WO2017073026A1 - Crimp terminal and electric wire provided with terminal - Google Patents

Crimp terminal and electric wire provided with terminal Download PDF

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Publication number
WO2017073026A1
WO2017073026A1 PCT/JP2016/004558 JP2016004558W WO2017073026A1 WO 2017073026 A1 WO2017073026 A1 WO 2017073026A1 JP 2016004558 W JP2016004558 W JP 2016004558W WO 2017073026 A1 WO2017073026 A1 WO 2017073026A1
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WO
WIPO (PCT)
Prior art keywords
electric wire
covering
terminal
crimp terminal
connection
Prior art date
Application number
PCT/JP2016/004558
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French (fr)
Japanese (ja)
Inventor
正典 奥野
渡辺　猛
勝則 岳田
小林　浩
大泰 多賀
基也 原
章吾 冨田
Original Assignee
古河電気工業株式会社
古河As株式会社
トヨタ自動車株式会社
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Application filed by 古河電気工業株式会社, 古河As株式会社, トヨタ自動車株式会社 filed Critical 古河電気工業株式会社
Publication of WO2017073026A1 publication Critical patent/WO2017073026A1/en

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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

Definitions

  • the present invention mainly relates to a crimp terminal that is electrically connected to an electric wire by crimping.
  • the wire harness is routed in the body of an automobile, and is used for power supply to various electric devices included in the automobile, communication of control signals between the electric devices, and the like.
  • a wire harness is comprised from the several electric wire bundled and the terminal connected to these electric wires.
  • Patent document 1 discloses this kind of electric wire with a terminal.
  • the crimp terminal of Patent Document 1 is used in a wet area and requires waterproof performance.
  • This crimp terminal is a closed barrel terminal provided with a cylindrical wire connecting portion.
  • the crimp terminal and the electric wire are connected by inserting the electric wire into the cylindrical electric wire connecting portion and compressing the electric wire connecting portion.
  • an electric wire connection part is a cylinder, it can prevent that water penetrate
  • a conduction pressing portion and a waterproof compression portion are formed inside the wire connection portion.
  • the conduction pressing portion is a rectangular recess, and the conductor of the wire is strongly pressed by the edge of the recess to ensure conduction between the wire and the terminal.
  • the waterproof compression part is an arcuate protrusion, and the waterproof performance is improved by compressing the coating of the electric wire with the protrusion.
  • the crimp terminal of Patent Document 2 includes a wire barrel and an insulation barrel.
  • the wire barrel is formed by bending a plate material into a substantially U shape, and is connected to the conductor by arranging and caulking the conductor of the electric wire therebetween.
  • the insulation barrel is formed by bending a plate material into a substantially U shape, and is connected to the coating by arranging and crimping the wire coating therebetween.
  • the crimp terminal as in Patent Document 2 is called an open barrel terminal. Unlike the closed barrel terminal of Patent Document 1, the open barrel terminal is not hermetically sealed at the connection between the electric wire and the terminal.
  • Patent Document 3 discloses an open barrel terminal including a wire barrel and an insulation barrel (crimp arm). Two notches are formed inside the insulation barrel along the longitudinal direction of the terminal. Further, a notch extending so as to form a right angle with the notch is formed between the two notches.
  • Patent Document 4 discloses an open barrel terminal including a wire barrel (conductor crimping portion) and an insulation barrel (coating crimping portion). On the inner side of the insulation barrel, serrations (concave portions) are formed in a direction perpendicular to the longitudinal direction of the electric wires. Patent Document 4 describes that by forming serrations, the penetration of moisture can be prevented by encroaching the serrations into the wire coating during caulking to improve adhesion. Moreover, it describes that a protruding line may be provided instead of serration.
  • JP 2014-164899 A JP 2009-245701 A Japanese Patent Laid-Open No. 10-31844 JP2011-216253A
  • Patent Documents 3 and 4 it is described that adhesion is improved by forming serrations or the like in the insulation barrel. However, Patent Documents 3 and 4 do not describe a specific shape such as serration.
  • the present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a configuration in which a wire is unlikely to come off from a terminal even when a tensile force is applied to the wire in a crimp terminal.
  • a crimp terminal having the following configuration. That is, the crimp terminal includes a terminal connection portion, a conductor connection portion, and a covering connection portion.
  • the terminal connection portion is connected to another terminal.
  • the conductor connection portion is connected to a conductor of an electric wire.
  • the said covering connection part is connected with the coating
  • a linear protrusion is formed on a connection surface, which is a surface connected to the coating, of the surfaces of the coating connection portion.
  • the protruding height of the protruding portion is 25% or more and 63% or less of the thickness of the coating.
  • the protruding portion of the covering connection portion sufficiently penetrates into the covering of the electric wire when connecting the crimping terminal and the electric wire. Can be connected strongly. Accordingly, it is possible to realize a crimp terminal having a configuration in which the electric wire is difficult to come off even when a tensile force is applied to the electric wire.
  • the protruding portion is formed so that the longitudinal direction of the protruding portion is along the circumferential direction of the coating when connected to the coating.
  • the protrusion is formed so as to intersect the direction of the tensile force applied to the electric wire (usually the longitudinal direction of the electric wire), the resistance to the tensile force of the electric wire can be further improved.
  • the above-described crimp terminal preferably has the following configuration. That is, when the two end portions approaching each other when connecting the sheath of the wire to the sheath connection portion are referred to as circumferential end portions, the protruding portion avoids the circumferential end portion of the sheath connection portion. It is formed in the position.
  • the protruding portions are formed on the covering connection portion.
  • the above-described crimp terminal preferably has the following configuration. That is, at least the covering connection portion is formed by processing a plate material.
  • the protrusion height of the protrusion is 20% or more and 50% or less of the thickness of the plate material.
  • the protruding portion by forming the protruding portion, it is possible to increase the circumferential length of the covering connection portion while maintaining the same compression rate as that in the case of forming the groove portion. Accordingly, it is possible to prevent the covering from being caught when the covering connecting portion is closed.
  • an electric wire with a terminal having the following configuration. That is, this electric wire with a terminal includes an electric wire and a crimp terminal.
  • the crimp terminal is connected to the conductor and covering of the electric wire.
  • the crimp terminal includes a terminal connection portion, a conductor connection portion, and a covering connection portion.
  • the terminal connection portion is connected to another terminal.
  • the conductor connection portion is connected to the conductor of the electric wire.
  • the said covering connection part is connected with the said coating
  • a linear protrusion is formed on a connection surface, which is a surface connected to the coating, of the surfaces of the coating connection portion.
  • the protruding height of the protruding portion is 25% or more and 63% or less of the thickness of the coating.
  • the protruding portion formed on the connection surface of the covering connection portion sufficiently bites into the covering of the electric wire, so even when a force is applied to the electric wire, It is possible to realize a terminal-attached electric wire with a configuration in which the electric wire is difficult to come off.
  • the protruding portion is formed along the circumferential direction of the covering.
  • the projecting portion is formed so as to intersect the direction of the force applied to the electric wire (usually the longitudinal direction of the electric wire), the resistance to pulling of the electric wire can be further improved.
  • FIG. 1 is a perspective view showing a configuration of a terminal-attached electric wire 1 according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the electric wire 1 with a terminal.
  • FIG. 3 is a perspective view showing the configuration of the crimp terminal 20 before connecting the electric wire 10.
  • the electric wire with terminal 1 is an electric wire to which a female terminal is connected, and is connected to a male joint connector or the like. As shown in FIG. 1, the electric wire with terminal 1 includes an electric wire 10 and a crimp terminal 20.
  • the electric wire 10 includes a conductor 11 and a coating 12.
  • the conductor 11 is a bundle of a plurality of aluminum or aluminum alloy wires.
  • the conductor 11 may be made of a material other than the above (for example, copper) as long as it has conductivity.
  • the shape of the conductor 11 and the conductor cross-sectional area are arbitrary, but the conductor cross-sectional area of this embodiment is 0.5 mm 2 .
  • the covering 12 is made of an insulating material such as a resin and is disposed so as to cover the periphery of the conductor 11.
  • the thickness of the coating 12 is arbitrary, but is 0.2 mm in this embodiment.
  • the crimp terminal 20 is a terminal made of copper having a surface plated with tin (Sn), silver (Ag) or the like, or a copper alloy such as brass. By configuring the crimp terminal 20 with copper or a copper alloy, conductivity and strength can be ensured. In addition, if the crimp terminal 20 is a conductor, you may be comprised from raw materials (for example, aluminum) other than copper. Moreover, the crimp terminal 20 is shape
  • the crimp terminal 20 includes a covering connection portion (insulation barrel) 21, a conductor connection portion (wire barrel) 22, and a terminal connection portion 23.
  • the covering connection portion 21 is a portion that is substantially U-shaped as shown in FIG. 3 by bending the plate material. Therefore, the covering connection portion 21 is not a closed shape such as a cylinder but a part thereof is opened (specifically, the covering connection portion 21 is U-shaped, and the end portions are open to each other). ).
  • the inner surface of the sheath connection portion 21 (the surface connected to the sheath 12 of the electric wire 10) is referred to as a connection surface 21a.
  • the electric wire 10 is set on the connection surface 21a (specifically, the positions of the connection surface 21a and the covering 12 are aligned), and the open portion of the covering connection portion 21 is closed with a tool or the like.
  • the covering connection portion 21 and the covering 12 are mechanically and electrically connected to each other by being crimped so as to be close to each other.
