KR20200068981A - Lubricating apparatus for pinion shaft - Google Patents

Lubricating apparatus for pinion shaft Download PDF

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Publication number
KR20200068981A
KR20200068981A KR1020180156002A KR20180156002A KR20200068981A KR 20200068981 A KR20200068981 A KR 20200068981A KR 1020180156002 A KR1020180156002 A KR 1020180156002A KR 20180156002 A KR20180156002 A KR 20180156002A KR 20200068981 A KR20200068981 A KR 20200068981A
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South Korea
Prior art keywords
lubricating oil
shaft body
pinion shaft
shaft
lubricant
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KR1020180156002A
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Korean (ko)
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KR102126231B1 (en
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이만해
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현대 파워텍 주식회사
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    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0426—Means for guiding lubricant into an axial channel of a shaft
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • 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
    • F16N—LUBRICATING
    • F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
    • 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
    • F16N—LUBRICATING
    • F16N2210/00—Applications
    • F16N2210/26—Spinning spindles

Abstract

Disclosed is a pinion shaft lubricating apparatus. According to the present invention, the pinion shaft lubricating apparatus comprises: a pinion shaft unit for receiving lubricant and discharging the same to the outside; and a bearing unit for surrounding the outer surface of the pinion shaft unit. The pinion shaft unit includes: a cylindrical shaft body unit; a flow path unit formed inside the shaft body unit and having the lubricant flowing therethrough; a lubricant discharge unit communicating with the flow path unit, opened on a surface of the shaft body unit toward the bearing unit, and discharging the lubricant therethrough; and a lubricant guide unit formed on the surface of the shaft body unit and guiding the lubricant discharged through the lubricant discharge unit to flow to the surface of the shaft body unit. According to the present invention, the lubricant can be smoothly supplied to the surface of a pinion shaft.

Description

피니언 샤프트 윤활장치{LUBRICATING APPARATUS FOR PINION SHAFT}Lubrication device for pinion shaft{LUBRICATING APPARATUS FOR PINION SHAFT}

본 발명은 피니언 샤프트 윤활장치에 관한 것으로, 보다 상세하게는 피니언 샤프트의 표면에 윤활유의 공급이 원할하게 이루어질 수 있게 하는 피니언 샤프트 윤활장치에 관한 것이다.The present invention relates to a pinion shaft lubricating device, and more particularly, to a pinion shaft lubricating device that enables smooth supply of lubricant to the surface of the pinion shaft.

유성기어장치는 맞물리는 한 쌍의 기어의 일측이 고정되고, 타측이 맞물리면서 그 주위를 도는 기어 전동장치이다. 유성기어장치는 크게 선기어, 피니언기어, 링기어로 구성되고, 세부 구성으로 피니언기어, 피니언기어베어링, 피니언샤프트, 피니언샤프트를 고정하는 캐리어로 구성된다. 피니언샤프트의 중심부에는 피니언기어베어링의 윤활을 위한 홀이 형성된다. A planetary gear device is a gear transmission device in which one side of a pair of engaging gears is fixed, and the other side is engaged and rotates around it. The planetary gear device is largely composed of a sun gear, a pinion gear, and a ring gear, and a detailed configuration includes a pinion gear, a pinion gear bearing, a pinion shaft, and a carrier for fixing the pinion shaft. A hole for lubrication of the pinion gear bearing is formed in the center of the pinion shaft.

종래기술에서 피니언기어의 고회전시, 윤활이 원할하지 않을 경우 피니언샤프트의 표면에 마찰 마모로 인하여 플레이킹(flacking) 현상이 발생된다. 플레이킹은 베어링의 회전으로 말미암아 반복된 접촉 하중을 받아 표면의 피로로 인해 벗겨지는 현상을 의미한다. 플레이킹 현성의 발생으로 유성기어장치의 내구성이 저하되는 문제점이 있다. 따라서 이를 개선할 필요성이 요청된다.In the prior art, when the pinion gear is rotated at a high speed, when lubrication is not desired, flaking occurs due to frictional wear on the surface of the pinion shaft. Flaking refers to the phenomenon of peeling off due to fatigue of the surface under repeated contact load due to the rotation of the bearing. There is a problem in that the durability of the planetary gear device is deteriorated due to the occurrence of flaking manifestation. Therefore, there is a need to improve this.

