WO2012017907A1 - 圧着端子 - Google Patents
圧着端子 Download PDFInfo
- Publication number
- WO2012017907A1 WO2012017907A1 PCT/JP2011/067236 JP2011067236W WO2012017907A1 WO 2012017907 A1 WO2012017907 A1 WO 2012017907A1 JP 2011067236 W JP2011067236 W JP 2011067236W WO 2012017907 A1 WO2012017907 A1 WO 2012017907A1
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- WIPO (PCT)
- Prior art keywords
- conductor
- crimping
- end side
- serration
- bottom plate
- Prior art date
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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
- H01R4/188—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
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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
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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
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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
Definitions
- the present invention relates to a crimp terminal suitable for connection with an electric wire.
- the crimp terminal 110 is crimped and connected to an electrical connection portion 111 that can be electrically connected to a counterpart terminal (not shown) and a conductor (core wire) Wa formed by twisting a plurality of strands Wc of the electric wire W.
- a conductor crimping part 112 having a substantially U-shaped cross section and a coating crimping part 115 fixed to the insulating coating part Wb of the electric wire W are provided.
- Three concave groove-shaped serrations 118 extending in a direction orthogonal to the longitudinal direction of the conductor Wa are formed on the inner surface 112 a of the conductor crimping portion 112.
- the serration 118 is formed when the wire Wc of the conductor Wa is pushed into the concave groove-shaped serration 118 while being deformed.
- the oxide film on the surface of the wire Wc of the conductor Wa is broken to generate a new surface, and the new surface and the conductor crimp portion 112 of the crimp terminal 110 are in close contact with each other, An electrical connection is achieved.
- round serrations 116 formed of a plurality of cylindrical recesses are arranged in series at equal intervals.
- Such a round serration 116 can secure a serration edge length as compared with the concave groove-shaped serration 118, so that a new surface can be generated without increasing the pressure-bonding force, so that damage to the conductor can be reduced.
- the present invention can reduce variations in the work of caulking the conductor of the electric wire to the crimp portion of the crimp terminal, can stabilize the electrical connection resistance low, and increase the mechanical connection strength. It aims at providing the crimp terminal which can be stabilized.
- a first aspect of the present invention is a crimp terminal including the following: a bottom plate, and a conductor of an electric wire extending on both sides of the bottom plate and disposed on the inner surface of the bottom plate A conductor crimping portion formed in a substantially U-shaped cross-section with a pair of conductor crimping pieces that are crimped so as to wrap, and connected to the end of the conductor by crimping; a cylinder of the same radius on the inner surface of the conductor crimping portion A plurality of serrations composed of recesses; an electrical connection portion integrally formed at the front end of the bottom plate via a front end side coupling portion and electrically connected to a mating terminal; and a rear end at the rear end of the bottom plate A covering crimping portion integrally formed via a side connecting portion and crimping the covered portion of the electric wire; in the above configuration, the conductor crimping is more than the depth of the serration formed on the inner surface on
- the serration depth formed on the inner surface of the conductor crimping piece is greater than the serration depth formed on the inner surface of the bottom plate. Is set shallower.
- the conductor crimping portion includes a distal end side crimping portion located on the distal end side and a rear end side crimping portion located on the rear end side.
- the depth of serration formed on the inner surface of the rear end side crimping portion is set shallower than the depth of serration formed on the inner surface of the tip side crimping portion.
- the conductor crimping piece when the conductor crimping piece is crimped so as to wrap the conductor of the electric wire, due to the load applied to the conductor crimping portion,
- the serration formed on the inner surface of the rear end side of the conductor crimping piece has a feature that the conductor is difficult to enter. Therefore, on the tip side of the bottom plate, the area of the new surface generated when the conductor enters the serration is increased by deepening the serration so that the conductor can easily enter the serration when crimped. Can be closely contacted with no gap, and the electrical connection resistance can be lowered and stabilized.
- the serration can be shallow so that the conductor can enter the serration without any gap. It is possible to reduce the generation / growth of the oxide film and to stabilize the electrical connection resistance at a low level.
- the conductor crimping piece when the conductor crimping piece is crimped so as to wrap the conductor of the electric wire, when the conductor enters the serration by deepening the serration of the bottom plate portion that is easily loaded.
- the area of the new surface generated can be further increased, the conductor crimping portion and the new surface can be closely adhered without any gap, and the electrical connection resistance can be lowered and stabilized.
