JP4574594B2 - Transceiver - Google Patents

Description

  The present invention relates to a latch mechanism used in a transceiver such as an optical transceiver.

A conventional optical transceiver 90 is shown in FIG. The optical transceiver 90 is formed in a substantially rectangular shape. The optical transceiver 90 is inserted into the cage 60 through an opening 64 of the cage 60 extending in a substantially rectangular tube shape.
An electrical component for realizing a desired function is mounted inside the optical transceiver 90. In addition, an optical connector adapter portion 91 into which an optical cable connector (not shown) connected to an optical component is inserted, a latch protrusion 92 provided on the bottom surface portion, and a bottom surface portion are provided at one end portion of the optical transceiver 90. And a movable actuator 93 provided so as to be movable in the length direction of the optical transceiver 90. On the other hand, on the other end portion of the optical transceiver 90, a printed wiring board 94 having an electrical interface pad 95 and an optical component (not shown) having a function of converting an electrical signal and an optical signal are mounted.

The cage 60 is connected to the mother board 80 via the electrical connector 70. That is, a pad 82 and a through hole 81 are formed on the motherboard 80, a terminal 72 provided on the electrical connector 70 is mounted on the pad 82, and a terminal 63 formed on the bottom surface portion of the cage 60 is a through hole 81. Are soldered to each other. The electrical connector 70 is electrically connected to the electrical interface pad 95. Reference numeral 71 denotes an opening.
Further, a latch engagement hole 62 and a latch tongue 61 are provided on the bottom surface of one end of the cage 60 (see Patent Document 1 below).
In addition, a spring 65 is provided on the inner surface of the proximal end side of the cage 60. When the optical transceiver 90 is inserted to the bottom of the cage 60, the spring 65 is urged in a direction in which the optical transceiver 90 is pushed back. It has become.

  In the optical transceiver configured as described above, when the optical transceiver 90 is inserted into the cage 60, the electrical interface pad 95 and the electrical connector 70 are electrically connected. In addition, as shown in FIG. 14, the latch protrusion 92 is fitted into the latch engagement hole 62. As a result, the optical transceiver 90 is latched in the cage 60. Communication is performed by inserting and fixing an optical cable connector (not shown) to the optical adapter 91 in this state.

Further, when the optical transceiver 90 is taken out from the cage 60, the movable actuator 93 is pushed toward the other end side of the optical transceiver 90 (to the right in FIG. 15) as indicated by an arrow in FIG. Then, the latch tongue 61 is elastically deformed and pushed down to a predetermined position by the movable actuator 93, and the latch protrusion 92 is detached from the latch engagement hole 62. As a result, the optical transceiver 90 can be removed from the cage 60. As a result, the optical transceiver 90 is pushed out by the biasing force of the spring 65, and the optical transceiver 90 is taken out.
Japanese translation of PCT publication No. 2003-520373

  In the above conventional optical transceiver, when the optical transceiver 90 is taken out from the cage 60, the latch tongue 61 needs to be pushed down by the movable actuator 93. However, the shape of the latch tongue 61 does not match the shape of the movable actuator 93. The latch tongue 61 is not pushed down to a predetermined position. As a result, the latch protrusion 92 does not come out of the latch engagement hole 62 and the optical transceiver 90 cannot be taken out from the cage 60. Further, when the latch tongue 61 is highly elastic, even if the latch projection 92 is once removed from the latch engagement hole 62 by pushing the movable actuator 93, if the force applied to the movable actuator 93 is stopped, The actuator 93 is pushed back by the latch tongue 61, and as a result, the latch projection 92 reenters the latch engagement hole 62.

  In order to solve the above problem, the present invention is a transceiver that is inserted into a cage and performs communication, and includes a latch mechanism that latches in the cage in a state of being inserted into the cage, and the latch mechanism is A movable latch that is movable between an engagement position engaged with the cage in the inserted state and an engagement release position released from the engagement with the cage, and is disposed at the engagement position. A restricting means for restricting movement of the movable latch, a biasing means for biasing the movable latch to be disposed at the disengagement position, and the engagement position and the And an operation member for moving the movable latch between the engagement release position and the engagement release position.

  In this case, the restricting means includes a protruding portion that protrudes in one direction orthogonal to the moving direction of the movable latch, the operating member is rotatably provided, and the movable latch is rotated by the operating member. In connection with the operation member, it is movable in the radial direction of the circle centered on the rotation shaft at a position away from the rotation shaft of the operation member, and immovable in the circumferential direction of the circle. Preferably, the urging means urges the movable latch in a direction opposite to the orthogonal direction.

  If comprised in this way, the latch state with respect to the cage of a transceiver can be cancelled | released by simple operation of rotating an operation member.

  Also, a cam surface against which the movable latch urged by the urging means is pressed is provided, and when the operation member is operated, the movable latch is pressed against the cam surface by the urging means. It is desirable to move by.

  With this configuration, the movable latch can be moved to the engagement position by the cam surface to engage the movable latch with the cage, thereby latching the transceiver in the cage.

  Further, it is desirable that the cam surface is an inclined surface inclined to the opposite side to the orthogonal direction with respect to the moving direction of the movable latch.

  If comprised in this way, a cam surface can be formed easily.

  According to the present invention having the above-described characteristic configuration, the operating member and the biasing means cooperate to move the movable latch to the disengagement position and maintain the disengagement position, so that the transceiver is inserted. Thus, the engagement of the movable latch with the cage can be reliably released. Moreover, it is possible to prevent the movable latch from re-engaging with the cage after the engagement is released.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 and 2 show a state in which a transceiver is applied to an optical transceiver as an embodiment of the present invention.
The optical transceiver 1 is formed to extend in a substantially rectangular shape. The optical transceiver 1 is inserted into the cage 60 through the opening 64 of the cage 60 extending in a substantially rectangular tube shape.

The optical transceiver 1 has a housing 10 extending in a substantially rectangular cylindrical shape.
An optical connector adapter 11 is provided at one end of the housing 10 (left end in FIG. 1). A printed wiring board 50 on which an electrical component for realizing a desired function is mounted is mounted on the other end of the housing 10. An electrical interface pad 51 is provided at the base end of the printed wiring board 50.

The cage 60 is connected via an electrical connector 70 to a motherboard 80 on which various electrical components for realizing a desired function are mounted.
That is, a pad 82 and a through hole 81 are formed in the mother board 80, a terminal 72 provided in the electrical connector 70 is fitted into the pad 82, and a terminal 63 formed on the bottom surface portion of the cage 60 is a through hole. 81, and soldered to each other.
In a state where the cage 60 is attached to the mother board 80, the electrical connector 70 is inserted into the proximal end portion of the cage 60. The optical transceiver 1 is inserted into the cage 60 through the opening 64. When the optical transceiver 1 is inserted, the electrical interface pad 51 is inserted into the opening 71 of the electrical connector 70, and the electrical interface pad 51 and the electrical connector 70 are electrically connected. Communication is performed by inserting and fixing an optical cable connector (not shown) to the optical connector adapter unit 11.

  A latch tongue 61 is formed on the bottom surface of the tip of the cage 60. The latch tongue 61 has a base end integrally connected to the cage 60, and a distal end is movable as a free end in the vertical direction. A latch engaging hole 62 is formed in the latch tongue 61. Further, a spring 65 is provided on the inner surface of the proximal end side of the cage 60. When the optical transceiver 1 is inserted to the bottom of the cage 60, the spring 65 is urged in the direction in which the optical transceiver 1 is pushed back. It has become.

Further, as shown in FIG. 2, a stopper groove 12 extending in the width direction of the optical transceiver 1 (hereinafter, referred to as a left-right direction) is formed on the bottom surface of the one end portion of the housing 10, and light is transmitted to the stopper groove 12. A protrusion 19 (regulating means) adjacent to the other end side (base end side) of the transceiver 1 is formed. A vertical wall 12 a is formed between the stopper groove 12 and the protruding portion 19 as a common side wall.
The protruding portion 19 protrudes in one direction (downward) orthogonal to the moving direction of the movable latch 30 described later.
Further, both end portions of the rotating shaft 31 of the movable latch 30 are rotatably inserted into the stopper groove 12. In this state, as shown in FIG. 4, the movable latch 30 is restricted from moving to the other end side of the optical transceiver 1 by pressing the rotating shaft 31 against the vertical wall 12 a of the stopper groove 12.
However, the movable latch 30 can move to the other end side of the optical transceiver 1 by the rotation shaft 31 getting over the vertical wall 12 a and the protruding portion 19 on the other end side of the optical transceiver 1. .

When the rotating shaft 31 gets over the vertical wall 12a and the protruding portion 19, it enters into the bearing groove 14 formed adjacent to the base end side with respect to the stopper groove 12, as shown in FIG. Then, the movable latch 30 also moves to the proximal side by the amount that the rotating shaft 31 has moved from the stopper groove 12 to the bearing groove 14. Of course, the rotary shaft 31 can move from the bearing groove 14 to the stopper groove 12, and at that time, the movable latch 30 moves to one end side (tip side) of the optical transceiver 1.
As described above, the movable latch 30 is movable in the front-rear direction of the optical transceiver 1. As shown in FIG. 2, the movable latch 30 is provided with a slide shaft 33 extending toward the base end side, and a latch protrusion 32 is formed at the distal end of the slide shaft 33. As shown in FIGS. 3 and 4, when the latch protrusion 32 enters the latch engagement hole 62, the optical transceiver 1 is held inside the cage 60 in a retaining state. The position of the movable latch 30 when the rotating shaft 31 enters the stopper groove 12 and the latch protrusion 32 enters the latch engagement hole 62 is the engagement position.

As shown in FIG. 2, a pressing cover 40 is disposed at the lower end of the front end side of the housing 10 so as to cover the movable latch 30. A fixing hole 42 is formed in the pressing cover 40. The presser cover 40 is fixed to the housing 10 by fitting the cover receiving projections 17 formed at the distal end portion of the optical transceiver 1 into the fixing holes 42. A spring portion (biasing means) 41 is provided at an intermediate portion of the pressing cover 40. The spring portion 41 urges the movable latch 30 upward.
As a result, the movable latch 30 is biased so as to rotate counterclockwise in FIG. 4 about the rotation shaft 31, and the slide shaft 33 of the movable latch 30 is an inclined surface formed on the lower surface of the housing 10. (Cam surface) 10a is slidably pressed. The inclined surface 10a is formed as an upwardly inclined surface in FIG. 4 inclined upward. Therefore, the movable latch 30 is always pushed toward the base end side of the optical transceiver 1 by the spring portion 41 and the inclined surface 10a. However, when the optical transceiver 1 is located at the engaging position, the rotary shaft 31 is pressed against the vertical wall 12a, so that the movable latch 30 moves to the proximal end side unless the rotary shaft 31 gets over the vertical wall 12a. Never move.

  As shown in FIG. 2, a lever (operation member) 20 is disposed at the distal end portion of the housing 10. A rotation shaft hole 22 is formed in the lever 20. Further, the lever 20 has a lever rotation shaft 13 formed on both side surfaces of the front end of the housing 10 and is rotatably inserted into the rotation shaft hole 22, so that the optical transceiver 1 has the latch position shown in FIG. And a latch release position shown in FIG.

As shown in FIGS. 4 and 5, the lever 20 is formed with a long hole 21 extending in a direction perpendicular to the axis of the rotation shaft hole 22. That is, the long hole 21 is extended in the radial direction of a circle centering on the axis of the rotation shaft hole 22. The long hole 21 is disposed at a location spaced downward from the rotary shaft hole 22. A rotating shaft 31 of the movable latch 30 is inserted into the long hole 21 so as to be movable in the longitudinal direction of the long hole 21 and substantially immovable in the width direction. Therefore, when the lever 20 rotates, the movable latch 30 moves in the front-rear direction of the optical transceiver 1 while maintaining the state of being pressed against the inclined surface 10a. Therefore, the moving direction of the movable latch 30 by the lever 20 and the biasing direction of the movable latch 30 by the spring portion 41 are substantially orthogonal to each other.
On the other hand, when the lever 20 is located at the latch position, the rotary shaft 31 is located on the bottom side of the stopper groove 12 and is in contact with the vertical wall 12a.

  6 and 7, when the lever 20 is rotated from the latch position against the urging force of the spring portion 41 in the direction of the arrow in FIG. It is moved to the lower end side of the long hole 21 by the hole 21 and the vertical wall 12a. If the lever 20 can be freely rotated in this state, the lever 20 is returned to the latch position by the urging force of the spring portion 41. Accordingly, the lever 20 is prevented from being erroneously rotated from the latch position to the latch release position, and thus the movable latch 30 is prevented from being disengaged from the engagement position. When the lever 20 is further rotated toward the latch release position, the rotary shaft 31 gets over the vertical wall 12a and rides on the tip of the protrusion 19.

  As shown in FIG. 9, when the lever 20 is further rotated toward the latch release position, the rotating shaft 31 abuts on the upwardly inclined surface (cam surface) 19 a of the protruding portion 19 by the biasing force of the spring portion 41. . Then, the rotating shaft 31 is pushed to the right while sliding on the inclined surface 19a, and the movable latch 30 moves to the right accordingly. As a result, the rotary shaft 31 moves to the upper end side in the long hole 21, and the latch protrusion 32 moves obliquely upward to the right and gradually comes out of the latch engagement hole 62.

  As shown in FIG. 10, when the lever 20 moves to the latch release position, the rotating shaft 31 hits the bottom of the bearing groove 14. This prevents the lever 20 from rotating beyond the latch release position. In this state, as shown in FIG. 11, the entire latch protrusion 32 has come out of the latch engagement hole 62. In addition, since the movable latch 30 is biased upward by the spring portion 41, the latch protrusion 32 is maintained in a state of being pulled out from the latch engagement hole 62. The position of the movable latch 30 at this time is the disengagement position. When the movable latch 30 is located at the disengagement position, the latch protrusion 32 is pulled out from the latch engagement hole 62, so that the optical transceiver 1 can be extracted from the cage 60.

