JP2009087831A - Terminal connection method and terminal connection device of flat cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal connection method and a terminal connection device of flat cable in which a connector can be connected to a rectangular conductor certainly and in good condition and work efficiency can be improved by reducing processes and time required for connection work. <P>SOLUTION: Each bus bar 4, ... is arranged, opposed to each corresponding rectangular conductor 2, ... arranged in parallel of a flat cable 1, on a resin film 3 on the upper side which covers the whole of the rectangular conductors 2, ..., and then, the connection part A of the flat cable 1 where the rectangular conductors 2 and the bus bars 4 opposing to each other are pinched by a horn 6 and an anvil of an ultrasonic welding device. By ultrasonic vibration of the horn 6, the resin film 3 interposed between the rectangular conductors 2 and the bus bars 4 is heated and melted, then the melted resin of the resin film 3 is removed from between the rectangular conductors 2 and the bus bars 4. The contact portion of the rectangular conductors 2 and the bus bars 4 from which the resin film 3 is removed is mutually melted and ultrasonic welded to permit current to flow. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a terminal connection method and a terminal connection device for a flat cable used for wiring of various electrical components mounted in a vehicle or wiring in an electric device, for example.

  Conventionally, as a method of connecting the flat cable and the connection terminal, for example, after removing the coating material coated on the core wire end of the flat cable by laser light irradiation, the connector is connected to the core wire from which the coating material has been removed. There is a method of connecting a flat cable and a connector of Patent Document 1 in which a laser beam is irradiated and the core wire of the flat cable and a connection terminal of the connector are joined while the terminals are in contact with each other.

Japanese Patent Publication No. 8-17108

  However, in the connection method, when connecting the connector connection terminal to the core wire from which the coating material of the flat cable has been removed, the coating material of the portion to which the connector connection terminal is connected is removed with a laser beam, or For example, it must be removed in advance by peeling, excising, etc., and it takes time and effort to remove the covering material. In addition, when removed by laser light, peeled off, or cut away, the dust of the covering material tends to remain on the core wire, causing connection failure.

  In view of the above-mentioned problems, the present invention can connect the connection terminal to the flat conductor in a reliable and good state, reduce the steps and time required for the connection work, and improve the work efficiency. An object is to provide a terminal connection method of a cable and a terminal connection device thereof.

The present invention relates to a flat cable terminal connection method in which a connection terminal is connected to a flat conductor covered with a resin film having flexibility and insulation so as to be energized. The connection terminal is disposed on one surface of the resin film so as to face the conductor and is disposed on one surface of the resin film covered with the flat conductor, and is disposed on the one surface of the resin film so as to face the flat conductor at the connection location. The terminal-side holding body is pressed against the terminal, and the cable-side holding body is pressed against the other surface of the resin film so as to face the rectangular conductor at the connection location, and then the connection held between the holding bodies. The resin film interposed between the flat conductors at the locations and the connection terminals is melted by ultrasonic vibration of at least one of the sandwiching bodies so that the contact portion between the flat conductors and the connection terminals can be energized. As an aspect of this invention, a resin in which a resin film dissolved between the cable-side sandwiching body and the connection terminal is dissolved on the pressing surface of the cable-side sandwiching body. It is possible to form a plurality of recesses that allow the inflow of.

  Further, as an aspect of the present invention, the terminal side holding body can be ultrasonically vibrated with respect to the fixed cable side holding body.

  As an aspect of the present invention, the volume of the concave portion can be set to a volume ratio larger than the volume of the resin dissolved in the resin film interposed between the cable side sandwiching body and the connection terminal.

  Moreover, as an aspect of the present invention, a plurality of recesses that allow the inflow of the resin dissolved in the resin film interposed between the cable side holding body and the connection terminal can be formed on the pressing surface of the connection terminal. .

  In addition, as an aspect of the present invention, it is possible to check whether the flat conductor and the connection terminal are welded so as to be energized by the energization check means.

Further, the present invention provides a flat cable terminal connecting device for connecting a connecting terminal to a flat conductor covered with a flexible and insulating resin film so as to be energized. The connecting terminal is disposed on one surface of the resin film covered with the rectangular conductor so as to be opposed to the rectangular conductor, and is disposed on one surface of the resin film so as to be opposed to the rectangular conductor at the connection location. A terminal-side clamping body that is pressed against the connection terminal, a cable-side clamping body that is pressed against the other surface of the resin film, facing the flat conductor at the connection location, and the terminal-side clamping body Or it is the terminal connection apparatus of the flat cable which provided one of the cable side clamping bodies so that ultrasonic vibration was possible.

