KR20040024705A - Body valve use in a shock absorber - Google Patents

Body valve use in a shock absorber Download PDF

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Publication number
KR20040024705A
KR20040024705A KR1020020056132A KR20020056132A KR20040024705A KR 20040024705 A KR20040024705 A KR 20040024705A KR 1020020056132 A KR1020020056132 A KR 1020020056132A KR 20020056132 A KR20020056132 A KR 20020056132A KR 20040024705 A KR20040024705 A KR 20040024705A
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KR
South Korea
Prior art keywords
valve
suction valve
shock absorber
compression
passage
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KR1020020056132A
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Korean (ko)
Inventor
신성호
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주식회사 만도
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Priority to KR1020020056132A priority Critical patent/KR20040024705A/en
Publication of KR20040024705A publication Critical patent/KR20040024705A/en

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Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/44—Vibration noise suppression
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/02—Surface features, e.g. notches or protuberances

Abstract

PURPOSE: A body valve for a shock absorber is provided to reduce noise by preventing deformation of a suction valve with forming plural projections on the concentric circle of a body, and to cut down manufacturing cost by reducing the thickness of the disk. CONSTITUTION: Plural compression passages(230) are formed in a body(220) of a body valve(210) for a shock absorber by penetrating, and plural extension passages(240) are formed outside the compression passages. A suction valve is installed in the upper part of the body to open and close the compression passage and the extension passage, and a multi-disk is mounted in the lower part of the body to open and close the extension passage and the compression passage. Plural projections(270) are formed on the concentric circle of the body and protruded between the extension passages to support the suction valve in the lower part. Deformation of the suction valve is prevented by supporting the suction valve with the projections of the body in pushing the suction valve from over pressure.

Description

쇽 업소버의 바디밸브{BODY VALVE USE IN A SHOCK ABSORBER}Shock Absorber Body Valve {BODY VALVE USE IN A SHOCK ABSORBER}

본 발명은 쇽 업소버의 바디밸브에 관한 것으로서, 더욱 상세하게는 압축 행정시 압력 과다에 의한 흡입밸브의 변형을 방지한 쇽 업소버의 바디밸브에 관한 것이다.The present invention relates to a body valve of the shock absorber, and more particularly, to a body valve of the shock absorber which prevents deformation of the suction valve due to excessive pressure during the compression stroke.

일반적으로 쇽 업소버(shock absorber)는 차축과 차체 사이에 설치되어 차량의 주행시 차축이 노면으로부터 받는 진동이나 충격을 흡수하여 승차감을 향상시키는 방진, 완충장치로서, 그 내부는 가스 및 오일 등의 충진물이 채워져 감쇠력을 증대시킬 수 있도록 마련되는데, 통상적으로 오일이 충진된 유압식 쇽 업소버가 많이 사용된다.In general, shock absorbers are installed between the axle and the body to absorb vibrations or shocks received by the axle from the road surface to improve ride comfort. It is filled to increase the damping force, and oil-filled hydraulic shock absorbers are commonly used.

도 1은 이러한 종래의 쇽 업소버 내부를 보인 단면도이다. 이에 도시된 바와 같이 종래의 쇽 업소버(1)는 오일이 가득 채워진 내부관(20)과, 그 외측으로 오일이 절반정도 채워진 외부관(10), 그리고 일단은 내부관(20) 내측으로 삽입되고 타단은 외부관(10) 외측으로 연장된 피스톤 로드(30)가 마련된다.1 is a cross-sectional view showing the inside of such a conventional shock absorber. As shown therein, the conventional shock absorber 1 has an inner tube 20 filled with oil, an outer tube 10 filled with oil to the outside thereof, and one end is inserted into the inner tube 20. The other end is provided with a piston rod 30 extending to the outside of the outer tube (10).

상기 내부관(20)은 외부관(10)의 내측에 외부관(10)과 소정간격 이격되도록 설치되어 그 사이에 오일이 저장되는 저장실(15)을 형성하는 중공관으로서, 상측은 피스톤 로드(30)가 외부로 연장될 수 있도록 그 중심축이 개구되어 있고, 그 하측에는 저장실(15)과 내부관(20)의 내부로 오일이 유동되는 바디 몸체(22)를 가진 바디 밸브(21)가 설치되며, 그 하부에 베이스 캡(27)이 압입 설치된다. 그리고 내부관(20)의 내부에는 내부관(20)과 마찰되면서 슬라이딩 이동되는 피스톤 밸브(31)가 설치된다.The inner tube 20 is a hollow tube installed inside the outer tube 10 to be spaced apart from the outer tube 10 by a predetermined interval to form a storage chamber 15 in which oil is stored therebetween, the upper side of which is a piston rod ( A central valve is opened so that 30 may extend outward, and a lower side body valve 21 having a body body 22 through which oil flows into the storage chamber 15 and the inner tube 20 is provided. It is installed, the base cap 27 is press-installed in the lower portion. And the inside of the inner tube 20 is provided with a piston valve 31 which is slid and moved friction with the inner tube (20).

