JP2019185937A - Cable with terminal - Google Patents

Abstract

To provide a cable with a terminal, capable of suppressing deterioration of a performance.SOLUTION: A cable with a terminal 1 includes: a core wire 11; an electric wire 10 having a coating 12 that coats the core wire, and in which a tip end part of the core wire is exposed from the coating; and a crimp terminal 20 having an electric wire connection part 22 wound to the core wire and the coating, and integrally coating the core wire and the coating. The electric wire connection part includes: a coating crimp part 22B crimped to the coating; and a core wire crimp part 22A crimped to the core wire. The core wire crimp part includes: a wide part 22AW as an end part opposite to the coating crimp part side in an axial direction of the core wire; and a base end part 22AB as a part on the coating crimp part side from the wide part in the axial direction. A side wall part 22WS of the wide part is characterized so as to be projected to the wide direction of the electric wire connection part to a side wall part 22BS of the base end part.SELECTED DRAWING: Figure 12

Description

  The present invention relates to an electric wire with a terminal.

  There are crimp terminals that are crimped to the core wire of an electric wire and terminal crimping apparatuses that crimp the crimp terminal to the electric wire. As an example of a terminal crimping apparatus, Patent Document 1 discloses a technique related to a terminal crimping apparatus that crimps a wire barrel piece to a core wire placed on a terminal fitting. In the terminal crimping device of Patent Document 1, the crimper protrudes from the main body on which the slidable contact surface is formed, and protrudes on both sides in the direction in which the electric wire extends from the main body, and further protrudes inward in the direction intersecting the slidable contact surface. When the wire barrel piece is crimped to the core wire, an abutting portion that abuts the wire barrel piece from both sides in the direction in which the electric wire extends is provided. According to the technique of patent document 1, it is supposed that it can suppress that the length dimension of a terminal metal fitting becomes large about the direction where an electric wire is extended before and after crimping | compression-bonding.

JP 2010-80194 A

  Here, the room for improvement is still left at the point which suppresses the performance fall of the electric wire with a terminal. For example, if the extension amount of the crimp terminal and the core wire during crimping is large, the performance of the electric wire with terminal may vary.

  The objective of this invention is providing the electric wire with a terminal which can suppress a performance fall.

  The electric wire with a terminal of the present invention has a core wire and a coating covering the core wire, the electric wire with the tip portion of the core wire exposed from the coating, and the core wire wound around the core wire and the coating. And a crimp terminal having an electric wire connecting portion that integrally covers the covering, wherein the electric wire connecting portion is a covered crimp portion that is crimped to the covering, and a core wire crimping portion that is crimped to the core wire. The core wire crimping portion has a wide portion that is an end opposite to the coated crimping portion side in the axial direction of the core wire, and is closer to the coated crimping portion side than the wide portion in the axial direction. A base end portion that is a portion, and the side wall portion of the wide portion protrudes in the width direction of the wire connection portion with respect to the side wall portion of the base end portion.

  In the electric wire with a terminal according to the present invention, the core wire crimping portion is a wide portion that is an end opposite to the coated crimping portion side in the axial direction of the core wire, and a portion closer to the coated crimping portion than the wide portion in the axial direction. And a certain proximal end. The side wall part of the wide part protrudes in the width direction of the electric wire connecting part with respect to the side wall part of the base end part. According to the electric wire with a terminal concerning the present invention, the amount of extension of an electric wire connection part is reduced by having a wide part. By suppressing the variation in the length dimension by reducing the amount of elongation of the wire connecting portion, there is an effect that the deterioration of the performance of the electric wire with terminal is suppressed.

Drawing 1 is a perspective view showing the state before crimping of the crimp terminal of an embodiment. FIG. 2 shows a state before the electric wire connecting portion is bent in the crimp terminal of the embodiment. Drawing 3 is a top view showing the terminal chain object of an embodiment. FIG. 4 is a side view of the terminal crimping apparatus according to the embodiment. FIG. 5 is a cross-sectional view showing a first mold and a second mold according to the embodiment. Drawing 6 is a sectional view showing the state where an electric wire and a crimp terminal were set in a terminal crimping device of an embodiment. FIG. 7 is a side view showing the terminal cut body according to the embodiment. FIG. 8 is a side view showing the terminal cut body according to the embodiment. FIG. 9 is a front view showing a first mold according to the embodiment. FIG. 10 is a perspective view showing a first mold according to the embodiment. FIG. 11 is a bottom view showing the first mold according to the embodiment. FIG. 12 is a perspective view illustrating the terminal-attached electric wire according to the embodiment. FIG. 13 is a top view showing the terminal-attached electric wire according to the embodiment. FIG. 14 is a side view illustrating the terminal-attached electric wire according to the embodiment. FIG. 15 is a bottom view illustrating the terminal-attached electric wire according to the embodiment. FIG. 16 is a cross-sectional view illustrating the terminal-attached electric wire according to the embodiment. FIG. 17 is a cross-sectional view showing a terminal-attached electric wire according to the embodiment. FIG. 18 is a cross-sectional view illustrating the terminal-attached electric wire according to the embodiment. FIG. 19 is a cross-sectional view illustrating the terminal-attached electric wire according to the embodiment. FIG. 20 is a perspective view of a terminal-attached electric wire according to a modification of the embodiment. FIG. 21 is a top view of a terminal-attached electric wire according to a modification of the embodiment.

  Below, it explains in detail, referring to drawings for the electric wire with a terminal concerning the embodiment of the present invention. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

[Embodiment]
The embodiment will be described with reference to FIGS. The embodiment relates to an electric wire with a terminal. Drawing 1 is a perspective view showing the state before crimping of the crimp terminal of an embodiment. FIG. 2 shows a state before the electric wire connecting portion is bent in the crimp terminal of the embodiment. Drawing 3 is a top view showing the terminal chain object of an embodiment. FIG. 4 is a side view of the terminal crimping apparatus according to the embodiment. FIG. 5 is a cross-sectional view showing a first mold and a second mold according to the embodiment. Drawing 6 is a sectional view showing the state where an electric wire and a crimp terminal were set in a terminal crimping device of an embodiment. FIG. 7 is a side view showing the terminal cut body according to the embodiment. FIG. 8 is a side view showing the terminal cut body according to the embodiment. FIG. 9 is a front view showing a first mold according to the embodiment. FIG. 10 is a perspective view showing a first mold according to the embodiment. FIG. 11 is a bottom view showing the first mold according to the embodiment. FIG. 12 is a perspective view illustrating the terminal-attached electric wire according to the embodiment. FIG. 13 is a top view showing the terminal-attached electric wire according to the embodiment. FIG. 14 is a side view illustrating the terminal-attached electric wire according to the embodiment. FIG. 15 is a bottom view illustrating the terminal-attached electric wire according to the embodiment. FIG. 16 is a cross-sectional view illustrating the terminal-attached electric wire according to the embodiment. FIG. 17 is a cross-sectional view showing a terminal-attached electric wire according to the embodiment. FIG. 18 is a cross-sectional view illustrating the terminal-attached electric wire according to the embodiment. FIG. 19 is a cross-sectional view illustrating the terminal-attached electric wire according to the embodiment. 16 is an XVI-XVI cross section shown in FIG. 14, FIG. 17 is an XVII-XVII cross section shown in FIG. 14, and FIG. 18 is an XVIII-XVIII cross section shown in FIG.