- the conductor can enter the serration without gaps, reducing the generation and growth of oxide film starting from the gaps, and making electrical connections Resistance can be stabilized low.
- the serration edge is crimped to the conductive wire without any unevenness, so that the damage applied to each of the strands at the time of crimping is reduced. A sufficient mechanical connection strength can be obtained while being dispersed.
- the area of the new surface is expanded during crimping, and the electrical connection resistance between the conductor and the terminal can be further stabilized.
- FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is a perspective view which shows the crimp terminal of 1st Embodiment of this invention. It is a principal part expanded view which shows the conductor crimping
- FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5.
- FIG. 8A shows a state in which a conductor enters a deep serration without a gap
- FIG. 8B shows a state in which a conductor does not enter a deep serration
- 8 (c) shows a state where the conductor enters the shallow serration without any gap.
- FIG. 10 is a cross-sectional view taken along line XX in FIG. 9.
- the crimp terminal 10 is manufactured by pressing a copper or copper alloy plate material that has been pre-plated with tin.
- the crimp terminal 10 is connected to the outer periphery of the terminal of the conductor Wa of the electric wire W via the distal end side coupling portion 11a immediately after the electrical connection portion 11 and the electrical connection portion 11 electrically connected to the counterpart terminal at the distal end portion.
- the electrical connection portion 11 is formed on the distal end side of the conductor crimping portion 12 via the distal end side coupling portion 11a, and the covering crimping portion 15 is disposed on the rear end side of the conductor crimping portion 12 via the rear end side coupling portion 15a. Is formed.
- the electric wire W is composed of a conductor (core wire) Wa formed by twisting a plurality of strands Wc and an insulating coating portion Wb covering the conductor Wa.
- the crimp terminal 10 is formed of the conductor Wa of the electric wire W.
- the terminal (front end) is connected with its front-rear direction aligned with the longitudinal direction of the conductor Wa of the electric wire W.
- the conductor crimping portion 12 includes a pair of left and right conductors that are crimped so as to wrap around the bottom plate 13 that is continuous from the electrical connection portion 11 and the conductor Wa that is provided on the left and right sides of the bottom plate 13 and is disposed on the inner surface 13a of the bottom plate 13.
- the fastening pieces 14 and 14 are formed in a substantially U-shaped cross section.
- Serrations 16 are regularly arranged at predetermined intervals on the inner surface of the conductor crimping portion 12, that is, in the range from the inner surface 13 a of the bottom plate 13 to the inner surface 14 a of the conductor crimping piece 14.
- the serrations 16 include a bottom plate serration 18 a formed on the inner surface of the bottom plate 13 and a crimping piece serration 18 b formed on the inner surface of the conductor crimping piece 14.
- the bottom plate serration 18a and the crimping piece serration 18b are cylindrical recesses having the same radius, but are set so that the depth of the crimping piece serration 18b is shallower than the depth of the bottom plate serration 18a.
- the conductor Wa exposed by peeling off the end of the electric wire W is placed, and as shown in FIG.
- the fastening pieces 14 and 14 are crimped so as to enclose the conductor Wa
- the inner surface of the conductor crimping portion 12 and the conductor Wa are strongly pressed by a load applied from the outside, and the conductor Wa is between the serration 16 and the serration 16. While extending along the longitudinal direction, a part of the conductor Wa is press-fitted into the serration 16.
- the oxide film on the surface of the conductor Wa is broken by the serration edge 17 which is the opening edge of the serration 16, and the new surface is exposed, and the new surface and the serration 16 are in close contact with each other.
- the electrical connection resistance can be lowered.
- the bottom plate serration 18a constituting the serration 16 is set deep, the bottom plate serration 18a is formed on the bottom plate 13 where load is easily applied. Therefore, a part of the conductor Wa is in the bottom plate serration 18a. Enter without gaps. For this reason, since an oxide film is not formed on the exposed new surface, the electrical connection resistance can be stabilized while being low.
- the arrangement pattern of the serrations 16 of the present embodiment is such that the conductor Wa is composed of a single conductive wire, or the wire diameter of each strand Wc is relatively thick even if the conductor Wa is twisted and bundled.
- the conductor Wa is composed of a single conductive wire, or the wire diameter of each strand Wc is relatively thick even if the conductor Wa is twisted and bundled.
- FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the main difference between the present embodiment and the first embodiment is the arrangement pattern of the serrations 16 formed on the inner surface of the conductor crimping portion 12.
- the conductor crimping portion 12 is composed of a distal end side crimping portion 12a located on the distal end side and a rear end side crimping portion 12b located on the rear end side, and is formed on the inner surface of the distal end side crimping portion 12a.
- the depth of the rear end side serration 19b formed on the inner surface of the rear end side crimping portion 12b is set to be shallower than the depth of the front end side serration 19a.
- the rear end side crimping portion 12b is provided with a rear end side serration 19b having a small depth and less damage to the element wire Wc to satisfy the mechanical connection strength.
- the deep tip serration 19a is arranged to stabilize the electrical connection resistance between the conductor Wa and the crimp terminal 10 to be lower.
- the serration 16 of the first embodiment and the second embodiment has the conductor crimping portion 12 divided into two regions and formed in two types of depths, but the bottom plate 13 and the conductor crimping piece 14 are formed.
- the conductor crimping part 12 is divided into a leading end side and a trailing end side, the leading end side crimping part (the leading end side of the bottom plate 13), the trailing end side plate crimping part (the trailing end side of the bottom plate 13), and the leading end side crimping crimping part ( Divided into four regions, the leading end side of the conductor crimping piece 14) and the rear end side crimping crimping portion (the trailing end side of the conductor crimping piece 14),
- the serration depth of the side crimping part is shallow, and the serration depth of the rear side bottom plate crimping part and the front side crimping part is the serration depth of the front side bottom plate crimping part and the rear side crimping part. You may form in the depth of three types made into the middle.
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Multi-Conductor Connections (AREA)
Abstract
底板(13)と、底板(13)の両側に延設されて底板(13)の内面上に配された電線(W)の導体(Wa)を包むように加締められる一対の導体加締片(14)とで断面略U字状に形成され、導体(Wa)の端末に圧着して接続される導体圧着部(12)と、導体圧着部(12)の内面に、同一半径の円筒凹部からなる複数のセレーション(16)とを備えた圧着端子(10)に対して、底板(13)の先端側内面に形成されたセレーション(16)の深さよりも、導体加締片(14)の後端側内面に形成されたセレーション(16)の深さを浅く設定する。
