JP2002054419A - Crankshaft lubricating device - Google Patents
Crankshaft lubricating deviceInfo
- Publication number
- JP2002054419A JP2002054419A JP2000239098A JP2000239098A JP2002054419A JP 2002054419 A JP2002054419 A JP 2002054419A JP 2000239098 A JP2000239098 A JP 2000239098A JP 2000239098 A JP2000239098 A JP 2000239098A JP 2002054419 A JP2002054419 A JP 2002054419A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- filter plate
- web
- base
- crankshaft
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
-
- 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
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/14—Features relating to lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
- F01M2001/062—Crankshaft with passageways
-
- 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
- F16C33/66—Special parts or details in view of lubrication
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Rolling Contact Bearings (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Centrifugal Separators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、遠心フィルタ付
クランクシャフトに係り、特に軸受精度を高精度に維持
できるようにしたものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crankshaft with a centrifugal filter, and more particularly to a crankshaft capable of maintaining high bearing accuracy.
【０００２】[0002]
【従来の技術】図３は実公昭６０−６５７７号に記載さ
れた遠心フィルタ付クランクシャフトの構造を示し、ク
ランクシャフト１はジャーナル２，ウエブ３及びクラン
クピン４からなり、ジャーナル２に設けた油路５，６及
びクランクピン４に設けた油路７からなる強制油路を設
け、オイルポンプＰから強制的にオイルを供給して、ク
ランクピン４に設けた油穴４ａからコンロッド８の軸受
部９等へ潤滑するようになっている。2. Description of the Related Art FIG. 3 shows a structure of a crankshaft with a centrifugal filter described in Japanese Utility Model Publication No. 60-6577. A crankshaft 1 is composed of a journal 2, a web 3 and a crankpin 4, and an oil provided on the journal 2. A forcible oil passage composed of passages 5 and 6 and an oil passage 7 provided on the crank pin 4 is provided, oil is forcibly supplied from an oil pump P, and an oil hole 4 a provided on the crank pin 4 allows a bearing portion of the connecting rod 8. Lubricate to 9 mag.
【０００３】また、ウエブ３の側面とこれに対面するジ
ャーナル壁１４の間に強制油路へ連通する遠心フィルタ
１０が設けられ、この遠心フィルタ１０を形成する壁部
の一部を略コーン状のフィルタ板１１で構成している。
フィルタ板１１の基部２０はウエブ３とボール軸受１２
の間で圧接支持され、外周側端部は油路７の開口部を覆
って、ウエブ３の外周側側面へ密接されている。ボール
軸受１２はジャーナル２の外周面とジャーナル壁１４の
双方へ圧入されている。なお、図中の符号１３は、ウエ
ブ３を挟んだ他側の軸受、１５はシリンダブロック、１
６はシリンダライナ、１７はピストンである。A centrifugal filter 10 communicating with a forced oil passage is provided between a side surface of the web 3 and a journal wall 14 facing the web 3. A part of the wall forming the centrifugal filter 10 is formed in a substantially cone shape. It is composed of a filter plate 11.
The base 20 of the filter plate 11 is composed of the web 3 and the ball bearing 12.
The outer peripheral end covers the opening of the oil passage 7 and is in close contact with the outer peripheral side surface of the web 3. The ball bearing 12 is pressed into both the outer peripheral surface of the journal 2 and the journal wall 14. In the figure, reference numeral 13 denotes a bearing on the other side with the web 3 interposed therebetween, 15 denotes a cylinder block, 1
6 is a cylinder liner and 17 is a piston.
【０００４】[0004]
【発明が解決しようとする課題】ところで上記のように
フィルタ板１１の基部をウエブ３とボール軸受１２の間
で挟むことによって固定する形式では、フィルタ板１１
の板厚のバラツキによってボール軸受１２の転動面ズレ
を生じることがある。この転動面ズレの発生原理を図４
に示す。図４はフィルタ板１１の基部に対する支持構造
を拡大して示し、図４のＡは、フィルタ板１１の板厚が
厚い場合、図４のＢは薄い場合をそれぞれ誇張した寸法
で示す。By the way, as described above, the filter plate 11 is fixed by sandwiching the base portion of the filter plate 11 between the web 3 and the ball bearing 12.
