JP5053023B2 - Flat cable terminal welding method and terminal welding apparatus - Google Patents

Description

  The present invention relates to a terminal welding method and a terminal welding apparatus 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 covering the core wire end of the flat cable by laser light irradiation, the connector connection terminal 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 the core wire of the flat cable and the connection terminal of the connector are joined by irradiating a laser beam in a state where the contact is made.

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 problems, the present invention can connect a connection terminal to a conductor in a reliable and good state, reduce the steps and time required for the connection work, and improve the work efficiency. An object of the present invention is to provide a terminal welding method and a terminal welding apparatus therefor.

According to the present invention, a connection terminal can be energized to the conductor in a flat cable formed by a plurality of conductors arranged in parallel at a predetermined interval and a flexible and insulating resin film covering the conductors. In the terminal welding method for a flat cable to be connected to the conductor, the connection terminal is pressed against one surface of a resin film covering the conductor, facing the conductor disposed at the connection portion of the flat cable, and the conductor at the connection portion and opposed to the connecting terminal, the terminal-side electrodes, pressed against the contacts formed in the width small than the width of the conductor, on the other surface of the resin film opposite to the conductor of the connection points, in the cable-side electrode, the conductor after pressing the contacts formed in the width small than the width, and more heating the terminal-side electrode through conductive heating the connection terminal, the connection terminals pressed et al Part by dissolving the resin film, Rutotomoni into contact with possible energized the connection terminal to the conductor, the cable-side electrode is the cable-side electrode by more fever conductible by first conducting means by dissolving the resin film pressed against the part, it performs a resin film removing step of Ru into contact with possible energized the cable-side electrode to the conductor, between the resin film removing step, the terminal-side electrode and the cable A weak current is applied to the side electrode, and an electrical change between the electrodes that occurs when the conductor and the connection terminal are brought into contact with each other in an energizable state is detected by an energization detecting means, and the energization detection is performed. when the detection signal detected an electrical change from the means it is output for between the conductor and the terminal-side electrode and the cable-side electrode connected with the connection terminal, resistance welding and the connection terminal and the conductor Starts the power current required that, when energized by the second energizing means of the current needed to resistance welding and the connection terminal and the conductor, conductively resistive contact portion between the conductor and the connection terminal A connection terminal connecting step for welding is performed, and in the resin film removing step, each of the terminal side electrode and the cable side electrode is set such that the heat generation temperature of the terminal side electrode is higher than the heat generation temperature of the cable side electrode. Among the first energizing means provided on the side, the terminal energizing current is energized to the terminal side electrode by the first energizing means on the terminal side electrode connected to the terminal side electrode, It is a flat cable terminal welding method in which the first current-carrying means on the cable-side electrode side supplies the current necessary for melting to the cable-side electrode .

Also, the present invention is connected to the conductor in the flat cable which is formed by a plurality of conductors arranged in parallel at a predetermined distance, and a flexible resin film and an insulating coat the conductor In the terminal welding device of the flat cable that connects the terminals so as to be energized, facing the conductors arranged at the connecting portions of the flat cables, the connecting terminals are arranged on one surface of the resin film covering the conductors, A terminal-side electrode provided with a contact formed to be smaller than the width of the conductor so as to be able to be pressed against the connection terminal facing the conductor at the connection location, and the other surface of the resin film facing the conductor at the connection location the cable-side electrode with a pressing capable contacts formed to a width small than the width of the conductor is provided, the terminal-side electrode is pressed against the connecting terminal, the cable-side electrode resin When pressed against the Irumu, the relative and the terminal-side electrode and the cable-side electrode, dissolved necessary required to heating to the connection terminals and the temperature which the resin film portion and the cable-side electrode is pressed is dissolved A first energization means for energizing current is provided, a weak current is energized to the terminal side electrode and the cable side electrode, and the electrodes are generated when the conductor and the connection terminal are brought into contact with each other in an energizable state. An energization detection means for detecting an electrical change of the current, and based on a detection signal output from the energization detection means, open or close the energization circuit connected to each electrode, the energization circuit is opened, Or, as it is closed, a current necessary for resistance welding the contact portion between the conductor and the connection terminal is applied to the terminal side electrode and the cable side electrode connected by the conductor and the connection terminal. First Energizing means is provided, the first conductive member, a first conductive member of the terminal-side electrode side connected to the terminal-side electrode, the first of the cable-side electrode side connected to the cable-side electrode 1 The first energizing means on the terminal side electrode side with respect to the terminal side electrode so that the exothermic temperature of the terminal side electrode is higher than the exothermic temperature of the cable side electrode. It is a flat cable terminal welding apparatus that is configured to be able to energize the melting required current, and wherein the first energizing means on the cable side electrode side is configured to be able to energize the melting necessary current to the cable side electrode. the shall be the feature.

Front portion SL flat cable, such as those coated with one conductor with a resin film, or by coating the respective conductors of the plurality of which are arranged in parallel with the pair of the resin film, in which each conductor is not pinched Each of the resin films can be integrally bonded.

  The conductor can be composed of a conductive metal conductor such as a flat conductor or a round 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 conductor. The energization detecting means can be constituted by an energization detecting circuit that detects electrical changes such as resistance, current, voltage, and the like. Moreover, the terminal welding apparatus can be comprised with the resistance welding apparatus etc. which weld the metal conductor which has electroconductivity, and a connection terminal, for example. As a method other than resistance welding, for example, ultrasonic welding, thermocompression bonding, spot welding, soldering, or the like can be used.

  According to this invention, after pressing the connection terminal to one surface of the resin film covering the conductor of the flat cable, pressing the terminal side electrode to the connection terminal, after pressing the cable side electrode to the other surface of the resin film, The resin film in the portion where the connection terminal and the cable side electrode are pressed is dissolved, and the connection terminal and the cable side electrode are brought into contact with the conductor. After that, current is passed through the terminal side electrode and the cable side electrode connected by the conductor and the connection terminal, and the contact portion between the conductor and the connection terminal is resistance welded so that current can be passed. The connection terminal can be connected in a reliable and favorable state. 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.

  The purpose of this invention is to be able to connect the connection terminal to the conductor of the flat cable in a reliable and good state, to reduce the steps and time required for the connection work, and to improve the work efficiency. By melting the resin film of the portion where the connection terminal and the cable side electrode are pressed, the connection terminal and the cable side electrode are brought into contact with the conductor, and the contact portion between the conductor and the connection terminal is resistance-welded so as to be energized. Achieved.

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

  The drawing shows a terminal welding method of a flat cable and its terminal welding apparatus used when a bus bar is connected to a conductor covered with a resin film having flexibility and insulation. 1 to 4, the terminal welding method for the flat cable 1 is a resin film on the upper surface side that covers the flat conductor 2 so as to face the flat conductor 2 disposed at the connection point A of the flat cable 1. After the bus bar 4 is pressed onto 3, the terminal side electrode 6 of the terminal welding device 5 is pressed against the bus bar 4 facing the flat conductor 2 at the connection point A, and the cable is applied to the resin film 3 on the lower surface side facing the flat conductor 2. The side electrode 7 is pressed.

After flat and rectangular conductor 2 and the bus bar 4 is the connection point A of the flat cable 1 facing, pressurized by holding up and down in the terminal-side electrode 6 and the cable-side electrode 7, more heat generating terminal side electrode 6 conductible Then, the bus bar 4 is heated, and the resin film 3 in the portion where the bus bar 4 is pressed is dissolved. At the same time, to dissolve the resin film 3 of a portion the cable-side electrode 7 by more heating cable side electrode 7 conductible is pressed. Thereby, the bus bar 4 and the cable-side electrode 7 are brought into contact with the flat conductor 2 in a state where electricity can be supplied.

  Immediately after this, a current necessary for resistance welding is applied between the terminal-side electrode 6 and the cable-side electrode 7 connected by the rectangular conductor 2 and the bus bar 4, and the contact portion between the rectangular conductor 2 and the bus bar 4 is passed. It is resistance-welded so that it can be energized.

