JP2003314360A - Resin cylinder head cover - Google Patents
Resin cylinder head coverInfo
- Publication number
- JP2003314360A JP2003314360A JP2002123749A JP2002123749A JP2003314360A JP 2003314360 A JP2003314360 A JP 2003314360A JP 2002123749 A JP2002123749 A JP 2002123749A JP 2002123749 A JP2002123749 A JP 2002123749A JP 2003314360 A JP2003314360 A JP 2003314360A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- head cover
- rib
- partition wall
- cloth
- 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
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 29
- 239000011347 resin Substances 0.000 title claims abstract description 29
- 238000005192 partition Methods 0.000 abstract description 51
- 239000004744 fabric Substances 0.000 abstract description 43
- 230000003628 erosive effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 10
- 239000003921 oil Substances 0.000 description 8
- 229920005992 thermoplastic resin Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
(57)【要約】
【課題】 シリンダヘッドカバーがその上に置き忘れら
れた布等から熱を受けた場合にシリンダヘッドカバーの
隔壁（本体）の溶損、損傷を抑制できる樹脂製シリンダ
ヘッドカバーの提供。
【解決手段】 （１）シリンダヘッドカバー１０の外面
２０ａに外面２０ａから突出するリブ３１が設けられた
樹脂製シリンダヘッドカバー。（２）リブ３１は一方向
に延びている。（３）リブ３１は複数設けられており、
リブ３１間に、リブ３１よりもリブ高さが低いリブがリ
ブ３１と交叉する方向に設けられている。（４）シリン
ダヘッドカバー１０の外面２０ａに外面２０ａから突出
する突起が設けられた樹脂製シリンダヘッドカバー。
(57) [Problem] To provide a resin cylinder head cover capable of suppressing erosion and damage of a partition wall (main body) of a cylinder head cover when the cylinder head cover receives heat from a cloth or the like left on the cylinder head cover. (1) A resin cylinder head cover in which a rib 31 protruding from the outer surface 20a is provided on an outer surface 20a of the cylinder head cover 10. (2) The rib 31 extends in one direction. (3) A plurality of ribs 31 are provided,
A rib having a lower rib height than the rib 31 is provided between the ribs 31 in a direction crossing the rib 31. (4) A resin cylinder head cover provided with a projection projecting from the outer surface 20a on the outer surface 20a of the cylinder head cover 10.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内燃機関のシリン
ダヘッドに取り付けられる、樹脂製のシリンダヘッドカ
バーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin cylinder head cover mounted on a cylinder head of an internal combustion engine.
【０００２】[0002]
【従来の技術】従来、樹脂製シリンダヘッドカバーの材
料として熱硬化性樹脂（たとえば、不飽和ポリエステル
樹脂）を採用していた。しかし、近年、低コスト化をは
かるために、樹脂製シリンダヘッドカバーの材料として
熱可塑性の樹脂（たとえば、ポリアミド樹脂）が採用さ
れるようになった。2. Description of the Related Art Conventionally, a thermosetting resin (for example, unsaturated polyester resin) has been used as a material for a resin cylinder head cover. However, in recent years, in order to reduce the cost, a thermoplastic resin (for example, a polyamide resin) has been adopted as a material for the resin cylinder head cover.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の、熱可
塑性樹脂製のシリンダヘッドカバーには、つぎの課題
（問題点）がある。熱可塑性樹脂製であるため、仮にメ
ンテナンス時にシリンダヘッドカバー上に置き忘れられ
た布等がエンジン運転時の排気系の熱で高温になった場
合、シリンダヘッドカバーが熱により損傷し、シリンダ
ヘッドカバーが溶け、シリンダヘッドカバーに穴があく
おそれがある。本発明の目的は、シリンダヘッドカバー