여기서 바디밸브(21)의 바디몸체(22)에는 압축 유로(23)가 관통한 상태로 복수 형성되고, 이 압축 유로(23)의 외측에는 복수의 인장 유로(24)가 형성된다.Here, a plurality of compression passages 23 penetrate the body body 22 of the body valve 21, and a plurality of tension passages 24 are formed outside the compression passage 23.

그리고 바디몸체(22)의 상면에는 압축 유로(23)와 인장 유로(24)를 개폐시키는 흡입밸브(25)가 설치되고, 바디몸체(22)의 하면에는 인장유로(24)와 압축 유로(23)를 개폐시키는 다판 디스크(26)가 설치된다.In addition, a suction valve 25 for opening and closing the compression passage 23 and the tension passage 24 is provided on the upper surface of the body body 22, and the tension passage 24 and the compression passage 23 are provided on the lower surface of the body body 22. The multi-plate disc 26 which opens and closes) is provided.

이와 같이 구성된 쇽 업소버는 피스톤 로드(30)의 상하 왕복운동에 따라 내부관(20)과 외부관(10)에 채워진 오일이 피스톤 밸브(31)와 바디밸브(21)를 통과하면서 감쇠력이 발생하게 된다.The shock absorber configured as described above allows the oil filled in the inner tube 20 and the outer tube 10 to pass through the piston valve 31 and the body valve 21 to generate a damping force according to the vertical reciprocating motion of the piston rod 30. do.

그러나 도 2에 도시된 바와 같이, 비정상적인 압축 행정시 압력 과다에 의한 여 하부 지지가 미약한 흡입밸브(25)가 소성 변형을 일으킨다. 따라서 흡입밸브(25)의 변형은 노이즈가 발생되며, 승차감이 저하되는 문제점이 있다. 한편, 흡입밸브(25)의 변형 방지를 위해 두께를 더 두껍게 하면 변형은 방지할 수 있으나 리바운드 행정시 흡입밸브를 열고 오일이 흐르는 현 구조에서는 감쇠력 불연속점이 발생하여 승차감이 저하된다.However, as shown in FIG. 2, the intake valve 25 having a weak lower support due to excessive pressure during an abnormal compression stroke causes plastic deformation. Therefore, the deformation of the suction valve 25 is a noise is generated, there is a problem that the ride comfort is reduced. On the other hand, if the thickness of the intake valve 25 is made thicker to prevent deformation, deformation can be prevented. However, in the current structure in which the intake valve is opened and oil flows during the rebound stroke, a damping force discontinuity occurs to reduce the riding comfort.

본 발명은 상술한 바와 같은 종래의 문제점을 해결하기 위한 것으로서, 압력 과다에 의한 흡입밸브의 변형을 방지하여 노이즈를 저감시킨 쇽 업소버의 바디밸브를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to provide a shock absorber body valve which reduces noise by preventing deformation of the suction valve due to excessive pressure.

상기의 목적을 달성하기 위하여 본 발명은, 내부관의 하단에 설치되며 외부관에 설치된 베이스 캡과의 사이에서 내부관과 외부관을 연통시키는 바디몸체를 구비하는 쇽 업소버의 바디밸브에 있어서; 상기 바디몸체의 상면중 인장 유로가 형성된 동심원상에 흡입밸브를 지지할 수 있는 돌기부가 다수개 형성된 것을 특징으로 하는 쇽 업소버의 바디밸브를 제공한다.In order to achieve the above object, the present invention, in the body valve of the shock absorber having a body body which is installed in the lower end of the inner tube and the inner tube and the outer tube between the base cap installed in the outer tube; It provides a shock absorber body valve characterized in that a plurality of protrusions that can support the suction valve on the concentric circle is formed in the upper surface of the body body is formed.

도 1은 종래 쇽 업소버를 도시한 단면도이고,1 is a cross-sectional view showing a conventional shock absorber,

도 2는 종래 바디밸브의 단판 디스크가 과다한 압력으로 변형되는 것을 도시한 일부 발췌 단면도이고,Figure 2 is a partial cross-sectional view showing the deformation of the single plate disk of the conventional body valve to excessive pressure,

도 3은 본 발명에 따른 쇽 업소버의 바디밸브를 도시한 단면도이고,3 is a cross-sectional view showing the body valve of the shock absorber according to the present invention,

도 4는 본 발명에 따른 바디밸브의 바디몸체를 도시한 사시도이다.Figure 4 is a perspective view showing the body of the body valve according to the present invention.

