KR20010066684A - Seal for hub unit bearing - Google Patents
Seal for hub unit bearing Download PDFInfo
- Publication number
- KR20010066684A KR20010066684A KR1019990068563A KR19990068563A KR20010066684A KR 20010066684 A KR20010066684 A KR 20010066684A KR 1019990068563 A KR1019990068563 A KR 1019990068563A KR 19990068563 A KR19990068563 A KR 19990068563A KR 20010066684 A KR20010066684 A KR 20010066684A
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- KR
- South Korea
- Prior art keywords
- seal
- hub unit
- unit bearing
- iron
- blocking
- Prior art date
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Classifications
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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
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
- F16C33/7883—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section
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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
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
- F16C19/185—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
본 발명은 차량용 허브 유니트 베어링에 관한 것으로서, 특히The present invention relates to a hub unit bearing for a vehicle, in particular
허브 유니트 베어링용 씰에 관한 것이다.A seal for a hub unit bearing.
일반적으로 허브 유니트 베어링은 축 둘레에 설치되어 상기 축의 회전을 지지하는 동시에 축을 프레임에 지지하는 역할을 하고 있다.In general, the hub unit bearing is installed around the shaft to support rotation of the shaft and to support the shaft to the frame.
상기한 허브 유니트 베어링은 도 1에 도시된 바와 같이, 프레임에 고정되는 외륜부(1)와, 상기 외륜부(1)의 내부에 설치되고 그 내부에 축이 삽입되는 내륜부(3)와, 상기 외륜부(1)와 내륜부(3)의 사이에 삽입되어 외륜부(1)와 내륜부(3)를 구름 접촉시키는 복수개의 볼(5)과, 상기 외륜부(1)와 내륜부(3) 사이에 채워져 있는 윤활유에 의한 윤활 작용이 유지되도록 상기 외륜부(1)와 내륜부(3) 사이의 공간을 외부와 차단하는 씰(10)로 구성된 것으로서, 상기 볼(5)의 구름 접촉에 의해 외륜부(1)와 내륜부(3) 사이의 상대 운동이 이루어지면서 축의 회전을 지지하도록 되어 있다.As shown in FIG. 1, the hub unit bearing includes an outer ring portion 1 fixed to a frame, an inner ring portion 3 installed inside the outer ring portion 1 and a shaft inserted therein; A plurality of balls (5) inserted between the outer ring portion (1) and the inner ring portion (3) for rolling contact between the outer ring portion (1) and the inner ring portion (3), and the outer ring portion (1) and the inner ring portion ( 3) consisting of a seal 10 for blocking the space between the outer ring portion 1 and the inner ring portion 3 from the outside so that the lubrication action by the lubricating oil filled therebetween, the rolling contact of the ball (5) The relative movement between the outer ring portion 1 and the inner ring portion 3 is thereby performed to support rotation of the shaft.
특히, 상기 씰(10)은 외륜부(1)와 내륜부(3) 사이에 형성된 공간의 양끝단에 각각 설치되어 있으며, 도 2에 도시된 바와 같이, 상기 외륜부(1)에 밀착되는 링 형태의 외철(11)과, 상기 내륜부(3)에 밀착되고 상기 외철(11)과의 사이에 소정의 공간을 형성하는 링 형태의 내철(13)과, 상기 외철(11)과 내철(13) 사이의 공간에 삽입되어 실링 작용을 수행하는 고무 재질의 씰립(15)으로 구성되어 있다.In particular, the seal 10 is provided at both ends of the space formed between the outer ring portion 1 and the inner ring portion 3, respectively, as shown in Figure 2, the ring in close contact with the outer ring portion (1) The outer convex 11 of the form, the inner convex 13 of the ring form which is in close contact with the inner ring portion 3, and forms a predetermined space between the outer convex 11, the outer convex 11 and the inner convex 13 It is composed of a rubber seal 15 is inserted into the space between) to perform a sealing action.
또한, 상기 씰립(15)은 외철(11)과 밀착되는 부분에 상기 외철(11)이 안착되는 안착홈(15a)이 형성되어 외철(11)에 결합, 지지되도록 되어 있다.In addition, the seal lip 15 has a seating groove 15a in which the outer iron 11 is seated in a portion in close contact with the outer iron 11 so as to be coupled to and supported by the outer iron 11.
