WO2013021602A1 - Terminal crimped wire - Google Patents

Terminal crimped wire Download PDF

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Publication number
WO2013021602A1
WO2013021602A1 PCT/JP2012/004946 JP2012004946W WO2013021602A1 WO 2013021602 A1 WO2013021602 A1 WO 2013021602A1 JP 2012004946 W JP2012004946 W JP 2012004946W WO 2013021602 A1 WO2013021602 A1 WO 2013021602A1
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WO
WIPO (PCT)
Prior art keywords
swage
terminal
core part
swaged
core
Prior art date
Application number
PCT/JP2012/004946
Other languages
French (fr)
Inventor
Fumie Hino
Original Assignee
Yazaki Corporation
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 Yazaki Corporation filed Critical Yazaki Corporation
Priority to CN201280038893.8A priority Critical patent/CN103891048B/en
Publication of WO2013021602A1 publication Critical patent/WO2013021602A1/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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • 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
    • H01R4/183—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 for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—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 for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • 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
    • H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26

Definitions

  • the present invention relates to a terminal crimped wire.
  • a terminal crimped wire including a core part formed by a plurality of conductors and a coat part coating an outer periphery of the core part, in which a wire barrel as a swage part of a terminal is swaged to the core part exposed from the coat part for conduction of electricity (for example, see Patent Literature 1).
  • the core part formed by a plurality of conductors is sandwiched by a pair of jigs to provide ultrasonic vibration, thereby forming a roughened area with a roughened surface. Then, the wire barrel is swaged to the roughened area to strip a coating film such as an oxide film and bring newly formed surfaces of the core part into contact with each other, thereby reducing electrical resistance between the wire and the terminal.
  • a coating film such as an oxide film
  • the core part is formed by a plurality of conductors, and the swage part of the terminal is swaged to the core part.
  • the core part is formed by a plurality of conductors as described above, there are gaps between the individual conductors, and thus when the core part is swaged by the swage part, contact pressure applied to the swage part is lessened.
  • the swage part of the terminal has portions under a higher contact pressure and portions under a lower contact pressure. It is therefore difficult to secure a sufficient contact pressure to the swage part because creep occurs at, in particular, the portions under higher contact pressure to reduce contact pressure, due to changes in environment with high temperatures or low temperatures.
  • the present invention has been made in view of the aforementioned problem, and is intended to provide a terminal crimped wire that suppresses occurrence of creep at the core part formed by one conductor.
  • a terminal crimped wire including a core part formed by one conductor and a coat part coating an outer periphery of the core part, in which a swage part of a terminal is swaged to the core part exposed from the coat part for conduction of electricity, and an outer peripheral shape of the core part before being swaged by the swage part of the terminal, is made approximately identical to an inner peripheral shape of the swage part after the core part is swaged by the swage part.
  • the outer peripheral shape of the core part before being swaged by the swage part of the terminal is made approximately identical to the inner peripheral shape of the swage part after the core part is swaged by the swage part, thereby to equalize contact pressure on the swage part at swaging of the swage part to the core part. This makes it possible to suppress occurrence of creep at the core part and decrease portions under a lower contact pressure.
  • the foregoing terminal crimped wire can suppress occurrence of creep at the core part formed by one conductor and suppress increase of a contact resistance.
  • an outer peripheral diameter of the core part before being swaged by the swage part of the terminal is set to be larger than an inner peripheral diameter of the swage part after the core part is swaged by the swage part.
  • the outer peripheral diameter of the core part before being swaged by the swage part of the terminal is set to be larger than the inner peripheral diameter of the swage part after the core part is swaged by the swage part, which achieves reliable contact between the core part and the entire swage part. Accordingly, it is possible to suppress occurrence of creep at the core part and suppress increase in contact resistance at the swage part.