본 발명의 배경기술은 대한민국 공개특허공보 제10-2018-0073284호(2018.07.02 공개, 발명의 명칭: 윤활개선을 위한 피니언 기어의 구조 및 방법)에 개시되어 있다. Background of the invention is disclosed in Republic of Korea Patent Publication No. 10-2018-0073284 (2018.07.02 published, the name of the invention: the structure and method of the pinion gear for improving lubrication).

본 발명은 상기와 같은 문제점을 해결하기 위해 창출된 것으로, 본 발명의 목적은 피니언 샤프트의 표면에 윤활유의 공급이 원할하게 이루어질 수 있게 하는 피니언 샤프트 윤활장치를 제공하는 것이다.The present invention was created to solve the above problems, and an object of the present invention is to provide a pinion shaft lubrication device that enables smooth supply of lubricant to the surface of the pinion shaft.

본 발명에 따른 피니언 샤프트 윤활장치는: 윤활유를 공급받아 외부로 배출하는 피니언샤프트부; 및 상기 피니언샤프트부의 외측면을 감싸는 베어링부를 포함하고, 상기 피니언샤프트부는, 원통형의 샤프트몸체부; 상기 샤프트몸체부의 내부에 형성되고, 윤활유가 이동되는 유로부; 상기 유로부와 연통되고, 상기 샤프트몸체부의 표면에 상기 베어링부를 향해 개구되게 형성되며, 윤활유가 배출되는 윤활유배출부; 및 상기 샤프트몸체부의 표면에 형성되고, 상기 윤활유배출부 통해 배출되는 윤활유를 상기 샤프트몸체부의 표면으로 유동되게 가이드하는 윤활유가이드부를 포함한다.The pinion shaft lubrication device according to the present invention includes: a pinion shaft unit that receives lubricant and discharges it to the outside; And a bearing portion surrounding an outer surface of the pinion shaft portion, wherein the pinion shaft portion includes a cylindrical shaft body portion; A flow path part formed inside the shaft body part and through which lubricating oil moves; A lubricating oil discharge part communicating with the flow passage part, being formed to be opened toward the bearing part on the surface of the shaft body part, and lubricating oil is discharged; And a lubricant guide portion formed on the surface of the shaft body portion and guiding the lubricant oil discharged through the lubricant discharge portion to flow to the surface of the shaft body portion.

본 발명에서 상기 윤활유가이드부는 상기 샤프트몸체부의 표면에 나선형으로 형성된다.In the present invention, the lubricant guide portion is spirally formed on the surface of the shaft body portion.

본 발명에서 상기 윤활유가이드부는 상기 샤프트몸체부의 길이방향을 따라 오른나선형과 왼나선형이 교차되게 형성된다.In the present invention, the lubricating oil guide portion is formed such that the right and left spirals cross each other along the length direction of the shaft body.

본 발명에서 상기 윤활유가이드부는 상기 샤프트몸체부의 표면에 격자형으로 형성된다.In the present invention, the lubricant guide portion is formed in a lattice shape on the surface of the shaft body portion.

본 발명에서 상기 윤활유가이드부는 단면의 형상이 상기 샤프트몸체부의 표면에 U자형의 홈으로 형성된다.In the present invention, the shape of the lubricating oil guide section is formed as a U-shaped groove on the surface of the shaft body.

본 발명에서 상기 윤활유배출부는 상기 유로부에서 상기 샤프트몸체부의 표면을 향해 최단 경로를 이루도록 형성된다.In the present invention, the lubricating oil discharge portion is formed to form the shortest path from the flow path portion toward the surface of the shaft body portion.

본 발명에 따른 피니언 샤프트 윤활장치에 의하면, 샤프트몸체부에 윤활유가이드부가 형성되어, 윤활유배출부를 통해 배출되는 윤활유가 윤활유가이드부를 따라 샤프트몸체부의 표면에 유동되므로, 윤활과 냉각 성능이 향상될 수 있다.According to the pinion shaft lubrication device according to the present invention, a lubricant guide portion is formed in the shaft body portion, and the lubricant discharged through the lubricant discharge portion flows on the surface of the shaft body portion along the lubricant guide portion, so that lubrication and cooling performance can be improved. .

또한 본 발명에 따르면 윤활과 냉각 성능이 개선되어 제품의 내구성이 향상되고, 사용 수명이 연장될 수 있다.In addition, according to the present invention, the lubrication and cooling performance is improved to improve the durability of the product, and the service life can be extended.

도 1은 본 발명의 일 실시예에 따른 피니언 샤프트 윤활장치를 개략적으로 나타내는 사시도이다.
도 2는 본 발명의 일 실시예에 따른 유성기어장치의 피니언 샤프트 윤활장치를 개략적으로 나타내는 단면도이다.
도 3은 본 발명의 일 실시예에 따른 피니언샤프트부를 개략적으로 나타내는 사시도이다.
도 4는 본 발명의 일 실시예에 따른 피니언 샤프트부를 개략적으로 나타내는 정면도이다.
도 5는 본 발명의 다른 실시예에 따른 피니언 샤프트부를 개략적으로 나타내는 사시도이다.
도 6은 본 발명의 다른 실시예에 따른 피니언 샤프트부를 개략적으로 나타내는 정면도이다.
도 7은 본 발명의 일 실시예에 따른 피니언 샤프트 윤활장치의 작동을 개략적으로 나타내는 단면도이다. 1 is a perspective view schematically showing a pinion shaft lubrication device according to an embodiment of the present invention.
2 is a cross-sectional view schematically showing a pinion shaft lubrication device of a planetary gear device according to an embodiment of the present invention.
3 is a perspective view schematically showing a pinion shaft portion according to an embodiment of the present invention.
4 is a front view schematically showing a pinion shaft part according to an embodiment of the present invention.
5 is a perspective view schematically showing a pinion shaft part according to another embodiment of the present invention.
6 is a front view schematically showing a pinion shaft part according to another embodiment of the present invention.
7 is a cross-sectional view schematically showing the operation of the pinion shaft lubrication device according to an embodiment of the present invention.

이하 첨부된 도면들을 참조하여 본 발명에 따른 피니언 샤프트 윤활장치의 일 실시예를 설명한다. 이러한 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. Hereinafter, an embodiment of a pinion shaft lubrication device according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience.

또한 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로써 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition of these terms should be made based on the contents throughout the specification.

도 1은 본 발명의 일 실시예에 따른 피니언 샤프트 윤활장치를 개략적으로 나타내는 사시도이고, 도 2는 본 발명의 일 실시예에 따른 유성기어장치의 피니언 샤프트 윤활장치를 개략적으로 나타내는 단면도이고, 도 3은 본 발명의 일 실시예에 따른 피니언샤프트부를 개략적으로 나타내는 사시도이고, 도 4는 본 발명의 일 실시예에 따른 피니언 샤프트부를 개략적으로 나타내는 정면도이고, 도 5는 본 발명의 다른 실시예에 따른 피니언 샤프트부를 개략적으로 나타내는 사시도이고, 도 6은 본 발명의 다른 실시예에 따른 피니언 샤프트부를 개략적으로 나타내는 정면도이고, 도 7은 본 발명의 일 실시예에 따른 피니언 샤프트 윤활장치의 작동을 개략적으로 나타내는 단면도이다. 1 is a perspective view schematically showing a pinion shaft lubrication device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view schematically showing a pinion shaft lubrication device of a planetary gear device according to an embodiment of the present invention. Is a perspective view schematically showing a pinion shaft part according to an embodiment of the present invention, FIG. 4 is a front view schematically showing a pinion shaft part according to an embodiment of the present invention, and FIG. 5 is a pinion according to another embodiment of the present invention Figure 6 is a perspective view schematically showing the shaft portion, Figure 6 is a front view schematically showing a pinion shaft portion according to another embodiment of the present invention, Figure 7 is a cross-sectional view schematically showing the operation of the pinion shaft lubrication device according to an embodiment of the present invention to be.

도 1 내지 도 7을 참조하면, 본 발명의 일 실시예에 따른 피니언 샤프트 윤활장치는 피니언샤프트부(100)와 베어링부(200)를 포함한다. 피니언샤프트부(100)는 윤활유를 공급받아 외부로 배출한다. 베어링부(200)는 피니언샤프트부(100)의 외측면을 감싼다. 피니언샤프트부(100)로 공급되는 윤활유는 베어링부(200)에 유막을 형성하여 회전운동을 원할하게 하고, 윤활과 냉각을 향상시켜 내구성을 유지할 수 있다. 1 to 7, a pinion shaft lubrication device according to an embodiment of the present invention includes a pinion shaft part 100 and a bearing part 200. The pinion shaft part 100 receives lubricant and discharges it to the outside. The bearing part 200 surrounds the outer surface of the pinion shaft part 100. The lubricating oil supplied to the pinion shaft portion 100 forms an oil film on the bearing portion 200 to facilitate rotational movement, and improves lubrication and cooling to maintain durability.

본 발명에서 피니언샤프트부(100)와 베어링부(200)는 유성기어장치에 장착된다. 유성기어장치는 맞물리는 한 쌍의 기어의 일측이 고정되고, 타측이 맞물리면서 그 주위를 도는 기어 전동장치이다. 유성기어장치는 선기어(10), 피니언기어(20), 링기어(30)로 구성된다. 피니언기어(20)는 중심부에 피니언샤프트부(100)가 장착되고, 피니언샤프트부(100)의 외측면에 베어링부(200)가 장착된다. In the present invention, the pinion shaft portion 100 and the bearing portion 200 are mounted on a planetary gear device. A planetary gear device is a gear transmission device in which one side of a pair of engaging gears is fixed, and the other side is engaged and rotates around it. The planetary gear device is composed of a sun gear 10, a pinion gear 20, and a ring gear 30. The pinion gear 20 is equipped with a pinion shaft portion 100 at the center, and a bearing portion 200 is mounted on an outer surface of the pinion shaft portion 100.

피니언샤프트부(100)는 샤프트몸체부(110), 유로부(120), 윤활유배출부(130), 윤활유가이드부(140)를 포함한다. 샤프트몸체부(110)는 원통형의 형성된다. The pinion shaft portion 100 includes a shaft body portion 110, a flow path portion 120, a lubricant discharge portion 130, and a lubricant guide portion 140. The shaft body portion 110 is formed in a cylindrical shape.

유로부(120)는 샤프트몸체부(110)의 내부에 관통 형성되는 것으로, 윤활유가 이동되는 유로를 제공한다. 윤활유는 유로부(120)를 따라서 유동된다. 유로부(120)로 유입된 윤활유는 샤프트몸체부(110)가 축회전될 때 원심력에 의해 윤활유배출ㅂ부(130)를 통해 샤프트몸체부(110)의 표면으로 배출된다. The flow path portion 120 is formed through the inside of the shaft body portion 110, and provides a flow path through which the lubricant is moved. Lubricant flows along the flow path portion (120). The lubricating oil introduced into the flow path part 120 is discharged to the surface of the shaft body part 110 through the lubricant discharging part 130 by centrifugal force when the shaft body part 110 is axially rotated.

윤활유배출부(130)는 유로부(120)와 연통되고, 샤프트몸체부(110)의 표면에 베어링부(200)를 향해 개구되게 형성된다. 윤활유배출부(130)는 샤프트몸체부(110)에 개구되게 형성되어, 유로부(120)에서 유동되는 윤활유는 윤활유배출부(130)를 통해 샤프트몸체부(110)의 표면으로 배출된다. The lubricating oil discharge unit 130 communicates with the flow path unit 120 and is formed to be opened toward the bearing unit 200 on the surface of the shaft body unit 110. The lubricating oil discharge part 130 is formed to be opened in the shaft body part 110, and the lubricating oil flowing in the flow path part 120 is discharged to the surface of the shaft body part 110 through the lubricating oil discharge part 130.

