Bolt head cap

The bolt head cap design with a deformable thin-walled portion and central magnet ensures effective rust prevention by minimizing resin use and maintaining tight contact, addressing the limitations of existing caps.

JP7870062B2Active Publication Date: 2026-06-04KYOWA RUBBER
View PDF 12 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
KYOWA RUBBER
Filing Date
2022-03-29
Publication Date
2026-06-04

Smart Images

  • Figure 0007870062000001
    Figure 0007870062000001
  • Figure 0007870062000002
    Figure 0007870062000002
  • Figure 0007870062000003
    Figure 0007870062000003
Patent Text Reader

Abstract

To prevent rust of a bolt head even if the use amount of a caulking material is reduced or eliminated, and to enable cutting-off due to strong pressing and thus sufficiently maintain a rust-proofing function.SOLUTION: A bolt head cap 11 is equipped with a cap body 12 that covers a bolt head 52 in a fastened bolt 51, and a magnet 13 that is held at a center of a ceiling portion of the cap body 12 and exerts attraction force to the bolt head 52. The height of a ceiling surface of the cap body 12 is made to be higher than the height of the bolt head 52. At an outer peripheral side part than a magnet holding portion 21 holding the magnet 13 in the cap body 12, a thin wall portion 24 that has wall thickness thinner than a periphery and is easy to elastically deform is formed.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art