JP6117264B2 - Manufacturing method of connection terminal - Google Patents

Manufacturing method of connection terminal Download PDF

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JP6117264B2
JP6117264B2 JP2015054811A JP2015054811A JP6117264B2 JP 6117264 B2 JP6117264 B2 JP 6117264B2 JP 2015054811 A JP2015054811 A JP 2015054811A JP 2015054811 A JP2015054811 A JP 2015054811A JP 6117264 B2 JP6117264 B2 JP 6117264B2
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terminal
connection
pair
resin
electric wire
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JP2015146322A (en
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亮輔 宇野
亮輔 宇野
晋司 兒玉
晋司 兒玉
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Yazaki Corp
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Description

本発明は、電線接続部と電線の接続箇所を樹脂被覆部によって被覆した接続端子の製造方法に関する。   The present invention relates to a method of manufacturing a connection terminal in which a connection portion between an electric wire connection portion and an electric wire is covered with a resin coating portion.

電線接続部と電線の接続箇所を樹脂被覆部によって被覆した接続端子が従来より種々提案されている（例えば特許文献１、特許文献２参照）。かかる接続端子の一従来例が図１１〜図１３に示されている。   Conventionally, various connection terminals have been proposed in which a connection portion between an electric wire connection portion and an electric wire is covered with a resin coating portion (see, for example, Patent Document 1 and Patent Document 2). One conventional example of such connection terminals is shown in FIGS.

図１１及び図１２に示すように、接続端子１００は、相手端子が接続される端子接続部１０１と、電線（図示せず）が接続された電線接続部１１０と、端子接続部１０１と電線接続部１１０の間を連結する首部１２０とを備えている。端子接続部１０１、電線接続部１１０及び首部１２０は、１枚の導電性金属板を折り曲げることによって形成されている。   As shown in FIGS. 11 and 12, the connection terminal 100 includes a terminal connection portion 101 to which a mating terminal is connected, a wire connection portion 110 to which an electric wire (not shown) is connected, and the terminal connection portion 101 and the electric wire connection. The neck part 120 which connects between the parts 110 is provided. The terminal connection part 101, the wire connection part 110, and the neck part 120 are formed by bending one conductive metal plate.

端子接続部１０１は、四角形の筒形状である。この筒形状の内部に相手端子が挿入される。電線接続部１１０は、Ｕ字状の囲み壁１１１を有する。この囲み壁１１１の両側端の上端面より一対の第１電線加締め部１１３と第２電線加締め部１１４が突設されている。一対の第１電線加締め部１１３で電線Ｗの芯線１５０が加締めによって圧着され、第２電線加締め部１１４で電線Ｗの被覆外皮１５１で覆われた箇所が加締めによって圧着されている。   The terminal connection part 101 has a rectangular cylindrical shape. The mating terminal is inserted into this cylindrical shape. The electric wire connection part 110 has a U-shaped surrounding wall 111. A pair of first electric wire crimping portions 113 and a second electric wire crimping portion 114 project from upper end surfaces on both side ends of the surrounding wall 111. The core wire 150 of the electric wire W is crimped by caulking at the pair of first electric wire crimping portions 113, and the portion covered with the outer sheath 151 of the electric wire W is crimped by caulking at the second electric wire crimping portion 114.

首部１２０は、底面壁１２１とこの底面壁１２１の両側端より立設された一対の側面壁１２２とを有する。底面壁１２１と一対の側面壁１２２は、端子接続部１０１と電線接続部１１０の各壁より連続して形成されている。一対の側面壁１２２は、端子接続部１０１から電線接続部１１０に向かって互いの間隔を徐々に狭くするよう傾斜している。首部１２０によって、端子接続部１０１の幅寸法が電線接続部１１０の幅寸法まで絞られている。   The neck 120 has a bottom wall 121 and a pair of side walls 122 that are erected from both ends of the bottom wall 121. The bottom wall 121 and the pair of side walls 122 are formed continuously from the walls of the terminal connection portion 101 and the wire connection portion 110. A pair of side wall 122 inclines so that a mutual space | interval may be narrowed gradually toward the electric wire connection part 110 from the terminal connection part 101. FIG. The width of the terminal connecting portion 101 is reduced to the width of the wire connecting portion 110 by the neck 120.