In some cases, the rolling surface of the ball bearing 12 may be displaced due to the thickness variation. FIG. 4 illustrates the principle of occurrence of this rolling surface displacement.
Shown in 4 shows the support structure for the base of the filter plate 11 in an enlarged manner. FIG. 4A shows exaggerated dimensions when the filter plate 11 is thick, and FIG. 4B shows exaggerated dimensions when the filter plate 11 is thin.
【０００５】すなわち、ボール軸受１２をジャーナル壁
１４側へ圧入されるアウターレース２１、ジャーナル２
上へ圧入されるインナーレース２２及びボール２３で構
成し、ウエブ３の軸受位置規制部３ａとインナーレース
２２の間にフィルタ板１１の基部２０を圧接固定すると
き、ジャーナル２に対するインナーレース２２の固定位
置はフィルタ板１１の板厚のバラツキによって影響を受
ける。一方、アウターレース２１のジャーナル壁１４に
対する固定位置は一定である。[0005] That is, the outer race 21 and the journal 2 in which the ball bearing 12 is pressed into the journal wall 14 side.
When the base portion 20 of the filter plate 11 is press-fixed between the bearing position regulating portion 3a of the web 3 and the inner race 22, the inner race 22 is fixed to the journal 2. The position is affected by variations in the thickness of the filter plate 11. On the other hand, the fixing position of the outer race 21 to the journal wall 14 is constant.
【０００６】したがって、図４のＡに示すようにフィル
タ板１１の板厚が基準値よりも厚いと、インナーレース
２２はそれだけ矢示方向すなわち図の右方向へずれ、イ
ンナーレース２２とアウターレース２１の間はそれぞれ
の中心線間にａなるズレが生じ、これがボール２３の内
外の転動面間におけるズレである転動面ズレを生じる。
一方、図４のＢに示すように、板厚が基準値より薄い場
合にも、インナーレース２２がそれだけ矢示方向すなわ
ち図の左方向へずれるため、インナーレース２２とアウ
ターレース２１の間はそれぞれの中心線間が寸法ｂのよ
うにずれて転動面ズレを生じる。Therefore, as shown in FIG. 4A, when the thickness of the filter plate 11 is larger than the reference value, the inner race 22 shifts in the direction of the arrow, that is, rightward in the drawing, and the inner race 22 and the outer race 21 are shifted. Between the center lines, a shift a occurs between the center lines, which results in a shift between the rolling surfaces on the inside and outside of the ball 23.
On the other hand, as shown in FIG. 4B, even when the plate thickness is thinner than the reference value, the inner race 22 shifts in the direction of the arrow, that is, in the left direction in the drawing, so that there is a gap between the inner race 22 and the outer race 21. Between the center lines of the rollers as shown by dimension b, causing a rolling surface displacement.
【０００７】したがって、このようなフィルタ板１１の
基部２０に対する支持構造では、遠心フィルタ１０自体
の公差に加えて、フィルタ板１１の板厚公差も合計され
ることになり、しかも板厚のＪＩＳ規格公差は比較的大
きなものに設定されているから、ボール軸受１２を利用
してフィルタ板１１の基部２０を固定する構造を採用す
る限り、ボール軸受１２の転動面を高精度に維持するこ
とが困難になった。しかし高速回転するクランクシャフ
トの軸受は本来的に転動面を高精度に維持することが要
求されている。そこで本願発明は遠心フィルタを設ける
にもかかわらず、軸受の転動面を高精度に維持できるよ
うにしたクランクシャフト潤滑装置の提供を目的とす
る。Therefore, in such a support structure of the filter plate 11 with respect to the base 20, in addition to the tolerance of the centrifugal filter 10 itself, the plate thickness tolerance of the filter plate 11 is summed up. Since the tolerance is set to be relatively large, the rolling surface of the ball bearing 12 can be maintained with high accuracy as long as the structure for fixing the base 20 of the filter plate 11 using the ball bearing 12 is adopted. It became difficult. However, the bearing of a crankshaft that rotates at high speed is originally required to maintain the rolling surface with high accuracy. Therefore, an object of the present invention is to provide a crankshaft lubricating device capable of maintaining a rolling surface of a bearing with high accuracy despite providing a centrifugal filter.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
本願発明に係るクランクシャフト潤滑装置は、クランク
シャフトのウエブ一側面とこれに対面するジャーナル壁
の間に遠心フィルタを設けてクランクシャフトに形成さ
れている強制油路へ連通させるとともに、この遠心フィ
ルタを形成するフィルタ板の基部外側をクランクシャフ
トの軸受内側面へ密接させたクランクシャフト潤滑装置
において、前記軸受内側面のうち、内周部を前記ウエブ
側面に形成された軸受接触部へ直接接触させ、この軸受
接触部より外周側に前記フィルタ板の基部を密接させる
とともに、このフィルタ板の基部と前記ウエブ側との間
にクリアランスを形成したことを特徴とする。In order to solve the above-mentioned problems, a crankshaft lubricating apparatus according to the present invention is provided with a centrifugal filter between one side surface of a web of a crankshaft and a journal wall facing the same to form the crankshaft. In the crankshaft lubricating device, in which the outer base of the filter plate forming the centrifugal filter is closely contacted with the inner surface of the bearing of the crankshaft, the inner peripheral portion of the inner surface of the bearing is connected to the forced oil passage. A direct contact was made with the bearing contact portion formed on the side surface of the web, and the base of the filter plate was brought into close contact with the outer peripheral side of the bearing contact portion, and a clearance was formed between the base of the filter plate and the web side. It is characterized by the following.
【０００９】[0009]
【発明の効果】本願発明によれば、軸受内側面のうち内
周部をウエブ側面に形成された軸受接触部へ直接接触さ
せるとともに、フィルタ板の基部をこの軸受接触部より
外周側で軸受内側面へ密接させ、かつウエブ側との間に
クリアランスを形成したので、軸受の位置決めはウエブ
の軸受接触部によって行われ、フィルタ板の基部におけ
る板厚を軸受の位置決め精度に関与させないようにでき
る。したがてフィルタ板の板厚がばらついても軸受の転
動面に影響せず、その結果、遠心フィルタを軸受に隣接
して設けるにもかかわらず軸受の転動面ズレを防ぎ、転
動面を高精度に維持できる。According to the present invention, the inner peripheral portion of the inner surface of the bearing is brought into direct contact with the bearing contact portion formed on the side surface of the web, and the base portion of the filter plate is located on the outer peripheral side of the bearing contact portion. The bearing is positioned by the bearing contact portion of the web because the clearance is formed between the side and the web side, so that the thickness at the base of the filter plate does not affect the positioning accuracy of the bearing. Therefore, even if the thickness of the filter plate varies, it does not affect the rolling surface of the bearing. As a result, even if the centrifugal filter is provided adjacent to the bearing, the rolling surface of the bearing is prevented from being displaced. Can be maintained with high accuracy.
【００１０】また、フィルタ板を皿バネ状にすると、自
己の復元弾性により基部を軸受へ密接させることができ
るので、強制油路の一部でもある遠心フィルタをフィル
タ板で液密に覆うことができる。Further, if the filter plate is formed as a disc spring, the base can be brought into close contact with the bearing by its own restoring elasticity. Therefore, the centrifugal filter which is a part of the forced oil passage can be covered with the filter plate in a liquid-tight manner. it can.
【００１１】[0011]
【発明の実施の形態】以下、図面に基づいて一実施例を
説明する。図１はクランクシャフトの軸受接触部分を拡
大して示す図３に対応する図、図２はそのフィルタ板を
軸受に密接する前の状態を示す部分拡大断面図である。
なお、本実施例は前記従来例に対してフィルタ板の支持
構造を変更している点が主要な相違点であるため、符号
を共通に用いるとともに、フィルタ板及び軸受構造以外
の部分については、原則として説明を省略し、前記従来
例の説明を援用する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the drawings. FIG. 1 is an enlarged view corresponding to FIG. 3 showing a bearing contact portion of a crankshaft in an enlarged manner, and FIG. 2 is a partially enlarged sectional view showing a state before the filter plate is brought into close contact with a bearing.
The main difference of the present embodiment is that the support structure of the filter plate is changed from that of the conventional example, so that the reference numerals are used in common, and portions other than the filter plate and the bearing structure are used. In principle, the description is omitted, and the description of the conventional example is referred to.
【００１２】図１において、ボール軸受１２はアウター
レース２１をジャーナル壁１４へ圧入するとともに、イ
ンナーレース２２はジャーナル２上に形成された太径段
部２４上へ緩く支持される。このボール軸受１２の位置
決めはジャーナル２上のワッシャ３０及びギヤ３１を介
して軸端のネジ部３２へナット３３を締結することによ
り、ワッシャ３０とウエブ３の側面との間で行われる。In FIG. 1, the ball bearing 12 presses the outer race 21 into the journal wall 14, and the inner race 22 is loosely supported on a large-diameter step portion 24 formed on the journal 2. The positioning of the ball bearing 12 is performed between the washer 30 and the side surface of the web 3 by fastening a nut 33 to the threaded portion 32 at the shaft end via the washer 30 and the gear 31 on the journal 2.
【００１３】フィルタ板１１は油路７の開口端を覆って
ウエブ３の側面とこれに対面するジャーナル壁１４及び
ボール軸受１２の間に遠心フィルタ１０を区画する。な
お、フィルタ板１１の詳細は後述する。The filter plate 11 covers the open end of the oil passage 7 and partitions the centrifugal filter 10 between the side surface of the web 3 and the journal wall 14 and the ball bearing 12 facing the side surface. The details of the filter plate 11 will be described later.
【００１４】ウエブ３を挟んで他側に位置するジャーナ
ル２のボール軸受１３は、アウターレース３４をジャー
ナル壁１４へ圧入し、インナーレース３５をジャーナル
２の太径段部３７上へ圧入してある。符号３６はボール
である。In the ball bearing 13 of the journal 2 located on the other side of the web 3, the outer race 34 is pressed into the journal wall 14, and the inner race 35 is pressed into the large-diameter step portion 37 of the journal 2. . Reference numeral 36 denotes a ball.
【００１５】図２はフィルタ板１１及びその取付構造の
詳細を示し、フィルタ板１１は鉄等のバネ性がある適宜
金属からなり、プレス成形等の適宜方法によって中心部
がボール軸受１２方向へ凸となる略コーン状をなすよう
に形成される。FIG. 2 shows details of the filter plate 11 and its mounting structure. The filter plate 11 is made of an appropriate metal having a spring property such as iron, and its central portion is protruded toward the ball bearing 12 by an appropriate method such as press molding. It is formed so as to have a substantially cone shape.
【００１６】その基部２０は、階段状に屈曲してボール
軸受１２と接触しないフリー状態では太径段部２４の上
へ張り出し、太径段部２４へボール軸受１２のインナー
レース２２を外嵌した組み付け状態では、ボール軸受１
２の内側面によってウエブ３の側面方向へ弾性変形して
押し込まれる。In a free state where the base portion 20 is bent stepwise and does not come into contact with the ball bearing 12, it protrudes above the large-diameter step portion 24, and the inner race 22 of the ball bearing 12 is fitted to the large-diameter step portion 24. In the assembled state, the ball bearing 1
The inner side of the web 2 is elastically deformed and pushed into the side of the web 3.
【００１７】ウエブ３のインナーレース２２の内側面と
対面する部分には環状凹部である基部収容部２６が形成
され、この基部収容部２６とインナーレース２２の内側
面との間に基部２０を収容する溝が形成され、この溝中
にインナーレース２２の内側面によって押し込まれた基
部２０が収容される。A base receiving portion 26, which is an annular concave portion, is formed in a portion of the web 3 facing the inner side surface of the inner race 22, and the base portion 20 is stored between the base receiving portion 26 and the inner side surface of the inner race 22. A groove is formed, and the base 20 pushed by the inner surface of the inner race 22 is accommodated in the groove.
【００１８】ウエブ３の側面で基部収容部２６より内周
側に軸受接触部２５が形成されている。軸受接触部２５
は太径段部２４方向へ向かって基部収容部２６よりも一
段外側位置に形成された環状の凹部として切削加工によ
り形成される。軸受接触部２５はインナーレース２２の
内側面が直接接触することによりその位置決めをする部
分である。A bearing contact portion 25 is formed on the side surface of the web 3 on the inner peripheral side of the base accommodating portion 26. Bearing contact part 25
Is formed by cutting as an annular concave portion formed at a position one step outside of the base accommodating portion 26 toward the large diameter step portion 24. The bearing contact portion 25 is a portion for positioning the inner race 22 by direct contact with the inner surface thereof.
【００１９】軸受接触部２５と基部収容部２６は階段状
に連続し、軸受接触部２５と基部収容部２６の間隔はす
なわち基部２０を収容する基部収容部２６とインナーレ
ース２２との間に形成される溝の幅ｄをなし、この幅ｄ
はフィルタ板１１の板厚ｔよりも若干大きくなってい
る。したがって、基部２０がこの部収容部２６とインナ
ーレース２２との間に形成される溝内へ入るとクランク
ピン４側に若干のクリアランスを生じるようになってい
る。The bearing contact portion 25 and the base accommodating portion 26 are continuous in a stepwise manner, and the interval between the bearing contact portion 25 and the base accommodating portion 26 is formed between the base accommodating portion 26 accommodating the base 20 and the inner race 22. The width d of the groove to be formed, and this width d
Is slightly larger than the thickness t of the filter plate 11. Therefore, when the base portion 20 enters the groove formed between the portion housing portion 26 and the inner race 22, a slight clearance is generated on the crankpin 4 side.
【００２０】フィルタ板１１の外周部はカール部２７を
なし、ウエブ３の側面外周側に形成された環状凹曲面部
２８へ密接される。カール部２７と環状凹曲面部２８の
間は、ボール軸受１２のインナーレース２２が基部２０
を弾性変形させてウエブ３側へ押し込むことにより液密
になり、遠心フィルタ１０内のオイル漏れを防止してい
る。The outer peripheral portion of the filter plate 11 forms a curled portion 27 and is closely contacted with an annular concave curved surface portion 28 formed on the outer peripheral side surface of the web 3. Between the curl portion 27 and the annular concave curved surface portion 28, the inner race 22 of the ball bearing 12 is
Is elastically deformed and pushed toward the web 3 so as to be liquid-tight, thereby preventing oil leakage in the centrifugal filter 10.
【００２１】フィルタ板１１によって覆われた遠心フィ
ルタ１０は、油路６及び７と連通し、クランクシャフト
１が高速回転することにより、オイル中に混入する金属
くず等Ｎ不純物を遠心力で外方へ分離するようになって
いる。このような不純物の除去されたオイルは遠心フィ
ルタ１０から油路７へ送られ、さらに油穴４ａから軸受
部９へ給油される。The centrifugal filter 10 covered by the filter plate 11 communicates with the oil passages 6 and 7 and rotates the crankshaft 1 at a high speed to remove N impurities such as metal chips mixed in the oil by centrifugal force. To be separated. The oil from which such impurities have been removed is sent from the centrifugal filter 10 to the oil passage 7 and further supplied to the bearing 9 through the oil hole 4a.
【００２２】次に、本実施例の作用を説明する。図２に
おいて、フィルタ板１１をジャーナル２の上へ嵌めてウ
エブ３の側面へ被せてから、予めクランクケースのジャ
ーナル壁１４へ圧入固定されているボール軸受１２へジ
ャーナル２の一端を押し込み、ボール軸受１２のインナ
ーレース２２を太径段部２４上へ外嵌し、続いてジャー
ナル２へワッシャ３０及びギヤ３１を嵌め、軸端のネジ
部３２へナット３３を締結する。Next, the operation of this embodiment will be described. In FIG. 2, the filter plate 11 is fitted on the journal 2 and covered on the side surface of the web 3, and then one end of the journal 2 is pushed into the ball bearing 12 which has been press-fitted and fixed to the journal wall 14 of the crankcase in advance. Twelve inner races 22 are fitted onto the large-diameter step portion 24, then the washer 30 and the gear 31 are fitted into the journal 2, and a nut 33 is fastened to the threaded portion 32 at the shaft end.
【００２３】これにより、インナーレース２２は軸受接
触部２５へ直接接触してワッシャ３０と軸受接触部２５
の間に位置決め固定される。また、インナーレース２２
の嵌装前の状態で軸受接触部２５から太径段部２４上へ
若干寸法ｃだけ張り出していた基部２０はボール軸受１
２のインナーレース２２内側面へ当接することにより、
寸法ｃの分だけ弾性変形されてボール軸受１２のインナ
ーレース２２と基部収容部２６の間に形成される溝内へ
押し込まれる。As a result, the inner race 22 comes into direct contact with the bearing contact portion 25, and the washer 30 and the bearing contact portion 25
It is positioned and fixed between. In addition, inner race 22
Before fitting, the base portion 20 that slightly protrudes from the bearing contact portion 25 onto the large-diameter step portion 24 by the dimension c is the ball bearing 1.
2 by contacting the inner side of the inner race 22
The ball bearing 12 is elastically deformed by the dimension c and is pushed into a groove formed between the inner race 22 of the ball bearing 12 and the base housing portion 26.
【００２４】このときインナーレース２２と基部収容部
２６の間に形成される溝幅ｄよりも基部２０の板厚ｔの
方が小さいので、基部２０は基部収納部２６へ若干のク
リアランスをもって収容される。同時に、自己の復元弾
性によりボール軸受１２へ液密に接触するようになって
いる。このときフィルタ板１１の外周部はカール部２７
が凹曲面部２８内へ液密に接触されるため、フィルタ板
１１は遠心フィルタ１０を液密に密閉できる。At this time, since the thickness t of the base portion 20 is smaller than the groove width d formed between the inner race 22 and the base portion 26, the base portion 20 is received in the base portion 26 with a slight clearance. You. At the same time, the ball bearing 12 comes into liquid-tight contact with its own restoring elasticity. At this time, the outer peripheral portion of the filter plate 11 is
The filter plate 11 can seal the centrifugal filter 10 in a liquid-tight manner.
【００２５】したがって、従来のように基部２０を介在
することなく、インナーレース２２の位置決めが軸受接
触部２５との直接接触で行われるので、フィルタ板１１
における板厚のバラツキによる影響を排除でき、インナ
ーレース２２の位置決めはそれ自体の精度と、軸受接触
部２５の加工精度で決まることになる。しかも、軸受接
触部２５は高い加工精度の切削加工で形成できるから、
インナーレース２２の位置決めを正確にでき、ボール軸
受１２の転動面ズレを防止して軸受精度を高精度に維持
できるようになる。Therefore, the positioning of the inner race 22 is performed by direct contact with the bearing contact portion 25 without the intervention of the base portion 20 as in the prior art.
In this case, the influence of the variation in the plate thickness can be eliminated, and the positioning of the inner race 22 is determined by its own accuracy and the processing accuracy of the bearing contact portion 25. Moreover, since the bearing contact portion 25 can be formed by cutting with high machining accuracy,
The positioning of the inner race 22 can be accurately performed, and the rolling surface deviation of the ball bearing 12 can be prevented, so that the bearing accuracy can be maintained with high accuracy.
【００２６】そのうえ、フィルタ板１１を皿バネ状と
し、基部２０をインナーレース２２の内側面を利用して
弾性変形させながら固定するので、フィルタ板１１の復
元弾性により基部２０をインナーレース２２の内側面へ
液密に圧接させ、かつ外周側のカール部２７を凹曲面部
２８内へ液密に圧接させることができ、その結果、遠心
フィルタ１０を液密に密閉できる。In addition, since the filter plate 11 is formed as a disc spring and the base 20 is fixed while being elastically deformed by using the inner side surface of the inner race 22, the base 20 is formed inside the inner race 22 by the restoring elasticity of the filter plate 11. The side surface can be pressed in a liquid-tight manner, and the outer curl portion 27 can be pressed in a liquid-tight manner into the concave curved surface portion 28. As a result, the centrifugal filter 10 can be sealed in a liquid-tight manner.
【図１】実施例に係るクランクシャフトの拡大断面図FIG. 1 is an enlarged sectional view of a crankshaft according to an embodiment.
【図２】その遠心フィルタ板を固定する前の状態を示す
部分拡大断面図FIG. 2 is a partially enlarged sectional view showing a state before fixing the centrifugal filter plate.
【図３】従来例のクランクシャフト部分を示す断面図FIG. 3 is a sectional view showing a crankshaft portion of a conventional example.
【図４】その軸受における転動面ズレの発生原理説明図FIG. 4 is an explanatory view of the principle of occurrence of rolling surface deviation in the bearing.
１：クランクシャフト、２：ジャーナル、３：ウエブ、
４：クランクピン、５：油路、６：油路、７：油路、
９：コンロッド軸受部、１０：遠心フィルタ、１１：フ
ィルタ板、１２：ボール軸受、１４：ジャーナル壁、２
０：基部、２１：アウターレース、２３：ボール、２
５：軸受接触部、２６：基部収容部1: crankshaft, 2: journal, 3: web,
4: crank pin, 5: oil path, 6: oil path, 7: oil path,
9: connecting rod bearing, 10: centrifugal filter, 11: filter plate, 12: ball bearing, 14: journal wall, 2
0: Base, 21: Outer race, 23: Ball, 2
5: bearing contact part, 26: base accommodation part
Claims (2)
に対面するジャーナル壁の間に遠心フィルタを設けてク
ランクシャフトに形成されている強制油路へ連通させる
とともに、この遠心フィルタを形成するフィルタ板の基
部外側をクランクシャフトの軸受内側面へ密接させたク
ランクシャフト潤滑装置において、前記軸受内側面のう
ち、内周部を前記ウエブ側面に形成された軸受接触部へ
直接接触させ、この軸受接触部より外周側に前記フィル
タ板の基部を密接させるとともに、このフィルタ板の基
部と前記ウエブ側との間にクリアランスを形成したこと
を特徴とするクランクシャフト潤滑装置。1. A centrifugal filter is provided between one side surface of a web of a crankshaft and a journal wall facing the web to communicate with a forced oil passage formed in the crankshaft, and a filter plate for forming the centrifugal filter is provided. In a crankshaft lubricating device in which a base outer side is closely contacted with a bearing inner side surface of a crankshaft, an inner peripheral portion of the bearing inner side surface is brought into direct contact with a bearing contact portion formed on the web side surface. A crankshaft lubricating device, wherein a base of the filter plate is brought into close contact with an outer peripheral side, and a clearance is formed between the base of the filter plate and the web side.
己の復元弾性により基部を前記軸受内側面へ密接させた
ことを特徴とする請求項１に記載したクランクシャフト
潤滑装置。2. The crankshaft lubricating device according to claim 1, wherein the filter plate is formed in the shape of a disc spring, and a base is brought into close contact with the inner surface of the bearing by its own restoring elasticity.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000239098A JP3824475B2 (en) | 2000-08-07 | 2000-08-07 | Crankshaft lubrication system |
| BRPI0103908-3A BR0103908B1 (en) | 2000-08-07 | 2001-08-07 | crankshaft lubrication system. |
| CNB011255129A CN1184409C (en) | 2000-08-07 | 2001-08-07 | Crank lubricating device |
| KR10-2001-0047430A KR100385262B1 (en) | 2000-08-07 | 2001-08-07 | Lubricating device for crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000239098A JP3824475B2 (en) | 2000-08-07 | 2000-08-07 | Crankshaft lubrication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002054419A true JP2002054419A (en) | 2002-02-20 |
| JP3824475B2 JP3824475B2 (en) | 2006-09-20 |
Family
ID=18730694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000239098A Expired - Fee Related JP3824475B2 (en) | 2000-08-07 | 2000-08-07 | Crankshaft lubrication system |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3824475B2 (en) |
| KR (1) | KR100385262B1 (en) |
| CN (1) | CN1184409C (en) |
| BR (1) | BR0103908B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006120695A3 (en) * | 2005-02-17 | 2007-04-05 | Bajaj Auto Ltd | A bearing assembly |
| KR101127565B1 (en) * | 2011-01-28 | 2012-03-23 | (주)레네테크 | Tidal current power generating apparatus |
| CN106246280A (en) * | 2016-07-26 | 2016-12-21 | 隆鑫通用动力股份有限公司 | Injecting type lubricating structure |
| WO2018180557A1 (en) * | 2017-03-30 | 2018-10-04 | 本田技研工業株式会社 | Internal combustion engine |
| JP2018168978A (en) * | 2017-03-30 | 2018-11-01 | 本田技研工業株式会社 | Connecting rod large end part lubrication structure of internal combustion engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924306B (en) * | 2005-08-29 | 2011-01-26 | 光阳工业股份有限公司 | Crank lubricating filtering device |
-
2000
- 2000-08-07 JP JP2000239098A patent/JP3824475B2/en not_active Expired - Fee Related
-
2001
- 2001-08-07 KR KR10-2001-0047430A patent/KR100385262B1/en not_active IP Right Cessation
- 2001-08-07 CN CNB011255129A patent/CN1184409C/en not_active Expired - Fee Related
- 2001-08-07 BR BRPI0103908-3A patent/BR0103908B1/en not_active IP Right Cessation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006120695A3 (en) * | 2005-02-17 | 2007-04-05 | Bajaj Auto Ltd | A bearing assembly |
| KR101127565B1 (en) * | 2011-01-28 | 2012-03-23 | (주)레네테크 | Tidal current power generating apparatus |
| CN106246280A (en) * | 2016-07-26 | 2016-12-21 | 隆鑫通用动力股份有限公司 | Injecting type lubricating structure |
| WO2018180557A1 (en) * | 2017-03-30 | 2018-10-04 | 本田技研工業株式会社 | Internal combustion engine |
| JP2018168978A (en) * | 2017-03-30 | 2018-11-01 | 本田技研工業株式会社 | Connecting rod large end part lubrication structure of internal combustion engine |
| JPWO2018180557A1 (en) * | 2017-03-30 | 2020-02-27 | 本田技研工業株式会社 | Internal combustion engine |
| US10890137B2 (en) | 2017-03-30 | 2021-01-12 | Honda Motor Co., Ltd. | Internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1184409C (en) | 2005-01-12 |
| KR20020012517A (en) | 2002-02-16 |
| CN1337521A (en) | 2002-02-27 |
| BR0103908A (en) | 2002-04-09 |
| KR100385262B1 (en) | 2003-05-23 |
| JP3824475B2 (en) | 2006-09-20 |
| BR0103908B1 (en) | 2009-05-05 |
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