JP2021015759A - Crimping terminal - Google Patents

Crimping terminal Download PDF

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JP2021015759A
JP2021015759A JP2019131079A JP2019131079A JP2021015759A JP 2021015759 A JP2021015759 A JP 2021015759A JP 2019131079 A JP2019131079 A JP 2019131079A JP 2019131079 A JP2019131079 A JP 2019131079A JP 2021015759 A JP2021015759 A JP 2021015759A
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crimping
core wire
wire
pair
recessed
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孝裕 松尾
Takahiro Matsuo
孝裕 松尾
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矢崎総業株式会社
Yazaki Corp
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Abstract

To provide a crimping terminal in which the tips of a pair of crimping piece portions surely bite into a core wire, the conduction resistance with an electronic wire is low, and, the adhesive force is strong.SOLUTION: A crimping terminal 10 includes a core wire crimping portion 16 that includes a base portion 16a and a pair of crimping piece portions 16b extending from both side ends of the base portion 16a, and crimps a core wire 1 composed of a plurality of strands 1a of an electric wire W, and a recessed portion 18 provided on the inner surface of the root portion of the crimping piece portion 16b.SELECTED DRAWING: Figure 2

Description

本発明は、電線に接続する圧着端子に関する。 The present invention relates to a crimp terminal connected to an electric wire.
電線に圧着する圧着端子の従来例が図4〜図7に示されている(特許文献1、2参照)。図4及び図5において、圧着端子110を接続する電線Wは、複数の素線101aからなる芯線101と芯線101の外周を覆う絶縁外皮102とから構成されている。電線Wの先端側は、絶縁外皮102が除去されて芯線101が露出されている。 Conventional examples of crimp terminals that are crimped to an electric wire are shown in FIGS. 4 to 7 (see Patent Documents 1 and 2). In FIGS. 4 and 5, the electric wire W connecting the crimp terminal 110 is composed of a core wire 101 composed of a plurality of strands 101a and an insulating outer skin 102 covering the outer periphery of the core wire 101. On the tip end side of the electric wire W, the insulating outer skin 102 is removed to expose the core wire 101.
圧着端子110は、相手端子接続部111と電線接続部115を有する。電線接続部115は、芯線圧着部116と外皮圧着部117を有する。芯線圧着部116は、基底部116aとこの基底部116aの両側から延設された一対の加締め片部116bを有する。外皮圧着部117は、基底部117aとこの基底部117aの両側から延設された一対の加締め片部117bを有する。 The crimp terminal 110 has a mating terminal connecting portion 111 and an electric wire connecting portion 115. The electric wire connecting portion 115 has a core wire crimping portion 116 and an outer skin crimping portion 117. The core wire crimping portion 116 has a base portion 116a and a pair of crimping piece portions 116b extending from both sides of the base portion 116a. The exodermis crimping portion 117 has a base portion 117a and a pair of crimping piece portions 117b extending from both sides of the base portion 117a.
圧着端子110は、芯線圧着部116によって露出された芯線101を加締め圧着し、外皮圧着部117によって絶縁外皮102を加締め圧着している。 The crimp terminal 110 crimps and crimps the core wire 101 exposed by the core wire crimping portion 116, and crimps and crimps the insulating outer skin 102 by the outer skin crimping portion 117.
芯線圧着部116の加締め圧着は、加締め治具140によって圧着される。加締め治具140は、図6(a)、(b)に示すように、アンビル141と、加締め先端側に最終的な加締め外周形状の加締め溝142aを有するクリンパ142とを有する。アンビル141の上面に芯線圧着部116を載置し、上方よりクリンパ142を降下させる。すると、アンビル141及びクリンパ142が基底部116a及び一対の加締め片部116bを押圧して芯線101の外周を包み込むように塑性変形すると共に、一対の加締め片部116bの先端が芯線1内に食い込む。そして、アンビル141とクリンパ142による最終加締め位置において、図5(b)に示すように、一対の加締め片部116bの先端が芯線1内に十分に食い込んだ状態で加締め圧着される。 The crimping and crimping of the core wire crimping portion 116 is crimped by the crimping jig 140. As shown in FIGS. 6A and 6B, the crimping jig 140 has an anvil 141 and a crimper 142 having a crimping groove 142a having a final crimping outer peripheral shape on the crimping tip side. The core wire crimping portion 116 is placed on the upper surface of the anvil 141, and the crimper 142 is lowered from above. Then, the anvil 141 and the crimper 142 press the base portion 116a and the pair of crimping pieces 116b and plastically deform so as to wrap around the outer circumference of the core wire 101, and the tips of the pair of crimping pieces 116b are inside the core wire 1. Bite into. Then, at the final crimping position by the anvil 141 and the crimper 142, as shown in FIG. 5B, the tip of the pair of crimping piece portions 116b is sufficiently crimped and crimped in the core wire 1.