  As shown in FIG. 1, the terminal-attached electric wire 1 according to the embodiment includes an electric wire 10 and a crimp terminal 20. The electric wire 10 includes a linear core wire 11 having conductivity and an insulating coating 12 that covers the core wire 11. At the distal end portion of the electric wire 10, the distal end portion 11 </ b> E of the core wire 11 is exposed from the coating 12. The core wire 11 of the embodiment is formed by bundling a plurality of strands of conductive metal such as copper, copper alloy, aluminum, aluminum alloy. The core wire 11 may be a twisted core wire obtained by twisting a plurality of strands. The coating 12 is a cylindrical wire coating that covers the outer peripheral surface of the core wire 11. The coating 12 is formed, for example, by extruding an insulating resin material or the like. As the resin material of the coating 12, a material appropriately selected from PP, PVC, cross-linked PE and the like in consideration of wear resistance, chemical resistance, heat resistance and the like is used.

  The crimp terminal 20 is a terminal fitting that is crimped to the distal end portion 11E of the core wire 11 and the distal end portion 12E of the covering 12. The crimp terminal 20 is formed in a predetermined shape that can be connected to the mating terminal or the electric wire 10 by punching or bending the base material. The crimp terminal 20 includes a terminal connection portion 21 and a wire connection portion 22. The terminal connection portion 21 is a portion that is electrically connected to the counterpart terminal. The wire connection portion 22 is a portion that is crimped to the wire 10 and is electrically connected to the tip portion 11E of the core wire 11. The wire connecting portion 22 has a bottom portion 24 and a pair of barrel piece portions 25 and 26. The pair of barrel pieces 25 and 26 extend from both ends of the bottom portion 24 in the width direction, and are wound around the electric wire 10.

A connecting portion 23 is provided between the terminal connecting portion 21 and the wire connecting portion 22. In other words, the terminal connection portion 21 and the wire connection portion 22 are connected via the connection portion 23. The connecting portion 23 has side walls 23 a and 23 a that connect the side walls 21 a and 21 a of the terminal connection portion 21 and the pair of barrel pieces 25 and 26 that are the side walls of the wire connection portion 22. A pair of barrel pieces 25,
26 includes a first barrel piece 25 and a second barrel piece 26.

  One side wall 23 a of the connecting part 23 connects the one side wall 21 a of the terminal connecting part 21 and the first barrel piece part 25, and the other side wall 23 a of the connecting part 23 is connected to the other side wall 21 a of the terminal connecting part 21. The second barrel piece 26 is connected. The height of the side wall 23a is lower than the height of the pair of barrel pieces 25 and 26 and the side wall 21a. More specifically, the height of the side wall 23a decreases as it goes from the terminal connection portion 21 to the wire connection portion 22.

  The crimp terminal 20 may be a male terminal or a female terminal. The terminal connection portion 21 is molded into a male mold when the crimp terminal 20 is a male terminal, and is molded into a female mold when the crimp terminal 20 is a female terminal.

  In the description of the crimp terminal 20, the connection direction with the counterpart terminal, that is, the insertion direction with the counterpart terminal is referred to as a “first direction L”. The first direction L is the longitudinal direction of the crimp terminal 20. The first direction L corresponds to the axial direction of the core wire 11 crimped to the crimp terminal 20. One direction orthogonal to the first direction L is referred to as a “second direction W”, and a direction orthogonal to the first direction L and the second direction W is referred to as a “third direction H”. The second direction W corresponds to the width direction of the crimp terminal 20, and the third direction H corresponds to the height direction of the crimp terminal 20.

  In the molding process, the crimp terminal 20 is molded into a flat plate shape. The plate-like crimp terminal 20 has a terminal connection portion 21 formed in a cylindrical shape as shown in FIG. 1 in the terminal connection portion forming step. In the terminal connection portion forming step, the terminal connection portion 21 is bent. The terminal connection portion 21 of the embodiment is formed in a cylindrical shape having a rectangular cross section. The electric wire connection part 22 is shape | molded so that the cross-sectional shape when it sees from the 1st direction L may become U shape in an electric wire connection part shaping | molding process. In the electric wire connection part forming step, the electric wire connection part 22 is bent.

  Moreover, as shown in FIG. 2, the water stop member 30 is affixed on the electric wire connection part 22 of embodiment. The pasting step may be executed before the wire connection portion forming step or after the wire connection portion forming step.

  As shown in FIG. 1, the bottom portion 24 of the electric wire connection portion 22 of the embodiment is a portion that becomes the bottom wall of the electric wire connection portion 22. The bottom 24 has a U-shaped cross section when viewed from the first direction L. The length direction of the bottom portion 24 is along the first direction L, and the width direction of the bottom portion 24 is along the second direction W. On the bottom 24, the tip portion 11E of the core wire 11 and the tip portion 12E of the coating 12 are placed during the crimping process. The first barrel piece 25 extends from one end in the width direction of the bottom 24. The second barrel piece 26 extends from the other end in the width direction of the bottom 24. In the wire connection portion 22 formed in a U shape, when the end portion of the wire 10 is placed on the bottom portion 24, the first barrel piece portion 25 and the second barrel piece portion 26 are electrically connected from both sides in the second direction W. 10 is enclosed.

  The first barrel piece 25 and the second barrel piece 26 may have the same length from the base on the bottom 24 side to the end surfaces of the tips 25a and 26a, and one length is longer than the other. Also good. In the crimp terminal 20 of the embodiment, the length from the root to the tip 26a of the second barrel piece 26 is longer than the length from the root to the tip 25a of the first barrel piece 25.

  For example, the first barrel piece 25 and the second barrel piece 26 are wound around the electric wire 10 while overlapping each other. In the embodiment, the second barrel piece 26 overlaps the outside of the first barrel piece 25. The first barrel piece 25 and the second barrel piece 26 may be crimped so-called B-crimps. In the B crimp, each of the first barrel piece portion 25 and the second barrel piece portion 26 is bent toward the bottom portion 24 side and crimped so that the distal ends 25 a and 26 a are pressed toward the electric wire 10. Since the watertight member 30 is provided in the crimp terminal 20 of the embodiment, a caulking process of a type in which the second barrel piece portion 26 is overlapped on the outside of the first barrel piece portion 25 described above is employed.

  The distal end portion of the electric wire 10 is inserted into the U-shaped opening of the electric wire connecting portion 22, that is, the space inside the U-shaped electric wire connecting portion 22 from the gap between the distal ends 25 a and 26 a. The wire connection portion 22 is formed so that the end of the wire 10 can be easily inserted. Specifically, as for the electric wire connection part 22, the space | interval of the 2nd direction W of the 1st barrel piece part 25 and the 2nd barrel piece part 26 is expanding as it goes to the end surface of the front-end | tip 25a, 26a from the bottom part 24 side.

  As shown in FIG. 2, the wire connecting portion 22 includes a core wire crimping portion 22A, a covering crimping portion 22B, and a connecting crimping portion 22C. The core wire crimping portion 22 </ b> A is a portion that is crimped to the distal end portion 11 </ b> E of the core wire 11. The coating crimping part 22B is a part that is crimped to the tip portion 12E of the coating 12. The connecting crimping part 22C is a part that connects the core crimping part 22A and the covering crimping part 22B. The connection crimping portion 22 </ b> C is crimped to a boundary portion between the tip portion 12 </ b> E of the core wire 11 and the tip portion 12 </ b> E of the coating 12 in the electric wire 10. The electric wire connecting portion 22 of the embodiment is a single piece in which the bottom 24, the first barrel piece 25 and the second barrel piece 26 are continuous along the second direction W. The core wire crimping portion 22A, the covering crimping portion 22B, and the connecting crimping portion 22C are arranged in the order of the core wire crimping portion 22A, the connecting crimping portion 22C, and the covering crimping portion 22B from the terminal connecting portion 21 side along the first direction L. It is out.

