JP2019181725A - Insert molded article and method for molding the same - Google Patents

Insert molded article and method for molding the same Download PDF

Info

Publication number
JP2019181725A
JP2019181725A JP2018072112A JP2018072112A JP2019181725A JP 2019181725 A JP2019181725 A JP 2019181725A JP 2018072112 A JP2018072112 A JP 2018072112A JP 2018072112 A JP2018072112 A JP 2018072112A JP 2019181725 A JP2019181725 A JP 2019181725A
Authority
JP
Japan
Prior art keywords
columnar member
mold
molded product
outer periphery
insert
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2018072112A
Other languages
Japanese (ja)
Other versions
JP6892409B2 (en
Inventor
徳雄 齋藤
Tokuo Saito
徳雄 齋藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nifco Inc
Original Assignee
Nifco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nifco Inc filed Critical Nifco Inc
Priority to JP2018072112A priority Critical patent/JP6892409B2/en
Publication of JP2019181725A publication Critical patent/JP2019181725A/en
Application granted granted Critical
Publication of JP6892409B2 publication Critical patent/JP6892409B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

To provide the insert molded article and the method for molding the same, that can push and cut a resin by contact between a stepped part of a columnar member and a mold, and can reliably prevent an end face of a projecting edge from being covered with the resin.SOLUTION: The method for molding the insert molded article comprises: closing the mold with the columnar member (for example, a cylindrical member 20) supported on a molding surface of the mold (30, 40), insert molding the columnar member (20) by injecting and filling the resin into the mold (30, 40), forming an outer periphery of the protruding edge part (61) thinner than the outer periphery of the columnar member (20), and forming the stepped part (62) that contacts the mold (30, 40) at one end, wherein the columnar member (20) has the protruding edge part (61) protruding outward in an axial direction from at least one end of the columnar member (20), and the stepped part is located between the outer periphery of the projecting edge part (61) and the outer periphery of the columnar member (20) and is lower than the end surface of the projecting edge part (61).SELECTED DRAWING: Figure 1

Description

この発明は、柱状部材がインサート成形されたインサート成形品及びその成形方法であって、柱状部材の段差部と金型との接触により、樹脂を押し切ることができ、突縁部の端面における樹脂かぶりを確実に防止することができるようにしたものである。   The present invention relates to an insert molded product in which a columnar member is insert-molded and a molding method therefor, wherein the resin can be pushed out by contact between the stepped portion of the columnar member and the mold, and the resin cover on the end surface of the protruding edge portion Can be surely prevented.

従来、ハウジングと一体に樹脂成形された締結用フランジにおいて、ボルトが挿通される部分に、金属パイプをインサート成形する「ボルト締結用フランジおよびその製造方法」が知られている（特許文献１の段落番号「００３４」及び図２参照）。
上記従来の金属パイプにおいて、フランジからの抜け落ち防止用の拡径部（肉厚部）には、端面との間で選択的に縮径されて段差部を形成する縮径部を備えていた（特許文献１の段落番号「００３４」）。
上記従来の段差部において、その寸法を、フランジを形成する樹脂材料の先端部が縮径部の周面に到達する以前に、少なくとも金属パイプの端面に到達する以前に固化されるように設定していた（特許文献１の段落番号「００３５」）。 Conventionally, there is known a “bolt fastening flange and its manufacturing method” in which a metal pipe is insert-molded in a portion through which a bolt is inserted in a fastening flange molded integrally with a housing (see paragraph of Patent Document 1). No. “0034” and FIG. 2).
In the conventional metal pipe, the diameter-enlarged portion (thickness portion) for preventing falling off from the flange is provided with a diameter-reduced portion that is selectively reduced in diameter with the end surface to form a stepped portion ( Paragraph number “0034” of Patent Document 1).
In the above conventional stepped portion, the dimension is set so that the tip of the resin material forming the flange is solidified before reaching the peripheral surface of the reduced diameter portion and at least before reaching the end surface of the metal pipe. (Paragraph number “0035” of Patent Document 1).

特許第4534839号公報Japanese Patent No. 4534839

しかし、上記した従来の「ボルト締結用フランジおよびその製造方法」では、樹脂材料の流動性により、金属パイプの端面に達し、当該端面に樹脂がかぶる可能性があった。
金属パイプの端面の樹脂かぶりが発生すると、相手ボルトとのメタルタッチの関係が失われ、ボルトのゆるみが発生し易くなる。
これに対し、上記従来の段差部の寸法を長くすると、金属パイプの大型化により、フランジが大型化したり、或いは大型化を避けると成形品の肉厚が薄くなり、強度が低下するおそれがあった。
そこで、各請求項にそれぞれ記載された各発明は、上記した従来の技術の有する問題点に鑑みてなされたものであり、その目的とするところは、次の点にある。 However, in the above-described conventional “bolt fastening flange and method for manufacturing the same”, there is a possibility that the end surface of the metal pipe is reached due to the fluidity of the resin material, and the end surface is covered with the resin.
When the resin cover of the end face of the metal pipe occurs, the metal touch relationship with the mating bolt is lost, and the bolt is liable to loosen.
On the other hand, when the dimension of the above conventional stepped portion is made longer, the flange becomes larger due to the increase in the size of the metal pipe, or if the increase in size is avoided, the thickness of the molded product becomes thinner and the strength may be reduced. It was.
Accordingly, each invention described in each claim has been made in view of the problems of the conventional techniques described above, and the object thereof is as follows.

（請求項１）
請求項１に記載の発明は、次の点を目的とする。
すなわち、請求項１に記載の発明は、柱状部材の少なくとも一端部に、突縁部の端面に対して低くなり、金型と接触する段差部を形成することで、当該段差部と金型との接触により、樹脂を押し切ることができ、突縁部の端面における樹脂かぶりを確実に防止することができるようにしたものである。 (Claim 1)
The object of the present invention is as follows.
That is, in the invention according to claim 1, the stepped portion and the mold are formed by forming a stepped portion that is lower than the end face of the protruding edge portion and contacts the mold at least at one end of the columnar member. By this contact, the resin can be pushed out, and the resin fogging at the end face of the protruding edge can be surely prevented.

（請求項２）
請求項２に記載の発明は、上記した請求項１に記載の発明の目的に加え、次の点を目的とする。
すなわち、請求項２に記載の発明は、フランジ部に段差部を位置させることで、段差部と金型との接触面積を増加させることができるようにしたものである。 (Claim 2)
The second aspect of the invention has the following object in addition to the object of the first aspect of the invention.
That is, according to the second aspect of the present invention, the contact area between the stepped portion and the mold can be increased by positioning the stepped portion on the flange portion.

（請求項３）
請求項３に記載の発明は、上記した請求項１又は請求項２に記載の発明の目的に加え、次の点を目的とする。
すなわち、請求項３に記載の発明は、柱状部材の高さの途中に凹凸部を形成することで、成形品との機械的な結合力を増加させることができるようにしたものである。 (Claim 3)
The invention described in claim 3 has the following object in addition to the object of the invention described in claim 1 or claim 2.
That is, the invention described in claim 3 is configured such that the mechanical coupling force with the molded product can be increased by forming the uneven portion in the middle of the height of the columnar member.

（請求項４）
請求項４に記載の発明は、上記した請求項１〜３のいずれか１項に記載の発明の目的に加え、次の点を目的とする。
すなわち、請求項４に記載の発明は、成形品の端面より段差部を高く形成することで、当該段差部と金型との接触により樹脂を確実に押し切ることができるようにしたものである。 (Claim 4)
The invention according to claim 4 has the following object in addition to the object of the invention according to any one of claims 1 to 3.
That is, in the invention described in claim 4, by forming the stepped portion higher than the end face of the molded product, the resin can be surely pushed out by the contact between the stepped portion and the mold.

（請求項５）
請求項５に記載の発明は、上記した請求項１〜４のいずれか１項に記載の発明の目的に加え、次の点を目的とする。
すなわち、請求項５に記載の発明は、成形時に、金型の樹脂押し切り部を、成形品の段差部に接触させることで、ねじ孔部に向かって進行する樹脂を押し切ることができるようにしたものである。 (Claim 5)
The invention described in claim 5 has the following object in addition to the object of the invention described in any one of claims 1 to 4.
That is, the invention according to claim 5 enables the resin proceeding toward the screw hole portion to be cut off by bringing the resin pressing portion of the mold into contact with the stepped portion of the molded product at the time of molding. Is.

（請求項６）
請求項６に記載の発明は、上記した請求項５に記載の発明の目的に加え、次の点を目的とする。
すなわち、請求項６に記載の発明は、成形品の前記突縁部がはまり込む環状溝を金型に形成し、当該環状溝の底部を、柱状部材において、その突縁部の端面と離れて位置させることで、突縁部の端面における樹脂かぶりを確実に防止することができるようにしたものである。 (Claim 6)
The invention described in claim 6 has the following object in addition to the object of the invention described in claim 5 described above.
That is, in the invention according to claim 6, the annular groove into which the protruding portion of the molded product is fitted is formed in the mold, and the bottom of the annular groove is separated from the end surface of the protruding portion in the columnar member. By being positioned, it is possible to reliably prevent the resin fogging on the end face of the projecting edge.

