JP3393929B2 - Valve lifter for internal combustion engine - Google Patents
Valve lifter for internal combustion engineInfo
- Publication number
- JP3393929B2 JP3393929B2 JP15988294A JP15988294A JP3393929B2 JP 3393929 B2 JP3393929 B2 JP 3393929B2 JP 15988294 A JP15988294 A JP 15988294A JP 15988294 A JP15988294 A JP 15988294A JP 3393929 B2 JP3393929 B2 JP 3393929B2
- Authority
- JP
- Japan
- Prior art keywords
- valve lifter
- top plate
- valve
- skirt
- combustion engine
- 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 - Fee Related
Links
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、バルブステムとカムと
の間に介装されて、弁間隙を調整する内燃機関用バルブ
リフターに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve lifter for an internal combustion engine which is interposed between a valve stem and a cam to adjust a valve clearance.
【０００２】[0002]
【従来の技術】図１２は、この種のバルブリフターを用
いた動弁機構を示し、カムｂとバルブステムｃ上端部と
の間には、円盤状の天板部ａ1 に円筒状のスカート部ａ
2 が一体に形成されたカップ型のバルブリフター本体ａ
が介装されている。このバルブリフター本体ａとバルブ
ステムｃとは、圧縮コイルスプリングｄによってバルブ
が常に閉弁する方向（矢印Ａ方向）に付勢された状態に
保持されており、カムｂがリフター本体ａを下方に押し
下げ、これによってリフター本体ａとバルブがシリンダ
ｅに沿って摺動することで開弁する。即ち、カムｂの回
転に伴ってバルブリフター本体ａが昇降動作し、これに
よってバルブの開閉が行われる構造となっている。2. Description of the Related Art FIG. 12 shows a valve operating mechanism using a valve lifter of this type, in which a disc-shaped top plate a 1 has a cylindrical skirt between a cam b and an upper end of a valve stem c. Part a
A cup-shaped valve lifter body a in which 2 is integrally formed
Is installed. The valve lifter main body a and the valve stem c are held by a compression coil spring d in a state in which the valve is always closed in the direction of closing the valve (direction of arrow A), and the cam b moves the lifter main body a downward. The lifter main body a and the valve are slid along the cylinder e, thereby opening the valve. That is, the valve lifter main body a moves up and down with the rotation of the cam b, so that the valve is opened and closed.
【０００３】[0003]
【発明の解決しようとする課題】しかし従来のバルブリ
フター本体ａの板厚は、天板部ａ1 ではカムｂの衝撃に
耐え得るように、またスカート部ａ2 では摺動時に変形
しないように、それぞれ十分な厚さに形成されている。
このためバルブリフター本体ａの重量がかさみ、動弁機
構を作動させるために必要とするエネルギーもそれだけ
大きかった。However, the plate thickness of the conventional valve lifter main body a is such that the top plate portion a 1 can withstand the impact of the cam b and the skirt portion a 2 does not deform during sliding. , Each of which is formed with a sufficient thickness.
Therefore, the weight of the valve lifter main body a is heavy, and the energy required to operate the valve operating mechanism is also large.
【０００４】また実開昭６２−１８３０４号には、図１
３に示すように、バルブリフター本体ａをスタンピング
により成形することで、スカート部ａ2 を天板部ａ1 よ
り薄くするとともに、スカート部ａ2 の強度を確保する
ためにスカート部ａ2 の開口端に内フランジ部ａ3 を設
けるという技術が開示されている。しかし、この第２の
従来技術では、スカート部ａ2 の薄肉化は達成できるも
のの、天板部ａ1 の厚さは従来構造と同様に厚く、重量
の軽減という点においてはそれほど効果がない。さらに
スカート部ａ2 の開口端に内フランジ部ａ3 を設けてス
カート部ａ2 を補強する必要があるが、スタンピング工
程内において内フランジ部ａ3 を成形することは困難
で、フランジ部ａ3 を形成する別工程が必要で、それだ
け製造工程が煩雑となる。In Japanese Utility Model Laid-Open No. 62-18304, FIG.
