KR102399107B1 - Bonded Piston Seal For High Pressure - Google Patents

Bonded Piston Seal For High Pressure Download PDF

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Publication number
KR102399107B1
KR102399107B1 KR1020200151804A KR20200151804A KR102399107B1 KR 102399107 B1 KR102399107 B1 KR 102399107B1 KR 1020200151804 A KR1020200151804 A KR 1020200151804A KR 20200151804 A KR20200151804 A KR 20200151804A KR 102399107 B1 KR102399107 B1 KR 102399107B1
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KR
South Korea
Prior art keywords
movable member
thickness
seal
inclined portion
height
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KR1020200151804A
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Korean (ko)
Inventor
허용수
오명훈
이재석
김원빈
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한국에스케이에프씰 주식회사
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Priority to KR1020200151804A priority Critical patent/KR102399107B1/en
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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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
    • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
    • F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
    • F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/02—Fluid-pressure mechanisms
    • F16D2125/08—Seals, e.g. piston seals

Abstract

A bonded piston deal for high pressure according to the present invention is a seal for sealing a gap between a ring-shaped movable member, which is inserted into a movable member insertion groove opened downward from a ring-shaped fixed member to move in a vertical direction, and the fixed member, comprising: an angled C-shape groove having an upper end of the movable member inserted thereinto and opened downward; an upper surface part and a side surface part formed along the upper end and both side surfaces of the movable member, and having constant-thickness sections respectively; and a fixed member contact part formed along an edge formed by the upper surface part and the side surface part. The fixed member contact part consists of: an upper surface inclination part inclined upward from an edge of the upper surface part; a first side surface inclination part inclined in such a shape that thickness increases from the side surface part to the upper side; a second side surface inclination part inclined in such a shape that thickness decreases from the first side surface inclination part to the upper side; a contact reference point having the first and the second side surface inclination part meeting each other thereon and including the shape of a curved surface; and an extension part formed at a point where the second side surface inclination part and the upper surface inclination part intersect with each other, and protrude upward. The curvature radius of the portion of transitioning into the constant-thickness section of the first side surface inclination part and the side surface part is equal to or greater than 3 mm, and the height of the contact reference point is lower than the height of the upper surface of the upper surface part. Therefore, provided is a bonded piston seal, which can be installed without processing a separate groove on a movable member.

Description

고압용 본디드 피스톤 씰 {Bonded Piston Seal For High Pressure}Bonded Piston Seal For High Pressure}

본 발명은 고압용 본디드 피스톤 씰에 관한 것으로, 보다 상세하게는 차량의 동력전달계에 사용되며 고압을 견딜 수 있으며 낮은 마찰력을 나타내는 고압용 양방향 본디드 피스톤 씰에 관한 것이다. The present invention relates to a bonded piston seal for high pressure, and more particularly, to a bidirectional bonded piston seal for high pressure used in a power transmission system of a vehicle, capable of withstanding high pressure and exhibiting low frictional force.

자동차의 동력전달계통에는 유압을 사용하는 경우가 많고, 이와 같은 유압의 적용에 따라 각종 부품간 씰링이 필요하다.In many cases, hydraulic pressure is used in the power transmission system of an automobile, and sealing between various parts is required according to the application of such hydraulic pressure.

고정부재인 상하 하우징간에 삽입되는 통상의 O링 형태의 씰과는 달리, 동력전달계통 유압장치의 경우에는 하우징과 같은 고정부재와 피스톤이나 클러치 디스크과 같은 가동부재 사이의 씰링이 가능한 씰이 요구되며, 이와 같은 씰은 고압에 노출되는 경우가 많다. Unlike the normal O-ring type seal inserted between the upper and lower housings, which are fixed members, in the case of a hydraulic power transmission system, a seal capable of sealing between a fixed member such as a housing and a movable member such as a piston or a clutch disk is required. Such seals are often exposed to high pressure.

종래의 기술을 나타낸 도 1,2에 의하면 환형 고정부재(10)의 둘레를 따라 환형으로 가공된 가동부재 삽입 홈(11)에 환형 가동부재(20)가 삽입되어 있다. 가동부재(20)는 가동부재 삽입 홈(11)내에서 상하로 가동된다. 가동부재(20) 단부에는 씰 삽입홈(22)이 구비되며, 씰 삽입홈(22)에는 씰(30)의 결합볼록부(31)가 끼워지며, 고정부재(10)의 가동부재 삽입홈(11) 벽면에는 V자형으로 돌출된 씰(30)의 립(32, LIP)이 접촉된다. 1 and 2 showing the prior art, the annular movable member 20 is inserted into the movable member insertion groove 11 processed into an annular shape along the circumference of the annular fixing member 10 . The movable member 20 is moved up and down in the movable member insertion groove 11 . A seal insertion groove 22 is provided at the end of the movable member 20, the coupling convex portion 31 of the seal 30 is fitted into the seal insertion groove 22, and the movable member insertion groove of the fixed member 10 ( 11) The lip 32, LIP of the seal 30 protruding in a V-shape is in contact with the wall surface.

고정부재(10)의 가동부재 삽입 홈(11)과 씰(30)의 V자형 립(32)에 의해 형성되는 상측 공간에 오일이 충진되어 가동부재(20)가 상하로 작동되게 된다. Oil is filled in the upper space formed by the movable member insertion groove 11 of the fixed member 10 and the V-shaped lip 32 of the seal 30 so that the movable member 20 is operated up and down.

또한 가동부재 삽입 홈(11)에 끼워지기 전 립(32)는 고정부재 측으로 많이 돌출되며, 가동부재 삽입 홈(11)에 끼워질 때 발생하는 변형에 의해 초기 씰링 성능이 결정되게 된다. In addition, before being fitted into the movable member insertion groove 11 , the lip 32 protrudes a lot toward the fixing member, and the initial sealing performance is determined by the deformation that occurs when the lip 32 is fitted into the movable member insertion groove 11 .

이와 같은 경우, 가동부재(20)의 상하 이동에 따라 씰 삽입홈(22)에 끼워진 결합볼록부(31)가 이탈되거나 파손되기도 하며, V자형 립(32)에 작용하는 유압 및 마찰에 의해 립(32)이 파손되기도 하는 문제점이 있다. In this case, the coupling convex part 31 fitted in the seal insertion groove 22 is separated or damaged according to the vertical movement of the movable member 20 , and the lip is caused by hydraulic pressure and friction acting on the V-shaped lip 32 . There is a problem that (32) is also damaged.

또한, 가동부재(20)에 별도로 씰 삽입홈(22)을 가공하여야 하므로 가동부재의 가공 등이 보다 복잡하게 되며, 이에 따른 시간과 비용이 증가하는 문제점이 있었다. In addition, since it is necessary to separately process the seal insertion groove 22 in the movable member 20, the processing of the movable member becomes more complicated, and there is a problem in that time and cost increase accordingly.

대한민국 등록특허 10-1908300호에는 고정부재(클러치 하우징) 내를 상하운동하는 가동부재(클러치 피스톤)에 접착되는 본디드 피스톤 씰(Bonded Piston Seal, 이하 'BPS'라 함.)이 게시되어 있다. 그러나 이와 같은 BPS는 금속제 가동부재의 표면에 접착되어 고정되므로 사용중 접착된 부위가 분리되는 등 고압이 작용하는 가동부재에 적용하기 곤란한 문제점이 있었다. Korean Patent Registration No. 10-1908300 discloses a Bonded Piston Seal (hereinafter referred to as 'BPS') that is adhered to a movable member (clutch piston) that moves up and down in a fixed member (clutch housing). However, since such BPS is fixed by being attached to the surface of the movable member made of metal, there is a problem in that it is difficult to apply the BPS to the movable member under high pressure, such as separation during use.

