JP2004278486A - Inclined engine with mechanical governor - Google Patents

Inclined engine with mechanical governor Download PDF

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Publication number
JP2004278486A
JP2004278486A JP2003074282A JP2003074282A JP2004278486A JP 2004278486 A JP2004278486 A JP 2004278486A JP 2003074282 A JP2003074282 A JP 2003074282A JP 2003074282 A JP2003074282 A JP 2003074282A JP 2004278486 A JP2004278486 A JP 2004278486A
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Japan
Prior art keywords
boss
retaining ring
oil
pivot
governor
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Pending
Application number
JP2003074282A
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Japanese (ja)
Inventor
Hiroaki Isojima
宏明 磯島
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Kubota Corp
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Kubota Corp
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Filing date
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Priority to JP2003074282A priority Critical patent/JP2004278486A/en
Publication of JP2004278486A publication Critical patent/JP2004278486A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inclined engine having a mechanical governor that overcomes the problem wherein oil is easy to flow out of the top end of a boss. <P>SOLUTION: The inclined engine has a mechanical governor where an axis bottom 11 of a governor lever axis 5 projects from a boss bottom end 10 into a crankcase 2, and a bottom snap ring 12 is attached to the axis bottom 11 to face the boss bottom end 10 from below. The bottom snap ring 12 is saucer-shaped with a top opening. An oil drop space 13 is placed between the peripheral wall of the bottom snap ring 12 and the peripheral surface of the axis bottom 11. An oil exhaust port 14 is formed in the peripheral wall of the bottom snap ring 12. The oil drop space 13 faces from below between a gap 23 above the bottom snap ring and a gap 15 in the boss. The oil entering the oil drop space 13 through the gap 23 above the bottom snap ring drops herein and is discharged from the oil exhaust port 14. This prevents the oil from being sucked up toward the gap 15 in the boss; thus, the oil is unlikely to flow out of the boss top end 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、メカニカルガバナを備えた傾斜形エンジンに関する。
【0002】
【従来の技術】
従来、メカニカルガバナを備えた傾斜形エンジンの要部として、図3に示すものがある。
この従来の傾斜形エンジンの基本構造は、本発明と同様、次のようになっている。
すなわち、シリンダをクランクケースから斜め上向きに導出し、このクランクケース(52)の天井壁(53)に上下長手状のボス(54)を設け、このボス(54)にガバナレバー枢軸(55)を貫通させ、ボス上端部(56)からクランクケース(52)外にガバナレバー枢軸(55)の枢軸上部(57)を突出させ、この枢軸上部(57)にガバナレバー(58)と上部止め輪(59)とを上下して取り付け、上部止め輪(59)をボス上端部(56)上に載置し、ボス下端部(60)からクランクケース(52)内にガバナレバー枢軸(55)の枢軸下部(61)を突出させ、この枢軸下部(61)に下部止め輪(62)を取り付け、この下部止め輪(62)をボス下端部(60)にその下方から臨ませている。
【0003】
この従来技術では、本発明と異なり、下部止め輪(62)が平板の円環形に形成され、下部止め輪上隙間(73)が薄く広く形成され、この下部止め輪上隙間(73)とボス内隙間(15)とが連続している。
【0004】
【発明が解決しようとする課題】
上記従来技術には、次の問題がある。
《問題》 オイルが、ボス上端部から流出しやすい。
図3に示すように、下部止め輪(62)が平板の円環形に形成され、下部止め輪上隙間(73)が薄く広く形成され、この下部止め輪上隙間(73)とボス内隙間(15)とが連続しているため、この下部止め輪上隙間(73)に侵入したオイルは、ここからは容易に脱落しにくく、エンジンの振動によってガバナレバー枢軸(55)が昇降すると、そのポンピング作用により、ボス内隙間(65)に向けて吸い上げられ、ボス上端部(56)からクランクケース(2)外に流出しやすい。
【0005】
本発明の課題は、上記問題点を解決できるメカニカルガバナを備えた傾斜形エンジンを提供することにある。