電線接続部１１０と電線Ｗの接続箇所は、樹脂被覆部１３０によって被われている。樹脂被覆部１３０は、樹脂の射出成形によって作製される。   The connection portion between the electric wire connecting portion 110 and the electric wire W is covered with a resin coating portion 130. The resin coating part 130 is produced by resin injection molding.

つまり、図１３に示すように、電線Ｗが接続された接続端子１００を樹脂成型用の金型１４０にセットする。金型１４０は、下金型１４１と上金型（図示せず）からなる。図１３では、接続端子１００を下金型１４１にセットした状態を示す。次に、下金型１４１と上金型（図示せず）内のキャビティ１４１ａ，（図示せず）に樹脂を流し込み、流し込んだ樹脂が固化することによって樹脂被覆部１３０が作製される。   That is, as shown in FIG. 13, the connection terminal 100 to which the electric wire W is connected is set in a mold 140 for resin molding. The mold 140 includes a lower mold 141 and an upper mold (not shown). FIG. 13 shows a state in which the connection terminal 100 is set in the lower mold 141. Next, resin is poured into the cavity 141a (not shown) in the lower mold 141 and the upper mold (not shown), and the poured resin is solidified to produce the resin coating portion 130.

ここで、樹脂成形の際には、首部１２０内には金型１４０の樹脂堰止め用駒部１４２（図１２にて仮想線で示す）が入り込む。樹脂堰止め用駒部１４２の両側面は、一対の側面壁１２２に対応する傾斜面に形成されている。樹脂堰止め用駒部１４２は、溶融樹脂が電線接続部１１０側から端子接続部１０２側に向かって流れ込まないように堰き止める。   Here, at the time of resin molding, the resin damming piece 142 (shown by phantom lines in FIG. 12) of the mold 140 enters the neck 120. Both side surfaces of the resin damming piece 142 are formed as inclined surfaces corresponding to the pair of side walls 122. Resin damming piece 142 dams the molten resin so that the molten resin does not flow from the wire connecting part 110 side toward the terminal connecting part 102 side.

上記従来例によれば、例えば、接続端子１００と電線Ｗの芯線ｗ１とが異なる金属材質である場合（例えば、銅製の接続端子１とアルミニュウム製の電線Ｗ）、双方の接続箇所に水等が入り込むと双方の電位差で電流が流れて腐食が発生するため、樹脂被覆部１３０によってこのような腐食を防止する。   According to the above conventional example, for example, when the connecting terminal 100 and the core wire w1 of the electric wire W are different metal materials (for example, the connecting terminal 1 made of copper and the electric wire W made of aluminum), water or the like is present at both connection points. When entering, a current flows due to the potential difference between the two and corrosion occurs, so that the resin coating portion 130 prevents such corrosion.

特開２０１０−９７７０４号公報JP 2010-97704 A 特開２０１０−１３５１２１号公報JP 2010-135121 A

しかしながら、前記従来例の接続端子１００では、首部１２０の一対の側面壁１２２が傾斜しているため、図１４（ａ）に示すように、首部１２０の所定位置より端子接続部１０１側にずれた位置に樹脂堰止め用駒部１４２がセットされると、樹脂堰止め用駒部１４２と各側面壁１２２の間に隙間ｄができ、溶融樹脂を確実に堰き止めることができない。図１４（ｂ）に示すように、首部１０４の所定位置より電線接続部１０３側にずれた位置に樹脂堰止め用駒部１４２がセットされると、樹脂堰止め用駒部１４２が各側面壁１２２の上端面に突き当たり、樹脂堰止め用駒部１４２をセットすることができない。その際に、樹脂堰止め用駒部１２２や側面壁１０４ｂが損傷等するおそれがある。従って、樹脂堰止め用駒部１４２を高精度に位置決め管理する必要があり、樹脂堰止め部１４２の位置決め管理が面倒であるという問題があった。   However, in the connection terminal 100 of the conventional example, since the pair of side walls 122 of the neck 120 are inclined, as shown in FIG. 14A, the neck 120 is shifted from the predetermined position to the terminal connection 101 side. When the resin damming piece 142 is set at the position, a gap d is formed between the resin damming piece 142 and each side wall 122, and the molten resin cannot be reliably dammed. As shown in FIG. 14B, when the resin damming piece 142 is set at a position shifted from the predetermined position of the neck 104 to the wire connecting portion 103 side, the resin damming piece 142 is moved to each side wall. It hits the upper end surface of 122, and the resin damming piece 142 cannot be set. At that time, the resin damming piece 122 and the side wall 104b may be damaged. Therefore, it is necessary to position and manage the resin damming piece 142 with high accuracy, and there is a problem that the positioning management of the resin damming portion 142 is troublesome.

