WO2011033867A1 - Cache-poussiere pour joints a rotule - Google Patents

Cache-poussiere pour joints a rotule Download PDF

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Publication number
WO2011033867A1
WO2011033867A1 PCT/JP2010/062876 JP2010062876W WO2011033867A1 WO 2011033867 A1 WO2011033867 A1 WO 2011033867A1 JP 2010062876 W JP2010062876 W JP 2010062876W WO 2011033867 A1 WO2011033867 A1 WO 2011033867A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust cover
peripheral surface
shaft
diameter opening
ball
Prior art date
Application number
PCT/JP2010/062876
Other languages
English (en)
Japanese (ja)
Inventor
信二 阿部
Original Assignee
Nok株式会社
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 Nok株式会社 filed Critical Nok株式会社
Publication of WO2011033867A1 publication Critical patent/WO2011033867A1/fr

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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0666—Sealing means between the socket and the inner member shaft
    • F16C11/0671—Sealing means between the socket and the inner member shaft allowing operative relative movement of joint parts due to flexing of the sealing means
    • 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
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • F16C11/0623—Construction or details of the socket member
    • F16C11/0628—Construction or details of the socket member with linings

Definitions

  • the present invention relates to a dust cover for a ball joint.
  • the present invention also relates to a ball joint dust cover used for an automobile suspension device, a steering device, and the like.
  • Patent Document 1 a ball joint dust cover shown in FIG. 4 is known as a ball joint to which a dust cover is attached for the purpose of dust-proofing and waterproofing of the ball joint joint.
  • a ball head 200 formed at one end of a ball stud 100 is held in a socket 300.
  • the shaft 400 at the other end of the ball stud 100 is fastened and fixed to the knuckle 500.
  • one end large-diameter opening 800 of the dust cover 600 made of rubber-like elastic material is fixed and held on the outer peripheral surface of the socket 300 by an annular holding ring 700, and the other end small-diameter opening 150 is held on the shaft 400. It has become.
  • a small-diameter opening 150 of the conventional dust cover 600 is formed with a dust lip 160 that is pressed against the lower surface of the knuckle 500 and prevents dust from entering the dust cover 600.
  • a reinforcing ring 900 made of a metal material is embedded in the small diameter opening 150 of the dust cover 600.
  • the reinforcing ring 900 itself does not have an elastic force that presses the inner peripheral surface of the small-diameter opening 150 against the outer peripheral surface of the handle 400, the elasticity of the small-diameter opening 150 is accompanied by permanent deformation due to low temperature or aging. Is damaged, causing a problem that the sealing performance between the inner peripheral surface of the small-diameter opening 150 and the outer peripheral surface of the shaft 400 is lowered.
  • a mode is proposed in which a metal-made elastic ring that presses the inner peripheral surface of the small-diameter opening against the outer peripheral surface of the shaft is arranged on the outer peripheral surface of the small-diameter opening. It was. However, not only is it time and effort required to fit the elastic ring, but there has also been a problem that the elastic ring falls off or rusts. Moreover, since it is an elastic ring, the holding force which hold
  • An object of the present invention is to provide a ball joint dust cover capable of maintaining good sealing performance between the surface and the outer peripheral surface of the shaft.
  • the ball head formed at one end of the ball stud is held in the socket, the shaft at the other end of the ball stud is fastened and fixed to the knuckle, and the large-diameter opening is at the one end.
  • a dust cover for a ball joint made of rubber-like elastic material which is fixedly held by an annular holding ring on the outer peripheral surface of the socket and the other end small-diameter opening is held by the shaft, the inner peripheral surface of the small-diameter opening is formed in the small-diameter opening A seal lip extending toward the spherical head side along the outer peripheral surface of the shaft is provided on the side.
  • the present invention has the following effects. According to the dust cover for a ball joint of the first aspect of the invention, even if the dust cover is deformed as the ball stud shaft swings and the internal pressure in the dust cover rises, the internal pressure Since it acts as an action to press against the outer peripheral surface of the shaft of the stud, it is possible to maintain good sealing performance between the inner peripheral surface of the small diameter opening and the outer peripheral surface of the shaft.
  • the dust cover for a ball joint of the invention described in claim 4 even if the dust cover is deformed due to the swinging motion of the shaft of the ball stud, the influence on the seal lip can be minimized. Furthermore, according to the dust cover for a ball joint of the invention described in claim 5, even if the dust cover is deformed due to the swinging motion of the shaft of the ball stud, the influence on the seal lip can be surely suppressed.
  • the first aspect of the dust cover 6 for ball joint made of rubber-like elastic material according to the present invention is such that the ball head 2 formed at one end of the ball stud 1 has a socket 3.