Description
本発明は、電線との接続に用いて好適な圧着端子に関するものである。
従来の圧着端子として、図1に示すものが知られている(例えば、特許文献1参照)。この圧着端子110は、図示しない相手側端子と電気的に接続可能な電気接続部111と、電線Wの複数本の素線Wcを撚り合わせてなる導体(芯線)Waに圧着して接続される断面略U字状の導体圧着部112と、電線Wの絶縁被覆部Wbに固定される被覆加締部115とを備えている。この導体圧着部112の内面112aには、導体Waの長手方向に対して直交する方向に延びる3本の凹溝状のセレーション118が形成されている。
そして、圧着端子110の導体圧着部112に電線Wの導体Waを加締めにより圧着すると、導体Waの素線Wcが、凹溝状のセレーション118内に変形しながら押込まれる際に、セレーション118の縁部であるセレーションエッジ117をきっかけにして、導体Waの素線Wcの表面の酸化膜を破り、新生面を生成し、この新生面と圧着端子110の導体圧着部112との間で密着し、電気接続が達成される。
ところで、上記従来技術の圧着端子110では、圧着端子の圧着部に電線の導体を加締める際のばらつきが大きく、例えば、圧着力が足りない(圧縮率が低過ぎる)と、新生面の生成が十分に行なわれず、圧着端子と電線の酸化膜との間の電気的な接続抵抗が高く、不安定になる。また、圧着力が強過ぎる(圧縮率が高過ぎる)と、導体へのダメージが大きく(特に細い素線を撚り束ねた導体の場合はダメージが大きくなりやすく)、圧着端子と電線の機械的な接続強度(固着力)が低くばらつきやすくなるという問題がある。
そこで、凹溝状のセレーション118に代わる物として、図2及び図3に示すように、複数の円筒の凹部からなる丸セレーション116を等間隔に直列に配置する構成が考えられている。このような丸セレーション116によって、凹溝状のセレーション118よりもセレーションエッジ長を確保できるので、圧着力を高めなくても新生面の生成が行えるので、導体へのダメージを小さくすることができる。
しかしながら、丸セレーション116でも、等間隔に直列に配置しただけでは、圧着端子の圧着部に電線の導体を加締める際のばらつきを抑えることは困難である。
本発明は、上記事情を考慮し、圧着端子の圧着部に電線の導体を加締める作業におけるばらつきを低減し、電気的な接続抵抗を低く安定させることができると共に、機械的な接続強度を高く安定させることのできる圧着端子を提供することを目的とする。
上記目的を達成するために、本発明の第1アスペクトは、圧着端子であって、以下を含む:底板と、前記底板の両側に延設されて前記底板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とで断面略U字状に形成され、前記導体の端末に圧着して接続される導体圧着部;前記導体圧着部の内面に、同一半径の円筒凹部からなる複数のセレーション;前記底板の先端に、先端側連結部を介して一体に形成され、相手側端子と電気的に接続される電気接続部;及び、前記底板の後端に、後端側連結部を介して一体に形成され、前記電線の被覆付の部分を加締める被覆加締部;上記構成において、前記底板の先端側内面に形成されたセレーションの深さよりも、前記導体加締片の後端側内面に形成されたセレーションの深さの方が浅く設定されている。
前記第1アスペクトから従属する本発明の第2アスペクトは、前記圧着端子において、前記底板の内面に形成されるセレーションの深さよりも、前記導体加締片の内面に形成されるセレーションの深さの方が浅く設定されている。
前記第1アスペクトから従属する本発明の第3アスペクトは、前記圧着端子において、 前記導体圧着部が、先端側に位置する先端側圧着部と、後端側に位置する後端側圧着部とから形成され;及び、前記先端側圧着部の内面に形成されるセレーションの深さよりも、前記後端側圧着部の内面に形成されるセレーションの深さの方が浅く設定されている。
上述第1アスペクトに記載の本発明によれば、電線の導体を包むように導体加締片を加締める際に、導体圧着部に掛る荷重によって、底板の先端側内面に形成されたセレーションには、導体が入り込み易く、導体加締片の後端側内面に形成されたセレーションには、導体が入り込み難いという特徴がある。そこで、底板の先端側では、加締めた際に導体がセレーション内部に入り込み易い分、セレーションを深くすることで、導体がセレーション内部に入り込む際に生じる新生面の面積をより拡げ、導体圧着部と新生面とが隙間無く密着し、電気的な接続抵抗を低く安定させることができる。また、導体加締片の後端側では、加締めた際にセレーション内に導体が入り難い分、セレーションを浅くすることで、セレーション内に導体が隙間なく入り込むことができるので、隙間を起点とする酸化被膜の生成・成長を低減し、電気的な接続抵抗を低く安定させることができる。
上述第2アスペクトに記載の本発明によれば、電線の導体を包むように導体加締片を加締める際に、荷重が掛かり易い底板部のセレーションを深くすることで、導体がセレーション内部に入り込む際に生じる新生面の面積をより拡げ、導体圧着部と新生面とが隙間無く密着し、電気的な接続抵抗を低く安定させることができる。また、荷重が掛り難い導体加締片のセレーションを浅くすることで、セレーション内に導体が隙間なく入り込むことができるので、隙間を起点とする酸化被膜の生成・成長を低減し、電気的な接続抵抗を低く安定させることができる。
上述第3アスペクトに記載の本発明によれば、後端側圧着部では、浅いセレーションが配置されたことによって、導線にセレーションエッジが斑なく無く圧着するので、圧着時に素線それぞれに加わるダメージを分散させつつ、機械的な接続強度を十分に得ることができる。
また、先端側圧着部では、深いセレーションが配置されるため、圧着時に新生面の面積が拡がり、導体と端子との電気的な接続抵抗をより低く安定させることができる。
以下、本発明の第1実施形態を図4乃至図8(c)を参照して説明する。
図4に示すように、この圧着端子10は、あらかじめ錫メッキが施された銅または銅合金の板材をプレス加工することにより製作されている。圧着端子10は、先端部分に相手側端子と電気的に接続される電気接続部11と、電気接続部11の直後に、先端側連結部11aを介して電線Wの導体Waの端末の外周に巻回、圧着して導体Waと電気的に接続される導体圧着部12と、その更に後側に、後端側連結部15aを介して電線Wの被覆付の部分の外周に巻回し、加締められる被覆加締部15とが形成されている。つまり、導体圧着部12の先端側に先端側連結部11aを介して電気接続部11が形成され、導体圧着部12の後端側に後端側連結部15aを介して被覆加締部15が形成されている。
電線Wは、複数本の素線Wcを撚り合わせてなる導体(芯線)Waと、この導体Waを被覆する絶縁被覆部Wbとで構成されており、圧着端子10は、電線Wの導体Waの端末(前端)に、その前後方向を電線Wの導体Waの長手方向と一致させて接続される。
導体圧着部12は、電気接続部11から連続する底板13と、底板13の左右両側に延設されて底板13の内面13a上に配された導体Waを包むように加締められる左右一対の導体加締片14,14とで断面略U字状に形成されている。
この導体圧着部12の内面、即ち、底板13の内面13aから導体加締片14の内面14aにかけての範囲には、セレーション16が所定の間隔で規則正しく配置されている。また、これらセレーション16は、底板13の内面に形成される底板セレーション18aと、導体加締片14の内面に形成される加締片セレーション18bとで構成されている。底板セレーション18aと加締片セレーション18bとは、同一半径の円筒状凹部であるが、底板セレーション18aの深さよりも加締片セレーション18bの深さの方が浅くなるように設定されている。
このように構成された圧着端子10の導体圧着部12の底板13の上に、電線Wの端末を皮剥きして露出させた導体Waを載せて、図7に示すように、一対の導体加締片14,14を導体Waを包むように加締めて圧着すると、外部から加えられる荷重により、導体圧着部12の内面と導体Waが強く圧接して、セレーション16とセレーション16の間では導体Waが長手方向に沿って延びるとともに、セレーション16内に導体Waの一部が圧入される。
そして、導体Waの一部が底板セレーション18a内に入り込む際に、セレーション16の開口縁であるセレーションエッジ17によって導体Wa表面の酸化膜が破れて新生面が露出し、新生面とセレーション16とが密着することで、電気的な接続抵抗を下げることができる。
また、セレーション16を構成する底板セレーション18aの深さは、深く設定されているが、荷重が掛り易い底板13に底板セレーション18aは形成されているため、導体Waの一部が底板セレーション18a内に隙間無く入り込む。このため、露出した新生面に酸化膜が形成されることがないので、電気的な接続抵抗を低いまま安定させることができる。
さらに、導体Waの一部がセレーション16内に深く入り込むことで、導体Waがセレーションエッジ17に引っ掛かり、機械的な接続強度を高めることができる。
したがって、本実施形態のセレーション16の配置パターンは、導体Waが単一の導線で構成されていたり、複数の素線Wcを撚り束ねた物でも各素線Wcの線径が比較的太い場合のように、機械的なダメージに比較的強い導体に対して、導体と圧着端子との機械的な接続強度をより強化しつつ、電気的な接続抵抗も小さくしたい場合に適している。
次に、本発明の第2実施形態を、図9及び図10を参照して説明する。上記第1実施形態と同様の構成については、同一の符号を付し、詳細な説明は省略する。本実施形態と上記第1実施形態との構成で大きく異なる点は、導体圧着部12内面に形成されるセレーション16の配置パターンである。
本実施形態では、導体圧着部12が、先端側に位置する先端側圧着部12aと、後端側に位置する後端側圧着部12bとで構成され、先端側圧着部12aの内面に形成される先端側セレーション19aの深さよりも、後端側圧着部12bの内面に形成される後端側セレーション19bの深さの方が浅くなるように設定されている。
電線Wを圧着端子10から引き抜く方向に荷重が加わった場合、導体圧着部12の後端側に荷重が大きく掛かるため、細い素線Wcを撚り束ねた導体Waの場合には、後端側圧着部12bに、導体Waへのダメージが大きいセレーション16を配置した場合には、後端側圧着部12bで素線Wcが断線するおそれがある。そこで、後端側圧着部12bには、素線Wcへのダメージが少ない、深さの浅い後端側セレーション19bを配置し、機械的な接続強度を満足させている。また、電線Wを圧着端子10から引き抜く方向に荷重が加わった際に、後端側圧着部12bで荷重を受けるため、先端側圧着部12aで素線Wcが断線するおそれは少ないことから、深さの深い先端側セレーション19aを配置し、導体Waと圧着端子10との電気的な接続抵抗をより低く安定させている。
