WO2016017012A1 - 端子接続構造およびその製造方法 - Google Patents
端子接続構造およびその製造方法 Download PDFInfo
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- WO2016017012A1 WO2016017012A1 PCT/JP2014/070260 JP2014070260W WO2016017012A1 WO 2016017012 A1 WO2016017012 A1 WO 2016017012A1 JP 2014070260 W JP2014070260 W JP 2014070260W WO 2016017012 A1 WO2016017012 A1 WO 2016017012A1
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- terminal
- electric wire
- terminal piece
- wire
- end portion
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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
- H01R4/02—Soldered or welded connections
- H01R4/023—Soldered or welded connections between cables or wires and terminals
- H01R4/024—Soldered or welded connections between cables or wires and terminals comprising preapplied solder
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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
- H01R4/625—Soldered or welded connections
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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
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
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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
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0235—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for applying solder
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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
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
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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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
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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
- H01R2101/00—One pole
Definitions
- the present invention relates to an aluminum wire connecting terminal and a manufacturing method thereof.
- soldering is an excellent method with high bonding reliability because the whole connecting portion can be firmly connected when connecting a large number of aluminum wires.
- the copper alloy terminal has a low thermal conductivity, so even if the terminal is heated by soldering, the aluminum wire inside the terminal is at the required temperature.
- flux and molten solder are difficult to be introduced into the entire inside of the terminal.
- voids are easily formed in the solder or portions that are not soldered are easily formed, and the reliability of electrical joining is lowered.
- Voids are undesirable because they cause discharge, galvanic corrosion, increased electrical resistance, and heat generation during energization.
- air and moisture are present inside the void, and this kind of intervention makes it difficult to conduct heat and lowers the joining reliability.
- the terminal and the end of the electric wire are caulked and compressed with a large force in order to reduce the void and improve the heat conduction, the electric wire may be damaged, and it may cause a disconnection.
- Patent Document 1 discloses a technique of a connection terminal that ultrasonically joins an aluminum electric wire and a copper terminal using an ultrasonic horn chip
- Patent Document 2 discloses an aluminum battledore unit body.
- a technique of a terminal fitting provided with an integral pipe-like conductor connecting portion, inserting a stranded conductor into the conductor connecting portion, and having a dissimilar metal layer that is a different metal from aluminum on the bottom surface of the vane plate body is disclosed.
- JP 2007-12329 A Japanese Patent Laid-Open No. 09-204947
- the terminal junction structure at the end of the wire in FIG. 11 will be described.
- the terminal 11 includes a cylindrical terminal main portion 11a and a flat terminal piece 11b coupled to the terminal main portion 11a.
- the terminal piece 11b has a terminal hole 11c.
- the electric wire 12 is obtained by twisting together a large number of aluminum strands, and the enamel insulating coating is removed from the end 12a.
- the wire end portion 12a is inserted into the terminal main portion 11a and is exposed on the terminal piece 11b outside the terminal main portion 11a.
- a plurality of linear heat transfer members 13 are inserted into the wire end portion 12a with appropriate mutual intervals.
- the heat transfer member 13 forms a high heat path for introducing solder in the wire end portion 12a during soldering.
- the first and second electrodes 14a and 14b are disposed radially outward of the terminal main portion 11a
- the third and fourth electrodes 15a and 15b are disposed radially outward of the terminal piece 11b. These are arranged opposite to each other.
- the first and second electrodes 14a and 14b are moved from the above arrangement positions in the directions indicated by the arrows and pressed against the terminal main portion 11a from both sides thereof, thereby the terminal main portion 11a. Is sandwiched between the first and second electrodes 14a and 14b.
- the third and fourth electrodes 15a and 15b are moved from the arrangement position in the direction indicated by the arrow and pressed against the terminal piece 11b and the wire end 12a from both sides, Thus, the terminal piece 11b and the wire end portion 12a are sandwiched between the third and fourth electrodes 15a and 15b.
- the end portion 12a1 has the third electrode.
- the end 12a2 is not pressed inside the terminal piece 11b by 15a, and the end 12a2 is pressed inside the terminal piece 11b by the third electrode 15a.
- the main object of the present invention is to provide a terminal connection structure having no sharp steps as described above and a method of manufacturing such a terminal connection structure by improving the shape of the third electrode.
- the terminal connection structure according to the present invention is a terminal connection structure in which the end portion of the electric wire is exposed and soldered on the flat plate-shaped terminal piece coupled to the tip end side from the inside of the terminal main portion.
- the shape of the electric wire end portion in a side view is a shape compressed at the first end portion into a gently curved shape close to the terminal piece side toward the second end portion side.
- the side view shape of the end of the electric wire exposed on the terminal piece is compressed into a gently curved surface close to the terminal piece side toward the second end side at the first end. Therefore, even if stress is applied between the first and second end portions, the stress is dispersed, and the end portion of the electric wire is cut off at the location exposed on the terminal piece from the terminal main portion. Therefore, a mechanically reliable terminal connection structure can be provided.
- the inclination angle ⁇ of the intermediate portion in the longitudinal direction of the first end portion is 20 to 70 ° on the upper side, which is the side farther from the soldering surface to which the wire end portion on the terminal piece is soldered. It is.
- the soldering surface to which the end portion of the electric wire on the terminal piece is soldered has a concave portion having a gently inclined side wall surface.
- the recess is preferably provided with a protrusion that promotes heat conduction between the wire end and the terminal piece, or a protrusion around which the wire end is wound.
- a pair of regulating walls that regulate the spread of the end portion of the electric wire on the soldering surface are provided on both side edges of the soldering surface to be soldered of the terminal piece.
- the method for manufacturing a terminal connection structure according to the present invention is a method for manufacturing a terminal connection structure in which an end portion of an electric wire is exposed and soldered onto a flat terminal piece continuous from the inner side of the terminal main portion to the tip end side thereof. And heating the terminal piece and the wire end by passing a current between the terminal piece and a wire end exposed on the terminal piece while pressing a pair of electrodes from both sides in the radial direction. And a step of introducing a flux onto the inner side of the terminal main part and the terminal piece in the heated state, and then introducing solder, and the radial direction of the electrode pressing the end of the wire of the two electrodes
- the terminal main portion side edge of the inner end is formed into a curved surface shape or a tapered surface shape.
- the terminal main part side edge of the inner end in the radial direction of the electrode pressing the wire end of both electrodes is formed into a curved surface shape or a tapered surface shape.
- the end of the electric wire exposed on the terminal piece has a shape in a side view of the first end. It is pressed in a shape compressed into a gently curved surface so as to approach the terminal piece side toward the side.
- a current is passed between the first and second electrodes in a state where a pair of first and second electrodes are pressed against the terminal main portion from both sides in the radial direction. Heating the wire end inside the terminal main portion.
- Another aspect of the present invention includes the step of inserting a plurality of heat transfer members made of metal having a linear shape at the end of the electric wire and having a higher thermal conductivity than the end of the electric wire.
- the surface of the terminal piece to which the end portion of the wire is soldered is provided with a concave portion having a gently inclined side wall surface, and the terminal piece of the two electrodes is provided.
- the pressing electrode presses the terminal piece portion at a position where the concave portion is removed on the side opposite to the terminal main portion.
- a pair of restricting walls are provided on both side edges of the terminal piece, and the step is executed by restricting the spread of the end portion of the electric wire exposed to the terminal piece by the pair of restricting walls.
- FIG. 2 is a sectional view taken along line II-II in FIG. It is a principal part expanded sectional view of FIG. It is the same top view.
- FIG. 3 is a sectional view taken along line III-III in FIG. 1. It is sectional drawing of the state which inserted the electric wire in the terminal main part. It is a top view which shows the state by which the electric wire edge part is controlled by the control wall of a terminal piece. It is a top view which shows the expansion state of the electric wire edge part in case a terminal piece does not have a control wall.
- FIG. 1 is a cross-sectional view illustrating a problem to be solved by the present invention in a state where first to fourth electrodes are not pressed against a terminal main portion, a terminal piece, and the like. It is sectional drawing in the state which has pressed the terminal main part, the terminal piece, etc. to the 1st thru
- the terminal 11 in the terminal connection structure will be described with reference to FIGS. 1 to 3A to 3C.
- the terminal 11 includes a cylindrical terminal main portion 11a and a flat terminal piece 11b coupled to the tip end side thereof, and is made of copper, brass, another copper alloy, or a copper-based composite material.
- the terminal piece 11b has a terminal hole 11c.
- the terminal 11 has a metal plating layer (not shown) such as tin or solder formed on at least the inner surface of the terminal main portion 11a.
- a concave portion 11e is formed on the soldering surface 11d, which is the upper surface of the terminal piece 11b, and a pair of regulating walls 11f are provided on both side edges of the soldering surface 11d.
- the side wall surface 11g of the concave portion 11e has a gentle inclined surface as shown in an enlarged view in FIG. 3A.
- the side wall surface 11g may be a more gentle inclined surface as necessary.
- the concave portion 11e acts as a flux pool and a solder pool when the wire end portion 12a is soldered on the soldering surface 11d of the terminal piece 11b, thereby improving the soldering.
- the width of the recess 11e in the direction perpendicular to the longitudinal direction C is approximately the same as the entire width of the wire end 12a, and the length is shorter than the width.
- the depth of the recess 11e is about 1 ⁇ 2 of the thickness of the terminal piece 11b.
- each protrusion 110 has an elongated shape extending in the longitudinal direction C that is the axial direction.
- the protruding end surface of the protrusion 110 is positioned flush with or slightly above or below the soldering surface 11d, which is the upper surface of the terminal piece 11b.
- a part of the wire end portion 12a passes between the protrusions 110 and 110.
- the protrusion 110 increases the contact area between the wire end 12a and the terminal piece 11b, promotes heat conduction between the two ends 12a and 11b, and can uniformly heat the inside of the wire end 12a. Good soldering.
- the tip surface of the protrusion 110 approaches the electrode 15a, heat transfer from the electrode 15a is improved, which is particularly effective when an aluminum electric wire having a lower thermal conductivity than copper is used. Note that the protrusion 110 may not be provided.
- the regulation wall 11f rises in the direction of the soldering surface 11d so that the spread of the wire end 12a can be regulated as shown in FIGS. 5A and 5B. In order to perform this regulation effectively, it is preferable to place the regulation wall 11f on the side of the recess 11e.
- an electric wire 12 made of aluminum, copper, or the like is attached from one side opening of the terminal main portion 11a, and the end portion 12a on the tip side is inside the terminal main portion 11a. And it solders on the soldering surface 11d which is the upper surface of the terminal piece 11b.
- the electric wire 12 is composed of a stranded wire in which a large number of aluminum strands are twisted together.
- the end portion of the stranded wire has the enamel insulation coating removed.
- the stranded wire has been previously removed at places where the enamel insulation coating needs to be removed.
- the present invention is not limited to a stranded wire, and includes an assembly line in which a plurality of wires are simply assembled.
- a plurality of linear heat transfer members 13 are inserted in parallel to the longitudinal direction C of the wire end portion 12a at a predetermined interval in the wire end portion 12a inside the terminal main portion 11a.
- the heat transfer member 13 is inserted in a wire shape so as to form a high heat path in the wire end 12a during soldering, and solder (not shown) is introduced into the inserted terminal main part 11a via the high heat path. Is done.
- the heat transfer member 13 also has a function of promoting the flow of solder and flux in the wire end portion 12a.
- a plurality of heat transfer members 13 may be inserted into the wire end portion 12a, or only one may be inserted.
- the heat transfer member 13 is made of, for example, copper, which is a metal having higher thermal conductivity than the wire end portion 12a, and a metal plating layer of, for example, tin or solder having a thickness of about 6 to 10 ⁇ m is formed on the surface of the material.
- a high heat path is more easily formed by melting a metal plating layer (not shown) on the surface of the terminal 11 due to the high heat applied to the terminal 11 during soldering and also melting the metal plating layer on the surface of the heat transfer body 13. It is like that.
- the wire end portion 12a is aligned along the regulation wall 11f without spreading by the pair of regulation walls 11f on the soldering surface 11d of the terminal piece 11b. Without the regulating wall 11f, as shown in FIG. 5B, the wire end portion 12a spreads on the soldering surface 11d, so that the soldering cannot be performed satisfactorily.
- the wire end portion 12a is inserted through the terminal main portion 11a and exposed on the terminal piece 11b outside the terminal main portion 11a.
- the pair of first and second electrodes 14a and 14b are disposed opposite to the terminal main portion 11a in the radial direction, and the terminal piece 11b is formed outside the terminal main portion 11a.
- a pair of third and fourth electrodes 15a and 15b are disposed opposite to the electric wire end 12a in the radially outward direction.
- each of the first, second electrodes 14a, 14b and the fourth electrode 15b has a cubic shape
- the third electrode 15a has a radially inner end as shown in FIG. 7A.
- the edge on the terminal main portion 11a side has a predetermined curved surface shape that bulges toward the terminal main portion 11a.
- the third electrode 15a extends from the terminal main portion 11a in a direction orthogonal to the soldering surface 11d of the terminal piece 11b, that is, in a direction orthogonal to the longitudinal direction C.
- a curved surface S3 that gently curves with a large curvature radius.
- the shape of the curved surface S3 includes a shape that changes exponentially or parabolically in addition to the partial cylindrical surface.
- the third electrode 15a may be configured such that the side surface S1 is eliminated and the entire surface facing the wire end portion 12a is a curved curved surface S4.
- a flat tapered surface S5 may be used as shown in FIG. 7D. Even in the case of the flat tapered surface S5, the electric wire portion pressed against the tapered surface S5 becomes a curved surface by the spring back.
- the terminal main portion 11a is held between the first and second electrodes 14a and 14b by pressing the first and second electrodes 14a and 14b from both sides in the radial direction against the terminal main portion 11a.
- a current is passed between the first and second electrodes 14a and 14b to heat the terminal main portion 11a.
- the edge 15a1 on the terminal main portion 11a side at the radially inner end of the third electrode 15a is the curved surface S3 or the tapered surface S5
- the wire end portion 12a is connected to the vicinity of the terminal main portion 11a.
- the first end portion 12a1 and the second end portion 12a2 on the distal end side far from the terminal main portion 11a are divided, the first end portion 12a1 is directed toward the second end portion 12a2, that is, toward the distal end side.
- the shape is a gentle curve or taper so as to be close to the terminal piece 11b.
- the third and fourth electrodes 15a and 15b are pressed against the wire end 12a on the terminal piece 11b and soldered, the first end 12a1 of the wire end 12a is connected to the third electrode 15a.
- the second end 12a2 is not pressed against the soldering surface 11d by the third electrode 15a without being pressed against the soldering surface 11d inside the terminal piece 11b.
- the rear end edge 121 that is the uppermost portion on the upper side (the side far from the terminal piece 11) of the curved first end portion 12a1 of the electric wire end portion 12a and the portion where the straight line portion starts after the bending ends.
- the ratio between the rear end edge 122 of the two end portions 12a2 is gently inclined, and the ratio L / H between the longitudinal dimension L between the rear end edges 121 and 122 and the height difference H thereof is 0. It is 4 to 2.8, preferably 0.7 to 2.5, and more preferably 1.0 to 2.0.
- the three ranges of the ratio L / H are expressed by an inclination angle ⁇ with respect to the longitudinal direction C of the longitudinal middle portion 12m of the first end portion 12a1, it is 20 to 70 °, preferably 20 to 55 °, and more preferably 25. ⁇ 45 °.
- the inclination angle ⁇ is 70 ° or more, the first end portion 12a1 becomes a sharp curved surface, and the wire end portion 12a is easily damaged.
- the inclination angle ⁇ is less than 20 °, the first end portion 12a1 is It becomes too long, leading to an increase in the size of the terminal connection structure.
- the portion of the terminal piece 11b having no recess 11e is pressed from both sides with the wire end 12a sandwiched therebetween, so the second end 12a2 of the wire end 12a. While a sufficient amount of current flows through the side to be heated, the temperature in the recess 11e does not need to be raised and the heat is gradually transferred. The heat accumulated in the recess 11e gradually evaporates by this heat, and the solder introduced from the second end 12a2 to the first end 12a1 is sufficiently introduced into the end of the electric wire and soldered.
- the wire end portion 12a outside the terminal main portion 11a does not cause a sharp difference in height between the first end portion 12a1 and the second end portion 12a2.
- the wire end portion 12a can be soldered and connected to the soldering surface 11d of the terminal piece 11b with high reliability.
- the heat transfer member 13 is substantially parallel to the stranded wire of the wire end 12a in the wire end 12a.
- the flux is sucked into the wire end portion 12a by the capillary phenomenon due to the gap around the heat transfer portion 13. Thereby, the flux acts on the surface of the wire end portion 12a, and the oxide film formed on the surface of the wire end portion 12a is removed.
- the introduced molten solder is guided to the heat transfer portion 13 and flows into the electric wire end portion 12a, like the flux. Thereby, solder spreads inside the terminal main part 11a, and connects the stranded wires in the electric wire end part 12a and the electric wire end part 12a and the terminal main part 11a.
- the flux acts on the surface of the wire end portion 12a inside the terminal main portion 11a, and the molten solder comes into contact with the wire end portion 12a from which the oxide film has been removed by the flux. No good soldering part is formed.
- FIG. 9 shows the terminal joint structure of the wire end after soldering without electrodes.
- FIG. 9 shows a terminal connection structure after the electrodes are removed after soldering in FIG.
- FIGS. 10A to 10C show other embodiments.
- a protrusion 112 is provided at the center of the recess 11 e, and the second end 12 a 2 of the wire end 12 a is wound around the protrusion 112.
- a recess 130 is formed in the bottom surface of the upper third electrode 15a so that the tip of the protrusion 112 enters, and the second end 12a2 is pushed into the recess 11e by the third electrode 15a, and the solder collected in the recess 11e. Is firmly joined to the terminal 11.
- a plurality of protrusions 112 may be provided.
- the wire end portion 12a may be divided into two in the width direction perpendicular to the longitudinal direction C and wound around the protrusion 112. Thereby, the inside of the electric wire end part 12a is heated uniformly.
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Abstract
Description
11a 端子主部
11b 端子片
11d 半田付け面
11e 凹部
11g 側壁面
11f 規制壁
12 電線
12a 電線端部
12a1 第1端部
12a2 第2端部
13 熱伝達部材
14a 第1電極
14b 第2電極
15a 第3電極(電線端部を押し付ける電極)
15b 第4電極(電線端部を押し付ける電極)
110 熱伝導促進用の突起
112 巻き付け用の突起
S3,S4 湾曲面
S5 テーパ面
θ 傾斜角度
Claims (11)
- 電線端部が端子主部内側からこれの先端側に連成する平板状の端子片上へ露出して半田付けされている端子接続構造であって、
前記端子主部から前記端子片上へ露出する電線端部を、前記端子主部近傍の第1端部側と、前記端子主部から遠い第2端部側とに分けたとき、
当該電線端部の側面視形状が、前記第1端部において、前記第2端部側に向かって端子片側に近接する緩やかな曲面状に圧縮された形状となっている、
電線端部の端子接合構造。 - 前記端子片上の前記電線端部が半田付けされる半田付け面から遠い側となる上側において、前記第1端部の長手方向中間部の傾斜角度θが20~70°である、請求項1に記載の構造。
- 前記端子片上の前記電線端部が半田付けされる半田付け面に、側壁面がなだらかな傾斜面になっている凹部を有する、請求項1または2に記載の構造。
- 前記凹部に、前記電線端部と端子片間の熱伝導を促進する突起が設けられている、請求項3に記載の構造。
- 前記凹部に、前記電線端部が巻き付けられる突起が設けられている、請求項3に記載の構造。
- 前記端子片の半田付けされる半田付け面の両側縁それぞれに、前記半田付け面上の前記電線端部の広がりを規制する一対の規制壁を有する、請求項1~5のいずれか一項に記載の構造。
- 電線端部が端子主部内側からこれの先端側に連成する平板状の端子片上へ露出して半田付けされている端子接続構造の製造方法であって、
前記端子片とこの端子片上に露出する電線端部とに半径方向両側から一対の電極を押し付けた状態で当該両電極間に電流を流して、前記端子片および前記電線端部を加熱するステップと、
前記加熱状態で前記端子主部内側と前記端子片上にフラックスと半田とを導入するステップと、を含み、
前記両電極のうちの前記電線端部を押し付ける電極の半径方向内端の端子主部側縁部を湾曲面形状またはテーパ面形状にする、端子接続構造の製造方法。 - 前記端子主部に半径方向両側から別の一対の電極を押し付けた状態で該別の一対の電極間に電流を流して、前記端子主部および該端子主部内側の電線端部を加熱するステップを含む、請求項7に記載の製造方法。
- 前記電線端部に線状をなし、かつ前記電線端部よりも熱伝導率が高い金属からなる複数の熱伝達部材を挿入するステップを含む、請求項7または8に記載の方法。
- 前記端子片における前記電線端部が半田付けされる半田付け面に、なだらかな傾斜をなしている凹部を設けると共に、前記両電極のうちの前記端子片を押し付ける電極が、前記凹部を前記端子主部と反対側で外した位置の前記端子片部分を押し付けた状態で、前記ステップを実行する、請求項7ないし9のいずれか一項に記載の方法。
- 前記端子片両側縁に一対の規制壁を設け、この一対の規制壁により当該端子片に露出する電線端部の広がりを規制して、前記ステップを実行する、請求項7ないし10のいずれか一項に記載の方法。
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DE112014006851.9T DE112014006851T5 (de) | 2014-07-31 | 2014-07-31 | Anschlusselementverbindungsstruktur und Verfahren zum Herstellen derselben |
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JP6989605B2 (ja) * | 2017-06-21 | 2022-01-05 | 古河電気工業株式会社 | 電線接続構造体 |
JP6648100B2 (ja) * | 2017-12-27 | 2020-02-14 | 本田技研工業株式会社 | 導電端子、導電端子の製造装置、及び導電端子を備えた回転電機 |
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