  • the swage part has a pair of sandwich parts sandwiching the core part with ends in contact with each other, and the core part is provided with a concave in which the ends of the pair of sandwich parts are to be placed.
  • the core part is provided with the concave in which the ends of the pair of sandwich parts are to be placed, and whereby it is possible to lessen rise in contact pressure on a portion under a highest contact pressure of the swage part in which the ends of the pair of sandwich parts are to be placed, thereby to equalize contact pressure on the swage part.
  • FIG. 1 is a cross-section view of a terminal crimped wire before swaging of a terminal according to an embodiment of the present invention.
  • FIG. 2 is a cross-section view of the terminal crimped wire with a terminal swaged according to the embodiment of the present invention.
  • FIG. 3A is a perspective view of the terminal crimped wire before swaging of a terminal according to the embodiment of the present invention.
  • FIG. 3B is a perspective view of the terminal crimped wire with the terminal swaged according to the embodiment of the present invention.
  • FIG. 4 is a perspective view of the terminal crimped wire before processing according to the embodiment of the present invention.
  • FIG. 5 is a perspective view of the terminal crimped wire under processing according to the embodiment of the present invention.
  • FIG. 1 is a cross-section view of a terminal crimped wire before swaging of a terminal according to an embodiment of the present invention.
  • FIG. 2 is a cross-section view of the terminal crimped
  • FIG. 6A is a side view of other example of a concave in the terminal crimped wire according to the embodiment of the present invention.
  • FIG. 6B is a side view of other example of a concave in the terminal crimped wire according to the embodiment of the present invention.
  • a terminal crimped wire according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6B.
  • a terminal crimped wire 1 includes a core part 3 formed by one conductor and a coat part 5 coating an outer periphery of the core part 3, and the terminal crimped wire 1 is brought into conduction by swaging a swage part 9 of a terminal 7 to the core part 3 exposed from the coat part 5.
  • an outer peripheral shape of the core part 3 before being swaged by the swage part 9 of the terminal 7, is made approximately identical to an inner peripheral shape of the swage part 9 after the core part 3 is swaged by the swage part 9.
  • an outer peripheral diameter of the core part 3 before being swaged by the swage part 9 of the terminal 7, is set to be larger than an inner peripheral diameter of the swage part 9 after the core part 3 is swaged by the swage part 9.
  • the swage part 9 has a pair of sandwich parts 11 and 13 sandwiching the core part 3 with ends in contact with each other, and the core part 3 is provided with a concave 15 in which the ends of the pair of sandwich parts 11 and 13 are to be placed.
  • the terminal 7 brought into conduction by the terminal crimped wire 1 includes a contact part 17 and the swage part 9.
  • the contact part 17 is formed by a rectangular cylindrical female die into which a tub of a male terminal (not shown) as the other terminal at the other end is inserted to make electrical connection between the other terminal and the terminal 7.
  • the swage part 9 is integrated into the contact part 17.
  • the swage part 9 is formed by a bottom wall 19 and the pair of sandwich parts 11 and 13.
  • the bottom wall 19 is formed by one member continuous with the contact part 17, and is extended along a longitudinal side of the terminal 7.
  • the bottom wall 19 is disposed on a lower surface side of the core part 3 of the terminal crimped wire 1, and is provided with the pair of sandwich parts 11 and 13 on both sides in a width direction.
  • the pair of sandwich parts 11 and 13 is formed by one member continuous with the bottom wall 19 and the contact part 17 on the both sides in a width direction, respectively.
  • the pair of sandwich parts 11 and 13 is swaged to an end of the terminal crimped wire 1 in which the coat part 5 is stripped off by a jig with upper and lower portions (not shown) or the like and the core part 3 is exposed, thereby to establish electrical connection between the terminal 7 and the terminal crimped wire 1.
  • the terminal crimped wire 1 includes the core part 3 and the coat part 5.
  • the core part 3 is formed by one conductor made of a conductive material such as aluminum and aluminum alloy.
  • the core part 3 has the coat part 5 integrated on the outer periphery thereof.
  • the coat part 5 is made of an insulating material such as synthetic resin, and is integrated with the core part 3 so as to coat the outer periphery of the core part 3.
  • the coat part 5 is stripped off to expose the core part 3, and the swage part 9 of the terminal 7 is swaged to the exposed core part 3.
  • the core part 3 swaged by the swage part 9 is sandwiched by a pair of forming dies 21 and 23 before being swaged by the swage part 9, thereby to form an outer peripheral shape as shown in FIG. 5.
