| 摘要 |
PROBLEM TO BE SOLVED: To provide a damper structure of a power transmission system realizing a suitable damper function by a friction member or a damping force generation means while abrasion and partial abrasion are suppressed. SOLUTION: In this damper structure, a crankshaft is provided with a crank gear. A first balance shaft 30 is provided with a first driven gear 31 permitted to rotate relatively to the shaft 30, meshing with the crank gear. An annular space is formed between the shaft 30 and the first driven gear 31. In the annular space, a fixed part 57a of a friction damper 57 is fixed to the first driven gear 31, while a slide contact part 57b of an elastic material of the damper 57 is provided such that the slide contact part 57b slidingly contacts with the first balance shaft 30. In the annular space, a coil spring 58 formed in an annular shape is provided such that the slide contact part 57b is sandwiched between the coil spring 58 and the first balance shaft 30.
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