[go: up one dir, main page]

WO2012060133A1 - Ball joint dust cover - Google Patents

Ball joint dust cover Download PDF

Info

Publication number
WO2012060133A1
WO2012060133A1 PCT/JP2011/065067 JP2011065067W WO2012060133A1 WO 2012060133 A1 WO2012060133 A1 WO 2012060133A1 JP 2011065067 W JP2011065067 W JP 2011065067W WO 2012060133 A1 WO2012060133 A1 WO 2012060133A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust cover
diameter opening
section
ball joint
seal lip
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2011/065067
Other languages
French (fr)
Japanese (ja)
Inventor
達郎 宝泉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
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 Corp filed Critical Nok Corp
Publication of WO2012060133A1 publication Critical patent/WO2012060133A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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.
  • 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 prevention 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 as shown in FIG.
  • 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 rubber elastic material dust cover 600 is fixedly held by the snap ring 900 on the outer peripheral surface of the socket 300, and the other end small-diameter opening 150 is held by the shaft 400.
  • membrane part 700 which has connected the large diameter opening part 800 and the small diameter opening part 150 is exhibiting the drum shape which protruded outside.
  • the operation of the ball joint is mainly performed in two ways: reciprocating rotation and swinging motion of the ball stud 100.
  • the seal lip portion of the dust cover provided on the surface in contact with the shaft portion 400 of the small diameter opening 150 is separated from the shaft portion 400 of the ball stud 100. It is required not to cause the phenomenon of separation (open mouth). Therefore, the small-diameter opening 150 provided with the seal lip portion of the dust cover is reinforced with a metal ring or a resin ring, and improves the sealing performance of the dust cover lip portion.
  • Patent Document 3 a mode has been proposed in which a semicircular protrusion is provided on a part of the retainer and engaged with the side surface of the small diameter opening of the dust cover.
  • An object of the present invention is to provide a dust cover for a ball joint that does not have a problem that the seal lip portion of the dust cover is separated from the shaft portion of the ball stud and the sealing function is deteriorated even at low temperature operation.
  • a ball head formed at one end of the ball stud is held in the socket, and a shaft portion at the other end of the ball stud is fastened and fixed to a knuckle.
  • the other end small-diameter opening portion is held on the outer peripheral surface of the L-shaped retainer fitted and held on the shaft portion, and the large-diameter opening and the small-diameter opening.
  • a seal lip portion is formed on a surface of the small-diameter opening that contacts the retainer outer peripheral surface, and a notch extending from the lower surface of the small-diameter opening toward the knuckle side is provided.
  • a cylindrical holding portion that extends from the outer diameter side of the retainer toward the knuckle side so as to cover the outer periphery of the seal lip portion is provided.
  • the present invention has the following effects. According to the dust cover for a ball joint of the first aspect of the present invention, there is no problem that the seal lip portion of the dust cover is separated from the shaft portion of the ball stud and the sealing function is lowered even during low temperature operation. Furthermore, according to the dust cover for a ball joint of the invention described in claim 2, since the seal lip portion of the dust cover can maintain a good seal surface pressure even at low temperature operation, there is no problem that the sealing function is lowered.
