JP2008232124A - Oil thrower on turbine shaft of turbocharger, and method for manufacturing same - Google Patents

Oil thrower on turbine shaft of turbocharger, and method for manufacturing same Download PDF

Info

Publication number
JP2008232124A
JP2008232124A JP2007077287A JP2007077287A JP2008232124A JP 2008232124 A JP2008232124 A JP 2008232124A JP 2007077287 A JP2007077287 A JP 2007077287A JP 2007077287 A JP2007077287 A JP 2007077287A JP 2008232124 A JP2008232124 A JP 2008232124A
Authority
JP
Japan
Prior art keywords
housing
turbine shaft
oil draining
diameter
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2007077287A
Other languages
Japanese (ja)
Inventor
Tatsuo Asai
達夫 浅井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Priority to JP2007077287A priority Critical patent/JP2008232124A/en
Publication of JP2008232124A publication Critical patent/JP2008232124A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Supercharger (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for regulating lubricating oil flowing out to a turbine rotor side of a turbocharger capable of reducing the diameter of a housing fitting through part through which a turbine shaft fits into a housing, and of improving performances for regulating flowing out of lubricating oil tending to leaking out to a turbine rotor side, and a method for manufacturing the same. <P>SOLUTION: The method for manufacturing a device regulating lubricating oil flowing out to the turbine rotor 3 side of the turbocharger 1 includes an insertion process inserting an oil thrower member 8 having an arc shape inner circumference into the housing 5 from the turbine rotor 3 side under a condition where diameter of the same is contracted by elastic deformation, and an installation process making the oil thrower member 8 inserted into the housing 5 butt on an inner wall 10 in the housing 5 at a predetermined position between a housing fitting through part 6 and a bearing 4 under a condition where diameter of the same is expanded in a radial direction Y by elastic recovery. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ターボチャージャーのタービン軸における油切装置、及びその製造方法に関する。   The present invention relates to an oil drain device for a turbine shaft of a turbocharger and a method for manufacturing the same.

一般に、自動車用エンジンには、排気タービンとコンプレッサとをタービン軸で同軸に連結してなる排気タービン過給機(ターボチャージャー)が多用されている。そして、ターボチャージャーのタービン軸は高速回転するので、このようなタービン軸を回転自在に支持する軸受は、十分に油で潤滑される必要がある。   Generally, an exhaust turbine supercharger (turbocharger) in which an exhaust turbine and a compressor are coaxially connected by a turbine shaft is frequently used in an automobile engine. And since the turbine shaft of a turbocharger rotates at high speed, the bearing which rotatably supports such a turbine shaft needs to be sufficiently lubricated with oil.

一方、タービン軸を回転自在に支持するタービン側(タービンロータ側)の軸受に供給された潤滑油は、ターボチャージャーのタービン側に漏れ出してタービンロータを回転させる排気ガス中に混入するような場合がある。このため、軸受部からタービン側へ漏れ出した潤滑油のタービンロータへの流出を制限するための多くの技術がこれまでにも提案されている。例えば、下記の特許文献1、2に開示されているような技術がある。   On the other hand, the lubricating oil supplied to the turbine side (turbine rotor side) bearing that rotatably supports the turbine shaft leaks out to the turbine side of the turbocharger and enters the exhaust gas that rotates the turbine rotor. There is. For this reason, many techniques for limiting the outflow of the lubricating oil leaked from the bearing portion to the turbine side to the turbine rotor have been proposed. For example, there are techniques as disclosed in Patent Documents 1 and 2 below.

従来、タービンロータ側のフローティングメタル部分の排油コントロールをし易くすると共に、フリクションロスの増大を防止することを目的とする過給機の軸受装置に関する技術が開示されている(例えば、特許文献1参照)。この過給機の軸受装置は、軸受ハウジング内のタービンロータ側の端部位置に、外周部に所要間隔にて突片を有するスプリング式の止め輪を圧入してタービンロータ側のフローティングメタルの外側端面に当接させてなるものである。この構成により、外周部に所要間隔にて突片を有するスプリング式の止め輪から均一に油が飛散し、油の挙動コントロールがし易くシール性が向上すると、称している。   2. Description of the Related Art Conventionally, a technology related to a bearing device for a turbocharger that aims to facilitate oil discharge control of a floating metal portion on the turbine rotor side and prevent an increase in friction loss has been disclosed (for example, Patent Document 1). reference). This turbocharger bearing device is formed by press-fitting a spring-type retaining ring having projecting pieces on the outer peripheral portion at a required interval at an end position on the turbine rotor side in a bearing housing. It is abutted against the end face. According to this configuration, it is said that oil is uniformly scattered from a spring-type retaining ring having projecting pieces at a required interval on the outer peripheral portion, so that the behavior of the oil can be easily controlled and the sealing performance is improved.

また、フローティングメタルのシールリング側止め輪に替えてオイルデフェンサを装着して油切りとして十分な性能を得ることを目的とする過給機軸受部におけるオイルデフェンサに関する技術が開示されている(例えば、特許文献2参照)。この過給機軸受部に装着されるオイルデフェンサは、円筒の油切り部とフローティングメタルとの間でタービン軸を取り囲む油切り空間を形成するような形状の小径円板部と大径円板部とを有するものである。この構成により、潤滑油の供給量やタービン軸の回転数の多寡に拘らず安定したオイルシール効果を得られると、称している。   In addition, a technique related to an oil defenser in a turbocharger bearing part for the purpose of obtaining sufficient performance as an oil drainer by installing an oil defenser instead of a retaining ring on a seal ring side of a floating metal is disclosed (for example, Patent Document 2). The oil defender mounted on the turbocharger bearing is composed of a small-diameter disk portion and a large-diameter disk portion that are shaped to form an oil drain space that surrounds the turbine shaft between the cylindrical oil drain portion and the floating metal. It has. According to this configuration, it is said that a stable oil seal effect can be obtained regardless of the amount of lubricating oil supplied and the number of rotations of the turbine shaft.

実開平4−95629号公報Japanese Utility Model Publication No. 4-95629 実開昭63−182237号公報Japanese Utility Model Publication No. 63-182237

しかしながら、特許文献1に記載された外周部に所要間隔にて突片を有するスプリング式の止め輪は、この止め輪とタービン軸との接触を回避するために、タービン軸にあまりに近接して設けることができない。このため、フローティングメタル(軸受)とタービン軸との間の間隙から漏れ出す潤滑油の挙動コントロールまでは容易に行えない。フローティングメタルとタービン軸との間の間隙から漏れ出した潤滑油は、タービン軸の回転による遠心力で噴霧状に飛散し、タービンロータを回転させる排気ガス中に混入するような場合がある。   However, a spring-type retaining ring having protrusions on the outer periphery described in Patent Document 1 at a required interval is provided too close to the turbine shaft in order to avoid contact between the retaining ring and the turbine shaft. I can't. For this reason, it is not easy to control the behavior of the lubricating oil leaking from the gap between the floating metal (bearing) and the turbine shaft. Lubricating oil that has leaked from the gap between the floating metal and the turbine shaft may be sprayed by centrifugal force due to the rotation of the turbine shaft and mixed into the exhaust gas that rotates the turbine rotor.

