JP2014114850A

JP2014114850A - Hole plug

Info

Publication number: JP2014114850A
Application number: JP2012268188A
Authority: JP
Inventors: Kensuke Fujiwara; 健介藤原; Isao Saotome; 功五月女; Shunsuke Takii; 俊介滝井
Original assignee: Nifco Inc; Toyota Motor Corp; Toyota Motor East Japan Inc
Current assignee: Nifco Inc; Toyota Motor Corp; Toyota Motor East Japan Inc
Priority date: 2012-12-07
Filing date: 2012-12-07
Publication date: 2014-06-26
Anticipated expiration: 2032-12-07
Also published as: WO2014088100A1; CN104838185A; JP5911790B2

Abstract

PROBLEM TO BE SOLVED: To provide a hole plug capable of securing blockage of a through hole and reducing a projecting amount of a cover portion from a mounted member in a state of blocking the through hole.SOLUTION: At least a first groove portion 54 is circularly formed on a surface 20C of a cover portion 20 of a hole plug 10. The first groove portion 54 is formed into the circular shape having a diameter smaller than a through hole at an outer peripheral side of a connecting portion of the cover portion 20 and a body portion 24 extended from a back surface of the cover portion 20. Thus the cover portion 20 is pressed to an inserting direction to the through hole, a central portion 20A of the cover portion 20 is pressed into the through hole at the first groove portion 54 as a base point when the cover portion 20 is deflected, and elastically deformed to a reverse warp position. As a result, a projecting amount of the cover portion 20 of the hole plug 10 from a body panel 12 can be reduced, and a first claw portion 32 and a second claw portion 36 formed at an outer peripheral side of the body portion 24 can be surely engaged with a peripheral edge of the through hole of the body panel 12.

Description

本発明は、被取付部材に穿設された貫通孔を覆い隠すホールプラグに関するものである。 The present invention relates to a hole plug that covers a through hole formed in a member to be attached.

従来、ホールプラグとしては、例えば、特許文献１がある。この従来技術では、ホールプラグが被取付部材に穿設された貫通孔に嵌合される取付部と、この取付部に一体的とされており貫通孔を塞ぐ蓋部と、を備えている。 Conventionally, as a hole plug, there exists patent document 1, for example. In this prior art, a hole plug is provided with an attachment portion that fits into a through hole formed in a member to be attached, and a lid portion that is integrated with the attachment portion and closes the through hole.

特許第４７４０１２４号Patent No. 4740124

しかしながら、特許文献１のホールプラグでは、貫通孔の閉塞性を確保するために、蓋部の周縁部位又は周縁部位近傍に、蓋部に外力を加えても周縁部位の大きさ形状を維持することのできる形状維持手段が設けられている。さらに、形状維持手段と取付部に一体的とされた中央部位との間には外力が加わったとき弾性座屈変形可能な弾発力付与手段が設けられており、この弾発力付与手段によって蓋部の周縁部位を貫通孔の周縁部位に密着接触させている。このため、貫通孔の閉塞性を確保するために蓋部に形成した形状維持手段と弾発力付与手段とによって、貫通孔を塞いだ状態で、被取付部材からのホールプラグの蓋部の突出量が大きくなる。 However, in the hole plug of Patent Document 1, in order to ensure the blocking property of the through-hole, the size and shape of the peripheral part are maintained even if an external force is applied to the peripheral part of the cover part or in the vicinity of the peripheral part. A shape maintaining means is provided. Furthermore, an elastic force applying means capable of elastic buckling deformation when an external force is applied is provided between the shape maintaining means and the central portion integrated with the mounting portion. The peripheral part of the lid is brought into close contact with the peripheral part of the through hole. Therefore, the projection of the lid portion of the hole plug from the mounted member in a state where the through hole is blocked by the shape maintaining means and the elastic force imparting means formed on the lid portion in order to ensure the blocking property of the through hole. The amount increases.

本発明は上記事実を考慮し、貫通孔の閉塞性を確保でき、且つ貫通孔を塞いだ状態で、被取付部材からの蓋部の突出量を小さくできるホールプラグを得ることを課題とする。 In view of the above facts, an object of the present invention is to obtain a hole plug that can secure the closing property of the through hole and can reduce the protruding amount of the lid portion from the attached member while the through hole is closed.

請求項１に記載の本発明のホールプラグは、被取付部材に穿設された貫通孔を覆う蓋部と、前記蓋部の裏面から延出され、前記貫通孔に挿入される胴部と、前記胴部の外周側に形成され、前記貫通孔の周縁部に係合する係合爪と、前記蓋部の表面における少なくとも、前記胴部と前記蓋部との接続部の外周側で且つ前記貫通孔より小径となる円形に形成され、前記蓋部が撓む際の基点となる第１溝部と、を有する。 The hole plug of the present invention according to claim 1 is a lid portion that covers a through hole formed in a member to be attached, a trunk portion that extends from the back surface of the lid portion and is inserted into the through hole, An engaging claw that is formed on the outer peripheral side of the body part and engages with a peripheral part of the through hole; and at least an outer peripheral side of a connection part between the body part and the lid part on the surface of the lid part; and And a first groove portion that is formed in a circular shape having a smaller diameter than the through hole and serves as a base point when the lid portion is bent.