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、樹脂堰止め用駒部の位置決め管理が容易である接続端子の製造方法を提供することを目的とする。   Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a method of manufacturing a connection terminal that facilitates positioning management of a resin damming piece.

本発明は、相手端子が接続される端子接続部と、電線が接続された電線接続部と、前記端子接続部と前記電線接続部の間を連結する首部とを備え、前記電線接続部と前記電線の接続箇所が樹脂被覆部によって被覆され、前記首部は、底面壁と前記底面壁の両側より立設された一対の側面壁とを有し、一対の前記側面壁は、互いの間隔が同じである平行壁部を有する接続端子の製造方法であって、前記樹脂被覆部の成型時には、前記電線が接続された前記接続端子を樹脂成型用の金型内にセットし、前記首部の一対の前記平行壁部の位置に、前記端子接続部側への樹脂の流入を阻止する前記金型の樹脂堰止め用駒部を配置すると共に、前記電線と前記接続端子をそれぞれ適正位置に保持部で保持することを特徴とする接続端子の製造方法である。   The present invention includes a terminal connection portion to which a mating terminal is connected, a wire connection portion to which an electric wire is connected, and a neck portion that connects between the terminal connection portion and the wire connection portion, and the wire connection portion and the The connection part of the electric wire is covered with a resin coating part, the neck part has a bottom wall and a pair of side walls erected from both sides of the bottom wall, and the pair of side walls have the same distance from each other In the method of manufacturing a connection terminal having a parallel wall portion, when molding the resin coating portion, the connection terminal to which the wire is connected is set in a mold for resin molding, and a pair of neck portions In the position of the parallel wall portion, a resin damming piece portion for blocking the resin flow into the terminal connection portion side is disposed, and the electric wire and the connection terminal are respectively held at appropriate positions by holding portions. It is a manufacturing method of a connection terminal characterized by holding

接続端子を製造する場合、電線接続部に電線を接続する電線接続時には、首部の一対の平行壁部を適正位置に首部矯正部で矯正することが好ましい。首部矯正部は、一対のスリットを有し、一対のスリットを首部の一対の前記平行壁部に挿入することが好ましい。樹脂堰止め用駒部は、接続端子を適正位置に保持する保持部を兼用することが好ましい。   When manufacturing the connection terminal, it is preferable to correct the pair of parallel wall portions of the neck at an appropriate position by the neck correction portion when connecting the electric wire to the electric wire connection portion. The neck correction part preferably has a pair of slits, and the pair of slits are preferably inserted into the pair of parallel wall parts of the neck. It is preferable that the resin damming piece part also serves as a holding part that holds the connection terminal in an appropriate position.

本発明によれば、首部は、互いの間隔が同じである一対の平行壁部を有するため、この一対の平行壁部の範囲内に樹脂堰止め用駒部を配置するため、樹脂堰止め用駒部は適正にセットされる。従って、樹脂堰止め用駒部の位置決め管理が容易である。   According to the present invention, since the neck portion has a pair of parallel wall portions having the same interval, the resin damming piece portion is disposed within the range of the pair of parallel wall portions. The piece is set properly. Therefore, the positioning management of the resin damming piece is easy.

本発明の一実施形態を示し、接続端子の斜視図である。1 is a perspective view of a connection terminal according to an embodiment of the present invention. 本発明の一実施形態を示し、（ａ）は電線接続前の接続端子本体の斜視図、（ｂ）は電線接続前の接続端子本体の平面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, in which (a) is a perspective view of a connection terminal body before wire connection, and (b) is a plan view of the connection terminal body before wire connection. 本発明の一実施形態を示し、（ａ）は電線圧着装置に接続端子をセットした状態を示す側面図、（ｂ）は（ａ）のＡ−Ａ線断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a side view illustrating a state in which a connection terminal is set in a wire crimping apparatus, and FIG. 本発明の一実施形態を示し、樹脂成型用の下金型に接続端子にセットした状態を示す平面図である。It is a top view which shows one Embodiment of this invention and shows the state set to the connection terminal in the lower metal mold | die for resin molding. 本発明の一実施形態を示し、樹脂成型用の金型に接続端子をセットした状態を示す側面図である。It is a side view which shows one Embodiment of this invention and shows the state which set the connection terminal to the metal mold | die for resin molding. 本発明の一実施形態を示し、図５のＢ−Ｂ線断面図である。FIG. 6 shows an embodiment of the present invention and is a cross-sectional view taken along the line BB of FIG. 5. 本発明の一実施形態を示し、図６のＣ部拡大図である。FIG. 7 shows an embodiment of the present invention and is an enlarged view of part C in FIG. 6. 本発明の一実施形態を示し、図６のＤ部拡大図である。FIG. 7 shows an embodiment of the present invention and is an enlarged view of a D part in FIG. 6. 本発明の一実施形態を示し、図８のＥ−Ｅ線断面図である。FIG. 9 is a cross-sectional view taken along the line EE of FIG. 8, showing an embodiment of the present invention. 本発明の一実施形態を示し、図９のＦ−Ｆ線断面図である。FIG. 10 shows an embodiment of the present invention and is a cross-sectional view taken along line FF in FIG. 9. 従来例を示し、接続端子の斜視図である。It is a perspective view of a connection terminal which shows a conventional example. 従来例を示し、電線接続前の接続端子本体の平面図である。It is a top view of the connection terminal main body which shows a prior art example and is not connected to an electric wire. 従来例を示し、樹脂成型用の下金型に接続端子にセットした状態を示す平面図である。It is a top view which shows the prior art example and shows the state set to the connection terminal in the lower metal mold | die for resin molding. 従来例を示し、（ａ）は樹脂堰止め用駒部が端子接続部側に位置ずれした場合を示す平面図、（ｂ）は樹脂堰止め用駒部が電線接続部側に位置ずれした場合を示す平面図である。A conventional example is shown, (a) is a plan view showing the case where the resin damming piece is displaced to the terminal connection part side, (b) is the case where the resin damming piece is displaced to the wire connection part side FIG.

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１０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、接続端子１は、相手端子（図示せず）が接続される端子接続部２と、電線Ｗが接続された電線接続部１０と、端子接続部２と電線接続部１０の間を連結する首部２０とを備えている。端子接続部２、電線接続部１０及び首部２０は、１枚の導電性金属板である銅合金製の板を折り曲げることによって形成されている。   1 to 10 show an embodiment of the present invention. As shown in FIGS. 1 and 2, the connection terminal 1 includes a terminal connection portion 2 to which a mating terminal (not shown) is connected, a wire connection portion 10 to which an electric wire W is connected, a terminal connection portion 2 and an electric wire. And a neck portion 20 that connects between the connection portions 10. The terminal connection portion 2, the wire connection portion 10, and the neck portion 20 are formed by bending a copper alloy plate that is a single conductive metal plate.

端子接続部２は、四角形の筒部３と、この筒部３内に配置された弾性接触片部４（図３（ａ）に示す）とを有する。筒部３に相手端子が挿入されると、相手端子が弾性接触片部４の撓み復帰力によって密着され、電気的に接続される。   The terminal connection portion 2 includes a rectangular tube portion 3 and an elastic contact piece portion 4 (shown in FIG. 3A) disposed in the tube portion 3. When the mating terminal is inserted into the cylindrical portion 3, the mating terminal is brought into close contact with the bending return force of the elastic contact piece 4 and is electrically connected.