一方、特許文献2に記載された過給機軸受部に装着されるオイルデフェンサは、タービン軸の回転による遠心力で噴霧状に飛散するフローティングメタルとタービン軸との間の間隙から漏れ出した潤滑油を油切り空間で止めることは可能である。しかし、このオイルデフェンサは、油切り部より大径の大径円板部と小径円板部とを有するものなので、シールリング6装着部(タービン軸がハウジング内に嵌通するハウジング嵌通部)からオイルデフェンサをハウジング内に挿入できない。このため、オイルデフェンサをハウジング内に装着するために、例えば特許文献2の第1図に示すように、ハウジングを軸受ハウジング1と軸受嵌輪2とに分割している。   On the other hand, the oil defender mounted on the turbocharger bearing described in Patent Document 2 is lubricated by leakage from the gap between the floating metal and the turbine shaft that is sprayed by centrifugal force due to the rotation of the turbine shaft. It is possible to stop the oil in the oil draining space. However, since this oil defender has a large-diameter disk portion and a small-diameter disk portion that are larger in diameter than the oil drainage portion, the seal ring 6 mounting portion (housing fitting portion in which the turbine shaft fits in the housing) Oil Defender cannot be inserted into the housing. For this reason, in order to mount the oil defender in the housing, the housing is divided into a bearing housing 1 and a bearing fitting ring 2 as shown in FIG.

尚、特許文献2の第2図には、分割していないハウジング(軸受ハウジング1)にオイルデフェンサ13を適用する例が示されているが、この場合、タービンロータ側のハウジング端部をシールするために配置されているシールリング6装着部の軸受ハウジング1の内径は、少なくとも大径円板部を有するオイルデフェンサ13を軸受ハウジング1内に挿入できる径としなければならない。よって、径の大きいオイルデフェンサを採用すると、それに対応してシールリング6装着部の径を大きくしなければならない。シールリング6装着部の径を大きくすると、シール長が長くなりシール性は低下する。また、シールリング6装着部のシール性を高くするために、シールリング6装着部の径を小さくしてオイルデフェンサの大径円板部の径を小さくすると、特許文献2の第2図に示されているように、油切り空間14の容積を小さくしてしまう。油切り空間14の容積を小さくすると、円筒の油切り部とオイルデフェンサとの間からタービンロータ側に潤滑油が漏れ出し易くなる。   FIG. 2 of Patent Document 2 shows an example in which the oil defender 13 is applied to an undivided housing (bearing housing 1). In this case, the housing end on the turbine rotor side is sealed. Therefore, the inner diameter of the bearing housing 1 of the seal ring 6 mounting portion arranged for this purpose must be a diameter that allows at least the oil defender 13 having a large-diameter disk portion to be inserted into the bearing housing 1. Therefore, when an oil defender having a large diameter is employed, the diameter of the seal ring 6 mounting portion must be increased correspondingly. When the diameter of the seal ring 6 mounting portion is increased, the seal length is increased and the sealing performance is lowered. Further, in order to increase the sealing performance of the seal ring 6 mounting portion, the diameter of the seal ring 6 mounting portion is reduced to reduce the diameter of the large-diameter disk portion of the oil defenser, as shown in FIG. As is done, the volume of the oil draining space 14 is reduced. When the volume of the oil draining space 14 is reduced, the lubricating oil is likely to leak out from the space between the cylindrical oil draining portion and the oil defender to the turbine rotor side.

本発明は、上記実情に鑑みてなされたものであって、その目的は、タービン軸がハウジング内に嵌通するハウジング嵌通部の径を小さくすることを可能とすると共に、タービンロータ側へ漏れ出そうとする潤滑油の流出規制性能を向上させ得るタービン軸における油切装置、およびその製造方法を提供することである。   The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to reduce the diameter of a housing fitting portion in which the turbine shaft is fitted into the housing and to leak to the turbine rotor side. An object of the present invention is to provide an oil drain device for a turbine shaft that can improve the outflow regulation performance of lubricating oil to be discharged, and a method for manufacturing the same.

課題を解決するための手段及び効果Means and effects for solving the problems

本発明に係るターボチャージャーのタービン軸における油切装置の製造方法は、上記目的を達成するために以下のようないくつかの特徴を有している。すなわち、本発明に係る油切装置の製造方法は、以下の特徴を単独で、若しくは、適宜組み合わせて備えている。   In order to achieve the above object, the method for producing an oil drainage device for a turbine shaft of a turbocharger according to the present invention has the following features. That is, the method for manufacturing an oil draining apparatus according to the present invention includes the following features alone or in combination as appropriate.

上記目的を達成するための本発明に係る油切装置の製造方法における第1の特徴は、タービン軸と、当該タービン軸の一方の端部に連結するタービンロータと、当該タービン軸に嵌入し当該タービン軸の他方に配置する軸受と、当該タービン軸を嵌通させて収容するハウジングと、当該タービンロータと当該軸受との間に位置し当該タービン軸が嵌通する当該ハウジング端部のハウジング嵌通部と、を有するターボチャージャーのタービン軸における油切装置の製造方法であって、内周が円弧状の油切用部材を、弾性変形で縮径させた状態で、前記タービンロータ側から前記ハウジング内に挿入する挿入工程と、前記ハウジング内に挿入した前記油切用部材を、前記ハウジング嵌通部と前記軸受との間の所定位置で、前記タービン軸の軸方向に直交する放射方向に弾性回復により拡径させて、当該油切用部材を前記ハウジング内に形成される支持部に当接させる装着工程と、を備えていることである。   In order to achieve the above object, the first feature of the method for producing an oil draining device according to the present invention is that a turbine shaft, a turbine rotor connected to one end of the turbine shaft, and a turbine rotor fitted into the turbine shaft A bearing disposed on the other side of the turbine shaft, a housing for receiving and accommodating the turbine shaft, and a housing fitting at the end of the housing located between the turbine rotor and the bearing and through which the turbine shaft is fitted. And an oil drainage device for a turbine shaft of a turbocharger having an inner peripheral portion, wherein the housing has an inner circumferential arc-shaped oil drainage member that is reduced in diameter by elastic deformation from the turbine rotor side. An inserting step for inserting the oil draining member and the oil draining member inserted in the housing at a predetermined position between the housing fitting portion and the bearing in the axial direction of the turbine shaft. By expanded by elastic recovery in orthogonal radial direction, is that it comprises a mounting step of abutting the support portion which is formed the oil Setsuyo member within said housing.

この構成によると、油切用部材を縮径させた状態でハウジング内に挿入するので、ハウジング嵌通部の径を油切用部材の寸法より小さくしても、油切用部材をハウジング内に挿入できる。つまり、ハウジング嵌通部のシール長を短くすることができ、ハウジング嵌通部のシール性を向上させることができる。また、油切用部材を縮径させる方法は、油切用部材の弾性変形を利用するものであり、その作業は非常に容易である。さらに、油切用部材が縮径時よりも拡径されてハウジングに追従して装着されるため、ハウジングに寸法誤差があっても潤滑油の流出規制性能は確保される。また、油切用部材のハウジングへの装着時の径が、縮径時と拡径時の間の大きさであるターボチャージャーに適用できるため、単なる固定式のオイルデフェンサと比較して、汎用性が高い。   According to this configuration, since the oil draining member is inserted into the housing in a reduced diameter state, the oil draining member is inserted into the housing even if the diameter of the housing fitting portion is smaller than the dimension of the oil draining member. Can be inserted. That is, the seal length of the housing insertion portion can be shortened, and the sealing performance of the housing insertion portion can be improved. Further, the method of reducing the diameter of the oil draining member utilizes elastic deformation of the oil draining member, and the operation is very easy. Furthermore, since the oil draining member has a diameter larger than that at the time of the diameter reduction and is mounted following the housing, even if there is a dimensional error in the housing, lubricating oil outflow regulation performance is ensured. In addition, since the diameter when the oil draining member is attached to the housing can be applied to a turbocharger having a size between when the diameter is reduced and when the diameter is increased, the versatility is higher than that of a mere fixed oil defender. .

また、油切用部材を弾性回復により拡径させてハウジング内に装着することにより、油切用部材は、タービン軸の軸方向に直交する放射方向に向けて拡がって配置される。油切用部材が放射方向に拡がって配置されることにより、タービン軸の軸方向に直交する方向の空間を有効に利用することが可能となる。つまり、油切用部材と軸受との間に形成される油切り空間の容積を大きくできる。よって、軸受部からタービンロータ側に漏れ出し噴霧状となった潤滑油が一時溜まる上記油切り空間から、タービンロータ側に漏れ出す潤滑油の量を抑えることができる。すなわち、タービンロータ側へ漏れ出そうとする潤滑油の流出規制性能を向上させることができる。   In addition, by expanding the diameter of the oil draining member by elastic recovery and mounting it in the housing, the oil draining member is disposed so as to expand in a radial direction perpendicular to the axial direction of the turbine shaft. By arranging the oil draining member so as to expand in the radial direction, it is possible to effectively use the space in the direction orthogonal to the axial direction of the turbine shaft. That is, the volume of the oil removal space formed between the oil removal member and the bearing can be increased. Therefore, it is possible to suppress the amount of lubricating oil leaking to the turbine rotor side from the oil draining space where the lubricating oil leaked from the bearing portion to the turbine rotor side and temporarily accumulated is sprayed. That is, it is possible to improve the outflow restriction performance of the lubricating oil that is about to leak to the turbine rotor side.

さらに、油切用部材は、弾性回復により拡径してハウジング内に形成される支持部に固定されるため、油切用部材によりタービン軸の慣性モーメントを大きくすることはなく、ターボチャージャーの過渡特性を低下させることはない。   Further, since the oil draining member is fixed to a support portion formed in the housing by expanding its diameter by elastic recovery, the oil draining member does not increase the moment of inertia of the turbine shaft, and the turbocharger transient The characteristic is not deteriorated.

また、本発明に係る油切装置の製造方法における第2の特徴は、前記挿入工程において、前記油切用部材を縮径させた状態で、前記ハウジング内の前記タービン軸に挿入し、前記装着工程において、前記油切用部材を拡径させて、当該油切用部材の外周を前記支持部である前記ハウジング内の内壁に当接させることである。   The second feature of the method for manufacturing an oil draining device according to the present invention is that, in the inserting step, the oil draining member is inserted into the turbine shaft in the housing in a state in which the diameter of the oil draining member is reduced, and the mounting In the step, the diameter of the oil draining member is expanded and the outer periphery of the oil draining member is brought into contact with the inner wall of the housing which is the support portion.

この構成によると、油切用部材が挿入される前にハウジング内に収容されたタービン軸に対して油切用部材が挿入される。そして、油切用部材を拡径させることにより、油切用部材の外周はハウジング内の内壁に当接する。ハウジング内の内壁に油切用部材の外周を当接させることにより、タービン軸の軸方向に直交する方向の空間をハウジング内壁まで有効に利用することが可能となる。つまり、油切用部材と軸受との間に形成される油切り空間の容積を大きくでき、タービンロータ側へ漏れ出そうとする潤滑油の流出規制性能を向上させることができる。   According to this configuration, the oil draining member is inserted into the turbine shaft housed in the housing before the oil draining member is inserted. And by increasing the diameter of the oil draining member, the outer periphery of the oil draining member comes into contact with the inner wall in the housing. By bringing the outer periphery of the oil draining member into contact with the inner wall of the housing, the space in the direction orthogonal to the axial direction of the turbine shaft can be effectively used up to the inner wall of the housing. That is, the volume of the oil drainage space formed between the oil draining member and the bearing can be increased, and the outflow regulating performance of the lubricating oil that tends to leak to the turbine rotor side can be improved.

また、本発明に係る油切装置の製造方法における第3の特徴は、前記油切用部材は、一部に切れ目の設けられた環状のC形部材であって、前記挿入工程において、前記C形部材を縮径させて切頭円錐体状の外形形状にして挿入し、前記装着工程において、前記C形部材を拡径させて前記タービンロータ側の径より前記軸受側の径が大きい切頭円錐体状の外形形状で前記支持部に当接させることである。   Further, a third feature of the method for manufacturing an oil draining device according to the present invention is that the oil draining member is an annular C-shaped member partially provided with a cut, and in the inserting step, the C The shape member is reduced in diameter to be inserted into a truncated cone-shaped outer shape, and in the mounting step, the C-shaped member is expanded in diameter so that the diameter on the bearing side is larger than the diameter on the turbine rotor side. It is made to contact | abut to the said support part by the cone-shaped external shape.

この構成によると、油切用部材を一部に切れ目の設けられた環状のC形部材とすることで、油切用部材は簡易な構造となる。また、油切用部材は、軸受側の径がタービンロータ側の径より大きい切頭円錐体状の外形形状であるので、軸受部からタービンロータ側に漏れ出し噴霧状となった潤滑油を、タービンロータ側へ漏れ出させにくい。   According to this configuration, the oil draining member has a simple structure by forming the oil draining member into an annular C-shaped member partially provided with a cut. Further, since the oil cutting member has a frustoconical outer shape in which the diameter on the bearing side is larger than the diameter on the turbine rotor side, the lubricating oil leaking from the bearing portion to the turbine rotor side and spraying is obtained. Difficult to leak to the turbine rotor side.

また、本発明に係る油切装置の製造方法における第4の特徴は、前記支持部に当接させた状態の前記油切用部材の外径を、前記ハウジング嵌通部の前記ハウジングの内径よりも大きくすることである。   The fourth feature of the method for manufacturing an oil draining device according to the present invention is that the outer diameter of the oil draining member in contact with the support portion is set to be larger than the inner diameter of the housing of the housing fitting portion. Is to make it bigger.

この構成によると、ハウジング嵌通部のハウジングの内径は、ハウジング内に装着された油切用部材の外径よりも小さいので、ハウジング嵌通部のシール長を短くすることができ、ハウジング嵌通部のシール性を向上させることができる。つまり、タービンロータ側へ漏れ出そうとする潤滑油の流出規制性能を向上させることができる。   According to this configuration, since the inner diameter of the housing fitting portion is smaller than the outer diameter of the oil draining member mounted in the housing, the seal length of the housing fitting portion can be shortened. The sealing performance of the part can be improved. That is, it is possible to improve the outflow restriction performance of the lubricating oil that is about to leak to the turbine rotor side.

また、本発明に係る油切装置の製造方法における第5の特徴は、前記支持部に当接させた状態の前記油切用部材の内径を、前記タービン軸の径よりも大きくすることである。   Further, a fifth feature of the method for manufacturing an oil draining device according to the present invention is that an inner diameter of the oil draining member in contact with the support portion is made larger than a diameter of the turbine shaft. .