  For example, after dissolving the resin film 3 in the portion where the bus bar 4 is pressed, the resin film 3 in the portion where the cable side electrode 7 is pressed is dissolved. Or after melt | dissolving the resin film 3 of the part by which the cable side electrode 7 was pressed, you may melt | dissolve in order by melt | dissolving the resin film 3 of the part by which the bus bar 4 was pressed.

  In the embodiment, the bus bars 4 arranged orthogonal to the length direction of the flat conductors 2 are connected to the flat conductors 2 of the same width arranged in parallel at a predetermined pitch interval. Although an example has been described, for example, when connecting each of the rectangular conductors 2... To each bus bar 4 formed in a corresponding width, each of the bus bars 4... The electrodes 6 and 7 are arranged.

  When each bus bar 4 is connected to each of the rectangular conductors 2 arranged in parallel at different pitch intervals, each bus bar 4 is connected to each of the rectangular conductors 2 at a pitch interval corresponding to each of the rectangular conductors 2. The electrodes 6 and 7 of the welding device 5 are arranged.

  When each bus bar 4 is connected to each flat conductor 2 formed with a different width, each bus bar 4 formed with a width corresponding to each flat conductor 2 and each terminal welding device 5 is connected. The electrodes 6 and 7 may be disposed.

  In detail, the flat cable 1 includes a plurality of flat conductors 2 formed in the same width in parallel with a predetermined pitch interval, and the flat conductors 2 are arranged in parallel. A pair of resin films 3 and 3 having flexibility and insulating properties are covered on the upper and lower surfaces of the flat conductor group, and the resin films 3 and 3 in a portion where the flat conductors 2 are not sandwiched. Are integrally bonded.

  The terminal welding device 5 presses the bus bar 4 on the resin film 3 on the upper surface side so as to face the flat conductor 2 arranged at the connection place A of the flat cable 1, and then faces the flat conductor 2 to The terminal side electrode 6 is pressed against the bus bar 4 and the cable side electrode 7 is pressed against the resin film 3 on the lower surface side.

  The terminal-side electrode 6 and the cable-side electrode 7 include a clamping position where the connecting portion A of the flat cable 1 where the flat conductor 2 and the bus bar 4 are opposed to each other by an elevating means (not shown) is vertically held, and the connecting portion A Is moved relative to the up and down direction to a separation position where insertion and extraction are allowed. In addition, when the cable side electrode 7 is fixed, the terminal side electrode 6 is opposed to the flat conductor 2 at the connection portion A of the flat cable 1, and the bus bar 4 placed on the resin film 3 on the upper surface side. You may move up and down in the pressing direction.

  The terminal-side electrodes 6 are arranged above the flat conductors 2 arranged at the connection points A of the flat cable 1 and arranged in a plurality at a pitch interval corresponding to the flat conductors 2. Further, the lower end side pressing surface of the terminal side electrode 6 faces the flat conductor 2 disposed at the connection location A and faces downward with respect to the bus bar 4 placed on the resin film 3 on the upper surface side. A contact point 6a that is pressed vertically is projected.

  The cable-side electrode 7 is disposed below and facing the flat conductor 2 disposed at the connection location A of the flat cable 1, and a plurality of the cable-side electrodes 7 are arranged at a pitch interval corresponding to the flat conductor 2. In addition, a contact 7a that protrudes vertically against the resin film 3 on the lower surface side is opposed to the pressing surface on the upper end side of the cable-side electrode 7 so as to face the flat conductor 2 arranged at the connection location A. Has been established.

  The contact 6a of the terminal-side electrode 6 and the contact 7a of the cable-side electrode 7 are formed to have a horizontal width corresponding to one flat conductor 2, and have a size and shape corresponding to the connection portion A between the flat conductor 2 and the bus bar 4. Is formed.

  Further, the contacts 6a and 7a of the electrodes 6 and 7 are heated to a temperature at which the resin film 3 is melted via the electric wires 8a on the upper end side of the terminal side electrode 6 and the lower end side of the cable side electrode 7, respectively. For this purpose, the first energization devices 8 and 8 are individually connected.

  When the first energization device 8 detects that the contact 6a of the terminal side electrode 6 is pressed against the bus bar 4 by a detection means (not shown), or the contact of the cable side electrode 7 to the resin film 3 on the lower surface side. When it is detected that 7a is directly pressed, a current supplied from a power source (not shown) is supplied to each contact 6a, 7a of each electrode 6, 7 based on the detection.

  Thereby, the contact 6a of the terminal side electrode 6 pressed against the bus bar 4 on the resin film 3 on the upper surface side and the contact 7a of the cable side electrode 7 pressed directly against the resin film 3 on the lower surface side are connected to the resin film 3. Heat to a temperature at which it dissolves.

  The terminal-side electrode 6 is melted by indirectly heating the resin film 3 on the upper surface side via the bus bar 4, while the cable-side electrode 7 is melted by directly heating the resin film 3 on the lower surface side. Therefore, the heat generation temperature of the terminal side electrode 6 may be set higher than the heat generation temperature of the cable side electrode 7.

  Further, the terminal-side electrode 6 and the cable-side electrode 7, apart from the first energization device 8, are connected to the contact points 6 a and 7 a of the electrodes 6 and 7 via the electric wires 9 a. The contact portion between the bus bar 4 and the bus bar 4 is connected to a second energization device 9 for resistance welding.

  When a trigger signal is output from an energization detection circuit 10 described later, the second energization device 9 opens an energization circuit between the electrodes 6 and 7 and performs resistance welding supplied from a power source (not shown). A necessary current is applied between the contacts 6a and 7a of the electrodes 6 and 7 for a predetermined time. As a result, the contact portion between the flat conductor 2 and the bus bar 4 is heated to a temperature at which it melts. The energization circuit between the electrodes 6 and 7 is closed until the trigger signal is output from the energization detection circuit 10.

  Further, whether or not the rectangular conductor 2 and the bus bar 4 are pressed to the terminal side electrode 6 and the cable side electrode 7 through the electric wires 10a. An energization detection circuit 10 is detected for detecting (see FIG. 1).

  The energization detection circuit 10 constantly energizes a weak current supplied from a power source (not shown) to the terminal-side electrode 6 and the cable-side electrode 7, and the flat conductor 2 and the bus bar 4 are in contact with each other in an energized state. Detects electrical changes such as resistance, current, voltage, etc. That is, when the resin in which the resin film 3 is dissolved is removed from between the flat conductor 2 and the bus bar 4, the flat conductor 2 and the bus bar 4 are directly pressed into a state where electricity can be applied.

  At this time, current is passed between the terminal-side electrode 6 and the cable-side electrode 7, so that the rectangular conductor 2 and the bus bar 4 can be energized by detecting an electrical change that occurs during the energization by the energization detection circuit 10. It can be detected that the state has been touched. The energization detection circuit 10 outputs a trigger signal to the second energization device 9 when detecting that the rectangular conductor 2 and the bus bar 4 are in contact with each other in an energizable state.

  On the other hand, when a trigger signal is output from the energization detection circuit 10, the second energization device 9 energizes a current necessary for resistance welding between the terminal side electrode 6 and the cable side electrode 7, The contact portion between the flat conductor 2 and the bus bar 4 sandwiched between the electrodes 6 and 7 is resistance-welded so as to be energized.

  If the rectangular conductor 2 and the bus bar 4 are not in contact with each other in an energizable state, the heating and melting of the resin film 3 by the electrodes 6 and 7 are continued until a trigger signal is output from the energization detection circuit 10. .

  The illustrated embodiment is configured as described above, and the terminal welding method for the flat cable 1 will be described below.

  First, as shown in FIG. 1, the terminal-side electrode 6 and the cable-side electrode 7 of the terminal welding device 5 are kept waiting in a separated position in advance, and are opposed to the flat conductor 2 disposed at the connection location A of the flat cable 1. Then, the bus bar 4 is pressed onto the resin film 3 on the upper surface side covering the flat conductor 2 so as to be orthogonal to the length direction of the flat conductor 2.

