JP2012119216A - Crimp terminal and electric wire with terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a coated crimp portion of a crimp terminal from coming off from an insulation coating of an electric wire due to stress applied on the electric wire, in an electric wire with a terminal.SOLUTION: An electric wire 1 with a terminal is equipped with an electric wire 9, and a crimp terminal 10 attached to an end portion of the electric wire 9. The crimp terminal 10 has a coated crimp portion 20 crimped to an insulation coating 92 at the end portion of the electric wire 9, and a core crimp portion 40 crimped to a core 91 extended from the insulation coating 92 at the end portion of the electric wire 9. The coated crimp portion 20 has a part which is formed so as to extend along a surface of the insulation coating 92, from a bottom plate portion 21 for supporting the insulation coating 92 from one side, toward a caulking portion 220 caulked to the insulation coating 92 while opposing to the bottom plate portion 21. At the edge portion of the caulking portion 220, a claw portion 211 which is a part bent toward the bottom plate portion 21, has a shape extending in a direction intersecting a longitudinal direction of the electric wire, and engages into the insulation coating 92 is formed.

Description

  The present invention relates to a crimp terminal attached to an end portion of an electric wire, and an electric wire with a terminal including an electric wire and a crimp terminal.

  Generally, a metal crimp terminal is attached to an end portion of an electric wire in a wire harness. Moreover, as a crimp terminal, there exist the crimp terminal which has a part which presses down insulation coating, and the crimp terminal which does not have the part which presses down insulation coating, as patent document 1 shows.

  The crimp terminal having a portion that holds the insulation coating includes a coated crimp portion that is crimped to the coating at the end of the wire, a core crimp unit that is crimped to the core wire extending from the coating at the end of the wire, and a mating terminal And a terminal connection part connected to the other terminal by fitting. Then, a part of each of the coated crimping part and the core crimping part is bent and caulked against the insulating coating, whereby the coated crimping part grips the insulating coating of the electric wire, and the core crimping part grips the core of the electric wire. . As a result, the crimp terminal is fixed to the end of the electric wire.

  In the crimp terminal, the coated crimp portion plays a role of firmly holding the crimp terminal on the electric wire, and the core wire crimp portion mainly plays a role of electrically connecting the crimp terminal and the core wire of the wire. Note that the coated crimping portion, the core crimping portion, and the terminal connection portion are referred to as an insulation barrel, a wire barrel, and a contact, respectively.

JP 2009-151941 A

  However, the frictional resistance between the coated crimping portion of the conventional crimp terminal and the insulating coating of the electric wire is relatively small, and the insulating coating of the electric wire has flexibility. Therefore, it cannot be said that the conventional electric wire with a terminal has a sufficiently high performance that the coated crimping portion holds the insulating coating of the electric wire. That is, the conventional electric wire with a terminal has a problem that when a tensile stress or a bending stress is repeatedly applied in a state where the crimp terminal portion is fixed, the coated crimp portion is detached from the insulating coating of the electric wire.

  An object of the present invention is to prevent a coated crimp portion of a crimp terminal from being detached from an insulating coating of the electric wire due to stress applied to the electric wire in the electric wire with terminal.

  The electric wire with a terminal according to the present invention includes an electric wire and a crimp terminal attached to an end portion of the electric wire. The crimp terminal has a coated crimping portion that is crimped to an insulating coating at an end portion of the electric wire and a core wire crimping portion that is crimped to a core wire extending from the insulating coating at the end portion of the electric wire. Furthermore, in the electric wire with a terminal according to the present invention, the cover crimping portion of the crimp terminal is from the bottom plate portion supporting the insulation coating from one side to the caulking portion caulked against the insulation coating in a state of facing the bottom plate portion. And a portion formed to extend along. Furthermore, in the electric wire with a terminal according to the present invention, it is a portion bent in the direction toward the bottom plate portion at the edge portion of the crimping portion of the coated crimping portion, and has a shape extending in a direction intersecting the longitudinal direction of the electric wire. The nail | claw part which has and digs into the insulation coating is formed.

  Moreover, in the electric wire with a terminal which concerns on this invention, it is possible that the unevenness | corrugation is formed in the edge by the side of the baseplate part in a nail | claw part.

  Moreover, this invention can also be grasped | ascertained as invention of the crimp terminal attached to the edge part of an electric wire. That is, the crimp terminal according to the present invention includes a coated crimp portion that is crimped to the insulating coating at the end portion of the electric wire, and a core wire crimp portion that is crimped to the core wire extending from the insulating coating at the end portion of the electric wire. The covering crimping portion is made of a plate-like member that forms a groove into which the insulating coating portion at the end of the electric wire is inserted, and is crimped to the insulating coating by being bent. Furthermore, the covering crimping portion has a bottom plate portion that forms the bottom of the groove, and an upright portion that is formed upright from the bottom plate portion. Furthermore, in the crimp terminal according to the present invention, the edge of the portion occupying a part of the distal end side of the standing portion is a portion bent inward of the groove, and in the arrangement direction of the coated crimp portion and the core crimp portion. A claw portion having a shape extending in a direction crossing the claw portion is formed. In addition, the arrangement | sequence direction of a coating crimping part and a core crimping | compression-bonding part is a longitudinal direction of the electric wire in which a crimp terminal is attached.

  In the present invention, the cover crimping portion of the crimp terminal is crimped to the flexible insulation coating in a state in which the claw portion formed extending in the direction intersecting the longitudinal direction of the electric wire bites. Therefore, the coated crimp portion of the crimp terminal according to the present invention is more resistant to the stress applied to the wire, particularly the tensile stress applied to the wire in the longitudinal direction than the coated crimp portion of the conventional terminal-attached electric wire. Is held more firmly. Therefore, when the present invention is adopted, even when tensile stress or bending stress is repeatedly applied to the electric wire in a state where the portion of the crimp terminal is fixed, the coated crimp portion of the crimp terminal is separated from the insulation coating of the electric wire. Hard to come off.

  Further, in the present invention, if the end of the claw part in the coated crimping part is formed to be uneven, the claw part bites into the flexible insulating coating while contacting with a larger area, and the coated crimped part is Holds the insulation coating more firmly. As a result, the coated crimping portion of the crimp terminal is less likely to come off from the insulating coating of the electric wire.

1 is a perspective view of a crimp terminal 10 according to a first embodiment of the present invention. 3 is a side cross-sectional view of a portion including a coated crimping portion of the crimp terminal 10. FIG. 3 is a plan view of a portion including a coated crimp portion of the crimp terminal 10. FIG. It is sectional drawing of the terminal crimping apparatus in which the crimp terminal 10 and the electric wire were set. It is a cross-sectional view of the part of the covering crimping part in the electric wire with terminal 1 according to the embodiment of the present invention. It is a side view of the principal part of the electric wire 1 with a terminal. It is a top view of the principal part of the electric wire 1 with a terminal. It is sectional drawing of the covering crimping | compression-bonding part of 10 A of crimp terminals which concern on 2nd Embodiment of this invention. It is a cross-sectional view of the portion of the coated crimp portion in the electric wire with terminal 1A according to the second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention.

<First Embodiment>
First, the structure of the crimp terminal 10 according to the first embodiment of the present invention and the terminal-attached electric wire 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 7. The terminal-attached electric wire 1 includes an electric wire 9 and a crimp terminal 10 attached to the end thereof.

  In addition, the cross section represented by hatching in FIG. 2 is the EE cross section shown in FIG. Moreover, the broken line in FIG. 6 is a hidden line.

<Wire>
As shown in FIG. 5 to FIG. 7, the electric wire 9 to which the crimp terminal 10 is attached has a core wire that is a long conductor and an insulating coating that is an insulator covering the periphery of the core wire. The end portion of the electric wire 9 to which the crimp terminal 10 is attached is in a state where the insulation coating has been peeled off from the periphery of the core wire of a certain length in advance, that is, in a state where the core wire of a certain length has been extended from the insulation coating. Has been processed.

  Hereinafter, the core wire extending from the end of the insulation coating at the end portion of the electric wire 9 is referred to as a bare core wire 91. In addition, a portion in a certain range (a range of a length of several millimeters to a few dozen millimeters) of the end portion of the insulating coating of the electric wire 9 is referred to as a covering end portion 92.