As shown in 3, the valve lifter body a by molding by stamping, with a skirt portion a 2 thinner than the top plate a 1, the skirt portion a 2 in order to ensure the strength of the skirt portion a 2 opening A technique of providing an inner flange portion a 3 at the end is disclosed. However, in the second conventional technique, although the skirt portion a 2 can be thinned, the top plate portion a 1 is as thick as the conventional structure and is not so effective in reducing the weight. It is necessary to reinforce the inner flange portion a 3 skirt portion a 2 further provided on the open end of the skirt portion a 2, it is difficult to mold the inner flange portion a 3 in the stamping process, the flange portion a 3 Requires a separate step for forming the structure, which complicates the manufacturing process.
【０００５】本発明は前記従来技術の問題点に鑑みなさ
れたもので、その第１の目的は、バルブリフター本体全
体の板厚を薄肉化することで重量を軽減できる内燃機関
用バルブリフターを提供することであり、第２の目的
は、前記第１の目的に加えて、製造の容易な内燃機関用
バルブリフターを提供することにある。The present invention has been made in view of the above problems of the prior art. A first object of the present invention is to provide a valve lifter for an internal combustion engine which can reduce the weight by reducing the plate thickness of the entire valve lifter body. A second object is to provide a valve lifter for an internal combustion engine which is easy to manufacture, in addition to the first object.
【０００６】[0006]
【課題を解決するための手段】前記第１の目的を達成す
るために、請求項１に係る内燃機関用バルブリフターに
おいては、カムに摺接する円盤状の天板部の外周縁にシ
リンダに摺接する円筒状のスカート部が連成されたカッ
プ型バルブリフター本体を備え、カムとバルブステム上
端部間に介装されて弁間隙を調整する内燃機関用バルブ
リフターにおいて、前記天板部の裏面中央には厚肉のバ
ルブステム当接部が形成されるとともに、前記天板部に
は裏面側に膨出して頂面側が窪んだ複数のリブが設けら
れたバルブリフターであって、前記天板部の中央部寄り
には、放射状に延びて天板部の剛性強度を高める第１の
補強リブを設け、前記天板部の外周縁部からスカート部
にまたがる位置には、放射状に延びて天板部およびスカ
ート部の剛性強度を高める第２の補強リブを設けるよう
にしたものである。In order to achieve the first object, in the valve lifter for an internal combustion engine according to claim 1, a cylinder is slid on the outer peripheral edge of a disk-shaped top plate portion which is in sliding contact with a cam. A valve lifter for an internal combustion engine, comprising a cup-type valve lifter main body in which contacting cylindrical skirts are connected to each other, and which is interposed between a cam and an upper end of a valve stem to adjust a valve gap, in the center of the back surface of the top plate portion. The thick ba
The lube stem contact part is formed and the top plate part is
Is provided with a plurality of ribs that bulge on the back side and are depressed on the top side.
Valve lifter that is closer to the center of the top plate
Has a first radial extension to increase the rigidity of the top plate.
A reinforcing rib is provided so that the skirt portion extends from the outer peripheral edge of the top plate portion.
In the position that extends over the
Second reinforcing ribs are provided to increase the rigidity of the boot portion .
【０００７】請求項２では、請求項１記載の内燃機関用
バルブリフターにおいて、前記第１の補強リブと第２の
補強リブを周方向にずらして配置するようにしたもので
ある。According to a second aspect, in the valve lifter for an internal combustion engine according to the first aspect, the first reinforcing rib and the second reinforcing rib are provided.
The reinforcing ribs are arranged so as to be displaced in the circumferential direction .
【０００８】また前記第２の目的を達成するために、請
求項３に係わる内燃機関用バルブリフターにおいては、
請求項１又は２記載の内燃機関用バルブリフターにおい
て、バルブリフター本体をスタンピングにより成形する
ようにしたものである。In order to achieve the second object, in the valve lifter for an internal combustion engine according to claim 3,
The valve lifter for an internal combustion engine according to claim 1 or 2, wherein the valve lifter main body is formed by stamping.
【０００９】[0009]
【作用】天板部に設けられているリブが、板厚の薄い天
板部の剛性強度を高める。スカート部の板厚は、第２の
従来技術（図１３参照）におけるバルブリフター本体の
スカート部程は薄くできないものの、第１の従来技術
（図１２参照）におけるバルブリフター本体のスカート
部よりは薄肉化でき、しかも天板部およびスカート部の
双方を薄肉化できることから、バルブリフター本体の総
重量は、この第２の従来技術におけるバルブリフター本
体と同等か、それ以下となる。The ribs provided on the top plate enhance the rigidity of the thin top plate. The plate thickness of the skirt is not as thin as the skirt of the valve lifter body in the second conventional technology (see FIG. 13), but is thinner than the skirt of the valve lifter body in the first conventional technology (see FIG. 12). Since both the top plate portion and the skirt portion can be thinned, the total weight of the valve lifter main body is equal to or less than that of the valve lifter main body in the second prior art.
【００１０】特に、第１の補強リブは天板部の剛性強度
を高め、第２の補強リブは天板部およびスカート部の剛
性強度を高める。請求項３では、金属製薄板材をスタン
ピングによりカップ型に成形するとともに、このスタン
ピング工程内で補強リブも形成できる。In particular, the first reinforcing rib increases the rigidity of the top plate portion, and the second reinforcing rib increases the rigidity of the top plate portion and the skirt portion. According to the third aspect, the thin metal plate material is formed into a cup shape by stamping, and the reinforcing rib can be formed in the stamping step.
【００１１】[0011]
【実施例】次に、本発明の実施例を図面に基づいて説明
する。図１および図２は本発明の第１の実施例であるバ
ルブリフターを示すもので、図１は本発明の第１の実施
例であるバルブリフターの主要部であるバルブリフター
本体の平面図、図２は同リフター本体の縦断面図（図１
に示す線II−IIに沿う断面図）、図３は同バルブリフタ
ー本体をスタンピング成形する工程を説明する説明図で
ある。Embodiments of the present invention will now be described with reference to the drawings. 1 and 2 show a valve lifter which is a first embodiment of the present invention, and FIG. 1 is a plan view of a valve lifter main body which is a main part of the valve lifter which is a first embodiment of the present invention. Fig. 2 is a vertical cross-sectional view of the lifter body (Fig. 1
2 is a cross-sectional view taken along line II-II), and FIG. 3 is an explanatory view illustrating a step of stamping-molding the valve lifter body.
【００１２】これらの図において、バルブリフター本体
１０Ａは、頂面がカムｂ（図１２参照）に当接し、裏面
がバルブステムｃ（図１２参照）の上端部に当接する円
盤状の天板１２と、この天板１２の外周縁からスカート
状に延出してシリンダｅ（図１２参照）に摺接するスカ
ート部１４とが一体化されたカップ型で、例えばスタン
ピング成形によってつくられている。またバルブリフタ
ー本体１０Ａの天板１２およびスカート部１４は、鍛造
で製造された鋼製の従来のバルブリフター本体に比べて
板厚が薄く形成され、即ち、従来のバルブリフター本体
と比べて、天板１２の板厚およびスカート部１４の板厚
が、図１２に示すバルブリフター本体ａの天板部ａ1 お
よびスカート部ａ2 の板厚よりも薄く形成されて、重量
も軽減されたものとなっている。In these figures, the valve lifter main body 10A has a disk-shaped top plate 12 whose top surface contacts the cam b (see FIG. 12) and whose back surface contacts the upper end of the valve stem c (see FIG. 12). And a skirt portion 14 that extends in a skirt shape from the outer peripheral edge of the top plate 12 and is in sliding contact with the cylinder e (see FIG. 12), is a cup type and is formed by, for example, stamping molding. Further, the top plate 12 and the skirt portion 14 of the valve lifter main body 10A are formed to have a smaller plate thickness than the conventional valve lifter main body made of steel manufactured by forging, that is, compared with the conventional valve lifter main body. The plate thickness of the plate 12 and the skirt part 14 are made thinner than the plate thicknesses of the top plate part a 1 and the skirt part a 2 of the valve lifter main body a shown in FIG. 12, and the weight is reduced. Has become.
