WO2008150523A2 - Wire-to-board connector with detect capabilities - Google Patents

Wire-to-board connector with detect capabilities Download PDF

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Publication number
WO2008150523A2
WO2008150523A2 PCT/US2008/006991 US2008006991W WO2008150523A2 WO 2008150523 A2 WO2008150523 A2 WO 2008150523A2 US 2008006991 W US2008006991 W US 2008006991W WO 2008150523 A2 WO2008150523 A2 WO 2008150523A2
Authority
WO
WIPO (PCT)
Prior art keywords
connector
housing
portions
fitting
engagement
Prior art date
Application number
PCT/US2008/006991
Other languages
French (fr)
Other versions
WO2008150523A3 (en
Inventor
Toshihiro Niitsu
Yuichi Hasegawa
Original Assignee
Molex Incorporated
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 Molex Incorporated filed Critical Molex Incorporated
Priority to KR1020097027622A priority Critical patent/KR101162961B1/en
Publication of WO2008150523A2 publication Critical patent/WO2008150523A2/en
Publication of WO2008150523A3 publication Critical patent/WO2008150523A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling
    • H01R13/641—Means for preventing incorrect coupling by indicating incorrect coupling; by indicating correct or full engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6271—Latching means integral with the housing
    • H01R13/6273—Latching means integral with the housing comprising two latching arms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/79—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures

Definitions

  • the present invention relates to a connector with means for detecting complete connections.
  • a fitting detectable connector has been widely used, which is provided with a detecting switch capable of detecting completion of fitting thereof with a counterpart connector, so that no malfunction occurs during the stages of inspecting, assembling and so on of the apparatus and instruments (refer to, for example, the Japanese patent application Laid-open (Kokai) H9- 106858).
  • FIG. 9 is a cross-sectional view of a conventional fitting detectable connector.
  • Reference numeral 901 designates a plug connector, which has a housing 911 and terminals 961 to which an end of a cable 991 is connected.
  • 801 designates a receptacle connector having a housing 811 and terminals 861, and mounted on a non-illustrated substrate. The terminals 861 are supported by supporting member 831.
  • both terminals 961 and 861 come into contact with each other while producing an electric connection therebetween, so that the cable 991 is electrically conducted with a trace or traces of the substrate.
  • the plug connector 901 has a flexible lock-purpose arm 951 integrally made of conductive metallic material.
  • the flexible locking-purpose arm 951 is fixedly secured, at its base portion, to the upper surface of the housing 911 and is provided with an engaging aperture 952 formed in an intermediate portion thereof, a unlocking-purpose pressing portion 953 formed in a free end thereof, and a pair of short-circuiting-purpose contacting portions 954 arranged at positions close to the engaging aperture 952 in such a manner that the two short-circuiting-purpose contacting portions 954 are mutually spaced apart in a width direction, namely, in a direction vertical to the sheet surface of the drawing figure.
  • the receptacle connector 801 is provided with a locking-purpose protrusion 815 formed in a frontmost end of an upper wall of the housing 811 , and a pair of fitting-detecting purpose electrodes 851 which are arranged to be mutually spaced apart in a width direction, namely in a direction vertical to the sheet surface of the drawing figure.
  • the above-mentioned locking-purpose protrusion 815 is formed, at its lowermost end, with a tapered engagement guide surface, and the fitting-detecting purpose electrodes 851 are connected to a fitting detection device via the conductive trace of the substrate.
  • the locking-purpose protrusion 815 of the housing 811 is engaged in the engaging aperture 952 of the flexible locking-purpose arm 951 , so that the flexible locking-purpose arm 951 is locked, and as a result, the fitting engagement of the plug connector 901 with the receptacle connector 801 is prevented from being disengaged and disconnected. Further, the flexible lock-purpose arm 951 moves up due to its elastic property, and respective of the short-circuiting-purpose contacting portions 954 come into contact with the corresponding fitting-detecting purpose electrodes 851.
  • the flexible locking-purpose arm 951 per se is needed to be formed to have a large width shape, resulting in becoming difficult in the manufacture thereof accompanied by an increase in the production cost.
  • the present invention has its object to solve the above-mentioned problems encountered by the fitting detectable connector according to the prior art and to provide a fitting detectable connector in which auxiliary metallic mounting bracket members mounted on both sides of a housing of a first connector are engaged with a pair of second locking portions arranged on a housing of a second connector in order to bring both connectors into a fitted state and are also used as fitting-detection purpose electrodes, and additionally, due to an arrangement of a short-circuiting purpose continuous member at a position adjacent to a pair of second locking portions, it is possible to implement a stable detection of an engagement of the first and second connectors, to achieve simplification in the entire configuration, and to facilitate easy production of the fitting detectable connector while enabling it to reduce the production cost thereof.
  • a fitting detectable connector comprises: a first connector mounted on a substrate and provided with a first housing; and first terminals mounted in the first housing; and a second connector adapted for being fitted with the first connector and provided with a second housing and second terminals mounted in the second housing to be capable of being connected to the first terminals, wherein the first connector is provided, on the first housing thereof, with a pair of auxiliary metallic mounting bracket members, each having a first locking portion formed therein with an electrode portion, the second connector is provided, on the second housing, with a pair of second locking portions, and a short-circuiting purpose member of which at least both ends are arranged adjacent to the second locking portions, respectively, and when the first connector and the second connector are fitted together, the first locking portions and the second locking portions are brought into engagement with each other to permit the electrode portions to come into contact with the short-circuiting purpose member thereby allowing the pair of auxiliary metallic mounting bracket members to be conducted via the short-circuiting purpose member.
  • each of the auxiliary metallic mounting bracket members is provided with a mounting portion mounted on the first housing, a fixed portion secured to the substrate and a cantilever-like arm being provided as the first locking portion and having a base portion secured to the mounting portion and a free end side formed therein with an engaging portion and the electrode portion.
  • the first housing is provided with an insertion aperture opening in a confronting face which confronts the second connector
  • the second housing is provided with a plugging portion to be inserted in the insertion aperture
  • the first locking portion is provided with the engaging portion formed in the free end side to be located on a side of an insertion direction of the second connector
  • the electrode portion located on a side of a withdrawing direction of the second connector from the engaging portion
  • the second locking portions are comprised of a raised portion, respectively, formed in the plugging portion, and are respectively formed with an engaging portion located on a side of the withdrawing direction of the second connector
  • the short-circuiting purpose member is arranged to be located on a side of the withdrawing direction from the engaging portion.
  • the afore-mentioned short-circuiting purpose member has an extension portion formed to extend over a portion from a second locking portion forming surface of the plugging portion to the engaging portion of the second locking portion.
  • the auxiliary metallic mounting bracket members are arranged on opposite sides of the first housing, the first locking portions are arranged at positions adjacent to the opposite ends of the first housing, and the second locking portions are formed in respective portions located in the vicinity of opposite ends of the second housing.
  • the fitting detectable connector employs the auxiliary metallic mounting bracket members formed with the first locking portions respectively mounted on the housing of the first connector, as electrodes for the engagement detection, and the short-circuiting purpose member which interconnects the pair of the second locking portions arranged on the housing of the second connector is disposed.
  • FIG. 1 is a perspective view of a connector constructed in accordance with the principles of the present invention, illustrating a state thereof prior to the engagement;
  • FIG. 2 are three views of the connector of FIG. 1 ;
  • FIG. 3 is an exploded view of the substrate connector of FIG 1 ;
  • FIG. 4 are three views of the wire connector of FIG. 1 , a top view in FIG. 4 A, a front view in FIG. 4B, and a side view in FIG. 4C;
  • FIG 5 is an end view illustrating a fitted state of the substrate connector and the wire connector
  • FIG. 6 is a cross-sectional view of the connectors of FIG. 5 in a partly fitted state, taken along line A-A thereof;
  • FIG. 7 is a cross-sectional view of connector of FIG. 5 completely fitted together and taken along line A-A thereof;
  • FIG. 8 is a cross-sectional view taken along line A-A of FIG. 5, and illustrating states of the fitting together of the substrate connector and the wire connector, in which FIGS. 8B and 8C are enlarged views of the portion "B" indicated in FIG. 8 A, respectively; and,
  • FIG. 9 is a cross-sectional view of a conventional fitting detectable connector.
  • 1 designates a substrate connector configured as a fist connector of the fitting detectable connector according to the present embodiment, and adapted for being mounted on a circuit board.
  • 101 designates a wire connector configured as a second connector of the fitting detectable connector according to the present embodiment, and is connected to an end of a cable having therein a plurality of electric wires 191.
  • the wire connector 101 is used for electrically connecting the cable to the substrate connector 1.
  • the wire connector 101 may be used as one not only for connecting the cable provided with the electric wires 191 having a circular cross- section, respectively, as shown in the described drawing figures, but also for connecting a flat plate-like flexible cable, such as a flexible flat cable (FFC), a flexible printed circuit (FPC), and so on to a counter-side connector.
  • the described fitting detectable connector is suited for being typically used for connecting an electronic control unit as generally abbreviated as "ECU” suitable for controlling, for example, a vehicular air-bag system, an engine, an automatic transmission as generally abbreviated as "AT”, an anti-lock braking system as generally abbreviated as "ABS” and the like, but may be one employed for any other utilization.
  • the substrate connector 1 corresponds to a receptacle connector and is adapted for being fitted with the wire connector 101.
  • the substrate connector 1 is provided with a housing 11 integrally made of an insulating material such as synthetic resin material to form a first housing, and a terminal or terminals 61 , each being made of a good electrically conductive material such as a metal and the like to form a first terminal or terminals each of which is mounted in a manner such that it penetrate through a back wall portion 19 of the housing 11.
  • Each of the terminals 61 is provided with a tail portion 62 formed to be connectable to a conductive trace, a connecting pad or the like which is formed in a circuit board by means of a suitable connecting means such as solder or the like, a grasped portion 63 adapted for being press-fitted in the back wall portion 19 of the housing 11 to be fixedly held there, and a contacting portion 64 which is formed to extend into an insertion aperture 13 of the housing 11 thereby being capable of come into contact with a counterpart terminal (not shown in the drawing figures) that is provided for the wire connector 101.
  • the terminals 61 are comprised often terminals arranged to form a single row while being separated apart from one another by a predetermined spacing, i.e., a predetermined pitch.
  • a predetermined spacing i.e., a predetermined pitch.
  • the number, the pitch, and the row-number of the terminals 61 may be optionally varied, and therefore, the terminals 61 may be arranged to form two or more liner rows.
  • the housing 11 is a box-like member formed, in its outer shape, in a flattened and substantially rectangular parallelepiped shape, and is thus provided with an upper wall portion 12 formed as a strip-like rectangular wall portion extended in a breadthwise direction, a lower wall portion 16 formed as a strip-like rectangular wall extending in a breadthwise direction and confronting the upper wall portion 12, and side wall portions 17 integrally connected to the opposite ends of the above-mentioned upper and lower wall portions 12 and 16.
  • the upper wall portion 12, the lower wall portion 16 and the side wall portions 17 define a region surrounding the insertion aperture 13 which is opened in a face confronting the wire connector 101.
  • the side wall portions 17 on both sides are provided with a guide groove 21 , respectively, which is formed so as to be communicated with each of the opposite ends of the insertion aperture 13. It should be noted that an opposite face that located on a side opposite to the afore-mentioned confronting face in which the insertion aperture 13 is formed is closed by the back wall portion 19.
  • the substrate connector 1 is a so-called right-angle type connector, and accordingly is mounted on the afore-mentioned circuit board at its attitude directed sideways, so that a bottom face of the substrate connector 1, which can be seen in FIGS. 2B and 2C, is eventually in contact with a surface of the circuit board.
  • the above-mentioned insertion aperture 13 is extended to be in parallel with the surface of the circuit board while allowing the back wall portion 19 to stand upright in a state approximately vertical to the circuit board.
  • the above-mentioned substrate connector 1 should not be limited to the described right- angle type, and may be a straight type connector.
  • the above-mentioned insertion aperture 13 will be opened upwards, and therefore will be extended perpendicularly to the circuit board. Furthermore, the mounting will be achieved in a manner such that the back wall portion 19 either comes in contact with or confronts the surface of the circuit board. For the brevity sake in the explanation, a description will be provided with respect to the case of so-called right-angle type connector.
  • a metallic bracket-accommodating groove 14 is formed in an outer portion of the guide groove 21 of each of the side wall portions 17, and a nail 81 formed as an auxiliary metallic mounting bracket member is press-fitted in the metallic bracket-accommodating groove 14 to be fixedly secured to the housing 11.
  • the nail 81 is a metallic member integrally formed of a conductive metallic plate shaped in a substantially crank-form by bending the metallic plate, and is provided with a mounting portion 82 which is mounted in the metallic bracket-accommodating groove 14 by press-fitting, a fixed portion 83 extending vertically from the lower edge of the mounting portion 82 and having a lower face thereof secured to the afore-mentioned connecting pad formed on the circuit board by means of securing means such as soldering or the like, and an arm portion 84 extending perpendicularly from an uppermost edge of the mounting portion 82 and being capable of functioning as a first locking portion.
  • the arm portion 84 is provided, at its extreme free end, with an electrode portion 84a which is capable of contacting a conductive band 151.
  • the above-mentioned upper wall portion 12 is formed with a pair of engagement recesses 15, and a pair of arm-accommodating recesses 18, which are formed to provide communication between the pair of engagement recesses 15 and metallic bracket- accommodating grooves 14.
  • the above-mentioned engagement recesses 15 are provided for allowing engagement-purpose raised portions 115 formed in the wire connector 101 to enter therein, so that when the engagement-purpose raised portions 115 are engaged by the arm portions 84 of the nail 81, the former portions are surely prevented from being in no contact with the upper wall portion 12.
  • each of the engagement recesses 15 and each of the arm-accommodating recesses 18 are formed to penetrate through the upper wall portion 12 in a thickness direction thereof.
  • the engagement recesses 15 and the arm- accommodating recesses 18 are not necessarily requested to be formed to penetrate through the upper wall portion 12, and might be formed so that both recesses 15 and 18 are concavely recessed in the lower face and the upper surface of the upper wall portion 12, respectively.
  • the arm portions 84 provided as the first locking portions are arranged at respective positions adjacent to the opposite side wall portions 17 which are mutually opposed in a longitudinal direction of the substrate connector 1, and are provided as breadthwise opposite ends of the substrate connector 1.
  • the arm portions 84 are arranged at positions corresponding to respective intermediate positions located between first and second terminals 61 from both right and left ends of the substrate connector 1.
  • the arm portions 84 of the above- mentioned nails 81 are accommodated in the arm-accommodating recesses 18, and the electrode portions 84a, which are provided at the free ends of the arm portions 84 are arranged to be received in the penetratingly formed engagement recesses 15 and are exposed to the interior of the insertion apertures 13.
  • the afore-mentioned wire connector 101 corresponds to a plug connector and is provided with a counterpart housing 111 formed as a second housing integrally formed of an insulating material such as synthetic resin or the like and is adapted for being fitted in the above-mentioned substrate connector 1 , and non-illustrated counterpart terminals provided as second terminals, each being made of a good electrically conductive material such as a metallic material or the like, and are mounted in the counterpart housing 111.
  • the counterpart housing 111 is a thick-plate-like member, which has a flattened and strip-like rectangular outer shape and is formed to be extended in a breadthwise direction.
  • the counterpart housing 111 is provided with a plugging portion 113 to be inserted in the insertion aperture 13 of the substrate connector 1 , and a flange portion 114 formed to be joined together with the plugging portion 113 on a side opposite to a confronting face 113a in the plugging portion 113, which confronts the substrate connector 1.