  • the thus formed outer peripheral shape of the core part 3 shown in FIG. 1 is approximately identical to the inner peripheral shape of the swage part 9 when the swage part 9 is swaged to the core part 3 as shown in FIG. 2.
  • a dotted line in the core part 3 shown in FIG. 1 constitutes the inner peripheral diameter of the swage part 9 when the swage part 9 is swaged to the core part 3, and the outer peripheral diameter of the core part 3 is set to be larger than the inner peripheral diameter of the swage part 9.
  • the larger outer peripheral diameter of the core part 3 constitutes a process margin at swaging of the swage part 9.
  • a portion at which the ends of the pair of sandwich parts 11 and 13 are located forms the concave 15.
  • contact pressure becomes lower on a part A where the ends of the pair of sandwich parts 11 and 13 contact, a part B on the bottom wall 19 opposed to the part A, and a part C which is side portions of the pair of sandwich parts 11 and 13, in this order. Due to differences in contact pressure, if creep occurs at the swage part 9 swaging the core part 3, contact pressure is decreased in particular on the parts A and B to be under a high contact pressure, and therefore a sufficient contact pressure cannot be secured on the swage part 9, thereby increasing a contact resistance between the terminal 7 and the terminal crimped wire 1.
  • the outer peripheral shape of the core part 3 is made approximately identical to the inner peripheral shape of the swage part 9 when the swage part 9 is swaged, a load of swaging the swage part 9 to the core part 3 is applied to a center of the core part 3, thereby to equalize contact pressure on the swage part 9.
  • providing the core part 3 with the concave 15 makes it possible to lessen rise in contact pressure on the part A to be under highest contact pressure. Therefore, the contact pressure is equalized on the swage part 9, which makes it possible to suppress occurrence of creep at the swage part 9 swaging the core part 3 to decrease portions under lower contact pressure and suppress increase in contact resistance.
  • the shape of the concave 15 is not limited to the shape shown in FIG. 1 and others, but may be the shape of a concave 15a, a concave 15b or the like as shown in FIGS. 6A and 6B, for example.
  • the concave 15 may be formed in any shape as far as the shape makes it possible to accept the ends of the pair of sandwich parts 11 and 13 and lessen rise in contact pressure.
  • the coat part 5 is stripped off at a predetermined position to expose the core part 3.
  • the exposed core part 3 is sandwiched by the pair of forming dies 21 and 23 to make the outer peripheral shape of the core part 3 approximately identical to the outer peripheral shape of the core part 3 swaged by the swage part 9, and make the outer peripheral diameter of the core part 3 larger than the outer peripheral diameter of the core part 3 swaged by the swage part 9.
  • the pair of sandwich parts 11 and 13 is swaged to the processed core part 3 so as to compress the core part 3 from the outer periphery side to the central side by a jig or the like, thereby establishing continuity between the terminal 7 and the terminal crimped wire 1.
  • the outer peripheral shape of the core part 3 before being swaged by the swage part 9 of the terminal 7 is made approximately identical to the inner peripheral shape of the swage part 9 after the core part 3 is swaged by the swage part 9, and therefore contact pressure on the swage part 9 is equalized at swaging of the swage part 9 to the core part 3, which makes it possible to suppress occurrence of creep at the core part 3 and decrease portions under lower contact pressure.
  • the outer peripheral diameter of the core part 3 before being swaged by the swage part 9 of the terminal 7 is set to be larger than the inner peripheral diameter of the swage part 9 after the core part 3 is swaged by the swage part 9, which achieves reliable contact between the core part 3 and the entire swage part 9. This makes it possible to suppress occurrence of creep at the core part 3 and suppress increase in contact resistance at the swage part 9.
  • the core part 3 is provided with the concave 15 in which the ends of the pair of sandwich parts 11 and 13 are to be placed, and whereby it is possible to lessen rise in contact pressure on a portion of the swage part 9 in which the ends of the pair of sandwich parts 11 and 13 are under highest contact pressure, thereby further equalizing contact pressure on the swage part 9.
  • the crimped terminal is a female terminal with a cylindrical contact part.
  • the crimped terminal may be a male terminal with a tub-shaped contact part.
  • the terminal is provided with only the swage part swaged to the core part.
  • the present invention is not limited to the foregoing arrangement, but the terminal may be provided with not only the swage part but also a coat swage part to swage the coat part and stabilize fixation of the terminal with the terminal crimped wire.