  In the terminal-attached electric wire 1, the core wire of the electric wire 9 is, for example, a metal wire whose main component is copper or aluminum.

<Crimp terminal>
Hereinafter, the crimp terminal 10 attached to the electric wire 9 will be described with reference to FIGS. 1 to 3. As shown in FIG. 1 to FIG. 3, the crimp terminals 10 are formed in a line along the linear direction, and the coated crimp part 20, the first connecting part 30, the core crimping part 40, and the second connecting part 50. And a contact portion 60.

  Hereinafter, the linear direction from the coated crimping portion 20 in the crimp terminal 10 toward the core crimping portion 40 and the contact portion 60 is referred to as an extending direction. The extending direction is also the longitudinal direction of the electric wire 9 to which the crimp terminal 10 is attached. The X-axis direction of the coordinate axes shown in each figure is the stretching direction.

  The crimp terminal 10 is made of a copper alloy such as copper or brass, or a tin alloy in which tin (Sn) plating or tin (Ag), copper (Cu), bismuth (Bi) or the like is added to these members. It is a conductor member plated.

<Crimp terminal: Coated crimp part>
The coated crimping part 20 is a plate-like part formed by bending, and forms a groove into which the coated end 92 of the electric wire 9 is inserted before being crimped to the electric wire 9. That is, the coated crimping portion 20 is crimped to the coated end portion 92 inserted inside the groove formed by the coated crimping portion 20. The inner side surface of the coated crimp portion 20 is a surface facing the coated end portion 92 of the electric wire 9.

  The cover crimping portion 20 includes a first bottom plate portion 21 and two upstanding portions 22 and 23 facing each other. The first bottom plate portion 21 is a portion that supports the covered end portion 92 of the electric wire 9 to which the crimp terminal 10 is attached from one direction. The two upright portions 22 and 23 are portions that are formed upright from the first bottom plate portion 21.

  The portion occupying a part of the range on the tip side of one upright portion 22 is a caulking portion 220 that is bent in a direction facing the first bottom plate portion 21 and caulked to the covering end portion 92. Similarly, a portion occupying a part of the distal end side of the other upright portion 23 is also a caulking portion 230 that is bent in a direction facing the first bottom plate portion 21.

  However, as shown in FIGS. 5 to 7, the caulking portion 230 of the rising portion 23 is overlapped and caulked on the outside of the caulking portion 220 of the rising portion 22. That is, the cover crimping portion 20 of the crimp terminal 10 is a so-called overlap type crimping portion. FIG. 5 is a cross-sectional view of a portion of the coated crimping portion 20 in the terminal-attached electric wire 1 including the electric wire 9 and the crimp terminal 10 crimped to the electric wire 9.

  Hereinafter, portions other than the caulking portions 220 and 230 in the two upright portions 22 and 23 are referred to as side wall portions. The side wall part in one standing part 22 is a part which is connected to the first bottom plate part 21 and the caulking part 220 and connects them. The side wall portion of the other upright portion 23 is a portion that connects to and connects the first bottom plate portion 21 and the caulking portion 230. When the coated crimping portion 20 is crimped to the coated end portion 92, the inner surface of the first bottom plate portion 21, the side wall portion of one rising portion 22 and the inner surface of the caulking portion 220, and the side wall portion of the other rising portion 23. Contacts the coated end 92.

  In the example shown in FIG. 1 to FIG. 3, the first bottom plate portion 21 and the upright portions 22 and 23 are all flat, but they follow the outer shape of the covering end portion 92 that forms a curved peripheral surface. Thus, it may have a curved plate shape. Hereinafter, a direction orthogonal to the extending direction (X-axis direction) and facing the two standing portions 22 and 23 is referred to as a width direction. Furthermore, a direction orthogonal to the stretching direction and the width direction is referred to as a height direction. The two upright portions 22 and 23 are formed to rise from the first bottom plate portion 21 in the height direction. The Y-axis direction and the Z-axis direction of the coordinate axes shown in each figure are the width direction and the height direction, respectively. Therefore, the first bottom plate portion 21 supports the covering end portion 92 of the electric wire 9 from one side in the height direction, that is, from the negative direction of the Z axis.

  Further, a claw portion 221 is formed at the edge portion of the caulking portion 220 that is directly caulked to the covering end portion 92, that is, the edge portion of the portion that occupies a part of the distal end side of the standing portion 22. The claw portion 221 is a portion of the edge portion of the caulking portion 220 that is bent toward the inside of the groove formed by the cover crimping portion 20. Moreover, the nail | claw part 221 has the elongate shape extended in the direction which cross | intersects with respect to the extending | stretching direction.

  In the example shown in FIGS. 1 to 3, two claw portions 221 are formed at two edge portions on both sides of the caulking portion 220 in the extending direction. It is also conceivable that the claw portion 221 is formed only on one of the two edge portions on both sides of the caulking portion 220 in the extending direction.

  In the example shown in FIGS. 1 to 3, the claw portion 221 is a portion bent inward by about 90 ° from the base portion of the upright portion 22 that forms a plane parallel to the extending direction. Therefore, when the caulking portion 220 is caulked against the covering end portion 92, the claw portion 221 bites into the covering end portion 92 almost perpendicularly to the surface thereof. Note that the angle at which the claw portion 221 is bent inward may be 90 °, or may be another angle within a range from about 70 ° to about 110 °, for example.

  In the example shown in FIGS. 1 to 3, the claw portion 221 has a long shape extending in a direction substantially orthogonal to the extending direction. When the caulking portion 220 is caulked against the covering end portion 92, the claw portion 221 bites into the covering end portion 92 in a state of being formed extending in the width direction (Y-axis direction). In addition, the angle which the longitudinal direction of the nail | claw part 221 makes with respect to an extending | stretching direction may be other angles in the range from about 45 degrees to about 90 degrees other than the case where it is 90 degrees.

  The claw portion 211 is formed by bending a flat plate member that is the base of the crimp terminal 10. In addition, the member of the flat board | plate material used as the origin of the crimp terminal 10 is obtained by the die cutting process with respect to a plate-shaped base material. If the nail | claw part 211 is a part shape | molded by the bending process, the nail | claw part 211 can be made more simply than the case where the nail | claw part 211 is produced by metal mold | die shaping | molding.

<Crimp terminal: Core wire crimping part>
The core wire crimping portion 40 is a plate-like portion formed by bending, and forms a groove into which the bare core wire 91 of the electric wire 9 is inserted before being crimped to the electric wire 9. That is, the core wire crimping portion 40 is crimped to the bare core wire 91 inserted inside the groove formed by the core wire crimping portion 40. The inner side surface of the core wire crimping portion 40 is a surface facing the bare core wire 91 of the electric wire 9.

  The core wire crimping portion 40 includes a second bottom plate portion 41 and two upstanding portions 42 and 43 facing each other. The second bottom plate portion 41 is a portion that supports the bare core wire 91 in the electric wire 9 to which the crimp terminal 10 is attached from one side in the height direction, that is, from the negative direction of the Z axis. Further, the two standing portions 42 and 43 are portions formed by standing from the second bottom plate portion 41. The two standing portions 42 and 43 in the core wire crimping portion 40 are also erected in the height direction and are opposed to each other in the width direction.

  A portion that occupies a part of the distal end side of the one standing portion 42 is a caulking portion 420 that is bent in a direction facing the second bottom plate portion 41 and caulked to the bare core wire 91. Similarly, a portion occupying a part of the distal end side of the other upright portion 43 is also a caulking portion 430 that is bent in a direction facing the second bottom plate portion 41 and caulked to the bare core wire 91.

  When the core wire crimping portion 40 is crimped to the bare core wire 91, the inner side surface of the second bottom plate portion 41 and the inner side surfaces of the two upright portions 42 and 43 are in contact with the bare core wire 91.

  In the example shown in FIGS. 1 to 3, the second bottom plate portion 41 and the upright portions 42 and 43 are all flat, but they may be curved plates.

<Crimp terminal: first connecting part, second connecting part>
The first connecting portion 30 is a portion that connects the coated crimping portion 20 and the core wire crimping portion 40. The second connecting part 50 is a part that connects the core crimping part 40 and the contact part 60.

<Crimp terminal: Contact part>
The contact portion 60 is a portion (terminal connection portion) that is in direct contact with and connected to the mating terminal by fitting with a mating terminal (not shown) to which the crimp terminal 10 is connected. The contact portion 60 shown in FIGS. 1 and 6 is a cylindrical portion in which a terminal insertion hole 61 that is a hole into which a mating terminal is inserted is formed. Note that the contact portion 60 may be a rod-like conductor that is fitted into the terminal insertion hole of the counterpart terminal.

<Terminal crimping device>
Here, the terminal crimping device 70 used for crimping the crimp terminal 10 to the end of the electric wire 9 will be described with reference to FIG. FIG. 4 is a cross-sectional view of the terminal crimping device 70 in which the crimp terminal 10 and the electric wire 9 are set. The cross section of the terminal crimping device 70 shown in FIG. 4 shows a cross section of a portion where the coated crimping portion 20 of the crimp terminal 10 is crimped to the coated end 92.

  The terminal crimping device 70 crimps the anvil 71 that supports the electric wire 9 and the crimp terminal 10, and the crimping portions 220, 230, 420, and 430 of the covering crimp portion 20 and the core wire crimp portion 40 of the crimp terminal 10. And a crimper 72. One or both of the anvil 71 and the crimper 72 are movably supported by a support mechanism (not shown). The anvil 71 and the crimper 72 are supported by the support mechanism so as to be able to approach and be separated from each other.

  The anvil 71 is formed with a support surface 711 that supports the first bottom plate portion 21 and the second bottom plate portion 41 of the coated crimp portion 20 in the crimp terminal 10 from the outer surface thereof. As shown in FIG. 4, the direction in which the support surface 711 supports the first bottom plate portion 21 of the coated crimping portion 20 is the same direction as the direction in which the first bottom plate portion 21 of the coated crimped portion 20 supports the coated end portion 92. .

  On the other hand, the crimper 72 is formed with molding surfaces 721 and 722 that come into contact with the caulking portions 220 and 230 of the coated crimping portion 20 in the crimp terminal 10 and bend inward while sliding the caulking portions 220 and 230. Further, the crimper 72 is also formed with a molding surface that contacts the crimping portions 420 and 430 of the core wire crimping portion 40 of the crimping terminal 10 and bends inward while sliding the crimping portions 420 and 430. However, the molding surface of the core wire crimping part 40 is not shown in FIG.

  Since the crimping portions 220 and 230 of the covering crimping portion 20 are of the overlap type, the crimper 72 has a shape of the molding surface 721 for molding the crimping portion 220 of one rising portion 22 in the covering crimping portion 20 and the other standing portion. This is different from the shape of the molding surface 722 for molding the caulking portion 230 of the portion 23. That is, the molding surfaces 721 and 722 for caulking the caulking portions 220 and 230 of the cover crimping portion 20 in the crimper 72 are formed to be asymmetric in the width direction.

  On the other hand, as shown in FIG. 7, in the crimp terminal 10, the caulking portions 420 and 430 of the core wire crimping portion 40 are caulked to the bare core wire 91 without overlapping, and are not an overlap type. Therefore, the molding surfaces (not shown) for crimping the crimping portions 420 and 430 of the core wire crimping portion 40 in the crimper 72 are formed symmetrically in the width direction.

  When one or both of the anvil 71 and the crimper 72 move in the direction in which they approach, the crimp terminal 10 is crimped to the covering end 92 and the bare core 91 while being crushed between the anvil 71 and the crimper 72. The At that time, one caulking portion 220 of the covering crimping portion 20 is bent in a direction facing the first bottom plate portion 21 along the molding surface 721 of the crimper 72 and is caulked to the covering end portion 92. In addition, the other caulking portion 230 of the covering crimping portion 20 is bent in a direction facing the first bottom plate portion 21 along the molding surface 722 of the crimper 72 and caulked to the outside of the one caulking portion 220. Further, the caulking portions 420 and 430 of the core wire crimping portion 40 are bent in a direction facing the second bottom plate portion 41 along a molding surface (not shown) in the crimper 72 and caulked to the bare core wire 91.

<Wire with terminal>
As shown in FIGS. 5 to 7, in the terminal-attached electric wire 1, the crimp terminal 10 that is crimped to the electric wire 9 includes the coated crimp portion 20 that is crimped to the coated end 92 of the electric wire 9, and the bare core wire of the electric wire 9. A core wire crimping portion 40 crimped to 91 is provided.

  Further, in the terminal-attached electric wire 1, the cover crimping portion 20 of the crimp terminal 10 is caulked against the cover end 92 in a state of facing the first bottom plate 21 from the first bottom plate 21 that supports the cover end 92 from one side. It has a portion formed to extend along the surface of the covering end portion 92 to the crimped portion 220.

  Further, in the terminal-attached electric wire 1, a claw portion 221 that is a portion bent in the direction toward the first bottom plate portion 21 is formed at the edge portion of the caulking portion 230 that contacts the insulating coating 92 in the coated crimping portion 20. . The claw portion 221 has a long shape extending in a direction intersecting the extending direction. Further, the claw portion 221 bites into the covering end portion 92 by the caulking portion 230 being caulked against the covering end portion 92.

  In the example shown in FIGS. 6 and 7, the two claw portions 221 are formed at two edge portions on both sides in the extending direction of the coated crimping portion 20. It is also conceivable that the claw portion 221 is formed only on one of the two edge portions on both sides in the extending direction of the coated crimp portion 20.

  In the example shown in FIGS. 5 to 7, the claw portion 221 bites into the covering end portion 92 almost perpendicularly to the surface thereof. In the example shown in FIGS. 5 to 7, the claw portion 221 bites into the covering end portion 92 in a state of being formed to extend in the width direction (Y-axis direction). For example, in the terminal-attached electric wire 1, the protruding dimension in the claw part 221 from the inner side surface of the upright part 22 to the inner side is smaller than the dimension of the thickness of the insulating coating (covered end part 92) in the electric wire 9.

  In the terminal-attached electric wire 1 having the above-described configuration, the cover crimping portion 20 of the crimp terminal 10 is in a state in which the claw portion 221 bent inward from the upright portion 22 bites into the covering end portion 92 having flexibility. Crimped with. Therefore, the covering crimp portion 20 of the crimp terminal 10 in the terminal-attached electric wire 1 holds the covering end portion 92 more firmly than the conventional covering crimp portion in the terminal-attached electric wire. Further, since the claw portion 221 is formed so as to extend in a direction intersecting with the extending direction, the coated crimping portion 20 particularly covers the covering end portion 92 against the tensile stress applied to the electric wire 9 along the extending direction. Is held more firmly. Therefore, in the terminal-attached electric wire 1, even when tensile stress or bending stress is repeatedly applied to the electric wire 9 in a state where the portion of the crimp terminal 10 is fixed, the coated crimp portion 20 of the crimp terminal 10 is not covered with the coated end. It is difficult to come off from the portion 92.

Second Embodiment
Next, the configuration of the crimp terminal 10A according to the second embodiment of the present invention and the terminal-attached electric wire 1A according to the second embodiment of the present invention will be described with reference to FIGS. 1 A of electric wires with a terminal are equipped with the electric wire 9 and the crimp terminal 10A attached to the edge part. FIG. 8 is a cross-sectional view of the cover crimping portion 20 of the crimp terminal 10A. FIG. 9 is a cross-sectional view of a portion of the coated crimping portion 20 in the terminal-attached electric wire 1A.

  The crimp terminal 10 </ b> A differs from the crimp terminal 10 shown in FIGS. 1 to 3 only in the shape of the claw part in the coated crimp part 20. Hereinafter, in FIG.8 and FIG.9, the same component as the component shown by FIGS. 1-7 is attached | subjected with the same referential mark. Hereinafter, only differences between the crimp terminal 10A and the crimp terminal 10 will be described. Note that a claw portion 211A corresponding to the claw portion 221 of the crimp terminal 10 is formed in the cover crimp portion 20 of the crimp terminal 10A.

  As shown in FIG. 8, in the cover crimping portion 20 of the crimp terminal 10 </ b> A, the end of the claw portion 221 </ b> A in the direction toward the inside of the groove is formed to be uneven. Moreover, as shown in FIG. 9, in the cover crimping part 20 crimped | bonded to the covering end part 92 of the electric wire 1A with a terminal, the unevenness | corrugation is formed in the edge by the side of the baseplate part 21 in claw part 221A.

  The claw portion 221A of the crimp terminal 10A bites into the flexible covered end portion 92 while being in contact with a larger area. Therefore, the covered crimp portion 20 of the crimp terminal 10A holds the covered end portion 92 more firmly. As a result, the covered crimp portion 20 of the crimp terminal 10 </ b> A is less likely to be detached from the covered end portion 92.

<Others>
In the crimp terminals 10, 10 </ b> A of the embodiments shown above, the coated crimp part 20 is an overlap type in which the crimp parts 220, 230 of the two standing upright parts 22, 23 are overlapped. However, like the core crimping part 40 shown in FIG. 7, the covering crimping part 20 is a type that is crimped to the covering end part 92 in a state where the crimping parts 220 and 230 of the two standing parts 22 and 23 do not overlap. There may be.

  In the crimp terminals 10 and 10 </ b> A of each embodiment, the caulking portions 220 and 230 are portions that are bent and caulked from both sides of the covering end portion 92. However, a configuration in which the caulking portion is formed only on one side of the covering end portion 92 at each position in the extending direction of the crimp terminals 10 and 10A is also conceivable.

  Moreover, in the crimping | compression-bonding crimping | compression-bonding part 20 of the crimping terminals 10 and 10A of each embodiment, the caulking part 220 directly caulked to the coating | coated end part 92 is one. However, it is also conceivable that the coated crimping portion 20 has two or more crimped portions arranged in the extending direction as a portion crimped to the coated end portion 92. In that case, it is also conceivable that the crimp terminals 10 and 10 </ b> A have a configuration in which the claw portions 221 and 22 </ b> A are formed at the edge portions of the plurality of caulking portions.

DESCRIPTION OF SYMBOLS 1,1A Electric wire with a terminal 9 Electric wire 10, 10A Crimp terminal 20 Cover crimp part 21 First bottom plate part 22, 23 Standing part of cover crimp part 30 First connection part 40 Core wire crimp part 41 Second bottom plate part 42, 43 Core wire crimp Standing portion 50 Second connecting portion 60 Contact portion 61 Terminal insertion hole 70 Terminal crimping device 71 Anvil 72 Crimper 91 Bare core wire (core wire)
92 Covering edge (insulating coating)
211, 211A Claw portion 220, 230 Caulking portion of coated crimping portion 420, 430 Caulking portion of core wire crimping portion 711 Anvil support surface 721, 722 Crimper molding surface

Claims (3)

Electric wires,
A crimp terminal attached to an end of the electric wire and having a coated crimp portion crimped to an insulating coating at the end of the electric wire and a core crimping portion crimped to a core wire extending from the insulating coating at the end of the electric wire And a terminal-attached electric wire comprising:
The coated crimp portion of the crimp terminal is
A portion extending along the surface of the insulating coating from a bottom plate portion supporting the insulating coating from one side to a caulking portion caulked against the insulating coating in a state of facing the bottom plate portion;
It is a part that is bent in the direction toward the bottom plate at the edge of the caulking portion of the covering crimping portion, and has a shape extending in a direction intersecting with the longitudinal direction of the electric wire, and the insulating coating An electric wire with a terminal, characterized in that a nail portion is formed.   The electric wire with a terminal according to claim 1, wherein an end of the claw portion on the bottom plate portion side is formed to be uneven. A cover-bonding part that is formed of a plate-like member that forms a groove into which a portion of the insulating coating at the end of the electric wire is inserted, and is crimped to the insulating coating by being bent;
A crimping terminal comprising: a core wire crimping part that is crimped to a core wire extending from the insulating coating at an end of the electric wire,
The coated crimping part is
A bottom plate part forming the bottom of the groove;
An upright portion formed upright from the bottom plate portion,
In the direction that intersects the arrangement direction of the covering crimping part and the core crimping part, it is a part that is bent to the inside of the groove at the edge of the part that occupies a part of the distal end side of the standing part A crimp terminal, wherein a claw portion having an elongated shape is formed.

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