【0006】
【課題を解決するための手段】
図2に示すように、シリンダ(1)をクランクケース(2)から斜め上向きに導出し、図1に示すように、このクランクケース(2)の天井壁(3)に上下長手状のボス(4)を設け、このボス(4)にガバナレバー枢軸(5)を貫通させ、ボス上端部(6)からクランクケース(2)外にガバナレバー枢軸(5)の枢軸上部(7)を突出させ、この枢軸上部(7)にガバナレバー(8)と上部止め輪(9)とを上下にして取り付け、上部止め輪(9)をボス上端部(6)上に載置し、ボス下端部(10)からクランクケース(2)内にガバナレバー枢軸(5)の枢軸下部(11)を突出させ、この枢軸下部(11)に下部止め輪(12)を取り付け、この下部止め輪(12)をボス下端部(10)にその下方から臨ませた、メカニカルガバナを備えた傾斜形エンジンにおいて、
下部止め輪(12)を上開口の椀形にし、下部止め輪(12)の周壁と枢軸下部(11)の周面との間に、オイル落下空間(13)を設け、下部止め輪(12)の周壁にオイル排出口(14)を設け、オイル落下空間(13)を下部止め輪(12)とボス内隙間(15)との間にその下方から臨ませた、ことを特徴とするメカニカルガバナを備えた傾斜形エンジン。
【0007】
【発明の効果】
(請求項1の発明)
請求項1の発明は、次の効果を奏する。
《効果》 オイルがボス上端部から流出しにくい。
図1に示すように、下部止め輪(12)を上開口の椀形にし、下部止め輪(12)の周壁と枢軸下部(11)の周面との間に、オイル落下空間(13)を設け、下部止め輪(12)の周壁にオイル排出口(14)を設け、オイル落下空間(13)を下部止め輪(12)とボス内隙間(15)との間にその下方から臨ませたため、ボス内隙間(15)はオイル落下空間(13)により下部止め輪上隙間(23)と分断され、下部止め輪上隙間(23)からオイル落下空間(13)に侵入したオイルは、ここで落下し、オイル排出口(14)から排出される。このため、エンジンの振動によってガバナレバー枢軸(5)が昇降して、そのポンピング作用が働いても、オイルがボス内隙間(15)に向けて吸い上げられることがなくなり、オイルがボス上端部(6)から流出しにくい。
【0008】
【発明の実施の形態】
本発明の実施の形態を図面に基づいて説明する。
図1は要部の縦断面拡大図、図2は全体の縦断面図である。
この実施形態では、単気筒の傾斜ガソリンエンジンについて説明する。
【0009】
このエンジンの概要は、次の通りである。
図2に示すように、シリンダ(1)をクランクケース(2)から斜め上向きに導出している。クランクケース(2)の天井壁(3)に上下長手状のボス(4)を設け、このボス(4)にガバナレバー枢軸(5)を貫通させている。図1に示すように、ガバナレバー枢軸(5)の枢軸下部(11)に椀形にし、エンジンの振動に基づくガバナレバー軸(5)の昇降によるポンピング作用が働いても、オイルがボス上端部(6)から流出するのを防止できるようにしている。
【0010】
エンジンの全体の構成は、次の通りである。
図1に示すように、クランクケース(2)からシリンダ(1)を斜め上向きに導出し、シリンダ(1)の導出端にシリンダヘッド(16)を取り付け、シリンダヘッド(16)にヘッドカバー(17)を取り付けている。クランクケース(2)内には、クランク軸(18)と動弁カム軸(19)とバランサ軸(20)とメカニカルガバナ(21)とを収容している。メカニカルガバナ(21)は、ガバナウェイト(図外)とガバナ力入力部(22)とガバナレバー枢軸(5)とガバナレバー(8)とガバナスプリング(24)と調速レバー(25)とを備えている。ガバナ力入力部(22)はガバナレバー枢軸(5)の下端から横向きに導出させ、その導出端はガバナウェイトと対向させている。ガバナレバー(8)は、ガバナレバー枢軸(5)に取り付けられ、ガバナスプリング(24)を介して調速レバー(25)に連動連結している。シリンダ(1)とクランクケース(2)の上方には、燃料タンク(26)を配置している。エンジン全体は、防振ゴム(27)を介して防振支持されている。
【0011】
ガバナレバー枢軸(5)の支持構造は、次の通りである。
図1に示すように、クランクケース(2)の天井壁(3)に上下長手状のボス(4)を設け、このボス(4)にガバナレバー枢軸(5)を貫通させている。ボス上端部(6)からクランクケース(2)外にガバナレバー枢軸(5)の枢軸上部(7)を突出させ、この枢軸上部(7)にガバナレバー(8)と上部止め輪(9)とを上下にして取り付けている。上部止め輪(9)をボス上端部(6)上に載置している。ボス上端部(6)にはオイルシール(28)を内嵌している。ボス下端部(10)からクランクケース(2)内にガバナレバー枢軸(5)の枢軸下部(11)を突出させ、この枢軸下部(11)に下部止め輪(12)を取り付け、この下部止め輪(12)をボス下端部(10)にその下方から臨ませている。下部止め輪(21)は、枢軸下部(11)に設けた係止部(28)で下方向に対して抜け止めしている。
【0012】
下部留め輪(12)の構造は、次の通りである。
図1に示すように、下部止め輪(12)を上開口の椀形にし、下部止め輪(12)の周壁と枢軸下部(11)の周面との間に、オイル落下空間(13)を設け、下部止め輪(12)の周壁にオイル排出口(14)を設け、オイル落下空間(13)を下部止め輪上隙間(23)とボス内隙間(15)との間にその下方から臨ませている。下部止め輪(12)の上縁はフランジ状に広げている。オイル排出口(14)は等間隔で下部止め輪(12)の周壁の3個所に形成してある。
【図面の簡単な説明】
【図1】本発明の実施形態に係る傾斜エンジンの要部の縦断面拡大図である。
【図2】本発明の実施形態に係る傾斜エンジンの全体の縦断正面図である。
【図3】従来技術の図1相当図である。
【符号の説明】
(1)…シリンダ、(2)…クランクケース、(3)…天井壁、(4)…ボス、(5)…ガバナレバー枢軸、(6)…ボス上端部、(7)…枢軸上部、(8)…ガバナレバー、(9)…上部止め輪、(10)…ボス下端部、(11)…枢軸下部、(12)…下部止め輪、(13)…オイル落下空間、(14)…オイル排出口、(23)…下部止め輪上隙間。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an inclined engine having a mechanical governor.
[0002]
[Prior art]
2. Description of the Related Art FIG.
The basic structure of this conventional inclined engine is as follows, as in the present invention.
