface of the actuator 200, but the shape of the outer sliding surface 201 is also an arc shape having a constant radius centered on the rotation center of the bail 100 within this angle θ. Since it is formed, the sliding projection 104 does not push up or push down the actuator 200. That is, within the range of the angle θ with respect to the rotation of the bail 100, the rotational motion is within the range of play that is not converted to the seesaw motion of the actuator 200.

  When further rotated from the angle θ, the second arc portion 105 c of the cam 105 comes into contact with the inner sliding surface 202 of the actuator 200. As shown in FIG. 5C, when the bail 100 is further rotated from this state, the relationship between the rotation center of the bail 100, the rotation center 207 of the actuator 200, and the inner sliding surface 202 of the actuator 200 is related. In accordance with the rotation of the bail 100, the boundary point between the straight portion 205b and the second arc portion 205c of the cam 205 is always in contact with the inner sliding surface 202, and the actuator 200 is moved outward (in FIG. 5C). The action of pushing downward) is realized. At this time, the sliding protrusion 104 of the bale continues to slide on the outer sliding surface 201 of the actuator 200. That is, the actuator 200 is pushed away from the receptacle 300 while the inner sliding surface 202 and the outer sliding surface 201 are sandwiched between the bail cam 105 and the sliding protrusion 104, respectively.

  When the rotation of the bail 100 is further continued, the boundary point between the straight portion of the cam 105 and the second arc portion 105c comes into contact with the arc portion on the inner side of the inner sliding surface 202. Since this arc portion maintains a constant distance (radius) with respect to the rotation center of the bail, even if the rotation of the bail 100 is continued, the rotation is not converted into the vertical movement of the actuator 200. That is, in this state, the second arc portion 105c of the cam 105 is in contact with the entire arc portion of the inner sliding surface 202 of the actuator.

  As described above, when the bail 100 is rotated from its neutral state (initial state, FIG. 5A), the rotation of the bail 100 is not converted to the vertical movement of the actuator 200 until the predetermined angle θ, The vertical movement of the actuator 200 is started only after passing through θ. When the bail 100 reaches another predetermined angle (greater than θ), even if the bail 100 is further rotated, a mechanism that is not converted to the vertical movement of the actuator 200 is realized. . Further, even if the rotation direction of the bail 100 is reversed (counterclockwise in FIG. 5), only the motion mechanism of the bail 100 and the actuator 200 is opposite to the above description, and its operation and function are not changed. .

  FIG. 6 shows a modification of the cam 105 of the bail 100. In the example shown in FIG. 5, the straight portion 105b of the cam 105 and the second arc portion 105c are connected discontinuously. The example shown in FIG. 6 is an example in which a third arc portion 105d is provided for the discontinuous portion. The radius of the third arc portion 105d is sufficiently smaller than the radii of the first arc portion 105a and the second arc portion 105c, so that the bail 100 and the actuator 200 described with reference to FIG. They do not affect the rotational movement and vertical movement, respectively. Further, since the boundary between the straight line portion 105b and the second arc portion 105c is staggered, an advantage that the contact between the inner sliding surface 202 of the actuator 200 and the boundary is smooth is produced.

  The bail 100, the actuator 200, and the receptacle 300 having the above mechanism have been described on the assumption that all of them are manufactured by a resin mold. In the second and third embodiments described below, an example in which the bail 100 is formed of metal will be described.

  FIGS. 7A and 7B are views for explaining a latch release mechanism using the bale 100a of the second embodiment according to the present invention. The latch release mechanism includes a metal bale 100a, a resin actuator 200a, and a resin receptacle 300a. The bale 100a has a different form from the bail 100 according to the first embodiment in the following points.

  That is, in the first bail 100, the cam 105 that converts the rotational motion of the bail into the vertical motion of the actuator 200 is provided on the inner surface of the leg portion 102 so as to surround the rotational center of the bail 100. In this example 100 a, the shape of the outer side of the leg portion 102 itself functions as the cam 105. That is, the leg portion 102 is surrounded by an opening 103a provided at the bale rotation center, a first arc portion 105a having a radius r1 centered on the opening 103a, a straight portion 105b, and a second arc portion 105c having a radius r2. Has a shape. Further, a stopper 111 for restricting the rotational operation of the bail 100a is formed on the inner edge of the opening 103a, while the shape of the protrusion 307a provided on the side wall of the receptacle 300a that gives the center of rotation is partially the inner circle. And the bail 100a is rotated around the outer circle so as to contact the inner circle within the portion where the stopper 111 is cut off, so that an effective angle of the bale 100a is obtained. Smooth rotation inside is guaranteed.