  • the ball joint dust cover according to the present invention has a ball head 2 formed at one end of a ball stud 1 held in a socket 3.
  • the shaft portion 4 at the other end is fastened and fixed to the knuckle 5, the one end large-diameter opening 8 is fixed and held on the outer peripheral surface of the socket 3, and the other end small-diameter opening portion 15 is fitted and held on the shaft portion 4.
  • It is configured to include a substantially drum-shaped film portion 7 that is held on the outer peripheral surface of the letter-shaped retainer 6 and projects outwardly connecting the large-diameter opening 8 and the small-diameter opening 15.
  • a seal lip 151 is formed on the surface of the small-diameter opening 15 that contacts the outer peripheral surface of the retainer 6. Further, a notch 152 extending from the lower surface 152 of the small-diameter opening 15 toward the knuckle 5 side is formed, and a seal lip is formed in the notch 152 from the outer diameter side of the retainer 6 toward the knuckle 5 side.
  • a cylindrical holding portion 62 is provided that extends so as to cover the outer periphery of the portion 151.
  • seal lip portions 151 There are two seal lip portions 151, and the holding portion 62 extends to a position covering the outer periphery of the seal lip portion 151 located on the ball head 2 side (upper and lower sides in the figure). For this reason, the seal lip portion 151 located on the ball head 2 side (the upper and lower sides in the figure) is between the cylindrical fitting portion 61 and the holding portion 62 that are fitted to the shaft portion 4 of the retainer 6. It can be held in a compressed state.
  • the seal lip portion 151 of the dust cover can maintain a good seal surface pressure even during low temperature operation.
  • two seal lip portions 151 are provided.
  • one or more seal lip portions 151 may be present, and at least one seal lip portion 151 whose outer periphery is covered by the holding portion 62 may be present.
  • the depth of the notch 152 is set to a length that stops approximately in the middle of the small-diameter opening portion 15. If the depth of the notch 152 is too deep, the strength of the small-diameter open portion 15 is weakened and there is a risk of cracking. If it is too shallow, the seal lip 151 is separated from the shaft portion of the ball stud and the sealing function is deteriorated. Problems occur.
  • a dust seal 153 that is in elastic contact with the lower end surface of the knuckle 5 is formed on the upper end surface of the small-diameter opening 15.
  • the presence of the dust seal 153 can prevent water and earth and sand from entering the dust cover.
  • the dust cover is formed of various rubber-like elastic materials.
  • the large-diameter opening 8 is fixedly held on the outer peripheral surface of the socket 3 by a snap ring 9.
  • the holding portion 62 is provided with an annular protrusion 611 that protrudes to the inner peripheral side, and this protrusion 611 is provided on the outer peripheral surface of the notch 152. This is a point of engaging with the depression 152. As a result, the radial movement and the axial movement of the seal lip 151 of the dust cover can be restricted, so that a good sealing function can be exhibited over a long period of time.
  • 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)
  • Pivots And Pivotal Connections (AREA)
  • Sealing Devices (AREA)

Abstract

The purpose is to provide a ball joint dust cover that solves the problem of weakening sealing function that occurs in the seal lip section of a dust cover. To address the problem, this ball joint dust cover is structured so that: a ball head section formed on one end of a ball stud is held inside a socket; a shaft section on the other end of the ball stud is fastened and secured onto a knuckle; a large-diameter opening section on one end is held securely on the outer surface of the socket; a small-diameter opening section on the other end is held by a retainer outer circumference surface having an L-shaped cross section which is fitted and held on the shaft section; a film section, projecting outward on the outer side, and having an essentially hourglass shape, connects the large-diameter opening and the small-diameter opening; a seal lip section is formed on a surface contacting the retainer outer circumference surface of the small-diameter opening section; a cut extending from the lower surface of the small-diameter opening to the knuckle is provided; and inside the cut, a cylindrical holding section that extends from the outer-diameter-side of the retainer toward the knuckle-side and covers the outer circumference of the seal lip section is provided.

Description

ボールジョイント用ダストカバーDust cover for ball joint

　本発明は、ボールジョイント用ダストカバーに関する。
　また、本発明は、自動車懸架装置、操舵装置等に使用されるボールジョイント用ダストカバーに関する。 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.

　従来、ボールジョイント継ぎ手部の防塵、防水を目的としてダストカバーが装着されているボールジョイントとしては、図４に記載のボールジョイント用ダストカバーが知られている。（特許文献１、２） Conventionally, 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 prevention and waterproofing of the ball joint joint. (Patent Documents 1 and 2)

　この種ボールジョイント用ダストカバーのシール構造は、図４に示す様に、ボールスタッド１００の一端に形成された球頭部２００がソケット３００内に保持されている。
　そして、ボールスタッド１００の他端の軸部４００は、ナックル５００に締め付け固定されている。
　一方、ゴム状弾性材製ダストカバー６００の一端大径開口部８００が、ソケット３００の外周面にスナップリング９００により固定保持され、他端小径開口部１５０が軸部４００に保持された構成となっている。
　そして、大径開口部８００と小径開口部１５０とを連結している膜部７００全体が外側に張り出した鼓形状を呈している。 In this type of ball joint dust cover seal structure, a ball head 200 formed at one end of a ball stud 100 is held in a socket 300 as shown in FIG.
The shaft 400 at the other end of the ball stud 100 is fastened and fixed to the knuckle 500.
On the other hand, one end large-diameter opening 800 of the rubber elastic material dust cover 600 is fixedly held by the snap ring 900 on the outer peripheral surface of the socket 300, and the other end small-diameter opening 150 is held by the shaft 400. ing.
And the whole film | membrane part 700 which has connected the large diameter opening part 800 and the small diameter opening part 150 is exhibiting the drum shape which protruded outside.

　そして、この種従来のダストカバー６００は、ボールスタッド１００がソケット３００に対し傾斜した場合、ボールスタッド１００が傾斜した側に位置する圧縮変形した膜部７００の形状は、図４に示す様に変形する。
　すなわち、ボールジョイントの作動は主にボールスタッド１００の往復回転および揺動運動の二つである。
　この二つの作動において、ダストカバー６００がシール機能部品として機能する為には、小径開口部１５０の軸部４００と接する面に設けたダストカバーのシールリップ部が、ボールスタッド１００の軸部４００から離れる現象（口開き）を発生させない事が求められる。
　そこで、ダストカバーのシールリップ部が設けられている小径開口部１５０には、金属環や樹脂環で補強されており、ダストカバーリップ部のシール性向上を担っている。 In the conventional dust cover 600, when the ball stud 100 is inclined with respect to the socket 300, the shape of the compression-deformed film portion 700 positioned on the inclined side of the ball stud 100 is deformed as shown in FIG. To do.
In other words, the operation of the ball joint is mainly performed in two ways: reciprocating rotation and swinging motion of the ball stud 100.
In these two operations, in order for the dust cover 600 to function as a sealing functional part, the seal lip portion of the dust cover provided on the surface in contact with the shaft portion 400 of the small diameter opening 150 is separated from the shaft portion 400 of the ball stud 100. It is required not to cause the phenomenon of separation (open mouth).
Therefore, the small-diameter opening 150 provided with the seal lip portion of the dust cover is reinforced with a metal ring or a resin ring, and improves the sealing performance of the dust cover lip portion.

　その他に、ボールスタッド側にリテーナーを装着し、シールリップ部を密着させる事によりシール性を向上させる態様も提案されている。
　しかしながら、低温作動時においては、金属環や樹指環を使用したり、リテーナーを使用したとしても、ダストカバー自体が硬化する事により、ダストカバーのリップ部の揺動追従性が低下する。
　この結果、ダストカバーのリップ部がボールスタッドの軸部から離れ、シール機能が低下する問題を惹起する事が有る。 In addition, a mode has been proposed in which a retainer is mounted on the ball stud side and the sealing lip portion is brought into close contact so as to improve the sealing performance.
However, at the time of low temperature operation, even if a metal ring or a finger ring is used or a retainer is used, the oscillating followability of the lip portion of the dust cover is reduced due to the dust cover itself being cured.
As a result, the lip portion of the dust cover may be separated from the shaft portion of the ball stud, causing a problem that the sealing function is lowered.

