JP6574342B2 - Optical connector - Google Patents

Description

  The present invention relates to an optical connector fixed to a fixed plate.

  2. Description of the Related Art Conventionally, as an optical connector, an optical connector has been proposed that includes an optical component FOT (Fiber Optic Transceiver), a shield case that covers the FOT, and an alignment that holds the FOT and the shield case (for example, Patent Document 1). reference). In Patent Document 1, a lead frame connected to an element inside the FOT and a leg portion of a shield case are fixed to a circuit board (fixed target plate).

JP-A-2005-266130

  However, since the connection portion between the lead frame and the leg portion of the circuit board has an electrical connection function, when an external force is applied when trying to keep the entire optical connector fixed to the circuit board by this connection portion. In addition, contact failure may occur in the connection portion. Therefore, a configuration is conceivable in which the fixing pin is inserted into a part of the housing that accommodates the FOT and fixed to the circuit board, and the housing is fixed to the circuit board, thereby maintaining the fixing of the entire optical connector to the circuit board. However, when the fixing pin is not sufficiently inserted, there is a possibility that the protruding dimension of the distal end portion of the fixing pin from the housing is insufficient and fixing failure occurs. It is difficult for an operator to visually confirm whether the inserted fixing pin is in a normal state and a sufficient protruding dimension is obtained.

  An object of the present invention is to provide an optical connector in which a fixing pin can be attached to a housing so as to obtain a predetermined protruding dimension.

In order to solve the above-mentioned problems and achieve the object, the invention described in claim 1 is an optical connector fixed to a fixed object plate, and a bottom surface part facing the fixed object plate, and the bottom surface part A housing having a pair of side surfaces sandwiching a rectangular shape and extending in a rectangular tube shape, and relatively approaching along the extending direction of the housing, which is parallel to the bottom surface portion , so as to cover one opening of the housing. And a fixing pin for fixing the housing to the fixing target plate, and a pin into which the fixing pin is inserted in the side surface portion with the direction intersecting the bottom surface portion as an insertion direction. An insertion portion is formed, the closing member has a midway insertion restricting portion extending along the extending direction, and the fixing pin has a pin body and a tip portion extending from the pin body, and Front from housing A state in which the tip protrudes toward the fixation target plate by a predetermined size or more is inserted into the pin insertion portion as a normal state, and the midway insertion restricting portion is inserted into the pin insertion portion in a non-normal state. In this case, the optical connector is in contact with the pin body protruding from the pin insertion portion to the opposite side of the plate to be fixed from the extending direction.

  The invention described in claim 2 is the invention according to claim 1, wherein the side surface portion includes a first guide groove that guides the midway insertion restricting portion when the housing and the closing member are relatively close to each other. A locking arm for locking the closing member is formed, and the locking arm is erected from the side surface part and spaced from each other, and the pair of erected parts. A pair of arm portions extending along the extending direction from each of the installed portions, and the first guide groove is formed between the pair of standing portions. is there.

  The invention described in claim 3 is the invention according to claim 2, wherein the housing further includes a top surface portion that faces the bottom surface portion, and between the locking arm and the top surface portion, A second guide groove extending along the extending direction is formed, and a guide protrusion that engages with the second guide groove is formed on the closing member.

  According to a fourth aspect of the present invention, in the invention according to the third aspect, the pair of closing members are positioned in the second guide groove and sandwich the top surface portion from the opposing direction of the pair of side surface portions. The restriction rib is formed.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the window part through which light can be transmitted in the extending direction and the extension from the periphery of the window part. An optical component having a box-shaped main body formed with ribs protruding in the direction, a front plate formed with an opening through which the rib can be inserted, and a back plate facing the front plate. A shield case covering the main body, wherein the closing member holds the optical component and the shield case, and the housing presses the front plate against the main body when coupled to the closing member A pressing protrusion is provided.

  A sixth aspect of the present invention is the invention according to any one of the first to fourth aspects, wherein the light transmitting portion extends in the extending direction and the extension from the periphery of the window portion. An optical component having a box-shaped main body formed with ribs protruding in the direction, a front plate formed with an opening through which the rib can be inserted, a back plate facing the front plate, and the front plate; And a shielding case that covers the main body portion, and the closing member holds the optical component and the shielding case, and the front plate includes the window. A rib protruding from the periphery of the portion is inserted into the opening, and is bent at the connecting portion side from the end of the opening opposite to the connecting portion and extends away from the main body portion. And the housing is coupled to the closure member It is characterized in that the pressing portion for pressing the main body portion side the the bent portion abuts is provided in the.

  The invention described in claim 7 is the invention according to any one of claims 1 to 4, wherein the window portion through which light can be transmitted in the extending direction, and the extension from the periphery of the window portion. An optical component having a box-shaped main body formed with ribs protruding in the direction, a front plate formed with an opening through which the rib can be inserted, a back plate facing the front plate, and the front plate; And a shielding case that covers the main body, and the closing member holds the optical component and the shielding case, and the back plate is connected to the back plate. The projection case has a projecting piece projecting toward the front plate side with an inclination approaching the main body section as it goes to the section, and the shield case can hold the main body section between the projecting piece and the connecting portion The closing member includes the main body and the back plate. It is characterized in that it has an insertion wall deformed to closer to said back plate the projecting piece is inserted between.

  According to the first aspect of the present invention, when the fixing pin is inserted in an irregular state, the midway insertion restricting portion comes into contact with the pin body of the fixing pin from the extending direction, so that the housing and the blocking member are Is relatively restricted in the extending direction, and the coupling between the housing and the closing member is restricted. That is, the housing and the closing member can be coupled only when the fixing pin is inserted in a normal state and the projecting dimension of the tip portion from the housing is equal to or larger than a predetermined dimension. Accordingly, the fixing pin can be attached to the housing so as to obtain a predetermined protruding dimension. In this way, the fixing failure can be suppressed by inserting and fixing the tip end portion of the fixing pin having a predetermined protruding dimension to the fixing target plate.

  According to the second aspect of the present invention, the locking projection of the closing member is locked by the locking arm of the housing, so that the coupling between the housing and the closing member is maintained, and the inserted fixing pin is properly connected. Can be kept in a state. Further, the pair of arm portions and the midway insertion restricting portion of the locking arm extend in the extending direction, and the first guide groove is formed between the pair of standing portions, so that the midway insertion restricting portion is By guiding the first guide groove along the first guide groove so that the housing and the closing member are relatively close to each other, the workability of the coupling operation of the housing and the closing member can be improved.

  According to the third aspect of the present invention, the second guide groove is formed in the housing and the guide protrusion is formed in the closing member, so that the workability of the connecting operation between the housing and the closing member is further improved. Can be made.

  According to the invention described in claim 4, when a pair of regulating ribs formed on the closing member sandwich the top surface portion from the opposing direction of the pair of side surface portions, an external force is applied to the housing and the closing member. Further, when the regulating rib and the top surface portion come into contact with each other, the relative movement of the housing and the closing member in the opposing direction of the pair of side surface portions is regulated. Therefore, it is suppressed that the force in the opposing direction is applied to the locking arm by the closing member, the locking arm is difficult to bend in the opposing direction, and the release of the locking of the closing member by the locking arm can be suppressed.

  According to the invention described in claim 5, when the shield case is assembled to the main body of the optical component, the shield case is deformed so that the front plate and the rear plate are separated in order to insert the rib into the opening. However, when the housing and the closing member are combined, the front plate is pressed against the main body by the pressing protrusion, thereby suppressing the shading of the shield case with respect to the main body and between the front plate and the main body. A gap can be made difficult to occur. Thus, by making it difficult to produce a gap, it is possible to suppress electromagnetic waves from entering through the gap and to make it difficult for noise to be generated in the main body.

  According to the invention described in claim 6, when the opening and the bent portion are formed in the front plate, when assembling the shield case close to the main body from the end opposite to the connecting portion, It can suppress that the rib of a main-body part interferes with a front plate, and can let a rib penetrate the opening part. Furthermore, when the housing and the closing member are combined, the bent portion is pressed toward the main body by the pressing portion, thereby pressing the front plate against the main body and suppressing the shading of the shield case with respect to the main body. Can do.

  According to the seventh aspect of the present invention, the protruding piece formed on the back plate has an inclination that approaches the main body as it goes to the connecting portion, so that the shield from the end opposite to the connecting portion. When the case is assembled close to the main body, the protruding piece is deformed to the back plate side. When the assembly is completed, the protruding piece is restored, and the main body is held between the protruding piece and the connecting portion. When such a shield case and the main body portion are brought close to the closing member from the end opposite to the connecting portion, the insertion wall portion deforms the protruding piece. When the assembly is completed, the insertion wall is pressed by the restoring force of the protruding piece, so that the entire shield case moves toward the back plate, the front plate is pressed against the main unit, and the shading of the shield case against the main unit Can be suppressed.

  Further, since the insertion wall portion is inserted between the main body portion and the rear plate and the main body portion is sandwiched between the insertion wall portion and the front plate, the distance between the front plate and the rear plate can be increased. In this way, the distance between the front plate and the back plate is widened, and the main body can be held by the shield case, so by assembling the shield case to the main body before holding the main body by the closing member The ribs of the main body and the front plate can be made difficult to interfere with each other.

It is a disassembled perspective view which shows the structure of the whole optical connector which concerns on 1st Embodiment of this invention. It is a perspective view which shows a mode that the optical component of the said optical connector is hold | maintained at the closure member. It is a perspective view which shows a mode that the shield case of the said optical connector is assembled | attached to the said optical component. It is sectional drawing which shows the mode in the middle of the assembly | attachment to the said optical component of the said shield case. It is a perspective view which shows a mode that the said closure member and the housing of the said optical connector are combined. It is sectional drawing which shows a mode that it tried to couple | bond the said closure member and the said housing. It is a side view which shows a mode that the said closure member and the said housing are couple | bonded. It is sectional drawing which shows a mode that the said closure member and the said housing are couple | bonded. It is sectional drawing which shows the said optical connector. It is a top view which shows the said optical connector. It is a rear view which shows the said optical connector. It is a perspective view which shows a mode that a shield case is assembled | attached to an optical component in the optical connector which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the mode in the middle of the assembly | attachment to the said optical component of the said shield case. It is sectional drawing which shows a mode that the housing and closure member of the said optical connector are combined. It is a perspective view which shows a mode that a shield case is assembled | attached to an optical component in the optical connector which concerns on 3rd Embodiment of this invention. It is sectional drawing which shows a mode that the said shield case is assembled | attached to the said optical component. It is a perspective view which shows a mode that the said optical component and the said shield case are assembled | attached to the closure member of the said optical connector. It is sectional drawing which shows a mode that the said optical component and the said shield case are assembled | attached to the said closure member.

  Hereinafter, each embodiment of the present invention will be described with reference to the drawings. In the second and third embodiments, the same constituent members as those described in the first embodiment and the constituent members having the same functions are denoted by the same reference numerals as those in the first embodiment and the description thereof is omitted.

