JP2012038722A - Method and device of connecting wire to terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device of connecting a wire to a terminal configured so that a terminal and the conductor of a wire can be connected reliably with high productivity.SOLUTION: The device 10 of connecting a wire to a terminal comprises a support base 16 on which a connector 50 is installed, a laser light irradiation means 44, and a moving means 11 for moving the support base and/or the laser light irradiation means. The support base 16 has a clamper 30 which retains the conductor of each wire to abut against a corresponding terminal in a state where the conductors of corresponding wires are mounted on respective terminals of the connector 50 while being matched. The moving means is configured to irradiate the abutting parts of the conductors of respective wires and the corresponding terminals sequentially with laser light by moving the support base and/or the laser light irradiation means.

Description

  The present invention relates to a method of connecting an electric wire to a terminal and a connection device for connecting a conductor of the electric wire to a terminal provided alone or in a connector.

  2. Description of the Related Art Conventionally, a plurality of terminals provided on a connector is connected to a corresponding wire conductor, and the connector is attached to the wire. As the electric wire, a flat cable or the like in which a plurality of electric wires are arranged in parallel and a resin sheet is welded on both surfaces thereof to form a band is also used.

  In addition, a conductor of an electric wire is connected to a single terminal, and this terminal is incorporated into a connector or the like.

  As a method for connecting the terminal and the electric wire, for example, a solder paste is applied to the terminal, the conductor of the electric wire is aligned with the terminal, and then the solder is melted, or the conductor of the electric wire is connected to the terminal. After matching, a method of caulking the terminal and connecting it to the conductor of the electric wire, a method of connecting the pressure contact terminal from the outside of the insulating coating of the electric wire, etc. are adopted.

  On the other hand, Patent Document 1 below discloses a method of connecting a crimp terminal and an electric wire using a laser. That is, a crimping terminal having a board part, a conductor crimping part erected from both sides of the board part, and a contact wall that can be laser welded standing from a predetermined position of the board part is used. The conductor of the electric wire is placed on the board, and the conductor tip is brought into contact with the abutting wall, and the conductor is crimped to fix the conductor, and then the laser is irradiated to the abutting wall and the tip of the conductor. The crimp terminal and the electric wire are connected by welding.

Japanese Patent No. 3019285

  However, in the conventional method of melting the solder in a state where the solder paste is applied to the connector terminals and the conductors of the wires are stacked, the wires of the connector are arranged in an extremely narrow pitch. There is a problem in that defective contact due to poor connection increases due to partial contact failure between the conductor and the solder or solder welding to adjacent terminals.

  Further, in the method of conducting the terminal and the conductor of the electric wire by soldering, crimping the terminal, or contact with the press contact terminal, there is a problem that the conduction resistance with respect to the high frequency voltage is large.

  On the other hand, in the method described in the above-mentioned Patent Document 1, since the laser is irradiated after the crimping terminal is crimped to fix the conductor, the connector terminals are arranged at an extremely narrow pitch. However, it is difficult to crimp the crimp terminal, and the above method may not be applied.

  Accordingly, an object of the present invention is to provide a method for connecting an electric wire to a terminal and a connection device that can connect the terminal and the conductor of the electric wire reliably and with high productivity.

  In order to achieve the above object, in the method of connecting the electric wire to the terminal to be connected by matching the conductor of the electric wire to the terminal, the terminal is installed on a support base, and the electric conductor of the electric wire is aligned and placed on the terminal, The wire conductor is pressed against the terminal by a clamper provided on the support base, and in that state, the contact between the wire conductor and the terminal is achieved by a laser irradiation device that can move relative to the support base. The part is irradiated with laser light, and the conductor of the electric wire and the terminal are welded.

  According to the above invention, since the laser welding is performed by pressing the conductor of the electric wire so as to contact the terminal with the clamper, the conductor and the terminal can be reliably welded. Moreover, since the conductor of a wire and a terminal are connected by welding, the conduction resistance with respect to a high frequency voltage can be made low. Furthermore, since the laser irradiation device that can move relative to the support base irradiates the laser beam onto the contact portion between the conductor of the electric wire and the terminal and welds the electric conductor and the terminal, a plurality of terminals and electric wires are connected. Sequential welding can be performed in an arrayed state, and productivity can be improved.

  In the method for connecting an electric wire to a terminal of the present invention, a connector in which a plurality of the terminals are arranged is installed on a support base, and the corresponding conductor of the electric wire is placed in alignment with each terminal of the connector, A clamper is used to hold the conductor of each wire in contact with the corresponding terminal, and in this state, the laser irradiation device sequentially irradiates the contact portion between the conductor of each wire and the corresponding terminal with each laser beam. It is preferable to weld the corresponding conductor and the corresponding terminal.