  • the other end of the ball stud 1 is fastened and fixed to a knuckle 5, and one end large-diameter opening 8 is fixed and held on the outer peripheral surface of the socket 3 by an annular holding ring 7, and the other end small-diameter opening
  • the part 15 is configured to be held by the shaft 4.
  • the annular retaining ring 7 may be a metal ring embedded in the large-diameter opening 8, and a ring that can securely fit and hold the large-diameter opening 8 on the outer peripheral surface of the socket 3 is selectively used. .
  • a reinforcing ring 9 made of a metal material and having an L-shaped cross section is embedded in the small diameter opening 15, and a seal lip extending along the outer peripheral surface of the shaft 4 on the inner peripheral surface 151 side of the small diameter opening 15. 10 is provided.
  • the seal lip 10 extends toward the ball head 2 side, and a gap X exists between the outer peripheral surface of the seal lip 10 and the inner peripheral surface 151 of the small-diameter opening 15.
  • the internal pressure causes the seal lip 10 to move to the outer peripheral surface of the shaft 4 of the ball stud 1. Since it acts as a pressing action, a good sealing property between the seal lip 10 and the outer peripheral surface of the shaft 4 can be maintained. Further, since the seal lip 10 is separated from the small-diameter opening 15 by the gap X, the seal lip 10 is less affected by film deformation of the dust cover 6, and as a result, the inner peripheral surface of the small-diameter opening 15 and the shaft 4 Good sealing performance with the outer peripheral surface can be maintained.
  • annular protrusion 13 that is in contact with the shaft 4 is provided on the inner peripheral side in the vicinity of the base portion 14 of the seal lip 10. Compared with the seal lip 10, the annular protrusion 13 is in wide contact with the shaft 4 in the vicinity of the base portion 14 of the seal lip 10, so that the seal lip 10 is less susceptible to the film deformation of the dust cover 6. .
  • the presence of the reinforcing ring 9 can surely suppress the influence on the seal lip 10 even if the dust cover 6 is deformed as the shaft 4 of the ball stud 1 swings.
  • the material of the dust cover 6 is appropriately selected from a rubber-like elastic material such as chloroprene and a thermoplastic elastomer such as a polyester-based elastomer and a thermoplastic polyurethane.
  • a spring means 11 in the form of a coil spring for pressing the seal lip 10 toward the outer peripheral surface of the shaft 4 is embedded at the front end side of the seal lip 10.
  • the spring means 11 is not limited to a coil spring shape, but may be a spring (circlip) having a notch in one circumferential direction, and may be provided in a form exposed on the outer peripheral surface of the seal lip 10, In consideration of the handling property and the problem of rusting of the spring means 11, the shape embedded in the seal lip 10 is preferable.
  • the small-diameter opening 15 is provided with a dust lip 12 that is in elastic contact with the knuckle 5. For this reason, it is possible to prevent dust from entering the dust cover 6 from the outside.
  • the second aspect of the ball joint dust cover 6 made of rubber-like elastic material according to the present invention is different from the first aspect in that the reinforcing ring 9 is not present. .
  • This second mode is used where the impact on the seal lip 10 is not great even if the dust cover 6 is deformed as the shaft 4 of the ball stud 1 swings. That is, it is suitable for a ball joint in which the swinging motion of the shaft 4 of the ball stud 1 is not so intense. Since the reinforcing ring is not present, the manufacturing cost can be kept low, but the significance of the annular protrusion 13 is greater than that of the first aspect.
  • the dust cover 6 is filled with grease.
  • the present invention is not limited to the best mode for carrying out the invention described above, and various other configurations can be adopted without departing from the gist of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

L'invention concerne un cache-poussière pour joint à rotule; même si le cache-poussière se déforme en association avec l'oscillation de l'arbre d'un pivot sphérique et la pression interne à l'intérieur du cache-poussière augmente, il est possible de maintenir une propriété d'étanchéité excellente entre la surface périphérique interne d'une ouverture de faible diamètre et la surface périphérique externe de l'arbre. Dans le cache-poussière d'un joint à rotule, composé d'un matériau élastique de type caoutchouc, une partie tête de rotule formée à une extrémité du pivot sphérique est retenue à l'intérieur d'une douille, l'autre extrémité du pivot sphérique étant fixée et assurée à un joint d'articulation. Une ouverture de grand diamètre formée à une extrémité du cache-poussière est fixée à la surface périphérique externe de la douille à l'aide d'un anneau de retenue, et une ouverture de faible diamètre formée à l'autre extrémité du cache-poussière est retenue par l'arbre. Une lèvre de joint qui se prolonge le long de la surface périphérique externe de l'arbre et en direction de la partie tête de rotule est posée sur la surface périphérique interne de l'ouverture de faible diamètre.
PCT/JP2010/062876 2009-09-15 2010-07-30 Cache-poussiere pour joints a rotule WO2011033867A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2009212654 2009-09-15
JP2009-212654 2009-09-15
JP2010-084800 2010-04-01
JP2010084800A JP2011085257A (ja) 2009-09-15 2010-04-01 ボールジョイント用ダストカバー

Publications (1)

Publication Number Publication Date
WO2011033867A1 true WO2011033867A1 (fr) 2011-03-24

Family

ID=43758480

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/062876 WO2011033867A1 (fr) 2009-09-15 2010-07-30 Cache-poussiere pour joints a rotule

Country Status (2)

Country Link
JP (1) JP2011085257A (fr)
WO (1) WO2011033867A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2657552A2 (fr) 2012-04-25 2013-10-30 Jtekt Corporation Joint sphérique
CN103890418A (zh) * 2011-11-07 2014-06-25 Nok株式会社 球窝接头用防尘罩
CN106460915A (zh) * 2014-06-06 2017-02-22 Nok株式会社 球窝接头用防尘罩
WO2017154672A1 (fr) * 2016-03-10 2017-09-14 Nok株式会社 Capot anti-poussière et structure d'étanchéité
CN108138835A (zh) * 2015-10-05 2018-06-08 Nok株式会社 防尘罩
CN111220896A (zh) * 2019-11-28 2020-06-02 深圳市凯合达智能设备有限公司 一种具有防尘功能的集成电路测试仪器
JP2021021420A (ja) * 2019-07-25 2021-02-18 Ｔｈｋリズム株式会社 ダストカバー

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014092192A (ja) * 2012-11-01 2014-05-19 Nok Corp ボールジョイント用ダストカバー
JP2016008629A (ja) * 2014-06-23 2016-01-18 Nok株式会社 ボールジョイント用ダストカバー

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61198726U (fr) * 1985-06-03 1986-12-12
JPH0432313U (fr) * 1990-07-13 1992-03-16
JPH0741052U (ja) * 1993-12-24 1995-07-21 エヌオーケー株式会社 ボールジョイント用ダストカバー
JP2004003663A (ja) * 2002-05-28 2004-01-08 Trw Automotive Us Llc ボールジョイントシール
WO2006098124A1 (fr) * 2005-03-15 2006-09-21 Thk Co., Ltd. Articulation sphérique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61198726U (fr) * 1985-06-03 1986-12-12
JPH0432313U (fr) * 1990-07-13 1992-03-16
JPH0741052U (ja) * 1993-12-24 1995-07-21 エヌオーケー株式会社 ボールジョイント用ダストカバー
JP2004003663A (ja) * 2002-05-28 2004-01-08 Trw Automotive Us Llc ボールジョイントシール
WO2006098124A1 (fr) * 2005-03-15 2006-09-21 Thk Co., Ltd. Articulation sphérique

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103890418A (zh) * 2011-11-07 2014-06-25 Nok株式会社 球窝接头用防尘罩
CN103890418B (zh) * 2011-11-07 2017-03-22 Nok株式会社 球窝接头用防尘罩
EP2657552A2 (fr) 2012-04-25 2013-10-30 Jtekt Corporation Joint sphérique
CN106460915A (zh) * 2014-06-06 2017-02-22 Nok株式会社 球窝接头用防尘罩
CN108138835A (zh) * 2015-10-05 2018-06-08 Nok株式会社 防尘罩
CN108138835B (zh) * 2015-10-05 2020-06-30 Nok株式会社 防尘罩
WO2017154672A1 (fr) * 2016-03-10 2017-09-14 Nok株式会社 Capot anti-poussière et structure d'étanchéité
JP2021021420A (ja) * 2019-07-25 2021-02-18 Ｔｈｋリズム株式会社 ダストカバー
JP7366622B2 (ja) 2019-07-25 2023-10-23 興国インテック株式会社 ダストカバー
CN111220896A (zh) * 2019-11-28 2020-06-02 深圳市凯合达智能设备有限公司 一种具有防尘功能的集成电路测试仪器

Also Published As

Publication number Publication date
JP2011085257A (ja) 2011-04-28

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