請求項１に記載の本発明では、ホールプラグの蓋部の裏面から延出された胴部が、被取付部材に穿設された貫通孔に挿入され、ホールプラグの蓋部が、被取付部材に穿設された貫通孔を覆う。また、蓋部の表面における少なくとも、胴部と蓋部との接続部の外周側で且つ貫通孔より小径となる円形に第１溝部が形成されており、蓋部が貫通孔への挿入方向へ押圧され撓む際に、第１溝部が基点となって、蓋部の中央部が貫通孔に押し込まれる位置まで弾性変形し、胴部の外周側に形成された係合爪が貫通孔の周縁部に確実に係合する。また、蓋部が元の形状方向へ戻ろうとする際には、第１溝部により、蓋部が貫通孔の周縁部の凹凸に追従することで貫通孔の閉塞性を確保できる。また、蓋部に形状維持手段と弾発力付与手段とを形成する構成に比べて、貫通孔を塞いだ状態で、被取付部材からのホールプラグの蓋部の突出量を小さくできる。 In the first aspect of the present invention, the body portion extending from the back surface of the hole plug lid portion is inserted into a through-hole formed in the attachment member, and the hole plug lid portion is attached to the attachment member. The through-hole drilled in is covered. Moreover, the 1st groove part is formed in the circle | round | yen which becomes a diameter smaller than a through-hole at least in the outer peripheral side of the connection part of a trunk | drum and a cover part in the surface of a cover part, and a cover part is the insertion direction to a through-hole. When pressed and bent, the first groove is the base point and elastically deforms to a position where the center of the lid is pushed into the through-hole, and the engaging claw formed on the outer peripheral side of the body is the periphery of the through-hole. Engage the part securely. In addition, when the lid portion is about to return to the original shape direction, the first groove portion allows the lid portion to follow the unevenness of the peripheral portion of the through hole, thereby securing the through hole closing property. Further, as compared with the configuration in which the shape maintaining means and the elastic force imparting means are formed on the lid portion, the projection amount of the lid portion of the hole plug from the attached member can be reduced while the through hole is closed.

請求項２記載の本発明は請求項１に記載のホールプラグにおいて、前記第１溝部の外周側で且つ、前記取付孔より大径となる円形に形成された第２溝部を有する。 According to a second aspect of the present invention, in the hole plug according to the first aspect of the present invention, the hole plug has a second groove portion formed in a circular shape having a larger diameter than the mounting hole on the outer peripheral side of the first groove portion.

請求項２記載の本発明では、蓋部が撓む際に、第１溝部と、第１溝部の外周側で且つ、貫通孔より大径となる円形に形成された第２溝部とが基点となって、蓋部が弾性変形するため、係合爪が貫通孔の周縁部にさらに確実に係合する。また、蓋部が元の形状方向へ戻ろうとする際には、第１溝部と第２溝部とにより、蓋部が貫通孔の周縁部の凹凸に追従することで貫通孔の閉塞性がさらに向上する。 In the present invention described in claim 2, when the lid portion is bent, the first groove portion and the second groove portion formed in a circular shape having a larger diameter than the through hole on the outer peripheral side of the first groove portion are the base points. Thus, since the lid portion is elastically deformed, the engaging claw is more reliably engaged with the peripheral portion of the through hole. Further, when the lid portion is to return to the original shape direction, the first groove portion and the second groove portion allow the lid portion to follow the unevenness of the peripheral portion of the through hole, thereby further improving the closing property of the through hole. To do.

請求項３記載の本発明は請求項２に記載のホールプラグにおいて、前記蓋部に放射状に形成され、前記第１溝部と前記第２溝部とを結ぶ第３溝部を有する。 According to a third aspect of the present invention, in the hole plug according to the second aspect of the present invention, the hole plug includes a third groove portion that is radially formed on the lid portion and connects the first groove portion and the second groove portion.

請求項３記載の本発明では、蓋部が撓む際に、第１溝部と第２溝部に加えて、蓋部に放射状に形成され、第１溝部と第２溝部とを結ぶ第３溝部が基点となって、蓋部が弾性変形するため、係合爪が貫通孔の周縁部にさらに確実に係合する。また、蓋部が元の形状方向へ戻ろうとする際には、第１溝部、第２溝部、第３溝部により、蓋部が貫通孔の周縁部の凹凸に追従することで貫通孔の閉塞性がさらに向上する。 According to the third aspect of the present invention, when the lid portion is bent, in addition to the first groove portion and the second groove portion, the lid portion is radially formed, and the third groove portion connecting the first groove portion and the second groove portion is provided. Since the lid portion is elastically deformed at the base point, the engaging claw is more reliably engaged with the peripheral portion of the through hole. Further, when the lid portion is to return to the original shape direction, the first groove portion, the second groove portion, and the third groove portion cause the lid portion to follow the unevenness of the peripheral portion of the through hole, thereby closing the through hole. Is further improved.

請求項４記載の本発明は請求項１〜３の何れか１項に記載のホールプラグにおいて、前記胴部は、前記胴部の中心軸を挟んで前記蓋部の裏面から平行に延設された一対の平面状壁部と、前記一対の平面状壁部の先端部に連結された環状の先端部と、を有し、前記係合爪は、前記一対の平面状壁部と離間して設けられ、前記先端部の外周部にヒンジ部で前記一対の平面状壁部の方向へ弾性変形可能に連結された一対の第１爪部と、前記一対の平面状壁部の間に形成され前記先端部の外周部にヒンジ部で前記胴部の中心軸方向へ弾性変形可能に連結された一対の第２爪部と、からなる。 According to a fourth aspect of the present invention, in the hole plug according to any one of the first to third aspects, the body portion extends in parallel from the back surface of the lid portion across the central axis of the body portion. A pair of planar wall portions and an annular distal end portion connected to the distal end portions of the pair of planar wall portions, and the engaging claws are spaced apart from the pair of planar wall portions. Provided between a pair of first claw portions and a pair of planar wall portions, which are connected to an outer peripheral portion of the tip portion by a hinge portion so as to be elastically deformable in the direction of the pair of planar wall portions. And a pair of second claw portions connected to the outer peripheral portion of the tip portion by a hinge portion so as to be elastically deformable in the central axis direction of the trunk portion.