　この為、リテーナーの一部に半円形の突起を設け、ダストカバーの小径開口部側面と係合させる態様が提案された。（特許文献３）
　しかし、この様な態様によっても、ダストカバーリップ部がボールスタッドの軸部から離れることを、完全には阻止できず、シール機能が低下する問題を解決できなかった。 For this reason, a mode has been proposed in which a semicircular protrusion is provided on a part of the retainer and engaged with the side surface of the small diameter opening of the dust cover. (Patent Document 3)
However, even with such an embodiment, it is impossible to completely prevent the dust cover lip portion from separating from the shaft portion of the ball stud, and the problem that the sealing function is deteriorated cannot be solved.

実開平４－３２３１３号公報Japanese Utility Model Publication No. 4-32313 特開２００４－９２７７６号公報JP 2004-92776 A 実開平２－１３８２１９号公報Japanese Utility Model Publication No. 2-138219

　本発明は、低温作動時においても、ダストカバーのシールリップ部がボールスタッドの軸部から離れ、シール機能が低下する問題が無いボールジョイント用ダストカバーを提供することを目的とする。 An object of the present invention is to provide a dust cover for a ball joint that does not have a problem that the seal lip portion of the dust cover is separated from the shaft portion of the ball stud and the sealing function is deteriorated even at low temperature operation.

　本発明に係るボールジョイント用ダストカバーは、ボールスタッドの一端に形成された球頭部がソケット内に保持され、前記ボールスタッドの他端の軸部はナックルに締め付け固定され、一端大径開口部が前記ソケットの外周面に固定保持され、他端小径開ロ部が前記軸部に嵌合保持された断面Ｌ字形状のリテーナ外周面に保持され、前記大径開口部と前記小径開口部とを連結している外側に張り出した略鼓形状の膜部を備えたゴム状弾性材製ボールジョイント用ダストカバーにおいて、
　前記小径開口部の前記リテーナ外周面と接する面には、シールリップ部を形成すると共に、前記小径開口部の下面から前記ナックル側に向かって伸びる切込を設け、前記切込内には、前記リテーナの外径部側より前記ナックル側に向かって前記シールリップ部の外周を覆う形で伸びている円筒状の保持部を設けたことを特徴とする。 In the dust cover for ball joint according to the present invention, a ball head formed at one end of the ball stud is held in the socket, and a shaft portion at the other end of the ball stud is fastened and fixed to a knuckle. Is fixedly held on the outer peripheral surface of the socket, and the other end small-diameter opening portion is held on the outer peripheral surface of the L-shaped retainer fitted and held on the shaft portion, and the large-diameter opening and the small-diameter opening In a dust cover for a ball joint made of a rubber-like elastic material provided with a substantially drum-shaped membrane portion projecting outside.
A seal lip portion is formed on a surface of the small-diameter opening that contacts the retainer outer peripheral surface, and a notch extending from the lower surface of the small-diameter opening toward the knuckle side is provided. A cylindrical holding portion that extends from the outer diameter side of the retainer toward the knuckle side so as to cover the outer periphery of the seal lip portion is provided.

　本発明は、以下に記載されるような効果を奏する。
　請求項１記載の発明のボールジョイント用ダストカバーによれば、低温作動時においても、ダストカバーのシールリップ部がボールスタッドの軸部から離れ、シール機能が低下する問題が無い。
　更に、請求項２記載の発明のボールジョイント用ダストカバーによれば、低温作動時においても、ダストカバーのシールリップ部が良好なシール面圧を維持出来る為、シール機能が低下する問題が無い。 The present invention has the following effects.
According to the dust cover for a ball joint of the first aspect of the present invention, there is no problem that the seal lip portion of the dust cover is separated from the shaft portion of the ball stud and the sealing function is lowered even during low temperature operation.
Furthermore, according to the dust cover for a ball joint of the invention described in claim 2, since the seal lip portion of the dust cover can maintain a good seal surface pressure even at low temperature operation, there is no problem that the sealing function is lowered.