That is, the cylinder is extended obliquely upward from the crankcase, a vertically long boss (54) is provided on the ceiling wall (53) of the crankcase (52), and the governor lever pivot (55) passes through the boss (54). Then, the upper part (57) of the governor lever pivot (55) is projected out of the crankcase (52) from the upper end (56) of the boss, and the governor lever (58) and the upper retaining ring (59) are formed on the upper part of the pivot (57). The upper retaining ring (59) is placed on the upper end (56) of the boss, and the lower portion (61) of the governor lever pivot (55) is inserted into the crankcase (52) from the lower end of the boss (60). And a lower retaining ring (62) is attached to the lower part of the pivot (61), and the lower retaining ring (62) faces the lower end (60) of the boss from below.
[0003]
In this prior art, unlike the present invention, the lower retaining ring (62) is formed in a flat ring shape, and the lower retaining ring upper gap (73) is formed thin and wide. The inner gap (15) is continuous.
[0004]
[Problems to be solved by the invention]
The above prior art has the following problems.
《Problem》 Oil easily leaks from the upper end of the boss.
As shown in FIG. 3, the lower retaining ring (62) is formed in a flat ring shape, the upper gap (73) on the lower retaining ring is formed thinner and wider, and the gap (73) on the lower retaining ring and the gap (boss) in the boss are formed. 15), the oil which has entered the lower retaining ring upper gap (73) is difficult to fall off easily from here, and when the governor lever pivot (55) is raised and lowered by the vibration of the engine, its pumping action is reduced. As a result, the water is sucked up toward the boss inner gap (65) and easily flows out of the crankcase (2) from the boss upper end (56).
[0005]
It is an object of the present invention to provide an inclined engine having a mechanical governor capable of solving the above-mentioned problems.
[0006]
[Means for Solving the Problems]
As shown in FIG. 2, the cylinder (1) is extended obliquely upward from the crankcase (2), and as shown in FIG. 1, a vertically long boss (3) is formed on the ceiling wall (3) of the crankcase (2). 4), a governor lever pivot (5) is passed through the boss (4), and a pivot upper part (7) of the governor lever pivot (5) is projected from the boss upper end (6) to the outside of the crankcase (2). Attach the governor lever (8) and the upper retaining ring (9) up and down to the upper part of the pivot (7), place the upper retaining ring (9) on the upper end of the boss (6), and move it from the lower end of the boss (10). The lower part (11) of the governor lever pivot (5) is projected into the crankcase (2), the lower retaining ring (12) is attached to the lower part of the pivot (11), and the lower retaining ring (12) is connected to the lower end of the boss ( 10) Mechanical governor from below In graded engine with,
The lower retaining ring (12) is formed in a bowl shape with an upper opening, and an oil falling space (13) is provided between the peripheral wall of the lower retaining ring (12) and the peripheral surface of the lower pivot (11). ), An oil discharge port (14) is provided on the peripheral wall, and an oil falling space (13) faces from below the gap between the lower retaining ring (12) and the boss inner gap (15). Inclined engine with governor.
[0007]
【The invention's effect】
(Invention of claim 1)
The invention of claim 1 has the following effects.
<< Effect >> It is difficult for oil to flow out from the upper end of the boss.
As shown in FIG. 1, the lower retaining ring (12) has a bowl shape with an upper opening, and an oil drop space (13) is provided between the peripheral wall of the lower retaining ring (12) and the peripheral surface of the lower pivot (11). The oil discharge port (14) is provided on the peripheral wall of the lower retaining ring (12), and the oil falling space (13) is exposed from below the lower retaining ring (12) and the gap (15) in the boss. The gap (15) in the boss is separated from the gap (23) above the lower retaining ring by the oil falling space (13), and the oil that has entered the oil falling space (13) from the gap (23) above the lower retaining ring is here. It falls and is discharged from the oil discharge port (14). For this reason, even if the governor lever pivot (5) moves up and down by the vibration of the engine and its pumping action works, the oil is not sucked up toward the gap (15) in the boss, and the oil is no longer sucked to the boss upper end (6). Hard to leak from
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an enlarged longitudinal sectional view of a main part, and FIG. 2 is an overall longitudinal sectional view.
In this embodiment, a single cylinder lean gasoline engine will be described.
[0009]
The outline of this engine is as follows.
As shown in FIG. 2, the cylinder (1) extends obliquely upward from the crankcase (2). A vertically long boss (4) is provided on the ceiling wall (3) of the crankcase (2), and the governor lever pivot (5) penetrates the boss (4). As shown in FIG. 1, the governor lever shaft (5) is formed in a bowl shape at the lower part (11) of the pivot, and even if the pumping action by the raising and lowering of the governor lever shaft (5) based on the vibration of the engine works, the oil remains at the upper end of the boss (6). ).
[0010]
The overall configuration of the engine is as follows.
As shown in FIG. 1, the cylinder (1) is extended obliquely upward from the crankcase (2), a cylinder head (16) is attached to the leading end of the cylinder (1), and a head cover (17) is attached to the cylinder head (16). Is installed. The crankcase (2) houses a crankshaft (18), a valve gear camshaft (19), a balancer shaft (20), and a mechanical governor (21). The mechanical governor (21) includes a governor weight (not shown), a governor force input section (22), a governor lever pivot (5), a governor lever (8), a governor spring (24), and a governing lever (25). . The governor force input section (22) is led out laterally from the lower end of the governor lever pivot (5), and the leading end faces the governor weight. The governor lever (8) is attached to the governor lever pivot (5), and is operatively connected to the governing lever (25) via a governor spring (24). A fuel tank (26) is arranged above the cylinder (1) and the crankcase (2). The entire engine is supported by vibration isolation through a rubber cushion (27).
[0011]
The support structure for the governor lever pivot (5) is as follows.
As shown in FIG. 1, a vertically long boss (4) is provided on a ceiling wall (3) of a crankcase (2), and a governor lever pivot (5) is passed through the boss (4). The upper part (7) of the governor lever pivot (5) is projected out of the crankcase (2) from the boss upper end part (6), and the governor lever (8) and the upper retaining ring (9) are moved up and down on the upper part of the pivot (7). And installed. An upper retaining ring (9) rests on the boss upper end (6). An oil seal (28) is fitted in the boss upper end (6). The lower part (11) of the governor lever pivot (5) is projected from the lower end of the boss (10) into the crankcase (2). 12) faces the lower end of the boss (10) from below. The lower retaining ring (21) is prevented from falling downward by a locking portion (28) provided at the lower part of the pivot (11).
[0012]
The structure of the lower retaining ring (12) is as follows.
As shown in FIG. 1, the lower retaining ring (12) has a bowl shape with an upper opening, and an oil drop space (13) is provided between the peripheral wall of the lower retaining ring (12) and the peripheral surface of the lower pivot (11). An oil discharge port (14) is provided on the peripheral wall of the lower retaining ring (12), and an oil falling space (13) is provided between the lower retaining ring upper gap (23) and the boss internal gap (15) from below. Not. The upper edge of the lower retaining ring (12) is expanded like a flange. The oil discharge ports (14) are formed at three positions on the peripheral wall of the lower retaining ring (12) at equal intervals.
[Brief description of the drawings]
FIG. 1 is an enlarged longitudinal sectional view of a main part of a tilt engine according to an embodiment of the present invention.
FIG. 2 is an overall vertical sectional front view of the tilt engine according to the embodiment of the present invention.
FIG. 3 is a diagram corresponding to FIG. 1 of the prior art.
[Explanation of symbols]
(1) Cylinder, (2) Crank case, (3) Ceiling wall, (4) Boss, (5) Governor lever pivot, (6) Upper end of boss, (7) Upper pivot, (8) ) Governor lever, (9) upper retaining ring, (10) lower end of boss, (11) lower pivot, (12) lower retaining ring, (13) oil falling space, (14) oil outlet , (23) ... clearance above the lower retaining ring.

Claims (1)

シリンダ(1)をクランクケース(2)から斜め上向きに導出し、このクランクケース(2)の天井壁(3)に上下長手状のボス(4)を設け、このボス(4)にガバナレバー枢軸(5)を貫通させ、ボス上端部(6)からクランクケース(2)外にガバナレバー枢軸(5)の枢軸上部(7)を突出させ、この枢軸上部(7)にガバナレバー(8)と上部止め輪(9)とを上下にして取り付け、上部止め輪(9)をボス上端部(6)上に載置し、ボス下端部(10)からクランクケース(2)内にガバナレバー枢軸(5)の枢軸下部(11)を突出させ、この枢軸下部(11)に下部止め輪(12)を取り付け、この下部止め輪(12)をボス下端部(10)にその下方から臨ませた、メカニカルガバナを備えた傾斜形エンジンにおいて、
下部止め輪(12)を上開口の椀形にし、下部止め輪(12)の周壁と枢軸下部(11)の周面との間に、オイル落下空間(13)を設け、下部止め輪(12)の周壁にオイル排出口(14)を設け、オイル落下空間(13)を下部止め輪上隙間(23)とボス内隙間(15)との間にその下方から臨ませた、ことを特徴とするメカニカルガバナを備えた傾斜形エンジン。
The cylinder (1) is extended obliquely upward from the crankcase (2), a vertically long boss (4) is provided on the ceiling wall (3) of the crankcase (2), and the governor lever pivot ( 5), the upper part (7) of the governor lever pivot (5) is projected out of the crankcase (2) from the upper end part (6) of the boss, and the governor lever (8) and the upper retaining ring are inserted into the upper part of the pivot (7). The upper retaining ring (9) is mounted on the upper end (6) of the boss, and the governor lever pivot (5) is inserted into the crankcase (2) from the lower end of the boss (10). A lower part (11) is protruded, a lower retaining ring (12) is attached to the lower part of the pivot (11), and a mechanical governor is provided with the lower retaining ring (12) facing the lower end (10) of the boss from below. In a tilted engine,
The lower retaining ring (12) is formed in a bowl shape with an upper opening, and an oil falling space (13) is provided between the peripheral wall of the lower retaining ring (12) and the peripheral surface of the lower pivot (11). ), An oil discharge port (14) is provided on the peripheral wall, and an oil fall space (13) is formed between the clearance (23) above the lower retaining ring and the clearance (15) in the boss from below. Inclined engine with mechanical governor.
JP2003074282A 2003-03-18 2003-03-18 Inclined engine with mechanical governor Pending JP2004278486A (en)

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JP2003074282A Pending JP2004278486A (en) 2003-03-18 2003-03-18 Inclined engine with mechanical governor

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009275600A (en) * 2008-05-14 2009-11-26 Yanmar Co Ltd Hydraulic governor
CN102734465A (en) * 2011-03-31 2012-10-17 株式会社久保田 Sealing device for input operation rod shaft of engine
JP2012211633A (en) * 2011-03-31 2012-11-01 Kubota Corp Sealing device of input operation lever shaft of engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009275600A (en) * 2008-05-14 2009-11-26 Yanmar Co Ltd Hydraulic governor
CN102734465A (en) * 2011-03-31 2012-10-17 株式会社久保田 Sealing device for input operation rod shaft of engine
JP2012211633A (en) * 2011-03-31 2012-11-01 Kubota Corp Sealing device of input operation lever shaft of engine
CN102734465B (en) * 2011-03-31 2016-03-30 株式会社久保田 The input operation bar shaft seal of motor

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