この構成によると、油切用部材とタービン軸との接触は防止される。つまり、油切用部材とタービン軸との接触によるタービン軸の摩擦ロスは生じにくい。   According to this configuration, contact between the oil draining member and the turbine shaft is prevented. That is, the friction loss of the turbine shaft due to the contact between the oil draining member and the turbine shaft hardly occurs.

また、本発明に係るタービン軸における油切装置は、ターボチャージャーのタービンロータへの潤滑油流出を規制するための油切装置に関する。そして、本発明に係る油切装置は、上記目的を達成するために以下のようないくつかの特徴を有している。すなわち、本発明の油切装置は、以下の特徴を単独で、若しくは、適宜組み合わせて備えている。   Moreover, the oil draining device in the turbine shaft according to the present invention relates to an oil draining device for regulating the outflow of lubricating oil to the turbine rotor of the turbocharger. The oil draining device according to the present invention has the following features in order to achieve the above object. That is, the oil draining device of the present invention includes the following features alone or in combination as appropriate.

上記目的を達成するための本発明に係るタービン軸における油切装置における第1の特徴は、タービン軸と、当該タービン軸の一方の端部に連結するタービンロータと、当該タービン軸に嵌入し当該タービン軸の他方に配置する軸受と、当該タービン軸を嵌通させて収容するハウジングと、当該タービンロータと当該軸受との間に位置し当該タービン軸が嵌通する当該ハウジング端部のハウジング嵌通部と、を有するターボチャージャーのタービン軸における油切装置であって、前記ハウジング嵌通部と前記軸受との間の所定位置で、前記タービン軸の軸方向に直交する放射方向に弾性回復により拡径させて、前記ハウジング内に形成される支持部に当接させた内周が円弧状の油切用部材を備えていることである。   The first feature of the oil drainage device for a turbine shaft according to the present invention for achieving the above object is that a turbine shaft, a turbine rotor connected to one end of the turbine shaft, and a turbine rotor fitted into the turbine shaft A bearing disposed on the other side of the turbine shaft, a housing for receiving and accommodating the turbine shaft, and a housing fitting at the end of the housing located between the turbine rotor and the bearing and through which the turbine shaft is fitted. An oil draining device for a turbine shaft of a turbocharger having a portion, wherein the device is expanded by elastic recovery in a radial direction perpendicular to the axial direction of the turbine shaft at a predetermined position between the housing fitting portion and the bearing. The inner periphery which is made to have a diameter and is brought into contact with the support portion formed in the housing includes an arc-shaped oil draining member.

この構成によると、油切用部材は、タービン軸の軸方向に直交する放射方向に拡がって配置される。油切用部材が放射方向に拡がって配置されることにより、タービン軸の軸方向に直交する方向の空間を有効に利用することが可能となる。つまり、油切用部材と軸受との間に形成される油切り空間の容積を大きくできる。よって、軸受部からタービンロータ側に漏れ出し噴霧状となった潤滑油が一時溜まる上記油切り空間から、タービンロータ側に漏れ出す潤滑油の量を抑えることができる。すなわち、タービンロータ側へ漏れ出そうとする潤滑油の流出規制性能を向上させることができる。   According to this configuration, the oil draining member is disposed so as to extend in the radial direction perpendicular to the axial direction of the turbine shaft. By arranging the oil draining member so as to expand in the radial direction, it is possible to effectively use the space in the direction orthogonal to the axial direction of the turbine shaft. That is, the volume of the oil removal space formed between the oil removal member and the bearing can be increased. Therefore, it is possible to suppress the amount of lubricating oil leaking to the turbine rotor side from the oil draining space where the lubricating oil leaked from the bearing portion to the turbine rotor side and temporarily accumulated is sprayed. That is, it is possible to improve the outflow restriction performance of the lubricating oil that is about to leak to the turbine rotor side.

また、油切用部材は、縮径させた状態でハウジング内に挿入できるので、ハウジング嵌通部のシール性を高くするためにハウジング嵌通部の径を油切用部材の寸法より小さくしても、油切用部材をハウジング内に挿入できる。さらに、油切用部材は、弾性回復により拡径してハウジング内に形成される支持部に固定されるため、油切用部材によりタービン軸の慣性モーメントを大きくすることはなく、ターボチャージャーの過渡特性を低下させることはない。   In addition, since the oil draining member can be inserted into the housing in a reduced diameter state, the diameter of the housing fitting part is made smaller than the dimension of the oil draining member in order to increase the sealing performance of the housing fitting part. Also, the oil draining member can be inserted into the housing. Further, since the oil draining member is fixed to a support portion formed in the housing by expanding its diameter by elastic recovery, the oil draining member does not increase the moment of inertia of the turbine shaft, and the turbocharger transient The characteristic is not deteriorated.

また、本発明に係るタービン軸における油切装置における第2の特徴は、前記油切用部材は、一部に切れ目の設けられた環状のC形部材であって、前記支持部に当接させた状態で、前記タービンロータ側の径より前記軸受側の径が大きい切頭円錐体状の外形形状を有していることである。   Further, a second feature of the oil draining device for a turbine shaft according to the present invention is that the oil draining member is an annular C-shaped member partially provided with a cut, and is brought into contact with the support portion. In this state, the outer diameter of the truncated cone is larger than the diameter of the turbine rotor.

この構成によると、油切用部材を一部に切れ目の設けられた環状のC形部材とすることで、油切用部材は簡易な構造となる。また、油切用部材は、軸受側の径がタービンロータ側の径より大きい切頭円錐体状の外形形状であるので、軸受部からタービンロータ側に漏れ出し噴霧状となった潤滑油を、タービンロータ側へ漏れ出させにくい。   According to this configuration, the oil draining member has a simple structure by forming the oil draining member into an annular C-shaped member partially provided with a cut. Further, since the oil cutting member has a frustoconical outer shape in which the diameter on the bearing side is larger than the diameter on the turbine rotor side, the lubricating oil leaking from the bearing portion to the turbine rotor side and spraying is obtained. Difficult to leak to the turbine rotor side.

以下、本発明を実施するための形態について図面を参照しつつ説明する。尚、以下の説明では、本発明に係るタービン軸における油切装置の説明と共に、本発明に係る油切装置の製造方法についても説明する。
まず、図1、2に基づき、本発明の一実施形態に係るタービン軸における油切装置を備えたターボチャージャー1について詳細に説明する。図1は、本発明の一実施形態に係るタービン軸における油切装置を示す模式図である。図2は、図1に示す油切用部材8の模式図である。
Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In addition, in the following description, the manufacturing method of the oil drainage apparatus which concerns on this invention is demonstrated with description of the oil drainage apparatus in the turbine shaft which concerns on this invention.
First, based on FIG. 1, 2, the turbocharger 1 provided with the oil draining device in the turbine shaft which concerns on one Embodiment of this invention is demonstrated in detail. FIG. 1 is a schematic view showing an oil drain device in a turbine shaft according to an embodiment of the present invention. FIG. 2 is a schematic view of the oil draining member 8 shown in FIG.

図1に示すように、本発明の一実施形態に係るタービン軸における油切装置を供えたターボチャージャー1は、タービン軸2と、タービン軸2の一方の端部に連結するタービンロータ3と、タービン軸2の他方の端部にタービン軸2と同軸に連結するコンプレッサロータ(不図示)と、タービン軸2に嵌入しタービン軸2の他方に配置する軸受4と、タービン軸2を嵌通させて収容するハウジング5とを備えている。ハウジング5のタービンロータ3側の端部には、タービンロータ3と軸受4との間に位置しタービン軸2が嵌通するハウジング嵌通部6がある。   As shown in FIG. 1, a turbocharger 1 provided with an oil draining device for a turbine shaft according to an embodiment of the present invention includes a turbine shaft 2, a turbine rotor 3 connected to one end of the turbine shaft 2, and A compressor rotor (not shown) connected coaxially to the turbine shaft 2 at the other end of the turbine shaft 2, a bearing 4 fitted into the turbine shaft 2 and disposed on the other end of the turbine shaft 2, and the turbine shaft 2 are fitted. And a housing 5 that accommodates. At the end of the housing 5 on the turbine rotor 3 side, there is a housing fitting portion 6 that is located between the turbine rotor 3 and the bearing 4 and into which the turbine shaft 2 is fitted.

また、タービン軸2には、タービンロータ3と軸受4との間に、軸受4側から、内周が円弧状の油切用部材8、円筒状の油切り9、外周部にシールリング7を取り付けた円筒状のスペーサ11の順で、潤滑油供給部12から軸受4に供給された潤滑油をタービンロータ3側に流出させないための部材が配置されている。尚、油切り9およびシールリング7は、本発明に係るタービン軸における油切装置で必須のものではない。シールリング7が配置されるハウジング嵌通部6は、軸受4側からの潤滑油をタービンロータ3が収容されるハウジング(不図示)内に流出させないための最終のシール部である。尚、シールリング7は、ハウジング5の内壁側に装着されていてもよい。   Further, the turbine shaft 2 is provided between the turbine rotor 3 and the bearing 4 from the bearing 4 side, with an oil draining member 8 having an arcuate inner periphery, a cylindrical oil draining member 9 and a seal ring 7 on the outer peripheral portion. In order of the attached cylindrical spacer 11, members for preventing the lubricant supplied from the lubricant supply unit 12 to the bearing 4 from flowing out to the turbine rotor 3 side are arranged. The oil drain 9 and the seal ring 7 are not essential in the oil drain device for the turbine shaft according to the present invention. The housing fitting portion 6 in which the seal ring 7 is disposed is a final seal portion for preventing the lubricating oil from the bearing 4 side from flowing out into a housing (not shown) in which the turbine rotor 3 is accommodated. The seal ring 7 may be mounted on the inner wall side of the housing 5.

また、ハウジング嵌通部6と軸受4との間におけるハウジング5の内壁10の径は、軸受4が配置された部分におけるハウジング5の内壁の径よりも大きい。また、ハウジング5の内壁10は、タービンロータ3側から軸受4側に向けてタービン軸2中心方向に傾斜する斜面となっている。これにより、軸受4側からの油を溜めて排除できるようになっている。尚、ハウジング5の内壁10は、軸受4側からタービンロータ3側に向けてタービン軸2中心方向に傾斜する斜面であってもよいし、タービン軸2の軸方向Xに平行な面であってもよいし、円弧状の面であってもよい。   Further, the diameter of the inner wall 10 of the housing 5 between the housing fitting portion 6 and the bearing 4 is larger than the diameter of the inner wall of the housing 5 in the portion where the bearing 4 is disposed. Further, the inner wall 10 of the housing 5 is an inclined surface that is inclined toward the center of the turbine shaft 2 from the turbine rotor 3 side toward the bearing 4 side. Thereby, the oil from the bearing 4 side can be accumulated and removed. The inner wall 10 of the housing 5 may be a slope inclined in the center direction of the turbine shaft 2 from the bearing 4 side toward the turbine rotor 3 side, or a surface parallel to the axial direction X of the turbine shaft 2. Alternatively, it may be an arcuate surface.

次に、図2に基づき、油切用部材8について説明する。図2(a)は、油切用部材8の形状を示す平面図であり、図2(b)は、図2(a)に示す油切用部材8の側面図である。図2(a)および図2(b)に示すように、油切用部材8は、一部に切れ目23の設けられた環状のC形部材であって、外部からなんらの外力を作用させていない状態においては、平板状の形態を有している。   Next, the oil draining member 8 will be described with reference to FIG. Fig.2 (a) is a top view which shows the shape of the member 8 for oil draining, FIG.2 (b) is a side view of the member 8 for oil draining shown to Fig.2 (a). As shown in FIGS. 2 (a) and 2 (b), the oil draining member 8 is an annular C-shaped member partially provided with a cut 23, and is applied with some external force from the outside. In the absence, it has a flat plate shape.

図2(c)は、油切用部材8の切れ目23部分の部材を相互に重ね合わせて、油切用部材8を弾性変形で縮径させた状態を示す平面図であり、図2(d)は、図2(c)に示す油切用部材8の側面図である。図2(d)に示すように、弾性変形で縮径させた油切用部材8は、円錐体の頭部を底面と平行な平面で切り取った残りの部分の立体である切頭円錐体状の外形形状を有している。   FIG. 2C is a plan view showing a state in which the members of the cut 23 portion of the oil draining member 8 are overlapped with each other and the diameter of the oil draining member 8 is reduced by elastic deformation. ) Is a side view of the oil draining member 8 shown in FIG. As shown in FIG. 2D, the oil draining member 8 whose diameter has been reduced by elastic deformation is a truncated cone shape which is a solid of the remaining portion obtained by cutting the head of the cone in a plane parallel to the bottom surface. It has the outer shape.

図1に戻り、タービン軸2に挿入された油切用部材8は、油切り9と軸受4との間で、タービン軸2の軸方向Xに直交する放射方向Yに弾性回復により拡径させて、油切用部材8の外周をハウジング5内に形成される支持部であるハウジング5の内壁10に当接させられている。図1に示すように、油切用部材8の弾性変形が完全に回復していないため、油切用部材8は、タービンロータ3側の径D3より軸受4側の径D1が大きい切頭円錐体状の外形形状でハウジング5の内壁10に当接して固定されている。よって、油切用部材8はタービン軸2に固定されていないので、油切用部材8によりタービン軸2の慣性モーメントを大きくすることはなく、ターボチャージャー1の過渡特性を低下させることはない。   Returning to FIG. 1, the oil draining member 8 inserted into the turbine shaft 2 is expanded by elastic recovery between the oil drain 9 and the bearing 4 in a radial direction Y orthogonal to the axial direction X of the turbine shaft 2. Thus, the outer periphery of the oil draining member 8 is brought into contact with the inner wall 10 of the housing 5 which is a support portion formed in the housing 5. As shown in FIG. 1, since the elastic deformation of the oil draining member 8 has not completely recovered, the oil draining member 8 is a truncated cone having a diameter D1 on the bearing 4 side larger than the diameter D3 on the turbine rotor 3 side. The outer shape of the body is fixed in contact with the inner wall 10 of the housing 5. Therefore, since the oil draining member 8 is not fixed to the turbine shaft 2, the moment of inertia of the turbine shaft 2 is not increased by the oil draining member 8, and the transient characteristics of the turbocharger 1 are not deteriorated.