또한, 상기 씰립(15)에는 허브 유니트 베어링 내부의 윤활유가 발열에 의해상기 허브 유니트 베어링의 외부로 흘러내리는 것을 방지하도록 씰(10)의 내측 입구 부분(IL)을 막는 윤활유 차단부(15b)가 형성되고, 허브 유니트 베어링 외부의 이물질이 상기 허브 유니트 베어링의 내부로 침투되는 것을 방지하도록 씰(10)의 외측 입구 부분(OL)과 상기 윤활유 차단부(5b) 사이에 이물질 차단부(15c)가 형성되어 있다.In addition, the seal lip 15 includes a lubricating oil blocking part 15b that blocks the inner inlet portion IL of the seal 10 to prevent the lubricating oil inside the hub unit bearing from flowing out of the hub unit bearing by heat generation. The foreign matter blocking portion 15c is formed between the outer inlet portion OL of the seal 10 and the lubricating oil blocking portion 5b so as to prevent foreign matter outside the hub unit bearing from penetrating into the hub unit bearing. Formed.
상기와 같이 구성된 씰(10)은 허브 유니트 베어링의 내부의 윤활 상태를 유지하여 볼(5)의 구름 저항을 최소화함으로써 상기한 허브 유니트 베어링이 정상적으로 작동되도록 하는 기능을 한다.The seal 10 configured as described above functions to maintain the lubrication state of the hub unit bearing to minimize the rolling resistance of the ball 5 so that the hub unit bearing is normally operated.
그러나, 상기와 같은 종래의 허브 유니트 베어링용 씰은, 씰(10)의 외측 입구 부분(OL)을 통해 상기한 외측 입구 부분(OL)과 씰립(15)의 이물질 차단부(15b)로 이루어진 씰(10)의 내부 공간에 외부의 이물질(17)이 침투되어 쌓이고, 이렇게 침투되어 잔류하는 이물질(17)에 의해 씰(10)에 녹이 발생되어 허브 유니트 베어링의 윤활 성능이 저하되는 문제점이 있었다.However, the seal for the conventional hub unit bearing as described above is composed of the outer inlet portion OL and the foreign matter blocking portion 15b of the seal lip 15 through the outer inlet portion OL of the seal 10. External foreign matter 17 penetrates and accumulates in the internal space of (10), and rust is generated in the seal 10 due to the foreign matter 17 thus penetrated, thereby deteriorating the lubricating performance of the hub unit bearing.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 씰의 외철과 내철 사이에 삽입되는 씰립의 형상을 변경하여 상기 씰의 외측 입구 부분을 완전히 차단함으로써 씰의 외측 입구 부분을 통해 상기 씰의 내부 공간으로 이물질이 침투되는 현상이 방지되어 이물질 잔류로 인한 녹 발생이 제거되고, 이에 따라 씰의 내니수성이 향상되어 허브 유니트 베어링의 윤활 성능이 향상되도록 하는 허브 유니트 베어링용 씰을 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, by changing the shape of the seal lip inserted between the outer iron and inner iron of the seal to completely block the outer inlet portion of the seal of the seal through the outer inlet portion of the seal The purpose of this invention is to provide a seal for a hub unit bearing that prevents foreign matter from penetrating into the inner space, thereby eliminating rust caused by foreign matter residue, thereby improving the resistance of the seal to improve the lubrication performance of the hub unit bearing. There is this.
도 1은 일반적인 차량용 허브 유니트 베어링의 구조가 도시된 단면도,1 is a cross-sectional view showing a structure of a general vehicle hub unit bearing,
도 2는 종래 기술에 따른 허브 유니트 베어링용 씰의 구조가 도시된 단면도,2 is a cross-sectional view showing the structure of a seal for a hub unit bearing according to the prior art,
도 3은 본 발명에 따른 허브 유니트 베어링용 씰의 구조가 도시된 단면도이다.3 is a cross-sectional view showing the structure of a seal for a hub unit bearing according to the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
51 : 외철 53 : 내철51: outside iron 53: inside iron
53a : 절곡부 55 : 씰립53a: bend portion 55: seal lip
55a : 이물질 차단부 55b : 윤활유 차단부55a: foreign matter blocking unit 55b: lubricating oil blocking unit
55c : 보조 차단부55c: auxiliary breaker
OL' : 씰의 외측 입구 부분OL ': Outer part of seal
IL' : 씰의 내측 입구 부분IL ': inner inlet of the seal
상기의 목적을 달성하기 위한 본 발명에 따른 허브 유니트 베어링용 씰의 특징은, 허브 유니트 베어링의 외륜부에 밀착되는 외철과, 상기 허브 유니트 베어링의 내륜부에 밀착되고 상기 외철과의 사이에 소정의 공간을 형성하는 내철과, 상기 외철과 내철 사이의 공간에 삽입되어 상기 허브 유니트 베어링 내부의 실링 작용을 수행하는 씰립으로 구성된 허브 유니트 베어링용 씰에 있어서, 상기 허브 유니트 베어링의 외부에 노출된 씰의 외측 입구 부분에는 상기 외철과 내철로 이루어진 씰의 내부 공간이 외부와 완전히 차단되도록 상기한 외측 입구 부분을 막는 차단수단이 설치된 것이다.A feature of the seal for a hub unit bearing according to the present invention for achieving the above object is that the outer ring is in close contact with the outer ring portion of the hub unit bearing, and the outer ring is in close contact with the inner ring portion of the hub unit bearing. A seal for a hub unit bearing composed of an inner steel forming a space and a seal lip inserted into a space between the outer steel and the inner steel to perform a sealing action inside the hub unit bearing, the seal exposed to the outside of the hub unit bearing. The outer inlet portion is provided with a blocking means for blocking the outer inlet portion to completely block the inner space of the seal consisting of the outer iron and inner iron.
또한, 본 발명의 부가적인 특징은, 상기 씰립은 외철에 밀착되게 설치되고, 상기 차단수단은 씰립에서 내철 측으로 돌출 형성되어 그 끝단이 상기 내철과 접촉되는 이물질 차단부인데 있다.In addition, an additional feature of the present invention is that the seal lip is installed in close contact with the outer iron, and the blocking means is formed in the seal lip protruding toward the inner iron side, the end of the foreign matter blocking portion is in contact with the inner iron.
또한, 본 발명의 부가적인 특징은, 상기 내철 중 씰의 외측 입구 부분을 형성하는 끝단에는 상기 씰의 내부 공간 측으로 절곡 형성된 절곡부가 형성되고, 상기 이물질 차단부는 내철의 절곡부에 접촉되도록 형성되는데 있다.In addition, an additional feature of the present invention is that a bent portion bent toward the inner space side of the seal is formed at the end forming the outer inlet portion of the seal of the inner steel, the foreign material blocking portion is formed to be in contact with the bent portion of the inner steel. .
또한, 본 발명의 부가적인 특징은, 상기 씰립의 이물질 차단부는 씰의 외측 방향으로 경사지게 형성되는데 있다.In addition, an additional feature of the present invention is that the foreign matter blocking portion of the seal lip is formed to be inclined in the outward direction of the seal.
상기와 같이 구성된 본 발명은, 씰의 외측 입구 부분이 완전히 차단되어 상기 씰의 외측 입구 부분을 통한 이물질 침투 현상이 방지되므로 씰의 내니수성이 향상되고 허브 유니트 베어링의 윤활 성능이 향상되는 이점이 있다.According to the present invention configured as described above, since the outer inlet portion of the seal is completely blocked to prevent foreign matter from penetrating through the outer inlet portion of the seal, the resistance of the seal is improved and the lubrication performance of the hub unit bearing is improved. .
이하, 본 발명의 실시 예를 첨부한 도면을 참조하여 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
도 3은 본 발명에 따른 허브 유니트 베어링용 씰의 구조가 도시된 단면도이다.3 is a cross-sectional view showing the structure of a seal for a hub unit bearing according to the present invention.
상기한 도 3을 참조하면, 본 발명에 따른 허브 유니트 베어링용 씰은, 허브 유니트 베어링의 외륜부에 밀착되는 링형태의 외철(51)과, 상기 허브 유니트 베어링의 내륜부에 밀착되고 상기 외철(51)과의 사이에 소정의 공간을 형성하는 링형태의 내철(53)과, 상기 외철(51)과 내철(53) 사이의 공간에 삽입되어 상기 허브 유니트 베어링 내부의 실링 작용을 수행하는 고무 재질의 씰립(55)으로 구성되고, 상기 허브 유니트 베어링의 외부에 노출된 씰의 외측 입구 부분(OL')에는 상기 외철(51)과 내철(53)로 이루어진 씰의 내부 공간이 외부와 완전히 차단되도록 상기한 외측 입구 부분(OL')을 막는 차단수단이 설치된다.Referring to FIG. 3, the seal for hub unit bearing according to the present invention includes a ring-shaped outer conduit 51 closely contacted to an outer ring portion of the hub unit bearing, and an outer convex portion closely contacted to an inner ring portion of the hub unit bearing. A rubber-like inner ring 53 forming a predetermined space therebetween, and a rubber material inserted into a space between the outer ring 51 and the inner ring 53 to perform a sealing action inside the hub unit bearing. It consists of a seal lip 55, the outer inlet portion (OL ') of the seal exposed to the outside of the hub unit bearing so that the inner space of the seal consisting of the outer duct 51 and the inner duct 53 is completely blocked from the outside A blocking means for blocking the outer inlet portion OL 'is provided.