  • connection surface 21a two linear protrusions 21b are formed on the connection surface 21a.
  • the protruding portion 21b is formed so that the longitudinal direction of the protruding portion 21b is along the longitudinal direction of the covering connection portion 21 (in other words, the circumferential direction of the crimp terminal 20 after the connection of the electric wire 10).
  • the protruding portion 21b is formed along the direction from one end of the open shape (U shape) to the other end.
  • the protrusion 21b is formed in advance by press work or the like before the electric wire 10 is connected.
  • the protrusion 21b is formed at a position (specifically, a position away from the circumferential end by a thickness or more) away from the circumferential end (circumferential end).
  • the protrusion 21b has a circular cross section when cut in a direction perpendicular to the circumferential direction (a cross section when cut along a plane parallel to the longitudinal direction and the plate thickness direction of the electric wire 10). It is formed to have an arc shape (in other words, to have a curvature so as to protrude in an arc shape).
  • an arc shape in other words, to have a curvature so as to protrude in an arc shape.
  • the tolerance to the tensile force of the electric wire 10 can be improved.
  • the two protrusion parts 21b are formed, one may be sufficient and three or more may be sufficient.
  • the protrusion part 21b is not divided
  • the conductor connection portion 22 is a portion that is substantially U-shaped as shown in FIG. 3 by bending the plate material. Therefore, a part of the conductor connection portion 22 is opened in the same manner as the covering connection portion 21. In this way, the crimp terminal 20 including the opened covering connection portion 21 and the conductor connection portion 22 is referred to as an open barrel terminal (open barrel type terminal).
  • the conductor connecting portion 22 is connected to the conductor 11 of the electric wire 10. Specifically, the electric wire 10 is set on the inner surface of the conductor connection portion 22 (hereinafter referred to as the connection surface 22a) (specifically, the positions of the connection surface 22a and the conductor 11 are aligned), and the conductor connection portion is then used with a tool or the like By closing (caulking) the open portion of 22, the conductor connecting portion 22 and the conductor 11 are mechanically and electrically connected.
  • a plurality of rectangular recesses 22b are formed on the connection surface 22a.
  • the recesses 22b are formed side by side in the longitudinal direction and the circumferential direction of the electric wire 10.
  • the edge of the recess 22 b bites into the conductor 11. Thereby, the electric wire 10 and the crimp terminal 20 can be reliably conducted.
  • the terminal connection portion 23 is configured in a box shape, and the tip portion is open. By inserting another male terminal into the tip portion, the crimp terminal 20 and the other male terminal can be electrically and mechanically connected.
  • the crimp terminal 20 including the female terminal connection portion 23 has been described as an example.
  • the crimp terminal 20 may include a male terminal connection portion.
  • FIG. 4 is a table showing the results of an experiment confirming the relationship between the presence or absence of the protruding portion 21b or the groove portion 31b and the resistance to tensile force.
  • FIG. 5 is a perspective view showing a crimp terminal 30 of a comparative example in which a groove portion 31 b is formed in the covering connection portion 31.
  • the groove portion 31 b is formed on the connection surface 31 a of the covering connection portion 31 of the crimp terminal 30.
  • Each of the above crimp terminals is made of a copper alloy (specifically, JC400), and has a plate thickness (plate material thickness) of 0.25 mm and a circumferential length (circumference) when the covering connection portion 21 is developed. (Length, unfolded length) is 5.1 mm.
  • the covering portion C / H is the crimp height (height, length in the vertical direction in FIG. 2) of the covering portion (the portion of the wire with terminal 1 where the covering 12 is crimped).
  • the crimp height of the covering portion is 1.50 mm to 1.67 mm.
  • the covering portion C / W is a crimp width (width, length in the front and back direction in FIG. 2) of the covering portion.
  • the crimp width of the covering portion is 2.0 mm.
  • the aspect ratio is the length (ratio) of the crimp height with respect to the crimp width of the covering portion.
  • Such five kinds of electric wires with terminals were prepared, and an instantaneous force was applied in the longitudinal direction of the electric wires 10. Specifically, a weight having a predetermined weight was connected to the electric wire 10 and the weight was dropped. In the table of FIG. 4, “A” is described when the electric wire 10 is not cut, “B” when the covering 12 of the electric wire with terminal is broken, and “C” when the electric wire 10 is cut. .
  • the terminal-attached electric wire 1 (particularly the aspect ratio of 0.75 and 0.78) in which the protruding portion 21b is formed on the connection surface 21a is a crimp terminal and connection in which nothing is formed on the connection surface. It can be seen that it can withstand a strong impact of several hundred grams or more compared to a crimp terminal having a groove 31b formed on the surface 31a. It can also be seen that the crimp terminal 30 with the groove 31b formed on the connection surface 31a does not change much in resistance to impact compared to a crimp terminal with nothing formed on the connection surface. Even when the protruding portion 21b is formed on the connection surface 21a, if the aspect ratio is 0.83 or more, the resistance to impact may be about half. Therefore, the aspect ratio is preferably set to a value smaller than 0.83.
  • FIG. 6 shows a state where the covering connection portion 21 is cut at the center in the circumferential direction.
  • the height of the protruding portion 21b is the length in the direction protruding from the plate material (the portion protruding from the plate material).
  • the width of the protruding portion 21 b is the length of the portion where the protruding portion 21 b is formed in the longitudinal direction of the electric wire 10.
  • the pitch of the protrusions 21b is the interval between the adjacent protrusions 21b (the distance between the central parts in the width direction of the adjacent protrusions 21b).
  • FIG. 7A is a graph showing the relationship between the height of the protruding portion 21b and the tensile analysis load.
  • the tensile analysis load was determined for the crimp terminal 20 having the protrusions 21b having heights of 0.05 mm, 0.1 mm, and 0.125 mm. As shown in FIG. 7A, the tensile analysis load increases as the height of the protruding portion 21b increases.
  • FIG. 7B is a graph showing the relationship between the depth of the groove 31b and the tensile analysis load.
  • the tensile analysis load was obtained for the crimp terminal 30 having the depth of the groove 31b of 0.05 mm, 0.1 mm, and 0.125 mm.
  • the crimp terminal 20 formed with the protruding portion 21b has a very high resistance to tensile load compared to the crimp terminal 30 formed with the groove portion 31b. I understand.
  • the height of the protruding portion 21b or the depth of the groove portion 31b is 0.05 mm and 0.1 mm, it can be seen that it has approximately twice the resistance.
  • the plate thickness of the covering connection portion 21 of the crimp terminal 20 used this time is 0.25 mm. It is considered that the resistance to the tensile force is improved as the height of the protruding portion 21b is increased, but considering the strength and processing of the plate thickness, the height of the protruding portion 21b is 50% or less of the plate thickness. Is preferred. In consideration of resistance to tensile force, it is preferably 20% or more of the plate thickness.
  • the width of the protruding portion 21b used this time is 0.3 mm, it may be within a range of 0.2 mm to 0.4 mm, for example.
  • the width of the protruding portion 21b is smaller than 0.2 mm, the covering 12 is likely to be cut.
  • the width of the protruding portion 21b is larger than 0.4 mm, it is difficult to bite into the coating 12, and the strength may be reduced.
  • the pitch of the protrusion part 21b used this time is 0.75 mm, it may be in the range of 0.60 mm or more and 0.90 mm or less. If the pitch of the protrusions 21b is narrower than 0.60 mm, the coating 12 is difficult to enter between the protrusions 21b, and the strength may be reduced. On the other hand, when the pitch of the protruding portions 21b is larger than 0.90 mm, the covering connection portion 21 itself becomes large and may not fit in the connector housing at the connection destination.
  • the thickness of the covering 12 of the electric wire 10 used this time is 0.2 mm.
  • the height of the protrusion 21b is preferably 63% ( ⁇ 0.125 mm / 0.2 mm) or less or half or less of the thickness of the coating 12.
  • cover 12 here is the thickness of the coating
  • the protruding portion 21b is superior to the groove portion 31b in addition to the load resistance.
  • the compression ratio (the cross-sectional area of the coating 12 after caulking with respect to the cross-sectional area of the coating 12 before caulking) is the same value, and the height and circumference The lengths were compared. Since the protruding portion 21b is formed in the crimp terminal 20 of the present embodiment, the height is increased even with the same compression rate, and therefore the peripheral length is longer than that of the crimp terminal 30 of the comparative example.
  • FIG. 9 is a diagram illustrating a process of crimping the covering connection portion 21.
  • the state shown in FIG. 9C is obtained via FIG. 9B.
  • the state shown in FIG. 9B is obtained via FIG. 9B.
  • the distance between the covering 12 and the covering connecting portion 21 when the circumferential ends are brought into contact with each other is referred to as a clearance L1.
  • the present embodiment is superior to the comparative example from the viewpoint of avoiding the biting of the coating 12.
  • the crimp terminal 20 of the above embodiment includes the terminal connection portion 23, the conductor connection portion 22, and the covering connection portion 21.
  • the terminal connection part 23 is connected to other terminals.
  • the conductor connection part 22 has an open part, and is connected to the conductor 11 of the electric wire 10 by setting the electric wire 10 and closing the open part.
  • the covering connection portion 21 has an opened portion, and is connected to the covering 12 of the electric wire 10 by setting the electric wire 10 and closing the opened portion.
  • a linear protrusion 21 b is formed on the connection surface 21 a which is a surface connected to the coating 12 among the surfaces of the coating connection portion 21. Further, the (projection) height of the protrusion 21 b is 25% or more and 63% or less of the thickness of the coating 12.