  As an aspect of the present invention, a plurality of recesses that allow inflow of a resin dissolved in a resin film interposed between the cable side holding body and the connection terminal can be formed on the pressing surface of the cable side holding body.

  Further, as an aspect of the present invention, the terminal side holding body can be provided so as to be capable of ultrasonic vibration, and the cable side holding body can be fixed so as not to move.

  The flat cable is, for example, a single rectangular conductor covered with a resin film, or a plurality of rectangular conductors arranged in parallel with a pair of resin films, and each rectangular conductor is sandwiched between them. It can be configured by a unit in which the resin films of the non-existing parts are bonded together.

  Further, the flat conductor can be composed of a conductive metal flat conductor such as a flat conductor or a round flat conductor. The resin film can be formed of a thin resin film having flexibility and insulation.

  Further, the connection terminal can be constituted by, for example, a bus bar formed in a width corresponding to one flat conductor. Further, the protrusions can be constituted by protrusions having a three-dimensional shape such as trapezoidal or hemispherical shape, or protrusions having a cross-sectional shape such as a trapezoidal cross section or a semicircular cross section.

  The energization check means can be constituted by, for example, an energization check circuit or other energization detection circuit. Further, the terminal connection device can be constituted by, for example, an ultrasonic welding device that ultrasonically welds a conductive metal conductor and a connection terminal. In addition, as a method other than ultrasonic welding, for example, resistance welding, thermocompression bonding, spot welding, soldering, or the like can be used.

  According to this invention, the resin film interposed between the flat conductor and the connection terminal is melted by ultrasonic vibration while the connection terminal is pressed against the resin film covered with the flat conductor of the flat cable, and the flat conductor and Since ultrasonic welding is performed on the contact portion with the connection terminal so that energization is possible, the connection terminal can be reliably and well connected to the flat conductor of the flat cable. Moreover, since the work of removing the resin film and the work of connecting the connection terminals can be performed substantially simultaneously in one step, the labor and work of removing the resin film of the portion to which the connection terminals are connected in advance are required. It is possible to save work, reduce the process and time required for the connection work, and improve work efficiency.

  An object of the present invention is to be able to connect a connection terminal to a flat conductor of a flat cable in a reliable and good state, reduce the steps and time required for the connection work, and improve the work efficiency. This was achieved by dissolving the resin film interposed between the flat conductor of the flat cable and the connection terminal by ultrasonic vibration and ultrasonically welding the contact portion between the flat conductor and the connection terminal so that current can be applied.

  An embodiment of the present invention will be described in detail with reference to the drawings.

  The drawing shows a flat cable terminal connecting method and its terminal connecting device used when connecting a bus bar to a rectangular conductor covered with a flexible and insulating resin film. 1, 2, and 3, the flat cable 1 has a terminal connection method in which each flat conductor is opposed to a plurality of flat conductors 2 arranged in parallel at a connection location A of the flat cable 1. 2... After arranging a plurality of bus bars 4 on the resin film 3 on the upper surface side that is entirely covered, the connecting portion A of the flat cable 1 where the flat conductor 2 and the bus bar 4 face each other is connected to the ultrasonic welding apparatus 5. The horn 6 and the anvil 7 are sandwiched up and down and pressurized. The resin film 3 interposed between the flat conductor 2 and the bus bar 4 is heated and dissolved by ultrasonic vibration of the horn 6 and the resin dissolved in the resin film 3 is pushed out from between the flat conductor 2 and the bus bar 4 to be removed. To do. The bus bar 4 is directly pressed against the portion of the flat conductor 2 from which the resin film 3 has been removed, and then the contact portion between the flat conductor 2 and the bus bar 4 is melted together by ultrasonic vibration and ultrasonically welded so as to be energized. .

  In the embodiment, each of the rectangular conductors 2 of the same width arranged in parallel with a predetermined pitch interval is connected to each of the bus bars 4 formed with a width corresponding to each of the rectangular conductors 2. However, when each bus bar 4 is connected to each of the rectangular conductors 2 arranged in parallel at different pitch intervals, for example, each of the rectangular conductors 2 is separated at a corresponding pitch interval. The bus bars 4... And the horn 6 and the anvil 7 of the ultrasonic welding apparatus 5 are arranged.

  In addition, when connecting each bus bar 4 to each rectangular conductor 2 formed with a different width, each bus bar 4 formed with a width corresponding to each rectangular conductor 2 and the ultrasonic welding apparatus 5 A horn 6 and an anvil 7 may be disposed.

  The flat cable 1 has a plurality of rectangular conductors 2 formed in the same width in parallel with a predetermined pitch interval, and the upper and lower sides of a conductor group in which the rectangular conductors 2 are arranged in parallel. A pair of resin films 3 and 3 having flexibility and insulation are coated on both surfaces, and the resin films 3 and 3 in a portion where the flat conductors 2 are not sandwiched are integrally bonded. It is.

  The ultrasonic welding device 5 is provided so as to be movable in the vertical direction and capable of ultrasonic vibration in the horizontal direction so as to face the flat conductor 2 disposed at the connection point A of the flat cable 1 and disposed on the resin film 3 on the upper surface side. The horn 6 that is pressed against the bus bar 4 and the anvil 7 that is fixed to the flat conductor 2 and the upper electrode 6 at the connection location A so as not to move up and down and to prevent ultrasonic vibration, and pressed against the resin film 3 on the lower surface side. It consists of.

  The horns 6 are disposed above the flat conductors 2 arranged at the connection point A of the flat cable 1 and are arranged at an interval corresponding to the flat conductors 2.

  An upper end side of the horn 6 melts the resin film 3 interposed between the flat conductor 2 and the bus bar 4, and an ultrasonic vibration generator (not shown) for ultrasonic welding the flat conductor 2 and the bus bar 4 to each other. It is connected to.

  Moreover, the lower end side pressing surface of the horn 6 pressed against the resin film 3 on the upper surface side is each of the bus bars 4... Pressed against the resin film 3 on the upper surface side covered with the flat conductors 2. It forms in the magnitude | size and shape which are pressed with respect to the connection side edge part 4a ....

  Further, the entire horn 6 is opposed to the flat conductors 2 at the connection point A by a lifting means (not shown) and is pressed against the bus bars 4 arranged on the resin film 3 on the upper surface side, and the flat. The cable 1 and the bus bar 4 are moved up and down to a raised position where insertion and removal of the connection portion A formed by overlapping the top and bottom are allowed.

  The anvils 7 are disposed below and opposed to the respective flat conductors 2 arranged at the connection location A of the flat cable 1, and a plurality of the anvils 7 are arranged at intervals corresponding to the respective flat conductors 2.

  Moreover, the upper end side pressing surface of the anvil 7 is formed in a horizontal width corresponding to one flat conductor 2, and is formed in a size and shape corresponding to a connection portion A between the flat conductor 2 and the bus bar 4. Further, on the pressing surface of the anvil 7 pressed against the resin film 3 on the lower surface side, a plurality of substantially trapezoidal protrusions 7a as viewed from the side surface are arranged along the pressing surface.

  Further, in the valleys between the projections 7a, the upside down of the resin film 3 interposed between the opposing surfaces of the projections 7a of the anvil 7 and the connection side end 4a of the bus bar 4 is allowed to flow upside down. Triangular recesses 7b are formed.

  Moreover, the volume of each recessed part 7b ... is larger than the volume of the molten resin of the resin film 3 interposed between each projection 7a ... of the anvil 7 and the connection side end part 4a of the bus bar 4. It is set.

  Further, when connecting each of the rectangular conductors 2 formed with the same width to each of the bus bars 4 formed with a width corresponding to each of the rectangular conductors 2..., For example, the narrow width shown in FIG. 5 and the wide anvil 7 shown in FIG. 5B are arranged at a pitch interval corresponding to each of the rectangular conductors 2... Or a plurality of each of the rectangular conductors 2. Are arranged at a pitch interval corresponding to the conductor group as one set.

  In addition, on the pressing surface of the anvil 7 formed to be wide, two rows of four protrusions 7a are arranged with a predetermined pitch interval. That is, although the projections 7a are arranged in a grid pattern, they may be arranged in a desired arrangement state such as a staggered pattern or a lattice pattern, or may be arranged at equal intervals.

  Also, each rectangular conductor 2 ... and each bus bar 4 ... are energized to each rectangular conductor 2 ... of the flat cable 1 and each bus bar 4 ... connected to each rectangular conductor 2 ... via each electric wire 8a. An energization check circuit 8 for performing energization check to determine whether or not welding has been possible is connected (see FIG. 1).

