WO2019134156A1 - Dispositif de roulement d'appui de suspension - Google Patents

Dispositif de roulement d'appui de suspension Download PDF

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Publication number
WO2019134156A1
WO2019134156A1 PCT/CN2018/071711 CN2018071711W WO2019134156A1 WO 2019134156 A1 WO2019134156 A1 WO 2019134156A1 CN 2018071711 W CN2018071711 W CN 2018071711W WO 2019134156 A1 WO2019134156 A1 WO 2019134156A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
bearing
contact
cover
guide ring
Prior art date
Application number
PCT/CN2018/071711
Other languages
English (en)
Chinese (zh)
Inventor
严柳青
吴勇
余向阳
努伊瑟·克里斯蒂安
Original Assignee
舍弗勒技术股份两合公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 舍弗勒技术股份两合公司 filed Critical 舍弗勒技术股份两合公司
Priority to PCT/CN2018/071711 priority Critical patent/WO2019134156A1/fr
Priority to CN201880084960.7A priority patent/CN111542446B/zh
Publication of WO2019134156A1 publication Critical patent/WO2019134156A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • 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

Definitions

  • the present invention relates to a suspension strut bearing device having a cover and a guide ring rotatable relative to the cover, wherein the cover and the guide ring are formed by a snap connection a detached snap connection, between the cover and the guide ring, a bearing and at least two sealing means for sealing the bearing, the sealing device being fixed to the cover and forming a dynamic seal with the guide ring At least one sealing device is disposed between the bearing and the snap connection.
  • Suspension strut bearings are a particularly important part of vehicle suspension.
  • the suspension ensures the driving safety and driving comfort while ensuring agile and precise steering of the wheels.
  • a wide variety of different suspensions are known, such as the MacPherson suspension system.
  • the MacPherson suspension consists mainly of springs, dampers and steering knuckles.
  • Suspension strut bearings are also provided in the MacPherson suspension.
  • the suspension strut bearing has a cover fixed to the suspension strut bracket on the chassis side and a guide ring that supports and guides the damper spring.
  • the guide ring is rotatably mounted relative to the cover.
  • a suspension bearing device is known from DE 10 2015 209 776 A1, the suspension strut bearing device having a cover and a guide ring rotatable relative to the cover, wherein a bearing is provided between the cover and the guide ring Further, the cover includes a soft portion and a hard portion having two sealing lips for sealing the bearing to form a dynamic seal with the guide ring.
  • a snap device for detachably connecting the cover and the guide ring is further provided, and at least one sealing lip is located between the snap device and the bearing.
  • a groove is provided between the snap device and the bearing to accumulate the lubricating oil of the bearing.
  • the technical problem to be solved by the present invention is to provide a suspension strut bearing device, the sealing device of which can effectively prevent the leakage of the lubricating oil of the bearing, and can effectively prevent the dirt from entering the bearing to improve the suspension.
  • the service life and reliability of the strut bearing unit ultimately improve the driving safety, driving comfort and steering accuracy of the vehicle.
  • a suspension strut bearing device having a cover and a guide ring rotatable relative to the cover, wherein the cover and the guide ring are formed by a snap connection a detachable snap connection with a bearing and at least two sealing means for sealing the bearing between the cover and the guide ring, the sealing device being fixed to the cover and forming a dynamic seal with the guide ring, wherein at least a sealing device is disposed between the bearing and the snap connection, and a sealing region is provided on the guide ring for forming a seal with the at least one of the sealing devices, the sealing region according to the design of the invention Is a continuous smooth curved surface, the curved surface can be divided into three parts, that is, the non-contact inclined surface, the contact curved surface and the side inclined surface in descending order of the distance from the cover in the axial direction, wherein At least one of the sealing means abuts against the contact arc surface, the side slope being between the at least one of the sealing means and the bearing.
  • the sealing area that is placed in contact with the seal and forms a dynamically sealed guide ring is a continuous smooth curved surface that advantageously reduces seals and seals. Friction between the zones and avoiding the seals from contacting the seal area in contact with the seal area is not tight or even detached, causing leakage of lubricating oil and/or dirt into the bearing area.
  • the curved curved surface is divided into three parts, that is, the non-contact inclined surface, the contact curved surface and the side inclined surface are sequentially arranged in accordance with the distance from the cover in the axial direction, and the sealing device abuts against the contact curved surface.
  • Upper side bevel is between the sealing device and the bearing, so that the curved curved surface forms a slope with an inclination toward the sealing device, the non-contact surface away from the bearing is the bottom, and the side inclined surface close to the bearing is the top, thereby ensuring external contamination The object does not enter the bearing area.
  • the non-contact ramp is provided in the suspension strut bearing arrangement at a small angle of inclination with respect to the horizontal plane, for example at an angle of 5° to 25°, and the non-contact ramp is tangent to the contact curved surface, Thereby achieving a continuous transition.