<First Embodiment>
FIG. 1 is an exploded perspective view showing a configuration of the entire optical connector 1 according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which the FOT 2 of the optical connector 1 is held by the aligning plate 4. 3 is a perspective view showing how the shield case 3 of the optical connector 1 is assembled to the FOT 2, and FIG. 4 is a cross-sectional view showing how the shield case 3 is being assembled to the FOT 2. FIG. FIG. 6 is a perspective view showing a state in which the aligning plate 4 and the housing 5 of the optical connector 1 are coupled, and FIG. 6 is a cross-sectional view showing a state in which the aligning plate 4 and the housing 5 are intended to be coupled together. 7 is a side view showing how the aligning plate 4 and the housing 5 are joined together, and FIG. 8 shows how the aligning plate 4 and the housing 5 are joined together. A rear view, FIG. 9 is a sectional view showing the optical connector 1, FIG. 10 is a top view showing the optical connector 1, FIG. 11 is a rear view of the optical connector 1.

  As shown in FIG. 1, the optical connector 1 of the first embodiment holds a FOT (Fiber Optic Transceiver) 2 as an optical component, a shield case 3 that covers the FOT main body 21 of the FOT 2, and the FOT 2 and the shield case 3. An aligning plate 4 as a closing member, a housing 5 coupled to the aligning plate 4, a fixing pin 6 for fixing the housing 5 to a circuit board (not shown) as a fixing target plate, and a window portion 211 of the FOT 2 which will be described later. A lens unit 7 disposed on the side. In the optical connector 1, the traveling direction of communication light is the X direction, the facing direction to the circuit board is the Z direction, and the direction intersecting the X direction and the Z direction is the Y direction. That is, the optical connector 1 is fixed to one side of a circuit board extending along the XY plane, and the optical connector 1 side with respect to the circuit board in the Z direction is an upper side, and the circuit board side with respect to the optical connector 1 is a lower side. In the X direction, the direction in which the light transmitted by the FOT 2 travels is the front side, and the direction in which the light received by the FOT 2 travels is the back side.

  The FOT 2 includes a transmission unit 20A and a reception unit 20B arranged in parallel in the Y direction. The arrangement of the transmission unit 20A and the reception unit 20B may be reversed. The transmitting unit 20A and the receiving unit 20B include a FOT main body 21 as a main body in which a light emitting element or a light receiving element is housed in a resin-like and box-shaped (substantially rectangular parallelepiped) case body, and each element is electrically connected to a circuit board. A lead frame 22 for connection to The FOT main body 21 has a circular window 211 that can transmit light transmitted and received by each element, and an annular rib 212 that protrudes from the periphery of the window 211 in the X direction. Are arranged toward the front side in the X direction. That is, light traveling along the X direction is transmitted through the window 211. The lead frame 22 has one end connected to each element and the other end inserted into a hole formed in the circuit board and fixed by soldering.

  The shield case 3 is a member for performing electromagnetic shielding, and is formed by pressing a conductive thin metal plate. The shield case 3 corresponds to each of the transmission unit 20A and the reception unit 20B and is integrated. It is comprised by the case units 30A and 30B formed in this. Each of the case units 30A and 30B includes a front plate 31 that covers the front side of the FOT main body 21 in the X direction (window 211 side), and a back plate 32 that faces the front plate 31 and covers the rear side of the X direction (see FIG. 4). ), A top plate 33 as a connecting portion that covers the FOT main body 21 from above and connects the front plate 31 and the rear plate 32, and a side plate 34 that covers the side surface (a surface substantially parallel to the ZX plane) of the FOT main body 21. And having. That is, case unit 30A, 30B is formed in the box shape opened on the Z direction downward side. The front plate 31, the top plate 33, and the side plate 34 are formed by bending a single metal plate. By deforming the bent portion between the front plate 31 and the top plate 33 as a hinge, the front plate 31 rotates about the hinge, and the sizes of the openings of the case units 30A and 30B can be adjusted. ing. The front plate 31 and the back plate 32 have a separation dimension that can sandwich the FOT main body 21 and a back vertical wall 421 described later.

  An opening 311 through which the rib 212 of the FOT main body 21 can be inserted is formed in the front plate 31. As shown in FIG. 4, the back plate 32 is formed with a projecting portion 321 as a protruding piece having a spring property by being partially ejected to the front side in the X direction. The side plate 34 is formed with leg portions 341 extending downward in the Z direction, and the leg portions 341 are connected to the circuit board in the same manner as the lead frame 22 of the FOT 2.

  The aligning plate 4 is a resin molded product having insulating properties, and as shown in FIG. 4, a mounting portion 41 on which the FOT main body 21 is mounted and a vertical wall 42 erected from the mounting portion 41. And a wall-like sandwiching wall 43 erected from the mounting portion 41 on the back side of the vertical wall 42, and a pair of side walls 44 positioned on both sides in the Y direction of the sandwiching wall 43. The mounting portion 41 is formed with a plurality of through holes and slits for inserting and aligning the lead frame 22 of the FOT 2 and the leg portion 341 of the shield case 3 and making them difficult to bend.

  The vertical wall 42 is substantially parallel to the YZ plane and is substantially parallel to the ZX plane between the rear vertical wall 421 as an insertion wall portion along the rear surface of the FOT main body 21 and the FOT main body 21 from the side wall 44 in the Y direction. And a side wall 422 to be sandwiched. Since the sandwiching wall 43 is spaced apart from the rear vertical wall 421, the housing groove 45 (see FIG. 5) holds the rear plate 32 of the shield case 3 between the sandwiching wall 43 and the rear vertical wall 421. 4) is formed. In addition, a contact rib 431 that protrudes from the inside to a cover plate 53 of the housing 5 to be described later is formed at a substantially central portion in the Y direction on the upper end side of the holding wall 43.

