TORQUE ROD AND MANUFACTURING METHOD THEREOF

摘要

A torque rod includes a small ring section to be connected to an engine, a large ring section to be connected to a vehicle body, and a rod section providing a connection between the small ring section and the large ring section. The large ring section includes an outer member connected to the rod section, an inner member to be connected to the vehicle body, and a large ring elastic member providing a connection between the outer member and the inner member. Based on a transmission characteristic map, which is prepared by mapping transmission characteristics of the torque rod that are determined by a rod length, a small ring torsion spring, a large ring spring and a large ring spring ratio as parameters, such a combination of parameters that the transmission characteristics are less than 100 N/mm is selected.

主权项

1. A torque rod comprising:
a small ring section to be connected to an engine; a large ring section to be connected to a vehicle body; a rod section providing a connection between the small ring section and the large ring section; the small ring section including an outer member connected to the rod section, a small ring inner member to be connected to the engine, and a small ring elastic member providing a connection between the outer member and the small ring inner member; and the large ring section including an outer member connected to the rod section, an inner member to be connected to the vehicle body, and a large ring elastic member providing a connection between the outer member and the inner member; wherein large ring transmission characteristics relative to magnitude of transmission force transmitted from the large ring section to the vehicle body are of flat characteristics whose peak value is less than 100 N/mm; and wherein a combination between a small ring torsion spring (Kr) which is a spring at the time of torsion applied to the small ring elastic member of the small ring section and a large ring spring ratio (R) which is a ratio of a spring in the axial direction of the inner member of the large ring section with respect to a spring in the axial direction of the rod section is configured such that transmission characteristics in a transmission characteristic map which is obtained by mapping transmission characteristics of the torque rod, which are predetermined by using a rod length, the small ring torsion spring, the large ring spring ratio and a large ring spring value as parameters are less than 100 N/mm.