JPH0735614Y2 - Deep drawing press-formed product made of damping steel plate - Google Patents
Deep drawing press-formed product made of damping steel plateInfo
- Publication number
- JPH0735614Y2 JPH0735614Y2 JP1988050782U JP5078288U JPH0735614Y2 JP H0735614 Y2 JPH0735614 Y2 JP H0735614Y2 JP 1988050782 U JP1988050782 U JP 1988050782U JP 5078288 U JP5078288 U JP 5078288U JP H0735614 Y2 JPH0735614 Y2 JP H0735614Y2
- Authority
- JP
- Japan
- Prior art keywords
- recess
- wall
- steel plate
- wall portion
- damping steel
- 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 - Lifetime
Links
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】 (産業上の利用分野) 本考案は、制振鋼板製深絞りプレス成形品に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a deep-drawing press-formed product made of damping steel plate.
(従来の技術) 車両用エンジンの騒音を低減するために、2枚の鋼板間
に粘弾性高分子材の薄層を介在させた制振鋼板を深絞り
プレス成形したオイルパンが既に実用に供せられてい
る。(Prior Art) In order to reduce the noise of a vehicle engine, an oil pan made by deep-drawing a damping steel plate with a thin layer of viscoelastic polymer material between two steel plates has already been put into practical use. It is forced.
(考案が解決しようとする課題) 上記制振鋼板が十分な制振効果を発揮するためには、2
枚の鋼板とその間に介装された粘弾性高分子材の薄層と
の接着性が重要であり、プレス成形時に鋼板と粘弾性高
分子材との接着性が低下して剥離が生ずると、制振性能
が著しく低下する。(Problems to be solved by the invention) In order for the above-mentioned damping steel plate to exert a sufficient damping effect, 2
Adhesiveness between the thin steel sheet and the thin layer of the viscoelastic polymer material interposed therebetween is important, and when the adhesiveness between the steel sheet and the viscoelastic polymer material is reduced during press forming and peeling occurs, Vibration damping performance is significantly reduced.
制振鋼板を深絞りプレス成形して製造された車両用エン
ジンのオイルパンについてオイルパン各部の近接騒音を
調査したところ、プレス成形のためのしわ押えフランジ
に対して実質的に垂直な壁を有するオイル溜凹所の深さ
が大きく上記垂直壁部分の高さが或る限度を超えた場
合、制振効果が著しく低下することが判明した。これ
は、深絞りプレス加工によって、制振鋼板の2枚の鋼板
とその間に介装された粘弾性高分子材との接着性が損な
われることに基づくものと推測される。When the proximity noise of each part of the oil pan was investigated for the oil pan of the vehicle engine manufactured by deep-drawing press-molded vibration-damping steel plate, it has a wall that is substantially perpendicular to the wrinkle holding flange for press-forming. It has been found that when the depth of the oil reservoir recess is large and the height of the vertical wall portion exceeds a certain limit, the vibration damping effect is significantly reduced. It is presumed that this is based on the fact that the deep-drawing press work impairs the adhesiveness between the two damping steel plates and the viscoelastic polymer material interposed therebetween.
本考案は、上記事情に鑑みなされたもので、車両用エン
ジンのオイルパンのような制振鋼板製深絞りプレス成形
品における制振効果の低減を効果的に防止することを目
的とするものである。The present invention has been made in view of the above circumstances, and it is an object of the present invention to effectively prevent the reduction of the vibration damping effect in a deep-drawing press-formed product made of a vibration damping steel plate such as an oil pan of a vehicle engine. is there.
(課題を解決するための手段) 本考案は、上記目的を達成するために創案されたもの
で、しわ押えフランジに対し略垂直方向に延びた平面又
は緩やかな曲面からなる壁を有する深絞りされた凹所を
具え、かつ上記しわ押えフランジに適宜の間隔を存し多
数のボルト孔を穿設してなるものにおいて、上記ボルト
孔間における深絞りされた壁部分に凹所の外方に向かっ
て突出すると共に凹所底面付近まで延在した溝を設け、
上記溝の壁が、上記しわ押えフランジに垂直な面に対し
3°以上傾いた傾斜壁部と、同傾斜壁部の上方もしくは
下方の少なくとも一方に連設されて上記しわ押えフラン
ジに対し実質的に垂直な垂直壁部とを備えたことを特徴
とする制振鋼板製深絞りプレス成形品を要旨とするもの
である。(Means for Solving the Problems) The present invention was devised in order to achieve the above-mentioned object, and is deep-drawn with a wall having a flat surface or a gently curved surface extending substantially perpendicular to the wrinkle holding flange. In which the wrinkle holding flange is provided with a large number of bolt holes at appropriate intervals, and the deeply drawn wall portion between the bolt holes faces outward of the recess. And a groove that extends to near the bottom of the recess,
The groove wall is connected to an inclined wall portion inclined by 3 ° or more with respect to a plane perpendicular to the wrinkle holding flange and at least one of the upper side and the lower side of the inclined wall portion, and the groove wall substantially forms the wrinkle holding flange. The present invention is directed to a deep-drawing press-formed product made of a vibration-damping steel plate, which is characterized in that it has a vertical wall portion perpendicular to
(作用) 本考案によれば、略垂直方向に延びた平面又は緩やかな
曲面からなる垂直高さ60mm以上の壁を有する深絞りされ
た凹所を具え、かつしわ押えフランジに適宜の間隔を存
して多数のボルト孔を設けたプレス成形品において、上
記ボルト孔間における深絞りされた壁部分に、凹所の外
方に向って突出すると共にフランジ面から凹所底面まで
延在した溝が設けられる。上記溝を設けることによって
溝の延在方向におけるプレス成形品の剛性が向上し、ま
た膜振動に関する制振性が構造的に改善される。また、
上記溝の凹所外方の壁に形成される上記フランジに対し
実質的に垂直な壁部分の高さを60mm以下とし、同垂直壁
部分以外の壁部分を、上記フランジに垂直な面に対し3
°以上傾いた傾斜壁とすることによって、制振鋼板を構
成する2枚の鋼板とその間に介装された粘弾性高分子材
との良好な接着性が確保される。更に上記溝を設けて垂
直壁内の平面部分を極力小さくすることによって、更に
上記2枚の鋼板とその間に介装された粘弾性高分子材と
の良好な接着性が一層確実に保持される。(Operation) According to the present invention, a deeply drawn recess having a wall with a vertical height of 60 mm or more, which is a flat surface extending in a substantially vertical direction or a gentle curved surface, is provided, and the wrinkle holding flange has an appropriate interval. In a press-formed product provided with a large number of bolt holes, a groove that extends from the flange surface to the bottom surface of the recess while projecting outward of the recess is formed in the deeply drawn wall portion between the bolt holes. It is provided. By providing the groove, the rigidity of the press-formed product in the extending direction of the groove is improved, and the vibration damping property related to the membrane vibration is structurally improved. Also,
The height of the wall portion substantially perpendicular to the flange formed on the outer wall of the recess of the groove is 60 mm or less, and the wall portion other than the vertical wall portion is a surface perpendicular to the flange. Three
By forming the inclined wall inclined at an angle of at least °, good adhesion between the two steel plates forming the vibration damping steel plate and the viscoelastic polymer material interposed therebetween is secured. Further, by providing the groove to minimize the plane portion in the vertical wall, the good adhesiveness between the two steel plates and the viscoelastic polymer material interposed therebetween can be more surely maintained. .
(実施例) 以下本考案の実施例を添付図面について具体的に説明す
る。先づ、第1図ないし第3図に示した本考案の実施例
において、図中符号10は総括的に車両用エンジンのオイ
ルパンを示し、12は同オイルパンの上端周縁部に形成さ
れたしわ押えフランジ、14は深絞りプレス成形されたオ
イル溜となる凹所である。上記フランジ12には、オイル
パン10をエンジンのクランクケース下端に取付けるため
の多数のボルト孔16が適宜の間隔を存して配設されてい
る。上記イル溜凹所14の左右の側壁18には、上記しわ押
えフランジ12に対し略垂直な平面又は曲率半径が極めて
大きい緩やかな曲面からなる壁部分18′(第2図に一点
鎖線で囲んで示されている)が包含され、図示の場合壁
部分18′の高さは60mm以上の任意の高さaである。ま
た、オイル溜凹所14の後壁20にも同様に、しわ押えフラ
ンジ12に対し略垂直な平面又は曲面からなる壁部分20′
が含まれ、図示の場合壁部分20′の高さは上記と同じa
である。(Embodiment) An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. First, in the embodiment of the present invention shown in FIGS. 1 to 3, reference numeral 10 generally designates an oil pan of a vehicle engine, and 12 is formed on the upper end peripheral portion of the oil pan. The wrinkle holding flange 14 is a recess that serves as an oil reservoir formed by deep drawing press molding. The flange 12 is provided with a large number of bolt holes 16 for attaching the oil pan 10 to the lower end of the crankcase of the engine at appropriate intervals. The left and right side walls 18 of the ile accommodating recess 14 have a wall portion 18 '(a plane substantially perpendicular to the wrinkle holding flange 12 or a gently curved surface having an extremely large radius of curvature, which is surrounded by a dashed line in FIG. 2). (As shown), and in the case shown the height of the wall portion 18 'is any height a of 60 mm or more. Further, similarly to the rear wall 20 of the oil reservoir recess 14, a wall portion 20 'composed of a flat surface or a curved surface substantially perpendicular to the wrinkle holding flange 12 is also provided.
In the illustrated case, the height of the wall portion 20 'is the same as above.
Is.
上記側壁の壁部分18′および後壁の壁部分20′に、上記
ボルト孔16相互間において凹所14の中心から外方に向っ
て突出すると共にフランジ12から凹所底面付近まで延在
した縦方向の溝22が設けられている。溝22の底面に相当
する凹所外方の壁22′は、第1図のX−X線及び(又
は)Y−Y線に沿う断面図である第3図に示されている
ように、しわ押えフランジ12に対し実質的に垂直であっ
て夫々高さb及びcの垂直壁部分24及び26と、しわ押え
フランジ12に垂直な面に対し角度θをなす傾斜壁28とか
ら形成されている。そして上記垂直壁部分24及び26の高
さb及びcは夫々60mm以下に設定され、また傾斜壁28の
上記傾斜角θは3°以上に設定されている。A vertical portion extending outward from the center of the recess 14 between the bolt holes 16 and extending from the flange 12 to the bottom of the recess on the side wall portion 18 'and the rear wall portion 20'. Directional grooves 22 are provided. The outer wall 22 'of the recess corresponding to the bottom surface of the groove 22 is, as shown in FIG. 3, which is a sectional view taken along line XX and / or YY of FIG. Formed by vertical wall portions 24 and 26 substantially perpendicular to the wrinkle holding flange 12 and having heights b and c, respectively, and an inclined wall 28 forming an angle θ with respect to a plane perpendicular to the wrinkle holding flange 12. There is. The heights b and c of the vertical wall portions 24 and 26 are set to 60 mm or less, respectively, and the inclination angle θ of the inclined wall 28 is set to 3 ° or more.
上記垂直壁部分24及び26の高さを夫々60mm以下とし、ま
た傾斜壁28の傾斜角θを3°以上とした理由を、第4図
ないし第7図について説明する。先づ、第4図は2枚の
薄い鋼板30a及び30bと両鋼板間に介装された粘弾性高分
子材30cとからなる制振鋼板30の制振性能を超音波透過
法によって調べる装置の概要を示したものである。同装
置は、ドライコンタクト方式の超音波探傷器32の探触子
34a,34bを制振鋼板30の両側面に当接させて、一方の探
触子34aにより制振鋼板30にインパルス入力を与え、他
方の探触子34bの受信波即ち透過強さを検知することに
よって、上記粘弾性高分子材30cと鋼板30a及び30bとの
接着性から制振性能を判定するものである。上記超音波
の透過強さGを縦軸にとり、時間Tを横軸にとって示し
た第6図において、最大透過強さが8〜10の領域Aは接
着良好、最大透過強さが2以上8未満の領域Bは接着や
や不良、最大透過強さが2未満の領域Cは接着不良と判
断される。The reason why the heights of the vertical wall portions 24 and 26 are set to 60 mm or less and the inclination angle θ of the inclined wall 28 is set to 3 ° or more will be described with reference to FIGS. 4 to 7. First, FIG. 4 shows an apparatus for investigating the damping performance of a damping steel plate 30 composed of two thin steel plates 30a and 30b and a viscoelastic polymer material 30c interposed between the two steel plates by an ultrasonic transmission method. This is an overview. This device is a probe for the dry contact type ultrasonic flaw detector 32.
34a and 34b are brought into contact with both side surfaces of the vibration damping steel plate 30, an impulse input is applied to the vibration damping steel plate 30 by one probe 34a, and the received wave, that is, the transmission intensity of the other probe 34b is detected. Thus, the vibration damping performance is judged from the adhesiveness between the viscoelastic polymer material 30c and the steel plates 30a and 30b. In FIG. 6 in which the transmission strength G of the ultrasonic wave is plotted on the ordinate and the time T is plotted on the abscissa, the region A having the maximum transmission strength of 8 to 10 has good adhesion, and the maximum transmission strength is 2 or more and less than 8 It is determined that the region B is slightly defective in adhesion, and the region C in which the maximum transmission strength is less than 2 is defective in adhesion.
上記超音波透過法により、制振鋼板製深絞りプレス成形
品の種々の垂直高さHを有する垂直壁部分上の複数の測
定点において透過強さGを測定し、垂直高さHと透過強
さGとの関係を調査したところ、第6図に示されている
ように、垂直高さHが60mmを超えて増大すると接着やや
不良の領域Bに属する測定点が多く、60mm以下では殆ど
の測定点が接着良好の領域Aに属することが見出され、
この結果、上記垂直壁部分24及び26の垂直高さb及びc
は夫々60mm以下に設定されたものである。By the above ultrasonic transmission method, the transmission strength G is measured at a plurality of measurement points on the vertical wall portion having various vertical heights H of the deep-drawing press-formed product made of damping steel plate, and the vertical height H and the transmission strength G are measured. As shown in FIG. 6, when the vertical height H increases beyond 60 mm, there are many measurement points that belong to the region B where the adhesion is slightly poor, and below 60 mm, most of the measurement points belong to the region B. It was found that the measurement point belongs to area A with good adhesion,
This results in vertical heights b and c of the vertical wall portions 24 and 26.
Are set to 60 mm or less, respectively.
また、同様にして傾斜壁28の傾斜角θに関して、角度θ
と透過強さGとの関係を調査したところ、第7図に示さ
れているように、θが3°未満では、相当数の測定点が
接着やや不良の領域Bに属するが、θ≧3°の場合殆ど
の測定点が領域Aに属することが判明した。この結果、
上記傾斜壁28の傾斜角θは3°以上に設定されたもので
ある。Similarly, regarding the inclination angle θ of the inclined wall 28, the angle θ
As a result of investigating the relationship between the transmission strength G and the transmission strength G, as shown in FIG. 7, when θ is less than 3 °, a considerable number of measurement points belong to the region B where adhesion is slightly poor, but θ ≧ 3. It was found that most of the measurement points belonged to the area A in the case of °. As a result,
The inclination angle θ of the inclined wall 28 is set to 3 ° or more.
上述のようにオイルパン10の左右側壁及び後壁の略垂直
に近い壁部分18′及び20′のうち垂直壁部分24及び26の
高さb及びcを夫々60mm以下とし、またその他の壁部分
28を傾斜角θ≧3°の傾斜壁とすることによって、制振
鋼板36の深絞りによる制振性能の低下を効果的に防止す
ることができたのである。As described above, the heights b and c of the vertical wall portions 24 and 26 of the left and right side walls of the oil pan 10 and the wall portions 18 'and 20' of the rear wall which are nearly vertical are 60 mm or less, respectively, and other wall portions.
By making 28 an inclined wall with an inclination angle θ ≧ 3 °, it is possible to effectively prevent the deterioration of the vibration damping performance due to the deep drawing of the vibration damping steel plate 36.
また、深絞りプレス成形される凹所14の垂直高さaが60
mmを超える壁部分18′及び20′にフランジ12の面から凹
所底面付近まで縦に延在する溝22を設けることによっ
て、オイルパン10の上下方向の剛性が向上する。更に、
溝22を設けることによって壁部分18′及び20′の平面部
(緩い曲面を含む)の面積が小さく細分化されるので、
構造的に膜振動を抑止し得る利点があり、また同時に制
振鋼板の鋼板と粘弾性高分子材との剥離を防止し優れた
接着性を保持し、深絞りプレス加工にも拘らず制振効果
の制振性能を一層確実に保持し得る利点がある。Further, the vertical height a of the recess 14 formed by deep drawing is 60.
By providing the groove portions 22 extending vertically from the surface of the flange 12 to the vicinity of the bottom surface of the recess in the wall portions 18 'and 20' exceeding mm, the vertical rigidity of the oil pan 10 is improved. Furthermore,
By providing the groove 22, the area of the flat surface portion (including the gently curved surface) of the wall portions 18 'and 20' is subdivided into small areas.
It has the advantage of structurally suppressing the membrane vibration, and at the same time it prevents the separation of the vibration-damping steel plate from the viscoelastic polymer material and maintains excellent adhesion, and it suppresses vibration despite deep drawing press working. There is an advantage that the vibration damping performance of the effect can be more surely maintained.
なお、本考案は、例示した車両用エンジンのオイルパン
に限定されるものではなく、オイルパン以外の種々の深
絞りプレス成形した車両部品その他任意の制振鋼板製プ
レス成形品に広く適用し得るものである。The present invention is not limited to the oil pan of the vehicle engine illustrated above, but can be widely applied to various deep-draw press-formed vehicle parts other than the oil pan and other press-formed products made of damping steel plates. It is a thing.
(考案の効果) 叙上のように、本考案に係る制振鋼板製深絞りプレス成
形品は、しわ押えフランジに対し略垂直方向に延びた平
面又は緩やかな曲面からなる壁を有する深絞りされた凹
所を具え、かつ上記しわ押えフランジに適宜の間隔を存
し多数のボルト孔を穿設してなるものにおいて、上記ボ
ルト孔間における深絞りされた壁部分に凹所の外方に向
かって突出すると共に凹所底面付近まで延在した溝を設
け、上記溝の壁が、上記しわ押えフランジに垂直な面に
対し3°以上傾いた傾斜壁部と、同傾斜壁部の上方もし
くは下方の少なくとも一方に連設されて上記しわ押えフ
ランジに対し実質的に垂直な垂直壁部とを備えたことを
特徴とし、深絞りプレス加工による制振鋼板の性能低減
を効果的に低減し得る効果を奏するものである。(Effects of the Invention) As described above, the deep-drawing press-formed product made of the damping steel plate according to the present invention is deep-drawn having a wall having a flat surface or a gently curved surface extending substantially perpendicular to the wrinkle holding flange. In which the wrinkle holding flange is provided with a large number of bolt holes at appropriate intervals, and the deeply drawn wall portion between the bolt holes faces outward of the recess. A groove extending to near the bottom of the recess and having the wall of the groove inclined by 3 ° or more with respect to the plane perpendicular to the wrinkle holding flange, and above or below the inclined wall. And a vertical wall portion that is substantially perpendicular to the wrinkle holding flange and that is connected to at least one of the above, and is capable of effectively reducing the performance reduction of the vibration damping steel plate by deep drawing press working. Is played.
第1図は本考案の第1実施例を示す平面図、第2図は第
1図の側面図、第3図は第1図のX−X線及び(又は)
Y−Y線に沿う断面図、第4図は制振鋼板の密着性を測
定する超音波透過測定装置の概略構成図、第5図は第4
図の装置による測定結果の判定要領を示す線図、第6図
は垂直壁の高さHと超音波透過強さGとの関係を示した
線図、第7図は傾斜壁の傾斜角θと超音波透過強さGと
の関係を示した線図である。 10……オイルパン、12……しわ押えフランジ、14……オ
イル溜凹所、16……ボルト孔、18……凹所の左右側壁、
20……凹所の後壁、22……溝、22′……溝の底壁。FIG. 1 is a plan view showing a first embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a XX line and / or of FIG.
Sectional drawing which follows the YY line, FIG. 4 is a schematic block diagram of the ultrasonic transmission measuring apparatus which measures the adhesiveness of a damping steel plate, FIG.
FIG. 6 is a diagram showing the judgment procedure of the measurement result by the apparatus of FIG. 6, FIG. 6 is a diagram showing the relationship between the height H of the vertical wall and the ultrasonic transmission intensity G, and FIG. 7 is the inclination angle θ of the inclined wall. It is a diagram showing the relationship between and ultrasonic transmission strength G. 10 …… Oil pan, 12 …… Wrinkle holding flange, 14 …… Oil reservoir recess, 16 …… Bolt hole, 18 …… Right and left side wall of recess,
20 ... recess rear wall, 22 ... groove, 22 '... groove bottom wall.
Claims (1)
た平面又は緩やかな曲面からなる壁を有する深絞りされ
た凹所を具え、かつ上記しわ押えフランジに適宜の間隔
を存し多数のボルト孔を穿設してなるものにおいて、上
記ボルト孔間における深絞りされた壁部分に凹所の外方
に向かって突出すると共に凹所底面付近まで延在した溝
を設け、上記溝の壁が、上記しわ押えフランジに垂直な
面に対し3°以上傾いた傾斜壁部と、同傾斜壁部の上方
もしくは下方の少なくとも一方に連設されて上記しわ押
えフランジに対し実質的に垂直な垂直壁部とを備えたこ
とを特徴とする制振鋼板製深絞りプレス成形品1. A deeply drawn recess having a flat or gently curved wall extending in a direction substantially perpendicular to the wrinkle holding flange, and the wrinkle holding flange having a large number of bolts at appropriate intervals. In what is provided with holes, a groove that projects toward the outside of the recess and extends to near the bottom of the recess is provided in the deeply drawn wall portion between the bolt holes, and the wall of the groove is An inclined wall portion inclined by 3 ° or more with respect to a plane perpendicular to the wrinkle retaining flange, and a vertical wall continuous with at least one of above and below the inclined wall portion and substantially perpendicular to the wrinkle retaining flange. Deep-drawing press-formed product made of vibration-damping steel plate characterized by having
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988050782U JPH0735614Y2 (en) | 1988-04-15 | 1988-04-15 | Deep drawing press-formed product made of damping steel plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988050782U JPH0735614Y2 (en) | 1988-04-15 | 1988-04-15 | Deep drawing press-formed product made of damping steel plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01153819U JPH01153819U (en) | 1989-10-23 |
JPH0735614Y2 true JPH0735614Y2 (en) | 1995-08-16 |
Family
ID=31276822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988050782U Expired - Lifetime JPH0735614Y2 (en) | 1988-04-15 | 1988-04-15 | Deep drawing press-formed product made of damping steel plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0735614Y2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60159853U (en) * | 1984-03-31 | 1985-10-24 | いすゞ自動車株式会社 | oil pan structure |
JPH0232852Y2 (en) * | 1985-07-25 | 1990-09-05 |
-
1988
- 1988-04-15 JP JP1988050782U patent/JPH0735614Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH01153819U (en) | 1989-10-23 |
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