Title:
内燃機関のラダーフレーム
Document Type and Number:
Japanese Patent JP6904232
Kind Code:
B2
Abstract:
A ladder frame for an internal combustion engine includes a first lateral wall and a second lateral wall, crank caps, and first joining portions and second joining portions. Each crank cap includes an arc-shaped center portion, a first lateral portion and a second lateral portion. Each first lateral portion is joined to the first lateral wall via each first joining portion, and each second lateral portion is joined to the second lateral wall via each second joining portion. Each center portion includes a supporting portion that rotatably supports the crankshaft, the center portion including a recess to which the residual portion is joined, on the opposite side to the supporting portion. Respective thicknesses of the first lateral portion and the second lateral portion are the same as that of the center portion. The recess is provided with a projection embedded in the residual portion.
Inventors:
Kojiro Kobayashi
Application Number:
JP2017239668A
Publication Date:
July 14, 2021
Filing Date:
December 14, 2017
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02F7/00; F16C9/02
Domestic Patent References:
| JP11044252A | ||||
| JP11270407A | ||||
| JP4050509A |
Foreign References:
| US20130167800 |
Attorney, Agent or Firm:
Shuhei Katayama