HYDRODYNAMIC BEARING DEVICE, SPINDLE MOTOR INCLUDING THE SAME, AND INFORMATION RECORDING AND REPRODUCING APPARATUS
A hydrodynamic bearing device which can enhance operating efficiency of a step of filling a lubricant and also effectively suppress leakage of the lubricant to an outer peripheral portion of the hydrodynamic bearing device; a spindle motor including the same; and an information recording and reprodu...
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| creator | HINO TOSHIFUMI UENOSONO KAORU NAKAMURA JUNICHI |
| description | A hydrodynamic bearing device which can enhance operating efficiency of a step of filling a lubricant and also effectively suppress leakage of the lubricant to an outer peripheral portion of the hydrodynamic bearing device; a spindle motor including the same; and an information recording and reproducing apparatus are provided A hydrodynamic bearing device includes a sleeve, a shaft, a lubricant, a plurality of lube repellent application areas, and a lube repellent non-application area. The sleeve has an insertion hole as a bearing hole on at least one end. The shaft is inserted into the insertion hole of the sleeve and is supported so as to be relatively rotatable with respect to the sleeve. The lubricant is interposed in a clearance between the sleeve and the shaft. The plurality of lube repellent application areas are formed into a circular pattern with the shaft being a substantial center on at positions outside the insertion hole of an open upper surface of the sleeve in a radial direction of the shaft. The lube repellent non-application area is formed between two of the lube repellent application areas which are adjacent to each other. |
| format | Patent |
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The sleeve has an insertion hole as a bearing hole on at least one end. The shaft is inserted into the insertion hole of the sleeve and is supported so as to be relatively rotatable with respect to the sleeve. The lubricant is interposed in a clearance between the sleeve and the shaft. The plurality of lube repellent application areas are formed into a circular pattern with the shaft being a substantial center on at positions outside the insertion hole of an open upper surface of the sleeve in a radial direction of the shaft. The lube repellent non-application area is formed between two of the lube repellent application areas which are adjacent to each other.</description><language>eng</language><subject>BEARINGS ; BLASTING ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; DYNAMO-ELECTRIC MACHINES ; ELECTRICITY ; ELEMENTS OR CRANKSHAFT MECHANISMS ; ENGINEERING ELEMENTS AND UNITS ; FLEXIBLE SHAFTS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; GENERATION ; HEATING ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; LIGHTING ; MECHANICAL ENGINEERING ; PHYSICS ; ROTARY BODIES OTHER THAN GEARING ELEMENTS ; SHAFTS ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>2008</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080612&DB=EPODOC&CC=US&NR=2008137229A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080612&DB=EPODOC&CC=US&NR=2008137229A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HINO TOSHIFUMI</creatorcontrib><creatorcontrib>UENOSONO KAORU</creatorcontrib><creatorcontrib>NAKAMURA JUNICHI</creatorcontrib><title>HYDRODYNAMIC BEARING DEVICE, SPINDLE MOTOR INCLUDING THE SAME, AND INFORMATION RECORDING AND REPRODUCING APPARATUS</title><description>A hydrodynamic bearing device which can enhance operating efficiency of a step of filling a lubricant and also effectively suppress leakage of the lubricant to an outer peripheral portion of the hydrodynamic bearing device; a spindle motor including the same; and an information recording and reproducing apparatus are provided A hydrodynamic bearing device includes a sleeve, a shaft, a lubricant, a plurality of lube repellent application areas, and a lube repellent non-application area. The sleeve has an insertion hole as a bearing hole on at least one end. The shaft is inserted into the insertion hole of the sleeve and is supported so as to be relatively rotatable with respect to the sleeve. The lubricant is interposed in a clearance between the sleeve and the shaft. The plurality of lube repellent application areas are formed into a circular pattern with the shaft being a substantial center on at positions outside the insertion hole of an open upper surface of the sleeve in a radial direction of the shaft. The lube repellent non-application area is formed between two of the lube repellent application areas which are adjacent to each other.