Title:
板ばねナット及び締結構造
Document Type and Number:
Japanese Patent JP7444831
Kind Code:
B2
Abstract:
To provide a leaf spring nut preventing a retaining effect from being lost by making the leaf spring nut hard to be rotated with respect to a rod body in which a spiral screw is formed, and a fastening structure employing the same.SOLUTION: The present invention relates to a leaf spring nut in which a projected portion 31 is formed on an outer peripheral surface of a longer diameter portion of a rod material and a short diameter portion is formed in a low projected shape and which is used for fastening a member. A retaining piece part 11 is formed in an insertion hole of a nut plate 10. The retaining piece part 11 is allowed to be elastically deformed so as to move over the projected portion 31 of the rod material in a fastening direction of the leaf spring nut, and prevented from being elastically deformed so as to move over the projected portion 31 of the rod material in a coming-off direction of the leaf spring nut. In a rotation preventive plate, a detent plate part 21 is formed to be able to elastically deformed and rise. The detent plate part 21 performs detent by being elastically deformed in the fastening direction and press-contacted to the shorter diameter portion of the rod material, and the retaining piece part 11 of the nut plate 10 is locked to the projected portion 31 of the rod material.SELECTED DRAWING: Figure 1
Inventors:
Shigenobu Hamanaka
Application Number:
JP2021177364A
Publication Date:
March 06, 2024
Filing Date:
October 29, 2021
Export Citation:
Assignee:
Hamanaka Nut Co., Ltd.
International Classes:
F16B39/30; F16B33/02; F16B37/02
Domestic Patent References:
| JP50035956U | ||||
| JP17006231Y1 | ||||
| JP60161712U |
Attorney, Agent or Firm:
Hisao Ishii