Abstract

A terminal crimped wire (1) includes a core part (3) formed by one conductor and a coat part (5) coating an outer periphery of the core part, in which a swage part (9) of a terminal (7) is swaged to the core part exposed from the coat part for conduction of electricity. An outer peripheral shape of the core part before being swaged by the swage part of the terminal, is made approximately identical to an inner peripheral shape of the swage part after the core part is swaged by the swage part.

Description

TERMINAL CRIMPED WIRE
The present invention relates to a terminal crimped wire.
Conventionally, there is known a terminal crimped wire including a core part formed by a plurality of conductors and a coat part coating an outer periphery of the core part, in which a wire barrel as a swage part of a terminal is swaged to the core part exposed from the coat part for conduction of electricity (for example, see Patent Literature 1).
In the terminal crimped wire, the core part formed by a plurality of conductors is sandwiched by a pair of jigs to provide ultrasonic vibration, thereby forming a roughened area with a roughened surface. Then, the wire barrel is swaged to the roughened area to strip a coating film such as an oxide film and bring newly formed surfaces of the core part into contact with each other, thereby reducing electrical resistance between the wire and the terminal.
Japanese Patent Application Laid-Open Publication No. 2011-82127
In the foregoing terminal crimped wire, the core part is formed by a plurality of conductors, and the swage part of the terminal is swaged to the core part. When the core part is formed by a plurality of conductors as described above, there are gaps between the individual conductors, and thus when the core part is swaged by the swage part, contact pressure applied to the swage part is lessened.
However, if the core part is formed by one conductor, when the core part is swaged by the swage part, a load applied to the swage part is less prone to be distributed. Accordingly, the swage part of the terminal has portions under a higher contact pressure and portions under a lower contact pressure. It is therefore difficult to secure a sufficient contact pressure to the swage part because creep occurs at, in particular, the portions under higher contact pressure to reduce contact pressure, due to changes in environment with high temperatures or low temperatures.
Accordingly, the present invention has been made in view of the aforementioned problem, and is intended to provide a terminal crimped wire that suppresses occurrence of creep at the core part formed by one conductor.
According to an aspect of the present invention, there is provided a terminal crimped wire including a core part formed by one conductor and a coat part coating an outer periphery of the core part, in which a swage part of a terminal is swaged to the core part exposed from the coat part for conduction of electricity, and an outer peripheral shape of the core part before being swaged by the swage part of the terminal, is made approximately identical to an inner peripheral shape of the swage part after the core part is swaged by the swage part.
In the terminal crimped wire, the outer peripheral shape of the core part before being swaged by the swage part of the terminal, is made approximately identical to the inner peripheral shape of the swage part after the core part is swaged by the swage part, thereby to equalize contact pressure on the swage part at swaging of the swage part to the core part. This makes it possible to suppress occurrence of creep at the core part and decrease portions under a lower contact pressure.
Therefore, the foregoing terminal crimped wire can suppress occurrence of creep at the core part formed by one conductor and suppress increase of a contact resistance.
According to an aspect of the present invention, an outer peripheral diameter of the core part before being swaged by the swage part of the terminal, is set to be larger than an inner peripheral diameter of the swage part after the core part is swaged by the swage part.
In the terminal crimped wire, the outer peripheral diameter of the core part before being swaged by the swage part of the terminal, is set to be larger than the inner peripheral diameter of the swage part after the core part is swaged by the swage part, which achieves reliable contact between the core part and the entire swage part. Accordingly, it is possible to suppress occurrence of creep at the core part and suppress increase in contact resistance at the swage part.
According to an aspect of the present invention, the swage part has a pair of sandwich parts sandwiching the core part with ends in contact with each other, and the core part is provided with a concave in which the ends of the pair of sandwich parts are to be placed.
In the terminal crimped wire, the core part is provided with the concave in which the ends of the pair of sandwich parts are to be placed, and whereby it is possible to lessen rise in contact pressure on a portion under a highest contact pressure of the swage part in which the ends of the pair of sandwich parts are to be placed, thereby to equalize contact pressure on the swage part.