  • the protruding portion 21b of the covering connection portion 21 bites into the sheath 12 of the electric wire 10 by connecting the crimp terminal 20 and the electric wire 10, the crimp terminal 20 and the sheath 12 can be strongly connected. Therefore, even when a tensile force is applied to the electric wire 10, an open barrel terminal having a configuration in which the electric wire 10 is difficult to come off can be realized.
  • the protruding portion 21b is formed, the length in the circumferential direction of the covering connection portion 21 can be increased while maintaining the same compression rate as that when the groove portion 31b is formed. Therefore, the covering 12 can be prevented from being caught when the covering connecting portion 21 is closed.
  • the protruding portion 21 b is formed so that the longitudinal direction of the protruding portion 21 b is along the circumferential direction of the covering 12 when connected to the covering 12.
  • the protrusion part 21b is formed so that it may cross
  • the protrusion part 21b is the circumferential direction edge part of the coating
  • the covering connection portion 21 can be easily processed.
  • the covering connection portion 21 is formed with a plurality of protruding portions 21b.
  • the protruding portion 21b is formed on the connection surface 21a, but both the protruding portion 21b and the groove portion 31b may be formed on the connecting surface 21a. Further, in the present embodiment, the protruding portion 21b protrudes in an arc shape, but the shape of the protruding portion 21b is arbitrary and may be protruded in a rectangular shape. Moreover, the shape of the connection surface 22a of the conductor connection part 22 is arbitrary, and the recessed part 22b may not be formed, and the recessed part or convex part of another shape may be formed.
  • the shape of the covering connection portion 21 of the crimp terminal 20 before crimping is arbitrary and is not limited to a substantially U shape.
  • the caulking method is arbitrary, and the caulking may be performed so that the circumferential ends overlap each other.
  • the terminal-attached electric wire 1 is assumed to be applied to, for example, a wire harness installed in an automobile, but can be used as a part of connectors at various locations.

Abstract

A crimp terminal 20 is provided with a terminal connection part 23, a conductor connection part 22, and a covering connection part 21. The terminal connection part 23 is connected to another terminal. The conductor connection part 22 is connected to the conductor of an electric wire. The covering connection part 21 is connected to the covering of the electric wire. On a connection surface 21a which is a surface of the covering connection part 21 and which is connected to the covering, linear protruding sections 21b are formed. The protruding heights of the protruding sections 21b are each 25-63% of the thickness of the covering.

Description

圧着端子及び端子付き電線Crimp terminal and electric wire with terminal
　本発明は、主として、圧着により電線と電気的に接続される圧着端子に関する。 The present invention mainly relates to a crimp terminal that is electrically connected to an electric wire by crimping.
　ワイヤハーネスは、自動車の車体に配索され、当該自動車が備える各種電気機器への電力供給、電気機器間の制御信号の通信等に利用される。ワイヤハーネスは、束ねられた複数の電線、及びこれらの電線に接続された端子から構成される。特許文献１は、この種の端子付き電線を開示する。 The wire harness is routed in the body of an automobile, and is used for power supply to various electric devices included in the automobile, communication of control signals between the electric devices, and the like. A wire harness is comprised from the several electric wire bundled and the terminal connected to these electric wires. Patent document 1 discloses this kind of electric wire with a terminal.
　特許文献１の圧着端子は、被水領域で使用されるものであり、防水性能が要求される。この圧着端子は、円筒状の電線接続部を備えるクローズドバレル端子である。この円筒状の電線接続部の中に電線を挿入して当該電線接続部を圧縮することで圧着端子と電線とが接続される。また、電線接続部が円筒であるため、電線を伝って水が浸入することを防止できる。 The crimp terminal of Patent Document 1 is used in a wet area and requires waterproof performance. This crimp terminal is a closed barrel terminal provided with a cylindrical wire connecting portion. The crimp terminal and the electric wire are connected by inserting the electric wire into the cylindrical electric wire connecting portion and compressing the electric wire connecting portion. Moreover, since an electric wire connection part is a cylinder, it can prevent that water penetrate | invades along an electric wire.
　特許文献１の変形例の圧着端子には、電線接続部の内側に導通用押圧部と防水用圧縮部が形成されている。導通用押圧部は、矩形状の凹部であり、当該凹部の縁により電線の導体を強く押圧して電線と端子の導通を確保する。防水用圧縮部は、円弧状の突出部であり、当該突出部で電線の被覆を圧縮することで防水性能を向上させる。 In the crimp terminal of the modified example of Patent Document 1, a conduction pressing portion and a waterproof compression portion are formed inside the wire connection portion. The conduction pressing portion is a rectangular recess, and the conductor of the wire is strongly pressed by the edge of the recess to ensure conduction between the wire and the terminal. The waterproof compression part is an arcuate protrusion, and the waterproof performance is improved by compressing the coating of the electric wire with the protrusion.
　特許文献２の圧着端子は、ワイヤバレルとインシュレーションバレルとを備える。ワイヤバレルは、板材を略Ｕ字状に曲げて形成されており、その間に電線の導体を配置してカシメることで当該導体と接続される。インシュレーションバレルは、板材を略Ｕ字状に曲げて形成されており、その間に電線の被覆を配置してカシメることで当該被覆と接続される。 The crimp terminal of Patent Document 2 includes a wire barrel and an insulation barrel. The wire barrel is formed by bending a plate material into a substantially U shape, and is connected to the conductor by arranging and caulking the conductor of the electric wire therebetween. The insulation barrel is formed by bending a plate material into a substantially U shape, and is connected to the coating by arranging and crimping the wire coating therebetween.
　特許文献２のような圧着端子はオープンバレル端子と称されている。オープンバレル端子は、特許文献１のクローズドバレル端子と異なり、電線と端子の接続部が密閉されていない。 The crimp terminal as in Patent Document 2 is called an open barrel terminal. Unlike the closed barrel terminal of Patent Document 1, the open barrel terminal is not hermetically sealed at the connection between the electric wire and the terminal.
　特許文献３は、ワイヤバレル及びインシュレーションバレル（圧着アーム）を備えるオープンバレル端子を開示する。インシュレーションバレルの内側には、端子の長手方向に沿うように２つのノッチが形成されている。また、この２つのノッチの間には、当該ノッチと直角をなすように延びる切込みが形成されている。 Patent Document 3 discloses an open barrel terminal including a wire barrel and an insulation barrel (crimp arm). Two notches are formed inside the insulation barrel along the longitudinal direction of the terminal. Further, a notch extending so as to form a right angle with the notch is formed between the two notches.
　特許文献４は、ワイヤバレル（導体圧着部）及びインシュレーションバレル（被覆加締部）を備えるオープンバレル端子を開示する。インシュレーションバレルの内側には、セレーション（凹部）が電線の長手方向と直交する方向に形成されている。特許文献４には、セレーションを形成することで、カシメ時にセレーションを電線の被覆に食い込ませて密着性を高めることにより、水分の侵入を防止できると記載されている。また、セレーションの代わりに凸条を設けても良い旨についても記載されている。 Patent Document 4 discloses an open barrel terminal including a wire barrel (conductor crimping portion) and an insulation barrel (coating crimping portion). On the inner side of the insulation barrel, serrations (concave portions) are formed in a direction perpendicular to the longitudinal direction of the electric wires. Patent Document 4 describes that by forming serrations, the penetration of moisture can be prevented by encroaching the serrations into the wire coating during caulking to improve adhesion. Moreover, it describes that a protruding line may be provided instead of serration.
特開２０１４－１６４８９９号公報JP 2014-164899 A 特開２００９－２４５７０１号公報JP 2009-245701 A 特開平１０－３１２８４４号公報Japanese Patent Laid-Open No. 10-31844 特開２０１１－２１６２５３号公報JP2011-216253A
　ところで、端子付き電線を自動車等へ設置した後、様々な要因によって電線に引張り力が掛かり、圧着端子から電線が外れてしまうことがある。 By the way, after an electric wire with a terminal is installed in an automobile or the like, a tensile force is applied to the electric wire due to various factors, and the electric wire may come off from the crimp terminal.
　更に、近年ではアルミ製の細い導体を用いた端子付き電線が採用され始めている。このような電線を採用する場合、導体の引張強度が低下するため、引張り力が掛かった場合に電線が外れ易くなる。 Furthermore, in recent years, electric wires with terminals using thin aluminum conductors have begun to be adopted. When such an electric wire is adopted, since the tensile strength of the conductor is reduced, the electric wire is easily detached when a tensile force is applied.
　また、特許文献３及び４では、インシュレーションバレルにセレーション等を形成することで密着性を高めることは記載されている。しかし、特許文献３及び４では、セレーション等の具体的な形状については記載されていない。 In Patent Documents 3 and 4, it is described that adhesion is improved by forming serrations or the like in the insulation barrel. However, Patent Documents 3 and 4 do not describe a specific shape such as serration.
　本発明は以上の事情に鑑みてされたものであり、その主要な目的は、圧着端子において、電線に引張り力が掛かった場合でも端子から電線が外れにくい構成を提供することにある。 The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a configuration in which a wire is unlikely to come off from a terminal even when a tensile force is applied to the wire in a crimp terminal.
課題を解決するための手段及び効果Means and effects for solving the problems
　本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段とその効果を説明する。 The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.
　本発明の第１の観点によれば、以下の構成の圧着端子が提供される。即ち、この圧着端子は、端子接続部と、導体接続部と、被覆接続部と、を備える。前記端子接続部は、他の端子と接続される。前記導体接続部は、電線の導体と接続される。前記被覆接続部は、前記電線の被覆と接続される。前記被覆接続部の面のうち前記被覆と接続される面である接続面には、線状の突出部が形成されている。また、前記突出部の突出高さは、前記被覆の厚みの２５％以上６３％以下である。 According to the first aspect of the present invention, a crimp terminal having the following configuration is provided. That is, the crimp terminal includes a terminal connection portion, a conductor connection portion, and a covering connection portion. The terminal connection portion is connected to another terminal. The conductor connection portion is connected to a conductor of an electric wire. The said covering connection part is connected with the coating | cover of the said electric wire. A linear protrusion is formed on a connection surface, which is a surface connected to the coating, of the surfaces of the coating connection portion. The protruding height of the protruding portion is 25% or more and 63% or less of the thickness of the coating.
　これにより、突出高さが上記の範囲の突出部を形成することで、圧着端子と電線とを接続する際に被覆接続部の突出部が電線の被覆に十分に食い込むため、圧着端子と被覆とを強力に接続することができる。従って、電線に引張り力が掛かった場合でも電線が外れにくい構成の圧着端子が実現できる。 Thus, by forming the protruding portion having a protruding height in the above range, the protruding portion of the covering connection portion sufficiently penetrates into the covering of the electric wire when connecting the crimping terminal and the electric wire. Can be connected strongly. Accordingly, it is possible to realize a crimp terminal having a configuration in which the electric wire is difficult to come off even when a tensile force is applied to the electric wire.
　前記の圧着端子においては、前記突出部は、前記被覆との接続時に当該突出部の長手方向が前記被覆の周方向に沿うように形成されていることが好ましい。 In the crimp terminal, it is preferable that the protruding portion is formed so that the longitudinal direction of the protruding portion is along the circumferential direction of the coating when connected to the coating.
　これにより、電線に掛かる引張り力の向き（通常は電線の長手方向）に交差するように突出部が形成されているため、電線の引張り力への耐性を一層向上させることができる。 Thereby, since the protrusion is formed so as to intersect the direction of the tensile force applied to the electric wire (usually the longitudinal direction of the electric wire), the resistance to the tensile force of the electric wire can be further improved.
　前記の圧着端子においては、以下の構成とすることが好ましい。即ち、前記被覆接続部に前記電線の被覆を接続するときに互いに近づく２つの端部を周方向端部と称したときに、前記突出部は、前記被覆接続部の前記周方向端部を避けた位置に形成されている。 The above-described crimp terminal preferably has the following configuration. That is, when the two end portions approaching each other when connecting the sheath of the wire to the sheath connection portion are referred to as circumferential end portions, the protruding portion avoids the circumferential end portion of the sheath connection portion. It is formed in the position.
　これにより、周方向端部に突出部を形成しなくて良いため、被覆接続部の加工が容易となる。 This eliminates the need to form a protruding portion at the end in the circumferential direction, thus facilitating the processing of the covering connection portion.
　前記の圧着端子においては、前記被覆接続部には、前記突出部が複数本形成されることが好ましい。 In the crimp terminal, it is preferable that a plurality of the protruding portions are formed on the covering connection portion.
　これにより、電線の引張りへの耐性を一層向上させることができる。 This can further improve the resistance to electric wire tension.
　前記の圧着端子においては、以下の構成とすることが好ましい。即ち、少なくとも前記被覆接続部は、板材を加工することで形成されている。前記突出部の突出高さは、前記板材の厚みの２０％以上５０％以下である。 The above-described crimp terminal preferably has the following configuration. That is, at least the covering connection portion is formed by processing a plate material. The protrusion height of the protrusion is 20% or more and 50% or less of the thickness of the plate material.
　これにより、被覆接続部の強度を維持しつつ、突出部を十分に被覆に食い込ませることができる。 This makes it possible to cause the protrusion to sufficiently penetrate into the coating while maintaining the strength of the coating connection portion.
　なお、突出部を形成することで、溝部を形成する場合と同じ圧縮率を保ちつつ、被覆接続部の周方向の長さを長くすることができる。従って、被覆接続部を閉じる際の被覆の挟込みを防止できる。 In addition, by forming the protruding portion, it is possible to increase the circumferential length of the covering connection portion while maintaining the same compression rate as that in the case of forming the groove portion. Accordingly, it is possible to prevent the covering from being caught when the covering connecting portion is closed.
　本発明の第２の観点によれば、以下の構成の端子付き電線が提供される。即ち、この端子付き電線は、電線と、圧着端子と、を備える。前記圧着端子は、前記電線の導体及び被覆と接続される。前記圧着端子は、端子接続部と、導体接続部と、被覆接続部と、を備える。前記端子接続部は、他の端子と接続される。前記導体接続部は、前記電線の前記導体と接続される。前記被覆接続部は、前記電線の前記被覆と接続される。前記被覆接続部の面のうち前記被覆と接続される面である接続面には、線状の突出部が形成されている。また、前記突出部の突出高さは、前記被覆の厚みの２５％以上６３％以下である。 According to a second aspect of the present invention, an electric wire with a terminal having the following configuration is provided. That is, this electric wire with a terminal includes an electric wire and a crimp terminal. The crimp terminal is connected to the conductor and covering of the electric wire. The crimp terminal includes a terminal connection portion, a conductor connection portion, and a covering connection portion. The terminal connection portion is connected to another terminal. The conductor connection portion is connected to the conductor of the electric wire. The said covering connection part is connected with the said coating | cover of the said electric wire. A linear protrusion is formed on a connection surface, which is a surface connected to the coating, of the surfaces of the coating connection portion. The protruding height of the protruding portion is 25% or more and 63% or less of the thickness of the coating.
　これにより、上記の範囲の突出部を形成することで、被覆接続部の接続面に形成された突出部が電線の被覆に十分に食い込んでいるため、電線に力が掛かった場合でも圧着端子から電線が外れにくい構成の端子付き電線が実現できる。 As a result, by forming the protruding portion in the above range, the protruding portion formed on the connection surface of the covering connection portion sufficiently bites into the covering of the electric wire, so even when a force is applied to the electric wire, It is possible to realize a terminal-attached electric wire with a configuration in which the electric wire is difficult to come off.
　前記の端子付き電線において、前記突出部は前記被覆の周方向に沿うように形成されていることが好ましい。 In the electric wire with terminal, it is preferable that the protruding portion is formed along the circumferential direction of the covering.
　これにより、電線に掛かる力の向き（通常は電線の長手方向）に交差するように突出部が形成されているため、電線の引張りへの耐性を一層向上させることができる。 Thereby, since the projecting portion is formed so as to intersect the direction of the force applied to the electric wire (usually the longitudinal direction of the electric wire), the resistance to pulling of the electric wire can be further improved.
本発明の一実施形態に係る端子付き電線の構成を示す斜視図。The perspective view which shows the structure of the electric wire with a terminal which concerns on one Embodiment of this invention. 端子付き電線の断面図。Sectional drawing of an electric wire with a terminal. 電線を接続する前の圧着端子の構成を示す斜視図。The perspective view which shows the structure of the crimp terminal before connecting an electric wire. 突出部又は溝部の有無と引張り力への耐性との関連性を確かめた実験の結果を示す表。The table | surface which shows the result of the experiment which confirmed the relationship between the presence or absence of a protrusion part or a groove part, and the tolerance to tensile force. 被覆接続部に溝部が形成された比較例の圧着端子を示す斜視図。The perspective view which shows the crimp terminal of the comparative example by which the groove part was formed in the covering connection part. 被覆接続部の突出部のパラメータを説明する拡大図。The enlarged view explaining the parameter of the protrusion part of a covering connection part. 突出部の高さと引張り解析荷重の関係、及び、溝部の深さと引張り解析荷重の関係を示すグラフ。The graph which shows the relationship between the height of a protrusion part, and a tension analysis load, and the relationship between the depth of a groove part, and a tension analysis load. 圧縮率を揃えた場合の本実施形態及び比較例のサイズ等を示す表。The table | surface which shows the size etc. of this embodiment when a compression rate is arranged, and a comparative example. 被覆接続部を閉じて被覆と接続する際の流れを示す図。The figure which shows the flow at the time of closing a coating | coated connection part and connecting with a coating | cover.
　次に、図面を参照して本発明の実施形態を説明する。図１は、本発明の実施形態に係る端子付き電線１の構成を示す斜視図である。図２は、端子付き電線１の断面図である。図３は、電線１０を接続する前の圧着端子２０の構成を示す斜視図である。 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a terminal-attached electric wire 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the electric wire 1 with a terminal. FIG. 3 is a perspective view showing the configuration of the crimp terminal 20 before connecting the electric wire 10.
　端子付き電線１は、メス型の端子が接続された電線であり、オス型のジョイントコネクタ等に接続される。図１に示すように、端子付き電線１は、電線１０と、圧着端子２０と、を備える。 The electric wire with terminal 1 is an electric wire to which a female terminal is connected, and is connected to a male joint connector or the like. As shown in FIG. 1, the electric wire with terminal 1 includes an electric wire 10 and a crimp terminal 20.
