JPH0746721Y2 - Valve mechanism of internal combustion engine - Google Patents
Valve mechanism of internal combustion engineInfo
- Publication number
- JPH0746721Y2 JPH0746721Y2 JP1990085766U JP8576690U JPH0746721Y2 JP H0746721 Y2 JPH0746721 Y2 JP H0746721Y2 JP 1990085766 U JP1990085766 U JP 1990085766U JP 8576690 U JP8576690 U JP 8576690U JP H0746721 Y2 JPH0746721 Y2 JP H0746721Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pad
- washer
- internal combustion
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 13
- 238000005096 rolling process Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/40—Ball cages for multiple rows of balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/50—Other types of ball or roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、内燃機関の吸・排気用バルブの動弁機構、
特にカムシャフトのカムとバルブリフタとの間の摩擦力
を軽減した内燃機関の動弁機構に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a valve operating mechanism for intake and exhaust valves of an internal combustion engine,
In particular, the present invention relates to a valve mechanism for an internal combustion engine that reduces frictional force between a cam of a camshaft and a valve lifter.
内燃機関の吸・排気用バルブはコイルバネによりエンジ
ンヘッド部に設けたバルブシートに閉鎖方向に付勢され
て取付けられる。内燃機関の吸・排気用バルブはカムシ
ャフトの動弁機構により閉鎖駆動され吸・排気を行うが
バルブシートとの間で頻繁に開閉動作が繰り返されるた
め偏摩耗しないようバルブ自身を回転させる工夫がなさ
れている。例えばカムシャフトに形成されるカムと吸・
排気用バルブを取付けたバルブリフタとを接触させる方
式のものでは該吸・排気用バルブの中心線とカムとの中
心線とをオフセットさせ、吸・排気用バルブに回転トル
クが生じるよう種々の工夫がなされる。そしてカムと接
触するバルブリフタには上面にパッドを設け該パッドを
介してカムと接触させるが、カムはこのパッドと直接接
触するため該パッドも回転させなければパッド表面に偏
摩耗が生じエンジン性能に悪影響を与えるようになる。
従ってバルブリフタ上のパッドを回転させる工夫もなさ
れている。例えば、実開昭61−173705号で開示さている
ように、パッドとバルブリフタ上面との間にスラストこ
ろがり軸受を介在させた動弁機構、或いは実開平１−11
9809号で開示されているように、カムと接触するプレー
ト（パッド）とバルブリフタとの間に転動体を挟持させ
たバルブリフタ等が知られている。The intake / exhaust valve of the internal combustion engine is attached by a coil spring to a valve seat provided in the engine head portion in a closing direction. The intake / exhaust valve of an internal combustion engine is closed and driven by a valve mechanism of a camshaft to perform intake / exhaust, but since the opening / closing operation is frequently repeated with the valve seat, it is necessary to rotate the valve itself to prevent uneven wear. Has been done. For example, the cam formed on the camshaft and the suction /
In the system in which the valve lifter equipped with the exhaust valve is in contact, the center line of the intake / exhaust valve is offset from the center line of the cam, and various measures are taken to generate a rotational torque in the intake / exhaust valve. Done. The valve lifter that comes into contact with the cam is provided with a pad on the upper surface and is brought into contact with the cam through the pad. However, since the cam comes into direct contact with this pad, uneven wear will occur on the pad surface unless the pad is also rotated, resulting in engine performance. It will have an adverse effect.
Therefore, some measures have been taken to rotate the pad on the valve lifter. For example, as disclosed in Japanese Utility Model Laid-Open No. 61-173705, a valve mechanism having a thrust rolling bearing interposed between a pad and the upper surface of a valve lifter, or a fully open flat type 1-11.
As disclosed in Japanese Patent No. 9809, there is known a valve lifter in which a rolling element is sandwiched between a plate (pad) that contacts a cam and a valve lifter.
上記従来例においては、いずれもカム中心線とバルブリ
フタの中心線とをオフセットさせ、パッドを回転させる
ものであるが、カムからの負荷は常にパッドの円周方向
ではなく第７図に示すような矢印方向に作用する。従っ
てパッドも矢印方向に動きながら回転するため軌道溝を
持った玉軸受やころ軸受のボールやころの動作は第７図
のＡ部ではころがり、Ｂ部ではスベリとなる。このため
玉軸受では溝肩への乗り上げ、ころ軸受ではころの摩耗
が生じ、パッドが円滑な回転運動をしなくなるという問
題がある。In each of the above conventional examples, the center line of the cam and the center line of the valve lifter are offset to rotate the pad, but the load from the cam is not always in the circumferential direction of the pad, as shown in FIG. It acts in the direction of the arrow. Therefore, since the pad also rotates while moving in the direction of the arrow, the balls and rollers of the ball bearing and the roller bearing having the raceway groove roll in the portion A in FIG. 7 and slide in the portion B. For this reason, there is a problem in that the ball bearing rides on the groove shoulder and the roller bearing wears the rollers, so that the pad does not rotate smoothly.
この考案はかかる課題を解決するためになされたもので
あり、その目的とする所はカムに直接接触するパッドが
カムからの駆動に対して一定平面内であらゆる方向に自
由度を持ち且つ円滑な回転運動を生じさせるような内燃
機関の動弁機構を提供することにある。The present invention has been made in order to solve such a problem, and the purpose thereof is that a pad that directly contacts the cam has a degree of freedom in all directions within a certain plane with respect to the drive from the cam and is smooth. An object of the present invention is to provide a valve mechanism for an internal combustion engine that causes a rotary motion.
即ち、上記課題を解決するために、カムシャフトに形
成されたカムとバルブリフタ上部に配置されたパッドと
が直接的に係合する内燃機関の動弁機構において、前記
パッドと前記バルブリフタとの間に配置されるスラスト
転がり軸受が、平面軌道を有する上部ワッシャと、平面
軌道を有する下部ワッシャと、同ワッシャの軌道面間に
配置される複数のボールと該ボールを周方向に等数個ず
つ離隔収容するポケットを有する保持器とを有すること
を特徴とする。That is, in order to solve the above problems, in a valve mechanism of an internal combustion engine in which a cam formed on a cam shaft and a pad arranged on an upper portion of a valve lifter directly engage with each other, between the pad and the valve lifter. The thrust rolling bearing to be arranged has an upper washer having a flat raceway, a lower washer having a flat raceway, a plurality of balls arranged between raceway surfaces of the washer, and an equal number of the balls spaced apart in the circumferential direction. And a retainer having a pocket that operates.
或いはまた前記スラスト転がり軸受は、上部ワッシャ
の外径部軸方向に形成した円筒部と下部ワッシャの内径
部軸方向に形成した円筒部との間に形成される空間部
に、各ポケットに複数個のボールを隔離収容した保持器
を配置すると共に前記上部ワッシャと下部ワッシャとの
いずれか一方または双方と、該保持器とをカシメて一体
にしたスラスト転がり軸受であることを特徴とする。Alternatively, the thrust rolling bearing has a plurality of pockets in a space formed between a cylindrical portion formed in the outer diameter portion axial direction of the upper washer and a cylindrical portion formed in the inner diameter portion axial direction of the lower washer. And a cage in which the balls are separately housed, and one or both of the upper washer and the lower washer and the cage are integrated into a thrust rolling bearing.
〔作用〕 上記手段を実施例図を参照しつつ説明する。[Operation] The above means will be described with reference to the drawings.
先ずの手段では、カムシャフト10の回転と共にカム９
とパッド８とは直接接触摺動するが保持器23に収容され
たボール20はあらゆる方向に自由度を有しているためパ
ッド８も一つの面内でＸ方向にもＹ方向にも自由に移動
しつつ回転することになる。また、パッド８は保持器23
のポケットに収容された多数のボール20により支持され
るので負荷能力も大きく、カム９からの衝撃荷重にも耐
えることが出来る。According to the first means, the cam 9 is rotated along with the rotation of the cam shaft 10.
Although the pad 8 and the pad 8 slide in direct contact with each other, the ball 20 housed in the cage 23 has a degree of freedom in all directions, so that the pad 8 can freely move in the X direction and the Y direction within one plane. It will rotate while moving. In addition, the pad 8 is a retainer 23.
Since it is supported by a large number of balls 20 housed in the pockets, it has a large load capacity and can withstand an impact load from the cam 9.
またの手段では、前記パッド８の一定面内におけるあ
らゆる方向の自由度を確保出来るだけでなく、該パッド
８とバルブリフタ４との間への組込みが極めて容易とな
る。With the other means, not only the degree of freedom in all directions within the fixed plane of the pad 8 can be secured, but also the assembly between the pad 8 and the valve lifter 4 becomes extremely easy.
以下、この考案の具体的実施例について図面を参照して
説明する。Hereinafter, a specific embodiment of the present invention will be described with reference to the drawings.
第１図はこの考案の内燃機関の動弁機構を備えたカムシ
ャフトとカム、及びバルブとバルブリフタ等の一部断面
図である。吸・排気バルブ用バルブ１（以下単にバルブ
１とする）は一方をエンジンヘッド３に上下移動可能に
設置されたバルブリフタ４にコイルバネ５を介して取付
けられる。６は前記コイルバネ５の端部を支持するリテ
ーナであって、前記バルブ１の端部に形成された溝1aに
コッタ７を介して固定される。FIG. 1 is a partial cross-sectional view of a camshaft, a cam, a valve, a valve lifter, etc. equipped with a valve mechanism for an internal combustion engine according to the present invention. The intake / exhaust valve 1 (hereinafter simply referred to as "valve 1") is attached via a coil spring 5 to a valve lifter 4 that is vertically movable on the engine head 3. Reference numeral 6 is a retainer that supports the end of the coil spring 5, and is fixed to the groove 1a formed at the end of the valve 1 via a cotter 7.
前記バルブリフタ４の隔壁4aとパッド８との間にはスラ
スト転がり軸受２が設置され、更に該スラスト転がり軸
受２の上部にはパッド８が設置される。該パッド８には
カムシャフト10に形成されたカム９が直接接触するが、
この場合前記バルブ１やバルブリフタ４には常にコイル
バネ５からの付勢力が作用するようにエンジンヘッド部
３に取付けられる。この場合もカム９の中心線とバルブ
１との中心線とはδだけオフセットさせる。次に、前記
スラスト転がり軸受２について詳細に説明する。第２図
は前記スラスト転がり軸受２の軸方向拡大断面図であ
る。即ち、このスラスト転がり軸受２は上部ワッシャ21
と下部ワッシャ22と、保持器23と該保持器23によって保
持されるボール20とより構成される。そしてこれら上部
ワッシャ21と下部ワッシャ22のいずれにもボール20用の
軌道溝は設けない。また前記下部ワッシャ22の内径部に
は軸方向上方に円筒部22aが形成され必要以上に保持器2
3がスラスト方向に移動しないようにしてある。The thrust rolling bearing 2 is installed between the partition wall 4 a of the valve lifter 4 and the pad 8, and the pad 8 is installed above the thrust rolling bearing 2. The cam 9 formed on the camshaft 10 directly contacts the pad 8,
In this case, the valve 1 and the valve lifter 4 are attached to the engine head portion 3 so that the biasing force from the coil spring 5 always acts. Also in this case, the center line of the cam 9 and the center line of the valve 1 are offset by δ. Next, the thrust rolling bearing 2 will be described in detail. FIG. 2 is an axially enlarged sectional view of the thrust rolling bearing 2. In other words, the thrust rolling bearing 2 has the upper washer 21
And a lower washer 22, a retainer 23, and a ball 20 retained by the retainer 23. Further, neither the upper washer 21 nor the lower washer 22 is provided with a raceway groove for the ball 20. Further, a cylindrical portion 22a is formed axially upward in the inner diameter portion of the lower washer 22 so that the cage 2 is unnecessarily used.
The 3 does not move in the thrust direction.
前記保持器23は第３図の平面図に示すように、ポケット
23aが円周方向に三分割されて形成され該ポケット23aに
は二列にボール20が入れられている。該ポケット23aの
分割数やボール20の列数は増やしても減らしても良い。As shown in the plan view of FIG. 3, the cage 23 is a pocket.
23a is formed by being divided into three in the circumferential direction, and the balls 20 are put in two rows in the pocket 23a. The number of divided pockets 23a and the number of rows of balls 20 may be increased or decreased.
スラスト転がり軸受２を以上のように形成すると、カム
シャフト10の回転と共にカムとパッドとは摺動するが保
持器23に収容されたボール20はあらゆる方向に自由度を
有しているためパッド８も一定の平面内でＸ方向にもＹ
方向にも自由に移動しつつ回転することになる。また、
パッド８は保持器23のポケットに収容された多数のボー
ル20により支持されるので負荷能力も大きくカム９から
の衝撃荷重にも耐えることが出来る。第４図は前記スラ
スト転がり軸受２の変形実施例の軸方向の断面図であ
る。When the thrust rolling bearing 2 is formed as described above, the cam and the pad slide with the rotation of the cam shaft 10, but the ball 20 accommodated in the cage 23 has a degree of freedom in all directions, so the pad 8 Also in the same plane in the X direction and Y
It will rotate while moving freely in any direction. Also,
Since the pad 8 is supported by a large number of balls 20 housed in the pockets of the cage 23, it has a large load capacity and can withstand an impact load from the cam 9. FIG. 4 is an axial sectional view of a modified embodiment of the thrust rolling bearing 2.
この変形実施例では前記上部ワッシャ21の外形部には軸
方向に円筒部21aを形成し、下部ワッシャ22の内径部22a
には軸方向の円筒部を形成する。そしてこれら上部ワッ
シャ21の円筒部21aと、下部ワッシャ22の内径部22aとの
間に出来る空間部に保持器23とボール20を配置する。そ
して上ワッシャ21の外形部に形成された円筒部21aの下
は数箇所をカシメて保持器23と一体にしてある。このよ
うに上部ワッシャ21とボール20をポケット23aに入れた
保持器23等を非分離として一体構造とすれば、前記パッ
ド８の一定面内におけるあらゆる方向の自由度を確保出
来るだけでなく、該パッド８とバルブリフタ４との間へ
の組込みが極めて容易となる。In this modification, a cylindrical portion 21a is formed in the axial direction on the outer portion of the upper washer 21, and the inner diameter portion 22a of the lower washer 22 is formed.
Is formed with a cylindrical portion in the axial direction. Then, the cage 23 and the ball 20 are arranged in a space formed between the cylindrical portion 21a of the upper washer 21 and the inner diameter portion 22a of the lower washer 22. The bottom of the cylindrical portion 21a formed on the outer shape of the upper washer 21 is integrated with the retainer 23 by crimping several places. If the upper washer 21 and the cage 23 in which the ball 20 is placed in the pocket 23a are not separated and have an integrated structure as described above, not only the degree of freedom in all directions within a certain plane of the pad 8 can be secured, but also Assembling between the pad 8 and the valve lifter 4 becomes extremely easy.
第５図と第６図は前記保持器23の変形実施例の平面図で
ある。即ち、第５図に示すように大きなポケット23aを
複数個形成しここに多数のボール20をランダムに入れる
ようにしても良いし、第６図に示すように前記保持23は
半径方向放射状に多数のポケット23aを形成しここに二
個（二個に限らない）のボール20を入れるようにしても
良い。更に、スラスト転がり軸受２は上部ワッシャ21や
下部ワッシャ22を使用せずポケット23aを形成した保持
器23と該ポケット23aに収容するボール20とで構成して
も良い。5 and 6 are plan views of a modified embodiment of the cage 23. That is, a plurality of large pockets 23a may be formed as shown in FIG. 5 and a large number of balls 20 may be randomly inserted therein, or as shown in FIG. It is also possible to form a pocket 23a and to put two (not limited to two) balls 20 therein. Further, the thrust rolling bearing 2 may be constituted by a retainer 23 having a pocket 23a formed without using the upper washer 21 and the lower washer 22 and a ball 20 housed in the pocket 23a.
この考案の内燃機関の動弁機構は以上詳述したような構
成としたので、カムシャフトに形成されたカムと直接接
触するパッドがスラスト方向のあらゆる方向に自由度を
持つことになりカムシャフトの回転により極めてスムー
スな回転を得ることが出来る。また、従来のもののよう
に転動体が溝に乗り上げたり、ころが摩耗したり、焼付
いたりすることはなくなり、バルブも円滑に回転運動を
行うようになる。Since the valve mechanism of the internal combustion engine of the present invention is configured as described above in detail, the pad directly contacting the cam formed on the camshaft has flexibility in all directions of the thrust direction. A very smooth rotation can be obtained by the rotation. Further, unlike the conventional one, the rolling element does not ride on the groove, the rollers are not worn or seized, and the valve can smoothly rotate.
第１図はこの考案の内燃機関の動弁機構を備えたカムシ
ャフトとバルブ及びバルブリフタ等の一部断面図、第２
図はスラスト転がり軸受の軸方向拡大断面図、第３図は
保持器の平面図、第４図はこの考案で使用されるスラス
ト転がり軸受の変形実施例で軸方向の断面図、第５図と
第６図はこの考案で使用されるスラスト転がり軸受を構
成する保持器の変形実施例の平面図、第７図は従来のバ
ルブリフタ上のパッドを回転させるスラストころがり軸
受の平面図である。 １…バルブ、２…スラスト転がり軸受 ４…バルブリフタ、５…コイルバネ ８…パッド、９…カム、20…ボール 21…上部ワッシャ、22…下部ワッシャ 23…保持器FIG. 1 is a partial cross-sectional view of a camshaft, a valve, a valve lifter, etc. equipped with a valve operating mechanism of an internal combustion engine according to the present invention.
FIG. 3 is an enlarged axial sectional view of the thrust rolling bearing, FIG. 3 is a plan view of the cage, FIG. 4 is an axial sectional view of a modified embodiment of the thrust rolling bearing used in the present invention, and FIG. FIG. 6 is a plan view of a modified embodiment of a cage constituting a thrust rolling bearing used in the present invention, and FIG. 7 is a plan view of a conventional thrust rolling bearing for rotating a pad on a valve lifter. 1 ... Valve, 2 ... Thrust rolling bearing 4 ... Valve lifter, 5 ... Coil spring 8 ... Pad, 9 ... Cam, 20 ... Ball 21 ... Upper washer, 22 ... Lower washer 23 ... Retainer
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実願昭60−57416号（実開昭61−173705 号）の願書に添付した明細書及び図面の内 容を撮影したマイクロフィルム（ＪＰ, Ｕ) 実願昭51−91790号（実開昭52−15645 号）の願書に添付した明細書及び図面の内 容を撮影したマイクロフィルム（ＪＰ, Ｕ) ─────────────────────────────────────────────────── ───Continued from the front page (56) References Microfilm (JP, U) of the contents and drawings attached to the application for Japanese Patent Application No. 60-57416 (No. 61-173705). A microfilm (JP, U) of the contents and drawings attached to the application for Japanese Utility Model Application No. 51-91790 (Japanese Utility Model Application No. 52-15645)
Claims (2)
フタ上部に配置されたパッドとが直接的に係合する内燃
機関の動弁機構において、前記パッドと前記バルブリフ
タとの間に配置されるスラスト転がり軸受が、平面軌道
を有する上部ワッシャと、平面軌道を有する下部ワッシ
ャと、同ワッシャの軌道面間に配置される複数のボール
と該ボールを周方向に等数個ずつ離隔収容するポケット
を有する保持器とを有することを特徴とする内燃機関の
動弁機構。1. A valve rolling mechanism for an internal combustion engine, wherein a cam formed on a cam shaft and a pad arranged above a valve lifter directly engage with each other, and a thrust rolling member arranged between the pad and the valve lifter. A bearing having an upper washer having a flat raceway, a lower washer having a flat raceway, a plurality of balls arranged between raceway surfaces of the washer, and pockets for accommodating and accommodating the same number of balls in the circumferential direction. And a valve mechanism for an internal combustion engine.
径部軸方向に形成した円筒部と下部ワッシャの内径部軸
方向に形成した円筒部との間に形成される空間部に、各
ポケットに複数個のボールを隔離収容した保持器を配置
すると共に前記上部ワッシャと下部ワッシャとのいずれ
か一方または双方と、該保持器とをカシメて一体にした
スラスト転がり軸受である請求項第１項記載の内燃機関
の動弁機構。2. A thrust rolling bearing has a pocket formed in each space in a space formed between a cylindrical portion formed in the outer diameter portion axial direction of the upper washer and a cylindrical portion formed in the inner diameter portion axial direction of the lower washer. The thrust rolling bearing according to claim 1, wherein a cage containing a plurality of balls separated from each other is arranged, and either or both of the upper washer and the lower washer and the cage are integrated by caulking. Valve mechanism of internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990085766U JPH0746721Y2 (en) | 1990-08-13 | 1990-08-13 | Valve mechanism of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990085766U JPH0746721Y2 (en) | 1990-08-13 | 1990-08-13 | Valve mechanism of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0444405U JPH0444405U (en) | 1992-04-15 |
| JPH0746721Y2 true JPH0746721Y2 (en) | 1995-10-25 |
Family
ID=31817129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990085766U Expired - Fee Related JPH0746721Y2 (en) | 1990-08-13 | 1990-08-13 | Valve mechanism of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746721Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5215645U (en) * | 1976-07-10 | 1977-02-03 | ||
| JPS61173705U (en) * | 1985-04-19 | 1986-10-29 |
-
1990
- 1990-08-13 JP JP1990085766U patent/JPH0746721Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0444405U (en) | 1992-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4684356A (en) | Roller bearing assemblies for a homokinetic universal joint | |
| JPH0575551U (en) | Loading cam device | |
| JPH0368208B2 (en) | ||
| JP2011099342A (en) | Camshaft device | |
| JP2003172249A (en) | Radial piston pump | |
| WO2006095777A1 (en) | Rolling bearing, camshaft device, and camshaft supporting device | |
| JPH06213258A (en) | Unidirectional roller clutch | |
| US4227493A (en) | Valve rotator | |
| JPH0746721Y2 (en) | Valve mechanism of internal combustion engine | |
| US5148779A (en) | Valve rotating apparatus of internal-combustion engine | |
| JP2000130563A (en) | Pulley unit | |
| US3717133A (en) | Installation for producing a rotary movement of a valve in an internal combustion engine | |
| JP3271289B2 (en) | Valve drive for 4-cycle engine | |
| JP3707721B2 (en) | Pulley unit | |
| JP3722924B2 (en) | Clutch built-in rotating parts | |
| JP4466367B2 (en) | Split bearing and cam journal provided with the split bearing | |
| JPS6275120A (en) | Shaking bearing | |
| JP2004190763A (en) | Rotary support device for pulley | |
| JP2004263819A (en) | Multi-point contact ball bearings | |
| JPH0656519U (en) | Ball bearing | |
| JPH11287261A (en) | One-way clutch | |
| JP2011012762A (en) | One-way clutch and pulley unit with the one-way clutch built therein | |
| JP2562141Y2 (en) | Valve rotation device for internal combustion engine | |
| JP2513590Y2 (en) | Double row spherical roller bearing | |
| JPH09217751A (en) | Bearing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |