Title:
POWER TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2023034715
Kind Code:
A
Abstract:
To bring a dog clutch into a release state by a simple structure when excessive rotation torque is inputted from drive wheels.SOLUTION: A dog clutch 51 comprises a first member 52 having first dog teeth 53, and a second member 55 having second dog teeth 58, and energized to the first member 52 side by an elastic member 62. The elastic member 62 has a non-linear spring characteristic such as a tertiary curved line. When a deformation amount of the elastic member 62 is in a first intermediate value, a load becomes maximum in a value in a region between maximum rotation torque which is inputted to the first member 52 from an electric motor 11, and excessive rotation torque which is inputted to the first member 52 from drive wheels 15, and larger than the maximum rotation torque. When the deformation amount is in a second intermediate value which is larger than a value added with a tooth depth with respect to the first intermediate value, the load become minimum in the value which is smaller than the maximum rotation torque. In a region in which the deformation amount is smaller than the first intermediate value, the load is increased accompanied by an increase of the deformation amount, and in a region between the first intermediate value and the second intermediate value, the load is decreased accompanied by the increase of the deformation amount.SELECTED DRAWING: Figure 1
Inventors:
KASAMAI SATOSHI
Application Number:
JP2021141068A
Publication Date:
March 13, 2023
Filing Date:
August 31, 2021
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16D11/00; F16D7/04; F16H25/12
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda