Title:
BOLT IMPLANTATION STRUCTURE, BOLT IMPLANTATION METHOD, AND UPPER MOUNT OF VEHICLE APPLIED WITH BOLT IMPLANTATION STRUCTURE
Document Type and Number:
Japanese Patent JP2023120520
Kind Code:
A
Abstract:
To provide a bolt implantation structure capable of suppressing a plastic deformation part from protruding outward while securing sufficient binding strength between a bolt and a plate material.SOLUTION: A bolt implantation structure has a first insertion hole 10 and a second insertion hole 11 formed in two upper and lower metal fittings 8 and 9 lapped one over the other, for fixing a bolt to an inner peripheral surface 10a of the first insertion hole formed in the upper metal fittings. The root part of the bolt 12 between a shaft part 15 and a head part 14 is provided with a large-dimeter part 16 which is larger than the outer diameter of the shaft part, an inner diameter d of the inner peripheral surface of the first insertion hole is made larger than the outer diameter of an outer peripheral surface 16d of the large-diameter part 16, and the large-diameter part inserted into the first insertion hole and the second insertion hole is crushed from the axial direction of the shaft part to form a crushed deformation part 17, which enters the first insertion hole to be pressed against the inner peripheral surface of the first insertion hole.SELECTED DRAWING: Figure 5
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Inventors:
KUNIMOTO AKINORI
Application Number:
JP2022023453A
Publication Date:
August 30, 2023
Filing Date:
February 18, 2022
Export Citation:
Assignee:
KINUGAWA RUBBER IND
International Classes:
F16B4/00; F16B35/00
Attorney, Agent or Firm:
Hiromichi Kobayashi
Kiyoshi Tomioka
Kazuaki Takashima
Kiyoshi Tomioka
Kazuaki Takashima