特開2009−123623号公報JP-A-2009-123623 特開2003−59612号公報Japanese Unexamined Patent Publication No. 2003-59612
しかしながら、図7に示すように、上記した塑性変形に際して一対の加締め片部116bの先端同士が突き当たる状態まで塑性変形した状態にあって、芯線圧着部116内の芯線101の充填率が高いと、一対の加締め片部116bの先端が容易に芯線101に食い込まないため、各加締め片部116bが座屈する可能性がある(図7参照)。 However, as shown in FIG. 7, when the core wire 101 in the core wire crimping portion 116 is in a state of being plastically deformed to a state where the tips of the pair of crimping pieces 116b abut each other during the plastic deformation described above, the filling rate of the core wire 101 is high. Since the tips of the pair of crimping pieces 116b do not easily bite into the core wire 101, each crimping piece 116b may buckle (see FIG. 7).
一対の加締め片部116bの先端が芯線101に食い込ませない状態で圧着されると、芯線圧着部116と芯線1との接触面積が小さいために導通抵抗が大きくなり、又、芯線圧着部116と芯線1間の固着力が弱くなるという問題が発生する。 When the tips of the pair of crimping pieces 116b are crimped without biting into the core wire 101, the contact area between the core wire crimping portion 116 and the core wire 1 is small, so that the conduction resistance becomes large, and the core wire crimping portion 116 And the problem that the fixing force between the core wire 1 becomes weak occurs.
そこで、本発明は、前記した課題を解決すべくなされたものであり、一対の加締め片部の先端が確実に芯線に食い込み、電線との間の導通抵抗が低く、且つ、固着力が強い圧着端子を提供することを目的とする。 Therefore, the present invention has been made to solve the above-mentioned problems, and the tips of the pair of crimping pieces surely bite into the core wire, the conduction resistance with the electric wire is low, and the fixing force is strong. It is an object of the present invention to provide a crimp terminal.
本発明は、基底部と前記基底部の両側端から延設された一対の加締め片部を有し、電線の複数の素線からなる芯線を圧着する芯線圧着部と、前記加締め片部の根本箇所の内面に設けられた窪み部とを備えたことを特徴とする圧着端子である。 The present invention has a core wire crimping portion that has a base portion and a pair of crimping pieces extending from both end ends of the base portion, and crimps a core wire composed of a plurality of strands of an electric wire, and the crimping piece portion. It is a crimp terminal characterized by having a recessed portion provided on the inner surface of the root portion of the cable.
本発明によれば、芯線圧着部の加締め圧着過程で、芯線が窪み部に入り込むことができるため、芯線の充填率が高くならず、各加締め片部の先端が確実に芯線内に入り込み、電線との間の導通抵抗が低く、且つ、固着力が強い。 According to the present invention, since the core wire can enter the recessed portion in the crimping process of the core wire crimping portion, the filling rate of the core wire does not increase, and the tip of each crimping piece portion surely enters the core wire. , The conduction resistance between the wire and the wire is low, and the adhesive force is strong.