請求項４記載の本発明では、胴部が、胴部の中心軸を挟んで蓋部の裏面から平行に延設された一対の平面状壁部と、一対の平面状壁部の先端部に連結された環状の先端部と、を有し、係合爪が、一対の平面状壁部と離間して設けられ、先端部の外周部にヒンジ部で一対の平面状壁部の方向へ弾性変形可能に連結された一対の第１爪部と、一対の平面状壁部の間に形成され先端部の外周部にヒンジ部で胴部の中心軸方向へ弾性変形可能に連結された一対の第２爪部と、からなる。このため、成型する時の型抜きが、一対の第１爪部と一対の平面状壁部との間から金型を抜く方向と、一対の第２爪部の弾性変形方向に沿った金型の抜き方向と、が一致する。この結果、ホールプラグを成型する時の型抜きが容易になり生産性が向上する。 In the present invention described in claim 4, the barrel portion is provided at a pair of planar wall portions extending in parallel from the back surface of the lid portion with the central axis of the trunk portion interposed therebetween, and at the distal end portions of the pair of planar wall portions. And an engaging claw that is spaced apart from the pair of planar wall portions and is elastic in the direction of the pair of planar wall portions at the hinge portion on the outer peripheral portion of the distal end portion. A pair of first claw portions that are connected in a deformable manner and a pair of elastic members that are formed between a pair of planar wall portions and are elastically deformed in the direction of the central axis of the trunk portion at the outer peripheral portion of the tip portion by a hinge portion. A second claw portion. For this reason, the die cutting at the time of molding is a mold along the direction in which the mold is pulled out between the pair of first claw portions and the pair of planar wall portions, and the elastic deformation direction of the pair of second claw portions. The pulling direction matches. As a result, it is easy to remove the mold when the hole plug is molded, and the productivity is improved.

請求項１に記載の本発明のホールプラグは、上記構成としたので、貫通孔の閉塞性を確保でき、且つ貫通孔を塞いだ状態で、被取付部材からの蓋部の突出量を小さくできる。 Since the hole plug of the present invention according to claim 1 has the above-described configuration, it is possible to ensure the closing property of the through hole and to reduce the protruding amount of the lid portion from the attached member in a state where the through hole is closed. .

請求項２に記載の本発明のホールプラグは、上記構成としたので、係合爪が貫通孔の周縁部にさらに確実に係合すると共に、貫通孔の閉塞性がさらに向上する。 Since the hole plug of the present invention according to claim 2 has the above-described configuration, the engaging claw is more reliably engaged with the peripheral edge portion of the through hole, and the closing property of the through hole is further improved.

請求項３に記載の本発明のホールプラグは、上記構成としたので、係合爪が貫通孔の周縁部にさらに確実に係合すると共に、貫通孔の閉塞性がさらに向上する。 Since the hole plug according to the third aspect of the present invention has the above-described configuration, the engaging claw is more reliably engaged with the peripheral portion of the through hole, and the closing property of the through hole is further improved.

請求項４に記載の本発明のホールプラグは、上記構成としたので、成型時に型抜きが容易になり、生産性が向上する。 Since the hole plug according to the fourth aspect of the present invention has the above-described configuration, it is easy to remove the mold at the time of molding, and the productivity is improved.

本発明の一実施形態に係るホールプラグを示す蓋部側から見た斜視図である。It is the perspective view seen from the cover part side which shows the hole plug which concerns on one Embodiment of this invention. 本発明の一実施形態に係るホールプラグを示す胴部側から見た斜視図である。It is the perspective view seen from the trunk | drum side which shows the hole plug which concerns on one Embodiment of this invention. 本発明の一実施形態に係るホールプラグ示す第２爪部方向から見た側面図である。It is the side view seen from the 2nd nail | claw part direction which shows the hole plug which concerns on one Embodiment of this invention. 本発明の一実施形態に係るホールプラグを示す第１爪部方向から見た側面図である。It is the side view seen from the 1st nail | claw part direction which shows the hole plug which concerns on one Embodiment of this invention. 本発明の一実施形態に係るホールプラグを示す胴部側から見た平面図である。It is the top view seen from the trunk | drum side which shows the hole plug which concerns on one Embodiment of this invention. 本発明の一実施形態に係るホールプラグの貫通孔への挿入前の状態を示す図５の６−６断面線に沿った拡大側断面図である。FIG. 6 is an enlarged side cross-sectional view taken along the line 6-6 in FIG. 5 showing a state before the hole plug according to the embodiment of the present invention is inserted into the through hole. 本発明の一実施形態に係るホールプラグの蓋部に押圧力が作用した状態を示す図６に対応する断面図である。It is sectional drawing corresponding to FIG. 6 which shows the state which the pressing force acted on the cover part of the hole plug which concerns on one Embodiment of this invention. 本発明の一実施形態に係るホールプラグの貫通孔に取付けた状態を示す図６に対応する断面図である。It is sectional drawing corresponding to FIG. 6 which shows the state attached to the through-hole of the hole plug which concerns on one Embodiment of this invention. 本発明の他の実施形態に係るホールプラグを示す蓋部側から見た平面図である。It is the top view seen from the cover part side which shows the hole plug which concerns on other embodiment of this invention.

（実施形態）
次に、本発明のホールプラグの一実施形態を図１〜図８に従って説明する。
なお、図中、同一又は対応する機能を有する部材（構成要素）には同じ符号を付して適宜説明を省略する。 (Embodiment)
Next, an embodiment of the hole plug of the present invention will be described with reference to FIGS.
In the drawings, members (components) having the same or corresponding functions are denoted by the same reference numerals and description thereof is omitted as appropriate.

図６に示すように、本実施形態のホールプラグ１０は一例として合成樹脂で成形されており、被取付部材の一例としての自動車のボディパネル１２に穿設された貫通孔１４を閉塞できるようになっている。また、ボディパネル１２の表面１２Ａには塗装１２Ｂが施されており、塗装１２Ｂは、貫通孔１４の内周面とボディパネル１２の裏面１２Ｃにおける貫通孔１４の周縁部にも施されている。 As shown in FIG. 6, the hole plug 10 of this embodiment is formed of synthetic resin as an example so that a through hole 14 formed in a body panel 12 of an automobile as an example of a member to be attached can be closed. It has become. The surface 12A of the body panel 12 is coated with a coating 12B, and the coating 12B is also applied to the inner peripheral surface of the through hole 14 and the peripheral portion of the through hole 14 on the back surface 12C of the body panel 12.

図１に示すように、ホールプラグ１０は、貫通孔１４（図６参照）を覆う円形の蓋部２０を備えている。 As shown in FIG. 1, the hole plug 10 includes a circular lid portion 20 that covers the through hole 14 (see FIG. 6).

図３に示すように、蓋部２０の表面２０Ｃの中央部２０Ａは平板状となっている。また、蓋部２０の外周部（フランジ部）２０Ｂは、内周側から外周側へ向かって、蓋部２０の表面２０Ｃ側から裏面２０Ｄ側に向かって傾斜した傾斜面となっている。なお、蓋部２０の表面２０Ｃは、ホールプラグ１０を貫通孔１４に挿入する際に押圧する押圧面となっている。 As shown in FIG. 3, the central portion 20A of the surface 20C of the lid portion 20 has a flat plate shape. Moreover, the outer peripheral part (flange part) 20B of the cover part 20 becomes an inclined surface inclined toward the back surface 20D side from the surface 20C side of the cover part 20 toward the outer peripheral side from the inner peripheral side. The surface 20C of the lid 20 is a pressing surface that is pressed when the hole plug 10 is inserted into the through hole 14.

図２に示すように、ホールプラグ１０の蓋部２０の裏面２０Ｄにおける中央部には座部２０Ｅが形成されており、この座部２０Ｅから貫通孔１４（図６参照）に挿入される胴部２４が延出されている。また、胴部２４は、胴部２４の中心軸２４Ａを挟んで、蓋部２０の座部２０Ｅから中心軸２４Ａに沿って平行に立設された一対の平面状壁部２６と、これらの一対の平面状壁部２６の先端が連結された環状の先端部２８と、を有している。なお、一対の平面状壁部２６における長手方向（蓋部２０の裏面２０Ｄに沿った方向）の両端部２６Ａは、互いに接近する方向へ向かって円弧状に延設されている。 As shown in FIG. 2, a seat portion 20E is formed at the center portion of the back surface 20D of the lid portion 20 of the hole plug 10, and the trunk portion inserted into the through hole 14 (see FIG. 6) from the seat portion 20E. 24 is extended. Further, the body portion 24 includes a pair of planar wall portions 26 erected in parallel from the seat portion 20E of the lid portion 20 along the center axis 24A across the center axis 24A of the body portion 24, and a pair of these. And an annular front end portion 28 to which the front end of the planar wall portion 26 is connected. Note that both end portions 26A of the pair of planar wall portions 26 in the longitudinal direction (the direction along the back surface 20D of the lid portion 20) extend in an arc shape in a direction approaching each other.

胴部２４の先端部２８の外周部には対向する位置に配置された係合爪としての一対の第１爪部３２が、ヒンジ部３４によって連結されている。また、先端部２８の外周部における第１爪部３２から周方向に沿って９０度離間した位置には、係合爪としての一対の第２爪部３６がヒンジ部３８によって連結されている。なお、第２爪部３６の幅方向中央部には肉抜き部３７が形成されている。 A pair of first claw portions 32 as engaging claws disposed at opposing positions are connected to the outer peripheral portion of the distal end portion 28 of the trunk portion 24 by a hinge portion 34. In addition, a pair of second claw portions 36 as engagement claws are connected by a hinge portion 38 at a position 90 degrees apart from the first claw portion 32 in the circumferential direction on the outer peripheral portion of the distal end portion 28. A thinned portion 37 is formed at the center in the width direction of the second claw portion 36.

図３に示すように、一対の第１爪部３２は一対の平面状壁部２６と離間して設けられており、第１爪部３２と平面状壁部２６との間には隙間が形成されている。従って、第１爪部３２はヒンジ部３４によって、図３に示す通常位置から、平面状壁部２６に接近する方向（図３の矢印Ａ方向）へ弾性変形可能となっている。 As shown in FIG. 3, the pair of first claw portions 32 are provided apart from the pair of planar wall portions 26, and a gap is formed between the first claw portion 32 and the planar wall portion 26. Has been. Therefore, the first claw portion 32 can be elastically deformed by the hinge portion 34 from the normal position shown in FIG. 3 in the direction approaching the planar wall portion 26 (the direction of arrow A in FIG. 3).

図５に示すように、一対の平面状壁部２６の長手方向中央部には、一対の平面状壁部２６を互い連結する中央壁部３０が形成されている。また、胴部２４の先端部２８における第１爪部３２のヒンジ部３４の内周側には、ヒンジ部３４に沿って矩形状の貫通孔５０が形成されている。各貫通孔５０の内周側には、一対の平面状壁部２６の外側面と先端部２８とを連結するリブ５３が形成されている。なお、図３に示すように、これらのリブ５３の側面視形状は三角形となっている。 As shown in FIG. 5, a central wall portion 30 that connects the pair of planar wall portions 26 to each other is formed at the longitudinal center portion of the pair of planar wall portions 26. In addition, a rectangular through hole 50 is formed along the hinge portion 34 on the inner peripheral side of the hinge portion 34 of the first claw portion 32 at the distal end portion 28 of the body portion 24. On the inner peripheral side of each through-hole 50, a rib 53 that connects the outer surface of the pair of planar wall portions 26 and the distal end portion 28 is formed. In addition, as shown in FIG. 3, the side view shape of these ribs 53 is a triangle.

図２に示すように、一対の第２爪部３６は一対の平面状壁部２６の両端部２６Ａの間に形成されている。従って、図４に示すように、第２爪部３６はヒンジ部３８によって、図４に示す通常位置から、一対の平面状壁部２６の間に入り、胴部２４の中心軸２４Ａ（図２参照）の方向（図４の矢印Ｂ方向）へ弾性変形可能となっている。 As shown in FIG. 2, the pair of second claw portions 36 is formed between both end portions 26 A of the pair of planar wall portions 26. Therefore, as shown in FIG. 4, the second claw portion 36 enters between the pair of planar wall portions 26 from the normal position shown in FIG. 4 by the hinge portion 38, and the central axis 24 A of the trunk portion 24 (FIG. 2). It can be elastically deformed in the direction (see FIG. 4).