がその上に置き忘れられた布等から熱を受けた場合にシ
リンダヘッドカバーの隔壁（本体）の溶損、損傷を抑制
できる樹脂製シリンダヘッドカバーを提供することにあ
る。However, the conventional cylinder head cover made of thermoplastic resin has the following problems (problems). Since it is made of thermoplastic resin, if the cloth etc. left on the cylinder head cover during maintenance becomes hot due to the heat of the exhaust system during engine operation, the cylinder head cover will be damaged by the heat and the cylinder head cover will melt, There is a risk of holes in the head cover. An object of the present invention is to provide a resin-made cylinder head cover that can prevent melting and damage of a partition wall (main body) of the cylinder head cover when the cylinder head cover receives heat from a cloth or the like left on it.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成する本発
明はつぎの通りである。
（１） シリンダヘッドカバーの外面に該外面から突出
するリブが設けられた樹脂製シリンダヘッドカバー。
（２） 前記リブは一方向に延びている（１）記載の樹
脂製シリンダヘッドカバー。
（３） 前記リブは複数設けられており、リブと該リブ
と隣接するリブとの間に、前記リブよりもリブ高さが低
いリブが前記リブと交叉する方向に設けられている、
（２）記載の樹脂製シリンダヘッドカバー。
（４） シリンダヘッドカバーの外面に該外面から突出
する突起が設けられた樹脂製シリンダヘッドカバー。The present invention which achieves the above object is as follows. (1) A resin-made cylinder head cover having ribs protruding from the outer surface of the cylinder head cover. (2) The resin cylinder head cover according to (1), wherein the rib extends in one direction. (3) A plurality of the ribs are provided, and a rib having a rib height lower than that of the rib is provided between the rib and a rib adjacent to the rib in a direction intersecting with the rib.
(2) The resin cylinder head cover described in (2). (4) A cylinder head cover made of resin, in which a protrusion protruding from the outer surface of the cylinder head cover is provided.
【０００５】上記（１）の樹脂製シリンダヘッドカバー
では、シリンダヘッドカバーの外面に該外面から突出す
るリブが設けられているため、エンジンルームでのメン
テナンス作業後にオイルの付いた布等をシリンダヘッド
カバーの上に置き忘れた場合でも、布等はリブと接触す
るだけでシリンダヘッドカバーの隔壁とは接触しない。
そのため、その布等がエンジン排気系の熱で高温になっ
ても、リブが溶けることはあっても、シリンダヘッドカ
バーの隔壁が溶損することはない。したがって、シリン
ダヘッドカバーの隔壁に穴があくことを抑制できる。ま
た、リブが設けられているので、エンジンルームでのメ
ンテナンス作業後にオイルの付いた布等をシリンダヘッ
ドカバーの上に置き忘れた場合でも、布等はリブと接触
するだけでシリンダヘッドカバーの隔壁とは接触しな
い。そのため、その布等がエンジン排気系の熱で高温に
なっても、布等とシリンダヘッドカバー隔壁との間に空
気層があり、布等の熱が直接シリンダヘッドカバーの隔
壁に伝わらない。また、熱が布とシリンダヘッドカバー
の隔壁との間にこもり難くなる。上記（２）の樹脂製シ
リンダヘッドカバーでは、一方向に空気が流れるので、
空気がこもり難くなり、上記（１）の作用が助長され
る。上記（３）の樹脂製シリンダヘッドカバーでは、上
記（２）のリブのリブ高さよりも低いリブが上記（２）
のリブと交叉する方向に設けられているので、上記
（２）のリブ間に布等が落ち込むことを抑制できる。ま
た、リブ高さを上記（２）のリブのリブ高さよりも低く
しているので、布等とシリンダヘッドカバー隔壁との間
で空気の流通が維持される。さらに、上記（２）のリブ
と交叉する方向にリブを設けたので、さらにシリンダヘ
ッドカバーの剛性アップがはかられる。上記（４）の樹
脂製シリンダヘッドカバーでは、シリンダヘッドカバー
の外面に該外面から突出する突起が設けられているた
め、上記（１）に準じる作用が得られる。なお、空気の
流通性はリブに比べて増す。In the resin cylinder head cover of the above (1), the ribs protruding from the outer surface of the cylinder head cover are provided on the outer surface of the cylinder head cover. Therefore, after the maintenance work in the engine room, a cloth with oil is put on the cylinder head cover. Even if it is left behind, the cloth or the like only contacts the ribs and does not contact the partition wall of the cylinder head cover.
