JP2012119186A - 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 bottom plate portion 21 for supporting the insulation coating 92 from one side, and three or more caulking portions 221, 232, 223 which are formed to be aligned at intervals in a longitudinal direction of the electric wire 9 and caulked to the insulation coating 92 while opposing to the bottom plate portion 21.

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 shown in Patent Document 1, a caulking portion that is caulked with respect to the insulating coating of the electric wire is provided only in one region in the longitudinal direction 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. In addition, in the coated crimping portion that is crimped to the insulating coating of the electric wire, the edge portion of the crimped portion that is crimped to the insulating coating mainly functions to suppress slipping on the insulating coating. 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 formed side by side with an interval in the longitudinal direction of the electric wire and a bottom plate portion that supports the insulation coating from one side, and is opposed to the bottom plate portion. And three or more caulking portions that are caulked against the insulating coating.

  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 crimping terminal according to the present invention, the direction in which the covering crimping part and the core crimping part are arranged in a state of being opposed to the bottom plate part by being bent to the inside of the groove in a portion that occupies a part of the distal end side of the standing part. In FIG. 3, three or more caulking portions arranged at intervals are 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 by caulking three or more crimping portions arranged at intervals in the longitudinal direction of the electric wire. That is, the coated crimped portion of the crimp terminal according to the present invention has a larger number of crimped portions crimped to the insulation coating than the coated crimped portion of the conventional terminal-equipped electric wire, and the edge portion of the crimped portion is formed longer. The Therefore, the cover crimping part of the crimp terminal according to the present invention more firmly holds the insulation coating of the electric wire against the stress applied to the electric wire, particularly the tensile stress applied to the electric wire in the longitudinal direction. 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.

It is a side view of the principal part of the electric wire 1 with a terminal which concerns on 1st Embodiment of this invention. It is a top view of the principal part of an electric wire with a terminal. 1 is a perspective view of a crimp terminal 10 according to a first embodiment of the present invention. It is a side view of the principal part of 1 A of electric wires with a terminal which concerns on 2nd Embodiment of this invention. It is a top view of the principal part of 1 A of electric wires with a terminal.

  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 electric wire with terminal 1 according to the first embodiment of the present invention and the crimp terminal 10 according to the first embodiment of the present invention will be described with reference to FIGS. The terminal-attached electric wire 1 includes an electric wire 9 and a crimp terminal 10 attached to the end thereof. In addition, the broken line in FIG. 1 is a hidden line.

<Wire>
As shown in FIGS. 1 and 2, 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>
As shown in 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, the second connecting part 50, and the contact part. 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. Hereinafter, one of the two upright portions 22 and 23 facing each other is referred to as a right side upright portion 22 and the other is referred to as a left side upright portion 23.

  The right standing part 22 is formed by branching into three parts from the part close to the base part connected to the first bottom plate part 21, and the three parts from the branch part to the tip side are formed side by side with a gap in the extending direction. ing. Similarly, the left standing part 23 is also formed by branching into three parts from the part close to the base part connected to the first bottom plate part 21, and the three parts from the branch part to the tip side are arranged at intervals in the extending direction. It is formed with.

  Further, a portion occupying a part of the range on the front end side in the right standing portion 22 is a caulking portion 220 that is bent in a direction facing the first bottom plate portion 21. Similarly, a portion that occupies a part of the front end side of the left standing portion 23 is also a caulking portion 230 that is bent in a direction facing the first bottom plate portion 21.

  Since the right standing part 22 is formed by branching into three in the extending direction, the right standing part 22 is formed with three caulking parts 221, 222, and 223 arranged at intervals in the extending direction. . Hereinafter, the first caulking part 221, the second right caulking part 222, and the third right side of the three caulking parts 221, 222, and 223 in the right standing part 22 are sequentially arranged from the opposite side to the core wire crimping part 40. This is referred to as a caulking portion 223.

  Similarly, since the left standing part 23 is also formed by branching into three in the extending direction, the left standing part 23 is formed with three caulking parts 231, 232, and 233 arranged at intervals in the extending direction. Has been. Hereinafter, each of the three caulking portions 231, 232, and 233 in the left standing portion 23 is in order from the opposite side with respect to the core wire crimping portion 40, the first left caulking portion 231, the second left caulking portion 232, and the third left side. This is referred to as a caulking portion 233.