KR 10-1208885 B1, 2012.12.05., 도 6KR 10-1208885 B1, 2012.12.05., Fig. 6 KR 10-1908300 B1, 2018,12.19., 도 1KR 10-1908300 B1, 2018, 12.19., Fig. 1

본 발명은, 자동차의 동력전달계통에 사용되는 씰로서, 가동부재에 별도의 홈을 가공하지 않아도 설치가능하며, 가동부재에 대한 접착력이 우수하고, 가동부재와 고정부재 사이를 보다 확실하게 씰링할 수 있으며, 또한 씰이 찢어지거나 파손되는 것이 방지되며 마찰저항이 감소되며 내구성이 뛰어난 BPS를 제공하는 것을 그 목적으로 한다. The present invention is a seal used in the power transmission system of a vehicle, which can be installed without machining a separate groove in the movable member, has excellent adhesion to the movable member, and can seal more reliably between the movable member and the fixed member. The purpose of this is to provide a BPS with excellent durability, which prevents the seal from tearing or breaking, and reduces frictional resistance.

본 발명에 따른 고압용 BPS는, BPS for high pressure according to the present invention,

환형 고정부재에서 하측을 향해 개방된 가동부재 삽입홈에 끼워져 상하 운동을 하는 환형 가동부재와 상기 고정부재 사이를 씰링하는 씰로서, A seal for sealing between an annular movable member and the fixed member that is inserted into a movable member insertion groove opened downward in the annular fixing member and moves up and down,

가동부재의 상측 단부가 삽입되며 하측으로 개방된 'ㄷ'형 홈과,A 'C'-shaped groove into which the upper end of the movable member is inserted and opened downward,

상기 가동부재 상측 단부의 상면과 양 측면을 따라 형성되며 각각 일정 두께 구간을 갖는 상면부과 측면부와,an upper surface portion and a side portion formed along the upper surface and both sides of the upper end of the movable member and each having a predetermined thickness section;

상기 상면부와 측면부가 이루는 모서리를 따라 형성되는 고정부재 접촉부로 이루어지며;a fixing member contact portion formed along a corner formed by the upper surface portion and the side surface portion;

상기 고정부재 접촉부는,The fixing member contact portion,

상면부의 가장자리에서 상측을 향해 경사진 상면 경사부와,an upper inclined portion inclined toward the upper side from the edge of the upper surface portion;

측면부에서 상측으로 갈수록 두께가 증가하는 형태로 경사진 제 1 측면 경사부와,A first side inclined portion inclined in the form of increasing thickness from the side portion toward the upper side;

상기 제 1 측면경사부로부터 상측으로 갈수록 두께가 감소하는 형태로 경사진 제 2 측면 경사부와,a second side inclined portion inclined in a form in which the thickness decreases from the first side inclined portion toward the upper side;

상기 제 1, 2 측면 경사부가 만나며 곡면 형상을 구비한 접촉기준점과,A contact reference point having a curved shape where the first and second side slopes meet;

상기 제 2 측면 경사부와 상기 상면 경사부가 교차하는 지점에 형성되어 상측을 향해 돌출된 연장부로 이루어지고;formed at a point where the second side inclined portion and the upper inclined portion intersect and is formed of an extended portion protruding upward;

상기 제 1 측면 경사부와 측면부의 일정두께구간으로 이행하는 부위의 곡률반경은 3mm이상이며,The radius of curvature of the portion transitioning to a predetermined thickness section of the first side inclined portion and the side portion is 3 mm or more,

상기 접촉기준점의 높이는 상면부의 상측 표면의 높이보다 낮은 것을 특징으로 한다. The height of the reference point of contact is lower than the height of the upper surface of the upper surface part.

