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A compliant foil fluid film thrust bearing including a thrust disk rotor, fluid foils, spring foils, a thrust plate, and a housing thrust surface The non-rotating but compliant fluid foils, mounted on the thrust plate and/or housing thrust surface and positioned adjacent to the thrust disk, have ope

A compliant foil fluid film thrust bearing including a thrust disk rotor, fluid foils, spring foils, a thrust plate, and a housing thrust surface The non-rotating but compliant fluid foils, mounted on the thrust plate and/or housing thrust surface and positioned adjacent to the thrust disk, have open faced channels that induce regenerative vortex flow patterns in the process fluid. The multiple spring foils together provide a tilting pad support for the fluid foils but allow them to follow the axial and overturning motion of the thrust disk. The interaction of the tilting pad underspring supports and the circumferential fluid pressure gradients in the process fluid between the fluid foils and the thrust disk rotor assure that the fluid foils will assume hydrodynamically efficient convex shapes on the surfaces adjacent to the rotor regardless of the load applied to the thrust bearing.

대표청구항 ▼

A compliant foil fluid film thrust bearing including a thrust disk rotor, fluid foils, spring foils, a thrust plate, and a housing thrust surface The non-rotating but compliant fluid foils, mounted on the thrust plate and/or housing thrust surface and positioned adjacent to the thrust disk, have ope

A compliant foil fluid film thrust bearing including a thrust disk rotor, fluid foils, spring foils, a thrust plate, and a housing thrust surface The non-rotating but compliant fluid foils, mounted on the thrust plate and/or housing thrust surface and positioned adjacent to the thrust disk, have open faced channels that induce regenerative vortex flow patterns in the process fluid. The multiple spring foils together provide a tilting pad support for the fluid foils but allow them to follow the axial and overturning motion of the thrust disk. The interaction of the tilting pad underspring supports and the circumferential fluid pressure gradients in the process fluid between the fluid foils and the thrust disk rotor assure that the fluid foils will assume hydrodynamically efficient convex shapes on the surfaces adjacent to the rotor regardless of the load applied to the thrust bearing. n sliding contact with the commutator; a magnet confronting and spaced from the rotor; and a shaft having a first end fixed to a portion of the housing bracket , supporting the eccentric rotor, and a second end not projecting outside of the housing and fitted in a concave portion of the bracket casing for preventing radial movement of the shaft, wherein the eccentric rotor is rotatably mounted on the shaft , and the eccentric rotor being brought into sliding contact with is urged toward the housing casing when the shaft eccentric rotor moves axially on the shaft . 2. The flat vibrator motor having no output shaft as claimed in claim 1, wherein each of said brushes applies pressure to the commutator, urging the eccentric rotor toward the casing. 3. The flat vibrator motor having no output shaft as claimed in claim 2, including an a first electrically insulating member having a favorable degree of slidability disposed at one of in the casing and engaging the ends second end of the shaft and shaft, wherein the eccentric rotor slidingly contacts the insulating member when the eccentric rotor moves axially on the shaft . 4. The flat vibrator motor having no output shaft as claimed in claim 3, including lubricating agent retaining means disposed where the eccentric rotor is in sliding contact with the first electrically insulating member... 5. The flat vibrator motor having no output shaft as claimed in claim 3, wherein lubricating agent retaining means is disposed at each of portions where the pair of brushes are brought into sliding contact with the commutator. .. 6. The flat vibrator motor having no output shaft as claimed in claim 3, including lubricating agent retaining means comprising a groove concentric with the shaft and disposed on the rotor. .. 7. The flat vibrator motor having no output shaft as claimed in claim 3, including lubricating agent retaining means comprising a groove concentric with the shaft and disposed on the housing. 8. The flat vibrator motor having no output shaft as claimed in claim 2, including lubricating agent retaining means comprising a groove concentric with the shaft and disposed on the eccentric rotor. 9. The flat vibrator motor having no output shaft as claimed in claim 2, including 4, wherein the lubricating agent retaining means comprising comprises a groove concentric with the shaft and disposed on in the housing first electrically insulating member . 10. The flat vibrator motor having no output shaft as claimed in claim 1, wherein the casing includes a hole and including an insulating member having a favorable degree of slidability disposed at one of covering the hole and contacting the ends second end of the shaft and wherein the eccentric rotor slidingly contacts the insulating member. 11. The flat vibrator motor having no output shaft as claimed in claim 10, including lubricating agent retaining means disposed where the eccentric rotor is in sliding contact with the insulating member... 12. The flat vibrator motor having no output shaft as claimed in claim 10, wherein lubricating agent retaining means is disposed at each of portions where the pair of brushes are brought into sliding contact with the commutator. 13. The flat vibrator motor having no output shaft as claimed in claim 10, including 11, wherein the lubricating agent retaining means comprising comprises a groove concentric with the shaft and disposed on in the eccentric rotor... 14. The flat vibrator motor having no output shaft as claimed in claim 10, including lubricating agent retaining means comprising a groove concentric with the shaft and disposed on the housing. 15. The flat vibrator motor having no output shaft as claimed in claim 1, including lubricating agent retaining means comprising a groove concentric with the shaft and disposed on the eccentric rotor... 16. The flat vibrator motor having no out