　電線１０は、導体１１と被覆１２とから構成されている。導体１１は、複数のアルミニウム又はアルミニウム合金の素線を束ねたものである。なお、導体１１は導電性を有していれば上記以外の素材（例えば銅）から構成されていても良い。導体１１の形状及び導体断面積は任意であるが、本実施形態の導体断面積は０．５ｍｍ2である。被覆１２は、樹脂等の絶縁性を有する素材から構成されており、導体１１の周囲を覆うように配置されている。被覆１２の厚さは任意であるが、本実施形態では０．２ｍｍである。 The electric wire 10 includes a conductor 11 and a coating 12. The conductor 11 is a bundle of a plurality of aluminum or aluminum alloy wires. The conductor 11 may be made of a material other than the above (for example, copper) as long as it has conductivity. The shape of the conductor 11 and the conductor cross-sectional area are arbitrary, but the conductor cross-sectional area of this embodiment is 0.5 mm 2 . The covering 12 is made of an insulating material such as a resin and is disposed so as to cover the periphery of the conductor 11. The thickness of the coating 12 is arbitrary, but is 0.2 mm in this embodiment.
　圧着端子２０は、表面が錫（Ｓｎ）や銀（Ａｇ）等でメッキされた銅、又は、黄銅等の銅合金から構成された端子である。圧着端子２０を銅又は銅合金で構成することで、導電性と強度を確保することができる。なお、圧着端子２０は、導体であれば銅以外の素材（例えばアルミニウム）から構成されていても良い。また、圧着端子２０は、打ち抜いた金属板に対して、折曲げ及び接合等を行うことで成形される。図１から図３に示すように、圧着端子２０は、被覆接続部（インシュレーションバレル）２１と、導体接続部（ワイヤバレル）２２と、端子接続部２３と、を備える。 The crimp terminal 20 is a terminal made of copper having a surface plated with tin (Sn), silver (Ag) or the like, or a copper alloy such as brass. By configuring the crimp terminal 20 with copper or a copper alloy, conductivity and strength can be ensured. In addition, if the crimp terminal 20 is a conductor, you may be comprised from raw materials (for example, aluminum) other than copper. Moreover, the crimp terminal 20 is shape | molded by performing bending, joining, etc. with respect to the stamped metal plate. As shown in FIGS. 1 to 3, the crimp terminal 20 includes a covering connection portion (insulation barrel) 21, a conductor connection portion (wire barrel) 22, and a terminal connection portion 23.
　被覆接続部２１は、板材が折り曲げられることで図３に示すように略Ｕ字状となっている部分である。従って、被覆接続部２１は円筒等の閉じられた形状ではなく、一部が開放されている（具体的には被覆接続部２１はＵ字状であり、端部同士の間が開放されている）。ここで、被覆接続部２１の内側の面（電線１０の被覆１２と接続される面）を接続面２１ａと称する。接続面２１ａに電線１０をセットして（詳細には接続面２１ａと被覆１２の位置を合わせて）、工具等で被覆接続部２１の開放部分を閉じる（カシメる、Ｕ字状の端部同士を近づける）ように圧着することで、被覆接続部２１と被覆１２とが機械的及び電気的に接続される。 The covering connection portion 21 is a portion that is substantially U-shaped as shown in FIG. 3 by bending the plate material. Therefore, the covering connection portion 21 is not a closed shape such as a cylinder but a part thereof is opened (specifically, the covering connection portion 21 is U-shaped, and the end portions are open to each other). ). Here, the inner surface of the sheath connection portion 21 (the surface connected to the sheath 12 of the electric wire 10) is referred to as a connection surface 21a. The electric wire 10 is set on the connection surface 21a (specifically, the positions of the connection surface 21a and the covering 12 are aligned), and the open portion of the covering connection portion 21 is closed with a tool or the like. The covering connection portion 21 and the covering 12 are mechanically and electrically connected to each other by being crimped so as to be close to each other.
　また、図３に示すように接続面２１ａには、線状の突出部２１ｂが２本形成されている。突出部２１ｂは、当該突出部２１ｂの長手方向が被覆接続部２１の長手方向（換言すれば電線１０の接続後の圧着端子２０の周方向）に沿うように形成されている。更に換言すれば、突出部２１ｂは、開放状（Ｕ字状）の一端から他端に向かう方向に沿って形成されている。 Further, as shown in FIG. 3, two linear protrusions 21b are formed on the connection surface 21a. The protruding portion 21b is formed so that the longitudinal direction of the protruding portion 21b is along the longitudinal direction of the covering connection portion 21 (in other words, the circumferential direction of the crimp terminal 20 after the connection of the electric wire 10). In other words, the protruding portion 21b is formed along the direction from one end of the open shape (U shape) to the other end.
　突出部２１ｂは、電線１０の接続前に予めプレス加工等によって形成されている。ここで、突出部２１ｂは、前記周方向の端部（周方向端部）を避けた位置（具体的には、周方向端部から板厚分以上離れた位置）に形成されている。これにより、周方向端部にプレス加工を行わなくて良いため、プレス加工時の被覆接続部２１の変形を確実に防止できる。また、被覆接続部２１の変形を考慮しなくて良いため、当該プレス加工を容易に行うことができる。 The protrusion 21b is formed in advance by press work or the like before the electric wire 10 is connected. Here, the protrusion 21b is formed at a position (specifically, a position away from the circumferential end by a thickness or more) away from the circumferential end (circumferential end). Thereby, since it is not necessary to perform a press work to the circumferential direction edge part, the deformation | transformation of the covering connection part 21 at the time of a press work can be prevented reliably. Moreover, since it is not necessary to consider the deformation | transformation of the covering connection part 21, the said press work can be performed easily.
　突出部２１ｂは、図２及び図３に示すように、周方向に垂直な方向で切ったときの断面（電線１０の長手方向及び板厚方向に平行な面で切ったときの断面）が円弧状となるように（換言すれば円弧状に突出するように、曲率を有するように）形成されている。突出部２１ｂを円弧状に突出させることで、板材に突出部２１ｂを形成するときや、被覆接続部２１をカシメるときの被覆接続部２１の割れを防止することができる。この円弧状の突出部２１ｂは、被覆接続部２１をカシメる際に被覆１２に食い込む。これにより、電線１０の引張り力への耐性を向上させることができる。特に、本実施形態では突出部２１ｂの長手方向（突出部２１ｂが形成される方向）と、電線１０の長手方向（主として引張り力が掛かる方向）と、が交わるため、引張り力への耐性を一層向上させることができる。 As shown in FIGS. 2 and 3, the protrusion 21b has a circular cross section when cut in a direction perpendicular to the circumferential direction (a cross section when cut along a plane parallel to the longitudinal direction and the plate thickness direction of the electric wire 10). It is formed to have an arc shape (in other words, to have a curvature so as to protrude in an arc shape). By projecting the projecting portion 21b in an arc shape, it is possible to prevent the covering connection portion 21 from being cracked when the projecting portion 21b is formed on the plate material or when the covering connecting portion 21 is crimped. The arc-shaped protruding portion 21b bites into the covering 12 when the covering connecting portion 21 is caulked. Thereby, the tolerance to the tensile force of the electric wire 10 can be improved. In particular, in the present embodiment, the longitudinal direction of the protruding portion 21b (direction in which the protruding portion 21b is formed) and the longitudinal direction of the electric wire 10 (mainly the direction in which the tensile force is applied) intersect with each other. Can be improved.
　なお、本実施形態では、突出部２１ｂは２本形成されるが、１本であっても良いし、３本以上であっても良い。また、本実施形態では、突出部２１ｂは周方向で分割されていないが、分割されていても良い。 In addition, in this embodiment, although the two protrusion parts 21b are formed, one may be sufficient and three or more may be sufficient. Moreover, in this embodiment, although the protrusion part 21b is not divided | segmented in the circumferential direction, it may be divided | segmented.
　導体接続部２２は、板材が折り曲げられることで図３に示すように略Ｕ字状となっている部分である。従って、導体接続部２２は、被覆接続部２１と同様に、一部が開放されている。このように、開放された被覆接続部２１及び導体接続部２２を備える圧着端子２０をオープンバレル端子（オープンバレルタイプの端子）と称する。 The conductor connection portion 22 is a portion that is substantially U-shaped as shown in FIG. 3 by bending the plate material. Therefore, a part of the conductor connection portion 22 is opened in the same manner as the covering connection portion 21. In this way, the crimp terminal 20 including the opened covering connection portion 21 and the conductor connection portion 22 is referred to as an open barrel terminal (open barrel type terminal).
　導体接続部２２は、電線１０の導体１１と接続される。具体的には、導体接続部２２の内側の面（以下、接続面２２ａ）に電線１０をセットして（詳細には接続面２２ａと導体１１の位置を合わせて）、工具等で導体接続部２２の開放部分を閉じる（カシメる）ことで、導体接続部２２と導体１１とが機械的及び電気的に接続される。 The conductor connecting portion 22 is connected to the conductor 11 of the electric wire 10. Specifically, the electric wire 10 is set on the inner surface of the conductor connection portion 22 (hereinafter referred to as the connection surface 22a) (specifically, the positions of the connection surface 22a and the conductor 11 are aligned), and the conductor connection portion is then used with a tool or the like By closing (caulking) the open portion of 22, the conductor connecting portion 22 and the conductor 11 are mechanically and electrically connected.
　また、図３に示すように接続面２２ａには、矩形状の凹部２２ｂが複数形成されている。凹部２２ｂは、電線１０の長手方向及び周方向に並べて形成されている。導体接続部２２をカシメることで、凹部２２ｂの縁が導体１１に食い込む。これにより、電線１０と圧着端子２０とを確実に導通することができる。 Further, as shown in FIG. 3, a plurality of rectangular recesses 22b are formed on the connection surface 22a. The recesses 22b are formed side by side in the longitudinal direction and the circumferential direction of the electric wire 10. By caulking the conductor connection portion 22, the edge of the recess 22 b bites into the conductor 11. Thereby, the electric wire 10 and the crimp terminal 20 can be reliably conducted.
　端子接続部２３は、ボックス状に構成されており、先端部分が開放されている。この先端部分に他のオス端子を挿入することで、圧着端子２０と他のオス端子とを電気的及び機械的に接続することができる。なお、本実施形態ではメス型の端子接続部２３を備える圧着端子２０を例に挙げて説明したが、圧着端子２０はオス型の端子接続部を備えていても良い。 The terminal connection portion 23 is configured in a box shape, and the tip portion is open. By inserting another male terminal into the tip portion, the crimp terminal 20 and the other male terminal can be electrically and mechanically connected. In the present embodiment, the crimp terminal 20 including the female terminal connection portion 23 has been described as an example. However, the crimp terminal 20 may include a male terminal connection portion.
　次に、図４及び図５を参照して、本発明の効果を確かめるために行った実験について説明する。図４は、突出部２１ｂ又は溝部３１ｂの有無と引張り力への耐性との関連性を確かめた実験の結果を示す表である。図５は、被覆接続部３１に溝部３１ｂが形成された比較例の圧着端子３０を示す斜視図である。 Next, with reference to FIG. 4 and FIG. 5, an experiment performed to confirm the effect of the present invention will be described. FIG. 4 is a table showing the results of an experiment confirming the relationship between the presence or absence of the protruding portion 21b or the groove portion 31b and the resistance to tensile force. FIG. 5 is a perspective view showing a crimp terminal 30 of a comparative example in which a groove portion 31 b is formed in the covering connection portion 31.
　今回の実験では、上述した突出部２１ｂが形成された圧着端子２０と、突出部２１ｂの代わりに溝部３１ｂが形成された圧着端子３０（図５を参照）と、突出部２１ｂと溝部３１ｂの何れも形成されていない圧着端子と、を用いた。なお、溝部３１ｂは、圧着端子３０の被覆接続部３１の接続面３１ａに形成されている。 In this experiment, any one of the above-described crimp terminal 20 in which the protruding portion 21b is formed, the crimp terminal 30 in which the groove portion 31b is formed instead of the protruding portion 21b (see FIG. 5), the protruding portion 21b and the groove portion 31b. And a crimp terminal that was not formed. The groove portion 31 b is formed on the connection surface 31 a of the covering connection portion 31 of the crimp terminal 30.
　上記の圧着端子は、何れも銅合金（詳細にはＪＣ４００）で構成されており、板厚（板材の厚み）が０．２５ｍｍで被覆接続部２１を展開したときの周方向の長さ（周長、展開長）が５．１ｍｍである。被覆部Ｃ／Ｈは、被覆部（端子付き電線１のうち被覆１２が圧着されている部分）のクリンプハイト（高さ、図２の上下方向の長さ）である。被覆部のクリンプハイトは、１．５０ｍｍ～１．６７ｍｍである。被覆部Ｃ／Ｗは、被覆部のクリンプワイド（幅、図２の紙面裏表方向の長さ）である。被覆部のクリンプワイドは、何れも２．０ｍｍである。縦横比率とは、被覆部のクリンプワイドに対するクリンプハイトの長さ（比率）である。 Each of the above crimp terminals is made of a copper alloy (specifically, JC400), and has a plate thickness (plate material thickness) of 0.25 mm and a circumferential length (circumference) when the covering connection portion 21 is developed. (Length, unfolded length) is 5.1 mm. The covering portion C / H is the crimp height (height, length in the vertical direction in FIG. 2) of the covering portion (the portion of the wire with terminal 1 where the covering 12 is crimped). The crimp height of the covering portion is 1.50 mm to 1.67 mm. The covering portion C / W is a crimp width (width, length in the front and back direction in FIG. 2) of the covering portion. The crimp width of the covering portion is 2.0 mm. The aspect ratio is the length (ratio) of the crimp height with respect to the crimp width of the covering portion.
　このような５種類の端子付き電線を用意し、電線１０の長手方向に瞬間的な力を加えた。具体的には、所定の重さの重りを電線１０に繋げて、この重りを落下させた。図４の表には、電線１０が切断しなかった場合は「Ａ」、端子付き電線の被覆１２が破れた場合は「Ｂ」、電線１０が切断した場合は「Ｃ」が記されている。 Such five kinds of electric wires with terminals were prepared, and an instantaneous force was applied in the longitudinal direction of the electric wires 10. Specifically, a weight having a predetermined weight was connected to the electric wire 10 and the weight was dropped. In the table of FIG. 4, “A” is described when the electric wire 10 is not cut, “B” when the covering 12 of the electric wire with terminal is broken, and “C” when the electric wire 10 is cut. .
　図４に示すように、接続面２１ａに突出部２１ｂが形成された端子付き電線１（特に縦横比率が０．７５及び０．７８）は、接続面に何も形成されていない圧着端子及び接続面３１ａに溝部３１ｂが形成された圧着端子と比較して、数百グラム以上強い衝撃に耐え得ることが分かる。また、接続面３１ａに溝部３１ｂが形成された圧着端子３０は、接続面に何も形成されていない圧着端子と比較して、衝撃への耐性があまり変わらないことも分かる。また、接続面２１ａに突出部２１ｂを形成する場合であっても、縦横比率が０．８３以上である場合、衝撃への耐性が半分程度になる可能性がある。従って、縦横比率は０．８３より小さい値にすることが好ましい。 As shown in FIG. 4, the terminal-attached electric wire 1 (particularly the aspect ratio of 0.75 and 0.78) in which the protruding portion 21b is formed on the connection surface 21a is a crimp terminal and connection in which nothing is formed on the connection surface. It can be seen that it can withstand a strong impact of several hundred grams or more compared to a crimp terminal having a groove 31b formed on the surface 31a. It can also be seen that the crimp terminal 30 with the groove 31b formed on the connection surface 31a does not change much in resistance to impact compared to a crimp terminal with nothing formed on the connection surface. Even when the protruding portion 21b is formed on the connection surface 21a, if the aspect ratio is 0.83 or more, the resistance to impact may be about half. Therefore, the aspect ratio is preferably set to a value smaller than 0.83.
　次に、図６及び図７を参照して、突出部２１ｂの高さ（突出高さ）と引張り力への耐性の関係について説明する。 Next, with reference to FIG. 6 and FIG. 7, the relationship between the height of the protrusion 21b (protrusion height) and resistance to tensile force will be described.
　図６は、被覆接続部２１を周方向の中央で切断した様子を示している。図６に示すように、突出部２１ｂの高さとは、板材から突出する方向（板材から突出する部分）の長さである。突出部２１ｂの幅とは、電線１０の長手方向において突出部２１ｂが形成されている部分の長さである。突出部２１ｂのピッチとは、隣り合う突出部２１ｂの間隔（隣り合う突出部２１ｂの幅方向の中央部同士の距離）である。 FIG. 6 shows a state where the covering connection portion 21 is cut at the center in the circumferential direction. As shown in FIG. 6, the height of the protruding portion 21b is the length in the direction protruding from the plate material (the portion protruding from the plate material). The width of the protruding portion 21 b is the length of the portion where the protruding portion 21 b is formed in the longitudinal direction of the electric wire 10. The pitch of the protrusions 21b is the interval between the adjacent protrusions 21b (the distance between the central parts in the width direction of the adjacent protrusions 21b).
　図７（ａ）は、突出部２１ｂの高さと引張り解析荷重の関係を示すグラフである。図７（ａ）では、突出部２１ｂの高さが０．０５ｍｍ、０．１ｍｍ、０．１２５ｍｍの圧着端子２０について、引張り解析荷重を求めた。図７（ａ）に示すように、突出部２１ｂの高さが高くなるに従って、引張り解析荷重が大きくなる。 FIG. 7A is a graph showing the relationship between the height of the protruding portion 21b and the tensile analysis load. In FIG. 7A, the tensile analysis load was determined for the crimp terminal 20 having the protrusions 21b having heights of 0.05 mm, 0.1 mm, and 0.125 mm. As shown in FIG. 7A, the tensile analysis load increases as the height of the protruding portion 21b increases.
　図７（ｂ）は、溝部３１ｂの深さと引張り解析荷重の関係を示すグラフである。図７（ｂ）では、溝部３１ｂの深さが０．０５ｍｍ、０．１ｍｍ、０．１２５ｍｍの圧着端子３０について、引張り解析荷重を求めた。図７（ａ）及び図７（ｂ）に示すように、突出部２１ｂを形成した圧着端子２０は、溝部３１ｂを形成した圧着端子３０と比較して、引張り荷重への耐性が非常に高いことが分かる。特に、突出部２１ｂの高さ又は溝部３１ｂの深さが０．０５ｍｍ、０．１ｍｍの場合、約２倍の耐性を有していることが分かる。 FIG. 7B is a graph showing the relationship between the depth of the groove 31b and the tensile analysis load. In FIG. 7B, the tensile analysis load was obtained for the crimp terminal 30 having the depth of the groove 31b of 0.05 mm, 0.1 mm, and 0.125 mm. As shown in FIG. 7A and FIG. 7B, the crimp terminal 20 formed with the protruding portion 21b has a very high resistance to tensile load compared to the crimp terminal 30 formed with the groove portion 31b. I understand. In particular, when the height of the protruding portion 21b or the depth of the groove portion 31b is 0.05 mm and 0.1 mm, it can be seen that it has approximately twice the resistance.
