JPH05248211A - Valve drive for internal combustion engine - Google Patents
Valve drive for internal combustion engineInfo
- Publication number
- JPH05248211A JPH05248211A JP4670892A JP4670892A JPH05248211A JP H05248211 A JPH05248211 A JP H05248211A JP 4670892 A JP4670892 A JP 4670892A JP 4670892 A JP4670892 A JP 4670892A JP H05248211 A JPH05248211 A JP H05248211A
- Authority
- JP
- Japan
- Prior art keywords
- adjusting screw
- internal combustion
- combustion engine
- slide pad
- oil
- 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.)
- Pending
Links
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 簡単な潤滑構造により、スライドパッドの摩
耗を防止できる内燃機関の動弁装置を提供する。
【構成】 アジャストスクリュウ５に上下方向へ貫通さ
せて潤滑用オイル穴１４を形成し、アジャストスクリュ
ウ下端部の半球面部６とスライドパッド１０の凹部９と
の摺動面に雰囲気中の油分や油滴を積極的に導入するよ
うにした。
(57) [Summary] (Correction) [Purpose] To provide a valve train for an internal combustion engine that can prevent wear of a slide pad by a simple lubrication structure. [Structure] An oil hole 14 for lubrication is formed by penetrating the adjusting screw 5 in a vertical direction, and oil and oil droplets in the atmosphere are formed on a sliding surface between a hemispherical surface portion 6 at a lower end portion of the adjusting screw and a recess 9 of a slide pad 10. Was actively introduced.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車等内燃機関の動
弁装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve train for an internal combustion engine such as an automobile.
【０００２】[0002]
【従来の技術】ＯＨＣ等の動弁装置において、バルブク
リアランスのゼロ調整のために、ロッカアームにアジャ
ストスクリュウを組付けたりロッカアームの基端部をラ
ッシュアジャスタで支持したりすることは良く知られて
いる。2. Description of the Related Art In valve trains such as OHC, it is well known to assemble an adjusting screw to a rocker arm and to support the base end of the rocker arm with a lash adjuster for zero adjustment of valve clearance. ..
【０００３】また、このような動弁装置において、ロッ
カアーム側の半球面部に線接触する凹部を有したスライ
ドパッドをバルブの軸端部に滑動可能に配置することも
知られている。Further, in such a valve operating device, it is also known that a slide pad having a concave portion which comes into line contact with a hemispherical surface portion on the rocker arm side is slidably arranged at a shaft end portion of the valve.
【０００４】例えば、図４に示すように、カムシャフト
１のカム２により、ロッカシャフト３を中心に揺動され
るロッカアーム４の先端部にアジャストスクリュウ５が
ねじ込まれ、このアジャストスクリュウ５の下端部に半
球面部６が一体形成されている。For example, as shown in FIG. 4, the adjusting screw 5 is screwed into the tip of the rocker arm 4 which is swung about the rocker shaft 3 by the cam 2 of the cam shaft 1, and the lower end of the adjusting screw 5 is screwed. The hemispherical surface portion 6 is integrally formed with.
【０００５】一方、シリンダヘッド７に嵌挿された吸、
排気バルブ８の軸端部には、前記半球面部６に線接触す
る凹部９を有したスライドパッド１０が滑動可能に載置
され、スプリングリテーナ１１に嵌合された筒状のガイ
ド１２にゆとりを持って支持されている。即ち、ガイド
１２によりスライドパッド１０の脱落が防止されるので
ある。On the other hand, the suction fitted in the cylinder head 7,
A slide pad 10 having a recessed portion 9 that comes into line contact with the hemispherical surface portion 6 is slidably mounted on the shaft end portion of the exhaust valve 8, and a clearance is provided in a cylindrical guide 12 fitted to a spring retainer 11. Has been supported. That is, the guide 12 prevents the slide pad 10 from falling off.
【０００６】[0006]
【発明が解決しようとする課題】ところで、前述したよ
うな従来の動弁装置にあっては、アジャストスクリュウ
５の半球面部６とスライドパッド１０の凹部９との潤滑
を雰囲気中の油分や油滴に頼ったり、外部からの強制給
油（実開昭５８ー１８１９０３号公報等参照）に頼って
いた。By the way, in the conventional valve operating apparatus as described above, lubrication of the hemispherical surface portion 6 of the adjusting screw 5 and the concave portion 9 of the slide pad 10 is performed by oil or oil droplets in the atmosphere. , Or relying on forced refueling from the outside (see Japanese Utility Model Publication No. 58-181903).
