JP4585933B2 - Cowl top cover - Google Patents
Cowl top cover Download PDFInfo
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- JP4585933B2 JP4585933B2 JP2005200546A JP2005200546A JP4585933B2 JP 4585933 B2 JP4585933 B2 JP 4585933B2 JP 2005200546 A JP2005200546 A JP 2005200546A JP 2005200546 A JP2005200546 A JP 2005200546A JP 4585933 B2 JP4585933 B2 JP 4585933B2
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- top cover
- cowl top
- vertical wall
- main body
- reinforcing rib
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Description
本発明は、自動車用カウルトップカバーに関する。 The present invention relates to a cowl top cover for automobiles.
カウルトップカバーは、フロントガラスとフードパネルの間に設けられて、本体部に設けた小穴から車輌内に外気を取り入れ、また前端にフードパネルとの間をシールするシール部を有し、エンジンルーム内の熱い空気が前記小穴から車両内部に侵入するのを阻止している。このカウルトップカバーは、また、フードパネルに衝撃が加わったとき、その衝撃を緩和する機能を有している。
この衝撃緩和機能を向上するために、衝撃が加わった際にフードパネルが大きく変形できるように、カウルトップカバー本体部の前端部に軟質材で構成した縦壁状のフードシール部を形成するという提案がある（特許文献１）。
In order to improve this impact mitigating function, a vertical wall-shaped hood seal portion made of a soft material is formed at the front end of the cowl top cover main body so that the hood panel can be greatly deformed when an impact is applied. There is a proposal (Patent Document 1).
しかしながら、前記の提案では、縦壁状の前端部が軟質材で構成されているため、事故時など衝撃が加わった際には、所期の変形量を大きくすることに寄与するが、反面軟質材であるため剛性が小さく、経時とともに平常時の自立性を確保することが困難となり、やがて変形をきたしてフードパネルとのシール性を損なうおそれがある。特に硬質部材と軟質部材との境界において変形しやすい。
本願発明は、こうした懸念を払拭して、フードパネルが衝撃を受けたときにはその衝撃を有効に緩和し、かつ平常時の自立性も十分に確保でき、信頼性を高めたカウルトップカバーを提供することを目的とするものである。
However, in the above proposal, the vertical wall-shaped front end portion is made of a soft material, so that when an impact is applied, such as in an accident, it contributes to increasing the desired amount of deformation. Since it is a material, its rigidity is low, and it becomes difficult to ensure the normal independence with time, and there is a risk that it will eventually deform and impair the sealing performance with the hood panel. In particular, it is easily deformed at the boundary between the hard member and the soft member.
The present invention provides a cowl top cover that eliminates such concerns and effectively relieves the impact of the hood panel when it receives an impact, and can also ensure sufficient independence during normal times to enhance reliability. It is for the purpose.
本発明者は、鋭意検討した結果、カウルトップカバー本体部の前端部に設ける軟質樹脂材料からなる縦壁状部材を特定の補強手段によりその自立性を向上し得ることを知見し本発明に至った。
すなわち、本発明は、
［１］硬質部材からなるカウルトップカバー本体部の前端に、フードパネルからの衝撃を緩和する軟質部材からなる縦壁を一体に設けたカウルトップカバーであって、前記縦壁の根元部から本体部側に延長する軟質部材の延長部を設けるとともに、該縦壁のカウルトップカバー本体側と該延長部とを接続する軟質部材の補強リブを設けたことを特徴とするカウルトップカバー。
［２］硬質部材からなるカウルトップカバー本体部の前端に、フードパネルからの衝撃を緩和する軟質部材からなる縦壁を一体に設けたカウルトップカバーであって、前記縦壁の根元部から本体部側に延長する軟質部材の延長部を設けるとともに、該縦壁のカウルトップカバー本体側と該延長部及び該本体部前端部とを接続する軟質部材の補強リブを設けたことを特徴とするカウルトップカバー、
に関する。
As a result of intensive studies, the inventor has found that the vertical wall member made of a soft resin material provided at the front end portion of the cowl top cover main body can be improved in its self-supporting property by a specific reinforcing means. It was.
That is, the present invention
[1] A cowl top cover in which a vertical wall made of a soft member that alleviates an impact from a hood panel is integrally provided at the front end of a cowl top cover main body made of a hard member. A cowl top cover characterized in that an extension part of a soft member extending to the part side is provided and a reinforcing rib of a soft member for connecting the cowl top cover main body side of the vertical wall and the extension part is provided.
[2] A cowl top cover in which a vertical wall made of a soft member that alleviates an impact from a hood panel is integrally provided at the front end of a cowl top cover main body portion made of a hard member. An extension part of the soft member extending to the part side is provided, and a reinforcing rib of the soft member that connects the cowl top cover main body side of the vertical wall to the extension part and the front end part of the main body part is provided. Cowl top cover,
About.
本発明によるカウルトップカバーは、本体部前端の軟質樹脂製の縦壁にその根元部から本体部側に延長する延長部を設け、かつ縦壁と延長部及び／又は本体部とを接続する補強リブを設けたことにより、その本来の衝撃緩和能を損なうことなく、平常時の自立性を向上することができる。 The cowl top cover according to the present invention is provided with an extension portion extending from the base portion to the main body portion side on a soft resin vertical wall at the front end of the main body portion, and reinforcing the vertical wall and the extension portion and / or the main body portion. By providing the rib, it is possible to improve the self-supporting property in normal times without impairing its original impact relaxation ability.
本発明において前記硬質部材の樹脂材料としては、例えばオレフィン系熱可塑性樹脂、また、軟質部材の樹脂材料としては、例えばオレフィン系エラストマー等が好ましい。ただし、両者は接合部において十分な強度を保持する必要から両者の接着性の良好な組合せを選択することが必要である。
具体的には、たとえば、軟質樹脂として熱可塑性ポリオレフィン（ＴＰＯ）、硬質樹脂としてたとえばポリエチレン、ポリプロピレン、タルクなどで強化したポリプロピレンなどの組合せが好ましい。
In the present invention, the resin material for the hard member is preferably, for example, an olefin-based thermoplastic resin, and the resin material for the soft member is, for example, an olefin-based elastomer. However, since both need to maintain sufficient strength at the joint, it is necessary to select a combination with good adhesion between the two.
Specifically, for example, a combination of thermoplastic polyolefin (TPO) as the soft resin and polypropylene reinforced with polyethylene, polypropylene, talc, or the like as the hard resin is preferable.
本発明のカウルトップカバーの実施例を図面に基づいて説明する。
図１は、本発明のカウルトップカバーの実施例の斜視図である。図１中、１は軟質樹脂で構成された縦壁、２はカウルトップカバー本体部、３の斜線領域はこの実施例のカウルトップカバーを成形する際にシャッターが位置する部位で、縦壁の成形時に退いて縦壁の成形用軟質樹脂がこの領域に注入され一体に成形される。４は硬質部と軟質部とがラップする領域、５は補強リブを示す。図２はカウルトップカバーの実施例の断面説明図である。この図では縦壁の頂部に同じ材質で湾曲したシール材を一体成形した実施例を示しているが、シール材は別体として縦壁の頂部に設けてもよい。また、別体としてフロントパネル側に設けてもよい。図３は、別の実施例を示すもので、補強リブとしてビード形状６としたものである。図４は、縦壁を補強する補強リブ支持構造の説明図である。図５は別の実施例の補強リブ支持構造の説明図である。
An embodiment of a cowl top cover according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of an embodiment of a cowl top cover according to the present invention. In FIG. 1, 1 is a vertical wall made of a soft resin, 2 is a cowl top cover main body, 3 is a hatched area, and is a portion where a shutter is located when molding the cowl top cover of this embodiment. Retreating at the time of molding, the soft resin for molding of the vertical wall is injected into this region and integrally molded.
次に、本発明のカウルトップカバーの製造方法を説明する。
本発明のカウルトップカバーは、２段階の成形方法により容易に製造することができる。
すなわち、金型として、本体部と、縦壁と、延長部と、補強リブとを形成するためのキャビティを備え、かつその延長部形成用のキャビティの部分の少なくとも一部を閉塞するようにキャビティ内に進退するシャッターを設けた金型を用意し、前記シャッターをキャビティ内に進めて延長部の少なくとも一部を閉塞させた状態で、本体部を成形する硬質樹脂材料を金型キャビティ内に射出し本体部を成形する。次いで、シャッターをキャビティ内から後退させ、縦壁、延長部及び補強リブ成形用キャビティを形成し、そのキャビティ内に縦壁、延長部及び補強リブを成形する軟質樹脂材料を別のゲートから射出して、本体部と一体化した縦壁、延長部及び補強リブを成形する。この場合の補強リブの支持構造を図４に示す。こうして、図１、２のように縦壁の根元部から本体部に向かう縦壁延長部と、該延長部と縦壁とを接続する補強リブを一体化した自立性に優れたカウルトップカバーを製造することができる。
Next, the manufacturing method of the cowl top cover of this invention is demonstrated.
The cowl top cover of the present invention can be easily manufactured by a two-stage molding method.
That is, as a mold, a cavity for forming a main body, a vertical wall, an extension, and a reinforcing rib is provided, and the cavity is closed so as to close at least a part of the cavity for forming the extension. Prepare a mold with a shutter that moves forward and backward, and inject the hard resin material that molds the main body into the mold cavity while the shutter is advanced into the cavity and at least a part of the extension is closed. The main body is molded. Next, the shutter is retracted from inside the cavity to form a vertical wall, extension, and reinforcing rib molding cavity, and a soft resin material that molds the vertical wall, extension, and reinforcing rib into the cavity is injected from another gate. Thus, the vertical wall, the extension portion, and the reinforcing rib integrated with the main body portion are formed. The support structure of the reinforcing rib in this case is shown in FIG. Thus, as shown in FIGS. 1 and 2, a cowl top cover excellent in self-supporting ability is obtained by integrating a vertical wall extension extending from the base of the vertical wall to the main body, and a reinforcing rib connecting the extension and the vertical wall. Can be manufactured.
また、別の製造方法として、二つの上型Ａ１，Ａ２と一つの下型Ｂを使用して、ダイスライドインジェクション法により補強リブが軟質樹脂製の縦壁と、軟質樹脂製の延長部及び硬質樹脂製の本体部とに接続する形態のカウルトップカバーを製造することができる。
この場合、本体部を成形するための上型Ａ１と下型Ｂからなる金型を用意し、キャビティ内に硬質樹脂材料を射出して本体部を成形し、次いで上型を縦壁と、延長部と、補強リブとを成形するための別の上型Ａ２に代えた後、軟質樹脂材料を射出して前記本体部に一体化した縦壁、延長部及び補強リブからなるカウルトップカバーを製造することができる。この実施例では、図５に示すような補強リブの支持構造を有するものであり、図１においてリブの本体部側に突き出たシャッター部分が硬質樹脂となる態様である。したがって、この場合には補強リブは、軟質の縦壁を軟質の延長部と硬質の本体部とで支持することとなる。
As another manufacturing method, two upper molds A1 and A2 and one lower mold B are used, and a vertical rib made of a soft resin, an extension part made of soft resin, and a hard resin by a die slide injection method. A cowl top cover that is connected to the resin main body can be manufactured.
In this case, a mold composed of an upper mold A1 and a lower mold B for molding the main body is prepared, a hard resin material is injected into the cavity to mold the main body, and then the upper mold is extended to a vertical wall. After replacing the upper part A2 for forming the part and the reinforcing rib, a cowl top cover comprising a vertical wall, an extension part and a reinforcing rib integrated with the main body part by injecting a soft resin material is manufactured. can do. In this embodiment, there is a reinforcing rib support structure as shown in FIG. 5, and the shutter portion protruding to the main body side of the rib in FIG. 1 is a hard resin. Therefore, in this case, the reinforcing rib supports the soft vertical wall with the soft extension portion and the hard main body portion.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005200546A JP4585933B2 (en) | 2005-07-08 | 2005-07-08 | Cowl top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005200546A JP4585933B2 (en) | 2005-07-08 | 2005-07-08 | Cowl top cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007015609A JP2007015609A (en) | 2007-01-25 |
| JP4585933B2 true JP4585933B2 (en) | 2010-11-24 |
Family
ID=37753130
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005200546A Expired - Fee Related JP4585933B2 (en) | 2005-07-08 | 2005-07-08 | Cowl top cover |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5115076B2 (en) * | 2007-07-30 | 2013-01-09 | 日産自動車株式会社 | Engine compartment bulkhead structure |
| JP2009286322A (en) * | 2008-05-30 | 2009-12-10 | Kanto Auto Works Ltd | Cowl louver |
| JP4776662B2 (en) * | 2008-06-26 | 2011-09-21 | 小島プレス工業株式会社 | Cowl louver |
| JP5258496B2 (en) * | 2008-10-09 | 2013-08-07 | アイシン化工株式会社 | Vehicle cowl louver |
| JP5607334B2 (en) * | 2009-10-14 | 2014-10-15 | 日本プラスト株式会社 | Cowl top cover |
| GB2473135B (en) * | 2009-09-01 | 2012-08-08 | Nihon Plast Co Ltd | A cowl-top cover |
| JP5711942B2 (en) * | 2010-11-19 | 2015-05-07 | 日本プラスト株式会社 | Cowl top cover |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3478099B2 (en) * | 1997-12-04 | 2003-12-10 | トヨタ自動車株式会社 | Car cowl structure |
| JP4487358B2 (en) * | 1999-09-10 | 2010-06-23 | 豊田合成株式会社 | Cowl louver assembly structure |
| JP4651788B2 (en) * | 2000-08-02 | 2011-03-16 | 富士重工業株式会社 | Cowl panel / front bulkhead structure |
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2005
- 2005-07-08 JP JP2005200546A patent/JP4585933B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| JP2007015609A (en) | 2007-01-25 |
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