　今回用いた圧着端子２０の被覆接続部２１の板厚は０．２５ｍｍである。突出部２１ｂの高さを高くすればするほど引張り力への耐性は向上すると考えられるが、板厚の強度及び加工を考慮すると、突出部２１ｂの高さは板厚の５０％以下であることが好ましい。また、引張り力への耐性を考慮すると、板厚の２０％以上であることが好ましい。 The plate thickness of the covering connection portion 21 of the crimp terminal 20 used this time is 0.25 mm. It is considered that the resistance to the tensile force is improved as the height of the protruding portion 21b is increased, but considering the strength and processing of the plate thickness, the height of the protruding portion 21b is 50% or less of the plate thickness. Is preferred. In consideration of resistance to tensile force, it is preferably 20% or more of the plate thickness.
　また、今回用いた突出部２１ｂの幅は、０．３ｍｍであるが、例えば０．２ｍｍ以上０．４ｍｍ以下の範囲内であっても良い。突出部２１ｂの幅を０．２ｍｍより小さくすると被覆１２の切れが発生し易くなる。一方で、突出部２１ｂの幅を０．４ｍｍより大きくすると被覆１２に食い込みにくくなり、強度が低下する可能性がある。 Moreover, although the width of the protruding portion 21b used this time is 0.3 mm, it may be within a range of 0.2 mm to 0.4 mm, for example. When the width of the protruding portion 21b is smaller than 0.2 mm, the covering 12 is likely to be cut. On the other hand, if the width of the protruding portion 21b is larger than 0.4 mm, it is difficult to bite into the coating 12, and the strength may be reduced.
　また、今回用いた突出部２１ｂのピッチは０．７５ｍｍであるが、０．６０ｍｍ以上０．９０ｍｍ以下の範囲内であっても良い。突出部２１ｂのピッチを０．６０ｍｍより狭くすると、突出部２１ｂの間に被覆１２が入り込みにくくなり、強度が低下する可能性がある。一方で、突出部２１ｂのピッチを０．９０ｍｍより大きくすると、被覆接続部２１自体が大きくなり、接続先のコネクタハウジングへ収まらない可能性がある。 Moreover, although the pitch of the protrusion part 21b used this time is 0.75 mm, it may be in the range of 0.60 mm or more and 0.90 mm or less. If the pitch of the protrusions 21b is narrower than 0.60 mm, the coating 12 is difficult to enter between the protrusions 21b, and the strength may be reduced. On the other hand, when the pitch of the protruding portions 21b is larger than 0.90 mm, the covering connection portion 21 itself becomes large and may not fit in the connector housing at the connection destination.
　また、今回用いた電線１０の被覆１２の厚さは０．２ｍｍである。突出部２１ｂの高さを定める場合、被覆１２の厚さを考慮する必要がある。即ち、突出部２１ｂの高さを高くし過ぎると、突出部２１ｂが被覆１２に過剰に食い込み、被覆１２が破れてしまう可能性がある。そのため、突出部２１ｂの高さは被覆１２の厚さの６３％（≒０．１２５ｍｍ／０．２ｍｍ）以下又は半分以下であることが好ましい。また、引張り力への耐性を考慮すると、被覆１２の厚さの２５％（=０．０５ｍｍ／０．２ｍｍ）以上であることが好ましい。なお、ここでの被覆１２の厚さとは、被覆接続部２１に接続される前（カシメによって厚さが変化する前）の被覆１２の厚さである。 Moreover, the thickness of the covering 12 of the electric wire 10 used this time is 0.2 mm. When determining the height of the protrusion 21b, it is necessary to consider the thickness of the covering 12. That is, if the height of the protruding portion 21b is too high, the protruding portion 21b may bite into the coating 12 and the coating 12 may be broken. Therefore, the height of the protrusion 21b is preferably 63% (≈0.125 mm / 0.2 mm) or less or half or less of the thickness of the coating 12. In consideration of resistance to tensile force, the thickness is preferably 25% (= 0.05 mm / 0.2 mm) or more of the thickness of the coating 12. In addition, the thickness of the coating | cover 12 here is the thickness of the coating | coated 12 before connecting to the coating | coated connection part 21 (before thickness changes by crimping).
　次に、図８及び図９を参照して、耐荷重性以外においても、溝部３１ｂよりも突出部２１ｂが優れていることを説明する。ここでは、本実施形態と比較例の条件を揃えるために、圧縮率（カシメ前の被覆１２の断面積に対するカシメ後の被覆１２の断面積）が同じ値となるようにして、高さ及び周長を比較した。本実施形態の圧着端子２０には突出部２１ｂが形成されているため、同じ圧縮率でも高さが高くなるので、比較例の圧着端子３０と比較して周長が長くなる。 Next, with reference to FIGS. 8 and 9, it will be described that the protruding portion 21b is superior to the groove portion 31b in addition to the load resistance. Here, in order to align the conditions of this embodiment and the comparative example, the compression ratio (the cross-sectional area of the coating 12 after caulking with respect to the cross-sectional area of the coating 12 before caulking) is the same value, and the height and circumference The lengths were compared. Since the protruding portion 21b is formed in the crimp terminal 20 of the present embodiment, the height is increased even with the same compression rate, and therefore the peripheral length is longer than that of the crimp terminal 30 of the comparative example.
　ここで、同じ圧縮率であれば、周長は長い方が好ましい。以下、その理由を説明する。図９は、被覆接続部２１をカシメる工程を示す図である。図９（ａ）の状態から周方向端部同士を近づけることで図９（ｂ）を経由して図９（ｃ）の状態となる。その後に更に圧着作業を進行させることで、図９（ｄ）の状態となる。ここで、周方向端部同士を接触させたときの被覆１２と被覆接続部２１の距離をクリアランスＬ１と称する。クリアランスＬ１が小さいほど、被覆接続部２１をカシメる際に周方向端部同士で被覆１２を噛み込み易くなる。被覆１２を噛み込んだ場合、被覆１２が破れる可能性があるため、クリアランスＬ１は大きい方が好ましい。 Here, if the compression ratio is the same, it is preferable that the circumference is long. The reason will be described below. FIG. 9 is a diagram illustrating a process of crimping the covering connection portion 21. By bringing the circumferential ends close to each other from the state shown in FIG. 9A, the state shown in FIG. 9C is obtained via FIG. 9B. Thereafter, by further proceeding with the crimping operation, the state shown in FIG. Here, the distance between the covering 12 and the covering connecting portion 21 when the circumferential ends are brought into contact with each other is referred to as a clearance L1. The smaller the clearance L1, the easier it is for the covering 12 to bite between the circumferential ends when the covering connecting portion 21 is crimped. Since the coating 12 may be broken when the coating 12 is bitten, the clearance L1 is preferably large.
　ここで、本実施形態の圧着端子２０は比較例の圧着端子３０と比較して周長が長いため、クリアランスＬ１が大きくなり易い。従って、被覆１２の噛込みを避けるという観点から考えても、本実施形態の方が比較例よりも優れている。 Here, since the crimp terminal 20 of the present embodiment has a longer circumference than the crimp terminal 30 of the comparative example, the clearance L1 tends to be large. Therefore, the present embodiment is superior to the comparative example from the viewpoint of avoiding the biting of the coating 12.
　以上に説明したように、上記実施形態の圧着端子２０は、端子接続部２３と、導体接続部２２と、被覆接続部２１と、を備える。端子接続部２３は、他の端子と接続される。導体接続部２２は、開放された部分を有しており、電線１０をセットして当該開放された部分を閉じることで当該電線１０の導体１１と接続される。被覆接続部２１は、開放された部分を有しており、電線１０をセットして当該開放された部分を閉じることで当該電線１０の被覆１２と接続される。被覆接続部２１の面のうち被覆１２と接続される面である接続面２１ａには、線状の突出部２１ｂが形成されている。また、突出部２１ｂの（突出）高さは、被覆１２の厚みの２５％以上６３％以下である。 As described above, the crimp terminal 20 of the above embodiment includes the terminal connection portion 23, the conductor connection portion 22, and the covering connection portion 21. The terminal connection part 23 is connected to other terminals. The conductor connection part 22 has an open part, and is connected to the conductor 11 of the electric wire 10 by setting the electric wire 10 and closing the open part. The covering connection portion 21 has an opened portion, and is connected to the covering 12 of the electric wire 10 by setting the electric wire 10 and closing the opened portion. A linear protrusion 21 b is formed on the connection surface 21 a which is a surface connected to the coating 12 among the surfaces of the coating connection portion 21. Further, the (projection) height of the protrusion 21 b is 25% or more and 63% or less of the thickness of the coating 12.
　これにより、圧着端子２０と電線１０とを接続することで被覆接続部２１の突出部２１ｂが電線１０の被覆１２に食い込むため、圧着端子２０と被覆１２とを強力に接続することができる。従って、電線１０に引張り力が掛かった場合でも電線１０が外れにくい構成のオープンバレル端子が実現できる。特に、突出部２１ｂが形成されているため、溝部３１ｂを形成する場合と同じ圧縮率を保ちつつ、被覆接続部２１の周方向の長さを長くすることができる。従って、被覆接続部２１を閉じる際の被覆１２の挟込みを防止できる。 Thereby, since the protruding portion 21b of the covering connection portion 21 bites into the sheath 12 of the electric wire 10 by connecting the crimp terminal 20 and the electric wire 10, the crimp terminal 20 and the sheath 12 can be strongly connected. Therefore, even when a tensile force is applied to the electric wire 10, an open barrel terminal having a configuration in which the electric wire 10 is difficult to come off can be realized. In particular, since the protruding portion 21b is formed, the length in the circumferential direction of the covering connection portion 21 can be increased while maintaining the same compression rate as that when the groove portion 31b is formed. Therefore, the covering 12 can be prevented from being caught when the covering connecting portion 21 is closed.