Therefore, even if the cloth or the like is heated to a high temperature by the heat of the engine exhaust system, the rib may be melted, but the partition wall of the cylinder head cover is not melted. Therefore, it is possible to prevent the partition wall of the cylinder head cover from having a hole. In addition, since the ribs are provided, even if you leave the oiled cloth on the cylinder head cover after maintenance work in the engine room, the cloth will only contact the ribs and will not contact the partition wall of the cylinder head cover. do not do. Therefore, even if the cloth or the like is heated to a high temperature by the heat of the engine exhaust system, there is an air layer between the cloth and the cylinder head cover partition wall, and the heat of the cloth or the like is not directly transmitted to the partition wall of the cylinder head cover. Further, heat is less likely to be trapped between the cloth and the partition wall of the cylinder head cover. In the resin cylinder head cover of the above (2), since air flows in one direction,
The air is less likely to stay in the air, which promotes the action (1). In the resin cylinder head cover of (3) above, ribs lower than the rib height of the rib of (2) above are (2) above.
Since the ribs are provided so as to intersect with the ribs, it is possible to prevent the cloth or the like from falling between the ribs in (2) above. Further, since the rib height is set lower than the rib height of the rib in (2) above, air circulation is maintained between the cloth and the like and the cylinder head cover partition wall. Further, since the rib is provided in the direction intersecting with the rib of (2) above, the rigidity of the cylinder head cover can be further increased. In the resin cylinder head cover described in (4) above, since the protrusion that protrudes from the outer surface of the cylinder head cover is provided on the outer surface of the cylinder head cover, the operation according to (1) above can be obtained. The air flowability is higher than that of ribs.
【０００６】[0006]
【発明の実施の形態】図１、図２、図４は、本発明実施
例１の樹脂製シリンダヘッドカバーを示しており、図３
は、本発明実施例２の樹脂製シリンダヘッドカバーを示
している。本発明実施例１と本発明実施例２にわたって
共通する部分には、本発明実施例１と本発明実施例２に
わたって共通する符号を付してある。まず、本発明実施
例１と本発明実施例２に共通する部分を、図１〜図４を
参照して、説明する。本発明実施例のシリンダヘッドカ
バー１０は、内燃機関のシリンダヘッド（図示略）に取
り付けられる。シリンダヘッドカバー１０は、熱可塑性
樹脂（たとえば、ポリアミド樹脂）製である。ただし、
シリンダヘッドカバー１０は、熱可塑性樹脂製に限定さ
れるものではなく、熱硬化性樹脂製であってもよい。シ
リンダヘッドカバー１０は、隔壁２０と、突出部３０
を、有する。1, 2, and 4 show a resin cylinder head cover of Embodiment 1 of the present invention.
[Fig. 4] shows a resin cylinder head cover of Embodiment 2 of the present invention. The parts common to the first embodiment of the present invention and the second embodiment of the present invention are denoted by the same reference numerals for the first embodiment of the present invention and the second embodiment of the present invention. First, portions common to the first and second embodiments of the present invention will be described with reference to FIGS. The cylinder head cover 10 of the embodiment of the present invention is attached to a cylinder head (not shown) of an internal combustion engine. The cylinder head cover 10 is made of thermoplastic resin (for example, polyamide resin). However,
The cylinder head cover 10 is not limited to the thermoplastic resin, and may be a thermosetting resin. The cylinder head cover 10 includes a partition wall 20 and a protrusion 30.
Has.
【０００７】隔壁２０は、シリンダヘッドカバー１０の
内部と外部を隔てる壁である。隔壁２０は、上壁２１と
側壁２２を、有する。上壁２１には、図４に示すよう
に、エンジンオイルが注油されるオイル注油口２１ａ
と、点火プラグが挿入される点火プラグ挿入用穴２１ｂ
が設けられている。側壁２２は、上壁２１の外縁から下
方に延びる。側壁２２の外面の上下方向途中部位には、
段差部２２ａが設けられている。ただし、段差部２２ａ
は設けられていなくてもよい（図示例では、段差部２２
ａが設けられている場合を示している）。The partition wall 20 is a wall that separates the inside and the outside of the cylinder head cover 10. The partition wall 20 has an upper wall 21 and a side wall 22. As shown in FIG. 4, the upper wall 21 has an oil filling port 21a through which engine oil is filled.
