CN110829042A - Electric wire with terminal - Google Patents
Electric wire with terminal Download PDFInfo
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- CN110829042A CN110829042A CN201910690168.2A CN201910690168A CN110829042A CN 110829042 A CN110829042 A CN 110829042A CN 201910690168 A CN201910690168 A CN 201910690168A CN 110829042 A CN110829042 A CN 110829042A
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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
- H01R4/20—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 using a crimping sleeve
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
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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
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/12—End pieces terminating in an eye, hook, or fork
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Conductive Materials (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Insulated Conductors (AREA)
Abstract
The invention provides a terminal-equipped wire capable of reducing the resistance ratio between a conductor and a compression terminal. The terminal-equipped electric wire includes an electric wire having a conductor formed of one or more bare wires and a coating layer coated on the conductor, and a compression terminal mounted on an end of the conductor. The bare wire is formed of a first material containing aluminum as a main component. At least a portion of the compression terminal that contacts the exposed portion is formed of a second material containing aluminum as a main component. The tensile strength of the first material is greater than the tensile strength of the second material.
Description
Technical Field
The present invention relates to a terminal-equipped wire.
Background
Conventionally, the following terminal-equipped electric wire is known. The terminal-equipped wire includes a wire and a compression terminal. The electric wire includes a conductor and a coating layer. The conductor is formed of, for example, one bare wire. Bare wires are also referred to as single wires. The conductor is formed of, for example, a stranded wire obtained by twisting a plurality of bare wires. The coating layer covers the outer periphery of the conductor. At the end of the wire, the coating is removed, exposing the conductor. The exposed conductor is inserted into the compression terminal, and in this state, the compression terminal is compressed from the outside, whereby the compression terminal is mounted on the electric wire. Patent document 1 discloses such a terminal-equipped wire.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2010-244895
Disclosure of Invention
Problems to be solved by the invention
The ratio of the resistance value of the connection portion of the compression terminal to the resistance value of the wire is referred to as a resistance ratio. The resistance ratio of the terminal-equipped wire is required to be further reduced. An object of one embodiment of the present disclosure is to provide a terminal-equipped wire capable of reducing a resistance ratio.
Means for solving the problems
A terminal-equipped electric wire according to an embodiment of the present disclosure includes an electric wire including a conductor composed of one or more bare wires and a coating layer coated on an outer periphery of the conductor, and a compression terminal mounted on an end of the conductor; wherein the bare wire is formed of a first material containing aluminum as a main component, and at least a portion of the compression terminal that is in contact with the conductor is formed of a second material containing aluminum as a main component, wherein a tensile strength of the first material is greater than a tensile strength of the second material.
The resistance ratio of the terminal-equipped electric wire according to one embodiment of the present disclosure is small.
In addition, according to the terminal-equipped electric wire of one embodiment of the present disclosure, the contact resistance between the conductor and the compression terminal is small.
Drawings
Fig. 1 is a perspective view showing a structure of a terminal-equipped electric wire 1 in which a conductor 3 and a compression terminal 5 are separated from each other.
Fig. 2 is a cross-sectional view showing a cross section of the terminal-equipped electric wire 1 before compression in a cross section parallel to the axial direction of the conductor 3.
Fig. 3 is a cross-sectional view showing a cross section of the terminal-equipped electric wire 1 after compression in a cross section parallel to the axial direction of the conductor 3.
Fig. 4 is a graph showing the compressive deformation and the transition of the compressive stress of the conductor and the compressive terminal when the compressive stress is removed after the compressive stress is applied to the compressive terminal from the outer peripheral side when the tensile strength of the first material is greater than the tensile strength of the second material.
Fig. 5 is a graph showing the compressive deformation and the transition of the compressive stress of the conductor and the compressive terminal when the compressive stress is removed after the compressive stress is applied to the compressive terminal from the outer peripheral side when the tensile strength of the first material is smaller than the tensile strength of the second material.