  As a thing corresponding to the sliding protrusion 104 of the bale 100 of the 1st form, the bail 100a of this example is equipped with the hook-shaped structure 104a at the front-end | tip of the leg part 102a. The actuator 200a is prevented from being detached by sandwiching the outer sliding surface 201a and the inner sliding surface 202a of the actuator 200a between the structure 104a and the cam sides 105a to 105c. Further, as seen in FIG. 7A, a pair of tab pieces 12 are provided by extending the lower part of the case front end face of the transceiver 11 according to the present invention, and these tab pieces 12 support the actuator 200a from below. However, this is effective for the detachment of the actuator 200a.

  A clue 107a having the same function as the clue 107 according to the first example is formed in the center of the bridge portion 101a, and a clue 110a is formed on both sides thereof. Further, in the latch release mechanism of the present embodiment, a clue 206a for inducing rotation of the bail 100a is also formed at the front end of the actuator 200a. In the first embodiment, the cam of the bail 100 is formed. Since the actuator 200 is sandwiched between the 105 and the sliding protrusion 104, it is difficult to induce the rotation of the bail 100 even if the front end of the actuator 200 is pushed down. In the present embodiment, as shown in FIG. 7B, it is possible to induce the rotation of the bail 100a by pushing down the front end 206a of the actuator 200a.

  When unplugging a pluggable transceiver mounted on a host system with high density from the cage of the host system, if the optical connector is inserted into the transceiver adjacent to the target transceiver, the latch with the cage is released. In addition, there are still cases where a human finger cannot be inserted up to the front end of the bale. In such a case, it is preferable that the latch can be released by pushing down not only the bail but also the front end of the actuator.

  FIGS. 8A and 8B are enlarged views showing the cam portion 105 and the bowl-shaped structure 104a of the bail leg portion 102a according to the present embodiment. As shown in FIG. 8A, the bowl-shaped structure 104a is formed to be offset with respect to the main surface of the leg portion 102a. This is to increase the reliability of the sandwiching between the structure 104a and the actuator 200a of the cam 105. That is, when the same surface is used without offset, when the front end 206a of the actuator 200a is pushed down to induce the rotational motion of the bail 100a, a stress may be exerted to spread the leg 102a of the bail 100a outward. there were. By offsetting the structure 104a and the main surface of the leg portion 102a, the leg portion 102a can be prevented from falling off from the protrusion 307a of the receptacle 300 even when such stress is applied.

  FIG. 8B is a schematic diagram showing the configuration of the cam 105. The cam 105 of this example includes a first portion 105a, a straight line portion 105b, and a second arc portion 105c, and this is the same as the cam 105 according to the first embodiment. In the cam 105 of this example, in the state of FIG. 8B in which the bail 100a is in a neutral state, the first portion 105a, which is a substantially linear shape, is included in the actuator 200a. It is in contact with the sliding surface 202a (see FIGS. 7A and 7B).

  When the bail 100a is rotated from this state (counterclockwise in FIG. 8B), until the linear portion 105b of the cam 105 contacts the inner sliding surface 202a of the actuator 200a, the rotational motion of the bail 100a is the actuator. It is not converted to 200a. That is, the bale 100a is in the idle state between the neutral state and the angle θ, as in the first embodiment. The boundary point between the straight line part 105b of the cam 105 and the second arc part 105c, which is at a distance of radius r2 with respect to the center of rotation of the bale, starts to push down the inner sliding surface 202a of the actuator 200 for the first time beyond the angle θ. . The actuator 200a is pushed down in accordance with the rotation of the bail 100a by the mutual positional relationship between the rotation center of the bail 100a, the rotation center of the actuator 200a, and the contact point between the boundary point and the inner sliding surface 202a. The second arc portion 105c has a finite width, but due to the action of the stopper 111 formed at the inner edge of the opening 103a of the bail 100a, the rotation of the bail 100a is rotated before the second arc portion 105c ends. Be regulated. Further, during these series of rotation operations, the outer sliding surface 201a of the actuator 200a is in contact with and supported by the structure 104a of the bail 100a, and thus extends from the lower portion of the front end surface of the transceiver 11 described above. In combination with the function of the support piece 12, the actuator 200 a is not detached from the receptacle 300.