윤활유배출부(130)는 유로부(120)에서 샤프트몸체부(110)의 표면을 향해 최단 경로를 이루도록 형성된다. 즉, 윤활유배출부(130)는 유로부(120)에서 샤프트몸체부(110)의 표면을 향해 수직 방향으로 형성된다. 윤활유배출부(130)가 유로부(120)에서 샤프트몸체부(110)의 표면을 향해 최단 경로를 이루게 형성되어, 윤활유가 유로부(120)에서 윤활유배출부(130)를 통해 샤프트몸체부(110)의 표면으로 신속하게 배출될 수 있다.Lubricant discharge unit 130 is formed to form the shortest path from the flow path portion 120 toward the surface of the shaft body portion 110. That is, the lubricating oil discharge unit 130 is formed in the vertical direction from the flow path portion 120 toward the surface of the shaft body portion 110. The lubricating oil discharge unit 130 is formed to form the shortest path from the flow path portion 120 toward the surface of the shaft body portion 110, so that the lubricating oil discharges from the flow path portion 120 through the lubricating oil discharge portion 130 to the shaft body portion ( 110) can be quickly discharged.

윤활유가이드부(140)는 샤프트몸체부(110)의 표면에 형성되는 것으로, 윤활유배출부(130)를 통해 배출된 윤활유를 샤프트몸체부(110)의 표면으로 유동되게 가이드한다. 윤활유가이드부(140)를 따라 이동이 가이드되는 윤활유는 샤프트몸체부(110)의 표면에 고르게 유동되어, 윤활 및 냉각 성능을 향상시킬 수 있다.The lubricating oil guide portion 140 is formed on the surface of the shaft body portion 110 and guides the lubricating oil discharged through the lubricating oil discharge portion 130 to flow to the surface of the shaft body portion 110. The lubricating oil that is guided to move along the lubricating oil guide portion 140 flows evenly on the surface of the shaft body portion 110, thereby improving lubrication and cooling performance.

윤활유가이드부(140)는 단면의 형상이 샤프트몸체부(110)의 표면에 U자형의 홈으로 형성된다. 윤활유가이드부(140)는 단면의 형상이 U자형으로 형성되어, 단면의 형상이 사각형으로 형성되는 경우에 비해 모서리부분에 윤활유가 정체되는 현상이 발생되는 것이 방지될 수 있다. The lubricating oil guide portion 140 is formed in a U-shaped groove on the surface of the shaft body portion 110 in the shape of the cross section. The lubricating oil guide portion 140 has a U-shaped cross-sectional shape, and thus prevents the lubricating oil from stagnating at the corners compared to the case where the cross-sectional shape is formed in a square shape.

도 3 및 도 4를 참조하면, 본 발명의 일 실시예에서 윤활유가이드부(140)는 샤프트몸체부(110)의 표면에 나선형으로 형성된다. 윤활유배출부(130)에서 배출된 윤활유는 윤활유가이드부(140)를 따라 나선상으로 유동되면서 샤프트몸체부(110)의 표면을 윤활 및 냉각시킨다.3 and 4, in one embodiment of the present invention, the lubricating oil guide portion 140 is spirally formed on the surface of the shaft body portion 110. The lubricating oil discharged from the lubricating oil discharge unit 130 flows in a spiral shape along the lubricating oil guide unit 140 to lubricate and cool the surface of the shaft body part 110.

