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WO2024214747A1 - Borne de sertissage équipée d'un fil électrique et procédé de fabrication de borne de sertissage à fil électrique - Google Patents

Borne de sertissage équipée d'un fil électrique et procédé de fabrication de borne de sertissage à fil électrique Download PDF

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Publication number
WO2024214747A1
WO2024214747A1 PCT/JP2024/014569 JP2024014569W WO2024214747A1 WO 2024214747 A1 WO2024214747 A1 WO 2024214747A1 JP 2024014569 W JP2024014569 W JP 2024014569W WO 2024214747 A1 WO2024214747 A1 WO 2024214747A1
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WO
WIPO (PCT)
Prior art keywords
core wire
crimping
crimp terminal
bottom plate
electric wire
Prior art date
Application number
PCT/JP2024/014569
Other languages
English (en)
Japanese (ja)
Inventor
亮 黒石
泰 渥美
匡 藤木
憲昭 蔵城
賢次 宮本
静之 小野
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2024214747A1 publication Critical patent/WO2024214747A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes

Definitions

  • This disclosure relates to a crimp terminal with electric wire and a method for manufacturing the crimp terminal with electric wire.
  • a crimp terminal with a wire has been widely adopted, in which a pair of crimping pieces formed on the core wire crimping portion of the crimp terminal are crimped and crimped to a core wire consisting of multiple strands exposed at the end of the wire from which the insulating coating has been stripped, thereby connecting the crimp terminal to the wire.
  • aluminum wires have been used in place of copper wires as wires used in automotive wire harnesses due to their light weight and recyclability. In the case of aluminum wires, a strong oxide coating with high electrical resistance is present on the surface of each strand, which leads to a decrease in electrical performance when connecting terminals.
  • Patent Document 1 proposes ultrasonically connecting the core wire exposed at the end of the aluminum wire before crimping and crimping. According to this, the strands from which the coating such as the oxide film formed on the surface of each strand has been stripped come into contact with each other and are electrically connected, thereby reducing the electrical resistance between the wire and the terminal.
  • Patent Document 1 it is necessary to carry out pre-processing by ultrasonically connecting the core wire exposed at the end of the aluminum electric wire, and then to crimp the core wire with a pair of crimping parts of the core wire crimping part, which inevitably lengthens the manufacturing process and increases manufacturing costs.
  • the objective of the present invention is to provide a crimp terminal with electric wire that can remove the oxide film adhering to the core wire at low cost and enables a stable electrical connection between the crimp terminal and the core wire, and a method for manufacturing the crimp terminal with electric wire.
  • the crimp terminal with electric wire of the present disclosure comprises an electric wire having an internal core wire exposed from an insulating coating at the end, and a crimp terminal having a core wire crimping portion to which the core wire of the electric wire is crimped, the core wire crimping portion of the crimp terminal having a bottom plate portion on which the core wire is placed and a pair of crimping pieces protruding from both sides of the bottom plate portion and crimped to the core wire on the bottom plate portion, the core wire crimping portion having an extrusion protrusion formed by extruding a part of at least one of the bottom plate portion and the crimping pieces toward the core wire in a middle region excluding both side portions in the extension direction of the core wire.
  • the manufacturing method of the crimp terminal with electric wire disclosed herein includes preparing an electric wire having an internal core wire exposed from an insulating coating at the terminal, and a crimp terminal having a core wire crimping portion to which the core wire of the electric wire is crimped, the core wire crimping portion having a bottom plate portion on which the core wire is placed and a pair of crimping pieces protruding from both sides of the bottom plate portion, the core wire of the electric wire is placed on the bottom plate portion, and the pair of crimping pieces are crimped and crimped to the core wire on the bottom plate portion, and after the crimping and crimping, a part of at least one of the bottom plate portion and the crimping pieces is pushed toward the core wire in an intermediate region excluding both side portions in the extension direction of the core wire to form an extrusion protrusion.
  • the present disclosure provides a crimp terminal with electric wire and a method for manufacturing the crimp terminal with electric wire that can remove the oxide film attached to the core wire at low cost and enable a stable electrical connection between the crimp terminal and the core wire.
