KR20020043857A - Rebound stopper rubber for use in a shock absorber - Google Patents

Rebound stopper rubber for use in a shock absorber Download PDF

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Publication number
KR20020043857A
KR20020043857A KR1020000073003A KR20000073003A KR20020043857A KR 20020043857 A KR20020043857 A KR 20020043857A KR 1020000073003 A KR1020000073003 A KR 1020000073003A KR 20000073003 A KR20000073003 A KR 20000073003A KR 20020043857 A KR20020043857 A KR 20020043857A
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KR
South Korea
Prior art keywords
rubber
shock absorber
rebound stopper
rebound
shock
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KR1020000073003A
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Korean (ko)
Inventor
임정호
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밍 루
주식회사 만도
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Priority to KR1020000073003A priority Critical patent/KR20020043857A/en
Publication of KR20020043857A publication Critical patent/KR20020043857A/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
    • 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
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • F16F9/49—Stops limiting fluid passage, e.g. hydraulic stops or elastomeric elements inside the cylinder which contribute to changes in fluid damping
    • 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
    • F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
    • 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
    • F16F9/3207—Constructional features
    • F16F9/3235—Constructional features of cylinders
    • F16F9/3257—Constructional features of cylinders in twin-tube type devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

PURPOSE: A rebound stopper rubber of a shock absorber is provided to improve the traveling experience of a vehicle by effectively absorbing a shock in the full rebound via a gap formed in a protruded portion of a rubber volume part. CONSTITUTION: A flange-shaped rebound stopper(150) is fixed in the middle of a piston rod(130). A rubber(160) is placed on the rebound stopper. The rubber is found in the shape of a ring inserted with the piston rod. A protruded volume part(161) is protruded on the outer face of the rubber. Rectangular protruded portions(162) are formed on one side of the volume part. After a piston valve(131) moves downward, the piston rod and the piston valve move upward by the restorative force of a shock absorbing spring of a shock absorber. The rubber also moves upward, and is compressed between the rebound stoppers. The protruded portions of the volume part form an oil passage gap around the protruded portions while face-to-face contacting to the inner face of an interior pipe(120). Oil is drained through the gap. Therefore, the vibration and shock of a vehicle body are absorbed.

Description

쇽 업소버의 리바운드 스토퍼 러버{REBOUND STOPPER RUBBER FOR USE IN A SHOCK ABSORBER}BO REBOUND STOPPER RUBBER FOR USE IN A SHOCK ABSORBER}

본 발명은 쇽 업소버의 리바운드 스토퍼 러버에 관한 것으로서, 더욱 상세하게는 리바운드 충격을 효과적으로 감쇠시킬 수 있도록 한 쇽 업소버의 리바운드 스토퍼 러버에 관한 것이다.The present invention relates to a rebound stopper rubber of a shock absorber, and more particularly, to a rebound stopper rubber of a shock absorber capable of effectively attenuating a rebound impact.

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. The interior is filled with fillers such as gas and oil. It is provided to increase the damping force, and oil-filled hydraulic shock absorbers are commonly used.

도 1a는 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.1A is a cross-sectional view showing the inside of this 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 피스톤 로드(30)는 상측 선단이 내부관(20)과 외부관(10)을 관통하여 더스트 커버(13)와 결합됨으로써 차체와 연결되고, 내부관(20)의 내부로 삽입된 하측 선단은 쇽 업소버(1)의 감쇠력을 발생시키는 피스톤 밸브(31)와 결합된다. 그리고 피스톤 로드(30)의 중간부에는 리바운드 스토퍼(32)가 고정 설치되며, 그 상부에는 러버(33)가 위치한다. 상기 리바운드 스토퍼(32)와 러버(33)는 차량의 풀 리바운드시에 휠 스트로크의 최고점에서, 즉 현가범위가 최대한 확장되었을 때 현가 작용을 규제하고 충격을 감쇠시키고 쇽 업소버의 파손을 방지하기 위하여 설치된것이다.The piston rod 30 is connected to the vehicle body by the upper end is coupled to the dust cover 13 through the inner tube 20 and the outer tube 10, the lower end inserted into the inner tube 20 is The shock absorber 1 is engaged with the piston valve 31 which generates the damping force. And the rebound stopper 32 is fixedly installed in the middle part of the piston rod 30, and the rubber 33 is located in the upper part. The rebound stopper 32 and the rubber 33 are installed at the highest point of the wheel stroke at the full rebound of the vehicle, i.e., to regulate the suspension action, damp the shock and prevent the shock absorber from being broken when the suspension range is fully extended. will be.

