US3868488A - Device for connecting minute distributing circuit elements and minute connecting wire elements - Google Patents

Device for connecting minute distributing circuit elements and minute connecting wire elements Download PDF

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Publication number
US3868488A
US3868488A US319713A US31971372A US3868488A US 3868488 A US3868488 A US 3868488A US 319713 A US319713 A US 319713A US 31971372 A US31971372 A US 31971372A US 3868488 A US3868488 A US 3868488A
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United States
Prior art keywords
elements
circuit
minute
circuit elements
terminals
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Expired - Lifetime
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US319713A
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English (en)
Inventor
Toshihiko Kobayashi
Tetsusaburo Kamibayashi
Satoshi Ichioka
Yukinori Matsushima
Norio Mitsumoto
Hirohisa Ono
Kazuo Onishi
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Mishima Kosan Co Ltd
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Mishima Kosan Co Ltd
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Publication date
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/005—Soldering by means of radiant energy
    • B23K1/0053—Soldering by means of radiant energy soldering by means of I.R.
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/40—Semiconductor devices

Definitions

  • the present invention relates to a device for connecting minute distributing circuit elements with minute connecting wire elements, and more particularly to a heat radiation connecting device having inspection means to inspect the elements after the connection has been completed.
  • soldering generally used for connecting miniaturized electric circuits to the associated circuitry in an outside appliance such as a machine, tool, etc. is almost entirely performed by skilled manual labor.
  • a strong demand is therefore voiced for novel devices or new techniques that improve efficiency and can also solve the problem of non-uniformity of connections which inevitably accompanies manual soldering to realize perfect uniformity of product quality.
  • the present invention has been developed with the object of eliminating the above-noted defects and difficulties that have attended the conventional circuit connecting process.
  • the subject invention provides a novel device for allowing perfect connections of minute distributing circuit elements, which device is capable of confirming the existance of insulation between the circuits to be connected, so that the insulation-confirmed circuit can be connected to another circuit, and is also capable of confirming whether the connection between the circuits is proper after such connection has been completed.
  • FIG. 1 is a circuit diagram embodying the device according to the present invention.
  • FIG. 2 is a front view showing an embodiment of the device according to the present invention.
  • FIG. 3 is a side view thereof but showing only an essential part thereof
  • FIG. 4 is a perspective view of a detection head
  • FIG. 5 is an enlarged fragmental sectional view taken along the line V-V of FIG. 4;
  • FIG. 6 is a plane view showing the aligned positional relationship between a base plate and a connecting terminal assembly
  • FIG. 7 is an enlarged fragmental sectional view taken along the line VI-VI of FIG. 6;
  • FIG. 8 is a side view showing a heating lamp moving mechanism in a connecting device
  • FIG. 9 is a end view of the slider with an infrared lamps shown in FIG. 8;
  • FIG. 10 is a plane view showing a situation where the connecting elements of a terminal board are connected to the corresponding contact terminals of a connecting board;
  • FIG. 11 is a sectional view taken along the line XI-XI of FIG. 10;
  • FIG. 12 is a plane view showing a fixed condition of the base plate after connection has been completed.
  • a connecting device generally designated by numeral 1, according to the present invention.
  • the device is comprised of an insulation confirmation section 3, where the condition of the insulation of the parts to be connected is confirmed.
  • a connection section 4 where the parts are electrically connected
  • an inspection section 5 where the condition of the connection formed by said connection section 4 is ascertained
  • an illumination section 7 including an illumination lamp 6 for facilitating the positioning of the parts when performing connection thereof, said illumination lamp being controlled by operating a switch 6A.
  • the insulation confirmation section 3 includes a current shut-off circuit 12 made up of an electromagnetic relay and other associated elements, and a plug socket assembly 15 in which an attachment plug 14 of detection head 13 (which is described later) is insertable.
  • the current shut-off circuit 12 and plug socket assembly 15 are connected in series to the output side of a rectifier 11 which is supplied at its input side with an AC voltage through a voltage regulator from an AC power source.
  • Circuit elements to be connected are shown diagrammatically in FIGS. 6 and 7.
  • Circuit elements 18 are distributed along the upper side of a base plate 17 as well known in the art.
  • Such base plate may be a memory plate on which elements 18 are arranged.
  • Each of the elements 18 may be 50;). wide and spaced apart 50a.
  • a detection head 13 provides a plurality of parallel electrodes 19 arranged on a base plate 3a.
  • the width and space of the electrodes 19 correspond to the width of each element 18 and the distance between each adjoining elements so that each of said electrodes will fit with a corresponding one of the elements 18 on the base plate 17.