  As shown in FIGS. 1 and 2, the first right caulking portion 221, the second left caulking portion 232, and the third right caulking portion 223 among the three pairs of caulking portions facing each other are the first bottom plate portion 21. And is crimped to the covering end portion 92. That is, the three standing parts 22 and 23 occupy a part of the range on the tip side and bend inward of the groove to be opposed to the first bottom plate part 21 so as to be arranged at intervals in the extending direction. Caulking portions 221, 232, and 223 are formed. In addition, the groove | channel said here means the groove | channel which the covering crimping | compression-bonding part 20 before crimping | bonding to the covering edge part 92 forms.

  On the other hand, the first left caulking portion 231, the second right caulking portion 222, and the third left caulking portion 233 are bent in a direction facing the first bottom plate portion 21, as shown in FIGS. Each of the first right caulking portion 221, the second left caulking portion 232, and the third right caulking portion 223 is caulked by being overlapped on the outside thereof. That is, the cover crimping portion 20 of the crimp terminal 10 is a so-called overlap type crimping portion.

  In addition, the portions other than the caulking portions 220 and 230 in each of the two upright portions 22 and 23 become side wall portions that face the covering end portion 92 from both sides. The side wall portion of the right-side standing portion 22 is a portion that connects to and connects the first bottom plate portion 21 and the caulking portion 220. The side wall portion of the left standing 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 side surface of the first bottom plate portion 21, the side wall portion of the right standing portion 22 and the inner side surface of the caulking portion 220, and the side wall portion of the left standing portion 23 are In contact with the coated end 92.

  In the example shown in FIG. 3, the first bottom plate portion 21 and the two upright portions 22 and 23 are both plate-shaped, but they follow the outer shape of the covering end portion 92 that forms a curved peripheral surface. Moreover, it may be a curved plate. 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.

<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.

  The crimp terminal 10 is crimped to the end of the electric wire 9 by a terminal crimping device (not shown). The terminal crimping apparatus includes an anvil that supports the electric wire 9 and the crimp terminal 10, a crimper that crimps the crimping portions 220, 230, 420, and 430 of the covering crimp portion 20 and the core wire crimping portion 40 of the crimp terminal 10 inward. Is provided. The anvil and the crimper are supported by the support mechanism so as to be able to approach and separate from each other.

  When one or both of the anvil and the crimper move in a direction in which they approach, the crimp terminal 10 is crimped to the coated end portion 92 and the bare core wire 91 while being crushed between the anvil and the crimper. At that time, the first right caulking portion 221, the second left caulking portion 232, and the third right caulking portion 223 of the covering crimping portion 20 are bent in a direction facing the first bottom plate portion 21 along the curved molding surface of the crimper. , And caulked to the covering end 92. Further, the first left caulking portion 231, the second right caulking portion 222, and the third left caulking portion 231 of the covering crimping portion 20 are bent in a direction facing the first bottom plate portion 21 along the curved molding surface of the crimper. The first right caulking part 221, the second left caulking part 232 and the third right caulking part 223 are caulked to the outside. 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 the crimper forming surface and are caulked to the bare core wire 91.

<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.

<Wire with terminal>
As shown in FIGS. 1 and 2, 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 portion 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.

  Furthermore, in the terminal-attached electric wire 1, the cover crimping portion 20 of the crimp terminal 10 is provided to the first bottom plate portion 21 that supports the cover end portion 92 from one side and the cover end portion 92 in a state of facing the first bottom plate portion 21. It has three caulking portions 221, 232, and 223 that are caulked. The three caulking portions 221, 232, and 223 are formed side by side with an interval in the extending direction while facing the first bottom plate portion 21. That is, the two upright portions 22 and 23 in the crimp terminal 10 are bent and formed by the terminal crimping device, so that the first caulking portions 221, 232 and 223 that face the first bottom plate portion 21 from the first bottom plate portion 21. In other words, the portion extends along the surface of the covering end portion 92.