  Thereafter, the connecting portion A of the flat cable 1 where the flat conductor 2 and the bus bar 4 face each other is inserted between the terminal side electrode 6 and the cable side electrode 7 of the terminal welding device 5, and the connecting portion A of the flat cable 1 is inserted. The terminal side electrode 6 and the cable side electrode 7 are sandwiched from above and below to be pressurized.

  The contact 6a of the terminal side electrode 6 is pressed vertically from above on the bus bar 4 placed on the upper surface side resin film 3 covering the flat conductor 2 at the connection location A. Further, the contact 7a of the cable side electrode 7 is pressed vertically from below to the resin film 3 on the lower surface side covering the flat conductor 2 at the connection location A.

  Next, as shown in FIG. 2, the current supplied from the terminal-side first energization device 8 is energized to the terminal-side electrode 6 pressed against the bus bar 4 (indicated by an arrow in the figure) and pressed against the bus bar 4. The contact 6a of the terminal-side electrode 6 is heated to a temperature at which the resin film 3 is dissolved.

  The bus bar 4 to which the contact 6a of the terminal side electrode 6 is pressed is directly heated, and the resin film 3 of the portion to which the bus bar 4 is pressed is indirectly heated and melted. The dissolved resin is removed by being pushed out from between the flat conductor 2 and the bus bar 4 by the applied pressure.

  That is, the rectangular conductor 2 at the portion facing the bus bar 4 is exposed in a state in which contact with the bus bar 4 is allowed, so that the rectangular conductor 2 pushed upward by the contact 7 a of the cable side electrode 7 is applied to the bus bar 4. It is directly pressed against.

  At the same time, as shown in FIG. 3, the current supplied from the first energization device 8 on the cable side is energized (indicated by an arrow in the figure) to the cable side electrode 7 pressed against the resin film 3 on the lower surface side, and the resin The contact 7a of the cable side electrode 7 pressed against the film 3 is heated to a temperature at which the resin film 3 is dissolved.

  The resin film 3 in the portion where the contact 7a of the cable side electrode 7 is pressed is directly heated and melted. The dissolved resin is removed by being pushed out from between the contact 7a of the cable-side electrode 7 and the flat conductor 2 by the applied pressure. That is, since the portion of the rectangular conductor 2 facing the contact 7a of the cable side electrode 7 is exposed to allow contact with the contact 7a, the contact 7a of the cable side electrode 7 is exposed to the exposed portion of the flat conductor 2. It is directly pressed against.

  When the rectangular conductor 2 and the bus bar 4 are brought into contact with each other in an energizable state, the energization detection circuit 10 detects an electrical change that occurs between the terminal-side electrode 6 and the cable-side electrode 7, and the rectangular conductor 2 and the bus bar 4 Recognize that they are in an energized state. The energization detection circuit 10 outputs a trigger signal to the second energization device 9 when detecting that the rectangular conductor 2 and the bus bar 4 are in contact with each other in an energizable state.

  Next, as shown in FIG. 4, the second energization device 9 is necessary for resistance welding between the terminal side electrode 6 and the cable side electrode 7 immediately after the trigger signal is output from the energization detection circuit 10. A current is applied (indicated by an arrow in the figure), and the contact portion between the flat conductor 2 and the bus bar 4 is resistance-welded so as to be energized. As a result, as shown in FIG. 5, the bus bar 4 can be reliably and satisfactorily connected to the flat conductor 2 of the flat cable 1.

  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.

  When the welding of the flat conductor 2 and the bus bar 4 is completed, the welding operation by the terminal welding device 5 is stopped, the terminal side electrode 6 and the cable side electrode 7 are moved relative to each other in the separating direction, and the connecting portion of the flat cable 1 If A is extracted from between the terminal side electrode 6 and the cable side electrode 7, the welding operation is completed. Further, the operator may be notified of the completion of the welding of the flat conductor 2 and the bus bar 4 by notifying means such as a buzzer, a lamp, a speaker, and a vibrator.

  In addition, when the flat conductors 2 of the flat cable 1 are narrow in width, if the flat conductors 2 are exposed after being exposed by a normal resistance welding method, short-circuiting is likely to occur if the distance between the conductors is small, and high accuracy is required. It is.

  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.