【００１３】また天板１２の中央部裏面には、厚肉のバ
ルブステム当接部１５が形成されるとともに、このバル
ブステム当接部１５の周りには、周方向等分４箇所にお
いて、裏面側に膨出して頂面側が窪んだ放射状に延びる
第１の補強リブ１６が設けられている。補強リブ１６
は、図２に示されるように、天板中央部寄り程膨出量
（窪み量）が大きくされて、天板１２の剛性強度が高め
られた構造で、これによって天板１２が薄肉化されたこ
とによる強度不足が補われている。A thick valve stem abutting portion 15 is formed on the back surface of the central portion of the top plate 12, and the back surface is formed around the valve stem abutting portion 15 at four locations equally divided in the circumferential direction. A first reinforcing rib 16 is provided which bulges to the side and extends radially with the top surface side recessed. Reinforcing rib 16
As shown in FIG. 2, the top plate 12 has a structure in which the amount of bulging (the amount of depression) is increased toward the central portion of the top plate to increase the rigidity and strength of the top plate 12, whereby the top plate 12 is thinned. The lack of strength due to this has been compensated.
【００１４】また天板１２の外周縁部寄りには、周方向
に隣接する第１の補強リブ１６，１６間において、裏面
側に膨出して頂面側が窪んだ放射状に延びる第２の補強
リブ１８が設けられて、天板１２およびスカート部１４
の剛性強度が高められている。即ち、補強リブ１８は、
天板１２からスカート部１４にまたがって形成されると
ともに、天板外周縁部寄り程膨出量（窪み量）が大きく
されて、天板１２の強度を高めるとともに、スカート部
１４が薄肉化されたことによる強度不足を補うべく作用
する。Further, near the outer peripheral edge portion of the top plate 12, between the first reinforcing ribs 16 which are adjacent to each other in the circumferential direction, there is a second reinforcing rib which bulges toward the back surface side and is dented at the top surface side and extends radially. 18 is provided, and the top plate 12 and the skirt portion 14 are provided.
The rigidity strength of is improved. That is, the reinforcing rib 18 is
The top plate 12 is formed so as to extend over the skirt portion 14, and the amount of bulging (the amount of depression) is increased toward the outer peripheral edge of the top plate, increasing the strength of the top plate 12 and thinning the skirt portion 14. It acts to make up for the lack of strength due to this.
【００１５】またバルブリフター本体１０Ａを成形する
には、まず、所定形状に切り抜いた金属製薄板材を、ダ
イとパンチとを使って軸方向（Ｙ方向）にスタンピング
プレスして、図３（ａ）に示すように、概略カップ型に
成形する。次に他のダイとパンチとを使ってスタンピン
グプレスし、図３（ｂ）に示すように、全体の板厚を薄
くするとともに、天井部裏面側にバルブステム当接部１
５を肉寄せして成形する。次に、さらに他のパンチとダ
イとを使ってスタンピングプレスし、図３（ｃ）に示す
ように、天板に補強用リブ１６，１８を成形するととも
に、肉寄せしてバルブステム当接部１５を所定の突出高
さにする。最後に、仕上げ用のパンチとダイとを使って
スタンピングプレスし、形を整えることで、図１，２に
示すバルブリフター本体（成形品）１０Ａが出来上が
る。In order to mold the valve lifter main body 10A, first, a thin metal plate material cut into a predetermined shape is stamped and pressed in the axial direction (Y direction) using a die and a punch, and as shown in FIG. ) As shown in FIG. Next, stamping press is performed using another die and a punch to reduce the thickness of the entire plate as shown in FIG.
5 is pressed and molded. Next, as shown in FIG. 3 (c), stamping press is performed using still another punch and a die to form the reinforcing ribs 16 and 18 on the top plate, and at the same time, the ribs are brought close to each other and the valve stem abutting portion is pressed. 15 is set to a predetermined protruding height. Finally, the valve lifter main body (molded product) 10A shown in FIGS. 1 and 2 is completed by stamping and pressing using a finishing punch and die to adjust the shape.
【００１６】図４および図５は本発明の第２の実施例で
あるバルブリフターの要部であるバルブリフター本体を
示し、図４はバルブリフター本体の平面図、図５は同リ
フター本体の縦断面図（図４に示す線Ｖ−Ｖに沿う断面
図）である。この第２の実施例におけるバルブリフター
では、バルブリフター本体１０Ｂの天板１２に形成した
第１，第２の補強リブ１６，１８の本数を８本と多くし
たもので、補強リブの本数が多い分だけ、天板１２およ
びスカート部１４の剛性強度が高められている。4 and 5 show a valve lifter body which is a main part of a valve lifter according to a second embodiment of the present invention. FIG. 4 is a plan view of the valve lifter body, and FIG. 5 is a longitudinal section of the lifter body. FIG. 5 is a plan view (cross-sectional view taken along line VV shown in FIG. 4). In the valve lifter according to the second embodiment, the number of the first and second reinforcing ribs 16 and 18 formed on the top plate 12 of the valve lifter main body 10B is increased to eight, and the number of reinforcing ribs is large. The rigidity of the top plate 12 and the skirt portion 14 is increased accordingly.
【００１７】図６および図７は本発明の第３の実施例で
あるバルブリフターの要部であるバルブリフター本体を
示し、図６はバルブリフター本体の平面図、図７は同リ
フター本体の縦断面図（図６に示す線VII −VII に沿う
断面図）である。前記した２つの実施例では、天板１２
の中央部寄りに設けた第１の補強リブ１６によって天板
１２の強度不足を補い、天板１２の外周縁部寄りに設け
た第２の補強リブ１８によってスカート部１４の強度不
足を補っているが、このバルブリフター本体１０Ｃで
は、符号１５ａで示されるように、天板１２の板厚を厚
肉のバルブステム当接部１５位置から天板外周縁にかけ
て徐々に小さくなるように形成することで、天板１２の
強度不足を補っている。さらに天板１２とスカート部１
４とにまたがる位置に補強リブ（第２の補強リブ）２０
を設けることで、天板１２およびスカート部１４双方の
強度不足を補うようになっている。6 and 7 show a valve lifter main body which is a main part of a valve lifter according to a third embodiment of the present invention. FIG. 6 is a plan view of the valve lifter main body, and FIG. 7 is a vertical section of the lifter main body. FIG. 7 is a plan view (cross-sectional view taken along line VII-VII shown in FIG. 6). In the two embodiments described above, the top plate 12
Of the strength of the top plate 12 is compensated by the first reinforcement ribs 16 provided near the central portion of the top plate, and the strength of the skirt portion 14 is supplemented by the second reinforcement ribs 18 provided near the outer peripheral edge of the top plate 12. However, in this valve lifter main body 10C, as shown by the reference numeral 15a, the plate thickness of the top plate 12 should be gradually reduced from the position of the thick valve stem contact portion 15 to the outer peripheral edge of the top plate. Therefore, the insufficient strength of the top plate 12 is compensated. Top plate 12 and skirt 1
Reinforcing ribs (second reinforcing ribs) 20 at positions that straddle 4
Is provided, the insufficient strength of both the top plate 12 and the skirt portion 14 is compensated.
【００１８】図８および図９は本発明の第４の実施例で
あるバルブリフターの要部であるバルブリフター本体を
示し、図８はバルブリフター本体の平面図、図９は同リ
フター本体の縦断面図（図８に示す線IX−IXに沿う断面
図）である。この第４の実施例におけるバルブリフター
本体１０Ｄでは、厚肉のバルブステム当接部１５の周縁
近傍位置から天板外周縁近傍位置にわたって放射状に延
びる補強リブ（第１の補強リブ）２２が周方向等分８箇
所に設けられている。この補強リブ２２の膨出量（窪み
量）は深く、かつリブ延在方向に均一の形状に形成され
て、天板１２の剛性強度が前記した第１〜第３の実施例
より高くされている。8 and 9 show a valve lifter main body which is a main part of a valve lifter according to a fourth embodiment of the present invention. FIG. 8 is a plan view of the valve lifter main body, and FIG. 9 is a vertical section of the lifter main body. FIG. 9 is a plan view (cross-sectional view taken along the line IX-IX shown in FIG. 8). In the valve lifter main body 10D according to the fourth embodiment, the reinforcing ribs (first reinforcing ribs) 22 that extend radially from the position near the peripheral edge of the thick valve stem contact portion 15 to the position near the outer peripheral edge of the top plate are arranged in the circumferential direction. It is provided in 8 equal parts. The bulging amount (recess amount) of the reinforcing rib 22 is deep and is formed in a uniform shape in the rib extending direction so that the rigidity of the top plate 12 is higher than that of the first to third embodiments. There is.
