JP2012155890A - Wire with terminal and terminal crimping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide wire with a terminal in which a coated crimp part of a crimp terminal is prevented from being removed from an insulation coating of the wire due to stress applied to the wire.SOLUTION: Wire 1 with a terminal comprises wire 9 and a crimp terminal 10 attached to the end of the wire 9. The crimp terminal 10 has a coated crimp part 20 which is crimped to an insulation coating 92 at the end of the wire 9, and a core wire crimp part 40 which is crimped to a core wire 91 extending from the insulation coating 92 at the end of the wire 9. The coated crimp part 20 has a bottom plate 21 which supports the insulation coating 92 from a first direction, and a first caulked portion 220 which is caulked to the insulation coating 92 by bending from a second direction opposite from the first direction. Furthermore, a second caulked portion, i.e. a raised portion 211, caulked to the insulation coating 92 in a raised state is formed on a part of the bottom plate 21.

Description

  The present invention relates to a terminal-attached electric wire including an electric wire and a crimp terminal, and a terminal crimping device for attaching a crimp terminal to an end portion of the electric wire.

  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

  By the way, in the electric wire to which the conventional crimp terminal is attached, the cover crimp portion of the crimp terminal is bent against the insulation coating by bending the bottom plate portion supporting the insulation coating portion of the wire and the direction facing the bottom plate portion. A caulking portion caulked from one direction. That is, in the conventional electric wire with a terminal, the covering crimping portion of the crimping terminal is only caulked from one direction with respect to the insulating coating of the electric wire. Moreover, the insulation 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 concerning the 1st invention is provided with the crimp terminal attached to the end of the electric wire and 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 first invention, the cover crimping portion of the crimp terminal includes the bottom plate portion that supports the insulation coating from the first direction and the insulation coating from the second direction opposite to the first direction by bending. A first caulking portion that is caulked against. Further, a second caulking portion that is caulked with respect to the insulating coating in a raised shape is formed on a part of the bottom plate portion of the coating crimping portion.

  Further, the electric wire with terminal according to the second invention has the following configuration in addition to the configuration of the electric wire with terminal according to the first invention. That is, in the electric wire with a terminal according to the second invention, the cover crimping portion of the crimp terminal has a plurality of first caulking portions arranged at intervals in the longitudinal direction of the electric wire, and the second caulking portion of the bottom plate portion is The first caulking portions are formed at positions facing each other.

  Moreover, this invention can also be grasped | ascertained as invention of the terminal crimping apparatus which crimps | bonds a crimp terminal to the edge part of an electric wire. That is, the terminal crimping apparatus according to the first invention includes an anvil and a crimper that are opposed to each other and supported so as to be accessible. The anvil and crimper sandwich the crimping terminal having the coated crimping part formed with the bottom plate part supporting the insulation coating at the end part of the electric wire and the standing part standing up from the bottom plate part, so that the coated crimped part becomes the end part of the electric wire. Crimp to the insulation coating. Furthermore, the terminal crimping apparatus according to the first aspect of the present invention includes a caulking projection and a bending portion. The caulking protrusion is formed on a part of the support surface of the anvil that supports the bottom plate part of the cover crimping part from the first direction, and insulates while forming a part of the bottom plate part into a shape protruding toward the insulating cover. This is the part that is caulked against the coating. On the other hand, the bending part is formed in the crimper and is in contact with the standing part of the coated crimping part, so that the part of the leading end side of the standing part is bent with respect to the first direction while bending the standing part. It is a portion caulked against the insulation coating from the direction.

  The terminal crimping apparatus according to the second invention has the following configuration in addition to the configuration of the terminal crimping apparatus according to the first invention. That is, in the terminal crimping apparatus according to the second aspect of the invention, the crimper bend forming part is formed by applying a plurality of standing parts formed side by side to the covering crimping part of the crimping terminal at intervals in the longitudinal direction of the electric wire. It is a caulking part. Furthermore, in the terminal crimping apparatus according to the second aspect of the present invention, the caulking projection of the anvil is formed at a position between the plurality of standing portions in the covering crimping portion disposed on the support surface in the longitudinal direction of the electric wire.

