JPS595127Y2 - Tappet lubrication device in internal combustion engine valve gear - Google Patents
Tappet lubrication device in internal combustion engine valve gearInfo
- Publication number
- JPS595127Y2 JPS595127Y2 JP1979027703U JP2770379U JPS595127Y2 JP S595127 Y2 JPS595127 Y2 JP S595127Y2 JP 1979027703 U JP1979027703 U JP 1979027703U JP 2770379 U JP2770379 U JP 2770379U JP S595127 Y2 JPS595127 Y2 JP S595127Y2
- Authority
- JP
- Japan
- Prior art keywords
- tappet
- internal combustion
- combustion engine
- lubrication device
- groove
- 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
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Description
【考案の詳細な説明】
本考案は、内燃機関の吸気弁あるいは排気弁装置（以下
弁装置という）におけるタペットの潤滑装置に関する。[Detailed Description of the Invention] The present invention relates to a tappet lubrication device in an intake valve or exhaust valve device (hereinafter referred to as a valve device) of an internal combustion engine.
内燃機関の弁装置において、カム軸上の弁カムのカム面
に摺接して往復動するタペットは、シリンダブロックに
形成されたタペットガイド内を上下動するのであるが、
タペットの外周面とタペットガイドの内周面との間の潤
滑が、機関の高速化につれて重要となってくる。In a valve device for an internal combustion engine, a tappet that reciprocates in sliding contact with the cam surface of a valve cam on a camshaft moves up and down within a tappet guide formed in a cylinder block.
Lubrication between the outer peripheral surface of the tappet and the inner peripheral surface of the tappet guide becomes more important as the speed of the engine increases.
その対策として、例えば、タペットの外周面に螺旋状の
油溝を形成したタペットの潤滑装置が従来提案されてお
り（実開昭５３−１９６１２号公報）、一応の成果をあ
げているが、この従来装置では、タペットの外周面に螺
旋状の溝を穿設するという複雑な加工を施す必要がある
ため、製造コストが高くなると共に、機関の運転停止中
にこの螺旋状の油溝を通じて潤滑油がタペット外周部か
ら流出（落下）するという欠点がある。As a countermeasure against this, for example, a tappet lubrication device in which a spiral oil groove is formed on the outer circumferential surface of the tappet has been proposed (Japanese Utility Model Publication No. 19612/1983), and this has achieved some results. With conventional equipment, it is necessary to perform a complicated process of drilling a spiral groove on the outer circumferential surface of the tappet, which increases manufacturing costs and also allows lubricating oil to flow through the spiral oil groove when the engine is stopped. There is a disadvantage that the water flows out (falls) from the outer periphery of the tappet.
本考案は、このような従来装置の欠点を解消した内燃機
関の弁装置におけるタペット潤滑装置の提供を目的とす
るものであって、本考案は、内燃機関の弁装置における
カム軸上の弁カムのカム面に摺接し、タペットガイド内
を往復動するタペットにおいて、タペットの外周面上に
、上端がタペット上端面まで延長し、下端が常にタペッ
トガイド内に位置する、軸方向の複数の油溜めを設けた
点を特長とするものであり、本考案によれば、機関停止
時にも潤滑油が落下するおそれがなくかつ製造コストの
安価なタペット潤滑装置を得ることができる。The object of the present invention is to provide a tappet lubrication device for a valve device of an internal combustion engine that eliminates the drawbacks of such conventional devices. In a tappet that slides in contact with the cam surface of the tappet and reciprocates within the tappet guide, there are multiple axial oil reservoirs on the outer peripheral surface of the tappet, the upper end of which extends to the upper end surface of the tappet, and the lower end of which is always located within the tappet guide. According to the present invention, it is possible to obtain a tappet lubrication device that has no fear of lubricating oil dropping even when the engine is stopped and is inexpensive to manufacture.
次に図により本考案の実施例を説明する。Next, embodiments of the present invention will be explained with reference to the drawings.
機関のシリンダブロック１に穿設したタペットガイド（
タペット挿入孔）２には、タペット３が摺動可能に挿入
されている。Tappet guide (
A tappet 3 is slidably inserted into the tappet insertion hole 2.
タペット３の底面は弁カム４のカム面に摺接しまたタペ
ット３にはブツシュロッド５が係合している。The bottom surface of the tappet 3 is in sliding contact with the cam surface of the valve cam 4, and a bushing rod 5 is engaged with the tappet 3.
タペット３の外周には、第２，３図に明示したように、
軸方向に複数の溝６が穿設されている。On the outer periphery of the tappet 3, as shown in Figures 2 and 3,
A plurality of grooves 6 are bored in the axial direction.
この溝６の上端はタペット３の上端面まで延びているが
下端は、タペット３が機関に組込まれたときタペットが
下死点にある位置（ストロークの開始点）で゛もタペッ
トガイド２内にあるように、すなわち、溝６の下端がタ
ペットの下死点でタペットガイド２の下端面よりも寸法
ａだけ上方にくるように、溝６の下端の位置が決定され
るものとする。The upper end of this groove 6 extends to the upper end surface of the tappet 3, but the lower end extends into the tappet guide 2 at the position where the tappet is at the bottom dead center (stroke start point) when the tappet 3 is installed in the engine. In other words, the position of the lower end of the groove 6 is determined so that the lower end of the groove 6 is located above the lower end surface of the tappet guide 2 by the dimension a at the bottom dead center of the tappet.
したがって、タペット３が機関に組込まれたときには、
溝６は油溜めの作用をなすことになり、タペット３の上
下方向への往復動により、溝６内に溜っている潤滑油は
上方へのみ放出されるが、機関運転中あるいは停止中に
、該溝６内の潤滑油が落下して、溝６内に潤滑油がなく
なってしまうというようなことはない。Therefore, when tappet 3 is installed in the engine,
The groove 6 acts as an oil reservoir, and the lubricating oil accumulated in the groove 6 is released only upward by the vertical reciprocation of the tappet 3, but when the engine is running or stopped, There is no possibility that the lubricating oil in the groove 6 will fall and the lubricating oil in the groove 6 will run out.
このように、本考案のタペットでは、タペットの外周面
上に、軸方向の複数の油溜め溝を、その上端がタペット
の上端面まで延び、下端が常にタペットガイド内に位置
するように設けたので、タペットの上下方向への往復動
により、溝内に溜っている潤滑油は上方へのみ放出され
るが、機関運転中あるいは停止中に、溝内の潤滑油が落
下して、溝内に潤滑油がなくなってしまうことはない。As described above, in the tappet of the present invention, a plurality of oil sump grooves in the axial direction are provided on the outer peripheral surface of the tappet so that the upper ends thereof extend to the upper end surface of the tappet, and the lower ends are always located within the tappet guide. Therefore, due to the vertical reciprocating movement of the tappet, the lubricating oil accumulated in the groove is released only upward, but when the engine is running or stopped, the lubricating oil in the groove falls and enters the groove. Never run out of lubricant.
したがって、タペットの外周に穿設した溝内に常に潤滑
油が貯えられていること・なり、タペットの潤滑は極め
て良好に行える。Therefore, lubricating oil is always stored in the groove formed on the outer periphery of the tappet, and the tappet can be lubricated extremely well.
そして、そのためには、タペットの外周面に軸方向の溝
に複数穿設するという簡単な加工を施すだけでよいので
、これに要する手間はほとんどなく、製造コストの上昇
を来すおそれはない。For this purpose, it is only necessary to perform a simple process of drilling a plurality of axial grooves on the outer circumferential surface of the tappet, so there is almost no effort required for this, and there is no risk of an increase in manufacturing costs.
以上のように、本考案によれば、潤滑性の良好なタペッ
ト潤滑装置を安価に提供することができるものであり、
特に高速４サイクル機関に適用するときは、極めて顕著
な作用・効果を奏するものである。As described above, according to the present invention, a tappet lubrication device with good lubricity can be provided at a low cost.
In particular, when applied to high-speed four-stroke engines, extremely remarkable effects and effects can be achieved.
第１図は本考案のタペット潤滑装置の側断面図、第２図
は同タペットの側面図、第３図は同タペットの横断面図
である。
１・・・・・・シリンダブロック、２・・・・・・タペ
ットガイド、３・・・・・・タペット、５・・・・・・
ブツシュロッド、６・・・・・・溝。FIG. 1 is a side sectional view of the tappet lubricating device of the present invention, FIG. 2 is a side view of the same tappet, and FIG. 3 is a cross-sectional view of the same tappet. 1... Cylinder block, 2... Tappet guide, 3... Tappet, 5...
Bush rod, 6...groove.
Claims (1)
摺接し、タペットガイド内を往復動するタペットにおい
て、タペットの外周面上に、上端がタペット上端面はで
延長し、下端が常にタペットガイド内に作置する、軸方
向の複数の油溜め溝を穿設した内燃機関の弁装置におけ
るタペットの潤滑装置。In a tappet that slides against the cam surface of a valve cam on a camshaft in a valve device of an internal combustion engine and reciprocates within a tappet guide, the upper end extends on the outer peripheral surface of the tappet, and the lower end always extends on the tappet upper end surface. A tappet lubrication device for a valve device of an internal combustion engine, which is installed in a guide and has a plurality of oil sump grooves in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979027703U JPS595127Y2 (en) | 1979-03-05 | 1979-03-05 | Tappet lubrication device in internal combustion engine valve gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979027703U JPS595127Y2 (en) | 1979-03-05 | 1979-03-05 | Tappet lubrication device in internal combustion engine valve gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55127810U JPS55127810U (en) | 1980-09-10 |
| JPS595127Y2 true JPS595127Y2 (en) | 1984-02-16 |
Family
ID=28872317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979027703U Expired JPS595127Y2 (en) | 1979-03-05 | 1979-03-05 | Tappet lubrication device in internal combustion engine valve gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595127Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS628321Y2 (en) * | 1980-03-28 | 1987-02-26 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319612B2 (en) * | 1973-06-06 | 1978-06-22 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319612U (en) * | 1976-07-29 | 1978-02-20 |
-
1979
- 1979-03-05 JP JP1979027703U patent/JPS595127Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319612B2 (en) * | 1973-06-06 | 1978-06-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55127810U (en) | 1980-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7243632B2 (en) | Small four-stroke gasoline engine with oil mist lubrication | |
| JPS595127Y2 (en) | Tappet lubrication device in internal combustion engine valve gear | |
| JPS6126566Y2 (en) | ||
| JPH0252912U (en) | ||
| JP2530848Y2 (en) | Lubrication structure for vertical engine | |
| CN2644786Y (en) | Piston with oil sump | |
| JP2002013441A (en) | Piston for internal combustion engine | |
| JPH0212241Y2 (en) | ||
| JP3506049B2 (en) | Valve train | |
| JPS595131Y2 (en) | Internal combustion engine breather device | |
| JPH021466Y2 (en) | ||
| JPS6226565Y2 (en) | ||
| JP2526129Y2 (en) | 4 cycle vertical shaft engine | |
| JPS595130Y2 (en) | Internal combustion engine breather device | |
| JPS603292Y2 (en) | Lubricating oil return device for horizontally opposed engines | |
| JPH0113772Y2 (en) | ||
| JPS581610Y2 (en) | Overhead valve engine lubrication system | |
| JPS5943477Y2 (en) | Piston reciprocating internal combustion engine | |
| JPS603299Y2 (en) | Oil leak prevention device for internal combustion engines | |
| JPH0137128Y2 (en) | ||
| JPH0253512U (en) | ||
| JPH02199208A (en) | Lubricating structure for reciprocative piston engine | |
| JPH02163405A (en) | 4 cycle vertical shaft engine | |
| JPS6021453Y2 (en) | Cam chamber oil sump structure of internal combustion engine | |
| JPS62225711A (en) | Lubricating device for engine |