JP2015031231A - Bearing device of rotating shaft of engine - Google Patents

Bearing device of rotating shaft of engine Download PDF

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Publication number
JP2015031231A
JP2015031231A JP2013162850A JP2013162850A JP2015031231A JP 2015031231 A JP2015031231 A JP 2015031231A JP 2013162850 A JP2013162850 A JP 2013162850A JP 2013162850 A JP2013162850 A JP 2013162850A JP 2015031231 A JP2015031231 A JP 2015031231A
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Prior art keywords
thrust bearing
bearing plate
rotating shaft
engine
input wheel
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JP6066862B2 (en
Inventor
小山　秀行
Hideyuki Koyama
秀行 小山
良憲 田中
Yoshinori Tanaka
良憲 田中
寛 鍬崎
Hiroshi Kuwasaki
寛 鍬崎
直也 櫻井
Naoya Sakurai
直也 櫻井
藤井　聡
Satoshi Fujii
聡 藤井
後藤　英之
Hideyuki Goto
英之 後藤
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Kubota Corp
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Kubota Corp
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  • Valve-Gear Or Valve Arrangements (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Sliding-Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a bearing device of a rotating shaft of an engine, which can suppress wear of a boss part 5a of an input ring 5 and a thrust bearing plate 4.SOLUTION: A bearing device comprises a radial bearing hole 2 provided in an engine frame wall 1, a rotating shaft 3 and a thrust bearing plate 4. A journal part 3a of the rotating shaft 3 is internally fitted to the radial bearing hole 2. An input ring 5 is attached to an end 3b of the rotating shaft 3. The thrust bearing plate 4 is fitted in a gap 6 between a boss part 5a of the input ring 5 and the journal part 3a of the rotating shaft 3. The thrust bearing plate 4 is attached to the engine frame wall 1. A concave bends 4a are formed in the peripheral surface of the thrust bearing plate 4. In a predetermined attaching attitude of the thrust bearing plate 4, the concave bend 4a works as a downward concave bend 4b which is concaved downward in the upper peripheral surface of the thrust bearing plate 4, and lubrication oil 7 collected in the downward concave bend 4b and overflowing to an input ring 5 side flows down between the boss part 5a of the input ring 5 and the thrust bearing plate 4.

Description

本発明は、エンジンの回転軸の軸受装置に関し、詳しくは、入力輪のボス部とスラスト軸受板との磨耗を抑制することができるエンジンの回転軸の軸受装置に関する。   The present invention relates to a bearing device for a rotating shaft of an engine, and more particularly to a bearing device for a rotating shaft of an engine that can suppress wear of a boss portion of an input wheel and a thrust bearing plate.

従来、エンジンの回転軸の軸受装置として、次のものがある(例えば、特許文献１参照)。
図３(Ａ)(Ｂ)に示すように、エンジン機壁(１０１)に設けられたラジアル軸受孔(１０２)と、回転軸(１０３)と、スラスト軸受板(１０４)とを備え、回転軸(１０３)のジャーナル部(１０３ａ)がラジアル軸受孔(１０２)に内嵌され、回転軸(１０３)の端部(１０３ｂ)に入力輪(１０５)が取り付けられ、入力輪(１０５)のボス部(１０５ａ)と回転軸(１０３)のジャーナル部(１０３ａ)との隙間(１０６)にスラスト軸受板(１０４)が嵌入され、スラスト軸受板(１０４)がエンジン機壁(１０１)に取り付けられた、エンジンの回転軸の軸受装置。
なお、図中の符号(１０８)は取り付けボルトである。 Conventionally, there is the following as a bearing device for an engine rotation shaft (see, for example, Patent Document 1).
As shown in FIGS. 3A and 3B, a radial bearing hole (102) provided in the engine machine wall (101), a rotating shaft (103), and a thrust bearing plate (104) are provided. The journal portion (103a) of (103) is fitted in the radial bearing hole (102), the input ring (105) is attached to the end portion (103b) of the rotating shaft (103), and the boss portion of the input ring (105). The thrust bearing plate (104) is inserted into the gap (106) between the journal portion (103a) of the rotating shaft (103) and the thrust shaft (103), and the thrust bearing plate (104) is attached to the engine machine wall (101). Bearing device for engine rotation shaft.
Reference numeral (108) in the figure denotes a mounting bolt.

この種の軸受装置によれば、簡易な構造で回転軸の軸受ができる利点がある。   According to this type of bearing device, there is an advantage that a rotary shaft bearing can be obtained with a simple structure.

しかし、この従来技術では、図３(Ａ)(Ｂ)(Ｃ)に示すように、入力輪(１０５)のボス部(１０５ａ)とスラスト軸受板(１０４)との間に潤滑油を集中的に供給する手段がないため、問題がある。   However, in this prior art, as shown in FIGS. 3 (A), (B) and (C), lubricating oil is concentrated between the boss portion (105a) of the input wheel (105) and the thrust bearing plate (104). There is a problem because there is no means to supply to.

特開２００２−２３５７２８号公報(図２(Ａ)(Ｂ)参照)JP 2002-235728 A (see FIGS. 2A and 2B)

《問題点》 入力輪のボス部とスラスト軸受板とが磨耗しやすい。
図３(Ａ)(Ｂ)(Ｃ)に示すように、入力輪(１０５)のボス部(１０５ａ)とスラスト軸受板(１０４)との間に潤滑油を集中的に供給する手段がないため、入力輪(１０５)のボス部(１０５ａ)とスラスト軸受板(１０４)とが潤滑不足となり、これらが磨耗しやすい。 <Problem> The boss of the input wheel and the thrust bearing plate are subject to wear.
As shown in FIGS. 3A, 3B, and 3C, there is no means for intensively supplying lubricating oil between the boss portion (105a) of the input wheel (105) and the thrust bearing plate (104). The boss portion (105a) of the input wheel (105) and the thrust bearing plate (104) are insufficiently lubricated, and are easily worn.

本発明の課題は、入力輪のボス部とスラスト軸受板との磨耗を抑制することができるエンジンの回転軸の軸受装置を提供することにある。   The subject of this invention is providing the bearing apparatus of the rotating shaft of an engine which can suppress abrasion with the boss | hub part of an input wheel, and a thrust bearing board.

