JP2014213589A

JP2014213589A - Mold of mold resin

Info

Publication number: JP2014213589A
Application number: JP2013095255A
Authority: JP
Inventors: 正裕近藤; Masahiro Kondo
Original assignee: Fujikura Ltd
Current assignee: Fujikura Ltd
Priority date: 2013-04-30
Filing date: 2013-04-30
Publication date: 2014-11-17

Abstract

PROBLEM TO BE SOLVED: To provide molds of a mold resin which suppress generation of breakage of a cable.SOLUTION: A first electric wire holding wall part 211 is provided on a lower mold 210, and has a depression 211a having a shape following an outer shape of a cable 1 which adheres to the cable 1 from one side of a mold-closing direction when molds are closed. A first electric wire facing wall part 221 is provided on an upper mold 220, and adheres to the first electric wire holding wall part 211 while maintaining a gap S1 on the other side of the mold-closing direction to the cable 1 when the molds are closed. A second electric wire holding wall part 222 is provided continuously on an upper mold 220 outside of the first electric wire holding wall part 211, has a depression 222a having the shape following the outer shape of the cable 1 which adheres to the cable 1 from the other side of the mold-closing direction when the molds are closed, and adheres to an outside wall face of the first electric wire facing wall part 221 by an inside wall face thereof to close the gap S1.

Description

この発明は、被覆電線の先端に端子が接続された状態で前記端子と前記被覆電線の端末部とを被覆するモールド樹脂の成形金型に関する。 The present invention relates to a molding resin mold that covers the terminal and a terminal portion of the covered electric wire in a state where the terminal is connected to the tip of the covered electric wire.

自動車等の被水領域に使用される被覆電線には、その端末から絶縁被覆内に水が浸入しないように防水処理を施す必要がある。そのため、被水領域には、従来から端子が取り付けられた端末に対してモールド処理が施された被覆電線が使用されることが多い。そして、このモールド処理を行う際、金型内から樹脂が漏れ出さないようにするため、金型で被覆電線を押しつぶすことがなされている（例えば、特許文献１参照）。このように被覆電線を金型で押し潰すと、被覆電線に破損が生じ易い。 It is necessary to waterproof the covered electric wire used in a wet area such as an automobile so that water does not enter the insulating coating from the terminal. For this reason, a covered electric wire in which a molding process is applied to a terminal to which a terminal is conventionally attached is often used in the wet area. And when performing this mold process, in order not to leak resin from the inside of a metal mold | die, a covered electric wire is crushed with a metal mold | die (for example, refer patent document 1). When the covered electric wire is crushed with a mold in this way, the covered electric wire is easily damaged.

特開平８−２５８０６３号公報Japanese Patent Laid-Open No. 8-258063

本発明は、上述した従来技術による問題点を解消するものであり、被覆電線の破損の発生を抑制したモールド樹脂の成形金型を提供することを目的とする。 An object of the present invention is to solve the above-mentioned problems caused by the prior art, and to provide a molding die of a mold resin that suppresses the occurrence of breakage of a covered electric wire.

本発明の実施形態に係るモールド樹脂の成形金型は、被覆電線の端末部を被覆するモールド樹脂の成形金型であって、第１の型と、前記第１の型に対して型締めされて前記第１の型と共に前記被覆電線の端末部を収容し、前記端末部を覆う前記モールド樹脂を成形するキャビティを形成する第２の型とを備え、前記第１の型及び前記第２の型は、前記被覆電線を前記キャビティの内部から外側に導出する貫通部を形成した電線貫通壁部を有し、前記電線貫通壁部は、前記第１の型に設けられ型締め時に型締め方向の一方の側から前記被覆電線に密着する前記被覆電線の外形に沿った形状の第１の窪みを有する第１電線保持壁部と、前記第２の型に設けられ型締め時に前記被覆電線に対して型締め方向の他方の側に第１の隙間を保持した状態で前記第１電線保持壁部と密着する第１電線対向壁部と、前記第２の型に前記第１電線保対向部の外側に連続して設けられ型締め時に型締め方向の他方の側から前記被覆電線に密着する前記被覆電線の外形に沿った形状の第２の窪みを有すると共に、その内側の壁面で前記第１電線対向壁部の外側の壁面と密着して前記第１の隙間を閉塞する第２電線保持壁部とを備えたことを特徴とする。 A molding resin molding die according to an embodiment of the present invention is a molding resin molding die that covers a terminal portion of a covered electric wire, and is clamped to the first die and the first die. And a second mold for accommodating a terminal portion of the covered electric wire together with the first mold and forming a cavity for molding the mold resin covering the terminal portion, and the first mold and the second mold The mold has an electric wire through wall portion in which a through portion for leading the covered electric wire from the inside of the cavity to the outside is formed, and the electric wire through wall portion is provided in the first die and is clamped in the mold clamping direction. A first electric wire holding wall portion having a first recess having a shape along the outer shape of the covered electric wire that is in close contact with the covered electric wire from one side of the first electric wire; and With the first gap held on the other side in the mold clamping direction The first electric wire facing wall portion that is in close contact with the first electric wire holding wall portion, and provided continuously to the outside of the first electric wire holding facing portion on the second mold from the other side in the mold clamping direction during mold clamping. While having the 2nd hollow of the shape along the external shape of the said covered electric wire closely_contact | adhered to the said covered electric wire, it closely_contact | adheres to the wall surface of the outer side of the said 1st electric wire opposing wall part on the inner wall surface, and the said 1st clearance gap is formed. And a second electric wire holding wall portion to be closed.

このモールド樹脂の成形金型によれば、第１電線保持壁部、第１電線対向壁部、及び第２電線保持壁部により被覆電線を押し潰すことなく第１の隙間を塞ぎ、キャビティからの樹脂の漏れを防止することができる。したがって、被覆電線は押し潰されないため、その破損の発生を抑制できる。 According to this molding resin molding die, the first electric wire holding wall, the first electric wire facing wall, and the second electric wire holding wall close the first gap without crushing the covered electric wire, Resin leakage can be prevented. Therefore, since the covered electric wire is not crushed, the occurrence of breakage can be suppressed.

また、本発明の一つの実施形態において、前記電線貫通壁部は、前記第１の型に前記第１電線保持壁部の外側に連続して設けられ型締め時に前記被覆電線に対して型締め方向の一方の側に第２の隙間を保持した状態で前記第２電線保持壁部と密着する第２電線対向壁部と、前記第１の型に前記第２電線対向壁部の外側に連続して設けられ型締め時に型締め方向の一方の側から前記被覆電線に密着する前記被覆電線の外形に沿った形状の第３の窪みを有すると共に、その内側の壁面で前記第２電線対向壁部の外側の壁面と密着して前記第２の隙間を閉塞する第３電線保持壁部と、前記第２の型に前記第２電線保持壁部の外側に連続して設けられ型締め時に前記被覆電線に対して型締め方向の他方の側に第３の隙間を保持した状態で前記第３電線保持壁部と密着する第３電線対向壁部とを更に備える。このような形態によれば、第２電線対向壁部、第３電線保持壁部、及び第２電線保持壁部により被覆電線を押し潰すことなく第２の隙間を塞ぎ、キャビティからの樹脂の漏れを更に防止できる。 In one embodiment of the present invention, the wire penetration wall portion is provided continuously to the outside of the first wire holding wall portion in the first mold, and is clamped to the covered wire during mold clamping. A second electric wire facing wall portion that is in close contact with the second electric wire holding wall portion in a state where the second gap is held on one side of the direction, and the first die is continuous to the outside of the second electric wire facing wall portion. A third recess having a shape along the outer shape of the covered electric wire that is in close contact with the covered electric wire from one side in the mold clamping direction when the mold is clamped, and the second electric wire facing wall on the inner wall surface thereof A third electric wire holding wall portion that is in close contact with the outer wall surface of the portion and closes the second gap, and the second die is continuously provided on the outer side of the second electric wire holding wall portion. The third electric wire in a state where a third gap is held on the other side in the mold clamping direction with respect to the covered electric wire. Further comprising a third wire facing wall portion in close contact with the wall sections. According to such a configuration, the second gap is closed by the second electric wire facing wall portion, the third electric wire holding wall portion, and the second electric wire holding wall portion without crushing the covered electric wire, and the resin leaks from the cavity. Can be further prevented.

本発明によれば、被覆電線の破損の発生を抑制したモールド樹脂の成形金型を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the shaping | molding die of mold resin which suppressed generation | occurrence | production of the failure | damage of a covered electric wire can be provided.

本発明の実施形態に係る被覆電線の端末構造におけるモールド樹脂を想像線で示す被覆電線の端末部の斜視図である。It is a perspective view of the terminal part of a covered electric wire which shows the mold resin in the terminal structure of the covered electric wire concerning the embodiment of the present invention with an imaginary line. 図１の断面図である。It is sectional drawing of FIG. 実施形態に係るモールド樹脂１２０の製造工程を示す断面図である。It is sectional drawing which shows the manufacturing process of the mold resin 120 which concerns on embodiment. 図３のＡ−Ａ’断面図である。FIG. 4 is a cross-sectional view taken along line A-A ′ of FIG. 3. 図３のＢ−Ｂ’断面図である。FIG. 4 is a B-B ′ sectional view of FIG. 3. 図３のＣ−Ｃ’断面図である。FIG. 4 is a cross-sectional view taken along the line C-C ′ of FIG. 3. 比較例に係るモールド樹脂１２０の製造工程を示す断面図である。It is sectional drawing which shows the manufacturing process of the mold resin 120 which concerns on a comparative example. 図７のＤ−Ｄ’断面図である。It is D-D 'sectional drawing of FIG.

以下、図面を参照しながら本発明の実施形態に係る被覆電線の端末構造について説明する。 Hereinafter, the terminal structure of the covered wire according to the embodiment of the present invention will be described with reference to the drawings.

先ず、図１及び図２を参照して、本実施形態に係る被覆電線の端末部１００の構造を説明する。図１は、本実施形態に係る被覆電線の端末構造におけるモールド樹脂１２０を想像線で示す被覆電線の端末部１００の斜視図であり、図２は図１の断面図である。 First, with reference to FIG.1 and FIG.2, the structure of the terminal part 100 of the covered wire | conductor which concerns on this embodiment is demonstrated. FIG. 1 is a perspective view of a terminal portion 100 of a covered electric wire showing a molded resin 120 in the terminal structure of the covered electric wire according to the present embodiment by an imaginary line, and FIG. 2 is a cross-sectional view of FIG.

被覆電線の端末部１００は、被覆電線１に接続された端子１１０を有する。ここで、被覆電線１は、導体からなる芯線１ａ、並びに、この芯線１ａの周囲を覆う絶縁被覆１ｂによって構成されている。 The terminal portion 100 of the covered electric wire has a terminal 110 connected to the covered electric wire 1. Here, the covered electric wire 1 is constituted by a core wire 1a made of a conductor and an insulating coating 1b covering the periphery of the core wire 1a.

端子１１０は、被覆電線１を圧着接続する電線圧着部１１１、電線圧着部１１１の先端側に設けられてアース端子などの相手側端子に接触させて固定するための接触片部１１２によって構成される。 The terminal 110 includes an electric wire crimping portion 111 for crimping and connecting the covered electric wire 1, and a contact piece portion 112 provided on the distal end side of the electric wire crimping portion 111 for contacting and fixing to a mating terminal such as a ground terminal. .

電線圧着部１１１は、絶縁被覆圧着片１１１ａ、芯線圧着片１１１ｂ、及びそれらを接続する接続部１１１ｃを有する。絶縁被覆圧着片１１１ａは、被覆電線１の絶縁被覆１ｂの周囲に圧着して被覆電線１を固定する。芯線圧着片１１１ｂは、絶縁被覆１ｂから露出している芯線１ａの周囲に圧着して被覆電線１を固定する。 The electric wire crimping part 111 has an insulation coating crimping piece 111a, a core wire crimping piece 111b, and a connecting part 111c for connecting them. The insulation-coated crimping piece 111 a fixes the coated wire 1 by crimping around the insulation coating 1 b of the coated wire 1. The core wire crimping piece 111b is crimped around the core wire 1a exposed from the insulating coating 1b to fix the covered electric wire 1.

接触片部１１２の先端は、円形平板であり、その中心部に相手側端子と共にネジ止めするためのネジ挿通孔１１２ａが形成されている。 The tip of the contact piece 112 is a circular flat plate, and a screw insertion hole 112a for screwing together with the mating terminal is formed at the center thereof.

被覆電線の端末部１００は、更に、端子１１０に施されたモールド樹脂１２０により封止されている。このモールド樹脂１２０は、絶縁被覆１ｂの端部、並びに、この絶縁被覆１ｂの端部から露出している芯線１ａをシールする。したがって、モールド樹脂１２０は、被覆電線１の端部から絶縁被覆１ｂ内への侵水を防ぐ。 The terminal portion 100 of the covered electric wire is further sealed with a mold resin 120 applied to the terminal 110. The mold resin 120 seals the end portion of the insulating coating 1b and the core wire 1a exposed from the end portion of the insulating coating 1b. Therefore, the mold resin 120 prevents water from entering the insulating coating 1b from the end of the covered electric wire 1.

次に、図３〜図６を参照して、実施形態に係る端末部の製造工程を説明する。図３は実施形態に係るモールド樹脂１２０の成形金型の構造を含むモールド樹脂１２０の成形工程を示す断面図である。図４は図３のＡ−Ａ’断面図であり、図５は図３のＢ−Ｂ’断面図であり、図６は図３のＣ−Ｃ’断面図である。図３〜図６に示すように、モールド樹脂１２０を成形する際、接触片部１１２の先端を除き端末部１００は金型２００のキャビティ２３０内に収容される。 Next, with reference to FIGS. 3-6, the manufacturing process of the terminal part which concerns on embodiment is demonstrated. FIG. 3 is a cross-sectional view illustrating a molding process of the mold resin 120 including the structure of the molding mold of the mold resin 120 according to the embodiment. 4 is a cross-sectional view taken along line A-A ′ of FIG. 3, FIG. 5 is a cross-sectional view taken along line B-B ′ of FIG. 3, and FIG. 6 is a cross-sectional view taken along line C-C ′ of FIG. As shown in FIGS. 3 to 6, when molding the mold resin 120, the terminal portion 100 is accommodated in the cavity 230 of the mold 200 except for the tip of the contact piece portion 112.

次に、キャビティ２３０内に樹脂が流し込まれる。この樹脂は、吸湿性反応により硬化するものであり、例えば、株式会社ヘンケルジャパン製の「ＱＲ３４６０」又は「ＱＲ９５１５」等を用いることができる。 Next, resin is poured into the cavity 230. This resin is cured by a hygroscopic reaction. For example, “QR3460” or “QR9515” manufactured by Henkel Japan Co., Ltd. can be used.

続いて、下面から金型２００は加熱される。この加熱により、キャビティ２３０内の樹脂の吸湿性反応は促進し、樹脂は硬化する（モールド樹脂１２０となる）。 Subsequently, the mold 200 is heated from the lower surface. By this heating, the hygroscopic reaction of the resin in the cavity 230 is promoted, and the resin is cured (becomes the mold resin 120).

次に、図３〜図６を参照して金型２００の構造について詳しく説明する。金型２００は、下金型２１０と、この下金型２１０に対して型締めされて下金型２１０と共に被覆電線１の端末部を収容し、その端末部を覆うモールド樹脂を成形するキャビティ２３０を形成する上金型２２０にて構成される。 Next, the structure of the mold 200 will be described in detail with reference to FIGS. The mold 200 includes a lower mold 210 and a cavity 230 that is clamped to the lower mold 210 and accommodates the terminal portion of the covered electric wire 1 together with the lower mold 210 and molds a mold resin that covers the terminal portion. It is comprised with the upper mold | type 220 which forms.

下金型２１０は、キャビティ２３０の下側部分の殆どを形成する下金型本体部２１４と、この下金型本体部２１４の被覆電線１側を閉塞しキャビティ２３０の被覆電線１側の壁を構成する下側電線貫通壁部２１５とを備えている。下側電線貫通壁部２１５は、この実施形態では、被覆電線１の先端側から基端側へ被覆電線１に沿って第１電線保持壁部２１１、第２電線対向壁部２１２、及び第３電線保持壁部２１３から構成されている。 The lower mold 210 includes a lower mold main body 214 that forms most of the lower portion of the cavity 230, and the covered wire 1 side of the lower mold main body 214 is closed to cover the wall of the cavity 230 on the covered electric wire 1 side. The lower electric wire penetration wall part 215 which comprises is provided. In this embodiment, the lower-side electric wire penetrating wall portion 215 includes a first electric wire holding wall portion 211, a second electric wire facing wall portion 212, and a third electric wire along the covered electric wire 1 from the distal end side to the proximal end side of the covered electric wire 1. It is comprised from the electric wire holding wall part 213. FIG.