  According to this, since the laser welding is performed by pressing the conductor of the electric wire so as to contact the corresponding terminal by the clamper, the conductor and the terminal can be reliably welded. In addition, the laser irradiation device that can move relative to the support base sequentially welds the conductor of each wire and the corresponding terminal by irradiating laser light to the contact portion between the conductor of each wire and the corresponding terminal. , Productivity can be improved.

  In the method for connecting an electric wire to a terminal according to the present invention, a bent portion is provided at an end portion of the terminal, a conductor insertion portion is formed in the bent portion, and the conductor of the electric wire is used as the conductor insertion portion of the terminal. It is preferable to insert and hold and irradiate the laser beam toward the conductor insertion portion of the terminal.

  According to this, by holding the conductor of the electric wire in the conductor insertion portion provided in the bent portion of the terminal, the conductor of the electric wire and the terminal can be accurately aligned and arranged, and before the conductor is pressed by the clamper Can be prevented from shifting with respect to the terminal. Moreover, by irradiating the laser beam toward the conductor insertion portion of the terminal, the conductor of the electric wire and the terminal can be easily welded.

  In the connection method of the electric wire to the terminal of the present invention, a guide rib for positioning each electric wire is formed on the connector, the electric wire is inserted into the guide rib, and the conductor of the electric wire is connected to each corresponding terminal. It is preferable to hold it in alignment.

  According to this, by inserting each electric wire into the guide rib of the corresponding connector, the conductor of each electric wire can be held in alignment with the corresponding terminal.

  In the method for connecting an electric wire to a terminal according to the present invention, the clamper presses the leading end or the base end of the conductor of the electric wire, and irradiates the portion adjacent to the portion of the conductor pressed by the clamper. It is preferable. In addition, the base end part of the conductor in this invention means the base end part of the part which the conductor exposed from the insulation coating of the electric wire.

  According to this, by pressing down the leading end or the base end of the conductor of the electric wire with the clamper, it is possible to provide a portion where the conductor is exposed and overlaps the terminal on the base end side or the leading end side of the conductor, and the laser beam is emitted. By irradiating the portion adjacent to the portion pressed by the conductor clamper, the portion where the conductor is firmly in contact with the terminal can be welded, so that the connection can be made more reliable.

  In the method for connecting an electric wire to a terminal according to the present invention, it is preferable that the clamper has a through hole in which a portion where the conductor of the electric wire and the terminal overlap is exposed, and the laser beam is irradiated through the through hole.

  According to this, since the laser beam is irradiated through the through-hole of the clamper, both sides of the welded portion are pressed by the clamper, and it is possible to prevent the positional deviation between the conductor and the terminal more reliably and connect more. Can be sure.

  In the method for connecting an electric wire to a terminal according to the present invention, as the connector, a predetermined gap or connector is provided below the portion irradiated with the laser beam, which is a contact portion between the conductor of the electric wire and the terminal. It is preferable to use one having a penetrating through hole.

  According to this, even when the laser beam is irradiated and the temperature of the contact portion between the conductor of each electric wire and the corresponding terminal rises, the heat can be released by the air gap or the through hole, and the heat of the laser beam is reduced. Since direct transmission to the connector can be prevented, it is possible to prevent the connector from being softened or melted by heat and maintain the rigidity of the connector.

  In the method for connecting an electric wire to the terminal of the present invention, the gap or the through hole is formed so as to cover at least a region having a radius 0.75 times the spot diameter from the center of the laser beam irradiation spot. It is preferable.

  According to this, since the air gap or the through hole is formed so as to cover at least a region having a radius of 0.75 times the spot diameter from the center of the laser beam irradiation spot, the temperature rise is a significant part. The heat of the center of the irradiation spot and the outer periphery thereof can be effectively released.

  On the other hand, the wire connecting device to the terminal of the present invention is the wire connecting device to the terminal to be connected by matching the conductor of the wire to the terminal, a support base for installing the terminal, laser light irradiation means, A support base and / or a moving means for moving the laser light irradiation means, and the support base abuts the conductor of the electric wire on the terminal in a state where the conductor of the electric wire is placed in alignment with the terminal. A clamper for pressing, and the moving unit is configured to move the support base and / or the laser beam irradiation unit to irradiate the contact portion between the conductor of the electric wire and the terminal with the laser beam. It is characterized by being.

  According to the invention, the terminal is set on the support base, the conductor of the electric wire is aligned and placed on the terminal, the conductor of the electric wire is pressed against the terminal by the clamper and pressed, and in this state, the support base and / or Alternatively, by moving the laser light irradiation means and sequentially irradiating and welding the laser light to the contact portion between the conductor of the electric wire and the terminal, the electric wire can be connected to the terminal with good workability and surely. .

  In the wire connecting device to the terminal of the present invention, the support base is provided with a connector in which a plurality of the terminals are arranged, and the clamper aligns the conductor of the corresponding wire with each terminal of the connector. In this state, the conductor of each electric wire is pressed down so as to abut on the corresponding terminal, and the support means and / or the laser beam irradiation means are moved by the moving means, and the conductor of each electric wire and It is preferable that the abutting portion with the corresponding terminal can be sequentially irradiated with laser light.