  • the contact curved surface is also preferable to provide the contact curved surface as a circular arc surface in the suspension strut bearing device, for example, having a radius of 2 to 5 mm, and the contact curved surface is tangent to the non-contact inclined surface and the side inclined surface.
  • the curved curved surface composed of the non-contact inclined surface, the contact curved surface and the side inclined surface is continuous smooth, that is, the sealing area is continuous and smooth, thereby ensuring the reliability of the dynamic sealing.
  • the non-contact inclined surface, the contact curved surface and the side inclined surface together form an upper slope surface having a large slope and the upward slope surface faces the sealing device, if the sealing device is temporarily separated from the sealing region under vibration, the dirt can be It is blocked by the side slope having a large inclination angle, so that the dirt of the sealing device away from the bearing side can be particularly effectively prevented from entering the bearing, thereby affecting the service life and reliability of the suspension strut bearing device.
  • a projection extending axially toward the cover is provided between the sealing region of the guide ring and the bearing, the side bevel of the sealing region forming the projection on the side of the sealing region The outer surface.
  • the spacing of the projections from the cover in the axial direction is set such that the spacing ensures that the projections do not come into contact with the cover during operation, thereby reducing the risk of noise problems.
  • the spacing between the projection and the cover is advantageously provided such that when the guide ring is in the maximum tilt position, the projection just touches the cover, thereby ensuring that the projection is on the shaft The maximum height up.
  • the bearing lubricating oil flows to the sealing device as much as possible, on the other hand, the collision between the guiding ring and the cover is avoided on the other hand, and the function of the suspension bearing device as a whole is not affected, thereby being suspended.
  • the sealing device is designed as a sealing lip, in particular the sealing device facing the inner seal is designed as a sealing lip, and the sealing lip is pressed against the sealing lip in a prestressed manner.
  • the sealing lip forms a first lip angle with the contact curved surface facing the side bevel and a second lip angle facing the non-contact bevel, and the first lip angle and/or the second lip angle can be set according to the pumping effect. Thereby achieving a better sealing effect.
  • the so-called pumping effect means that when the rotating shaft rotates relative to the sealing member, different pressure changes occur on the oil storage side and the air side of the sealing member, and the result of the change causes the air side to form a certain outward suction force with respect to the oil storage side.
  • the external contaminants cannot enter the oil storage side, thus achieving the purpose of sealing.
  • the first lip angle is set to be smaller than the second lip angle and/or the first lip angle is set to be less than 45°, whereby the risk of external contaminants entering the bearing side can be reduced by the pumping effect.
  • the bearing can be a rolling bearing or a sliding bearing in the suspension strut bearing device.
  • the bearing is particularly preferably a thrust ball bearing.
  • Figure 1 is a cross-sectional perspective view of a suspension strut bearing device in accordance with the present invention
  • Figure 2 is a partial enlarged view of the suspension strut bearing device shown in Figure 1.
  • a suspension strut bearing arrangement for a motor vehicle (not shown here) comprises a cover 10 and a guide ring 20.
  • the cover 10 is fixedly coupled to a suspension strut bracket (not shown) on the chassis side.
  • the guide ring 20 supports and guides a damper spring (not shown) and the guide ring 20 is rotatable relative to the cover 10.
  • a bearing 30 and sealing means 12, 13 for sealing the bearing 30 are provided between the cover 10 and the guide ring 20 to prevent the lubricating oil of the bearing from flowing out while preventing entry of external contaminants.
  • the cover 10 is manufactured in a time-saving and economical manner by a two-component injection molding process, so that the cover 10 has both a soft portion and a hard portion.
  • the guide ring 20 is also manufactured by injection molding and includes a hard portion.
  • the bearing 30 is placed between the cover 10 and the guide ring 20.
  • the bearing 30 is a rolling bearing, in particular a thrust ball bearing, and comprises an inner ring 30, an outer ring 31, a cage 32 and a steel ball 33.
  • the steel balls 33 are placed in the grooves of the cage 32, the cages being located between the inner ring 30 and the outer ring 31, both of which are made of steel, and the steel balls 33 are in angular contact with both the inner ring 30 and the outer ring 31.
  • the inner ring 30 simultaneously abuts against the hard portion of the cover 10 in the axial and radial directions
  • the outer ring 31 simultaneously abuts against the hard portion of the guide ring 20 in the axial and radial directions
  • sealing means 12, 13 for dynamically sealing the rolling bearing are provided, the sealing means 12, 13 being constituted by the soft portion described above. That is to say, the sealing means 12, 13 are soft, resilient seals extending upwardly on the cover 10 in the axial direction, the seals being integrally formed with the cover 10.
  • the sealing device 12 on the right side of the drawing has two sealing lips 12a, 12b, and the sealing lip 12a close to the bearing is in contact with the smooth side of the guiding ring 20 and forms a dynamic seal during operation to