그러나, 이와 같은 종래의 쇽 업소버의 리바운드 스토퍼 러버는, 도 1b에 도시된 바와 같이, 풀 리바운드 행정시 피스톤 로드(30)의 이동에 따라 피스톤 로드(30)에 고정되어 있는 리바운드 스토퍼(32)와 그 상부에 위치한 러버(33)가 이동되면서, 러버(33)가 압축 작용에 의해 그 외경이 증대되어 그 외면이 내부관(20)의 내면과 밀착된다. 따라서 로드 가이드(40)와 러버(33) 사이에 오일이 밀폐되어 리바운드 스토퍼(32)의 정상적인 압축이 이루어지지 않기 때문에 리바운드 충격을 효과적으로 감쇠시킬 수 없는 문제점이 있었다.However, the rebound stopper rubber of the conventional shock absorber has a rebound stopper 32 fixed to the piston rod 30 as the piston rod 30 moves during the full rebound stroke, as shown in FIG. 1B. As the rubber 33 positioned at the upper portion thereof is moved, the outer diameter of the rubber 33 is increased by the compression action, and the outer surface thereof is in close contact with the inner surface of the inner tube 20. Therefore, since the oil is sealed between the rod guide 40 and the rubber 33 and normal compression of the rebound stopper 32 is not performed, there is a problem in that the rebound shock cannot be effectively attenuated.

본 발명은 상술한 바와 같은 종래의 문제점을 해결하기 위한 것으로서, 풀 리바운드시 발생되는 충격을 효과적으로 흡수하여 감쇠시킬 수 있는 쇽 업소버의 리바운드 스토퍼 러버를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a shock absorber rebound stopper rubber capable of effectively absorbing and attenuating shock generated during full rebound.

상기의 목적을 달성하기 위하여 본 발명은, 쇽 업소버의 현가범위가 최대한 확장되었을 때 현가작용을 규제하고 충격을 감쇠시키기 위하여 설치된 쇽 업소버의 리바운드 스토퍼 러버에 있어서; 상기 러버의 볼륨부 외주면 일측에 압축시 내부관과 러버 외주면에 오일 통과 틈새를 형성하는 돌기부가 마련된 것을 특징으로 하는 쇽 업소버의 리바운드 스토퍼 러버를 제공하는데 그 특징이 있다.In order to achieve the above object, the present invention relates to a rebound stopper rubber of a shock absorber installed to regulate the suspension action and dampen an impact when the suspension range of the shock absorber is maximized; It is characterized by providing a rebound stopper rubber of the shock absorber, characterized in that a protrusion is formed on the outer circumferential surface of the rubber part to form an oil passage gap in the inner tube and the rubber outer circumferential surface when compressed.

도 1a는 종래 쇽 업소버의 리바운드 스토퍼 러버를 도시한 단면도.1A is a cross-sectional view showing a rebound stopper rubber of a conventional shock absorber.

도 1b는 종래 쇽 업소버의 리바운드 스토퍼 러버의 사용상태를 도시한 단면도.1B is a cross-sectional view showing a state of use of a rebound stopper rubber of a conventional shock absorber.

도 2는 본 발명에 따른 쇽 업소버의 리바운드 스토퍼 러버를 도시한 단면도.2 is a cross-sectional view showing the rebound stopper rubber of the shock absorber according to the present invention;

도 3은 본 발명에 따른 쇽 업소버의 리바운드 스토퍼 러버의 사용상태를 도시한 단면도.3 is a cross-sectional view showing a state of use of the rebound stopper rubber of the shock absorber according to the present invention.

도 4는 본 발명에 따른 A-A선 확대 단면도.4 is an enlarged sectional view taken along line A-A according to the present invention.