各請求項にそれぞれ記載された各発明は、上記した各目的を達成するためになされたものであり、各発明の特徴点を図面に示した発明の実施の形態を用いて、以下に説明する。
なお、カッコ内の符号は、発明の実施の形態において用いた符号を示し、本発明の技術的範囲を限定するものではない。
また、図面番号も、発明の実施の形態において用いた図番を示し、本発明の技術的範囲を限定するものではない。 Each invention described in each claim has been made to achieve each of the above-mentioned objects, and features of each invention will be described below using embodiments of the invention shown in the drawings. .
In addition, the code | symbol in parenthesis shows the code | symbol used in embodiment of invention, and does not limit the technical scope of this invention.
Also, the drawing numbers indicate the drawing numbers used in the embodiments of the invention and do not limit the technical scope of the present invention.

（請求項１）
請求項１に記載の発明は、次の点を特徴とする。
第１に、例えば図５〜図７に示すように、金型（２個の金型30,40のうち、例えば下側金型40）の成形面に柱状部材（例えば筒状部材20）を支持した状態で型閉じし、金型(30,40)内に樹脂を射出、充填することにより柱状部材（例えば筒状部材20）がインサート成形された成形品(10)である。 (Claim 1)
The invention described in claim 1 is characterized by the following points.
First, as shown in FIGS. 5 to 7, for example, a columnar member (for example, the cylindrical member 20) is formed on the molding surface of the mold (for example, the lower mold 40 of the two molds 30 and 40). A molded product (10) in which a columnar member (for example, a cylindrical member 20) is insert-molded by closing the mold in a supported state and injecting and filling resin into the mold (30, 40).

ここで、「柱状部材」として、例えば図４に示すように、「筒状部材(20)」を例示したが、これに限定されず、筒状部材(20)のねじ孔部(21)の無い、例えば図９及び図１０に示すように、「棒状部材(200,300)」としてもよい。
また、「筒状部材(20)」に、例えば図４に示すように、ねじ孔部(21)を形成したが、これに限定されず、図示しないが、筒状部材(20)のねじ孔部(21)のねじ溝を省き、単なる穴状としてもよい。 Here, as the “columnar member”, for example, as shown in FIG. 4, the “tubular member (20)” is illustrated, but the present invention is not limited to this, and the screw hole portion (21) of the cylindrical member (20) is not limited thereto. For example, as shown in FIGS. 9 and 10, “bar-shaped members (200, 300)” may be used.
Further, as shown in FIG. 4, for example, a screw hole portion (21) is formed in the “tubular member (20)”. However, the present invention is not limited to this, but the screw hole portion of the cylindrical member (20) is not shown. The thread groove of the portion (21) may be omitted and a simple hole shape may be used.

さらに、「筒状部材(20)」のねじ孔部(21)を、例えば図４に示すように、一端部を塞いだ袋穴としたが、これに限定されず、例えば図８に示すように、「筒状部材(100)」のねじ孔部(101)の貫通穴としてもよい。
また、「柱状部材」として、例えば図４に示すように、「筒状部材(20)」のように、円筒形のものや、例えば図９に示すように、「棒状部材(200,300)」のように、円柱形のものを例示したが、これに限定されず、図示しないが、角筒形としたり、或いは、例えば図１０に示すように、角柱形に形成してもよい。 Furthermore, although the screw hole portion (21) of the “tubular member (20)” is a bag hole with one end closed as shown in FIG. 4 for example, the present invention is not limited to this, for example as shown in FIG. Further, it may be a through hole of the screw hole portion (101) of the “tubular member (100)”.
Further, as the “columnar member”, for example, as shown in FIG. 4, a cylindrical member such as “cylindrical member (20)”, or for example, “rod-like member (200, 300)” as shown in FIG. As described above, the cylindrical shape is exemplified, but the invention is not limited to this, and although not illustrated, it may be a rectangular tube shape or may be formed in a prismatic shape, for example, as shown in FIG.

第２に、柱状部材（例えば筒状部材20）には、例えば図４に示すように、突縁部(61)を備える。
突縁部(61)は、例えば図４に示すように、柱状部材（例えば筒状部材20）の少なくとも一端部から軸方向の外向きに突出するものである。
第３に、突縁部(61)の外周は、例えば図４に示すように、柱状部材（例えば筒状部材20）の外周より細く形成する。 Second, the columnar member (for example, the cylindrical member 20) is provided with a projecting edge portion (61) as shown in FIG.
For example, as shown in FIG. 4, the projecting edge portion (61) projects outward in the axial direction from at least one end of a columnar member (for example, the cylindrical member 20).
Third, as shown in FIG. 4, for example, the outer periphery of the projecting edge portion (61) is formed thinner than the outer periphery of a columnar member (for example, the cylindrical member 20).

第４に、柱状部材（例えば筒状部材20）の一端部には、例えば図４に示すように、突縁部(61)の外周と柱状部材（例えば筒状部材20）の外周との間に位置し、突縁部(61)の端面に対して低くなり、例えば図５〜図７に示すように、金型（２個の金型30,40のうち、例えば下側金型40）と接触する段差部(62)を形成した。   Fourth, at one end of the columnar member (for example, the cylindrical member 20), as shown in FIG. 4, for example, between the outer periphery of the protruding portion (61) and the outer periphery of the columnar member (for example, the cylindrical member 20). And is lower than the end surface of the projecting edge portion (61). For example, as shown in FIGS. 5 to 7, a mold (for example, the lower mold 40 of the two molds 30, 40) is used. A stepped portion (62) in contact with was formed.

（請求項２）
請求項２に記載の発明は、上記した請求項１に記載の発明の特徴点に加え、次の点を特徴とする。
すなわち、柱状部材（例えば筒状部材20）の一端部には、例えば図４に示すように、当該柱状部材（例えば筒状部材20）の外周から半径方向に外向きに張り出し、突縁部(61)との間に段差部(62)を有するフランジ部(60)を備えている。 (Claim 2)
The invention described in claim 2 is characterized by the following points in addition to the characteristics of the invention described in claim 1 described above.
That is, as shown in FIG. 4, for example, as shown in FIG. 4, the columnar member (for example, the cylindrical member 20) projects outward in the radial direction from the outer periphery of the columnar member (for example, the cylindrical member 20). 61) and a flange portion (60) having a step portion (62).

（請求項３）
請求項３に記載の発明は、上記した請求項１又は請求項２に記載の発明の特徴点に加え、次の点を特徴とする。
すなわち、柱状部材（例えば筒状部材20）の外周には、例えば図４に示すように、当該柱状部材（例えば筒状部材20）の高さの途中に位置する凹凸部を形成している。
ここで、「凹凸部」としては、例えば図４に示すように、第１、第２環状凸部(72,73)、第１、第２環状溝(74,75）、くぼみ部(76)が相当する。
なお、第１、第２環状凸部(72,73)を、２個形成したが、これに限定されず、１個或いは３個以上形成してもよい。 (Claim 3)
The invention described in claim 3 is characterized by the following points in addition to the characteristics of the invention described in claim 1 or claim 2 described above.
That is, on the outer periphery of the columnar member (for example, the cylindrical member 20), as shown in FIG. 4, for example, an uneven portion located in the middle of the height of the columnar member (for example, the cylindrical member 20) is formed.
Here, as the “concavo-convex portion”, for example, as shown in FIG. 4, the first and second annular convex portions (72, 73), the first and second annular grooves (74, 75), and the recessed portion (76). Corresponds.
In addition, although the 1st, 2nd annular convex part (72,73) was formed two pieces, it is not limited to this, You may form one piece or 3 or more pieces.

（請求項４）
請求項４に記載の発明は、上記した請求項１〜３のいずれか１項に記載の発明の特徴点に加え、次の点を特徴とする。
すなわち、段差部(62)は、図示しないが、成形品(10)の端面(11)より高く形成されている。 (Claim 4)
The invention described in claim 4 is characterized by the following points in addition to the features of the invention described in any one of claims 1-3.
That is, the stepped portion (62) is formed higher than the end surface (11) of the molded product (10), although not shown.

（請求項５）
請求項５に記載の発明は、上記した請求項１〜４のいずれか１項に記載の発明の特徴点に加え、次の点を特徴とする。
すなわち、金型（２個の金型30,40のうち、例えば下側金型40）には、例えば図５〜図７に示すように、柱状部材（例えば筒状部材20）の段差部(62)に接触し、ねじ孔部(21)に向かって進行する樹脂を押し切る樹脂押し切り部(41)を形成している。 (Claim 5)
The invention described in claim 5 is characterized by the following points in addition to the characteristics of the invention described in any one of claims 1 to 4.
That is, in the mold (for example, the lower mold 40 of the two molds 30 and 40), as shown in FIG. 5 to FIG. 7, for example, a step portion (for example, a cylindrical member 20) ( 62), and a resin push-off portion (41) that pushes off the resin traveling toward the screw hole portion (21) is formed.

（請求項６）
請求項６に記載の発明は、上記した請求項５に記載の発明の特徴点に加え、次の点を特徴とする。
第１に、金型（２個の金型30,40のうち、例えば下側金型40）には、例えば図５〜図７に示すように、柱状部材（例えば筒状部材20）の突縁部(61)がはまり込む環状溝(42)を形成する。
第２に、環状溝(42)の底部を、例えば図７に示すように、突縁部(61)の端面と離れて位置させる。 (Claim 6)
The invention described in claim 6 has the following features in addition to the features of the invention described in claim 5 described above.
First, the mold (for example, the lower mold 40 of the two molds 30 and 40) has a protrusion of a columnar member (for example, the cylindrical member 20) as shown in FIGS. An annular groove (42) into which the edge (61) is fitted is formed.
Secondly, the bottom of the annular groove (42) is positioned away from the end surface of the projecting edge (61), for example, as shown in FIG.

本発明は、以上のように構成されているので、以下に記載されるような効果を奏する。
（請求項１）
請求項１に記載の発明によれば、次のような効果を奏する。
すなわち、請求項１に記載の発明によれば、柱状部材の少なくとも一端部に、突縁部の端面に対して低くなり、金型と接触する段差部を形成することで、当該段差部と金型との接触により、樹脂を押し切ることができ、突縁部の端面における樹脂かぶりを確実に防止することができる。 Since this invention is comprised as mentioned above, there exists an effect as described below.
(Claim 1)
According to invention of Claim 1, there exist the following effects.
That is, according to the first aspect of the present invention, the stepped portion and the metal mold are formed by forming a stepped portion that is lower than the end face of the protruding edge portion and contacts the mold at least at one end of the columnar member. By contact with the mold, the resin can be pushed out, and the resin fogging on the end face of the projecting edge can be reliably prevented.

（請求項２）
請求項２に記載の発明によれば、上記した請求項１に記載の発明の効果に加え、次のような効果を奏する。
すなわち、請求項２に記載の発明は、フランジ部に段差部を位置させることで、段差部と金型との接触面積を増加させることができる。 (Claim 2)
According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the following effect is obtained.
That is, the invention according to claim 2 can increase the contact area between the stepped portion and the mold by positioning the stepped portion on the flange portion.

（請求項３）
請求項３に記載の発明によれば、上記した請求項１又は請求項２に記載の発明の効果に加え、次のような効果を奏する。
すなわち、請求項３に記載の発明によれば、柱状部材の高さの途中に凹凸部を形成することで、成形品との機械的な結合力を増加させることができる。 (Claim 3)
According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the following effect is obtained.
That is, according to the invention described in claim 3, the mechanical coupling force with the molded product can be increased by forming the uneven portion in the middle of the height of the columnar member.

（請求項４）
請求項４に記載の発明によれば、上記した請求項１〜３のいずれか１項に記載の発明の効果に加え、次のような効果を奏する。
すなわち、請求項４に記載の発明によれば、成形品の端面より段差部を高く形成することで、当該段差部と金型との接触により樹脂を確実に押し切ることができる。 (Claim 4)
According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1-3, the following effect is provided.
That is, according to the invention described in claim 4, by forming the stepped portion higher than the end face of the molded product, the resin can be surely pushed out by the contact between the stepped portion and the mold.

（請求項５）
請求項５に記載の発明によれば、上記した請求項１〜４のいずれか１項に記載の発明の効果に加え、次のような効果を奏する。
すなわち、請求項５に記載の発明によれば、成形時に、金型の樹脂押し切り部を、成形品の段差部に接触させることで、ねじ孔部に向かって進行する樹脂を押し切ることができる。 (Claim 5)
According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1-4, the following effect is provided.
That is, according to the fifth aspect of the present invention, the resin proceeding toward the screw hole can be pushed out by bringing the resin push-off portion of the mold into contact with the stepped portion of the molded product at the time of molding.

（請求項６）
請求項６に記載の発明によれば、上記した請求項５に記載の発明の効果に加え、次のような効果を奏する。
すなわち、請求項６に記載の発明によれば、成形品の前記突縁部がはまり込む環状溝を金型に形成し、当該環状溝の底部を、柱状部材において、その突縁部の端面と離れて位置させることで、突縁部の端面における樹脂かぶりを確実に防止することができる。 (Claim 6)
According to the invention described in claim 6, in addition to the effect of the invention described in claim 5, the following effect is obtained.
That is, according to the invention described in claim 6, the annular groove into which the projecting edge portion of the molded product fits is formed in the mold, and the bottom of the annular groove is connected to the end surface of the projecting edge portion in the columnar member. By disposing them apart, it is possible to reliably prevent resin fogging at the end face of the protruding edge.

図３のＡＡ線に沿う一部断面図である。FIG. 4 is a partial cross-sectional view taken along line AA in FIG. 3. 成形品の斜視図である。It is a perspective view of a molded product. 成形品の平面図である。It is a top view of a molded product. 柱状部材の一例である筒状部材を説明するものであり、同図（ａ）は正面図、同図（ｂ）は平面図、同図（ｃ）は同図（ｂ）のＢＢ断面図である。The cylindrical member which is an example of the columnar member will be described. FIG. 4A is a front view, FIG. 2B is a plan view, and FIG. 4C is a cross-sectional view taken along the line BB in FIG. is there. 金型の一部断面図である。It is a partial cross section figure of a metal mold | die. 金型を型開きした様態の断面図である。It is sectional drawing of the mode which opened the metal mold | die. 下側金型の一部拡大図である。It is a partially expanded view of a lower mold. 本発明の第２の実施例に係る柱状部材の他の一例である筒状部材を説明するものであり、同図（ａ）は正面図、同図（ｂ）は平面図、同図（ｃ）は同図（ｂ）のＣＣ断面図である。The cylindrical member which is another example of the columnar member which concerns on 2nd Example of this invention is demonstrated, the figure (a) is a front view, the figure (b) is a top view, the figure (c) ) Is a CC cross-sectional view of FIG. 本発明の第３の実施例に係る柱状部材の一例である棒状部材を説明するものであり、同図（ａ）は正面図、同図（ｂ）は平面図、同図（ｃ）は同図（ｂ）のＤＤ断面図である。The rod-shaped member which is an example of the columnar member which concerns on 3rd Example of this invention is demonstrated, The figure (a) is a front view, The figure (b) is a top view, The figure (c) is the same. It is DD sectional drawing of a figure (b). 本発明の第４の実施例に係る柱状部材の他の一例である棒状部材を説明するものであり、同図（ａ）は正面図、同図（ｂ）は平面図、同図（ｃ）は同図（ｂ）のＥＥ断面図である。The rod-shaped member which is another example of the columnar member which concerns on the 4th Example of this invention is demonstrated, The figure (a) is a front view, The figure (b) is a top view, The figure (c). These are EE sectional drawing of the same figure (b).

（成形品10）
図１〜図７を用いて本発明の第１の実施の形態について説明する。
図１〜図３中、10は成形品であり、締結部位に使用される。
成形品10は、図５〜図７に示すように、金型、２個の金型30,40のうち、例えば下側金型40の成形面に設けられるピン部材50に筒状部材20を嵌合して支持した状態で型閉じし、金型30,40内に樹脂を射出、充填することにより筒状部材20がインサート成形される。 (Molded product 10)
A first embodiment of the present invention will be described with reference to FIGS.
1-3, 10 is a molded product and is used for a fastening part.
As shown in FIGS. 5 to 7, the molded product 10 includes a cylindrical member 20 on a pin member 50 provided on a molding surface of the lower mold 40, for example, of two molds 30 and 40. The cylindrical member 20 is insert-molded by closing the mold while being fitted and supported, and injecting and filling the resin into the molds 30 and 40.

（筒状部材20）
筒状部材20は、金属製のナットであり、図１〜図４に示すように、成形品10にインサート成形され、ねじ孔部21にボルト（図示せず）がねじ込まれるものである。
なお、筒状部材20に、図４に示すように、ねじ孔部21を形成したが、これに限定されず、図示しないが、ねじ溝を省き、単なる穴状としてもよい。また、筒状部材20を、円筒形に形成したが、これに限定されず、図示しないが、多角形の角筒形としてもよいし、又、外周を円形としたが、これに限定されず、外周を楕円形や長円形に形成してもよい。 (Cylindrical member 20)
The cylindrical member 20 is a metal nut, and is insert-molded into the molded product 10 and a bolt (not shown) is screwed into the screw hole 21 as shown in FIGS.
In addition, although the screw hole part 21 was formed in the cylindrical member 20 as shown in FIG. 4, it is not limited to this, Although not shown, it is good also as a simple hole shape by omitting a screw groove. In addition, the cylindrical member 20 is formed in a cylindrical shape, but is not limited thereto, and although not illustrated, a polygonal square cylindrical shape may be used, and the outer periphery is circular, but the present invention is not limited thereto. The outer periphery may be formed in an elliptical shape or an oval shape.

筒状部材20には、図４に示すように、大別すると、各部を有する。
なお、次の（１）及び（２）については後述する。
（１）フランジ部60
（２）胴部70
なお、筒状部材20の各部は、上記した（１）及び（２）に限定されず、後述するが、フランジ部60を省き、後述する突縁部61を、筒状部材20の端面から軸方向の外向きに突出させてもよい。 As shown in FIG. 4, the cylindrical member 20 has various parts when roughly classified.
The following (1) and (2) will be described later.
(1) Flange part 60
(2) Body 70
In addition, each part of the cylindrical member 20 is not limited to the above (1) and (2), but will be described later. However, the flange part 60 is omitted, and the protruding edge part 61 described later is pivoted from the end surface of the cylindrical member 20. You may project outward in the direction.

（フランジ部60）
フランジ部60は、図４に示すように、ねじ孔部21の開口面の周囲に位置し、当該筒状部材20の外周から半径方向に外向きに環状に張り出すものである。
フランジ部60には、次の各部を有する。
なお、次の（１）及び（２）については後述する。
（１）突縁部61
（２）段差部62 (Flange part 60)
As shown in FIG. 4, the flange portion 60 is positioned around the opening surface of the screw hole portion 21, and projects outwardly from the outer periphery of the tubular member 20 in an annular shape in the radial direction.
The flange part 60 has the following parts.
The following (1) and (2) will be described later.
(1) Edge 61
(2) Stepped portion 62

（胴部70）
胴部70は、図４に示すように、フランジ部60から円筒形に垂下するものであり、フランジ部60からねじ孔部21が一連に形成されている。
胴部70は、図４に示すように、次の各部を有する。
なお、次の（１）〜（３）については後述する。
（１）底部71
（２）第１環状凸部72
（３）第２環状凸部73
なお、環状凸部72,73を２個形成したが、これに限定されず、１個或いは３個以上形成してもよい。 (Torso 70)
As shown in FIG. 4, the body portion 70 hangs down in a cylindrical shape from the flange portion 60, and the screw hole portion 21 is formed in series from the flange portion 60.
The trunk | drum 70 has the following each part, as shown in FIG.
The following (1) to (3) will be described later.
(1) Bottom 71
(2) First annular protrusion 72
(3) Second annular projection 73
In addition, although the two annular convex parts 72 and 73 were formed, it is not limited to this, You may form one or three or more.

（突縁部61）
突縁部61は、図４に示すように、フランジ部60からねじ孔部21の開口方向に向かって突出し、開口面を環状に取り囲むものである。
突縁部61の内周は、図４（ｃ）に示すように、ねじ孔部21の開口面に向かって開いた円錐台形形に形成され、図示しないが、ボルトを挿入し易くしている。 (Bump 61)
As shown in FIG. 4, the projecting edge portion 61 protrudes from the flange portion 60 toward the opening direction of the screw hole portion 21, and surrounds the opening surface in an annular shape.
As shown in FIG. 4C, the inner periphery of the projecting edge portion 61 is formed in a truncated cone shape that opens toward the opening surface of the screw hole portion 21, and although not shown, it is easy to insert a bolt. .

なお、突縁部61を、フランジ部60から突出させたが、これに限定されず、突縁部61は、筒状部材20の少なくとも一端部から軸方向の外向きに突出するものであれば足りる。
すなわち、図示しないが、フランジ部60を省いた場合には、突縁部61を、筒状部材20の端面から軸方向の外向きに突出させ、当該突縁部61の外周を、筒状部材20の外周より細く形成させる。 Note that the protruding edge portion 61 is protruded from the flange portion 60, but is not limited thereto, and the protruding edge portion 61 is not limited to this as long as it protrudes outward in the axial direction from at least one end portion of the tubular member 20. It ’s enough.
That is, although not shown, when the flange portion 60 is omitted, the protruding edge portion 61 protrudes outward in the axial direction from the end surface of the cylindrical member 20, and the outer periphery of the protruding edge portion 61 is connected to the cylindrical member. It is made thinner than the outer periphery of 20.

また、突縁部61には、図１〜図４に示すように、ねじ孔部21が開口するが、ねじ孔部21の開口縁部を、軸方向の外向きに徐々に開いた円錐台形型に形成し、図示しないが、ボルトを挿入し易くしている。   Moreover, as shown in FIGS. 1-4, the screw hole part 21 opens in the protruding edge part 61, but the opening edge part of the screw hole part 21 is a truncated cone shape gradually opened outward in the axial direction. Although it forms in a type | mold and is not shown in figure, it is easy to insert a volt | bolt.

（段差部62）
段差部62は、図４に示すように、フランジ部60に位置し、突縁部61の端面に対して低くなり、図５〜図７に示すように、２個の金型30,40のうち、下側金型40の後述する樹脂押し切り部41と接触するものである。
段差部62は、図１に示すように、成形品10の端面11と同一の平面に形成する。
なお、段差部62を、図示しないが、成形品10の端面11より高く形成してもよい。 (Step 62)
As shown in FIG. 4, the stepped portion 62 is located at the flange portion 60 and becomes lower than the end surface of the protruding edge portion 61, and as shown in FIGS. Among them, the lower die 40 comes into contact with a resin push-off portion 41 described later.
As shown in FIG. 1, the stepped portion 62 is formed on the same plane as the end surface 11 of the molded product 10.
Although not shown, the stepped portion 62 may be formed higher than the end surface 11 of the molded product 10.

また、段差部62を、フランジ部60に形成したが、これに限定されず、図示しないが、段差部62は、突縁部61の外周と筒状部材20の外周との間に位置し、突縁部61の端面に対して低くなり、図５〜図７に示すように、金型（２個の金型30,40のうち、例えば下側金型40）と接触するものであれば足りる。
すなわち、図示しないが、フランジ部60を省いた場合には、段差部62を、筒状部材20の端面に位置させる。 Further, although the stepped portion 62 is formed in the flange portion 60, but not limited to this, although not illustrated, the stepped portion 62 is located between the outer periphery of the projecting edge portion 61 and the outer periphery of the tubular member 20, If it becomes low with respect to the end surface of the protruding portion 61 and comes into contact with a mold (for example, the lower mold 40 of the two molds 30 and 40) as shown in FIGS. It ’s enough.
That is, although not shown, when the flange portion 60 is omitted, the stepped portion 62 is positioned on the end surface of the tubular member 20.

（底部71）
底部71は、図４（ａ）及び（ｂ）に示すように、同図において胴部70の下端部に位置し、ねじ孔部21の下端部を閉塞するものである。
底部71は、胴部70の外周から上方に斜面を向けた断面台形形に張り出している。 (Bottom 71)
As shown in FIGS. 4A and 4B, the bottom portion 71 is positioned at the lower end portion of the body portion 70 in FIG. 4 and closes the lower end portion of the screw hole portion 21.
The bottom portion 71 projects in a trapezoidal shape with a slope facing upward from the outer periphery of the body portion 70.

（第１環状凸部72）
第１環状凸部72は、図４（ａ）及び（ｂ）に示すように、胴部70の外周から環状の凸状に張り出し、同図においてフランジ部60の下方に離れて位置する。
第１環状凸部72の上面と、フランジ部60の下面との間には、環状に凹んだ第１環状溝74が形成される。第１環状溝74には、図１に示すように、成形時に樹脂が充填されることで、筒状部材20の軸方向の抜けを阻止する。 (First annular convex part 72)
As shown in FIGS. 4A and 4B, the first annular convex portion 72 protrudes from the outer periphery of the body portion 70 into an annular convex shape, and is located below the flange portion 60 in the drawing.
Between the upper surface of the first annular convex portion 72 and the lower surface of the flange portion 60, a first annular groove 74 that is annularly recessed is formed. As shown in FIG. 1, the first annular groove 74 is filled with resin at the time of molding to prevent the cylindrical member 20 from coming off in the axial direction.

また、第１環状凸部72及び第１環状溝74は、後述する第２環状凸部73、第１環状溝74及びくぼみ部76とともに、「凹凸部」を形成する。
凹凸部は、図４に示すように、筒状部材20の外周であって、筒状部材20の高さの途中に位置し、凹凸状に形成されたものである。 The first annular convex portion 72 and the first annular groove 74 form an “uneven portion” together with a second annular convex portion 73, the first annular groove 74, and the recessed portion 76 described later.
As shown in FIG. 4, the concavo-convex portion is an outer periphery of the cylindrical member 20, located in the middle of the height of the cylindrical member 20, and formed in an uneven shape.

（第２環状凸部73）
第２環状凸部73は、図４（ａ）及び（ｂ）に示すように、第１環状凸部72と底部71との間に位置し、第１環状凸部72と同様に、胴部70の外周から環状の凸状に張り出すものである。
第２環状凸部73の上面と、第１環状凸部72の下面との間には、環状に凹んだ第２環状溝75が形成される。第２環状溝75には、第１環状溝74と同様に、図１に示すように、成形時に樹脂が充填されることで、筒状部材20の軸方向の抜けを阻止する。 (Second annular projection 73)
As shown in FIGS. 4A and 4B, the second annular convex portion 73 is located between the first annular convex portion 72 and the bottom portion 71, and similarly to the first annular convex portion 72, the body portion It protrudes from the outer periphery of 70 into an annular convex shape.
Between the upper surface of the second annular convex portion 73 and the lower surface of the first annular convex portion 72, a second annular groove 75 that is recessed annularly is formed. Similar to the first annular groove 74, the second annular groove 75 is filled with resin at the time of molding, as shown in FIG. 1, thereby preventing the cylindrical member 20 from coming off in the axial direction.

また、第２環状凸部73の下面と、底部71の斜面との間には、胴部70の外周から環状にくぼんだくぼみ部76を形成している。くぼみ部76には、図１に示すように、第１環状溝74及び第２環状溝75と同様に、成形時に樹脂が充填されることで、筒状部材20の軸方向の抜けを阻止する。   Further, a recessed portion 76 that is recessed annularly from the outer periphery of the body portion 70 is formed between the lower surface of the second annular convex portion 73 and the slope of the bottom portion 71. As in the first annular groove 74 and the second annular groove 75, the hollow portion 76 is filled with resin at the time of molding, thereby preventing the cylindrical member 20 from coming off in the axial direction. .

（金型30,40）
金型30,40は、図５〜図７に示すように、筒状部材20をインサート成形するものであり、大別すると、図６において上側に位置する上側金型30と、下側に位置する下側金型40とから構成されている。 (Mold 30,40)
As shown in FIGS. 5 to 7, the molds 30 and 40 are for insert-molding the cylindrical member 20. When roughly classified, the upper mold 30 positioned on the upper side in FIG. 6 and the lower mold 30 are positioned on the lower side. The lower mold 40 is made up of.

（上側金型30）
上側金型30には、図５及び図６に示すように、成形品10の成形用のキャビティ31が形成され、当該キャビティ31はパーティングラインＰＬ、すなわちパーティング面に向かって開放する。 (Upper mold 30)
As shown in FIGS. 5 and 6, a cavity 31 for molding the molded product 10 is formed in the upper mold 30, and the cavity 31 opens toward a parting line PL, that is, a parting surface.

（下側金型40）
下側金型40は、図示しないが、キャビティのほか、図５〜図７に示すように、次の各部を有する。
なお、次の（１）〜（３）については後述する。
（１）ピン部材50
（２）樹脂押し切り部41
（３）環状溝42 (Lower mold 40)
Although not shown, the lower mold 40 has the following parts as shown in FIGS. 5 to 7 in addition to the cavity.
The following (1) to (3) will be described later.
(1) Pin member 50
(2) Resin push-off part 41
(3) Annular groove 42

（ピン部材50）
ピン部材50は、図５〜図７に示すように、成形面に立設され、筒状部材20のねじ孔部21内へ嵌合され、当該嵌合した状態において筒状部材20を支持するものである。 (Pin member 50)
As shown in FIGS. 5 to 7, the pin member 50 is erected on the molding surface, fitted into the screw hole 21 of the tubular member 20, and supports the tubular member 20 in the fitted state. Is.

（樹脂押し切り部41）
樹脂押し切り部41は、図５〜図７に示すように、成形時に、筒状部材20の段差部62に接触し、ねじ孔部21に向かって進行する樹脂を押し切るものである。
なお、樹脂押し切り部41を、パーティングラインＰＬ上に形成したが、これに限定されず、図示しないが、段差部62を、成形品10の端面11より高く形成した場合には、パーティングラインＰＬ、すなわちパーティング面より低く形成してもよい。 (Resin push-off part 41)
As shown in FIGS. 5 to 7, the resin push-off portion 41 comes into contact with the stepped portion 62 of the tubular member 20 during molding and pushes out the resin traveling toward the screw hole portion 21.
In addition, although the resin push-off part 41 was formed on the parting line PL, it is not limited to this, although not shown in figure, when the level | step-difference part 62 is formed higher than the end surface 11 of the molded article 10, a parting line You may form below PL, ie, a parting surface.

（環状溝42）
環状溝42は、図５〜図７に示すように、成形時に、筒状部材20の突縁部61がはまり込むものである。
環状溝42の環状の底部は、図７に示すように、突縁部61の端面と離れて位置させている。 (Annular groove 42)
As shown in FIGS. 5 to 7, the annular groove 42 is configured such that the protruding edge portion 61 of the tubular member 20 is fitted during molding.
As shown in FIG. 7, the annular bottom portion of the annular groove 42 is positioned away from the end surface of the projecting edge portion 61.

（成形方法）
上記した構成を有する金型30,40を用いた成形品10の成形方法について、図５及び図６を用いて説明する。
下側金型40のピン部材50には、上記した構成を有する筒状部材20のねじ孔部21をはめ込んで支持する。
つぎに、金型30,40を型閉じし、金型30,40内に樹脂を射出、充填することにより、筒状部材20がインサート成形された成形品10を成形する。 (Molding method)
A method for forming the molded article 10 using the molds 30 and 40 having the above-described configuration will be described with reference to FIGS.
The pin member 50 of the lower mold 40 is inserted and supported by the screw hole portion 21 of the cylindrical member 20 having the above-described configuration.
Next, the molds 30 and 40 are closed, and the molds 30 and 40 are injected and filled with resin to form the molded product 10 in which the cylindrical member 20 is insert-molded.

金型30,40内内への樹脂の充填時において、金型30,40内において、下側金型40の樹脂押し切り部41が、筒状部材20の段差部62に接触し、ねじ孔部21に向かって進行する樹脂が押し切られる。
このため、筒状部材20の突縁部61の端面における樹脂かぶりを確実に防止することができる。
また、筒状部材20の突縁部61が露呈することから、図示しないが、相手ボルト或いはナット等の金属部品とのメタルタッチの関係を維持でき、ボルトのゆるみの発生を防止できる。 At the time of filling the resin in the molds 30 and 40, the resin push-off part 41 of the lower mold 40 contacts the stepped part 62 of the cylindrical member 20 in the molds 30 and 40, and the screw hole part The resin traveling toward 21 is pushed out.
For this reason, it is possible to reliably prevent the resin fogging on the end surface of the protruding edge portion 61 of the cylindrical member 20.
Further, since the protruding portion 61 of the cylindrical member 20 is exposed, although not shown, the relationship of metal touch with a metal component such as a mating bolt or nut can be maintained, and the occurrence of loosening of the bolt can be prevented.

（第２の実施の形態）
図８を用いて、本発明の第２の実施の形態について説明する。
本実施の形態の特徴は、図８に示すように、筒状部材100のねじ孔部101を、貫通穴とした点である。
具体的には、第１に、筒状部材100は、金属製で、全体として円筒形に形成され、柱状部材を構成している。なお、筒状部材100を、円筒形に形成したが、これに限定されず、図示しないが、多角形の角筒形としてもよいし、又、外周を円形としたが、これに限定されず、外周を楕円形や長円形に形成してもよい。 (Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 8, the feature of the present embodiment is that the screw hole portion 101 of the tubular member 100 is a through hole.
Specifically, first, the cylindrical member 100 is made of metal and is formed in a cylindrical shape as a whole, and constitutes a columnar member. Although the cylindrical member 100 is formed in a cylindrical shape, it is not limited to this, and although not shown in the figure, it may be a polygonal square cylindrical shape, and the outer periphery is circular, but is not limited thereto. The outer periphery may be formed in an elliptical shape or an oval shape.

そして、筒状部材100には、上下に貫通するねじ孔部101を形成している。ねじ孔部101は、図４に示す第１の実施の形態に係るねじ孔部21が底部71が塞がれ、袋穴となっているのに対し、貫通穴である点で相違する。
なお、筒状部材100にねじ孔部101を形成したが、これに限定されず、図示しないが、ねじ溝を省き、単なる穴状としてもよい。 The cylindrical member 100 is formed with a screw hole portion 101 penetrating vertically. The screw hole portion 101 is different from the screw hole portion 21 according to the first embodiment shown in FIG. 4 in that the bottom portion 71 is closed and a bag hole is formed, whereas the screw hole portion 101 is a through hole.
Although the screw hole portion 101 is formed in the cylindrical member 100, the present invention is not limited to this, and although not shown, the screw groove may be omitted and a simple hole shape may be used.

第２に、筒状部材100は、図８に示すように、大別すると、次の各部を形成している。
（１）上側フランジ部110
上側フランジ部110は、図４に示す第１の実施の形態に係るフランジ部60と同一の構造に形成され、図８に示すように、上側突縁部111及び上側段差部112を有する。
（２）下側フランジ部120
下側フランジ部120は、上側フランジ部110と上下に対称に形成され、下側突縁部121及び下側段差部122を有する。 Secondly, as shown in FIG. 8, the cylindrical member 100 forms the following parts when roughly divided.
(1) Upper flange 110
The upper flange portion 110 is formed in the same structure as the flange portion 60 according to the first embodiment shown in FIG. 4, and has an upper protruding edge portion 111 and an upper stepped portion 112 as shown in FIG.
(2) Lower flange 120
The lower flange portion 120 is formed symmetrically with the upper flange portion 110 in the vertical direction, and includes a lower protruding edge portion 121 and a lower stepped portion 122.

（３）胴部130
胴部130は、上側フランジ部110と下側フランジ部120との間に位置し、全体が円筒形に形成されている。胴部130は、図４に示す第１の実施の形態に係る胴部70と同様に、図８に示すように、環状に所定の間隔で離れ、環状に張り出した計３個の第１環状凸部131、第２環状凸部132及び第３環状凸部133を形成している。 (3) Body 130
The trunk portion 130 is located between the upper flange portion 110 and the lower flange portion 120, and is formed in a cylindrical shape as a whole. As shown in FIG. 8, the trunk portion 130 is separated from the trunk portion 70 at a predetermined interval in the same manner as the trunk portion 70 according to the first embodiment shown in FIG. 4. A convex portion 131, a second annular convex portion 132, and a third annular convex portion 133 are formed.