本発明の一実施形態を示し、(a)は圧着端子に電線を圧着する前の斜視図、(b)は(a)のA−A線断面図である。An embodiment of the present invention is shown, (a) is a perspective view before crimping an electric wire to a crimp terminal, and (b) is a sectional view taken along line AA of (a). 本発明の一実施形態を示し、(a)は電線を圧着した圧着端子の側面図、(b)は(a)のB−B線断面図である。An embodiment of the present invention is shown, where (a) is a side view of a crimp terminal to which an electric wire is crimped, and (b) is a sectional view taken along line BB of (a). 本発明の一実施形態を示し、(a)は加締め過程の初期状態を示す断面図、(b)は加締め過程で、一対の加締め片部の先端同士が突き当たった状態を示す断面図、(c)は加締め過程で、芯線の素線が窪み部に入り込んだ状態を示す断面図、(d)は加締め過程の最終の塑性変形状態を示す断面図である。An embodiment of the present invention is shown, in which (a) is a cross-sectional view showing an initial state of the crimping process, and (b) is a cross-sectional view showing a state in which the tips of a pair of crimping pieces abut against each other in the crimping process. , (C) is a cross-sectional view showing a state in which the strands of the core wire have entered the recessed portion in the crimping process, and (d) is a cross-sectional view showing the final plastic deformation state in the crimping process. 従来例を示し、圧着端子に電線を圧着する前の斜視図である。A conventional example is shown, and it is a perspective view before crimping an electric wire to a crimp terminal. 従来例を示し、(a)は電線を圧着した圧着端子の側面図、(b)は(a)のC−C線断面図である。A conventional example is shown, (a) is a side view of a crimp terminal in which an electric wire is crimped, and (b) is a sectional view taken along line CC of (a). 従来例を示し、(a)は加締め過程の初期状態を示す断面図、(b)は加締め過程の最終の塑性変形状態を示す断面図である。A conventional example is shown, (a) is a cross-sectional view showing an initial state of the crimping process, and (b) is a cross-sectional view showing the final plastic deformation state of the crimping process. 従来例を示し、一対の芯線加締め部の先端が芯線に食い込まずに座屈した状態を示す断面図である。It is sectional drawing which shows the conventional example, and shows the state which the tip of the pair of core wire crimping portions buckled without biting into the core wire.
以下、本発明の一実施形態を図面に基づいて説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
図1〜図3は本発明の一実施形態を示す。図1及び図2に示すように、電線Wは、複数の素線1aからなる芯線1と芯線1の外周を覆う絶縁外皮2とから構成されている。電線Wの先端側は、絶縁外皮2が除去されて芯線1が露出されている。芯線1は、アルミニウム製又はアルミニウム合金製(以下、アルミ製)の多数の素線1aからなり、多数の素線1aが互いに撚られている。つまり、電線Wは、アルミ電線である。 1 to 3 show an embodiment of the present invention. As shown in FIGS. 1 and 2, the electric wire W is composed of a core wire 1 composed of a plurality of strands 1a and an insulating outer skin 2 covering the outer periphery of the core wire 1. On the tip end side of the electric wire W, the insulating outer skin 2 is removed to expose the core wire 1. The core wire 1 is made of a large number of strands 1a made of aluminum or an aluminum alloy (hereinafter, made of aluminum), and a large number of strands 1a are twisted together. That is, the electric wire W is an aluminum electric wire.
圧着端子10は、例えば銅合金製であり、所定形状に裁断したプレートを折り曲げ加工することによって形成されている。圧着端子10は、相手端子接続部11と電線接続部15を有する。電線接続部15は、芯線圧着部16と外皮圧着部17を有する。芯線圧着部16は、基底部16aとこの基底部16aの両側端から延設された一対の加締め片部16bを有する。電線Wを圧着する前では、一対の加締め片部16bは、それぞれ先端に向かうに従って互いの間隔が徐々に離間する外斜めに延びるストレート形状である。 The crimp terminal 10 is made of, for example, a copper alloy, and is formed by bending a plate cut into a predetermined shape. The crimp terminal 10 has a mating terminal connecting portion 11 and an electric wire connecting portion 15. The electric wire connecting portion 15 has a core wire crimping portion 16 and an outer skin crimping portion 17. The core wire crimping portion 16 has a base portion 16a and a pair of crimping piece portions 16b extending from both side ends of the base portion 16a. Before crimping the electric wire W, the pair of crimping piece portions 16b each have a straight shape extending diagonally outward so that the distance between them gradually increases toward the tip.
芯線圧着部16の各加締め片部16bには、図1(b)等に詳しく示すように、その根本箇所の内面に窪み部18がそれぞれ設けられている。窪み部18は、芯線1の軸方向に直交する断面形状が円弧状である(図1(b)参照)。窪み部18は、加締め片部16bの全幅D(図1(a)、図2(a)参照)に亘って形成されている。 As shown in detail in FIG. 1B and the like, each crimping piece portion 16b of the core wire crimping portion 16 is provided with a recessed portion 18 on the inner surface of the root portion thereof. The recessed portion 18 has an arcuate cross-sectional shape orthogonal to the axial direction of the core wire 1 (see FIG. 1B). The recessed portion 18 is formed over the entire width D (see FIGS. 1 (a) and 2 (a)) of the crimping piece portion 16b.
外皮圧着部17は、基底部17aとこの基底部17aの両側から延設された一対の加締め片部17bを有する。 The exodermis crimping portion 17 has a base portion 17a and a pair of crimping piece portions 17b extending from both sides of the base portion 17a.