本発明の発明者らは、研究の結果、スラスト軸受板の上周面に下向きに凹入された下向き凹入湾曲部を形成すれば、この下向き凹入湾曲部に溜まって入力輪側に溢れた潤滑油を、入力輪のボス部とスラスト軸受板との間に集中的に供給することができることを発見し、この発明に至った。   As a result of research, the inventors of the present invention have formed a downward concave curved portion that is recessed downward on the upper peripheral surface of the thrust bearing plate, and accumulates in the downward concave curved portion and overflows to the input wheel side. As a result, it was discovered that the lubricating oil can be supplied in a concentrated manner between the boss portion of the input wheel and the thrust bearing plate.

請求項１に係る発明の発明特定事項は、次の通りである。
図１(Ａ)(Ｂ)に例示するように、エンジン機壁(１)に設けられたラジアル軸受孔(２)と、回転軸(３)と、スラスト軸受板(４)とを備え、回転軸(３)のジャーナル部(３ａ)がラジアル軸受孔(２)に内嵌され、回転軸(３)の端部(３ｂ)に入力輪(５)が取り付けられ、入力輪(５)のボス部(５ａ)と回転軸(３)のジャーナル部(３ａ)との隙間(６)にスラスト軸受板(４)が嵌入され、スラスト軸受板(４)がエンジン機壁(１)に取り付けられた、エンジンの回転軸の軸受装置において、
図１(Ｃ)(Ｄ)、図２(Ａ)(Ｂ)(Ｃ)に例示するように、スラスト軸受板(４)の周面に凹入湾曲部(４ａ)が形成され、スラスト軸受板(４)の所定の取り付け姿勢により、凹入湾曲部(４ａ)がスラスト軸受板(４)の上周面で下向きに凹入された下向き凹入湾曲部(４ｂ)とされ、この下向き凹入湾曲部(４ｂ)に溜まって入力輪(５)側に溢れた潤滑油(７)が入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に流れ落ちるように構成されている、ことを特徴とするエンジンの回転軸の軸受装置。 Invention specific matters of the invention according to claim 1 are as follows.
As illustrated in FIGS. 1 (A) and 1 (B), a radial bearing hole (2) provided in the engine machine wall (1), a rotating shaft (3), and a thrust bearing plate (4) are provided for rotation. The journal portion (3a) of the shaft (3) is fitted into the radial bearing hole (2), the input ring (5) is attached to the end portion (3b) of the rotating shaft (3), and the boss of the input ring (5) The thrust bearing plate (4) is inserted into the gap (6) between the portion (5a) and the journal portion (3a) of the rotating shaft (3), and the thrust bearing plate (4) is attached to the engine machine wall (1). In a bearing device for an engine rotation shaft,
As illustrated in FIGS. 1 (C) (D), 2 (A), (B), and (C), a concave curved portion (4a) is formed on the peripheral surface of the thrust bearing plate (4), and the thrust bearing plate is formed. According to the predetermined mounting posture of (4), the concave curved portion (4a) is formed as a downward concave curved portion (4b) recessed downward on the upper peripheral surface of the thrust bearing plate (4). The lubricating oil (7) accumulated in the curved portion (4b) and overflowing to the input wheel (5) side flows down between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4). A bearing device for a rotating shaft of an engine.

(請求項１に係る発明)
請求項１に係る発明は、次の効果を奏する。
《効果》 入力輪のボス部とジャーナル部との磨耗を抑制することができる。
図１(Ｃ)(Ｄ)、図２(Ａ)(Ｂ)(Ｃ)に例示するように、スラスト軸受板(４)の周面に凹入湾曲部(４ａ)が形成され、スラスト軸受板(４)の所定の取り付け姿勢により、凹入湾曲部(４ａ)がスラスト軸受板(４)の上周面で下向きに凹入された下向き凹入湾曲部(４ｂ)とされ、この下向き凹入湾曲部(４ｂ)に溜まって入力輪(５)側に溢れた潤滑油(７)が入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に流れ落ちるように構成されているので、入力輪(５)の周囲のオイルミストが凝縮して下向き凹入湾曲部(４ｂ)に溜まり、溜まった潤滑油(７)が入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に集中的に供給され、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との磨耗を抑制することができる。 (Invention of Claim 1)
The invention according to claim 1 has the following effects.
<Effect> It is possible to suppress wear of the boss portion of the input wheel and the journal portion.
As illustrated in FIGS. 1 (C) (D), 2 (A), (B), and (C), a concave curved portion (4a) is formed on the peripheral surface of the thrust bearing plate (4), and the thrust bearing plate is formed. According to the predetermined mounting posture of (4), the concave curved portion (4a) is formed as a downward concave curved portion (4b) recessed downward on the upper peripheral surface of the thrust bearing plate (4). The lubricating oil (7) accumulated in the curved portion (4b) and overflowing to the input wheel (5) side flows down between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4). As a result, the oil mist around the input wheel (5) condenses and accumulates in the downward concave curved portion (4b), and the accumulated lubricating oil (7) becomes the boss portion (5a) of the input wheel (5) and the thrust. It is supplied intensively between the bearing plate (4) and the wear of the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4) can be suppressed.

(請求項２に係る発明)
請求項２に係る発明は、請求項１に係る発明の効果に加え、次の効果を奏する。
《効果》 入力輪のボス部とジャーナル部との磨耗を抑制する機能が高い。
図１(Ｄ)に例示するように、下向き凹入湾曲部(４ｂ)のうち、入力輪(５)側の縁部(４ｃ)は面取りされているので、下向き凹入湾曲部(４ｂ)に溜まった潤滑油(７)は、面取りされた縁部(４ｃ)に沿って入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間にスムーズに流れ落ち、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との磨耗を抑制する機能が高い。 (Invention of Claim 2)
The invention according to claim 2 has the following effect in addition to the effect of the invention according to claim 1.
<Effect> The function of suppressing wear between the boss portion of the input wheel and the journal portion is high.
As illustrated in FIG. 1D, the edge (4c) on the input wheel (5) side of the downward concave curved portion (4b) is chamfered, so that the downward concave curved portion (4b) The accumulated lubricating oil (7) flows smoothly between the boss portion (5a) of the input ring (5) and the thrust bearing plate (4) along the chamfered edge (4c), and the input ring (5 ) Has a high function of suppressing wear of the boss portion (5a) and the thrust bearing plate (4).