図３に示すように、第１爪部３２の外周面３２Ａは、ヒンジ部３４から蓋部２０の外周側に向かって斜めに延出されている。このため、ホールプラグ１０をボディパネル１２の貫通孔１４に挿入すると、第１爪部３２の外周面３２Ａが貫通孔１４の内縁部と摺動し、ヒンジ部３４によって平面状壁部２６に接近する方向（図３の矢印Ａ方向）へ弾性変形するようになっている。そして、第１爪部３２が貫通孔１４を通過すると、ヒンジ部３４の復元力によって第１爪部３２が外側方向（図３の矢印Ａ方向と反対方向）へ移動し、第１爪部３２がボディパネル１２の裏面１２Ｃの貫通孔１４の周縁部に係合するようになっている。 As shown in FIG. 3, the outer peripheral surface 32 A of the first claw portion 32 extends obliquely from the hinge portion 34 toward the outer peripheral side of the lid portion 20. For this reason, when the hole plug 10 is inserted into the through hole 14 of the body panel 12, the outer peripheral surface 32 A of the first claw portion 32 slides with the inner edge portion of the through hole 14 and approaches the planar wall portion 26 by the hinge portion 34. It is elastically deformed in the direction (arrow A direction in FIG. 3). And if the 1st nail | claw part 32 passes the through-hole 14, the 1st nail | claw part 32 will move to an outer side direction (direction opposite to the arrow A direction of FIG. 3) with the restoring force of the hinge part 34, and the 1st nail | claw part 32 will be shown. Is engaged with the peripheral edge of the through hole 14 on the back surface 12C of the body panel 12.

図４に示すように、第２爪部３６の外周面３６Ａは、ヒンジ部３８から蓋部２０の外周側に向かって斜めに延出されている。このため、ホールプラグ１０をボディパネル１２の貫通孔１４に挿入すると、第２爪部３６の外周面３６Ａが貫通孔１４の内縁部と摺動し、ヒンジ部３８によって胴部２４の内側方向（図４の矢印Ｂ方向）へ弾性変形するようになっている。そして、第２爪部３６が貫通孔１４を通過すると、ヒンジ部３８の復元力によって第２爪部３６が外側方向（図４の矢印Ｂ方向と反対方向）へ移動し、第２爪部３６がボディパネル１２の裏面１０Ｃの貫通孔１４の周縁部に係合するようになっている。 As shown in FIG. 4, the outer peripheral surface 36 A of the second claw portion 36 extends obliquely from the hinge portion 38 toward the outer peripheral side of the lid portion 20. For this reason, when the hole plug 10 is inserted into the through hole 14 of the body panel 12, the outer peripheral surface 36 A of the second claw portion 36 slides with the inner edge portion of the through hole 14, and the hinge portion 38 moves toward the inner side ( It is elastically deformed in the direction of arrow B in FIG. And when the 2nd nail | claw part 36 passes the through-hole 14, the 2nd nail | claw part 36 will move to an outer side direction (direction opposite to the arrow B direction of FIG. 4) with the restoring force of the hinge part 38, and the 2nd nail | claw part 36 will be shown. Engages with the peripheral edge of the through hole 14 on the back surface 10C of the body panel 12.

図１に示すように、蓋部２０の表面２０Ｃの中央部には円形の凹部５２が形成されており、凹部５２の外周方向には溝部としての第１溝部５４が円形に形成されている。また、蓋部２０の表面２０Ｃにおける第１溝部５４の外周方向には、溝部としての第２溝部５６が円形に形成されている。さらに、蓋部２０の表面２０Ｃには、第１溝部５４と第２溝部５６とを結ぶ４本の溝部としての第３溝部５８が放射状に形成されている。なお、４本の第３溝部５８は蓋部２０の周方向に沿って等間隔で形成されている。また、各第３溝部５８の内側端部５８Ａは第１溝部５４より内周側に突出しており、各第３溝部５８の外側端部５８Ｂは第２溝部５６より外周側に突出し、蓋部２０の外周端に達している。 As shown in FIG. 1, a circular concave portion 52 is formed at the center of the surface 20 C of the lid portion 20, and a first groove portion 54 as a groove portion is formed in a circular shape in the outer peripheral direction of the concave portion 52. Further, in the outer circumferential direction of the first groove portion 54 on the surface 20C of the lid portion 20, a second groove portion 56 as a groove portion is formed in a circular shape. Further, on the surface 20 C of the lid portion 20, third groove portions 58 are radially formed as four groove portions connecting the first groove portion 54 and the second groove portion 56. The four third groove portions 58 are formed at equal intervals along the circumferential direction of the lid portion 20. Further, the inner end portion 58A of each third groove portion 58 protrudes to the inner peripheral side from the first groove portion 54, the outer end portion 58B of each third groove portion 58 protrudes to the outer peripheral side from the second groove portion 56, and the lid portion 20 Has reached the outer peripheral edge.

図６に示すように、第１溝部５４は、胴部２４と蓋部２０との接続部６０の外周側で、且つ、貫通孔１４より小径となる円形に形成されており、第１溝部５４の溝に沿った方向から見た形状は台形状となっている。また、第２溝部５６は第１溝部５４の外周側で且つ、貫通孔１４より大きい円形に形成されており、蓋部２０の外周端に近い位置となっている。また、第２溝部５６の溝に沿った方向から見た形状は台形状となっている。さらに、第１溝部５４の断面積に比べて第２溝部５６の断面積が小さくなっている。なお、図３に示すように、第３溝部５８の溝に沿った方向から見た形状も台形状となっている。 As shown in FIG. 6, the first groove portion 54 is formed in a circular shape having a smaller diameter than the through hole 14 on the outer peripheral side of the connection portion 60 between the trunk portion 24 and the lid portion 20, and the first groove portion 54. The shape seen from the direction along the groove is trapezoidal. Further, the second groove portion 56 is formed on the outer peripheral side of the first groove portion 54 and in a circular shape larger than the through hole 14, and is located near the outer peripheral end of the lid portion 20. Moreover, the shape seen from the direction along the groove | channel of the 2nd groove part 56 is trapezoid. Furthermore, the cross-sectional area of the second groove portion 56 is smaller than the cross-sectional area of the first groove portion 54. In addition, as shown in FIG. 3, the shape seen from the direction along the groove | channel of the 3rd groove part 58 is also trapezoid.

（作用・効果）
次に、本実施形態の作用と効果について説明する。
本実施形態では、図６に示すように、ホールプラグ１０の胴部２４をボディパネル１２の貫通孔１４に挿入する。この際、ホールプラグ１０の蓋部２０の中央部２０Ａを貫通孔１４への挿入方向（図６の矢印Ｐ方向）へ押圧する。ホールプラグ１０の胴部２４の先端部２８が貫通孔１４へ挿入されると、第２爪部３６の外周面３６Ａが貫通孔１４の内縁部と摺動し、ヒンジ部３８によって胴部２４の内側方向（図４の矢印Ｂ方向）へ弾性変形する。そして、図８に示すように、第２爪部３６が貫通孔１４を通過すると、ヒンジ部３８の復元力によって第２爪部３６が外側方向（図４の矢印Ｂ方向と反対方向）へ移動し、第２爪部３６がボディパネル１２の裏面１２Ｃの貫通孔１４の周縁部に係合する。 (Action / Effect)
Next, the operation and effect of this embodiment will be described.
In the present embodiment, as shown in FIG. 6, the body portion 24 of the hole plug 10 is inserted into the through hole 14 of the body panel 12. At this time, the center portion 20A of the lid portion 20 of the hole plug 10 is pressed in the direction of insertion into the through hole 14 (the direction of arrow P in FIG. 6). When the distal end portion 28 of the body portion 24 of the hole plug 10 is inserted into the through hole 14, the outer peripheral surface 36 A of the second claw portion 36 slides on the inner edge portion of the through hole 14, and Elastically deforms inward (in the direction of arrow B in FIG. 4). As shown in FIG. 8, when the second claw portion 36 passes through the through hole 14, the second claw portion 36 moves outward (the direction opposite to the arrow B direction in FIG. 4) by the restoring force of the hinge portion 38. And the 2nd nail | claw part 36 engages with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12. FIG.

同様に、第１爪部３２の外周面３２Ａが貫通孔１４の内縁部と摺動し、ヒンジ部３４によって平面状壁部２６に接近する方向（図３の矢印Ａ方向）へ弾性変形する。そして、第１爪部３２が貫通孔１４を通過すると、ヒンジ部３４の復元力によって第１爪部３２が外側方向（図３の矢印Ａ方向と反対方向）へ移動し、第１爪部３２がボディパネル１２の裏面１２Ｃの貫通孔１４の周縁部に係合する。 Similarly, the outer peripheral surface 32A of the first claw portion 32 slides with the inner edge portion of the through hole 14, and is elastically deformed in the direction approaching the planar wall portion 26 by the hinge portion 34 (arrow A direction in FIG. 3). And if the 1st nail | claw part 32 passes the through-hole 14, the 1st nail | claw part 32 will move to an outer side direction (direction opposite to the arrow A direction of FIG. 3) with the restoring force of the hinge part 34, and the 1st nail | claw part 32 will be shown. Engages with the peripheral edge of the through hole 14 on the back surface 12 C of the body panel 12.

この際、本実施形態のホールプラグ１０では、第１溝部５４が、蓋部２０の表面２０Ｃに、胴部２４と蓋部２０との接続部６０の外周側で、且つ貫通孔１４より小径となる円形に形成されている。このため、図７に示すように、蓋部２０が貫通孔１４への挿入方向（図７の矢印Ｐ方向）へ押圧され、蓋部２０が撓む際に、第１溝部５４が基点となって、蓋部２０における第１溝部５４より外周側の外周部（フランジ部）２０Ｂが貫通孔１４に押し込まれる位置まで弾性変形する。さらには、蓋部２０の外周部２０Ｂが逆反りする位置（図示省略）まで弾性変形する。この結果、第１爪部３２と第２爪部３６とがボディパネル１２の裏面１２Ｃの貫通孔１４の周縁部に確実に係合する。よって、塗装１２Ｂの膜厚が厚い場合や、塗装１２Ｂの膜厚の凹凸が激しい場合、さらには、ボディパネル１２の裏面１２Ｃに塗装溜まりができている場合等にも、第１爪部３２と第２爪部３６とをボディパネル１２の裏面１２Ｃの貫通孔１４の周縁部に確実に係合させることができる。 At this time, in the hole plug 10 of the present embodiment, the first groove portion 54 is formed on the surface 20C of the lid portion 20 on the outer peripheral side of the connecting portion 60 between the trunk portion 24 and the lid portion 20 and with a smaller diameter than the through hole 14. It is formed in a circular shape. For this reason, as shown in FIG. 7, when the lid portion 20 is pressed in the insertion direction into the through hole 14 (the direction indicated by the arrow P in FIG. 7) and the lid portion 20 is bent, the first groove portion 54 serves as a base point. Thus, the outer peripheral portion (flange portion) 20B on the outer peripheral side of the first groove portion 54 in the lid portion 20 is elastically deformed to a position where it is pushed into the through hole 14. Furthermore, it elastically deforms to a position (not shown) where the outer peripheral portion 20B of the lid portion 20 is reversely warped. As a result, the 1st nail | claw part 32 and the 2nd nail | claw part 36 engage reliably with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12. FIG. Therefore, when the coating 12B is thick, when the coating 12B has severe irregularities, and when there is a coating pool on the back surface 12C of the body panel 12, the first claw portion 32 and The 2nd nail | claw part 36 can be reliably engaged with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12. FIG.

そして、蓋部２０が元の形状方向へ戻ろうとする際には、第１溝部５４が基点となって、蓋部２０の外周部２０Ｂが変形することで、蓋部２０の外周部２０Ｂが不均一な塗装面に追従するため、貫通孔１４の閉塞性を確保できる。また、従来技術のように蓋部に形状維持手段と弾発力付与手段とを形成する構成に比べて、本実施形態では、図８に示すように、貫通孔１４を塞いだ状態で、ボディパネル１２からのホールプラグ１０の蓋部２０の突出量Ｈ１を小さくできる。 When the lid 20 is about to return to the original shape direction, the outer periphery 20B of the lid 20 is not deformed by the deformation of the outer periphery 20B of the lid 20 with the first groove 54 as a base point. Since it follows a uniform painted surface, the blockage of the through-hole 14 can be ensured. Compared with the configuration in which the shape maintaining means and the elastic force imparting means are formed in the lid as in the prior art, in this embodiment, the body is closed with the through hole 14 closed as shown in FIG. The protrusion amount H1 of the lid portion 20 of the hole plug 10 from the panel 12 can be reduced.