  • the counterpart housing 111 is further provided with a plurality of terminal receipt holes 116, which are formed to penetrate through both the plugging portion 113 and the flange portion 114 and to be extended in a direction in which the counterpart housing 111 is inserted into and withdrawn from the afore-mentioned insertion aperture 13, namely, in a insertion/withdrawn direction of the counterpart housing 111.
  • the terminal receipt holes 116 are permitted to receive therein counterpart terminals in a manner such that each hole holds therein a single piece of terminal. Further, in the terminal receipt holes 116, end portions of electric wires 191, which are connected to the counterpart electrodes are received one by one.
  • the contacting portions 64 of the terminals 61 are allowed to come into the terminal receipt holes 116 via openings thereof formed in a face of the plugging portion 113 that faces the substrate connector 1 to come into contact with the counterpart terminals thereby achieving physical connection therebetween.
  • the terminal receipt holes 116 are arranged such that the number thereof is the same as those of the terminals 61, and that they are similarly arranged in a raw at a pitch identical to that of the raw of the terminals 61. In the illustrated embodiment, ten lengthy terminal receipt holes 116 are arranged in a raw while maintaining thereamong a spacing corresponding to a predetermined pitch.
  • the plugging portion 113 has two laterally spaced side walls 113c of which respective portions located close to the afore-mentioned confronting face 113a are provided with guide protrusions 121 formed there to be protruded outwards.
  • the guide protrusions 121 are adapted for being inserted into the guide grooves 21 formed at ends of the insertion aperture 13.
  • an upper surface 113b of the plugging portion 113 which is provided as a surface to form a second locking portion is provided with the pair of upwardly projecting engagement-purpose raised portions 115 formed to be laterally separated away from one another.
  • the engagement-purpose raised portions 115 are provided as raised portions engaged with the arm portions 84 equipped for the respective nails 81 that fixedly secure the substrate connector 1 to a substrate in a state where the substrate connector 1 and the wire connector 101 are fitted together to achieve engagement therebetween, and thus the engagement-purpose raised portions 115 can function as the second locking portion.
  • the engagement-purpose raised portions 115 are desirably provided at positions located adjacent to the side walls 113c of the plugging portion 113, and therefore, in the illustrated embodiment, the respective raised portions 115 are formed in respective positions corresponding to two intermediate positions, each being situated intermediately between the first and second terminals 61 from one of the right and left opposite ends.
  • each of the engagement-purpose raised portions 115 is formed to have a triangle shape in its side view while offering, in its top face, a tapered surface 115a formed at a position relatively coming closer to the confronting face 113 a, so as to be gently sloped in a direction of the afore-mentioned insertion/withdrawal direction, and also an engagement surface 115b formed at a position relatively coming closer to the afore-mentioned flange portion 114, so as to be steeply inclined or directed vertically with respect to the insertion/withdrawal direction.
  • the afore-mentioned plugging portion 113 is provided with the conductive band 151, which is disposed on the upper surface 113b to function as a short- circuiting purpose member interconnecting the two engagement-purpose raised portions 115 laterally separated away from one another.
  • the conductive band 151 is a narrow strip-like member made of a good electrically conductive material such as a metallic material or the like, and is provided for being extended in a width direction of the plugging portion 113, so that opposite ends thereof are arranged at positions in the vicinity of the respective sides of the two engagement-purpose raised portions 115, which are located closer to the flange portion 114.
  • the opposite ends of the conductive band 151 are arranged so as to be in contact with the electrode portions 84a of the nails 81 in the state where the substrate connector 1 and the wire connector 101 are fitted together to achieve engagement therebetween.
  • the substrate connector 1 and the wire connector 101 complete the fitting engagement thereof at a position where end edges 84b of both arm portions 84, which are provided on the respective sides directed towards both engagement recesses 15, come into engagement with root portions 115c which are provided as boundaries between respective of the engagement-purpose raised portions 115 and the upper surface 113b.
  • the conductive band 151 is disposed on the upper surface 113b at a position thereof located adjacent to the engagement-purpose raised portions 115 and belonging to the withdrawal direction side, and since the electrode portions 84a are arranged on the withdrawal direction side relative to the above-mentioned end edges 84b, the electrode portions 84a can come into contact with the conductive band 151 when the end edges 84b are brought into engagement with the root portions 115c, namely, when the fitting engagement of both connectors 1 and 101 comes to completion.
  • the conductive band 151 is not necessarily required to be in contact with the root portions 115c, as shown in FIG 8B with respect to which a description will be provided later, and will be adequate if it were disposed at a position where it is able to be in contact with the electrode portions 84a when the end edges 84b come into engagement with the root portions 115c.
  • the opposite ends of the above-mentioned conductive band 151 may be formed in such a manner that as shown in FIG. 8C with respect to which a description will be provided later, a part of each end of the conductive band 151 comes to lean against the engagement surface 115b of each engagement- purpose raised portion 115.
  • the conductive band 151 disposed on the upper surface 113b of the plugging portion 113 is provided with an extension portion 151a extended toward the engagement surface 115b, as shown in FIG.
  • the extension portion 151a can enforce the root portion 151c, and therefore, when the wire connector 101 is withdrawn from the substrate connector 1 in the fitted state, it is possible to prevent each engagement-purpose raised portion 115 from being damaged due to tight pinching of the root portion 115c thereof by the arm portion 84 of the cooperating nail 81.
  • the arm portion 84 and the conductive band 151 meet one another before the end edge 84b engages with the root portion 115c. Nevertheless, there is no particular problem as long as the length of fitting of both connectors is sufficient.
  • the engagement surface 115b is formed to have a relatively steep inclination or approximately right angle against the upper surface 113b, the arm portion 84 will be moved to pass through the engagement surface 115b for a short space of time during the fitting operation, and therefore, the end edge 84b will engage with the root portion 115c.
  • the above-mentioned conductive band 151 may be either a metallic membrane formed on the upper surface of the plugging portion 113 by means of plating, depositing, coating and the like, or may be a metallic thin plate, a metallic film, a conductive resin plate or the like, which is secured by means of gluing, screwing or the like. Further, the above-mentioned conductive band 151 may be a metallic plate, a metallic film or a conductive resin plate formed integrally with the plugging portion 113 by the use of a molding method including an over-molding, coinjection molding and the like.
  • the afore-mentioned nail 81 is connected to a non- illustrated fitting detection device, which is a device that is provided for detecting a fitting condition of the substrate connector 1 and the wire connector 101 on the basis of a conduction condition between the pair of nails 81 mounted on the housing 11 to be laterally spaced apart from one another.
  • the fitting detection device detects completion of fitting engagement of the substrate connector 1 and the wire connector 101.
  • this fitting detection device may be mounted on a substrate on which, for example, the substrate connector 1 is mounted, and are electrically connected to connecting pads or the like to which the fixed portions 83 of the respective nails 81 are secured via conductive traces of the substrate.
  • the extreme ends of the contacting portions 64 of the terminals 61 of the substrate connector 1 are moved into the terminal receipt holes 116 of the wire connector 101, to thereby start contacting with the counterpart terminals accommodated in the terminal receipt holes 116.
  • the engagement-purpose raised portions 115 have not yet been engaged with the arm portions 84 of the pair of nails 81.
  • the substrate connector 1 and the wire connector 101 are further allowed to approach together so that the plugging portion 113 of the wire connector 101 is urged to advance inwardly into the interior of the insertion aperture 13 of the substrate connector 1, and as a result, as best illustrated in FIG. 7, the engagement-purpose raised portions 115 come into abutment against the lower face of the respective electrode portions 84a of the nails 81.
  • the engagement-purpose raised portions 115 will first abut against an entrance side (on the right side in FIG. 7) of the insertion aperture 13 in the upper wall portion 12 of the housing 11, that is to say, against a portion located close to the confronting face.
  • the engagement-purpose raised portions 115 can smoothly pass therethrough.