  The energization check circuit 8 performs an energization check as to whether or not the metals of the flat conductor 2 and the bus bar 4 are electrically connected to each other by ultrasonic welding. A weak current supplied from a power source (not shown) is always supplied to the rectangular conductor 2 and the bus bar 4, and electrical changes such as resistance, current, and voltage generated when the rectangular conductor 2 and the bus bar 4 are welded are observed. Detect.

  That is, when the metal of the flat conductor 2 and the bus bar 4 are welded to each other in an electrically good state, the electrical resistance generated at the interface between the metals decreases to a negligible level. Detects a decrease in electrical resistance. Thereby, it can be confirmed that the flat conductor 2 and the bus bar 4 are welded in an electrically good state, the ultrasonic welding by the ultrasonic welding device 5 is stopped, and the welding completion result is shown to the operator. To inform.

  Further, when the metal of the flat conductor 2 and the bus bar 4 are in contact with each other, that is, in a state where welding is not completed, the energization check circuit 8 does not detect a decrease in electrical resistance generated at the interface between the metals. That is, unless the rectangular conductor 2 and the bus bar 4 are welded in an electrically good state, the ultrasonic welding by the ultrasonic welding device 5 is continued until the decrease in electrical resistance is detected by the energization check circuit 8. .

  As a method for notifying the check result, for example, a notification means such as a buzzer, a lamp, a speaker, and a vibrator may be used to notify that the rectangular conductor 2 and the bus bar 4 are welded so as to be energized.

  Moreover, each electric wire 8a ... of the energization check circuit 8 may be connected to the horn 6 and the anvil 7 of the ultrasonic welding apparatus 5, or may be connected to the bus bar 4 and the anvil 7. Whether or not the bus bar 4 is welded so as to be energized can be checked by the energization check circuit 8.

  The illustrated embodiment is configured as described above, and a method for connecting the terminals of the flat cable 1 will be described below.

  First, as shown in FIG. 1, the horn 6 of the ultrasonic welding device 5 is made to rise and wait in advance, and the flat conductors 2 are arranged at the connection locations A of the flat cable 1 to face the flat conductors 2. The conductors 2... Are disposed on the resin film 3 on the upper surface side that is entirely covered with the bus bars 4 along the flat conductors 2, and then connected to the flat cable 1 where the flat conductors 2 and the bus bars 4 face each other. A is inserted between the horn 6 and the anvil 7.

  Next, the horn 6 is vertically lowered downward, and the horn 6 is pressed vertically from above to the connection side end 4a of the bus bar 4 disposed on the resin film 3 at the connection location A of the flat cable 1. . With the pressing force, the connection side end 4a of the bus bar 4 is pressed by the surface against the resin film 3 on the upper surface side covered with the flat conductor 2.

  Further, the projections 7a of the anvil 7 are pressed vertically from the lower side against the resin film 3 on the lower surface side covered with the flat conductor 2 so as to face the flat conductor 2 arranged at the connection portion A of the flat cable 1. Let them bite.

  Next, after the connecting portion A of the flat cable 1 is sandwiched and pressed between the horn 6 and the anvil 7 from above and below, the ultrasonic wave of the horn 6 generated by an ultrasonic vibration generator (not shown) is generated as shown in FIG. The resin films 3 and 3 of the flat cable 1 at the portion sandwiched between the horn 6 and the anvil 7 are dissolved by the vibration.

  That is, the portion of the resin film 3 where the connection side end 4a of the bus bar 4 is pressed and the portion of the resin film 3 where the projections 7a of the anvil 7 are pressed are melted to connect the end of the bus bar 4 on the connection side. The portion of the rectangular conductor 2 facing the 4a is exposed to a state where contact with the bus bar 4 is allowed.

  The melted resin of the resin film 3 at the portion where the projections 7a of the anvil 7 are pressed is pushed out from between the opposing surfaces of the projections 7a of the anvil 7 and the flat conductor 2, and the valleys between the projections 7a. Are flown into the recesses 7b formed in the.

  Further, the resin melted in the resin film 3 in the portion where the projections 7a of the anvil 7 are pressed is released from between the opposing surfaces of the projections 7a of the anvil 7 and the flat conductor 2, and the projections 7a of the anvil 7 are released. Is exposed to a state in which contact with the projections 7a is allowed, so that the projections 7a of the anvil 7 are directly pressed against the exposed portion of the flat conductor 2.

  On the other hand, the melted resin of the resin film 3 in the portion where the connection side end 4a of the bus bar 4 is pressed is pushed out from between the opposing surfaces of the connection side end 4a of the bus bar 4 and the flat conductor 2, and each flat conductor 2, and flows out toward the recesses 7 b formed in the valleys between the projections 7 a of the anvil 7.

  However, the portion of the rectangular conductor 2 facing the connection side end 4a of the bus bar 4 is softened by heat generated during ultrasonic welding and sinks into the recesses 7b formed in the valleys between the protrusions 7a. Therefore, the melted resin of the resin film 3 pushed out from between the opposing surfaces of the bus bar 4 and the flat conductor 2 flows into the triangular portions 2a of the flat conductor 2 sinking into the concave portions 7b.

  Further, the melted resin of the resin film 3 in the portion where the connection side end 4a of the bus bar 4 is pressed is released from between the opposing surfaces of the connection side end 4a of the bus bar 4 and the flat conductor 2, and the bus bar 4 is connected. Since the rectangular conductor 2 at the portion facing the side end 4a is exposed in a state in which contact with the connection side end 4a of the bus bar 4 is allowed, the flat angle pushed upward by the projections 7a of the anvil 7 The protruding portion of the conductor 2 is pressed directly against the connection side end 4 a of the bus bar 4.

  That is, the resin film 3 on the upper surface side of the portion where the connection side end 4a of the bus bar 4 is pressed is melted by heat generated during ultrasonic vibration, and the flat conductor 2 covered with the resin film 3 is connected to the bus bar 4. It is exposed to the state where the contact of is allowed.

  Further, the resin in which the resin film 3 is dissolved is removed from between the flat conductor 2 and the bus bar 4, and the exposed contact portions of the flat conductor 2 and the bus bar 4 are melted together and ultrasonically welded so as to be energized. . As a result, as shown in FIG. 3, the bus bar 4 can be reliably and satisfactorily connected to the flat conductor 2 of the flat cable 1.

  When the ultrasonic welding between the flat conductor 2 and the bus bar 4 is completed, an electrical change is detected by the energization check circuit 8 and at the same time, the ultrasonic welding by the ultrasonic welding apparatus 5 is stopped and the welding is completed. The operator is informed of this. Moreover, if the horn 6 and the anvil 7 are relatively moved in the separating direction, and the connection portion A of the flat cable 1 is extracted from between the horn 6 and the anvil 7, the welding operation is completed.

  As described above, the resin interposed between the flat conductor 2 and the bus bar 4 by the ultrasonic vibration of the horn 6 while the bus bar 4 is pressed against the resin film 3 on the upper surface side covered with the flat conductor 2 of the flat cable 1. The resin film 3 is removed from between the flat conductor 2 and the bus bar 4 by heating and melting the film 3.

  At the same time, the contact portion between the flat conductor 2 and the bus bar 4 from which the resin film 3 has been removed is melted and ultrasonically welded so as to be energized, so that the bus bar 4 is securely and satisfactorily attached to the flat conductor 2 of the flat cable 1. Can be connected to the state.

  Moreover, since the operation | work which removes the resin film 3 and the operation | work which connects the bus-bar 4 can be performed substantially simultaneously by one process, the effort which removes the resin film 3 of the part to which the bus-bar 4 is connected beforehand, and The work can be omitted, and the process and time required for the connection work can be reduced to improve the work efficiency.

  Moreover, the melted resin of the resin film 3 extruded from between the projections 7a of the anvil 7 and the flat conductor 2 flows into the recesses 7b formed in the valleys between the projections 7a. In addition, the resin melted in the resin film 3 extruded from between the bus bar 4 and the flat conductor 2 is formed in each of the flat conductors 2 sunk in the recesses 7b formed in the valleys between the protrusions 7a of the anvil 7. It flows into the triangular portion 2a. Thereby, the escape place required in order to flow in the resin which the resin film 3 interposed between the flat conductor 2 and the bus bar 4 melt | dissolves can be ensured.

  Moreover, you may set the volume of each triangular part 2a ... to the predetermined | prescribed volume that the resin which the resin film 3 melt | dissolved is filled without gap after welding. Thereby, the opposing surfaces of the triangular portions 2a... Of the flat conductor 2 and the connection side end portion 4a of the bus bar 4 are joined by the resin. In addition to the joining force by welding between the bus bar 4 and the flat conductor 2, the joining force by hardening the resin interposed between the bus bar 4 and the flat conductor 2 can be obtained, so that the joining strength can be improved.

