WO2011052548A1 - 圧着端子 - Google Patents

圧着端子 Download PDF

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Publication number
WO2011052548A1
WO2011052548A1 PCT/JP2010/068881 JP2010068881W WO2011052548A1 WO 2011052548 A1 WO2011052548 A1 WO 2011052548A1 JP 2010068881 W JP2010068881 W JP 2010068881W WO 2011052548 A1 WO2011052548 A1 WO 2011052548A1
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WO
WIPO (PCT)
Prior art keywords
conductor
bottom plate
conductor crimping
crimping
crimp
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2010/068881
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English (en)
French (fr)
Inventor
竜也 遠藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yazaki Corp
Original Assignee
Yazaki Corp
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 Corp filed Critical Yazaki Corp
Priority to EP10826680A priority Critical patent/EP2495813A4/en
Priority to CN2010800488015A priority patent/CN102598414A/zh
Priority to US13/504,292 priority patent/US9054431B2/en
Publication of WO2011052548A1 publication Critical patent/WO2011052548A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01R4/183—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
    • H01R4/185—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 combined with a U-shaped insulation-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
    • 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
    • H01R4/188—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 having an uneven wire-receiving surface to improve the contact
    • 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
    • H01R4/203—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 having an uneven wire-receiving surface to improve the contact
    • 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
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • 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
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • the present invention relates to an open barrel type crimp terminal having a conductor crimping portion having a substantially U-shaped cross section used for, for example, an automobile electrical system.
  • FIG. 3 is a perspective view showing a configuration of a conventional crimp terminal described in Patent Document 1, for example.
  • the crimp terminal 100 includes an electrical connection portion 101 connected to a terminal on the mating connector side (not shown) at the front portion in the longitudinal direction of the terminal (which is also the longitudinal direction of the conductor of the wire to be connected).
  • a conductor crimping portion 110 that is crimped to an exposed conductor of a terminal (not shown) is provided, and further, a covering crimping portion 120 that is crimped to a portion of the electric wire with an insulation coating is provided.
  • a first connecting portion 105 that connects between the electrical connecting portion 101 and the conductor crimping portion 110 is provided, and a second connecting between them is provided between the conductor crimping portion 110 and the covering crimping portion 120.
  • the connection part 106 is provided.
  • the conductor crimping portion 110 includes a bottom plate 111 and a pair of conductor crimping pieces 112, 112 that are upwardly extended from both left and right side edges of the bottom plate 111 and are crimped so as to wrap the conductor of the electric wires disposed on the inner surface of the bottom plate 111.
  • the cover crimping portion 120 wraps so as to wrap the bottom plate 121 and electric wires (that is, portions with an insulating coating) that extend upward from the left and right side edges of the bottom plate 121 and are arranged on the inner surface of the bottom plate 121.
  • a pair of covering crimping pieces 122 and 122 to be tightened form a substantially U-shaped cross section.
  • first connecting portion 105 and the second connecting portion 106 before and after the conductor crimping portion 110 are both a bottom plate 105A, 106A and a low-profile side plate 105B that stands up from the left and right side edges of the bottom plates 105A, 106A. , 106B, and a substantially U-shaped cross section.
  • the bottom plate in the range from the bottom plate (not shown) of the front electrical connection portion 101 to the last cover crimping portion 120 that is, the bottom plate 105A of the first connecting portion 105, the bottom plate 111 of the conductor crimping portion 110,
  • the bottom plate 106A of the second connecting portion 106 and the bottom plate 121 of the cover crimping portion 120 are continuously formed in a single strip shape.
  • the front and rear ends of the low-profile side plate 105B of the first connecting portion 105 are the lower half portions of the rear end of the side plate (reference number omitted) of the electrical connection portion 101 and the front end of the conductor crimping piece 112 of the conductor crimping portion 110.
  • the front and rear ends of the low-side side plate 106B of the second connecting portion 106 are the rear end of the conductor crimping piece 112 of the conductor crimping portion 110 and the front end of the covering crimping piece 122 of the covering crimping portion 120, respectively.
  • Each lower half is continuous.
  • a plurality of recessed groove-shaped serrations 118 extending in a direction orthogonal to the longitudinal direction of the conductor of the electric wire (that is, the terminal longitudinal direction) are provided.
  • the crimp terminal 100 In order to crimp the conductor crimping portion 110 of the crimp terminal 100 to the conductor at the end of the electric wire, the crimp terminal 100 is placed on a mounting surface (that is, the upper surface) of a lower mold (that is, an anvil) (not shown), The terminal conductor is inserted between the conductor crimping pieces 112 of the conductor crimping portion 110 and placed on the upper surface of the bottom plate 111. Then, by lowering the upper mold (that is, the crimper) relative to the lower mold, the leading end side of the conductor crimping piece 112 is gradually tilted inward on the guide slope of the upper mold.
  • the tip of the conductor crimping piece 112 is formed with a curved surface extending from the upper guide slope to the central chevron.
  • the conductor crimping piece 112 is crimped so as to enclose the conductor by rolling it back to the conductor side and biting into the conductor while rubbing the tips of the conductor crimping pieces 112.
  • the conductor crimping part 110 of the crimp terminal 100 can be connected to the conductor of the electric wire by crimping.
  • the covering crimping portion 120 is also bent gradually inward using the lower mold and the upper mold, and the covering crimping piece 122 is applied to the portion of the electric wire with the insulation coating. Tighten. By doing so, the crimp terminal 100 can be electrically and mechanically connected to the electric wire.
  • the present invention suppresses the spring back of the conductor crimping piece and can easily achieve both electrical connection performance and mechanical connection performance when connecting the wire and the terminal.
  • the purpose is to provide.
  • an electrical connection portion is provided at the front portion in the terminal longitudinal direction, and the rear end portion of the terminal of the electric wire via the first connection portion.
  • a conductor crimping portion connected by crimping to the conductor is provided, and a covering crimping portion is provided at the rear portion via a second connecting portion, and the conductor crimping portion includes a bottom plate and left and right side edges of the bottom plate.
  • a pair of conductor crimping pieces that extend upward from the base plate and are crimped so as to wrap the conductor disposed on the inner surface of the bottom plate, and are formed in a substantially U-shaped cross section.
  • the two connecting portions are both formed in a substantially U-shaped cross section by a bottom plate and a low-profile side plate standing upward from the left and right side edges of the bottom plate, and the bottom plate of the conductor crimping portion and the first and second And a bottom plate of the conductor crimping portion of the conductor crimping portion and the first and second portions of the conductor crimping portion.
  • a crimp terminal is provided.
  • the crimp terminal of (1) is provided with a plurality of protrusions spaced in the front-rear direction in a region of the inner surface of the conductor crimping piece that is in close contact with the conductor of the wire during crimping. .
  • the crimp terminal of (1) is provided with the protrusions on the inner surfaces of the side plates of the first connecting portion and the second connecting portion.
  • the projection is provided at an arbitrary position in a range from the inner surface of the conductor crimping piece of the conductor crimping portion to the inner surface of the side plate of the connecting portion. Due to the work hardening and the rib effect due to the protrusions, it is possible to increase the rigidity of the portion where the protrusions are provided and the surrounding area. Therefore, when a protrusion is provided on the inner surface of the conductor crimping piece, the springback after the crimping of the conductor crimping piece can be suppressed by increasing the rigidity of the conductor crimping piece due to the presence of the protrusion itself.
  • the increased restraining force of the conductor in the area sandwiched between the front and rear protrusions increases the effect of suppressing the deviation between the conductor core wires, maintaining a more stable electrical contact state. become able to.
  • the protrusions are provided on the inner surfaces of the side plates of the first connecting portion and the second connecting portion as in the crimp terminal of (3) above, the protrusions are formed on the inner surface of the side plate of the connecting portion.
  • the rigidity of the connecting portion is increased, and accordingly, the spring back of the conductor crimping piece is suppressed. Therefore, even if the conductor crimping piece has no protrusion, the rigidity of the conductor crimping piece can be substantially increased, and a more stable electrical contact state can be maintained.
  • FIGS. 1A to 1C are configuration diagrams of a crimp terminal according to a first embodiment of the present invention.
  • FIG. 1A is a developed plan view of the crimp terminal
  • FIG. ) Is a cross-sectional view taken along the line AA of FIG. 1
  • FIG. FIGS. 2A to 2D are configuration diagrams of a crimp terminal according to a second embodiment of the present invention.
  • FIG. 2A is a developed plan view of the crimp terminal
  • FIG. 2B is a plan view of FIG. BB cross-sectional view of FIG. 2B
  • FIG. 2C is a partial perspective view showing a state after crimping of the conductor crimping portion of the crimp terminal
  • FIG. 2D is a CC arrow view of FIG. It is sectional drawing.
  • FIG. 3 is a perspective view showing a configuration of a conventional crimp terminal.
  • the side connected to the mating connector is referred to as the front
  • the side connected to the electric wire is referred to as the rear.
  • FIGS. 1A to 1C are configuration diagrams of the crimp terminal of the first embodiment
  • FIG. 1A is a developed plan view of the crimp terminal
  • FIG. 1B is an A- 1A is a cross-sectional view showing a state after crimping of a conductor crimping portion of a crimp terminal.
  • the crimp terminal 10 includes an electrical connection portion 11 connected to a terminal on the mating connector side at a front portion in a longitudinal direction of the terminal (which is also a longitudinal direction of a conductor of a wire to be connected), and an electric wire (illustrated) at a rear portion thereof.
  • a conductor crimping portion 13 that is crimped to the exposed conductor of the terminal (not shown), and a covering crimping portion 15 that is crimped to a portion of the electric wire with an insulation coating.
  • a first connecting portion 12 that connects between the electrical connecting portion 11 and the conductor crimping portion 13 is provided, and a second connecting between them is provided between the conductor crimping portion 13 and the covering crimping portion 15.
  • the connection part 14 is provided.
  • the conductor crimping portion 13 includes a bottom plate 13A and a pair of conductor crimping pieces 13B and 13B that are extended from the left and right side edges of the bottom plate 13A and are crimped so as to wrap the conductors of the electric wires disposed on the inner surface of the bottom plate 13A.
  • the cover crimping portion 15 is crimped so as to wrap the bottom plate 15A and electric wires (parts with an insulating coating) that extend upward from the left and right side edges of the bottom plate 15A and are arranged on the inner surface of the bottom plate 15A.
  • the pair of covering crimping pieces 15B and 15B are formed in a substantially U-shaped cross section.
  • the first connecting portion 12 and the second connecting portion 14 before and after the conductor crimping portion 13 are both a bottom plate 12A, 14A and a low-profile side plate 12B that stands up from the left and right side edges of the bottom plates 12A, 14A. 14B, and a substantially U-shaped cross section.
  • the bottom plate in the range from the front electrical connecting portion 11 to the last covering crimping portion 15, that is, the bottom plate 11 A of the electrical connecting portion 11, the bottom plate 12 A of the first connecting portion 12, and the bottom plate of the conductor crimping portion 13. 13A, the bottom plate 14A of the second connecting portion 14, and the bottom plate 15A of the cover crimping portion 15 are continuously formed in a single strip shape. Further, the front and rear ends of the low-profile side plate 12B of the first connecting portion 12 are continuous with the lower half of the rear end of the side plate 11B of the electrical connecting portion 11 and the front end of the conductor crimping piece 13B of the conductor crimping portion 13, respectively.
  • the front and rear ends of the low-profile side plate 14B of the second connecting portion 14 are the lower half of the rear end of the conductor crimping piece 13B of the conductor crimping portion 13 and the front end of the covering crimping piece 15B of the covering crimping portion 15, respectively. Each part is continuous.
  • a plurality of concave groove-shaped serrations 21 extending in a direction orthogonal to the longitudinal direction (terminal longitudinal direction) of the conductor of the electric wire are provided.
  • a plurality of protrusions 22 are formed on the inner surface of the pair of conductor crimping pieces 13B, 13B of the conductor crimping portion 13 by being pushed in from the outer surface.
  • a plurality of these protrusions 22 are provided in the inner surface of the conductor crimping piece 13 ⁇ / b> B so as to be spaced apart in the front-rear direction in a region that is in close contact with the conductor Wa of the electric wire during crimping.
  • the crimp terminal 10 In order to crimp the conductor crimping portion 13 of the crimp terminal 10 to the conductor Wa at the end of the electric wire, the crimp terminal 10 is placed on a mounting surface (upper surface) of a lower mold (anvil) (not shown) and the conductor of the end of the electric wire Is inserted between the pair of conductor crimping pieces 13B, 13B of the conductor crimping portion 13 and placed on the upper surface of the bottom plate 13A. Then, by lowering the upper mold (crimper) relative to the lower mold, the tip side of the conductor crimping piece 13B is gradually tilted inward on the upper mold guide slope.
  • the conductor crimping piece 13B is rounded so as to be folded back toward the conductor Wa, and bitten into the conductor Wa while rubbing the tips of the conductor crimping pieces 13B, so that the conductor crimping piece 13B is wrapped around the conductor Wa. Caulking.
  • the conductor crimping portion 13 of the crimp terminal 10 can be connected to the conductor Wa of the electric wire by crimping.
  • the cover crimping piece 15 B is gradually bent inward using the lower mold and the upper mold, and the cover crimping piece 15 B is applied to the portion of the electric wire with the insulation coating. Tighten. By doing so, the crimp terminal 10 can be electrically and mechanically connected to the electric wire.
  • the crimp terminal 10 of the present embodiment can exhibit the following effects in a state where the crimp connection is performed as described above.