電線接続部１０は、Ｕ字状の囲み壁１１を有する。この囲み壁１１の両側端の上端面からは、一対の第１電線加締め部１３と一対の第２電線加締め部１４が突設されている。一対の第１電線加締め部１３で電線Ｗの露出された芯線４０が加締めによって圧着されている。一対の第２電線加締め部１４で電線Ｗの絶縁外皮４１で覆われた箇所が加締めによって圧着されている。電線Ｗの芯線４０は、アルミニュウム材である。   The electric wire connection part 10 has a U-shaped surrounding wall 11. A pair of first electric wire crimping portions 13 and a pair of second electric wire crimping portions 14 project from upper end surfaces at both ends of the surrounding wall 11. The core wire 40 where the electric wire W is exposed is crimped by caulking by the pair of first electric wire caulking portions 13. A portion of the electric wire W covered with the insulating sheath 41 is crimped by caulking by the pair of second electric wire caulking portions 14. The core wire 40 of the electric wire W is an aluminum material.

首部２０は、底面壁２１とこの底面壁２１の両側端より立設された一対の側面壁２２とを有する。底面壁２１と一対の側面壁２２は、端子接続部２と電線接続部１０の各壁より連続して形成されている。   The neck portion 20 includes a bottom wall 21 and a pair of side walls 22 erected from both side ends of the bottom wall 21. The bottom wall 21 and the pair of side walls 22 are formed continuously from the walls of the terminal connection portion 2 and the wire connection portion 10.

一対の側面壁２２は、互いの間隔が同じである平行壁部２２ａと、互いの間隔が変化する傾斜壁部２２ｂとから構成されている。各平行壁部２２ａは、図２（ｂ）、図１０に示すように、その長さ寸法Ｌが下記する樹脂成型の金型６０の樹脂堰止め用駒部６３の幅Ｗよりも大きく設定されている。一対の傾斜壁部２２ｂは、端子接続部２から電線接続部１０に向かって互いの間隔を徐々に狭くする方向に傾斜している。一対の傾斜壁部２２ｂによって、端子接続部１０１の幅寸法が電線接続部１１０の幅寸法まで絞られている。   A pair of side wall 22 is comprised from the parallel wall part 22a whose mutual space | interval is the same, and the inclination wall part 22b from which a mutual space | interval changes. As shown in FIGS. 2B and 10, each parallel wall portion 22 a is set such that its length L is larger than the width W of the resin damming piece 63 of the resin molding die 60 described below. ing. The pair of inclined wall portions 22b are inclined in a direction of gradually narrowing the distance from the terminal connection portion 2 toward the wire connection portion 10. The width dimension of the terminal connection part 101 is reduced to the width dimension of the wire connection part 110 by the pair of inclined wall parts 22b.

電線接続部１０と電線Ｗの接続箇所は、樹脂被覆部３０によって被われている。樹脂被覆部３０は、電線接続部１０と電線Ｗの端末部の外周を完全に覆っている。樹脂被覆部３０によって、電線接続部１０と電線Ｗの接続箇所に水等が浸入することに起因する腐食が防止される。樹脂被覆部３０は、下記するように、金型６０による樹脂射出成形によって作製される。   The connection portion between the electric wire connecting portion 10 and the electric wire W is covered with the resin coating portion 30. The resin coating portion 30 completely covers the outer periphery of the wire connection portion 10 and the terminal portion of the wire W. The resin coating portion 30 prevents corrosion caused by water or the like entering the connection portion between the wire connection portion 10 and the wire W. The resin coating portion 30 is produced by resin injection molding using a mold 60 as described below.