  In the present invention, the covering crimp portion of the crimp terminal is caulked from both sides of the insulating coating at the first caulking portion and the second caulking portion with respect to the insulating coating having flexibility in the electric wire. For this reason, the coated crimp portion of the crimp terminal according to the present invention holds the insulating coating of the electric wire more firmly than the coated crimp portion of the conventional terminal-attached electric wire. 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.

  In the second invention, the cover crimping portion of the crimping terminal has a plurality of first caulking portions arranged at intervals in the longitudinal direction of the electric wire, and the second caulking portion of the bottom plate portion is a plurality of first caulking portions. It is formed in the position which opposes between each part. Therefore, as will be described later, the portion of the insulating coating at the end portion of the electric wire is held in a bent state at the portion where the second caulking portion contacts by the coating crimping portion. Therefore, in the second invention, the cover crimping portion of the crimp terminal more securely 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. 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.

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 the electric wire 1 with a terminal. It is a cross-sectional view of the portion of the coated crimping portion in the electric wire with terminal 1. It is a perspective view of the crimp terminal 10 with which the electric wire 1 with a terminal is provided. 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 70 which concerns on 1st Embodiment of this invention with which the crimp terminal 10 and the electric wire were set. It is a top view of the part which supports the covering crimping | compression-bonding part of the crimp terminal in the anvil with which the terminal crimping apparatus 70 is provided. 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. It is a perspective view of crimp terminal 10A with which electric wire 1A with a terminal is provided. It is side sectional drawing of the part containing the covering crimping | compression-bonding part of 10 A of crimp terminals. It is a top view of the part containing the covering crimping | compression-bonding part of 10 A of crimp terminals. It is front sectional drawing of terminal crimping apparatus 70A which concerns on 2nd Embodiment of this invention with which crimp terminal 10A and the electric wire were set. It is a top view of the part which supports the insulation coating of the electric wire in the anvil with which terminal crimping apparatus 70A is provided. It is side sectional drawing of terminal crimping apparatus 70A in which the crimp terminal 10 and the electric wire were set.

  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.

<Wire with terminal: First embodiment>
First, the configuration of the terminal-attached electric wire 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 6. 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. Moreover, the cross section represented by hatching in FIG. 4 is a DD cross section shown in FIG.

<Wire>
As shown in FIGS. 1 to 3, 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. 4 to 6. As shown in FIG. 4 to FIG. 6, the crimp terminal 10 is formed in a line along the linear direction, and the cover crimp part 20, the first connection part 30, the core wire crimp part 40, and the second connection 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 on which the covered end portion 92 of the electric wire 9 to which the crimp terminal 10 is attached is placed. 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. 1 and 2, 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. 3 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 FIGS. 4 to 6, 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 (X-axis direction) and the width direction (Y-axis 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.

<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 on which the bare core wire 91 in the electric wire 9 to which the crimp terminal 10 is attached is placed. 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. 4 to 6, the second bottom plate portion 41 and the upright portions 42 and 43 are all plate-like, but they may be curved plate-like.

<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 4 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.

<Crimp terminal: Other>
As shown in FIG. 1 to FIG. 3, 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, among the inner surfaces of the coated crimping portion 20 that contact the insulating coating 92, the inner surface of the first bottom plate portion 21 that supports the insulating coating 92 facing the caulking portion 230 is raised to the coated end portion 92 in a raised shape. A raised portion 211 that is caulked against is formed. The raised portion 211 is formed in a state of biting into the covering end portion 92 at a position facing the caulking portion 220 in the first bottom plate portion 21. For example, in the terminal-attached electric wire 1, the height dimension of the raised portion 211 on the inner side surface of the first bottom plate portion 21 is smaller than the thickness of the insulating coating on the electric wire 9.

  In addition, although the protruding part 211 shown by FIG. 1 is a truncated cone shape, it may be other shapes, such as a column shape and a prism shape. In addition to the example in which the plurality of raised portions 211 are formed on the first bottom plate portion 21, an example in which only one raised portion 211 is formed on the first bottom plate portion 21 is also conceivable.