</description><subject>BEARINGS</subject><subject>BLASTING</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>DYNAMO-ELECTRIC MACHINES</subject><subject>ELECTRICITY</subject><subject>ELEMENTS OR CRANKSHAFT MECHANISMS</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>FLEXIBLE SHAFTS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>GENERATION</subject><subject>HEATING</subject><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>PHYSICS</subject><subject>ROTARY BODIES OTHER THAN GEARING ELEMENTS</subject><subject>SHAFTS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2008</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjMsKwjAURLtxIeo_BNwq9LFQl9fk1gaaBzeJ0FUpEleixfr_2BY_wNUwcw6zTN5VI8iIRoOSnJ0RSOoLE3iVHHfMWalFjUwZb4hJzesgJu4rZA7UaIAW414aUuCl0YyQG5qdiRDa8TzwuVsLBD64dbK4d48hbn65SrYlel7tY_9q49B3t_iMnza4PE2PWXHI8xNkxX_WFxTYOTw</recordid><startdate>20080612</startdate><enddate>20080612</enddate><creator>HINO TOSHIFUMI</creator><creator>UENOSONO KAORU</creator><creator>NAKAMURA JUNICHI</creator><scope>EVB</scope></search><sort><creationdate>20080612</creationdate><title>HYDRODYNAMIC BEARING DEVICE, SPINDLE MOTOR INCLUDING THE SAME, AND INFORMATION RECORDING AND REPRODUCING APPARATUS</title><author>HINO TOSHIFUMI ; UENOSONO KAORU ; NAKAMURA JUNICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2008137229A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2008</creationdate><topic>BEARINGS</topic><topic>BLASTING</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>DYNAMO-ELECTRIC MACHINES</topic><topic>ELECTRICITY</topic><topic>ELEMENTS OR CRANKSHAFT MECHANISMS</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>FLEXIBLE SHAFTS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>GENERATION</topic><topic>HEATING</topic><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>PHYSICS</topic><topic>ROTARY BODIES OTHER THAN GEARING ELEMENTS</topic><topic>SHAFTS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>HINO TOSHIFUMI</creatorcontrib><creatorcontrib>UENOSONO KAORU</creatorcontrib><creatorcontrib>NAKAMURA JUNICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HINO TOSHIFUMI</au><au>UENOSONO KAORU</au><au>NAKAMURA JUNICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HYDRODYNAMIC BEARING DEVICE, SPINDLE MOTOR INCLUDING THE SAME, AND INFORMATION RECORDING AND REPRODUCING APPARATUS</title><date>2008-06-12</date><risdate>2008</risdate><abstract>A hydrodynamic bearing device which can enhance operating efficiency of a step of filling a lubricant and also effectively suppress leakage of the lubricant to an outer peripheral portion of the hydrodynamic bearing device; a spindle motor including the same; and an information recording and reproducing apparatus are provided A hydrodynamic bearing device includes a sleeve, a shaft, a lubricant, a plurality of lube repellent application areas, and a lube repellent non-application area. The sleeve has an insertion hole as a bearing hole on at least one end. The shaft is inserted into the insertion hole of the sleeve and is supported so as to be relatively rotatable with respect to the sleeve. The lubricant is interposed in a clearance between the sleeve and the shaft. The plurality of lube repellent application areas are formed into a circular pattern with the shaft being a substantial center on at positions outside the insertion hole of an open upper surface of the sleeve in a radial direction of the shaft. The lube repellent non-application area is formed between two of the lube repellent application areas which are adjacent to each other.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BEARINGS BLASTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATION HEATING INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LIGHTING MECHANICAL ENGINEERING PHYSICS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS |
| title | HYDRODYNAMIC BEARING DEVICE, SPINDLE MOTOR INCLUDING THE SAME, AND INFORMATION RECORDING AND REPRODUCING APPARATUS |
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