また、３個の環状凸部131〜133及び上下のフランジ部110,120の間には、環状に凹んだ計４個の第１環状溝134、第２環状溝135、第３環状溝136及び第４環状溝137を形成している。
なお、環状凸部131〜133を、３個形成したが、これに限定されず、１個、２個、或いは４個以上形成してもよい。また、環状溝134〜137を、４個形成したが、これに限定されず、１個〜３個、或いは５個以上形成してもよい。 In addition, a total of four first annular grooves 134, second annular grooves 135, third annular grooves 136, and fourth annularly recessed between the three annular convex portions 131 to 133 and the upper and lower flange portions 110 and 120 are provided. An annular groove 137 is formed.
In addition, although the three cyclic | annular convex parts 131-133 were formed, it is not limited to this, You may form one, two, or four or more. Further, although four annular grooves 134 to 137 are formed, the present invention is not limited to this, and one to three, or five or more may be formed.

（筒状部材100の成形方法）
つぎに、筒状部材100の成形方法について説明する。
筒状部材100は、図４に示す第１の実施の形態に係る筒状部材20と同様に、図５〜図７に示すピン部材50を使用し、当該ピン部材50を、図示しないが、筒状部材100のねじ孔部101を挿入することで、金型30,40の成形面に筒状部材100を支持することでインサート成形が可能である。 (Method of forming tubular member 100)
Next, a method for forming the cylindrical member 100 will be described.
The cylindrical member 100 uses the pin member 50 shown in FIGS. 5 to 7 as in the cylindrical member 20 according to the first embodiment shown in FIG. Insert molding is possible by inserting the screw hole 101 of the cylindrical member 100 and supporting the cylindrical member 100 on the molding surfaces of the molds 30 and 40.

（第３の実施の形態）
図９を用いて、本発明の第３の実施の形態について説明する。
本実施の形態の特徴は、柱状部材を、図９に示すように、棒状部材200とした点である。
具体的には、第１に、棒状部材200は、金属製で、全体として円柱形に形成され、柱状部材を構成している。棒状部材200は、図４に示す第１の実施の形態に係る筒状部材20が、ねじ孔部21を有する円筒形に形成されているのに対し、円柱形である点で相違する。
なお、棒状部材200を、円柱形に形成し、外周を円形としたが、これに限定されず、図示しないが、外周を楕円形や長円形に形成してもよい。 (Third embodiment)
A third embodiment of the present invention will be described with reference to FIG.
The feature of this embodiment is that the columnar member is a rod-shaped member 200 as shown in FIG.
Specifically, first, the rod-shaped member 200 is made of metal and is formed in a columnar shape as a whole, and constitutes a columnar member. The rod-shaped member 200 is different in that the cylindrical member 20 according to the first embodiment shown in FIG. 4 is formed in a cylindrical shape having a screw hole portion 21 and is cylindrical.
In addition, although the rod-shaped member 200 is formed in a cylindrical shape and the outer periphery is circular, the outer periphery may be formed in an elliptical shape or an oval shape, although not limited thereto.

第２に、棒状部材200は、図９に示すように、大別すると、次の各部を形成している。
なお、次の（１）〜（３）については後述する。
（１）上側フランジ部210
（２）下側フランジ部220
（３）胴部230 Secondly, as shown in FIG. 9, the rod-shaped member 200 roughly forms the following parts.
The following (1) to (3) will be described later.
(1) Upper flange part 210
(2) Lower flange 220
(3) Body 230

（上側フランジ部210）
上側フランジ部210は、図４に示す第１の実施の形態に係るフランジ部60と同一の構造に形成され、図９に示すように、上側突縁部211及び上側段差部212を有する。 (Upper flange part 210)
The upper flange portion 210 is formed in the same structure as the flange portion 60 according to the first embodiment shown in FIG. 4, and has an upper protruding edge portion 211 and an upper step portion 212 as shown in FIG.

上側突縁部211には、当該上側突縁部211より外周が小さく、軸方向に円柱形に突出した上側突軸213を形成している。
上側突軸213は、図示しないが、突縁部311と共に、成形品10（図１及参照）の端面11から突出する。 The upper protruding portion 211 is formed with an upper protruding shaft 213 having an outer periphery smaller than that of the upper protruding portion 211 and protruding in a cylindrical shape in the axial direction.
Although not shown, the upper protruding shaft 213 protrudes from the end surface 11 of the molded product 10 (see FIG. 1) together with the protruding edge 311.

上側突軸213は、図示しないが、「軸」や、「ボス」（他部品を締結する際に使用される、結合部分）、「ステー」（支柱や、機械や構造物の一部の強度を補強する部材）等として使用されるものである。
なお、上側突軸213として、円柱形を例示したが、これに限定されず、角柱形に形成してもよい。 Although not shown, the upper protruding shaft 213 includes an “axis”, “boss” (joint portion used when fastening other parts), “stay” (strut, strength of part of machine or structure) And the like).
In addition, although the cylindrical shape was illustrated as the upper side protrusion shaft 213, it is not limited to this, You may form in a prismatic shape.

（下側フランジ部220）
下側フランジ部220は、上側フランジ部210と上下に対称に形成され、下側突縁部221、下側段差部222及び下側突軸223を有するものである。 (Lower flange 220)
The lower flange portion 220 is formed symmetrically with the upper flange portion 210 in the vertical direction, and has a lower protruding edge portion 221, a lower stepped portion 222, and a lower protruding shaft 223.

（胴部230）
胴部230は、上側フランジ部210と下側フランジ部220との間に位置し、全体が円筒形に形成されている。
胴部230には、図４に示す第１の実施の形態に係る胴部70と同様に、所定の間隔で軸方向に離れ、環状に張り出した計２個の第１環状凸部231及び第２環状凸部232を形成している。 (Torso 230)
The trunk portion 230 is located between the upper flange portion 210 and the lower flange portion 220, and is entirely formed in a cylindrical shape.
In the body 230, similar to the body 70 according to the first embodiment shown in FIG. 4, a total of two first annular protrusions 231 and a plurality of first annular protrusions 231 that are axially spaced apart at a predetermined interval and project in an annular shape. Two annular convex portions 232 are formed.

また、２個の環状凸部231,232及び上下のフランジ部210,220の間には、環状に凹んだ計３個の第１環状溝233、第２環状溝234及び第３環状溝235を形成している。
なお、環状凸部231,232を、２個形成したが、これに限定されず、１個、或いは３個以上形成してもよい。また、環状溝233〜235を、３個形成したが、これに限定されず、１個、２個、或いは４個以上形成してもよい。 A total of three first annular grooves 233, second annular grooves 234, and third annular grooves 235 that are annularly recessed are formed between the two annular convex portions 231 and 232 and the upper and lower flange portions 210 and 220. .
Although two annular convex portions 231 and 232 are formed, the present invention is not limited to this, and one or three or more may be formed. Further, although three annular grooves 233 to 235 are formed, the present invention is not limited to this, and one, two, or four or more may be formed.

（棒状部材200の成形方法）
つぎに、棒状部材200の成形方法について説明する。
図４に示す第１の実施の形態に係る筒状部材20においては、図５〜図７に示すように、ピン部材50を使用して、筒状部材20を下側金型40に支持した。これに対し、棒状部材200の場合には、図示しないが、ピン部材を筒状に形成し、その筒内に上側突軸213又は下側突軸223を挿入することで、金型30,40の成形面に棒状部材200を支持することでインサート成形が可能である。 (Method of forming rod-shaped member 200)
Next, a method for forming the rod-shaped member 200 will be described.
In the cylindrical member 20 according to the first embodiment shown in FIG. 4, as shown in FIGS. 5 to 7, the cylindrical member 20 is supported by the lower mold 40 using the pin member 50. . On the other hand, in the case of the rod-shaped member 200, although not shown, the pin member is formed in a cylindrical shape, and the molds 30, 40 are inserted by inserting the upper protruding shaft 213 or the lower protruding shaft 223 into the cylinder. Insert molding is possible by supporting the rod-shaped member 200 on the molding surface.

（第４の実施の形態）
図１０を用いて、本発明の第４の実施の形態について説明する。
本実施の形態の特徴は、棒状部材300を、図１０に示すように、角柱形に形成した点である。
具体的には、第１に、棒状部材300は、金属製で、全体として角柱形に形成され、柱状部材を構成している。棒状部材300は、図９に示す第３の実施の形態に係る棒状部材300が円筒形に形成されているのに対し、角柱形である点で相違する。
なお、棒状部材300を、四角柱に形成し、これに限定されず、三角形の柱形、或いは五角形の柱形に形成してもよい。 (Fourth embodiment)
A fourth embodiment of the present invention will be described with reference to FIG.
The feature of this embodiment is that the rod-shaped member 300 is formed in a prismatic shape as shown in FIG.
Specifically, first, the rod-shaped member 300 is made of metal and is formed in a prismatic shape as a whole, and constitutes a columnar member. The rod-shaped member 300 is different from the rod-shaped member 300 according to the third embodiment shown in FIG. 9 in that the rod-shaped member 300 is formed in a cylindrical shape.
The rod-shaped member 300 is formed in a quadrangular prism, and is not limited to this, and may be formed in a triangular column shape or a pentagonal column shape.