According to the present invention, it is possible to produce advantageous effects of providing a terminal crimped wire that suppresses occurrence of creep at the core part formed by one conductor.
FIG. 1 is a cross-section view of a terminal crimped wire before swaging of a terminal according to an embodiment of the present invention. FIG. 2 is a cross-section view of the terminal crimped wire with a terminal swaged according to the embodiment of the present invention. FIG. 3A is a perspective view of the terminal crimped wire before swaging of a terminal according to the embodiment of the present invention. FIG. 3B is a perspective view of the terminal crimped wire with the terminal swaged according to the embodiment of the present invention. FIG. 4 is a perspective view of the terminal crimped wire before processing according to the embodiment of the present invention. FIG. 5 is a perspective view of the terminal crimped wire under processing according to the embodiment of the present invention. FIG. 6A is a side view of other example of a concave in the terminal crimped wire according to the embodiment of the present invention. FIG. 6B is a side view of other example of a concave in the terminal crimped wire according to the embodiment of the present invention.
A terminal crimped wire according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6B.
A terminal crimped wire 1 according to the embodiment includes a core part 3 formed by one conductor and a coat part 5 coating an outer periphery of the core part 3, and the terminal crimped wire 1 is brought into conduction by swaging a swage part 9 of a terminal 7 to the core part 3 exposed from the coat part 5.
In addition, an outer peripheral shape of the core part 3 before being swaged by the swage part 9 of the terminal 7, is made approximately identical to an inner peripheral shape of the swage part 9 after the core part 3 is swaged by the swage part 9.
Further, an outer peripheral diameter of the core part 3 before being swaged by the swage part 9 of the terminal 7, is set to be larger than an inner peripheral diameter of the swage part 9 after the core part 3 is swaged by the swage part 9.
Moreover, the swage part 9 has a pair of sandwich parts 11 and 13 sandwiching the core part 3 with ends in contact with each other, and the core part 3 is provided with a concave 15 in which the ends of the pair of sandwich parts 11 and 13 are to be placed.
As shown in FIGS. 3A and 3B, the terminal 7 brought into conduction by the terminal crimped wire 1 includes a contact part 17 and the swage part 9. The contact part 17 is formed by a rectangular cylindrical female die into which a tub of a male terminal (not shown) as the other terminal at the other end is inserted to make electrical connection between the other terminal and the terminal 7. The swage part 9 is integrated into the contact part 17.
The swage part 9 is formed by a bottom wall 19 and the pair of sandwich parts 11 and 13. The bottom wall 19 is formed by one member continuous with the contact part 17, and is extended along a longitudinal side of the terminal 7. The bottom wall 19 is disposed on a lower surface side of the core part 3 of the terminal crimped wire 1, and is provided with the pair of sandwich parts 11 and 13 on both sides in a width direction.
The pair of sandwich parts 11 and 13 is formed by one member continuous with the bottom wall 19 and the contact part 17 on the both sides in a width direction, respectively. The pair of sandwich parts 11 and 13 is swaged to an end of the terminal crimped wire 1 in which the coat part 5 is stripped off by a jig with upper and lower portions (not shown) or the like and the core part 3 is exposed, thereby to establish electrical connection between the terminal 7 and the terminal crimped wire 1.
As shown in FIGS. 1 to 6B, the terminal crimped wire 1 includes the core part 3 and the coat part 5. The core part 3 is formed by one conductor made of a conductive material such as aluminum and aluminum alloy. The core part 3 has the coat part 5 integrated on the outer periphery thereof.
The coat part 5 is made of an insulating material such as synthetic resin, and is integrated with the core part 3 so as to coat the outer periphery of the core part 3. The coat part 5 is stripped off to expose the core part 3, and the swage part 9 of the terminal 7 is swaged to the exposed core part 3.
The core part 3 swaged by the swage part 9 is sandwiched by a pair of forming dies 21 and 23 before being swaged by the swage part 9, thereby to form an outer peripheral shape as shown in FIG. 5.
The thus formed outer peripheral shape of the core part 3 shown in FIG. 1 is approximately identical to the inner peripheral shape of the swage part 9 when the swage part 9 is swaged to the core part 3 as shown in FIG. 2. In addition, a dotted line in the core part 3 shown in FIG. 1 constitutes the inner peripheral diameter of the swage part 9 when the swage part 9 is swaged to the core part 3, and the outer peripheral diameter of the core part 3 is set to be larger than the inner peripheral diameter of the swage part 9. The larger outer peripheral diameter of the core part 3 constitutes a process margin at swaging of the swage part 9. Further, when the core part 3 is swaged by the swage part 9, a portion at which the ends of the pair of sandwich parts 11 and 13 are located forms the concave 15.