Fig. 6 is an explanatory diagram showing a method of measuring the initial resistance ratio.
FIG. 7 is a graph showing the ratio R of the tensile strength difference to the initial resistanceratioGraph of the relationship between.
Description of the reference numerals
1 … terminal-carrying wire, 2 … wire, 3 … conductor, 4 … coating, 5 … compression terminal, 7 … contact, 9 … extension, 11 … bolt hole.
Detailed Description
For exemplary embodiments of the present disclosure, description is made with reference to the accompanying drawings.
1. Structure of electric wire with terminal
The terminal-equipped electric wire of the present disclosure includes an electric wire and a compression terminal. The electric wire includes a conductor and a coating layer. The conductor is formed of, for example, 1 bare wire. Bare wires are also referred to as single wires. The conductor is formed of, for example, a twisted wire obtained by twisting a plurality of bare wires. When the conductor is formed of a stranded wire, each bare wire constituting the stranded wire is generally formed of the same material.
The coating layer covers the outer periphery of the conductor. The coating layer is formed of an insulator. Examples of the insulator include resin and rubber. At the end of the wire, a part of the coating layer is removed to expose the conductor. Hereinafter, the exposed conductor is referred to as an exposed portion. The compression terminal is mounted on the exposed portion.
The terminal-equipped electric wire has the form shown in fig. 1, 2, and 3, for example. The terminal-equipped electric wire 1 includes an electric wire 2 and a compression terminal 5. The electric wire 2 includes a conductor 3 and a coating 4. The coating layer 4 covers the outer periphery of the conductor 3. The coating layer 4 is removed from the end of the wire 2 to expose the conductor 3. The conductor 3 shown in fig. 1, 2, and 3 corresponds to the exposed portion.
The compression terminal 5 includes a contact portion 7 and an extension portion 9. The compression terminal 5 is obtained by, for example, press-working one end side of a tube. The one end side corresponds to the extension portion 9. Alternatively, the compression terminal 5 is obtained by, for example, drilling one end side of a cylindrical base material and pressing the other end side. The one end side corresponds to the contact portion 7, and the other end corresponds to the extension portion 9.
The contact portion 7 has a cylindrical shape with one open side. The extending portion 9 is connected to an end portion of the contact portion 7 opposite to the opening side. The extension portion 9 has a plate-like shape to be mounted on a terminal block not shown. The extension portion 9 is formed with a bolt hole 11 for passing a bolt not shown.
The terminal-equipped electric wire 1 can be manufactured, for example, as follows. First, as shown in fig. 2, the end of the exposed conductor 3 is inserted into the contact portion 7. Next, a compressive stress is applied to the contact portion 7 from the outer peripheral side, and the contact portion 7 and the conductor 3 are compressed. This compressive stress is hereinafter referred to as the as-fabricated compressive stress. The direction of the compressive stress at the time of manufacturing is such that the contact portion 7 and the conductor 3 are reduced in the radial direction. Next, the manufacturing compressive stress was removed, and the terminal-equipped electric wire shown in fig. 3 was completed. In the completed terminal-equipped electric wire, the inner peripheral surface of the contact portion 7 is in contact with the outer peripheral surface of the conductor 3.
The above-described compression, for example, applies a predetermined pressure to the contact portion 7 using a compression tool, so that the contact portion 7 is compressively deformed. The compression deformation is plastic deformation. Preferably, the compression deformation is in a plurality of places. When the compression deformation is located at a plurality of positions, the characteristics of the terminal-equipped wire are further improved. Preferably, the plurality of compressed portions are set at positions spaced apart along the length of the conductor 3.
2. A first material and a second material
The bare wire constituting the conductor 3 is formed of a first material containing aluminum as a main component. The main component is a component that accounts for 50 mass% or more of the total mass. At least a portion of the compression terminal in contact with the exposed portion of the conductor 3 is formed of a second material containing aluminum as a main component. In the embodiment shown in fig. 1, 2 and 3, the contact portion 7 is formed of the second material.