  • FIG. 1 is an exploded perspective view showing a state before crimping of an electric wire and a crimp terminal constituting an electric wire-attached crimp terminal according to a first embodiment.
  • FIG. FIG. 2 is a plan perspective view of the crimp terminal with electric wire according to the first embodiment, which is formed by crimping the electric wire and the crimp terminal shown in FIG.
  • FIG. 3 is a bottom perspective view of the crimp terminal with electric wire shown in FIG. 2 .
  • 4 is a vertical cross-sectional view of the crimp terminal with electric wire shown in FIG. 2, which corresponds to the cross section taken along line IV-IV in FIG.
  • FIG. 5 is a cross-sectional view corresponding to the VV section of FIG.
  • FIG. 6 is a planar perspective view of the crimp terminal with electric wire according to the second embodiment.
  • FIG. 7 is a cross-sectional view of the crimp terminal with electric wire shown in FIG. 6, and corresponds to FIG.
  • the crimp terminal with electric wire of the present disclosure comprises: (1) An electric wire having an internal core wire exposed from an insulating coating at an end thereof, and a crimp terminal having a core wire crimping portion to which the core wire of the electric wire is crimped, wherein the core wire crimping portion of the crimp terminal has a bottom plate portion on which the core wire is placed and a pair of crimping pieces protruding from both sides of the bottom plate portion and crimped to the core wire on the bottom plate portion, and the core wire crimping portion has an extrusion protrusion formed by extruding a portion of at least one of the bottom plate portion and the crimping pieces toward the core wire in an intermediate region excluding both side portions in the extension direction of the core wire.
  • the core wire crimping portion of the crimp terminal to which the core wire is crimped has an extrusion protrusion formed by extruding a part of at least one of the bottom plate portion and the crimping piece toward the core wire in the middle region excluding both sides in the extension direction of the core wire.
  • the wires are electrically connected by contacting each other, and the electrical resistance between the wire and the terminal can be reduced.
  • the oxide film attached to the core wire can be removed at low cost, and a crimp terminal with electric wire that enables a stable electrical connection between the crimp terminal and the core wire can be provided.
  • the extrusion protrusion is provided in the middle region excluding both side portions in the extension direction of the core wire in the core wire crimping portion, the extrusion protrusion can be provided without both side portions where a bell mouth is likely to occur in the process of crimping the core wire with a pair of crimping pieces.
  • This can prevent a malfunction in which the compressive force by the extrusion protrusion is released at the bell mouth forming portion and the core wires cannot be sufficiently tightly attached to each other, and the extrusion protrusion can stably achieve partial high adhesion between the strands of wires, thereby reliably reducing the electrical resistance between the wire and the terminal. This can suppress an increase in resistance due to the thermal effect in the vehicle.
  • the extrusion protrusion only needs to be provided on a portion of the bottom plate of the core wire crimping portion and at least one of the pair of crimping pieces, and may be provided only on the bottom plate, only on one or both crimping pieces, or on both the bottom plate and the crimping pieces.
  • the extrusion protrusion is disposed in the center of the intermediate region in the extension direction. Since the extrusion protrusion is provided in the center of the intermediate region of the core wire crimping portion in the extension direction of the core wire, it is possible to advantageously prevent the compression force exerted by the extrusion protrusion toward the inside of the core wire crimping portion from escaping to the outside of the core wire crimping portion due to the extension of the core wire, etc. As a result, it is possible to advantageously and stably secure the region where the extrusion protrusion realizes high density between the wires, and it is possible to more advantageously enable a stable electrical connection between the crimp terminal and the core wire.
  • the extrusion protrusion is provided in the intermediate region of the bottom plate portion, and the protruding end face of the extrusion protrusion is arranged to face the tip portions of the pair of crimping pieces inserted inside the core wire in the extrusion direction of the extrusion protrusion.
  • the core wire can be reliably compressed between the extrusion protrusion and the crimping piece.
  • the protruding end face of the extrusion protrusion is arranged to face the tip portions of the pair of crimping pieces inserted inside the core wire.
  • the extrusion protrusion is provided in the intermediate region on the base end side of each of the crimping pieces, and the protruding end face of the extrusion protrusion is arranged to face the tip portion of each of the crimping pieces inserted inside the core wire in the extrusion direction of the extrusion protrusion.
  • the core wire can be reliably compressed between a pair of extrusion protrusions facing each other in the extrusion direction.
  • the protruding end face of each extrusion protrusion is arranged to face the tip portion of each crimping piece inserted inside the core wire.
  • the compression rate of the core wire sandwiched between the extrusion protrusion and the crimping piece can be improved, and a stable electrical connection between the crimp terminal and the core wire due to the high density between the wires by the extrusion protrusion can be more advantageously achieved.
  • by providing an extrusion protrusion on the base end of each of the pair of crimping pieces and clamping the core wire between the respective tip ends it becomes easier to achieve an even compression state between the strands that make up the core wire on the left and right, which makes it possible to more effectively suppress the increase in resistance due to thermal effects in the vehicle compared to when the compression state is uneven.
  • the protruding dimension of the extrusion protrusion from the bottom plate portion or the inner surface of the crimping piece is greater than the depth dimension of the serration from the inner surface. This is because by making the protruding dimension of the extrusion protrusion larger than the depth dimension of the serration that provides resistance to pulling out of the core wire from the core wire crimping portion, the extrusion protrusion can more reliably achieve the effect of improving the adhesion between the strands. More preferably, it is desirable that the protruding dimension of the extrusion protrusion is at least twice the depth dimension of the serration, and even more preferably at least three times.
  • the method for producing a crimp terminal with electric wire includes: (6) A crimp terminal is prepared having an electric wire whose internal core wire is exposed from an insulating coating at a terminal, and a core wire crimping portion to which the core wire of the electric wire is crimped, the core wire crimping portion having a bottom plate portion on which the core wire is placed and a pair of crimping pieces protruding from both sides of the bottom plate portion, the core wire of the electric wire is placed on the bottom plate portion, and the pair of crimping pieces are crimped and crimped to the core wire on the bottom plate portion, and after the crimping and crimping, a portion of at least one of the bottom plate portion and the crimping pieces is pushed toward the core wire in an intermediate region excluding both side portions in the extension direction of the core wire to form an extrusion protrusion.
  • the core wire of the electric wire is placed on the bottom plate of the crimp terminal, and the pair of crimping pieces is crimped toward the bottom plate with the core wire on the bottom plate sandwiched therebetween, and then a part of at least one of the bottom plate and the crimping pieces is pushed toward the core wire in the middle region excluding both sides in the extension direction of the core wire to form an extrusion protrusion.
  • This improves the adhesion between the wires at the part where the extrusion protrusion is pushed toward the core wire in the core wire crimped and placed in the core wire crimping part.
  • the oxide coating between the wires is partially removed and the wires are electrically connected by contacting each other, and the electrical resistance between the electric wire and the terminal can be reduced. Since it is only necessary to extrude a part of the core wire crimping part inward to form the extrusion protrusion after the core wire is crimped, the oxide coating attached to the core wire can be removed at low cost, and a crimp terminal with electric wire that enables a stable electrical connection between the crimp terminal and the core wire can be provided.
  • the extrusion protrusion is provided in the middle region of the core wire crimping portion excluding both side portions in the direction in which the core wire extends, the extrusion protrusion can be provided excluding both side portions where a bell mouth is likely to form in the process of crimping the core wire using a pair of crimping pieces. This allows the press process of forming the extrusion protrusion to be performed regardless of whether a bell mouth is present or not, resulting in excellent workability.
  • the crimp terminal with electric wire 10 includes an electric wire 16 having an inner core wire 12 exposed from an insulating coating 14 at a terminal thereof, and a crimp terminal 20 having a core wire crimping portion 18 to which the core wire 12 of the electric wire 16 is crimped.
  • the electric wire 16 has a core wire 12 as a conductor formed by twisting together a plurality of wires made of aluminum or an aluminum alloy, and the outer periphery of this core wire 12 is covered with an insulating coating 14 made of an insulating material. That is, at the end of the electric wire 16, a predetermined length of the insulating coating 14 is removed to expose the core wire 12.