보다 상세하게는 윤활유가이드부(140)는 샤프트몸체부(110)의 길이방향을 따라 오른나선형과 왼나선형이 교차되게 형성된다. 즉, 윤활유가이드부(140)는 샤프트몸체부(110)의 표면에 오른나선형의 나선형과, 왼나선형의 나선형으로 2개의 나선이 형성된다. 따라서 윤활유가이드부(140)는 샤프트몸체부(110)의 표면에 복수개의 "X"자 형상으로 나타난다. In more detail, the lubricating oil guide unit 140 is formed to cross the right spiral and the left spiral along the longitudinal direction of the shaft body 110. That is, the lubricating oil guide portion 140 is formed with two spirals in a right spiral and a left spiral in the surface of the shaft body portion 110. Therefore, the lubricating oil guide portion 140 appears as a plurality of "X" shapes on the surface of the shaft body portion 110.

도 5 및 도 6을 참조하면, 본 발명의 다른 실시예에 따른 윤활유가이드부(140a)는 샤프트몸체부(110a)의 표면에 격자형으로 형성된다. 즉, 윤활유가이드부(140a)는 샤프트몸체부(110a)의 길이방향을 따라 형성되고, 샤프트몸체부(110a)의 원주방향을 따라 형성된다. 따라서 윤활유가이드부(140a)는 샤프트몸체부(110a)에 복수개의 "ㅁ"자 형상으로 나타난다. 5 and 6, the lubricant guide part 140a according to another embodiment of the present invention is formed in a lattice shape on the surface of the shaft body part 110a. That is, the lubricant guide portion 140a is formed along the longitudinal direction of the shaft body portion 110a and is formed along the circumferential direction of the shaft body portion 110a. Therefore, the lubricating oil guide portion 140a appears in a plurality of “ㅁ” shapes on the shaft body portion 110a.

본 발명이 다른 실시예에 따른 피니언 샤프트 윤활장치에서, 피니언샤트부(100a)는 샤프트몸체부(110a), 유로부(120a), 윤활유배출부(130a), 윤활유가이드부(140a)를 포함한다. 샤프트몸체부(110a), 유로부(120a), 윤활유배출부(130a)는 상술한 샤프트몸체부(110), 유로부(120), 윤활유배출부(130)의 설명으로 갈음한다.In the pinion shaft lubrication device according to another embodiment of the present invention, the pinion shaft portion 100a includes a shaft body portion 110a, a flow path portion 120a, a lubricant discharge portion 130a, and a lubricant guide portion 140a. . The shaft body portion 110a, the flow path portion 120a, and the lubricating oil discharge portion 130a are replaced with the descriptions of the shaft body portion 110, the flow path portion 120, and the lubricating oil discharge portion 130 described above.

도 7을 참조하여, 본 발명의 일 실시예에 따른 피니언 샤프트 윤활장치의 작동을 설명한다. Referring to Figure 7, the operation of the pinion shaft lubrication device according to an embodiment of the present invention.

유로부(120)를 통해 유입된 윤활유는 축회전하는 샤프트몸체부(110)에 의해, 샤프트몸체부(110)의 표면으로 관통 형성된 윤활유배출부(130)를 통해 배출된다. 윤활유배출부(130)를 통해 배출된 윤활유는 윤활유가이드부(140)를 따라 샤프트몸체부(110)의 표면에 고르게 유동된다. The lubricating oil introduced through the flow path part 120 is discharged through the lubricating oil discharge part 130 formed through the surface of the shaft body part 110 by the shaft body part 110 which rotates axially. The lubricating oil discharged through the lubricating oil discharge part 130 flows evenly on the surface of the shaft body part 110 along the lubricating oil guide part 140.

윤활유가이드부(140)를 따라 유동되는 윤활유는 피니언샤프트부(100)와 베어링부(200)를 충분하게 윤활 및 냉각하여, 피니언샤프트부(100)가 베어링부(200)와 접촉되면서 마찰에 의해 마모 및 과열되는 것이 방지된다.The lubricating oil flowing along the lubricating oil guide portion 140 sufficiently lubricates and cools the pinion shaft portion 100 and the bearing portion 200, and the pinion shaft portion 100 is brought into contact with the bearing portion 200, resulting in friction. Wear and overheating are prevented.

