JP2019117704A - Conductive metal terminal, aluminum wire with conductive metal terminal, and method of manufacturing aluminum wire with conductive metal terminal - Google Patents

Abstract

To provide a conductive metal terminal in which electrical connection with an aluminum wire is easily ensured.SOLUTION: A conductive metal terminal 1 includes: a connection 11 connected to other apparatus; a support 12 conducted with the connection 11 and supporting an aluminum wire 2; and a lid 13 covering at least a partial area of the aluminum wire 2 that is supported by the support 12. The lid 13 fixes the aluminum wire 2 to the support 12 by the application of force that presses toward the support 12. The conductive metal terminal further includes a coupling part 14 for coupling the lid 13 and the support 12, and the coupling part 14 separates between the lid 13 and the support 12 by the application of force on the lid 13, the force pressing toward the support 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a conductive metal terminal, an aluminum wire with a conductive metal terminal, and a method of manufacturing an aluminum wire with a conductive metal terminal.

  Conventionally, a wire made of copper or copper alloy was mainly used as a wire harness for automobiles, but in recent years, the core was changed from copper or the like to aluminum or an aluminum alloy in order to reduce the weight of the vehicle body. The proportion of using aluminum wires is increasing. In Patent Document 1, the aluminum conductor of the aluminum wire is placed on the connection portion of the copper terminal, and the terminal end of the aluminum conductor is melted by a resistance welder or an ultrasonic welder to conduct electricity to the connection portion of the copper terminal It is disclosed that the connection is made.

Patent No. 4825906

  When joining an aluminum electric wire and a conductive metal terminal, loosening occurs with time by simple pressure bonding (caulking), and sufficient contact between the aluminum electric wire and the conductive metal terminal can not be ensured, and a stable electrical connection is ensured. There was a problem that was difficult to do. Although resistance welding and ultrasonic bonding are also considered, there are problems of generation of welding debris scattering, failure of the horn tip and uneven bonding.

  Then, this invention is made in view of these points, and an object of this invention is to provide the conductive metal terminal which is easy to ensure the stable electrical connection with an aluminum electric wire.

  In the first aspect of the present invention, at least a portion of a connecting portion to be connected to another device, a supporting portion electrically connected to the connecting portion and supporting the aluminum wire, and an aluminum wire supported by the supporting portion And a lid covering the area of the conductive metal terminal.

  Moreover, the said lid part may fix the said aluminum electric wire to the said support part by the pressing force applied toward the said support part. The lid and the support may further include a joint that couples the lid and the support, wherein the joint exerts a pressing force on the lid toward the support. And may be separated.

  In addition, it further has a connecting portion that connects the lid and the support, and the connecting is such that the lid is made of the aluminum electric wire by applying a pressing force to the lid toward the support. The state in which the lid and the support are coupled may be maintained in contact with the cover.

  Moreover, the groove | channel extended in the direction orthogonal to the direction by which the said cover part is pushed toward the said support part may be formed in the said connection part. Moreover, it may be provided in the edge part on the opposite side to the side in which the said connection part of the said support part is provided, and you may further have a clamping part which fixes the said aluminum electric wire.

  Moreover, the said support part may have a bottom part in which the said aluminum wire is mounted, and the side part formed in the both ends of the said bottom part. Further, the lid portion is provided at a position where the aluminum electric wire is not in contact with the side surface portion in a state where the aluminum electric wire is fixed to the support portion by application of a pressing force of the lid portion toward the support portion. May be

  In addition, a hole may be formed in at least one of the bottom portion or the side surface portion. Moreover, the said cover part may have a protrusion formed in the surface by the side of the said support part.

  The lid may have a plurality of engaging portions, and the support may have a plurality of holes into which the plurality of engaging portions are inserted.

  According to a second aspect of the present invention, there is provided an aluminum wire, and a conductive metal terminal fixed to the aluminum wire, the conductive metal terminal being connected to an electrical device, and the connection portion. An aluminum wire with a conductive metal terminal characterized by comprising: a support portion electrically connected to the aluminum wire; and a lid portion covering at least a partial region of the aluminum wire supported by the support portion. provide.

  In the third aspect of the present invention, a step of preparing an aluminum wire, a connection portion connected to an electrical device, a support portion electrically connected to the connection portion and supporting the aluminum wire, and supported by the support portion Preparing a conductive metal terminal having a lid portion covering at least a partial region of the aluminum wire, mounting the aluminum wire on the support portion, and moving the lid portion to the support portion The step of fixing a partial region of the aluminum wire supported by the support portion by the support portion and the lid portion by pressing the support portion, and the step of fixing the aluminum wire after the step of fixing And a step of bonding to a lid, and a method of manufacturing an aluminum wire with a conductive metal terminal is provided.

  Moreover, you may further have the process of fixing the said aluminum electric wire to the said electroconductive metal terminal in the clamping part which the said electroconductive metal terminal has before the process of fixing.

  ADVANTAGE OF THE INVENTION According to this invention, it is effective in the electrically-conductive metal terminal being easy to ensure electrical connection with an aluminum electric wire.

The structure of the aluminum wire with a conductive metal terminal which concerns on 1st Embodiment is shown. The structure which looked at the structure of the aluminum wire with a conductive metal terminal shown in FIG. 1 from direction of A is shown. It is a sectional view of an aluminum electric wire with a conductive metal terminal. The structure of the aluminum wire with a conductive metal terminal which concerns on 2nd Embodiment is shown. The structure which looked at the structure of the aluminum wire with a conductive metal terminal shown in FIG. 4 from the direction of B is shown. The structure of the cover part which concerns on 2nd Embodiment is shown.

First Embodiment
[Outline of aluminum wire S with conductive metal terminal]
FIG. 1 is a view showing the configuration of an aluminum electric wire S with a conductive metal terminal according to the first embodiment. FIG. 2 is a view showing the configuration of the aluminum wire S with a conductive metal terminal shown in FIG. 1 as viewed from the direction of A. As shown in FIG. FIG. 3 is a cross-sectional view of the aluminum wire S with a conductive metal terminal.

  The aluminum wire S with a conductive metal terminal is a wire in which the conductive metal terminal 1 is provided on the aluminum wire 2.

Conventionally, when joining a terminal to an electric wire, the following three joining methods are used.
1) Bonding by pressure bonding 2) Bonding by resistance welding 3) Bonding by ultrasonic wave Hereinafter, each bonding method will be described.

1) Bonding by crimping The bonding by crimping, for example, insert the end of the wire into the inside of the terminal and hold the end of the wire between the terminals by applying a force to push the terminal from the outside of the terminal. It is a bonding method to adhere. In the case of bonding by pressure bonding, stress relaxation occurs, and the strength at the bonding portion is weakened, and the resistance due to the generation of a gap is increased. For example, in the case of dissimilar metals such as aluminum wire-copper terminal junction, electrolytic corrosion occurs. As a result, in addition to the instability of the electrical characteristics, the contact resistance may increase, the electrical resistance may increase due to the reduction of the wire diameter, and the wire may be broken. In order to cope with this, it is necessary to apply a coating to the joint, but this is not sufficient.

2) Joining by resistance welding Resistance welding is a state in which the welding members are held between electrodes in a state where metal members of the welding members are superposed, and an appropriate pressure is applied to flow an electric current to contact resistance of the welding portion. This is a metal bonding method in which members to be welded are melted and bonded by the generated Joule heat. In the case of joining by resistance welding, it is necessary to clean because molten aluminum adheres to the electrode. In addition, as in the pressure bonding, electrolytic corrosion occurs, the electrical characteristics become unstable, and the contact resistance may increase, the electric resistance may decrease due to the reduction of the wire diameter, and a break may occur.

3) Ultrasonic bonding Ultrasonic bonding is to remove impurities from the surface layer by removing the oxide film on the metal surface by applying ultrasonic vibration to the members to be bonded, thereby utilizing the attraction between metal atoms. Is a bonding method that produces a solid phase bonding state. In the case of using ultrasonic bonding, there is a risk that the electric wire may be damaged when the horn emitting the ultrasonic wave generated by the ultrasonic transducer contacts the electric wire. The horn is a resonator for transmitting vibrational energy.

  The aluminum electric wire S with a conductive metal terminal can cope with the problem which arises in each joining method of the terminal of 1)-3), and an electric wire. Hereinafter, the structure of the aluminum electric wire S with a conductive metal terminal which concerns on 1st Embodiment is demonstrated.

[Configuration of aluminum wire S with conductive metal terminal]
The aluminum wire S with a conductive metal terminal has a conductive metal terminal 1 and an aluminum wire 2. The conductive metal terminal 1 is made of, for example, aluminum, copper, nickel, or stainless steel. The conductive metal terminal 1 is fixed to the aluminum wire 2. Details of the configuration of the conductive metal terminal 1 will be described later.

  The aluminum electric wire 2 is, for example, an aluminum stranded wire 21. The aluminum electric wire 2 is, for example, circular in cross section. The aluminum stranded wire 21 is an electric wire in a state in which a plurality of thin aluminum wires 211 are put together and covered with a covering portion 212.

  The conductive metal terminal 1 has a connection portion 11, a support portion 12, a lid portion 13, a coupling portion 14, and a holding portion 15. The connection unit 11 is a portion connected to another device. Another device is, for example, an electric device. The connection portion 11 is formed with, for example, a hole, and is connected to the electric device by inserting and tightening a screw in the hole and a hole formed in the electric device.

  The support portion 12 is a portion which is electrically connected to the connection portion 11 and supports the aluminum electric wire 2. The support portion 12 desirably has a substantially U-shaped cross section, a rounded substantially V-shaped bottom, or a flat bottom region. The support portion 12 is in contact with a plurality of aluminum wires 211 from which the covering portion 212 of the aluminum stranded wire 21 has been peeled off.

  The support 12 has a bottom 121 and a side 122. Bottom portion 121 is a portion on which aluminum wire 2 is placed. The side surface portions 122 are formed at both ends of the bottom portion 121. Specifically, the side surface portion 122 has a left side surface portion 123 and a right side surface portion 124. The left side surface portion 123 is formed to be orthogonal to the bottom portion 121 from the left end of the bottom portion 121. The right side surface portion 124 is formed to be orthogonal to the bottom portion 121 from the right end of the bottom portion 121.

  Since the support portion 12 is configured to have the bottom portion 121 and the side surface portions 122 formed at both ends of the bottom portion 121 in this way, for example, the resistance metal of the conductive metal terminal 1 and the aluminum wire 2 is melted. Aluminum can be prevented from flowing out of the conductive metal terminal 1. Further, in the support portion 12 having the bottom portion 121 and the side surface portion 122, the bonding area between the conductive metal terminal 1 and the aluminum wire 2 is increased as compared with the case where the support portion 12 is formed only by the bottom portion 121. As a result, the connection between the support 12 and the aluminum electric wire 2 can be further strengthened, and the electrical connection can be easily secured.

  In addition, a hole 125 is formed in at least one of the bottom portion 121 and the side surface portion 122. When conductive metal terminal 1 and aluminum wire 2 are joined, conductive metal terminal 1 has a hole 125 from the inside of support portion 12 when molten aluminum wire 2 is bonded. By flowing out to the outside of the support portion 12 through the portion 125, the molten aluminum can be prevented from scattering toward the connection portion 11 and adhering to the connection portion 11.

  The lid 13 is a portion that covers at least a part of the area of the aluminum electric wire 2 supported by the support 12. The lid 13 is located above the bottom 121 in the direction orthogonal to the bottom 121.

  The lid 13 fixes the aluminum electric wire 2 to the support 12 by applying a pressing force toward the support 12. Specifically, the cover 13 is pressed toward the support 12 so that the surface on the support 12 side of the cover 13 is in contact with a partial region of the aluminum wire 2, and a portion of the aluminum wire 2 is The region is fixed by being sandwiched between the bottom 121 of the support 12 and the lid 13.

  As a result of the lid 13 being applied with a pressing force toward the support 12 in this manner, gaps between the plurality of aluminum wires 211 and the support 12 and a plurality of aluminum wires 211 of the aluminum stranded wire 21 are obtained. It is possible to make it difficult to create a gap. As described above, when the conductive metal terminal 1 has the lid 13, the conductive metal terminal 1 makes the connection with the aluminum wire 2 stronger, and the electrical connection is easily secured.

  Moreover, the lid 13 may have a protrusion 131 formed on the surface on the side of the support 12. The protrusion 131 has, for example, a smooth substantially hemispherical shape. As shown in FIG. 3, in the state where the lid 13 is joined to the aluminum wire 2 placed on the support 12, the protrusion 131 is buried in the aluminum wire 2. In the conductive metal terminal 1, the aluminum wire 2 is supported by the support 12 and the cover 13 by applying a force to press the cover 13 toward the support 12 by providing the protrusion 131 in the cover 13. And the protrusion 131 can be inserted into the inside of the aluminum electric wire 2. Further, the conductive metal terminal 1 can increase the contact area between the lid 13 and the aluminum electric wire 2 because the lid 13 has the protrusion 131.

  Therefore, the conductive metal terminal 1 can be made to flow an electric current from the inside of the aluminum electric wire 2 to the aluminum electric wire 2 at the time of resistance welding, for example by the cover part 13 having the protrusion 131. As a result, in the conductive metal terminal 1, the protrusion 131 is provided on the lid 13, so that the effect of uniformly transmitting heat to the aluminum electric wire 2 is improved.

  In addition, as shown in FIG. 3, the lid 13 has the side surface 122 in a state where the aluminum electric wire 2 is fixed to the support 12 even after the lid 13 is pressed against the support 12. It is provided in the position which does not contact it. Specifically, the lid 13 is brought into contact with the aluminum electric wire 2 by the application of a pressing force toward the support 12 and the aluminum electric wire 2 is fixed to the supporter 12, The end on the left side 123 of the cover 13 is not in contact with the left side 123, and the end on the right side 124 of the lid 13 is not in contact with the right side 124.