  • a crimp terminal 20 to be crimped and connected to this electric wire 16 is adapted to be crimped to the core wire 12 exposed at the end of the electric wire 16.
  • the crimp terminal 20 is formed by pressing a flat metal plate into a predetermined shape.
  • a metal having low electrical resistance such as copper or a copper alloy can be appropriately selected.
  • the crimp terminal 20 is preferably plated with tin or nickel.
  • the crimp terminal 20 has a connection portion 22 at one end (front end) in the longitudinal direction, and a core wire crimping portion 18 at the other end (rear end) in the longitudinal direction.
  • the connection portion 22 has a circular flat plate shape, and a bolt insertion hole 24 is formed in the center.
  • the crimp terminal 20 is electrically connected to the device by fastening the connection portion 22 to a connection terminal connected to a device not shown.
  • the core wire crimping portion 18 has a cylindrical shape that opens in the front-rear direction, and the core wire 12 exposed at the end of the electric wire 16 is crimped to the core wire crimping portion 18. In this way, the crimp terminal 20 and the electric wire 16 are electrically connected to each other, forming the electric wire crimp terminal 10 shown in FIG. 2.
  • the core wire crimping portion 18 of the crimp terminal 20 has a bottom plate portion 26 on which the core wire 12 of the electric wire 16 is placed, and a pair of crimping pieces 28, 28 that are connected to both sides of the bottom plate portion 26, protrude from both sides, and are crimped to the core wire 12.
  • a plurality of groove-shaped serrations 32 are provided on an inner surface 30 located between the pair of crimping pieces 28, 28 of the bottom plate portion 26.
  • the core wire 12 enters the serrations 32 to improve conductivity and provide resistance to pulling the core wire 12 out of the core wire crimping portion 18.
  • the crimp terminal with electric wire 10 is configured in a state in which the core wire 12 exposed at the end of the electric wire 16 is crimped to the core wire crimping portion 18 of the crimp terminal 20 in a crimping step in a manufacturing method described below, thereby connecting the electric wire 16 and the crimp terminal 20.
  • the crimp terminal with electric wire 10 further has an extrusion protrusion 34 formed by extruding a part of the bottom plate portion 26 toward the core wire 12 in an intermediate region ⁇ excluding both side portions of the core wire crimping portion 18 in the extending direction of the core wire 12 (left and right direction in Fig. 4).
  • the extrusion protrusion 34 is located within the intermediate region ⁇ of the bottom plate portion 26 of the core wire crimping portion 18, and further in the central portion of the intermediate region ⁇ (see Fig. 4).
  • Such an extrusion protrusion 34 can be formed by press-extruding or stamping a predetermined position of the bottom plate portion 26 from the outside to the inside, i.e., toward the core wire 12, in a press process described later with respect to the core wire crimping portion 18 of the crimp terminal 20 after the crimping process in which the electric wire 16 is crimped.
  • extrusion protrusion 34 in the intermediate region ⁇ of the bottom plate portion 26, it is possible to advantageously avoid a problem in the press process after the crimping process in the manufacturing method described later, in which it becomes difficult to hold the core wire crimping portion 18 with a die in the press process due to the influence of a bell mouth (not shown) that is likely to be provided on both sides of the core wire crimping portion 18 in the crimping process.
  • An open recess 35 is formed in the outer surface 33 of the bottom plate portion 26 in association with the formation of the extrusion protrusion 34.
  • the protrusion dimension L1 of the extrusion protrusion 34 from the inner surface 30 of the bottom plate portion 26 is larger than the depth dimension L2 of the serration 32 from the inner surface 30 of the bottom plate portion 26, and is preferably set to be at least two times, more preferably at least three times, and in this embodiment is set to be at least three times.
  • the extrusion protrusion 34 is provided at approximately the center of the width direction of the bottom plate portion 26 (the left-right direction in FIG. 5 perpendicular to the extension direction of the core wire 12), and the protruding end face 36 of the extrusion protrusion 34 is disposed in the extrusion direction of the extrusion protrusion 34 (upward direction in FIG. 5) facing the tip ends 38, 38 of the pair of crimping pieces 28, 28 inserted inside the core wire 12 by the crimping process. This ensures that the core wire 12 is compressed between the extrusion protrusion 34 and the crimping piece 28.
  • the compression ratio of the core wire 12 sandwiched between the protruding end face 36 of the extrusion protrusion 34 and the tip ends 38, 38 of the pair of crimping pieces 28, 28 is improved.
  • the protruding end face 36 spreads on a plane in a direction perpendicular to the facing direction of the tip ends 38, 38 of the pair of crimping pieces, and a compressive force can be applied to the core wire 12 over a wider range.
  • the electric wire 16 shown in FIG. 1 is prepared by stripping the insulating coating 14 at the end of the electric wire 16 to expose the internal core wire 12.
  • a metal flat plate is pressed and bent to prepare the crimp terminal 20 shown in FIG. 1.
  • the core wire 12 of the electric wire 16 is placed on the bottom plate 26 of the core wire crimping portion 18 of the crimp terminal 20.
  • a crimping process is carried out in which the pair of crimping pieces 28, 28 of the core wire crimping portion 18 are crimped and crimped to the core wire 12 on the bottom plate 26.
  • the core wire crimping portion 18 of the crimp terminal 20 with the core wire 12 of the electric wire 16 placed on the bottom plate portion 26 is placed on a lower die for crimping (not shown), and an upper die for crimping (not shown) is placed on top and pressed, so that the pair of crimping pieces 28, 28 are crimped toward the core wire 12 placed on the bottom plate portion 26.
  • the crimped electric wire 16 and crimp terminal 20 that are connected to each other and obtained in this crimping process are turned upside down.
  • the core wire crimping portion 18 of the crimp terminal 20 to which the core wire 12 is crimped is provided with an extrusion protrusion 34 formed by pushing a portion of the bottom plate portion 26 toward the core wire 12 in the middle region ⁇ excluding both side portions in the extension direction of the core wire 12. Therefore, the adhesion between the wires constituting the core wire 12 can be improved in the portion formed by pushing the extrusion protrusion 34 toward the core wire 12. This high adhesion between the wires allows the oxide film between the wires to be partially removed, and the wires are electrically connected by contacting each other, reducing the electrical resistance between the electric wire 16 and the crimp terminal 20.
  • the oxide film adhering to the core wire can be removed at low cost, and it is possible to provide a wire-attached crimp terminal 10 that enables a stable electrical connection between the crimp terminal 20 and the core wire 12.
  • the extrusion protrusion 34 is located within the intermediate region ⁇ of the bottom plate portion 26 of the core wire crimping portion 18, and is further disposed in the center of the intermediate region ⁇ (see FIG. 3). This advantageously prevents the inward compressive force of the core wire crimping portion 18 caused by the extrusion protrusion 34 from escaping to the outside of the core wire crimping portion 18 due to elongation of the core wire 12, etc. Therefore, the extrusion protrusion 34 advantageously and stably achieves high density between the wires, and more advantageously ensures a stable electrical connection between the crimp terminal and the core wire.
  • the protruding end face 36 of the extrusion protrusion 34 is disposed in the extrusion direction of the extrusion protrusion 34 (upward in Figure 5) facing the tip ends 38, 38 of the pair of crimping pieces 28, 28 inserted inside the core wire 12 by the crimping process.
  • This reliably improves the compression ratio of the core wire 12 sandwiched between the protruding end face 36 of the extrusion protrusion 34 and the tip ends 38, 38 of the pair of crimping pieces 28, 28, and advantageously achieves high density between the strands of wire between the extrusion protrusion 34 and the crimping piece 28.
  • the extrusion protrusion 34 is formed by pushing out a part of the bottom plate 26 of the core wire crimping portion 18 toward the core wire 12, so there is no need to cut out or provide holes in the bottom plate 26 or the crimping piece 28. This prevents the core wire 12 from deforming toward the cutouts or holes, which could cause the compression force applied between the strands by the extrusion protrusion 34 to escape.
  • the protrusion dimension L1 of the extrusion protrusion 34 from the inner surface 30 of the bottom plate portion 26 is set to be greater than the depth dimension L2 of the serration 32 from the inner surface 30, so that the extrusion protrusion 34 can more reliably improve the adhesion between the wires.