  FIGS. 9A and 9B are side views showing the rotational movement of the bail 100a and the vertical movement of the actuator 200a in the latch mechanism according to the present embodiment. FIG. 9A shows a state in which the bail 100a is in a neutral state and an initial state, and FIG. 9B shows a state in which the rotational motion of the bail 100a is induced by pushing down the front end 206a of the actuator 200a. is there.

  As shown in FIG. 9A, in the neutral state (initial state), the first portion 105a of the cam 105 is in contact with the inner sliding surface 202a of the actuator 200a. Furthermore, the outer sliding surface 201a and the structure tip 104a of the bail 100a are in contact with each other. In this state, the main body of the actuator 200a is in the most elevated position, and the tip of the arm 205 and the projection 203a located on the opposite side across the rotation center 207a of the actuator 200a are at the most depressed position. The projection 203a is latched in an opening formed in the cage body. Further, the stopper 111 in the opening 103a of the bail 100a is in contact with the side of the protrusion of the receptacle 300, and one side 108a of the leg 101a of the bail 100a is in contact with the side surface of the rib 314 provided on the side wall of the receptacle 300. . The lower surface of the actuator 200 a is supported by the tab side 12 of the transceiver body 11 from below.

  In FIG. 9B, when the front end 206a of the actuator 200a is pushed down, an inertia moment that pushes the front end 206a downward also acts on the contact point between the outer sliding surface 201a and the structure 104a of the bail 100a. The magnitude depends on the distance from the rotation center of the actuator 200a to the front end 206a and the distance to the contact point. When a downward pressing stress is applied to the contact point, this force also acts as a moment that causes a rotational motion with respect to the bail 100a, so that a rotational motion can be induced in the bail 100a.

  In the first embodiment, even if an attempt is made to push down the tip 206 of the actuator 200, the actuator 200 is sandwiched between the cam 105 and the sliding protrusion 104 of the bail 100, and therefore the stress to push down the tip 206 of the actuator 200. Could not be converted into a rotational movement of the bale 100. For this reason, the bail 100 functions as a stopper against this downward movement, and the actuator 200 does not move up and down. As a result, the projection 203 provided at the tip of the arm 205 of the actuator 200 cannot be drawn into the transceiver 11. Met.

  In this example, since the stress with respect to the tip 206a of the actuator 200a induces the rotational motion of the bail 100a, the bail 100a does not function as a stopper. Therefore, by pushing down the tip 206a, the projection 203a provided at the tip of the arm 205a of the actuator 200a can be pulled into the transceiver by a seesaw motion about the rotation center 207a.

  As is apparent from the side view of FIG. 9A, when the transceiver according to the present invention is mounted on the host system at a high density, the veil 100a is adjacent to the initial position. It is assumed that the transceiver mounted immediately above the transceiver becomes an obstacle, and the clues 107a and 110a of the bale 100a cannot be touched with a finger. A special jig may be required to rotate the bale 100a.

  On the other hand, when the tip 206a of the actuator 200a is pushed down, the opening of the receptacle 300 of the transceiver main body is provided directly above the tip 206a. There is no problem in pushing down the tip of the actuator 206a downward without using a special jig.

  FIG. 10 is an overhead view of a bale 100b according to still another embodiment. The bale 100b is made of metal and has a form similar to the bail 100a according to the second example. However, the tip structure 104a of the leg portion 102a is formed as an offset surface with respect to the main surface of the leg portion 102a, whereas in the bail 100b of this example, the tip structure 104b is the main structure of the leg portion 102b. It is formed on the same surface as the surface. For this reason, in the second example, there is a possibility that the bail 100b may come off from the projection 307b of the receptacle 300 when the tip 206a of the actuator 200a is pushed down.