  The raised portion 211 is formed when the crimp terminal 10 is crimped to the end portion of the electric wire 9 by the terminal crimping device 70 described later. That is, the raised portion 211 is formed by protruding a part of the outer surface of the first bottom plate portion 21 of the cover crimping portion 20 inward by a terminal crimping device 70 described later. Therefore, as shown in FIG. 1, a recess 212 corresponding to the raised portion 211 on the inner surface is formed on the outer surface of the first bottom plate portion 21.

  The first bottom plate portion 21 is an example of a bottom plate portion that supports the covering end portion 92 from the first direction (the negative direction of the Z axis). The caulking portion 220 of the upright portion 22 is an example of a first caulking portion that is caulked from the second direction (the positive direction of the Z axis) to the covering end portion 92 by bending. The raised portion 211 is an example of a second caulked portion that is caulked with respect to the covering end portion 92 in a raised shape in a part of the first bottom plate portion 21.

  In the terminal-attached electric wire 1 having the above-described configuration, the covered crimp portion 20 of the crimp terminal 10 is a portion of the caulking portion 220 and the raised portion 211 with respect to the covered end portion 92 having flexibility, and the covered end portion 92. It is caulked from both sides. 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. 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.

  Further, the raised portion 211 is formed when the crimp terminal 10 is crimped to the end of the electric wire 9 by a terminal crimping device 70 described later. Therefore, the terminal-attached electric wire 1 can be easily realized by employing a conventional general crimp terminal 10.

<Terminal Crimping Device: First Embodiment>
Next, the terminal crimping apparatus 70 according to the first embodiment of the present invention will be described with reference to FIGS. 7 and 8. The crimp terminal 10 is crimped to the electric wire 9 using the terminal crimping device 70. FIG. 7 is a cross-sectional view of the terminal crimping device 70 in which the crimp terminal 10 and the electric wire 9 are set. FIG. 8 is a plan view of a portion of the anvil 71 provided in the terminal crimping device 70 that supports the cover crimping portion 20 of the crimp terminal 10. Note that the cross section of the terminal crimping device 70 shown in FIG.

  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. 7, 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 portion 40 is not shown in FIG. In addition, the part in which the molding surfaces 721 and 722 are formed in the crimper 72 is an example of a bending molding part.

  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. 2, 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.

  A plurality of caulking projections 712 are formed on a part of the support surface 711 that supports the first bottom plate portion 21 of the covering crimping portion 20 in the anvil 71. These caulking projections 712 are formed in a part of a region of the support surface 711 that supports the coated crimping portion 20. When the anvil 71 and the crimper 72 approach and sandwich the covering crimping portion 20, the caulking projection 712 bulges a part of the first bottom plate portion 21 of the covering crimping portion 20 toward the covering end portion 92. It crimps with respect to the covering edge part 92, shape | molding to a shape. As a result, the raised portions 211 shown in FIGS. 1 and 3 are formed on the first bottom plate portion 21 of the cover crimping portion 20.

  A stopper 713 that positions the crimp terminal 10 in contact with the end of the crimp terminal 10 supported by the support surface 711 is formed on the outer edge portion of the support surface 711 in the anvil 71. The crimp terminal 10 is positioned at an appropriate position in the terminal crimping device 70 by being set in the terminal crimping device 70 in a state where the end of the crimp terminal 10 is in contact with the stopper 13.

  By using the terminal crimping device 70, the terminal-attached electric wire 1 is easily manufactured by adopting a conventional general crimp terminal 10.

<Wire with terminal: Second embodiment>
Next, a terminal-attached electric wire 1A according to a second embodiment of the present invention will be described with reference to FIGS. The terminal-attached electric wire 1 </ b> A includes an electric wire 9 and a crimp terminal 10 </ b> A that is crimped to an end portion of the electric wire 9. The electric wire with terminal 1A differs from the electric wire with terminal 1 only in the structure of the portion of the coated crimping portion 20 of the crimp terminal 10A. In the following, in FIG. 9 to FIG. 13, the same constituent elements as those shown in FIG. 1 to FIG. Hereinafter, only differences between the crimp terminal 10A and the crimp terminal 10 will be described.

