Title:
SEALING DEVICE
Document Type and Number:
Japanese Patent JP2022070382
Kind Code:
A
Abstract:
To provide a sealing device which can secure a length of a bellows part in a radial direction, accordingly, is high in eccentricity following performance, and achieved in weight reduction, resource saving and the simplification of a manufacturing process.SOLUTION: A sealing device 1 for sealing a clearance between a shaft and a machine body having an opening part which the shaft penetrates comprises: an annular attachment part 10 which is fixed to the opening part so that an internal peripheral face becomes parallel with an axial core of the shaft, and in which engagement grooves 12 being grooves which form a circle with the axial core as a center at the internal peripheral face are formed in two pieces at a specified interval in a direction parallel with the axial core; two lip parts 20, two bumper parts 50 and two bellows parts 30 which tightly contact with an external peripheral face of the shaft, and are arranged at specified intervals in a direction parallel with the axial core; and two outside-diameter engagement parts 40 which exist at external peripheral side end parts of the bellows parts, are integrated with the bellows parts, fit and fixed to the two engagement grooves of the annular attachment part, and arranged at a specified interval in a direction parallel with the axial core.SELECTED DRAWING: Figure 1
Inventors:
TARUKAWA YUICHI
Application Number:
JP2020179416A
Publication Date:
May 13, 2022
Filing Date:
October 27, 2020
Export Citation:
Assignee:
NOK CORP
International Classes:
F16J3/04; F16J15/3232; F16J15/52
Attorney, Agent or Firm:
Right Shunsuke
Takahashi politics
Motoki Mizuno
Yuichiro Matsuda
Takahashi politics
Motoki Mizuno
Yuichiro Matsuda