JPH0346165Y2 - - Google Patents
Info
- Publication number
- JPH0346165Y2 JPH0346165Y2 JP12783685U JP12783685U JPH0346165Y2 JP H0346165 Y2 JPH0346165 Y2 JP H0346165Y2 JP 12783685 U JP12783685 U JP 12783685U JP 12783685 U JP12783685 U JP 12783685U JP H0346165 Y2 JPH0346165 Y2 JP H0346165Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- lifter
- spacer
- valve lifter
- chip
- 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
- 125000006850 spacer group Chemical group 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 22
- 229910000838 Al alloy Inorganic materials 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 229910001018 Cast iron Inorganic materials 0.000 claims description 10
- 239000003562 lightweight material Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 229910000760 Hardened steel Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910001234 light alloy Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、シリンダヘツドがアルミ合金から成
る内燃機関に用いられるバルブリフタに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a valve lifter used in an internal combustion engine whose cylinder head is made of an aluminum alloy.
［従来の技術］
内燃機関のシリンダヘツドは、従来鋳鉄製が多
かつたが、エンジンの軽量化、燃費向上、経済性
から、近年アルミ合金製が多くなつてきた。しか
し、直打式のバルブリフタには、依然焼入れ鋼、
鋳鉄製で一体型のものが主に用いられている。バ
ルブリフタを焼入れ鋼または鋳鉄製とした場合、
バルブリフタの重量が大となり、エンジンの出力
低下や燃費の悪化につながるという欠点がある。[Prior Art] Cylinder heads for internal combustion engines have traditionally been made of cast iron, but in recent years aluminum alloys have become more popular in order to reduce engine weight, improve fuel efficiency, and improve economy. However, direct-acting valve lifters still require hardened steel,
One-piece types made of cast iron are mainly used. If the valve lifter is made of hardened steel or cast iron,
The drawback is that the valve lifter is heavy, leading to a reduction in engine output and deterioration of fuel efficiency.
また、シリンダヘツドをアルミ合金製でバルブ
リフタを鋼または鋳鉄とした場合においては、ア
ルミ合金と鋼またはアルミ合金と鋳金の熱膨張差
により、シリンダヘツドの内筒孔とバルブリフタ
外径とのクリアランスが大きくなつて高温時には
騒音が、また、クリアランスが小さなつて低温時
にはステイツクが生じるおそれがある。 In addition, when the cylinder head is made of aluminum alloy and the valve lifter is made of steel or cast iron, the clearance between the inner cylindrical hole of the cylinder head and the outer diameter of the valve lifter becomes large due to the difference in thermal expansion between the aluminum alloy and steel, or between the aluminum alloy and cast metal. This may cause noise at high temperatures, and the small clearance may cause stagnation at low temperatures.
このような問題を解決するために、バルブリフ
タもアルミ合金製にしてシリンダヘツドとの熱膨
張差を無くする方法が有効である。このようなア
ルミ合金製バルブリフタまたは軽合金製もしくは
軽量材料製バルブリフタは、実開昭55−85508号
公報、実開昭56−83606公報、実開昭56−83607号
公報、実開昭56−83608号公報、特開昭58−
101204号公報、特開昭58−165508号公報、特公昭
47−50885号公報、特公昭48−1724号公報、特公
昭50−13425号公報に示されている。 In order to solve this problem, it is effective to make the valve lifter also made of aluminum alloy to eliminate the difference in thermal expansion with the cylinder head. Such an aluminum alloy valve lifter or a light alloy or lightweight material valve lifter is disclosed in Japanese Utility Model Application Publication No. 1985-85508, Japanese Utility Model Application Publication No. 1983-83606, Japanese Utility Model Application Publication No. 1987-83607, and Japanese Utility Model Application Publication No. 1987-83608. No. Publication, JP-A-58-
Publication No. 101204, Japanese Unexamined Patent Publication No. 165508/1983, Publication No. 101204
This method is disclosed in Japanese Patent Publication No. 47-50885, Japanese Patent Publication No. 1724-1982, and Japanese Patent Publication No. 13425-1987.
上記従来のもののいくつかは、バルブリフタ全
体をアルミ合金製にすると、カム当接面およびバ
ルブステム当接面に摩耗を生じ、実用に耐えない
ので、リフタ本体をアルミ合金、プラスチツク材
等の軽量材で構成し、カム当接面またはバルブス
テム当接面を部分的に耐摩耗性のある材料で構成
するように配慮したのを示している。 Some of the conventional valve lifters mentioned above are made of lightweight materials such as aluminum alloy or plastic, because if the entire valve lifter is made of aluminum alloy, it will cause wear on the cam contact surface and the valve stem contact surface, making it unusable. This shows that the cam contact surface or the valve stem contact surface is partially made of a wear-resistant material.
［考案が解決しようとする問題点］
しかし、従来の直打式バルブリフタは、その全
体が一体型に形成され構成されているものが主体
であるため、軽量化のため軽量材料で構成する
と、カム又はバルブステムとの当接面が摩擦摩耗
特性として実用性に乏しいものとなり、バルブリ
フタの各部を全て相手部材等に適合させることは
難しいという問題があつた。[Problems to be solved by the invention] However, since conventional direct-acting valve lifters are mainly constructed in one piece, if they are constructed from lightweight materials to reduce weight, the cam Alternatively, the friction and wear characteristics of the contact surface with the valve stem make it impractical, and there is a problem in that it is difficult to adapt all parts of the valve lifter to the mating member.
また、カム等との当接面を構成するスペーサと
シリンダヘツドへの摺接部を構成するリフタ本体
とが別体に構成されたものもあるが、従来構造で
はスペーサとリフタ本体が固定されており、固定
された状態であると、カムおよびバルブステムと
の当接状態によつてはバルブリフタ各部に無理な
抗力がかかり、バルブリフタのスリーブ部、カム
との当接面、バルブステムとの当接面に片当りが
生じ、耐摩耗性が低下するおそれがあるという問
題もあつた。 In addition, there are models in which the spacer that makes up the contact surface with the cam etc. and the lifter body that makes up the sliding contact with the cylinder head are constructed separately, but in the conventional structure, the spacer and the lifter body are fixed. If the valve lifter is in a fixed state, unreasonable resistance may be applied to each part of the valve lifter depending on the state of contact with the cam and valve stem, and the contact between the sleeve part of the valve lifter, the contact surface with the cam, and the valve stem may be There was also a problem that uneven contact occurred on the surface, which could reduce wear resistance.
本考案は、上記のような問題を解消するため
に、バルブリフタとアルミ合金製シリンダヘツド
との熱膨張差を小さくして、高温時の騒音、低温
時のステイツクを防止するとともに、この間の耐
摩耗性の向上をはかるという基本的要求を満たし
つつ、バルブリフタ各部の要求特性に応じた最適
な材料構成と各部の片当り等の防止をはかること
のできるバルブリフタの構造を提供することを目
的とする。 In order to solve the above problems, this invention reduces the difference in thermal expansion between the valve lifter and the aluminum alloy cylinder head to prevent noise at high temperatures and stagnation at low temperatures, and also improves wear resistance during this time. To provide a structure of a valve lifter capable of achieving an optimum material composition according to the required characteristics of each part of the valve lifter and preventing uneven contact of each part while satisfying the basic requirement of improving performance.
［問題点を解決するための手段］
この目的に沿う本考案のバルブリフタは、内燃
機関のシリンダヘツドの円筒孔に摺動自在に嵌挿
される直打式バルブリフタであつて、シリンダヘ
ツドの円筒孔に摺接するスリーブ部とそのスリー
ブ部から内方に延びる台座部とが一体的に形成さ
れたリフタ本体を軽量材料から構成し、表面にカ
ムとの当接面を有するスペーサをカムと摩擦摩耗
特性の良い材料から構成し、表面にバルブステム
との当接面を有するバルブチツプをバルブステム
と摩擦摩耗特性の良い材料から構成し、スペーサ
とバルブチツプとを溶接固定するとともに、リフ
タ本体に対し回転可能に設けたものから成る。す
なわち、各部の要求特性に応じてリフタ本体部、
スペーサ部、バルブチツプ部の三体構成をとつて
いる。[Means for Solving the Problems] The valve lifter of the present invention that meets this purpose is a direct-drive type valve lifter that is slidably inserted into the cylindrical hole of the cylinder head of an internal combustion engine. The lifter body, in which the sleeve part that slides in contact with the pedestal part that extends inward from the sleeve part, is integrally formed is made of a lightweight material, and the spacer, which has a surface that contacts the cam, is attached to the cam and the pedestal part that has friction and wear characteristics. The valve chip is made of a good material and has a contact surface with the valve stem on its surface, and the valve stem and the valve chip are made of a material with good friction and wear characteristics.The spacer and the valve chip are fixed by welding, and are rotatably provided with respect to the lifter body. consists of things. In other words, the lifter main body,
It has a three-piece structure including a spacer part and a valve chip part.
ここで、リフタ本体は、アルミ合金、繊維強化
プラスチツク等の軽量材料から成る。 Here, the lifter body is made of a lightweight material such as aluminum alloy or fiber reinforced plastic.
また、スペーサは、鋳鉄、鉄系焼結合金、焼入
れ鋼等の耐摩耗性材料から成る。 Further, the spacer is made of a wear-resistant material such as cast iron, iron-based sintered alloy, and hardened steel.
さらに、バルブチツプは、鋳鉄、鉄系焼結合
金、焼入れ鋼等の耐摩耗性材料から成る。 Further, the valve tip is made of a wear-resistant material such as cast iron, ferrous sintered alloy, hardened steel, or the like.
［作用］
上記のような構成を有するバルブリフタにおい
ては、バルブリフタは三体型の構造にされたの
で、バルブリフタ各部の材料は、相手部材に応じ
て摩擦摩耗特性の最適な材料に選択される。すな
わち、カムとの当接面を有するスペーサにはカム
と摩擦摩耗特性の良い材料が、バルブステムとの
当接面を有するバルブチツプにはバルブステムと
摩擦摩耗特性の良い材料が選択され、リフタ本体
には軽量材料が選択される。したがつて、バルブ
リフタ全体の軽量特性が活かされつつ、バルブリ
フタの耐摩耗性、耐久性が向上される。[Operation] In the valve lifter having the above-mentioned configuration, the valve lifter has a three-piece structure, so the material for each part of the valve lifter is selected to have optimal friction and wear characteristics depending on the mating member. In other words, a material that has good friction and wear characteristics with the cam is selected for the spacer that has a contact surface with the cam, a material that has good friction and wear characteristics with the valve stem for the valve chip that has a contact surface with the valve stem, and a material that has good friction and wear characteristics with the valve stem. Lightweight materials are selected. Therefore, the lightweight characteristics of the valve lifter as a whole are utilized, and the wear resistance and durability of the valve lifter are improved.
また、バルブチツプとスペーサとをリフタ本体
に対して回転可能に溶接固定したので、スペーサ
とバルブチツプが一体化された部材は、カムまた
はバルブステムとの当接状態に応じて回転し、バ
ルブリフタに加えられた力が無理な抗力がかから
ないように吸収され、バルブリフタのスリーブ
部、カムとの当接面、バルブステムとの当接面の
片当りが防止される。 In addition, since the valve chip and spacer are rotatably welded to the lifter body, the spacer and valve chip are integrated into a member that rotates depending on the state of contact with the cam or valve stem, and is not added to the valve lifter. The force is absorbed so that no unreasonable resistance is applied, and uneven contact between the sleeve portion of the valve lifter, the contact surface with the cam, and the contact surface with the valve stem is prevented.
［実施例］
以下に、本考案に係るバルブリフタの望ましい
実施例を図面を参照して説明する。[Embodiments] Hereinafter, preferred embodiments of the valve lifter according to the present invention will be described with reference to the drawings.
第１図は本考案のバルブリフタの代表的な実施
例を示している。バルブリフタ１は、リフタ本体
２とスペーサ３とバルブチツプ４から構成されて
いる。 FIG. 1 shows a typical embodiment of the valve lifter of the present invention. The valve lifter 1 is composed of a lifter body 2, a spacer 3, and a valve chip 4.