And a spark plug insertion hole 21b into which the spark plug is inserted
Is provided. The side wall 22 extends downward from the outer edge of the upper wall 21. In the middle part of the outer surface of the side wall 22 in the vertical direction,
A step portion 22a is provided. However, the step portion 22a
Need not be provided (in the illustrated example, the step portion 22
a is provided).
【０００８】突出部３０は、隔壁２０の外面２０ａに設
けられる。ここで、突出部３０は、隔壁２０の外面２０
ａ全体に設けられていてもよく、隔壁２０の外面２０ａ
の一部のみに設けられていてもよい（図示例では、隔壁
２０の外面２０ａの一部のみに設けられる場合を示して
いる）。突出部３０は、隔壁２０と一体に形成される
か、または、隔壁２０と別体に形成されて隔壁２０に固
定して取り付けられる。突出部３０は、隔壁２０の外面
２０ａから上方に突出する。突出部３０は、リブ３１ま
たは突起３２からなる。The protruding portion 30 is provided on the outer surface 20a of the partition wall 20. Here, the protrusion 30 is the outer surface 20 of the partition wall 20.
The outer surface 20a of the partition wall 20 may be provided on the entire a.
May be provided only on a part of the above (in the illustrated example, it is shown that it is provided on only a part of the outer surface 20a of the partition wall 20). The protrusion 30 is formed integrally with the partition wall 20, or is formed separately from the partition wall 20 and fixedly attached to the partition wall 20. The projecting portion 30 projects upward from the outer surface 20 a of the partition wall 20. The protrusion 30 includes a rib 31 or a protrusion 32.
【０００９】つぎに、本発明実施例１と本発明実施例２
にわたって共通する部分の作用を説明する。シリンダヘ
ッドカバー１０の隔壁２０の外面２０ａに該外面２０ａ
から突出する突出部３０が設けられているため、エンジ
ンルームでのメンテナンス作業後にオイルの付いた布等
（図示略）をシリンダヘッドカバー１０の上に置き忘れ
た場合でも、布等は突出部３０と接触するだけで隔壁２
０とは接触しない（突出部３０により隔壁２０から浮い
た状態になる）。そのため、その布等がエンジン排気系
の熱で高温になっても、突出部３０が溶けることはあっ
ても、隔壁２０が溶損することはない。したがって、隔
壁２０に穴があくことを抑制できる。Next, Example 1 of the present invention and Example 2 of the present invention
The operation of the common parts will be explained. The outer surface 20a of the partition wall 20 of the cylinder head cover 10 is attached to the outer surface 20a.
Since the protrusion 30 protruding from the cylinder head cover 10 is provided, even if a cloth or the like (not shown) with oil is left on the cylinder head cover 10 after the maintenance work in the engine room, the cloth or the like comes into contact with the protrusion 30. Just do the partition 2
It does not come into contact with 0 (it is in a state of being floated from the partition wall 20 due to the protrusion 30). Therefore, even if the cloth or the like is heated to a high temperature by the heat of the engine exhaust system, the protrusions 30 may be melted, but the partition wall 20 is not damaged. Therefore, it is possible to prevent the partition wall 20 from having holes.
【００１０】また、突出部３０が設けられているので、
エンジンルームでのメンテナンス作業後にオイルの付い
た布等（図示略）をシリンダヘッドカバー１０の上に置
き忘れた場合でも、布等は突出部３０と接触するだけで
隔壁２０とは接触しない。そのため、その布等がエンジ
ン排気系の熱で高温になっても、布等と隔壁２０との間
に空気層があり、布等の熱が直接隔壁２０に伝わること
はない。また、熱が布等と隔壁２０との間にこもり難く
なる。また、シリンダヘッドカバー１０が熱可塑性樹脂
製である場合、シリンダヘッドカバー１０は高温下で溶
ける。そのため、シリンダヘッドカバー１０が熱可塑性
樹脂製である場合、シリンダヘッドカバー１０はリサイ
クル可能である。Further, since the protrusion 30 is provided,
Even if a cloth or the like (not shown) with oil is left on the cylinder head cover 10 after the maintenance work in the engine room, the cloth or the like only contacts the protrusion 30 and does not contact the partition wall 20. Therefore, even if the cloth or the like becomes high temperature due to the heat of the engine exhaust system, there is an air layer between the cloth and the partition wall 20, and the heat of the cloth or the like is not directly transmitted to the partition wall 20. In addition, heat is less likely to stay between the cloth and the partition wall 20. When the cylinder head cover 10 is made of thermoplastic resin, the cylinder head cover 10 melts at high temperature. Therefore, when the cylinder head cover 10 is made of thermoplastic resin, the cylinder head cover 10 can be recycled.
【００１１】つぎに、本発明各実施例に特有な部分を説
明する。本発明実施例１では、図１、図２、図４に示す
ように、突出部３０は、リブ３１からなる。リブ３１
は、図２に示すように、第１のリブ３１ａと、第１のリ
ブ３１ａよりもリブ高さが低い第２のリブ３１ｂと、か
らなる。ただし、第２のリブ３１ｂは、必須ではない
（図１、図４では、第２のリブ３１ｂが設けられていな
い場合を示している）。第１のリブ３１ａは、一方向に
延びている。第１のリブ３１ａは、複数設けられてい
る。第２のリブ３１ｂは、第１のリブ３１ａ間に設けら
れる。第２のリブ３１ｂは、第１のリブ３１ｂと交叉す
る方向（たとえば、第１のリブ３１ａの延び方向と直交
する方向）に延びている。第２のリブ３１ｂは、複数設
けられている。第２のリブ３１ｂが隔壁２０の外面２０
ａから突出するリブ高さＢは、第１のリブ３１ａが隔壁
２０の外面２０ａから突出するリブ高さＡより低い。Next, a portion peculiar to each embodiment of the present invention will be described. In the first embodiment of the present invention, as shown in FIGS. 1, 2, and 4, the protruding portion 30 is composed of a rib 31. Rib 31
As shown in FIG. 2, includes a first rib 31a and a second rib 31b having a rib height lower than that of the first rib 31a. However, the second rib 31b is not essential (FIGS. 1 and 4 show a case where the second rib 31b is not provided). The first rib 31a extends in one direction. A plurality of first ribs 31a are provided. The second rib 31b is provided between the first ribs 31a. The second rib 31b extends in a direction intersecting with the first rib 31b (for example, a direction orthogonal to the extending direction of the first rib 31a). A plurality of second ribs 31b are provided. The second rib 31b is provided on the outer surface 20 of the partition wall 20.
The rib height B protruding from a is lower than the rib height A protruding from the outer surface 20a of the partition wall 20 by the first rib 31a.
【００１２】本発明実施例１では、第１のリブ３１ａが
一方向に延びているので、第１のリブ３１ａが設けられ
ている部分を流れる空気は一方向に流れる。そのため、
エンジンルームでのメンテナンス作業後にオイルの付い
た布等をシリンダヘッドカバー１０の上に置き忘れ、そ
の布等がエンジン排気系の熱で高温になっても、布等と
隔壁２０との間に空気がこもり難い。また、第２のリブ
３１ｂが設けられているので、エンジンルームでのメン
テナンス作業後にオイルの付いた布等をシリンダヘッド
カバー１０の上に置き忘れ場場合でも、第１のリブ３１
ａ間に布等が落ち込むことを抑制できる。また、第２の
リブ３１ｂのリブ高さＢは第１のリブ３１ａのリブ高さ
Ａより低いので、第２のリブ３１ｂを設けた場合でも、
布等と隔壁２０との間で空気の流通が維持される。In the first embodiment of the present invention, since the first rib 31a extends in one direction, the air flowing through the portion where the first rib 31a is provided flows in one direction. for that reason,
After the maintenance work in the engine room, a cloth or the like with oil is left on the cylinder head cover 10, and even if the cloth or the like becomes high temperature due to the heat of the engine exhaust system, the air is trapped between the cloth and the partition wall 20. hard. Further, since the second ribs 31b are provided, even if a cloth or the like with oil is left on the cylinder head cover 10 after maintenance work in the engine room, the first ribs 31b are not necessary.