  • the lead wires (not shown) of the alternate electrodes 19 are connected to one plug 14A of the attachment plug assembly 14 and the lead wires of the remaining electrodes are connected to the other plug 14B.
  • This pressing means 20 is designed to allow vertical movement of a flat horizontal pressing plate 21 with rotation of a rotary member 22 (shown in FIG. 2).
  • the detection head 13 and base plate 17 are positioned.
  • connection section 4 a fusing heat radiating means 26,- for example an infrared lamp, and an ammeter 27 adapted to measure the applied current are connected to the DC output of the rectifier 11 through a switch 25.
  • An indicator lamp 29 is connected in parallel to said fusing heat radiating means 26.
  • Numeral 30 refers to a transformer, having its primary side connected to an AC power source through a switch 31 and the secondary side connected to the input side of a rectifier 32.
  • the DC output of said rectifier 32 is adjusted by an adjusting knob 33 and is connected to a transfer motor 35 through a switch 34.
  • the condition of said motor 35 is indicated by a lamp 36.
  • the infrared lamp 26 is movable in the direction of arrows in FIG. 8.
  • a horizontal guide bar 37 extends out from a frame plate 1B and is slidably passed through a hole 28a in a slider 28 which supports said infrared lamp 26.
  • a lead screw 38 which is threadedly engaged along a length thereof with a threaded hole 28b in said slider 28.
  • numeral 40 denotes an inspector contactor made of an electroconductive material.
  • the fore end portion 40a is formed smaller than the width of each connecting element 39a on a connecting terminal board 39 so that it will not overlap and simultaneously contact the adjoining elements 34.
  • This contactor 40 is driven by a motor 41 to move in the direction of arrows in FIG. 2, said motor 41 being connected to the DC output side of the rectifier 32 through a speed regulator 43.
  • the contactor 40 is also electrically connected to one of the open terminals 52 of a variable resistance 48 in a bridge circuit 45.
  • variable resistance member 48 in said bridge circuit 45 is connected to one of the open terminals of another resistance member 46, the other open terminal thereof being in turn connected to one of the open terminals of still another resistance member 47.
  • a terminal 50' which extends out from the other open terminal 50 of said resistance member 47, is electrically connected to a metal bar which can span one end of each or a plurality of circuit elements by urging the bar by pressing plate 21.
  • One example of the bar 80 is shown in FIG. 12.
  • connection confirmation circuit 82 Connected between the terminals 51 and 52 of said bridge circuit 45 is a connection confirmation circuit 82 which includes an ammeter 55 adapted to measure the electric current flowing through said circuit, and indicator lamps 56 and 57 connected in parallel thereto.
  • the electric circuits of these indicator lamps 56 and 57 are made and broken according to the value of electric current measured by said ammeter 55, and the operation thereof is controlled by a control unit 55' and a switch 83.
  • the system is arranged such that when the electric current flowing between said terminals 51 and 52 of the bridge circuit 45 is greater than a predetermined setting current, switch 83 is connected to the terminal 57a of the indicator lamp 57 to complete a circuit including lamp 57, while when the current flowing between said terminals 51 and 52 is smaller than the setting current, said switch 83 is now connected to the terminal 56a of the indicator lamp 56 so as to activate lamp 56. If the flowing current is equal to the setting current (or when the device is not used), said switch 83 is not connected to either of the terminals 56a and 57a but is connected to the terminal 82a of the circuit 82. The indicator lamp 56 will also go on if a faulty connection is produced.
  • timers 60, 61, a relay 62 and a switch 63 are provided between the AC source and said voltage regulator 10 and transformer 30.
  • Numerals 65 and 66 denote switches, of which the switch 66 is operated responsive to said switch 25. Switches 31 and 34 are ganged and operate simultaneously. The operation of the device of the present invention, will now be discussed.
  • the confirmation in this insulation confirmation section 3 is performed in the following manner.
  • the elements 18, 18 of both base plates 17, 17', or the connecting elements of the terminal boards 39, 70 are fixed to the corresponding electrodes 19 of the detection head 13 as described above, and then the attachment plug 14 is inserted in the plug socket 15. If any bridges exist between the elements l8, 18 of the base plates 17, 17 and/or between the connecting elements of the connecting terminal boards 39, 70, causing faulty insulation, current flows through the current shut-off circuit 12, whereby the relay 12A is engerized which lights the indicator lamp 16. Thus, the integrity of the insulation of the respective elements can be confirmed by reference to the lamp 16.
  • the connecting terminal board 39 is composed of a flexible synthetic resin sheet on which a plurality of small connecting elements 390, made of an electroconductive material, are disposed in an appropriate arrangement. Needless to say, the dimensions and pitch of these elements 39a are selected to conform to those of the elements 18 on the base plate 17. Also, although not shown, solder is attached to the ends of these connecting elements 39a.