また、本実施形態のホールプラグ１０では、蓋部２０が撓む際に、第１溝部５４と第２溝部５６とが基点となって蓋部２０が弾性変形する。このため、第１爪部３２と第２爪部３６とがボディパネル１２の裏面１２Ｃの貫通孔１４の周縁部にさらに確実に係合する。また、蓋部２０が元の形状方向へ戻ろうとする際には、第１溝部５４と第２溝部５６とにより、蓋部２０が貫通孔１４の周縁部の凹凸に追従することで貫通孔の閉塞性がさらに向上する。 Moreover, in the hole plug 10 of this embodiment, when the cover part 20 bends, the cover part 20 is elastically deformed by using the first groove part 54 and the second groove part 56 as a base point. For this reason, the 1st nail | claw part 32 and the 2nd nail | claw part 36 engage with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12 more reliably. Further, when the lid portion 20 is about to return to the original shape direction, the first groove portion 54 and the second groove portion 56 cause the lid portion 20 to follow the unevenness of the peripheral portion of the through-hole 14, thereby The occlusion is further improved.

また、本実施形態のホールプラグ１０では、蓋部２０が撓む際に、第１溝部５４と第２溝部５６に加えて第３溝部５８が基点となって、蓋部２０が弾性変形する。このため、第１爪部３２と第２爪部３６とがボディパネル１２の裏面１２Ｃの貫通孔１４の周縁部にさらに確実に係合する。また、蓋部２０が元の形状方向へ戻ろうとする際には、第１溝部５４、第２溝部５６、第３溝部５８とにより、蓋部２０が貫通孔１４の周縁部の凹凸に追従することで貫通孔の閉塞性がさらに向上する。 Moreover, in the hole plug 10 of this embodiment, when the cover part 20 bends, in addition to the 1st groove part 54 and the 2nd groove part 56, the 3rd groove part 58 becomes a base point, and the cover part 20 elastically deforms. For this reason, the 1st nail | claw part 32 and the 2nd nail | claw part 36 engage with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12 more reliably. Further, when the lid portion 20 tries to return to the original shape direction, the lid portion 20 follows the unevenness of the peripheral portion of the through hole 14 by the first groove portion 54, the second groove portion 56, and the third groove portion 58. This further improves the blockage of the through hole.

また、本実施形態のホールプラグ１０では、胴部２４が、胴部２４の中心軸２４Ａを挟んで蓋部２０の裏面２０Ｄから平行に延設された一対の平面状壁部２６と、一対の平面状壁部２６の先端部に連結された環状の先端部２８と、を有している。また、第１爪部３２が、一対の平面状壁部２６と離間して設けられており、先端部２８の外周部にヒンジ部３４で一対の平面状壁部２６の方向へ弾性変形可能に連結されている。また、第２爪部３６が、一対の平面状壁部２６の間に形成されており、先端部２８の外周部にヒンジ部３８で胴部２４の中心軸２４Ａの方向へ弾性変形可能に連結されている。このため、ホールプラグ１０を成型する時の型抜きが、一対の第１爪部３２と一対の平面状壁部２６との間から金型を抜く方向（図５の矢印Ｋ１方向）と、一対の第２爪部３６の弾性変形方向に沿った金型の抜き方向（図５の矢印Ｋ２方向）と、が一致する。この結果、ホールプラグ１０を成型する時の型抜きが容易になり、ホールプラグ１０の生産性が向上する。 Further, in the hole plug 10 of the present embodiment, the body portion 24 includes a pair of planar wall portions 26 extending in parallel from the back surface 20D of the lid portion 20 with the central axis 24A of the body portion 24 interposed therebetween, and a pair of And an annular tip portion 28 connected to the tip portion of the planar wall portion 26. Further, the first claw portion 32 is provided to be separated from the pair of planar wall portions 26 and can be elastically deformed in the direction of the pair of planar wall portions 26 by the hinge portion 34 on the outer peripheral portion of the distal end portion 28. It is connected. The second claw portion 36 is formed between the pair of planar wall portions 26 and is connected to the outer peripheral portion of the distal end portion 28 so as to be elastically deformable in the direction of the central axis 24A of the trunk portion 24 by the hinge portion 38. Has been. For this reason, when the hole plug 10 is molded, die cutting is performed in the direction in which the mold is pulled out between the pair of first claw portions 32 and the pair of planar wall portions 26 (in the direction of arrow K1 in FIG. 5), The mold removal direction (in the direction of arrow K2 in FIG. 5) along the elastic deformation direction of the second claw portion 36 coincides. As a result, it is easy to remove the mold when the hole plug 10 is molded, and the productivity of the hole plug 10 is improved.

（その他の実施形態）
以上に於いては、本発明を特定の実施形態について詳細に説明したが、本発明は上記実施形態に限定されるものではなく、本発明の範囲内にて他の種々の実施形態が可能であることは当業者にとって明らかである。例えば、上記実施形態では、ホールプラグ１０の蓋部２０に第１溝部５４、第２溝部５６、４本の第３溝部５８を形成したが、これに代えて、ホールプラグ１０の蓋部２０に第１溝部５４のみを形成した構成としてもよい。また、ホールプラグ１０の蓋部２０に第１溝部５４と第２溝部５６のみを形成した構成としてもよい。 (Other embodiments)
While the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above embodiment, the first groove portion 54, the second groove portion 56, and the four third groove portions 58 are formed in the lid portion 20 of the hole plug 10. Only the first groove portion 54 may be formed. Alternatively, only the first groove portion 54 and the second groove portion 56 may be formed in the lid portion 20 of the hole plug 10.

