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WO2017018169A1 - Capuchon anti-poussière pour joint à rotule - Google Patents

Capuchon anti-poussière pour joint à rotule Download PDF

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Publication number
WO2017018169A1
WO2017018169A1 PCT/JP2016/070274 JP2016070274W WO2017018169A1 WO 2017018169 A1 WO2017018169 A1 WO 2017018169A1 JP 2016070274 W JP2016070274 W JP 2016070274W WO 2017018169 A1 WO2017018169 A1 WO 2017018169A1
Authority
WO
WIPO (PCT)
Prior art keywords
stud
dust cover
ball joint
mounting portion
annular plate
Prior art date
Application number
PCT/JP2016/070274
Other languages
English (en)
Japanese (ja)
Inventor
卓麻 廣田
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
Priority to JP2016564650A priority Critical patent/JP6735678B2/ja
Publication of WO2017018169A1 publication Critical patent/WO2017018169A1/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
    • F16C11/0695—Mounting of ball-joints, e.g. fixing them to a connecting rod
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/50—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
    • F16J15/52—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall by means of sealing bellows or diaphragms
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows

Definitions

  • the present invention relates to a dust cover for a ball joint, and more particularly to a dust cover for a ball joint that can maintain a favorable sealing property even when used for a pinch bolt type ball joint.
  • ball joints are used in automobile suspension systems and steering systems.
  • the ball joint is internally filled with grease for smooth movement, and is usually covered with a dust cover in order to prevent the outflow of the ball joint and to prevent water and dust from entering from the outside.
  • ⁇ Ball joints include tapered ball joints and pinch bolt ball joints depending on the fastening method of the knuckle and stud.
  • the tapered ball joint determines the position of the knuckle 200 at a position where the tapered outer peripheral surface 100 a of the stud 100 and the tapered inner peripheral surface 200 a of the knuckle 200 overlap each other.
  • one end surface on the small diameter side of the dust cover through which the stud is inserted has a dust lip, and the dust lip is in close contact with the lower surface of the knuckle so as to seal between the knuckles. It has become. Therefore, the seal part by the dust cover is formed from the outer peripheral surface 100a of the stud 100 to the lower end surface 200b of the knuckle 200 as indicated by reference numerals S1 and S2 in FIG.
  • the pinch bolt ball joint has a structure in which a knuckle 200 is fastened to the stud 100 with a bolt 300, and a slit groove 201 is formed in the knuckle 200. Has been.
  • the seal part by the dust cover is formed only on the outer peripheral surface 100a of the stud 100, as indicated by the symbol S in FIG. For this reason, it has a structure in which foreign matter such as mud from the slit groove 201 and rust powder of the knuckle 200 easily enters. When such a foreign substance enters, wear of the seal lip portion proceeds due to the accumulated foreign substance, and the sealing performance is easily impaired.
  • annular plate also referred to as a washer, ferrule, etc.
  • Patent Document 1 an annular plate having an insertion hole through which the stud is inserted is sandwiched between the knuckle and the dust cover so as to suppress entry of foreign matter
  • FIG. 10 shows a mounting structure of a dust cover stud mounting portion 500 provided with a conventional general annular plate 400.
  • the annular plate 400 is formed in a ring shape having an insertion hole 400a through which the stud 100 is inserted in the center.
  • the diameter of the insertion hole 400 a is formed slightly larger than the outer diameter of the stud 100. For this reason, it is not possible to completely prevent foreign matter D such as mud and rust powder from the slit groove 201 of the knuckle 200 from entering the upper end surface 500a of the stud mounting portion 500 through the insertion hole 400a.
  • the foreign matter D enters the narrow space 600 formed by the insertion hole 400a of the annular plate 400, the outer peripheral surface 100a of the stud 100, and the upper end surface 500a of the stud mounting portion 500.
  • this narrow space 600 there is no escape place, and the foreign matter D continues to accumulate on the spot, so that the progress of wear caused by the foreign matter D cannot be completely suppressed. For this reason, even if the annular plate 400 is provided, only a slight life extension effect is obtained.
  • the present invention can suppress the progress of wear even if foreign matter enters the upper end surface of the stud mounting portion from the gap between the outer peripheral surface of the stud and the insertion hole of the annular plate, and can ensure the sealing performance for a long period of time. It is an object to provide a dust cover for a ball joint.
  • the dust cover In the dust cover attached to the ball joint with the knuckle attached to the end of the stud, The dust cover includes an annular plate interposed between the stud mounting portion through which the stud is inserted and the knuckle, and a reinforcement ring is embedded in the stud mounting portion.
  • the reinforcing ring is integrally provided with a protruding portion that protrudes from the upper end surface of the stud mounting portion toward the annular plate, thereby forming a space portion between the upper end surface of the stud mounting portion and the annular plate. Dust cover for ball joints.
  • the protrusion is formed in an annular shape over the circumferential direction of the reinforcing ring, 2.
  • the dust cover for a ball joint according to claim 1 wherein an annular dust lip that contacts the annular plate is formed on an outer peripheral side of the stud mounting portion. 3. A plurality of the protruding portions are formed at intervals over the circumferential direction of the reinforcing ring, 2.
  • a dust cover for a ball joint can be provided.
  • the dust cover for a ball joint according to the present invention can be suitably used for a pinch bolt ball joint.
  • Sectional drawing which shows one Embodiment of the dust cover for ball joints which concerns on this invention