　更に、請求項３記載の発明のボールジョイント用ダストカバーによれば、ダストカバーのシールリップ部の径方向及び軸方向の移動を規制出来る為、長期間に渡って良好なシール機能を発揮出来る。
　更に、請求項４記載の発明のボールジョイント用ダストカバーによれば、ダストカバーのシールリップ部のシール機能の信頼性を、より高める事が出来る。 Furthermore, according to the dust cover for a ball joint of the invention described in claim 3, since the movement of the seal lip portion of the dust cover in the radial direction and the axial direction can be restricted, a good sealing function can be exhibited over a long period of time.
Furthermore, according to the dust cover for a ball joint of the invention described in claim 4, the reliability of the sealing function of the seal lip portion of the dust cover can be further increased.

本発明に係る、ボールジョイント用ダストカバーの縦断面図。The longitudinal cross-sectional view of the dust cover for ball joints based on this invention. 図１の部分拡大図。The elements on larger scale of FIG. 本発明に係る第２の態様を図２と同様に示した図。The figure which showed the 2nd aspect which concerns on this invention similarly to FIG. 従来技術に係るボールジョイント用ダストカバーの縦断面図。The longitudinal cross-sectional view of the dust cover for ball joints based on a prior art.

　以下、本発明を実施するための形態について説明する。
　図１及び図２に示される様に、本発明に係るボールジョイント用ダストカバーの態様は、ボールスタッド１の一端に形成された球頭部２がソケット３内に保持され、このボールスタッド１の他端の軸部４はナックル５に締め付け固定され、一端大径開口部８がソケット３の外周面に固定保持され、他端小径開ロ部１５が軸部４に嵌合保持された断面Ｌ字形状のリテーナー６外周面に保持され、大径開口部８と小径開口部１５とを連結している外側に張り出した略鼓形状の膜部７を備える構成となっている。 Hereinafter, modes for carrying out the present invention will be described.
As shown in FIGS. 1 and 2, the ball joint dust cover according to the present invention has a ball head 2 formed at one end of a ball stud 1 held in a socket 3. The shaft portion 4 at the other end is fastened and fixed to the knuckle 5, the one end large-diameter opening 8 is fixed and held on the outer peripheral surface of the socket 3, and the other end small-diameter opening portion 15 is fitted and held on the shaft portion 4. It is configured to include a substantially drum-shaped film portion 7 that is held on the outer peripheral surface of the letter-shaped retainer 6 and projects outwardly connecting the large-diameter opening 8 and the small-diameter opening 15.

　また、小径開口部１５のリテーナー６外周面と接する面には、シールリップ部１５１が形成されている。
　更に、小径開口部１５の下面１５２からナックル５側に向かって伸びる切込１５２が形成されており、この切込１５２内には、リテーナー６の外径部側よりナックル５側に向かってシールリップ部１５１の外周を覆う形で伸びている円筒状の保持部６２が設けられている。 A seal lip 151 is formed on the surface of the small-diameter opening 15 that contacts the outer peripheral surface of the retainer 6.
Further, a notch 152 extending from the lower surface 152 of the small-diameter opening 15 toward the knuckle 5 side is formed, and a seal lip is formed in the notch 152 from the outer diameter side of the retainer 6 toward the knuckle 5 side. A cylindrical holding portion 62 is provided that extends so as to cover the outer periphery of the portion 151.

　このシールリップ部１５１は２本存在し、保持部６２は、球頭部２側（図上下側）に位置するシールリップ部１５１の外周を覆う位置まで伸びている。
　この為、この球頭部２側（図上下側）に位置するシールリップ部１５１は、リテーナー６の軸部４に嵌合している円筒状の嵌合部６１と保持部６２との間に、圧縮状態で保持される事が可能である。 There are two seal lip portions 151, and the holding portion 62 extends to a position covering the outer periphery of the seal lip portion 151 located on the ball head 2 side (upper and lower sides in the figure).
For this reason, the seal lip portion 151 located on the ball head 2 side (the upper and lower sides in the figure) is between the cylindrical fitting portion 61 and the holding portion 62 that are fitted to the shaft portion 4 of the retainer 6. It can be held in a compressed state.