圧着端子10は、芯線圧着部16によって露出された芯線1を加締め圧着し、外皮圧着部17によって絶縁外皮2を加締め圧着している。 In the crimp terminal 10, the core wire 1 exposed by the core wire crimping portion 16 is crimped and crimped, and the insulating outer skin 2 is crimped and crimped by the outer skin crimping portion 17.
圧着端子10は、加締め治具20によって圧着される。図3に示すように、加締め治具20は、アンビル21と、アンビル21に対して昇降するクリンパ22とを有する。アンビル21の上面21aは、芯線圧着部16の主に基底部16aの最終的な加締め外周形状に形成されている。クリンパ22の下方側には、加締め溝22aが形成されている。加締め溝22aは、芯線圧着部16の一対の加締め片部16bの最終的な加締め外周形状を有する。 The crimp terminal 10 is crimped by the crimping jig 20. As shown in FIG. 3, the crimping jig 20 has an anvil 21 and a crimper 22 that moves up and down with respect to the anvil 21. The upper surface 21a of the anvil 21 is formed in the final crimping outer peripheral shape of the core wire crimping portion 16 mainly on the base portion 16a. A crimping groove 22a is formed on the lower side of the crimper 22. The crimping groove 22a has the final crimping outer peripheral shape of the pair of crimping piece portions 16b of the core wire crimping portion 16.
次に、加締め治具20を用いた芯線圧着部16の圧着工程を説明する。アンビル21の上面21aに芯線圧着部16を載置する。次に、図3(a)に示すように、上方よりクリンパ22を降下させる。すると、クリンパ22が一対の加締め片部16bを押圧し、先端に向かって外方に開く形状の一対の加締め片部16bが互いの間隔を狭める方向に塑性変形される。クリンパ22が更に降下されると、図3(b)に示すように、一対の加締め片部16bの先端同士が突き合わさる状態に塑性変形される。この状態からクリンパ22が更に降下すると、一対の加締め片部16bの先端箇所が芯線1を圧縮する。この圧縮力によって、図3(c)に示すように、窪み部18の近くに位置する芯線1の素線1aが窪み部18に入り込む(逃げる)。これによって、芯線圧着部16内の芯線1の充填率が高くならないため、一対の加締め片部16bの先端が芯線1内に容易に食い込む。そして、アンビル21とクリンパ22による最終加締め位置において、図3(d)に示すように、一対の加締め片部16bの先端が芯線1内に十分に食い込んだ状態に塑性変形される。 Next, the crimping process of the core wire crimping portion 16 using the crimping jig 20 will be described. The core wire crimping portion 16 is placed on the upper surface 21a of the anvil 21. Next, as shown in FIG. 3A, the crimper 22 is lowered from above. Then, the crimper 22 presses the pair of crimping pieces 16b, and the pair of crimping pieces 16b having a shape that opens outward toward the tip are plastically deformed in a direction that narrows the distance between them. When the crimper 22 is further lowered, as shown in FIG. 3B, it is plastically deformed so that the tips of the pair of crimping pieces 16b abut each other. When the crimper 22 further descends from this state, the tip portion of the pair of crimping piece portions 16b compresses the core wire 1. Due to this compressive force, as shown in FIG. 3C, the strand 1a of the core wire 1 located near the recess 18 enters (escapes) the recess 18. As a result, the filling rate of the core wire 1 in the core wire crimping portion 16 does not increase, so that the tips of the pair of crimping piece portions 16b easily bite into the core wire 1. Then, at the final crimping position by the anvil 21 and the crimper 22, as shown in FIG. 3D, the tips of the pair of crimping piece portions 16b are plastically deformed into a state where they sufficiently bite into the core wire 1.
以上説明したように、圧着端子10は、基底部16aと基底部16aの両側端から延設された一対の加締め片部16bを有し、電線Wの複数の素線1aからなる芯線1を圧着する芯線圧着部16と、加締め片部16bの根本箇所の内面に設けられた窪み部18とを備えている。 As described above, the crimp terminal 10 has a base portion 16a and a pair of crimping piece portions 16b extending from both side ends of the base portion 16a, and has a core wire 1 composed of a plurality of strands 1a of the electric wire W. It includes a core wire crimping portion 16 for crimping, and a recessed portion 18 provided on the inner surface of a root portion of the crimping piece portion 16b.