尚、油切用部材8は、タービン軸2を嵌通させて収容するハウジング5の内壁10に限らず、例えば、軸受4を収容するためのハウジングの内壁や、別途設けられる油切用部材8を当接させる専用の環状の当接用部材などの支持部に当接させてもよい。また、油切用部材8の軸方向Xの位置は、油切り9と軸受4との間に限られることはなく、ハウジング嵌通部6と軸受4との間であればよい。   The oil draining member 8 is not limited to the inner wall 10 of the housing 5 in which the turbine shaft 2 is fitted and accommodated. For example, the inner wall of the housing for accommodating the bearing 4 or a separately provided oil draining member 8. You may make it contact | abut to support parts, such as a cyclic | annular contact member for exclusive use which contacts. Further, the position of the oil draining member 8 in the axial direction X is not limited between the oil drain 9 and the bearing 4, and may be between the housing fitting portion 6 and the bearing 4.

次に、本発明に係る油切装置の製造方法について説明する。まず、内周が円弧状の油切用部材8を、ハウジング嵌通部6のハウジング5の内壁径D2よりも小さく弾性変形で縮径させた状態で、タービンロータ3側からハウジング5内に挿入する(挿入工程)。ここでは、タービン軸2が収容される前のハウジング5内に油切用部材8を挿入してもよいし、油切用部材8が挿入される前にハウジング5内に収容されたタービン軸に対して油切用部材8を挿入してもよい。   Next, the manufacturing method of the oil draining device according to the present invention will be described. First, the oil draining member 8 having an arcuate inner periphery is inserted into the housing 5 from the turbine rotor 3 side in a state where the diameter is reduced by elastic deformation smaller than the inner wall diameter D2 of the housing 5 of the housing fitting portion 6. (Insertion process). Here, the oil draining member 8 may be inserted into the housing 5 before the turbine shaft 2 is accommodated, or the turbine shaft accommodated in the housing 5 before the oil draining member 8 is inserted. On the other hand, the oil draining member 8 may be inserted.

油切用部材8を縮径させた状態でハウジング5内に挿入するので、ハウジング嵌通部6の径を油切用部材8の寸法より小さくしても、油切用部材8をハウジング5内に挿入できる。つまり、ハウジング嵌通部6のシール長を短くすることができ、ハウジング嵌通部6のシール性を向上させることができる。   Since the oil draining member 8 is inserted into the housing 5 with a reduced diameter, the oil draining member 8 is inserted into the housing 5 even if the diameter of the housing fitting portion 6 is smaller than the dimension of the oil draining member 8. Can be inserted into. That is, the seal length of the housing fitting part 6 can be shortened, and the sealing performance of the housing fitting part 6 can be improved.

次に、ハウジング5内に挿入した油切用部材8を、ハウジング嵌通部6と軸受4との間で、タービン軸2の軸方向Xに直交する放射方向Yに弾性回復により拡径させて、油切用部材8の外周をハウジング5内に形成される支持部であるハウジング5内の内壁10に当接させる(装着工程)。その後、ハウジング5内にタービン軸2が収容されていない場合は、ハウジング5内にタービン軸2を収容する。そして、油切り9、スペーサ11の順で、油切り9およびシールリング7を取り付けたスペーサ11をタービン軸2に取り付けてハウジング5内に収容する。最後に、タービンロータ3をタービン軸2の端部に取り付ける。尚、本実施形態において、油切用部材8は、油切り9と軸受4との間に配置されている。   Next, the oil draining member 8 inserted into the housing 5 is expanded in diameter in the radial direction Y perpendicular to the axial direction X of the turbine shaft 2 between the housing fitting portion 6 and the bearing 4 by elastic recovery. The outer periphery of the oil draining member 8 is brought into contact with the inner wall 10 in the housing 5 which is a support portion formed in the housing 5 (mounting process). Thereafter, when the turbine shaft 2 is not accommodated in the housing 5, the turbine shaft 2 is accommodated in the housing 5. Then, in the order of the oil drain 9 and the spacer 11, the spacer 11 with the oil drain 9 and the seal ring 7 attached is attached to the turbine shaft 2 and accommodated in the housing 5. Finally, the turbine rotor 3 is attached to the end of the turbine shaft 2. In the present embodiment, the oil draining member 8 is disposed between the oil drain 9 and the bearing 4.

油切用部材8を弾性回復により拡径させ、ハウジング5内の内壁10に当接させて装着することにより、油切用部材8は、タービン軸2の軸方向Xに直交する放射方向Yに向けて拡がって配置される。これにより、軸方向Xに直交する方向の空間をハウジング内壁10まで有効に利用することが可能となる。つまり、油切用部材8と軸受4との間に形成される油切り空間Sの容積を大きくできる。よって、軸受4部からタービンロータ3側に漏れ出し噴霧状となった潤滑油が一時溜まる油切り空間Sから、タービンロータ3側に漏れ出す潤滑油の量を抑えることができる。すなわち、タービンロータ3側へ漏れ出そうとする潤滑油の流出規制性能を向上させることができるのである。油切用部材8を装着することによりシール性が向上するので、油切り9の外径を従来よりも小さくすることができる。   By expanding the diameter of the oil draining member 8 by elastic recovery and mounting it in contact with the inner wall 10 in the housing 5, the oil draining member 8 is moved in a radial direction Y perpendicular to the axial direction X of the turbine shaft 2. It is arranged to expand toward. Thereby, the space in the direction orthogonal to the axial direction X can be effectively used up to the housing inner wall 10. That is, the volume of the oil draining space S formed between the oil draining member 8 and the bearing 4 can be increased. Therefore, it is possible to suppress the amount of the lubricating oil leaking to the turbine rotor 3 side from the oil draining space S where the lubricating oil leaked from the bearing 4 portion to the turbine rotor 3 side and temporarily sprayed is accumulated. That is, it is possible to improve the outflow restriction performance of the lubricating oil that is about to leak to the turbine rotor 3 side. Since the sealing performance is improved by mounting the oil draining member 8, the outer diameter of the oil drain 9 can be made smaller than before.

また、油切用部材8を、軸受4側の径D1がタービンロータ3側の径D3より大きい切頭円錐体状の外形形状としているので、油切用部材8は、油切り空間Sを覆うように形成され、軸受4部からタービンロータ3側に漏れ出し噴霧状となった潤滑油をタービンロータ3側へ漏れ出させにくい。   Further, since the oil draining member 8 has a frustoconical outer shape in which the diameter D1 on the bearing 4 side is larger than the diameter D3 on the turbine rotor 3 side, the oil draining member 8 covers the oil draining space S. Thus, the lubricating oil that has leaked from the bearing 4 to the turbine rotor 3 side and has become sprayed is unlikely to leak to the turbine rotor 3 side.

さらに、ハウジング嵌通部6のハウジング5の内径D2を、ハウジング5内に装着された油切用部材8の外径D1よりも小さくしているので、ハウジング嵌通部6のシール長を短くすることができ、ハウジング嵌通部6のシール性を向上させることができる。   Further, since the inner diameter D2 of the housing 5 of the housing fitting portion 6 is smaller than the outer diameter D1 of the oil draining member 8 mounted in the housing 5, the seal length of the housing fitting portion 6 is shortened. It is possible to improve the sealing performance of the housing fitting portion 6.

さらに、支持部であるハウジング5内の内壁10に当接させた状態の油切用部材8の内径D3を、タービン軸2の径D4よりも大きくしているので、油切用部材8とタービン軸2との接触は防止される。つまり、油切用部材8とタービン軸2との接触によるタービン軸2の摩擦ロスは生じにくい。尚、支持部に当接させた状態の油切用部材8の内径D3を、油切り9の外径よりも大きくしてもよい。   Furthermore, since the inner diameter D3 of the oil draining member 8 in contact with the inner wall 10 in the housing 5 as a support portion is larger than the diameter D4 of the turbine shaft 2, the oil draining member 8 and the turbine Contact with the shaft 2 is prevented. That is, friction loss of the turbine shaft 2 due to contact between the oil draining member 8 and the turbine shaft 2 is unlikely to occur. The inner diameter D3 of the oil draining member 8 in contact with the support portion may be larger than the outer diameter of the oil drain 9.

尚、油切用部材の外周の形状は、円弧状に限られるものではなく、切れ目が設けられた矩形状、五角形状、六角形状などの多角形状としてもよい。   The shape of the outer periphery of the oil draining member is not limited to an arc shape, and may be a polygonal shape such as a rectangular shape with a cut, a pentagonal shape, or a hexagonal shape.

図3は、図1に示すタービン軸における油切装置の変形例を示す模式図である。尚、本変形例の説明においては、図1に示すターボチャージャー1と同一の構成部材については、同一の符号を付しその説明を省略する。図3(a)に示すように、本変形例では、ハウジング5の内壁10に対して、タービン軸2の回転方向に段差21を内壁10全周に設けている。これにより、油切用部材8を支持部であるハウジング5の内壁10に対してより確実に固定することができる。尚、段差21をハウジング5の内壁10の全周に設ける必要はなく一部に設けてもよい。   FIG. 3 is a schematic view showing a modification of the oil draining device in the turbine shaft shown in FIG. In the description of this modification, the same components as those of the turbocharger 1 shown in FIG. As shown in FIG. 3A, in this modification, a step 21 is provided on the entire circumference of the inner wall 10 in the rotational direction of the turbine shaft 2 with respect to the inner wall 10 of the housing 5. Thereby, the oil draining member 8 can be more reliably fixed to the inner wall 10 of the housing 5 that is the support portion. The step 21 need not be provided on the entire circumference of the inner wall 10 of the housing 5 but may be provided on a part thereof.

また、図3(b)に示す変形例では、ハウジング5の内壁10に対して、タービン軸2の回転方向にミゾ22を内壁10全周に設けている。これにより、油切用部材8を支持部であるハウジング5の内壁10に対してより確実に固定することができる。尚、ミゾ22をハウジング5の内壁10の全周に設ける必要はなく一部に設けてもよい。   In the modification shown in FIG. 3B, grooves 22 are provided on the entire circumference of the inner wall 10 in the rotational direction of the turbine shaft 2 with respect to the inner wall 10 of the housing 5. Thereby, the oil draining member 8 can be more reliably fixed to the inner wall 10 of the housing 5 that is the support portion. The grooves 22 do not have to be provided on the entire circumference of the inner wall 10 of the housing 5 and may be provided on a part thereof.

図4は、図1に示すタービン軸における油切装置の他の変形例を示す模式図である。尚、本変形例の説明においては、図1に示すターボチャージャー1と同一の構成部材については、同一の符号を付しその説明を省略する。図4に示すように、本変形例では、ハウジング嵌通部6と軸受4との間に2つの油切用部材(8、8’)を装着させている。これにより、2つの油切り空間(S、S’)が形成され、軸受4部からタービンロータ3側に漏れ出し噴霧状となった潤滑油がタービンロータ3側に漏れ出す量をより抑えることができる。尚、油切用部材の数量は、2つに限定されることはない。   FIG. 4 is a schematic view showing another modification of the oil draining device in the turbine shaft shown in FIG. In the description of this modification, the same components as those of the turbocharger 1 shown in FIG. As shown in FIG. 4, in this modification, two oil draining members (8, 8 ′) are mounted between the housing fitting portion 6 and the bearing 4. Thereby, two oil draining spaces (S, S ′) are formed, and it is possible to further suppress the amount of lubricating oil leaking from the bearing 4 portion to the turbine rotor 3 side and sprayed into the turbine rotor 3 side. it can. Note that the number of oil draining members is not limited to two.

以上、本発明の実施形態について説明したが、本発明は上述の実施の形態に限られるものではなく、特許請求の範囲に記載した限りにおいて様々に変更して実施することが可能なものである。   Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. .

本発明の一実施形態に係るタービン軸用油切装置を示す模式図である。It is a mimetic diagram showing the oil drain device for turbine shafts concerning one embodiment of the present invention. 図1に示す油切用部材の模式図である。It is a schematic diagram of the member for oil draining shown in FIG. 図1に示すタービン軸用油切装置の変形例を示す模式図である。It is a schematic diagram which shows the modification of the oil drain apparatus for turbine shafts shown in FIG. 図1に示すタービン軸用油切装置の他の変形例を示す模式図である。It is a schematic diagram which shows the other modification of the oil drain apparatus for turbine shafts shown in FIG.

符号の説明Explanation of symbols

1:ターボチャージャー
2:タービン軸
3:タービンロータ
4:軸受
5:ハウジング
6:ハウジング嵌通部
8、24:油切用部材
X:軸方向
Y:放射方向
1: Turbocharger 2: Turbine shaft 3: Turbine rotor 4: Bearing 5: Housing 6: Housing fitting portion 8, 24: Oil draining member X: Axial direction Y: Radial direction

Claims (7)

タービン軸と、当該タービン軸の一方の端部に連結するタービンロータと、当該タービン軸に嵌入し当該タービン軸の他方に配置する軸受と、当該タービン軸を嵌通させて収容するハウジングと、当該タービンロータと当該軸受との間に位置し当該タービン軸が嵌通する当該ハウジング端部のハウジング嵌通部と、を有するターボチャージャーのタービン軸における油切装置の製造方法であって、
内周が円弧状の油切用部材を、弾性変形で縮径させた状態で、前記タービンロータ側から前記ハウジング内に挿入する挿入工程と、
前記ハウジング内に挿入した前記油切用部材を、前記ハウジング嵌通部と前記軸受との間の所定位置で、前記タービン軸の軸方向に直交する放射方向に弾性回復により拡径させて、当該油切用部材を前記ハウジング内に形成される支持部に当接させる装着工程と、を備えていることを特徴とする、ターボチャージャーのタービン軸における油切装置の製造方法。
A turbine shaft, a turbine rotor coupled to one end of the turbine shaft, a bearing that is fitted into the turbine shaft and disposed on the other of the turbine shaft, a housing that is fitted and accommodated with the turbine shaft, A method of manufacturing an oil draining device in a turbine shaft of a turbocharger, which has a housing fitting portion at an end of the housing that is located between a turbine rotor and the bearing and into which the turbine shaft is fitted,
An insertion step of inserting an oil draining member having an arcuate inner circumference into the housing from the turbine rotor side in a state where the diameter is reduced by elastic deformation;
The diameter of the oil draining member inserted into the housing is expanded by elastic recovery in a radial direction perpendicular to the axial direction of the turbine shaft at a predetermined position between the housing fitting portion and the bearing. And a mounting step of bringing an oil draining member into contact with a support portion formed in the housing. A method for manufacturing an oil draining device in a turbine shaft of a turbocharger.
前記挿入工程において、前記油切用部材を縮径させた状態で、前記ハウジング内の前記タービン軸に挿入し、
前記装着工程において、前記油切用部材を拡径させて、当該油切用部材の外周を前記支持部である前記ハウジング内の内壁に当接させることを特徴とする、請求項1に記載の油切装置の製造方法。
In the inserting step, in a state where the diameter of the oil draining member is reduced, it is inserted into the turbine shaft in the housing,
2. The mounting method according to claim 1, wherein in the mounting step, the oil draining member is expanded in diameter, and an outer periphery of the oil draining member is brought into contact with an inner wall of the housing which is the support portion. A method for producing an oil draining device.
前記油切用部材は、一部に切れ目の設けられた環状のC形部材であって、
前記挿入工程において、前記C形部材を縮径させて切頭円錐体状の外形形状にして挿入し、
前記装着工程において、前記C形部材を拡径させて前記タービンロータ側の径より前記軸受側の径が大きい切頭円錐体状の外形形状で前記支持部に当接させることを特徴とする、請求項1又は請求項2に記載の油切装置の製造方法。
The oil draining member is an annular C-shaped member provided with a cut in part,
In the inserting step, the C-shaped member is reduced in diameter and inserted into a truncated cone-shaped outer shape,
In the mounting step, the C-shaped member is expanded to contact the support portion with a truncated cone-shaped outer shape having a larger diameter on the bearing side than the diameter on the turbine rotor side. The manufacturing method of the oil draining apparatus of Claim 1 or Claim 2.
前記支持部に当接させた状態の前記油切用部材の外径を、前記ハウジング嵌通部の前記ハウジングの内径よりも大きくすることを特徴とする、請求項1乃至請求項3のいずれか1項に記載の油切装置の製造方法。   The outer diameter of the oil draining member in a state of being in contact with the support portion is made larger than the inner diameter of the housing of the housing fitting portion. The manufacturing method of the oil draining apparatus of 1 item | term. 前記支持部に当接させた状態の前記油切用部材の内径を、前記タービン軸の径よりも大きくすることを特徴とする、請求項1乃至請求項4のいずれか1項に記載の油切装置の製造方法。   The oil according to any one of claims 1 to 4, wherein an inner diameter of the oil draining member in contact with the support portion is larger than a diameter of the turbine shaft. Cutting device manufacturing method. タービン軸と、当該タービン軸の一方の端部に連結するタービンロータと、当該タービン軸に嵌入し当該タービン軸の他方に配置する軸受と、当該タービン軸を嵌通させて収容するハウジングと、当該タービンロータと当該軸受との間に位置し当該タービン軸が嵌通する当該ハウジング端部のハウジング嵌通部と、を有するターボチャージャーのタービン軸における油切装置であって、
前記ハウジング嵌通部と前記軸受との間の所定位置で、前記タービン軸の軸方向に直交する放射方向に弾性回復により拡径させて、前記ハウジング内に形成される支持部に当接させた内周が円弧状の油切用部材を備えていることを特徴とする、タービン軸における油切装置。
A turbine shaft, a turbine rotor coupled to one end of the turbine shaft, a bearing that is fitted into the turbine shaft and disposed on the other of the turbine shaft, a housing that is fitted and accommodated with the turbine shaft, An oil draining device for a turbine shaft of a turbocharger having a housing fitting portion at an end of the housing that is located between the turbine rotor and the bearing and through which the turbine shaft is fitted,
At a predetermined position between the housing fitting portion and the bearing, the diameter is expanded by elastic recovery in a radial direction orthogonal to the axial direction of the turbine shaft, and is brought into contact with a support portion formed in the housing. An oil draining device for a turbine shaft, characterized in that an oil draining member having an arcuate inner periphery is provided.
前記油切用部材は、一部に切れ目の設けられた環状のC形部材であって、前記支持部に当接させた状態で、前記タービンロータ側の径より前記軸受側の径が大きい切頭円錐体状の外形形状を有していることを特徴とする、請求項6に記載のタービン軸における油切装置。   The oil draining member is an annular C-shaped member partially provided with a cut, and in a state in which the oil draining member is in contact with the support portion, the diameter on the bearing side is larger than the diameter on the turbine rotor side. The oil drainage device for a turbine shaft according to claim 6, wherein the oil drainage device has a head cone-like outer shape.
JP2007077287A 2007-03-23 2007-03-23 Oil thrower on turbine shaft of turbocharger, and method for manufacturing same Pending JP2008232124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007077287A JP2008232124A (en) 2007-03-23 2007-03-23 Oil thrower on turbine shaft of turbocharger, and method for manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007077287A JP2008232124A (en) 2007-03-23 2007-03-23 Oil thrower on turbine shaft of turbocharger, and method for manufacturing same

Publications (1)

Publication Number Publication Date
JP2008232124A true JP2008232124A (en) 2008-10-02

Family

ID=39905215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007077287A Pending JP2008232124A (en) 2007-03-23 2007-03-23 Oil thrower on turbine shaft of turbocharger, and method for manufacturing same

Country Status (1)

Country Link
JP (1) JP2008232124A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220061554A (en) * 2020-11-06 2022-05-13 한국생산기술연구원 Low temperature turbine bearing lubricant device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220061554A (en) * 2020-11-06 2022-05-13 한국생산기술연구원 Low temperature turbine bearing lubricant device
KR102400636B1 (en) * 2020-11-06 2022-05-23 한국생산기술연구원 Low temperature turbine bearing lubricant device

Similar Documents

Publication Publication Date Title
JP6196408B1 (en) Sealing device
RU2589417C2 (en) Shaft sealing system
JP2015522773A (en) Gasket device for turbomachine bearings, including two elastic seals
KR20100092381A (en) Compressor-side shaft seal of an exhaust-gas turbocharger
CN104061317A (en) Non-contact seal device for high-speed shaft of gear speed reducer
JPWO2016111303A1 (en) Sealing device
JP2007046642A (en) Supercharger and fully floating bearing
JP2009270612A (en) Bearing structure of turbocharger
JP2002213450A (en) Floating bush bearing and turbocharger having the bearing
JP2007113708A (en) Rotation stop structure of bearing, and supercharger using the same
CN104454150A (en) Turbocharger gas compressor sealing structure
KR101653358B1 (en) Thrust air bearing
EP3078861A1 (en) Multi-stage electrically-powered centrifugal compressor
JP2006200683A (en) Slide bearing device and pump device
JP6378548B2 (en) Sealing device
JP2008232124A (en) Oil thrower on turbine shaft of turbocharger, and method for manufacturing same
JP6597780B2 (en) Seal structure and turbocharger
JP6513558B2 (en) Sealed structure
US20200088066A1 (en) Turbocharger and mating ring included therein
JPS62210282A (en) Shift seal device of oil-free fluid machine
JP2007224900A (en) Supercharger
JP6637227B2 (en) Turbocharger oil leakage control structure
JP2007225064A (en) Sealing device
JP6545486B2 (en) Sealing device
KR100747233B1 (en) Assembly structure of a bearig unit for a solid of revolution at a timming chain cover and assembly method thereof