  The conductive metal terminal 1 is provided at a position where the lid 13 does not contact the side surface 122 in this way, so that the lid 13 and the support 12 are joined when bonding to the aluminum electric wire 2 by, for example, resistance welding. A current can be supplied to the aluminum wire 2 without shorting. Further, the conductive metal terminal 1 is provided at the position where the lid 13 does not contact the side surface 122 in this way, so that the vibrating region of the lid 13 is joined when joining to the aluminum electric wire 2 by ultrasonic bonding. It can be secured.

  In a state in which the aluminum wire 2 is not placed on the support 12 of the conductive metal terminal 1 in order to facilitate placing a partial region from the tip of the aluminum wire 2 on the support 12, the tip of the lid 13 The distance between the and the bottom 121 is greater than the diameter of the aluminum wire 2.

  Further, the distance between the end of the lid 13 opposite to the connection 11 and the distance between the end of the lid 13 and the bottom 121 in the direction orthogonal to the bottom 121 is larger than the end of the lid 13 at the connection 11 side. So it is inclined. With the lid 13 having such a configuration, the conductive metal terminal 1 can easily insert the tip of the aluminum electric wire 2 between the support 12 and the lid 13.

  Moreover, the distance in the direction orthogonal to the bottom 121 between the tip of the lid 13 that is inclined and the bottom 121 is larger than the diameter of the aluminum wire 2, and the middle part and bottom of the lid 13 that is inclined The distance in the direction orthogonal to the bottom 121 between 121 and 121 can also be equal to the diameter of the aluminum electric wire 2. With the lid 13 having such a configuration, when the tip of the aluminum wire 2 is inserted between the support 12 and the lid 13 of the conductive metal terminal 1, the tip of the aluminum wire 2 is the lid The tip of the aluminum electric wire 2 can be positioned by contacting the middle portion 13.

  The coupling portion 14 is a portion that couples the lid portion 13 and the support portion 12. The lid 13 is formed integrally with the support 12 by being coupled to the support 12 by the joint 14. The joint 14 separates the space between the lid 13 and the support 12 by applying a pressing force toward the support 12 to the lid 13. The coupling portion 14 is coupled at one end to the bottom portion 121 and at the other end to the lid 13. The joint portion 14 has, for example, a curved region projecting outward between the bottom portion 121 and the lid portion 13. In the direction perpendicular to the bottom portion 121, at least a part of the surface of the lid portion 13 on the bottom portion 121 side of the coupling portion 14 is positioned higher than the upper end of the aluminum wire 2 placed on the bottom portion 121. As in the case of FIG.

  The coupling portion 14 is formed with a groove 141 extending in a direction orthogonal to the direction in which the lid portion 13 is pushed toward the support portion 12. For example, the groove 141 is formed in a curved area of the coupling portion 14. The direction in which the groove 141 extends is, for example, substantially parallel to the surface of the bottom 121 on the lid 13 side. The groove 141 is formed, for example, on the outside of the coupling portion 14.

  Since the groove 141 is formed in the joint portion 14, the joint portion 14 separates the space between the lid portion 13 and the support portion 12 by applying a pressing force toward the support portion 12 to the lid portion 13. The conductive metal terminal 1 applies the voltage for resistance welding between the lid 13 and the support 12 by separating the lid 13 from the support 12, thereby the lid 13 and the support 12 The current can flow through the aluminum wire 2 without short circuit.

  The holding portion 15 is provided at an end portion of the support portion 12 opposite to the side where the connection portion 11 is provided, and is a portion to which the aluminum electric wire 2 is fixed. The sandwiching portion 15 has, for example, a substantially U-shaped cross section, and can fix the aluminum electric wire 2 inside the sandwiching portion 15. The clamping unit 15 has a bottom 151, a left side 152 and a right side 153. Bottom portion 151 is a portion on which aluminum wire 2 is placed. The left side surface portion 152 is a portion extending upward from the left end of the bottom portion 151. The right side surface portion 153 is a portion extending upward from the right end of the bottom portion 151.

  The sandwiching portion 15 is placed inside the sandwiching portion 15 by applying a force so as to bring the end portions of both sides of the sandwiching portion 15 closer in a state where the aluminum electric wire 2 is placed inside the sandwiching portion 15 The aluminum electric wire 2 is fixed to the conductive metal terminal 1 by holding the aluminum electric wire 2. Specifically, in the state where the aluminum electric wire 2 is placed on the bottom portion 151, the holding portion 15 has an end portion on the opposite side to the side connected to the bottom portion 151 of the left side surface portion 152 and the bottom portion of the right side surface portion 153 A force is applied to bring the end of the wire 151 close to the end opposite to the side connected thereto, thereby sandwiching and fixing the aluminum wire 2.

  Thus, the conductive metal terminal 1 has the sandwiching portion 15 separately from the support portion 12 and the lid portion 13, thereby joining the aluminum wire 2 to the support portion 12 and the lid portion 13 by resistance welding or ultrasonic waves. The aluminum electric wire 2 can be prevented from moving while the work is performed. Moreover, the conductive metal terminal 1 can make the connection between the conductive metal terminal 1 and the aluminum electric wire 2 stronger by the holding portion 15 of the conductive metal terminal 1.

  As described above, the conductive metal terminal 1 has the lid 13 that covers at least a part of the area of the aluminum wire 2 supported by the support 12. Therefore, the conductive metal terminal 1 can be a terminal that can effectively realize resistance welding or ultrasonic bonding when bonding to the aluminum electric wire 2. The effects in the case of resistance welding or in the case of ultrasonic welding will be specifically described below.

In the case of resistance welding, specifically, the following effects can be obtained.
The conductive metal terminal 1 having the cover 13 facilitates heat to be uniformly transmitted to the aluminum electric wire 2 at the time of resistance welding. In addition, the conductive metal terminal 1 having the cover 13 makes it difficult for aluminum melted at the time of resistance welding to adhere to the connection portion 11. Moreover, the conductive metal terminal 1 can improve the bonding strength between the conductive metal terminal 1 and the aluminum electric wire 2 by having the lid portion 13.

Further, in the case of bonding by ultrasonic waves, specifically, the following effects are obtained.
The conductive metal terminal 1 having the lid 13 can uniformly transmit the ultrasonic wave emitted from the tip horn of the ultrasonic bonding device to the aluminum electric wire 2. For example, when the conductive metal terminal 1 does not have the lid portion 13, the contact surface between the tip horn of the ultrasonic bonding device and the aluminum electric wire 2 becomes uneven, and corrosion resistance is reduced or disconnection occurs, resulting in electrical characteristics. Change will occur.

  Further, in the case of bonding by ultrasonic waves, the lid 13 is solid-phase bonded to the aluminum electric wire 2 to add to the area of the solid-phase bonding between the conductive metal terminal 1 and the aluminum wire 2 and the lid 13 is solid-phased. Increase the area of the bond. Therefore, when the aluminum electric wire 2 is joined to the conductive metal terminal 1 by the ultrasonic wave, the aluminum electric wire 2 is solid phase bonded to the lid 13 and the support 12 and aluminum is held while maintaining the strength against bending of the aluminum electric wire 2 The strength at the time of joining the electric wire 2 and the conductive metal terminal 1 can be improved.

  Thus, the aluminum wire S with a conductive metal terminal can be a terminal suitable for joining by resistance welding and joining by ultrasonic waves. Further, by using the conductive metal terminal 1, the electrical connection between the conductive metal terminal 1 and the aluminum wire 2 can be easily secured.

[Method of manufacturing aluminum wire S with conductive metal terminal]
Hereinafter, the manufacturing method of the aluminum wire S with a conductive metal terminal which concerns on 1st Embodiment is demonstrated.
First, the aluminum wire 2 is prepared. Next, the conductive metal terminal 1 is prepared. Next, after the aluminum electric wire 2 is placed on the support portion 12, a force is applied so that the left side surface portion 152 and the right side surface portion 153 approach to sandwich the aluminum electric wire 2 in the sandwiching portion 15.

  Next, the lid 13 is pushed toward the support 12 to support a portion of the aluminum wire 2 supported by the support 12 (that is, a region to be bonded to the support 12 and the lid 13). It fixes with 12 and the cover part 13. Next, the aluminum electric wire 2 is joined to the support 12 and the lid 13. As a method of bonding the aluminum electric wire 2 to the support portion 12 and the lid portion 13, for example, bonding by resistance welding or bonding by ultrasonic waves can be used. When joining by resistance welding is performed, a predetermined current is caused to flow between the support 12 and the lid 13. Moreover, when joining by an ultrasonic wave is performed, the horn which emits the ultrasonic wave which the ultrasonic transducer produced | generated is hit on the cover part 13. As shown in FIG. Thus, the aluminum wire S with a conductive metal terminal is manufactured.

  If the conductive metal terminal 1 does not have the sandwiching portion 15, the aluminum wire 2 is mounted on the support portion 12, and then the lid 13 is pushed toward the support portion 12 to fix the aluminum wire 2. You may

Second Embodiment
FIG. 4 is a view showing the configuration of an aluminum electric wire Sa with a conductive metal terminal according to a second embodiment. FIG. 5 is a view showing the configuration of the aluminum wire Sa with a conductive metal terminal shown in FIG. 4 as viewed from the direction of B. As shown in FIG. FIG. 6 is a view showing the configuration of a lid 13a according to the second embodiment. Fig.6 (a) is a figure which shows the structure which looked at the cover part 13a which concerns on 2nd Embodiment from the front side. FIG. 6B is a view showing the configuration of the lid 13a according to the second embodiment as viewed from the back side.

  As compared with the aluminum wire S with conductive terminal according to the first embodiment, the aluminum wire Sa with conductive terminal according to the second embodiment has the left side surface hole portion 126a and the right side surface hole portion 127a in the support portion 12a. It differs in that it has a lid 13a instead of the lid 13 and the joint 14 which are formed.

  The left side surface hole portion 126 a is a hole formed in the left side surface portion 123. The right side surface hole portion 127 a is a hole formed in the right side surface portion 124. The left side hole 126a is a hole into which the left engaging portion 133a of the lid 13a is inserted. The right side surface hole portion 127a is a hole into which the right engaging portion 134a of the lid portion 13a is inserted. The lid 13 a is a portion that covers at least a partial region of the aluminum electric wire 2 supported by the support 12 a as the lid 13 is. The lid 13a is not a part other than the lid 13a of the conductive metal terminal 1a, for example, the connecting portion 11, the support 12a, and the sandwiching portion 15, and is a separate member from these members. .

  The lid 13a has a lid body 132a, a left engaging portion 133a, a right engaging portion 134a, a groove 135a, a protrusion 136a, and a restricting portion 137a. The lid main body 132a is a portion covering at least a part of the area of the aluminum electric wire 2 supported by the support 12a. Specifically, the lid body 132a is a portion that contacts at least a part of the area of the aluminum electric wire 2 supported by the support 12a from above. The left engaging portion 133a is a protrusion inserted into the left side surface hole portion 126a. The left engaging portion 133a is formed at the left end of the lid body 132a in the lateral direction. The right engagement portion 134a is a protrusion inserted into the right side surface hole portion 127a. The right engagement portion 134a is formed at the right end in the short direction of the lid body 132a.

  The lid portion 13a is placed above the aluminum wire 2 so as to cover at least a partial region of the aluminum wire 2 supported by the support portion 12a, the left engaging portion 133a is provided with the left side surface hole portion 126a. The right engagement portion 134a is inserted into the right side surface hole portion 127a. The conductive metal terminal 1a has the lid 13a having a plurality of engaging portions in this manner, and the support 12a has a plurality of holes into which the plurality of engaging portions are inserted. At the time of joining with the aluminum electric wire 2, for example, at the time of resistance welding or joining by ultrasonic waves, it is possible to prevent the lid 13a from moving significantly.

  Further, the left side surface hole portion 126a has a first region 1261a and a second region 1262a. The first area 1261a is an area located above the left side surface hole portion 126a. The width of the first region 1261a is substantially the same as the width of the left engaging portion 133a, or slightly smaller than the width of the left engaging portion 133a. The second area 1262a is an area located below the first area 1261a in the left side surface hole portion 126a. The width of the second area 1262a is larger than the width of the first area 1261a.

  Further, the right side surface hole portion 127a has a first area 1271a and a second area 1272a. The first area 1271a is an area located on the upper side of the right side surface hole portion 127a. The width of the first region 1271a is substantially the same as the width of the right engagement portion 134a or slightly smaller than the width of the right engagement portion 134a. The second area 1272a is an area located below the first area 1271a in the right side surface hole portion 127a. The width of the second area 1272a is larger than the width of the first area 1271a.

  Thus, the left side hole 126a and the right side hole 127a have a first area 1261a, 1271a having a width substantially the same as the width of the left engaging part 133a and the right engaging part 134a, and a first area 1261a, 1271a. It has a second area 1262a, 1272a wider than the first area 1261a, 1271a below the lower side. Therefore, in the left side surface hole portion 126a and the right side surface hole portion 127a, the left engaging portion 133a and the right engaging portion 134a are press-fit into the first area 1261a and the first area 1271a located above, respectively. The positioned second regions 1262a and 1272a are easy to move the left engagement portion 133a and the right engagement portion 134a, respectively.

  When the conductive metal terminal 1a pushes the lid 13a toward the support 12a, the left engagement part 133a is located in the second area 1262a, and the right engagement part 134a is located in the second area 1272a. . As a result, the conductive metal terminal 1a is formed between the left engaging portion 133a of the cover 13a and the edge of the left side hole 126a, and the edge of the right engaging portion 134a of the cover 13a and the right side hole 127a. Can create a gap between them and allow current to flow through the aluminum electric wire 2 without short-circuiting the lid 13a and the support 12a at the time of resistance welding, and secure the vibration region of the lid 13a at the time of ultrasonic bonding. be able to.

  In addition, the right engagement portion 134a is inserted into the remaining area of the left side hole 126a in a state where the left engagement portion 133a is inserted into the left side hole 126a, for example, the second region 1262a and the right side hole 127a. In the remaining region of the right side surface hole portion 127a in the folded state, for example, the second region 1272a, when the conductive metal terminal 1a and the aluminum wire 2 are joined, the melted aluminum of the aluminum wire 2 is inside the support portion 12a. To the outside of the support 12a. As a result, the conductive metal terminal 1 a can prevent molten aluminum from scattering toward the connection portion 11 and adhering to the connection portion 11.

  The groove 135a is a groove formed in the lid main body 132a. The groove 135a extends, for example, in the longitudinal direction of the lid main body 132a. The protrusion 136a is at least one surface of the aluminum wire 2 in a state in which the protrusion 13a is placed so as to cover at least a partial region of the aluminum wire 2 supported by the support 12a. It is formed on the surface in contact with the area of the part. The protrusion 136a is formed along the edge of the groove 135a.

  The protrusion 136a is, similar to the protrusion 131, applied with a force that pushes the lid 13a toward the support 12a, whereby the aluminum wire 2 is fixed by the support 12a and the lid 13a. Is inserted inside the Further, the conductive metal terminal 1a can increase the contact area between the lid 13a and the aluminum electric wire 2 because the lid 13a has the protrusion 136a.

  The restricting portion 137 a has a function of restricting the movement of the aluminum electric wire 2 supported by the support portion 12 a toward the connection portion 11. The restricting portion 137a is formed at an end opposite to the connecting portion 11 side in the longitudinal direction of the lid main body 132a. Specifically, the restricting portion 137a is the end of the restricting portion 137a opposite to the end connected to the lid main body 132a from the end of the restricting portion 137a connected to the lid main body 132a. The cover main body 132a is formed to be inclined at a predetermined angle with the cover main body 132a so as to be positioned above in the direction orthogonal to the cover main body 132a.

  In a state where the lid 13a is placed so as to cover at least a partial region of the aluminum electric wire 2 supported by the support 12a, the end of the restricting portion 137a opposite to the lid main body 132a is, for example, It is in contact with the end in the longitudinal direction of the covering portion 212 of the aluminum electric wire 2. In the aluminum electric wire 2, since the covering portion 212 is peeled off near the tip of the aluminum electric wire 2, the tip in the longitudinal direction of the covering portion 212 of the aluminum electric wire 2 is behind the tip in the longitudinal direction of the aluminum wire 211 positioned.

  When joining the lid 13a to the aluminum electric wire 2, for example, in the case of using resistance welding, the electrode is pressed to the center of the lid 13a to push the lid 13a toward the support 12a. Further, when joining the lid 13a to the aluminum electric wire 2, for example, in the case of using ultrasonic bonding, the cover 13a is pushed toward the support 12a by placing a horn on the center of the upper surface of the lid 13a. . Depending on the shape of the electrode or the horn, the electrode or the horn pushes the lid 13a toward the support 12a by being applied to the entire lid 13a.

[Modification]
In the first embodiment described above, an example is given in which the connecting portion 14 separates the lid 13 from the supporting portion 12 by applying a pressing force to the supporting portion 12 to the lid 13. In the state in which the lid portion 13 is in contact with the aluminum electric wire 2 by applying a pressing force to the lid portion 13 toward the support portion 12, the state in which the lid portion 13 and the support portion 12 are coupled May be maintained.

  In this case, the pressing force toward the support portion 12 is applied to the lid portion 13 so that the surface on the support portion 12 side of the lid portion 13 contacts the partial region of the aluminum electric wire 2 and a portion of the aluminum electric wire 2 The region is fixed by being sandwiched between the bottom 121 of the support 12 and the lid 13.

  Even if the lid 13 and the support 12 are joined by the joint 14, for example, in the case of joining by resistance welding, a current flows from the lid 13 to a partial region of the aluminum electric wire 2. A part of the area is melted, and the lid 13 is joined to a part of the area of the aluminum electric wire 2. By applying a pressing force to the lid 12 to the support 12, the lid 13 and the support 12 are maintained in a coupled state with the lid 13 in contact with the aluminum electric wire 2. Thus, for example, it is possible to prevent the lid 13 from being detached and lost after bonding.

[Effect of Conductive Metal Terminal 1 According to First Embodiment]
The conductive metal terminal 1 according to the first embodiment is supported by a connecting portion 11 to be connected to another device, a supporting portion 12 electrically connected to the connecting portion 11 and supporting the aluminum wire 2, and a supporting portion 12 And a cover 13 covering at least a partial area of the aluminum electric wire 2.