　この結果、低温作動時においても、ダストカバーのシールリップ部１５１が、良好なシール面圧を維持出来る。
　本実施態様においては、シールリップ部１５１を２本設ける態様としているが、１本以上存在すれば良く、保持部６２により外周を覆われるシールリップ部１５１は、少なくとも１本存在すれば良い。 As a result, the seal lip portion 151 of the dust cover can maintain a good seal surface pressure even during low temperature operation.
In this embodiment, two seal lip portions 151 are provided. However, one or more seal lip portions 151 may be present, and at least one seal lip portion 151 whose outer periphery is covered by the holding portion 62 may be present.

　また、切込１５２の深さは、小径開ロ部１５の略中ほどで止まる長さとしている。
　この切込１５２の深さが深過ぎると、小径開ロ部１５の強度が弱まり、亀裂が生ずる危険性があり、浅すぎるとシールリップ部１５１がボールスタッドの軸部から離れ、シール機能が低下する問題が発生する。 Further, the depth of the notch 152 is set to a length that stops approximately in the middle of the small-diameter opening portion 15.
If the depth of the notch 152 is too deep, the strength of the small-diameter open portion 15 is weakened and there is a risk of cracking. If it is too shallow, the seal lip 151 is separated from the shaft portion of the ball stud and the sealing function is deteriorated. Problems occur.

　更に、小径開口部１５の上端面には、ナックル５の下端面と弾性接触しているダストシール１５３が形成されている。
　このダストシール１５３の存在により、水や土砂がダストカバー内に侵入することを阻止できる。
　また、ダストカバーは、各種のゴム状弾性材により成形されている。
　更に、大径開口部８は、スナップリング９によりソケット３の外周面に固定保持されている。 Further, a dust seal 153 that is in elastic contact with the lower end surface of the knuckle 5 is formed on the upper end surface of the small-diameter opening 15.
The presence of the dust seal 153 can prevent water and earth and sand from entering the dust cover.
The dust cover is formed of various rubber-like elastic materials.
Further, the large-diameter opening 8 is fixedly held on the outer peripheral surface of the socket 3 by a snap ring 9.

　ついで、本発明に係る第２の態様を図３に基づき説明する。
　図１及び図２に示した態様と相違する点は、保持部６２に、内周側に突出する環状の突起部６１１を設け、この突起部６１１を、切込１５２の外周面に設けた環状窪み部１５２と係合する構成としている点である。
　このことにより、ダストカバーのシールリップ部１５１の径方向及び軸方向の移動を規制出来る為、長期間に渡って良好なシール機能を発揮出来る。 Next, a second aspect according to the present invention will be described with reference to FIG.
The difference from the embodiment shown in FIGS. 1 and 2 is that the holding portion 62 is provided with an annular protrusion 611 that protrudes to the inner peripheral side, and this protrusion 611 is provided on the outer peripheral surface of the notch 152. This is a point of engaging with the depression 152.
As a result, the radial movement and the axial movement of the seal lip 151 of the dust cover can be restricted, so that a good sealing function can be exhibited over a long period of time.

　また、本発明は上述の発明を実施するための最良の形態に限らず本発明の要旨を逸脱することなくその他種々の構成を採り得ることはもちろんである。 Further, 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.

　自動車の懸架装置及び操舵装置等に使用されるボールジョイントに使用できる。 Can be used for ball joints used in automobile suspension systems and steering systems.