  In this example, for this purpose, the bridge portion 101b of the bail 100b is formed in an arc shape, and a force directed inward is always applied to the leg portion 102b. For this reason, even if the fitting force of the bail 100b to the receptacle 300b is improved and the stress at the time of pushing down the tip 206b of the actuator 200b is transmitted to the bail 100b via the tip structure 104b, the bale 100b It is possible to prevent the receptacle 300b from falling off.

  Further, at the center of the bridge portion 101b, a tab piece 112b is bent inward, and a convex portion 106b is formed at the tip of the tab portion 112b toward a space surrounded by the pair of leg portions 102b. This is because, as shown in FIG. 13, when the bail 100b is in the initial position, the tip protrusion 106b hits the upper side 306b of the central partition wall of the receptacle 300b, and the upper side 306b is bent by the elastic force generated by bending the tab piece. This is for fixing the neutral state by pressing the piece 306b. In the first and second embodiments, a convex portion or a concave portion is formed on the bale 100, 100a side, and a concave portion or a convex portion is formed on the corresponding receptacle side. This is because the position is specified but the same function is secured.

  FIGS. 11A and 11B show the state of rotational movement and vertical movement of the bail 100b and the actuator 200b according to the present embodiment. In FIG. 11A, the bail 100b is in its initial position. That is, the stopper 111b formed on the inner edge of the opening 103b of the leg portion 102b is formed on one of the side surfaces formed on the protrusion 307b of the receptacle 300b at the same time the side of the bail 100b hits the side of the rib 314b of the receptacle 300b. I'm hitting. In this state, the actuator 200b is in a state where the inner sliding surface 202b and the outer sliding surface 201b of the actuator 200b are sandwiched between the first portion 105a of the cam of the bail 100b and the tip structure 104b of the leg portion 102b. Is retained. The tip structure 104b is formed in an arc shape, but a part of the tip structure 104b protrudes from the arc, and contacts the outer sliding surface 201b of the actuator 200b at one point of the protruding portion. And a smooth sliding motion between the outer sliding surface 201b and the outer sliding surface 201b. When the bail 100b is in the initial position, the actuator 200b has its tip 206b positioned at the top, and the engagement protrusion 203b formed at the tip of the arm 205b of the actuator 200b is pushed out most by the seesaw motion. And engages with a corresponding opening in the cage.

  When the bail 100b is rotated to reach the state shown in FIG. 11B, the outer sliding surface 201b and the inner sliding surface 202b are sandwiched between the tip structure 104b and the cam surface 105b, and the sandwiched state is released. . At this time, the cam surface 105c of the bail 100b is in contact with the inner sliding surface 202b of the actuator 200b. This surface is in contact with the bail rotation center 103b from the contact point in the initial state (the state of FIG. 11A). Since the distance is large, the inner sliding surface 202b of the actuator 200b is pushed down. However, at this time, since the tip structure 104b and the outer sliding surface 201b are already separated, it is assumed that the actuator 200b is detached from the receptacle 300b. In this example, as shown in FIG. In addition, since the tab piece 12 provided on the lower surface of the front end of the transceiver 11 supports the actuator 200b from below, the actuator 200b is not detached from the receptacle 300b.

  Further, in the state of FIG. 11 (B), in order to avoid the tip of the leg portion 102b of the bail 100b from hitting the rib 314b of the receptacle 300b, the lower portion of the rib 314b is chamfered 315b and the leg portion 102b. The tip rotates smoothly. Further, even if the bail 100b is further rotated from the state of FIG. 11B, the stopper 111b at the inner edge of the opening 103b abuts against one surface of the receptacle projection 307b to restrict the rotation. Further rotation of the bail 100b from the state of FIG. 11 (B) is suppressed.

  In this example, as shown in FIGS. 11 (A), 11 (B), and 12, the upper part 306b of the central partition wall of the receptacle 300b is formed to be greatly bent. This is because the bail 100b is rotated to the release position shown in FIG. 11B to release the latch between the cage and the transceiver 11 is pulled out of the cage. This is because the transceiver 11 can be easily pulled out from the cage by inserting a finger between 306b and 306b. Also in this example, in the initial position (latch engagement position) of FIG. 11A, pushing down the tip of the actuator 206b is converted into the rotational movement of the bail 100b to rotate the bail 100b, and at the same time, the protrusion 203b is connected to the transceiver. The latch state can be released by pulling in (the state moves to the state of FIG. 11B). In this state, the transceiver 11 can be pulled out of the cage by inserting a finger between the bridge portion 101b of the bail 100b and the receptacle 300b.