  According to this, the connector is installed on the support base, the corresponding conductor of the electric wire is placed in alignment with each terminal of the connector, the electric conductor of the electric wire is pressed against the corresponding terminal of the connector by the clamper, and pressed. By moving the support base and / or the laser light irradiation means by the moving means in the state and welding the laser light sequentially to the contact portion between the conductor of each electric wire and the corresponding terminal, the electric wire is attached to the connector terminal. Good workability and reliable connection.

  In the apparatus for connecting an electric wire to a terminal according to the present invention, the terminal has a bent portion provided at an end thereof, and a conductor insertion portion is formed at the bent portion, and the clamper includes the electric wire It is preferable that the conductor is pressed down in a state where the conductor is inserted into the conductor insertion portion of the terminal.

  According to this, by holding the conductor of the electric wire in the conductor insertion portion provided in the bent portion of the terminal, the conductor of the electric wire and the terminal can be accurately aligned and arranged, and before the conductor is pressed by the clamper Can be prevented from shifting with respect to the terminal. Moreover, by irradiating the laser beam toward the conductor insertion portion of the terminal, the conductor of the electric wire and the terminal can be easily welded.

  In the apparatus for connecting an electric wire to a terminal according to the present invention, the connector has a guide rib for positioning each electric wire, and the conductor of the electric wire corresponds by inserting the electric wire into the guide rib. It is preferably configured to match each terminal.

  According to this, by inserting each electric wire into the guide rib of the corresponding connector, the conductor of each electric wire can be held in alignment with the corresponding terminal.

  In the apparatus for connecting an electric wire to a terminal according to the present invention, the clamper is configured to press down a distal end portion or a proximal end portion of a conductor of the electric wire, and the laser beam irradiation means transmits laser light with the clamper of the conductor. It is preferable to be configured to irradiate a portion adjacent to the depressed portion.

  According to this, by pressing down the leading end or the base end of the conductor of the electric wire with the clamper, it is possible to provide a portion where the conductor is exposed and overlaps the terminal on the base end side or the leading end side of the conductor, and the laser beam is emitted. By irradiating the portion adjacent to the portion pressed by the conductor clamper, the portion where the conductor is firmly in contact with the terminal can be welded, so that the connection can be made more reliable.

  In the apparatus for connecting an electric wire to a terminal according to the present invention, the clamper has a through hole in which an overlapping portion between the conductor of the electric wire and the corresponding terminal is exposed, and the laser beam irradiation means passes through the through hole. It is preferably configured to irradiate laser light.

  According to this, since the laser beam is irradiated through the through-hole of the clamper, both sides of the welded portion are pressed by the clamper, and it is possible to prevent the positional deviation between the conductor and the terminal more reliably and connect more. Can be sure.

  In the apparatus for connecting an electric wire to a terminal according to the present invention, the connector is a contact portion between the conductor of each electric wire and the corresponding terminal, and is provided below a portion irradiated with the laser light. It is preferable to have a through hole penetrating the gap or the connector.

  According to this, even when the laser beam is irradiated and the temperature of the contact portion between the conductor of each electric wire and the corresponding terminal rises, the heat can be released by the air gap or the through hole, and the heat of the laser beam is reduced. Since direct transmission to the connector can be prevented, it is possible to prevent the connector from being softened or melted by heat and maintain the rigidity of the connector.

  In the wire connecting device to the terminal of the present invention, the gap or the through hole is formed so as to cover at least a region having a radius of 0.75 times the spot diameter from the center of the irradiation spot of the laser beam. It is preferable.

  According to this, since the air gap is formed so as to cover at least a region having a radius of 0.75 times the spot diameter from the center of the laser light irradiation spot, the irradiation spot is a portion where the temperature rise is remarkable. The heat at the center and the outer periphery can be effectively released.

  According to the present invention, since the laser welding is performed by pressing the conductor of the electric wire with the clamper so as to contact the terminal, the conductor and the terminal can be reliably welded. In addition, the laser irradiation device that can move relative to the support base irradiates the contact portion between the conductor and terminal of the electric wire with laser light to weld the conductor and terminal of the electric wire, thus improving the productivity. be able to.