＜도면의 주요부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>

210 : 바디밸브 220 : 바디몸체210: body valve 220: body body

230 : 압축 유로 240 : 인장 유로230: compression passage 240: tension passage

250 : 흡입밸브 260 : 다판 디스크250: suction valve 260: multi-plate disc

261 : 디스크-S 262 : 디스크261: disk-S 262: disk

263 : 리테이너 270 : 돌기부263: retainer 270: protrusion

이하 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시 예를 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 쇽 업소버의 바디밸브를 도시한 단면도이고, 도 4는 본 발명에 따른 바디밸브의 바디몸체를 도시한 사시도이다.3 is a cross-sectional view showing a body valve of the shock absorber according to the present invention, Figure 4 is a perspective view showing the body body of the body valve according to the present invention.

본 발명에 따른 쇽 업소버의 바디밸브는, 도 3에 도시되어 있는 바와 같이, 바디밸브(210)의 바디몸체(220)에 압축 유로(230)가 관통한 상태로 복수 형성되고, 이 압축 유로(230)의 외측에는 복수의 인장 유로(240)가 형성된다.As shown in FIG. 3, the body valve of the shock absorber according to the present invention is formed in plural in a state in which the compression flow path 230 penetrates the body body 220 of the body valve 210. A plurality of tension passages 240 are formed outside the 230.

그리고 바디몸체(220)의 상면에는 압축 유로(230)와 인장 유로(240)를 개폐시키는 흡입밸브(250)가 설치되고, 바디몸체(220)의 하면에는 인장유로(240)와 압축 유로(230)를 개폐시키는 다판 디스크(260)가 설치된다.In addition, a suction valve 250 for opening and closing the compression passage 230 and the tension passage 240 is installed on the upper surface of the body body 220, and the tension passage 240 and the compression passage 230 are disposed on the lower surface of the body body 220. The multi-plate disc 260 which opens and closes) is installed.

그리고 다판 디스크(260)는 순차적으로 적층되는 디스크-S(261)와, 복수의 디스크(262)와, 리테이너(263)로 이루어지며, 디스크-S(261)에는 슬릿(261a)이 형성된다.The multi-disc disk 260 is composed of a disk-S 261, a plurality of disks 262, and a retainer 263 that are sequentially stacked, and a slit 261a is formed in the disk-S 261.

그리고 본 발명의 특징에 따라 바디몸체(220)의 상면에는 흡입밸브(250)를 하부에서 지지할 수 있도록 흡입밸브(250)의 설치시 그 하면에 맞닿을 수 있을 높이로 다수개의 돌기부(270)가 형성된다.And the upper surface of the body body 220 in accordance with the features of the plurality of protrusions 270 to be in contact with the lower surface when the suction valve 250 is installed to support the suction valve 250 from the bottom Is formed.

돌기부(270)는 인장 유로(240)가 형성되어 있는 동심원상인 각 인장 유로(240)의 사이마다 복수개 돌출 형성된다.A plurality of protrusions 270 are formed to protrude between each of the tension passages 240, which are concentric circles in which the tension passages 240 are formed.

이와 같이 구성된 본 발명에 따른 쇽 업소버의 바디밸브는, 다음과 같이 작동된다.The body valve of the shock absorber according to the present invention configured as described above is operated as follows.

먼저, 인장 행정에서는 도 3에 점선으로 도시된 바와 같이, 유체가 바디몸체(220)의 인장 유로(240)를 통해 흡입밸브(250)가 상방으로 밀어 올려지면서 감쇠력을 발생시키게 된다.First, in the tension stroke, as shown by the dotted line in FIG. 3, the suction valve 250 is pushed upward through the tension passage 240 of the body body 220 to generate a damping force.

그리고 압축 행정에서는 도 3에 실선으로 도시된 바와 같이, 유체가 흡입밸브(250)를 지나 압축 유로(230)로 유입되고, 유입된 유체는 다판 디스크(260)의 디스크-S(261)의 슬릿(261a)과 디스크(262)를 통과하면서 감쇠력을 발생시키게 된다.In the compression stroke, as shown by the solid line in FIG. 3, the fluid flows through the suction valve 250 to the compression flow path 230, and the fluid flows into the slit of the disc-S 261 of the multi-disc disk 260. The damping force is generated while passing through the 261a and the disk 262.