  Thus, even if the pitch interval between the flat conductors 2 is narrow, the flat conductor 2 and the bus bar 4 can be easily and easily connected by the terminal connecting method and the terminal connecting apparatus of the present invention. It is possible to prevent the pitch interval between them from being displaced.

  FIG. 6 shows another example of the terminal welding method of the flat cable 1 in which a plurality of substantially trapezoidal protrusions 7b as viewed from the side are provided on the front end surface of the contact 7a of the cable side electrode 7. A plurality of the protrusions 7b are arranged along the pressing surface of the cable side electrode 7. Further, in the valleys between the protrusions 7b, concave and convex portions 7c, which are upside down triangles that allow inflow of the molten resin of the resin film 3 interposed between the cable side electrode 7 and the bus bar 4, are formed. . Further, the protrusions 7b... May be arranged in a desired arrangement state such as a grid shape, a staggered shape, or a lattice shape, or may be arranged at equal intervals.

  That is, the melted resin of the resin film 3 in the portion where the contact 7a of the cable side electrode 7 is pressed is pushed out from between the opposing surfaces of the projections 7b... Flows into the recesses 7c. Moreover, the resin melt | dissolved in the resin film 3 of the part by which each protrusion 7b ... of the cable side electrode 7 was pressed from between the opposing surfaces of each protrusion 7b ... of the cable side electrode 7 and the flat conductor 2 is escaped, and the cable side Since each protrusion 7b ... of the electrode 7 is directly pressed against the exposed portion of the flat conductor 2, the operation and effect substantially the same as those of the above embodiment can be achieved. Further, the protrusion 7b may be formed in a desired cross-sectional shape such as a semicircular shape or a hemispherical shape.

  A plurality of substantially trapezoidal protrusions (not shown) may be provided on the connection surface of the bus bar 4 facing the flat conductor 2 as viewed from the side as described above. In the same manner as described above, the melted resin of the resin film 3 at the portion where the protrusions of the bus bar 4 are pressed is pushed out from between the opposing surfaces of the protrusions of the bus bar 4 and the flat conductor 2, and the protrusions of the bus bar 4 are flat. Since it is directly pressed against the conductor 2, it is possible to achieve substantially the same operations and effects as in the above embodiment.

In the correspondence between the configuration of the present invention and the above embodiment,
The conductor of the present invention corresponds to the flat conductor 2 of the embodiment,
Similarly,
The connection terminal corresponds to the bus bar 4,
The first energization means corresponds to the first energization device 8,
The second energization means corresponds to the second energization device 9,
The energization detection means corresponds to the energization detection circuit 10,
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 flat cable 1 may be the flat cable 1 in which the flat conductor 2 is covered with the nonconductive resin film 3 that is an insulating member, and is not particularly limited to the one of the present embodiment. Specifically, a PET resin is preferable as the material of the film 3.

  Further, the flat conductor 2 may be a conductor having a round cross section as well as a strip-shaped conductor excellent in heat dissipation, and the flat conductor 2 may be any material as long as it has conductivity. Preferably, it is made of metal, more preferably copper or copper alloy having excellent conductivity.

  The bus bar 4 is formed by bending a metal plate. The material may be any material as long as it has conductivity, but is preferably made of metal, more preferably copper or copper alloy having excellent conductivity. The plate thickness is about 0.1 mm to 5 mm.

The side view which shows the terminal welding method of a flat cable. The side view which shows the melted state of the resin film by the terminal side electrode. The side view which shows the melted state of the resin film by a cable side electrode. The side view which shows the melted state of a flat conductor and a bus bar. The side view which shows the welding state of a flat conductor and a bus-bar. The side view which shows the arrangement | sequence of the processus | protrusion formed in the cable side electrode.