【００１９】図１０及び図１１は、本発明の第５の実施
例であるバルブリフターの要部であるバルブリフター本
体を示し、図１０はバルブリフター本体の平面図、図１
１は同リフター本体の縦断面図（図１０に示す線XI−XI
に沿う断面図）である。前記した第１〜第４の実施例で
は、天板１２のバルブステム当接部１５に直接バルブス
テム上端部が当接する構造となっているが、本実施例で
は、カップ型のバルブリフター本体１０Ｅ内に油圧ユニ
ット３０が内蔵されて油圧式バルブリフターを構成する
ようになっている。10 and 11 show a valve lifter main body which is an essential part of a valve lifter according to a fifth embodiment of the present invention. FIG. 10 is a plan view of the valve lifter main body, FIG.
1 is a longitudinal sectional view of the lifter body (line XI-XI shown in FIG. 10)
FIG. In the above-described first to fourth embodiments, the valve stem abutting portion 15 of the top plate 12 has a structure in which the valve stem upper end portion directly abuts, but in the present embodiment, the cup type valve lifter main body 10E. The hydraulic unit 30 is built into the hydraulic valve lifter.
【００２０】即ち、バルブリフター本体１０Ｅ内に、有
底円筒型のボディ３１，ボディ３１の内側に収容された
有底円筒型のプランジャ３２，プランジャ３２の小孔３
６ｃを閉塞する方向に付勢されたチェックボール３３等
から構成された油圧ユニット３０が、スカート部１４の
内周に固定されたスリーブ３５によって支持されて、バ
ルブリフター本体１０Ｅ内に、シリンダに設けられたオ
イルギャラリ（図示せず）とスカート部１４に穿設され
た作動オイル供給孔３６ａを介し連通する副リザーバＲ
1，天板１２の裏面に形成されたリセス３６ｂを介して
副リザーバＲ1に連通する主リザーバＲ2およびチェック
ボール３３によって閉塞される小孔３６ｃを介し連通す
る高圧室Ｓが形成された構造となっている。That is, in the valve lifter body 10E, there is a bottomed cylindrical body 31, a bottomed cylindrical plunger 32 housed inside the body 31, and a small hole 3 of the plunger 32.
A hydraulic unit 30 composed of a check ball 33 or the like biased in the direction of closing 6c is supported by a sleeve 35 fixed to the inner circumference of the skirt portion 14, and provided in the cylinder inside the valve lifter main body 10E. A sub-reservoir R that communicates with the oil gallery (not shown) provided and a working oil supply hole 36a formed in the skirt portion 14
1 , a structure in which a high pressure chamber S is formed which communicates with a main reservoir R 2 communicating with a sub-reservoir R 1 via a recess 36b formed on the back surface of the top plate 12 and a small hole 36c closed by a check ball 33 Has become.
【００２１】天板１２およびスカート部１４は、前記第
１の実施例と同様、薄肉に形成されるとともに、天板１
２に第１，第２の補強リブ１６，１８が設けられた構造
で、天板１２およびスカート部１４の剛性強度が高めら
れている。スカート部１４の外周面には、オイルギャラ
リと作動オイル供給孔３６ａとを連通させる帯状のグル
ーブＧが周設されているが、スカート部１４を内側に屈
曲させることでこのグルーブＧが形成されている。この
グルーブＧを構成する内側屈曲部１９は、薄肉化された
スカート部１４の剛性強度を高めている。さらにスカー
ト部１４の内周面には、ボディ３１を支持する環状のス
リーブ３５がカシメや溶接等の適宜手段によって固定さ
れているが、このスリーブ３５もスカート部１４の剛性
強度を高めるべく作用する。The top plate 12 and the skirt portion 14 are formed thin as in the first embodiment, and the top plate 1
In the structure in which the first and second reinforcing ribs 16 and 18 are provided on the second structure 2, the rigidity of the top plate 12 and the skirt portion 14 is increased. On the outer peripheral surface of the skirt portion 14, a band-shaped groove G that connects the oil gallery and the working oil supply hole 36a is provided, but the groove G is formed by bending the skirt portion 14 inward. There is. The inner bent portion 19 forming the groove G enhances the rigidity of the thinned skirt portion 14. Further, an annular sleeve 35 that supports the body 31 is fixed to the inner peripheral surface of the skirt portion 14 by appropriate means such as caulking or welding. This sleeve 35 also acts to increase the rigidity strength of the skirt portion 14. .
【００２２】[0022]
【発明の効果】以上の説明から明らかなように、請求項
１に係る内燃機関用バルブリフターによれば、天板部に
設けられているリブによって板厚の薄い天板部の強度不
足が補われるので、強度を低下させることなく特に天板
部を薄肉化することができ、従ってバルブリフター本体
を従来のものに比べて軽量化でき、動弁機構に必要とさ
れるエネルギーも少なくてすむ。As is apparent from the above description, according to the valve lifter for an internal combustion engine according to the first aspect, the ribs provided on the top plate compensate for the insufficient strength of the thin top plate. Therefore, the top plate portion can be made thinner without lowering the strength, and therefore the valve lifter main body can be made lighter than the conventional one, and the energy required for the valve operating mechanism can be reduced.
【００２３】また、天板部に設けられている第１の補強
リブによって板厚の薄い天板部の強度不足が補われ、天
板部外周縁部からスカート部にかけて設けられている第
２の補強リブによって板厚の薄い天板部およびスカート
部の強度不足が補われるので、特に天板部に第１，第２
の補強リブを設けた場合には、バルブリフター本体全体
を薄肉化でき、従って著しい軽量化，省エネルギー化が
達成できる。 Further, insufficient strength of the thin top plate portion of the plate thickness is compensated by the first reinforcing rib provided on the top plate, the top plate outer periphery a second provided toward the skirt portion Since the reinforcing ribs compensate for the insufficient strength of the thin top plate and the skirt, the top plate and
If the reinforcing ribs are provided, the entire valve lifter main body can be made thin, and therefore, significant weight reduction and energy saving can be achieved.
【００２４】請求項３では、金属製薄板材をスタンピン
グによりカップ型に成形するとともに、このスタンピン
グ工程内で天板に補強リブを形成できるので、スタンピ
ングによってバルブリフター本体を製造することは鍛造
や切削や鋳造に比べると製造が非常に簡単となり、それ
だけバルブリフターを安価に提供できる。According to the third aspect of the present invention, since the metal thin plate material is formed into a cup shape by stamping and the reinforcing ribs can be formed on the top plate in the stamping process, it is forging or cutting to manufacture the valve lifter main body by stamping. It is much easier to manufacture than casting and casting, and the valve lifter can be provided at a lower cost.
【図１】本発明の第１の実施例であるバルブリフター本
体の平面図FIG. 1 is a plan view of a valve lifter body that is a first embodiment of the present invention.
【図２】同バルブリフター本体の縦断面図（図１に示す
線II−IIに沿う断面図）FIG. 2 is a vertical sectional view of the valve lifter body (a sectional view taken along line II-II shown in FIG. 1).
【図３】同バルブリフター本体を成形するスタンピング
工程の説明図FIG. 3 is an explanatory view of a stamping process for molding the valve lifter body.
【図４】本発明の第２の実施例であるバルブリフター本
体の平面図FIG. 4 is a plan view of a valve lifter body that is a second embodiment of the present invention.
【図５】同バルブリフター本体の縦断面図（図４に示す
線Ｖ−Ｖに沿う断面図）FIG. 5 is a vertical cross-sectional view of the valve lifter body (cross-sectional view taken along the line VV shown in FIG. 4).
【図６】本発明の第３の実施例であるバルブリフター本
体の平面図FIG. 6 is a plan view of a valve lifter body that is a third embodiment of the present invention.
【図７】同バルブリフター本体の縦断面図（図６に示す
線VII −VII に沿う断面図）FIG. 7 is a vertical sectional view of the valve lifter body (a sectional view taken along line VII-VII shown in FIG. 6).
【図８】本発明の第４の実施例であるバルブリフター本
体の平面図FIG. 8 is a plan view of a valve lifter body which is a fourth embodiment of the present invention.
【図９】同バルブリフター本体の縦断面図（図８に示す
線IX−IXに沿う断面図）FIG. 9 is a vertical sectional view of the valve lifter body (a sectional view taken along line IX-IX shown in FIG. 8).
【図１０】本発明の第５の実施例であるバルブリフター
本体の平面図FIG. 10 is a plan view of a valve lifter body which is a fifth embodiment of the present invention.
【図１１】同バルブリフター本体の縦断面図（図１０に
示す線XI−XIに沿う断面図）FIG. 11 is a vertical sectional view of the valve lifter body (a sectional view taken along line XI-XI shown in FIG. 10).
【図１２】従来のバルブリフターを組付けた動弁機構の
縦断面図FIG. 12 is a vertical cross-sectional view of a valve mechanism including a conventional valve lifter.
【図１３】従来の他のバルブリフター本体の縦断面図FIG. 13 is a vertical sectional view of another conventional valve lifter body.
ｂ カム ｃ バルブステム １０Ａ〜１０Ｅ バルブリフター本体 １２ 天板 １４ スカート部 １６，２２ 第１の補強リブ １８，２０ 第２の補強リブ ３０ 油圧ユニット b cam c Valve stem 10A to 10E Valve lifter body 12 Top plate 14 Skirt 16,22 First reinforcing rib 18,20 Second reinforcement rib 30 hydraulic unit
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F01L 1/14 Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) F01L 1/14
Claims (3)
にシリンダに摺接する円筒状のスカート部が連成された
カップ型バルブリフター本体を備え、カムとバルブステ
ム上端部間に介装されて弁間隙を調整する内燃機関用バ
ルブリフターにおいて、前記天板部の裏面中央には厚肉のバルブステム当接部が
形成されるとともに、前記天板部には裏面側に膨出して
頂面側が窪んだ複数のリブが設けられたバルブリフター
であって、 前記天板部の中央部寄りには、放射状に延びて天板部の
剛性強度を高める第１の補強リブが設けられ、前記天板
部の外周縁部からスカート部にまたがる位置には、放射
状に延びて天板部およびスカート部の剛性強度を高める
第２の補強リブが設けられた ことを特徴とする内燃機関
用バルブリフター。1. A cup-type valve lifter main body in which a cylindrical skirt portion slidably contacting a cylinder is connected to an outer peripheral edge of a disk-shaped top plate portion slidably contacting a cam, and is interposed between the cam and an upper end portion of the valve stem. In a valve lifter for an internal combustion engine that is mounted to adjust the valve clearance, a thick valve stem contact portion is provided in the center of the back surface of the top plate portion.
It is formed and swells to the back side on the top plate part
Valve lifter with multiple ribs with concave top surface
And, in the vicinity of the central portion of the top plate portion, the
The top plate is provided with a first reinforcing rib for increasing rigidity and strength.
Radiation from the outer edge of the skirt to the skirt
-Shaped to increase the rigidity of the top plate and skirt
A valve lifter for an internal combustion engine, which is provided with a second reinforcing rib .
は、周方向にずらして配置されたことを特徴とする請求
項１記載の内燃機関用バルブリフター。2. The first reinforcing rib and the second reinforcing rib
The valve lifter for an internal combustion engine according to claim 1, wherein the valve shifters are arranged so as to be displaced in the circumferential direction .
により成形されたことを特徴とする請求項１又は２記載
の内燃機関用バルブリフター。3. The valve lifter for an internal combustion engine according to claim 1, wherein the valve lifter body is formed by stamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15988294A JP3393929B2 (en) | 1994-07-12 | 1994-07-12 | Valve lifter for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15988294A JP3393929B2 (en) | 1994-07-12 | 1994-07-12 | Valve lifter for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0828213A JPH0828213A (en) | 1996-01-30 |
| JP3393929B2 true JP3393929B2 (en) | 2003-04-07 |
Family
ID=15703258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15988294A Expired - Fee Related JP3393929B2 (en) | 1994-07-12 | 1994-07-12 | Valve lifter for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3393929B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53111235A (en) * | 1977-09-27 | 1978-09-28 | Sony Corp | Recording method for color video signal |
| JP2012184793A (en) * | 2011-03-04 | 2012-09-27 | Tgk Co Ltd | Expansion valve |
-
1994
- 1994-07-12 JP JP15988294A patent/JP3393929B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0828213A (en) | 1996-01-30 |
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