| 摘要 |
A ball roller assembly is provided to save manufacturing costs by reducing the number of balls equipped inside the ball roller assembly. A ball roller assembly comprises a rotating unit(31), a plurality of balls(37), a ball holder unit(40), and a first roller cover(33). The rotating unit has a penetrated center part, and forms penetrated space. The balls are equipped in the penetrated space of the rotating unit, and roll-contacted with an inner circumference surface of the penetrated space. The ball holder unit is equipped in the penetrated space of the rotating unit, and mounted by the balls. The first roller cover shields one opened surface of the rotating unit, and prevents separation of the ball holder unit. |