従って、上記したように、加締め片部16bの加締め変形時に芯線1が窪み部18に入り込むことができるため、芯線圧着部16内の芯線1の充填率が高くならず、各加締め片部16bの先端が確実に芯線1内に入り込むことができる。これにより、芯線圧着部16と芯線1との接触面積が大きくなるため、導通抵抗が小さくなり、又、芯線圧着部16と芯線1間の固着力が強くなるという効果がある。 Therefore, as described above, since the core wire 1 can enter the recessed portion 18 when the crimping piece portion 16b is crimped and deformed, the filling rate of the core wire 1 in the core wire crimping portion 16 does not increase, and each crimping piece The tip of the portion 16b can surely enter the core wire 1. As a result, the contact area between the core wire crimping portion 16 and the core wire 1 is increased, so that the conduction resistance is reduced and the fixing force between the core wire crimping portion 16 and the core wire 1 is strengthened.
窪み部18は、芯線1の軸方向に直交する断面形状が円弧状である。従って、芯線1の素線1aが窪み部18の曲面に沿ってスムーズに窪み部18内に案内されるため、芯線圧着部16内の芯線1の充填率をスムーズに緩和できる。窪み部18は、素線1aが入り込むことができる寸法であれば良く、円弧状以外の形状でも良い。 The recessed portion 18 has an arcuate cross-sectional shape orthogonal to the axial direction of the core wire 1. Therefore, since the strand 1a of the core wire 1 is smoothly guided into the recessed portion 18 along the curved surface of the recessed portion 18, the filling rate of the core wire 1 in the core wire crimping portion 16 can be smoothly relaxed. The recessed portion 18 may have a shape other than an arc shape as long as it has a size that allows the strand 1a to enter.
窪み部18は、加締め片部16bの全幅Dに亘って形成されている。従って、芯線1の素線1aが加締め片部16bの全幅Dに亘って入り込むことができるため、加締め片部16bの一部領域にのみ形成された場合に較べて、芯線圧着部16内の芯線1の充填率を容易に、且つ、確実に緩和できる。 The recessed portion 18 is formed over the entire width D of the crimping piece portion 16b. Therefore, since the wire 1a of the core wire 1 can enter over the entire width D of the crimping piece portion 16b, the inside of the core wire crimping portion 16 is compared with the case where it is formed only in a part of the crimping piece portion 16b. The filling rate of the core wire 1 can be easily and surely relaxed.
実施形態では、窪み部18は、各加締め片部16bに1つであるが、複数であっても良い。 In the embodiment, the number of recesses 18 is one for each crimping piece portion 16b, but there may be a plurality of recesses 18.
実施形態では、芯線1がアルミ製であるが、本発明はアルミ製以外の芯線1(例えば銅合金製)であっても適用できる。 In the embodiment, the core wire 1 is made of aluminum, but the present invention can be applied to a core wire 1 other than aluminum (for example, made of copper alloy).
W 電線
1 芯線
1a 素線
10 圧着端子
16 芯線圧着部
16a 基底部
16b 加締め片部
18 窪み部
W electric wire 1 core wire 1a wire 10 crimp terminal 16 core wire crimping part 16a base part 16b crimping piece part 18 recessed part

Claims (3)

  1. 基底部と前記基底部の両側端から延設された一対の加締め片部を有し、電線の複数の素線からなる芯線を圧着する芯線圧着部と、
    前記加締め片部の根本箇所の内面に設けられた窪み部とを備えたことを特徴とする圧着端子。
    A core wire crimping portion that has a base portion and a pair of crimping pieces extending from both ends of the base portion and crimps a core wire composed of a plurality of strands of an electric wire.
    A crimp terminal provided with a recessed portion provided on the inner surface of the root portion of the crimping piece portion.
  2. 請求項1記載の圧縮端子であって、
    前記窪み部は、前記芯線の軸方向に直交する断面形状が円弧状であることを特徴とする圧着端子。
    The compression terminal according to claim 1.
    The recessed portion is a crimp terminal characterized in that the cross-sectional shape orthogonal to the axial direction of the core wire is arcuate.
  3. 請求項1又は請求項2記載の圧縮端子であって、
    前記窪み部は、前記加締め片部の全幅に亘って形成されていることを特徴とする圧縮端子。
    The compression terminal according to claim 1 or 2.
    The recessed portion is a compression terminal characterized in that it is formed over the entire width of the crimping piece portion.
JP2019131079A 2019-07-16 2019-07-16 Crimping terminal Pending JP2021015759A (en)

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Country Link
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