TH20664B - Impact protection ring of ball bearing of disc drive motor - Google Patents

Abstract

A method for preventing damage to bearings in small equipment is that the device has at least one impact stop ring located around the shaft and inside the device rotor.The ring is sized to allow movement. Only a small amount of the rotor that Relative to the shaft This permissible movement is less than the slightest movement, which will damage the bearing components.

Claims (3)

1. A disk drive for recording data that contains Electric motor including shaft And a rotor holding at least one magnetic disk Surrounding such a shaft with a set of bearings. Such rotor A rotatable holder is relative to the shaft by a double bearing assembly. It consists of an inner cylindrical face combined with such a shaft, and at least one ring. To prevent damage to the bearing unit by blocking the movement of the rotor. In relation to the shaft in a radial direction, it is sufficient to steer the part of the double bearing assembly. To splice enough that Will cause a permanent twist And damage to the parts, at least there is one such ring. To prevent damage, it is articulated with the said shaft or the said rotor. Any one And with a cylindrical face facing the said shaft Or such a rotor Which one is left And separate from the said shaft or any one such rotor that remains Is a phase that is less than the distance that the rotor must move in relation to And towards the shaft This is to cause a permanent twist of the internal parts of the double cartridge. By which the rotor It will be prevented from moving in relation to the shaft as Sufficient for permanent twisting of any part, one of the aforementioned double bearing set Where at least one such ring Will be set on the shaft separated with a set of ball bearings Such a double gun And at least one such ring will continue to contain an electrically twisted material that shrinks when the electrical potential difference is applied to at least one such ring, creating a gap of the One such distance 2. A disk drive for recording data that contains Electric motor including shaft And at least one magnetic disc mounting rotor Surrounding the shaft with a pair of guns. Such rotor A rotatable holder is related to the shaft by a pair of ball bearings. It consists of a cylindrical surface, the inner shaft, and at least a ring. To prevent damage to such double-bearing units by blocking the movement of the rotor relative to the said shaft in the direction A radius by a size sufficient to steer the part Of such double bearing units to Will cause a permanent twist And damage To the said piece At least there is a ring One such unit for protection against damage is attached to the shaft. Or any such rotor and with a cylindrical surface facing the said shaft Or any such rotor One left And separated from the said shaft Or any one of the aforementioned rotor is The distance less than the distance that the rotor will move in relation to And directed towards the shaft to achieve permanent twisting of the part. Within the set of double bearings. The rotor is prevented from displacement in relation to the shaft sufficiently to the permanent twisting of any part. Of one of the following double bearing sets Where at least one such ring It consists of a pair of rings, each of which is located adjacent to one of the bearing units. The ring has a metal part and The electric twisted part is bonded together. By the part that is twisted with such electricity Contraction point under Different electrical potential, whereby the ring releases the rotor from its bonding When getting power And the adhesion of the said rotor when it is not energized to prevent motion of such rotor along the shaft. 3.Protection against impact damage To prevent twisting of the sample Permanent parts of the disk drive bearing assembly That have shaft and rotor The shaft and the rotor are held together by a set of bearings. The anti-collision device consists of a ring to protect the bearing assembly from the effects of impact. The ring is around the shaft and has an outer face that matches the inner face of the rotor. The ring has a circular radius. To create a gap between the rings And such inner surface of such rotor whose radial distance is less than the distance at which such rotor is moved in Such radial direction To achieve permanent twisting of any part. Of the bearing unit The said disk drive. Where the ring is located on the said shaft and separates the aforementioned bearing assembly and the ring consists of an electrically twisted part. Which will shrink in response to differences Electric potential By which the outside surface of the said ring And the aforementioned inner surface of The rotors are separated from each other. When the rings shrink and adhere to each other when The ring does not shrink.