  • the arm portions 84 of the nails 81 are made of a metallic plate having elasticity and is formed as a cantilever member fixedly mounted at its base portion on the mounting portion 82, the electrode portions 84a being formed as the free ends of the nails 81 will be moved up by the engagement-purpose raised portions 115 as soon as the electrode portions 84a come into engagement with the engagement- purpose raised portions 115 to be elastically displaced upwardly.
  • the plugging portion 113 of the wire connector 101 is allowed to further advance into the interior of the insertion aperture 13 of the substrate connector 1, the fitting of the substrate connector 1 and the wire connector 101 is completed as illustrated in FIG. 8A.
  • the plugging portion 113 is moved leftward in FIG. 8A, the respective engagement-purpose raised portions 115 enter into the associated engagement recesses 15.
  • the arm portions 84 of the respective nails 81 are elastically displaced downwardly, as illustrated in FIG. 8 A, due to the elasticity of the arm portions 84, which urges a restoring motion of the arm portions 84 toward the initial attitude before displacement, and therefore, the end edges 84b are abutted against the root portions 115c of the engagement-purpose raised portions 115.
  • each of the engagement-purpose raised portions 115 on both sides are engaged with the associated arm portions 84 to be clamped there. Therefore, each of the engagement- purpose raised portions 115 is prohibited to move any longer in the rightward of FIG 8A, with respect to the arm portion 84. Accordingly, the substrate connector 1 and the wire connector 101 are locked in the state where both are fitted together, and are surely prevented from being unnecessarily disengaged against will.
  • the electrode portion 84a of each nail 81 is brought into tight contact with the conductive band 151 disposed on the upper surface of the plugging portion 113.
  • the pair of nails 81 mounted on the housing 11 to be laterally spaced apart from one another are in electrically connected together via the conductive band 151 and therefore, the afore-mentioned fitting detection device connected to the above-mentioned nails 81 detects completion of fitting engagement of the substrate connector 1 and the wire connector 101.
  • the electrode portions 84a of the nails 81 are elastically pressed against the conductive band 151 due to its own elasticity, contacting state of the electrode portions 84a with the conductive band 51 can be stably maintained.
  • the arm portions 84 of the nails 81 can basically function as a locking member to lock the substrate connector 1 and the wire connector 101 at the mutual fitting-state thereof through an abutting-engagement of the arm portions 84 with the engagement-purpose raised portions 115.
  • the arm portions 84 of the nails 81 are made of metallic material, these arm portions 84 can be highly resistive against thermal deformation even if the substrate connector 1 and the wire connector 101 are used under a high temperature environment, and as a result, the fitting-state of the substrate connector 1 and the wire connector 101 can be stably maintained at the locking state thereof for a long period of time.
  • the locking member that abuts against and engaged with the respective engagement-purpose raised portions 115 is formed of synthetic resin material or the like that is similar to the material of which the housing 11 is made, when the locking member is used for a long time under a temperature environment as high as approximately 100( 0 C), it is often subjected to a plastic deformation due to creep caused by application of heat and therefore, release of locking of the above-mentioned fitting engagement between the two connectors 1 and 101 might possibly occur.
  • the arm portions 84 of the nails 81 made of metallic material are employed for functioning as the locking member, the creep due to application of heat can be avoided ensuring a long maintenance of stable locking of the fitting engagement.
  • the housing 11 is provided with the pair of nails 81, which are respectively provided with the electrode portion 84a disposed in the engagement recess 15 or arranged adjacent to the engagement recess 15, and as the counterpart housing 111 is provided with the pair of engagement-purpose raised portions 115 and the conductive band 151 juxtaposed with or arranged adjacent to the engagement-purpose raised portions 115, when the substrate connector 1 and the wire connector 101 are fitted together while establishing the fitted engagement of both connectors, the mutual engagement of the engagement recesses 15 and the engagement-purpose raised portions 115 and the mutual contact of the electrode portion 84a and the conductive band 151 occur to produce electric conduction between the pair of nails 81 and the conductive band 151.
  • the structure as well as the configuration of each of the substrate and wire connectors 1 and 101 can be simple resulting in facilitating the easy production thereof and the reduction in the production cost thereof.
  • the nails 81 are mounted on the laterally spaced two sides of the housing 11, the engagement recesses 15 are formed at the positions in the vicinity of the laterally opposite ends of the housing 11 , and the engagement-purpose raised portions 115 are formed in the positions close to both of the laterally opposite sides of the counterpart housing 111. Therefore, even though the substrate connector 1 and the wire connector 101 are provided with a broad and flattened shape, respectively, it is possible to detect the fitting connection performed at positions in the vicinity of the breadthwise ends and might often easily become incomplete fitting by use of the nail 81.
  • the present invention is not limited to the above-described embodiments, and may be changed in various ways based on the gist of the present invention, and these changes are not eliminated from the scope of the present invention.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
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Abstract

A wire to board connector with a mating detection feature includes a male wire connector (101) that is received by a female board connector (1). The housing (111) of the wire connector (101) has conductive portions (151) disposed thereon by conductive plating or other means. The female receptacle connector (1) is provided with one or more conductive strips, such as in the form of extensions (84) of conductive fitting nails portions (81). These conductive portions extend widthwise of the connector (1) and provide contact surfaces for the conductive portions (151) of the wire connector (101) to engage. The wire connector (101) conductive portion (151) may include raised members (115) that positively contact the extensions of the fitting nails (81) only when the wire connector (101) is fully inserted into the female connector (1).

Description

WIRE-TO-BQARD CONNECTOR WITH DETECT CAPABILITIES
BACKGROUND OF THE INVENTION
The present invention relates to a connector with means for detecting complete connections.
Previously, as for connectors to be used with diverse kinds of apparatus and instruments, a fitting detectable connector has been widely used, which is provided with a detecting switch capable of detecting completion of fitting thereof with a counterpart connector, so that no malfunction occurs during the stages of inspecting, assembling and so on of the apparatus and instruments (refer to, for example, the Japanese patent application Laid-open (Kokai) H9- 106858).
FIG. 9 is a cross-sectional view of a conventional fitting detectable connector.
Reference numeral 901 designates a plug connector, which has a housing 911 and terminals 961 to which an end of a cable 991 is connected. 801 designates a receptacle connector having a housing 811 and terminals 861, and mounted on a non-illustrated substrate. The terminals 861 are supported by supporting member 831. When the plug connector 901 is fitted with the receptacle connector 801, both terminals 961 and 861 come into contact with each other while producing an electric connection therebetween, so that the cable 991 is electrically conducted with a trace or traces of the substrate. The plug connector 901 has a flexible lock-purpose arm 951 integrally made of conductive metallic material. The flexible locking-purpose arm 951 is fixedly secured, at its base portion, to the upper surface of the housing 911 and is provided with an engaging aperture 952 formed in an intermediate portion thereof, a unlocking-purpose pressing portion 953 formed in a free end thereof, and a pair of short-circuiting-purpose contacting portions 954 arranged at positions close to the engaging aperture 952 in such a manner that the two short-circuiting-purpose contacting portions 954 are mutually spaced apart in a width direction, namely, in a direction vertical to the sheet surface of the drawing figure.
Further, the receptacle connector 801 is provided with a locking-purpose protrusion 815 formed in a frontmost end of an upper wall of the housing 811 , and a pair of fitting-detecting purpose electrodes 851 which are arranged to be mutually spaced apart in a width direction, namely in a direction vertical to the sheet surface of the drawing figure. The above-mentioned locking-purpose protrusion 815 is formed, at its lowermost end, with a tapered engagement guide surface, and the fitting-detecting purpose electrodes 851 are connected to a fitting detection device via the conductive trace of the substrate.