여기서, 상기 씰립(55)은 외철(51)에 밀착되게 설치되고, 상기 차단수단은 씰립(55)에서 내철(53) 측으로 돌출 형성되어 그 끝단이 상기 내철(53)과 접촉되는 이물질 차단부(55a)로 되어 있다.Here, the seal lip 55 is installed to be in close contact with the outer iron 51, the blocking means is formed protruding from the seal lip 55 to the inner iron 53 side of the foreign matter blocking portion (end) in contact with the inner iron 53 ( 55a).
또한, 상기 내철(53) 중 씰의 외측 입구 부분(OL')을 형성하는 끝단에는 상기 씰의 내부 공간 측으로 절곡 형성된 절곡부(53a)가 형성되고, 상기 이물질 차단부(55a)는 내철(53)의 절곡부(53a)에 접촉되도록 형성된다.In addition, a bent portion 53a bent toward the inner space side of the seal is formed at an end of the inner convex portion 53 that forms the outer inlet portion OL ′ of the seal, and the foreign material blocking portion 55a is the inner convex portion 53. It is formed to be in contact with the bent portion (53a) of.
상기와 같이 씰립(55)의 이물질 차단부(55a)에 의해 씰의 외측 입구부분(OL')이 막혀 허브 베어링 유니트 외부로부터 상기 씰의 내부 공간이 완전히 차단되면 씰 내부로의 이물질 침투가 제거됨으로써 이물질 잔류로 인한 씰의 녹 발생이 방지되어 상기 씰의 내니수성이 기존에 비해 약 2배 정도 향상되게 된다.As described above, when the outer inlet portion OL 'of the seal is blocked by the foreign matter blocking portion 55a of the seal lip 55 and the internal space of the seal is completely blocked from the outside of the hub bearing unit, foreign matter penetration into the seal is removed. The occurrence of rust of the seal due to foreign matter residue is prevented, so that the water resistance of the seal is improved by about twice.
또한, 상기 씰립(55)의 이물질 차단부(55a)는 허브 유니트 베어링 외부로부터의 이물질 침투를 더욱 효과적으로 방지할 수 있도록 씰의 외측 방향으로 경사지게 형성되어 있다.In addition, the foreign matter blocking portion 55a of the seal lip 55 is formed to be inclined toward the outside of the seal so as to more effectively prevent foreign matter from penetrating from the outside of the hub unit bearing.
또한, 상기 씰립(55)은 외철(51)과 밀착되는 부분에 상기 외철(51)의 끝단 일부가 삽입되는 삽입홈(55d)이 형성됨으로써 외철(51)에 밀착 결합되어 있다.In addition, the seal lip 55 is tightly coupled to the outer convex 51 by forming an insertion groove 55d into which a part of the end of the outer convex 51 is inserted into a portion in close contact with the outer convex 51.
또한, 상기 씰립(55)에는 씰의 내측 입구 부분(IL')을 막도록 상기 내철(53) 측으로 돌출 형성되어 그 끝단이 내철(53)에 접촉되는 윤활유 차단부(55b)가 형성된다.In addition, the seal lip 55 is formed to protrude toward the inner convex portion 53 to block the inner inlet portion IL 'of the seal, and a lubricating oil blocking portion 55b having an end thereof contacting the inner convex portion 53 is formed.
상기와 같이 씰립(55)에 형성된 윤활유 차단부(55b)는 허브 유니트 베어링 내부의 윤활유가 발열에 의해 상기 허브 유니트 베어링의 외부로 흘러내리는 것을 방지함으로써 허브 유니트 베어링 내부의 윤활 상태를 원활하게 유지하여 상기 허브 유니트 베어링 내부의 구름 저항을 최소화시키는 기능을 하고 있다.As described above, the lubricating oil blocking part 55b formed on the seal lip 55 prevents the lubricating oil inside the hub unit bearing from flowing out of the hub unit bearing by heat generation, thereby smoothly maintaining the lubrication state inside the hub unit bearing. It functions to minimize rolling resistance inside the hub unit bearing.