上金型２２０は、キャビティ２３０の上側部分の殆どを形成する上金型本体部２２４と、この上金型本体部２２４の被覆電線１側を閉塞しキャビティ２３０の被覆電線１側の壁を構成する上側電線貫通壁部２２５とを備えている。上側電線貫通壁部２２５は、下側貫通電線壁部２１５と共に、被覆電線１をキャビティ２３０の内部から外側に導出する貫通部を形成して電線貫通壁部を構成する。上側電線貫通壁部２２５は、この実施形態では、被覆電線１の先端側から基端側へ被覆電線１に沿って第１電線対向壁部２２１、第２電線保持壁部２２２、及び第３電線対向壁部２２３から構成されている。 The upper mold 220 constitutes an upper mold main body portion 224 that forms most of the upper portion of the cavity 230, and covers the covered electric wire 1 side of the upper mold main body portion 224 to form a wall of the cavity 230 on the covered electric wire 1 side. And an upper electric wire penetrating wall portion 225. The upper electric wire penetration wall portion 225 and the lower penetration electric wire wall portion 215 form a penetration portion that leads the covered electric wire 1 to the outside from the inside of the cavity 230 to constitute the electric wire penetration wall portion. In this embodiment, the upper electric wire penetrating wall portion 225 includes a first electric wire facing wall portion 221, a second electric wire holding wall portion 222, and a third electric wire along the covered electric wire 1 from the distal end side to the proximal end side of the covered electric wire 1. It is comprised from the opposing wall part 223.

図４に示すように、第１電線保持壁部２１１は、その上端に被覆電線１の外形に沿った円弧状の窪み２１１ａを有し、下金型２１０と上金型２２０を型締めした際に窪み２１１ａにて被覆電線１の下側の側面に密着する。第１電線対向壁部２２１は、下金型２１０と上金型２２０を型締めした際に被覆電線１と非接触の状態でその下端が第１電線保持壁部２１１の上端と密着する。また、第１電線対向壁部２２１はその下端に突部２２１ａを有し、突部２２１ａは被覆電線１と非接触の状態で窪み２１１ａに嵌合する。したがって、第１電線対向壁部２２１と被覆電線１との間には、隙間Ｓ１が生じる。これに対して、図５に示すように、第２電線保持壁部２２２は、その下端に被覆電線１の外形に沿った円弧状の窪み２２２ａを有し、下金型２１０と上金型２２０を型締めした際に窪み２２２ａにて被覆電線１の上側の側面に密着すると共に、そのキャビティ２３０側の壁面が第１電線対向壁部２２１及び第１電線保持部２１１と密着して隙間Ｓ１を塞ぐ。 As shown in FIG. 4, the first electric wire holding wall 211 has an arc-shaped depression 211 a along the outer shape of the covered electric wire 1 at its upper end, and when the lower mold 210 and the upper mold 220 are clamped The depression 211a is in close contact with the lower side surface of the covered electric wire 1. When the lower mold 210 and the upper mold 220 are clamped, the lower end of the first electric wire facing wall 221 is in close contact with the upper end of the first electric wire holding wall 211 in a non-contact state with the covered electric wire 1. Moreover, the 1st electric wire opposing wall part 221 has the protrusion 221a in the lower end, and the protrusion 221a is fitted to the hollow 211a in the state which is not in contact with the covered electric wire 1. Therefore, a gap S <b> 1 is generated between the first electric wire facing wall portion 221 and the covered electric wire 1. On the other hand, as shown in FIG. 5, the second electric wire holding wall portion 222 has an arc-shaped depression 222 a along the outer shape of the covered electric wire 1 at the lower end, and the lower mold 210 and the upper mold 220. When the mold is clamped, the recess 222a is in close contact with the upper side surface of the covered electric wire 1, and the wall surface on the cavity 230 side is in close contact with the first electric wire facing wall portion 221 and the first electric wire holding portion 211 to form the gap S1. Block it.

また、第２電線対向壁部２１２は、下金型２１０と上金型２２０を型締めした際に被覆電線１と非接触の状態でその上端が第２電線保持壁部２２２の下端と密着する。また、第２電線対向壁部２１２はその上端に突部２１２ａを有し、突部２１２ａは被覆電線１と非接触の状態で窪み２２２ａに嵌合する。したがって、第２電線対向壁部２１２と被覆電線１との間には、隙間Ｓ２が生じる。これに対して、図６に示すように、第３電線保持壁部２１３は、その上端に被覆電線１の外形に沿った円弧状の窪み２１３ａを有し、下金型２１０と上金型２２０を型締めした際に窪み２１３ａにて被覆電線１の下側の側面に密着すると共に、そのキャビティ２３０側の壁面が第２電線対向壁部２１２及び第２電線保持部２２２と密着して隙間Ｓ２を塞ぐ。 The upper end of the second electric wire facing wall portion 212 is in close contact with the lower end of the second electric wire holding wall portion 222 in a non-contact state with the covered electric wire 1 when the lower mold 210 and the upper mold 220 are clamped. . Moreover, the 2nd electric wire opposing wall part 212 has the protrusion 212a in the upper end, and the protrusion 212a fits into the hollow 222a in the state which is not in contact with the covered electric wire 1. FIG. Therefore, a gap S <b> 2 is generated between the second electric wire facing wall portion 212 and the covered electric wire 1. On the other hand, as shown in FIG. 6, the third electric wire holding wall 213 has an arc-shaped depression 213 a along the outer shape of the covered electric wire 1 at its upper end, and the lower mold 210 and the upper mold 220. When the mold is clamped, the recess 213a is in close contact with the lower side surface of the covered electric wire 1, and the wall surface on the cavity 230 side is in intimate contact with the second electric wire facing wall portion 212 and the second electric wire holding portion 222, and the gap S2 Block.

