WO2012096062A1 - Connector - Google Patents

Connector Download PDF

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Publication number
WO2012096062A1
WO2012096062A1 PCT/JP2011/077358 JP2011077358W WO2012096062A1 WO 2012096062 A1 WO2012096062 A1 WO 2012096062A1 JP 2011077358 W JP2011077358 W JP 2011077358W WO 2012096062 A1 WO2012096062 A1 WO 2012096062A1
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WO
WIPO (PCT)
Prior art keywords
plug
receptacle
external electrode
axis direction
connector
Prior art date
Application number
PCT/JP2011/077358
Other languages
French (fr)
Japanese (ja)
Inventor
裕史 浅井
力 浦谷
統久 玉澤
厚史 小西
Original Assignee
株式会社村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Priority to CN2011800559689A priority Critical patent/CN103221860A/en
Priority to JP2012552638A priority patent/JP5556905B2/en
Publication of WO2012096062A1 publication Critical patent/WO2012096062A1/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • H01R13/22Contacts for co-operating by abutting
    • H01R13/24Contacts for co-operating by abutting resilient; resiliently-mounted
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4292Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4274Electrical aspects

Definitions

  • the present invention relates to a connector, and more particularly to a connector used when transmitting a signal through an optical fiber.
  • FIG. 11 is an external perspective view of the connector 500 described in Patent Document 1.
  • FIG. 11 is an external perspective view of the connector 500 described in Patent Document 1.
  • the connector 500 includes a plug-side connector 520, a receptacle-side connector 540, electrical wiring 550, and an IC driver 560, as shown in FIG.
  • the plug-side connector 520 is provided at one end of the optical fiber 502 and is configured to be detachable from the receptacle-side connector 540.
  • the plug-side connector 520 includes a photoelectric conversion element.
  • Receptacle side connector 540 is mounted on substrate 503.
  • the IC driver 560 is a circuit that processes a signal transmitted through the optical fiber 502.
  • the electrical wiring 550 electrically connects the receptacle-side connector 540 and the IC driver 560.
  • the connector 500 described in Patent Document 1 has a problem that it is difficult to obtain a high SN ratio.
  • an IC driver 560 is provided outside the receptacle-side connector 540. Therefore, an electrical wiring 550 for connecting the receptacle-side connector 540 and the IC driver 560 is provided.
  • a photoelectric conversion element such as a photodiode can output only an electric signal having a very weak current value. Therefore, the current value of the electric signal flowing through the electric wiring 550 is also weak. If noise is mixed in such an electric signal having only a weak current value, the SN ratio is greatly reduced.
  • the connector 500 described in Patent Document 1 since the receptacle-side connector 540 and the IC driver 560 are separated from each other, it is difficult to obtain a high SN ratio.
  • an object of the present invention is to provide a connector capable of obtaining a high S / N ratio.
  • a connector includes a plug provided at one end of an optical fiber, a receptacle to which the plug is mounted from above, an electric circuit unit, and a circuit board on which the electric circuit unit and the receptacle are mounted.
  • the plug is provided on a side surface of the plug body, a plug body, a light receiving element that is provided in the plug body and converts an optical signal output from the optical fiber into an electrical signal,
  • a first external electrode electrically connected to the light receiving element, and the receptacle includes a receptacle body provided with an opening in which the plug is mounted from above, and the plug is the opening.
  • a connector capable of obtaining a high S / N ratio can be provided.
  • FIG. 1 is an external perspective view of a connector according to an embodiment of the present invention. It is the external appearance perspective view which isolate
  • FIG. 8A is a diagram used for explaining the fitting force when the plug and the receptacle are fitted at the four corners of the plug.
  • FIG. 8A is a diagram used for explaining the fitting force when the plug and the receptacle are fitted at the four corners of the plug.
  • FIG. 8B is a diagram used for explaining the fitting force when the plug and the receptacle are fitted at other than the four corners of the plug. It is a figure showing the front-end
  • 1 is an external perspective view of a connector described in Patent Document 1.
  • FIG. 1 is an external perspective view of a connector 1 according to an embodiment of the present invention.
  • FIG. 2 is an external perspective view in which the plug 10 is separated from the connector 1.
  • FIG. 3 is an exploded perspective view of the plug 10.
  • FIG. 4 is a diagram illustrating a state in which the receptacle body 21 and the electric circuit unit 30 are mounted on the circuit board 40.
  • the connector 1 includes a plug 10, a receptacle 20, an electric circuit unit 30, and a circuit board 40.
  • the plug 10 is provided at one end of the optical fiber 50 and converts an optical signal into an electric signal or converts an electric signal into an optical signal.
  • the direction in which the optical fiber 50 extends is defined as the x-axis direction
  • the vertical direction is defined as the z-axis direction
  • the direction orthogonal to the x-axis direction and the z-axis direction is defined as the y-axis direction.
  • the x-axis direction, the y-axis direction, and the z-axis direction are orthogonal to each other.
  • the circuit board 40 has an electric circuit on its surface and inside, and has a mounting surface 43 parallel to the xy plane, as shown in FIGS. Further, a hole 41 is provided in the mounting surface 43 of the circuit board 40.
  • the holes 41 are provided near the side on the positive side in the y-axis direction and near the side on the negative direction side in the y-axis direction on the mounting surface 43 and face each other.
  • the receptacle 20 and the electric circuit unit 30 are mounted so as to be arranged in this order from the positive direction side to the negative direction side in the x-axis direction.
  • the optical fiber 50 includes a coating 52 and a core wire 54.
  • the core wire 54 includes a core and a clad made of glass or resin.
  • the coating 52 is UV, fluorine, silicone resin, polycarbonate, acrylic, or a mixture thereof, and covers the core wire 54.
  • the coating 52 is removed and the core wire 54 is exposed as shown in FIG.
  • the plug 10 has a rectangular shape when viewed from the positive side (upper side) in the z-axis direction, and includes a plug body 13, a ferrule 17, and a metal member 18, as shown in FIG.
  • the plug body 13 includes a substrate 11, a light receiving element 12, a sealing resin 15, external electrodes 16a and 16b, terminal portions 19a and 19b, and vias V1 and V2.
  • the substrate 11 is a resin substrate having a rectangular parallelepiped shape.
  • a light receiving element 12 is mounted on the side surface of the substrate 11 on the positive side in the x-axis direction, as will be described below.
  • the light receiving element 12 is made of a semiconductor element, and converts the optical signal output from the optical fiber 50 into an electrical signal.
  • the external electrodes 16a and 16b are provided on the negative side surface in the x-axis direction of the substrate 11 so as to be arranged in this order from the positive direction side in the y-axis direction to the negative direction side.
  • the terminal portions 19a and 19b are provided on the side surface of the substrate 11 on the positive direction side in the x-axis direction so as to be arranged in this order from the positive direction side in the y-axis direction to the negative direction side.
  • the external electrode 16a and the terminal portion 19a face each other and are connected by the via V1.
  • the external electrode 16b and the terminal portion 19b face each other and are connected by a via V2.
  • the light receiving element 12 is mounted on the terminal portion 19a. Further, the terminal portion 19b and the light receiving element 12 are electrically connected using wire X by wire bonding. Thereby, the light receiving element 12 and the external electrodes 16a and 16b are electrically connected.
  • the sealing resin 15 is made of a transparent resin and seals the light receiving element 12 mounted on the substrate 11. As a result, the light receiving element 12 is embedded in the plug body 13.
  • the ferrule 17 is a resin member having a rectangular parallelepiped shape.
  • the ferrule 17 fixes the optical fiber 50 and the plug main body 13 with the core wire 54 and the light receiving element 12 facing each other.
  • the ferrule 17 is provided with a recess A and a hole H.
  • the recess A is formed by the depression of the side surface of the ferrule 17 on the negative direction side in the x-axis direction. As a result, the sealing resin 15 is fitted into the recess A, and the plug body 13 is fixed to the ferrule 17.
  • the hole H is a cylindrical cavity, and is provided so as to extend from the side surface on the positive direction side in the x-axis direction of the ferrule 17 to the negative direction side in the x-axis direction and penetrate into the recess A. Yes. Therefore, when the core wire 54 is inserted into the hole H from the positive direction side in the x-axis direction, the light receiving element 12 and the optical fiber 50 face each other and are optically connected.
  • the metal member 18 is provided so as to cover the light receiving element 12 from the positive side in the z-axis direction.
  • the metal member 18 covers the positive-side surface in the z-axis direction, the positive-side surface in the y-axis direction, and the negative-side surface in the y-axis direction of the plug body 13 and the ferrule 17. Further, as shown in FIGS. 2 and 3, the metal member 18 is provided with recesses 80, 81, 82, 83. As shown in FIG. 2, the concave portion 80 and the concave portion 81 are provided by the depression of the side surface on the positive direction side in the y-axis direction of the metal member 18.
  • the recess 80 is provided on the positive side in the x-axis direction with respect to the recess 81. As shown in FIG. 3, the recess 82 and the recess 83 are provided by the depression of the side surface on the negative direction side in the y-axis direction of the metal member 18. The recess 82 is provided on the positive side in the x-axis direction with respect to the recess 83.
  • the electric circuit unit 30 is mounted on the mounting surface 43 of the circuit board 40 on the negative direction side of the receptacle 20 in the x-axis direction, and processes a signal transmitted by the plug 10.
  • the electric circuit unit 30 includes a circuit element 31, an IC 32, a metal cap 33, and a resin unit 35.
  • the circuit element 31 is a chip-type electronic component that is mounted on the mounting surface 43 of the circuit board 40.
  • the IC 32 is a semiconductor integrated circuit including an amplifier circuit.
  • the amplifier circuit in the IC 32 is a circuit for amplifying an electric signal output from the light receiving element 12, and is electrically connected to spring terminals 23a and 23b described later.
  • the circuit element 31 and the IC 32 are sealed with a resin portion 35.
  • the metal cap 33 is a cap that covers the circuit element 31 and the IC 32 sealed by the resin portion 35.
  • the metal cap 33 covers the resin part 35 from the positive direction side in the z-axis direction, the positive direction side in the y-axis direction, and the negative direction side in the y-axis direction.
  • FIG. 5 is an exploded perspective view of the receptacle 20.
  • FIG. 6 is a view of the receptacle 20 as seen from the back side.
  • the receptacle 20 includes a receptacle body 21, spring terminals 23 a and 23 b, an insulating portion 25, a fixing member 29, and holding members 70 to 73, and is mounted on the circuit board 40.
  • the plug 10 is attached to the receptacle 20 from the positive direction side (upward) in the z-axis direction.
  • the receptacle body 21, the fixing member 29, and the holding members 70 to 73 are configured by bending a single metal plate. More specifically, the receptacle body 21, the fixing member 29, and the holding members 70 to 73 are configured by bending a single rectangular metal plate. More specifically, the positive side of the metal plate in the x-axis direction, the central part of the positive side in the y-axis direction, and the central part of the negative side in the y-axis direction are in the negative direction in the z-axis direction.
  • the receptacle body 21, the fixing member 29, and the holding members 70 to 73 are configured by being bent toward the side.
  • the receptacle body 21 is a housing in which the plug 10 is mounted from the positive direction side in the z-axis direction.
  • the receptacle body 21 is provided with an opening O that is rectangular when viewed from the positive direction side in the z-axis direction and in which the plug 10 is mounted from the positive direction side (upward) in the z-axis direction.
  • the receptacle body 21 has a shape (that is, a square shape) surrounding the plug 10 when viewed from the positive direction side (upward) in the z-axis direction. More specifically, the opening O is surrounded by sides k, l, m, and n.
  • the side on the negative direction side in the x-axis direction is the side k
  • the side on the positive direction side in the x-axis direction is the side l
  • the side on the positive direction side in the y-axis direction is the side m
  • the side on the negative direction side in the y-axis direction is the side n.
  • Side k and side l, side m and side n are parallel to each other.
  • notches A and B are provided at both ends of the side m so as to be recessed from the opening O toward the positive side (outer side) in the y-axis direction.
  • the notch A is located on the positive side in the x-axis direction from the notch B.
  • the notches A and B each have a trapezoidal shape in which the width in the x-axis direction becomes narrower from the side m toward the positive side in the y-axis direction.
  • notches C and D are provided at both ends of the side n so as to be recessed from the opening O toward the negative side (outer side) in the y-axis direction.
  • the notch C is located on the positive side in the x-axis direction with respect to the notch D.
  • Each of the cutouts C and D has a trapezoidal shape in which the width in the x-axis direction becomes narrower from the side n toward the negative direction side in the y-axis direction (moving away).
  • the fixing member 29 is connected to the end on the negative side in the x-axis direction on the positive side in the y-axis direction and the negative side in the y-axis direction of the receptacle body 21. Yes.
  • the fixing member 29 extends in the z-axis direction and is press-fitted into the hole 41 of the circuit board 40 as shown in FIGS. 1 and 2.
  • the receptacle 20 is mounted on the circuit board 40.
  • the fixing member 29 is connected to the ground conductor in the fixed substrate 40.
  • the receptacle body 21 is kept at the ground potential.
  • the holding members 70 and 71 are spring members that are positioned at both ends of the side m and fix the plug 10.
  • the holding member 70 is located on the positive side in the x-axis direction with respect to the holding member 71.
  • the end portions on the negative direction side in the y-axis direction of the holding members 70 and 71 are referred to as end portions 70a and 71a
  • the end portions on the positive direction side in the y-axis direction are referred to as end portions 70b and 71b.
  • the end portions 70a and 71a are located in the opening O when viewed from the positive direction side in the z-axis direction.
  • the end portion 70a is located in the notch A
  • the end portion 71a is located in the notch B.
  • the end portions 70b and 71b are connected to the receptacle body 21. Accordingly, the holding members 70 and 71 are U-shaped when viewed from the x-axis direction. The widths of the end portions 70a and 71a in the x-axis direction are narrower than the widths of the end portions 70b and 71b in the x-axis direction. That is, the holding members 70 and 71 have a trapezoidal shape whose width becomes narrower toward the tip.
  • the holding members 72 and 73 are spring members that are positioned at both ends of the side n and fix the plug 10.
  • the holding member 72 is located on the positive side in the x-axis direction with respect to the holding member 73.
  • the ends of the holding members 72 and 73 on the positive side in the y-axis direction are end portions 72a and 73a
  • the ends on the negative direction side in the y-axis direction are end portions 72b and 73b (not shown).