  When the flat conductors 2 of the flat cable 1 are narrow in width, if the flat conductors 2 are exposed and then welded as in normal vibration welding, a short circuit is likely to occur if the distance between the conductors is small, and high accuracy is achieved. is necessary.

  However, the terminal connection method and the terminal connection device of the present invention can be connected in a state where the flat conductors 2... Are laminated with a pair of resin films 3, 3, that is, in a state where a distance between the conductors is ensured.

  Thereby, even if the pitch space | interval between each rectangular conductor 2 ... is narrow, each rectangular conductor 2 ... and each bus-bar 4 ... can be connected easily and easily with the terminal connection method and terminal connection apparatus of this invention, It is possible to prevent the pitch interval between the flat conductors 2... From being displaced.

  FIG. 4 shows another example of the terminal connection method of the flat cable 1 in which the substantially trapezoidal protrusions 4b are projected from the side surface on the connection side end 4a of the bus bar 4 pressed against the resin film 3 on the lower surface side. Show. A plurality of the protrusions 4b are arranged along the connection side end 4a of the bus bar 4.

  Further, in the valleys between the protrusions 4b, there are recessed portions 4c that allow the inflow of the dissolved resin of the resin film 3 interposed between the facing surfaces of the connection end 4a of the bus bar 4 and the flat conductor 2. A plurality are formed. The volume of each recess 4c formed in the valley between the projections 4b is such that the resin film 3 dissolved between the projections 4b of the anvil 7 and the connection side end 4a of the bus bar 4 is dissolved. It is larger than the volume.

  That is, the connection portion A between the flat cable 1 and the bus bar 4 is sandwiched between the horn 6 and the anvil 7 of the ultrasonic welding device 5 and the bus bar 4 is fixed to the resin film 3 on the upper surface side covered with the flat conductor 2. The connection side end 4a is pressed to bite each of the protrusions 4b projecting from the connection side end 4a.

  Next, the resin film 3 in the portion where the connection side end 4a of the bus bar 4 is pressed by the ultrasonic vibration of the horn 6 pressed against the bus bar 4, and the resin in the portion where the projections 7a of the anvil 7 are pressed. Dissolve film 3.

  A part of the resin melted in the resin film 3 where the connection side end 4a of the bus bar 4 is pressed is pushed out from between the opposing surfaces of the connection side end 4a of the bus bar 4 and the flat conductor 2, and It passes between the conductors 2 and flows into the triangular portions 2a of the flat conductor 2 that sink into the recesses 4c formed in the valleys between the protrusions 4b of the anvil 7.

  Further, the remaining resin that is prevented from flowing into the triangular portions 2 a of the rectangular conductor 2 or overflows from the triangular portions 2 a of the rectangular conductor 2 is formed at the connection side end 4 a of the bus bar 4. The resin film flows between the flat conductor 2 of the flat cable 1 and the protrusions 4b of the bus bar 4 because it flows into the valleys between the protrusions 4b, that is, the recesses 4c formed between the protrusions 4b. The melted resin 3 is completely removed, and the contact portion between the flat conductor 2 and the bus bar 4 is ultrasonically welded so as to be energized.

  As a result, the bus bar 4 can be reliably and satisfactorily connected to the flat conductor 2 of the flat cable 1, and operations and effects substantially equivalent to those of the above embodiment can be achieved.

  Further, as another projecting shape in place of the projections 7a of the anvil 7, for example, as shown in FIG. A plurality of strips may be arranged in parallel in the width direction. Further, as shown in FIG. 6 (d), a plurality of substantially semicircular protrusions 7 d... As viewed from the side may be arranged in parallel in the width direction with respect to the pressing surface of the anvil 7.

  Further, as shown in FIG. 6 (e), the substantially hemispherical projections 7 e... May be arranged in a grid shape at regular intervals with respect to the pressing surface of the anvil 7. Alternatively, the protrusions 7e may be arranged in a staggered manner, and is not limited to the protrusions 7a and 7e or the protrusions 7c and 7d having the shape as in the embodiment. 6 may be formed on the connection side end 4a of the bus bar 4. As shown in FIG.

  When each bus bar 4 formed in a width corresponding to each flat conductor 2 is connected to each flat conductor 2 formed in a different width, it is formed in a width corresponding to the flat conductor 2. A plurality of horns 6 and anvils 7 are arranged at a pitch interval corresponding to each flat conductor 2. Alternatively, a plurality of horns 6 and anvils 7 formed in a width corresponding to a conductor group including a plurality of flat conductors 2... May be arranged at a pitch interval corresponding to each conductor group.

In the correspondence between the configuration of the present invention and the above embodiment,
The connection terminal of the present invention corresponds to the bus bar 4 of the embodiment,
Similarly,
The terminal connection device corresponds to the ultrasonic welding device 5,
The terminal side clamping body corresponds to the horn 6,
The cable side clamping body corresponds to the anvil 7,
The energization check means corresponds to the energization check circuit 8,
The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

The side view which shows the ultrasonic welding method of a flat cable. The side view which shows the melted state of a resin film. The side view which shows the connection state of a flat conductor and a bus-bar. The side view which shows the other example of the terminal connection method of a flat cable. The perspective view which shows the arrangement | sequence of the processus | protrusion formed in the anvil. The perspective view which shows the other arrangement | sequence of the protrusion and protrusion which were formed in the anvil.

Explanation of symbols

DESCRIPTION OF SYMBOLS A ... Connection location 1 ... Flat cable 2 ... Flat conductor 2a ... Triangle part 3 ... Resin film 4 ... Bus bar 4a ... Connection side edge part 4b ... Protrusion 4c ... Recessed part 5 ... Ultrasonic welding apparatus 6 ... Horn 7 ... Anvil 7a, 7e ... Protrusions 7b ... Recesses 7c, 7d ... Projections 8 ... Energization check circuit

Claims (9)

In a terminal connection method of a flat cable for connecting a connection terminal to a rectangular conductor covered with a resin film having flexibility and insulation so as to be energized,
Opposing to the flat conductor arranged at the connecting portion of the flat cable, the connecting terminal is arranged on one surface of the resin film covered with the flat conductor,
Opposing the rectangular conductor of the connection location, pressing the terminal side clamping body against the connection terminal arranged on one surface of the resin film,
Opposite to the rectangular conductor of the connection location, after pressing the cable side clamping body against the other surface of the resin film,
Contact between the flat conductor and the connection terminal by dissolving a resin film interposed between the flat conductor and the connection terminal of the connection portion sandwiched between the clamp bodies by ultrasonic vibration of at least one of the clamp bodies A terminal connection method for a flat cable, characterized in that the portions are welded so that energization is possible. The press surface of the cable side holding body is formed with a plurality of recesses that allow inflow of a resin dissolved in a resin film interposed between the cable side holding body and a connection terminal. Flat cable terminal connection method. 3. The flat cable terminal connection method according to claim 1, wherein the terminal side holding body is ultrasonically vibrated with respect to the fixed cable side holding body. The volume of the said recessed part was set to the volume ratio larger than the volume of the resin which the resin film interposed between the said cable side clamping body and a connection terminal melt | dissolved. The flat cable terminal connection method described in 1. 5. The pressing surface of the connection terminal is formed with a plurality of recesses that allow an inflow of a resin melted in a resin film interposed between the cable side holding body and the connection terminal. The terminal connection method of the flat cable as described in any one. 6. The flat cable terminal connection method according to claim 1, wherein an energization check means is used to check whether or not the flat conductor and the connection terminal are welded so that energization is possible. In a flat cable terminal connection device for connecting a connection terminal to a rectangular conductor covered with a resin film having flexibility and insulation so as to be energized,
Opposing to the flat conductor arranged at the connecting portion of the flat cable, the connecting terminal is arranged on one surface of the resin film covered with the flat conductor,
Opposing the rectangular conductor of the connection location, providing a terminal side clamping body pressed against the connection terminal disposed on one surface of the resin film,
Opposing to the flat conductor of the connection location, provided a cable side clamping body pressed against the other surface of the resin film,
One of the terminal side holding body or the cable side holding body is provided so as to be capable of ultrasonic vibration, and a flat cable terminal connecting device. 8. The pressing surface of the cable side clamping body is formed with a plurality of recesses that allow inflow of a resin dissolved in a resin film interposed between the cable side clamping body and a connection terminal. Flat cable terminal connection device. The flat cable terminal connection device according to claim 7 or 8, wherein the terminal side holding body is provided so as to be capable of ultrasonic vibration, and the cable side holding body is fixed so as not to move.

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