  • the sealing lip 12b away from the bearing gently contacts the guiding ring 20, and prevents relatively large pollutants from entering the rolling bearing while not affecting the anti-vibration effect of the chassis of the motor vehicle.
  • the sealing device on the left side of the drawing is a separate sealing lip 13. The sealing lip 13 is in contact with the sealing region 22 on the guide ring 20 and forms a dynamic seal.
  • the sealing region 22 on the guide ring 20 is a continuous smooth curved surface which is divided into three sections, i.e. in accordance with the distance from the cover 10 in the axial direction.
  • the large to small step is the non-contact inclined surface 22a, the contact curved surface 22b and the side inclined surface 22c, so that the non-contact inclined surface 22a has the largest distance from the cover 10 in the axial direction and the side inclined surface 22c has the smallest distance from the cover 10 in the axial direction.
  • the sealing means 13 abuts against the contact cam surface 22b, the side bevel 22c being between the sealing lip 13 and the bearing 30.
  • the non-contact bevel 22a is provided at a relatively gentle angle with respect to the horizontal plane, for example, an angle of 5 to 25 .
  • the contact curved surface 22b is provided to be tangent to the non-contact inclined surface 22a, and the contact curved surface 22b has a circular arc radius of 2 to 5 mm.
  • the side slope 22c is disposed to be tangent to the contact curved surface 22b, and the side slope 22c is at a steep angle to the horizontal plane, for example, an angle of 55 to 75 degrees. Therefore, it is possible to particularly effectively prevent the dirt of the sealing device 13 from entering the bearing side from entering the bearing, thereby affecting the service life and reliability of the suspension strut bearing device.
  • the sealing lip 13 and the contact curved surface 22 form a first lip angle ⁇ toward the side inclined surface 22c, and form a second lip angle ⁇ toward the non-contact inclined surface 22a, which is set according to the pump effect.
  • the size of a lip angle a and/or the second lip angle ⁇ thereby reducing the risk of external contaminants entering the bearing.
  • the first lip angle ⁇ is smaller than the second lip angle ⁇ and/or the first lip angle is smaller than 45°, so that the sealing can be better formed by the pumping effect.
  • a projection 25 extending axially toward the cover is provided between the seal region 22 of the guide ring 20 and the bearing 30, and the side bevel 22c is further The outer surface of the protruding portion 25 on the side of the sealing region is formed.
  • the spacing between the projections 25 and the cover 10 is set such that the isolation projections 25 are just not in contact with the cover 10 when the guide ring 20 is in the maximum tilt position.
  • a groove 24 is provided between the projection 25 of the guide ring 20 of the suspension strut bearing device and the bearing 30.
  • the lubricating oil of the bearing 30 can accumulate in the groove 24, whereby the lubricating oil flowing to the sealing device can be reduced.
  • the cover 10 and the guide ring 20 are snap-fitted, and the snap connection is achieved by providing the matching snap members 11, 21 on the cover 10 and the guide ring 20, respectively.
  • the snap members 11, 21 are each formed by a cover 10 and a corresponding rigid portion on the guide ring 20. Therefore, although the snap connection is detachable, it can only be completed by a high disassembly force, thereby ensuring the reliability of the connection. Further, since the corresponding snap members 11, 21 form a gap seal with each other, the sealing device 13 can be assisted to prevent dirt from entering the bearing 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne un dispositif de roulement d'appui de suspension, comportant un couvercle (10) de capot et une bague (20) de guidage capable de tourner par rapport au couvercle (10) de capot, le couvercle (10) de capot et la bague (20) de guidage formant une liaison par encliquetage détachable via un dispositif (11, 12) de liaison par encliquetage, un roulement (30) et au moins deux dispositifs (12, 13) d'étanchéité servant à assurer l'étanchéité du roulement (30) étant placés entre le couvercle (10) de capot et la bague (20) de guidage, les dispositifs (12, 13) d'étanchéité étant fixés sur le couvercle (10) de capot et formant un joint mobile avec la bague (20) de guidage, au moins un dispositif (13) d'étanchéité étant placé entre le roulement (30) et le dispositif (11, 12) de liaison par encliquetage, et la bague (20) de guidage présentant une région (22) d'étanchéité utilisée pour former un joint avec le ou les dispositifs (13) d'étanchéité à l'intérieur de celle-ci. Afin de former un meilleur joint, la région (22) d'étanchéité est une face incurvée lisse continue, et la face incurvée peut être divisée en trois parties, comprenant une face inclinée (22a) sans contact, une face (22b) d'arc de contact et une face inclinée latérale (22c), successivement de la grande à la petite suivant la distance axiale à partir du couvercle (10) de capot, au moins un dispositif (13) d'étanchéité prend appui sur la face (22b) d'arc de contact, et la face inclinée latérale (22c) est située axialement entre le ou les dispositifs (13) d'étanchéité et le roulement (30).
PCT/CN2018/071711 2018-01-08 2018-01-08 Dispositif de roulement d'appui de suspension WO2019134156A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2018/071711 WO2019134156A1 (fr) 2018-01-08 2018-01-08 Dispositif de roulement d'appui de suspension
CN201880084960.7A CN111542446B (zh) 2018-01-08 2018-01-08 悬架支柱轴承装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/071711 WO2019134156A1 (fr) 2018-01-08 2018-01-08 Dispositif de roulement d'appui de suspension

Publications (1)

Publication Number Publication Date
WO2019134156A1 true WO2019134156A1 (fr) 2019-07-11

Family

ID=67144094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/071711 WO2019134156A1 (fr) 2018-01-08 2018-01-08 Dispositif de roulement d'appui de suspension

Country Status (2)

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CN (1) CN111542446B (fr)
WO (1) WO2019134156A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011026703A1 (fr) * 2009-09-02 2011-03-10 Aktiebolaget Skf Palier de butée et suspension pour véhicule
CN102046404A (zh) * 2008-08-01 2011-05-04 Skf公司 悬挂式缓冲块及支柱装置
CN102434575A (zh) * 2010-06-16 2012-05-02 Skf公司 悬挂止推轴承装置
CN103423312A (zh) * 2012-05-04 2013-12-04 Skf公司 悬架轴承装置及其制造方法以及包括该装置的支柱
CN203906544U (zh) * 2014-05-15 2014-10-29 杭州杰瑞尔机械制造有限公司 一种深沟球轴承
DE102015209776A1 (de) * 2015-05-28 2016-12-01 Schaeffler Technologies AG & Co. KG Federbeinlager

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2865008B1 (fr) * 2004-01-13 2006-03-31 Skf Ab Dispositif de roulement de butee de suspension.
FR2921016B1 (fr) * 2007-09-19 2009-12-18 Skf Ab Dispositif de butee de suspension et jambe de force

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102046404A (zh) * 2008-08-01 2011-05-04 Skf公司 悬挂式缓冲块及支柱装置
WO2011026703A1 (fr) * 2009-09-02 2011-03-10 Aktiebolaget Skf Palier de butée et suspension pour véhicule
CN102434575A (zh) * 2010-06-16 2012-05-02 Skf公司 悬挂止推轴承装置
CN103423312A (zh) * 2012-05-04 2013-12-04 Skf公司 悬架轴承装置及其制造方法以及包括该装置的支柱
CN203906544U (zh) * 2014-05-15 2014-10-29 杭州杰瑞尔机械制造有限公司 一种深沟球轴承
DE102015209776A1 (de) * 2015-05-28 2016-12-01 Schaeffler Technologies AG & Co. KG Federbeinlager

Also Published As

Publication number Publication date
CN111542446A (zh) 2020-08-14
CN111542446B (zh) 2022-07-05

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