The first material and the second material are not particularly limited, and examples thereof include pure aluminum and aluminum alloys.
Pure aluminum is a material formed of Al and inevitable impurities. The pure aluminum includes, for example, pure aluminum for electrical use (ECAl).
Examples of the aluminum alloy include the following Al-Fe-Zr and Al-Zr.
Al-Fe-Zr: an aluminum alloy containing 0.2 to 1.0 mass% of Fe (iron), 0.01 to 0.10 mass% of Zr (zirconium), 0.1 mass% or less of Si (silicon), 0.01 mass% or less of Cu (copper), 0.01 mass% or less of Mn (manganese), 0.01 mass% or less of Mg (magnesium), 0.01 mass% or less of Zn (zinc), 0.01 mass% or less of Ti (titanium), and 0.01 mass% or less of V (vanadium), with the balance being Al and unavoidable impurities.
Al-Zr: an aluminum alloy containing 0.03 to 1.5 mass% of Zr, 0.1 to 1.0 mass% of Fe and Si, and the balance being Al and unavoidable impurities.
In Al-Zr, "0.1 to 1.0 mass% of Fe and Si" means as follows. When both Fe and Si are contained, the total concentration of Fe and Si is 0.1 to 1.0 mass%. When Fe is contained and Si is not contained, the concentration of Fe is 0.1 to 1.0 mass%. When Si is contained but Fe is not contained, the concentration of Si is 0.1 to 1.0 mass%.
The tensile strength of the first material is greater than the tensile strength of the second material. The tensile strength of the first material was measured as follows. Test pieces were cut from bare wires constituting the conductors. The test piece was subjected to a tensile test by the method of JISZ2241, and the tensile strength was measured. In the tensile test, the test speed is 10%/min, and the punctuation distance is 200 mm.
The tensile strength of the second material was measured as follows. A2 mm × 2mm square bar-shaped test piece was cut out from the portion of the compression terminal that was in contact with the exposed portion. The test piece was subjected to a tensile test according to JISZ2241, and the tensile strength was measured. In the tensile test, the test speed is 10%/min, and the punctuation distance is 20 mm.
In the case where the conductor 3 is composed of a stranded wire, it is preferable that the plurality of bare wires are composed of the same material. The conductor 3 is made of, for example, a composite stranded wire. The composite stranded wire is formed by twisting a plurality of metal bare wires into a plurality of integrated stranded wires. In the case where the conductor 3 is formed of a composite twisted wire, the tensile strength of the bare metal wire constituting the conductor 3 is the same as the tensile strength of the conductor 3 and the tensile strength of the aggregate twisted wire.
In the conductor 3, the cross-sectional area of the portion where the compression terminal is attached is S1. The portion to which the compression terminal is attached is a compression-deformed portion. The cross-sectional area of the portion of the conductor to which the compression terminal is not attached is S2. The portion where the compression terminal is not attached is a portion where compression deformation does not occur. S1/S2 is preferably 0.5 to 0.95. When S1/S2 is within this range, the force with which the compression terminal holds the conductor becomes greater.
The terminal-equipped electric wire of the present disclosure can be used for applications such as buildings, wind power generation, railways, and vehicles.
3. Effects produced by the wire with terminal
In the terminal-equipped electric wire of the present disclosure, the contact resistance between the conductor and the compression terminal is small. In the terminal-equipped electric wire of the present disclosure, the initial resistance ratio of the conductor is particularly small. The initial resistance ratio is a resistance ratio of the terminal-equipped electric wire immediately after manufacture.
The resistance ratio of the terminal-equipped wire is preferably 100% or less. In addition, it is preferable to further reduce the contact resistance between the conductor and the compression terminal. The electric wire with terminal of the present disclosure can suppress the resistance ratio. This can suppress local overheating between the conductor and the contact terminal at the time of joining. As a result, disconnection of the electric wire and contact failure between the conductor and the compression terminal can be suppressed.