Thus, when the housing 911 is inserted in the housing 811 to achieve the fitting engagement between the plug connector 901 and the receptacle connector 801, the locking-purpose protrusion 815 of the housing 811 is engaged in the engaging aperture 952 of the flexible locking-purpose arm 951 , so that the flexible locking-purpose arm 951 is locked, and as a result, the fitting engagement of the plug connector 901 with the receptacle connector 801 is prevented from being disengaged and disconnected. Further, the flexible lock-purpose arm 951 moves up due to its elastic property, and respective of the short-circuiting-purpose contacting portions 954 come into contact with the corresponding fitting-detecting purpose electrodes 851. Thus, respective of the pair of fitting-detecting purpose electrodes 851 are brought into mutual conduction via the flexible lock-purpose arm 951, and therefore, completion of the fitting engagement between the plug connector 901 and the receptacle connector 801 is detected by the fitting detection device, which is connected to the fitting-detecting purpose electrodes 851. To the contrary, even when the housing 911 is inserted in the housing 811, if a fitting engagement between the plug connector 901 and the receptacle connector 801 is not completed, so that the locking-purpose protrusion 815 of the housing 811 fails to enter into the fitting aperture 952 of the flexible lock-purpose arm 951 , resulting in failure of locking of the flexible lock-purpose arm 951, the flexible lock-purpose arm 951 is pressed down by the lock-purpose protrusion 815, so that the short-circuiting-purpose contacting portion 954 is kept to be in no contact with the fitting-detecting purpose electrodes 851. Therefore, respective of the pair of fitting-detecting purpose electrodes 851 are left to be in no mutually conductive state, and thus incompletion of the fitted engagement between the plug connector 901 and the receptacle connector 801 is detected by the above-mentioned fitting detection device.
In the above-described connector of the prior art, there is necessity of a separate provision of both ordinary terminals 861 and the similarly configured fitting-detecting purpose electrodes 851 and therefore, the structure of the fitting detectable connector becomes complicated, while increasing its production cost. Further, in a case where a connector has a housing of a large width and flattened shape, either deformation of the housing made of synthetic resin material or oblique insertion of the housing will easily result in occurrence of an incomplete fitting engagement at, in particular, a portion adjacent to end portions in the width direction of the connector. Thus, if it were tried to detect the fitting of the connectors that might occur at portions adjacent to the end portions in the width direction by the use of the flexible lock-purpose arm 951, the flexible locking-purpose arm 951 per se is needed to be formed to have a large width shape, resulting in becoming difficult in the manufacture thereof accompanied by an increase in the production cost.
SUMMARY OF THE INVENTION
Therefore, the present invention has its object to solve the above-mentioned problems encountered by the fitting detectable connector according to the prior art and to provide a fitting detectable connector in which auxiliary metallic mounting bracket members mounted on both sides of a housing of a first connector are engaged with a pair of second locking portions arranged on a housing of a second connector in order to bring both connectors into a fitted state and are also used as fitting-detection purpose electrodes, and additionally, due to an arrangement of a short-circuiting purpose continuous member at a position adjacent to a pair of second locking portions, it is possible to implement a stable detection of an engagement of the first and second connectors, to achieve simplification in the entire configuration, and to facilitate easy production of the fitting detectable connector while enabling it to reduce the production cost thereof.
To achieve the above object, a fitting detectable connector according to the present invention comprises: a first connector mounted on a substrate and provided with a first housing; and first terminals mounted in the first housing; and a second connector adapted for being fitted with the first connector and provided with a second housing and second terminals mounted in the second housing to be capable of being connected to the first terminals, wherein the first connector is provided, on the first housing thereof, with a pair of auxiliary metallic mounting bracket members, each having a first locking portion formed therein with an electrode portion, the second connector is provided, on the second housing, with a pair of second locking portions, and a short-circuiting purpose member of which at least both ends are arranged adjacent to the second locking portions, respectively, and when the first connector and the second connector are fitted together, the first locking portions and the second locking portions are brought into engagement with each other to permit the electrode portions to come into contact with the short-circuiting purpose member thereby allowing the pair of auxiliary metallic mounting bracket members to be conducted via the short-circuiting purpose member.
In the fitting detectable connector according to anther embodiment of the present invention, each of the auxiliary metallic mounting bracket members is provided with a mounting portion mounted on the first housing, a fixed portion secured to the substrate and a cantilever-like arm being provided as the first locking portion and having a base portion secured to the mounting portion and a free end side formed therein with an engaging portion and the electrode portion. In the fitting detectable connector according to a further embodiment of the present invention, the first housing is provided with an insertion aperture opening in a confronting face which confronts the second connector, the second housing is provided with a plugging portion to be inserted in the insertion aperture, the first locking portion is provided with the engaging portion formed in the free end side to be located on a side of an insertion direction of the second connector, and the electrode portion located on a side of a withdrawing direction of the second connector from the engaging portion, the second locking portions are comprised of a raised portion, respectively, formed in the plugging portion, and are respectively formed with an engaging portion located on a side of the withdrawing direction of the second connector, and, the short-circuiting purpose member is arranged to be located on a side of the withdrawing direction from the engaging portion.
In the fitting detectable connector according to a still further embodiment of the present invention, the afore-mentioned short-circuiting purpose member has an extension portion formed to extend over a portion from a second locking portion forming surface of the plugging portion to the engaging portion of the second locking portion.
In the fitting detectable connector according to a further embodiment of the present invention, the auxiliary metallic mounting bracket members are arranged on opposite sides of the first housing, the first locking portions are arranged at positions adjacent to the opposite ends of the first housing, and the second locking portions are formed in respective portions located in the vicinity of opposite ends of the second housing.
In accordance with the present invention, the fitting detectable connector employs the auxiliary metallic mounting bracket members formed with the first locking portions respectively mounted on the housing of the first connector, as electrodes for the engagement detection, and the short-circuiting purpose member which interconnects the pair of the second locking portions arranged on the housing of the second connector is disposed. Hence, it is possible to stably detect the engagement of the first and second connectors, and is also possible to achieve simplifying of the configuration of, facilitating of production of, and reducing in the production cost of the fitting detectable connector.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a connector constructed in accordance with the principles of the present invention, illustrating a state thereof prior to the engagement;
FIG. 2 are three views of the connector of FIG. 1 ; FIG. 3 is an exploded view of the substrate connector of FIG 1 ;
FIG. 4 are three views of the wire connector of FIG. 1 , a top view in FIG. 4 A, a front view in FIG. 4B, and a side view in FIG. 4C;
FIG 5 is an end view illustrating a fitted state of the substrate connector and the wire connector; FIG. 6 is a cross-sectional view of the connectors of FIG. 5 in a partly fitted state, taken along line A-A thereof;
FIG. 7 is a cross-sectional view of connector of FIG. 5 completely fitted together and taken along line A-A thereof; FIG. 8 is a cross-sectional view taken along line A-A of FIG. 5, and illustrating states of the fitting together of the substrate connector and the wire connector, in which FIGS. 8B and 8C are enlarged views of the portion "B" indicated in FIG. 8 A, respectively; and,
FIG. 9 is a cross-sectional view of a conventional fitting detectable connector.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
1 designates a substrate connector configured as a fist connector of the fitting detectable connector according to the present embodiment, and adapted for being mounted on a circuit board. 101 designates a wire connector configured as a second connector of the fitting detectable connector according to the present embodiment, and is connected to an end of a cable having therein a plurality of electric wires 191. The wire connector 101 is used for electrically connecting the cable to the substrate connector 1. Meanwhile, in the present embodiment, the wire connector 101 may be used as one not only for connecting the cable provided with the electric wires 191 having a circular cross- section, respectively, as shown in the described drawing figures, but also for connecting a flat plate-like flexible cable, such as a flexible flat cable (FFC), a flexible printed circuit (FPC), and so on to a counter-side connector. Furthermore, the described fitting detectable connector is suited for being typically used for connecting an electronic control unit as generally abbreviated as "ECU" suitable for controlling, for example, a vehicular air-bag system, an engine, an automatic transmission as generally abbreviated as "AT", an anti-lock braking system as generally abbreviated as "ABS" and the like, but may be one employed for any other utilization. Now, the substrate connector 1 corresponds to a receptacle connector and is adapted for being fitted with the wire connector 101. The substrate connector 1 is provided with a housing 11 integrally made of an insulating material such as synthetic resin material to form a first housing, and a terminal or terminals 61 , each being made of a good electrically conductive material such as a metal and the like to form a first terminal or terminals each of which is mounted in a manner such that it penetrate through a back wall portion 19 of the housing 11. Each of the terminals 61 is provided with a tail portion 62 formed to be connectable to a conductive trace, a connecting pad or the like which is formed in a circuit board by means of a suitable connecting means such as solder or the like, a grasped portion 63 adapted for being press-fitted in the back wall portion 19 of the housing 11 to be fixedly held there, and a contacting portion 64 which is formed to extend into an insertion aperture 13 of the housing 11 thereby being capable of come into contact with a counterpart terminal (not shown in the drawing figures) that is provided for the wire connector 101. In the illustrated embodiment, the terminals 61 are comprised often terminals arranged to form a single row while being separated apart from one another by a predetermined spacing, i.e., a predetermined pitch. However, the number, the pitch, and the row-number of the terminals 61 may be optionally varied, and therefore, the terminals 61 may be arranged to form two or more liner rows.
The housing 11 is a box-like member formed, in its outer shape, in a flattened and substantially rectangular parallelepiped shape, and is thus provided with an upper wall portion 12 formed as a strip-like rectangular wall portion extended in a breadthwise direction, a lower wall portion 16 formed as a strip-like rectangular wall extending in a breadthwise direction and confronting the upper wall portion 12, and side wall portions 17 integrally connected to the opposite ends of the above-mentioned upper and lower wall portions 12 and 16. The upper wall portion 12, the lower wall portion 16 and the side wall portions 17 define a region surrounding the insertion aperture 13 which is opened in a face confronting the wire connector 101. The side wall portions 17 on both sides are provided with a guide groove 21 , respectively, which is formed so as to be communicated with each of the opposite ends of the insertion aperture 13. It should be noted that an opposite face that located on a side opposite to the afore-mentioned confronting face in which the insertion aperture 13 is formed is closed by the back wall portion 19.
In the present embodiment, the substrate connector 1 is a so-called right-angle type connector, and accordingly is mounted on the afore-mentioned circuit board at its attitude directed sideways, so that a bottom face of the substrate connector 1, which can be seen in FIGS. 2B and 2C, is eventually in contact with a surface of the circuit board. To this end, the above-mentioned insertion aperture 13 is extended to be in parallel with the surface of the circuit board while allowing the back wall portion 19 to stand upright in a state approximately vertical to the circuit board. At this state, it should be noted that the above-mentioned substrate connector 1 should not be limited to the described right- angle type, and may be a straight type connector. Then, the above-mentioned insertion aperture 13 will be opened upwards, and therefore will be extended perpendicularly to the circuit board. Furthermore, the mounting will be achieved in a manner such that the back wall portion 19 either comes in contact with or confronts the surface of the circuit board. For the brevity sake in the explanation, a description will be provided with respect to the case of so-called right-angle type connector.
A metallic bracket-accommodating groove 14 is formed in an outer portion of the guide groove 21 of each of the side wall portions 17, and a nail 81 formed as an auxiliary metallic mounting bracket member is press-fitted in the metallic bracket-accommodating groove 14 to be fixedly secured to the housing 11. The nail 81 is a metallic member integrally formed of a conductive metallic plate shaped in a substantially crank-form by bending the metallic plate, and is provided with a mounting portion 82 which is mounted in the metallic bracket-accommodating groove 14 by press-fitting, a fixed portion 83 extending vertically from the lower edge of the mounting portion 82 and having a lower face thereof secured to the afore-mentioned connecting pad formed on the circuit board by means of securing means such as soldering or the like, and an arm portion 84 extending perpendicularly from an uppermost edge of the mounting portion 82 and being capable of functioning as a first locking portion. The arm portion 84 is provided, at its extreme free end, with an electrode portion 84a which is capable of contacting a conductive band 151.
The above-mentioned upper wall portion 12 is formed with a pair of engagement recesses 15, and a pair of arm-accommodating recesses 18, which are formed to provide communication between the pair of engagement recesses 15 and metallic bracket- accommodating grooves 14. The above-mentioned engagement recesses 15 are provided for allowing engagement-purpose raised portions 115 formed in the wire connector 101 to enter therein, so that when the engagement-purpose raised portions 115 are engaged by the arm portions 84 of the nail 81, the former portions are surely prevented from being in no contact with the upper wall portion 12. In the described and illustrated embodiment, since both the arm portion 84 and the electrode portion 84a provided at the extreme end thereof are formed in a common flat-plate shape, each of the engagement recesses 15 and each of the arm-accommodating recesses 18 are formed to penetrate through the upper wall portion 12 in a thickness direction thereof. However, if such a configuration that the arm portions 84 can be engaged with the engagement- purpose raised portions 115 and the electrode portions 84a can be brought into contact with the conductive band 151 is employed, the engagement recesses 15 and the arm- accommodating recesses 18 are not necessarily requested to be formed to penetrate through the upper wall portion 12, and might be formed so that both recesses 15 and 18 are concavely recessed in the lower face and the upper surface of the upper wall portion 12, respectively.
Additionally, it is desirable that the arm portions 84 provided as the first locking portions are arranged at respective positions adjacent to the opposite side wall portions 17 which are mutually opposed in a longitudinal direction of the substrate connector 1, and are provided as breadthwise opposite ends of the substrate connector 1. Thus, in the illustrated embodiment, the arm portions 84 are arranged at positions corresponding to respective intermediate positions located between first and second terminals 61 from both right and left ends of the substrate connector 1. Further, the arm portions 84 of the above- mentioned nails 81 are accommodated in the arm-accommodating recesses 18, and the electrode portions 84a, which are provided at the free ends of the arm portions 84 are arranged to be received in the penetratingly formed engagement recesses 15 and are exposed to the interior of the insertion apertures 13.
On the other hand, the afore-mentioned wire connector 101 corresponds to a plug connector and is provided with a counterpart housing 111 formed as a second housing integrally formed of an insulating material such as synthetic resin or the like and is adapted for being fitted in the above-mentioned substrate connector 1 , and non-illustrated counterpart terminals provided as second terminals, each being made of a good electrically conductive material such as a metallic material or the like, and are mounted in the counterpart housing 111. The counterpart housing 111 is a thick-plate-like member, which has a flattened and strip-like rectangular outer shape and is formed to be extended in a breadthwise direction. Further, the counterpart housing 111 is provided with a plugging portion 113 to be inserted in the insertion aperture 13 of the substrate connector 1 , and a flange portion 114 formed to be joined together with the plugging portion 113 on a side opposite to a confronting face 113a in the plugging portion 113, which confronts the substrate connector 1.
The counterpart housing 111 is further provided with a plurality of terminal receipt holes 116, which are formed to penetrate through both the plugging portion 113 and the flange portion 114 and to be extended in a direction in which the counterpart housing 111 is inserted into and withdrawn from the afore-mentioned insertion aperture 13, namely, in a insertion/withdrawn direction of the counterpart housing 111. The terminal receipt holes 116 are permitted to receive therein counterpart terminals in a manner such that each hole holds therein a single piece of terminal. Further, in the terminal receipt holes 116, end portions of electric wires 191, which are connected to the counterpart electrodes are received one by one. Therefore, in a state where the substrate connector 1 and the wire connector 101 are fitted together to achieve engagement therebetween, the contacting portions 64 of the terminals 61 are allowed to come into the terminal receipt holes 116 via openings thereof formed in a face of the plugging portion 113 that faces the substrate connector 1 to come into contact with the counterpart terminals thereby achieving physical connection therebetween. Accordingly, the terminal receipt holes 116 are arranged such that the number thereof is the same as those of the terminals 61, and that they are similarly arranged in a raw at a pitch identical to that of the raw of the terminals 61. In the illustrated embodiment, ten lengthy terminal receipt holes 116 are arranged in a raw while maintaining thereamong a spacing corresponding to a predetermined pitch.
The plugging portion 113 has two laterally spaced side walls 113c of which respective portions located close to the afore-mentioned confronting face 113a are provided with guide protrusions 121 formed there to be protruded outwards. The guide protrusions 121 are adapted for being inserted into the guide grooves 21 formed at ends of the insertion aperture 13. Further, an upper surface 113b of the plugging portion 113, which is provided as a surface to form a second locking portion is provided with the pair of upwardly projecting engagement-purpose raised portions 115 formed to be laterally separated away from one another. The engagement-purpose raised portions 115 are provided as raised portions engaged with the arm portions 84 equipped for the respective nails 81 that fixedly secure the substrate connector 1 to a substrate in a state where the substrate connector 1 and the wire connector 101 are fitted together to achieve engagement therebetween, and thus the engagement-purpose raised portions 115 can function as the second locking portion. The engagement-purpose raised portions 115 are desirably provided at positions located adjacent to the side walls 113c of the plugging portion 113, and therefore, in the illustrated embodiment, the respective raised portions 115 are formed in respective positions corresponding to two intermediate positions, each being situated intermediately between the first and second terminals 61 from one of the right and left opposite ends. Furthermore, each of the engagement-purpose raised portions 115 is formed to have a triangle shape in its side view while offering, in its top face, a tapered surface 115a formed at a position relatively coming closer to the confronting face 113 a, so as to be gently sloped in a direction of the afore-mentioned insertion/withdrawal direction, and also an engagement surface 115b formed at a position relatively coming closer to the afore-mentioned flange portion 114, so as to be steeply inclined or directed vertically with respect to the insertion/withdrawal direction.
In addition, the afore-mentioned plugging portion 113 is provided with the conductive band 151, which is disposed on the upper surface 113b to function as a short- circuiting purpose member interconnecting the two engagement-purpose raised portions 115 laterally separated away from one another. The conductive band 151 is a narrow strip-like member made of a good electrically conductive material such as a metallic material or the like, and is provided for being extended in a width direction of the plugging portion 113, so that opposite ends thereof are arranged at positions in the vicinity of the respective sides of the two engagement-purpose raised portions 115, which are located closer to the flange portion 114. The opposite ends of the conductive band 151 are arranged so as to be in contact with the electrode portions 84a of the nails 81 in the state where the substrate connector 1 and the wire connector 101 are fitted together to achieve engagement therebetween.
It should be understood that the substrate connector 1 and the wire connector 101 complete the fitting engagement thereof at a position where end edges 84b of both arm portions 84, which are provided on the respective sides directed towards both engagement recesses 15, come into engagement with root portions 115c which are provided as boundaries between respective of the engagement-purpose raised portions 115 and the upper surface 113b. Since the conductive band 151 is disposed on the upper surface 113b at a position thereof located adjacent to the engagement-purpose raised portions 115 and belonging to the withdrawal direction side, and since the electrode portions 84a are arranged on the withdrawal direction side relative to the above-mentioned end edges 84b, the electrode portions 84a can come into contact with the conductive band 151 when the end edges 84b are brought into engagement with the root portions 115c, namely, when the fitting engagement of both connectors 1 and 101 comes to completion. At this moment, the conductive band 151 is not necessarily required to be in contact with the root portions 115c, as shown in FIG 8B with respect to which a description will be provided later, and will be adequate if it were disposed at a position where it is able to be in contact with the electrode portions 84a when the end edges 84b come into engagement with the root portions 115c.
In the case either where the length of fitting of the substrate connector 1 and the wire connector 101 can be rather rich or where the engagement surfaces 115b of the engagement-purpose raised portions 115 is formed to be relatively steep or substantially vertical with respect to the upper surface 113b, the opposite ends of the above-mentioned conductive band 151 may be formed in such a manner that as shown in FIG. 8C with respect to which a description will be provided later, a part of each end of the conductive band 151 comes to lean against the engagement surface 115b of each engagement- purpose raised portion 115. For example, in a case where the conductive band 151 disposed on the upper surface 113b of the plugging portion 113 is provided with an extension portion 151a extended toward the engagement surface 115b, as shown in FIG. 8C, the extension portion 151a can enforce the root portion 151c, and therefore, when the wire connector 101 is withdrawn from the substrate connector 1 in the fitted state, it is possible to prevent each engagement-purpose raised portion 115 from being damaged due to tight pinching of the root portion 115c thereof by the arm portion 84 of the cooperating nail 81.
At this stage, the arm portion 84 and the conductive band 151 meet one another before the end edge 84b engages with the root portion 115c. Nevertheless, there is no particular problem as long as the length of fitting of both connectors is sufficient. In addition, the engagement surface 115b is formed to have a relatively steep inclination or approximately right angle against the upper surface 113b, the arm portion 84 will be moved to pass through the engagement surface 115b for a short space of time during the fitting operation, and therefore, the end edge 84b will engage with the root portion 115c. It should here be understood that the above-mentioned conductive band 151 may be either a metallic membrane formed on the upper surface of the plugging portion 113 by means of plating, depositing, coating and the like, or may be a metallic thin plate, a metallic film, a conductive resin plate or the like, which is secured by means of gluing, screwing or the like. Further, the above-mentioned conductive band 151 may be a metallic plate, a metallic film or a conductive resin plate formed integrally with the plugging portion 113 by the use of a molding method including an over-molding, coinjection molding and the like.
In the present embodiment, the afore-mentioned nail 81 is connected to a non- illustrated fitting detection device, which is a device that is provided for detecting a fitting condition of the substrate connector 1 and the wire connector 101 on the basis of a conduction condition between the pair of nails 81 mounted on the housing 11 to be laterally spaced apart from one another. Namely, when the pair of nails 81 is mutually conducted, the fitting detection device detects completion of fitting engagement of the substrate connector 1 and the wire connector 101. Incidently, this fitting detection device may be mounted on a substrate on which, for example, the substrate connector 1 is mounted, and are electrically connected to connecting pads or the like to which the fixed portions 83 of the respective nails 81 are secured via conductive traces of the substrate.
A description of an operation to perform fitting of the above-mentioned substrate connector 1 and the wire connector 101 will be provided hereinbelow. To begin with, an operator manually brings the insertion aperture 13 of the substrate connector 1 and the confronting face 113a of the wire connector 101 to an attitude in which both face each other as illustrated in FIG. 1 , and subsequently moves them towards each other. Thereafter, as illustrated in FIG. 6, the operator inserts the plugging portion 113 of the wire connector 101 into the insertion aperture 13 of the substrate connector 1.
Hence, the extreme ends of the contacting portions 64 of the terminals 61 of the substrate connector 1 are moved into the terminal receipt holes 116 of the wire connector 101, to thereby start contacting with the counterpart terminals accommodated in the terminal receipt holes 116. At this stage, in the state indicated in FIG. 6, the engagement-purpose raised portions 115 have not yet been engaged with the arm portions 84 of the pair of nails 81.
Subsequently, the substrate connector 1 and the wire connector 101 are further allowed to approach together so that the plugging portion 113 of the wire connector 101 is urged to advance inwardly into the interior of the insertion aperture 13 of the substrate connector 1, and as a result, as best illustrated in FIG. 7, the engagement-purpose raised portions 115 come into abutment against the lower face of the respective electrode portions 84a of the nails 81. In this case, when the engagement-purpose raised portions 115 are moved leftward in FIG. 7 together with the plugging portion 113, the engagement- purpose raised portions 115 will first abut against an entrance side (on the right side in FIG. 7) of the insertion aperture 13 in the upper wall portion 12 of the housing 11, that is to say, against a portion located close to the confronting face. Nevertheless, since the above-mentioned portion is formed to be thin in its thickness, and since the tapered surface 115a is gently sloped, the engagement-purpose raised portions 115 can smoothly pass therethrough. Moreover, since the arm portions 84 of the nails 81 are made of a metallic plate having elasticity and is formed as a cantilever member fixedly mounted at its base portion on the mounting portion 82, the electrode portions 84a being formed as the free ends of the nails 81 will be moved up by the engagement-purpose raised portions 115 as soon as the electrode portions 84a come into engagement with the engagement- purpose raised portions 115 to be elastically displaced upwardly.
