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Patent Searching and Data


Title:
BALL JOINT
Document Type and Number:
WIPO Patent Application WO/2019/058830
Kind Code:
A1
Abstract:
Provided is a ball joint that makes it possible to maintain long-term, stable sealing, even if a gap is provided between joined members. A ball joint: in which a shaft part 120 of a ball stud has formed therein an annular recess 121 and formed thereon an annular protrusion 122 that is above the annular recess 121 and below where the shaft part 120 and a knuckle 300 are joined; in which an inner-peripheral-surface side of a seal part 430 of a dust cover is in sliding contact with an outer peripheral surface of the annular recess 121 and an outer peripheral surface of the annular protrusion 122; and in which a fastening member 520 that fastens the seal part 430 to the shaft part is provided to an outer-peripheral-surface side of the seal part 430. The ball joint is characterized in that the seal part 430 has a tip end surface 444 that faces the knuckle 300 and is a sloped surface that decreases in diameter toward the knuckle 300.

Inventors:
HIROTA, Takuma (590-1 Jitogata, Makinohara-sh, Shizuoka 32, 〒4210532, JP)
Application Number:
JP2018/030625
Publication Date:
March 28, 2019
Filing Date:
August 20, 2018
Export Citation:
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Assignee:
NOK CORPORATION (12-15, Shiba Daimon 1-chome Minato-k, Tokyo 85, 〒1058585, JP)
International Classes:
F16C11/06; F16J3/04; F16J15/52
Domestic Patent References:
WO2011049012A12011-04-28
Foreign References:
JPH11223209A1999-08-17
JPS54134871U1979-09-19
US2271293A1942-01-27
Attorney, Agent or Firm:
NAKAMURA, Go et al. (Acropolis 21 Bldg. 8th Floor, 4-10 Higashi Nihonbashi 3-chome, Chuo-k, Tokyo 04, 〒1030004, JP)
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