  • the portion where the protrusion 22 is provided is due to work hardening caused by the provision of the protrusion 22 and the rib effect of the protrusion 22.
  • the rigidity of (mainly the conductor crimping piece 13B) can be increased. Accordingly, the spring back after the crimping of the conductor crimping piece 13B can be suppressed, and as a result, the crimped shape of the conductor crimping portion 13 can be reliably maintained, and the grip of the conductor crimping portion 13 with respect to the conductor of the electric wire can be maintained.
  • the presence of the protrusion 22 protruding toward the conductor Wa of the electric wire in the conductor crimping portion 13 increases the internal stress of the conductor crimping portion 13 when compared with the crimp portion of the same crimp height (C / H) without the projection 22. be able to.
  • the increase in the restraining force of the conductor Wa in the region sandwiched between the front and rear protrusions 22 has the effect of suppressing the displacement between the core wires of the conductor Wa (particularly the displacement in the front-rear direction). Strengthened and more stable electrical contact can be maintained.
  • FIGS. 2A to 2D are configuration diagrams of the crimp terminal of the second embodiment
  • FIG. 2A is a developed plan view of the crimp terminal
  • FIG. 2B is a cross-sectional view of FIG. 2B is a partial perspective view showing a state after crimping of the conductor crimping portion of the crimp terminal
  • FIG. 2D is a sectional view taken along the CC line in FIG. 2C. .
  • the difference between the crimp terminal 40 of the second embodiment and the crimp terminal 10 of the first embodiment is that no protrusion is provided on the inner surface of the conductor crimping piece 13 ⁇ / b> B of the conductor crimp part 13, and the first connecting part 12. That is, the protrusions 42 are provided on the inner surface of the side plate 12 ⁇ / b> B and the inner surface of the side plate 14 ⁇ / b> B of the second connecting portion 14. Since other than that is the same as that of 1st Embodiment, the same code