It is a top view which shows 1st Embodiment of the connection apparatus of the electric wire to the terminal which concerns on this invention. It is sectional drawing in the AA arrow line of FIG. It is a principal part enlarged plan view of the connection apparatus. It is a principal part enlarged side view of the connection apparatus. In the connection device, a state in which a terminal is held with a conductor of an electric wire and irradiated with laser light is shown. The modification of the terminal in the connection device is shown, (a) is a principal part expansion perspective view of the 1st modification, and (b) is a principal part expansion perspective view of the 2nd modification. It is a top view of the connector terminal and electric wire which were connected with the connection device. The 2nd Embodiment of the connection apparatus of the electric wire to the terminal which concerns on this invention is shown, (a) is the principal part expansion explanatory drawing, (b) is a principal part expansion perspective view. It is principal part expansion explanatory drawing which shows 3rd Embodiment of the connection apparatus of the electric wire to the terminal which concerns on this invention. It is principal part expansion explanatory drawing which shows 4th Embodiment of the connection apparatus of the electric wire to the terminal which concerns on this invention. It is principal part expansion explanatory drawing which shows 5th Embodiment of the connection apparatus of the electric wire to the terminal which concerns on this invention. It is principal part expansion explanatory drawing which shows the modification of 5th Embodiment. It is principal part expansion explanatory drawing which shows the other modification of the 5th Embodiment.

  Hereinafter, with reference to FIGS. 1-7, 1st Embodiment of the connection apparatus of the electric wire to the terminal which concerns on this invention is described.

  As shown in FIGS. 1 and 3, the connection device 10 for electric wires to terminals (hereinafter referred to as “connection device 10”) in this embodiment is flat on each terminal 54 of a connector 50 in which a plurality of terminals 54 are arranged. The conductors 74 of the corresponding electric wires 72 of the cable 70 are aligned and connected. The flat cable 70 is configured such that a plurality of electric wires 72 are arranged in parallel at predetermined intervals, and both surfaces thereof are sandwiched between heat-fusible resin films, and the resin films are fused to the electric wires to be integrated into a belt shape. Has been.

  As shown in FIG. 4, the connector 50 of this embodiment has a recess 52 having a predetermined depth, and a plurality of terminals 54 are arranged on the bottom surface of the recess 52 at predetermined intervals. Further, as shown in FIGS. 5A and 5B, a bent portion 56 is provided at the end of each terminal 54, and a groove-like conductor insertion portion 58 is provided at the center of the bent portion 56. It has a formed shape. And the conductor 74 of the corresponding electric wire 72 is inserted in this conductor insertion part 58, and the terminal 54 and the conductor 74 of the electric wire 72 are positioned.

  The shape of the end portion of the terminal 54 is not limited to the above-described form, and as shown in FIG. 6A, the bent portion 56 is bent obliquely with respect to the plane of the terminal 54, and the center portion thereof It is good also as a shape which provided the conductor insertion part 58, and as shown in FIG.6 (b), the extension part extended in a horizontal direction is provided in the both ends of the terminal 54, and this extension part is made into a substantially U shape. It is good also as a shape which made it bend | fold and set it as the bending parts 56 and 56, and provided the conductor insertion part 58 between them.

  Further, instead of providing the bent portion 56 and the conductor insertion portion 58 in the terminal 54, or providing the bent portion 56 and the conductor insertion portion 58 in the terminal 54, as shown in FIG. You may form the guide rib 60 for positioning each electric wire 72. FIG. Accordingly, the conductor 74 of the electric wire 72 can be aligned with the corresponding terminal 54 by inserting the electric wire 72 into the corresponding guide rib 60. The guide rib 60 may be a resin guide rib formed integrally with the connector housing, for example.

  And this connection apparatus 10 has the support stand 16 which supports the connector 50 and the flat cable 70, as shown in FIG.1 and FIG.2. In the case of this embodiment, the support base 16 is installed so as to be movable in a predetermined direction by the moving means 11. The moving means 11 includes a pair of support frames 12 and 12 and a pair of guide rails 14 and 14 installed between the frames 12 and 12 so as to be parallel to each other. The guide rails 14 and 14 are installed so as to be movable.

  One support frame 12 is provided with a motor 40 capable of rotation control, and a ball screw 42 interlocking with the drive shaft of the motor 40 screwes the support base 16 in parallel with the guide rails 14 and 14. It is inserted and arranged. Therefore, when the ball screw 42 is rotated by the motor 40, the support base 16 is moved along the guide rails 14 and 14, as indicated by arrows in FIG.

  As shown in FIGS. 2 and 3, block-like wall portions 18 and 18 are provided at a predetermined height on both sides in the width direction of one end in the longitudinal direction of the support base 16. A shaft hole 20 is formed in one wall portion 18, and a ball accommodation hole 22 is formed in the other wall portion 18.

  A ball 26 is inserted into the ball receiving hole 22 from the outside, and is held in a state of partially protruding from the inside opening. A coil spring 24 is inserted on the back side of the ball 26 and is prevented from coming off by a cap 27 screwed into the outer opening of the ball receiving hole 22 so that the ball 26 always protrudes from the inner opening. It is fast. The ball grip 21 is configured by the above structure having the ball 26 and the coil spring 24.