リフタ本体２は、円筒状のスリーブ部５と該ス
リーブ部５の上端から半径方向内方に向つて延び
るプレート状の台座部６とから構成され、これら
が一体的に形成されている。リフタ本体２のスリ
ーブ部５が、アルミ合金製シリンダヘツド（図示
略）の円筒孔に摺動自在に嵌挿される。リフタ本
体２は、アルミ合金製シリンダヘツドの材料と実
質的に同程度の熱膨張係数を有する軽量材料、た
とえばアルミ合金、または繊維強化プラスチツ
ク、もしくは軽合金を母材とする繊維強化メタル
から成る。 The lifter main body 2 is composed of a cylindrical sleeve portion 5 and a plate-shaped pedestal portion 6 extending radially inward from the upper end of the sleeve portion 5, which are integrally formed. The sleeve portion 5 of the lifter body 2 is slidably inserted into a cylindrical hole of an aluminum alloy cylinder head (not shown). The lifter body 2 is made of a lightweight material having a coefficient of thermal expansion substantially similar to that of the material of the aluminum alloy cylinder head, such as an aluminum alloy, a fiber reinforced plastic, or a fiber reinforced metal based on a light alloy.
スペーサ３は、表面にカムとの当接面７を有
し、実質的にリフタ本体２と同一径の円板状に形
成されている。スペーサ３は、カムと摩擦摩耗特
性の良い材料から構成され、スペーサ用材料とし
ては、たとえば、鋳鉄、焼結合金、焼入れ鋼が用
いられる。 The spacer 3 has a cam contact surface 7 on its surface, and is formed into a disk shape having substantially the same diameter as the lifter main body 2. The spacer 3 is made of a cam and a material with good friction and wear characteristics, and examples of the spacer material include cast iron, sintered alloy, and hardened steel.
リフタ本体２の台座部６には貫通孔８が形成さ
れており、この貫通孔８に表面にバルブステムと
の当接面９を有するバルブチツプ４が挿通されて
いる。バルブチツプ４は、本実施例では、断面形
状が上方に向かつて凸状に形成されており、貫通
孔８を挿通して下方に突出した部位が、台座６の
下面側に位置されている。バルブチツプ４は、バ
ルブステムと摩擦摩耗特性の良い材料から構成さ
れ、本材料としては、たとえば、鋳鉄、焼結合
金、焼入れ鋼が用いられる。 A through hole 8 is formed in the pedestal portion 6 of the lifter main body 2, and a valve chip 4 having a contact surface 9 with a valve stem on its surface is inserted into the through hole 8. In this embodiment, the valve chip 4 has an upwardly convex cross-sectional shape, and the portion that is inserted through the through hole 8 and projects downward is located on the lower surface side of the base 6. The valve tip 4 is made of a material having good friction and wear characteristics together with the valve stem, and examples of this material include cast iron, sintered alloy, and hardened steel.
スペーサ３とバルブチツプ４とは溶接固定によ
り、リフタ本体２に対し、上下方向に固定される
とともに貫通孔８を中心に回転自在に支持され
る。スペーサ３とバルブチツプ４との溶接固定
は、たとえば、次のように行なわれる。 The spacer 3 and the valve chip 4 are fixed by welding to the lifter main body 2 in the vertical direction and are supported rotatably around the through hole 8. The spacer 3 and the valve chip 4 are fixed by welding, for example, as follows.
第３図に示すように、スペーサ３とバルブチツ
プ４の接合面において、部材３，４のいずれか一
方に他方に向かつて突出するプロジエクシヨン４
ａを設け、コンデンサ式抵抗溶接機等の電気抵抗
加熱溶接機を用いて、圧力Ｆを加えながら通電
し、リフタ本体２材料の低融点合金（たとえばア
ルミニウム）に影響を与えることなく瞬時に溶接
を行なう。 As shown in FIG. 3, at the joining surface of the spacer 3 and the valve chip 4, a projection 4 protrudes toward either one of the members 3, 4 toward the other.
a, and using an electric resistance heating welding machine such as a capacitor type resistance welding machine, apply electricity while applying pressure F, and weld instantly without affecting the low melting point alloy (for example, aluminum) of the material of the lifter body 2. Let's do it.
スペーサ３とバルブチツプ４との溶接一体化部
材をリフタ本体２に対し回転可能とするために、
第４図に示すような寸法関係がとられる。すなわ
ち、あらかじめバルブチツプ４の凸部の高さtoを
リフタ本体２の台座部６の厚さｔより大きくして
おき（to＞ｔ）、溶接後にスペーサ３又はバルブ
チツプ４と台座部６との間に回転に必要な微小ク
リアランスが確保される。なお、回転不可に固定
する場合には、ｔ＞toとし、スペーサ３とバルブ
チツプ４の間に隙間を形成しておき、圧力を加え
て台座部６を押圧しながら接合するとよい。 In order to make the welded integral member of the spacer 3 and the valve tip 4 rotatable with respect to the lifter body 2,
The dimensional relationship shown in FIG. 4 is taken. That is, the height to of the convex portion of the valve chip 4 is made larger than the thickness t of the pedestal part 6 of the lifter body 2 in advance (to>t), and after welding, the height to of the convex part of the valve chip 4 is made larger than the thickness t of the pedestal part 6. The minute clearance necessary for rotation is secured. In addition, in the case of fixing the valve chip so that it cannot rotate, it is preferable to set t>to, form a gap between the spacer 3 and the valve chip 4, and apply pressure to press the pedestal part 6 while joining them.
第２図は本考案の別の実施例を示している。本
実施例においては、スペーサ１０側の断面形状が
凸状に形成されており、この突出部が貫通穴８を
挿通されている。バルブチツプ１１は、貫通穴８
の径より大径の円板状に形成されている。そし
て、スペーサ１０とバルブチツプ１１とは、台座
部６の下面位置（バルブステム側位置）にて溶接
固定される。 FIG. 2 shows another embodiment of the invention. In this embodiment, the spacer 10 side has a convex cross-sectional shape, and this protrusion is inserted through the through hole 8 . The valve chip 11 has a through hole 8
It is formed into a disk shape with a diameter larger than that of the The spacer 10 and the valve chip 11 are welded and fixed at the lower surface position (valve stem side position) of the pedestal 6.
その他は第１実施例に準じるので、準じる部分
に第１図と同一符号を付して説明を省略する。 Since the rest is the same as in the first embodiment, the same parts are given the same reference numerals as in FIG. 1 and their explanation will be omitted.
上記のように構成された実施例装置において
は、バルブリフタ１はリフタ本体２、スペーサ３
又は、１０、バルブチツプ４又は１１の三体型の
構造に形成されているので、各部の要求特性に応
じて各部の材料の選択が可能となる。つまり、軽
量であることが望ましいリフタ本体２には軽量材
料を、摺動の激しいカムとの当接面７を有するス
ペーサ３，１０、およびバルブステムと当接面９
を有するバルブチツプ４，１１には、それぞれ相
手部材と摩擦摩耗特性のよい材料が選択される。
したがつて、バルブリフタ全体が軽量化されつ
つ、局部的な摩耗が防止される。 In the embodiment device configured as described above, the valve lifter 1 includes a lifter body 2 and a spacer 3.
Alternatively, since the valve chip 10 and the valve chip 4 or 11 are formed in a three-type structure, the material of each part can be selected according to the required characteristics of each part. In other words, the lifter body 2, which is preferably lightweight, is made of lightweight material, and the spacers 3, 10, which have the abutment surface 7 with the cam that slides heavily, and the abutment surface 9 with the valve stem.
For the valve chips 4 and 11 having the above-described characteristics, a material having good frictional wear characteristics with respect to the mating member is selected.
Therefore, the weight of the entire valve lifter is reduced, and local wear is prevented.
また、スペーサ３，１０とバルブチツプ４，１
１を、リフタ本体２に対し回転可能に溶接固定し
たので、カムからあるいはバルブステムからの、
バルブ開閉方向以外の方向の力が、スペーサ３，
１０およびバルブチツプ４，１１の回転により吸
収され、各部に大きな抗力が発生しなくなる。し
たがつて、スリーブ部５、カムとの当接面７、バ
ルブステムとの当接面９の片当りも防止される。 Also, spacers 3, 10 and valve chips 4, 1
1 is rotatably welded to the lifter body 2, so that there is no leakage from the cam or valve stem.
The force in the direction other than the valve opening/closing direction is applied to the spacer 3,
10 and the valve chips 4, 11, and no large drag force is generated in each part. Therefore, uneven contact between the sleeve portion 5, the contact surface 7 with the cam, and the contact surface 9 with the valve stem is also prevented.
また、一般に要求特性からして、スペーサ３，
１０とバルブチツプ４，１１は高強度材、リフタ
本体２は軽量合金材等が望ましいが、軽量合金材
から成る台座部６をスペーサ３，１０とバルブチ
ツプ４，１１で挾みながらしかも高強度材同志を
接合するようにしたので、接合強度は十分大に確
保される。 In addition, in general, considering the required characteristics, the spacer 3,
10 and the valve chips 4, 11 are preferably made of high-strength materials, and the lifter body 2 is preferably made of a lightweight alloy material. Since the two parts are bonded together, a sufficiently large bonding strength can be ensured.
［考案の効果］
以上説明したように、本考案のバルブリフタに
よるときは、バルブリフタを三体型の構造とした
ので、各部に最適な材料を選択でき、バルブリフ
タの軽量化、およびシリンダヘツドとの熱膨張差
を小さくして高温時の騒音、低温時のステイツク
等の防止をはかりつつ、カム、バルブステムとの
当接面における耐摩耗性の向上をはかることがで
きるという効果が得られる。[Effects of the invention] As explained above, when using the valve lifter of the present invention, the valve lifter has a three-piece structure, so the optimal material can be selected for each part, the weight of the valve lifter is reduced, and thermal expansion with the cylinder head is reduced. By reducing the difference, it is possible to prevent noise at high temperatures, sticking at low temperatures, etc., while improving the wear resistance of the contact surfaces with the cam and valve stem.
また、三体構造としたので、プロジエクシヨン
を容易に設けることができ、簡単にスペーサとバ
ルブチツプを溶接接合することができる。 Further, since it has a three-piece structure, a projection can be easily provided, and the spacer and the valve chip can be easily welded together.
また、スペーサとバルブチツプとは、リフタ本
体の台座部を挾みながら溶接固定するので、溶接
時の部材支持が安定し、しかもスペーサとバルブ
チツプとの同種部材同志の接合とすることができ
るので、高い接合強度が得られる。 In addition, since the spacer and valve chip are welded and fixed while sandwiching the pedestal part of the lifter body, the support of the parts during welding is stable, and since the spacer and valve chip can be joined to the same type of parts, it is possible to increase the cost. Bond strength can be obtained.
さらに、スペーサとバルブチツプとの接合部材
をリフタ本体に対し相対回転可能としたので、各
部に大きな抗力が発生するのを防止でき、各部片
当り等を防止してバルブリフタの耐久性を向上す
ることができるという効果も得られる。 Furthermore, since the connecting member between the spacer and the valve tip can be rotated relative to the lifter body, it is possible to prevent large drag forces from being generated in each part, and to prevent each part from hitting each other, thereby improving the durability of the valve lifter. You can also get the effect of being able to do it.
第１図は本考案の一実施例に係るバルブリフタ
の断面図、第２図は本考案の別の実施例に係るバ
ルブリフタの断面図、第３図は第１図のバルブリ
フタの溶接時の断面図、第４図は第３図の装置の
溶接直前の状態を示す断面図、である。
１……バルブリフタ、２……リフタ本体、３，
１０……スペーサ、４，１１……バルブチツプ、
５……スリーブ部、６……台座部、７……カムと
の当接面、９……バルブステムとの当接面。
FIG. 1 is a cross-sectional view of a valve lifter according to one embodiment of the present invention, FIG. 2 is a cross-sectional view of a valve lifter according to another embodiment of the present invention, and FIG. 3 is a cross-sectional view of the valve lifter of FIG. 1 when welded. , and FIG. 4 is a cross-sectional view showing the device of FIG. 3 in a state immediately before welding. 1...Valve lifter, 2...Lifter body, 3,
10... Spacer, 4, 11... Valve chip,
5...Sleeve portion, 6...Pedestal portion, 7...Abutment surface with the cam, 9...Abutment surface with the valve stem.
Claims (1)
在に嵌挿される直打式バルブリフタにおいて、
シリンダヘツドの円筒孔に摺接するスリーブ部
と該スリーブ部から内方に延びる台座部とが一
体的に形成されたリフタ本体を軽量材料から構
成し、表面にカムとの当接面を有するスペーサ
をカムと摩擦摩耗特性の良い材料から構成し、
表面にバルブステムとの当接面を有するバルブ
チツプをバルブステムと摩擦摩耗特性の良い材
料から構成し、前記スペーサとバルブチツプと
溶接固定するとともに、前記リフタ本体に対し
回転可能に設けたことを特徴とするバルブリフ
タ。 (2) 前記リフタ本体がアルミ合金から成る実用新
案登録請求の範囲第１項記載のバルブリフタ。 (3) 前記リフタ本体が繊維強化プラスチツクから
成る実用新案登録請求の範囲第１項記載のバル
ブリフタ。 (4) 前記スペーサが鋳鉄から成る実用新案登録請
求の範囲第１項記載のバルブリフタ。 (5) 前記スペーサが鉄系焼結合金から成る実用新
案登録請求の範囲第１項記載のバルブリフタ。 (6) 前記スペーサが焼入れ鋼から成る実用新案登
録請求の範囲第１項記載のバルブリフタ。 (7) 前記バルブチツプが鋳鉄から成る実用新案登
録請求の範囲第１項記載のバルブリフタ。 (8) 前記バルブチツプが鉄系焼結合金から成る実
用新案登録請求の範囲第１項記載のバルブリフ
タ。 (9) 前記バルブチツプが焼入れ鋼から成る実用新
案登録請求の範囲第１項記載のバルブリフタ。 (10) 前記スペーサと前記バルブチツプが、前記リ
フタ本体のカム側表面位置にて溶接固定されて
いる実用新案登録請求の範囲第１項記載のバル
ブリフタ。 (11) 前記スペーサと前記バルブチツプが、リフタ
本体の台座部のバルブステム側表面位置にて溶
接固定されている実用新案登録請求の範囲第１
項記載のバルブリフタ。[Scope of Claim for Utility Model Registration] (1) In a direct-acting valve lifter that is slidably inserted into a cylindrical hole in a cylinder head of an internal combustion engine,
The lifter body is made of a lightweight material, and includes a sleeve part that slides into the cylindrical hole of the cylinder head and a pedestal part that extends inwardly from the sleeve part. Constructed from a cam and a material with good friction and wear characteristics,
A valve chip having a surface that comes into contact with the valve stem is made of a material having good friction and wear characteristics with the valve stem, is fixed by welding to the spacer and the valve chip, and is rotatably provided with respect to the lifter body. valve lifter. (2) The valve lifter according to claim 1, wherein the lifter body is made of an aluminum alloy. (3) The valve lifter according to claim 1, wherein the lifter body is made of fiber-reinforced plastic. (4) The valve lifter according to claim 1, wherein the spacer is made of cast iron. (5) The valve lifter according to claim 1, wherein the spacer is made of a ferrous sintered alloy. (6) The valve lifter according to claim 1, wherein the spacer is made of hardened steel. (7) The valve lifter according to claim 1, wherein the valve tip is made of cast iron. (8) The valve lifter according to claim 1, wherein the valve tip is made of an iron-based sintered alloy. (9) The valve lifter according to claim 1, wherein the valve tip is made of hardened steel. (10) The valve lifter according to claim 1, wherein the spacer and the valve chip are welded and fixed at a cam-side surface position of the lifter body. (11) Utility model registration claim 1, wherein the spacer and the valve chip are welded and fixed at a surface position on the valve stem side of the pedestal portion of the lifter main body.
Valve lifter as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12783685U JPH0346165Y2 (en) | 1985-08-23 | 1985-08-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12783685U JPH0346165Y2 (en) | 1985-08-23 | 1985-08-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6236204U JPS6236204U (en) | 1987-03-03 |
| JPH0346165Y2 true JPH0346165Y2 (en) | 1991-09-30 |
Family
ID=31022968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12783685U Expired JPH0346165Y2 (en) | 1985-08-23 | 1985-08-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0346165Y2 (en) |
-
1985
- 1985-08-23 JP JP12783685U patent/JPH0346165Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6236204U (en) | 1987-03-03 |
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