상면부의 일정 두께 구간의 두께는 측면부의 일정두께 구간의 두께보다 두꺼운 것이 바람직하다.It is preferable that the thickness of the predetermined thickness section of the upper surface portion is thicker than the thickness of the constant thickness section of the side portion.

제 1 측면 경사부의 길이가 제 2 측면 경사부의 길이보다 긴 것이 바람직하다.Preferably, the length of the first side slope is longer than the length of the second side slope.

제 2 측면 경사부와 연장부가 만나는 지점의 높이는 상면 경사부와 연장부가 만나는 지점의 높이보다 낮은 것이 바람직하다.It is preferable that the height of the point where the second side inclined part and the extended part meet is lower than the height of the point where the upper surface inclined part and the extended part meet.

제 1 측면 경사부의 길이보다 측면부의 일정두께 구간의 길이가 긴 것이 바람직하다. It is preferable that the length of the predetermined thickness section of the side portion is longer than the length of the first side inclined portion.

본 발명에 의하면 자동차 동력전달계통의 가동부재에 별도의 홈을 가공하지 않아도 가동부재의 씰의 설치가 가능하며, 가동부재와 씰의 접착력이 우수하고, 가동부재와 고정부재 사이를 보다 확실하게 씰링할 수 있으며, 또한 씰이 찢어지거나 파손되는 것이 방지되며 마찰저항이 낮은 내구성이 뛰어난 씰을 얻을 수 있는 효과가 있다. According to the present invention, it is possible to install the seal of the movable member without machining a separate groove in the movable member of the vehicle power transmission system, the adhesive force between the movable member and the seal is excellent, and the sealing between the movable member and the fixed member is more reliably Also, it prevents the seal from tearing or breaking, and has the effect of obtaining a durable seal with low frictional resistance.

또한, 본 발명은 중대형 차량 또는 고성능 차량에서 사용되는 습식 DCT(Dual Clutch Transmission)와 같이 40 bar 이상의 고압에서도 사용이 가능한 효과가 있다. In addition, the present invention has an effect that can be used even at a high pressure of 40 bar or more, such as a wet DCT (Dual Clutch Transmission) used in a medium-large vehicle or a high-performance vehicle.

도 1,2는 종래 고정부재/가동부재/씰의 형태를 나타낸 1/2 단면 사시도 및 부분확대도.
도 3은 본 발명 일 실시예 씰의 적용형태를 나타낸 1/2 단면의 부분확대도.
도 4는 도 3의 고정부재 접촉부를 확대한 도.1 and 2 are a 1/2 sectional perspective view and a partially enlarged view showing the shape of a conventional fixed member / movable member / seal.
Figure 3 is a partial enlarged view of the half section showing the application form of the seal according to an embodiment of the present invention.
Figure 4 is an enlarged view of the fixing member contact portion of Figure 3;

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다. 참고로, 본 발명을 설명하는 데 참조하는 도면에 도시된 구성요소의 크기, 선의 두께 등은 이해의 편의상 다소 과장되게 표현되어 있을 수 있다. 또, 본 발명의 설명에 사용되는 용어들은 본 발명에서의 기능을 고려하여 정의한 것이므로 사용자, 운용자 의도, 관례 등에 따라 달라질 수 있다. 따라서, 이 용어에 대한 정의는 본 명세서의 전반에 걸친 내용을 토대로 내리는 것이 마땅하겠다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, sizes of components, thicknesses of lines, etc. shown in the drawings referenced to describe the present invention may be expressed somewhat exaggeratedly for convenience of understanding. In addition, the terms used in the description of the present invention are defined in consideration of the functions in the present invention, and thus may vary according to user, operator intention, custom, and the like. Therefore, the definition of this term should be given based on the content throughout the present specification.