１　　ボールスタッド
２　　球頭部
３　　ソケット
４　　軸部
５　　ナックル
６　　リテーナー
７　　膜部
８　　大径開口部
９　　スナップリング
１５　小径開口部
６１　嵌合部
６２　保持部
１５１シールリップ部
１５２切込
６１１突起 DESCRIPTION OF SYMBOLS 1 Ball stud 2 Ball head 3 Socket 4 Shaft part 5 Knuckle 6 Retainer 7 Film part 8 Large diameter opening part 9 Snap ring 15 Small diameter opening part 61 Fitting part 62 Holding part 151 Seal lip part 152 Notch 611 protrusion

Claims (4)

　ボールスタッド（１）の一端に形成された球頭部（２）がソケット（３）内に保持され、前記ボールスタッド（１）の他端の軸部（４）はナックル（５）に締め付け固定され、一端大径開口部（８）が前記ソケット（３）の外周面に固定保持され、他端小径開ロ部（１５）が前記軸部（４）に嵌合保持された断面Ｌ字形状のリテーナ（６）外周面に保持され、前記大径開口部（８）と前記小径開口部（１５）とを連結している外側に張り出した略鼓形状の膜部（７）を備えたゴム状弾性材製ボールジョイント用ダストカバーにおいて、
　前記小径開口部（１５）の前記リテーナ（６）外周面と接する面には、シールリップ部（１５１）を形成すると共に、前記小径開口部（１５）の下面（１５２）から前記ナックル（５）側に向かって伸びる切込（１５２）を設け、前記切込（１５２）内には、前記リテーナ（６）の外径部側より前記ナックル（５）側に向かって前記シールリップ部（１５１）の外周を覆う形で伸びている円筒状の保持部（６２）を設けたことを特徴とするボールジョイント用ダストカバー。 The ball head (2) formed at one end of the ball stud (1) is held in the socket (3), and the shaft (4) at the other end of the ball stud (1) is fastened and fixed to the knuckle (5). And an L-shaped cross section in which one end large-diameter opening (8) is fixedly held on the outer peripheral surface of the socket (3), and the other end small-diameter opening (15) is fitted and held on the shaft (4). The retainer (6) is a rubber having a substantially drum-shaped film portion (7) that is held on the outer peripheral surface and projects outwardly connecting the large-diameter opening (8) and the small-diameter opening (15). In the dust cover for ball joint made of elastic elastic material,
A seal lip portion (151) is formed on a surface of the small diameter opening portion (15) that contacts the outer peripheral surface of the retainer (6), and the knuckle (5) is formed from the lower surface (152) of the small diameter opening portion (15). A notch (152) extending toward the side is provided, and the seal lip (151) is provided in the notch (152) from the outer diameter side of the retainer (6) toward the knuckle (5). A dust cover for a ball joint, characterized in that a cylindrical holding portion (62) extending so as to cover the outer periphery of the ball joint is provided. 　前記シールリップ部（１５１）は、前記リテーナ（６）の前記軸部（４）に嵌合している円筒状の嵌合部（６１）と前記保持部（６２）との間に、圧縮状態で保持されていることを特徴とする請求項１記載のボールジョイント用ダストカバー。 The seal lip portion (151) is compressed between a cylindrical fitting portion (61) fitted to the shaft portion (4) of the retainer (6) and the holding portion (62). The dust cover for a ball joint according to claim 1, wherein the dust cover is held by 　前記保持部（６２）には、前記小径開口部（１５）側と係合する突起部（６１１）が設けられていることを特徴とする請求項１または２記載のボールジョイント用ダストカバー。 The ball joint dust cover according to claim 1 or 2, wherein the holding portion (62) is provided with a protrusion (611) that engages with the small-diameter opening (15) side. 　前記シールリップ部（１５１）は、複数本存在し、少なくとも前記保持部（６２）が、最も前記球頭部（２）側に位置する前記シールリップ部（１５１）の外周を覆う位置まで伸びていることを特徴とする請求項１～３のいずれか一項に記載のボールジョイント用ダストカバー。 There are a plurality of seal lip portions (151), and at least the holding portion (62) extends to a position covering the outer periphery of the seal lip portion (151) located closest to the ball head (2) side. The dust cover for a ball joint according to any one of claims 1 to 3, wherein the dust cover is a ball joint dust cover.
PCT/JP2011/065067 2010-11-04 2011-06-30 Ball joint dust cover Ceased WO2012060133A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010246990A JP2012097855A (en) 2010-11-04 2010-11-04 Dust cover for ball joint
JP2010-246990 2010-11-04