また、図９に示す他の実施形態のように、ホールプラグ１０の蓋部２０に第１溝部５４、第２溝部５６に加えて円形の溝部７０を追加して３本の円形の溝部を有すると共に、第３溝部５８の本数を８本として構成としてもよい。また、４本以上の円形の溝部を有する構成としてもよいし、第３溝部５８の本数は４本や８本に限定されず、他の複数本や１本としてもよい。 In addition to the first groove portion 54 and the second groove portion 56, the circular groove portion 70 is added to the lid portion 20 of the hole plug 10 to form three circular groove portions as in another embodiment shown in FIG. In addition, the number of the third groove portions 58 may be eight. Moreover, it is good also as a structure which has a 4 or more circular groove part, and the number of the 3rd groove part 58 is not limited to four or eight, It is good also as another several or one piece.

また、上記実施形態では、第１溝部５４、第２溝部５６、第３溝部５８の溝に沿った方向から見た形状を台形状としたが、これに代えて、第１溝部５４、第２溝部５６、第３溝部５８の溝に沿った方向から見た形状を半円状や矩形状の他の形状としてもよい。 Moreover, in the said embodiment, although the shape seen from the direction along the groove | channel of the 1st groove part 54, the 2nd groove part 56, and the 3rd groove part 58 was made into the trapezoid shape, it replaced with this and the 1st groove part 54, 2nd The shape seen from the direction along the groove 56 and the third groove 58 may be other shapes such as a semicircular shape and a rectangular shape.

また、上記実施形態では、胴部２４を一対の平面状壁部２６と、これらの一対の平面状壁部２６の先端が連結された環状の先端部２８と、を有する構成としたが、これに代えて、胴部を円筒状との他の構成としてもよい。 In the above embodiment, the body portion 24 has a pair of planar wall portions 26 and an annular distal end portion 28 to which the distal ends of the pair of planar wall portions 26 are connected. Instead of this, the body portion may have another configuration of a cylindrical shape.

また、上記実施形態では、係合爪を、一対の平面状壁部２６と離間して設けられ、胴部２４の先端部２８の外周部にヒンジ部３４で一対の平面状壁部２６の方向へ弾性変形可能に連結された第１爪部３２と、一対の平面状壁部２６の間に形成され、胴部２４の先端部２８の外周部にヒンジ部３８で胴部２４の中心軸２４Ａ方向へ弾性変形可能に連結された第２爪部とした。これに代えて、例えば、係合爪を円筒状の外周部に周方向に沿って間隔を開けて形成され、胴部の中心軸方向へ弾性変形可能な他の係止爪としてもよい。 Further, in the above embodiment, the engaging claws are provided apart from the pair of planar wall portions 26, and the direction of the pair of planar wall portions 26 by the hinge portion 34 on the outer peripheral portion of the distal end portion 28 of the trunk portion 24. Formed between the first claw portion 32 and the pair of planar wall portions 26 that are elastically deformable to each other, and a central axis 24A of the body portion 24A at the outer peripheral portion of the distal end portion 28 of the body portion 24 by a hinge portion 38. It was set as the 2nd nail | claw part connected so that elastic deformation was possible to the direction. Instead of this, for example, the engaging claw may be formed on the cylindrical outer peripheral portion at intervals along the circumferential direction, and may be another locking claw that can be elastically deformed in the central axis direction of the trunk portion.

また、上記実施形態では、被取付部材の一例としての自動車のボディパネル１２に形成された貫通孔１４をホールプラグ１０で閉塞する構成について説明したが、本発明のホールプラグ１０は自動車のボディパネル１２以外の被取付部材に形成された貫通孔を閉塞することも可能である。 Moreover, although the said embodiment demonstrated the structure which obstruct | occludes the through-hole 14 formed in the body panel 12 of the motor vehicle as an example of a to-be-attached member with the hole plug 10, the hole plug 10 of this invention is a body panel of a motor vehicle. It is also possible to close the through holes formed in the attached members other than 12.

１０ホールプラグ
１２ボディパネル（被取付部材）
１４貫通孔
２０蓋部
２４胴部
２６胴部の平面状壁部
２８胴部の先端部
３２第１爪部（係合爪）
３４第１爪部のヒンジ部
３６第２爪部（係合爪）
３８第２爪部のヒンジ部
５４第１溝部（溝部）
５６第２溝部（溝部）
５８第３溝部（溝部）
６０胴部と蓋部との接続部
７０溝部 10 Hole plug 12 Body panel (attached member)
DESCRIPTION OF SYMBOLS 14 Through-hole 20 Lid part 24 trunk | drum 26 planar wall part of trunk | drum 28 front-end | tip part of trunk | drum 32 1st nail | claw part (engagement claw)
34 Hinge part of the first claw part 36 Second claw part (engaging claw)
38 Hinge portion of second claw portion 54 First groove portion (groove portion)
56 Second groove (groove)
58 Third groove (groove)
60 Connection between body and lid 70 Groove

Claims

A lid that covers the through hole drilled in the attached member;
A body portion extending from the back surface of the lid portion and inserted into the through hole;
An engaging claw that is formed on the outer peripheral side of the body portion and engages with a peripheral edge portion of the through hole
A first groove portion which is formed in a circular shape having a diameter smaller than that of the through hole at least on the outer peripheral side of the connecting portion between the body portion and the lid portion on the surface of the lid portion, and serves as a base point when the lid portion bends When,
Hole plug with.

2. The hole plug according to claim 1, further comprising a second groove portion formed in a circular shape having a larger diameter than the mounting hole on an outer peripheral side of the first groove portion.

The hole plug according to claim 2, further comprising a third groove portion that is radially formed on the lid portion and connects the first groove portion and the second groove portion.

The body portion includes a pair of planar wall portions extending in parallel from the back surface of the lid portion across the center axis of the body portion, and an annular shape connected to the tip portions of the pair of planar wall portions. A tip, and
The engaging claws are provided apart from the pair of planar wall portions, and are connected to the outer peripheral portion of the tip portion by a hinge portion so as to be elastically deformable in the direction of the pair of planar wall portions. A pair of second claw portions formed between the one claw portion and the pair of planar wall portions and connected to the outer peripheral portion of the tip portion so as to be elastically deformable in the direction of the central axis of the trunk portion by a hinge portion; The hole plug according to claim 1, comprising: