JPH06191443A - Plug made of synthetic resin - Google Patents
Plug made of synthetic resinInfo
- Publication number
- JPH06191443A JPH06191443A JP4347141A JP34714192A JPH06191443A JP H06191443 A JPH06191443 A JP H06191443A JP 4347141 A JP4347141 A JP 4347141A JP 34714192 A JP34714192 A JP 34714192A JP H06191443 A JPH06191443 A JP H06191443A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- plug
- hole
- seal lip
- synthetic resin
- 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.)
- Pending
Links
Landscapes
- Body Structure For Vehicles (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、板金等の構造板材に形
成された孔を液封的に閉じるために使用され、前記孔に
押し込んで組み付ける構成の合成樹脂製のプラグに関す
る。特に、自動車トランクの側底部に構成される凹部
の、トランクサイドパネルに設けられた水抜き孔に嵌着
されるプラグとして好適な発明である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin plug which is used for liquid-tightly closing a hole formed in a structural plate material such as a sheet metal, and which is pushed into the hole to be assembled. In particular, the present invention is suitable as a plug fitted in a drainage hole provided in a trunk side panel in a recess formed in a side bottom portion of an automobile trunk.
【０００２】ここでは、上記水抜きプラグを例に採り説
明をするがこれに限られるものではなくい。Here, the above-mentioned drain plug will be described as an example, but the drain plug is not limited to this.
【０００３】[0003]
【従来の技術】自動車のトランクルームにおいて、図５
に示す如く、リアフェンダー１とトランクサイドパネル
３とでトランク側底部に凹部５が構成される。この凹部
５には、長期間経過後には、外部から侵入してきた雨水
等Ｌが貯留して、リアフェンダー１等の錆発生を促進さ
せるおそれがある。2. Description of the Related Art FIG.
As shown in FIG. 3, the rear fender 1 and the trunk side panel 3 form a recess 5 in the bottom portion on the trunk side. After a long period of time, rainwater or the like L that has entered from the outside may be stored in the recess 5 to promote the generation of rust on the rear fender 1 or the like.
【０００４】このため、図例の如く、トランクサイドパ
ネル３側に水抜き孔７を設けておくとともに、該水抜き
孔７に強制脱着可能なプラグ９を装着し、当該プラグ９
を定期的に取りはずして、貯留水Ｌを抜いていた。For this reason, as shown in the figure, a drainage hole 7 is provided on the side of the trunk side panel 3, and a plug 9 that can be forcibly detached is attached to the drainage hole 7 and the plug 9 is attached.
Was periodically removed and the stored water L was drained.
【０００５】そして、当該プラグ９は、孔周縁を液封的
に挟持する係止シールリップ１１と潜抜けシールリップ
１３とを有する有底筒部１５からなる構成である（実開
昭６０−１８３６２号公報等参照）。The plug 9 is composed of a bottomed cylindrical portion 15 having a locking seal lip 11 for holding the peripheral edge of the hole in a liquid-tight manner and an escape seal lip 13 (actually unexamined Japanese Utility Model Sho 60-18362). No.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記ゴム製の
プラグ９は、水抜き孔７への組み付け作業性が悪かっ
た。ゴム製で柔らかく、水抜き孔７に組み付け時、潜抜
けシールリップ１３を潜り抜けさせる力が逃げ易いため
である。However, the rubber plug 9 has poor workability in assembling into the drain hole 7. This is because it is made of rubber and is soft, and when it is assembled in the water drain hole 7, the force for slipping through the slip-out seal lip 13 is easily released.
【０００７】このため、熱可塑性エラストマー等のばね
状弾性を有するとともにある程度のゴム状弾性を有する
合成樹脂材料でプラグを成形することも考えられる（特
開昭６１−２３８５７５号公報参照）。For this reason, it is possible to form the plug from a synthetic resin material such as thermoplastic elastomer having spring-like elasticity and rubber-like elasticity to some extent (see Japanese Patent Laid-Open No. 61-238575).
【０００８】しかし、合成樹脂製の場合、ゴム状弾性の
程度が低いため、各シールリップ１１、１３のパネル
（構造板材）３面に対する追従密着性が十分でなく、シ
ール性に問題が発生し易い。However, in the case of synthetic resin, since the degree of rubber-like elasticity is low, the follow-up adhesion of the seal lips 11 and 13 to the three surfaces of the panel (structural plate material) is not sufficient and a problem occurs in the sealing property. easy.
【０００９】本発明は、上記にかんがみて、組み付け作
業性が良好で、シール性の良好な合成樹脂製プラグを提
供することを目的とする。In view of the above, it is an object of the present invention to provide a synthetic resin plug which has a good workability in assembling and a good sealing property.
【００１０】[0010]
【課題を解決するための手段】本発明の合成樹脂製プラ
グは、上記課題を下記構成により解決するものである。The synthetic resin plug of the present invention solves the above problems by the following constitution.
【００１１】構造板材に形成された孔を液封的に閉じる
ために使用され、孔に押し込んで組み付ける合成樹脂製
のプラグであって、孔周縁を液封的に挟持する係止シー
ルリップと潜抜けシールリップとを外周に有し、該潜抜
けシールリップ側で先細りの円錐台筒状の本体筒部と、
該本体筒部の中間高さより細径側位置の内周面から前記
本体筒部の先細り方向と反対方向に突出する円錐台筒状
の反転ばね板部と、該反転ばね板部の円錐台筒頂部を塞
ぐように形成される操作板部とからなる。A plug made of a synthetic resin, which is used for liquid-tightly closing a hole formed in a structural plate material and is pressed into the hole to be assembled, has a locking seal lip and a latent seal for holding the peripheral edge of the hole in a liquid-tight manner. A main body cylindrical portion having a truncated seal cylindrical shape having a drop-out seal lip on the outer periphery and tapering on the side of the latent drop-out seal lip,
A conical truncated cylinder-shaped reversing spring plate portion protruding from the inner peripheral surface at a position smaller in diameter than the intermediate height of the main body cylindrical portion in a direction opposite to the tapering direction of the main body cylindrical portion, and a conical trapezoidal cylinder of the reversing spring plate portion. And an operation plate portion formed so as to close the top portion.
【００１２】[0012]
【実施例】以下、本発明を実施例に基づいて詳細に説明
をする。前述例と同一部分については、同一図符号を付
すと共に、それらの説明の全部または一部を省略する。
なお、以下の説明における設計的寸法の範囲は、プラグ
外径が４０〜５０mmの大きさの場合を想定したものであ
る。EXAMPLES The present invention will now be described in detail based on examples. The same parts as those in the above-described example are designated by the same reference numerals, and the description thereof will be omitted in whole or in part.
The range of design dimensions in the following description is based on the assumption that the outer diameter of the plug is 40 to 50 mm.
【００１３】(1) 本実施例の合成樹脂製プラグ９Ａは、
トランクサイドパネル（構造板材）３に形成された水抜
き孔（孔）７を水封（液封）的に閉じるために使用さ
れ、水抜き孔７に押し込んで組み付ける構成を、上位概
念的構成とする。(1) The synthetic resin plug 9A of this embodiment is
It is used to close the water drainage holes (holes) 7 formed in the trunk side panel (structural plate material) 3 like a water seal (liquid seal), and the configuration of pushing and assembling into the water drainage holes 7 is referred to as a higher conceptual configuration. To do.
【００１４】ここで、合成樹脂製材料としては、ばね状
弾性を有するとともにある程度のゴム状弾性も有する、
熱可塑性エラストマー（ポリエステル系、ポリアミド
系、ポリオレフィン系）又は半硬質のポリエチレン、ポ
リプロピレン等を挙げることができる。The synthetic resin material has spring-like elasticity and rubber-like elasticity to some extent.
Examples thereof include thermoplastic elastomers (polyester type, polyamide type, polyolefin type), semi-rigid polyethylene, polypropylene and the like.
【００１５】(2) 本実施例のプラグ９Ａは、本体筒部１
７と反転ばね板部１９と操作板部２０とからなる。(2) The plug 9A of the present embodiment has a main body cylindrical portion 1
7, an inversion spring plate portion 19 and an operation plate portion 20.
【００１６】本体筒部１７は、水抜き孔７の周縁を液封
的に挟持する係止シールリップ２１と潜抜けシールリッ
プ２３とを外周に有し、潜抜けシールリップ２３側で先
細りの円錐台筒状とされている。ここで、円錐台の傾斜
角度は軸線に直交する面に対して １０〜８５°とす
る。また、係止シールリップ２１と潜り抜けシールリッ
プ２３は本体筒部の外側面に直交する方向から投影した
とき若干重合（１〜２mm程度）するようになっている。
さらに、本体筒部１７の細径側外周面は、水抜き孔７へ
の組み付け作業性の見地からテーパ状に切り欠かれてい
る。The main body cylinder portion 17 has a locking seal lip 21 and a latent escape seal lip 23, which sandwich the periphery of the water drainage hole 7 in a liquid-tight manner, on the outer periphery, and a tapered cone on the latent escape seal lip 23 side. It has a pedestal shape. Here, the inclination angle of the truncated cone is set to 10 to 85 ° with respect to the plane orthogonal to the axis. Further, the locking seal lip 21 and the slipping-out seal lip 23 are designed to slightly overlap (about 1 to 2 mm) when projected from a direction orthogonal to the outer surface of the main body cylindrical portion.
Further, the outer peripheral surface on the small diameter side of the main body cylindrical portion 17 is notched in a tapered shape from the viewpoint of workability in assembling into the water drainage hole 7.
【００１７】また、本体筒部１７からの係止シールリッ
プ２１の突出量は、通常、５〜７mm、潜抜けシールリッ
プ２３の突出量は、通常、２〜３mmとする。Further, the protrusion amount of the locking seal lip 21 from the main body cylindrical portion 17 is usually 5 to 7 mm, and the protrusion amount of the submerged seal lip 23 is usually 2 to 3 mm.
【００１８】反転ばね板部１９は、本体筒部１７の中間
高さより細径側位置の内周面から本体筒部１７の先細り
方向と反対方向に突出する形状である。図例では、反転
ばね板部１９の突出位置（接続位置）は、潜抜けシール
リップ２３と、本体筒部１７の先細り側で略同位置に設
けられている。反転ばね板部１９の接続位置が中間高さ
より大径側にくると、後述の如く反転ばね板部１９が反
転して突っ張ったとき、本体筒部１７の周璧が直立方向
に変形せず、本体筒部１７の細径側を拡径させる作用を
奏し得ない。この円錐台の傾斜角度は軸線に直交する面
に対して、５〜４５°とする。また、操作板部２０は、
該反転ばね板部１９の円錐台筒頂部を塞ぐように形成さ
れる。図例では、操作板部２０はキャップ状に形成され
ている。The reversing spring plate portion 19 has a shape protruding from the inner peripheral surface of the main body tubular portion 17 at a position smaller in diameter than the intermediate height in a direction opposite to the tapering direction of the main body tubular portion 17. In the illustrated example, the protruding position (connection position) of the reversing spring plate portion 19 is provided at substantially the same position on the tapered side of the main body tubular portion 17 as the escape slip-out lip 23. When the connection position of the reversing spring plate portion 19 is on the larger diameter side than the intermediate height, when the reversing spring plate portion 19 is reversed and stretched as described later, the circumferential wall of the main body tubular portion 17 is not deformed in the upright direction, The function of expanding the small diameter side of the main body tubular portion 17 cannot be achieved. The inclination angle of this truncated cone is 5 to 45 ° with respect to the plane orthogonal to the axis. Further, the operation plate unit 20 is
The inverted spring plate portion 19 is formed so as to close the top of the truncated cone. In the illustrated example, the operation plate portion 20 is formed in a cap shape.
【００１９】そして、必然的ではないが、反転ばね板部
１９の本体筒部１との接続部下側、及び操作板部２０と
の接続部上側には、それぞれ環状切り欠き溝１９ａ、１
９ｂが形成され、反転ばね板部１９の反転操作が容易な
形状とされている。Although not inevitable, annular notch grooves 19a, 1a are provided on the lower side of the connection portion of the reversing spring plate portion 19 with the main body cylinder portion 1 and on the upper portion of the connection portion with the operation plate portion 20, respectively.