  A hinge shaft 34 is inserted into the shaft hole 20, and one end of a rod-shaped clamper 30 is rotatably supported by the hinge shaft 34. Referring also to FIG. 4, a grip portion 31 is provided at the other end of the clamper 30, and the grip portion 31 is gripped and rotated to be placed in alignment with each terminal 54 of the connector 50. The conductor 74 can be held down.

  That is, the clamper 30 of this embodiment has a base end portion 32 bent in an L shape, which is pivotally supported by a hinge shaft 34 inserted into the shaft hole 20, and the clamper 30 is vertically supported by the support base 16. It is pivotally mounted.

  Further, a pressing portion 36 protrudes downward from the lower surface of the central portion of the clamper 30. When the clamper 30 is rotated downward so as to be horizontal, it enters into the recess 52 of the connector 50, The conductor 74 of the electric wire 72 is pressed from above.

  Further, an engaging protrusion 38 protrudes downward from a predetermined position on the front end side of the clamper 30, and the ball 26 of the ball grip 21 is fitted on the surface of the wall 18. A joint recess 38a is formed, and when the clamper 30 is tilted horizontally and the conductor 74 is pressed down, it is locked in that state.

  As shown in FIGS. 1 and 2, a laser irradiation device 44 is disposed above the moving path of the support 16 by the moving means 11. The laser irradiation device 44 is provided with a laser irradiation port 46 directed downward, and when the support base 16 is moved by the moving means 11, each terminal 54 of the connector 50 and an electric wire 72 installed in alignment therewith. The portion that is overlapped with the conductor 74 and that is exposed adjacent to the portion pressed by the clamper 30 can be irradiated with laser light. In the case of this embodiment, the irradiation position of the laser beam is set so as to match the conductor insertion portion 58 of the terminal 54 of the connector 50 as shown in FIG. This laser irradiation device 44 constitutes the “laser light irradiation means” in the present invention.

  In this way, in this connection device 10, the support 16 is moved by the moving means 11, and the contact portion between the conductor 74 of each electric wire 72 of the flat cable 70 and the corresponding terminal 54 of the connector 50 is irradiated with laser. When positioned below the laser irradiation port 46 of the apparatus 44, the abutting portion between the conductor 74 and the terminal 54 is sequentially irradiated with laser light.

  Instead of moving the support base 16, the laser irradiation device 44 may be moved relative to the support base 16 to sequentially irradiate the contact portion between the conductor 74 and the terminal 54 with laser light. In this case, both the support 16 and the laser irradiation device 44 may be moved so that the contact portion between the conductor 74 and the terminal 54 is sequentially irradiated with laser light.

  Next, an embodiment of a method for connecting an electric wire to a terminal according to the present invention using the connection device 10 will be described.

  First, the clamper 30 is rotated upward, and the connector 50 is placed on the support base 16 so that the end portion where the terminals 54 of the connector 50 are arranged is positioned between the pair of wall portions 18 of the support base 16. Is placed.

  Next, the conductor 74 of the corresponding electric wire 72 of the flat cable 70 is inserted into the conductor insertion portion 58 provided in the bent portion 56 of each terminal 54, and the flat cable 70 is placed on the support base 16. As a result, the conductors 74 of the electric wires 72 are arranged on the corresponding terminals 54 so as to overlap each other.

  In this state, when the gripper 31 of the clamper 30 is held and the clamper 30 is rotated downward and pushed down so as to be horizontal, the pressing portion 36 of the clamper 30 enters the concave portion 52 of the connector 50, and a plurality of conductors The front end portion of 74 is pressed from above, and the front end portion of the conductor 74 is pressed down so as to contact the corresponding terminal 54 (see FIGS. 4 and 5). At the same time, the ball 26 urged by the coil spring 24 is fitted into the fitting recess 38a of the clamper 30, and is locked in a state where the clamper 30 is pushed down in the horizontal direction (see FIG. 3).

  Thus, by inserting and holding the conductor 74 of the electric wire 72 in the conductor insertion portion 58 of the terminal 54, the conductor 74 and the terminal 54 can be arranged in an exact alignment and before being pressed by the clamper 30. The conductor 74 can be prevented from being displaced with respect to the terminal 54.

  In this state, the motor 40 is activated, and the support base 16 is slid through the ball screw 42. When the conductor 74 and the terminal 54 are positioned below the laser irradiation port 46 of the laser irradiation device 44 (see the imaginary line in FIG. 1), the support base 16 is stopped and as shown in FIG. By irradiating the laser beam L from the laser irradiation port 46 toward the conductor insertion portion 58 of the terminal 54, the vicinity of the contact portion between the conductor 74 and the terminal 54 is melted, and both the conductor 74 and the terminal 54 are mutually connected. The welded portion M that has been welded is formed.

  After welding, the support base 16 is slid again, and the conductor 74 and the terminal 54 adjacent to the welded conductor 74 and the terminal 54 are aligned below the laser irradiation port 46, and the support base 16 is stopped to stop the laser beam. L is irradiated.