또한, 상기 씰립(55) 중 상기 윤활유 차단부(55b)와 이물질 차단부(55a) 사이에는 그 끝단이 내철(53)과 접촉되도록 상기 내철(53)을 향해 돌출 형성된 보조 차단부(55c)가 형성되며, 상기 보조 차단부(55c)는 윤활유 차단부(55b)와 이물질 차단부(55a) 사이에 위치되어 3중막을 형성함으로써 씰의 실링 기능이 강화되도록 보조하는 역할을 한다.In addition, between the lubricating oil blocking portion 55b and the foreign matter blocking portion 55a of the seal lip 55, an auxiliary blocking portion 55c protruding toward the inner steel 53 is provided so that an end thereof contacts the inner steel 53. The auxiliary blocking part 55c is positioned between the lubricating oil blocking part 55b and the foreign material blocking part 55a to form a triple film to serve to enhance the sealing function of the seal.
한편, 상기에서 설명되지 않은 다른 실시 예에 의하면, 상기 씰립(55)을 외철(51)에 밀착시키는 대신 상기 내철(53)에 밀착되게 설치하고, 상기 이물질 차단부(55a)는 그 끝단이 외철(51)에 접촉되도록 상기 외철(51)을 향해 돌출 형성시킬 수도 있다.On the other hand, according to another embodiment, which is not described above, the seal lip 55 is installed in close contact with the inner iron 53, instead of being in close contact with the outer iron 51, the foreign material blocking portion 55a end of the outer iron It may be formed to protrude toward the outer convex 51 so as to contact the 51.
상기와 같이 구성되고 동작되는 본 발명에 따른 허브 유니트 베어링용 씰은, 외철(51)과 내철(53) 사이에 삽입되는 씰립(55)의 형상을 변경하여 씰의 외측 입구 부분(OL')을 완전히 차단함으로써 상기 씰의 외측 입구 부분(OL')을 통해 씰의 내부 공간으로 이물질이 침투되는 현상이 방지되어 이물질 잔류로 인한 녹 발생이 제거되고, 이에 따라 씰의 내니수성이 향상되어 허브 유니트 베어링의 윤활 성능이 향상되는 이점이 있다.The seal for the hub unit bearing according to the present invention constructed and operated as described above changes the shape of the seal lip 55 inserted between the outer convex 51 and the inner convex 53 to open the outer inlet portion OL 'of the seal. By completely blocking, the phenomenon that foreign matter penetrates into the inner space of the seal through the outer inlet portion OL 'of the seal is prevented, so that rust generation due to the residue of foreign matter is eliminated, and thus the resistance to water of the seal is improved so that the hub unit bearing There is an advantage that the lubrication performance of the is improved.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990068563A KR20010066684A (en) | 1999-12-31 | 1999-12-31 | Seal for hub unit bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990068563A KR20010066684A (en) | 1999-12-31 | 1999-12-31 | Seal for hub unit bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20010066684A true KR20010066684A (en) | 2001-07-11 |
Family
ID=19635645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990068563A KR20010066684A (en) | 1999-12-31 | 1999-12-31 | Seal for hub unit bearing |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20010066684A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100709812B1 (en) * | 2005-02-28 | 2007-04-23 | 주식회사 일진베어링 | Oil Sealing Apparatus of Wheel Bearing |
| US10302133B2 (en) | 2015-08-07 | 2019-05-28 | Schaeffler Technologies AG & Co. KG | Sealing structure for bearing |
| KR102055278B1 (en) | 2018-06-29 | 2019-12-12 | 셰플러코리아(유) | A Seal For Rolling Bearing |
-
1999
- 1999-12-31 KR KR1019990068563A patent/KR20010066684A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100709812B1 (en) * | 2005-02-28 | 2007-04-23 | 주식회사 일진베어링 | Oil Sealing Apparatus of Wheel Bearing |
| US10302133B2 (en) | 2015-08-07 | 2019-05-28 | Schaeffler Technologies AG & Co. KG | Sealing structure for bearing |
| KR102055278B1 (en) | 2018-06-29 | 2019-12-12 | 셰플러코리아(유) | A Seal For Rolling Bearing |
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