JPH0118823Y2 - - Google Patents
Info
- Publication number
- JPH0118823Y2 JPH0118823Y2 JP1983028829U JP2882983U JPH0118823Y2 JP H0118823 Y2 JPH0118823 Y2 JP H0118823Y2 JP 1983028829 U JP1983028829 U JP 1983028829U JP 2882983 U JP2882983 U JP 2882983U JP H0118823 Y2 JPH0118823 Y2 JP H0118823Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil pan
- flanges
- membrane vibration
- side wall
- stiffener
- 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.)
- Expired
Links
- 239000003351 stiffener Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 13
- 210000001015 abdomen Anatomy 0.000 claims description 3
- 239000012528 membrane Substances 0.000 description 28
- 230000000694 effects Effects 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案は自動車騒音の一つの音源であるオイル
パンの膜振動を低減させることを目的とした騒音
低減オイルパンに関するものである。[Detailed Description of the Invention] The present invention relates to a noise reduction oil pan whose purpose is to reduce membrane vibration of the oil pan, which is one of the sources of automobile noise.
オイルパンの膜振動は、エンジン本体の振動や
ピストンの上下動に起因するオイルパン内の圧力
変動が、フラツトで比較的広面積のオイルパン側
壁に伝わり、これが共振して発生する。このオイ
ルパンの膜振動を低減させるため、補強金属板を
前記オイルパン側壁に固着し、オイルパン側壁に
剛性を付与したものが提案されているが（例え
ば、実開昭55−28778号公報参照）、エンジンの高
速域（例えば3000r.p.m以上）においてはその補
強金属板自体が共振し逆効果になることが実験上
確められている。 Oil pan membrane vibration occurs when pressure fluctuations within the oil pan due to vibrations of the engine body or vertical movement of the piston are transmitted to the side wall of the oil pan, which is flat and has a relatively wide area, and this resonates. In order to reduce this membrane vibration of the oil pan, it has been proposed that a reinforcing metal plate is fixed to the side wall of the oil pan to give rigidity to the side wall of the oil pan (see, for example, Japanese Utility Model Application No. 55-28778). ), it has been experimentally confirmed that the reinforcing metal plate itself resonates in the high-speed range of the engine (for example, 3000 rpm or higher), resulting in an adverse effect.
又実開昭55−28779号公報に示されるように、
複数本の棒状補強部材をオイルパンの両側壁間に
掛け渡してオイルパンの膜振動を抑えるものも提
案されている。ところがこれによれば、複数本の
棒状補強部材を必要とするため、部品点数の増加
を招く上に、夫々の棒状補強部材を溶接などによ
つて前記両側壁に固着する作業が複雑になるとい
う問題が生ずる。又後述の如く前記膜振動を有効
に抑制する前記側壁上のポイントはある程度限定
されているが、これら複数のポイントにおいて棒
状補強部材の端部を前記側壁に固着することは、
構造上の制約、部品点数上の制約及び作業性の制
約によつて困難であり、膜振動低減効果を十分に
発揮することは難しい。 Also, as shown in Japanese Utility Model Publication No. 55-28779,
It has also been proposed to suppress membrane vibration of the oil pan by extending a plurality of rod-shaped reinforcing members between both side walls of the oil pan. However, according to this method, multiple rod-shaped reinforcing members are required, which not only increases the number of parts but also complicates the work of fixing each rod-shaped reinforcing member to the side walls by welding or the like. A problem arises. Furthermore, as will be described later, the points on the side wall that effectively suppress the membrane vibration are limited to some extent, but fixing the ends of the rod-shaped reinforcing members to the side wall at these multiple points is
This is difficult due to structural restrictions, restrictions on the number of parts, and restrictions on workability, and it is difficult to fully demonstrate the membrane vibration reduction effect.
本考案は上記困難点を克服し、構造が簡単で、
作業性も良く、膜振動低減効果を十分に発揮する
ことができる騒音低減オイルパンを提供すること
を目的とする。 The present invention overcomes the above difficulties, has a simple structure,
The purpose of the present invention is to provide a noise reduction oil pan that has good workability and can sufficiently exhibit membrane vibration reduction effects.
本考案は上記目的を達成するため、傾斜状に配
され下側の側壁がオイルに覆われるオイルパンに
おいて、両端にフランジ部を有すると共に両フラ
ンジ部の中間部を断面係数が大きく且つ平面部の
少ない形状に形成してなるステイフナーを、その
両フランジ部において夫々複数箇所のスポツト溶
接によつて、オイルパンの上側及び下側の側壁内
面に固着し、且つ前記両フランジ部の少くとも上
側のフランジ部を、前記上側の側壁の膜振動の複
数の腹を覆う大きさに形成したことを特徴とす
る。 In order to achieve the above object, the present invention provides an oil pan which is arranged in an inclined manner and whose lower side wall is covered with oil, has flanges at both ends, and the middle part of both flanges has a large section modulus and a flat part. A stiffener formed in a small shape is fixed to the inner surface of the upper and lower side walls of the oil pan by spot welding at a plurality of locations on both flanges thereof, and at least the upper flanges of both the flanges are fixed to the inner surfaces of the upper and lower side walls of the oil pan. It is characterized in that the portion is formed in a size that covers a plurality of antinodes of membrane vibration of the upper side wall.
以下本考案を図面に示す実施例に基き具体的に
説明する。 The present invention will be specifically described below based on embodiments shown in the drawings.
１は１枚の鋼板をプレスを用いた押圧成形によ
り所定形状に形成したステイフナーで、両端にフ
ランジ部２，３を有すると共に両フランジ部２，
３を連結する中間部４を〓形に押圧成形して、断
面係数が大きく且つ平面部の少ない形状としてい
る。前記中間部４のフランジ部２，３に接続する
部分４ａ，４ｂはフランジ部２，３側に拡開する
ように形成し、後記側壁５，６とステイフナー１
との間における振動伝播が円滑になされるように
構成している。 Reference numeral 1 denotes a stiffener made of a steel plate formed into a predetermined shape by pressure forming using a press, and has flange parts 2 and 3 at both ends.
The intermediate part 4 connecting the parts 3 is press-molded into a square shape to have a large section modulus and a small flat part. Portions 4a and 4b of the intermediate portion 4 connected to the flange portions 2 and 3 are formed to expand toward the flange portions 2 and 3, and are connected to the side walls 5 and 6 described later and the stiffener 1.
The structure is configured to ensure smooth vibration propagation between the two.
本実施例のオイルパンＡは第１図に示す如く傾
斜状に配され、且つ上部材７に下部材８を溶接し
てなるものである。このオイルパンＡにおいて、
膜振動が問題となるのは、下部材６における相対
向する側壁５，６であるが、下側に位置する側壁
（以下下側壁と称す）６はオイルパンＡ内のオイ
ルによつて覆われているため膜振動の発生が軽微
であるので、特に膜振動発生上問題となるのは上
側に位置する側壁（以下上側壁と称す）５であ
る。このことを考慮して前記ステイフナー１の両
フランジ部２，３の内上側に位置するフランジ部
（以下上フランジ部と称す）２の大きさを上側壁
５の膜振動の複数の腹、すなわち１次の腹、２次
の腹を覆いうる大きさに形成している。下側に位
置するフランジ部（以下下フランジ部と称す）３
は上フランジ部２に比較し小形に形成されてい
る。 The oil pan A of this embodiment is arranged in an inclined manner as shown in FIG. 1, and has a lower member 8 welded to an upper member 7. In this oil pan A,
Membrane vibration is a problem in the opposing side walls 5 and 6 of the lower member 6, but the lower side wall (hereinafter referred to as the lower wall) 6 is covered with oil in the oil pan A. Because of this, the occurrence of membrane vibration is slight, so the side wall 5 located on the upper side (hereinafter referred to as the upper side wall) is particularly problematic in terms of membrane vibration generation. In consideration of this, the size of the flange portion (hereinafter referred to as the upper flange portion) 2 located on the inner upper side of both flange portions 2 and 3 of the stiffener 1 is determined to be equal to the number of antinodes of the membrane vibration of the upper wall 5. It is formed to a size that can cover the next belly and the secondary belly. Flange part located on the lower side (hereinafter referred to as the lower flange part) 3
is formed smaller than the upper flange portion 2.
前記上フランジ部２及び下フランジ部３は
夫々、前記上側壁５の内面の略中央及び前記下側
壁６の内面の略中央に、複数箇所のスポツト溶接
（スポツト溶接点をａで示す。）によつて固着され
ている。 The upper flange portion 2 and the lower flange portion 3 are spot welded at a plurality of locations (spot welding points are indicated by a) approximately at the center of the inner surface of the upper wall 5 and approximately at the center of the inner surface of the lower wall 6, respectively. It is twisted and fixed.
上フランジ部２は、第３図に示す如く、３箇所
のスポツト溶接によつて上側壁５の内面に固着さ
れている。上側壁５の膜振動における１次の腹及
び２次の腹は、第３図にｐ及びｑ，ｑ，ｑ，ｑで
示す位置に表われることが実験で確かめられてお
り、理想的にはこれらすべてを覆う大きさに上フ
ランジ部２の大きさを定めると共に、前記膜振動
の腹ｐ，ｑ，ｑ，ｑ，ｑに一致する箇所にスポツ
ト溶接点ａ，ａ……を定めると、膜振動の低減効
果は最大である（本考案をこのように構成するこ
とも可能である。）が、スペース上の制約、作業
上の制約、コスト上の制約などにより、本実施例
においては、１次の腹ｐ及び２つの２次の腹ｑ，
ｑを覆いうるように上フランジ部２の大きさ、形
状を定めると共に、前記３箇所のスポツト溶接点
ａ，ａ，ａを前記腹ｐ，ｑ，ｑの近傍に定めてい
る。このように本実施例は上記理想的な場合に比
較して、膜振動の低減効果は若干劣るが、膜振動
の複数の腹ｐ，ｑ，ｑの振動を有効に抑制するよ
うに構成されているので、従来例に比較して格段
の膜振動の低減効果を有している。 As shown in FIG. 3, the upper flange portion 2 is fixed to the inner surface of the upper wall 5 by spot welding at three locations. It has been experimentally confirmed that the first-order antinode and the second-order antinode in the membrane vibration of the upper wall 5 appear at the positions indicated by p, q, q, q, q in FIG. If the size of the upper flange portion 2 is determined to cover all of these, and spot welding points a, a... are determined at locations corresponding to the antinodes p, q, q, q, q of the membrane vibration, the membrane The vibration reduction effect is maximum (it is also possible to configure the present invention in this way), but due to space constraints, work constraints, cost constraints, etc., in this embodiment, 1. the next antinode p and the two quadratic antinodes q,
The size and shape of the upper flange portion 2 are determined so as to be able to cover the points q, and the three spot welding points a, a, and a are determined near the points p, q, and q. As described above, the present embodiment has a slightly inferior effect of reducing membrane vibration compared to the above-mentioned ideal case, but is configured to effectively suppress the vibrations of the plurality of antinodes p, q, and q of membrane vibration. Therefore, it has a remarkable effect of reducing membrane vibration compared to the conventional example.
下フランジ部３は、第４図に示す如く、２箇所
のスポツト溶接によつて下側壁６の内面に固着さ
れている。 As shown in FIG. 4, the lower flange portion 3 is fixed to the inner surface of the lower wall 6 by spot welding at two locations.
本実施例においては、ステイフナー１がオイル
の波動を減衰させるバツフルプレートの役割をも
果している。従つて従来例においては一般に前後
１対のバツフルプレートが必要であつたものを、
本実施例では後側のバツフルプレートを省略した
構成とすることができ、前側のバツフルプレート
９のみを有している。尚、１０はオイルストレー
ナである。 In this embodiment, the stiffener 1 also plays the role of a buffle plate that dampens oil waves. Therefore, in the conventional example, generally a pair of buttful plates were required at the front and rear, but
In this embodiment, the configuration can be such that the buff-full plate on the rear side is omitted, and only the buff-full plate 9 on the front side is provided. In addition, 10 is an oil strainer.
本考案は上記実施例に示す外、種々の態様に構
成することができる。例えば上記実施例では、１
枚の鋼板をプレスによる押圧成形によつてステイ
フナー１を構成しているが、両フランジ部２，３
及び中間部４を夫々別体形成したものを溶接する
ことによつて一体化してステイフナー１を構成し
てもよく、この場合中間部４として金属管を用い
てもよい。尚、中間部４の断面形状は〓形、円形
に限らず、半円形、方形、或いはク字形など平板
状のものものに比較し、断面係数が大きく且つ平
面部の少ない形状ならば良いことはもちろんであ
る。 The present invention can be configured in various ways other than those shown in the above embodiments. For example, in the above embodiment, 1
The stiffener 1 is formed by pressing two steel plates, and both flange parts 2 and 3
The stiffener 1 may be constructed by welding the intermediate portions 4 and 4 separately, respectively, and welding them together to form the stiffener 1. In this case, the intermediate portion 4 may be a metal tube. Note that the cross-sectional shape of the intermediate portion 4 is not limited to a square shape or a circle, but it is preferable that it has a larger cross-sectional modulus and a smaller flat surface compared to a flat plate-like shape such as a semicircular, square, or dog-shaped shape. Of course.
本考案の傾斜状に配されたオイルパンは、ほぼ
全面がオイルに覆われて最も膜振動が発生しにく
い下側の側壁と、通常のオイルパンに比較して広
面積となりほぼ全面が空気中に露呈して最も膜振
動が発生し易い上側の側壁とをステイフナーで結
合することにより、上側の側壁の膜振動を低減で
き、併せて下側の側壁におけるわずかに発生する
膜振動をも低減できる。しかもステイフナーの上
側のフランジ部は前記上側の側壁の膜振動の複数
の腹を覆う大きさに形成しているので、上側の側
壁上のポイント（膜振動の複数の腹）を拘束する
ことができ、しかもステイフナーの両フランジ部
の中間部は断面係数が大きく且つ平面部が少ない
形状に形成され、前記フランジ部による膜振動抑
制効果を確実なものとすることができる結果、従
来例に比較し格段にオイルパンの側壁の膜振動を
低減させることができ、延いては前記膜振動に起
因する騒音を低減させることができる。しかもこ
の騒音の低減効果はエンジンの高速域においても
維持される。 The slanted oil pan of this invention has a lower side wall that is almost entirely covered with oil and where membrane vibration is least likely to occur, and a larger area compared to a normal oil pan so that almost the entire surface is exposed to air. By using a stiffener to connect the upper side wall, which is exposed to the upper side wall and where membrane vibration is most likely to occur, membrane vibration on the upper side wall can be reduced, and at the same time, membrane vibration that occurs slightly on the lower side wall can also be reduced. . Moreover, since the upper flange portion of the stiffener is formed in a size that covers the plurality of antinodes of the membrane vibration on the upper side wall, it is possible to restrain the points on the upper side wall (the plurality of antinodes of the membrane vibration). Moreover, the middle part of both flanges of the stiffener is formed in a shape with a large section modulus and few flat parts, and as a result, the membrane vibration suppressing effect of the flange parts can be ensured, which is much more effective than in the conventional example. The membrane vibration of the side wall of the oil pan can be reduced, and the noise caused by the membrane vibration can also be reduced. Furthermore, this noise reduction effect is maintained even in the high speed range of the engine.
又本考案によれば１本のステイフナーを用い、
且つその両フランジ部にスポツト溶接を施すこと
によるだけで上記効果を奏するオイルパンを構成
することができるので、実開昭55−28779号公報
に示されるものに比較し、部品点数を削減できる
と共に、ステイフナーの固着作業を能率的に行う
ことができる。 Also, according to the present invention, one stiffener is used,
In addition, since an oil pan that achieves the above effects can be constructed simply by spot welding both flanges, the number of parts can be reduced and , the stiffener fixing work can be performed efficiently.
図面は本考案の実施例を示し、第１図は中央縦
断側面図、第２図は第１図の−から見た一部
切欠矢視図、第３図は第１図の−線断面図、
第４図は第１図の−線断面図である。
１……ステイフナー、２，３……フランジ部、
４……中間部、５……上側の側壁、６……下側の
側壁、ａ……スポツト溶接点、ｐ，ｑ……膜振動
の腹。
The drawings show an embodiment of the present invention, and FIG. 1 is a central vertical sectional side view, FIG. 2 is a partially cutaway view taken from - in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line - in FIG. ,
FIG. 4 is a sectional view taken along the line -- in FIG. 1. 1... Stiffener, 2, 3... Flange part,
4... Middle part, 5... Upper side wall, 6... Lower side wall, a... Spot welding point, p, q... Antinode of membrane vibration.
Claims (1)
オイルパンにおいて、両端にフランジ部を有する
と共に両フランジ部の中間部を断面係数が大きく
且つ平面部の少ない形状に形成してなるステイフ
ナーを、その両フランジ部において夫々複数箇所
のスポツト溶接によつて、オイルパンの上側及び
下側の側壁内面に固着し、且つ前記両フランジ部
の少くとも上側のフランジ部を、前記上側の側壁
の膜振動の複数の腹を覆う大きさに形成したこと
を特徴とする騒音低減オイルパン。 In an oil pan which is arranged in an inclined manner and whose lower side wall is covered with oil, a stiffener is provided which has flanges at both ends and the middle part of both flanges is formed into a shape with a large section modulus and few flat parts. Both flanges are fixed to the inner surfaces of the upper and lower side walls of the oil pan by spot welding at a plurality of locations, respectively, and at least the upper flange portions of both flanges are fixed to the inner surfaces of the upper and lower side walls of the oil pan by spot welding at a plurality of locations. A noise reduction oil pan characterized by being formed to a size that covers multiple bellies of the oil pan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2882983U JPS59135352U (en) | 1983-02-28 | 1983-02-28 | noise reduction oil pan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2882983U JPS59135352U (en) | 1983-02-28 | 1983-02-28 | noise reduction oil pan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59135352U JPS59135352U (en) | 1984-09-10 |
| JPH0118823Y2 true JPH0118823Y2 (en) | 1989-06-01 |
Family
ID=30159709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2882983U Granted JPS59135352U (en) | 1983-02-28 | 1983-02-28 | noise reduction oil pan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59135352U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812612B2 (en) * | 1979-01-24 | 1983-03-09 | 日本電気株式会社 | Asynchronous signal arbiter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144832U (en) * | 1979-04-06 | 1980-10-17 | ||
| JPS5812612U (en) * | 1981-07-17 | 1983-01-26 | 日産自動車株式会社 | internal combustion engine oil pan |
-
1983
- 1983-02-28 JP JP2882983U patent/JPS59135352U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812612B2 (en) * | 1979-01-24 | 1983-03-09 | 日本電気株式会社 | Asynchronous signal arbiter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59135352U (en) | 1984-09-10 |
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