  • the connecting terminal board 39 is laid on the base plate 17 such that the ends of the connecting terminals 39a of the terminal board 39 are located right" on the ends of the corresponding elements 18 of the base plate 17 as shown in FIG. 7. Correct positioning of the respective elements 18 and 39a is performed by using a microscope.
  • the base plate 17 and connecting terminal board 39 are retained in such position by using the aforementioned pressing means 20 in the following manner.
  • the attached base plate 17 and connecting terminal board 39, with their elements 18 and 39a properly aligned and in contact, are placed between the infrared lamp 26 and bed plate 1A along the direction of movement of said lamp 26, and then handle 22a is turned to lower the pressing plate 21 so as to securely hold the superimposed portions of said base plate 17 and terminal board 39 between said bed plate IA and pressing plate 21.
  • the pressing plate 21 is made of a heat permeable material such as for example quartz glass.
  • motor 35 is driven to rotate the lead screw 38 to accordingly move the infrared lamp 26 along the length of said screw, and heat rays are generated from said moving infrared lamp 26 and directed toward the attached ends of the elements 18 and 39a of the base plate 17 and terminal board 39 to melt the solder at the element ends and thereby join the elements 18 with the corresponding connecting elements 39a.
  • the joining of the other ends of the connecting elements 39a of said terminal board 39 with the corresponding ends of the elements 18 of base plate 17 can be performed in the same way.
  • the same operation can be also employed for effecting the connection of the respective elements 70a of the connecting terminal board 70 which is used for connecting the other ends of the elements 18 of the base plate 17 to an outside machine, tool or such.
  • said terminal board 70 is composed of a synthetic resin sheet with a plurality of connecting elements 70a disposed on its upper surface in suitable arrangement. It is to be noted that the ends of the connecting elements 700, on the side where they are to be connected to an outside machine are provided with a greater pitch than that given to their ends which have previously been connected to the respective elements 18 of the base plate 17, so as to facilitate the connecting operation (see FIG. 10).
  • the length of time for which the infrared lamp 26 is lit, and the time during which the lamp travels along screw 38 are controlled by timers and 61, respectively.
  • connection of respective elements of the base plates l7, 17', with the connecting terminal board 39 and the connection of elements of the base plate 17 with the connecting terminal board (used for connecting said elements to an outside machine) are effected in a preferred form.
  • one of the open terminals 50 of the bridge circuit 45 is connected to a plate 72 to which said base plates l7, 17' are fixed (see FIG. 12), and then the contactor 40, to which the other open terminal 52 of said bridge circuit 45 is connected, is also electrically connected to the open ends of the contacting elements 70a of the connecting terminal board 70 in a successive manner.
  • the balancing of the bridge circuit 45 is set by using a standard sample in which appropriate connection has been made beforehand. This setting is performed by adjusting the variable resistance member 48. At this time, the amount of electric current flowing between the terminals 51 and 52 is memorized as the setting 'current by the control unit 55'.
  • the connecting device has an insulation confirmation mechanism whereby the condition of insulation of the parts to be connected can be confirmed before connecting the base plate to the parts to be connected such as connecting terminal board, so that it is possible to prevent any failure or trouble caused by faulty insulation that may take place after the connection has been made.
  • the present device also has a connecting section where quick and secure connection can be achieved semi-automatically, thereby realizing remarkable improvement of workability and productivity as com-- pared with the conventional manual practices. Further, the parts connected in the connecting section are immediately subjected to inspection in the inspection section to ensure perfect exclusion of the defective or nonconforming articles.
  • a connecting means for connecting the elements after testing by said insulation confirmation means comprised of a heat radiation source for heating solder used to connect the elements, a vertically movable pressing plate for pressing the wire elements to the circuit elements, said pressing plate being positioned adjacent said heat radiation source and being heat transparent, and means coupled to said heat source for moving said heat source along the elements being connected for proper heating; and an inspection means for inspection after said elements have been connected by said connecting means and comprised of a bridge circuit having two open terminals, a contact member connected with one open terminal of said bridge circuit and adapted to electrically contact all of said circuit elements via said pressing plate, a scanning member coupled to the other of said open terminals and adapted to sequentially scan the other ends of said circuit elements through said wire elements, and indication means coupled to said bridge circuit for indicating faultily connected wire elements, in response to the value of resistance between said terminals.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Supply And Installment Of Electrical Components (AREA)
US319713A 1971-12-31 1972-12-29 Device for connecting minute distributing circuit elements and minute connecting wire elements Expired - Lifetime US3868488A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47000825A JPS4873785A (ja) 1971-12-31 1971-12-31

Publications (1)

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US3868488A true US3868488A (en) 1975-02-25

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ID=11484415

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US319713A Expired - Lifetime US3868488A (en) 1971-12-31 1972-12-29 Device for connecting minute distributing circuit elements and minute connecting wire elements

Country Status (5)

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US (1) US3868488A (ja)
JP (1) JPS4873785A (ja)
CA (1) CA977832A (ja)
DE (1) DE2263231A1 (ja)
GB (1) GB1411599A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268739A (en) * 1978-03-09 1981-05-19 United Wiring & Manufacturing Co. Automated wiring apparatus
US4356384A (en) * 1980-03-03 1982-10-26 Arnon Gat Method and means for heat treating semiconductor material using high intensity CW lamps

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157006A (en) * 1984-04-05 1985-10-16 Int Computers Ltd Testing printed circuit board assemblies

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289046A (en) * 1964-05-19 1966-11-29 Gen Electric Component chip mounted on substrate with heater pads therebetween
US3604108A (en) * 1969-10-07 1971-09-14 Bell Telephone Labor Inc Method for handling, testing and bonding of beam-leaded devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289046A (en) * 1964-05-19 1966-11-29 Gen Electric Component chip mounted on substrate with heater pads therebetween
US3604108A (en) * 1969-10-07 1971-09-14 Bell Telephone Labor Inc Method for handling, testing and bonding of beam-leaded devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268739A (en) * 1978-03-09 1981-05-19 United Wiring & Manufacturing Co. Automated wiring apparatus
US4356384A (en) * 1980-03-03 1982-10-26 Arnon Gat Method and means for heat treating semiconductor material using high intensity CW lamps

Also Published As

Publication number Publication date
JPS4873785A (ja) 1973-10-04
DE2263231A1 (de) 1973-07-12
GB1411599A (en) 1975-10-29
CA977832A (en) 1975-11-11

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