Thereafter, when the plugging portion 113 of the wire connector 101 is allowed to further advance into the interior of the insertion aperture 13 of the substrate connector 1, the fitting of the substrate connector 1 and the wire connector 101 is completed as illustrated in FIG. 8A. In this case, when the plugging portion 113 is moved leftward in FIG. 8A, the respective engagement-purpose raised portions 115 enter into the associated engagement recesses 15. Then, the arm portions 84 of the respective nails 81 are elastically displaced downwardly, as illustrated in FIG. 8 A, due to the elasticity of the arm portions 84, which urges a restoring motion of the arm portions 84 toward the initial attitude before displacement, and therefore, the end edges 84b are abutted against the root portions 115c of the engagement-purpose raised portions 115.
Thus, the engagement-purpose raised portions 115 on both sides are engaged with the associated arm portions 84 to be clamped there. Therefore, each of the engagement- purpose raised portions 115 is prohibited to move any longer in the rightward of FIG 8A, with respect to the arm portion 84. Accordingly, the substrate connector 1 and the wire connector 101 are locked in the state where both are fitted together, and are surely prevented from being unnecessarily disengaged against will.
Also, as is illustrated in detail in FIG. 8B, the electrode portion 84a of each nail 81 is brought into tight contact with the conductive band 151 disposed on the upper surface of the plugging portion 113. Hence, the pair of nails 81 mounted on the housing 11 to be laterally spaced apart from one another are in electrically connected together via the conductive band 151 and therefore, the afore-mentioned fitting detection device connected to the above-mentioned nails 81 detects completion of fitting engagement of the substrate connector 1 and the wire connector 101. It should be noted that since the electrode portions 84a of the nails 81 are elastically pressed against the conductive band 151 due to its own elasticity, contacting state of the electrode portions 84a with the conductive band 51 can be stably maintained.
Furthermore, the arm portions 84 of the nails 81 can basically function as a locking member to lock the substrate connector 1 and the wire connector 101 at the mutual fitting-state thereof through an abutting-engagement of the arm portions 84 with the engagement-purpose raised portions 115. In addition, since the arm portions 84 of the nails 81 are made of metallic material, these arm portions 84 can be highly resistive against thermal deformation even if the substrate connector 1 and the wire connector 101 are used under a high temperature environment, and as a result, the fitting-state of the substrate connector 1 and the wire connector 101 can be stably maintained at the locking state thereof for a long period of time. For example, if the locking member that abuts against and engaged with the respective engagement-purpose raised portions 115 is formed of synthetic resin material or the like that is similar to the material of which the housing 11 is made, when the locking member is used for a long time under a temperature environment as high as approximately 100(0C), it is often subjected to a plastic deformation due to creep caused by application of heat and therefore, release of locking of the above-mentioned fitting engagement between the two connectors 1 and 101 might possibly occur. However, in the present embodiment, the arm portions 84 of the nails 81 made of metallic material are employed for functioning as the locking member, the creep due to application of heat can be avoided ensuring a long maintenance of stable locking of the fitting engagement.
As will be understood from the foregoing, in the present embodiment of the present invention, as the housing 11 is provided with the pair of nails 81, which are respectively provided with the electrode portion 84a disposed in the engagement recess 15 or arranged adjacent to the engagement recess 15, and as the counterpart housing 111 is provided with the pair of engagement-purpose raised portions 115 and the conductive band 151 juxtaposed with or arranged adjacent to the engagement-purpose raised portions 115, when the substrate connector 1 and the wire connector 101 are fitted together while establishing the fitted engagement of both connectors, the mutual engagement of the engagement recesses 15 and the engagement-purpose raised portions 115 and the mutual contact of the electrode portion 84a and the conductive band 151 occur to produce electric conduction between the pair of nails 81 and the conductive band 151. Hence, it is possible to stably detect the fitting of the substrate connector 1 and the wire connector 101. In addition, the structure as well as the configuration of each of the substrate and wire connectors 1 and 101 can be simple resulting in facilitating the easy production thereof and the reduction in the production cost thereof.
Furthermore, the nails 81 are mounted on the laterally spaced two sides of the housing 11, the engagement recesses 15 are formed at the positions in the vicinity of the laterally opposite ends of the housing 11 , and the engagement-purpose raised portions 115 are formed in the positions close to both of the laterally opposite sides of the counterpart housing 111. Therefore, even though the substrate connector 1 and the wire connector 101 are provided with a broad and flattened shape, respectively, it is possible to detect the fitting connection performed at positions in the vicinity of the breadthwise ends and might often easily become incomplete fitting by use of the nail 81.
The present invention is not limited to the above-described embodiments, and may be changed in various ways based on the gist of the present invention, and these changes are not eliminated from the scope of the present invention.

Claims

WHAT IS CLAIMED IS:
1. A fitting detectable connector comprising: a first connector mounted on a substrate and provided with a first housing, and first terminals mounted in the first housing; and, a second connector adapted for being fitted with the first connector and provided with a second housing, and second terminals mounted in the second housing to be capable of being connected to the first terminals; wherein the first connector is provided, on the first housing thereof, with a pair of auxiliary metallic mounting bracket members, each having a first locking portion formed therein with an electrode portion, the second connector is provided, on the second housing, with a pair of second locking portions, and a short-circuiting purpose member of which at least both ends are arranged adjacent to the second locking portions, respectively, and when the first connector and the second connector are fitted together, the first locking portions and the second locking portions are brought into engagement with each other to permit the electrode portions to come into contact with the short-circuiting purpose member thereby allowing the pair of auxiliary metallic mounting bracket members to be mutually conducted, via the short-circuiting purpose member.
2. The fitting detectable connector according to claim 1, wherein each of the auxiliary metallic mounting bracket members is provided with a mounting portion mounted on the first housing, a fixed portion secured to the substrate, and a cantilever- like arm portion provided as the first locking portion and having a base portion secured to the mounting portion and a free end side formed therein with an engaging portion and the electrode portion.
3. The fitting detectable connector according to claim 2, wherein the first housing is provided with an insertion aperture formed to open in a confronting face which confronts the second connector, the second housing is provided with a plugging portion adapted for being inserted in the insertion aperture, the first locking portion is provided with the engaging portion in the free end side to be located on a side of an insertion direction of the second connector, and the electrode portion located on a side of a withdrawal direction of the second connector from the engaging portion, the second locking portions are comprised of a raised portion, respectively, formed in the plugging portion, and are respectively formed with an engaging portion located on a side of a withdrawal direction of the second connector, and, the short-circuiting purpose member is arranged to be located on a side of the withdrawal direction from the engaging portion.
4. The fitting detectable connector according to claim 3, wherein the short- circuiting purpose member has an extension portion formed to extend over a portion from a second locking portion forming surface of the plugging portion to the engaging portion of the second locking portion.
5. The fitting detectable connector according to claim 1 , wherein the auxiliary metallic mounting bracket members are respectively mounted on opposite ends of the first housing, the first locking portions are arranged adjacent to the opposite ends of the first housing, and the second locking portions are formed in respective portions located in the vicinity of opposite ends of the second housing .
PCT/US2008/006991 2007-06-01 2008-06-02 Wire-to-board connector with detect capabilities WO2008150523A2 (en)

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JP2007-147073 2007-06-01
JP2007147073A JP5043515B2 (en) 2007-06-01 2007-06-01 Mating detection connector

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KR20100027190A (en) 2010-03-10
JP5043515B2 (en) 2012-10-10
JP2008300286A (en) 2008-12-11
KR101162961B1 (en) 2012-07-06
WO2008150523A3 (en) 2009-02-19

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