  A serration region 27 is provided on the inner wall surface of the electric wire connecting portion 22, that is, the wall surface on the side covering the electric wire 10. The serration region 27 is a core wire holding region that holds the core wire 11. The serration region 27 is a region including a surface wound around the core wire 11 on the inner wall surface of the wire connecting portion 22. In the serration region 27, a plurality of recesses, a plurality of projections, or a combination of recesses and projections is arranged. A recessed part or a convex part increases the contact area of the electric wire connection part 22 and the core wire 11, and raises the adhesive strength of both. The serration region 27 of the embodiment is a rectangular region, and a plurality of recesses 27a are formed at different positions in the first direction L.

  Here, it is not preferable that a liquid such as water enters between the core wire 11 and the wire connection portion 22 crimped to the core wire 11. For example, when the metal material of the core wire 11 and the metal material of the wire connection part 22 are different in the magnitude of the ionization tendency, there is a possibility of corrosion. As an example, when the material of the core wire 11 is aluminum and the material of the wire connection part 22 is copper, the core wire 11 may corrode. The crimp terminal 20 of the embodiment is provided with a water stop member 30. The water stop member 30 suppresses the intrusion of liquid between the electric wire connection portion 22 and the core wire 11.

  The water stop member 30 is a member formed in a sheet shape mainly including an adhesive such as an acrylic adhesive. As the water stop member 30 of the embodiment, a pressure-sensitive adhesive sheet formed by soaking a sheet-like nonwoven fabric with a pressure-sensitive adhesive and having an adhesive effect on both sides is used.

  The water stop member 30 is affixed on the inner wall surface of the flat wire connection part 22 shown in FIG. 2, for example. As shown in FIG. 2, the water stop member 30 is formed in a predetermined shape and includes a first water stop portion 31, a second water stop portion 32, and a third water stop portion 33. The first water stop portion 31 stops the portion where the first barrel piece portion 25 and the second barrel piece portion 26 overlap after completion of the pressure bonding. That is, the first water stop portion 31 is sandwiched between the first barrel piece portion 25 and the second barrel piece portion 26 that overlap each other, and between the first barrel piece portion 25 and the second barrel piece portion 26. Form a water stop area. The first water stop portion 31 of the embodiment is disposed in the second barrel piece portion 26 and extends along the first direction L.

  The second water stop part 32 stops the terminal connection part 21 from the tip of the core wire 11. The second water stop portion 32 is disposed at an end portion of the electric wire connection portion 22 on the terminal connection portion 21 side, and extends along the second direction W. It is desirable that at least a part of the second water stop portion 32 is provided in a region where the core wire 11 is placed. The second water stop portion 32 is, for example, sandwiched between the first barrel piece portion 25 and the second barrel piece portion 26 that overlap each other, so that the first barrel piece portion 25 and the second barrel piece portion 26 are separated from each other. A water stop area is formed in the gap. The 2nd water stop part 32 can also block | close the clearance gap at the side of the terminal connection part 21 rather than the front-end | tip of the core wire 11 by mutually overlapping in a crimping | compression-bonding process. The 2nd water stop part 32 suppresses the water immersion from the terminal connection part 21 side between the electric wire connection part 22 and the core wire 11. FIG.

  The third water stop portion 33 suppresses the intrusion of water from the gap between the wire connection portion 22 and the coating 12. The third water stop portion 33 is disposed at the end of the electric wire connection portion 22 opposite to the terminal connection portion 21 side, and extends along the second direction W. The third water stop part 33 forms a water stop region between the cover 12 and the wire connection part 22 by being sandwiched between the cover 12 and the wire connection part 22.

  The crimp terminal 20 shown above is processed into a form having a flat wire connecting portion 22 shown in FIG. 2 through a pressing process for one metal plate as a base material. In the subsequent sticking step, the water stop member 30 is stuck to the flat wire connecting portion 22. Thereafter, the crimp terminal 20 is formed with a terminal connection portion 21 and a U-shaped wire connection portion 22 in the bending step.

  In the embodiment, the terminal chain 40 shown in FIG. 3 is formed by a pressing process or a bending process. As shown in FIG. 3, the terminal chain 40 is a chain of a plurality of crimp terminals 20. The terminal chain 40 is formed from a single metal plate. The terminal chain 40 is supplied to the terminal crimping device 100 (FIG. 4). The terminal crimping apparatus 100 performs a crimping process and a terminal cutting process on the terminal chain 40. The crimping process is a process of crimping the crimp terminal 20 of the terminal chain 40 by crimping the crimp terminal 20 to the electric wire 10. The terminal cutting step is a step of cutting the crimp terminal 20 crimped to the electric wire 10 from the terminal chain 40.

  The terminal chain 40 is an assembly of the crimp terminals 20. In the terminal chain 40, one crimp terminal 20 is connected to another crimp terminal 20 via a connecting piece 41 and a connecting portion 42. The connecting piece 41, the crimp terminal 20, and the connecting portion 42 are formed from the same base material and are integrated. In the terminal chain 40, the crimp terminals 20 face the same direction and are arranged in parallel at equal intervals. In the terminal chain 40, one end of each crimp terminal 20 is connected to each other by a connecting piece 41. The shape of the connecting piece 41 is, for example, a rectangular elongated plate. The connecting piece 41 extends along the second direction W. The wire connecting portion 22 is connected to the connecting piece 41 via the connecting portion 42. More specifically, the connecting portion 42 connects the end of the bottom 24 opposite to the terminal connecting portion 21 side to the connecting piece 41.

  A plurality of terminal feed holes 41 a are formed in the connecting piece 41. The terminal feed holes 41 a are arranged at equal intervals along the feed direction of the terminal chain 40. The terminal feed hole 41a is a through hole that penetrates the connecting piece 41 in the plate thickness direction. The crimping terminal 20 is positioned with respect to the crimping device 102 described later by the terminal feed hole 41a. The terminal chain 40 is set with respect to the terminal crimping apparatus 100 in a state of being wound in a reel shape.

  As illustrated in FIG. 4, the terminal crimping device 100 includes a terminal supply device 101, a crimping device 102, and a driving device 103. The terminal crimping device 100 is a device called an applicator in this technical field. The terminal supply device 101 is a device that supplies the crimp terminal 20 to a predetermined crimp position. The crimping device 102 is a device that crimps the crimp terminal 20 to the electric wire 10 at a predetermined crimping position. The driving device 103 is a device that operates the terminal supply device 101 and the crimping device 102.

  The terminal supply device 101 sequentially pulls out the terminal chain 40 wound in a reel shape from the outer peripheral side. The terminal supply device 101 supplies the crimp terminal 20 of the pulled terminal chain 40 to the crimp position sequentially from the top side. When the leading crimping terminal 20 is crimped to the electric wire 10 and is disconnected from the connecting piece 41, the terminal supply device 101 supplies the crimping terminal 20 that newly becomes the leading to the crimping position. The terminal supply device 101 performs a supply operation every time the crimping process and the terminal cutting process of one crimp terminal 20 are completed, and supplies the next crimp terminal 20 to the crimping position.

  The terminal supply device 101 includes a terminal feed member 101a and a power transmission mechanism 101b. The terminal feed member 101 a has a protrusion that is inserted into the terminal feed hole 41 a of the connecting piece 41. The terminal feed member 101a moves the terminal chain 40 in the feed direction in a state where the protrusion is inserted into the terminal feed hole 41a. The power transmission mechanism 101b operates the terminal feed member 101a in conjunction with a crimping operation (a vertical movement of a ram 114A or the like described later) by the crimping device 102. The terminal supply device 101 supplies the crimp terminal 20 to the crimping position by moving the terminal feed member 101a in the vertical direction and the feed direction in conjunction with the crimping operation of the crimp device 102.

  The crimping device 102 executes a crimping process for crimping the supplied crimping terminal 20 to the electric wire 10 and a terminal cutting process for separating the crimping terminal 20 from the connecting piece 41. The crimping device 102 includes a crimping machine 110 and a terminal cutting mechanism 120.

  The crimping machine 110 is a device that crimps the crimp terminal 20 to the electric wire 10 by crimping the crimp terminal 20 to the end of the electric wire 10. The crimping machine 110 according to the embodiment crimps the crimp terminal 20 to the wire 10 by crimping the first barrel piece 25 and the second barrel piece 26 of the crimp terminal 20 around the core wire 11 and the covering 12 of the wire 10. Crimp to. The crimping machine 110 includes a frame 111, a first mold 112, a second mold 113, and a power transmission mechanism 114.

  The frame 111 includes a base 111A, an anvil support 111B, a transmission support 111C, and a support 111D. The base 111 </ b> A is a member that forms the base of the terminal crimping apparatus 100. 111 A of bases are fixed with respect to the mounting base in which the terminal crimping apparatus 100 is mounted. The anvil support 111B, the transmission support 111C, and the support 111D are fixed on the base 111A.

The transmission part support 111C is disposed rearward (to the right in FIG. 6) and above (upward in FIG. 6) with respect to the anvil support 111B. More specifically, transmission unit support 111C has a standing portion 111C ₁ and ram support portion 111C _2. Standing portion 111C ₁ is disposed behind the anvil support 111B, it is erected toward the base 111A upward. Ram support portion 111C ₂ is held on top of the standing portion 111C _1. Ram support portion 111C ₂ is a supporting portion for supporting the ram 114A which will be described later. Ram support portion 111C ₂ is above the anvil support 111B, are disposed at predetermined intervals between the anvil support 111B. The support base 111 </ b> D is a base that supports the terminal connection portion 21 of the crimp terminal 20. The height position of the upper surface of the support base 111 </ b> D is substantially the same position as the height position of the upper surface of the first mold 112.

  The first mold 112 and the second mold 113 are paired. The 1st metal mold | die 112 and the 2nd metal mold | die 113 are arrange | positioned at intervals in the up-down direction. As shown in FIG. 5, the first mold 112 and the second mold 113 sandwich the crimp terminal 20 and the electric wire 10 between them, thereby crimping the crimp terminal 20 to the electric wire 10. The first mold 112 is a mold that supports the crimp terminal 20 from below. The first mold 112 is formed with two lower molds, and has a first anvil 112A as a first lower mold and a second anvil 112B as a second lower mold. The first anvil 112A and the second anvil 112B are integrally molded, for example. The second mold 113 is disposed above the first mold 112. The second mold 113 is formed with two upper molds, and has a first crimper 113A as a first upper mold and a second crimper 113B as a second upper mold.

  The first anvil 112A and the first crimper 113A face each other in the vertical direction. The first anvil 112A and the first crimper 113A cause the core wire crimping portion 12A to be crimped. That is, the first anvil 112 </ b> A and the first crimper 113 </ b> A are wound with the U-shaped core wire crimping portion 22 </ b> A around the core wire 11 of the electric wire 10 by crimping the core wire 11.

  The second anvil 112B and the second crimper 113B face each other in the vertical direction. The second anvil 112B and the second crimper 113B crimp the covering crimping part 22B. That is, the second anvil 112 </ b> B and the second crimper 113 </ b> B are wound around the covering 12 by crimping the U-shaped covering crimping portion 22 </ b> B around the covering 12 by narrowing the interval between them.

  The driving device 103 transmits power to the power transmission mechanism 114 to narrow the distance between the first mold 112 and the second mold 113 in the crimping process, and crimp the wire connecting portion 22 to the wire 10. On the other hand, when the crimping process is completed, the driving device 103 widens the distance between the first mold 112 and the second mold 113. In the crimping apparatus 102 of the embodiment, the distance between the pair of molds 112 and 113 is changed by moving the second mold 113 up and down relative to the first mold 112.

  In the first mold 112, the first anvil 112A and the second anvil 112B may be separated, and in the second mold 113, the first crimper 113A and the second crimper 113B may be separated. In this case, the drive device 103 and the power transmission mechanism 114 may be configured to vertically move the first crimper 113A and the second crimper 113B separately.

  The power transmission mechanism 114 transmits the power output from the driving device 103 to the first crimper 113A and the second crimper 113B. As shown in FIG. 4, the power transmission mechanism 114 has a ram 114A, a ram bolt 114B, and a shank 114C.

Ram 114A is a movable member which is vertically movably supported relative to the ram support portion 111C _2. A second mold 113 is fixed to the ram 114A. Therefore, first crimper 113A and second crimper 113B moves up and down with respect to the ram support portion 111C ₂ become ram 114A integrally. The shape of the ram 114A is, for example, a rectangular shape. A female thread portion (not shown) is formed in the ram 114A. The female screw portion is formed on the inner peripheral surface of a vertical hole formed from the inner side of the ram 114A toward the upper end surface.

The ram bolt 114B has a male screw portion (not shown), and this male screw portion is screwed into the female screw portion of the ram 114A. Thus, ram bolt 114B moves up and down with respect to the ram support portion 111C ₂ become ram 114A integrally. Also, ram bolt 114B has a bolt head 114B ₁ positioned above the male screw portion. The bolt head 114B ₁ is a female thread portion (not shown) is formed. Bolt female thread of the head 114B ₁ is formed on the inner peripheral surface of the vertical bore formed toward the upper end surface from the inside of the bolt head 114B _1.

Shank 114C is a cylindrical hollow member, having respective male threaded portion 114C ₁ and the connecting portion to an end portion (not shown). Male thread portion 114C ₁ of the shank 114C is formed on the lower side of the hollow member, it is screwed into the female screw portion of the bolt head 114B ₁ of the ram bolt 114B. Thus, the shank 114C moves up and down with respect to the ram support portion 111C ₂ become ram 114A and ram bolt 114B integrally. A connecting portion of the shank 114 </ b> C is connected to the driving device 103.

The drive device 103 includes a drive source (not shown) and a power conversion mechanism (not shown) that converts the drive force of the drive source into power in the vertical direction. The connecting portion of the shank 114C is coupled to the output shaft of the power conversion mechanism. Thus, the upper and lower first crimper 113A and second crimper 113B is the output of the drive unit 103 (the output of the power conversion mechanism), ram 114A, ram bolt 114B, and become shank 114C integral with respect to the ram support portion 111C ₂ Move. As a driving source of the driving device 103, an electric actuator such as an electric motor, a hydraulic actuator such as a hydraulic cylinder, a pneumatic actuator such as an air cylinder, and the like are applicable.

The relative position in the vertical direction of the first crimper 113A for the first anvil 112A, and the relative position with respect to the vertical direction of the second crimper 113B second anvil 112B, the female screw portion of the bolt head 114B ₁ and the male threaded portion of the shank 114C by adjusting the screwing amount of 114C _1, it can be varied. Nut 114D is screwed to a male screw portion 114C ₁ of the shank 114C above the ram bolt 114B. Thus, the nut 114D forms a function of a so-called lock nut with a female screw portion of the bolt head 114B _1. The nut 114D can be fixed to the relative position of the first crimper 113A and the second crimper 113B by being tightened to the ram bolt 114B side after the adjustment of the relative position is completed.