9b is formed so that the reversing spring plate portion 19 can be easily reversed.
【００２０】(3) 上記実施例のプラグ９Ａは、図３〜４
に示すような成形用金型を使用して製造する。即ち、成
形用金型は、固定金型２５と可動金型２７とからなり、
可動金型２７には、製品キャビテイ２９の中央部位置下
側には、押上げピン３１と、押上ピン３１を囲繞する筒
状スライドコア３３が配されている。(3) The plug 9A of the above embodiment is shown in FIGS.
It is manufactured using a molding die as shown in. That is, the molding die is composed of the fixed die 25 and the movable die 27,
The movable mold 27 is provided with a push-up pin 31 and a cylindrical slide core 33 surrounding the push-up pin 31 below the central position of the product cavity 29.
【００２１】成形用金型で形成される製品キャビティ２
９内に上記例示合成樹脂材料をゲート３０等を介して射
出する。そして、成形品が、形状保持能を有するが完全
に形状セットされない状態で型開きを行い、押上ピン３
１で中間までプラグ（成形品）９Ａを押しあげて、本体
筒部１７が所定の円錐台形状となった位置で、押上ピン
３１を停止させてプラグ９Ａの硬化を完了させる（図
３）。その後、プラグ９Ａを脱型する。Product cavity 2 formed by a molding die
The above exemplified synthetic resin material is injected into the container 9 through the gate 30 and the like. Then, the molded product is opened in a state in which the molded product has a shape-retaining ability but the shape is not completely set, and the push-up pin 3
The plug (molded product) 9A is pushed up to the middle with 1, and the push-up pin 31 is stopped at the position where the main body cylindrical portion 17 has a predetermined truncated cone shape to complete the curing of the plug 9A (FIG. 3). Then, the plug 9A is removed from the mold.
【００２２】(4) 次に、上記実施例のプラグの使用態様
を説明する。(4) Next, the usage of the plug of the above embodiment will be described.
【００２３】図１〜２に示すように水抜き孔７に向かっ
て押し込んでプラグ９Ａを孔７に組み付ける。このと
き、本体筒部１７は潜抜けシールリップ２３側が先細り
の円錐台筒状となっているため、潜抜けシールリップ２
３が水抜き孔７を潜り抜ける時のプラグ押し込み荷重は
小さい。また、潜り抜けた後、さらに、反転ばね板部１
９を水抜き孔７面と平行になった直後で反転し、反転ば
ね板部１９が突っ張り状態となって停止する。この反転
ばね板部１９の突っ張りにより、本体筒部１７はの周璧
が直立方向に変形して、本体筒部１７の細径側が拡径す
る。このとき、上記環状切り欠き溝１９ａ、１９ｂ閉じ
るようにしておけば、反転ばね板部１９の当該位置での
停止が確実となり好ましい。従って、本体筒部１７の中
間位置外周面が孔７の内周縁に圧接して当該部位もシー
ル箇所となり、シールリップ２１、２３によるシール箇
所に加算されるため、三点シールとなる。As shown in FIGS. 1 and 2, the plug 9A is assembled into the hole 7 by pushing it toward the water drain hole 7. At this time, since the main body cylindrical portion 17 has a truncated conical cylinder shape with the side of the latent escape seal lip 23 being tapered,
The load for pushing the plug 3 when it passes through the drainage hole 7 is small. In addition, after passing through, the reverse spring plate portion 1 is further
Immediately after becoming parallel to the surface of the drainage hole 7, 9 is inverted, and the inversion spring plate portion 19 is in a tensioned state and stops. By the tension of the reversing spring plate portion 19, the peripheral wall of the main body tubular portion 17 is deformed in the upright direction, and the diameter of the smaller diameter side of the main body tubular portion 17 is increased. At this time, it is preferable that the annular cutout grooves 19a and 19b be closed so that the reversing spring plate portion 19 can be reliably stopped at that position. Therefore, the outer peripheral surface at the intermediate position of the main body cylindrical portion 17 is pressed against the inner peripheral edge of the hole 7, and this portion also becomes a sealing portion, which is added to the sealing portion by the seal lips 21 and 23, thus forming a three-point seal.
