JP6819914B2 - Insert molded product - Google Patents

Insert molded product Download PDF

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JP6819914B2
JP6819914B2 JP2019537599A JP2019537599A JP6819914B2 JP 6819914 B2 JP6819914 B2 JP 6819914B2 JP 2019537599 A JP2019537599 A JP 2019537599A JP 2019537599 A JP2019537599 A JP 2019537599A JP 6819914 B2 JP6819914 B2 JP 6819914B2
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Prior art keywords
nut
bus bar
positioning pin
mold
insert
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JPWO2019039395A1 (en
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佑次 伊藤
佑次 伊藤
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles

Description

本明細書によって開示される技術は、インサート成形品に関する。 The techniques disclosed herein relate to insert molded articles.

従来、インサートナットを位置決めピンに嵌合させた状態でインサート成形を行うものとして、実開平２−８２５０６号公報（下記特許文献１）に記載の位置決め構造が知られている。下型に彫り込んだ凹部に位置決めピンが設置されており、この位置決めピンにインサートナットが嵌合可能とされている。インサートナットの内部には雌ねじが設けられている。 Conventionally, the positioning structure described in Japanese Patent Application Laid-Open No. 2-82506 (Patent Document 1 below) is known as a device for performing insert molding with an insert nut fitted to a positioning pin. A positioning pin is installed in the recess carved into the lower mold, and the insert nut can be fitted into this positioning pin. A female screw is provided inside the insert nut.

実開平２−８２５０６号公報Jikkenhei No. 2-82506

しかしながら、上記の構造では、インサートナットを位置決めピンに嵌合させた際に、雌ねじが位置決めピンに干渉し、雌ねじが損傷するおそれがある。 However, in the above structure, when the insert nut is fitted to the positioning pin, the female screw may interfere with the positioning pin and the female screw may be damaged.

本明細書によって開示されるインサート成形品は、下型から上型に向けて位置決めピンが突出して設けられた金型によって成形されるインサート成形品であって、前記位置決めピンが挿入される座ぐり部が下方に開口して設けられた金属製の締結部材と、前記締結部材の外面に一体に成形された樹脂製のハウジングとを備え、前記締結部材は前記座ぐり部の上端から上方に連なって設けられた雌ねじ部を備えており、前記位置決めピンの上下寸法は前記座ぐり部の上下寸法以下である構成とした。 The insert-molded product disclosed in the present specification is an insert-molded product formed by a mold in which a positioning pin protrudes from a lower mold to an upper mold, and a counterbore into which the positioning pin is inserted. A metal fastening member having a portion opened downward and a resin housing integrally molded on the outer surface of the fastening member are provided, and the fastening member is connected upward from the upper end of the counterbore portion. The vertical dimension of the positioning pin is equal to or smaller than the vertical dimension of the counterbore portion.

このような構成によると、締結部材を下型にセットした際に、位置決めピンが座ぐり部に下方から進入した状態となるものの、位置決めピンが雌ねじ部に進入しないため、雌ねじ部を構成する内周壁が位置決めピンと干渉することを回避できる。したがって、位置決めピンによって締結部材の位置決めを行いつつ、雌ねじ部を構成する内周壁が位置決めピンによって損傷することを防止できる。 According to such a configuration, when the fastening member is set in the lower mold, the positioning pin enters the counterbore portion from below, but the positioning pin does not enter the female thread portion, so that the internal thread portion is formed. It is possible to prevent the peripheral wall from interfering with the positioning pin. Therefore, it is possible to prevent the inner peripheral wall constituting the female thread portion from being damaged by the positioning pin while positioning the fastening member by the positioning pin.

本明細書によって開示されるインサート成形品は、以下の構成としてもよい。
前記締結部材は、前記雌ねじ部が設けられたナットと、前記ナットの下端部が載置されたバスバーとを備えて構成され、前記座ぐり部は、前記ナットの下側開口部と、前記バスバーに上下方向に貫通して設けられた貫通孔部とからなる構成としてもよい。
このような構成によると、ナットとバスバーによって座ぐり部が設けられているから、位置決めピンによってナットとバスバーを同時に位置決めすることができる。The insert molded article disclosed by the present specification may have the following constitution.
The fastening member includes a nut provided with the female thread portion and a bus bar on which the lower end portion of the nut is placed, and the counterbore portion includes a lower opening of the nut and the bus bar. It may be configured to include a through hole portion provided so as to penetrate in the vertical direction.
According to such a configuration, since the counterbore portion is provided by the nut and the bus bar, the nut and the bus bar can be positioned at the same time by the positioning pin.

前記ナットは、前記バスバーと反対側の上端部が閉じた袋状のナットとされ、前記ナットの上端部は、前記ハウジングから外部に露出している構成としてもよい。
このような構成によると、下型にバスバーとナットをセットして、ナットの上端部に上方から上型を当てることで、ナットとバスバーを上型と下型の間に挟持することができる。したがって、ナットの下端部とバスバーの上面との間に樹脂が浸入することを確実に防ぐことができる。The nut may be a bag-shaped nut having an upper end portion opposite to the bus bar closed, and the upper end portion of the nut may be exposed to the outside from the housing.
According to such a configuration, the nut and the bus bar can be sandwiched between the upper mold and the lower mold by setting the bus bar and the nut on the lower mold and applying the upper mold to the upper end portion of the nut from above. Therefore, it is possible to reliably prevent the resin from entering between the lower end of the nut and the upper surface of the bus bar.

本明細書によって開示されるインサート成形品によれば、位置決めピンによって締結部材の位置決めを行いつつ、雌ねじ部を構成する内周壁が位置決めピンによって損傷することを防止できる。 According to the insert molded product disclosed by the present specification, it is possible to prevent the inner peripheral wall constituting the female thread portion from being damaged by the positioning pin while positioning the fastening member by the positioning pin.

インサート成形品の底面図Bottom view of insert molded product 図１におけるＡ−Ａ線断面図Cross-sectional view taken along the line AA in FIG. 下型を示す断面図Sectional view showing the lower mold 下型にバスバーをセットした状態を示す断面図Cross-sectional view showing the state where the bus bar is set in the lower mold 下型にナットをセットした状態を示す断面図Cross-sectional view showing the state where the nut is set in the lower mold ナットとバスバーを上型と下型の間に挟持した後、成形用キャビティに樹脂を注入した状態を示す断面図Cross-sectional view showing a state in which a nut and a bus bar are sandwiched between an upper mold and a lower mold, and then resin is injected into a molding cavity.

＜実施形態＞
実施形態を図１から図６の図面を参照しながら説明する。本実施形態のインサート成形品１０は、図１に示すように、複数のバスバー２０と、これらのバスバー２０と一体に成形された樹脂製のハウジング４０とを備えて構成されている。図６に示すように、インサート成形品１０は金型５０によってインサート成形することで形成されている。金型５０は上型５１と下型５２からなり、型閉じ状態における上型５１と下型５２の間に形成される成形用キャビティ５３に溶融樹脂を注入することでハウジング４０が形成されている。また、下型５２の底面には位置決めピン５４が上型５１に向けて上方に突出して設けられている。位置決めピン５４は円柱状をなしている。<Embodiment>
The embodiment will be described with reference to the drawings of FIGS. 1 to 6. As shown in FIG. 1, the insert molded product 10 of the present embodiment includes a plurality of bus bars 20 and a resin housing 40 integrally molded with these bus bars 20. As shown in FIG. 6, the insert molded product 10 is formed by insert molding with a mold 50. The mold 50 is composed of an upper mold 51 and a lower mold 52, and a housing 40 is formed by injecting molten resin into a molding cavity 53 formed between the upper mold 51 and the lower mold 52 in a closed state. .. Further, a positioning pin 54 is provided on the bottom surface of the lower mold 52 so as to project upward toward the upper mold 51. The positioning pin 54 has a columnar shape.