第２に、棒状部材300は、図１０に示すように、大別すると、次の各部を形成している。
なお、次の（１）及び（２）については後述する。
（１）フランジ部310
（２）胴部320 Secondly, as shown in FIG. 10, the rod-shaped member 300 roughly forms the following parts.
The following (1) and (2) will be described later.
(1) Flange 310
(2) Torso 320

（フランジ部310）
フランジ部310は、図４に示す第１の実施の形態に係るフランジ部60と同一の構造に形成され、図１０に示すように、突縁部311及び段差部312を有する。 (Flange part 310)
The flange portion 310 is formed in the same structure as the flange portion 60 according to the first embodiment shown in FIG. 4, and has a protruding edge portion 311 and a step portion 312 as shown in FIG.

突縁部311には、図１０に示すように、当該突縁部311より外周が小さく、軸方向に角柱形に突出した突軸313を形成している。突軸313は、図９に示す第３の実施の形態に係る上側突軸213に相当する。
なお、突軸313を、角柱形を例示したが、これに限定されず、図９に示す第３の実施の形態に係る上側突軸213と同様に、円柱形に形成してもよい。 As shown in FIG. 10, the projecting edge 311 is formed with a projecting shaft 313 having a smaller outer periphery than the projecting edge 311 and projecting in a prismatic shape in the axial direction. The projecting shaft 313 corresponds to the upper projecting shaft 213 according to the third embodiment shown in FIG.
Although the projecting shaft 313 is exemplified as a prismatic shape, the present invention is not limited to this, and the projecting shaft 313 may be formed in a cylindrical shape similarly to the upper projecting shaft 213 according to the third embodiment shown in FIG.

（胴部320）
胴部320は、図１０に示すように、フランジ部310から角柱形に垂下するものである。
胴部70は、図４に示すように、次の各部を有する。
（１）底部321
底部321は、図４に示す第１の実施の形態に係る底部71と同様に、図１０に示すように、胴部321の外周から上方に斜面を向けた断面台形形に張り出している。 (Torso 320)
As shown in FIG. 10, the trunk portion 320 hangs down from the flange portion 310 in a prismatic shape.
The trunk | drum 70 has the following each part, as shown in FIG.
(1) Bottom 321
Similar to the bottom portion 71 according to the first embodiment shown in FIG. 4, the bottom portion 321 projects in a trapezoidal cross section with an inclined surface facing upward from the outer periphery of the body portion 321 as shown in FIG. 10.

（２）第１、第２環状凸部322,323
第１、第２環状凸部322,323は、図４に示す第１の実施の形態に係る環状凸部72,73と同様に、図１０に示すように、所定の間隔で軸方向に離れ、断面が角柱形に張り出したものである。
なお、環状凸部322,323を、２個形成したが、これに限定されず、１個、或いは３個以上形成してもよい。 (2) First and second annular projections 322,323
As shown in FIG. 10, the first and second annular convex portions 322 and 323 are separated from each other in the axial direction at a predetermined interval, as in the case of the annular convex portions 72 and 73 according to the first embodiment shown in FIG. Projecting into a prismatic shape.
Although two annular convex portions 322 and 323 are formed, the present invention is not limited to this, and one or three or more may be formed.

また、第１環状凸部322とフランジ部310との間には、胴部320の外周から断面が四角いリング状に凹んだ第１環状溝324を形成している。第１環状凸部322と第２環状凸部323との間には、第１環状溝324と同様に、断面が四角のリング状に凹んだ第２環状溝325を形成している。
第２環状溝325の下面と底部321の斜面との間には、胴部320の外周から断面が四角のリング状に凹んだくぼみ部326を形成している。くぼみ部326は、図示しないが、第１環状溝322及び第２環状溝323と同様に、成形時に樹脂が充填されることで、棒状部材300の軸方向の抜けを阻止する。 Further, a first annular groove 324 is formed between the first annular convex portion 322 and the flange portion 310. The first annular groove 324 is recessed from the outer periphery of the body portion 320 into a square ring shape. Similar to the first annular groove 324, a second annular groove 325 having a concave section in a square ring shape is formed between the first annular protrusion 322 and the second annular protrusion 323.
Between the lower surface of the second annular groove 325 and the slope of the bottom portion 321, a hollow portion 326 is formed that is recessed from the outer periphery of the body portion 320 into a ring shape having a square cross section. Although not shown, the recessed portion 326 prevents the rod-shaped member 300 from coming off in the axial direction by being filled with resin at the time of molding, like the first annular groove 322 and the second annular groove 323.

（棒状部材300の成形方法）
つぎに、棒状部材300の成形方法について説明する。
棒状部材300は、図９に示す第３の実施の形態に係る棒状部材300と同様に、図示しないが、筒状に形成したピン部材の筒内に突軸313を挿入することで、金型30,40の成形面に棒状部材300を支持することでインサート成形が可能である。 (Method for forming rod-shaped member 300)
Next, a method for forming the rod-shaped member 300 will be described.
Although the rod-shaped member 300 is not shown in the figure, similarly to the rod-shaped member 300 according to the third embodiment shown in FIG. 9, a mold is obtained by inserting a projecting shaft 313 into a cylindrical pin member cylinder. Insert molding is possible by supporting the rod-shaped member 300 on the 30, 40 molding surfaces.

（柱状部材の全体説明）
本実施例において、「柱状部材」は、大別すると、次のものが含まれる。
なお、次の（１）及び（２）については後述する。
（１）筒状部材20,100
（２）棒状部材200,300 (Overall description of columnar members)
In the present embodiment, the “columnar member” can be broadly classified as follows.
The following (1) and (2) will be described later.
(1) Cylindrical member 20,100
(2) Rod-shaped member 200,300

（筒状部材20,100）
「柱状部材」には、図４に示す第１の実施の形態に係る筒状部材20と、図８に示す第２の実施の形態に係る筒状部材100とが含まれる。
第１の実施の形態に係る筒状部材20は、図４に示すように、そのねじ孔部21を、一端部を塞いだ袋穴としたものである。 (Cylindrical member 20,100)
The “columnar member” includes the cylindrical member 20 according to the first embodiment shown in FIG. 4 and the cylindrical member 100 according to the second embodiment shown in FIG.
As shown in FIG. 4, the tubular member 20 according to the first embodiment has a screw hole portion 21 formed as a bag hole with one end portion closed.

第２の実施の形態に係る筒状部材100は、図８に示すように、ねじ孔部101の貫通穴としたものである。
なお、筒状部材20,100において、ねじ孔部21,101を形成したが、これに限定されず、図示しないが、ねじ溝を省き、単なる穴状としてもよい。また、筒状部材20,100を、円筒形に形成したが、これに限定されず、図示しないが、多角形の角筒形としてもよいし、又、外周を円形に形成したが、これに限定されず、図示しないが、外周を楕円形や長円形に形成してもよい。 As shown in FIG. 8, the cylindrical member 100 according to the second embodiment is a through hole of the screw hole portion 101.
In addition, although the screw hole portions 21 and 101 are formed in the cylindrical members 20 and 100, the present invention is not limited to this, and although not illustrated, the screw groove may be omitted and a simple hole shape may be used. Although the cylindrical members 20 and 100 are formed in a cylindrical shape, the shape is not limited to this, and although not shown, a polygonal rectangular tube shape may be used, and the outer periphery is formed in a circular shape, but the present invention is not limited thereto. However, although not shown, the outer periphery may be formed in an elliptical shape or an oval shape.

（棒状部材200,300）
「柱状部材」には、図９に示す第３の実施の形態に係る棒状部材200と、図１０に示す第４の実施の形態に係る棒状部材300とが含まれる。
第３の実施の形態に係る棒状部材200は、図９に示すように、円柱形に形成したものである。第４の実施の形態に係る棒状部材300は、図１０に示すように、角柱形に形成したものである。
なお、棒状部材200を、円柱形に形成し、外周を円形としたが、これに限定されず、図示しないが、外周を楕円形や長円形に形成してもよい。また、棒状部材300を、四角柱形に形成したが、これに限定されず、図示しないが、四角柱形以外の多角形に形成してもよい。 (Bar-shaped member 200,300)
The “columnar member” includes the rod-like member 200 according to the third embodiment shown in FIG. 9 and the rod-like member 300 according to the fourth embodiment shown in FIG.
The rod-shaped member 200 according to the third embodiment is formed in a cylindrical shape as shown in FIG. The rod-shaped member 300 according to the fourth embodiment is formed in a prismatic shape as shown in FIG.
In addition, although the rod-shaped member 200 is formed in a cylindrical shape and the outer periphery is circular, the outer periphery may be formed in an elliptical shape or an oval shape, although not limited thereto. Further, although the rod-shaped member 300 is formed in a quadrangular prism shape, it is not limited to this, and although not shown, it may be formed in a polygon other than the quadrangular prism shape.