본 실시예에서의 씰(30)은 도 1,2의 종래 기술의 씰 대신 사용되는 것으로, 하측으로 개방된 형태의 가동부재 삽입홈(11)을 구비한 환형 고정부재(10)에 환형 가동부재(20)가 삽입되어 이루어진 고정부재(10)과 가동부재(20)의 사이를 씰링하는 것이다. The seal 30 in this embodiment is used instead of the seal of the prior art of FIGS. 1 and 2, and is an annular movable member in the annular fixed member 10 having the movable member insertion groove 11 in the form of an open downward. (20) is to seal between the fixed member (10) and the movable member (20) is inserted.

씰(30)은 탄성 재질, 예를 들어 고무로 제조된다.The seal 30 is made of an elastic material, for example, rubber.

씰(30)은, 하측으로 개방된 'ㄷ'형 홈(30-1)을 구비하고 있고, 상기 'ㄷ'형 홈(30-1)에 가동부재(20)의 말단이 끼워지며. 상기 'ㄷ'형 홈(30-1)에 도포된 접착제에 의해 가동부재(20)와 씰(30)은 고정되게 된다.The seal 30 is provided with a 'c'-shaped groove 30-1 open downward, and the end of the movable member 20 is fitted into the 'c'-shaped groove 30-1. The movable member 20 and the seal 30 are fixed by the adhesive applied to the 'C'-shaped groove 30-1.

씰(30)은 가동부재의 상면과 양측면을 따라 외면을 이루며 각각 일정두께 구간을 갖는 상면부(30-2)와 측면부(30-3)가 형성되어 있다. The seal 30 forms an outer surface along the upper surface and both sides of the movable member, and an upper surface portion 30-2 and a side portion 30-3 each having a predetermined thickness section are formed.

상면부(30-2)와 측면부(30-3)가 이루는 모서리에는 고정부재 접촉부가 형성되어 있다. A fixing member contact portion is formed at an edge formed by the upper surface portion 30-2 and the side surface portion 30-3.

고정부재 접촉부는, 상면부(30-2)의 가장자리에서 상측을 향해 경사진 상면 경사부(30-4)와, 측면부(30-3)에서 상측으로 갈수록 두께가 증가하는 형태로 경사진 제 1 측면 경사부(30-5)와, 상기 제 1 측면경사부(30-5)로부터 상측으로 갈수록 두께가 감소하는 형태로 경사진 제 2 측면 경사부(30-6)와, 상기 제 1, 2 측면 경사부(30-5,6)가 서로 만나는 지점으로 곡면 형상을 구비한 접촉기준점(30-7)과, 상기 제 2 측면 경사부(30-6)와 상기 상면 경사부(30-4) 사이에 형성되어 상측을 향해 돌출된 연장부(30-8)로 이루어져 있다. The fixing member contact portion includes an upper inclined portion 30-4 that is inclined upward from the edge of the upper surface portion 30-2, and a first inclined portion that increases in thickness from the side portion 30-3 toward the upper side. The side inclined portion 30-5, the second side inclined portion 30-6 inclined in a form of decreasing thickness from the first side inclined portion 30-5 toward the upper side, and the first and second A contact reference point 30-7 having a curved shape as a point at which the side inclined portions 30-5 and 6 meet each other, the second side inclined portion 30-6 and the upper inclined portion 30-4 It is formed between and consists of an extension (30-8) protruding toward the upper side.

상기 제 1 측면 경사부(30-5)로부터 측면부(30-3)의 일정두께구간으로 이행하는 부위의 곡률반경(R)을 3mm이상으로 하면 접촉기준점(30-7) 부근이 가압되어 변형되는 씰에 의해 발생하는 응력이 이행되는 부위에 집중되는 것을 완화할 수 있다.When the radius of curvature (R) of the portion transitioning from the first side inclined portion 30-5 to the predetermined thickness section of the side portion 30-3 is 3 mm or more, the contact reference point 30-7 vicinity is pressed and deformed. It is possible to relieve the stress generated by the seal from being concentrated in the area to which it is transferred.