  By repeating the above operation and sequentially irradiating the contact portion between the conductor 74 of each electric wire 72 and the corresponding terminal 54 with the laser light L, as shown in FIG. 7, a plurality of terminals 54 of the connector 50, The conductors 74 of the plurality of electric wires 72 of the flat cable 70 are welded to each other.

  As described above, in this connection method, laser welding is performed in a state where the conductor 74 of the electric wire 72 is pressed against the corresponding terminal 54 by the clamper 30, so that the conductor 74 and the terminal 54 are securely connected. Can be welded. Moreover, since it is comprised so that a laser beam may be sequentially irradiated to the contact part of the terminal 54 corresponding to the conductor 74 of the electric wire 72 using the support stand 16 and the laser irradiation apparatus 44 which slide, each electric wire The 72 conductors 74 and the corresponding terminals 54 can be continuously and smoothly welded, and the productivity can be improved.

  Further, in this embodiment, as shown in FIG. 5A, the laser beam L is irradiated toward the conductor insertion portion 58 of the terminal 54, so the conductor 74 inserted into the conductor insertion portion 58 is configured. The pair of bent portions 56 and 56 holding the conductor 74 are easily melted by the laser light L, and the conductor 74 of the electric wire 72 and the terminal 54 are easily welded. Can do.

  Note that when the terminal 54 shown in FIGS. 6A and 6B is used, or when the resin guide rib 60 shown in FIG. 6C is used, the welded portion M is formed in the same manner as described above. The terminal 54 and the conductor 74 can be joined.

  Moreover, although the connection apparatus 10 in this embodiment is for connecting each conductor 74 of the electric wire 72 to each terminal 54 of the connector 50, it makes the shape of a support stand the shape which can hold | maintain an electric wire like a connector. Thus, a plurality of single terminals can be arranged on the support base, and a conductor of an electric wire can be connected to each of these terminals.

  FIG. 8 shows a second embodiment of the apparatus for connecting an electric wire to a terminal according to the present invention. Note that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the second embodiment, the shape of the clamper is different from that of the first embodiment. That is, as shown in FIG. 8B, the clamper 30a in the second embodiment is formed with a long hole-shaped through hole 33 extending along the longitudinal direction, and the conductor 74 of the electric wire 72 is connected by the clamper 30a. When pressed down so as to abut against the corresponding terminal 54, the overlapping portion of the conductor 74 of each wire 72 and the corresponding terminal 54 is exposed through the through hole 33 (FIG. 8A). reference).

  According to this embodiment, since the laser beam L is irradiated through the through-hole 33 provided in the clamper 30a, as shown in FIG. 8A, both sides of the welded portion are pressed by the clamper 30a. The positional deviation between the conductor 74 of each electric wire 72 and the corresponding terminal 54 can be prevented more reliably, and the connection can be made more reliable.

  In addition, you may use the connection apparatus and connection method which concern on this embodiment in order to connect the conductor of an electric wire to a single terminal.

  FIG. 9 shows a third embodiment of an apparatus for connecting an electric wire to a terminal according to the present invention. Note that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The third embodiment is different from the previous embodiment in the position where the conductor 74 of the electric wire 72 is pressed by the clamper 30. That is, in the third embodiment, as shown in FIG. 9, a portion adjacent to the portion where the base end portion of the conductor 74 of the electric wire 72 is pressed by the clamper 30 and the laser light L is pressed by the clamper 30 of the conductor 74. It is comprised so that it may irradiate.

  According to this embodiment, by pressing the proximal end portion of the conductor 74 of each electric wire 72 with the clamper 30, a portion where the conductor 74 is exposed and overlaps the corresponding terminal 54 is provided on the distal end side of the conductor 74. it can. Then, by irradiating the portion of the conductor 74 adjacent to the portion pressed by the clamper 30 with the laser beam L, the portion where the conductor 74 is firmly in contact with the terminal 54 can be welded, so that the connection can be made more reliable. it can.

  In addition, you may use the connection apparatus and connection method which concern on this embodiment in order to connect the conductor of an electric wire to a single terminal.

  FIG. 10 shows a fourth embodiment of the apparatus for connecting electric wires to terminals according to the present invention. Note that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the fourth embodiment, the shapes of the connector and the clamper are different from those in the previous embodiment. That is, the connector 50a according to the fourth embodiment has a shape in which a plurality of partition walls 53 are erected between a plurality of arranged terminals 54. Correspondingly, a plurality of connectors 50a are formed from the lower surface of the clamper 30b. The pressing portions 36a project in a comb shape, and the pressing portions 36a are arranged between the partition walls 53 and 53 so as to press the conductor 74 of the electric wire 72 from above with the clamper 30b pushed down. (See FIG. 10).

  In this embodiment, since the conductor 74 of the electric wire 72 is disposed between the partition walls 53 and 53, the clamper 30b is tilted and the conductor 74 is pressed down, so that the positional deviation between the conductor 74 and the terminal 54 is more effective. Can be prevented.

