| 摘要 |
PURPOSE: To perform relatively low-cost manufacturing by providing a case, a tubular body mounted in the case, first and second sleeves supported in the tubular body and fixed to respective axle shafts and a freewheel device provided disposed between each sleeve and the tubular body. CONSTITUTION: This differential gear 1 rotationally drives two axle shafts 2 and 3, and includes a case 4 and a tubular body 18 fitted in a cylindrical seat 12 and rotary-driven by the case 4 at the same angular velocity as that of the seat 12. Also, two independent sleeves 34 and 35 coaxial to each other are provided, these are fixed by keys to end portions opposite the shafts 2 and 3, and attached so as to be mutually rotated in the tubular body 18. Further, ratchet gears 42 and 43 held in a releasable engaged state are provided between the tubular body 18 and the sleeves 34 and 35, and the sleeves 34 and 35 are rotary-driven at an angular velocity at least equal to the rotational speed of the tubular body 18. |