본 발명의 일 실시예에서 베어링부(200)는 니들베어링(needle bearing)으로 이루어진다. 니들베어링은 바늘과 같이 가늘고 긴 원형형의 롤러를 복수 개로 구비한다. 윤활유배출부(130)를 따라 유동되는 윤활유는 베어링부(200)에서 니들베어링의 롤러 사이의 틈으로 통해 피니언기어(20)로 공급된다. In one embodiment of the present invention, the bearing part 200 is made of a needle bearing. Needle bearings are provided with a plurality of rollers having a long and elongated circular shape, such as needles. The lubricating oil flowing along the lubricating oil discharge part 130 is supplied to the pinion gear 20 through the gap between the rollers of the needle bearing in the bearing part 200.

본 발명의 다른 실시예에서 피니언샤프트부(100a)에서 작동도 상술한 방식으로 이루어진다. 즉, 유로부(120)를 통해 유입된 윤활유는 축회전하는 샤프트몸체부(110a)에 의해, 샤프트몸체부(110a)의 표면으로 관통 형성된 윤활유배출부(130a)를 통해 배출된다. 윤활유배출부(130a)를 통해 배출된 윤활유는 윤활유가이드부(140a)를 따라 샤프트몸체부(110a)의 표면에 고르게 유동된다.In another embodiment of the present invention, the operation in the pinion shaft portion 100a is also made in the manner described above. That is, the lubricating oil introduced through the flow path part 120 is discharged through the lubricating oil discharge part 130a formed through the surface of the shaft body part 110a by the shaft body part 110a that rotates axially. The lubricating oil discharged through the lubricating oil discharge part 130a flows evenly on the surface of the shaft body part 110a along the lubricating oil guide part 140a.

본 발명에 따른 피니언 샤프트 윤활장치에 의하면, 샤프트몸체부(110,110a)에 윤활유가이드부(140,140a)가 형성되어, 윤활유배출부(130,130a)를 통해 배출되는 윤활유가 윤활유가이드부(140,140a)를 따라 샤프트몸체부(110,110a)의 표면에 유동되므로, 윤활과 냉각 성능이 향상될 수 있다.According to the pinion shaft lubrication device according to the present invention, the lubricating oil guide parts 140 and 140a are formed on the shaft body parts 110 and 110a, and the lubricating oil discharged through the lubricating oil discharge parts 130 and 130a is the lubricating oil guide parts 140 and 140a According to the flow to the surface of the shaft body portion (110 110a), lubrication and cooling performance can be improved.

또한 본 발명에 따르면 윤활과 냉각 성능이 개선되어 제품의 내구성이 향상되고, 사용 수명이 연장될 수 있다.In addition, according to the present invention, the lubrication and cooling performance is improved to improve the durability of the product, and the service life can be extended.

본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.The present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, and those skilled in the art to which the art belongs can various modifications and equivalent other embodiments from this. Will understand. Therefore, the technical protection scope of the present invention should be defined by the following claims.

10: 선기어 20: 피니언기어
30: 링기어 100, 100a: 피니언샤프트부
110, 110a: 샤프트몸체부 120, 120a: 유로부
130, 130a: 윤활유배출부 140, 140a: 윤활유가이드부
200: 베어링부10: sun gear 20: pinion gear
30: ring gear 100, 100a: pinion shaft portion
110, 110a: shaft body portion 120, 120a: flow path portion
130, 130a: lubricating oil discharge portion 140, 140a: lubricating oil guide portion
200: bearing

Claims (6)