  In the optical transceiver configured as described above, when the optical transceiver 1 is latched in the cage 60, the optical transceiver 1 is inserted into the cage 60 with the lever 20 placed in the latch position. Then, as the optical transceiver 1 is inserted, the latch protrusion 32 elastically deforms the latch tongue 61 and pushes it downward. When the optical transceiver 1 is inserted into the cage 60 to a predetermined position, the latch protrusion 32 faces the latch engagement hole 62. Then, the latch tongue 61 returns to its original position by its own elasticity, and the latch protrusion 32 enters the latch engagement hole 62.

  When the optical transceiver 1 is extracted from the cage 60, the lever 20 may be rotated from the latch position to the latch release position as described above. When the lever 20 rotates to the latch release position, the slide shaft 33 of the movable latch 30 slides rightward on the inclined surface 10a, and the movable latch 30 is moved upward by the spring portion 41. As a result, the latch protrusion 32 comes out from the latch engagement hole 62 upward. In this state, not only a downward force does not act on the movable latch 30, but also its own elastic force does not act on the latch tongue 61. Therefore, even if the lever 20 that has been rotated to the latch release position is released, the latch protrusion 32 does not enter the latch engagement hole 62 again. Therefore, the optical transceiver 1 can be easily taken out from the cage 60 under the biasing force of the spring 65 without being affected by the elastic force of the latch tongue 61.

In addition, this invention is not limited to said embodiment, In the range which does not deviate from the summary, it can change suitably.
For example, in the above embodiment, the present invention is applied to an optical transceiver, but can be applied to other transceivers.
In the above embodiment, the latch engagement hole 62 is formed in the cage 60, and the lever 20, the movable latch 30 and the spring portion 41 are provided in the optical transceiver 1, but the engagement hole is provided in the optical transceiver 1. The cage 60 may be provided with a lever, a movable latch, and a spring portion.

It is an exploded perspective view showing one embodiment of this invention. It is a disassembled perspective view which shows the optical transceiver used in the embodiment. It is sectional drawing which shows the principal part of the embodiment in the state which rotated the lever to the latch position. It is sectional drawing which expands and shows the principal part of FIG. It is an enlarged view of the X section of FIG. It is an expanded sectional view showing the same embodiment in the state where a lever was rotated a little from the latch position to the latch release position side. FIG. 4 is a cross-sectional view similar to FIG. 3 when the lever is rotated to an intermediate position between the latch position and the latch release position. It is sectional drawing which expands and shows the principal part of FIG. FIG. 9 is a cross-sectional view similar to FIG. 8 when the lever is further rotated from the position shown in FIG. 7 to the latch release position side. FIG. 4 is a cross-sectional view similar to FIG. 3, showing the embodiment in a state where the lever is rotated to the latch release position. It is an enlarged view of the X section of FIG. It is sectional drawing which expands and shows the principal part of FIG. It is a disassembled perspective view which shows an example of the conventional optical transceiver. It is sectional drawing which shows the latch mechanism used in the same optical transceiver in a latched state. It is sectional drawing which shows the latch mechanism in a latch release state.

Explanation of symbols

1 Optical transceiver 19 Protruding part (regulation means)
20 Lever (operation member)
30 Movable latch 32 Latch projection 41 Spring portion (biasing means)
60 Cage 62 Latch engagement hole

Claims (3)

A transceiver that is inserted into a cage for communication;
A latch mechanism that latches into the cage in a state of being inserted into the cage;
The latch mechanism is
A movable latch movable between an engagement position engaged with the cage in the inserted state and an engagement release position released from the engagement with the cage;
Restriction means for restricting movement of the movable latch disposed at the engagement position;
Biasing means for biasing the movable latch to be disposed at the disengagement position;
An operation member that moves the movable latch between the engagement position and the engagement release position beyond the restriction by the restriction means;
Equipped with a,
The regulating means includes a projecting portion projecting in one direction perpendicular to the moving direction of the movable latch;
The operating member is rotatably provided;
The movable latch is
It is possible to move in the radial direction of the circle centered on the rotation shaft at a position apart from the rotation shaft of the operation member so as to move with the rotation of the operation member, and not move in the circumferential direction of the circle. Connected to the operating member,
The biasing means is
A transceiver characterized in that the movable latch is biased in a direction opposite to the orthogonal direction . A cam surface against which the movable latch urged by the urging means is pressed is provided;
2. The transceiver according to claim 1 , wherein when the operation member is operated, the movable latch moves while being pressed against the cam surface by the biasing means. 3. The transceiver according to claim 2 , wherein the cam surface is an inclined surface that is inclined to an opposite side to the orthogonal direction with respect to a moving direction of the movable latch.

Images