그리고, 상기 접촉기준점(30-7)의 높이는 상면부(30-2)의 상측 표면의 높이보다 낮은 것이 바람직하다. 이는 접촉기준점(30-7)을 중심으로 측면이 가압되었을 때, 이러한 가압에 의해 모우멘트가 발생하여 씰(30)이 찢어지거나 가동부재(20)로부터 박리되는 것을 방지하기 위한 것이다. And, the height of the contact reference point (30-7) is preferably lower than the height of the upper surface of the upper surface portion (30-2). This is to prevent the seal 30 from tearing or peeling from the movable member 20 due to a moment generated by the pressing when the side surface is pressed around the contact reference point 30-7.

또한 제 1 측면 경사부(30-5)의 길이가 제 2 측면 경사부(30-6)의 길이보다 긴 것이 바람직한데, 가동부재(20)에 접촉된 측의 변형이 감소하도록 하여 씰의 급격한 변형을 방지할 수 있게 하는 것이다. In addition, it is preferable that the length of the first side inclined portion 30-5 is longer than the length of the second side inclined portion 30-6, so that the deformation of the side in contact with the movable member 20 is reduced, so that the abrupt seal to prevent deformation.

상면부(30-2)의 일정두께 구간의 두께는 측면부(30-3)의 일정두께 구간의 두께보다 두껍게 하는 것이 바람직한데, 이는 앞서 설명한 접촉기준점의 높이를 확보하기 위해 상면부(30-2)의 두께를 두껍게 하고, 경량화를 위해 측면부(30-3)의 두께를 얇게 하는 것이 바람직하기 때문이다. The thickness of the predetermined thickness section of the upper surface portion 30-2 is preferably thicker than the thickness of the predetermined thickness section of the side portion 30-3, which is the upper surface portion 30-2 in order to secure the height of the contact reference point described above. ) because it is preferable to thicken the thickness and to thin the thickness of the side portion 30-3 for weight reduction.

또한, 제 2 측면 경사부(30-6)와 연장부(30-8)가 만나는 지점의 높이는 상면 경사부(30-4)와 연장부(30-8)가 만나는 지점의 높이보다 낮게 형성되는 데, 연장부(30-8) 및 상면 경사부(30-4)에 작용하는 유압에 의해 연장부(30-8)가 제 2 측면 경사부(30-6) 측으로 변형되는 것을 용이하게 해준다. In addition, the height of the point where the second side inclined part 30-6 and the extension part 30-8 meet is lower than the height of the point where the upper surface inclined part 30-4 and the extension part 30-8 meet However, it facilitates the transformation of the extension part 30-8 toward the second side inclined part 30-6 by the hydraulic pressure acting on the extension part 30-8 and the upper surface inclined part 30-4.

본 발명에 따르면, 상면 경사부(30-4)와 연장부(30-8)의 높이로 결정되는 립의 길이가 종래의 기술에 비해 낮게 하는 것이 가능하며, 또한 고정부재 측으로 돌출되는 립의 간극 역시 종래의 기술에 비해 좁게 하는 것이 가능하여 립이 변형되는 양을 적게 하면서 마찰력을 감소시킬 수 있는 효과를 얻을 수 있게 된다. According to the present invention, it is possible to make the length of the lip determined by the height of the upper inclined portion 30-4 and the extension portion 30-8 lower than that of the prior art, and also the gap between the lip protruding toward the fixing member. It is also possible to narrow the lip compared to the prior art, so that it is possible to obtain the effect of reducing the frictional force while reducing the amount of deformation of the lip.

