| 摘要 |
A power transfer device for four-wheel drive in combination with a power transmission comprises a transfer casing detachably secured at one side thereof to the transmission casing, first and second inner casings respectively assembled within the transmission and transfer casings in a coaxial relationship, a first ring gear integral with the first inner casing and in mesh with an output gear of the transmission, a second ring gear integral with the second inner casing and drivingly connected to rear-wheel axles, a first differential gear unit for front-wheel drive assembled within the first inner casing, a second differential gear unit assembled within the second inner casing and drivingly connected to the first inner casing and to the first differential gear unit, and a locking mechanism for locking the second differential gear unit.
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