A ... Connection location 1 ... Flat cable 2 ... Flat rectangular conductor 3 ... Resin film 4 ... Bus bar 5 ... Terminal welding device 6 ... Terminal side electrode 7 ... Cable side electrode 6a, 7a ... Contact 7b ... Projection 7c ... Recess 8 ... First energization Device 9 ... second energization device 10 ... energization detection circuit

Claims (2)

A flat in which a connection terminal is connected to the conductor in a flat cable formed by a plurality of conductors arranged in parallel at a predetermined interval and a resin film having flexibility and insulation covering the conductors so as to be energized. In the cable terminal welding method,
Opposing the conductor arranged at the connection location of the flat cable, pressing the connection terminal on one surface of the resin film covering the conductor,
The connecting terminals facing the conductor of the connection points, pressing the terminal-side electrode, the contact formed in the width small than the width of the conductor,
After pressing the contact formed on the other surface of the resin film facing the conductor of the connection location , the cable-side electrode with a width smaller than the width of the conductor ,
And more heating the terminal-side electrode through conductive heating the connection terminal, and dissolving the resin film of the portion to which the connection terminal is pressed against, into contact with an energizable state the connection terminal to the conductor And
By dissolving the resin film of the more exothermic and the cable-side electrode was pressed portion the cable-side electrode conductible by first conducting means is brought into contact with a possible conduction states the cable-side electrode to the conductor The resin film removal process
During the resin film removal step, a weak current is applied to the terminal side electrode and the cable side electrode, and the conductor and the connection terminal are brought into contact with each other in a state where they can be energized. An electrical change is detected by means of energization detection
When a detection signal that detects an electrical change is output from the energization detection means, the conductor and the connection terminal are connected between the terminal-side electrode and the cable-side electrode connected by the conductor and the connection terminal. the starts energization of current needed to resistance welding,
Conducting a connection terminal connecting step of resistance welding so that the contact portion between the conductor and the connection terminal can be energized by energization by the second energization means of the current necessary for resistance welding the conductor and the connection terminal ,
In the resin film removal step,
The exothermic temperature of the terminal side electrode is higher than the exothermic temperature of the cable side electrode.
Of the first energizing means provided on the respective sides of the terminal side electrode and the cable side electrode, the terminal side electrode is provided by the first energizing means on the terminal side electrode side connected to the terminal side electrode. Energizing the current required for dissolution with respect to,
A flat cable terminal welding method , wherein the current required for melting is supplied to the cable side electrode by the first current supply means on the cable side electrode side . A connection terminal is connected to the conductor in a flat cable formed of a plurality of conductors arranged in parallel at a predetermined interval and a flexible and insulating resin film covering the conductors so as to be energized. In flat cable terminal welding equipment,
Opposing the conductor disposed at the connection location of the flat cable, the connection terminal is disposed on one surface of the resin film covering the conductor,
Provide a terminal side electrode provided with a contact formed to be smaller than the width of the conductor so that it can be pressed against the connection terminal facing the conductor of the connection location,
Provide a cable side electrode provided with a contact formed to be smaller than the width of the conductor so that it can be pressed against the other surface of the resin film facing the conductor of the connection location,
When the terminal side electrode is pressed against the connection terminal and the cable side electrode is pressed against the resin film, the connection terminal and the cable side electrode are pressed against the terminal side electrode and the cable side electrode. Providing a first energization means for energizing a necessary melting current necessary to generate heat at a temperature at which a part of the resin film melts;
An energization detecting means for detecting an electrical change between the electrodes, which occurs when a weak current is applied to the terminal side electrode and the cable side electrode, and the conductor and the connection terminal are brought into contact with each other in an energizable state. Provided,
Based on the detection signal output from the energization detection means, open or close the energization circuit connected to the electrodes,
As the energization circuit is opened or closed , the contact portion between the conductor and the connection terminal is resistance-welded to the terminal side electrode and the cable side electrode connected by the conductor and the connection terminal. the second energizing means for energizing the current required to provided,
The first energizing means;
A first energization means on the terminal side electrode connected to the terminal side electrode;
It is composed of the first energizing means on the cable side electrode side connected to the cable side electrode,
The exothermic temperature of the terminal side electrode is higher than the exothermic temperature of the cable side electrode.
The first energization means on the terminal side electrode side is configured to be able to energize the melting necessary current to the terminal side electrode,
The flat cable terminal welding apparatus , wherein the first energization means on the cable side electrode side is configured to be able to energize the necessary current for melting to the cable side electrode .

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