  9 and 10 are a side view and a plan view of the main part of the terminal-attached electric wire 1A. FIG. 11 is a perspective view of a crimp terminal 10A included in the terminal-attached electric wire 1A. FIGS. 12 and 13 are a side sectional view and a plan view of a portion including the cover crimping portion of the crimp terminal 10A. Moreover, the broken line in FIG. 9 is a hidden line. Moreover, the cross section represented by hatching in FIG. 12 is the EE cross section shown in FIG.

  As shown in FIGS. 9 to 13, the cover crimping portion 20 of the crimping terminal 10 </ b> A has two sets of upright portions (22, 23) and (24, 25) arranged at intervals in the extending direction (X-axis direction). have. And the caulking part 220,230,240,250 where a part of the front end side of each of these two sets of upright parts (22,23) and (24,25) is caulked in the direction facing the first bottom plate part 21 is there.

  Further, as shown in FIGS. 1 and 2, in the two sets of upright portions (22, 23) and (24, 25), the caulking portions 220, 230 in one set and the caulking portions 240, in the other set, 250 is an overlap-type crimping part.

  In the terminal-attached electric wire 1 </ b> A, the caulking portion 220 of the upright portion 22 in one set and the caulking portion 240 of the upright portion 24 in the other set are bent in a direction facing the first bottom plate portion 21 and covered end portion 92. It is directly crimped against. Further, the caulking portion 230 of the upright portion 23 in one set and the caulking portion 250 of the upright portion 25 in the other set are bent in a direction facing the first bottom plate portion 21 and are respectively outside the caulking portions 22 and 24. Crimped against the side.

  That is, in the covered crimp portion 20 of the crimp terminal 10A provided in the terminal-attached electric wire 1A, the two crimping portions 220 and 240 to be crimped to the covered end portion 92 are arranged on the covered end portion 92 in a state of being spaced apart in the extending direction. It is crimped.

  In FIG.12 and FIG.13, the 1st bottom board part 21 is divided and shown by three area | regions 21A, 21C, and 21B from which the position of an extending | stretching direction differs. The first area 21 </ b> A is an area facing the caulking portion 220 when one caulking portion 220 is moved to the covering end portion 92. The second area 21 </ b> B is an area facing the caulking portion 240 when the other caulking portion 240 is caulked to the covering end portion 92. The third region 21C is a region between the first region 21A and the second region 21B, that is, a region facing between the two crimping portions 220 and 240 crimped to the covering end 92.

  Further, as shown in FIG. 1, in the crimp terminal 10 </ b> A of the terminal-attached electric wire 1 </ b> A, the raised portion 211 of the first bottom plate portion 21 is formed at a position facing each of the two caulking portions 220 and 240. . That is, the raised portion 211 is formed to be raised in the third region 21 </ b> C in the first bottom plate portion 21. The raised portion 211 is formed when the crimp terminal 10A is crimped to the end of the electric wire 9 by a terminal crimping device 70A described later.

  For example, in the electric wire with terminal 1 </ b> A, the height dimension of the raised portion 211 on the inner side surface of the first bottom plate portion 21 is equal to or larger than the thickness dimension of the insulation coating on the electric wire 9. Therefore, as shown in FIG. 1, the covering end portion 92 is formed by a portion where the raised portion 211 of the first bottom plate portion 21 comes into contact with the covering crimping portion 20, that is, two caulking portions 220 and 240 aligned in the extending direction. It is held in a curved state at the intermediate portion.

  The coated crimping portion 20 of the crimp terminal 10A holds the coated end portion 92 in a curved state, so that the coated end portion 92 against the stress applied to the electric wire 9, particularly the tensile stress applied to the electric wire 9 in the extending direction. Is held 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.

<Terminal Crimping Device: Second Embodiment>
Next, a terminal crimping apparatus 70A according to a second embodiment of the present invention will be described with reference to FIGS. The crimp terminal 10A is crimped to the electric wire 9 using a terminal crimping apparatus 70A. 14 to 16, the same constituent elements as those shown in FIGS. 7 and 8 are denoted by the same reference numerals. Hereinafter, only the differences from the terminal crimping apparatus 70 in the terminal crimping apparatus 70A will be described.

  FIG. 14 is a front sectional view of a terminal crimping apparatus 70A in which the crimp terminal 10 and the electric wire 9 are set. FIG. 15 is a plan view of a portion of the anvil 71A included in the terminal crimping device 70A that supports the cover crimping portion 20 of the crimp terminal 10A. FIG. 16 is a side sectional view of a terminal crimping apparatus 70A 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. 14 is 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 </ b> A includes an anvil 71 </ b> A and a crimper 72 that are supported so as to be able to approach and separate from each other while facing each other. That is, the terminal crimping apparatus 70A has a configuration in which the anvil 71 in the terminal crimping apparatus 70 is replaced with another anvil 71A.

  In the terminal crimping device 70A, the molding surfaces 721 and 722 of the crimper 72 are formed so that two sets of upright portions (22, 23) and (24, 25) in the coated crimping portion 20 of the crimped terminal 10A are connected to the coated end 92. Close. Therefore, as shown in FIG. 16, the molding surfaces 721 and 722 of the crimper 72 are formed in a range extending over two sets of upright portions (22, 23) and (24, 25) in the extending direction.

  Further, in the terminal crimping apparatus 70A, the anvil 71A is formed with a support surface 711 that supports the first bottom plate portion 21 and the second bottom plate portion 41 of the cover crimping portion 20 in the crimp terminal 10 from the outer surface.

  When one or both of the anvil 71A and the crimper 72 move in the direction in which they approach, the crimp terminal 10A is crimped to the coated end 92 and the bare core 91 while being crushed between the anvil 71A and the crimper 72. The At that time, the caulking portions 220 and 240 of the covering crimping portion 20 are bent along the molding surface 721 of the crimper 72 in a direction facing the first bottom plate portion 21 and are caulked to the covering end portion 92. Further, the caulking portions 230 and 250 of the covering crimping portion 20 are 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 caulking portions 220 and 240. 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 molding surface 723 of the crimper 72 and are caulked to the bare core wire 91.

  In addition, a caulking projection 714 that forms a ridge line extending in the width direction (Y-axis direction) is formed on a part of the support surface 711 that supports the first bottom plate portion 21 of the covering crimping portion 20 in the anvil 71A. ing. The caulking projection 714 is formed on a portion of the support surface 711 that supports the third region 21 </ b> C of the first bottom plate portion 21. That is, the caulking projection 714 is positioned between the two sets of upright portions (22, 23) and (24, 25) in the covering crimping portion 20 disposed on the support surface 711 in the extending direction (X-axis direction). Is formed.

  When the anvil 71 </ b> A and the crimper 72 approach and sandwich the covering crimping portion 20, the caulking projection 714 moves the third region 21 </ b> C in the first bottom plate portion 21 of the covering crimping portion 20 toward the covering end 92. It crimps with respect to the covering edge part 92, shape | molding in the raised shape. As a result, the raised portions 211 shown in FIG. 9 are formed on the first bottom plate portion 21 of the covering crimping portion 20.

  By the terminal crimping device 70A described above, the raised portion 211 of the crimp terminal 10A in the terminal-attached electric wire 1A is formed when the crimp terminal 10A is crimped to the end of the electric wire 9. Therefore, the electric wire with terminal 1A can be easily realized by adopting the crimp terminal 10A.

  A crimped terminal 10A having a raised portion 211 as shown in FIG. 9 and a wire 9A with a terminal provided with the crimped terminal 10A and a terminal crimp for producing the terminal-equipped wire 1A. The device 70A is also an example of an embodiment of the present invention.

