Title:
VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND SPEED REDUCER
Document Type and Number:
Japanese Patent JP2021165547
Kind Code:
A
Abstract:
To improve efficiency of processing work of an annular member and reduce processing cost.SOLUTION: An internal gear component 5 formed separately from a sprocket 1 includes: an annular body 5a abutting to a sprocket body 1a from an axial direction; and an annular projecting part 5b extended to the axial direction from the annular body and fitted to a bearing recessed part 10 provided on an inner periphery of the sprocket body. A speed reducer 13 includes: internal teeth 5c, 5d formed on the inner peripheries of the annular body and the annular projecting part, respectively; and rollers 23 held by the internal teeth 5c of the annular body out of the respective internal teeth so as to enable rolling. Each of the rollers is held only by the internal tooth 5c of the annular body 5a without being held by the internal tooth 5d of the annular projecting part 5b in a rotating axis direction of the annular member.SELECTED DRAWING: Figure 3
Inventors:
SATO SHUHEI
Application Number:
JP2020069898A
Publication Date:
October 14, 2021
Filing Date:
April 08, 2020
Export Citation:
Assignee:
HITACHI ASTEMO LTD
International Classes:
F01L1/352; F01L1/356
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Kazuaki Takashima
Tomioka Kiyoshi
Kazuaki Takashima