Here, when the swage part 9 is swaged to the normal unprocessed core part 3, as shown in FIG. 2, contact pressure becomes lower on a part A where the ends of the pair of sandwich parts 11 and 13 contact, a part B on the bottom wall 19 opposed to the part A, and a part C which is side portions of the pair of sandwich parts 11 and 13, in this order. Due to differences in contact pressure, if creep occurs at the swage part 9 swaging the core part 3, contact pressure is decreased in particular on the parts A and B to be under a high contact pressure, and therefore a sufficient contact pressure cannot be secured on the swage part 9, thereby increasing a contact resistance between the terminal 7 and the terminal crimped wire 1.
Accordingly, when the outer peripheral shape of the core part 3 is made approximately identical to the inner peripheral shape of the swage part 9 when the swage part 9 is swaged, a load of swaging the swage part 9 to the core part 3 is applied to a center of the core part 3, thereby to equalize contact pressure on the swage part 9. In addition, providing the core part 3 with the concave 15 makes it possible to lessen rise in contact pressure on the part A to be under highest contact pressure. Therefore, the contact pressure is equalized on the swage part 9, which makes it possible to suppress occurrence of creep at the swage part 9 swaging the core part 3 to decrease portions under lower contact pressure and suppress increase in contact resistance.
The shape of the concave 15 is not limited to the shape shown in FIG. 1 and others, but may be the shape of a concave 15a, a concave 15b or the like as shown in FIGS. 6A and 6B, for example. The concave 15 may be formed in any shape as far as the shape makes it possible to accept the ends of the pair of sandwich parts 11 and 13 and lessen rise in contact pressure.
In the thus configured terminal crimped wire 1, first, the coat part 5 is stripped off at a predetermined position to expose the core part 3. Next, the exposed core part 3 is sandwiched by the pair of forming dies 21 and 23 to make the outer peripheral shape of the core part 3 approximately identical to the outer peripheral shape of the core part 3 swaged by the swage part 9, and make the outer peripheral diameter of the core part 3 larger than the outer peripheral diameter of the core part 3 swaged by the swage part 9. Then, the pair of sandwich parts 11 and 13 is swaged to the processed core part 3 so as to compress the core part 3 from the outer periphery side to the central side by a jig or the like, thereby establishing continuity between the terminal 7 and the terminal crimped wire 1.
In the foregoing terminal crimped wire 1, the outer peripheral shape of the core part 3 before being swaged by the swage part 9 of the terminal 7, is made approximately identical to the inner peripheral shape of the swage part 9 after the core part 3 is swaged by the swage part 9, and therefore contact pressure on the swage part 9 is equalized at swaging of the swage part 9 to the core part 3, which makes it possible to suppress occurrence of creep at the core part 3 and decrease portions under lower contact pressure.
Therefore, in the foregoing terminal crimped wire 1, it is possible to suppress occurrence of creep at the core part 3 formed by one conductor and suppress increase in contact resistance.
In addition, the outer peripheral diameter of the core part 3 before being swaged by the swage part 9 of the terminal 7, is set to be larger than the inner peripheral diameter of the swage part 9 after the core part 3 is swaged by the swage part 9, which achieves reliable contact between the core part 3 and the entire swage part 9. This makes it possible to suppress occurrence of creep at the core part 3 and suppress increase in contact resistance at the swage part 9.
Further, the core part 3 is provided with the concave 15 in which the ends of the pair of sandwich parts 11 and 13 are to be placed, and whereby it is possible to lessen rise in contact pressure on a portion of the swage part 9 in which the ends of the pair of sandwich parts 11 and 13 are under highest contact pressure, thereby further equalizing contact pressure on the swage part 9.
In the terminal crimped wire according to the embodiment of the present invention, the crimped terminal is a female terminal with a cylindrical contact part. Alternatively, the crimped terminal may be a male terminal with a tub-shaped contact part.
In addition, the terminal is provided with only the swage part swaged to the core part. However, the present invention is not limited to the foregoing arrangement, but the terminal may be provided with not only the swage part but also a coat swage part to swage the coat part and stabilize fixation of the terminal with the terminal crimped wire.
1 terminal crimped wire
3 core part
5 coat part
7 terminal
9 swage part
11, 13 pair of sandwich parts
15, 15a, 15b concave