As shown in FIG. 5, the first anvil 112 </ b> A and the second anvil 112 </ b> B have concave surfaces 112 </ b> A ₁ and 112 </ b> B _{1 that} are recessed downward at the upper ends of the first anvil 112 </ b> A and the second anvil 112 </ b> B, respectively. Each concave surface 112A ₁ , 112B ₁ is formed so that the cross-sectional shape is an arc shape in accordance with the shape of each bottom portion 24 of the U-shaped core wire crimping portion 22A and the U-shaped covering crimping portion 22B. Yes. In this crimping machine 110, each of the concave surfaces 112A _1, 112B ₁ is crimped position. Bottom 24 crimping terminal 20 to have been supplied in the bottom, the bottom 24 of the core wire crimping portion 22A is placed on the concave surface 112A ₁ of the first anvil 112A, bottom 24 of the insulation crimp portion 22B is a second anvil 112B It is placed on the concave surface 112B _1. The first mold 112 is supported by the anvil support 111B with the concave surfaces 112A ₁ and 112B ₁ exposed upward.

As shown in FIG. 5, the first crimper 113 </ b> A and the second crimper 113 </ b> B are respectively formed with concave portions 113 </ b> A ₁ and 113 </ b> B _{1 that} are recessed upward. Each recess 113A _1, 113B ₁ are disposed opposite in the vertical direction with respect to each of the concave surfaces 112A _1, 112B ₁ of the first anvil 112A and second anvil 112B. Each concave portion 113A ₁ , 113B ₁ has first and second wall surfaces 115, 116 and a third wall surface 117. The first wall surface 115 and the second wall surface 116 face each other in the second direction W. The third wall surface 117 connects the upper ends of the first and second wall surfaces 115 and 116. Each concave portion 113A ₁ , 113B ₁ has the first barrel piece portion 25 and the second barrel portion 25 and the second barrel piece portion 26 in contact with the first to third wall surfaces 115, 116, 117 in contact with the first barrel piece portion 25 and the second barrel piece portion 26. The barrel piece 26 is crimped while being wound around the end of the electric wire 10. Each recess 113A _1, 113B ₁ is formed to allow such crimping operation.

  The crimp terminal 20 crimped by the crimping machine 110 is separated from the connection piece 41 by the terminal cutting mechanism 120. The terminal cutting mechanism 120 is configured to sandwich and cut the connecting portion 42 of the crimping terminal 20 supplied to the crimping position between the two terminal cutting portions, and performs the separation in conjunction with the progress of the crimping process. As shown in FIG. 4, the terminal cutting mechanism 120 is disposed on the front side (the left side in FIG. 4) with respect to the second anvil 112 </ b> B. The terminal cutting mechanism 120 includes a terminal cutting body 121, a pressing member 122, and an elastic member 123.

  The terminal cut body 121 is formed in a rectangular shape, and is arranged so as to be slidable in the vertical direction along the front surface of the second anvil 112B. As shown in FIGS. 7 and 8, a slit 121b is formed in the terminal cut body 121 from the sliding contact surface 121a to the second anvil 112B inward. The slit 121 b is a passage of the connecting piece 41 of the terminal chain 40. When the crimping terminal 20 to be crimped has been supplied to the crimping position, a part of the connecting portion 42 connected to the crimping terminal 20 protrudes from the slit 121b. The crimp terminal 20 supplied to the crimp position is supported from below by the first mold 112.

  The terminal cutting body 121 cuts the connecting portion 42 while moving up and down relatively with respect to the first mold 112 and the crimp terminal 20. Here, a position where the connecting piece 41 or the like can be inserted into the slit 121b is an initial position in the vertical direction of the terminal cutting body 121. As shown in FIG. 6, the end of the connecting portion 42 on the side of the wire connecting portion 22 protrudes from the slit 121b through the opening on the sliding contact surface 121a side (that is, the crimp terminal 20 side) of the slit 121b. In the terminal cut body 121, an upper edge portion (hereinafter referred to as “open edge”) 121 c in the opening is used as one terminal cutting portion. The other terminal cutting part is the upper surface edge 112a of the second anvil 112B.

  The pressing member 122 is fixed to the ram 114A and moves up and down integrally with the ram 114A. The pressing member 122 is disposed above the terminal cut body 121 and descends to push down the terminal cut body 121. The pressing member 122 is formed in a rectangular shape. The elastic member 123 applies an upward biasing force to the terminal cut body 121, and is made of a spring member or the like. When the pressing force from the pressing member 122 is released, the elastic member 123 returns the terminal cutting body 121 to the initial position in the vertical direction.

  In the terminal cutting mechanism 120, the pressing member 122 is lowered with the lowering of the second mold 113 during the crimping process, and the terminal cutting body 121 is pushed down. When the terminal cutting body 121 descends, the connecting portion 42 is sandwiched between the opening edge 121c of the slit 121b and the upper surface edge 112a (FIG. 6) of the second anvil 112B. In this terminal cutting mechanism 120, the opening edge 121c and the upper surface edge 112a act like a wrinkle and apply a shearing force to the connecting portion. When the terminal cutting body 121 is further pushed down, the opening edge 121 c and the upper surface edge 112 a cut the connecting portion 42, and the crimp terminal 20 is separated from the connecting piece 41. In order to improve cutting performance, the opening edge 121c is inclined with respect to the upper surface edge 112a on the sliding contact surface 121a.

  As illustrated in FIG. 6, the electric wire 10 to be crimped is disposed at a predetermined position between the terminal cut body 121 and the pressing member 122. Specifically, the electric wire 10 is placed on the upper surface 121 d of the terminal cut body 121. For this reason, at least one of the upper part of the terminal cutting body 121 and the lower part of the pressing member 122 is provided with a space for the electric wire 10 to escape so that the electric wire 10 is not crushed therebetween.

  Here, the predetermined position is a position where the end portion of the electric wire 10 before the crimping process is present above the bottom portion 24 of the flat wire connecting portion 22. Further, the predetermined position can be placed on the bottom 24 of the core wire crimping portion 22A so that the tip of the core wire 11 pushed down at the start of the crimping process does not protrude from the core wire crimping portion 22A. It is a position. The core wire 11 may extend in the axial direction along with the crimping process, and the tip position of the core wire 11 may move along the axial direction. Desirably, the predetermined position is determined in consideration of the elongation.

  On the other hand, the end of the electric wire 10 (the core wire 11 and the covering 12 at the tip) is pushed down to the inner wall surface side of the electric wire connecting portion 22 by the second mold 113. For this reason, if it is not held at all, the electric wire 10 is lifted from the upper surface 121d of the terminal cutting body 121, and the core wire 11 and the covering 12 at the tip end are crimped without being placed on the bottom portion 24 of the electric wire connecting portion 22. There is a fear. For this reason, in the terminal crimping apparatus 100 according to the embodiment, the electric wire 10 is held at a predetermined position with respect to the upper portion of the terminal cut body 121, and the positional deviation of the end of the electric wire 10 with respect to the electric wire connecting portion 22 during the crimping process. An electric wire holding mechanism is provided to suppress this.

  The electric wire holding mechanism includes an electric wire presser 118 that presses and holds the electric wire 10 placed on the upper surface 121d of the terminal cut body 121 as the electric wire placing portion toward the upper surface 121d (FIG. 6). The wire retainer 118 is disposed above the terminal cut body 121 and between the second mold 113 and the pressing member 122. Between the upper surface 121d of the terminal cut body 121 and the lower surface of the wire retainer 118, a space (hereinafter referred to as “wire holding space”) 118A that holds the covering 12 of the wire 10 is formed. The electric wire holding space 118 </ b> A suppresses the lifting of the electric wire 10 from the upper surface 121 d of the terminal cut body 121 in the crimping process, and suppresses the positional deviation of the core wire 11 at the tip and the covering 12 with respect to the electric wire connecting portion 22. The wire retainer 118 can move up and down with respect to the upper surface 121 d of the terminal cut body 121, and forms a wire holding space 118 </ b> A with the upper portion of the terminal cut body 121 by descending. For example, the wire retainer 118 is fixed to the ram 114A and moves up and down integrally with the ram 114A. The electric wire 10 is held in the electric wire holding space 118 </ b> A formed with the lowering of the electric wire presser 118.

  When the crimping of the core crimping portion 22A to the core wire 11 is performed by the terminal crimping device 100 configured as described above, the core crimping portion 22A is pressed against the core wire 11 with a high pressure. The core wire 11, the core wire crimping portion 22 </ b> A, and the water stop member 30 to which the pressing force is applied extend along the first direction L. In the crimping step, there is a possibility that the pressed core wire 11 extends and protrudes outside from the core wire crimping portion 22A, or the pressed water-stopping member 30 protrudes greatly from the core wire crimping portion 22A. As a result, the crimp terminal 20 may be deteriorated in sealing performance and electrical performance. Moreover, if the water stop member 30 protrudes too much from the core wire crimping part 22 </ b> A, the water stop member 30 may adhere to the second mold 113. As a result, there is a possibility that the sealing performance is deteriorated, or that the crimp terminal 20 is not smoothly taken out from the second mold 113.

As will be described below, the terminal crimping apparatus 100 according to the embodiment has a configuration capable of suppressing the protrusion of the core wire 11 and the water stop member 30 from the core wire crimping portion 22A. As shown in FIG. 9, in the 2nd metal mold | die 113 of embodiment, the 1st wall surface 115 and the 2nd wall surface 116 have the level | step-difference part STa. Stepped portion STa is recessed portion 113A _1. As shown in FIG. 10, the first wall 115 has a first front wall surface 115A ₁ and the first back wall 115A _2. The first front wall surface 115A ₁ is the cover 12 side of the core 11 is crimp target is a portion for crimping the distal end side of the opposite side. First back wall 115A ₂ is a portion for crimping the covering 12 side of the core 11 is crimp target. As shown in FIG. 11, the second wall surface 116 includes a second front wall surface 116 </ _b > A ₁ that faces the first front wall surface 115 </ _b > A ₁ in the second direction W, and a _first wall surface 116 </ _b > A ₂ that faces the first rear wall surface 115 </ _b > A ₂ in the second direction W. having a two-post wall 116A _2,. Second front wall 116A ₁ is the cover 12 side of the core 11 is crimp target is a portion for crimping the distal end side of the opposite side. Second back wall 116A ₂ is a portion for crimping the covering 12 side of the core 11 is crimp target. Stepped portion STa is formed on the first front wall surface 115A ₁ between the first back wall 115A _2, and the second front between the wall surface 116A ₁ and the pair second back wall 116A _2, two positions of . Stepped portion STa of the first wall surface 115A is protruding toward the core 11 is crimped object with respect to the first front wall 115A _1. Further, the stepped portion STa of the second wall surface 116A is protruding toward the core 11 side is a compression target for the second front wall 116A _1. In the second direction W, the shortest distance between the first front wall surface 115A ₁ and the second front wall surface 116A ₁ is wider than the shortest distance between the second back wall 115A ₂ and second rear wall 116A _2.

As shown in FIG. 9, the third wall surface 117 has a circular arc shape in a plan view (a shape viewed from the first direction L). The third wall surface 117 includes a third front wall surface 117A ₁ and a third rear wall surface 117A ₂ . The third front wall surface 117A ₁ is located between the first front wall surface 115A ₁ and the second front wall surface 116A ₁ in the second direction W. The third front wall surface 117A ₁ is a portion that crimps the tip side opposite to the coating 12 side of the core wire 11 to be crimped. Third after wall 117A _2, in the second direction W, a moiety with first back wall 115A ₂ located between the second back wall 116A _2, crimping the cover 12 side of the core 11 is crimped target .

In the embodiment, stepped portions STa are also formed at both ends of the third wall surface 117 in the second direction W. Each of the stepped portion STa, in a first direction L, is disposed between the third front wall surface 117A ₁ and the third post wall 117A _2. One stepped portion STa is formed continuously from the first wall surface 115, and the other stepped portion STa is formed continuously from the second wall surface 116. In the embodiment, the stepped portion STa is not formed in the central portion of the third wall surface 117 in the second direction W, and one stepped portion STa and the other stepped portion STa are separated in the second direction W. ing.

In the space surrounded by the first front wall surface 115A ₁ , the second front wall surface 116A ₁ , and the third front wall surface 117A ₁ , the first rear wall surface 115A ₂ , the second rear wall surface 116A ₂ , and the third rear wall surface 117A ₂ The width in the second direction W is wider than the enclosed space. In an embodiment, the first front wall surface 115A ₁ and the width between the second front wall surface 116A _1, the stepped portion STa of the width between the first back wall 115A ₂ and second rear wall 116A ₂ Spread one step. With this configuration, the cross-sectional area of the space surrounded by the first front wall surface 115A ₁ , the second front wall surface 116A ₁ , the third front wall surface 117A ₁ , and the first mold 112 is the first rear wall surface 115A ₂ , the second rear wall surface 115A ₁ , It is larger than the cross-sectional area of the space surrounded by the rear wall surface 116A ₂ , the third rear wall surface 117A ₂ , and the first mold 112. Here, the “cross-sectional area” is a cross-sectional area of a cross section orthogonal to the first direction L. The size relationship of the cross-sectional areas is a size relationship compared with the case where the position of the second mold 113 in the third direction H is the same.

  The first crimper 113A is formed, for example, so that the above-described cross-sectional area size relationship is established when the second mold 113 is at least at the bottom dead center. The bottom dead center is the lower end position of the range in which the second mold 113 moves up and down. When the second mold 113 is at the bottom dead center, the first mold 112 and the second mold 113 are closest to each other in the third direction H.

According to the second mold 113 of the present embodiment, the first front wall surface 115A ₁ , the second front wall surface 116A ₁ , and the third front wall surface when the core wire crimping portion 22A is crimped to the core wire 11 of the electric wire 10. the pressing force by 117A ₁ is first back wall 115A _2, lower than the pressing force by the second back wall 116A _2, and the third post wall 117A _2. In addition, the compression ratio at which the first front wall surface 115A ₁ , the second front wall surface 116A ₁ , and the third front wall surface 117A ₁ compress the core wire 11 is the first rear wall surface 115A ₂ , the second rear wall surface 116A ₂ , and the third rear wall surface 116A ₁ . The rear wall surface 117 </ _b > A ₂ is lower than the compression rate for compressing the core wire 11. Therefore, the protrusion of the core wire 11 from the core wire crimping portion 22A and the protrusion of the water stop member 30 are suppressed. In the present embodiment, the first front wall surface 115A ₁ , the second front wall surface 116A ₁ , and the third front wall surface 117A ₁ are provided in a range corresponding to the third water stop portion 33 in the first direction L. That is, in the concave portion 113A ₁ , the first front wall surface 115A ₁ , the second front wall surface 116A ₁ , and the third front wall surface 117A ₁ are arranged at positions where the third water stop portion 33 is compressed. With this arrangement, excessive protrusion of the water stop member 30, for example, such that it sticks to the second mold 113 is suitably suppressed.

In the present embodiment, the height from the concave surface 112A ₁ of the first die 112 to the third wall 117, the third front wall 117A ₁ over the third after wall 117A _2, becomes substantially constant height Yes. On the other hand, the first front wall surface 115A ₁ interval of the second direction W of the second front wall surface 116A _1, wider than the distance between the second direction W of the first back wall 115A ₂ and second rear wall 116A ₂ ing. For example, there is a restriction on the size of the third direction H (the height direction of the wire connecting portion 22) in the wire connecting portion 22 in relation to the cavity in which the terminal connecting portion 21 in the electric wire with terminal 1 according to the embodiment is accommodated. There may be some cases. Even in such a case, in the second mold 113 of the embodiment, in the second direction W, by widening the distance between the second direction W of the first front wall surface 115A ₁ and the second front wall surface 116A _1, cavity The core wire 11 and the water blocking member 30 can be prevented from protruding from the core wire crimping portion 22A while satisfying the shape corresponding to the housing space.

  12 to 19 show the terminal-attached electric wire 1 manufactured by the first mold 112 and the second mold 113 in the embodiment. As shown in FIG. 12, in the electric wire connection part 22, the core wire crimping part 22A has a wide part 22AW and a base end part 22AB. In the core wire crimping portion 22 </ b> A, the wide portion 22 </ b> AW is a portion located at the end opposite to the coated crimping portion 22 </ b> B side in the axial direction of the core wire 11 along the first direction L. The base end portion 22AB is a portion closer to the covering crimping portion 22B than the wide portion 22AW in the axial direction of the core wire 11 along the first direction L.

The wide portion 22AW is a portion that is crimped by the first front wall surface 115A ₁ , the second front wall surface 116A ₁ , and the third front wall surface 117A ₁ in the second mold 113. Further, the base end portion 22AB is a portion that is crimped by the first rear wall surface 115A ₂ , the second rear wall surface 116A ₂ , and the third rear wall surface 117A ₂ . The core wire crimping portion 22A, the shape of the concave portion 113A ₁ of the first crimper 113A is transferred. In other words, the shape of the core wire crimping portion 12A of the wire with terminals 1 has a shape corresponding to the shape of the concave portion 113A _1.

  As shown in FIG. 13, the wide portion 22 </ b> AW has side wall portions 22 </ b> WS at both ends in the second direction W. The side wall portion 22WS of the embodiment is formed along the third direction H. As shown in FIG. 12, the side wall 22WS has a flat surface orthogonal to the second direction W. The end of the side wall portion 22WS on the terminal connection portion 21 side is connected to the side wall 23a of the connecting portion 23. In the wide portion 22AW, the portion 22WU above the side wall portion 22WS (the portion opposite to the side of the bottom portion 24 with respect to the side wall portion 22WS) is formed in an arc shape when viewed from the first direction L.

  As shown in FIG. 13, the base end portion 22AB has side wall portions 22BS at both end portions in the second direction W. The side wall portion 22BS of the embodiment is formed along the third direction H. As shown in FIG. 14, in the embodiment, the height H2 of the side wall portion 22BS in the third direction H is lower than the height H1 of the side wall portion 22WS in the third direction H. As shown in FIG. 12, the base end portion 22BS has a flat surface orthogonal to the second direction W. In the base end portion 22AB, a portion 22BU above the side wall portion 22BS (a portion on the side opposite to the bottom portion 24 side with respect to the side wall portion 22BS) is formed in an arc shape when viewed from the first direction L.

  As shown in FIG. 13, the side wall portion 22WS of the wide portion 22AW protrudes in the width direction (second direction W) of the wire connecting portion 22 with respect to the side wall portion 22BS of the base end portion 22AB. In the embodiment, the side wall portions 22WS on both sides in the width direction of the electric wire connection portion 22 protrude to the same extent with respect to the side wall portion 22BS of the corresponding base end portion 22AB.

  As shown in FIG. 14, the core wire crimping portion 22A of the embodiment has a top portion FT that is linearly continuous from the wide portion 22AW to the base end portion 22AB on the upper surface portion in the third direction H. The top portion FT of the embodiment has substantially no step from the wide portion 22AW to the base end portion 22AB, and has a flat shape when viewed from the width direction (second direction W).

  As shown in FIG. 15, the core wire crimping portion 22 </ b> A has a recess 24 a in the bottom portion 24. The recess 24a is recessed toward the core wire 11, and is located at the bottom 24 of the base end 22AB. The concave portion 24a is a portion formed by the convex portion 112p formed on the first anvil 112A of the first mold 112 shown in FIG. The concave portion 24a is formed in a shape corresponding to the surface shape of the convex portion 112p by being pressed by the convex portion 112p. The recess 24a of the embodiment has a groove shape extending along the first direction L. When viewed from the third direction H, the shape of both ends of the recess 24a in the first direction L is a semicircular shape.

  As shown in FIGS. 13, 16, and 17, the width W <b> 1 of the wide portion 22 </ b> AW in the second direction W is wider than the width W <b> 2 of the base end portion 22 </ b> AB in the second direction W. Further, as shown in FIGS. 13, 16, and 18, in the embodiment, the width W <b> 1 of the wide portion 22 </ b> AW in the second direction W is narrower than the width W <b> 3 of the cover crimping portion 22 </ b> B in the second direction W. As shown in FIG. 13, in the embodiment, the width W <b> 1 of the wide portion 22 </ b> AW in the second direction W is narrower than the width W <b> 4 of the terminal connection portion 21 in the second direction W. Further, the width W4 of the terminal connection portion 21 in the second direction W is wider than the width W3 of the cover crimping portion 22B in the second direction W. In the electric wire with terminal 1 according to the embodiment, the interval between the one side wall 23a of the connecting portion 23 and the other side wall 23a of the connecting portion 23 in the second direction W is from the wire connecting portion 22 side to the terminal connecting portion 21 side. It gets wider as you go.

  As shown in FIG. 16, in the wide portion 22AW, the side wall portion 22WS of the wide portion 22AW is the tip position (tip 25a, tip) of the pair of barrel pieces 25, 26 in the height direction (third direction) of the wire connecting portion 22. 26a position) is located on the bottom 24 side. That is, in the wide portion 22AW, the tip ends 25a and 26a of the pair of barrel piece portions 25 and 26 in the height direction (third direction) of the wire connecting portion 22 are positioned above the side wall portion 22WS of the wide portion 22AW. Yes.

  Moreover, the 1st barrel piece part 25 and the 2nd barrel piece part 26 which are a pair of barrel piece parts have the overlapping part IM which mutually overlaps. In the wide portion 22AW, the side wall portion 22WS of the wide portion 22AW is located closer to the bottom 24 than the position of the overlapping portion IM in the height direction (third direction) of the wire connection portion 22. That is, in the wide portion 22AW, the position of the overlapping portion IM of the pair of barrel piece portions 25 and 26 in the height direction (third direction) of the wire connecting portion 22 is located above the side wall portion 22WS of the wide portion 22AW. ing.

  At this time, the stepped portion ST shown in FIG. 12 is closer to the bottom 24 than the tips 25a, 26a of the pair of barrel pieces 25, 26 in the wide portion 22AW in the height direction (third direction) of the wire connecting portion 22. May be located. Further, the stepped portion ST shown in FIG. 12 is located closer to the bottom 24 than the overlapping portion IM of the pair of barrel pieces 25 and 26 in the wide portion 22AW in the height direction (third direction) of the wire connecting portion 22. It may be. Moreover, as shown in FIG. 19, the water stop member 30 (second water stop portion 32) closes the opening at the tip of the wide portion 22AW.