  In this example and the series of configurations already described, a transceiver 11 is provided that has a structure that facilitates an unlatching operation with the series of cages and an extraction operation from the cage.

It is an overhead view which shows a mode when the optical transceiver based on this invention is inserted in the cage. FIG. 2A is an assembly view of an engagement mechanism constituted by a bale, an actuator, and a receptacle according to the present invention, and FIG. 2B is an overhead view of the assembly state from another direction. FIG. 3A is an overhead view after the assembly of the engagement mechanism according to the present invention, and FIG. 3B is a view of the engagement mechanism after assembly from another direction. FIG. 4 (A) is an overhead view showing a state when the bail rotates with respect to the engagement mechanism according to the present invention, and FIG. 4 (B) is an overhead view when the state is seen from another direction. FIG. 5A to FIG. 5C are schematic views showing continuously the motion of the bale and the actuator according to the first embodiment of the present invention. It is a modification regarding the cam mechanism of the bale which concerns on 1st Embodiment. FIG. 7A is an overhead view of the vicinity of the receptacle of the transceiver having the attaching / detaching mechanism of the second embodiment of the present invention, and FIG. 7B is an overhead view of the second embodiment from another direction. FIG. FIG. 8A is an enlarged overhead view showing the cam portion of the bale according to the second embodiment of the present invention, and FIG. 8B is an enlarged view for explaining the functions of the bail and the cam portion. It is. FIG. 9A is a diagram illustrating a state of a series of movements of the attachment / detachment mechanism according to the second embodiment. It is an overhead view which shows the modification of the bale which concerns on 2nd Embodiment. FIG. 11A is a side view showing the rotation and the movement of the actuator when the veil of the modified example shown in FIG. 10 is used, and FIG. 11B shows the state at the latch release position when the bail is used. FIG. It is an overhead view which shows a mode that the bale of the modification shown in FIG. 10 was attached to the receptacle. It is sectional drawing which shows the attachment state of the bale shown in FIG.

Explanation of symbols

100, 100a, 100b ... bale, 200, 200a, 200b ... actuator, 300, 300a, 300b ... receptacle.

Claims (7)

A pluggable optical transceiver used in engagement with a cage of a host system,
A receptacle comprising a pair of side walls having a protrusion and a central partition;
A bale attached to the receptacle and having a pair of legs and a bridge part connecting the legs, each leg having an opening through which a protrusion provided in the receptacle passes, and rotating around the protrusion When,
An arm portion, a fulcrum, and a main body portion, the arm portion and the main body portion perform a seesaw motion around the fulcrum, and the arm portion includes an actuator having a protrusion at a tip thereof;
Including
The veil, in order to release the latched state of the protrusion and the cage formed at the tip of the arm, have a cam that converts the rotary motion of the veil seesaw motion of the actuator,
The optical transceiver has an inner sliding surface and an outer sliding surface, and the cam is in contact with the inner sliding surface . 2. The optical transceiver according to claim 1, wherein the leg portion of the bale has a sliding protrusion at a tip portion thereof, and the sliding protrusion is in contact with an outer sliding surface of the actuator . The optical transceiver according to claim 1, wherein the sliding protrusion and the cam sandwich the actuator . The leg portion of the bale has a main surface including the opening and another surface including the sliding protrusion, and the main surface and the other surface are offset. The described optical transceiver. The cam has first, second, and third portions, the second portion has a substantially linear shape, and the distance from the second portion to the center of rotation of the bale is equal to that of the first portion. Greater than the distance to the center of rotation,
When the bail is engaged with the projection of the arm and the cage, the inner sliding surface of the actuator contacts the first portion of the cam, and the second portion of the cam and the inner sliding surface are in contact with each other. Making a predetermined angle, and the actuator starts the seesaw motion only after the bale rotates by the predetermined angle;
The optical transceiver according to claim 1. 6. The optical transceiver according to claim 1 , wherein the seesaw motion is converted into a rotational motion of the bail by pushing down the front end of the body portion of the actuator . 7. The optical transceiver according to claim 1 , wherein the receptacle and the actuator are made of a resin mold .

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