  11 to 13 show a fifth embodiment of an apparatus for connecting an electric wire to a terminal according to the present invention. Note that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The connector 50b in the fifth embodiment is a contact portion between the conductor 74 of each electric wire 72 and the corresponding terminal 54, and has a predetermined gap 59 below the portion irradiated with the laser light L. It has become.

  Specifically, as shown in FIG. 11, the connector 50 b supported on the support base 16 of the connection device 10 (see FIGS. 1 and 2) is for supporting the terminal 54 at a position facing the electric wire 72. The support part 55 is projected in a step shape along the arrangement direction of the terminals 54 (see FIG. 3). A plurality of terminals 54 are arranged on the support portion 55, and the conductor 74 of each electric wire 72 is inserted into the conductor insertion portion 58 of the bent portion 56 at the tip thereof. By being pressed, each conductor 74 is held in contact with the corresponding terminal 54, and a gap 59 is formed below the contact portion between the conductor 74 and the terminal 54 where the laser light L is irradiated. Is arranged.

  In the fifth embodiment, the laser beam L is irradiated toward the conductor insertion portion 58 of the terminal 54. When the center of the irradiation spot of the laser beam L at this time is C and the outer diameter of the spot is D, the gap 59 is a region having a radius 0.75 times the spot outer diameter D from the center C of the irradiation spot. X is formed so as to cover at least.

  Furthermore, this 5th Embodiment is not restricted to the form shown in FIG. 11, The form shown in FIG.12 and FIG.13 may be sufficient.

  In the modification of the fifth embodiment shown in FIG. 12, the bent portion 56 is not provided in the terminal 54 arranged on the support portion 55 of the connector 50b, and the conductor 74 of the electric wire 72 corresponding to the terminal 54 is provided. It has been arranged. In this modified example, the laser beam L is irradiated to a predetermined position of the contact portion between the conductor 74 of each electric wire 72 and the terminal 54 corresponding thereto, and the gap 59 is the center of the irradiation spot. From C, a region X having a radius 0.75 times the spot outer diameter D is formed so as to cover at least.

  In another modification of the fifth embodiment shown in FIG. 13, a groove portion 55 a having a predetermined depth is formed in the support portion 55 of the terminal 54 of the connector 50 along the arrangement direction of the terminals 54 (see FIG. 3). The terminal 54 is supported at two places on both sides of the groove 55a. In addition, the laser beam L is irradiated to a predetermined position of the contact portion between the conductor 74 of each electric wire 72 and the corresponding terminal 54 in the formation range of the groove portion 55a, and the connector portion 50b is formed by the groove portion 55a. A gap 59 is formed in the gap. The gap 59 is formed so as to cover at least a region X having a radius 0.75 times the spot outer diameter D from the center C of the irradiation spot.

  According to this embodiment, the connector 50b is a contact portion between the conductor 74 of each electric wire 72 and the corresponding terminal 54, and has a gap 59 below the portion irradiated with the laser light L. Therefore, even if the laser beam L is irradiated from the laser irradiation port 46 of the laser irradiation device 44 and the temperature of the contact portion between the conductor 74 of each electric wire 72 and the corresponding terminal 54 rises, heat is released by the gap. be able to. As a result, the heat of the laser beam L can be prevented from being directly transmitted to the connector 50b, the connector 50b can be prevented from being softened or melted by heat, and the rigidity of the connector 50b can be maintained. The conductor 74 can be securely connected.

  Further, the gap 59 is formed so as to cover at least the region X having a radius 0.75 times the spot outer diameter D from the center C of the irradiation spot of the laser beam L. The heat at the center of the irradiation spot and the outer periphery thereof can be effectively released.

  In the fifth embodiment, the gap 59 is provided in the connector 50b. However, instead of the gap 59, a through hole (not shown) that penetrates the connector 50b may be provided. In this case, the heat by the laser beam L is not transmitted to the connector 50b, and the advantage that the softening and melting of the connector 50b can be prevented more reliably is obtained.

DESCRIPTION OF SYMBOLS 10 Connection apparatus 11 of electric wire to connector terminal Moving means 12 Support frame 14 Guide rail 16 Support base 18 Wall part 20 Shaft hole 21 Ball grip 22 Ball accommodating hole 24 Coil spring 26 Ball | bowl 30,30a, 30b Clamper 32 Base end part 33 Transparent Hole 34 Hinge shaft 36, 36a Pressing part 38 Engaging protrusion 38a Fitting recess 40 Motor 42 Ball screw 44 Laser irradiation device 46 Laser irradiation port 50, 50a, 50b Connector 52 Recess 53 Partition 54 Terminal 55 Support 55a Groove 56 Bending Part 58 conductor insertion part 59 gap 60 guide rib 70 flat cable 72 electric wire 74 conductor M welded part

Claims (16)