  The conductive metal terminal 1 according to the first embodiment has a lid 13 that covers at least a partial region of the aluminum electric wire 2 supported by the support 12. Therefore, the conductive metal terminal 1 can easily ensure the electrical connection with the aluminum electric wire 2 by having the lid portion 13.

  As mentioned above, although the present invention was explained using an embodiment, the technical scope of the present invention is not limited to the range given in the above-mentioned embodiment, and various modification and change are possible within the range of the gist. is there. For example, a specific embodiment of device distribution and integration is not limited to the above embodiment, and all or a part thereof may be functionally or physically distributed and integrated in any unit. Can. In addition, new embodiments produced by any combination of a plurality of embodiments are also included in the embodiments of the present invention. The effects of the new embodiment generated by the combination combine the effects of the original embodiment.

S, Sa: Aluminum wire with conductive metal terminal 1, 1a: Conductive metal terminal 11: Connection portion 12, 12a: Support portion 121: Bottom portion 122: Side portion 123 · · · Left side surface portion 124 · · · right side surface portion 125 · · · hole portion 126a · · · left side hole portion 1261a · · · first region 1262a · · · second region 127a · · · right side hole portion 1271a · · · First region 1272a: second region 13, 13a: lid 131: projection 132a: lid main body 133a: left engaging portion 134a: right engaging portion 135a: Groove portion 136a: Protrusion 137a: Regulating portion 14: Coupling portion 141: Groove 15: Clamping portion 151: Bottom portion 152: Left side portion 153: Right side portion 2 ... Aluminum wire 21 ··· Aluminum stranded wire 21 ... aluminum wire 212 ... covering portion

Claims (14)

Connections to connect to other devices,
A supporting portion electrically connected to the connecting portion and supporting the aluminum wire;
A lid covering an area of at least a portion of the aluminum wire supported by the support;
An electroconductive metal terminal characterized by having. The lid portion is characterized in that the aluminum electric wire is fixed to the support portion by applying a pressing force toward the support portion.
The conductive metal terminal according to claim 1. It further has a connecting part that connects the lid and the support.
The connection portion is characterized in that the lid and the support are separated by applying a pressing force toward the support to the lid.
The conductive metal terminal according to claim 1. It further has a connecting part that connects the lid and the support.
The connecting portion is connected between the lid and the support in a state where the lid is in contact with the aluminum wire by applying a pressing force toward the support to the lid. Characterized in that the state is maintained,
The conductive metal terminal according to claim 1. The connection portion is formed with a groove extending in a direction orthogonal to a direction in which the lid portion is pushed toward the support portion.
The conductive metal terminal according to claim 3 or 4. The support portion is provided at an end opposite to the side where the connection portion is provided, and further includes a holding portion for fixing the aluminum electric wire.
The electroconductive metal terminal as described in any one of Claims 1-5. The support portion is
A bottom portion on which the aluminum wire is placed;
Side portions formed on both ends of the bottom;
Characterized by having
The electroconductive metal terminal as described in any one of Claims 1-6. The lid portion is provided at a position where the aluminum electric wire is not in contact with the side surface portion in a state where the aluminum electric wire is fixed to the support portion by applying a pressing force of the lid portion toward the support portion. Characterized by
The conductive metal terminal according to claim 7. A hole is formed in at least one of the bottom portion or the side surface portion,
A conductive metal terminal according to claim 7 or 8. The lid has a protrusion formed on a surface on the side of the support.
The conductive metal terminal according to any one of claims 1 to 9. The lid has a plurality of engaging portions,
The support portion has a plurality of holes into which the plurality of engagement portions are inserted.
The conductive metal terminal according to claim 1. Aluminum wire,
A conductive metal terminal fixed to the aluminum wire;
Have
The conductive metal terminal is
Connections to connect to electrical devices,
A supporting portion electrically connected to the connecting portion and supporting the aluminum wire;
A lid covering an area of at least a portion of the aluminum wire supported by the support;
An aluminum wire with a conductive metal terminal, characterized by comprising: Preparing an aluminum wire,
Conduction having a connection portion connected to an electric device, a support portion electrically connected to the connection portion and supporting the aluminum wire, and a lid portion covering at least a partial region of the aluminum wire supported by the support portion Preparing a metallic metal terminal,
Placing the aluminum wire on the support portion;
Fixing the region of a portion of the aluminum wire supported by the support by the support and the lid by pushing the lid toward the support;
Bonding the aluminum wire to the support portion and the lid portion after the fixing step;
A method of manufacturing an aluminum wire with a conductive metal terminal, comprising: Before the step of fixing, the method further includes the step of fixing the aluminum electric wire to the conductive metal terminal in the sandwiching portion of the conductive metal terminal.
The manufacturing method of the aluminum wire with a conductive metal terminal of Claim 13.

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