  In the terminal-attached electric wire 1 having the above-described configuration, the cover crimping portion 20 of the crimp terminal 10 has three caulking portions 221 and 232 arranged at intervals in the extending direction with respect to the covering end portion 92 having flexibility. , 223 are crimped.

  As described above, in the covered crimp portion 20 of the crimp terminal 10, the edge portion of the crimped portion that is caulked with respect to the covered end portion 92 mainly functions to suppress slippage with respect to the covered end portion 92. And the crimping | compression-bonding part 20 of the crimp terminal 10 in the electric wire 1 with a terminal has many crimping parts crimped with respect to the coating | coated end part 92 compared with the coating crimping part in the conventional electric wire with a terminal, and the edge of a crimping part The part is formed longer.

  Therefore, the covering crimping portion 20 of the crimping terminal 10 in the terminal-attached electric wire 1 holds the covering end portion 92 more firmly against the stress applied to the electric wire 9, particularly the tensile stress applied to the electric wire 0 in the longitudinal direction thereof. . 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 has a coated end portion. Difficult to come off from 92.

Second Embodiment
Next, the structure 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. 4 and 5 are a side view and a plan view of the main part of the electric wire with terminal 1A. Moreover, the wavy line in FIG. 4 is a hidden line.

  The crimp terminal 10A and the terminal-equipped electric wire 1A are different from the crimp terminal 10 and the terminal-equipped electric wire 1 shown in FIGS. 1 to 3 only in the number and type of caulking portions in the coated crimp portion 20. 4 and 5, the same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals. Hereinafter, only differences between the crimp terminal 10A and the terminal-attached electric wire 1A from the crimp terminal 10 and the terminal-attached electric wire 1 will be described.

  As shown in FIGS. 4 and 4, the four crimped portions 221, 222, 231, and 232 formed side by side in the extending direction (X-axis direction) are formed on the coated crimp portion 20 of the crimp terminal 10 </ b> A. Is formed. These four caulking portions 221, 222, 231, and 232 are caulked against the covering end portion 92 in a state of facing the first bottom plate portion 21.

  That is, the right standing portion 22 is formed by branching into two from a portion close to the root portion that is continuous with the first bottom plate portion 21, and the two portions on the tip side from the branch portion are arranged at intervals in the extending direction. Is formed. Similarly, the left standing portion 23 is also formed by branching into two from a portion close to the base portion that is continuous with the first bottom plate portion 21, and the two portions on the tip side from the branch portion are arranged at intervals in the extending direction. It is formed with.

  A portion occupying a part of the distal end side of the right-side standing 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 that occupies a part of the front end side of the left standing portion 23 is also a caulking portion 230 that is bent in a direction facing the first bottom plate portion 21 and caulked to the covering end portion 92.

  Since the right standing part 22 is formed to be branched into two in the extending direction, the right standing part 22 is formed with two caulking parts 221 and 222. Similarly, since the left standing part 23 is also formed by bifurcating in the extending direction, the left standing part 23 is formed with two caulking parts 231 and 232.

  These four caulking portions 221, 231, 232, 232 are formed side by side in the extending direction with a space therebetween. In the example shown in FIG. 4 and FIG. 5, each of the four caulking portions 221, 231, 232, 232 will be described in order from the opposite side to the core crimping portion 40 in the order of the first right caulking portion 221, first. These are referred to as a left caulking portion 232, a second right caulking portion 222, and a second left caulking portion 232.

  As shown in FIGS. 4 and 5, the four caulking portions 221, 231, 232, and 232 are bent in a direction facing the first bottom plate portion 21 and caulked to the covering end portion 92. That is, the three standing parts 22 and 23 occupy a part of the range on the tip side and bend inward of the groove to be opposed to the first bottom plate part 21 so as to be arranged at intervals in the extending direction. Caulking portions 221, 232, and 223 are formed. That is, the cover crimping part 20 of the crimp terminal 10A is a type of crimping part in which the caulking parts 220 and 230 in the two rising parts 22 and 23 facing each other do not overlap. In addition, the groove | channel said here means the groove | channel which the covering crimping | compression-bonding part 20 before crimping | bonding to the covering edge part 92 forms.

  In the same manner as in the terminal-attached electric wire 1, the cover crimping portion 20 of the crimp terminal 10 </ b> A in the terminal-attached electric wire 1 </ b> A is also compared with the cover crimping portion in the conventional terminal-attached electric wire 1. The edge portion of the caulking portion is formed longer. Therefore, the effect similar to the case where the electric wire 1 with a terminal is employ | adopted by employ | adopting the electric wire 1A with a terminal is acquired.

<Others>
In the crimp terminal 10 of the first embodiment, the cover crimping portion 20 is an overlap type in which the crimping portions 220 and 230 of the two standing upright portions 22 and 23 are overlapped. However, the covering crimping portion 20 of the crimping terminal 10 has two upright portions in the same manner as the core crimping portion 40 shown in FIG. 7 or the covering crimping portion 20 of the crimping terminal 10A shown in FIGS. The caulking portions 220 and 230 of the 22 and 23 may be caulked against the covering end portion 92 without overlapping.

  Further, in the crimp terminal 10 of the first embodiment, the two caulking portions 221 and 223 in the right standing portion 22 and the one caulking portion 232 in the left standing portion 23 are caulked with respect to the covering end portion 92. However, the three caulking portions 221, 222, and 223 in the right standing portion 22 are caulked against the covering end portion 92, and the three caulking portions 231, 232, and 233 in the left standing portion 23 are 3 in the right standing portion 22. It is also conceivable that the caulking portions 221, 222, and 223 are caulked to the outside. Alternatively, the three caulking portions 231, 232, 233 in the left standing portion 23 are caulked against the covering end 92, and the three caulking portions 221, 222, 223 in the right standing portion 22 are 3 in the left standing portion 23. It is also conceivable that the caulking portions 231, 232 and 233 are caulked to the outside.

  Further, in the crimp terminal 10A of the second embodiment, the coated crimp part 20 is a type that is crimped in a state where the crimp parts 220 and 230 of the two upright parts 22 and 23 facing each other do not overlap. However, the cover crimping portion 20 of the crimp terminal 10A is covered in a state where the caulking portions 220 and 230 of the two upright portions 22 and 23 overlap in the same manner as the cover crimping portion 20 of the crimp terminal 10 shown in FIGS. It may be an overlap type that is crimped to the end 92. In this case, the two upright portions 22 and 23 are provided with four pairs of caulking portions facing each other.

  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 crimped directly to the coating | coated edge part 92 is three or four. However, it is also conceivable that the covering crimping portion 20 has five or more caulking portions arranged in the extending direction as a portion to be caulked to the covering end portion 92. However, if the number of caulking portions is too large, the coated crimping portion 20 becomes too long. Therefore, it is practical that there are three or four caulking portions that are crimped to the covering end portion 92 unless there is no particular limitation on the length of the covering crimping portion 20.

1, 1A Electric wire with terminal 9 Electric wire 10, 10A Crimp terminal 20 Coated crimp part 21 First bottom plate part 22 Standing part of the coated crimp part (right standing part)
23 Standing part of coated crimping part (left standing part)
30 First connecting portion 40 Core wire crimping portion 41 Second bottom plate portion 42, 43 Standing portion of core wire crimping portion 50 Second connecting portion 60 Contact portion 61 Terminal insertion hole 91 Bare core wire (core wire)
92 Covering edge (insulating coating)
220, 230 Caulking part of covering crimping part 221 First right caulking part 222 Second right caulking part 223 Third right caulking part 231 First left caulking part 232 Second left caulking part 233 Third left caulking part 420, 430 Core wire crimping Caulking part

Claims (2)

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 bottom plate that supports the insulating coating from one side;
3 or more caulking portions that are formed side by side in the longitudinal direction of the electric wire and are caulked against the insulating coating in a state of facing the bottom plate portion. . 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,
The portion of the upright portion that occupies a part of the distal end side is spaced in the arrangement direction of the covering crimping portion and the core crimping portion while being opposed to the bottom plate portion by being bent inward of the groove. A crimp terminal having three or more caulking portions arranged side by side.

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