  In the electric wire with terminal 1 according to the embodiment, the wide portion 22AW is formed wider in the second direction W than the base end portion 22WB. This shape is formed by absorbing the volume in the wide portion 22AW in the crimping process. Since the volume is absorbed by the wide portion 22AW, the amount of extension of the wire connecting portion 22 toward the terminal connecting portion 21 side is reduced. As a result, variations in the length dimension of the crimp terminal 20 are suppressed. Further, the terminal height (height in the third direction H) at the core wire crimping portion 22A is suppressed while increasing the volume of the wide portion 22AW in the second direction W (width direction), thereby restricting the terminal height. A certain cavity can be accommodated.

  As described above, the crimp terminal 20 according to the present embodiment has the core wire 11 and the coating 12 covering the core wire 11, and the electric wire 10 in which the tip portion 11E of the core wire 11 is exposed from the coating 12 and the core wire. 11 and a crimp terminal 20 having a wire connecting portion 22 that is wound around the sheath 12 and integrally covers the core wire 11 and the sheath 12, and the wire connecting portion 22 is crimped to the sheath 12. 22B and a core wire crimping portion 22A that is crimped to the core wire 11, and the core wire crimping portion 22A is a wide portion 22AW that is an end opposite to the coated crimping portion 22B side in the axial direction of the core wire 11. And a base end portion 22AB that is a portion closer to the cover crimping portion 22B than the wide width portion 22AW in the axial direction, and the side wall portion 22WS of the wide width portion 22AW is electrically connected to the side wall portion 22BS of the base end portion 22AB. It protrudes toward the width direction of the connection portion 22.

  In the present embodiment, the core wire crimping portion 22A includes a wide portion 22AW that is an end portion of the core wire 11 opposite to the coated crimping portion 22B side in the axial direction, and a portion closer to the coated crimping portion 22B than the wide portion 22AW in the axial direction. And a base end portion 22AB which is a portion. Side wall part 22WS of wide part 22AW protrudes toward the width direction (second direction W) of electric wire connection part 22 with respect to side wall part 22BS of base end part 22AB. According to the terminal-attached electric wire 1 of the present embodiment, the extension amount of the electric wire connecting portion 22 is reduced by having the wide portion 22AW. By reducing the variation in the length dimension due to the reduction in the amount of elongation of the electric wire connecting portion 22, a decrease in the performance of the terminal-attached electric wire 1 is suppressed.

  In the present embodiment, the wide portion 22AW is formed by crimping the crimp terminal 20 by the terminal crimping apparatus 100 of the present embodiment. By forming the wide portion 22AW, the amount of elongation of the wire connecting portion 22 during the crimping process is reduced. As a result, the length variation of the crimp terminal 20 is suppressed.

  Moreover, in the electric wire with terminal 1 according to the present embodiment, the electric wire connection portion 22 extends from the bottom portion 24 and both ends in the width direction (second direction W) of the bottom portion 24 and is wound around the electric wire 10. A pair of barrel pieces 25 and 26, and in the wide portion 22AW, the side wall portion 22WS of the wide portion 22AW is a pair of barrel pieces 25 in the height direction (third direction H) of the wire connecting portion 22. It is located on the bottom 24 side from the tip position of 26 (positions of the tips 25a and 26a).

  In the present embodiment, the distal ends 25a and 26a of the pair of barrel pieces 25 and 26 are located above the side wall 22WS of the wide portion 22AW in the third direction H. Therefore, in the second direction W, the overlapping portion IM of the pair of barrel piece portions 25 and 26 is not formed in the region overlapping the side wall portion 22WS of the wide portion 22AW. Therefore, the wide portion 22AW can efficiently absorb the expansion of the core wire 11 and the water stop member 30 in the first direction L as the volume increase in the second direction W.

  Moreover, the electric wire with terminal 1 according to the present embodiment further includes a water stop member 30 that closes the opening at the tip of the wide portion 22AW.

  Since the wide portion 22AW is formed in the electric wire connection portion 22 provided with the water stop member 30, the protrusion of the water stop member 30 from the electric wire connection portion 22 is suppressed.

[Modification of Embodiment]
A modification of the embodiment will be described. The modification of embodiment is related with the electric wire with a terminal. FIG. 20 is a perspective view of a terminal-attached electric wire according to a modification of the embodiment. FIG. 21 is a top view of a terminal-attached electric wire according to a modification of the embodiment.

  As shown in FIGS. 20 and 21, in the electric wire with terminal 1 according to the modification, unlike the electric wire with terminal 1 according to the above-described embodiment, the width W5 of the terminal connecting portion 21 in the second direction W is the second. It is narrower than the width W1 of the wide portion 22AW in the direction W. Also. In the electric wire with terminal 1 according to the modified example, the distance between the one side wall 23a of the connecting portion 23 and the other side wall 23a of the connecting portion 23 in the second direction W is from the wire connecting portion 22 side to the terminal connecting portion 21 side. It becomes narrower as it goes. In the electric wire with terminal 1 according to the modification, the width W5 of the terminal connection portion 21 in the second direction W is narrower than the width W2 of the base end portion 22AB in the second direction W. In addition, the other structure is the same as that of the electric wire 1 with a terminal which concerns on the above-mentioned embodiment.

  As shown in this modification, the configuration in which the wide portion 22AW is provided in the electric wire with terminal 1 is a case where the width of the terminal connection portion 21 in the second direction W is narrower than the width W1 of the wide portion 22AW in the second direction W. Even can be applied.

  The contents disclosed in the above embodiments and modifications can be executed in appropriate combination.

DESCRIPTION OF SYMBOLS 1 Electric wire with a terminal 10 Electric wire 11 Core wire 11E, 12E Tip part 12 Coating | cover 20 Crimp terminal 21 Terminal connection part 21a, 23a Side wall 22 Electric wire connection part 22A Core wire connection part 22AW Wide part 22AB Base end part 22B Covering crimp part 22C Connection crimping part 22WS , 22BS side wall part 23 connecting part 24 bottom part 24a concave part 25 first barrel piece part 25a, 26a tip 26 second barrel piece part 27 serration region 27a concave part 30 water stop member 31 first water stop part 32 second water stop part 33 first Three water stop parts 40 Terminal chain 41 Connection piece 41a Hole 42 Connection part STa Step part W1-W5 Width

Claims (3)

An electric wire having a core wire and a coating covering the core wire, wherein a tip portion of the core wire is exposed from the coating;
A crimp terminal having an electric wire connecting portion wound around the core wire and the covering and integrally covering the core wire and the covering;
With
The wire connecting portion has a coating crimping portion that is crimped to the coating, and a core wire crimping portion that is crimped to the core wire,
The core wire crimping portion is a wide portion that is an end portion on the opposite side to the coated crimping portion side in the axial direction of the core wire, and a proximal end that is a portion closer to the coated crimping portion side than the wide portion in the axial direction And
The side wall portion of the wide portion protrudes in the width direction of the wire connection portion with respect to the side wall portion of the base end portion. The wire connection portion includes a bottom portion and a pair of barrel pieces that extend from both ends in the width direction of the bottom portion and are wound around the wire,
The electric wire with a terminal according to claim 1, wherein, in the wide portion, the side wall portion of the wide portion is located on the bottom side with respect to the tip positions of the pair of barrel pieces in the height direction of the electric wire connecting portion. Furthermore, the electric wire with a terminal of Claim 1 or 2 provided with the water stop member which obstruct | occluded the opening part of the front-end | tip of the said wide part.

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