<Others>
In the crimp terminal 10 of the first embodiment shown above, 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, like the core crimping part 40 shown in FIG. 2, 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. Similarly, in the crimp terminal 10 </ b> A of the second embodiment, the cover crimping portion 20 includes the two sets of standing portions (22, 23) and (24, 25) of the caulking portions (220, 230) and (240, 250). It may be of a type that is crimped to the covering end 92 without overlapping.

  In the crimp terminals 10, 10 </ b> A of each embodiment, the caulking portions 220, 230, 240, 250 are portions that are bent from both sides of the covering end portion 92 and caulked. 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.

  Further, the crimp terminal 10A according to the second embodiment includes two caulking portions 220 and 240 that are lined up at intervals in the extending direction as a portion that is caulked to the covering end portion 92. However, it is also conceivable that the crimp terminal 10 </ b> A has three or more caulking portions arranged at intervals in the extending direction as a portion caulked to the covering end portion 92.

  Hereinafter, N is an integer of 2 or more. For example, when the crimp terminal 10 </ b> A has N caulking portions arranged at intervals in the extending direction as a portion caulked to the covering end portion 92, the first bottom plate portion 211 has (N−1) bulges. The part 211 is formed at a position between the N caulking parts. In this case, (N-1) caulking projections 714 are provided on the support surface 711 of the anvil 71 in the terminal crimping apparatus 70A at intervals in the extending direction.

DESCRIPTION OF SYMBOLS 1,1A Electric wire with a terminal 9 Electric wire 10,10A Crimp terminal 20 Coated crimp part 21 First bottom plate part 22,23,24,25 Standing part of the coated crimp part 30 First connection part 40 Core wire crimp part 41 Second bottom plate part 42 , 43 Standing portion of core wire crimping portion 50 Second connecting portion 60 Contact portion 61 Terminal insertion hole 70, 70A Crimping device 71, 71A Anvil 72 Crimper 91 Bare core wire (core wire)
92 Covering edge (insulating coating)
211 Raised portions 220, 230, 240, 250 Caulked portions of coated crimping portions 420, 430 Caulked portions of core wire crimping portions 711 Anvil support surfaces 712, 714 Caulking projections 721, 722 Crimper molding surfaces

Claims (4)

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 cover crimping portion of the crimp terminal includes a bottom plate portion that supports the insulating coating from a first direction;
A first caulking portion caulked against the insulating coating from a second direction opposite to the first direction by bending,
A terminal-equipped electric wire, wherein a second caulking portion that is caulked with respect to the insulating coating is formed in a part of the bottom plate portion of the covering crimping portion. The covering crimping portion of the crimp terminal has a plurality of the first caulking portions arranged at intervals in the longitudinal direction of the electric wire,
The electric wire with a terminal according to claim 1, wherein the second caulking portion of the bottom plate portion is formed at a position facing each of the plurality of first caulking portions. The covering crimping is carried out by sandwiching a crimping terminal having a covering crimping portion formed with a bottom plate portion supporting the insulating coating at the end of the electric wire and supporting an insulating coating at the end portion of the electric wire and a standing portion standing up from the bottom plate portion. A terminal crimping device comprising an anvil and a crimper for crimping a portion to the insulating coating at the end of the wire,
In the anvil, the insulating plate is formed on a part of a support surface that supports the bottom plate part of the covering crimping part from a first direction, and a part of the bottom plate part is formed into a shape protruding toward the insulating coating. A caulking projection for caulking against the coating;
By forming the crimper and contacting the upright portion of the covering crimping portion, the tip side of the upright portion is bent from the second direction opposite to the first direction while bending the upright portion. A terminal crimping device comprising: a bending portion that caulks against an insulating coating. The bending portion of the crimper is a portion for caulking the plurality of upright portions formed on the covering crimping portion of the crimping terminal so as to be spaced apart in the longitudinal direction of the electric wire against the insulating coating. ,
The said caulking projection part of the said anvil is formed in the position between the said several standing parts in the said covering crimping | compression-bonding part arrange | positioned in the said support surface in the longitudinal direction of the said electric wire. Terminal crimping device.

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