したがって、細い素線Wcを撚り束ねた導体Waのような、機械的なダメージに対して、比較的強くない導体に圧着端子を圧着する場合に、機械的強度と電気的な接続抵抗の低減を両立させることができるセレーション16の配置パターンである。
なお、導体の構成に応じて、先端側圧着部12aと後端側圧着部12bの配置パターンを代えることが可能である。たとえば、上記第1実施形態、第2実施形態のセレーション16は、導体圧着部12を2つの領域に分けて、2種類の深さで形成しているが、底板13と導体加締片14を先端側と後端側に分けて、導体圧着部12を先端側底板圧着部(底板13の先端側)、後端側底板圧着部(底板13の後端側)、先端側加締圧着部(導体加締片14の先端側)、後端側加締圧着部(導体加締片14の後端側)の4つ領域に分け、先端側底板圧着部のセレーションの深さを深く、後端側加締圧着部のセレーションの深さをを浅く、後端側底板圧着部と先端側加締圧着部のセレーションの深さを先端側底板圧着部と後端側加締圧着部のセレーションの深さの中間とする3種類の深さで形成しても良い。
なお、日本国特許出願第2010-175183号(2010年8月4日出願)の全内容が、参照により、本願明細書に組み込まれている。
本発明は、前述の発明の実施の形態の説明に限るものではなく、適宜の変更を行うことにより、その他種々の態様で実施可能である。
Claims (3)
- 圧着端子が、以下を含む:
底板と、前記底板の両側に延設されて前記底板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とで断面略U字状に形成され、前記導体の端末に圧着して接続される導体圧着部;
前記導体圧着部の内面に、同一半径の円筒凹部からなる複数のセレーション;
前記底板の先端に、先端側連結部を介して一体に形成され、相手側端子と電気的に接続される電気接続部;及び
前記底板の後端に、後端側連結部を介して一体に形成され、前記電線の被覆付の部分を加締める被覆加締部;
上記構成において、前記底板の先端側内面に形成されたセレーションの深さよりも、前記導体加締片の後端側内面に形成されたセレーションの深さの方が浅く設定されている。 - 請求項1に記載の圧着端子において、
前記底板の内面に形成されるセレーションの深さよりも、前記導体加締片の内面に形成されるセレーションの深さの方が浅く設定されている。 - 請求項1に記載の圧着端子において、
前記導体圧着部が、先端側に位置する先端側圧着部と、後端側に位置する後端側圧着部とから形成され;及び
前記先端側圧着部の内面に形成されるセレーションの深さよりも、前記後端側圧着部の内面に形成されるセレーションの深さの方が浅く設定されている。
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US13/813,892 US8858275B2 (en) | 2010-08-04 | 2011-07-28 | Crimp-style terminal |
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JP5695987B2 (ja) * | 2011-07-01 | 2015-04-08 | 矢崎総業株式会社 | 単芯電線及び単芯電線の端子圧着構造 |
JP5890992B2 (ja) * | 2011-10-05 | 2016-03-22 | 矢崎総業株式会社 | 圧着端子 |
JP5909345B2 (ja) * | 2011-11-11 | 2016-04-26 | 矢崎総業株式会社 | コネクタ端子 |
JP2017033776A (ja) * | 2015-08-03 | 2017-02-09 | 矢崎総業株式会社 | 圧着端子及びその製造方法並びに電線、ワイヤハーネス |
JP7116112B2 (ja) * | 2020-03-18 | 2022-08-09 | 矢崎総業株式会社 | 端子付き電線 |
JP7502230B2 (ja) | 2020-05-27 | 2024-06-18 | 古河電気工業株式会社 | 端子付き電線、ワイヤハーネス、及び端子付き電線の製造方法 |
JP7111784B2 (ja) * | 2020-09-11 | 2022-08-02 | 矢崎総業株式会社 | 雌端子の製造方法 |
DE102021109486A1 (de) | 2021-04-15 | 2022-10-20 | Te Connectivity Germany Gmbh | Elektrische Crimpferrule, Verfahren zur Ferrulenmontage sowie Verfahren zum Assemblieren einer elektrischen Verbindungseinrichtung |
JP7467516B2 (ja) * | 2022-02-16 | 2024-04-15 | 矢崎総業株式会社 | 圧着端子 |
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IN2013CN01631A (ja) | 2015-08-21 |
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US20130130565A1 (en) | 2013-05-23 |
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