Publications (1)

Publication Number Publication Date
WO2012060133A1 true WO2012060133A1 (en) 2012-05-10

Family

ID=46024255

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/065067 Ceased WO2012060133A1 (en) 2010-11-04 2011-06-30 Ball joint dust cover

Country Status (2)

Country Link
JP (1) JP2012097855A (en)
WO (1) WO2012060133A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5936064B2 (en) * 2012-09-27 2016-06-15 Nok株式会社 Dust cover for ball joint
JP2014211182A (en) * 2013-04-18 2014-11-13 Nok株式会社 Dust cover for ball joint
JP2019132332A (en) * 2018-01-31 2019-08-08 Nok株式会社 Dust cover

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61175667U (en) * 1985-04-22 1986-11-01
JPS62174115U (en) * 1986-04-25 1987-11-05
JPH02138219U (en) * 1989-04-24 1990-11-19
JPH03121212U (en) * 1990-03-27 1991-12-12
JPH03123161U (en) * 1990-03-28 1991-12-16
DE19921952A1 (en) * 1999-05-12 2000-11-30 Zf Lemfoerder Metallwaren Ag Ball joint
DE102008043248A1 (en) * 2008-10-29 2010-05-06 Zf Friedrichshafen Ag Flange ring for use in ball joint of motor vehicle, has ring surface, where ring is formed as component of static sealing between pin and connection component, so that edge section of sleeve gasket is tightly accommodated in ring

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61175667U (en) * 1985-04-22 1986-11-01
JPS62174115U (en) * 1986-04-25 1987-11-05
JPH02138219U (en) * 1989-04-24 1990-11-19
JPH03121212U (en) * 1990-03-27 1991-12-12
JPH03123161U (en) * 1990-03-28 1991-12-16
DE19921952A1 (en) * 1999-05-12 2000-11-30 Zf Lemfoerder Metallwaren Ag Ball joint
DE102008043248A1 (en) * 2008-10-29 2010-05-06 Zf Friedrichshafen Ag Flange ring for use in ball joint of motor vehicle, has ring surface, where ring is formed as component of static sealing between pin and connection component, so that edge section of sleeve gasket is tightly accommodated in ring

Also Published As

Publication number Publication date
JP2012097855A (en) 2012-05-24

Similar Documents

Publication Publication Date Title
JP5839314B1 (en) Dust cover for ball joint
JP6025024B2 (en) Dust cover for ball joint
JP2011085257A (en) Dust cover for ball joint
JP6195226B2 (en) Dust cover for ball joint
JP5057219B2 (en) Dust cover for ball joint
CN108138835A (en) Dust cover
JP6150117B2 (en) Dust cover for ball joint
WO2012060133A1 (en) Ball joint dust cover
JP5900790B2 (en) Dust cover for ball joint
JP2011058518A (en) Ball-joint dust cover
JP5533592B2 (en) Dust cover for ball joint
JP2013160327A (en) Dust cover for ball joint
EP2937581B1 (en) Ball joint dust cover
JP2014202288A (en) Dust cover for ball joint
JP4600649B2 (en) sleeve
JP2011099533A (en) Dust cover for ball joint
WO2013094289A1 (en) Dust cover for ball joint
JP6394226B2 (en) Sealing device
JP2013160326A (en) Dust cover for ball joint
JP5641315B2 (en) Dust cover for ball joint
JP2011106478A (en) Dust cover for ball joint
JP2011106477A (en) Dust cover for ball joint
JP2011099535A (en) Dust cover for ball joint
JP2012177448A (en) Dust cover for ball joint
WO2013038886A1 (en) Dust cover for ball joint

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11837786

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11837786

Country of ref document: EP

Kind code of ref document: A1