  • the crimp terminal with electric wire 40 according to the second embodiment differs from the crimp terminal with electric wire 10 according to the first embodiment in the location where a push-out protrusion 42, which will be described later, is formed.
  • differences between the crimp terminal with electric wire 40 according to the second embodiment and the crimp terminal with electric wire 10 according to the first embodiment will be described, and detailed description of the same members or parts as those according to the first embodiment will be omitted by assigning the same reference numerals in the drawings as those in the first embodiment.
  • the crimp terminal with electric wire 40 has extrusion protrusions 42 formed by extruding a part of each crimping piece 28 toward the core wire 12 in an intermediate region ⁇ excluding both side portions of the core wire crimping portion 18 in the extending direction of the core wire 12 (left and right direction in Fig. 6).
  • the extrusion protrusions 42 are arranged in the intermediate region ⁇ of the base end sides 44, 44 of the crimping pieces 28, 28 arranged opposite to each other on both sides in the width direction of the core wire crimping portion 18, and further in the central portion of the intermediate region ⁇ (see Fig. 6).
  • the core wire crimping portion 18 of the crimp terminal 20 is placed on a lower press die (not shown) in a state in which the crimping pieces 28 of the core wire crimping portion 18 are oriented so as to be arranged upward, and an upper press die (having a protrusion for forming the extrusion protrusions 42) (not shown) is placed on top to perform pressing.
  • an upper press die having a protrusion for forming the extrusion protrusions 42
  • recesses 48 that open onto the outer surfaces 46 of the respective crimping pieces 28 are provided.
  • the protruding end surface 50 of the extrusion protrusion 42 provided on the base end side 44 of each crimping piece 28 in the extrusion direction spreads flatly in a direction perpendicular to the protruding direction, and is disposed opposite the tip end 38 of each crimping piece 28 inserted inside the core wire 12.
  • serrations 32 as in the first embodiment may be provided at appropriate positions on the inner surface 30 of the bottom plate portion 26 and the inner surface 52 of each crimping piece 28.
  • the protruding dimension L1 of the extrusion protrusion 42 from the inner surface 52 of the crimping piece 28 is made larger than the depth dimension L2 of the serrations 32 from the inner surface 30 of the bottom plate portion 26 and the inner surface 52 of the crimping piece 28, preferably two or more times, more preferably three or more times. Even if serrations are not provided, it is preferable that the protruding dimension L1 of the extrusion protrusion 42 is larger than the depth dimension of a general serration.
  • the compression ratio of the core wire 12 sandwiched between the extrusion protrusion 42 and the crimping piece 28 can be improved, and a stable electrical connection between the crimp terminal 20 and the core wire 12 can be more advantageously achieved by increasing the density between the strands by the extrusion protrusion 42.
  • the extrusion protrusion 42 is provided on the base end side 44 of each of the pair of crimping pieces 28 and the core wire 12 can be sandwiched between the respective tip portions 38, it is easy to achieve an even compression state between the strands constituting the core wire 12 on the left and right, and the increase in resistance due to the thermal effect in the vehicle can be more advantageously suppressed compared to the case where the compression state is uneven.
  • the extrusion protrusion 42 is located in the middle region ⁇ and is positioned in its central portion, which prevents the compression force from escaping.
  • the extrusion protrusion 42 is also formed without a notch or hole, which prevents the compression force from escaping, similar to the first embodiment.
  • the extrusion protrusion 34 is extruded at one location on the bottom plate portion 26, but multiple extrusion protrusions 34 may be provided at multiple locations on the bottom plate portion 26.
  • one extrusion protrusion 42 is provided on each crimping piece 28, but multiple extrusion protrusions 34 may be provided on each crimping piece 28, or one or multiple extrusion protrusions 42 may be provided on only one of the crimping pieces 28.
  • the extrusion protrusions 34, 42 are provided on either the bottom plate portion 26 or the crimping piece 28, but they may be provided on both.
  • the serrations 32 are groove-shaped extending in a direction intersecting the extension direction of the core wire 12, but the shape and arrangement of the serrations 32 are not limited to this. For example, they may be concave, and do not need to extend in a groove-like shape, but may be formed of circular or polygonal recesses arranged in a dot pattern. Furthermore, the serrations may be formed on the inner surface of the crimping piece instead of or in addition to the bottom plate portion.
  • Crimp terminal with electric wire (embodiment 1) 12 Core wire 14 Insulating coating 16 Electric wire 18 Core wire crimping portion 20 Crimp terminal 22 Connection portion 24 Bolt insertion hole 26 Bottom plate portion 28 Crimping piece 30 Inner surface (bottom plate portion) 32 Serration 33 External surface (bottom plate) 34: Extrusion protrusion 35: Recessed portion 36: Protruding end surface 38: Tip portion (crimping piece) 40 Crimp terminal with electric wire (embodiment 2) 42: Extrusion protrusion 44: Base end side 46: Outer surface (crimping piece) 48: recessed portion 50: protruding end surface 52: inner surface (crimping piece) ⁇ Intermediate region L1 Projection dimension of extrusion protrusion L2 Depth dimension of serration

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

Est prévue une borne de sertissage équipée d'un fil électrique avec laquelle un film d'oxyde adhérant à un fil d'âme peut être retiré à un faible coût, et qui permet une connexion électrique stable de la borne de sertissage et du fil d'âme.　Une borne de sertissage équipée d'un fil électrique (10) comprend : un fil électrique (16) dans lequel un fil d'âme interne (12) est exposé à partir d'un revêtement d'isolation (14) au niveau d'une borne ; et une borne de sertissage (20) comportant une partie de sertissage de fil d'âme (18) sur laquelle le fil d'âme (12) du fil électrique (16) est serti. La partie de sertissage de fil d'âme (18) de la borne de sertissage (20) est pourvue d'une partie plaque de fond (26) sur laquelle le fil d'âme (12) est placé, et d'une paire de pièces de sertissage (28, 28) faisant saillie à partir des deux côtés de la partie de plaque de fond (26) et serties sur le fil d'âme (12) sur la partie plaque de fond (26). La partie de sertissage de fil d'âme (18) présente une saillie d'extrusion (34) formée par extrusion d'une partie de la partie plaque de fond (26) et/ou de la pièce de sertissage (28) vers le fil d'âme (12) dans une région intermédiaire (α) excluant les deux parties latérales dans la direction d'extension du fil d'âme (12).
PCT/JP2024/014569 2023-04-12 2024-04-10 Borne de sertissage équipée d'un fil électrique et procédé de fabrication de borne de sertissage à fil électrique WO2024214747A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023064900A JP2024151515A (ja) 2023-04-12 2023-04-12 電線付き圧着端子および電線付き圧着端子の製造方法
JP2023-064900 2023-04-12

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WO2024214747A1 true WO2024214747A1 (fr) 2024-10-17

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892459A (en) * 1974-06-21 1975-07-01 Amp Inc Open barrel terminal and method for terminating an electrical wire therein
JPS55120079U (fr) * 1979-02-16 1980-08-25
JPH08222343A (ja) * 1995-02-17 1996-08-30 Yazaki Corp 端子圧着装置及び端子圧着方法
JP2010073348A (ja) * 2008-09-16 2010-04-02 Sumitomo Wiring Syst Ltd 端子金具及び端子金具付き電線
JP2010103012A (ja) * 2008-10-24 2010-05-06 Yazaki Corp アルミ電線用圧着端子及びアルミ電線用圧着端子の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892459A (en) * 1974-06-21 1975-07-01 Amp Inc Open barrel terminal and method for terminating an electrical wire therein
JPS55120079U (fr) * 1979-02-16 1980-08-25
JPH08222343A (ja) * 1995-02-17 1996-08-30 Yazaki Corp 端子圧着装置及び端子圧着方法
JP2010073348A (ja) * 2008-09-16 2010-04-02 Sumitomo Wiring Syst Ltd 端子金具及び端子金具付き電線
JP2010103012A (ja) * 2008-10-24 2010-05-06 Yazaki Corp アルミ電線用圧着端子及びアルミ電線用圧着端子の製造方法

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