【０００７】そのため、前者の方式にあっては、潤滑が
不十分でスライドパッド１０が摩耗し、また、後者の方
式にあっては、構造が複雑でコストアップを招来すると
いう不具合があった。Therefore, in the former method, there was a problem that the lubrication was insufficient and the slide pad 10 was worn, and in the latter method, the structure was complicated and the cost was increased.
【０００８】本発明は、このような実情の基に提案され
たもので、簡単な潤滑構造でスライドパッドの摩耗を防
止できる動弁装置を提供することを目的とする。The present invention has been proposed under such circumstances, and an object of the present invention is to provide a valve operating system capable of preventing abrasion of a slide pad with a simple lubricating structure.
【０００９】[0009]
【課題を解決するための手段】前記目的を達成するため
の、本発明の構成は、ロッカアームの先端部にねじ込む
アジャストスクリュウの下端に半球面部を設けるととも
に、この半球面部と線接触し得る凹部を有したスライド
パッドをバルブの軸端部に配置してなる内燃機関の動弁
装置において、前記アジャストスクリュウに上下方向へ
貫通させて潤滑用オイル穴を形成したことを特徴とす
る。In order to achieve the above object, the structure of the present invention is such that a hemispherical surface portion is provided at the lower end of an adjusting screw screwed into the tip end portion of a rocker arm, and a concave portion capable of making line contact with the hemispherical surface portion is provided. In a valve train of an internal combustion engine in which the slide pad is arranged at a shaft end portion of a valve, a lubricating oil hole is formed by vertically penetrating the adjusting screw.
【００１０】[0010]
【作用】前記構成によれば、潤滑用オイル穴によって、
雰囲気中の油分や油滴が積極的にアジャストスクリュウ
とスライドパッドの摺動面に供給され、潤滑が良好とな
る。According to the above construction, the lubricating oil hole allows
Oil and oil droplets in the atmosphere are positively supplied to the sliding surfaces of the adjusting screw and the slide pad to improve the lubrication.
【００１１】[0011]
【実施例】以下、本発明の一実施例を添付図面に基づい
て説明する。図１に示すように、図示しないロッカアー
ムの先端部にねじ込まれるアジャストスクリュウ５に薄
板製のガイド１３を介してスライドパッド１０が保持さ
れ、アジャストスクリュウ５の下端の半球面部６とスラ
イドパッド１０の上面の凹部９とが線接触している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, a slide pad 10 is held via a thin plate guide 13 on an adjusting screw 5 that is screwed into the tip of a rocker arm (not shown), and the hemispherical surface portion 6 at the lower end of the adjusting screw 5 and the upper surface of the slide pad 10 are held. Is in line contact with the recess 9 of.
【００１２】そして、前記アジャストスクリュウ５に
は、中心部を上下に貫通して潤滑用オイル穴１４が形成
され、このオイル穴１４を介して前記半球面部６と凹部
９との摺動面に雰囲気中の油分や油滴が供給されるよう
になっている。A lubricating oil hole 14 is formed in the adjusting screw 5 so as to penetrate vertically through the central portion thereof, and an atmosphere is formed on the sliding surface between the hemispherical surface portion 6 and the concave portion 9 through the oil hole 14. The oil and oil drops inside are supplied.
【００１３】また、前記オイル穴１４に、積極的に、雰
囲気中の油分や油滴を導入できるように、アジャストス
クリュウ上面のプラスねじ等のドライバ溝１５が中べこ
みに形成される。In addition, a driver groove 15 such as a plus screw on the upper surface of the adjusting screw is formed in the inside of the oil hole 14 so that oil and oil droplets in the atmosphere can be positively introduced.
【００１４】なお、前記ドライバ溝１５に代えて、図２
に示すように、アジャストスクリュウ上面に六角穴１６
を設けても同様の作用が得られる。Incidentally, instead of the driver groove 15, FIG.
As shown in, the hexagon socket 16
The same effect can be obtained by providing.
【００１５】また、オイル穴１４の径は、図３に示すよ
うに、バルブクリアランス調整時のアジャストスクリュ
ウ５の回転（図３のａ参照）や機関運転時のアジャスト
スクリュウ５の揺動（図３のｂ参照）の際に、前記凹部
９と触れない部分の半球面部６に開口する程度に選択さ
れる。The diameter of the oil hole 14 is, as shown in FIG. 3, rotation of the adjusting screw 5 when adjusting the valve clearance (see a in FIG. 3) and rocking of the adjusting screw 5 during engine operation (see FIG. 3). In step b)), it is selected such that it is opened in the hemispherical surface portion 6 of the portion that does not come into contact with the recess 9.
【００１６】その他の構成は図４と同様なので、図４を
参照してここでは詳しい説明は省略する。Since the other structure is the same as that of FIG. 4, detailed description will be omitted here with reference to FIG.
【００１７】このように構成されるため、ロッカ室の雰
囲気中の油分や油滴が、前記ドライバ溝１５或は六角穴
１６により、積極的に、オイル穴１４に導入され、この
オイル穴１４を通じて半球面部６と凹部９の摺動面に供
給される。With this structure, oil or oil droplets in the atmosphere of the rocker chamber are positively introduced into the oil hole 14 through the driver groove 15 or the hexagonal hole 16, and through the oil hole 14. It is supplied to the sliding surface of the hemispherical surface portion 6 and the concave portion 9.
【００１８】この結果、前記摺動面の潤滑が良好とな
り、スライドパッド１０の摩耗によるトラブルが解消さ
れる。As a result, lubrication of the sliding surface is improved, and troubles due to wear of the slide pad 10 are eliminated.
【００１９】[0019]
【発明の効果】以上説明したように本発明によれば、簡
単な潤滑構造でスライドパッドの摩耗を防止できるとい
う効果が得られる。As described above, according to the present invention, it is possible to prevent the slide pad from being worn by a simple lubricating structure.
【図１】本発明の一実施例を示す要部の構造説明図であ
る。FIG. 1 is a structural explanatory view of a main part showing an embodiment of the present invention.
【図２】同じく他の実施例を示す要部の構造説明図であ
る。FIG. 2 is a structural explanatory view of a main part of the other embodiment.
【図３】アジャストスクリュウの動きの説明図である。FIG. 3 is an explanatory view of the movement of the adjusting screw.
【図４】従来例の断面図である。FIG. 4 is a sectional view of a conventional example.
４ ロッカアーム ５ アジャストスクリュウ ６ 半球面部 ９ 凹部 １０ スライドパッド １３ 薄板製のガイド １４ 潤滑用オイル穴 4 Rocker Arm 5 Adjusting Screw 6 Hemispherical Part 9 Recess 10 Slide Pad 13 Thin Plate Guide 14 Lubricating Oil Hole
Claims (1)
ストスクリュウの下端に半球面部を設けるとともに、こ
の半球面部と線接触し得る凹部を有したスライドパッド
をバルブの軸端部に配置してなる内燃機関の動弁装置に
おいて、前記アジャストスクリュウに上下方向へ貫通さ
せて潤滑用オイル穴を形成したことを特徴とする内燃機
関の動弁装置。1. An internal combustion engine in which a hemispherical surface portion is provided at a lower end of an adjusting screw screwed into a tip end portion of a rocker arm, and a slide pad having a concave portion capable of making line contact with the hemispherical surface portion is disposed at a shaft end portion of a valve. A valve operating system for an internal combustion engine, wherein a lubricating oil hole is formed by vertically penetrating the adjusting screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4670892A JPH05248211A (en) | 1992-03-04 | 1992-03-04 | Valve drive for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4670892A JPH05248211A (en) | 1992-03-04 | 1992-03-04 | Valve drive for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05248211A true JPH05248211A (en) | 1993-09-24 |
Family
ID=12754863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4670892A Pending JPH05248211A (en) | 1992-03-04 | 1992-03-04 | Valve drive for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05248211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010096173A (en) * | 2008-09-16 | 2010-04-30 | Kubota Corp | Valve gear for engine |
| US8844488B2 (en) | 2012-05-18 | 2014-09-30 | Otics Corporation | Lubrication structure for rocker arm |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5913613B2 (en) * | 1979-03-12 | 1984-03-30 | 積水化成品工業株式会社 | Ground vibration isolation wall structure |
-
1992
- 1992-03-04 JP JP4670892A patent/JPH05248211A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5913613B2 (en) * | 1979-03-12 | 1984-03-30 | 積水化成品工業株式会社 | Ground vibration isolation wall structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010096173A (en) * | 2008-09-16 | 2010-04-30 | Kubota Corp | Valve gear for engine |
| US8844488B2 (en) | 2012-05-18 | 2014-09-30 | Otics Corporation | Lubrication structure for rocker arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19980623 |