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

100 : 쇽 업소버 110 : 외부관100: shock absorber 110: outer tube

120 : 내부관 130 : 피스톤 로드120: inner tube 130: piston rod

131 : 피스톤 밸브 140 : 로드 가이드131: piston valve 140: rod guide

150 : 리바운드 스토퍼 160 : 러버150: rebound stopper 160: rubber

161 : 볼륨부 162 : 돌기부161: volume portion 162: projection portion

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

도 2는 본 발명에 따른 쇽 업소버의 리바운드 스토퍼 러버를 도시한 단면도이고, 도 3은 본 발명에 따른 쇽 업소버의 리바운드 스토퍼 러버의 사용상태를 도시한 단면도이고, 도 4는 본 발명에 따른 A-A선 확대 단면도이다.2 is a cross-sectional view showing the rebound stopper rubber of the shock absorber according to the present invention, Figure 3 is a cross-sectional view showing the state of use of the rebound stopper rubber of the shock absorber according to the present invention, Figure 4 is a line AA according to the present invention It is an enlarged cross section.

본 발명에 따른 쇽 업소버는, 도 2에 도시되어 있는 바와 같이, 차량용 쇽 업소버(100)는, 오일이 가득 채워진 내부관(120)과 이 내부관(120)의 외측으로는 오일이 절반정도 채워진 외부관(110), 그리고 일단은 내부관(120)의 내측으로 삽입되어 상, 하 이동가능하게 설치되고 타단은 외측으로 연장되는 피스톤 로드(130)가 마련된다.In the shock absorber according to the present invention, as shown in FIG. 2, the vehicle shock absorber 100 includes an inner tube 120 filled with oil and an oil half filled outside of the inner tube 120. The outer tube 110, and one end is inserted into the inner tube 120 is installed to move up, down and the other end is provided with a piston rod 130 extending outward.

상기 피스톤 로드(130)는 상측 선단이 내부관(120)과 외부관(110)을 관통하여 미도시된 차체에 결합되고, 하측 선단은 쇽 업소버(100)의 감쇠력을 발생시키는 피스톤 밸브(131)와 결합된다. 그리고 상기 피스톤 로드(130)의 중간부에는 프랜지 형상의 리바운드 스토퍼(150)가 고정되어 있으며, 그 상부에는 러버(160)가 위치한다.The piston rod 130 has an upper end coupled to the vehicle body not shown through the inner tube 120 and the outer tube 110, and the lower end of the piston rod 131 generates a damping force of the shock absorber 100. Combined with. In addition, a flange-shaped rebound stopper 150 is fixed to an intermediate portion of the piston rod 130, and a rubber 160 is positioned on an upper portion thereof.

상기 러버(160)는 피스톤 로드(130)가 삽입되는 링형상으로, 외측면에 돌출된 볼륨부(161)가 연속적으로 이어지며, 그 볼륨부(161) 일측에는 각각 사각의 돌기부(162)가 형성된다.The rubber 160 has a ring shape into which the piston rod 130 is inserted, and continuously extends the volume portion 161 protruding from the outer surface thereof, and square protrusions 162 are formed at one side of the volume portion 161. Is formed.

이와 같이 구성된 본 발명에 따른 쇽 업소버의 동작은 다음과 같다.Operation of the shock absorber according to the present invention configured as described above is as follows.

도 3에 도시된 바와 같이, 피스톤 밸브(131)가 하측으로 이동한 후에 쇽 업소버(100)의 외측에 마련된 완충 스프링의 복원력으로 피스톤 로드(130)와 피스톤 밸브(131)가 상측으로 이동하게 되는데, 이 때 피스톤 로드(130)의 중간부에 위치고정된 리바운드 스토퍼(150)와 그 상부에 있는 러버(160)도 함께 상측으로 이동한다. 그리고 이동된 러버(160)는 로드 가이드(140) 하단에 접촉되며 리바운드 스토퍼(150)와의 사이에서 압축된다. 그리고 압축시 러버(160)의 볼륨부(161) 일측에 형성된 돌기부(162)는 도 4에 도시된 바와 같이, 내부관(120)의 내면과 면접촉된 상태에서 돌기부(162) 주변에 오일 통과 틈새를 형성하게 된다. 따라서 로드 가이드(140)와 러버(160) 사이에 잔존하던 오일이 돌기부(162)로 하여 형성된 틈새로 빠져나갈 수 있게 된다.As shown in FIG. 3, after the piston valve 131 is moved downward, the piston rod 130 and the piston valve 131 are moved upward by the restoring force of the shock absorbing spring provided on the outside of the shock absorber 100. At this time, the rebound stopper 150 fixed to the middle portion of the piston rod 130 and the rubber 160 located thereon also move upward. The moved rubber 160 is in contact with the bottom of the rod guide 140 and is compressed between the rebound stopper 150. In addition, the protrusion 162 formed on one side of the volume 161 of the rubber 160 during compression passes through the oil around the protrusion 162 in a state of being in surface contact with the inner surface of the inner tube 120, as shown in FIG. 4. It will form a gap. Therefore, the oil remaining between the rod guide 140 and the rubber 160 can escape into the gap formed by the protrusion 162.

그러므로 종래의 로드 가이드(140)와 리바운드 스토퍼(150) 사이에 밀폐 충진되어 압축에 방해가 되었던 오일이 유동되어, 피스톤 로드(130)의 상, 하측 이동시 오일의 유동저항으로 인해 차체의 진동이나 충격을 흡수시켜 차량의 승차감을 향상시킨다.Therefore, the oil, which has been hindered by compression due to hermetic filling between the rod guide 140 and the rebound stopper 150, flows, and the vibration or impact of the vehicle body due to the flow resistance of the oil when the piston rod 130 moves up and down. It absorbs and improves the ride comfort of the vehicle.

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 리바운드 스토퍼 러버에 의하면, 러버 볼륨부의 외주면 일측에 형성된 돌기부는 내부관과 러버에 오일이 통과할 틈새를 형성시켜 풀 리바운드시 충격 흡수력 향상에 따른 차량의 승차감을 높이는 효과가 있다.As described above, according to the rebound stopper rubber of the shock absorber of the present invention, the protrusion formed on one side of the outer circumferential surface of the rubber volume portion forms a clearance for oil to pass through the inner tube and the rubber, thereby improving the riding comfort of the vehicle due to the improvement of the shock absorbing force during full rebound. The height is effective.

Claims (1)

쇽 업소버의 현가범위가 최대한 확장되었을 때 현가작용을 규제하고 충격을 감쇠시키기 위하여 설치된 쇽 업소버의 리바운드 스토퍼 러버에 있어서;In the shock absorber rebound stopper rubber installed to regulate the suspension action and dampen the impact when the suspension's suspension range is extended as far as possible; 상기 러버의 볼륨부 외주면 일측에 압축시 내부관과 러버 외주면에 오일 통과 틈새를 형성하는 돌기부가 마련된 것을 특징으로 하는 쇽 업소버의 리바운드 스토퍼 러버.The rebound stopper rubber of the shock absorber, characterized in that a protrusion is formed on the outer peripheral surface of the rubber portion to form an oil passage gap in the inner tube and the rubber outer peripheral surface when compressed.
KR1020000073003A 2000-12-04 2000-12-04 Rebound stopper rubber for use in a shock absorber KR20020043857A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170068317A (en) * 2015-12-09 2017-06-19 현대자동차주식회사 Shock absorber
CN109488717A (en) * 2018-12-07 2019-03-19 宁波金城减震器有限公司 A kind of automobile absorber
KR20210117033A (en) * 2020-03-18 2021-09-28 주식회사 디엠씨 Shock absorber rebound buffer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980029769A (en) * 1996-10-28 1998-07-25 김영귀 Rebound Stopper Cushion Rubber for Vehicle Shock Absorber
JP2000120757A (en) * 1998-10-16 2000-04-25 Unisia Jecs Corp Hydraulic buffer
KR200178172Y1 (en) * 1997-04-23 2000-05-01 박문규 Structure of rear shock-absorber for two wheel automobile

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980029769A (en) * 1996-10-28 1998-07-25 김영귀 Rebound Stopper Cushion Rubber for Vehicle Shock Absorber
KR200178172Y1 (en) * 1997-04-23 2000-05-01 박문규 Structure of rear shock-absorber for two wheel automobile
JP2000120757A (en) * 1998-10-16 2000-04-25 Unisia Jecs Corp Hydraulic buffer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170068317A (en) * 2015-12-09 2017-06-19 현대자동차주식회사 Shock absorber
CN109488717A (en) * 2018-12-07 2019-03-19 宁波金城减震器有限公司 A kind of automobile absorber
KR20210117033A (en) * 2020-03-18 2021-09-28 주식회사 디엠씨 Shock absorber rebound buffer

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