Title:
ハンドホール
Document Type and Number:
Japanese Patent JP7170372
Kind Code:
B2
Abstract:
To provide a hand hole with a strong structure that can withstand external loads while reducing weight by considering workability of burying a hand hole and reducing an assembly process.SOLUTION: The hand hole includes: an upper frame portion 50 configuring a base body frame 21 erecting from a bottom 23, configuring a base 20 including a base rib 22 extending vertically from an outer wall of the base body frame toward the outside and a body frame 41, including a body rib 42 extending vertically from the outer wall of the body frame toward the outside, configuring an upper frame body 51 erected from a collar 53 provided with a body 40 to be placed on the base and a work hole 54, and including an upper frame rib 52 extending in the vertical direction from the outer wall of the upper frame body; and an outer wall part 30 configuring an inner wall with a base rib and an outer wall body frame 31 larger than a size including the body rib and the upper frame rib, and including an outer wall rib 32 extending vertically from the inner wall of the outer wall body frame toward the inside and disposed in a position different from the body rib.SELECTED DRAWING: Figure 3
Inventors:
Naoshi Taguchi
Taguchi second son
Junichi Michishita
Taguchi second son
Junichi Michishita
Application Number:
JP2018231272A
Publication Date:
November 14, 2022
Filing Date:
December 11, 2018
Export Citation:
Assignee:
Hideo Sakamoto
International Classes:
H02G9/10; E02D29/12; H02G1/06
Domestic Patent References:
| JP2005168271A | ||||
| JP20062474A | ||||
| JP2008187893A | ||||
| JP200977559A | ||||
| JP10224975A | ||||
| JP8284243A |
Attorney, Agent or Firm:
Yokoi Nao