  • the rigidity of the side plates 12B and 14B of the connecting portions 12 and 14 is increased, and the conductor crimping pieces 13B that are continuous with the protrusions 13B. Springback is suppressed. Therefore, although the conductor crimping piece 13B has no protrusion, the rigidity of the conductor crimping piece 13B can be substantially increased. As a result, the crimping shape of the conductor crimping portion 13 can be reliably maintained, the grip force of the conductor crimping portion 13 with respect to the conductor of the electric wire can be improved, and the deviation between the conductor core wires can be suppressed. Thus, it is possible to expand the range in which stable electrical contact and fixing force are compatible.
  • the protrusion can be provided at an arbitrary position in a range from the inner surface of the conductor crimping piece 13B to the inner surfaces of the side plates 12B and 14B of the connecting portions 12 and 14.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

　本発明は，導体加締片のスプリングバックを抑制して，電線と端子を接続する際の電気的接続性能と機械的接続性能の両立を容易に図った圧着端子を提供することを目的とする。圧着端子には，相手コネクタ側の端子に接続される導体接続部（１１），電線の露出した導体に加締められる導体圧着部（１３），電線の絶縁被覆の付いた部分に加締められる被覆加締部（１５）が備えられている。そして，導体圧着部（１３）の導体加締片（１３Ｂ）の内面に突起（２２）が設けられている。このように突起（２２）を設けたことによる加工硬化やリブ効果により，突起（２２）の周囲の剛性アップが図られるので，導体加締片（１３Ｂ）の圧着後のスプリングバックを抑制できる。

Description

圧着端子
　本発明は、例えば、自動車の電装系に使用される断面略Ｕ字状の導体圧着部を有したオープンバレルタイプの圧着端子に関する。
　図３は、例えば特許文献１に記載された従来の圧着端子の構成を示す斜視図である。
　この圧着端子１００は、端子の長手方向（接続する電線の導体の長手方向でもある）の前部に、図示しない相手コネクタ側の端子に接続される電気接続部１０１を備え、その後部に、電線（図示略）の端末の露出した導体に加締められる導体圧着部１１０を備え、さらにその後部に、電線の絶縁被覆の付いた部分に加締められる被覆加締部１２０を備えている。また、電気接続部１０１と導体圧着部１１０の間に、それらの間を繋ぐ第１の繋ぎ部１０５を備え、導体圧着部１１０と被覆加締部１２０の間に、それらの間を繋ぐ第２の繋ぎ部１０６を備えている。
　導体圧着部１１０は、底板１１１と、底板１１１の左右両側縁から上方に延設されて底板１１１の内面上に配された電線の導体を包むように加締められる一対の導体加締片１１２、１１２とで断面略Ｕ字状に形成されている。また、被覆加締部１２０は、底板１２１と、底板１２１の左右両側縁から上方に延設されて底板１２１の内面上に配された電線（すなわち、絶縁被覆の付いた部分）を包むように加締められる一対の被覆加締片１２２、１２２とで断面略Ｕ字状に形成されている。
　また、導体圧着部１１０の前後の第１の繋ぎ部１０５および第２の繋ぎ部１０６は、共に、底板１０５Ａ、１０６Ａと、底板１０５Ａ、１０６Ａの左右両側縁から上方に起立した低背の側板１０５Ｂ、１０６Ｂと、で断面略Ｕ字状に形成されている。
　そして、前部の電気接続部１０１の底板（図示略）から最後部の被覆加締部１２０までの範囲の底板（すなわち、第１の繋ぎ部１０５の底板１０５Ａ、導体圧着部１１０の底板１１１、第２の繋ぎ部１０６の底板１０６Ａ、被覆加締部１２０の底板１２１）が、１枚の帯板状に連続して形成されている。また、第１の繋ぎ部１０５の低背の側板１０５Ｂの前後端は、電気接続部１０１の側板（符号省略）の後端および導体圧着部１１０の導体加締片１１２の前端の各下半部にそれぞれ連続し、第２の繋ぎ部１０６の低背の側板１０６Ｂの前後端は、導体圧着部１１０の導体加締片１１２の後端および被覆加締部１２０の被覆加締片１２２の前端の各下半部にそれぞれ連続している。
　また、導体圧着部１１０の内面には、電線の導体の長手方向（すなわち、端子長手方向）と直交する方向に延びる複数本の凹溝状のセレーション１１８が設けられている。
　この圧着端子１００の導体圧着部１１０を電線の端末の導体に圧着するには、図示しない下型（すなわち、アンビル）の載置面（すなわち、上面）上に圧着端子１００を載せると共に、電線の端末の導体を導体圧着部１１０の導体加締片１１２間に挿入し、底板１１１の上面に載せる。そして、上型（すなわち、クリンパ）を下型に対して相対的に下降させることにより、上型の案内斜面で導体加締片１１２の先端側を徐々に内側に倒して行く。
　そして、さらに上型（クリンパ）を下型に対して相対的に下降させることにより、最終的に、上型の案内斜面から中央の山形部に連なる湾曲面で、導体加締片１１２の先端を導体側に折り返すように丸めて、導体加締片１１２の先端同士を擦り合わせながら導体に食い込ませることにより、導体を包むように導体加締片１１２を加締める。
　以上の操作により、圧着端子１００の導体圧着部１１０を電線の導体に圧着によって接続することができる。なお、被覆加締部１２０についても同様に、下型と上型を用いて被覆加締片１２２を内側に徐々に曲げて行き、被覆加締片１２２を電線の絶縁被覆の付いた部分に加締める。こうすることにより、圧着端子１００を電線に電気的および機械的に接続することができる。
日本国特開２００６－２２８７５９号公報（図１）
　ところで、上述した従来の圧着端子の場合、圧着後の電線や導体加締片の反発力によりスプリングバックが起こり、加締めた導体加締片が開き気味になってしまい、電線と端子の電気接続性能が落ちてしまうことがあった。一方、それを防ぐために強く加締めを行うと、過圧着により芯線（すなわち、導体）にダメージが加わったりして、今度は電線と端子の固着力が低下してしまうことがあった。従って、電線と端子を接続する際の電気的接続性能と機械的接続性能の両立を図ることが難しかった。
　本発明は、上記事情を考慮し、導体加締片のスプリングバックを抑制して、電線と端子を接続する際の電気的接続性能と機械的接続性能の両立を容易に図れるようにした圧着端子を提供することを目的とする。
　（１）上記課題を解決するために、本発明の一態様によれば、端子長手方向の前部に電気接続部が設けられ、その後部に第１の繋ぎ部を介して、電線の端末の導体に圧着して接続される導体圧着部が設けられ、さらにその後部に第２の繋ぎ部を介して被覆加締部が設けられ、前記導体圧着部が、底板と、該底板の左右両側縁から上方に延設されて該底板の内面上に配された前記導体を包むように加締められる一対の導体加締片と、で断面略Ｕ字状に形成され、前記第１の繋ぎ部と第２の繋ぎ部が共に、底板と、該底板の左右両側縁から上方に起立した低背の側板と、で断面略Ｕ字状に形成され、前記導体圧着部の底板と前記第１および第２の繋ぎ部の底板とが連続して形成され、前記導体圧着部の導体加締片の下半部と前記第１および第２の繋ぎ部の低背の側板とが連続して形成されている圧着端子であって、前記導体加締片の内面から前記繋ぎ部の側板の内面にかけての範囲の任意の箇所に突起が設けられている圧着端子が提供される。
　（２）上記（１）の圧着端子には、前記導体加締片の内面のうち圧着時に電線の導体に密着する領域に、前後方向に離間して複数の前記突起が設けられていると好ましい。
　（３）上記（１）の圧着端子には、前記第１の繋ぎ部と前記第２の繋ぎ部の各側板の内面に、前記突起がそれぞれ設けられていると好ましい。
　上記（１）の圧着端子によれば、導体圧着部の導体加締片の内面から繋ぎ部の側板の内面にかけての範囲の任意の箇所に突起を設けているので、その突起を設けたことによる加工硬化や突起によるリブ効果により、突起を設けた箇所やその周囲の剛性アップを図ることができる。従って、導体加締片の内面に突起を設けた場合は、突起の存在そのものによる導体加締片の剛性アップにより、導体加締片の圧着後のスプリングバックを抑制することができる。また、導体加締片の内面に突起を設けない場合であっても、繋ぎ部の側板の内面に突起を設けた場合は、導体加締片に連続する繋ぎ部の側板の剛性アップにより、導体加締片の圧着後のスプリングバックを抑制することができる。その結果、導体圧着部の圧着形状の維持が確実に図れるとともに、電線の導体に対する導体圧着部のグリップ力の向上を図れることで、導体の芯線間のずれを抑制することができるようになり、安定した電気接触と固着力の両立した範囲の拡大を図ることができる。
　上記（２）の圧着端子のように、前記導体加締片の内面のうち圧着時に電線の導体に密着する領域に、前後方向に離間して複数の前記突起が設けられていると、導体圧着部における電線の導体側に突き出す突起の存在により、突起がない同じクリンプハイト（Ｃ／Ｈ）の圧着部と比べた場合に、導体圧着部の内部応力が高まる。また、その内部応力が高まることと併せて、前後の突起に挟まれた領域での導体の拘束力の高まりにより、導体の芯線間のずれの抑制作用が強まり、より安定した電気接触状態を維持できるようになる。
　上記（３）の圧着端子のように、前記第１の繋ぎ部と前記第２の繋ぎ部の各側板の内面に、前記突起がそれぞれ設けられていると、繋ぎ部の側板の内面に突起があることで繋ぎ部の剛性が高くなり、それに伴い導体加締片のスプリングバックが抑制されることになる。そのため、導体加締片に突起がない場合であっても、実質的な導体加締片の剛性アップが図れることになり、より安定した電気接触状態を維持できるようになる。
図１（ａ）～（ｃ）は、本発明の第１実施形態の圧着端子の構成図であり、図１（ａ）は圧着端子の展開平面図、図１（ｂ）は図１（ａ）のＡ－Ａ矢視断面図、図１（ｃ）は圧着端子の導体圧着部の圧着後の状態を示す横断面図である。 図２（ａ）～（ｄ）は、本発明の第２実施形態の圧着端子の構成図であり、図２（ａ）は圧着端子の展開平面図、図２（ｂ）は図２（ａ）のＢ－Ｂ矢視断面図、図２（ｃ）は圧着端子の導体圧着部の圧着後の状態を示す部分斜視図、図２（ｄ）は図２（ｃ）のＣ－Ｃ矢視断面図である。 図３は、従来の圧着端子の構成を示す斜視図である。
　以下、本発明の実施形態を図面を用いて説明する。
　尚、本発明の圧着端子において、相手コネクタと接続する側を前方、電線と接続する側を後方とする。
＜第１実施形態＞
　図１（ａ）～（ｃ）は第１実施形態の圧着端子の構成図であり、図１（ａ）は圧着端子の展開平面図、図１（ｂ）は図１（ａ）のＡ－Ａ矢視断面図、図１（ｃ）は圧着端子の導体圧着部の圧着後の状態を示す横断面図である。
　この圧着端子１０は、端子の長手方向（接続する電線の導体の長手方向でもある）の前部に、相手コネクタ側の端子に接続される電気接続部１１を備え、その後部に、電線（図示略）の端末の露出した導体に加締められる導体圧着部１３を備え、さらにその後部に、電線の絶縁被覆の付いた部分に加締められる被覆加締部１５を備えている。また、電気接続部１１と導体圧着部１３の間に、それらの間を繋ぐ第１の繋ぎ部１２を備え、導体圧着部１３と被覆加締部１５の間に、それらの間を繋ぐ第２の繋ぎ部１４を備えている。
　導体圧着部１３は、底板１３Ａと、底板１３Ａの左右両側縁から上方に延設されて底板１３Ａの内面上に配された電線の導体を包むように加締められる一対の導体加締片１３Ｂ、１３Ｂとで断面略Ｕ字状に形成されている。
　また、被覆加締部１５は、底板１５Ａと、底板１５Ａの左右両側縁から上方に延設されて底板１５Ａの内面上に配された電線（絶縁被覆の付いた部分）を包むように加締められる一対の被覆加締片１５Ｂ、１５Ｂとで断面略Ｕ字状に形成されている。
　また、導体圧着部１３の前後の第１の繋ぎ部１２および第２の繋ぎ部１４は、共に、底板１２Ａ、１４Ａと、底板１２Ａ、１４Ａの左右両側縁から上方に起立した低背の側板１２Ｂ、１４Ｂと、で断面略Ｕ字状に形成されている。
　そして、前部の電気接続部１１から最後部の被覆加締部１５までの範囲の底板、すなわち、電気接続部１１の底板１１Ａ、第１の繋ぎ部１２の底板１２Ａ、導体圧着部１３の底板１３Ａ、第２の繋ぎ部１４の底板１４Ａ、及び被覆加締部１５の底板１５Ａが、１枚の帯板状に連続して形成されている。また、第１の繋ぎ部１２の低背の側板１２Ｂの前後端は、電気接続部１１の側板１１Ｂの後端および導体圧着部１３の導体加締片１３Ｂの前端の各下半部にそれぞれ連続し、第２の繋ぎ部１４の低背の側板１４Ｂの前後端は、導体圧着部１３の導体加締片１３Ｂの後端および被覆加締部１５の被覆加締片１５Ｂの前端の各下半部にそれぞれ連続している。
　また、導体圧着部１３の内面には、電線の導体の長手方向（端子長手方向）と直交する方向に延びる複数本の凹溝状のセレーション２１が設けられている。
　また、この圧着端子１０では、導体圧着部１３の一対の導体加締片１３Ｂ、１３Ｂの内面に、外面から押し込んで作成された複数の突起２２が設けられている。これらの突起２２は、導体加締片１３Ｂの内面のうち、圧着時に電線の導体Ｗａに密着する領域に、前後方向に離間して複数設けられている。
　この圧着端子１０の導体圧着部１３を電線の端末の導体Ｗａに圧着するには、図示しない下型（アンビル）の載置面（上面）上に圧着端子１０を載せると共に、電線の端末の導体を導体圧着部１３の一対の導体加締片１３Ｂ、１３Ｂ間に挿入し、底板１３Ａの上面に載せる。そして、上型（クリンパ）を下型に対して相対的に下降させることにより、上型の案内斜面で導体加締片１３Ｂの先端側を徐々に内側に倒して行く。そして、さらに上型（クリンパ）を下型に対して相対的に下降させることにより、最終的に、上型の案内斜面から中央の山形部に連なる湾曲面で、図１（ｃ）に示すように、導体加締片１３Ｂの先端を導体Ｗａ側に折り返すように丸めて、導体加締片１３Ｂの先端同士を擦り合わせながら導体Ｗａに食い込ませることにより、導体Ｗａを包むように導体加締片１３Ｂを加締める。以上の操作により、圧着端子１０の導体圧着部１３を電線の導体Ｗａに圧着によって接続することができる。また、被覆加締部１５についても同様に、下型と上型を用いて被覆加締片１５Ｂを内側に徐々に曲げて行き、被覆加締片１５Ｂを電線の絶縁被覆の付いた部分に加締める。こうすることにより、圧着端子１０を電線に電気的および機械的に接続することができる。
　本実施形態の圧着端子１０は、このように圧着接続を行った状態において次のような効果を奏することができる。
　まず、導体圧着部１３の導体加締片１３Ｂの内面に突起２２を設けているので、その突起２２を設けたことによる加工硬化や突起２２によるリブ効果により、突起２２を設けた箇所はその周囲（主に導体加締片１３Ｂ）の剛性アップを図ることができる。従って、導体加締片１３Ｂの圧着後のスプリングバックを抑制することができ、その結果、導体圧着部１３の圧着形状の維持が確実に図れるようになり、電線の導体に対する導体圧着部１３のグリップ力の向上が図れると共に、導体Ｗａの芯線間のずれを抑制することができるようになり、安定した電気接触と固着力の両立した範囲の拡大を図ることができる。
　また、導体圧着部１３における電線の導体Ｗａ側に突き出す突起２２の存在により、突起２２がない同じクリンプハイト（Ｃ／Ｈ）の圧着部と比べた場合に、導体圧着部１３の内部応力を高めることができる。また、その内部応力が高まることと併せて、前後の突起２２に挟まれた領域での導体Ｗａの拘束力の高まりにより、導体Ｗａの芯線間のずれ（特に前後方向のずれ）の抑制作用が強まり、より安定した電気接触状態を維持できるようになる。
＜第２実施形態＞
　図２（ａ）～（ｄ）は第２実施形態の圧着端子の構成図であり、図２（ａ）は圧着端子の展開平面図、図２（ｂ）は図２（ａ）のＢ－Ｂ矢視断面図、図２（ｃ）は圧着端子の導体圧着部の圧着後の状態を示す部分斜視図、図２（ｄ）は図２（ｃ）のＣ－Ｃ矢視断面図である。
　この第２実施形態の圧着端子４０の第１実施形態の圧着端子１０との違いは、導体圧着部１３の導体加締片１３Ｂの内面に突起が設けられておらず、第１の繋ぎ部１２の側板１２Ｂの内面と第２の繋ぎ部１４の側板１４Ｂの内面に突起４２が設けられていることである。それ以外は第１実施形態と同様であるので、同一部分には同一符号を付して説明を省略する。
　このように繋ぎ部１２、１４の側板１２Ｂ、１４Ｂの内面に突起４２を設けたことにより、繋ぎ部１２、１４の側板１２Ｂ、１４Ｂの剛性が高くなり、それに伴い連続する導体加締片１３Ｂのスプリングバックが抑制されることになる。そのため、導体加締片１３Ｂに突起がないにも拘わらず、実質的な導体加締片１３Ｂの剛性アップが図れることになる。その結果、導体圧着部１３の圧着形状の維持が確実に図れるようになり、電線の導体に対する導体圧着部１３のグリップ力の向上が図れると共に、導体の芯線間のずれを抑制することができるようになり、安定した電気接触と固着力の両立した範囲の拡大を図ることができる。
　なお、突起は、導体加締片１３Ｂの内面から繋ぎ部１２、１４の側板１２Ｂ、１４Ｂの内面にかけての範囲の任意の箇所に設けることができる。
　本出願は、２００９年１０月２８日出願の日本特許出願（特願２００９－２４７８６３）に基づくものであり、その内容はここに参照として取り込まれる。
　１０，４０　圧着端子
　１１　　電気接続部
　１２　　第１の繋ぎ部
　１２Ａ　底板
　１２Ｂ　側板
　１３　　導体圧着部
　１３Ａ　底板
　１３Ｂ　導体加締片
　１４　　第２の繋ぎ部
　１４Ａ　底板
　１４Ｂ　側板
　１５　　被覆加締部
　２２　　突起
　４２　　突起

Claims (3)

  1. 　端子長手方向の前部に電気接続部が設けられ、その後部に第１の繋ぎ部を介して、電線の端末の導体に圧着して接続される導体圧着部が設けられ、さらにその後部に第２の繋ぎ部を介して被覆加締部が設けられ、
    　前記導体圧着部が、底板と、該底板の左右両側縁から上方に延設されて該底板の内面上に配された前記導体を包むように加締められる一対の導体加締片と、で断面略Ｕ字状に形成され、
    　前記第１の繋ぎ部と第２の繋ぎ部が共に、底板と、該底板の左右両側縁から上方に起立した低背の側板と、で断面略Ｕ字状に形成され、
    　前記導体圧着部の底板と前記第１および第２の繋ぎ部の底板とが連続して形成され、前記導体圧着部の導体加締片の下半部と前記第１および第２の繋ぎ部の低背の側板とが連続して形成されている圧着端子であって、
    　前記導体加締片の内面から前記繋ぎ部の側板の内面にかけての範囲の任意の箇所に突起が設けられている圧着端子。
  2. 　請求項１に記載の圧着端子であって、
    　前記導体加締片の内面のうち圧着時に電線の導体に密着する領域に、前後方向に離間して複数の前記突起が設けられている圧着端子。
  3. 　請求項１に記載の圧着端子であって、
    　前記第１の繋ぎ部と前記第２の繋ぎ部の各側板の内面に、前記突起がそれぞれ設けられている圧着端子。
PCT/JP2010/068881 2009-10-28 2010-10-25 圧着端子 Ceased WO2011052548A1 (ja)

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EP10826680A EP2495813A4 (en) 2009-10-28 2010-10-25 crimping terminal
CN2010800488015A CN102598414A (zh) 2009-10-28 2010-10-25 压力接合端子
US13/504,292 US9054431B2 (en) 2009-10-28 2010-10-25 Press bond terminal

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JP2009247863A JP2011096451A (ja) 2009-10-28 2009-10-28 圧着端子

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US9054431B2 (en) 2015-06-09
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