그러나 이 때, 비정상적으로 과다한 압력으로 흡입밸브(250)를 상부에서 누르게 되면, 흡입밸브(250)의 상부 반력에 의하여 소성 변형을 가져와 노이즈가 발생하게 된다. 따라서 바디몸체(220) 상의 돌기부(270)가 흡입밸브(250)를 하부에서 지지하여 압력이 상충되어 변형되는 것을 방지하게 된다.At this time, however, when the suction valve 250 is pressed from the upper part with abnormally excessive pressure, plastic deformation is caused by the upper reaction force of the suction valve 250, and noise is generated. Therefore, the protrusion 270 on the body body 220 supports the suction valve 250 from the bottom to prevent the pressure from being conflicted and deformed.

그리고 변형이 방지되는 흡입밸브(250)는 종래에 비하여 그 두께를 얇게 형성시킬 수 있게 된다.And the suction valve 250 is prevented deformation can be formed thinner than the conventional.

따라서 흡입밸브(250)의 변형 방지로 노이즈가 저감되어 차량의 승차감 향상과 제품 단가가 낮아지게 된다.Therefore, noise is reduced by preventing deformation of the suction valve 250, thereby improving the riding comfort of the vehicle and lowering the product cost.

이상에서는 본 발명을 특정의 바람직한 실시 예에 대하여 도시하고 또한 설명하였으나, 본 발명은 상술한 실시 예에 한정되지 아니하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이하 청구범위에 기재된 본 발명의 요지를 벗어남이 없이 다양한 변경실시가 가능할 것이다.Although the present invention has been illustrated and described with respect to certain preferred embodiments, the present invention is not limited to the above-described embodiments, and a person skilled in the art to which the present invention pertains has the present invention set forth in the claims below. Various modifications may be made without departing from the spirit of the invention.

이상에서 설명한 바와 같이 본 발명 쇽 업소버의 바디밸브에 의하면, 흡입밸브의 변형을 방지하는 돌기부의 형성으로 노이즈가 저감되며, 단판 디스크의 제작 두께가 줄어들어 제품 단가가 낮아지는 효과가 있다.As described above, according to the body valve of the shock absorber of the present invention, the noise is reduced by the formation of the protrusion preventing the deformation of the intake valve, and the manufacturing thickness of the end plate disk is reduced, thereby reducing the product cost.

Claims (1)

내부관의 하단에 설치되며 외부관에 설치된 베이스 캡과의 사이에서 내부관과 외부관을 연통시키는 바디몸체를 구비하는 쇽 업소버의 바디밸브에 있어서;In the body valve of the shock absorber is installed on the lower end of the inner tube and having a body body for communicating the inner tube and the outer tube between the base cap installed in the outer tube; 상기 바디몸체의 상면중 인장 유로가 형성된 동심원상에 흡입밸브를 지지할 수 있는 돌기부가 다수개 형성된 것을 특징으로 하는 쇽 업소버의 바디밸브.A shock absorber body valve, characterized in that a plurality of protrusions that can support the suction valve on the concentric circle is formed in the upper surface of the body body.
KR1020020056132A 2002-09-16 2002-09-16 Body valve use in a shock absorber KR20040024705A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101218839B1 (en) * 2010-09-07 2013-01-07 주식회사 만도 Sock absorber
WO2021061539A1 (en) * 2019-09-23 2021-04-01 DRiV Automotive Inc. Shock absorber base valve assembly
US11867254B2 (en) 2019-05-13 2024-01-09 Tenneco Automotive Operating Company, Inc. Pressure relief for a hydraulic compression stop device
WO2024058755A1 (en) * 2022-09-12 2024-03-21 Turkiye'nin Otomobili Girisim Grubu Sanayi Ve Ticaret Anonim Sirketi A shock damping member

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101218839B1 (en) * 2010-09-07 2013-01-07 주식회사 만도 Sock absorber
US11867254B2 (en) 2019-05-13 2024-01-09 Tenneco Automotive Operating Company, Inc. Pressure relief for a hydraulic compression stop device
WO2021061539A1 (en) * 2019-09-23 2021-04-01 DRiV Automotive Inc. Shock absorber base valve assembly
US11181161B2 (en) 2019-09-23 2021-11-23 DRiV Automotive Inc. Shock absorber base valve assembly
WO2024058755A1 (en) * 2022-09-12 2024-03-21 Turkiye'nin Otomobili Girisim Grubu Sanayi Ve Ticaret Anonim Sirketi A shock damping member

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