Claims (3)

  1. A terminal crimped wire comprising:
    a core part formed by one conductor; and
    a coat part coating an outer periphery of the core part, wherein
    a swage part of a terminal is swaged to the core part exposed from the coat part for conduction of electricity, and
    an outer peripheral shape of the core part before being swaged by the swage part of the terminal, is made approximately identical to an inner peripheral shape of the swage part after the core part is swaged by the swage part.
  2. The terminal crimped wire according to claim 1, wherein
    an outer peripheral diameter of the core part before being swaged by the swage part of the terminal, is set to be larger than an inner peripheral diameter of the swage part after the core part is swaged by the swage part.
  3. The terminal crimped wire according to claim 1 or 2, wherein
    the swage part has a pair of sandwich parts sandwiching the core part with ends in contact with each other, and the core part is provided with a concave in which the ends of the pair of sandwich parts are to be placed.
PCT/JP2012/004946 2011-08-08 2012-08-03 Terminal crimped wire WO2013021602A1 (en)

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JP2011173014A JP5902414B2 (en) 2011-08-08 2011-08-08 Manufacturing method of terminal crimped wire
JP2011-173014 2011-08-08

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Publication number Priority date Publication date Assignee Title
JP6536368B2 (en) * 2015-11-12 2019-07-03 住友電装株式会社 Method of manufacturing metal wire strip member including joint portion, method of manufacturing metal wire strip member with terminal, and metal wire strip member including joint portion
JP2019204653A (en) * 2018-05-23 2019-11-28 株式会社オートネットワーク技術研究所 Electric wire with terminal

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EP2086056A2 (en) * 2008-01-24 2009-08-05 Yazaki Corporation Crimping terminal
JP2011082127A (en) 2008-11-19 2011-04-21 Autonetworks Technologies Ltd Electric wire with terminal connector, and manufacturing method of electric wire with terminal connector
US20110177727A1 (en) * 2010-01-18 2011-07-21 Weiping Zhao Aluminum conductor and conductive terminal connection

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DE19549174A1 (en) * 1995-10-28 1997-07-03 Bosch Gmbh Robert Contact element with crimp section
JP2002198155A (en) * 2000-10-18 2002-07-12 Yazaki Corp Connection method and connection structure of cable
JP2010212023A (en) * 2009-03-09 2010-09-24 Toyota Motor Corp Connection structure for electric wire
JP5904355B2 (en) * 2011-08-02 2016-04-13 矢崎総業株式会社 Single-core wire terminal crimping structure

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EP2086056A2 (en) * 2008-01-24 2009-08-05 Yazaki Corporation Crimping terminal
JP2011082127A (en) 2008-11-19 2011-04-21 Autonetworks Technologies Ltd Electric wire with terminal connector, and manufacturing method of electric wire with terminal connector
US20110177727A1 (en) * 2010-01-18 2011-07-21 Weiping Zhao Aluminum conductor and conductive terminal connection

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JP2013037886A (en) 2013-02-21
JP5902414B2 (en) 2016-04-13
CN103891048A (en) 2014-06-25
CN103891048B (en) 2016-10-12

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