＜第１の実施の形態＞
10 成形品 11 端面
20 筒状部材（柱状部材） 21 ねじ孔部
30 上側金型 31 キャビティ
40 下側金型 41 樹脂押し切り部
42 環状溝 50 ピン部材
60 フランジ部
61 突縁部 62 段差部
70 胴部
71 底部 72 第１環状凸部
73 第２環状凸部 74 第１環状溝
75 第２環状溝 76 くぼみ部
ＰＬ パーティングライン
＜第２の実施の形態＞
100 筒状部材 101 ねじ孔部
110 上側フランジ部
111 上側突縁部 112 上側段差部
120 下側フランジ部
121 下側突縁部 122 下側段差部
130 胴部 131 第１環状凸部
132 第２環状凸部 133 第３環状凸部
134 第１環状溝 135 第２環状溝
136 第３環状溝 137 第４環状溝
＜第３の実施の形態＞
200 棒状部材
210 上側フランジ部 211 上側突縁部
212 上側段差部 213 上側突軸
220 下側フランジ部 221 下側突縁部
222 下側段差部 223 下側突軸
230 胴部 231 第１環状凸部
232 第２環状凸部 233 第１環状溝
234 第２環状溝 235 第３環状溝
＜第４の実施の形態＞
300 棒状部材
310 フランジ部 311 突縁部
312 段差部 313 突軸
320 胴部
321 底部 322 第１環状凸部
323 第２環状凸部 324 第１環状溝
325 第２環状溝 326 くぼみ部 <First Embodiment>
10 Molded product 11 End face
20 Cylindrical member (columnar member) 21 Screw hole
30 Upper mold 31 Cavity
40 Lower mold 41 Resin push-off part
42 annular groove 50 pin member
60 Flange
61 Projection part 62 Step part
70 Torso
71 Bottom 72 First annular projection
73 Second annular projection 74 First annular groove
75 Second annular groove 76 Recessed part PL Parting line <Second embodiment>
100 Cylindrical member 101 Screw hole
110 Upper flange
111 Upper protrusion 112 Upper step
120 Lower flange
121 Lower protrusion 122 Lower step
130 trunk 131 first annular projection
132 2nd annular projection 133 3rd annular projection
134 First annular groove 135 Second annular groove
136 Third annular groove 137 Fourth annular groove <Third embodiment>
200 Bar-shaped member
210 Upper flange 211 Upper protrusion
212 Upper step 213 Upper protrusion
220 Lower flange 221 Lower protrusion
222 Lower step 223 Lower protrusion
230 trunk 231 first annular projection
232 Second annular projection 233 First annular groove
234 Second annular groove 235 Third annular groove <Fourth embodiment>
300 Bar-shaped member
310 Flange 311 Projection
312 Step 313 Projection shaft
320 torso
321 Bottom 322 First annular convex part
323 Second annular protrusion 324 First annular groove
325 Second annular groove 326 Recess

Claims (6)

金型の成形面に柱状部材を支持した状態で型閉じし、前記金型内に樹脂を射出、充填することにより前記柱状部材がインサート成形された成形品において、
前記柱状部材には、
当該柱状部材の少なくとも一端部から軸方向の外向きに突出する突縁部を備え、
前記突縁部の外周は、
前記柱状部材の外周より細く形成し、
前記一端部には、
前記突縁部の外周と前記柱状部材の外周との間に位置し、前記突縁部の端面に対して低くなり、金型と接触する段差部を形成した、
ことを特徴とするインサート成形品。 In a molded product in which the columnar member is insert-molded by closing the mold while supporting the columnar member on the molding surface of the mold, and injecting and filling the resin into the mold,
In the columnar member,
A protrusion that protrudes outward in the axial direction from at least one end of the columnar member;
The outer periphery of the protruding edge is
Forming thinner than the outer periphery of the columnar member,
In the one end,
Located between the outer periphery of the projecting edge and the outer periphery of the columnar member, a stepped portion that is lower than the end surface of the projecting edge and is in contact with the mold is formed.
An insert molded product characterized by that. 前記柱状部材の前記一端部には、
当該柱状部材の外周から半径方向に外向きに張り出し、前記突縁部との間に前記段差部を有するフランジ部を備えている、
ことを特徴とする請求項１に記載のインサート成形品。 In the one end of the columnar member,
Projecting outward in the radial direction from the outer periphery of the columnar member, and having a flange portion having the stepped portion between the protruding edge portion,
The insert-molded product according to claim 1, wherein: 前記柱状部材の外周には、
当該柱状部材の高さの途中に位置する凹凸部を形成している、
ことを特徴とする請求項１又は請求項２に記載のインサート成形品。 On the outer periphery of the columnar member,
Forming an uneven portion located in the middle of the height of the columnar member,
The insert-molded product according to claim 1 or 2, wherein the product is an insert-molded product. 前記段差部は、
前記成形品の端面より高く形成されている、
ことを特徴とする請求項１〜３のいずれか１項に記載のインサート成形品。 The step portion is
Formed higher than the end face of the molded article,
The insert-molded product according to any one of claims 1 to 3, wherein the product is an insert-molded product. 請求項１〜請求項４のいずれか１項に記載のインサート成形品の成形方法であって、
前記金型には、
前記柱状部材の前記段差部に接触し、前記突縁部に向かって進行する樹脂を押し切る樹脂押し切り部を形成している、
ことを特徴とする成形品のインサート成形品の成形方法。 A method for molding an insert molded product according to any one of claims 1 to 4,
In the mold,
Forming a resin push-cut portion that contacts the stepped portion of the columnar member and pushes off the resin traveling toward the protruding edge portion,
A method for forming an insert-molded product of a molded product, characterized in that 請求項５に記載のインサート成形品の成形方法であって、
前記金型には、
前記柱状部材の前記突縁部がはまり込む環状溝を形成し、
前記環状溝の底部を、
前記突縁部の端面と離れて位置させる、
ことを特徴とするインサート成形品の成形方法。 A method for molding an insert-molded product according to claim 5,
In the mold,
Forming an annular groove into which the protruding portion of the columnar member fits;
The bottom of the annular groove,
Positioned away from the end face of the protruding edge,
A method for forming an insert-molded product.
JP2018072112A 2018-04-04 2018-04-04 Insert molded product and its molding method Active JP6892409B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018072112A JP6892409B2 (en) 2018-04-04 2018-04-04 Insert molded product and its molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018072112A JP6892409B2 (en) 2018-04-04 2018-04-04 Insert molded product and its molding method

Publications (2)

Publication Number Publication Date
JP2019181725A true JP2019181725A (en) 2019-10-24
JP6892409B2 JP6892409B2 (en) 2021-06-23

Family

ID=68338878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018072112A Active JP6892409B2 (en) 2018-04-04 2018-04-04 Insert molded product and its molding method

Country Status (1)

Country Link
JP (1) JP6892409B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020020426A (en) * 2018-08-02 2020-02-06 内山工業株式会社 Resin molding and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020020426A (en) * 2018-08-02 2020-02-06 内山工業株式会社 Resin molding and manufacturing method thereof
JP7144836B2 (en) 2018-08-02 2022-09-30 内山工業株式会社 Resin molded product and its manufacturing method

Also Published As

Publication number Publication date
JP6892409B2 (en) 2021-06-23

Similar Documents

Publication Publication Date Title
US20060188602A1 (en) Collapsible core assembly for a molding apparatus
US5874116A (en) Injection molding apparatus having a divided degassing pin
EP3736029B1 (en) Splicing structure
US7251865B2 (en) Button
US3397531A (en) Bearing means for arbor of a watch runner
JP2019181725A (en) Insert molded article and method for molding the same
US7114547B2 (en) Casting ring
JPH03502791A (en) Security closures for containers and injection molding tools for making security closures
US20070098831A1 (en) Mold for injection molding
KR101105500B1 (en) Gas discharge vent for casting mold
KR101761362B1 (en) Elastic mold for molding lipstick
JP4732733B2 (en) Coaxial 2-component cartridge
TWI604143B (en) Damper and method for manufacturing the same
KR20110055147A (en) Built-up type toy blocks assembled themselves by magnetic force
JP2744373B2 (en) Method of forming legs in chair
JP6530190B2 (en) Double cylinder
JP2001254832A (en) Rubber packing for pipe coupling and pipe coupling using the same
CN211842785U (en) A mould for making carbon fiber flange
US20240123493A1 (en) Vertically divided feeder for use in metal casting in casting molds and method for production thereof
JP7477935B1 (en) Cap, cap manufacturing apparatus, and cap manufacturing method
JP2016147472A (en) Method of manufacturing case, and metal mold device
JP6295216B2 (en) Injection molding device and connected molded product
JPS6047089B2 (en) Hollow container male screw configuration method
US20010014379A1 (en) Mold for making a plastic product and a method for making a plastic product by using the mold
KR200374878Y1 (en) a bowling pin

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200325

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20200911

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20210225

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210309

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210419

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20210518

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20210527

R150 Certificate of patent or registration of utility model

Ref document number: 6892409

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250