【００２４】また、該プラグ９Ａを孔７から抜き取るに
は、車内側から押し込む場合とは逆方向の押圧力を操作
板部２０に作用させるか、又は、操作板部２０を杷持し
て車外側に引っ張れば、組み付け時とは逆に、反転ばね
板部が反転し、本体筒部１７は潜り抜けシールリップ２
１側で縮径するため、容易に外すことができる。Further, in order to pull out the plug 9A from the hole 7, a pressing force in the opposite direction to the case of pushing from the inside of the vehicle is applied to the operation plate portion 20, or the operation plate portion 20 is held and held in the vehicle. If it is pulled outward, the reverse spring plate part is reversed, contrary to the time of assembly, and the main body cylinder part 17 slips out and the seal lip 2
Since the diameter is reduced on the 1 side, it can be easily removed.
【００２５】[0025]
【発明の作用・効果】本発明の合成樹脂製プラグは、孔
周縁を液封的に挟持する係止シールリップと潜抜けシー
ルリップとを外周に有し、該潜抜けシールリップ側で先
細りの円錐台筒状の本体筒部と、該本体筒部の中間高さ
より細径側位置の内周面から本体筒部の先細り方向と反
対方向で先細りの円錐台筒状の反転ばね板部と、該反転
ばね板部の円錐台筒頂部を塞ぐように形成される操作板
部とからなる構成であるので、下記のような作用・効果
を奏する。The synthetic resin plug of the present invention has, on the outer periphery, a locking seal lip for holding the peripheral edge of the hole in a liquid-tight manner and a slip-out seal lip, and is tapered on the side of the slip-out seal lip. A truncated cone-shaped main body tubular portion, and a truncated cone-shaped inverted spring plate portion that is tapered in a direction opposite to the tapering direction of the main body tubular portion from the inner peripheral surface at a position smaller in diameter than the intermediate height of the main body tubular portion, Since it has a configuration including the operation plate portion formed so as to close the top of the truncated cone of the reversing spring plate portion, the following actions and effects are achieved.
【００２６】孔に向かって押し込んでプラグを孔に組み
付けるに際して、本体筒部は潜抜けシールリップ側が先
細りの円錐台筒状となっているため、潜抜けシールリッ
プが水抜き孔７を潜り抜ける時のプラグ押し込み荷重は
小さい。また、潜り抜けシールリップが孔を潜り抜けた
後、さらに、反転ばね板部が水抜き孔面と平行になった
直後で反転し、反転ばね板部が突っ張り状態となって停
止する。反転ばね板部の突っ張りにより、本体筒部の周
璧が直立方向に変形して、本体筒部の細径側が拡径す
る。従って、本体筒部の外周面が孔の内周縁に圧接して
当該部位もシール箇所となり、シールリップによるシー
ル箇所に加算されるため、三点シールとなる。When the plug is pushed into the hole to assemble it into the hole, the main body cylindrical portion has a truncated conical cylinder shape with the side of the submerged seal lip being tapered. The plug pushing load of is small. Further, after the slip-through seal lip has slipped through the hole, it is reversed immediately after the reversing spring plate portion is parallel to the drainage hole surface, and the reversing spring plate portion stops in a tensioned state. The circumferential wall of the main body tubular portion is deformed in the upright direction by the bulging of the reversing spring plate portion, and the small diameter side of the main body tubular portion expands. Therefore, the outer peripheral surface of the main body cylindrical portion is pressed against the inner peripheral edge of the hole, and the corresponding portion also becomes a sealing portion, which is added to the sealing portion by the seal lip, thus forming a three-point seal.
【００２７】よって、本発明の合成樹脂製プラグは、組
み付け作業性が良好で、シール性も良好となる。Therefore, the synthetic resin plug of the present invention has good assembling workability and good sealing performance.
【図１】本発明の合成樹脂製プラグの一例における水抜
き孔への組み付け直前の状態を示す断面図FIG. 1 is a cross-sectional view showing a state of an example of a synthetic resin plug of the present invention immediately before being assembled in a water drain hole.
【図２】同じく組み付け完了状態を示す断面図FIG. 2 is a sectional view showing a state where the assembling is completed similarly.
【図３】本発明の合成樹脂製プラグを製造するための成
形用金型の型閉時の概略断面図FIG. 3 is a schematic cross-sectional view of a molding die for producing the synthetic resin plug of the present invention when the die is closed.
【図４】同じく型開き時の概略断面図FIG. 4 is a schematic sectional view of the same when the mold is opened.
【図５】従来のゴム製プラグの装着態様断面図FIG. 5 is a cross-sectional view of a conventional rubber plug mounting mode.
３ トランクサイドパネル（構造板材） ７ 水抜き孔（孔） ９、９Ａ プラグ １７ 本体筒部 １９ 反転ばね板部 ２０ 操作板部 ２１ 係止シールリップ ２３ 潜抜けシールリップ 3 Trunk side panel (structural plate material) 7 Water drainage hole (hole) 9, 9A plug 17 Main body cylinder part 19 Reversing spring plate part 20 Operation plate part 21 Locking seal lip 23 Latent slip-out seal lip
Claims (1)
るために使用され、前記孔に押し込んで組み付ける合成
樹脂製のプラグであって、 孔周縁を液封的に挟持する係止シールリップと潜抜けシ
ールリップとを外周に有し、該潜抜けシールリップ側で
先細りの円錐台筒状の本体筒部と、該本体筒部の中間高
さより細径側位置の内周面から前記本体筒部の先細り方
向と反対方向に突出する円錐台筒状の反転ばね板部と、
該反転ばね板部の円錐台筒頂部を塞ぐように形成される
操作板部とからなる構成の合成樹脂製プラグ。1. A locking seal used for closing a hole formed in a structural plate material in a liquid-tight manner, and being a synthetic resin plug which is pushed into the hole to be assembled and which holds a peripheral edge of the hole in a liquid-tight manner. The main body cylindrical portion having a lip and a submerged seal lip on the outer periphery, and having a tapered truncated cone shape on the submerged seal lip side, and the inner peripheral surface at a position smaller in diameter than the intermediate height of the main body tubular portion. A conical-cylinder-shaped inverted spring plate portion projecting in a direction opposite to the tapering direction of the main body cylindrical portion;
A plug made of synthetic resin, which comprises an operating plate formed so as to close the top of the truncated cone of the inversion spring plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4347141A JPH06191443A (en) | 1992-12-25 | 1992-12-25 | Plug made of synthetic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4347141A JPH06191443A (en) | 1992-12-25 | 1992-12-25 | Plug made of synthetic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06191443A true JPH06191443A (en) | 1994-07-12 |
Family
ID=18388192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4347141A Pending JPH06191443A (en) | 1992-12-25 | 1992-12-25 | Plug made of synthetic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06191443A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001287667A (en) * | 2000-04-10 | 2001-10-16 | Denso Corp | Front end panel |
| KR100483117B1 (en) * | 2002-06-28 | 2005-04-14 | 현대자동차주식회사 | Dissimilar material manufactured Drain plug and a manufacturing process |
| WO2011059026A1 (en) * | 2009-11-12 | 2011-05-19 | 株式会社ニフコ | Closing plug for vehicles |
| TWI449845B (en) * | 2010-09-03 | 2014-08-21 | Nifco Inc | Hole plug |
-
1992
- 1992-12-25 JP JP4347141A patent/JPH06191443A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001287667A (en) * | 2000-04-10 | 2001-10-16 | Denso Corp | Front end panel |
| KR100483117B1 (en) * | 2002-06-28 | 2005-04-14 | 현대자동차주식회사 | Dissimilar material manufactured Drain plug and a manufacturing process |
| WO2011059026A1 (en) * | 2009-11-12 | 2011-05-19 | 株式会社ニフコ | Closing plug for vehicles |
| JP2011121575A (en) * | 2009-11-12 | 2011-06-23 | Nifco Inc | Closing plug for automobile |
| TWI449845B (en) * | 2010-09-03 | 2014-08-21 | Nifco Inc | Hole plug |
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