　また、上記実施形態の圧着端子２０において、突出部２１ｂは、被覆１２との接続時に当該突出部２１ｂの長手方向が被覆１２の周方向に沿うように形成されている。 Further, in the crimp terminal 20 of the above-described embodiment, the protruding portion 21 b is formed so that the longitudinal direction of the protruding portion 21 b is along the circumferential direction of the covering 12 when connected to the covering 12.
　これにより、電線１０に掛かる引張り力の向き（通常は電線１０の長手方向）に交差するように突出部２１ｂが形成されているため、電線１０の引張り力への耐性を一層向上させることができる。 Thereby, since the protrusion part 21b is formed so that it may cross | intersect the direction (normally the longitudinal direction of the electric wire 10) of the tensile force applied to the electric wire 10, the tolerance with respect to the tensile force of the electric wire 10 can be improved further. .
　また、上記実施形態の圧着端子２０において、被覆接続部２１を閉じるときに互いに近づく２つの端部を周方向端部と称したときに、突出部２１ｂは、被覆接続部２１の周方向端部を避けた位置に形成されている。 Moreover, in the crimp terminal 20 of the said embodiment, when the two edge parts which mutually approach when closing the coating | coated connection part 21 are called the circumferential direction edge part, the protrusion part 21b is the circumferential direction edge part of the coating | coated connection part 21. It is formed at a position that avoids.
　これにより、周方向端部に突出部２１ｂを形成しなくて良いため、被覆接続部２１の加工が容易となる。 Thereby, since it is not necessary to form the protruding portion 21b at the end portion in the circumferential direction, the covering connection portion 21 can be easily processed.
　また、上記実施形態の圧着端子２０において、被覆接続部２１には、突出部２１ｂが複数本形成される。 Further, in the crimp terminal 20 of the above-described embodiment, the covering connection portion 21 is formed with a plurality of protruding portions 21b.
　これにより、電線１０の引張りへの耐性を一層向上させることができる。 Thereby, the resistance to pulling of the electric wire 10 can be further improved.
　以上に本発明の好適な実施の形態を説明したが、上記の構成は例えば以下のように変更することができる。 Although a preferred embodiment of the present invention has been described above, the above configuration can be modified as follows, for example.
　上記実施形態では、接続面２１ａに突出部２１ｂが形成されていたが、接続面２１ａに突出部２１ｂと溝部３１ｂの両方が形成されていても良い。また、本実施形態では突出部２１ｂは円弧状に突出しているが、突出部２１ｂの形状は任意であり、矩形状に突出させても良い。また、導体接続部２２の接続面２２ａの形状は任意であり、凹部２２ｂが形成されていなくても良いし、他の形状の凹部又は凸部が形成されていても良い。 In the above embodiment, the protruding portion 21b is formed on the connection surface 21a, but both the protruding portion 21b and the groove portion 31b may be formed on the connecting surface 21a. Further, in the present embodiment, the protruding portion 21b protrudes in an arc shape, but the shape of the protruding portion 21b is arbitrary and may be protruded in a rectangular shape. Moreover, the shape of the connection surface 22a of the conductor connection part 22 is arbitrary, and the recessed part 22b may not be formed, and the recessed part or convex part of another shape may be formed.
　また、カシメる前の圧着端子２０の被覆接続部２１の形状は任意であり、略Ｕ字状に限られない。また、カシメる方法は任意であり、周方向端部同士が重なるようにカシメても良い。 Moreover, the shape of the covering connection portion 21 of the crimp terminal 20 before crimping is arbitrary and is not limited to a substantially U shape. Further, the caulking method is arbitrary, and the caulking may be performed so that the circumferential ends overlap each other.
　端子付き電線１は、例えば自動車に設置されるワイヤハーネスへの適用が想定されているが、様々な箇所のコネクタの一部として用いることができる。 The terminal-attached electric wire 1 is assumed to be applied to, for example, a wire harness installed in an automobile, but can be used as a part of connectors at various locations.
　１　端子付き電線
　１０　電線
　１１　導体
　１２　被覆
　２０　圧着端子
　２１　被覆接続部
　２１ａ　接続面
　２１ｂ　突出部
　２２　導体接続部
　２３　端子接続部 DESCRIPTION OF SYMBOLS 1 Electric wire with a terminal 10 Electric wire 11 Conductor 12 Covering 20 Crimp terminal 21 Covering connection part 21a Connection surface 21b Protrusion part 22 Conductor connection part 23 Terminal connection part

Claims (7)

  1. 　他の端子と接続される端子接続部と、
    　電線の導体と接続される導体接続部と、
    　前記電線の被覆と接続される被覆接続部と、
    を備え、
    　前記被覆接続部の面のうち前記被覆と接続される面である接続面には、線状の突出部が形成されており、
    　前記突出部の突出高さは、前記被覆の厚みの２５％以上６３％以下であることを特徴とする圧着端子。     A terminal connection to be connected to other terminals;
    A conductor connecting portion connected to the conductor of the electric wire;
    A sheath connecting portion connected to the sheath of the wire;
    With
    On the connection surface, which is a surface connected to the coating, of the surface of the coating connection portion, a linear protrusion is formed,
    The protruding height of the protruding portion is 25% or more and 63% or less of the thickness of the coating.
  2. 　請求項１に記載の圧着端子であって、
    　前記突出部は、前記被覆との接続時に当該突出部の長手方向が前記被覆の周方向に沿うように形成されていることを特徴とする圧着端子。     The crimp terminal according to claim 1,
    The crimp terminal, wherein the protrusion is formed so that a longitudinal direction of the protrusion is along a circumferential direction of the cover when connected to the cover.
  3. 　請求項２に記載の圧着端子であって、
    　前記被覆接続部に前記電線の被覆を接続するときに互いに近づく２つの端部を周方向端部と称したときに、
    　前記突出部は、前記被覆接続部の前記周方向端部を避けた位置に形成されていることを特徴とする圧着端子。     The crimp terminal according to claim 2,
    When the two ends approaching each other when connecting the sheath of the wire to the sheath connection portion are referred to as circumferential ends,
    The crimp terminal according to claim 1, wherein the protruding portion is formed at a position avoiding the circumferential end portion of the covering connection portion.
  4. 　請求項１に記載の圧着端子であって、
    　前記被覆接続部には、前記突出部が複数本形成されることを特徴とする圧着端子。     The crimp terminal according to claim 1,
    A crimp terminal having a plurality of the protruding portions formed on the covering connection portion.
  5. 　請求項１に記載の圧着端子であって、
    　少なくとも前記被覆接続部は、板材を加工することで形成されており、
    　前記突出部の突出高さは、前記板材の厚みの２０％以上５０％以下であることを特徴とする圧着端子。     The crimp terminal according to claim 1,
    At least the covering connection part is formed by processing a plate material,
    The protrusion height of the protrusion is 20% or more and 50% or less of the thickness of the plate member.
  6. 　電線と、
    　前記電線の導体及び被覆と接続される圧着端子と、
    を備え、
    　前記圧着端子は、
    　他の端子と接続される端子接続部と、
    　前記電線の前記導体と接続される導体接続部と、
    　前記電線の前記被覆と接続される被覆接続部と、
    を備え、
    　前記被覆接続部の面のうち前記被覆と接続される面である接続面には、線状の突出部が形成されており、
    　前記突出部の突出高さは、前記被覆の厚みの２５％以上６３％以下であることを特徴とする端子付き電線。     Electric wires,
    A crimp terminal connected to the conductor and covering of the wire;
    With
    The crimp terminal is
    A terminal connection to be connected to other terminals;
    A conductor connecting portion connected to the conductor of the electric wire;
    A sheath connecting portion connected to the sheath of the wire;
    With
    On the connection surface, which is a surface connected to the coating, of the surface of the coating connection portion, a linear protrusion is formed,
    The protruding height of the protruding portion is 25% or more and 63% or less of the thickness of the coating.
  7. 　請求項６に記載の端子付き電線であって、
    　前記突出部は、前記被覆の周方向に沿うように形成されていることを特徴とする端子付き電線。     It is an electric wire with a terminal according to claim 6,
    The protruding wire is formed so as to extend along a circumferential direction of the covering.
PCT/JP2016/004558 2015-10-27 2016-10-13 Crimp terminal and electric wire provided with terminal WO2017073026A1 (en)

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US11125201B2 (en) 2018-06-19 2021-09-21 Denso Corporation Ignition control system for internal combustion engine

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Publication number Priority date Publication date Assignee Title
JP7270939B2 (en) * 2019-03-28 2023-05-11 タツタ電線株式会社 Crimping terminal manufacturing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106667U (en) * 1990-02-21 1991-11-05
JP5654178B1 (en) * 2013-02-21 2015-01-14 古河電気工業株式会社 Wire harness, connection method of terminal and coated conductor, wire harness structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106667U (en) * 1990-02-21 1991-11-05
JP5654178B1 (en) * 2013-02-21 2015-01-14 古河電気工業株式会社 Wire harness, connection method of terminal and coated conductor, wire harness structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11125201B2 (en) 2018-06-19 2021-09-21 Denso Corporation Ignition control system for internal combustion engine

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