次に、接続端子１の作製手順を説明する。先ず、金属板のプレス成形等によって図２（ａ）、（ｂ）に示す接続端子１を作製する。次に、接続端子１と電線Ｗの端末部を接続する電線接続工程を行う。つまり、電線接続工程では、図３（ａ）に示すように、図２（ａ）、（ｂ）の接続端子１と電線Ｗの端末部を電線圧着装置５０にセットする。電線圧着装置５０は、首部矯正部５１を有する。首部矯正部５１は、図３（ｂ）に示すように、垂直方向に延びる一対のスリット５２を有する。この一対のスリット５２に首部２０の一対の平行壁部２２ａが挿入される。そして、電線圧着装置５０の第１加締め部５３と第２加締め部５４が第１電線加締め部１３と第２電線加締め部１４を所定の形態に加締めることによって電線Ｗが圧着される。首部２０の一対の平行壁部２２は、加締め加工時の曲げ力を受けて変形することはなく、首部矯正部５１によって垂直状態を保持する。   Next, a manufacturing procedure of the connection terminal 1 will be described. First, the connection terminal 1 shown in FIGS. 2A and 2B is manufactured by press molding of a metal plate or the like. Next, the electric wire connection process which connects the connection terminal 1 and the terminal part of the electric wire W is performed. That is, in the electric wire connecting step, as shown in FIG. 3A, the connection terminal 1 and the terminal portion of the electric wire W in FIGS. 2A and 2B are set in the electric wire crimping device 50. The electric wire crimping device 50 includes a neck correction unit 51. As shown in FIG. 3B, the neck correction unit 51 has a pair of slits 52 extending in the vertical direction. The pair of parallel wall portions 22 a of the neck portion 20 are inserted into the pair of slits 52. And the electric wire W is crimped | bonded by the 1st crimping part 53 and the 2nd crimping part 54 of the electric wire crimping apparatus 50 crimping the 1st electric wire crimping part 13 and the 2nd electric wire crimping part 14 to a predetermined form. The The pair of parallel wall portions 22 of the neck portion 20 is not deformed by receiving a bending force at the time of caulking, and is kept vertical by the neck portion correcting portion 51.

次に、金型６０による樹脂成型工程を行う。先ず、金型６０の構成を説明する。金型６０は、下金型６１と上金型６２を有する。上金型６２には、首部２０の一対の平行壁部２２ａに対応する位置に樹脂堰止め用駒部６３が設けられている。樹脂堰止め用駒部６３は、一対の平行壁部２２ａの内部に隙間なく入り込む寸法に設定されている。樹脂堰止め用駒部６３の両側面は、従来例とは異なり、一対の平行壁部２２ａに対応して互いに平行面に設定されている。樹脂堰止め用駒部６３の挿入先端の角部は、図１０に示すように、首部２０の内面の角形状に対応し、アール形状ではなく直角形状に設定されている。これにより、角部の箇所にも隙間ができないようになっている。   Next, a resin molding process using the mold 60 is performed. First, the configuration of the mold 60 will be described. The mold 60 includes a lower mold 61 and an upper mold 62. The upper mold 62 is provided with a resin damming piece 63 at a position corresponding to the pair of parallel wall portions 22 a of the neck 20. The resin damming piece 63 is set to have a size that enters the pair of parallel wall portions 22a without any gap. Unlike the conventional example, both side surfaces of the resin damming piece 63 are set parallel to each other in correspondence with the pair of parallel wall portions 22a. As shown in FIG. 10, the corner portion at the insertion tip of the resin damming piece portion 63 corresponds to the corner shape of the inner surface of the neck portion 20, and is set to a right-angle shape instead of a round shape. As a result, there is no gap at the corners.

樹脂堰止め用駒部６３は、首部２０の底面壁２１を押圧し、接続端子１を適正位置に保持する端子保持部を兼用する。金型６０は、電線Ｗを上下方向より挟持し、電線Ｗを適正位置に保持する電線保持部６４を有する。つまり、金型６０は、図７に示すように、電線保持部６４によって電線Ｗを適正位置に保持し、図８に示すように、樹脂堰止め用駒部６３によって接続端子１を適正位置に保持する。このような構成の金型６０を使って樹脂成型を行う。   The resin damming piece 63 also serves as a terminal holding part that presses the bottom wall 21 of the neck 20 and holds the connection terminal 1 in an appropriate position. The mold 60 includes an electric wire holding portion 64 that holds the electric wire W from the vertical direction and holds the electric wire W at an appropriate position. That is, the mold 60 holds the electric wire W in an appropriate position by the electric wire holding part 64 as shown in FIG. 7, and the connecting terminal 1 is put in an appropriate position by the resin damming piece part 63 as shown in FIG. Hold. Resin molding is performed using the mold 60 having such a configuration.