이상, 본 발명의 구체적인 실시예를 설명하였으나, 본 발명은 이 명세서에 [0033] 개시된 실시예 및 첨부된 도면에 의하여 한정되지 않으며 본 발명의 기술적 사상을 벗어나지 않는 범위 이내에서 당업자에 의하여 다양하게 변형될 수 있다.In the above, specific embodiments of the present invention have been described, but the present invention is not limited by the embodiments disclosed in this specification and the accompanying drawings, and various modifications are made by those skilled in the art without departing from the technical spirit of the present invention. can be

특히, 본 발명의 고압용 양방향 BPS는 고압 환경인 습식 DCT의 피스톤 타입 씰에 적용가능할 뿐만 아니라, CSC(Concentric Slave Cylinder)와 같은 유사한 분야에도 적용이 가능할 것이다. In particular, the bidirectional BPS for high pressure of the present invention may be applicable not only to the piston type seal of the wet DCT, which is a high pressure environment, but also to similar fields such as CSC (Concentric Slave Cylinder).

10 : 고정부재 11 : 가동부재 삽입홈 20 : 가동부재 22 : 씰 삽입홈
30 : 씰 30-1 : 'ㄷ'형 홈 30-2 : 상면부 30-3 : 측면부
30-4 : 상면 경사부 30-5 : 제 1 측면 경사부 30-6 : 제 2 측면 경사부
30-7: 접촉기준점 30-8 : 연장부10: fixed member 11: movable member insertion groove 20: movable member 22: seal insertion groove
30: Seal 30-1: 'C'-shaped groove 30-2: Top part 30-3: Side part
30-4: upper surface inclined part 30-5: first side inclined part 30-6: second side inclined part
30-7: contact reference point 30-8: extension

Claims (5)

환형 고정부재에서 하측을 향해 개방된 가동부재 삽입홈에 끼워져 상하 운동을 하는 환형 가동부재와 상기 고정부재 사이를 씰링하는 씰로서,

가동부재의 상측 단부가 삽입되며 하측으로 개방된 'ㄷ'형 홈과,
상기 가동부재 상측 단부의 상면과 양 측면을 따라 형성되며 각각 일정 두께 구간을 갖는 상면부과 측면부와,
상기 상면부와 측면부가 이루는 모서리를 따라 형성되는 고정부재 접촉부로 이루어지며;

상기 고정부재 접촉부는,
상면부의 가장자리에서 상측을 향해 경사진 상면 경사부와,
측면부에서 상측으로 갈수록 두께가 증가하는 형태로 경사진 제 1 측면 경사부와,
상기 제 1 측면경사부로부터 상측으로 갈수록 두께가 감소하는 형태로 경사진 제 2 측면 경사부와,
상기 제 1, 2 측면 경사부가 만나며 곡면 형상을 구비한 접촉기준점과,
상기 제 2 측면 경사부와 상기 상면 경사부가 교차하는 지점에 형성되어 상측을 향해 돌출된 연장부로 이루어지고;

상기 제 1 측면 경사부와 측면부의 일정두께구간으로 이행하는 부위의 곡률반경은 3mm이상이며,
상기 접촉기준점의 높이는 상면부의 상측 표면의 높이보다 낮은 것을 특징으로 하는 고압용 본디드 피스톤 씰.
As a seal for sealing between the annular movable member and the fixed member that is inserted into the movable member insertion groove opened downward in the annular fixing member and moves up and down,

A 'C'-shaped groove into which the upper end of the movable member is inserted and opened downward;
an upper surface portion and a side portion formed along the upper surface and both sides of the upper end of the movable member and each having a predetermined thickness section;
a fixing member contact portion formed along a corner formed by the upper surface portion and the side surface portion;

The fixing member contact portion,
an upper inclined portion inclined toward the upper side from the edge of the upper surface portion;
A first side inclined portion inclined in the form of increasing thickness from the side portion toward the upper side;
a second side inclined portion inclined in a form in which the thickness decreases from the first side inclined portion toward the upper side;
A contact reference point having a curved shape where the first and second side slopes meet;
It is formed at a point where the second side inclined portion and the upper inclined portion intersect and consists of an extension portion protruding upward;