バスバー２０は導電性の金属材からなり、全体として板状をなし、下型５２の底面に沿ってセットされる水平部２１を備えている。水平部２１の略中央部には、下型５２の位置決めピン５４が下方から挿通される貫通孔部２３が板厚方向（上下方向）に貫通して設けられている。貫通孔部２３の内径は、位置決めピン５４の直径とほぼ同じかこれよりやや大きめとされている。また、下型５２の底面には、バスバー２０の水平部２１の外形に合わせて下方に凹んだ位置決め凹部５５が設けられている。バスバー２０の水平部２１は、位置決めピン５４を貫通孔部２３に挿通させつつ、位置決め凹部５５に嵌まり込むことによって位置決めされる。 The bus bar 20 is made of a conductive metal material, has a plate shape as a whole, and has a horizontal portion 21 set along the bottom surface of the lower mold 52. A through hole portion 23 through which the positioning pin 54 of the lower die 52 is inserted from below is provided in the substantially central portion of the horizontal portion 21 so as to penetrate in the plate thickness direction (vertical direction). The inner diameter of the through hole portion 23 is substantially the same as or slightly larger than the diameter of the positioning pin 54. Further, on the bottom surface of the lower mold 52, a positioning recess 55 recessed downward according to the outer shape of the horizontal portion 21 of the bus bar 20 is provided. The horizontal portion 21 of the bus bar 20 is positioned by being fitted into the positioning recess 55 while the positioning pin 54 is inserted into the through hole portion 23.

ナット３０は導電性の金属材からなり、全体として袋状をなし、円筒状をなして下方に開口する円筒部３１と、円筒部３１における下側開口部３３とは反対側に位置して円筒部３１の上端開口部を閉じた上端部３２とを備えている。円筒部３１の内部空間のうち下側開口部３３よりも上方には雌ねじ部３４が形成されている。下側開口部３３の直径は、位置決めピン５４の直径とほぼ同じかこれよりやや大きめとされている。また、雌ねじ部３４の内径は、位置決めピン５４の直径よりも小さめとされている。 The nut 30 is made of a conductive metal material and has a bag shape as a whole. The nut 30 has a cylindrical shape and is located on the opposite side of the cylindrical portion 31 that opens downward and the lower opening 33 of the cylindrical portion 31. It is provided with an upper end portion 32 in which the upper end opening of the portion 31 is closed. A female screw portion 34 is formed above the lower opening 33 in the internal space of the cylindrical portion 31. The diameter of the lower opening 33 is substantially the same as or slightly larger than the diameter of the positioning pin 54. Further, the inner diameter of the female screw portion 34 is smaller than the diameter of the positioning pin 54.

下側開口部３３と雌ねじ部３４はいずれも円孔形状をなして上下方向に延びる空間であって、雌ねじ部３４は、下側開口部３３の上方に連なって設けられている。雌ねじ部３４の上下寸法は下側開口部３３の上下寸法よりも大きいものとされている。雌ねじ部３４は下側開口部３３と同軸に配置され、雌ねじ部３４の内径は下側開口部３３の内径よりも小さいものとされている。雌ねじ部３４を構成する内周壁には雌ねじが形成されている一方、下側開口部３３を構成する内周壁には雌ねじが形成されていない。なお、下側開口部３３を構成する内周壁と雌ねじ部３４を構成する内周壁とはすり鉢状のテーパ部３５によって連結されており、位置決めピン５４の上端はテーパ部３５の下端に位置している。 The lower opening 33 and the female thread 34 are both circular holes and extend in the vertical direction, and the female thread 34 is provided above the lower opening 33. The vertical dimension of the female screw portion 34 is larger than the vertical dimension of the lower opening 33. The female screw portion 34 is arranged coaxially with the lower opening 33, and the inner diameter of the female screw portion 34 is smaller than the inner diameter of the lower opening 33. Female threads are formed on the inner peripheral wall forming the female thread portion 34, while female threads are not formed on the inner peripheral wall forming the lower opening 33. The inner peripheral wall forming the lower opening 33 and the inner peripheral wall forming the female threaded portion 34 are connected by a mortar-shaped tapered portion 35, and the upper end of the positioning pin 54 is located at the lower end of the tapered portion 35. There is.

下型５２にバスバー２０とナット３０をセットするには、図５に示すように、まず、バスバー２０を下型５２の底面に載置し、位置決めピン５４と位置決め凹部５５によってバスバー２０の水平部２１を所定の位置に位置決めする。詳細に説明すると、位置決めピン５４が貫通孔部２３に嵌合するとともに、水平部２１が位置決め凹部５５に嵌合することでバスバー２０の水平方向の位置決めが行われる。次に、ナット３０の下端部をバスバー２０の上面に載置する。この状態では、位置決めピン５４が下側開口部３３に嵌合することでナット３０の水平方向の位置決めが行われる。 To set the bus bar 20 and nut 30 on the lower mold 52, first, as shown in FIG. 5, the bus bar 20 is placed on the bottom surface of the lower mold 52, and the horizontal portion of the bus bar 20 is provided by the positioning pin 54 and the positioning recess 55. 21 is positioned at a predetermined position. More specifically, the positioning pin 54 fits into the through hole portion 23, and the horizontal portion 21 fits into the positioning recess 55 to position the bus bar 20 in the horizontal direction. Next, the lower end of the nut 30 is placed on the upper surface of the bus bar 20. In this state, the positioning pin 54 is fitted into the lower opening 33 to position the nut 30 in the horizontal direction.

位置決めピン５４は、バスバー２０の貫通孔部２３とナット３０の下側開口部３３とからなる座ぐり部に挿通されているものの、雌ねじ部３４の下方に位置している。すなわち、位置決めピン５４の上下寸法は、座ぐり部（貫通孔部２３と下側開口部３３からなる空間）の上下寸法以下となっているため、雌ねじ部３４のねじ山が位置決めピン５４によって損傷することはない。このとき、貫通孔部２３と下側開口部３３は同軸に配置され、貫通孔部２３を構成する内周壁と下側開口部３３を構成する内周壁とは面一をなして上下方向に連なって配置される。 Although the positioning pin 54 is inserted into the counterbore portion including the through hole portion 23 of the bus bar 20 and the lower opening 33 of the nut 30, it is located below the female screw portion 34. That is, since the vertical dimension of the positioning pin 54 is equal to or smaller than the vertical dimension of the counterbore portion (the space formed by the through hole portion 23 and the lower opening portion 33), the thread of the female screw portion 34 is damaged by the positioning pin 54. There is nothing to do. At this time, the through hole portion 23 and the lower opening 33 are coaxially arranged, and the inner peripheral wall constituting the through hole 23 and the inner peripheral wall forming the lower opening 33 are flush with each other and are connected in the vertical direction. Is placed.

次に、上型５１と下型５２を型閉じすると、上型５１の天井面がナット３０の上端部３２に上方から当接し、バスバー２０とナット３０が上型５１と下型５２によって上下方向から挟持された状態となる。これにより、上型５１の天井面と下型５２の底面との間には成形用キャビティ５３が形成される。そして、図６に示すように、成形用キャビティ５３に溶融樹脂を注入し、この溶融樹脂が冷え固まることでハウジング４０が形成される。この後、上型５１と下型５２を型開きしてインサート成形品１０を取り出す。 Next, when the upper mold 51 and the lower mold 52 are closed, the ceiling surface of the upper mold 51 abuts on the upper end portion 32 of the nut 30 from above, and the bus bar 20 and the nut 30 are vertically oriented by the upper mold 51 and the lower mold 52. It will be in a state of being pinched from. As a result, a molding cavity 53 is formed between the ceiling surface of the upper mold 51 and the bottom surface of the lower mold 52. Then, as shown in FIG. 6, the molten resin is injected into the molding cavity 53, and the molten resin is cooled and solidified to form the housing 40. After that, the upper mold 51 and the lower mold 52 are opened and the insert molded product 10 is taken out.

ところで、ハウジング４０は、バスバー２０とナット３０の外面に一体に成形されており、バスバー２０とナット３０の境界部分を覆うようにして配されている。このため、インサート成形する際にバスバー２０とナット３０の境界部分から溶融樹脂が浸入することが懸念される。しかしながら、上型５１と下型５２によってバスバー２０の上面とナット３０の下端部とが強固に当接しているため、バスバー２０とナット３０の境界部分に溶融樹脂が入り込むことはなく、確実に食い切りを行うことができる。 By the way, the housing 40 is integrally molded on the outer surfaces of the bus bar 20 and the nut 30, and is arranged so as to cover the boundary portion between the bus bar 20 and the nut 30. Therefore, there is a concern that the molten resin may infiltrate from the boundary portion between the bus bar 20 and the nut 30 during insert molding. However, since the upper surface of the bus bar 20 and the lower end of the nut 30 are firmly in contact with each other by the upper die 51 and the lower die 52, the molten resin does not enter the boundary portion between the bus bar 20 and the nut 30 and is surely cut off. It can be performed.

以上のように本実施形態では、締結部材（バスバー２０、ナット３０）を下型５２にセットした際に、位置決めピン５４が座ぐり部（貫通孔部２３、下側開口部３３）に下方から進入した状態となるものの、位置決めピン５４が雌ねじ部３４に進入しないため、雌ねじ部３４を構成する内周壁が位置決めピン５４と干渉することを回避できる。したがって、位置決めピン５４によって締結部材の位置決めを行いつつ、雌ねじ部３４を構成する内周壁が位置決めピン５４によって損傷することを防止できる。 As described above, in the present embodiment, when the fastening member (bus bar 20, nut 30) is set in the lower mold 52, the positioning pin 54 is placed in the counterbore portion (through hole portion 23, lower opening portion 33) from below. Since the positioning pin 54 does not enter the female screw portion 34 although it is in the entered state, it is possible to prevent the inner peripheral wall constituting the female screw portion 34 from interfering with the positioning pin 54. Therefore, while positioning the fastening member by the positioning pin 54, it is possible to prevent the inner peripheral wall constituting the female thread portion 34 from being damaged by the positioning pin 54.

締結部材は、雌ねじ部３４が設けられたナット３０と、ナット３０の下端部が載置されたバスバー２０とを備えて構成され、座ぐり部は、ナット３０の下側開口部３３と、バスバー２０に上下方向に貫通して設けられた貫通孔部２３とからなる構成としてもよい。
このような構成によると、ナット３０とバスバー２０によって座ぐり部が設けられているから、位置決めピン５４によってナット３０とバスバー２０を同時に位置決めすることができる。The fastening member includes a nut 30 provided with a female screw portion 34 and a bus bar 20 on which the lower end portion of the nut 30 is placed, and the counterbore portion includes a lower opening 33 of the nut 30 and a bus bar. It may be configured to include a through hole portion 23 provided through the 20 in the vertical direction.
According to such a configuration, since the counterbore portion is provided by the nut 30 and the bus bar 20, the nut 30 and the bus bar 20 can be positioned at the same time by the positioning pin 54.

ナット３０は、バスバー２０と反対側の上端部３２が閉じた袋状のナットとされ、ナット３０の上端部３２は、ハウジング４０から外部に露出している構成としてもよい。
このような構成によると、下型５２にバスバー２０とナット３０をセットして、ナット３０の上端部３２に上方から上型５１を当てることで、ナット３０とバスバー２０を上型５１と下型５２の間に挟持することができる。したがって、ナット３０の下端部とバスバー２０の上面との間に樹脂が浸入することを確実に防ぐことができる。The nut 30 may be a bag-shaped nut in which the upper end 32 on the opposite side of the bus bar 20 is closed, and the upper end 32 of the nut 30 may be exposed to the outside from the housing 40.
According to such a configuration, the bus bar 20 and the nut 30 are set on the lower mold 52, and the upper mold 51 is applied to the upper end portion 32 of the nut 30 from above to make the nut 30 and the bus bar 20 into the upper mold 51 and the lower mold. It can be sandwiched between 52. Therefore, it is possible to reliably prevent the resin from entering between the lower end portion of the nut 30 and the upper surface of the bus bar 20.

＜他の実施形態＞
本明細書によって開示される技術は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような種々の態様も含まれる。
（１）上記実施形態ではバスバー２０とナット３０によって締結部材が構成されているものの、ナット３０のみを備える締結部材としてもよい。また、ナット３０は袋状のナットである必要はなく、貫通した形状のナットであってもよい。<Other embodiments>
The techniques disclosed herein are not limited to the embodiments described above and in the drawings, and include, for example, various aspects such as:
(1) Although the fastening member is composed of the bus bar 20 and the nut 30 in the above embodiment, the fastening member may include only the nut 30. Further, the nut 30 does not have to be a bag-shaped nut, and may be a nut having a penetrating shape.

（２）上記実施形態では位置決めピン５４と位置決め凹部５５の双方でバスバー２０の位置決めを行っているものの、位置決め凹部５５のみでバスバー２０の位置決めを行ってもよい。この場合、バスバー２０の貫通孔部の直径をナット３０の下側開口部３３の直径よりも大きめに設定してもよい。 (2) In the above embodiment, the bus bar 20 is positioned by both the positioning pin 54 and the positioning recess 55, but the bus bar 20 may be positioned only by the positioning recess 55. In this case, the diameter of the through hole of the bus bar 20 may be set to be larger than the diameter of the lower opening 33 of the nut 30.

（３）上記実施形態ではナット３０の上端部３２がハウジング４０から外部に露出しているものの、ナットの上端部がハウジング４０の内部に埋設されている形態としてもよい。 (3) In the above embodiment, the upper end 32 of the nut 30 is exposed to the outside from the housing 40, but the upper end of the nut may be embedded inside the housing 40.

１０…インサート成形品
２０…バスバー
２３…貫通孔部
３０…ナット
３３…下側開口部
３４…雌ねじ部
４０…ハウジング
５０…金型
５１…上型
５２…下型
５４…位置決めピン10 ... Insert molded product 20 ... Bus bar 23 ... Through hole 30 ... Nut 33 ... Lower opening 34 ... Female thread 40 ... Housing 50 ... Mold 51 ... Upper mold 52 ... Lower mold 54 ... Positioning pin

Claims (3)

下型から上型に向けて位置決めピンが突出して設けられた金型によって成形されるインサート成形品であって、
前記位置決めピンが挿入される座ぐり部が下方に開口して設けられた金属製の締結部材と、
前記締結部材の外面に一体に成形された樹脂製のハウジングとを備え、
前記締結部材は前記座ぐり部の上端から上方に連なって設けられた雌ねじ部を備えており、前記位置決めピンの上下寸法は前記座ぐり部の上下寸法以下であるインサート成形品。It is an insert molded product that is molded by a mold provided with a positioning pin protruding from the lower mold to the upper mold.
A metal fastening member provided with a counterbore portion into which the positioning pin is inserted and opened downward.
A resin housing integrally molded on the outer surface of the fastening member is provided.
An insert-molded article in which the fastening member includes a female screw portion provided so as to be continuous from the upper end of the counterbore portion, and the vertical dimension of the positioning pin is equal to or less than the vertical dimension of the counterbore portion. 前記締結部材は、前記雌ねじ部が設けられたナットと、前記ナットの下端部が載置されたバスバーとを備えて構成され、
前記座ぐり部は、前記ナットの下側開口部と、前記バスバーに上下方向に貫通して設けられた貫通孔部とからなる請求項１に記載のインサート成形品。The fastening member includes a nut provided with the female thread portion and a bus bar on which the lower end portion of the nut is placed.
The insert molded product according to claim 1, wherein the counterbore portion includes a lower opening portion of the nut and a through hole portion provided through the bus bar in the vertical direction. 前記ナットは、前記バスバーと反対側の上端部が閉じた袋状のナットとされ、前記ナットの上端部は、前記ハウジングから外部に露出している請求項２に記載のインサート成形品。 The insert-molded product according to claim 2, wherein the nut is a bag-shaped nut having an upper end portion opposite to the bus bar closed, and the upper end portion of the nut is exposed to the outside from the housing.
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