樹脂成型工程では、図４に示すように、電線Ｗが接続された接続端子１を樹脂成型用の金型６０にセットする（図４では下金型６１にセットした状態を示す）。次に、金型６０内のキャビティ６１ａ，６２ａに樹脂を流し込み、流し込んだ樹脂が固化することによって樹脂被覆部３０が作製される。   In the resin molding step, as shown in FIG. 4, the connection terminal 1 to which the electric wire W is connected is set in a resin molding die 60 (FIG. 4 shows a state where it is set in the lower die 61). Next, a resin is poured into the cavities 61a and 62a in the mold 60, and the poured resin is solidified to produce the resin coating portion 30.

樹脂成形の際には、図９及び図１０に示すように、首部２０内には金型６０の樹脂堰止め用駒部６３が入り込む。首部２０は、互いの間隔が同じである一対の平行壁部２２ａを有するため、この一対の平行壁部２２ａの範囲内に樹脂堰止め用駒部６３を配置すれば、樹脂堰止め用駒部６３は適正にセットされる。つまり、従来例のように、樹脂堰止め用駒部６３と一対の側面壁２２の内面との間に隙間が発生したり、樹脂堰止め用駒部６３が各側面壁２２に突き当たったりせず、樹脂堰止め用駒部６３が一対の平行壁部２２ａ内に隙間なく適正にセットされる。従って、樹脂堰止め用駒部６３の位置決め管理が容易である。   In resin molding, as shown in FIGS. 9 and 10, the resin damming piece 63 of the mold 60 enters the neck 20. Since the neck portion 20 has a pair of parallel wall portions 22a having the same distance from each other, if the resin damming piece portion 63 is disposed within the range of the pair of parallel wall portions 22a, the resin damming piece portion 63 is set properly. That is, unlike the conventional example, a gap is not generated between the resin damming piece 63 and the inner surfaces of the pair of side walls 22, and the resin damming piece 63 does not hit each side wall 22. The resin damming piece 63 is properly set without a gap in the pair of parallel wall portions 22a. Therefore, the positioning management of the resin damming piece 63 is easy.

平行壁部２２ａの長さ寸法Ｌは、樹脂成型の金型６０の樹脂堰止め用駒部６３の幅Ｗよりも大きく設定されている。従って、樹脂堰止め用駒部６３を容易に、且つ、確実に一対の平行壁部２２ａの範囲にセットできる。   The length L of the parallel wall portion 22a is set to be larger than the width W of the resin damming piece 63 of the resin molding die 60. Therefore, the resin damming piece 63 can be easily and reliably set in the range of the pair of parallel wall portions 22a.

樹脂被覆部３０の成型時には、図６に示すように、電線Ｗと接続端子１をそれぞれ適正位置に電線保持部６４と端子保持部である樹脂堰止め用駒部６３によって保持するので、接続端子１の曲げ変形（ベンドアップ）を極力抑制できる。樹脂堰止め用駒部６３は、端子保持部を兼用するため、構成の簡略化を図ることができる。   As shown in FIG. 6, when the resin coating portion 30 is molded, the electric wire W and the connection terminal 1 are held at appropriate positions by the electric wire holding portion 64 and the resin damming piece portion 63 as the terminal holding portion. 1 bending deformation (bend-up) can be suppressed as much as possible. Since the resin damming piece 63 also serves as a terminal holding portion, the configuration can be simplified.