(請求項３に係る発明)
請求項３に係る発明は、請求項１または請求項２に係る発明の効果に加え、次の効果を奏する。
《効果》 異なる機種でも、凹入湾曲部を適正な下向きの凹入姿勢とすることができる。
図１(Ｃ)、図２(Ａ)(Ｂ)(Ｃ)に例示するように、外周板部(４ｅ)と取り付け板部(４ｆ)とに跨る４箇所に凹入湾曲部(４ａ)がそれぞれ形成され、スラスト軸受板(４)の取り付け姿勢に応じて、４箇所の凹入湾曲部(４ａ)のいずれかが、潤滑油(７)が溜まる下向き凹入湾曲部(４ｂ)とされるので、スラスト軸受板(４)の取り付け姿勢が異なる複数の機種でスラスト軸受板(４)を共用することができる。 (Invention of Claim 3)
The invention according to claim 3 has the following effect in addition to the effect of the invention according to claim 1 or claim 2.
<Effect> Even with different models, the concave curved portion can be in a proper downward concave posture.
As illustrated in FIGS. 1 (C), 2 (A), 2 (B), and 2 (C), there are concave curved portions (4a) at four locations straddling the outer peripheral plate portion (4e) and the mounting plate portion (4f). Depending on the mounting orientation of the thrust bearing plate (4), any one of the four concave curved portions (4a) is a downward concave curved portion (4b) in which the lubricating oil (7) is accumulated. Therefore, the thrust bearing plate (4) can be shared by a plurality of models having different mounting postures of the thrust bearing plate (4).

(請求項４に係る発明)
請求項４に係る発明は、請求項１から請求項３のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 スラスト軸受板の誤組み付けを防止することができる。
図１(Ｃ)、図２(Ａ)(Ｂ)(Ｃ)に例示するように、スラスト軸受板(４)は、その中心軸線(４ｇ)と平行な向きに見て、点対称形状とされているので、中心軸線(４ｇ)を回転中心としてスラスト軸受板(４)を１８０°回転させて取り付けても、スラスト軸受板(４)は同じ取り付け姿勢となり、スラスト軸受板(４)の誤組み付けを防止することができる。 (Invention of Claim 4)
The invention according to claim 4 has the following effects in addition to the effects of the invention according to any one of claims 1 to 3.
<Effect> It is possible to prevent erroneous assembly of the thrust bearing plate.
As illustrated in FIGS. 1C, 2A, 2B, and 2C, the thrust bearing plate 4 is point-symmetrical when viewed in a direction parallel to the central axis 4g. Therefore, even if the thrust bearing plate (4) is rotated by 180 ° with the central axis (4g) as the center of rotation, the thrust bearing plate (4) has the same mounting posture, and the thrust bearing plate (4) is misassembled. Can be prevented.

(請求項５に係る発明)
請求項５に係る発明は、請求項１から請求項４のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 スラスト軸受板の誤組み付けを防止することができる。
図１(Ｂ)(Ｄ)に例示するように、スラスト軸受板(４)は、表裏対称形状とされているので、スラスト軸受板(４)を表裏逆で取り付けても、スラスト軸受板(４)は同じ取り付け姿勢となり、スラスト軸受板(４)の誤組み付けを防止することができる。 (Invention according to claim 5)
The invention according to claim 5 has the following effects in addition to the effects of the invention according to any one of claims 1 to 4.
<Effect> It is possible to prevent erroneous assembly of the thrust bearing plate.
As illustrated in FIGS. 1B and 1D, the thrust bearing plate (4) has a symmetrical shape, so that even if the thrust bearing plate (4) is mounted upside down, the thrust bearing plate (4 ) Have the same mounting posture, and it is possible to prevent erroneous assembly of the thrust bearing plate (4).

(請求項６に係る発明)
請求項６に係る発明は、請求項１から請求項５のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 入力輪のボス部とジャーナル部との磨耗を抑制する機能が高い。
図２(Ａ)に例示するように、下向き凹入湾曲部(４ｂ)から入力輪(５)側に溢れた潤滑油(７)が、入力輪(５)のボス部(５ａ)の回転と螺旋溝(４ｈ)の案内で、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間を回転軸(３)に向かって推進するように構成されているので、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に多くの潤滑油(７)が導入され、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との磨耗を抑制する機能が高い。 (Invention of Claim 6)
The invention according to claim 6 has the following effects in addition to the effects of the invention according to any one of claims 1 to 5.
<Effect> The function of suppressing wear between the boss portion of the input wheel and the journal portion is high.
As illustrated in FIG. 2 (A), the lubricating oil (7) overflowing from the downward concave curved portion (4b) to the input wheel (5) side causes the rotation of the boss portion (5a) of the input wheel (5). The guide is guided by the spiral groove (4h) so as to propel between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4) toward the rotating shaft (3). A lot of lubricating oil (7) is introduced between the boss part (5a) of the ring (5) and the thrust bearing plate (4), and the boss part (5a) of the input wheel (5) and the thrust bearing plate (4). It has a high function to suppress wear.

(請求項７に係る発明)
請求項７に係る発明は、請求項１から請求項６のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 入力輪のボス部とジャーナル部との磨耗を抑制する機能が高い。
図２(Ｂ)に例示するように、入力輪(５)のボス部(５ａ)と当接するスラスト軸受板(４)の端面(４ｉ)にオイル保持溝(４ｊ)が形成され、下向き凹入湾曲部(４ｂ)から入力輪(５)側に溢れた潤滑油(７)が、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間でオイル保持溝(４ｊ)に保持されるように構成されているので、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に多くの潤滑油(７)が保持され、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との磨耗を抑制する機能が高い。 (Invention of Claim 7)
The invention according to claim 7 has the following effects in addition to the effects of the invention according to any one of claims 1 to 6.
<Effect> The function of suppressing wear between the boss portion of the input wheel and the journal portion is high.
As illustrated in FIG. 2B, an oil retaining groove (4j) is formed on the end surface (4i) of the thrust bearing plate (4) that contacts the boss portion (5a) of the input ring (5), and is depressed downward. Lubricating oil (7) overflowing from the curved portion (4b) to the input wheel (5) side causes an oil retaining groove (4j) between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4). Therefore, a lot of lubricating oil (7) is held between the boss portion (5a) of the input ring (5) and the thrust bearing plate (4), and the input ring (5). The function of suppressing wear between the boss portion (5a) and the thrust bearing plate (4) is high.

(請求項８に係る発明)
請求項８に係る発明は、請求項１から請求項７のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 入力輪のボス部とジャーナル部との磨耗を抑制する機能が高い。
スラスト軸受板(４)が焼結合金で形成され、下向き凹入湾曲部(４ｂ)から入力輪(５)側に溢れた潤滑油(７)が、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間で焼結合金の表面組織に保持されるように構成されているので、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に多くの潤滑油(７)が保持され、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との磨耗を抑制する機能が高い。 (Invention of Claim 8)
The invention according to claim 8 has the following effects in addition to the effects of the invention according to any one of claims 1 to 7.
<Effect> The function of suppressing wear between the boss portion of the input wheel and the journal portion is high.
The thrust bearing plate (4) is made of a sintered alloy, and the lubricating oil (7) overflowing from the downward concave curved portion (4b) to the input wheel (5) side is the boss portion (5a) of the input wheel (5). Between the boss portion (5a) of the input ring (5) and the thrust bearing plate (4). A large amount of lubricating oil (7) is held on the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4) is highly suppressed.

本発明の実施形態に係るエンジンの回転軸の軸受装置を説明する図で、図１(Ａ)は回転軸とその周辺部分の縦断側面図、図１(Ｂ)は図１(Ａ)のＢ矢視部分の拡大図、図１(Ｃ)は図１(Ａ)のＣ−Ｃ線断面図、図１(Ｄ)は図１(Ｃ)のＤ−Ｄ線断面拡大図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram for explaining a bearing device for a rotating shaft of an engine according to an embodiment of the present invention. FIG. 1 (A) is a longitudinal side view of the rotating shaft and its peripheral portion, 1C is a cross-sectional view taken along the line CC of FIG. 1A, and FIG. 1D is an enlarged cross-sectional view taken along the line DD of FIG. 1C. 図１のスラスト軸受板の各種変形例の説明図で、図２(Ａ)は第１変形例、図２(Ｂ)は第２変形例、図２(Ｃ)は第３変形例である。FIG. 2A is an explanatory diagram of various modifications of the thrust bearing plate of FIG. 1, FIG. 2A is a first modification, FIG. 2B is a second modification, and FIG. 2C is a third modification. 従来技術に係るエンジンの回転軸の軸受装置を説明する図で、図３(Ａ)は回転軸とその周辺部分の縦断側面図、図３(Ｂ)は図３(Ａ)のＢ矢視部分の拡大図、図３(Ｃ)は図３(Ａ)のＣ−Ｃ線断面図である。FIG. 3A is a view for explaining a bearing device for a rotating shaft of an engine according to the prior art, FIG. 3A is a longitudinal side view of the rotating shaft and its peripheral portion, and FIG. 3B is a portion viewed from arrow B in FIG. FIG. 3C is a cross-sectional view taken along the line CC of FIG. 3A.

図１、図２は本発明の実施形態に係るエンジンの回転軸の軸受装置を説明する図であり、この実施形態では、ディーゼルエンジンの動弁カム軸の軸受装置について説明する。   FIG. 1 and FIG. 2 are diagrams for explaining a bearing device for a rotating shaft of an engine according to an embodiment of the present invention. In this embodiment, a bearing device for a valve camshaft of a diesel engine will be explained.

図１(Ａ)(Ｂ)に示すように、エンジン機壁(１)に設けられたラジアル軸受孔(２)と、回転軸(３)と、スラスト軸受板(４)とを備え、回転軸(３)のジャーナル部(３ａ)がラジアル軸受孔(２)に内嵌され、回転軸(３)の端部(３ｂ)に入力輪(５)が取り付けられ、入力輪(５)のボス部(５ａ)と回転軸(３)のジャーナル部(３ａ)との隙間(６)にスラスト軸受板(４)が嵌入され、スラスト軸受板(４)がエンジン機壁(１)に取り付けられている。   As shown in FIGS. 1A and 1B, a radial bearing hole (2) provided in the engine machine wall (1), a rotating shaft (3), and a thrust bearing plate (4) are provided. The journal part (3a) of (3) is fitted into the radial bearing hole (2), the input ring (5) is attached to the end part (3b) of the rotating shaft (3), and the boss part of the input ring (5) The thrust bearing plate (4) is fitted into the gap (6) between the journal portion (3a) of the rotary shaft (3) and the thrust bearing plate (4) is attached to the engine machine wall (1). .

図１(Ａ)(Ｂ)に示すように、エンジン機壁(１)はシリンダブロックの壁である。回転軸(３)は動弁カム軸である。回転軸(３)のジャーナル部(３ａ)の周面には潤滑油圧送通路(３ｃ)の通路出口(３ｄ)が開口され、この通路出口(３ｄ)が回転軸(３)のジャーナル部(３ａ)とラジアル軸受孔(２)との隙間(１０)に連通している。
入力輪(５)はハスバ歯車である。入力輪(５)は、クランクギヤ(図外)やアイドルギヤ(図外)とともに調時伝動装置(図外)を構成し、この調時伝動装置を介してクランク軸(図外)で回転軸(３)を駆動する。調時伝動装置を構成するギヤはいずれもハスバ歯車で、入力輪(５)と噛合するクランクギヤ寄りのアイドルギヤで入力輪(５)が回されている間、入力輪(５)は、歯の傾斜により、噛合するアイドルギヤからスラスト軸受板(４)近接方向のスラスト力(５ｂ)を受け、入力輪(５)のボス部(５ａ)がスラスト軸受板(４)で受け止められる。また、クランク軸の減速により入力輪(５)の回転が噛合するアイドルギヤよりも速くなると、入力輪(５)は歯の傾きにより、噛合するアイドルギヤからスラスト軸受板(４)離間方向のスラスト力(５ｃ)を受け、回転軸(３)のジャーナル部(３ａ)がスラスト軸受板(４)で受け止められる。
調時伝動装置は、シリンダブロックの壁に取り付けられた調時伝動ケース(図外)に収容されている。
潤滑油圧送通路(３ｃ)から回転軸(３)のジャーナル部(３ａ)とラジアル軸受孔(２)との隙間(１０)に供給された潤滑油(７)は、この隙間(１０)から調時伝動ケース内にリークされ、調時伝動装置を構成するハスバ歯車に当たってオイルミストとなる。
スラスト軸受板(４)は、板金製の板材で、一対の取り付けボルト(８)(８)でエンジン機壁(１)に取り付けられている。 As shown in FIGS. 1A and 1B, the engine machine wall (1) is a wall of a cylinder block. The rotating shaft (3) is a valve operating cam shaft. A passage outlet (3d) of the lubricating oil pressure supply passage (3c) is opened on the peripheral surface of the journal portion (3a) of the rotating shaft (3), and this passage outlet (3d) is connected to the journal portion (3a) of the rotating shaft (3). ) And the radial bearing hole (2).
The input wheel (5) is a helical gear. The input wheel (5), together with a crank gear (not shown) and an idle gear (not shown), constitutes a timing transmission device (not shown), and the crankshaft (not shown) rotates through the timing transmission device. Drive (3). The gears constituting the timing transmission device are all helical gears, and while the input wheel (5) is rotated by an idle gear near the crank gear meshing with the input wheel (5), the input wheel (5) Due to the inclination, the thrust force (5b) in the proximity of the thrust bearing plate (4) is received from the meshing idle gear, and the boss portion (5a) of the input wheel (5) is received by the thrust bearing plate (4). Further, when the rotation of the input wheel (5) becomes faster than the meshed idle gear due to the deceleration of the crankshaft, the input wheel (5) is thrust from the meshed idle gear to the thrust bearing plate (4) away from the meshed idle gear due to the inclination of the teeth. Upon receiving the force (5c), the journal portion (3a) of the rotating shaft (3) is received by the thrust bearing plate (4).
The timing transmission device is accommodated in a timing transmission case (not shown) attached to the wall of the cylinder block.
The lubricating oil (7) supplied from the lubricating oil pressure supply passage (3c) to the gap (10) between the journal portion (3a) of the rotating shaft (3) and the radial bearing hole (2) is adjusted from this gap (10). It leaks in the hour transmission case and hits the helical gear constituting the timing transmission device to become oil mist.
The thrust bearing plate (4) is a sheet metal plate and is attached to the engine machine wall (1) with a pair of mounting bolts (8) and (8).

図１(Ｃ)(Ｄ)に示すように、スラスト軸受板(４)の周面に凹入湾曲部(４ａ)が形成され、スラスト軸受板(４)の所定の取り付け姿勢により、凹入湾曲部(４ａ)がスラスト軸受板(４)の上周面で下向きに凹入された下向き凹入湾曲部(４ｂ)とされ、この下向き凹入湾曲部(４ｂ)に溜まって入力輪(５)側に溢れた潤滑油(７)が入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に流れ落ちるように構成されている。   As shown in FIGS. 1C and 1D, a concave curved portion 4a is formed on the circumferential surface of the thrust bearing plate 4 and the concave curved portion is formed according to a predetermined mounting posture of the thrust bearing plate 4. The portion (4a) is a downward concave curved portion (4b) that is concaved downward on the upper peripheral surface of the thrust bearing plate (4), and is accumulated in the downward concave curved portion (4b) to be accumulated in the input wheel (5). The lubricating oil (7) overflowing to the side is configured to flow down between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4).

図１(Ｄ)に示すように、下向き凹入湾曲部(４ｂ)のうち、入力輪(５)側の縁部(４ｃ)は面取りされている。下向き凹入湾曲部(４ｂ)のうち、エンジン機壁(１)側の縁部(４ｋ)も面取りされている。
図１(Ｄ)に示すように、スラスト軸受板(４)の外周板部(４ｅ)の周面(９)のうち、下向き凹入湾曲部(４ｂ)以外の部分の両縁部(９ａ)(９ｂ)も面取りされているが、下向き凹入湾曲部(４ｂ)の両縁部(４ｃ)(４ｋ)は、下向き凹入湾曲部(４ｂ)以外の部分の両縁部(９ａ)(９ｂ)よりも大きな曲率半径で大きく面取りしておくのが望ましい。スラスト軸受板(４)を表裏どちらの向きで取り付けても、下向き凹入湾曲部(４ｂ)の入力輪(５)側の縁部にその両脇の縁部よりもエンジン機壁(１)側に大きく後退した窪みが形成され、下向き凹入湾曲部(４ｂ)に溜まった潤滑油(７)が、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に流れ落ちやすくなるからである。
このような観点からは、下向き凹入湾曲部(４ｂ)の両縁部(４ｃ)(４ｋ)をより大きな曲率半径で大きく面取りすることに代えて、或いは、より大きな曲率半径で大きく面取りすることに加え、図１(Ｃ)(Ｄ)に示すように、下向き凹入湾曲部(４ｂ)の両縁部(４ｃ)(４ｋ)に潤滑油(７)の潤滑油流下案内溝(４ｍ)を形成し、この潤滑油流下案内溝(４ｍ)の案内で下向き凹入湾曲部(４ｂ)に溜まった潤滑油(７)が、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に流れ落ちるようにしておいてもよい。 As shown in FIG. 1 (D), the edge portion (4c) on the input wheel (5) side of the downward concave curved portion (4b) is chamfered. Of the downward concave curved portion (4b), the edge portion (4k) on the engine machine wall (1) side is also chamfered.
As shown in FIG. 1D, both edges (9a) of the peripheral surface (9) of the outer peripheral plate portion (4e) of the thrust bearing plate (4) other than the downward concave curved portion (4b). (9b) is also chamfered, but both edges (4c) and (4k) of the downward concave curved portion (4b) are both edge portions (9a) and (9b) of portions other than the downward concave curved portion (4b). It is desirable to chamfer with a larger radius of curvature than Regardless of the orientation of the thrust bearing plate (4), the engine wall (1) side is closer to the edge on the input wheel (5) side of the downward recessed curved part (4b) than the edges on both sides. A recess that is greatly retracted is formed, and the lubricating oil (7) accumulated in the downward concave curved portion (4b) flows down between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4). This is because it becomes easier.
From such a point of view, instead of chamfering both edges (4c) and (4k) of the downward indented curved portion (4b) with a larger radius of curvature, or chamfering with a larger radius of curvature. In addition, as shown in FIGS. 1 (C) and 1 (D), the lubricating oil flow guide grooves (4m) of the lubricating oil (7) are provided at both edges (4c) and (4k) of the downwardly recessed curved curved portion (4b). The lubricating oil (7) formed and accumulated in the downward concave curved portion (4b) by the guide of this lubricating oil flow guide groove (4m) is the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4 ) May be allowed to flow down between.

図１(Ａ)(Ｂ)(Ｃ)に示すように、スラスト軸受板(４)は、入力輪(５)のボス部(５ａ)と回転軸(３)のジャーナル部(３ａ)との隙間(６)に嵌入される嵌入板部(４ｄ)と、嵌入板部(４ｄ)の外周に位置する外周板部(４ｅ)と、スラスト軸受板(４)の中心軸線(４ｇ)と平行な向きに見て、スラスト軸受板(４)の中心軸線(４ｇ)を間に挟む外周板部(４ｅ)の相互反対側に配置される取り付け板部(４ｆ)(４ｆ)とを備え、外周板部(４ｅ)と取り付け板部(４ｆ)とに跨る４箇所に凹入湾曲部(４ａ)がそれぞれ形成され、スラスト軸受板(４)の取り付け姿勢に応じて、４箇所の凹入湾曲部(４ａ)のいずれかが、潤滑油(７)が溜まる下向き凹入湾曲部(４ｂ)とされている。   As shown in FIGS. 1 (A), (B), and (C), the thrust bearing plate (4) has a gap between the boss portion (5a) of the input ring (5) and the journal portion (3a) of the rotating shaft (3). An insertion plate portion (4d) inserted into (6), an outer peripheral plate portion (4e) positioned on the outer periphery of the insertion plate portion (4d), and a direction parallel to the central axis (4g) of the thrust bearing plate (4) And mounting plate portions (4f) and (4f) arranged on opposite sides of the outer peripheral plate portion (4e) sandwiching the central axis (4g) of the thrust bearing plate (4) therebetween, the outer peripheral plate portion (4e) and the mounting plate portion (4f) are provided with four concave curved portions (4a) at four locations, and the four concave curved portions (4a) are formed according to the mounting posture of the thrust bearing plate (4). ) Is a downward concave curved portion (4b) in which the lubricating oil (7) is accumulated.

図１(Ｃ)に示すように、スラスト軸受板(４)の中心軸線(４ｇ)と平行な向きに見て、スラスト軸受板(４)は、径大の円板の相互反対側に径小の円板を連結し、径小の円板を取り付け板部(４ｆ)(４ｆ)とした構造であり、図１(Ｃ)に示すスラスト軸受板(４)の基本例では、スラスト軸受板(４)は、中心軸線(４ｇ)を中心にして取り付け板部(４ｆ)(４ｆ)を水平方向から反時計廻りに３０°回転させた姿勢で取り付けられている。   As shown in FIG. 1C, the thrust bearing plate (4) has a small diameter on the opposite side of the large-diameter disk when viewed in a direction parallel to the central axis (4g) of the thrust bearing plate (4). In the basic example of the thrust bearing plate (4) shown in FIG. 1 (C), a thrust bearing plate (4f) (4f) is used. 4) is attached in a posture in which the attachment plate portions (4f) and (4f) are rotated 30 ° counterclockwise from the horizontal direction around the central axis (4g).

図１(Ｃ)に示すように、スラスト軸受板(４)は、その中心軸線(４ｇ)と平行な向きに見て、点対称形状とされている。
また、図１(Ｂ)(Ｄ)に示すように、スラスト軸受板(４)は、表裏対称形状とされている。 As shown in FIG. 1 (C), the thrust bearing plate (4) is point-symmetric when viewed in a direction parallel to the central axis (4g).
Further, as shown in FIGS. 1B and 1D, the thrust bearing plate (4) has a symmetrical shape.

図２(Ａ)(Ｂ)(Ｃ)はスラスト軸受板(４)の変形例を示している。
図２(Ａ)に示す第１変形例は、入力輪(５)のボス部(５ａ)と当接するスラスト軸受板(４)の端面(４ｉ)に潤滑油案内溝(４ｈ)が形成され、スラスト軸受板(４)の中心軸線(４ｇ)と平行な向きに見て、潤滑油案内溝(４ｈ)は、入力輪(５)のボス部(５ａ)の回転方向(５ｄ)に進むほど回転軸(３)に近づくように方向付けられ、下向き凹入湾曲部(４ｂ)から入力輪(５)側に溢れた潤滑油(７)が、入力輪(５)のボス部(５ａ)の回転と潤滑油案内溝(４ｈ)の案内で、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間を回転軸(３)に向かって推進するように構成されている 2A, 2B, and 2C show a modification of the thrust bearing plate (4).
In the first modification shown in FIG. 2 (A), a lubricating oil guide groove (4h) is formed on the end surface (4i) of the thrust bearing plate (4) that comes into contact with the boss portion (5a) of the input wheel (5). When viewed in a direction parallel to the central axis (4g) of the thrust bearing plate (4), the lubricant guide groove (4h) rotates as it advances in the rotational direction (5d) of the boss portion (5a) of the input wheel (5). Lubricating oil (7), which is oriented so as to approach the shaft (3) and overflows from the downward concave curved portion (4b) to the input wheel (5) side, rotates the boss portion (5a) of the input wheel (5). And the lubricating oil guide groove (4h) are guided between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4) toward the rotating shaft (3).

図２(Ｂ)に示す第２変形例は、入力輪(５)のボス部(５ａ)と当接するスラスト軸受板(４)の端面(４ｉ)にオイル保持溝(４ｊ)が形成され、下向き凹入湾曲部(４ｂ)から入力輪(５)側に溢れた潤滑油(７)が、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間でオイル保持溝(４ｊ)に保持されるように構成されている。
オイル保持溝(４ｊ)は、格子状に形成されている。 In the second modification shown in FIG. 2 (B), an oil retaining groove (4j) is formed on the end surface (4i) of the thrust bearing plate (4) that comes into contact with the boss portion (5a) of the input wheel (5), so that it faces downward. Lubricating oil (7) overflowing from the recessed curved portion (4b) to the input wheel (5) side is caused by an oil retaining groove (between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4). 4j).
The oil retaining groove (4j) is formed in a lattice shape.

図２(Ｃ)に示す第３変形例は、図１(Ｃ)のスラスト軸受板(４)の取り付け姿勢を変更したもので、スラスト軸受板(４)は、その中心軸線(４ｇ)を中心として、取り付け板部(４ｆ)(４ｆ)を水平方向から時計廻りに３０°回転させた姿勢で取り付けられている。   The third modification shown in FIG. 2C is a modification of the mounting orientation of the thrust bearing plate (4) shown in FIG. 1C. The thrust bearing plate (4) is centered on its central axis (4g). As shown, the mounting plate portions (4f) and (4f) are mounted in a posture rotated by 30 ° clockwise from the horizontal direction.

図２(Ａ)(Ｂ)(Ｃ)に示す各変形例の他の構成は、図１(Ａ)〜(Ｄ)の基本例と同じであり、図２(Ａ)(Ｂ)(Ｃ)中、図１(Ａ)〜(Ｄ)と同一の要素には、図１(Ａ)〜(Ｄ)と同一の符号を付しておく。   Other configurations of the modified examples shown in FIGS. 2A, 2B, and 2C are the same as the basic examples of FIGS. 1A to 1D, and FIGS. Among these, the same reference numerals as those in FIGS. 1A to 1D are assigned to the same elements as those in FIGS.

図１(Ｃ)、図２(Ａ)(Ｂ)(Ｃ)に示す各スラスト軸受板(４)は、板金製であるが、これに代えて、スラスト軸受板(４)は、焼結合金で形成され、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に進入した潤滑油(７)がスラスト軸受板(４)の端面(４ｉ)の焼結合金の組織に保持されるようにしたものであってもよい。図２(Ａ)(Ｂ)に示す各変形例の潤滑油案内溝(４ｈ)とオイル保持溝(４ｊ)とは組み合わせて用いてもよい。   Each thrust bearing plate (4) shown in FIGS. 1 (C), 2 (A), (B), and (C) is made of sheet metal, but instead, the thrust bearing plate (4) is made of a sintered alloy. The lubricating oil (7) that is formed between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4) is made of a sintered alloy of the end surface (4i) of the thrust bearing plate (4). It may be held by the tissue. The lubricating oil guide groove (4h) and the oil retaining groove (4j) of each modification shown in FIGS. 2 (A) and 2 (B) may be used in combination.

(１) エンジン機壁
(２) ラジアル軸受孔
(３) 回転軸
(３ａ) ジャーナル部
(３ｂ) 端部
(４) スラスト軸受板
(４ａ) 凹入湾曲部
(４ｂ) 下向き凹入湾曲部
(４ｃ) 縁部
(４ｄ) 嵌入板部
(４ｅ) 外周板部
(４ｆ) 取り付け板部
(４ｇ) 中心軸線
(４ｈ) 潤滑油案内溝
(４ｉ) 端面
(４ｊ) オイル保持溝
(５) 入力輪
(５ａ) ボス部
(５ｄ) 回転方向
(６) 隙間
(７) 潤滑油 (1) Engine wall
(2) Radial bearing hole
(3) Rotating shaft
(3a) Journal part
(3b) End
(4) Thrust bearing plate
(4a) Recessed curved part
(4b) Downward concave curved part
(4c) Edge
(4d) Insertion plate
(4e) Outer plate
(4f) Mounting plate
(4g) Center axis
(4h) Lubricating oil guide groove
(4i) End face
(4j) Oil retaining groove
(5) Input wheel
(5a) Boss
(5d) Direction of rotation
(6) Clearance
(7) Lubricating oil

Claims (8)

エンジン機壁(１)に設けられたラジアル軸受孔(２)と、回転軸(３)と、スラスト軸受板(４)とを備え、回転軸(３)のジャーナル部(３ａ)がラジアル軸受孔(２)に内嵌され、回転軸(３)の端部(３ｂ)に入力輪(５)が取り付けられ、入力輪(５)のボス部(５ａ)と回転軸(３)のジャーナル部(３ａ)との隙間(６)にスラスト軸受板(４)が嵌入され、スラスト軸受板(４)がエンジン機壁(１)に取り付けられた、エンジンの回転軸の軸受装置において、
スラスト軸受板(４)の周面に凹入湾曲部(４ａ)が形成され、スラスト軸受板(４)の所定の取り付け姿勢により、凹入湾曲部(４ａ)がスラスト軸受板(４)の上周面で下向きに凹入された下向き凹入湾曲部(４ｂ)とされ、この下向き凹入湾曲部(４ｂ)に溜まって入力輪(５)側に溢れた潤滑油(７)が入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間に流れ落ちるように構成されている、ことを特徴とするエンジンの回転軸の軸受装置。 A radial bearing hole (2) provided in the engine machine wall (1), a rotating shaft (3), and a thrust bearing plate (4) are provided, and the journal portion (3a) of the rotating shaft (3) is a radial bearing hole. (2), the input wheel (5) is attached to the end (3b) of the rotating shaft (3), the boss (5a) of the input wheel (5) and the journal portion of the rotating shaft (3) ( In the bearing device for the rotating shaft of the engine, the thrust bearing plate (4) is inserted into the gap (6) with the 3a), and the thrust bearing plate (4) is attached to the engine machine wall (1).
A concave curved portion (4a) is formed on the circumferential surface of the thrust bearing plate (4), and the concave curved portion (4a) is placed on the thrust bearing plate (4) by a predetermined mounting posture of the thrust bearing plate (4). A downward concave curved portion (4b) recessed downward on the peripheral surface is formed, and lubricating oil (7) accumulated in the downward concave curved portion (4b) and overflowing to the input wheel (5) side is input to the input wheel ( 5. A bearing device for a rotating shaft of an engine, wherein the bearing device is configured to flow between a boss portion (5a) and a thrust bearing plate (4). 請求項１に記載されたエンジンの回転軸の軸受装置において、
下向き凹入湾曲部(４ｂ)のうち、入力輪(５)側の縁部(４ｃ)は面取りされている、ことを特徴とするエンジンの回転軸の軸受装置。 The bearing device for the rotating shaft of the engine according to claim 1,
A bearing device for a rotating shaft of an engine, wherein an edge (4c) on the input wheel (5) side is chamfered in the downward concave curved portion (4b). 請求項１または請求項２に記載されたに記載されたエンジンの回転軸の軸受装置において、
スラスト軸受板(４)は、入力輪(５)のボス部(５ａ)と回転軸(３)のジャーナル部(３ａ)との隙間(６)に嵌入される嵌入板部(４ｄ)と、嵌入板部(４ｄ)の外周に位置する外周板部(４ｅ)と、スラスト軸受板(４)の中心軸線(４ｇ)と平行な向きに見て、スラスト軸受板(４)の中心軸線(４ｇ)を間に挟む外周板部(４ｅ)の相互反対側に配置される取り付け板部(４ｆ)(４ｆ)とを備え、外周板部(４ｅ)と取り付け板部(４ｆ)とに跨る４箇所に凹入湾曲部(４ａ)がそれぞれ形成され、スラスト軸受板(４)の取り付け姿勢に応じて、４箇所の凹入湾曲部(４ａ)のいずれかが、潤滑油(７)が溜まる下向き凹入湾曲部(４ｂ)とされている、ことを特徴とするエンジンの回転軸の軸受装置。 In the bearing device for the rotating shaft of the engine described in claim 1 or 2,
The thrust bearing plate (4) is fitted with a fitting plate portion (4d) fitted into a gap (6) between the boss portion (5a) of the input wheel (5) and the journal portion (3a) of the rotating shaft (3). The central axis (4g) of the thrust bearing plate (4) when viewed in a direction parallel to the outer peripheral plate portion (4e) located on the outer periphery of the plate portion (4d) and the central axis (4g) of the thrust bearing plate (4). Mounting plate portions (4f) and (4f) arranged on opposite sides of the outer peripheral plate portion (4e) sandwiching between the outer peripheral plate portion and the mounting plate portion (4f). Recessed curved portions (4a) are respectively formed, and depending on the mounting posture of the thrust bearing plate (4), any one of the four recessed curved portions (4a) is depressed downward to accumulate the lubricating oil (7). A bearing device for a rotating shaft of an engine, characterized by being a curved portion (4b). 請求項１から請求項３のいずれかに記載されたエンジンの回転軸の軸受装置において、
スラスト軸受板(４)は、その中心軸線(４ｇ)と平行な向きに見て、点対称形状とされている、ことを特徴とするエンジンの回転軸の軸受装置。 In the bearing apparatus of the rotating shaft of the engine described in any one of Claims 1-3,
The thrust bearing plate (4) has a point-symmetrical shape when viewed in a direction parallel to the central axis (4g) thereof, and is a bearing device for a rotating shaft of an engine. 請求項１から請求項４のいずれかに記載されたエンジンの回転軸の軸受装置において、
スラスト軸受板(４)は、表裏対称形状とされている、ことを特徴とするエンジンの回転軸の軸受装置。 In the bearing apparatus of the rotating shaft of the engine described in any one of Claims 1-4,
The thrust bearing plate (4) has a front and back symmetrical shape, and is a bearing device for a rotating shaft of an engine. 請求項１から請求項５のいずれかに記載されたエンジンの回転軸の軸受装置において、
入力輪(５)のボス部(５ａ)と当接するスラスト軸受板(４)の端面(４ｉ)に潤滑油案内溝(４ｈ)が形成され、スラスト軸受板(４)の中心軸線(４ｇ)と平行な向きに見て、潤滑油案内溝(４ｈ)は、入力輪(５)のボス部(５ａ)の回転方向(５ｄ)に進むほど回転軸(３)に近づくように方向付けられ、下向き凹入湾曲部(４ｂ)から入力輪(５)側に溢れた潤滑油(７)が、入力輪(５)のボス部(５ａ)の回転と潤滑油案内溝(４ｈ)の案内で、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間を回転軸(３)に向かって推進するように構成されている、ことを特徴とするエンジンの回転軸の軸受装置。 In the bearing apparatus of the rotating shaft of the engine as described in any one of Claims 1-5,
A lubricating oil guide groove (4h) is formed on the end face (4i) of the thrust bearing plate (4) that contacts the boss portion (5a) of the input wheel (5), and the central axis (4g) of the thrust bearing plate (4) When viewed in a parallel direction, the lubricant guide groove (4h) is oriented so as to approach the rotation axis (3) as it advances in the rotation direction (5d) of the boss portion (5a) of the input wheel (5). Lubricating oil (7) overflowing from the concave curved portion (4b) to the input wheel (5) side is input by rotation of the boss portion (5a) of the input wheel (5) and guidance of the lubricating oil guide groove (4h). A bearing device for a rotating shaft of an engine, characterized in that the rotating shaft (3) is propelled between a boss portion (5a) of a wheel (5) and a thrust bearing plate (4). . 請求項１から請求項６のいずれかに記載されたエンジンの回転軸の軸受装置において、
入力輪(５)のボス部(５ａ)と当接するスラスト軸受板(４)の端面(４ｉ)にオイル保持溝(４ｊ)が形成され、下向き凹入湾曲部(４ｂ)から入力輪(５)側に溢れた潤滑油(７)が、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間でオイル保持溝(４ｊ)に保持されるように構成されている、ことを特徴とするエンジンの回転軸の軸受装置。 In the bearing apparatus of the rotating shaft of the engine as described in any one of Claims 1-6,
An oil retaining groove (4j) is formed on the end surface (4i) of the thrust bearing plate (4) that contacts the boss portion (5a) of the input wheel (5), and the input wheel (5) is formed from the downwardly-indented curved portion (4b). The lubricating oil (7) overflowing to the side is held in the oil holding groove (4j) between the boss portion (5a) of the input wheel (5) and the thrust bearing plate (4). A bearing device for a rotating shaft of an engine. 請求項１から請求項７のいずれかに記載されたエンジンの回転軸の軸受装置において、
スラスト軸受板(４)が焼結合金で形成され、下向き凹入湾曲部(４ｂ)から入力輪(５)側に溢れた潤滑油(７)が、入力輪(５)のボス部(５ａ)とスラスト軸受板(４)との間で焼結合金の表面組織に保持されるように構成されている、ことを特徴とするエンジンの回転軸の軸受装置。 In the bearing apparatus of the rotating shaft of the engine described in any one of Claims 1-7,
The thrust bearing plate (4) is made of a sintered alloy, and the lubricating oil (7) overflowing from the downward concave curved portion (4b) to the input wheel (5) side is the boss portion (5a) of the input wheel (5). A bearing device for a rotary shaft of an engine, which is configured to be held in a surface structure of a sintered alloy between the bearing and the thrust bearing plate (4).
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017061910A (en) * 2015-09-25 2017-03-30 株式会社クボタ Engine bearing structure

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JPS601902U (en) * 1983-06-17 1985-01-09 ヤンマーディーゼル株式会社 Camshaft thrust receiver structure
JPS63112205U (en) * 1987-01-14 1988-07-19
JPH0195509U (en) * 1987-12-16 1989-06-23
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JP2000301794A (en) * 1999-04-23 2000-10-31 Canon Inc Recording apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5517666A (en) * 1978-07-24 1980-02-07 Taiho Kogyo Co Ltd Cam shaft plate washer for internal combustion engine
JPS601902U (en) * 1983-06-17 1985-01-09 ヤンマーディーゼル株式会社 Camshaft thrust receiver structure
JPS63112205U (en) * 1987-01-14 1988-07-19
JPH0195509U (en) * 1987-12-16 1989-06-23
JPH09242511A (en) * 1996-03-06 1997-09-16 Isuzu Motors Ltd Thrust bearing structure for cam shaft
JP2000301794A (en) * 1999-04-23 2000-10-31 Canon Inc Recording apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017061910A (en) * 2015-09-25 2017-03-30 株式会社クボタ Engine bearing structure

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