また、本実施形態において、第３電線対向壁部２２３は、下金型２１０と上金型２２０を型締めした際に被覆電線１と非接触の状態でその下端が第３電線保持壁部２１３の上端と密着する。また、第３電線対向壁部２２３はその下端に突部２２３ａを有し、突部２２３ａは被覆電線１と非接触の状態で窪み２１３ａに嵌合する。第３電線対向壁部２２３と被覆電線１との間には、隙間Ｓ３が生じる。 Further, in the present embodiment, the third electric wire facing wall portion 223 is in contact with the covered electric wire 1 when the lower die 210 and the upper die 220 are clamped, and the lower end thereof is the third electric wire holding wall portion 213. Adheres to the top of the. The third electric wire facing wall portion 223 has a protrusion 223a at the lower end thereof, and the protrusion 223a fits into the recess 213a in a non-contact state with the covered electric wire 1. A gap S3 is generated between the third electric wire facing wall 223 and the covered electric wire 1.

次に、図７及び図８に示す比較例と比較して、本実施形態の効果を説明する。図７は比較例に係るモールド樹脂１２０の成形金型を含むモールド樹脂１２０の製造工程を示す断面図であり、図８は図７のＤ−Ｄ’断面図である。 Next, the effect of this embodiment will be described in comparison with the comparative example shown in FIGS. 7 is a cross-sectional view showing a manufacturing process of a mold resin 120 including a molding die of the mold resin 120 according to a comparative example, and FIG. 8 is a cross-sectional view taken along the line D-D ′ of FIG.

図７及び図８に示すように、比較例において下金型２１０’は、キャビティ２３０’の下側部分の殆どを形成する下金型本体部２１４’と、この下金型本体部２１４’の被覆電線１側を閉塞しキャビティ２３０’の被覆電線１側の壁を構成する下側壁部２１１’を有する。また、比較例において上金型２２０’は、キャビティ２３０’の上側部分の殆どを形成する上金型本体部２２４’と、この上金型本体部２２４’の被覆電線１側を閉塞しキャビティ２３０’の被覆電線１側の壁を構成する上側壁部２２１’を有する。図８に示すように、下側壁部２１１’はその上端に被覆電線１の外形に沿った円弧状の窪み２１１ａ’を有し、下金型２１０’と上金型２２０’を型締めした際に窪み２１１ａ’にて被覆電線１の側面に接する。上側壁部２２１’は下金型２１０’と上金型２２０’を型締めした際にその下端にて下側壁部２１１’に接し、被覆電線１を押し潰す。以上の構成により、比較例はキャビティ２３０’からの樹脂の漏れを防止する。しかしながら、被覆電線１は押し潰されるため、被覆電線１に破損が生じ易い。 As shown in FIGS. 7 and 8, in the comparative example, the lower mold 210 ′ includes a lower mold body 214 ′ that forms most of the lower part of the cavity 230 ′, and the lower mold body 214 ′. It has a lower wall portion 211 ′ that closes the covered electric wire 1 side and constitutes a wall of the cavity 230 ′ on the covered electric wire 1 side. In the comparative example, the upper mold 220 ′ closes the upper mold main body 224 ′ that forms most of the upper part of the cavity 230 ′ and the covered electric wire 1 side of the upper mold main body 224 ′ to close the cavity 230. It has an upper side wall portion 221 ′ that constitutes a wall of the covered electric wire 1 side. As shown in FIG. 8, the lower wall portion 211 ′ has an arc-shaped depression 211 a ′ along the outer shape of the covered electric wire 1 at the upper end, and when the lower mold 210 ′ and the upper mold 220 ′ are clamped In contact with the side surface of the covered electric wire 1 at the recess 211a ′. When the lower mold 210 'and the upper mold 220' are clamped, the upper side wall part 221 'contacts the lower wall part 211' at the lower end thereof and crushes the covered electric wire 1. With the above configuration, the comparative example prevents resin leakage from the cavity 230 '. However, since the covered electric wire 1 is crushed, the covered electric wire 1 is easily damaged.

これに対して、上記のように本実施形態においては、第１電線保持壁部２１１、第１電線対向壁部２２１、及び第２電線保持壁部２２２により被覆電線１を押し潰すことなく隙間Ｓ１を塞ぎ、キャビティ２３０からの樹脂の漏れを防止することができる。したがって、本実施形態では、被覆電線１は押し潰されないため、その破損の発生を抑制できる。 On the other hand, as described above, in the present embodiment, the gap S1 is not crushed by the first electric wire holding wall portion 211, the first electric wire facing wall portion 221, and the second electric wire holding wall portion 222 without crushing the covered electric wire 1. And leakage of resin from the cavity 230 can be prevented. Therefore, in this embodiment, since the covered electric wire 1 is not crushed, generation | occurrence | production of the damage can be suppressed.

また、上記のように本実施形態においては、第２電線対向壁部２１２、第３電線保持壁部２１３、及び第２電線保持壁部２２２により被覆電線１を押し潰すことなく隙間Ｓ２を塞ぎ、キャビティ２３０からの樹脂の漏れを更に防止する。 Further, as described above, in the present embodiment, the gap S2 is closed without crushing the covered electric wire 1 by the second electric wire facing wall portion 212, the third electric wire holding wall portion 213, and the second electric wire holding wall portion 222, The resin leakage from the cavity 230 is further prevented.

以上、発明の実施の形態を説明したが、本発明はこれらに限定されるものではなく、発明の趣旨を逸脱しない範囲内において、種々の変更、追加等が可能である。例えば、上記実施形態では、下側と上側に３枚の壁部を用いたが、本願発明は、第１電線保持壁部２１１、第１電線対向壁部２２１、及び第２電線保持壁部２２２を備えていれば、本願発明の効果を奏することができる。しかし、上記のように３枚の壁部を用いることにより、被覆電線１をバランス良く保持することができるという利点がある。また、これらの壁部は、別々の部材ではなく、上型本体部及び下型本体部と共に一体構造であっても良い。 Although the embodiments of the invention have been described above, the present invention is not limited to these embodiments, and various modifications and additions can be made without departing from the spirit of the invention. For example, in the above-described embodiment, three wall portions are used on the lower side and the upper side. However, in the present invention, the first electric wire holding wall portion 211, the first electric wire facing wall portion 221, and the second electric wire holding wall portion 222 are used. If it has, the effect of this invention can be show | played. However, there is an advantage that the covered electric wire 1 can be held in a well-balanced manner by using the three wall portions as described above. In addition, these wall portions may not be separate members but may be integrated with the upper die main body portion and the lower die main body portion.

１…被覆電線、１ａ…芯線、１ｂ…絶縁被覆、１００…被覆電線の端末部、１１０…端子、１１１…電線圧着部、１１１ａ…絶縁被覆圧着片、１１１ｂ…芯線圧着片、１１１ｃ…接続部、１１２…接触片部、１１２ａ…ネジ挿通孔、１２０…モールド樹脂、２００…金型、２１０…下金型、２１１…第１電線保持壁部、２１２…第２電線対向壁部、２１３…第３電線保持壁部、２１４…下金型本体部、２１５…下側電線貫通壁部、２２０…上金型、２２１…第１電線対向壁部、２２２…第２電線保持壁部、２２３…第３電線対向壁部、２２４…上金型本体部、２２５…上側電線貫通壁部、２３０…キャビティ。 DESCRIPTION OF SYMBOLS 1 ... Coated electric wire, 1a ... Core wire, 1b ... Insulation coating, 100 ... Terminal part of a covered electric wire, 110 ... Terminal, 111 ... Electric wire crimping part, 111a ... Insulation coating crimping piece, 111b ... Core wire crimping piece, 111c ... Connection part, DESCRIPTION OF SYMBOLS 112 ... Contact piece part, 112a ... Screw insertion hole, 120 ... Mold resin, 200 ... Mold, 210 ... Lower mold, 211 ... 1st electric wire holding wall part, 212 ... 2nd electric wire opposing wall part, 213 ... 3rd Electric wire holding wall, 214 ... Lower mold body, 215 ... Lower electric wire through wall, 220 ... Upper die, 221 ... First electric wire facing wall, 222 ... Second electric wire holding wall, 223 ... Third Wire-facing wall portion, 224... Upper mold body portion, 225... Upper wire through-wall portion, 230.

Claims

被覆電線の端末部を被覆するモールド樹脂の成形金型であって、
第１の型と、
前記第１の型に対して型締めされて前記第１の型と共に前記被覆電線の端末部を収容し、前記端末部を覆う前記モールド樹脂を成形するキャビティを形成する第２の型とを備え、
前記第１の型及び前記第２の型は、前記被覆電線を前記キャビティの内部から外側に導出する貫通部を形成した電線貫通壁部を有し、
前記電線貫通壁部は、
前記第１の型に設けられ型締め時に型締め方向の一方の側から前記被覆電線に密着する前記被覆電線の外形に沿った形状の第１の窪みを有する第１電線保持壁部と、
前記第２の型に設けられ型締め時に前記被覆電線に対して型締め方向の他方の側に第１の隙間を保持した状態で前記第１電線保持壁部と密着する第１電線対向壁部と、
前記第２の型に前記第１電線保対向部の外側に連続して設けられ型締め時に型締め方向の他方の側から前記被覆電線に密着する前記被覆電線の外形に沿った形状の第２の窪みを有すると共に、その内側の壁面で前記第１電線対向壁部の外側の壁面と密着して前記第１の隙間を閉塞する第２電線保持壁部と
を備えたことを特徴とするモールド樹脂の成形金型。 A molding resin mold that covers the terminal portion of the covered electric wire,
A first mold;
A second mold that is clamped to the first mold and accommodates the terminal portion of the covered electric wire together with the first mold and forms a cavity for molding the molding resin that covers the terminal portion. ,
The first mold and the second mold have a wire penetration wall portion in which a penetration portion for leading the covered wire from the inside of the cavity to the outside is formed,
The wire penetration wall part is
A first electric wire holding wall portion having a first recess formed along the outer shape of the covered electric wire, which is provided in the first die and closely contacts the covered electric wire from one side in a clamping direction at the time of clamping;
A first electric wire facing wall portion that is provided in the second die and is in close contact with the first electric wire holding wall portion in a state in which the first gap is held on the other side in the mold clamping direction with respect to the covered electric wire at the time of clamping. When,
A second of the shape that follows the outer shape of the covered wire that is provided on the second die continuously outside the first wire holding facing portion and is in close contact with the covered wire from the other side in the mold clamping direction during mold clamping. And a second electric wire holding wall portion that is in close contact with the outer wall surface of the first electric wire facing wall portion on the inner wall surface thereof and closes the first gap. Resin mold.

前記電線貫通壁部は、
前記第１の型に前記第１電線保持壁部の外側に連続して設けられ型締め時に前記被覆電線に対して型締め方向の一方の側に第２の隙間を保持した状態で前記第２電線保持壁部と密着する第２電線対向壁部と、
前記第１の型に前記第２電線対向壁部の外側に連続して設けられ型締め時に型締め方向の一方の側から前記被覆電線に密着する前記被覆電線の外形に沿った形状の第３の窪みを有すると共に、その内側の壁面で前記第２電線対向壁部の外側の壁面と密着して前記第２の隙間を閉塞する第３電線保持壁部と、
前記第２の型に前記第２電線保持壁部の外側に連続して設けられ型締め時に前記被覆電線に対して型締め方向の他方の側に第３の隙間を保持した状態で前記第３電線保持壁部と密着する第３電線対向壁部と
を更に備えたことを特徴とする請求項１記載のモールド樹脂の成形金型。
The wire penetration wall part is
The second mold is provided continuously to the outside of the first electric wire holding wall portion in the first die, and the second gap is held on one side in the mold clamping direction with respect to the covered electric wire during mold clamping. A second electric wire facing wall portion in close contact with the electric wire holding wall portion;
A third shape that is provided on the first die continuously to the outside of the second electric wire facing wall portion and conforms to the outer shape of the covered electric wire that closely contacts the covered electric wire from one side in the mold clamping direction during mold clamping. A third electric wire holding wall portion that closely contacts the outer wall surface of the second electric wire facing wall portion at its inner wall surface and closes the second gap.
The third mold is provided continuously to the outside of the second electric wire holding wall portion in the second die, and the third gap is held in a state where the third gap is held on the other side in the mold clamping direction with respect to the covered electric wire at the time of clamping. The molding resin mold according to claim 1, further comprising: a third electric wire facing wall portion that is in close contact with the electric wire holding wall portion.