In the method of connecting the wire to the terminal to be connected by matching the conductor of the wire to the terminal,
The terminal is placed on a support base, and the conductor of the electric wire is aligned and placed on the terminal,
With the clamper provided on the support base, the conductor of the electric wire is pressed down so as to contact the terminal,
In that state, the laser irradiation device capable of moving relative to the support base irradiates the contact portion between the conductor of the electric wire and the terminal with laser light, and welds the conductor of the electric wire and the terminal. How to connect the wires to the terminals to be used.   A connector in which a plurality of the terminals are arranged is installed on a support base, and the conductor of the corresponding electric wire is placed in alignment with each terminal of the connector, and the conductor of each electric wire is brought into contact with the corresponding terminal by the clamper. 2. In this state, the laser irradiation device sequentially irradiates the contact portion between the conductor of each electric wire and the corresponding terminal with the laser beam to weld the corresponding terminal of the electric wire to the corresponding terminal. How to connect the wires to the listed terminals.   A bent portion is provided at an end of the terminal, a conductor insertion portion is formed in the bent portion, the conductor of the electric wire is inserted and held in the conductor insertion portion of the terminal, and the laser beam is transmitted to the terminal. The connection method of the electric wire to the terminal of Claim 1 or 2 irradiated toward a conductor insertion part.   3. The terminal according to claim 2, wherein a guide rib for positioning each electric wire is formed on the connector, and the electric wire is inserted into the guide rib and held so that the conductor of the electric wire is aligned with the corresponding terminal. How to connect the wires.   5. The device according to claim 1, wherein the clamper presses a leading end portion or a base end portion of a conductor of the electric wire, and irradiates a portion of the conductor adjacent to the portion pressed by the clamper. How to connect wires to terminals.   The electric wire to the terminal according to any one of claims 1 to 4, wherein the clamper has a through hole in which a portion where the conductor of the electric wire and the terminal overlap is exposed, and irradiates the laser light through the through hole. Connection method.   The said connector is a contact part of the conductor and terminal of the said electric wire, Comprising: The thing which has a through-hole which penetrates a predetermined | prescribed space | gap or a connector below the part irradiated with the said laser beam is used. The connection method of the electric wire to the terminal as described in any one of -6.   The connection of the electric wire to the terminal according to claim 7, wherein the gap or the through hole is formed so as to cover at least a region having a radius of 0.75 times the spot diameter from the center of the irradiation spot of the laser beam. Method. In the connection device of the electric wire to the terminal that aligns and connects the conductor of the electric wire to the terminal,
A support base on which the terminal is installed, a laser light irradiation means, and a moving means for moving the support base and / or the laser light irradiation means,
The support base has a clamper that presses the conductor of the electric wire so as to contact the terminal in a state where the electric conductor of the electric wire is aligned and placed on the terminal.
To the terminal characterized in that the moving means is configured to move the support base and / or the laser light irradiation means to irradiate the contact portion between the conductor of the electric wire and the terminal. Electric wire connection device.   A connector in which a plurality of the terminals are arranged is installed on the support base, and the conductor of each electric wire corresponds to each terminal of the connector with the clamper placed in alignment with the corresponding electric wire conductor. The support means and / or the laser light irradiation means are moved by the moving means so that the laser light is sequentially applied to the contact portions between the conductors of the electric wires and the corresponding terminals. The connection device of the electric wire to the terminal according to claim 9 configured so that irradiation is possible.   The terminal has a bent portion at an end thereof, and a conductor insertion portion is formed at the bent portion, and the clamper is in a state where the conductor of the electric wire is inserted into the conductor insertion portion of the terminal. The device for connecting an electric wire to a terminal according to claim 9 or 10, wherein the device is configured to hold down the conductor.   A guide rib for positioning each electric wire is formed in the connector, and the conductor of the electric wire is configured to be aligned with a corresponding terminal by inserting the electric wire into the guide rib. A device for connecting an electric wire to a terminal according to 9.   The clamper is configured to hold down the distal end portion or the base end portion of the conductor of the electric wire, and the laser beam irradiation means irradiates a portion of the conductor adjacent to the portion pressed by the clamper. The device for connecting an electric wire to a terminal according to any one of claims 9 to 12, which is configured.   The clamper has a through hole in which an overlapping portion between a conductor of a wire and a corresponding terminal is exposed, and the laser beam irradiation unit is configured to irradiate the laser beam through the through hole. The connection apparatus of the electric wire to the terminal as described in any one of 9-12.   The connector is a contact portion between the conductor of each electric wire and the corresponding terminal, and has a through hole that penetrates a predetermined gap or connector below the portion irradiated with the laser beam. The connection apparatus of the electric wire to the terminal as described in any one of Claims 10-14.   The gap or the through hole is formed so as to cover at least a region having a radius of 0.75 times the spot diameter from the center of the laser beam irradiation spot. Connected device.