電線接続部１０に電線Ｗを圧着接続する電線接続時には、図３（ａ）、（ｂ）に示すように、首部２０の一対の平行壁部２２ａを適正位置に首部矯正部５１によって矯正するので、後工程の樹脂成型工程では、図９に示すように、樹脂堰止め用駒部６３を確実に、且つ、隙間なく一対の平行壁部２２ａ内に配置することができる。   When the electric wire W is connected to the electric wire connecting portion 10 by crimping, as shown in FIGS. 3A and 3B, the pair of parallel wall portions 22a of the neck portion 20 are corrected to the proper positions by the neck correcting portion 51. In the subsequent resin molding step, as shown in FIG. 9, the resin damming piece 63 can be reliably disposed in the pair of parallel wall portions 22 a without a gap.

１ 接続端子
２ 端子接続部
１０ 電線接続部
２０ 首部
２１ 底面部
２２ 側面部
２２ａ 平行壁部
５１ 首部矯正部
６０ 金型
６３ 樹脂堰止め用駒部（保持部）
６４ 電線保持部（保持部）
Ｗ 電線 DESCRIPTION OF SYMBOLS 1 Connection terminal 2 Terminal connection part 10 Wire connection part 20 Neck part 21 Bottom face part 22 Side part 22a Parallel wall part 51 Neck part correction part 60 Mold 63 Resin damming piece part (holding part)
64 Electric wire holding part (holding part)
W electric wire

Claims (4)

相手端子が接続される端子接続部と、電線が接続された電線接続部と、前記端子接続部と前記電線接続部の間を連結する首部とを備え、前記電線接続部と前記電線の接続箇所が樹脂被覆部によって被覆され、前記首部は、底面壁と前記底面壁の両側より立設された一対の側面壁とを有し、一対の前記側面壁は、互いの間隔が同じである平行壁部を有する接続端子の製造方法であって、
前記樹脂被覆部の成型時には、前記電線が接続された前記接続端子を樹脂成型用の金型内にセットし、前記首部の一対の前記平行壁部の位置に、前記端子接続部側への樹脂の流入を阻止する前記金型の樹脂堰止め用駒部を配置すると共に、前記電線と前記接続端子をそれぞれ適正位置に保持部で保持することを特徴とする接続端子の製造方法。 A terminal connection portion to which a mating terminal is connected; a wire connection portion to which an electric wire is connected; and a neck portion that connects between the terminal connection portion and the wire connection portion. Is covered with a resin coating, and the neck has a bottom wall and a pair of side walls erected from both sides of the bottom wall, and the pair of side walls are parallel walls having the same distance from each other A method of manufacturing a connection terminal having a portion,
At the time of molding the resin coating portion, the connection terminal to which the electric wire is connected is set in a mold for resin molding, and the resin to the terminal connection portion side is placed at the position of the pair of parallel wall portions of the neck portion. A method of manufacturing a connection terminal, wherein a resin damming piece portion for preventing the inflow of the mold is disposed, and the electric wire and the connection terminal are respectively held by holding portions at appropriate positions. 請求項１記載の接続端子の製造方法であって、
前記電線接続部に前記電線を接続する電線接続時には、前記首部の一対の前記平行壁部を適正位置に首部矯正部で矯正することを特徴とする接続端子の製造方法。 It is a manufacturing method of the connecting terminal according to claim 1,
A method of manufacturing a connection terminal, comprising: correcting a pair of parallel wall portions of the neck portion at an appropriate position by a neck portion correcting portion when connecting the wire to the wire connecting portion. 請求項２記載の接続端子の製造方法であって、
前記首部矯正部は、一対のスリットを有し、一対の前記スリットを前記首部の一対の前記平行壁部に挿入することを特徴とする接続端子の製造方法。 It is a manufacturing method of the connecting terminal according to claim 2,
The neck correction part has a pair of slits, and the pair of slits are inserted into the pair of parallel wall parts of the neck part. 請求項１〜請求項３記載のいずれかに記載の接続端子の製造方法であって、
前記樹脂堰止め用駒部は、前記接続端子を適正位置に保持する保持部を兼用することを特徴とする接続端子の製造方法。 It is a manufacturing method of the connecting terminal in any one of Claims 1-3,
The resin damming piece portion also serves as a holding portion for holding the connection terminal in an appropriate position.
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