  • Sectional drawing which shows one Embodiment of the pinch bolt ball joint which shows the state which mounted
  • FIG. 2 is an enlarged cross-sectional view showing a mounting structure between the dust cover and the pinch bolt ball joint stud shown in FIG.
  • the perspective view which cuts off and shows one Embodiment of the reinforcement ring embed
  • the expanded sectional view which shows the other aspect of the stud mounting part of the dust cover for ball joints based on this invention
  • the perspective view which shows other embodiments of the reinforcement ring embed
  • FIG. 6 is an enlarged cross-sectional view of the stud mounting portion in which the reinforcing ring shown in FIG. 6 is embedded.
  • Side view of main part of tapered ball joint (A) The principal part top view of a pinch bolt ball joint, (b) is the principal part side view of a pinch bolt ball joint.
  • FIG. 1 is a sectional view showing a ball joint dust cover according to a first embodiment of the present invention
  • FIG. 2 shows an embodiment of a pinch bolt ball joint showing a state in which the dust cover shown in FIG. 1 is mounted.
  • 3 is an enlarged cross-sectional view showing a structure for attaching the dust cover and the stud of the pinch bolt ball joint shown in FIG. 2
  • FIG. 4 is a perspective view showing a part of the reinforcing ring embedded in the cover body.
  • the dust cover A is composed of a cover body 1 and an annular plate 6.
  • the cover body 1 is formed in a cup shape by an elastic material such as a rubber-like elastic material such as chloroprene, or a thermoplastic elastomer such as a polyester-based elastomer or a thermoplastic polyurethane.
  • the annular plate 6 is a hard synthetic resin or metal ring member having an insertion hole 61 through which the stud 7 of the ball joint B is inserted at the center.
  • the stud mounting portion 2 is opened to a small diameter so that the stud 7 of the ball joint B is inserted and slidably mounted on the outer peripheral surface 71 thereof.
  • a plurality of seal lip portions 21 are formed on the inner peripheral surface of the stud mounting portion 2.
  • the socket mounting part 3 is fixed to the socket 8 of the ball joint B in a fixed position by opening with a larger diameter than the stud mounting part 2.
  • the socket 8 is a member that rotatably holds the ball head 72 of the stud 7.
  • a hard synthetic resin or metal reinforcing ring 4 is embedded in the stud mounting portion 2.
  • the reinforcing ring 4 is integrally formed with an annular protruding portion 42 that protrudes in the axial direction over the entire circumference of the reinforcing ring body 41 on the outer peripheral edge of the upper surface of the annular reinforcing ring body 41. ing. And the reinforcement ring 4 is embed
  • the dust cover A is press-fitted and fitted so that the lower end surface of the socket mounting portion 3 of the cover body 1 is abutted with a positioning step portion 81 formed at the upper end portion of the socket 8 of the ball joint B.
  • the stud 7 is inserted into the stud mounting portion 2, and the seal lip portion 21 is mounted in close contact with the outer peripheral surface 71 of the stud 7.
  • the stud 7 is inserted through the insertion hole 61 of the annular plate 6, and the annular plate 6 is placed on the stud mounting portion 2 side of the cover body 1.
  • the space portion 5 including a gap corresponding to the height of the projecting portion 42 between the annular plate 6 and the upper end surface 22 of the stud mounting portion 2. Is formed.
  • a knuckle 9 having a slit groove 91 is attached to the end of the stud 7 protruding from the cover body 1 and the annular plate 6 and fastened with a bolt 10 so that the periphery of the stud 7 is covered with the socket 8.
  • a dust cover A is attached to the knuckle 9.
  • the inner diameter of the insertion hole 61 of the annular plate 6 is slightly larger than the outer diameter of the stud 7, foreign matter such as mud and rust powder from the slit 91 of the knuckle 9 passes through the insertion hole 61.
  • the upper end surface 22 of the mounting portion 2 may enter.
  • the space portion 5 is formed on the upper end surface 22 of the stud mounting portion 2, the infiltrated foreign matter does not accumulate near the seal lip portion 21 of the stud mounting portion 2, and also in the space portion 5. Infiltrate. As a result, the amount of foreign matter deposited in the vicinity of the seal lip 21 is greatly reduced.
  • the projecting portion 42 for securing the space portion 5 is formed by the reinforcing ring 4, it is difficult to generate wear and settling due to sliding, and the space portion 5 can be secured for a long period of time.
  • annular dust strip 23 that contacts the annular plate 6 on the outer peripheral side of the stud mounting portion 2 of the cover body 1.
  • the upper end surface 22 of the stud mounting portion 2 preferably has a tapered surface 24 inclined downward in the radial direction from the inner peripheral edge.
  • the protruding portion 42 of the reinforcing ring 4 embedded in the stud mounting portion 2 is not limited to being formed in an annular shape over the entire circumference of the reinforcing ring 4, but in the circumferential direction of the reinforcing ring 4 as shown in FIG. 6. A plurality of them may be formed at intervals.
  • the elastic material of the stud mounting portion 2 is not provided on the outer peripheral side of the protruding portion 42 in the reinforcing ring 4. For this reason, the discharge groove
  • the upper end surface 22 of the stud mounting portion 2 has a tapered surface 24 as shown in FIG. Accordingly, the foreign matter that has entered the space 5 can be discharged to the outside more quickly by the discharge groove 43.
  • the dust cover A according to the present invention does not require any changes to the stud 7 and the socket 8 of the ball joint B, it can be used as it is for an existing ball joint.
  • the pinch bolt ball joint using the knuckle 9 having the slot 91 is described as the ball joint B to which the dust cover A according to the present invention is applied.
  • the dust cover according to the present invention is described.
  • A can be similarly applied to a tapered ball joint as shown in FIG.

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 a pour objet de fournir un capuchon anti-poussière pour joint à rotule qui permet de prévenir la progression de l'usure y compris en cas d'infiltration d'une substance étrangère sur une face extrémité supérieure d'une partie montage de goujon par un interstice entre une face périphérique externe d'un goujon et un orifice d'insertion d'une plaque circulaire, et qui permet d'assurer des propriétés de scellement sur le long terme. Plus précisément, l'invention concerne un capuchon anti-poussière (A) qui est monté sur un joint à rotule (B) dans lequel un joint d'articulation (9) est installé sur une partie extrémité du goujon (7). Ce capuchon anti-poussière (A) est équipé de la plaque circulaire (6) s'intercalant entre la partie montage de goujon (2) dans laquelle est inséré le goujon (7), et le joint d'articulation (9), et simultanément un cercle de renforcement (4) est noyé dans la partie montage de goujon (2). Ce cercle de renforcement (4) est équipé d'un seul tenant d'une partie saillie formant une saillie de la face extrémité supérieure de la partie montage de goujon (2) vers la plaque circulaire (6), et qui forme une partie espace (5) entre la face extrémité supérieure de la partie montage de goujon (2) et la plaque circulaire (6).
PCT/JP2016/070274 2015-07-27 2016-07-08 Capuchon anti-poussière pour joint à rotule WO2017018169A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016564650A JP6735678B2 (ja) 2015-07-27 2016-07-08 ボールジョイント用ダストカバー

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-147440 2015-07-27
JP2015147440 2015-07-27

Publications (1)

Publication Number Publication Date
WO2017018169A1 true WO2017018169A1 (fr) 2017-02-02

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ID=57884593

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Application Number Title Priority Date Filing Date
PCT/JP2016/070274 WO2017018169A1 (fr) 2015-07-27 2016-07-08 Capuchon anti-poussière pour joint à rotule

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Country Link
JP (1) JP6735678B2 (fr)
WO (1) WO2017018169A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210170218A1 (en) * 2018-04-11 2021-06-10 Gym-In-A-Box Llc Versatile universal gym
US20230102909A1 (en) * 2020-04-22 2023-03-30 Nok Corporation Ball joint and dust cover
WO2023162678A1 (fr) 2022-02-24 2023-08-31 Nok株式会社 Structure d'étanchéité de joint à rotule et procédé de montage de bague de virole
USD1059511S1 (en) 2020-10-09 2025-01-28 Gym-In-A-Box Llc Frame for a versatile universal gym

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839214Y2 (ja) * 1978-05-16 1983-09-05 トヨタ自動車株式会社 サスペンシヨンボ−ルジヨイント取付部構造
JPS6113067U (ja) * 1984-06-28 1986-01-25 エヌオーケー株式会社 ダストカバ
JP2006300204A (ja) * 2005-04-20 2006-11-02 Otics Corp ボールジョイント
JP2007278352A (ja) * 2006-04-04 2007-10-25 Nok Corp ボールジョイント用ダストカバー
JP2009014064A (ja) * 2007-07-03 2009-01-22 Nok Corp ボールジョイント用ダストカバー

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839214Y2 (ja) * 1978-05-16 1983-09-05 トヨタ自動車株式会社 サスペンシヨンボ−ルジヨイント取付部構造
JPS6113067U (ja) * 1984-06-28 1986-01-25 エヌオーケー株式会社 ダストカバ
JP2006300204A (ja) * 2005-04-20 2006-11-02 Otics Corp ボールジョイント
JP2007278352A (ja) * 2006-04-04 2007-10-25 Nok Corp ボールジョイント用ダストカバー
JP2009014064A (ja) * 2007-07-03 2009-01-22 Nok Corp ボールジョイント用ダストカバー

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210170218A1 (en) * 2018-04-11 2021-06-10 Gym-In-A-Box Llc Versatile universal gym
US12280289B2 (en) * 2018-04-11 2025-04-22 Gym-In-A-Box Llc Versatile universal gym
US20230102909A1 (en) * 2020-04-22 2023-03-30 Nok Corporation Ball joint and dust cover
USD1059511S1 (en) 2020-10-09 2025-01-28 Gym-In-A-Box Llc Frame for a versatile universal gym
WO2023162678A1 (fr) 2022-02-24 2023-08-31 Nok株式会社 Structure d'étanchéité de joint à rotule et procédé de montage de bague de virole

Also Published As

Publication number Publication date
JP6735678B2 (ja) 2020-08-05
JPWO2017018169A1 (ja) 2018-05-17

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