윤활유를 공급받아 외부로 배출하는 피니언샤프트부; 및
상기 피니언샤프트부의 외측면을 감싸는 베어링부를 포함하고,
상기 피니언샤프트부는,
원통형의 샤프트몸체부;
상기 샤프트몸체부의 내부에 형성되고, 윤활유가 이동되는 유로부;
상기 유로부와 연통되고, 상기 샤프트몸체부의 표면에 상기 베어링부를 향해 개구되게 형성되며, 윤활유가 배출되는 윤활유배출부; 및
상기 샤프트몸체부의 표면에 형성되고, 상기 윤활유배출부를 통해 배출되는 윤활유를 상기 샤프트몸체부의 표면으로 유동되게 가이드하는 윤활유가이드부를 포함하는 것을 특징으로 하는 피니언 샤프트 윤활장치.
A pinion shaft portion that receives lubricant and discharges it to the outside; And
Includes a bearing portion surrounding the outer surface of the pinion shaft portion,
The pinion shaft portion,
A cylindrical shaft body part;
A flow path part formed inside the shaft body part and through which lubricating oil moves;
A lubricating oil discharge part communicating with the flow passage part, being formed to be opened toward the bearing part on the surface of the shaft body part, and lubricating oil is discharged; And
Pinion shaft lubrication device, characterized in that it comprises a lubricating oil guide portion formed on the surface of the shaft body portion, and guides the lubricating oil discharged through the lubricating oil discharge portion to flow to the surface of the shaft body portion.
제1항에 있어서,
상기 윤활유가이드부는 상기 샤프트몸체부의 표면에 나선형으로 형성되는 것을 특징으로 하는 피니언 샤프트 윤활장치.
According to claim 1,
The lubricating oil guide portion pinion shaft lubrication device, characterized in that formed on the surface of the shaft body in a spiral.
제2항에 있어서,
상기 윤활유가이드부는 상기 샤프트몸체부의 길이방향을 따라 오른나선형과 왼나선형이 교차되게 형성되는 것을 특징으로 하는 피니언 샤프트 윤활장치.
According to claim 2,
The lubricating oil guide portion pinion shaft lubrication device, characterized in that the right and left spirals are formed to cross along the longitudinal direction of the shaft body portion.
제1항에 있어서,
상기 윤활유가이드부는 상기 샤프트몸체부의 표면에 격자형으로 형성되는 것을 특징으로 하는 피니언 샤프트 윤활장치.
According to claim 1,
The lubricating oil guide portion pinion shaft lubrication device, characterized in that formed on the surface of the shaft body portion in a lattice shape.
제1항에 있어서,
상기 윤활유가이드부는 단면의 형상이 상기 샤프트몸체부의 표면에 U자형의 홈으로 형성되는 것을 특징으로 하는 피니언 샤프트 윤활장치.
According to claim 1,
The lubricating oil guide portion pinion shaft lubrication device, characterized in that the cross-sectional shape is formed in a U-shaped groove on the surface of the shaft body portion.
제1항에 있어서,
상기 윤활유배출부는 상기 유로부에서 상기 샤프트몸체부의 표면을 향해 최단 경로를 이루도록 형성되는 것을 특징으로 하는 피니언 샤프트 윤활장치.
According to claim 1,
The lubricating oil discharge portion pinion shaft lubrication device, characterized in that formed to form the shortest path from the flow path portion toward the surface of the shaft body portion.
KR1020180156002A 2018-12-06 2018-12-06 Lubricating apparatus for pinion shaft KR102126231B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022145497A1 (en) * 2020-12-28 2022-07-07 주식회사 나라코퍼레이션 Planetary gear device having shafting structure suitable for high-speed rotation

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Publication number Priority date Publication date Assignee Title
JP2007071355A (en) * 2005-09-09 2007-03-22 Nissan Motor Co Ltd Pinion supporting structure for planetary gear
KR20110023274A (en) * 2009-08-31 2011-03-08 현대모비스 주식회사 Mounting apparatus for stabilizer bar of vehicle
KR20180056007A (en) * 2016-11-17 2018-05-28 현대 파워텍 주식회사 Pinion shaft and driving gear therewith

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2007071355A (en) * 2005-09-09 2007-03-22 Nissan Motor Co Ltd Pinion supporting structure for planetary gear
KR20110023274A (en) * 2009-08-31 2011-03-08 현대모비스 주식회사 Mounting apparatus for stabilizer bar of vehicle
KR20180056007A (en) * 2016-11-17 2018-05-28 현대 파워텍 주식회사 Pinion shaft and driving gear therewith

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022145497A1 (en) * 2020-12-28 2022-07-07 주식회사 나라코퍼레이션 Planetary gear device having shafting structure suitable for high-speed rotation

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