The radius of curvature of the portion transitioning to a predetermined thickness section of the first side inclined portion and the side portion is 3 mm or more,
The height of the contact reference point is a high-pressure bonded piston seal, characterized in that lower than the height of the upper surface of the upper surface portion.
 제 1 항에 있어서,
상면부의 일정 두께 구간의 두께는 측면부의 일정두께 구간의 두께보다 두꺼운 것을 특징으로 하는 고압용 본디드 피스톤 씰.
The method of claim 1,
A high-pressure bonded piston seal, characterized in that the thickness of the section with a certain thickness of the upper surface is thicker than the thickness of the section with a certain thickness of the side section.
 제 1 항에 있어서,
제 1 측면 경사부의 길이가 제 2 측면 경사부의 길이보다 긴 것을 특징으로 하는 고압용 본디드 피스톤 씰.
The method of claim 1,
Bonded piston seal for high pressure, characterized in that the length of the first side slope is longer than the length of the second side slope.
 제 1 항에 있어서,
제 2 측면 경사부와 연장부가 만나는 지점의 높이는 상면 경사부와 연장부가 만나는 지점의 높이보다 낮은 것을 특징으로 하는 고압용 본디드 피스톤 씰.
The method of claim 1,
A high pressure bonded piston seal, characterized in that the height of the point where the second side inclined portion and the extended portion meet is lower than the height of the point where the upper surface inclined portion and the extended portion meet.
 제 1 항에 있어서,
제 1 측면 경사부의 길이보다 측면부의 일정두께 구간의 길이가 긴 것을 특징으로 하는 고압용 본디드 피스톤 씰.The method of claim 1,
Bonded piston seal for high pressure, characterized in that the length of the predetermined thickness section of the side portion is longer than the length of the first side inclined portion.
KR1020200151804A 2020-11-13 2020-11-13 Bonded Piston Seal For High Pressure KR102399107B1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090250881A1 (en) * 2005-03-22 2009-10-08 Kalsi Engineering, Inc. Low torque hydrodynamic lip geometry for bi-directional rotation seals
KR101208885B1 (en) 2010-04-30 2012-12-05 신국환 Rubber Ring for Clutch Piston of Multi-plate Clutch System of Auto Transmission
JP2013238275A (en) * 2012-05-15 2013-11-28 Nok Corp Sealing device
KR101431187B1 (en) * 2010-01-28 2014-08-18 트렐레보르크 씰링 솔루션즈 저머니 게엠베하 Rotary seal arrangement
US20140291936A1 (en) * 2013-03-29 2014-10-02 A.W. Chesterton Company Matrix split rotary seal
KR101908300B1 (en) 2016-11-15 2018-12-19 평화오일씰공업 주식회사 Bonded piston seal and clutch unit with the same
KR20200008108A (en) * 2017-03-16 2020-01-23 트렐레보르크 씰링 솔루션즈 저머니 게엠베하 Sealing assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090250881A1 (en) * 2005-03-22 2009-10-08 Kalsi Engineering, Inc. Low torque hydrodynamic lip geometry for bi-directional rotation seals
KR101431187B1 (en) * 2010-01-28 2014-08-18 트렐레보르크 씰링 솔루션즈 저머니 게엠베하 Rotary seal arrangement
KR101208885B1 (en) 2010-04-30 2012-12-05 신국환 Rubber Ring for Clutch Piston of Multi-plate Clutch System of Auto Transmission
JP2013238275A (en) * 2012-05-15 2013-11-28 Nok Corp Sealing device
US20140291936A1 (en) * 2013-03-29 2014-10-02 A.W. Chesterton Company Matrix split rotary seal
KR101908300B1 (en) 2016-11-15 2018-12-19 평화오일씰공업 주식회사 Bonded piston seal and clutch unit with the same
KR20200008108A (en) * 2017-03-16 2020-01-23 트렐레보르크 씰링 솔루션즈 저머니 게엠베하 Sealing assembly

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