  The side wall 44 includes a regulation rib 441 projecting upward from the clamping wall 43, a guide projection 442 projecting outward from the regulation rib 441 in the Y direction, and a latch projection that is latched by a latch arm 521 described later. A lock beak 443 and a rod-shaped midway insertion restricting portion 444 extending toward the front side along the X direction are formed. The lock beak 443 and the midway insertion restricting portion 444 are disposed at substantially the same height in the Z direction. Moreover, when the assembly of the optical connector 1 is completed as will be described later, the midway insertion restricting portion 444 can cover the entire pin insertion portion 523 described later from the upper side in the Z direction as shown in FIG. It has such an X direction dimension. The midway insertion restricting portion 444 only needs to have an X-direction dimension that can cover at least a part of the fixing pin 6 inserted into the pin insertion portion 523.

  The housing 5 is an insulative resin molded product, and faces the circuit board and extends along the XY plane. The housing 5 sandwiches the bottom 51 from the Y direction and extends along the ZX plane. And a cover plate 53 as a top surface portion that is located on the upper side in the Z direction of the bottom surface portion 51 and extends substantially parallel to the bottom surface portion 51, and the X direction is defined as the extending direction. The inner space 5A is formed.

  A locking arm 521 that locks the lock beak 443 of the aligning plate 4 is formed on the side surface portion 52, and the locking arm 521 is erected along the Y direction at the X direction rear side end portion of the side surface portion 52. A pair of raised portions 521A, a pair of arm portions 521B extending from the tips of the pair of standing portions 521A to the back side along the X direction, and an arm tip connecting the tips of the pair of arm portions 521B Part 521C. A first guide groove 522 that guides the midway insertion restricting portion 444 when the housing 5 and the aligning plate 4 are coupled is formed between the pair of standing portions 521A. The locking arms 521 formed on each of the pair of side surfaces 52 are arranged so as to sandwich the aligning plate 4 from the Y direction when the housing 5 and the aligning plate 4 are coupled.

  Further, the side surface portion 52 is formed with a cylindrical pin insertion portion 523 into which the fixing pin 6 is inserted with the Z direction as an insertion direction. Inside the pin insertion portion 523, an insertion hole 523A having an X direction and a Y dimension that are equal to or slightly smaller than the fixing pin 6 is formed, and the fixing pin 6 is press-fitted. As shown in FIG. 6, the insertion hole 523 </ b> A is provided with a sandwiched portion 524. When the sandwiched portion 524 is sandwiched between the fixing pin 6 and the circuit board from the Z direction, the housing 5 is fixed to the fixing pin 6. To be fixed to the circuit board. In addition, the fixing pin 6 has a bifurcated tip portion 62 as described later, and the sandwiched portion 524 is sandwiched by the tip portion 62 from the X direction.

  A second guide groove 525 extending in the X direction is formed between the cover plate 53 and the pair of locking arms 521. The cover plate 53 and the pair of locking arms 521 are separated from each other by substantially the same dimension as the thickness of the regulating rib 441 of the aligning plate 4 in the Y direction, and the guide protrusion 442 is engaged with the second guide groove 525. ing. In addition, on the lower surface of the cover plate 53, a restriction groove 531 (see FIG. 11) is formed at a position corresponding to the contact rib 431.

  Further, as shown in FIG. 8, the bottom surface portion 51 is formed with a pressing protrusion 54 that protrudes toward the back in the X direction. Further, a pair of cylindrical sleeves 55 for holding an optical fiber (not shown) and the lens unit 7 are provided in the inner space 5A of the housing 5. As shown in FIG. 9, the pair of sleeves 55 corresponds to each of a pair of lens portions 72 described later.

  The fixing pin 6 is configured by punching an appropriate metal member, for example, and includes a pin main body 61 and a pair of distal end portions 62 having a two-sided shape extending from the pin main body 61 and extending downward in the Z direction. The fixed pin 6 inserted into the pin insertion portion 523 sandwiches the sandwiched portion 524 from the X direction by the pair of tip portions 62. A portion of the distal end portion 62 that protrudes downward in the Z direction from the pin insertion portion 523 is fixed to the circuit board in the same manner as the lead frame 22 of the FOT 2 and the leg portion 341 of the shield case 3.

  The lens unit 7 is formed by integrally forming a pair of flat substrates 71 and a pair of lens portions 72 erected from each substrate 71 with a transparent resin having predetermined optical characteristics. One of the pair of lens portions 72 condenses the light from the light emitting element of the FOT 2 on the optical fiber side, and the other condenses the light from the optical fiber on the light receiving element of the FOT 2.

  Hereinafter, the assembly method and procedure of the optical connector 1 will be described. First, as shown in FIGS. 2A and 2B, the FOT 2 is brought closer to the aligning plate 4 from the upper side in the Z direction, and the FOT main body 21 is placed on the placement portion 41. At this time, the FOT main body 21 is disposed between the side vertical wall 422 and the side wall 44 and the back surface of the FOT main body 21 is set along the rear vertical wall 421.

  Next, as shown in FIGS. 3A and 3B, the shield case 3 is placed on the FOT main body 21 from the upper side in the Z direction. At this time, as shown in FIG. 4, the back plate 32 of the shield case 3 is inserted into the housing groove 45. The projecting portion 321 ejected to the front side in the X direction on the back plate 32 is elastically deformed to the back side by contacting the back vertical wall 421. Further, the shield case 3 is elastically deformed so that the X-direction dimension of the opening on the lower side is increased so that the front plate 31 and the rib 212 of the FOT main body 21 do not interfere with each other. When the assembly of the shield case 3 is completed, the rib 212 is inserted into the opening 311 of the front plate 31 and the shield case 3 attempts to restore the original shape. That is, when the projecting portion 321 of the back plate 32 presses the back vertical wall 421, the entire shield case 3 tries to move to the back side in the X direction, and the front plate 31 and the back plate 32 try to approach each other. 31 approaches the front surface of the FOT main body 21. The intermediate assembly 10 is formed by the FOT 2, the shield case 3, and the aligning plate 4 assembled in this manner.

  Next, the fixing pin 6 is inserted into the pin insertion portion 523 of the housing 5, and as shown in FIGS. 5 to 8, the housing 5 and the intermediate assembly 10 are relatively approached along the X direction. The housing 5 and the aligning plate 4 are coupled so that the opening on the side is covered by the aligning plate 4. At this time, the halfway insertion restricting portion 444 is inserted and guided through the first guide groove 522, and the pair of arm portions 521A of the locking arm 521 and the halfway insertion restricting portion 444 are substantially parallel to each other. Further, the guide protrusion 442 is engaged with the second guide groove 525 to be guided. That is, the guide protrusion 442 is in sliding contact with the upper end of the upper arm portion 521A of the locking arm 521, and the regulation rib 441 is in sliding contact with both ends of the cover plate 53 in the Y direction. Further, the contact rib 431 is fitted into the restriction groove 531 of the cover plate 53.

  Here, the fixed pin 6 to be inserted into the pin insertion portion 523 is inserted to the normal position with the position where the lower end of the pin body 61 abuts against the sandwiched portion 524 as the normal position as shown in FIG. It becomes a normal state. In the fixed pin 6 in the normal state, the protrusion dimension L of the tip end portion 62 is substantially equal to the predetermined normal protrusion dimension. On the other hand, as shown in FIG. 6C, when the fixing pin 6 is not inserted to the normal position, that is, when the protruding dimension L of the tip 62 is smaller than the normal protruding dimension, the fixing pin 6 is in the non-normal state. It becomes. The projecting dimension of the tip 62 is a projecting dimension from a portion of the housing 5 that is located on the lowest side in the Z direction, and is inserted into the circuit board when the housing 5 is placed on the circuit board. It means the dimensions that can be used. In the present embodiment, the projecting dimension from the lower end of the pin insertion portion 523 is the projecting dimension of the distal end portion 62.

  When the fixing pin 6 is inserted in the normal state as shown in FIG. 6A, when the housing 5 and the intermediate assembly 10 are relatively approached in the X direction, as shown in FIG. And the midway insertion restricting portion 444 do not interfere with each other, and the relative approach is not restricted. Further, when the midway insertion restricting portion 444 is adjacent to the fixing pin 6 in the Z direction and an upward external force is applied to the fixing pin 6, the fixing pin 6 becomes in an irregular state or the pin insertion portion 523 It is regulated that it will come off. On the other hand, when the fixing pin 6 is inserted in an irregular state as shown in FIG. 6 (C), if the housing 5 and the intermediate assembly 10 are relatively moved in the X direction, the pin insertion portion of the pin main body 61 will be described. The midway insertion restricting portion 444 comes into contact with the portion protruding upward from 523 from the X direction, and relative approach is restricted.

  Further, the housing 5 and the intermediate assembly 10 are coupled by the locking beak 443 being locked by the locking arm 521 as shown in FIG. 5B, and the assembly of the optical connector 1 is completed. When the locking arm 521 gets over the lock beak 443, it bends and deforms outward in the Y direction, and the groove width in the Y direction of the second guide groove 525 widens, but the guide protrusion 442 is provided on the front side in the X direction from the lock beak 443. Thus, the guide protrusion 442 is difficult to drop off from the second guide groove 525. 8B, the lower end portion of the front plate 31 of the shield case 3 is pressed by the pressing protrusion 54 formed on the housing 5, and the front plate 31 is pressed against the front surface of the FOT main body 21 of the FOT 2. . That is, a gap is hardly generated between the front plate 31 and the FOT main body 21, and rattling of the shield case 3 with respect to the FOT main body 21 is suppressed. Further, the pressing protrusion 54 presses the FOT main body 21 against the rear vertical wall 421 via the front plate 31, and rattling of the FOT main body 21 and the shielding case 3 with respect to the aligning plate 4 is suppressed.

  Here, the positional relationship of each part in the optical connector 1 assembled as described above will be described. First, as shown in FIGS. 9 and 10, the fixing pin 6 inserted into the pin insertion portion 523 is covered by the midway insertion restriction portion 444 from above in the Z direction. FIG. 9 shows a cross section along a plane parallel to the XY plane and including the midway insertion restricting portion 444. Further, the cover plate 53 of the housing 5 is sandwiched between the pair of regulating ribs 441 of the aligning plate 4 from the Y direction. Further, as shown in FIG. 11, the protruding contact rib 431 of the aligning plate 4 is fitted in the restriction groove 531 of the cover plate 53.

  According to this embodiment, there are the following effects. That is, when the fixing pin 6 is inserted in a normal state and the protrusion dimension L of the tip end portion 62 is equal to or greater than the normal protrusion dimension, the housing 5 and the intermediate assembly 10 are coupled to obtain a predetermined protrusion dimension. Thus, the fixing pin 6 can be attached to the housing 5. In this way, fixing failure can be suppressed by inserting and fixing the tip 62 of the fixing pin 6 having a predetermined protruding dimension to the circuit board.

  Further, the intermediate insertion restricting portion 444 is guided along the arm portion 521A while being guided by the first guide groove 522 so that the housing 5 and the intermediate assembly 10 are relatively close to each other, whereby the housing 5 and the intermediate assembly 10 are joined. Can be improved. Further, the guide protrusion 442 of the aligning plate 4 is engaged and guided in the second guide groove 525 of the housing 5, thereby further improving the workability of the connecting work between the housing 5 and the intermediate assembly 10. it can.

  Further, the pair of regulating ribs 441 formed on the aligning plate 4 sandwich the cover plate 53 from the Y direction, and the abutment rib 431 fits into the regulating groove 531, so that the housing 5 and the intermediate assembly 10 are connected. When an external force is applied, the regulation rib 441 and the cover plate 53 come into contact with each other from the Y direction, and the contact rib 431 comes into contact with the cover plate 53 from the Y direction inside the regulation groove 531, thereby The relative movement of the assembly 10 in the Y direction is restricted. Therefore, it is suppressed that the aligning plate 4 applies a force in the Y direction to the locking arm 521, the locking arm 521 is difficult to bend in the opposite direction, and the locking arm 521 is prevented from releasing the lock beak 443. be able to.

  Furthermore, the lower end portion of the front plate 31 of the shield case 3 is pressed by the pressing protrusion 54 formed on the housing 5, and rattling of the FOT body 21 and the aligning plate 4 of the shield case 3 is suppressed. The distance between the lens unit 7 held on the sleeve 55 of the housing 5 and the FOT main body 21 can be easily kept constant, and communication by the FOT main body 21 can be stabilized. Further, since the gap is not easily generated between the front plate 31 and the FOT main body 21, it is possible to suppress the electromagnetic wave from entering through the gap and make it difficult to generate noise in the FOT main body 21.

Second Embodiment
FIG. 12 is a perspective view showing a state in which the shield case 3b is assembled to the FOT 2 in the optical connector 1b according to the second embodiment of the present invention, and FIG. 13 is a cross section showing a state in the middle of the assembly of the shield case 3b to the FOT 2 FIG. 14 is a cross-sectional view illustrating a state in which the housing 5 of the optical connector 1 and the aligning plate 4 are coupled.

  As shown in FIGS. 12 to 14, the optical connector 1 b of the second embodiment includes a shield case 3 b instead of the shield case 3 of the optical connector 1 of the first embodiment.

  An opening 311 and a bent portion 312 are formed in the front plate 31 of the shield case 3b. The bent portion 312 is bent toward the front side in the X direction at a substantially central portion in the Z direction of the opening 311 and extends away from the FOT main body 21. A region from the bent portion of the front plate 31 to the lower end portion in the Z direction is a bent portion 312. Further, the front plate 31 only needs to have the bent portion 312 formed by being bent on the upper side of the lower end portion of the opening 311. The front plate 31 is continuous with the side plate 34 at a portion above the bent portion 312 and is separated from the side plate 34 at the bent portion 312.

  Further, the housing 5 of this embodiment is not formed with the pressing protrusion 54 protruding to the X direction rear side as in the first embodiment, and this portion (that is, the upper portion of the bottom surface portion 51 on the X direction rear side end surface). ) Is the pressing portion 56 (see FIG. 14). Note that a protrusion may be formed on the pressing portion 56 as in the first embodiment.

  A method and procedure for assembling such an optical connector 1b will be described. Similar to the first embodiment, after placing the FOT 2 on the aligning plate 4, the shield case 3 b is put on the FOT main body 21 from the upper side in the Z direction. At this time, as shown in FIG. 13, the bent portion 312 hardly interferes with the rib 212 of the FOT main body 21, and the shield case 3 b does not need to be deformed or hardly deformed. When the shield case 3b is assembled to the FOT main body 21 to form the intermediate assembly 10b as shown in FIG. 12 (B), the housing 5 and the intermediate assembly 10b are connected as shown in FIGS. 14 (A) and 14 (B). Connected in the X direction relative to each other.

  When the housing 5 and the intermediate assembly 10b are coupled, the pressing portion 56 comes into contact with the bent portion 312 and presses to the rear side in the X direction. Therefore, the bent portion 312 is deformed so as to approach the FOT main body 21, the gap between the front plate 31 and the front surface of the FOT main body 21 is reduced, and rattling of the shield case 3 b with respect to the FOT main body 21 is suppressed. The pressing portion 56 may be pressed so that the bent portion 312 contacts the front surface of the FOT main body 21. Furthermore, due to the restoring force generated in the bent portion 312, the entire shield case 3 tries to move to the back side, and the portion of the front plate 31 above the bent portion 312 is pressed against the FOT main body 21 and the FOT main body 21. Is pressed against the back vertical wall 421. Therefore, rattling of the FOT main body 21 and the shield case 3b with respect to the aligning plate 4 is suppressed.

  According to this embodiment, there are the following effects. That is, since the opening 311 and the bent portion 312 are formed in the front plate 31, the rib 212 can be prevented from interfering with the front plate 31 when the shield case 3 is assembled to the FOT main body 21. . Further, the bent portion 312 is pressed by the pressing portion 56, and rattling of the FOT main body 21 and the shield case 3b with respect to the aligning plate 4 is suppressed, so that the lens unit 7 held by the sleeve 55 of the housing 5 is suppressed. And the distance between the FOT body 21 and the FOT body 21 can be kept substantially constant, and communication by the FOT body 21 can be stabilized.

<Third Embodiment>
FIG. 15 is a perspective view showing how the shield case 3c is assembled to the FOT 2 in the optical connector according to the third embodiment of the present invention, and FIG. 16 is a cross-sectional view showing how the shield case 3c is assembled to the FOT 2. FIG. 17 is a perspective view showing how the FOT 2 and the shield case 3c are assembled to the aligning plate 4 of the optical connector, and FIG. 18 is a cross-sectional view showing how the FOT 2 and the shield case 3c are assembled to the aligning plate 4. .

  In the optical connector of the third embodiment, as shown in FIGS. 15 to 18, a shield case 3 c is used instead of the shield case 3 of the optical connector 1 of the first embodiment.

  A projecting piece 322 having a spring property is formed on the back plate 32 of the shield case 3c by being partially ejected to the front side in the X direction. The projecting piece 322 projects with an inclination toward the front side in the X direction (that is, closer to the FOT main body 21) with the vicinity of the lower end in the Z direction of the back plate 32 as the base end toward the upper top plate 33 side. ing. Further, a stepped portion 323 is formed on the back plate 32 so as to approach the front plate 31 at the upper end portion. The distance between the upper portion 324 above the step portion 323 in the back plate 32 and the front plate 31 is substantially equal to the dimension in the X direction of the portion excluding the rib 212 in the FOT main body 21, and the lower side below the step portion 323. The distance between the portion 325 and the front plate 31 is substantially equal to the sum of the X-direction dimension of the FOT main body 21 and the X-direction dimension of the rear vertical wall 421 of the aligning plate 4, and includes the rib 212 of the FOT main body 21. Greater than dimensions.

  A method and procedure for assembling such an optical connector will be described. First, as shown in FIGS. 15A and 15B, the shield case 3c is put on the FOT main body 21 before being placed on the aligning plate 4 from the upper side in the Z direction. At this time, as shown in FIGS. 16A and 16B, the back side of the FOT main body 21 abuts against the protruding piece 322 and is deformed to the X direction back side. As a result, the front plate 31 and the rib 212 can be prevented from interfering with each other. Since the FOT main body 21 is pressed forward by the restoring force of the protruding piece 322, when the shield case 3c and the FOT main body 21 are further brought closer in the Z direction, the upper end of the rib 212 enters the opening 311. The FOT main body 21 has an inclination such that the upper side is directed to the front side in the X direction, and the whole is inclined.

  When the shield case 3c is further brought closer to the Z direction with the FOT main body 21 tilted as described above, the entire rib 212 is inserted into the opening 311 as shown in FIG. 21 is eliminated, and the front surface of the FOT main body 21 is pressed against the front plate 31 to restore the protruding piece 322. The tip of the protruding piece 322 abuts on the lower surface of the FOT main body 21 in the vicinity of the end on the rear side in the X direction, and holds the FOT main body 21 between the top plate 33. That is, the FOT main body 21 is supported by the protruding piece 322 so that it does not fall by its own weight. At this time, the FOT main body 21 is sandwiched between the front plate 31 and the upper portion 324 of the back plate 32 above the ribs 212, and the front plate 31 and the lower portion 325 are positioned below the lower portion. Sandwiched between them.

  Next, as shown in FIGS. 17A and 17B, the FOT 2 and the shield case 3c assembled in this way are assembled close to the aligning plate 4 from the upper side in the Z direction. At this time, as shown in FIG. 18A, the back plate 32 is inserted into the receiving groove 45, and the back vertical wall 421 is inserted between the back surface of the FOT main body 21 and the back plate 32. Match. When the FOT 2 and the shield case 3c are brought closer to the aligning plate 4 from the state shown in FIG. 18A, the projecting piece 322 in contact with the back vertical wall 421 is bent upward and deformed. The tip does not support the bottom surface of the FOT main body 21, but comes into contact with the back surface and presses forward. Since the rib 212 is inserted through the opening 311 and the FOT main body 21 is pressed forward by the protruding piece 322, the FOT main body 21 is prevented from falling.

  As the FOT 2 and the shield case 3 c are further brought closer to the aligning plate 4, the protruding piece 322 is gradually accommodated in the accommodation groove 45. At this time, even if the protruding piece 322 does not come into contact with the FOT main body 21, the FOT main body 21 comes to be sandwiched between the back vertical wall 421 and the front plate 31, and the FOT main body 21 may move to the back side. Be regulated. Therefore, the rib 212 is difficult to be removed from the opening 311 and the fall of the FOT main body 21 is suppressed.

  As shown in FIG. 18B, when the FOT main body 21 is placed on the placement portion 41, the assembly of the FOT 2 and the shield case 3c to the aligning plate 4 is completed, and the intermediate assembly 10c is formed. . When the protruding piece 322 accommodated in the accommodation groove 45 presses the back vertical wall 421 by the restoring force, the entire shield case 3c tends to move to the X direction back side. Therefore, the front plate 31 presses the front surface of the FOT main body 21 to press the FOT main body 21 against the back vertical wall 421, and the back plate 32 presses against the sandwiching wall 43. Is suppressed, and rattling of the FOT main body 21 and the shield case 3c with respect to the aligning plate 4 is suppressed. The intermediate assembly 10c is coupled to the housing 5 in the same manner as in the first and second embodiments.

  According to this embodiment, there are the following effects. That is, the distance between the lower portion 325 of the back plate 32 and the front plate 31 is larger than the dimension in the X direction including the ribs 212 of the FOT main body 21, and the FOT main body 21 is shielded before being held by the aligning plate 4. Since the case 3c can be assembled and held, the rib 212 and the front plate 31 can be made difficult to interfere when the shield case 3c is assembled to the FOT main body 21.

  Further, the bent portion 312 is pressed by the pressing portion 56, and rattling of the FOT main body 21 and the shield case 3b with respect to the aligning plate 4 is suppressed, so that the lens unit 7 held by the sleeve 55 of the housing 5 is suppressed. And the distance between the FOT body 21 and the FOT body 21 can be kept substantially constant, and communication by the FOT body 21 can be stabilized.

  In addition, this invention is not limited to the said 1st-3rd embodiment, The other modification etc. which can achieve the objective of this invention are included, and a deformation | transformation etc. which are shown below are also contained in this invention.

  For example, in the first embodiment, the state in which the pin body 61 of the fixing pin 6 is completely inserted until it comes into contact with the sandwiched portion 524 is set to the normal state. However, the projecting dimension of the tip 62 is sufficiently secured. For example, the state from the state before the complete insertion to the state of the complete insertion may be set as the normal state.

  In the first embodiment, when the housing 5 and the intermediate assembly 10 are relatively close to each other, the midway insertion restricting portion 444 is guided in the first guide groove 522 and the guide protrusion 442 is guided in the second guide groove 525. However, only one of these guide mechanisms may be provided. Further, the guide mechanism may be omitted if the housing 5 and the intermediate assembly 10 are not easily displaced when relatively approaching and workability is sufficiently ensured.

  In the first embodiment, the pair of restriction ribs 441 formed on the aligning plate 4 sandwich the cover plate 53 from the Y direction, and the contact rib 431 fits into the restriction groove 531, Although the relative movement in the Y direction is restricted with respect to the intermediate assembly 10, only one of these mechanisms for restricting the relative movement in the Y direction may be provided. Further, when the locking arm 521 is difficult to be deformed and the locking is difficult to be released, the mechanism for restricting the relative movement in the Y direction may be omitted.

  In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

1, 1b Optical connector 2 FOT (optical component)
3, 3b, 3c Shield case 4 Aligning plate (blocking member)
5 Housing 6 Fixing Pin 21 FOT Body (Main Body)
31 Front plate 32 Back plate 33 Top plate (connection part)
211 Window part 212 Rib 311 Opening part 312 Bending part 322 Protruding piece 421 Back vertical wall (insertion wall part)
441 Restriction rib 442 Guide protrusion 444 Midway insertion restriction part 51 Bottom part 52 Side part 53 Cover plate (top surface part)
54 Pressing projection 56 Pressing portion 521 Locking arm 521A Standing portion 521B Arm portion 522 First guide groove 523 Pin insertion portion 525 Second guide groove 61 Pin body 62 Tip portion

Claims (7)

An optical connector that is fixed to a fixed plate,
A bottom portion facing the fixing target plate, and a housing extending in a rectangular tube shape with a pair of side portions sandwiching the bottom portion;
A closing member that is coupled relatively close along the extending direction of the housing that is parallel to the bottom surface so as to cover one opening of the housing;
A fixing pin for fixing the housing to the fixation target plate,
The side portion is formed with a pin insertion portion into which the fixing pin is inserted with the direction intersecting the bottom surface portion as an insertion direction.
The closing member has a midway insertion restricting portion extending along the extending direction,
The fixing pin has a pin main body and a tip portion extending from the pin main body, and the pin insertion portion is defined as a normal state in which the tip portion protrudes from the housing toward the fixing target plate by a predetermined dimension or more. Inserted into
The midway insertion restricting portion extends from the pin insertion portion to the pin main body protruding to the opposite side to the fixation target plate when the fixing pin is inserted into the pin insertion portion in an irregular state. An optical connector that abuts from a direction. The side portion is formed with a first guide groove for guiding the midway insertion restricting portion when the housing and the closing member are relatively close to each other, and a locking arm for locking the closing member.
The locking arms are erected from the side surface part and spaced apart from each other, and a pair of arms extending from the pair of erected parts along the extending direction. And
The optical connector according to claim 1, wherein the first guide groove is formed between the pair of standing portions. The housing further includes a top surface portion facing the bottom surface portion,
A second guide groove extending along the extending direction is formed between the locking arm and the top surface portion.
The optical connector according to claim 2, wherein a guide protrusion that engages with the second guide groove is formed on the closing member.   The pair of regulating ribs that are located in the second guide groove and sandwich the top surface portion from the facing direction of the pair of side surface portions are formed on the closing member. Optical connector. An optical component having a window part capable of transmitting light in the extending direction, and a box-shaped main body part formed with ribs protruding from the periphery of the window part in the extending direction;
A front plate formed with an opening through which the rib can be inserted, and a shield case having a back plate facing the front plate and covering the main body,
The closing member holds the optical component and the shield case,
5. The optical connector according to claim 1, wherein the housing is provided with a pressing protrusion that presses the front plate against the main body when coupled to the closing member. 6. . An optical component having a window part capable of transmitting light in the extending direction, and a box-shaped main body part formed with ribs protruding from the periphery of the window part in the extending direction;
A shield that covers the main body by having a front plate formed with an opening through which the rib can be inserted, a back plate facing the front plate, and a connecting portion for connecting the front plate and the back plate. A case, and
The closing member holds the optical component and the shield case,
In the front plate, a rib protruding from the periphery of the window portion is inserted into the opening portion, and the front plate is bent on the connecting portion side with respect to an end portion on the opposite side to the connecting portion in the opening portion. A bent portion extending away from the
5. The pressing portion according to claim 1, wherein the housing is provided with a pressing portion that abuts on the bent portion and presses the body portion when the housing is coupled to the closing member. The optical connector as described in. An optical component having a window part capable of transmitting light in the extending direction, and a box-shaped main body part formed with ribs protruding from the periphery of the window part in the extending direction;
A shield that covers the main body by having a front plate formed with an opening through which the rib can be inserted, a back plate facing the front plate, and a connecting portion for connecting the front plate and the back plate. A case, and
The closing member holds the optical component and the shield case,
The back plate has a protruding piece that protrudes toward the front plate side with an inclination approaching the main body as it goes to the connecting portion,
The shield case is configured to be able to hold the main body portion between the protruding piece and the connecting portion,
The said closing member has an insertion wall part inserted between the said main-body part and the said back surface plate, and deform | transforms the said protrusion piece so that it may approach this back surface plate. The optical connector according to item 1.

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