The reason why the resistance ratio of the terminal-equipped wire of the present disclosure is small is presumed as follows. Fig. 4 is a graph showing the compressive deformation of the conductor and the compression terminal and the transition of the compressive stress when the compressive stress is removed after the compressive stress is applied from the outer peripheral side of the compression terminal when the tensile strength of the first material is larger than the tensile strength of the second material.
In fig. 4, X1 represents a curve showing the compressive deformation of the conductor and the transition of the compressive stress when the compressive stress during manufacturing is removed after the compressive stress during manufacturing is applied from the outer peripheral side of the compression terminal when the tensile strength of the first material is larger than the tensile strength of the second material. A represents a point of compressive deformation and compressive stress of the conductor when the compressive stress during manufacturing is completely removed.
In fig. 4, Y1 shows a graph in which, when the tensile strength of the first material is greater than that of the second material, a compressive stress at the time of manufacturing is applied from the outer peripheral side of the compression terminal, and then the compressive deformation of the compression terminal and the transition of the compressive stress at the time of removing the compressive stress at the time of manufacturing are removed. B represents a point of compressive deformation and compressive stress of the compression terminal when the compressive stress at the time of manufacturing is completely removed.
The compression set at a is the same as the compression set at B. The compression deformation at a and B is the amount of strain at the time of rebound. In addition, the magnitude of the compressive stress at a is the same as the tensile stress at B.
When a compressive stress is applied during manufacturing, the compression terminal and the conductor are compressed. After the manufacturing compressive stress is completely removed, the compression terminal and the conductor are elastically restored due to the initial young's modulus. Since the tensile strength of the first material constituting the conductor is greater than the tensile strength of the second material constituting the connection portion of the compression terminal, the amount of elastic recovery of the conductor is greater than the amount of elastic recovery of the connection portion. Thus, a compressive stress is generated at a of the conductor. The compressive stress occurring in the conductor is a force pressing the compression terminal in a radial direction of the conductor. Tensile stress is generated at the compression terminal. The tensile stress corresponds to the compressive stress generated in the conductor. Therefore, when the compressive stress during manufacturing is completely removed, stress that presses the outer peripheral surface of the conductor and the inner peripheral surface of the compression terminal against each other is generated.
However, the resistance Rc at the contact point between the metals is represented by the following formula (1).
Formula (1) Rc ═ ρ/2r
In the formula (1), ρ is the resistivity of the metal. Further, r is a radius of a circle when the shape of the contact portion is assumed to be a single circle. r is represented by the following formula (2).
Formula (2) r ═ F/n ζ pi H1/2
In the formula (2), F represents a load applied between metals. n represents the number of actual contact portions. ζ represents a constant determined by the metal deformation mode. When elastically deformed, ζ is 0.3 or less. When elastic deformation and plastic deformation are mixed, ζ exceeds 0.3 and is 0.75 or less. In the case of plastic deformation, ζ exceeds 1.
As described above, when the tensile strength of the first material is greater than that of the second material, a load of mutual pressing is generated between the outer peripheral surface of the conductor and the inner peripheral surface of the compression terminal, and therefore F is large. As a result, the resistance Rc becomes small. Therefore, the resistance ratio of the terminal-equipped electric wire of the present disclosure becomes small.
Fig. 5 is a graph showing the compressive deformation of the conductor and the compression terminal and the transition of the compressive stress when the compressive stress during manufacturing is applied from the outer peripheral side of the compression terminal and then removed when the tensile strength of the first material is smaller than the tensile strength of the second material.
In fig. 5, X2 represents a curve showing the compressive deformation of the conductor and the transition of the compressive stress when the compressive stress during manufacturing is removed after the compressive stress during manufacturing is applied from the outer peripheral side of the compression terminal when the tensile strength of the first material is smaller than the tensile strength of the second material. C represents a point of compressive deformation and compressive stress of the conductor when the compressive stress at the time of manufacturing is completely removed.