It is possible to prevent a cloth or the like from falling between a. Moreover, since the rib height B of the second rib 31b is lower than the rib height A of the first rib 31a, even when the second rib 31b is provided,
Air circulation is maintained between the cloth and the partition wall 20.
【００１３】また、第１のリブ３１ａが設けられるの
で、シリンダヘッドカバー１０の剛性アップがはかられ
る。また、第２のリブ３１ａが設けられるので、さらに
シリンダヘッドカバー１０の剛性アップがはかられる。
その結果、隔壁２０を薄肉化できる。したがって、シリ
ンダヘッドカバー１０の材料を節約できコストダウンを
はかることができる。すなわち、リブ３１を設けるとい
う１種類の手段が、隔壁２０の溶損防止と、隔壁２０の
剛性アップとそれによる隔壁２０の薄肉化という２つの
作用、効果を同時に達成している。Since the first rib 31a is provided, the rigidity of the cylinder head cover 10 can be increased. Further, since the second rib 31a is provided, the rigidity of the cylinder head cover 10 can be further increased.
As a result, the partition wall 20 can be thinned. Therefore, the material of the cylinder head cover 10 can be saved and the cost can be reduced. That is, one kind of means of providing the ribs 31 simultaneously achieves two functions and effects of preventing melting damage of the partition wall 20, increasing the rigidity of the partition wall 20 and thinning the partition wall 20 accordingly.
【００１４】本発明実施例２では、図３に示すように、
突出部３０は、突起３２からなる。突起３２は、複数設
けられている。突起３２は、たとえば、格子の交点（格
子点状）に設けられる。ただし、突起３２は、格子点状
のような規則性をもたずに不規則に設けられていてもよ
い。In the second embodiment of the present invention, as shown in FIG.
The protrusion 30 includes a protrusion 32. A plurality of protrusions 32 are provided. The protrusions 32 are provided, for example, at the intersections (lattice points) of the lattice. However, the protrusions 32 may be provided irregularly without having the regularity like a lattice point.
【００１５】本発明実施例２では、突部３０が突起３２
からなるため、突起３２が設けられている部分を流れる
空気の流通性はよい。そのため、エンジンルームでのメ
ンテナンス作業後にオイルの付いた布等をシリンダヘッ
ドカバー１０の上に置き忘れ、その布等がエンジン排気
系の熱で高温になっても、布等と隔壁２０との間に空気
がこもり難い。なお、空気の流通性は、突部３０がリブ
３１からなる場合に比べて増す。In the second embodiment of the present invention, the protrusion 30 is formed by the protrusion 32.
Therefore, the air flowing through the portion where the protrusion 32 is provided has good flowability. Therefore, even if the cloth or the like with oil is left on the cylinder head cover 10 after the maintenance work in the engine room, and the cloth or the like becomes high temperature due to the heat of the engine exhaust system, the air or the like may be left between the cloth and the partition wall 20. Hard to stay The air flowability is increased as compared with the case where the protrusion 30 is formed of the rib 31.
【００１６】[0016]
【発明の効果】請求項１記載の樹脂製シリンダヘッドカ
バーによれば、シリンダヘッドカバーの外面に該外面か
ら突出するリブが設けられているため、エンジンルーム
でのメンテナンス作業後にオイルの付いた布等をシリン
ダヘッドカバーの上に置き忘れた場合でも、布等はリブ
と接触するだけでシリンダヘッドカバーの隔壁とは接触
しない。そのため、その布等がエンジン排気系の熱で高
温になっても、リブが溶けることはあっても、シリンダ
ヘッドカバーの隔壁が溶損することはない。したがっ
て、シリンダヘッドカバーの隔壁に穴があくことを抑制
できる。また、リブが設けられているので、エンジンル
ームでのメンテナンス作業後にオイルの付いた布等をシ
リンダヘッドカバーの上に置き忘れた場合でも、布等は
リブと接触するだけでシリンダヘッドカバーの隔壁とは
接触しない。そのため、その布等がエンジン排気系の熱
で高温になっても、布等とシリンダヘッドカバー隔壁と
の間に空気層があり、布等の熱が直接シリンダヘッドカ
バーの隔壁に伝わらない。また、熱が布とシリンダヘッ
ドカバーの隔壁との間にこもり難くなる。請求項２記載
の樹脂製シリンダヘッドカバーによれば、一方向に空気
が流れるので、空気がこもり難くなり、請求項１の作用
が助長される。請求項３記載の樹脂製シリンダヘッドカ
バーによれば、高さが低い方のリブが高さが高い方のリ
ブと交叉する方向に設けられているので、高さが高い方
のリブ間に布等が落ち込むことを抑制できる。また、リ
ブ高さを、高さが高い方のリブよりも低くしているの
で、布等とシリンダヘッドカバー隔壁との間で空気の流
通が維持される。さらに、高さが低い方のリブを高さが
高い方のリブと交叉させているので、さらにシリンダヘ
ッドカバーの剛性アップがはかられる。請求項４記載の
樹脂製シリンダヘッドカバーによれば、シリンダヘッド
カバーの外面に該外面から突出する突起が設けられてい
るため、請求項１に準じる効果が得られる。なお、空気
の流通性はリブに比べて増す。According to the resin cylinder head cover of the first aspect of the present invention, the outer surface of the cylinder head cover is provided with the rib protruding from the outer surface. Therefore, after the maintenance work in the engine room, the cloth covered with oil is removed. Even if it is left on the cylinder head cover, the cloth or the like only contacts the ribs and does not contact the partition wall of the cylinder head cover. Therefore, even if the cloth or the like is heated to a high temperature by the heat of the engine exhaust system, the rib may be melted, but the partition wall of the cylinder head cover is not melted. Therefore, it is possible to prevent the partition wall of the cylinder head cover from having a hole. In addition, since the ribs are provided, even if you leave the oiled cloth on the cylinder head cover after maintenance work in the engine room, the cloth will only contact the ribs and will not contact the partition wall of the cylinder head cover. do not do. Therefore, even if the cloth or the like is heated to a high temperature by the heat of the engine exhaust system, there is an air layer between the cloth and the cylinder head cover partition wall, and the heat of the cloth or the like is not directly transmitted to the partition wall of the cylinder head cover. Further, heat is less likely to be trapped between the cloth and the partition wall of the cylinder head cover. According to the resin cylinder head cover of the second aspect, since the air flows in one direction, it becomes difficult for the air to stay, and the action of the first aspect is promoted. According to the resin cylinder head cover of claim 3, since the rib having the lower height is provided in the direction intersecting with the rib having the higher height, a cloth or the like is provided between the ribs having the higher height. Can be suppressed. Further, since the rib height is lower than that of the rib having the higher height, the air flow is maintained between the cloth and the like and the cylinder head cover partition wall. Further, since the rib having the lower height intersects with the rib having the higher height, the rigidity of the cylinder head cover can be further increased. According to the resin-made cylinder head cover of the fourth aspect, since the protrusion that protrudes from the outer surface of the cylinder head cover is provided on the outer surface of the cylinder head cover, the effect according to the first aspect can be obtained. The air flowability is higher than that of ribs.
【図１】本発明実施例１の樹脂製シリンダヘッドカバー
の、第２のリブが設けられていない場合の、一部を破断
して示した斜視図である。FIG. 1 is a partially cutaway perspective view of a resin cylinder head cover according to a first embodiment of the present invention when a second rib is not provided.
【図２】本発明実施例１の樹脂製シリンダヘッドカバー
の、第２のリブが設けられている場合の、一部を破断し
て示した斜視図である。FIG. 2 is a partially cutaway perspective view of the resin cylinder head cover according to the first embodiment of the present invention in which a second rib is provided.
【図３】本発明実施例２の樹脂製シリンダヘッドカバー
の、一部を破断して示した斜視図である。FIG. 3 is a partially cutaway perspective view of a resin cylinder head cover according to a second embodiment of the present invention.
【図４】本発明実施例１の樹脂製シリンダヘッドカバー
の、全体斜視図である。FIG. 4 is an overall perspective view of a resin cylinder head cover according to the first embodiment of the present invention.
１０ シリンダヘッドカバー ２０ 隔壁 ２０ａ 隔壁の外面 ２１ 隔壁の上壁 ２２ 隔壁の側壁 ２２ａ 段差部 ３０ 突部 ３１ リブ ３１ａ 第１のリブ ３１ｂ 第２のリブ ３２ 突起 Ａ 第１のリブのリブ高さ Ｂ 第２のリブのリブ高さ 10 Cylinder head cover 20 partitions 20a Outer surface of partition wall 21 Upper wall of partition wall 22 Side wall of partition wall 22a Step portion 30 protrusions 31 ribs 31a First rib 31b Second rib 32 protrusions A Rib height of the first rib B Rib height of the second rib
───────────────────────────────────────────────────── フロントページの続き (72)発明者 安永 公典 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 (72)発明者 長谷川 直広 愛知県豊田市下市場町３丁目30番地 小島 プレス工業株式会社内 Ｆターム(参考） 3G024 AA72 BA05 BA06 BA07 BA09 FA03 FA10 HA13 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yasunaga 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto Car Co., Ltd. (72) Inventor Naohiro Hasegawa Kojima, 3-30 Shimoichiba-cho, Toyota-shi, Aichi Press Industry Co., Ltd. F-term (reference) 3G024 AA72 BA05 BA06 BA07 BA09 FA03 FA10 HA13
Claims (4)
ら突出するリブが設けられた樹脂製シリンダヘッドカバ
ー。1. A resin cylinder head cover, wherein a rib protruding from the outer surface is provided on the outer surface of the cylinder head cover.
記載の樹脂製シリンダヘッドカバー。2. The rib extends in one direction.
The resin cylinder head cover described.
該リブと隣接するリブとの間に、前記リブよりもリブ高
さが低いリブが前記リブと交叉する方向に設けられてい
る、請求項２記載の樹脂製シリンダヘッドカバー。3. A plurality of the ribs are provided, and a rib having a rib height lower than that of the rib is provided between the rib and a rib adjacent to the rib in a direction intersecting with the rib. The resin cylinder head cover according to claim 2.
ら突出する突起が設けられた樹脂製シリンダヘッドカバ
ー。4. A cylinder head cover made of resin, wherein an outer surface of the cylinder head cover is provided with a protrusion protruding from the outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002123749A JP3977680B2 (en) | 2002-04-25 | 2002-04-25 | Resin cylinder head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002123749A JP3977680B2 (en) | 2002-04-25 | 2002-04-25 | Resin cylinder head cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003314360A true JP2003314360A (en) | 2003-11-06 |
| JP3977680B2 JP3977680B2 (en) | 2007-09-19 |
Family
ID=29538955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002123749A Expired - Fee Related JP3977680B2 (en) | 2002-04-25 | 2002-04-25 | Resin cylinder head cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3977680B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7162986B2 (en) * | 2004-11-24 | 2007-01-16 | Toyota Jidosha Kabushiki Kaisha | Cylinder head cover |
| CN102251870A (en) * | 2010-05-17 | 2011-11-23 | 通用汽车环球科技运作有限责任公司 | Engine camshaft cover with integrated oil passages for camshaft phaser actuation |
| WO2016068047A1 (en) * | 2014-10-29 | 2016-05-06 | 本田技研工業株式会社 | Head cover for vehicle internal combustion engine |
-
2002
- 2002-04-25 JP JP2002123749A patent/JP3977680B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7162986B2 (en) * | 2004-11-24 | 2007-01-16 | Toyota Jidosha Kabushiki Kaisha | Cylinder head cover |
| US7341033B2 (en) | 2004-11-24 | 2008-03-11 | Toyota Jidosha Kabushiki Kaisha | Cylinder head cover |
| CN100460658C (en) * | 2004-11-24 | 2009-02-11 | 丰田自动车株式会社 | cylinder head cover |
| CN102251870A (en) * | 2010-05-17 | 2011-11-23 | 通用汽车环球科技运作有限责任公司 | Engine camshaft cover with integrated oil passages for camshaft phaser actuation |
| WO2016068047A1 (en) * | 2014-10-29 | 2016-05-06 | 本田技研工業株式会社 | Head cover for vehicle internal combustion engine |
| JPWO2016068047A1 (en) * | 2014-10-29 | 2017-08-31 | 本田技研工業株式会社 | Head cover of internal combustion engine for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3977680B2 (en) | 2007-09-19 |
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