  • the ends 72a and 73a are located in the opening O when viewed from the positive direction side in the z-axis direction.
  • the end portion 72 a is located in the notch C
  • the end portion 73 a is located in the notch D.
  • the end portions 72b and 73b are connected to the receptacle body 21.
  • the holding members 72 and 73 are U-shaped when viewed from the x-axis direction.
  • the widths of the end portions 72a and 73a in the x-axis direction are narrower than the widths of the end portions 72b and 73b in the x-axis direction. That is, the holding members 72 and 73 have a trapezoidal shape whose width becomes narrower toward the tip.
  • the spring terminals 23 a and 23 b are signal external electrodes that are electrically connected to the plug 10. Below, it demonstrates in detail about the spring terminals 23a and 23b.
  • the spring terminal 23a includes a contact portion 90a, a spring portion 91a, and a fixing portion 92a.
  • the spring portion 91a is a U-shaped leaf spring that connects the contact portion 90a and the fixed portion 92a and has a folded portion when viewed from the positive direction side (upward) in the z-axis direction.
  • the spring portion 91a is located on the negative side in the x-axis direction with respect to the holding member 71, and has spring members 93a and 94a and a folded portion 95a as shown in FIG.
  • the spring members 93a and 94a are made of leaf springs that extend along the side k and are bent in the same direction.
  • the spring members 93a and 94a have a " ⁇ " shape that is bent toward the negative side in the x-axis direction near the middle point in the y-axis direction, and are viewed from the positive direction side in the z-axis direction. Sometimes, as it goes to the positive direction side in the y-axis direction, it bends to the negative direction side in the x-axis direction.
  • the spring member 93a is located closer to the positive side in the x-axis direction than the spring member 94a.
  • the spring member 93a faces the holding member 71 on the negative side in the x-axis direction of the holding member 71 when viewed from the positive direction side (upward) in the z-axis direction, and moves away from the holding member 71. Bent in the direction.
  • the folded portion 95a has an arc shape, and connects the end of the spring member 93a on the positive direction side in the y-axis direction and the end of the spring member 94a on the positive direction side in the y-axis direction.
  • the spring terminal 23b includes a contact portion 90b, a spring portion 91b, and a fixing portion 92b.
  • the spring portion 91b is a U-shaped leaf spring that connects the contact portion 90b and the fixed portion 92b and has a folded portion when viewed from the positive direction side in the z-axis direction.
  • the spring portion 91b is located on the negative side in the x-axis direction with respect to the holding member 73, and has spring members 93b and 94b and a folded portion 95b as shown in FIG.
  • the spring members 93b and 94b are made of leaf springs that extend along the side k and are bent in the same direction.
  • the spring members 93b and 94b have a " ⁇ " shape that is bent toward the negative side in the x-axis direction near the middle point in the y-axis direction, and are viewed from the positive direction side in the z-axis direction. Sometimes, as it goes to the negative direction side in the y-axis direction, it bends to the negative direction side in the x-axis direction.
  • the spring member 93b is located closer to the positive side in the x-axis direction than the spring member 94b. Accordingly, the spring member 93 b faces the holding member 73 on the negative side of the holding member 73 in the x-axis direction and is bent in a direction away from the holding member 73.
  • the folded portion 95b has an arc shape, and connects the end of the spring member 93b on the negative direction side in the y-axis direction and the end of the spring member 94b on the negative direction side in the y-axis direction.
  • the contact portions 90a and 90b are end portions of the end portions of the spring terminals 23a and 23b that are located on the positive direction side in the x-axis direction (the one to which the folded portion 95 is not connected).
  • the contact portion 90a is connected to the end of the spring member 93a on the negative side in the y-axis direction and on the positive side in the z-axis direction.
  • the contact portion 90b is connected to the end of the spring member 93b on the positive side in the y-axis direction and on the positive direction side in the z-axis direction.
  • the contact portions 90 a and 90 b are located in the opening O when viewed from the positive direction side (upward) in the z-axis direction.
  • the contact portions 90a and 90b are bent so as to form an inverted U shape when viewed from the positive direction side in the y-axis direction (the direction that is horizontal and orthogonal to the optical fiber 50),
  • the portions 91a and 91b are drawn to the positive direction side in the x-axis direction.
  • the contact portions 90a and 90b are in contact with the side surface of the plug 10 on the negative side in the x-axis direction. More specifically, the contact portions 90a and 90b are in contact with the external electrodes 16a and 16b of the plug 10, respectively.
  • the contact portions 90a and 90b are inclined so that the angle formed by the end portions on the positive direction side in the x-axis direction of the spring portions 91a and 91b is about 45 °.
  • the fixing portions 92a and 92b are end portions of the end portions of the spring terminals 23a and 23b that are located on the negative direction side in the x-axis direction (the side to which the folded portion 95 is not connected), and are fixed in the x-axis direction. It extends toward the negative direction.
  • the fixed portions 92a and 92b are located outside the opening O with respect to the side k when viewed from the positive direction side (upward) in the z-axis direction.
  • the fixed portion 92a is connected to the end of the spring member 94a on the negative direction side in the y-axis direction and on the negative direction side in the z-axis direction.
  • the fixed portion 92b is connected to the end of the spring member 94b on the positive side in the y-axis direction and on the negative direction side in the z-axis direction.
  • the fixing portions 92a and 92b are connected to lands (not shown) of the circuit board 40 when the receptacle 20 is mounted, and function as external terminals.
  • the spring terminals 23a and 23b configured as described above have a U shape having folded portions 95a and 95b when viewed from the positive side in the z-axis direction.
  • the spring terminal 23a has a U-shaped folded portion 95a facing the positive direction side in the y-axis direction, and the tip of the folded portion 95a is side m when viewed from the positive direction side (upward) in the z-axis direction. It is located on the positive side in the y-axis direction (outside with respect to the opening O) with respect to (side perpendicular to the side k).
  • the U-shaped folded portion 95b faces the negative direction side in the y-axis direction, and the tip of the folded portion 95b is in the negative direction in the y-axis direction from the side n (side perpendicular to the side k). It is located on the side (outside with respect to the opening O).
  • the spring terminal 23a and the spring terminal 23b are axisymmetric with respect to the x-axis (the direction in which the optical fiber 50 extends) when viewed from the positive direction side (upward) in the z-axis direction. ing.
  • the spring terminals 23a and 23b are configured such that the contact portions 90a and 90b are in contact with the external electrodes 16a and 16b, and the fixing portions 92a and 92b are connected to the lands of the circuit board 40. It functions as a terminal that relays signal transmission between them.
  • the insulating portion 25 has a rectangular parallelepiped shape and is made of resin.
  • the insulating portion 25 is integrally formed with the spring terminals 23a and 23b.
  • the spring terminals 23 a and 23 b are fixed to the receptacle body 21 by the insulating portion 25 so as not to be electrically connected to the receptacle body 21.
  • the spring portion 91a and the spring portion 91b are drawn out from the side surface on the positive side in the y-axis direction and the side surface on the negative direction side in the y-axis direction of the insulating portion 25. 92a and 92b are pulled out.
  • the insulating portion 25 is fixed to the receptacle body 21 on the upper surface 28 of the insulating portion 25.
  • the plug 10 is mounted in the opening O from the positive side in the z-axis direction.
  • the holding members 70 to 73 engage with the recesses 80 to 83, respectively.
  • the spring terminals 23a and 23b and the external electrodes 16a and 16b are in contact with each other, and the spring terminals 23a and 23b are in pressure contact with the external electrodes 16a and 16b.
  • the plug 10 is pushed to the positive side in the x-axis direction by the spring terminals 23a and 23b.
  • the plug 10 is fixed to the receptacle 20.
  • FIG. 7 is a schematic configuration diagram of a transmission / reception system 100 in which the connector 1 is used.
  • a receiving connector 1a and a transmitting connector 1b are provided at both ends of the optical fiber 50, respectively.
  • the receiving connector 1a includes a receiving circuit board 40a and a photodiode 12a.
  • the transmission connector 1b includes a transmission circuit board 40b and a VCSEL 12b. As a result, a signal is transmitted from the transmission connector 1b to the reception connector 1a through the optical fiber 50.
  • a high S / N ratio can be obtained. More specifically, in the connector 1, the contact portions 90a and 90b are in pressure contact with the external electrodes 16a and 16b, respectively. Therefore, the contact area between the contact portions 90a and 90b and the external electrodes 16a and 16b is larger than the contact area in the case where they are not in pressure contact with each other. The resistance value is also lower than the resistance value when they are not in pressure contact. Thereby, the current value of the electrical signal transmitted from the plug 10 to the electrical circuit unit 30 via the receptacle 20 is increased. Therefore, according to the connector 1, a high SN ratio can be obtained.
  • FIG. 8A is a diagram used for explaining the fitting force when the plug 10 and the receptacle 20 are fitted at the four corners of the plug 10.
  • FIG. 8B is a diagram used for explaining the fitting force when the plug 210 and the receptacle 220 are fitted at other than the four corners of the plug 210.
  • FIG. 8A when the plug 10 and the receptacle 20 are fitted at the four corners of the plug 10, and as shown in FIG. 8B, the plug 210 and the receptacle 220 are plugged.
  • the optical fibers 50 and 250 are fitted in two places other than the two ends on the negative side in the x-axis direction of 210 and the two ends other than the end on the positive direction side in the x-axis direction of the plug 210.
  • the ease of detachment of the plugs 10 and 210 when pulled to the positive side in the z-axis direction will be compared.
  • the fulcrum is the fulcrum S at the end of the plugs 10 and 210 on the negative side in the x-axis direction.
  • F1 is a force that pulls the optical fibers 50 and 250 toward the positive direction in the z-axis direction
  • F2 is a force that is applied to the plugs 10 and 210 by fitting.
  • L1 is the length from the point where the force is applied in the optical fibers 50 and 250 to the fulcrum S
  • L2 is the plug 10 and the receptacle 20 fitted at the positive end of the receptacle 20 in the x-axis direction. It is the length from the point to the fulcrum S.
  • L3 is the length from the point where the plug 210 and the receptacle 220 are fitted to the fulcrum S except for the negative end of the receptacle 220 in the x-axis direction.
  • M1 is a moment of force acting clockwise around the fulcrum S
  • M2 is a moment of force acting clockwise around the fulcrum S.
  • the holding members 70 to 73 are located at the four corners of the opening O of the receptacle 20 as shown in FIGS. Therefore, when the spring terminals 23a and 23b are arranged so as to form a U shape extending in the y-axis direction when viewed from the z-axis direction, the holding members 71 and 73 and the spring terminals 23a and 23b are in contact with each other. End up.
  • the spring terminals 23a and 23b so as to form an inverted U shape when viewed from the y-axis direction.
  • the length of the receptacle 20 extending in the z-axis direction becomes long, and the receptacle 20 cannot be reduced in height.
  • the spring terminals 23a and 23b have a configuration described below. More specifically, the spring members 93a and 93b have a “ ⁇ ” shape that is bent toward the negative side in the x-axis direction near the middle point in the y-axis direction. That is, the spring member 93a is bent toward the negative direction side in the x-axis direction as it goes to the positive direction side in the y-axis direction when viewed from the positive direction side in the z-axis direction. Similarly, when viewed from the positive direction side in the z-axis direction, the spring member 93b is bent toward the negative direction side in the x-axis direction as it goes to the negative direction side in the y-axis direction.
  • the spring members 93a and 93b facing the holding members 71 and 73 closest to the spring terminals 23a and 23b are moved away from the holding members 71 and 73. bent.
  • the contact of the spring members 93a and 93b with the holding members 71 and 73 is suppressed, and the height of the receptacle 20 is reduced.
  • the tips of the U-shaped folded portions of the spring terminals 23a and 23b are located on the positive side in the y-axis direction or on the negative direction side in the y-axis direction from the side m or the side n, respectively. Therefore, the length of the spring portions 91a and 91b can be made sufficiently long, and the spring terminals 23a and 23b are not easily plastically deformed even if they are greatly displaced. That is, high spring properties can be obtained at the spring terminals 23a and 23b.
  • the notches A to D have trapezoidal shapes in which the width in the x-axis direction becomes narrower as the distance from the sides m and n increases when viewed from the positive direction side in the z-axis direction. There is no.
  • the area of the receptacle body 21 is larger than in the case where the notches A to D are rectangular, so that the strength of the receptacle body 21 is increased.
  • the width in the x-axis direction at the end portions 70a, 71a, 72a, 73a of the holding members 70 to 73 is shorter than the width in the x-axis direction at the end portions 70b, 71b, 72b, 73b. Accordingly, even if the areas of the notches A to D are small, the holding members 70 to 73 can be fitted into the notches A to D.
  • the holding members 70 to 73 have hook shapes starting from the end portions 70b, 71b, 72b, 73b connected to the receptacle body 21. Therefore, the holding members 70 to 73 are long in the length of the portion functioning as a spring, and thus are difficult to be plastically deformed even if they are largely displaced. That is, a high spring property can be obtained.
  • the end portions 70a to 73a come into contact with the receptacle main body 21 if they are to be largely displaced. Therefore, the holding members 70 to 73 are not displaced so much as to be plastically deformed.
  • the plug 10 can be fixed to the receptacle body 21 by pushing the plug 10 toward the positive side in the x-axis direction by the contact portions 90a and 90b.
  • the tips of the contact portions 90a and 90b are inclined so that the angle formed by the spring members 93a and 93b is about 45 °, respectively. Therefore, the contact portions 90a and 90b can mechanically guide the plug 10.
  • the contact portions 90a and 90b are displaced in the x-axis direction when the spring members 93a and 93b are bent.
  • the insulating portion 25 is provided on the negative side of the contact portions 90 a and 90 b in the x-axis direction. For this reason, the contact portions 90a and 90b come into contact with the insulating portion 25 if they are to be largely displaced. Therefore, the contact portions 90a and 90b are not displaced so much as to be plastically deformed.
  • the fixing member 29 is press-fitted into the hole 41 as shown in FIGS. 1 and 2. Therefore, when the plug 10 is inserted into and removed from the receptacle 20, even if the receptacle 20 is stressed in the positive z-axis direction by pulling up the plug 10 in the positive z-axis direction, the receptacle 20 Since it is securely mounted on the circuit board 40, it cannot be detached from the circuit board 40.
  • the receptacle body 21 when viewed from the positive side (upper side) in the z-axis direction, the receptacle body 21 has a shape surrounding the plug 10, so that the plug 10 is difficult to be removed from the receptacle 20, and the plug The fitting force between 10 and the receptacle 20 can be increased.
  • FIG. 9 is a view showing a tip portion of a tweezers-type tool E used when the plug 10 is inserted and removed from the receptacle 20.
  • the plug 10 is removed from the receptacle 20 by fitting the L-shaped tool E shown in FIG. 9 into the recesses U and V (see FIGS. 2 and 3) of the plug 10 from the notches M and N. Insert and remove.
  • the plug 10 is sandwiched by the tool E and is inserted from the positive side of the receptacle body 21 in the z-axis direction.
  • the metal cap 33, the metal member 18, and the receptacle body 21 are connected to the ground, they are at the same potential. As a result, the entire connector 1 is shielded from external noise, and the connector 1 can exhibit a shielding effect. Due to the shielding effect, the ESD resistance (electrostatic discharge) and the EMC resistance (electromagnetic compatibility) of the circuit element 31 can be improved. In addition, the EMC resistance of the external electrical interface can be improved.
  • the metal member 18 and the receptacle body 21 are made of metal and are connected to a ground conductor (not shown) of the circuit board 40, respectively. Therefore, a large current due to static electricity is guided to the ground through the metal member 18, the receptacle body 21 and the ground conductor of the circuit board 40.
  • the plug 10 is in contact with the receptacle 20 through metal holding members 70 to 73 as shown in FIGS. Therefore, wear hardly occurs between the plug 10 and the holding members 70 to 73, and uneven contact due to variations in the shapes of the plug 10 and the holding members 70 to 73 can be prevented.
  • the click feeling at the time of fitting is strong, and the fact that the fitting has been achieved can be realized with sound and touch. Can do.
  • the connector 1 configured as described above is not limited to that shown in the embodiment. Therefore, the connector 1 can be changed within the scope of the gist.
  • the photoelectric conversion element of the receptacle body 21 in the present embodiment is the light receiving element 12, it may be a light emitting element.
  • the light emitting element converts the electrical signal output from the electrical circuit unit 30 into an optical signal and outputs the optical signal to the optical fiber 50.
  • the IC 32 of the electric circuit unit 30 functions as a drive circuit.
  • the IC 32 is electrically connected to the spring terminals 23a and 23b and generates an electric signal to be output to the light emitting element.
  • the IC 32 outputs a current value corresponding to the light amount of the light emitting element. Therefore, when the light amount of the light emitting element is small, the IC 32 outputs an electrical signal having a weak current value. Therefore, there is a problem that the S / N ratio is lowered when noise is applied to the electrical signal. Even in this case, it is effective to press the plug 10 and the receptacle 20 in pressure contact.
  • the external electrodes 16a and 16b may be spring terminals, and the spring terminals 23a and 23b provided in the receptacle 20 may be replaced with plate-like external electrodes.
  • the external electrodes 16a and 16b are U-shaped leaf springs when viewed from the y-axis direction (the direction that is horizontal and orthogonal to the optical fiber), and are in contact with the receptacle 20. .
  • FIG. 10 is a schematic configuration diagram 100a of a transmission / reception system in which the connector 1 according to another embodiment is used.
  • a SERDES device 99 may be provided in the receiving connector 1a and the transmitting connector 1b.
  • the SERDES device 99 is mounted on the circuit board 40.
  • the SERDES device 99 converts a serial signal into a parallel signal, and converts the parallel signal into a serial signal. As a result, the distance between the drive circuit and the SERDES circuit is narrowed, so that the optical transmission characteristics are improved.
  • the metal cap 33 and the receptacle body 21 may be integrated.
  • the ESD resistance and EMC resistance of the entire connector 1 can be improved.
  • the cost can be reduced by reducing the number of parts, and the manufacturing time can be shortened by reducing the number of man-hours at the time of manufacturing.
  • the receptacle 20 In the receptacle 20, four holding members are provided, but five or more holding members may be provided. In this case, since the plug 10 and the receptacle 20 are fitted at a plurality of locations, the fitting force can be further increased. Moreover, it is necessary to provide a plurality of notches in the receptacle body 21 so that the holding member and the receptacle body 21 do not come into contact with each other.
  • two spring terminals are provided, but only one spring terminal may be provided. This is because even a single spring terminal can be connected to the external electrodes 16a and 16b and the land (not shown) of the circuit board 40 if it has a contact portion and a fixed portion at both ends thereof. .
  • optical fibers 50 and light receiving elements 12 mounted on the plug 10. Thereby, the transmission capacity can be increased. Moreover, the optical fiber 50 and the light receiving element 12 may be arrayed.
  • the optical fiber 50 may be not only a quartz fiber but also an organic optical waveguide or POF (Plastic Optical Fiber). These optical transmission paths can be selected according to the application.
  • metal member 18 and the metal cap 33 may not be made of metal.
  • the present invention is useful for connectors, and is particularly excellent in that a connector capable of obtaining a high S / N ratio can be provided.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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  • Semiconductor Lasers (AREA)

Abstract

Provided is a connector wherein a high SN ratio can be obtained. A plug (10) that is provided at one end of an optical fiber (50) is attached to a receptacle (20) from above. The receptacle (20) and an electrical circuit section (30) are mounted on a circuit board (40). A light receiving element converts optical signals outputted from the optical fiber (50) into electrical signals. External electrodes are electrically connected to the light receiving element. A receptacle main body (21) is provided with an opening (O) having the plug (10) attached therein. Spring terminals (23a, 23b) are in contact with the external electrodes when the plug (10) is attached to the inside of the opening (O). An amplifying circuit is electrically connected to the spring terminals (23a, 23b), and amplifies the electrical signals outputted from the light receiving element. The spring terminals (23a, 23b) are in contact with the external electrodes with pressure.

Description

コネクタconnector
 本発明は、コネクタに関し、特に、光ファイバにより信号を伝送する際に用いられるコネクタに関する。 The present invention relates to a connector, and more particularly to a connector used when transmitting a signal through an optical fiber.
 従来のコネクタとしては、例えば、特許文献1に記載のコネクタが知られている。図11は、特許文献1に記載のコネクタ500の外観斜視図である。 As a conventional connector, for example, a connector described in Patent Document 1 is known. FIG. 11 is an external perspective view of the connector 500 described in Patent Document 1. FIG.
 コネクタ500は、図11に示すように、プラグ側コネクタ520、レセプタクル側コネクタ540、電気配線550及びICドライバ560によって構成されている。プラグ側コネクタ520は、光ファイバ502の一端に設けられ、レセプタクル側コネクタ540に着脱可能に構成されている。プラグ側コネクタ520には、光電変換素子が含まれている。レセプタクル側コネクタ540は、基板503に実装されている。ICドライバ560は、光ファイバ502を伝送される信号を処理する回路である。電気配線550は、レセプタクル側コネクタ540とICドライバ560とを電気的に接続している。 The connector 500 includes a plug-side connector 520, a receptacle-side connector 540, electrical wiring 550, and an IC driver 560, as shown in FIG. The plug-side connector 520 is provided at one end of the optical fiber 502 and is configured to be detachable from the receptacle-side connector 540. The plug-side connector 520 includes a photoelectric conversion element. Receptacle side connector 540 is mounted on substrate 503. The IC driver 560 is a circuit that processes a signal transmitted through the optical fiber 502. The electrical wiring 550 electrically connects the receptacle-side connector 540 and the IC driver 560.
 ところで、特許文献1に記載のコネクタ500は、高いSN比を得ることが困難であるという問題を有している。より詳細には、コネクタ500では、レセプタクル側コネクタ540外にICドライバ560が設けられている。そのため、レセプタクル側コネクタ540とICドライバ560とを接続するための電気配線550が設けられている。ここで、フォトダイオードなどの光電変換素子は、非常に微弱な電流値を有する電気信号しか出力できない。そのため、電気配線550を流れる電気信号の電流値も微弱である。このような微弱な電流値しか有していない電気信号にノイズが混入すると、SN比が大きく低下してしまう。以上のように、特許文献1に記載のコネクタ500では、レセプタクル側コネクタ540とICドライバ560とが離れているため、高いSN比を得ることが困難であった。 Incidentally, the connector 500 described in Patent Document 1 has a problem that it is difficult to obtain a high SN ratio. More specifically, in the connector 500, an IC driver 560 is provided outside the receptacle-side connector 540. Therefore, an electrical wiring 550 for connecting the receptacle-side connector 540 and the IC driver 560 is provided. Here, a photoelectric conversion element such as a photodiode can output only an electric signal having a very weak current value. Therefore, the current value of the electric signal flowing through the electric wiring 550 is also weak. If noise is mixed in such an electric signal having only a weak current value, the SN ratio is greatly reduced. As described above, in the connector 500 described in Patent Document 1, since the receptacle-side connector 540 and the IC driver 560 are separated from each other, it is difficult to obtain a high SN ratio.
特開2006-30868号公報JP 2006-30868 A
 そこで、本発明の目的は、高いSN比を得ることができるコネクタを提供することである。 Therefore, an object of the present invention is to provide a connector capable of obtaining a high S / N ratio.
 本発明の一形態に係るコネクタは、光ファイバの一端に設けられるプラグと、前記プラグが上方から装着されるレセプタクルと、電気回路部と、前記電気回路部及び前記レセプタクルが実装される回路基板と、を備えており、前記プラグは、プラグ本体と、前記プラグ本体に設けられ、前記光ファイバから出力されてきた光信号を電気信号に変換する受光素子と、前記プラグ本体の側面に設けられ、前記受光素子と電気的に接続されている第1の外部電極と、を含んでおり、前記レセプタクルは、前記プラグが上方から装着される開口が設けられているレセプタクル本体と、前記プラグが前記開口内に装着された際に、前記第1の外部電極と接触する第2の外部電極と、を含んでおり、前記電気回路部は、前記第2の外部電極と電気的に接続されており、かつ、前記受光素子から出力されてくる電気信号を増幅する増幅回路を、含んでおり、前記第1の外部電極又は前記第2の外部電極のいずれか一方は、該第1の外部電極又は該第2の外部電極のいずれか他方に対して圧接するばね端子であること、を特徴とする。 A connector according to an aspect of the present invention includes a plug provided at one end of an optical fiber, a receptacle to which the plug is mounted from above, an electric circuit unit, and a circuit board on which the electric circuit unit and the receptacle are mounted. The plug is provided on a side surface of the plug body, a plug body, a light receiving element that is provided in the plug body and converts an optical signal output from the optical fiber into an electrical signal, A first external electrode electrically connected to the light receiving element, and the receptacle includes a receptacle body provided with an opening in which the plug is mounted from above, and the plug is the opening. A second external electrode that comes into contact with the first external electrode when mounted inside, wherein the electrical circuit section is in electrical contact with the second external electrode. And an amplifying circuit for amplifying an electric signal output from the light receiving element, wherein either the first external electrode or the second external electrode is the first external electrode. It is a spring terminal pressed against either the external electrode or the second external electrode.
 本発明によれば、高いSN比を得ることができるコネクタを提供することができる。 According to the present invention, a connector capable of obtaining a high S / N ratio can be provided.
本発明の一実施形態に係るコネクタの外観斜視図である。1 is an external perspective view of a connector according to an embodiment of the present invention. コネクタからプラグを分離した外観斜視図である。It is the external appearance perspective view which isolate | separated the plug from the connector. プラグの分解斜視図である。It is a disassembled perspective view of a plug. レセプタクル本体及び電気回路部が回路基板に実装される様子を表した図である。It is a figure showing a mode that a receptacle main body and an electric circuit part were mounted in a circuit board. レセプタクルの分解斜視図である。It is a disassembled perspective view of a receptacle. レセプタクルを裏面から見た図である。It is the figure which looked at the receptacle from the back. コネクタが用いられた送受信システムの概略構成図である。It is a schematic block diagram of the transmission / reception system using the connector. 図8(a)は、プラグとレセプタクルとがプラグの4隅で嵌合されている場合の嵌合力の説明に用いる図である。図8(b)は、プラグとレセプタクルとがプラグの4隅以外で嵌合されている場合の嵌合力の説明に用いる図である。FIG. 8A is a diagram used for explaining the fitting force when the plug and the receptacle are fitted at the four corners of the plug. FIG. 8B is a diagram used for explaining the fitting force when the plug and the receptacle are fitted at other than the four corners of the plug. プラグをレセプタクルから挿抜する際に用いる道具の先端部分を表した図である。It is a figure showing the front-end | tip part of the tool used when inserting / extracting a plug from a receptacle. その他の実施形態に係るコネクタが用いられた送受信システムの概略構成図である。It is a schematic block diagram of the transmission / reception system using the connector which concerns on other embodiment. 特許文献1に記載のコネクタの外観斜視図である。1 is an external perspective view of a connector described in Patent Document 1. FIG.
 以下に、本発明の一実施形態に係るコネクタについて図面を参照しながら説明する。 Hereinafter, a connector according to an embodiment of the present invention will be described with reference to the drawings.
(コネクタの概略構成)
 まず、本発明の一実施形態に係るコネクタの概略構成について説明する。図1は、本発明の一実施形態に係るコネクタ1の外観斜視図である。図2は、コネクタ1からプラグ10を分離した外観斜視図である。図3は、プラグ10の分解斜視図である。図4は、レセプタクル本体21及び電気回路部30が回路基板40に実装される様子を表した図である。
(Schematic configuration of the connector)
First, a schematic configuration of a connector according to an embodiment of the present invention will be described. FIG. 1 is an external perspective view of a connector 1 according to an embodiment of the present invention. FIG. 2 is an external perspective view in which the plug 10 is separated from the connector 1. FIG. 3 is an exploded perspective view of the plug 10. FIG. 4 is a diagram illustrating a state in which the receptacle body 21 and the electric circuit unit 30 are mounted on the circuit board 40.
 図1及び図2に示すように、コネクタ1は、プラグ10、レセプタクル20、電気回路部30及び回路基板40を備えている。プラグ10は、光ファイバ50の一端に設けられており、光信号を電気信号に変換、又は、電気信号を光信号に変換する。以下では、光ファイバ50が延在している方向をx軸方向と定義し、上下方向をz軸方向と定義し、x軸方向及びz軸方向に直交する方向をy軸方向と定義する。x軸方向、y軸方向及びz軸方向は、互いに直交している。 1 and 2, the connector 1 includes a plug 10, a receptacle 20, an electric circuit unit 30, and a circuit board 40. The plug 10 is provided at one end of the optical fiber 50 and converts an optical signal into an electric signal or converts an electric signal into an optical signal. Hereinafter, the direction in which the optical fiber 50 extends is defined as the x-axis direction, the vertical direction is defined as the z-axis direction, and the direction orthogonal to the x-axis direction and the z-axis direction is defined as the y-axis direction. The x-axis direction, the y-axis direction, and the z-axis direction are orthogonal to each other.
 回路基板40は、表面及び内部に電気回路を有しており、図1及び図2に示すように、xy平面に平行な実装面43を有している。また、回路基板40の実装面43には、孔41が設けられている。孔41は、実装面43において、y軸方向の正方向側の辺近傍及びy軸方向の負方向側の辺近傍に設けられ、互いに対向している。回路基板40には、レセプタクル20及び電気回路部30がx軸方向の正方向側から負方向側に向かってこの順に並ぶように実装されている。 The circuit board 40 has an electric circuit on its surface and inside, and has a mounting surface 43 parallel to the xy plane, as shown in FIGS. Further, a hole 41 is provided in the mounting surface 43 of the circuit board 40. The holes 41 are provided near the side on the positive side in the y-axis direction and near the side on the negative direction side in the y-axis direction on the mounting surface 43 and face each other. On the circuit board 40, the receptacle 20 and the electric circuit unit 30 are mounted so as to be arranged in this order from the positive direction side to the negative direction side in the x-axis direction.
 光ファイバ50は、被覆52及び芯線54により構成されている。芯線54は、ガラス又は樹脂からなるコア及びクラッドにより構成されている。被覆52は、UV、フッ素、シリコーン樹脂、ポリカーボネイト、アクリルのいずれか、もしくはこれらの混合物であり、芯線54を被覆している。光ファイバ50のx軸方向の負方向側の端部では、図3に示すように、被覆52が除去されて芯線54が露出している。 The optical fiber 50 includes a coating 52 and a core wire 54. The core wire 54 includes a core and a clad made of glass or resin. The coating 52 is UV, fluorine, silicone resin, polycarbonate, acrylic, or a mixture thereof, and covers the core wire 54. At the end of the optical fiber 50 on the negative side in the x-axis direction, the coating 52 is removed and the core wire 54 is exposed as shown in FIG.
 プラグ10は、z軸方向の正方向側(上方)から見たときに長方形状をなしており、図3に示すように、プラグ本体13、フェルール17及び金属部材18を有している。 The plug 10 has a rectangular shape when viewed from the positive side (upper side) in the z-axis direction, and includes a plug body 13, a ferrule 17, and a metal member 18, as shown in FIG.
 プラグ本体13は、基板11、受光素子12、封止樹脂15、外部電極16a,16b、端子部19a,19b及びビアV1,V2によって構成されている。 The plug body 13 includes a substrate 11, a light receiving element 12, a sealing resin 15, external electrodes 16a and 16b, terminal portions 19a and 19b, and vias V1 and V2.
 基板11は、直方体状をなしている樹脂基板である。基板11のx軸方向の正方向側の側面上には、以下に説明するように、受光素子12が実装されている。受光素子12は、半導体素子からなっており、光ファイバ50から出力されてきた光信号を電気信号に変換する。 The substrate 11 is a resin substrate having a rectangular parallelepiped shape. A light receiving element 12 is mounted on the side surface of the substrate 11 on the positive side in the x-axis direction, as will be described below. The light receiving element 12 is made of a semiconductor element, and converts the optical signal output from the optical fiber 50 into an electrical signal.
 外部電極16a,16bは、基板11のx軸方向の負方向側の側面にy軸方向の正方向側から負方向側に向かってこの順に並ぶように設けられている。端子部19a,19bは、基板11のx軸方向の正方向側の側面にy軸方向の正方向側から負方向側に向かってこの順に並ぶように設けられている。ここで、外部電極16aと端子部19aとは、対向しており、ビアV1によって接続されている。外部電極16bと端子部19bとは、対向しており、ビアV2によって接続されている。また、端子部19a上には、受光素子12が実装されている。更に、端子部19bと受光素子12とは、ワイヤXを用いて、ワイヤボンディングによって電気的に接続されている。これによって、受光素子12と外部電極16a,16bとは、電気的に接続されている。 The external electrodes 16a and 16b are provided on the negative side surface in the x-axis direction of the substrate 11 so as to be arranged in this order from the positive direction side in the y-axis direction to the negative direction side. The terminal portions 19a and 19b are provided on the side surface of the substrate 11 on the positive direction side in the x-axis direction so as to be arranged in this order from the positive direction side in the y-axis direction to the negative direction side. Here, the external electrode 16a and the terminal portion 19a face each other and are connected by the via V1. The external electrode 16b and the terminal portion 19b face each other and are connected by a via V2. The light receiving element 12 is mounted on the terminal portion 19a. Further, the terminal portion 19b and the light receiving element 12 are electrically connected using wire X by wire bonding. Thereby, the light receiving element 12 and the external electrodes 16a and 16b are electrically connected.
 封止樹脂15は、透明な樹脂からなり、基板11に実装された受光素子12を封止している。これによって、受光素子12は、プラグ本体13に埋め込まれている。 The sealing resin 15 is made of a transparent resin and seals the light receiving element 12 mounted on the substrate 11. As a result, the light receiving element 12 is embedded in the plug body 13.
 フェルール17は、直方体状をなした樹脂部材である。フェルール17は、芯線54と受光素子12とを対向させた状態で光ファイバ50とプラグ本体13とを固定している。フェルール17には、凹部A及びホールHが設けられている。凹部Aは、フェルール17のx軸方向の負方向側の側面が窪むことによって形成されている。これにより、凹部Aには、封止樹脂15がはめ込まれ、プラグ本体13がフェルール17に固定される。ホールHは、円柱状をなした空洞であり、フェルール17のx軸方向の正方向側の側面からx軸方向の負方向側へと延在し、凹部Aへと貫通するように設けられている。そのため、芯線54がホールHにx軸方向の正方向側から挿入されることで、受光素子12と光ファイバ50とは、対向し、光学的に接続されている。 The ferrule 17 is a resin member having a rectangular parallelepiped shape. The ferrule 17 fixes the optical fiber 50 and the plug main body 13 with the core wire 54 and the light receiving element 12 facing each other. The ferrule 17 is provided with a recess A and a hole H. The recess A is formed by the depression of the side surface of the ferrule 17 on the negative direction side in the x-axis direction. As a result, the sealing resin 15 is fitted into the recess A, and the plug body 13 is fixed to the ferrule 17. The hole H is a cylindrical cavity, and is provided so as to extend from the side surface on the positive direction side in the x-axis direction of the ferrule 17 to the negative direction side in the x-axis direction and penetrate into the recess A. Yes. Therefore, when the core wire 54 is inserted into the hole H from the positive direction side in the x-axis direction, the light receiving element 12 and the optical fiber 50 face each other and are optically connected.
 金属部材18は、受光素子12をz軸方向の正方向側から覆うように設けられている。金属部材18は、プラグ本体13及びフェルール17のz軸方向の正方向側の面とy軸方向の正方向側の側面及びy軸方向の負方向側の側面とを覆っている。また、金属部材18には、図2及び図3に示すように、凹部80,81,82,83が設けられている。凹部80及び凹部81は、図2に示すように、金属部材18のy軸方向の正方向側の側面が窪んでいることにより設けられている。凹部80は、凹部81よりも、x軸方向の正方向側に設けられている。凹部82及び凹部83は、図3に示すように、金属部材18のy軸方向の負方向側の側面が窪んでいることにより設けられている。凹部82は、凹部83よりも、x軸方向の正方向側に設けられている。 The metal member 18 is provided so as to cover the light receiving element 12 from the positive side in the z-axis direction. The metal member 18 covers the positive-side surface in the z-axis direction, the positive-side surface in the y-axis direction, and the negative-side surface in the y-axis direction of the plug body 13 and the ferrule 17. Further, as shown in FIGS. 2 and 3, the metal member 18 is provided with recesses 80, 81, 82, 83. As shown in FIG. 2, the concave portion 80 and the concave portion 81 are provided by the depression of the side surface on the positive direction side in the y-axis direction of the metal member 18. The recess 80 is provided on the positive side in the x-axis direction with respect to the recess 81. As shown in FIG. 3, the recess 82 and the recess 83 are provided by the depression of the side surface on the negative direction side in the y-axis direction of the metal member 18. The recess 82 is provided on the positive side in the x-axis direction with respect to the recess 83.
 電気回路部30は、図4に示すように、レセプタクル20のx軸方向の負方向側において回路基板40の実装面43に実装され、プラグ10によって伝送される信号を処理する。電気回路部30は、回路素子31、IC32、金属キャップ33及び樹脂部35を有している。回路素子31は、回路基板40の実装面43に実装されているチップ型の電子部品である。IC32は、増幅回路を含んでいる半導体集積回路である。IC32内の増幅回路は、受光素子12から出力されてくる電気信号を増幅させるための回路であり、後述するばね端子23a,23bと電気的に接続されている。図4に示すように、回路素子31及びIC32は、樹脂部35によって封止されている。金属キャップ33は、樹脂部35によって封止された回路素子31及びIC32を覆うキャップである。金属キャップ33は、z軸方向の正方向側、y軸方向の正方向側及びy軸方向の負方向側から樹脂部35を覆っている。次に、レセプタクル20の構成について説明する。 As shown in FIG. 4, the electric circuit unit 30 is mounted on the mounting surface 43 of the circuit board 40 on the negative direction side of the receptacle 20 in the x-axis direction, and processes a signal transmitted by the plug 10. The electric circuit unit 30 includes a circuit element 31, an IC 32, a metal cap 33, and a resin unit 35. The circuit element 31 is a chip-type electronic component that is mounted on the mounting surface 43 of the circuit board 40. The IC 32 is a semiconductor integrated circuit including an amplifier circuit. The amplifier circuit in the IC 32 is a circuit for amplifying an electric signal output from the light receiving element 12, and is electrically connected to spring terminals 23a and 23b described later. As shown in FIG. 4, the circuit element 31 and the IC 32 are sealed with a resin portion 35. The metal cap 33 is a cap that covers the circuit element 31 and the IC 32 sealed by the resin portion 35. The metal cap 33 covers the resin part 35 from the positive direction side in the z-axis direction, the positive direction side in the y-axis direction, and the negative direction side in the y-axis direction. Next, the configuration of the receptacle 20 will be described.
(レセプタクルの構成)
 図5は、レセプタクル20の分解斜視図である。図6は、レセプタクル20を裏面から見た図である。レセプタクル20は、図5に示すように、レセプタクル本体21、ばね端子23a,23b、絶縁部25、固定部材29及び保持部材70~73を含んでおり、回路基板40上に実装されている。レセプタクル20には、プラグ10がz軸方向の正方向側(上方)から装着される。
(Receptacle structure)
FIG. 5 is an exploded perspective view of the receptacle 20. FIG. 6 is a view of the receptacle 20 as seen from the back side. As shown in FIG. 5, the receptacle 20 includes a receptacle body 21, spring terminals 23 a and 23 b, an insulating portion 25, a fixing member 29, and holding members 70 to 73, and is mounted on the circuit board 40. The plug 10 is attached to the receptacle 20 from the positive direction side (upward) in the z-axis direction.
 レセプタクル本体21、固定部材29及び保持部材70~73は、1枚の金属板が折り曲げられることによって構成されている。より詳細には、レセプタクル本体21、固定部材29及び保持部材70~73は、ロ字型の1枚の金属板が折り曲げられることで構成されている。より詳細には、金属板のx軸方向の正方向側の辺、y軸方向の正方向側の辺の中央部分及びy軸方向の負方向側の辺の中央部分がz軸方向の負方向側に向かって折り曲げられることにより、レセプタクル本体21、固定部材29及び保持部材70~73は構成されている。 The receptacle body 21, the fixing member 29, and the holding members 70 to 73 are configured by bending a single metal plate. More specifically, the receptacle body 21, the fixing member 29, and the holding members 70 to 73 are configured by bending a single rectangular metal plate. More specifically, the positive side of the metal plate in the x-axis direction, the central part of the positive side in the y-axis direction, and the central part of the negative side in the y-axis direction are in the negative direction in the z-axis direction. The receptacle body 21, the fixing member 29, and the holding members 70 to 73 are configured by being bent toward the side.
 レセプタクル本体21は、プラグ10がz軸方向の正方向側から装着される筐体である。レセプタクル本体21には、z軸方向の正方向側から見たときに、長方形状をなし、プラグ10がz軸方向の正方向側(上方)から装着される開口Oが設けられている。レセプタクル本体21は、z軸方向の正方向側(上方)から見たときに、プラグ10の周囲を囲む形状(すなわちロ字型)をなしている。より詳細には、開口Oは、辺k,l,m,nによって囲まれている。開口Oにおいて、y軸方向に延在している辺のうち、x軸方向の負方向側の辺が辺kであり、x軸方向の正方向側の辺が辺lである。また、x軸方向に延在している辺のうち、y軸方向の正方向側の辺が辺mであり、y軸方向の負方向側の辺が辺nである。辺kと辺l、辺mと辺nとは、互いに平行である。 The receptacle body 21 is a housing in which the plug 10 is mounted from the positive direction side in the z-axis direction. The receptacle body 21 is provided with an opening O that is rectangular when viewed from the positive direction side in the z-axis direction and in which the plug 10 is mounted from the positive direction side (upward) in the z-axis direction. The receptacle body 21 has a shape (that is, a square shape) surrounding the plug 10 when viewed from the positive direction side (upward) in the z-axis direction. More specifically, the opening O is surrounded by sides k, l, m, and n. In the opening O, among the sides extending in the y-axis direction, the side on the negative direction side in the x-axis direction is the side k, and the side on the positive direction side in the x-axis direction is the side l. Of the sides extending in the x-axis direction, the side on the positive direction side in the y-axis direction is the side m, and the side on the negative direction side in the y-axis direction is the side n. Side k and side l, side m and side n are parallel to each other.
 図5に示すように、レセプタクル本体21において、辺mの両端には、開口Oからy軸方向の正方向側(外側)へ向かって窪むように切り欠きA,Bが設けられている。切り欠きAは、切り欠きBよりもx軸方向の正方向側に位置している。切り欠きA,Bはそれぞれ、辺mからy軸方向の正方向側へいくにつれて、x軸方向の幅が狭くなる台形状をなしている。レセプタクル本体21において、辺nの両端には、開口Oからy軸方向の負方向側(外側)へ向かって窪むように切り欠きC,Dが設けられている。切り欠きCは、切り欠きDよりもx軸方向の正方向側に位置している。切り欠きC,Dはそれぞれ、辺nからy軸方向の負方向側にいく(遠ざかる)につれて、x軸方向の幅が狭くなる台形状をなしている。 As shown in FIG. 5, in the receptacle body 21, notches A and B are provided at both ends of the side m so as to be recessed from the opening O toward the positive side (outer side) in the y-axis direction. The notch A is located on the positive side in the x-axis direction from the notch B. The notches A and B each have a trapezoidal shape in which the width in the x-axis direction becomes narrower from the side m toward the positive side in the y-axis direction. In the receptacle body 21, notches C and D are provided at both ends of the side n so as to be recessed from the opening O toward the negative side (outer side) in the y-axis direction. The notch C is located on the positive side in the x-axis direction with respect to the notch D. Each of the cutouts C and D has a trapezoidal shape in which the width in the x-axis direction becomes narrower from the side n toward the negative direction side in the y-axis direction (moving away).
 固定部材29は、図5に示すように、レセプタクル本体21のy軸方向の正方向側の辺及びy軸方向の負方向側の辺においてx軸方向の負方向側の端部に接続されている。固定部材29は、z軸方向に延在しており、図1及び図2に示すように、回路基板40の孔41に圧入される。これにより、レセプタクル20は、回路基板40に実装されている。この際、固定部材29は固定基板40内のグランド導体に接続される。これによりレセプタクル本体21は、グランド電位に保たれる。 As shown in FIG. 5, the fixing member 29 is connected to the end on the negative side in the x-axis direction on the positive side in the y-axis direction and the negative side in the y-axis direction of the receptacle body 21. Yes. The fixing member 29 extends in the z-axis direction and is press-fitted into the hole 41 of the circuit board 40 as shown in FIGS. 1 and 2. Thereby, the receptacle 20 is mounted on the circuit board 40. At this time, the fixing member 29 is connected to the ground conductor in the fixed substrate 40. As a result, the receptacle body 21 is kept at the ground potential.
 保持部材70,71は、辺mの両端に位置し、プラグ10を固定するばね部材である。保持部材70は、保持部材71よりもx軸方向の正方向側に位置している。ここで、保持部材70,71のy軸方向の負方向側の端部を端部70a,71aとし、y軸方向の正方向側の端部を端部70b,71bとする。端部70a,71aは、z軸方向の正方向側から見たときに、開口O内に位置している。また、端部70aは、切り欠きA内に位置しており、端部71aは、切り欠きB内に位置している。端部70b,71bは、レセプタクル本体21と接続されている。これによって、保持部材70,71は、x軸方向から見たとき、U字状をなしている。端部70a,71aにおけるx軸方向の幅は、端部70b、71bにおけるx軸方向の幅よりも狭くなっている。すなわち、保持部材70,71は、先端にいくに従って、幅が狭くなる台形状をなしている。 The holding members 70 and 71 are spring members that are positioned at both ends of the side m and fix the plug 10. The holding member 70 is located on the positive side in the x-axis direction with respect to the holding member 71. Here, the end portions on the negative direction side in the y-axis direction of the holding members 70 and 71 are referred to as end portions 70a and 71a, and the end portions on the positive direction side in the y-axis direction are referred to as end portions 70b and 71b. The end portions 70a and 71a are located in the opening O when viewed from the positive direction side in the z-axis direction. The end portion 70a is located in the notch A, and the end portion 71a is located in the notch B. The end portions 70b and 71b are connected to the receptacle body 21. Accordingly, the holding members 70 and 71 are U-shaped when viewed from the x-axis direction. The widths of the end portions 70a and 71a in the x-axis direction are narrower than the widths of the end portions 70b and 71b in the x-axis direction. That is, the holding members 70 and 71 have a trapezoidal shape whose width becomes narrower toward the tip.
 保持部材72,73は、辺nの両端に位置し、プラグ10を固定するばね部材である。保持部材72は、保持部材73よりもx軸方向の正方向側に位置している。ここで、保持部材72,73のy軸方向の正方向側の端部を端部72a,73aとし、y軸方向の負方向側の端部を端部72b,73b(図示せず)とする。端部72a,73aは、z軸方向の正方向側から見たときに、開口O内に位置している。また、端部72aは、切り欠きC内に位置しており、端部73aは、切り欠きD内に位置している。端部72b,73bは、レセプタクル本体21と接続されている。これによって、保持部材72,73は、x軸方向から見たとき、U字状をなしている。端部72a,73aにおけるx軸方向の幅は、端部72b、73bにおけるx軸方向の幅よりも狭くなっている。すなわち、保持部材72,73は、先端にいくに従って、幅が狭くなる台形状をなしている。 The holding members 72 and 73 are spring members that are positioned at both ends of the side n and fix the plug 10. The holding member 72 is located on the positive side in the x-axis direction with respect to the holding member 73. Here, the ends of the holding members 72 and 73 on the positive side in the y-axis direction are end portions 72a and 73a, and the ends on the negative direction side in the y-axis direction are end portions 72b and 73b (not shown). . The ends 72a and 73a are located in the opening O when viewed from the positive direction side in the z-axis direction. Further, the end portion 72 a is located in the notch C, and the end portion 73 a is located in the notch D. The end portions 72b and 73b are connected to the receptacle body 21. Thus, the holding members 72 and 73 are U-shaped when viewed from the x-axis direction. The widths of the end portions 72a and 73a in the x-axis direction are narrower than the widths of the end portions 72b and 73b in the x-axis direction. That is, the holding members 72 and 73 have a trapezoidal shape whose width becomes narrower toward the tip.
 ばね端子23a,23bは、プラグ10と電気的に接続される信号用の外部電極である。以下に、ばね端子23a,23bについてより詳細に説明する。 The spring terminals 23 a and 23 b are signal external electrodes that are electrically connected to the plug 10. Below, it demonstrates in detail about the spring terminals 23a and 23b.
 ばね端子23aは、図5及び図6に示すように、接触部90a、ばね部91a及び固定部92aによって構成されている。ばね部91aは、接触部90aと固定部92aとを接続し、z軸方向の正方向側(上方)から見たときに、折り返し部を有するU字状の板ばねである。具体的には、ばね部91aは、保持部材71よりもx軸方向の負方向側に位置しており、図6に示すように、ばね部材93a,94a及び折り返し部95aを有している。ばね部材93a,94aは、辺kに沿って延在しており、同方向に折り曲げられている板ばねからなっている。具体的には、ばね部材93a,94aは、y軸方向の中点付近において、x軸方向の負方向側に折り曲げられた「く」字状をなし、z軸方向の正方向側から見たときに、y軸方向の正方向側にいくに従って、x軸方向の負方向側へと曲がっている。ばね部材93aは、ばね部材94aよりもx軸方向の正方向側に位置している。これによって、ばね部材93aは、z軸方向の正方向側(上方)から見たとき、保持部材71のx軸方向の負方向側において、保持部材71と対向しており、保持部材71から遠ざかる方向に曲がっている。折り返し部95aは、円弧状をなしており、ばね部材93aのy軸方向の正方向側の端部とばね部材94aのy軸方向の正方向側の端部とを接続している。 As shown in FIGS. 5 and 6, the spring terminal 23a includes a contact portion 90a, a spring portion 91a, and a fixing portion 92a. The spring portion 91a is a U-shaped leaf spring that connects the contact portion 90a and the fixed portion 92a and has a folded portion when viewed from the positive direction side (upward) in the z-axis direction. Specifically, the spring portion 91a is located on the negative side in the x-axis direction with respect to the holding member 71, and has spring members 93a and 94a and a folded portion 95a as shown in FIG. The spring members 93a and 94a are made of leaf springs that extend along the side k and are bent in the same direction. Specifically, the spring members 93a and 94a have a "<" shape that is bent toward the negative side in the x-axis direction near the middle point in the y-axis direction, and are viewed from the positive direction side in the z-axis direction. Sometimes, as it goes to the positive direction side in the y-axis direction, it bends to the negative direction side in the x-axis direction. The spring member 93a is located closer to the positive side in the x-axis direction than the spring member 94a. Thus, the spring member 93a faces the holding member 71 on the negative side in the x-axis direction of the holding member 71 when viewed from the positive direction side (upward) in the z-axis direction, and moves away from the holding member 71. Bent in the direction. The folded portion 95a has an arc shape, and connects the end of the spring member 93a on the positive direction side in the y-axis direction and the end of the spring member 94a on the positive direction side in the y-axis direction.
 ばね端子23bは、図5及び図6に示すように、接触部90b、ばね部91b及び固定部92bによって構成されている。ばね部91bは、接触部90bと固定部92bとを接続し、z軸方向の正方向側から見たときに、折り返し部を有するU字状の板ばねである。具体的には、ばね部91bは、保持部材73よりもx軸方向の負方向側に位置しており、図6に示すように、ばね部材93b,94b及び折り返し部95bを有している。ばね部材93b,94bは、辺kに沿って延在しており、同方向に折り曲げられている板ばねからなっている。具体的には、ばね部材93b,94bは、y軸方向の中点付近において、x軸方向の負方向側に折り曲げられた「く」字状をなし、z軸方向の正方向側から見たときに、y軸方向の負方向側にいくに従って、x軸方向の負方向側へと曲がっている。ばね部材93bは、ばね部材94bよりもx軸方向の正方向側に位置している。これによって、ばね部材93bは、保持部材73のx軸方向の負方向側において、保持部材73と対向しており、保持部材73から遠ざかる方向に曲がっている。折り返し部95bは、円弧状をなしており、ばね部材93bのy軸方向の負方向側の端部とばね部材94bのy軸方向の負方向側の端部とを接続している。 As shown in FIGS. 5 and 6, the spring terminal 23b includes a contact portion 90b, a spring portion 91b, and a fixing portion 92b. The spring portion 91b is a U-shaped leaf spring that connects the contact portion 90b and the fixed portion 92b and has a folded portion when viewed from the positive direction side in the z-axis direction. Specifically, the spring portion 91b is located on the negative side in the x-axis direction with respect to the holding member 73, and has spring members 93b and 94b and a folded portion 95b as shown in FIG. The spring members 93b and 94b are made of leaf springs that extend along the side k and are bent in the same direction. Specifically, the spring members 93b and 94b have a "<" shape that is bent toward the negative side in the x-axis direction near the middle point in the y-axis direction, and are viewed from the positive direction side in the z-axis direction. Sometimes, as it goes to the negative direction side in the y-axis direction, it bends to the negative direction side in the x-axis direction. The spring member 93b is located closer to the positive side in the x-axis direction than the spring member 94b. Accordingly, the spring member 93 b faces the holding member 73 on the negative side of the holding member 73 in the x-axis direction and is bent in a direction away from the holding member 73. The folded portion 95b has an arc shape, and connects the end of the spring member 93b on the negative direction side in the y-axis direction and the end of the spring member 94b on the negative direction side in the y-axis direction.
 接触部90a,90bは、ばね端子23a,23bの端部のうちx軸方向の正方向側に位置している(折り返し部95が接続されていない方の)端部である。接触部90aは、ばね部材93aにおいて、y軸方向の負方向側、かつ、z軸方向の正方向側の端部に接続されている。接触部90bは、ばね部材93bにおいて、y軸方向の正方向側、かつ、z軸方向の正方向側の端部に接続されている。接触部90a,90bは、図6に示すように、z軸方向の正方向側(上方)から見たときに、開口O内に位置している。接触部90a,90bは、y軸方向の正方向側(水平方向であって、光ファイバ50と直交している方向)から見たときに、逆U字状をなすように折り曲げられて、ばね部91a,91bのx軸方向の正方向側に引き出されている。接触部90a,90bは、プラグ10のx軸方向の負方向側の側面に接触している。より具体的には、接触部90a,90bはそれぞれ、プラグ10の外部電極16a,16bと接触している。ここで、接触部90a,90bはそれぞれ、ばね部91a,91bのx軸方向の正方向側の端部とのなす角度が約45°になるように傾けられている。 The contact portions 90a and 90b are end portions of the end portions of the spring terminals 23a and 23b that are located on the positive direction side in the x-axis direction (the one to which the folded portion 95 is not connected). The contact portion 90a is connected to the end of the spring member 93a on the negative side in the y-axis direction and on the positive side in the z-axis direction. The contact portion 90b is connected to the end of the spring member 93b on the positive side in the y-axis direction and on the positive direction side in the z-axis direction. As shown in FIG. 6, the contact portions 90 a and 90 b are located in the opening O when viewed from the positive direction side (upward) in the z-axis direction. The contact portions 90a and 90b are bent so as to form an inverted U shape when viewed from the positive direction side in the y-axis direction (the direction that is horizontal and orthogonal to the optical fiber 50), The portions 91a and 91b are drawn to the positive direction side in the x-axis direction. The contact portions 90a and 90b are in contact with the side surface of the plug 10 on the negative side in the x-axis direction. More specifically, the contact portions 90a and 90b are in contact with the external electrodes 16a and 16b of the plug 10, respectively. Here, the contact portions 90a and 90b are inclined so that the angle formed by the end portions on the positive direction side in the x-axis direction of the spring portions 91a and 91b is about 45 °.
 固定部92a,92bは、ばね端子23a,23bの端部のうちx軸方向の負方向側に位置している(折り返し部95が接続されていない方の)端部であり、x軸方向の負方向側に向かって延びている。固定部92a,92bは、z軸方向の正方向側(上方)から見たときに、辺kよりも開口Oの外側に位置している。固定部92aは、ばね部材94aにおいてy軸方向の負方向側、かつ、z軸方向の負方向側の端部に接続されている。固定部92bは、ばね部材94bにおいてy軸方向の正方向側、かつ、z軸方向の負方向側の端部に接続されている。固定部92a,92bは、レセプタクル20の実装時に、回路基板40のランド(図示せず)に接続され、外部端子として機能する。 The fixing portions 92a and 92b are end portions of the end portions of the spring terminals 23a and 23b that are located on the negative direction side in the x-axis direction (the side to which the folded portion 95 is not connected), and are fixed in the x-axis direction. It extends toward the negative direction. The fixed portions 92a and 92b are located outside the opening O with respect to the side k when viewed from the positive direction side (upward) in the z-axis direction. The fixed portion 92a is connected to the end of the spring member 94a on the negative direction side in the y-axis direction and on the negative direction side in the z-axis direction. The fixed portion 92b is connected to the end of the spring member 94b on the positive side in the y-axis direction and on the negative direction side in the z-axis direction. The fixing portions 92a and 92b are connected to lands (not shown) of the circuit board 40 when the receptacle 20 is mounted, and function as external terminals.
 以上のように構成されたばね端子23a,23bは、z軸方向の正方向側から見たときに、折り返し部95a,95bを有するU字状をなしている。ばね端子23aは、U字状の折り返し部95aがy軸方向の正方向側を向いており、折り返し部95aの先端は、z軸方向の正方向側(上方)から見たときに、辺m(辺kに直交する辺)よりもy軸方向の正方向側(開口Oに対して外側)に位置している。ばね端子23bは、U字状の折り返し部95bがy軸方向の負方向側を向いており、折り返し部95bの先端は、辺n(辺kに直交する辺)よりもy軸方向の負方向側(開口Oに対して外側)に位置している。これにより、ばね端子23aとばね端子23bとは、z軸方向の正方向側(上方)から見たときに、x軸(光ファイバ50が延在している方向)に対して線対称となっている。そして、ばね端子23a,23bは、接触部90a,90bが外部電極16a,16bと接触し、固定部92a,92bが回路基板40のランドに接続されることにより、プラグ10と回路基板40との間の信号の伝送を中継する端子として機能している。 The spring terminals 23a and 23b configured as described above have a U shape having folded portions 95a and 95b when viewed from the positive side in the z-axis direction. The spring terminal 23a has a U-shaped folded portion 95a facing the positive direction side in the y-axis direction, and the tip of the folded portion 95a is side m when viewed from the positive direction side (upward) in the z-axis direction. It is located on the positive side in the y-axis direction (outside with respect to the opening O) with respect to (side perpendicular to the side k). In the spring terminal 23b, the U-shaped folded portion 95b faces the negative direction side in the y-axis direction, and the tip of the folded portion 95b is in the negative direction in the y-axis direction from the side n (side perpendicular to the side k). It is located on the side (outside with respect to the opening O). Thereby, the spring terminal 23a and the spring terminal 23b are axisymmetric with respect to the x-axis (the direction in which the optical fiber 50 extends) when viewed from the positive direction side (upward) in the z-axis direction. ing. The spring terminals 23a and 23b are configured such that the contact portions 90a and 90b are in contact with the external electrodes 16a and 16b, and the fixing portions 92a and 92b are connected to the lands of the circuit board 40. It functions as a terminal that relays signal transmission between them.
 絶縁部25は、直方体状をなし、樹脂によって構成されている。絶縁部25は、ばね端子23a,23bと一体成型されている。これによって、ばね端子23a,23bは、レセプタクル本体21と電気的に接続されないようレセプタクル本体21に絶縁部25によって、固定されている。より詳細には、絶縁部25のy軸方向の正方向側の側面及びy軸方向の負方向側の側面から、ばね部91a及びばね部91bが引き出され、絶縁部25の背面から、固定部92a,92bが引き出されている。そして、絶縁部25は、絶縁部25の上面28において、レセプタクル本体21に固定されている。 The insulating portion 25 has a rectangular parallelepiped shape and is made of resin. The insulating portion 25 is integrally formed with the spring terminals 23a and 23b. Thus, the spring terminals 23 a and 23 b are fixed to the receptacle body 21 by the insulating portion 25 so as not to be electrically connected to the receptacle body 21. More specifically, the spring portion 91a and the spring portion 91b are drawn out from the side surface on the positive side in the y-axis direction and the side surface on the negative direction side in the y-axis direction of the insulating portion 25. 92a and 92b are pulled out. The insulating portion 25 is fixed to the receptacle body 21 on the upper surface 28 of the insulating portion 25.
 以上のように構成されたレセプタクル20には、開口O内にプラグ10がz軸方向の正方向側から装着される。このとき、図1及び図2に示すように、保持部材70~73はそれぞれ、凹部80~83に係合する。更に、ばね端子23a,23bと外部電極16a,16bとは接触し、ばね端子23a,23bは、外部電極16a,16bに対して圧接する。また、プラグ10は、ばね端子23a,23bによって、x軸方向の正方向側に押される。これらによって、プラグ10は、レセプタクル20に固定される。 In the receptacle 20 configured as described above, the plug 10 is mounted in the opening O from the positive side in the z-axis direction. At this time, as shown in FIGS. 1 and 2, the holding members 70 to 73 engage with the recesses 80 to 83, respectively. Furthermore, the spring terminals 23a and 23b and the external electrodes 16a and 16b are in contact with each other, and the spring terminals 23a and 23b are in pressure contact with the external electrodes 16a and 16b. The plug 10 is pushed to the positive side in the x-axis direction by the spring terminals 23a and 23b. Thus, the plug 10 is fixed to the receptacle 20.
 図7は、コネクタ1が用いられた送受信システム100の概略構成図である。図7に示すように、光ファイバ50の両端に受信用コネクタ1a及び送信用コネクタ1bがそれぞれ設けられる。そして、受信用コネクタ1aは、受信用回路基板40a及びフォトダイオード12aを備えている。送信用コネクタ1bは、送信用回路基板40b及びVCSEL12bを備えている。これによって、光ファイバ50を通じて、送信用コネクタ1bから受信用コネクタ1aへ信号が伝送される。 FIG. 7 is a schematic configuration diagram of a transmission / reception system 100 in which the connector 1 is used. As shown in FIG. 7, a receiving connector 1a and a transmitting connector 1b are provided at both ends of the optical fiber 50, respectively. The receiving connector 1a includes a receiving circuit board 40a and a photodiode 12a. The transmission connector 1b includes a transmission circuit board 40b and a VCSEL 12b. As a result, a signal is transmitted from the transmission connector 1b to the reception connector 1a through the optical fiber 50.
(効果)
 以下に説明するように、コネクタ1によれば、高いSN比を得ることができる。より詳細には、コネクタ1では、接触部90a,90bはそれぞれ、外部電極16a,16bに対して圧接している。そのため、接触部90a,90bと外部電極16a,16bとの接触面積は、これらが圧接していない場合における接触面積よりも大きくなるので、接触部90a,90bと外部電極16a,16bとの間の抵抗値も、これらが圧接していない場合における抵抗値よりも低くなる。これにより、プラグ10からレセプタクル20を介して電気回路部30へと伝送される電気信号の電流値が大きくなる。よって、コネクタ1によれば、高いSN比を得ることができる。
(effect)
As will be described below, according to the connector 1, a high S / N ratio can be obtained. More specifically, in the connector 1, the contact portions 90a and 90b are in pressure contact with the external electrodes 16a and 16b, respectively. Therefore, the contact area between the contact portions 90a and 90b and the external electrodes 16a and 16b is larger than the contact area in the case where they are not in pressure contact with each other. The resistance value is also lower than the resistance value when they are not in pressure contact. Thereby, the current value of the electrical signal transmitted from the plug 10 to the electrical circuit unit 30 via the receptacle 20 is increased. Therefore, according to the connector 1, a high SN ratio can be obtained.
 レセプタクル20によると、保持部材70~73によってプラグ10がレセプタクル20に固定されているので、プラグ10とレセプタクル20との嵌合力を強くすることができる。以下に図面を参照しながら説明する。図8(a)は、プラグ10とレセプタクル20とがプラグ10の4隅で嵌合されている場合の嵌合力の説明に用いる図である。図8(b)は、プラグ210とレセプタクル220とがプラグ210の4隅以外で嵌合されている場合の嵌合力の説明に用いる図である。 According to the receptacle 20, since the plug 10 is fixed to the receptacle 20 by the holding members 70 to 73, the fitting force between the plug 10 and the receptacle 20 can be increased. This will be described below with reference to the drawings. FIG. 8A is a diagram used for explaining the fitting force when the plug 10 and the receptacle 20 are fitted at the four corners of the plug 10. FIG. 8B is a diagram used for explaining the fitting force when the plug 210 and the receptacle 220 are fitted at other than the four corners of the plug 210.
 図8(a)に示すように、プラグ10とレセプタクル20とがプラグ10の4隅で嵌合されている場合、及び、図8(b)に示すように、プラグ210とレセプタクル220とがプラグ210のx軸方向の負方向側の端部の2か所及びプラグ210のx軸方向の正方向側の端部以外の2か所で嵌合されている場合について、光ファイバ50,250をz軸方向の正方向側に引いたときのプラグ10,210の外れ易さを比較する。光ファイバ50をz軸方向の正方向側に引くとき、支点となるのは、プラグ10,210のx軸方向の負方向側の端部の支点Sである。ここで、F1は、光ファイバ50,250をz軸方向の正方向側に引く力、F2は、嵌合によってプラグ10,210にかかる力である。L1は、光ファイバ50,250において力が加えられる点から支点Sまでの長さ、L2は、レセプタクル20のx軸方向の正方向側の端部においてプラグ10とレセプタクル20とが嵌合されている点から支点Sまでの長さである。L3は、レセプタクル220のx軸方向の負方向側の端部以外において、プラグ210とレセプタクル220とが嵌合されている点から支点Sまでの長さである。M1は、支点Sを中心に時計回りに働く力のモーメントで、M2は、支点Sを中心に時計回りに働く力のモーメントである。 As shown in FIG. 8A, when the plug 10 and the receptacle 20 are fitted at the four corners of the plug 10, and as shown in FIG. 8B, the plug 210 and the receptacle 220 are plugged. When the optical fibers 50 and 250 are fitted in two places other than the two ends on the negative side in the x-axis direction of 210 and the two ends other than the end on the positive direction side in the x-axis direction of the plug 210. The ease of detachment of the plugs 10 and 210 when pulled to the positive side in the z-axis direction will be compared. When the optical fiber 50 is pulled to the positive side in the z-axis direction, the fulcrum is the fulcrum S at the end of the plugs 10 and 210 on the negative side in the x-axis direction. Here, F1 is a force that pulls the optical fibers 50 and 250 toward the positive direction in the z-axis direction, and F2 is a force that is applied to the plugs 10 and 210 by fitting. L1 is the length from the point where the force is applied in the optical fibers 50 and 250 to the fulcrum S, and L2 is the plug 10 and the receptacle 20 fitted at the positive end of the receptacle 20 in the x-axis direction. It is the length from the point to the fulcrum S. L3 is the length from the point where the plug 210 and the receptacle 220 are fitted to the fulcrum S except for the negative end of the receptacle 220 in the x-axis direction. M1 is a moment of force acting clockwise around the fulcrum S, and M2 is a moment of force acting clockwise around the fulcrum S.
 図8(a)に示すように、光ファイバ50をz軸方向の正方向側にF1の力で引いたとき、支点Sを中心に時計回りに働く力のモーメントは、F1L1である。このとき、プラグ10とレセプタクル20とが嵌合されていることによって、支点Sを中心に反時計回りに働く力のモーメントは、F2L2である。よって、支点Sを中心に時計回りに働く力のモーメントは、式(1)のようになる。
 M1=F1L1-F2L2…(1)
As shown in FIG. 8A, when the optical fiber 50 is pulled to the positive direction side in the z-axis direction by the force F1, the moment of the force acting clockwise around the fulcrum S is F1L1. At this time, when the plug 10 and the receptacle 20 are fitted, the moment of the force acting counterclockwise around the fulcrum S is F2L2. Therefore, the moment of the force acting clockwise around the fulcrum S is as shown in Equation (1).
M1 = F1L1-F2L2 (1)
 図8(b)に示すように、光ファイバ250をz軸方向の正方向側にF1の力で引いたとき、支点Sを中心に時計回りに働く力のモーメントは、F1L1であり、図8(a)の場合と等しい。このとき、プラグ210とレセプタクル220とが嵌合されていることによって、支点Sを中心に反時計回りに働く力のモーメントは、F2L3である。よって、支点Sを中心に時計回りに働く力のモーメントは、式(2)のようになる。
 M2=F1L1-F2L3…(2)
As shown in FIG. 8B, when the optical fiber 250 is pulled to the positive side in the z-axis direction with the force F1, the moment of the force acting clockwise around the fulcrum S is F1L1. Same as (a). At this time, the moment of the force acting counterclockwise around the fulcrum S is F2L3 because the plug 210 and the receptacle 220 are fitted. Therefore, the moment of the force acting clockwise around the fulcrum S is as shown in Equation (2).
M2 = F1L1-F2L3 (2)
 ここで、図8(a)及び図8(b)から、L2>L3が成立しているため、式(1)と式(2)とを比較すると、M1<M2となる。そのため、図8(a)に示すように、プラグ10とレセプタクル20とが4隅で嵌合されている場合の方が、レセプタクルからプラグが外れようとするモーメントが小さい。すなわち、プラグ10の方がプラグ210よりもレセプタクルから外れにくく、プラグ10とレセプタクル20との嵌合力が強い。 Here, from FIG. 8A and FIG. 8B, since L2> L3 is established, when the expressions (1) and (2) are compared, M1 <M2. Therefore, as shown in FIG. 8 (a), when the plug 10 and the receptacle 20 are fitted at the four corners, the moment at which the plug is detached from the receptacle is smaller. That is, the plug 10 is less likely to be detached from the receptacle than the plug 210, and the fitting force between the plug 10 and the receptacle 20 is stronger.
 更に、レセプタクル20によれば、プラグ10とレセプタクル20とをプラグ10の4隅において嵌合し、嵌合力を増加させた場合であっても、コネクタ1の低背化を図ることができる。より詳細には、保持部材70~73は、図5及び図6に示すように、レセプタクル20の開口Oの4隅に位置している。そのため、ばね端子23a,23bがz軸方向から見たときにy軸方向に延びるU字状をなすように配置されている場合は、保持部材71,73とばね端子23a,23bとは接触してしまう。これを避けるために、ばね端子23a,23bをy軸方向から見たときに逆U字状をなすよう配置することも考えられる。しかしながら、この場合には、レセプタクル20がz軸方向に延在する長さが長くなってしまい、レセプタクル20の低背化を図ることができない。 Furthermore, according to the receptacle 20, even when the plug 10 and the receptacle 20 are fitted at the four corners of the plug 10 and the fitting force is increased, the height of the connector 1 can be reduced. More specifically, the holding members 70 to 73 are located at the four corners of the opening O of the receptacle 20 as shown in FIGS. Therefore, when the spring terminals 23a and 23b are arranged so as to form a U shape extending in the y-axis direction when viewed from the z-axis direction, the holding members 71 and 73 and the spring terminals 23a and 23b are in contact with each other. End up. In order to avoid this, it is conceivable to arrange the spring terminals 23a and 23b so as to form an inverted U shape when viewed from the y-axis direction. However, in this case, the length of the receptacle 20 extending in the z-axis direction becomes long, and the receptacle 20 cannot be reduced in height.
 そこで、ばね端子23a,23bは、以下に説明する構成を有している。より詳細には、ばね部材93a,93bは、y軸方向の中点付近において、x軸方向の負方向側に折り曲げられた「く」字状をなしている。すなわち、ばね部材93aは、z軸方向の正方向側から見たときに、y軸方向の正方向側にいくに従って、x軸方向の負方向側へと曲がっている。同様に、ばね部材93bは、z軸方向の正方向側から見たときに、y軸方向の負方向側にいくに従って、x軸方向の負方向側へと曲がっている。これによって、ばね端子23a,23bのうち、ばね端子23a,23bから最も近い位置にある保持部材71,73と対向しているばね部材93a,93bは、該保持部材71,73から遠ざかる方向へと曲がっている。その結果、ばね部材93a,93bが保持部材71,73と接触することが抑制され、レセプタクル20の低背化が図られる。 Therefore, the spring terminals 23a and 23b have a configuration described below. More specifically, the spring members 93a and 93b have a “<” shape that is bent toward the negative side in the x-axis direction near the middle point in the y-axis direction. That is, the spring member 93a is bent toward the negative direction side in the x-axis direction as it goes to the positive direction side in the y-axis direction when viewed from the positive direction side in the z-axis direction. Similarly, when viewed from the positive direction side in the z-axis direction, the spring member 93b is bent toward the negative direction side in the x-axis direction as it goes to the negative direction side in the y-axis direction. As a result, of the spring terminals 23a and 23b, the spring members 93a and 93b facing the holding members 71 and 73 closest to the spring terminals 23a and 23b are moved away from the holding members 71 and 73. bent. As a result, the contact of the spring members 93a and 93b with the holding members 71 and 73 is suppressed, and the height of the receptacle 20 is reduced.
 また、ばね端子23a,23bのU字状の折り返し部分の先端はそれぞれ、辺mまたは辺nよりもy軸方向の正方向側またはy軸方向の負方向側に位置している。そのため、ばね部91a,91bの長さを十分に長くすることができ、ばね端子23a,23bは、大きく変位させられても塑性変形しにくい。すなわち、ばね端子23a,23bにおいて、高いばね性を得ることができる。 Further, the tips of the U-shaped folded portions of the spring terminals 23a and 23b are located on the positive side in the y-axis direction or on the negative direction side in the y-axis direction from the side m or the side n, respectively. Therefore, the length of the spring portions 91a and 91b can be made sufficiently long, and the spring terminals 23a and 23b are not easily plastically deformed even if they are greatly displaced. That is, high spring properties can be obtained at the spring terminals 23a and 23b.
 図5に示すように、レセプタクル本体21に切り欠きA~Dを設けることによって、保持部材70~73の端部70a,71a,72a,73aとレセプタクル本体21とが通常では接触しない構造になっている。 As shown in FIG. 5, by providing the receptacle body 21 with notches A to D, the end portions 70a, 71a, 72a, 73a of the holding members 70 to 73 and the receptacle body 21 are not normally in contact with each other. Yes.
 切り欠きA~Dは、図5及び図6に示すように、z軸方向の正方向側から見たときにそれぞれ辺m,nから遠くなるにつれて、x軸方向の幅が狭くなる台形状をなしている。これによって、レセプタクル20では、切り欠きA~Dが長方形状である場合と比較して、レセプタクル本体21の面積が大きくなるので、レセプタクル本体21の強度が高くなる。 As shown in FIGS. 5 and 6, the notches A to D have trapezoidal shapes in which the width in the x-axis direction becomes narrower as the distance from the sides m and n increases when viewed from the positive direction side in the z-axis direction. There is no. As a result, in the receptacle 20, the area of the receptacle body 21 is larger than in the case where the notches A to D are rectangular, so that the strength of the receptacle body 21 is increased.
 保持部材70~73の端部70a,71a,72a,73aにおけるx軸方向の幅は、端部70b,71b,72b,73bにおけるx軸方向の幅よりも短くなっている。これによって、切り欠きA~Dの面積が小さくても、保持部材70~73が切り欠きA~Dに嵌ることが可能となる。 The width in the x-axis direction at the end portions 70a, 71a, 72a, 73a of the holding members 70 to 73 is shorter than the width in the x-axis direction at the end portions 70b, 71b, 72b, 73b. Accordingly, even if the areas of the notches A to D are small, the holding members 70 to 73 can be fitted into the notches A to D.
 保持部材70~73は、レセプタクル本体21に接続されている端部70b,71b,72b,73bを起点としたフック形状をなしている。そのため、保持部材70~73は、ばねとして機能する部分の長さが長いことから、大きく変位させられても、塑性変形しにくい。すなわち、高いばね性を得ることができる。 The holding members 70 to 73 have hook shapes starting from the end portions 70b, 71b, 72b, 73b connected to the receptacle body 21. Therefore, the holding members 70 to 73 are long in the length of the portion functioning as a spring, and thus are difficult to be plastically deformed even if they are largely displaced. That is, a high spring property can be obtained.
 また、図5に示すように、保持部材70~73において、端部70a~73aは、大きく変位しようとするとレセプタクル本体21に当たってしまう。そのため、保持部材70~73は、塑性変形するほど大きく変位しない。 Further, as shown in FIG. 5, in the holding members 70 to 73, the end portions 70a to 73a come into contact with the receptacle main body 21 if they are to be largely displaced. Therefore, the holding members 70 to 73 are not displaced so much as to be plastically deformed.
 接触部90a,90bによって、プラグ10をx軸方向の正方向側へ押し込むことで、レセプタクル本体21に固定させることができる。 The plug 10 can be fixed to the receptacle body 21 by pushing the plug 10 toward the positive side in the x-axis direction by the contact portions 90a and 90b.
 接触部90a,90bの先端はそれぞれ、ばね部材93a,93bとのなす角度が約45°になるように傾けられている。そのため、接触部90a,90bは、機械的にプラグ10の誘い込みを行うことができる。 The tips of the contact portions 90a and 90b are inclined so that the angle formed by the spring members 93a and 93b is about 45 °, respectively. Therefore, the contact portions 90a and 90b can mechanically guide the plug 10.
 接触部90a,90bは、ばね部材93a,93bが撓むことによって、x軸方向に変位する。ここで、図5に示すように、接触部90a,90bのx軸方向の負方向側には、絶縁部25が設けられている。そのため、接触部90a,90bは、大きく変位しようとすると絶縁部25に当たってしまう。よって、接触部90a,90bは、塑性変形するほど大きく変位しない。 The contact portions 90a and 90b are displaced in the x-axis direction when the spring members 93a and 93b are bent. Here, as shown in FIG. 5, the insulating portion 25 is provided on the negative side of the contact portions 90 a and 90 b in the x-axis direction. For this reason, the contact portions 90a and 90b come into contact with the insulating portion 25 if they are to be largely displaced. Therefore, the contact portions 90a and 90b are not displaced so much as to be plastically deformed.
 レセプタクル20において、図1及び図2に示すように、固定部材29は、孔41に圧入されている。そのため、プラグ10をレセプタクル20から挿抜する際、プラグ10をz軸方向の正方向側に引き上げることで、レセプタクル20にz軸方向の正方向側へ応力がかかっても、レセプタクル20は、回路基板40に確実に実装されているため、回路基板40から外れない。 In the receptacle 20, the fixing member 29 is press-fitted into the hole 41 as shown in FIGS. 1 and 2. Therefore, when the plug 10 is inserted into and removed from the receptacle 20, even if the receptacle 20 is stressed in the positive z-axis direction by pulling up the plug 10 in the positive z-axis direction, the receptacle 20 Since it is securely mounted on the circuit board 40, it cannot be detached from the circuit board 40.
 図2に示すように、z軸方向の正方向側(上方)から見たときに、レセプタクル本体21はプラグ10を囲む形状をなしていることから、プラグ10がレセプタクル20から抜けにくくなり、プラグ10とレセプタクル20との嵌合力を強くすることができる。 As shown in FIG. 2, when viewed from the positive side (upper side) in the z-axis direction, the receptacle body 21 has a shape surrounding the plug 10, so that the plug 10 is difficult to be removed from the receptacle 20, and the plug The fitting force between 10 and the receptacle 20 can be increased.
 図9は、プラグ10をレセプタクル20から挿抜する際に用いるピンセット型の道具Eの先端部分を表した図である。コネクタ1においては、道具Eを用いて、プラグ10をレセプタクル20から挿抜するため、挿抜時に光ファイバ50などに手を触れる必要がなくなる。光ファイバ50に対する応力を緩和することができるので、光ファイバ50に負担をかけず、断線等の故障を防止することができる。より詳細には、図9に示すL字型の道具Eを、切り欠きM,Nからプラグ10の凹部U,V(図2及び図3参照)に嵌めこむことで、プラグ10をレセプタクル20から挿抜する。プラグ10をレセプタクル20に挿入する際は、道具Eでプラグ10を挟み、レセプタクル本体21のz軸方向の正方向側から嵌めこむ。 FIG. 9 is a view showing a tip portion of a tweezers-type tool E used when the plug 10 is inserted and removed from the receptacle 20. In the connector 1, since the plug 10 is inserted into and removed from the receptacle 20 using the tool E, it is not necessary to touch the optical fiber 50 or the like during insertion / removal. Since stress on the optical fiber 50 can be relieved, a failure such as disconnection can be prevented without placing a burden on the optical fiber 50. More specifically, the plug 10 is removed from the receptacle 20 by fitting the L-shaped tool E shown in FIG. 9 into the recesses U and V (see FIGS. 2 and 3) of the plug 10 from the notches M and N. Insert and remove. When the plug 10 is inserted into the receptacle 20, the plug 10 is sandwiched by the tool E and is inserted from the positive side of the receptacle body 21 in the z-axis direction.
 また、図1及び図2に示すように、切り欠きM,Nを介して、プラグ10とレセプタクル20との嵌合を、確認することができるため、嵌合作業の効率が良くなる。 Further, as shown in FIGS. 1 and 2, since the fitting between the plug 10 and the receptacle 20 can be confirmed through the notches M and N, the efficiency of the fitting work is improved.
 更に、金属キャップ33と金属部材18とレセプタクル本体21とは、グランドに接続されているため、同電位になっている。これにより、コネクタ1全体は、外部からのノイズが遮断され、コネクタ1はシールド効果を発揮することができる。シールド効果によって、回路素子31の耐ESD性(静電気放電)及び耐EMC性(電磁両立性)を向上させることができる。また、外部電気インターフェイスの耐EMC性を向上させることができる。 Furthermore, since the metal cap 33, the metal member 18, and the receptacle body 21 are connected to the ground, they are at the same potential. As a result, the entire connector 1 is shielded from external noise, and the connector 1 can exhibit a shielding effect. Due to the shielding effect, the ESD resistance (electrostatic discharge) and the EMC resistance (electromagnetic compatibility) of the circuit element 31 can be improved. In addition, the EMC resistance of the external electrical interface can be improved.
 金属部材18及びレセプタクル本体21は金属によって構成されており、それぞれ回路基板40のグランド導体(図示せず)に接続されている。そのため、静電気による大電流は、金属部材18、レセプタクル本体21及び回路基板40のグランド導体を介してグランドへと導かれるようになる。 The metal member 18 and the receptacle body 21 are made of metal and are connected to a ground conductor (not shown) of the circuit board 40, respectively. Therefore, a large current due to static electricity is guided to the ground through the metal member 18, the receptacle body 21 and the ground conductor of the circuit board 40.
 プラグ10は、図1及び図2に示すように、金属製の保持部材70~73を介してレセプタクル20に接触している。そのため、プラグ10と保持部材70~73との間に摩耗が発生しにくく、プラグ10及び保持部材70~73の形状ばらつきによる接触性の偏りを防止できる。 The plug 10 is in contact with the receptacle 20 through metal holding members 70 to 73 as shown in FIGS. Therefore, wear hardly occurs between the plug 10 and the holding members 70 to 73, and uneven contact due to variations in the shapes of the plug 10 and the holding members 70 to 73 can be prevented.
 プラグ10とレセプタクル20とは、金属部材18とレセプタクル本体21とが嵌合することによって固定されているため、嵌合時のクリック感が強く、嵌合できたことを音と感触で実感することができる。 Since the plug 10 and the receptacle 20 are fixed by fitting the metal member 18 and the receptacle main body 21, the click feeling at the time of fitting is strong, and the fact that the fitting has been achieved can be realized with sound and touch. Can do.
(その他の実施形態)
 以上のように構成されたコネクタ1は、前記実施形態に示したものに限らない。したがって、コネクタ1は、その要旨の範囲内において変更可能である。
(Other embodiments)
The connector 1 configured as described above is not limited to that shown in the embodiment. Therefore, the connector 1 can be changed within the scope of the gist.
 本実施形態におけるレセプタクル本体21の光電変換素子は、受光素子12であるとしたが、発光素子であってもよい。発光素子は、電気回路部30から出力されてきた電気信号を光信号に変換し、光ファイバ50に出力する。このとき電気回路部30のIC32は、駆動回路として機能する。IC32は、ばね端子23a,23bと電気的に接続されており、かつ、発光素子へ出力する電気信号を生成する。 Although the photoelectric conversion element of the receptacle body 21 in the present embodiment is the light receiving element 12, it may be a light emitting element. The light emitting element converts the electrical signal output from the electrical circuit unit 30 into an optical signal and outputs the optical signal to the optical fiber 50. At this time, the IC 32 of the electric circuit unit 30 functions as a drive circuit. The IC 32 is electrically connected to the spring terminals 23a and 23b and generates an electric signal to be output to the light emitting element.
 ここで、IC32は、発光素子の光量に応じた電流値を出力する。そのため、発光素子の光量が少ないときは、IC32は、微弱な電流値を有する電気信号を出力する。よって、この電気信号にノイズがのると、SN比が低くなってしまうという問題を有する。この場合においても、プラグ10とレセプタクル20とを圧接させることが有効である。 Here, the IC 32 outputs a current value corresponding to the light amount of the light emitting element. Therefore, when the light amount of the light emitting element is small, the IC 32 outputs an electrical signal having a weak current value. Therefore, there is a problem that the S / N ratio is lowered when noise is applied to the electrical signal. Even in this case, it is effective to press the plug 10 and the receptacle 20 in pressure contact.
 また、外部電極16a,16bがばね端子であり、レセプタクル20に設けられているばね端子23a,23bが板状の外部電極に置き換えられていてもよい。この場合、外部電極16a,16bは、y軸方向(水平方向であって前記光ファイバと直交する方向)から見たときに、U字状をなす板ばねであり、レセプタクル20と接触している。 Further, the external electrodes 16a and 16b may be spring terminals, and the spring terminals 23a and 23b provided in the receptacle 20 may be replaced with plate-like external electrodes. In this case, the external electrodes 16a and 16b are U-shaped leaf springs when viewed from the y-axis direction (the direction that is horizontal and orthogonal to the optical fiber), and are in contact with the receptacle 20. .
 図10は、その他の実施形態に係るコネクタ1が用いられた送受信システムの概略構成図100aである。図10に示すように、受信用コネクタ1a,送信用コネクタ1bには、SERDES装置99が設けられていてもよい。SERDES装置99は、回路基板40に実装されている。SERDES装置99は、シリアル信号をパラレル信号に変換し、パラレル信号をシリアル信号に変換する。これによって、駆動回路とSERDES回路との間隔が狭くなるため、光伝送特性が向上する。 FIG. 10 is a schematic configuration diagram 100a of a transmission / reception system in which the connector 1 according to another embodiment is used. As shown in FIG. 10, a SERDES device 99 may be provided in the receiving connector 1a and the transmitting connector 1b. The SERDES device 99 is mounted on the circuit board 40. The SERDES device 99 converts a serial signal into a parallel signal, and converts the parallel signal into a serial signal. As a result, the distance between the drive circuit and the SERDES circuit is narrowed, so that the optical transmission characteristics are improved.
 コネクタ1において、金属キャップ33とレセプタクル本体21とは、一体となっていてもよい。これによって、コネクタ1全体の耐ESD性、耐EMC性を向上させることができる。また、部品数が少なくなることによってコスト削減を図ることができ、作製時の低工数化により作製時間が短縮される。 In the connector 1, the metal cap 33 and the receptacle body 21 may be integrated. As a result, the ESD resistance and EMC resistance of the entire connector 1 can be improved. Further, the cost can be reduced by reducing the number of parts, and the manufacturing time can be shortened by reducing the number of man-hours at the time of manufacturing.
 レセプタクル20においては、保持部材は4つ設けられているが、保持部材は5つ以上設けられていてもよい。この場合、複数か所でプラグ10とレセプタクル20とが嵌合されるため、嵌合力をより強くすることができる。また、保持部材とレセプタクル本体21とが接触しないように、レセプタクル本体21に複数の切り欠きを設ける必要がある。 In the receptacle 20, four holding members are provided, but five or more holding members may be provided. In this case, since the plug 10 and the receptacle 20 are fitted at a plurality of locations, the fitting force can be further increased. Moreover, it is necessary to provide a plurality of notches in the receptacle body 21 so that the holding member and the receptacle body 21 do not come into contact with each other.
 レセプタクル20においては、ばね端子は2つ設けられているが、ばね端子は、1つだけであってもよい。1つのばね端子であっても、その両端に接触部及び固定部を有していれば、外部電極16a,16bや回路基板40のランド(図示せず)と接続されることができるからである。 In the receptacle 20, two spring terminals are provided, but only one spring terminal may be provided. This is because even a single spring terminal can be connected to the external electrodes 16a and 16b and the land (not shown) of the circuit board 40 if it has a contact portion and a fixed portion at both ends thereof. .
 プラグ10に搭載される光ファイバ50及び受光素子12は、複数個あってもよい。これによって、伝送容量を増やすことができる。また、光ファイバ50及び受光素子12は、アレイ化されていてもよい。 There may be a plurality of optical fibers 50 and light receiving elements 12 mounted on the plug 10. Thereby, the transmission capacity can be increased. Moreover, the optical fiber 50 and the light receiving element 12 may be arrayed.
 光ファイバ50は、石英ファイバだけでなく、有機光導波路やPOF(Plastic Optical Fiber)であってもよい。用途に合わせて、これらの光伝送路を選択することができる。 The optical fiber 50 may be not only a quartz fiber but also an organic optical waveguide or POF (Plastic Optical Fiber). These optical transmission paths can be selected according to the application.
 なお、金属部材18及び金属キャップ33は、金属によって構成されていなくてもよい。 Note that the metal member 18 and the metal cap 33 may not be made of metal.
 本発明は、コネクタに有用であり、特に、高いSN比を得ることができるコネクタを提供することができる点において優れている。 The present invention is useful for connectors, and is particularly excellent in that a connector capable of obtaining a high S / N ratio can be provided.
 1 コネクタ
 10 プラグ
 12 受光素子
 13 プラグ本体
 15 封止樹脂
 16a,16b 外部電極
 17 フェルール
 18 金属部材
 19a,19b 端子部
 20 レセプタクル
 21 レセプタクル本体
 23a,23b ばね端子
 25 絶縁部
 29 固定部材
 30 電気回路部
 31 回路素子
 32 IC
 33 金属キャップ
 40 回路基板
 41 孔
 43 実装面
 50 光ファイバ
 52 被覆
 54 芯線
 70~73 保持部材
 80~83 凹部
 100 送受信システム
DESCRIPTION OF SYMBOLS 1 Connector 10 Plug 12 Light receiving element 13 Plug main body 15 Sealing resin 16a, 16b External electrode 17 Ferrule 18 Metal member 19a, 19b Terminal part 20 Receptacle 21 Receptacle main body 23a, 23b Spring terminal 25 Insulation part 29 Fixing member 30 Electric circuit part 31 Circuit element 32 IC
33 Metal cap 40 Circuit board 41 Hole 43 Mounting surface 50 Optical fiber 52 Coating 54 Core wire 70 to 73 Holding member 80 to 83 Recess 100 Transmission / reception system

Claims (10)

  1.  光ファイバの一端に設けられるプラグと、
     前記プラグが上方から装着されるレセプタクルと、
     電気回路部と、
     前記電気回路部及び前記レセプタクルが実装される回路基板と、
    を備えており、
     前記プラグは、
      プラグ本体と、
      前記プラグ本体に設けられ、前記光ファイバから出力されてきた光信号を電気信号に変換する受光素子と、
      前記プラグ本体の側面に設けられ、前記受光素子と電気的に接続されている第1の外部電極と、
     を含んでおり、
     前記レセプタクルは、
      前記プラグが上方から装着される開口が設けられているレセプタクル本体と、
      前記プラグが前記開口内に装着された際に、前記第1の外部電極と接触する第2の外部電極と、
     を含んでおり、
     前記電気回路部は、
      前記第2の外部電極と電気的に接続されており、かつ、前記受光素子から出力されてくる電気信号を増幅する増幅回路を、
     含んでおり、
     前記第1の外部電極又は前記第2の外部電極のいずれか一方は、該第1の外部電極又は該第2の外部電極のいずれか他方に対して圧接するばね端子であること、
     を特徴とするコネクタ。
    A plug provided at one end of the optical fiber;
    A receptacle to which the plug is mounted from above;
    An electric circuit section;
    A circuit board on which the electrical circuit unit and the receptacle are mounted;
    With
    The plug is
    A plug body;
    A light receiving element that is provided in the plug body and converts an optical signal output from the optical fiber into an electrical signal;
    A first external electrode provided on a side surface of the plug body and electrically connected to the light receiving element;
    Contains
    The receptacle is
    A receptacle body provided with an opening for mounting the plug from above;
    A second external electrode that contacts the first external electrode when the plug is installed in the opening;
    Contains
    The electrical circuit section is
    An amplification circuit that is electrically connected to the second external electrode and that amplifies an electrical signal output from the light receiving element;
    Including
    Either the first external electrode or the second external electrode is a spring terminal that is in pressure contact with the other of the first external electrode or the second external electrode;
    Features a connector.
  2.  光ファイバの一端に設けられるプラグと、
     前記プラグが上方から装着されるレセプタクルと、
     電気回路部と、
     前記電気回路部及び前記レセプタクルが実装される回路基板と、
    を備えており、
     前記プラグは、
      プラグ本体と、
      前記プラグ本体に設けられ、前記電気回路部から出力されてきた電気信号を光信号に変換し、前記光ファイバに出力する発光素子と、
      前記プラグ本体の側面に設けられ、前記発光素子と電気的に接続されている第1の外部電極と、
     を含んでおり、
     前記レセプタクルは、
      前記プラグが上方から装着される開口が設けられているレセプタクル本体と、
      前記プラグが前記開口内に装着された際に、前記第1の外部電極と接触する第2の外部電極と、
     を含んでおり、
     前記電気回路部は、
      前記第2の外部電極と電気的に接続されており、かつ、前記発光素子へ出力する電気信号を生成する駆動回路を、
     含んでおり、
     前記第1の外部電極又は前記第2の外部電極のいずれか一方は、該第1の外部電極又は該第2の外部電極のいずれか他方に対して圧接するばね端子であること、
     を特徴とするコネクタ。
    A plug provided at one end of the optical fiber;
    A receptacle to which the plug is mounted from above;
    An electric circuit section;
    A circuit board on which the electrical circuit unit and the receptacle are mounted;
    With
    The plug is
    A plug body;
    A light emitting element provided in the plug body, for converting an electric signal output from the electric circuit unit into an optical signal, and outputting the optical signal to the optical fiber;
    A first external electrode provided on a side surface of the plug body and electrically connected to the light emitting element;
    Contains
    The receptacle is
    A receptacle body provided with an opening for mounting the plug from above;
    A second external electrode that contacts the first external electrode when the plug is installed in the opening;
    Contains
    The electrical circuit section is
    A drive circuit that is electrically connected to the second external electrode and generates an electrical signal to be output to the light emitting element;
    Including
    Either the first external electrode or the second external electrode is a spring terminal that is in pressure contact with the other of the first external electrode or the second external electrode;
    Features a connector.
  3.  前記開口は、長方形状をなしており、
     前記第2の外部電極は、
     上方から見たときに、U字状をなしている前記ばね端子であり、
      前記開口の第1の辺に沿って延在している第1のばね部材及び第2のばね部材と、
      前記第1のばね部材の一端と前記第2のばね部材の一端とを接続する折り返し部と、
      前記第2のばね部材の他端に接続され、前記回路基板に接続される固定部と、
      前記第1のばね部材の他端に接続され、前記第1の外部電極に接触する接触部と、
     によって構成されており、
     前記折り返し部の先端は、上方から見たときに、前記第1の辺に直交する第2の辺よりも前記開口に対して外側に位置していること、
     を特徴とする請求項1または請求項2のいずれかに記載のコネクタ。
    The opening has a rectangular shape,
    The second external electrode is
    The spring terminal is U-shaped when viewed from above,
    A first spring member and a second spring member extending along a first side of the opening;
    A folded portion connecting one end of the first spring member and one end of the second spring member;
    A fixing portion connected to the other end of the second spring member and connected to the circuit board;
    A contact portion connected to the other end of the first spring member and in contact with the first external electrode;
    Consists of
    The tip of the folded portion is located on the outside of the opening with respect to the second side perpendicular to the first side when viewed from above;
    The connector according to claim 1 or 2, wherein
  4.  前記接触部の端部は、水平方向であって前記光ファイバと直交する方向から見たときに、逆U字状をなし、前記プラグと接触していること、
     を特徴とする請求項3に記載のコネクタ。
    The end of the contact portion is in a reverse U shape when viewed from a direction that is horizontal and orthogonal to the optical fiber, and is in contact with the plug,
    The connector according to claim 3.
  5.  前記レセプタクルは、
      前記第2の外部電極を前記レセプタクル本体に固定する絶縁部材を、
     更に含んでいること、
     を特徴とする請求項1ないし請求項4のいずれかに記載のコネクタ。
    The receptacle is
    An insulating member for fixing the second external electrode to the receptacle body;
    Including further,
    The connector according to any one of claims 1 to 4, wherein:
  6.  上方から見たときに、前記第2の外部電極と、光ファイバが延在している方向に対して線対称に構成されている第3の外部電極を、
     更に備えていること、
     を特徴とする請求項1ないし請求項5のいずれかに記載のコネクタ。
    When viewed from above, the second external electrode and the third external electrode configured symmetrically with respect to the direction in which the optical fiber extends,
    More
    The connector according to any one of claims 1 to 5, wherein:
  7.  前記レセプタクル本体は、上方から見たときに、前記プラグの周囲を囲む形状をなしていること、
     を特徴とする請求項1ないし請求項6のいずれかに記載のコネクタ。
    The receptacle body has a shape surrounding the plug when viewed from above;
    The connector according to any one of claims 1 to 6, wherein:
  8.  前記電気回路部は、
      前記増幅回路を覆う金属キャップを、
     更に含んでいること、
     を特徴とする請求項1または請求項7のいずれかに記載のコネクタ。
    The electrical circuit section is
    A metal cap covering the amplifier circuit,
    Including further,
    The connector according to claim 1, wherein:
  9.  前記金属キャップと前記レセプタクル本体とは、一体となっていること、
     を特徴とする請求項8に記載のコネクタ。
    The metal cap and the receptacle body are integrated;
    The connector according to claim 8.
  10.  前記第1の外部電極は、前記ばね端子であり、
     該第1の外部電極の端部は、水平方向であって前記光ファイバと直交する方向から見たときに、U字状をなし、前記レセプタクルと接触していること、
     を特徴とする請求項1ないし請求項9のいずれかに記載のコネクタ。
    The first external electrode is the spring terminal;
    An end of the first external electrode is U-shaped when viewed from a direction that is horizontal and orthogonal to the optical fiber, and is in contact with the receptacle;
    10. The connector according to any one of claims 1 to 9, wherein:
PCT/JP2011/077358 2011-01-13 2011-11-28 Connector WO2012096062A1 (en)

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WO2018078676A1 (en) * 2016-10-31 2018-05-03 キヤノンアネルバ株式会社 X-ray generator and radiography system
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TW201243409A (en) 2012-11-01
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JP5556905B2 (en) 2014-07-23

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