In fig. 5, Y2 shows a graph of the compressive deformation of the compression terminal and the transition of the compressive stress when the compressive stress is removed after the compressive stress is applied from the outer peripheral side of the compression terminal when the tensile strength of the first material is smaller than the tensile strength of the second material. D represents a point of compressive deformation and compressive stress of the compression terminal when the compressive stress during manufacturing is completely removed.
When a compressive stress is applied during manufacturing, the compression terminal and the conductor are compressed. After the manufacturing compressive stress is completely removed, the compression terminal and the conductor are elastically restored due to the initial young's modulus. The tensile strength of the second material constituting the connecting portion of the compression terminal is greater than the tensile strength of the first material constituting the conductor. Therefore, no interaction force is generated between the compression terminal and the conductor.
The compression set at C is greater than the compression set at D. Therefore, when the compressive stress during manufacturing is completely removed, a gap due to elastic recovery exists between the outer peripheral surface of the conductor and the inner peripheral surface of the compression terminal. Therefore, when the compressive stress during the manufacturing is completely removed, a load of mutual pressing does not occur between the outer peripheral surface of the conductor and the inner peripheral surface of the compression terminal.
Therefore, when the tensile strength of the first material is smaller than that of the second material, F in the formula (2) is small and the resistance Rc is large.
The larger the difference between the tensile strength of the first material and the tensile strength of the second material, the smaller the contact resistance between the conductor and the compression terminal, and the smaller the resistance ratio. The difference between the tensile strength of the first material and the tensile strength of the second material is preferably 20MPa or more, and more preferably 30MPa or more.
When the difference between the tensile strength of the first material and the tensile strength of the second material is 20MPa or more, the change in the resistance ratio in the 150 ℃ electrical conduction test is smaller than that in the case of less than 20 MPa. The 150 ℃ energization test is a test in which energization is performed for 50 hours with the sample set at 150 ℃ at a current.
4. Examples of the embodiments
(4-1) production of electric wire with terminal
No.1 to No. 6 electric wires with terminals shown in Table 1 were produced. Each terminal-equipped wire has the form shown in fig. 1 and 2. The combinations of the first material and the second material in the respective terminal-equipped wires are shown in table 1. The respective terminal-equipped electric wires are the same except for the combination of the first material and the second material. In each terminal-equipped electric wire, all bare wires constituting the conductor are formed of the same material. The cross-sectional area of each conductor of the terminal-equipped wires was 200mm2. The diameter of the bare wire constituting the conductor was 0.45 mm. The number of bare wires was 1258.
The materials used for the first material and the second material are as follows.
ECAl: ECAl corresponding to A1070 was used.
Al-Fe-Zr: an aluminum alloy containing 0.6 mass% of Fe, 0.02 mass% of Zr, 0.06 mass% of Si, 0.002 mass% of Cu, 0.002 mass% of Mn, and 0.006 mass% in total of Ti and V, with the balance being Al.
Al-Zr: an aluminum alloy containing 0.34 mass% of Zr, 0.15 mass% of Fe, 0.1 mass% of Si, and 0.03 mass% in total of Ti and V, with the balance being Al.
TABLE 1
| No. | A second material | First material | Difference in tensile strength (MPa) | Initial resistance ratio (%) |
| 1 | ECAl | Al-Fe-Zr | -46 | 73 |
| 2 | ECAl | Al-Zr | -24 | 76 |
| 3 | Al-Fe-Zr | Al-Fe-Zr | -33 | 74 |
| 4 | Al-Fe-Zr | Al-Zr | -11 | 87 |
| 5 | Al-Zr | Al-Fe- |
60 | 118 |
| 6 | Al-Zr | Al-Zr | 82 | 142 |
(4-2) evaluation of electric wire with terminal
The tensile strength of the first material and the tensile strength of the second material were measured for each of the terminated electric wires. The measurement method is as described above. The tensile strength was measured using a tensile tester manufactured by Orientec corporation. Next, a difference (hereinafter referred to as a tensile strength difference) obtained by subtracting the tensile strength of the first material from the tensile strength of the second material is calculated. The calculated difference in tensile strength is shown in table 1 above.
Further, the initial resistance ratio was measured for each terminal-equipped wire. The method for measuring the initial resistance ratio is the method according to JISC 2805. The initial resistance ratio was measured by the 4-terminal method. The test body used for the measurement of the initial resistance ratio is shown in fig. 6.
The test body includes a conductor 3 in which a coating is removed from the electric wire 2 and compression terminals 5 mounted at both ends thereof.
For the whole test body, a constant current 1A was supplied. In this state, the resistance R between the point P and the point Q is measured. The point P is the most distal position in the contact portion between the conductor 3 and the compression terminal 5. The point Q is a position of the conductor 3 not in contact with the compression terminal 5. The point S is an end portion opposite to the point P in a contact portion between the conductor 3 and the compression terminal 5. The resistance was measured using a resistance meter manufactured by Nissan electric Co.
Initial resistance ratio RratioThe calculation is performed by the following formula (3).
Formula (3) Rratio＝{R-L2×α}/{L1×α}
In the formula (3), L1 is the distance between the point P and the point S, L2 is the distance between the point Q and the point S, α is the resistance per unit length of the conductor 3, α is a known value, α can be obtained by measurement in advance, or the resistance between L2 can be measured, and α can be calculated by dividing the resistance by the length between L2.
Calculated initial resistance ratio RratioShown in table 1 above. In addition, the ratio R of the tensile strength difference to the initial resistanceratioThe relationship between them is shown in fig. 7. In fig. 7, "ECAl terminal" indicates that the second material is ECAl. In addition, "Al-Fe-Zr termination" means that the second material is Al-Fe-Zr. In addition, "Al-Zr terminal" means that the second material is Al-Zr.
As shown in fig. 7, when the tensile strength difference is a negative value, the initial resistance ratio is decreased as compared with the case where the tensile strength difference is a positive value. When the electric wires with terminals having a negative tensile strength difference are compared with each other, the initial resistance ratio becomes smaller as the absolute value of the tensile strength difference becomes larger.
5. Other embodiments
While the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments, and various modifications may be made.
(1) The functions of 1 component in the above embodiments may be shared by a plurality of components, or the functions of a plurality of components may be exhibited by 1 component. Further, a part of the configuration of each of the above embodiments may be omitted. At least a part of the structure of each of the above embodiments may be added to or replaced with the structure of the other above embodiments. It should be noted that all the embodiments included in the technical idea that can be specified by the language described in the claims belong to the embodiments of the present disclosure.
(2) The present disclosure can be implemented in various forms, such as a system having the terminal-equipped wire as a component, a method for manufacturing the terminal-equipped wire, and a method for attaching a compression terminal to a wire, in addition to the terminal-equipped wire described above.
Claims (5)
1. A terminated electrical wire comprising:
an electric wire including a conductor composed of one or more bare wires and a coating layer covering an outer periphery of the conductor,
a compression terminal mounted at an end of the conductor;
the bare wire is formed of a first material having aluminum as a main component,
at least a portion of the compression terminal, which is in contact with the conductor, is formed of a second material containing aluminum as a main component,
wherein the tensile strength of the first material is greater than the tensile strength of the second material.
2. The terminal-equipped wire according to claim 1,
the first material is an aluminum alloy containing 0.2 to 1.0 mass% of Fe, 0.01 to 0.10 mass% of Zr, 0.1 mass% or less of Si, 0.01 mass% or less of Cu, 0.01 mass% or less of Mn, 0.01 mass% or less of Mg, 0.01 mass% or less of Zn, 0.01 mass% or less of Ti, and 0.01 mass% or less of V, with the balance being Al and unavoidable impurities,
the second material is pure aluminum formed of Al and inevitable impurities.
3. The terminal-equipped wire according to claim 1,
the first material is an aluminum alloy containing 0.03 to 1.5 mass% of Zr, 0.1 to 1.0 mass% of Fe and Si, and the balance being Al and unavoidable impurities,
the second material is pure aluminum formed from Al and unavoidable impurities.
4. The terminal-equipped wire according to claim 1,
the first material and the second material are each an aluminum alloy containing 0.2 to 1.0 mass% of Fe, 0.01 to 0.10 mass% of Zr, 0.1 mass% or less of Si, 0.01 mass% or less of Cu, 0.01 mass% or less of Mn, 0.01 mass% or less of Mg, 0.01 mass% or less of Zn, 0.01 mass% or less of Ti, and 0.01 mass% or less of V, with the balance being Al and unavoidable impurities.
5. The terminal-equipped electric wire according to any one of claims 1 to 4,
the tensile strength of the first material is greater than the tensile strength of the second material by 20MPa or more.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018152300A JP7228087B2 (en) | 2018-08-13 | 2018-08-13 | Wire with terminal |
| JP2018-152300 | 2018-08-13 |
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| Publication Number | Publication Date |
|---|---|
| CN110829042A true CN110829042A (en) | 2020-02-21 |
| CN110829042B CN110829042B (en) | 2023-06-30 |
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| EP (1) | EP3611800B1 (en) |
| JP (1) | JP7228087B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3912358A (en) * | 1973-06-19 | 1975-10-14 | Roger D Miller | Aluminum alloy compression type connectors for use with aluminum or copper conductors |
| CN103943164A (en) * | 2013-01-18 | 2014-07-23 | 日立金属株式会社 | Soft dilute-copper alloy insulated twisted wire and coil |
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| CN106716555A (en) * | 2014-09-22 | 2017-05-24 | 古河电气工业株式会社 | Terminal-equipped electrical wire |
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| JP2004200018A (en) | 2002-12-19 | 2004-07-15 | Hitachi Cable Ltd | Connector |
| JP4550791B2 (en) * | 2005-11-24 | 2010-09-22 | 古河電気工業株式会社 | Aluminum stranded wire crimp terminal and aluminum stranded wire terminal structure to which the crimp terminal is connected |
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| JP2010244895A (en) | 2009-04-07 | 2010-10-28 | Hitachi Cable Ltd | Compression connection terminal for aluminum conductors, and connection method thereof |
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| JP7125701B2 (en) | 2017-09-22 | 2022-08-25 | 矢崎総業株式会社 | Wire with terminal |
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2018
- 2018-08-13 JP JP2018152300A patent/JP7228087B2/en active Active
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2019
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| US3912358A (en) * | 1973-06-19 | 1975-10-14 | Roger D Miller | Aluminum alloy compression type connectors for use with aluminum or copper conductors |
| CN103943164A (en) * | 2013-01-18 | 2014-07-23 | 日立金属株式会社 | Soft dilute-copper alloy insulated twisted wire and coil |
| CN104781431A (en) * | 2013-03-29 | 2015-07-15 | 古河电器工业株式会社 | Aluminum alloy conductor, alum1inum alloy stranded wire, sheathed wire, wire harness, and method for manufacturing aluminum alloy conductor |
| CN106716555A (en) * | 2014-09-22 | 2017-05-24 | 古河电气工业株式会社 | Terminal-equipped electrical wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020027758A (en) | 2020-02-20 |
| EP3611800A1 (en) | 2020-02-19 |
| CN110829042B (en) | 2023-06-30 |
| EP3611800B1 (en) | 2022-02-16 |
| JP7228087B2 (en) | 2023-02-24 |
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