# US 8,783,960 B2 · Dust-proof housing device for an assembly and bearing assembly including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,783,960 B2 - Document ID: US8783960B2 - Status: Granted - Kind: B2 - Application number: 13/665,540 - Filed: 2012-10-31 - Published: 2014-05-01 - Granted: 2014-07-22 - Earliest claimed: 2012-10-31 - Assignees: Thai Dieng Industry Co., Ltd. - Applicants: Thai Dieng Industry Co., Ltd. - Inventors: Chih-Hsien Chang - Web page: https://patentgrep.com/patent/US8783960B2 ## CPC - F16C 33/7896: {with two or more discrete sealings arranged in series} - F16C 33/7886: {mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race} - F16C 19/06: with a single row or balls - F16C 23/084: {sliding on a complementary spherical surface} - F16C 33/7876: {with sealing lips} - F16C 35/045: {with a radial flange to mount the housing} - F16C 2300/02: General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS ## Abstract A dust-proof housing device is adapted for a bearing assembly and includes a housing body that includes two housing-half walls, each of which has a central hole defining an axis, and an inner peripheral end surrounding the central hole. A dust-proof cover has a fixing ring fitted in the inner peripheral end of at least one of the housing-half walls, and an annular flexible member secured to the fixing ring. ## Claims ### Claim 1 A dust-proof housing device for a bearing assembly, comprising: a housing body including two housing-half walls, each of which has a central hole defining an axis, and an inner peripheral end surrounding said central hole; and a dust-proof cover having a fixing ring fitted in said inner peripheral end of at least one of said housing-half walls, and an annular flexible member secured to said fixing ring; said inner peripheral end including a stepped annular edge that interconnects outer and inner surfaces of a corresponding one of said housing-half walls, said stepped annular edge having an annular protrusion projecting into said central hole in proximity to said inner surface, a shoulder proximate to said outer surface, and a chamfer formed on said annular protrusion and proximate to said inner surface; and said fixing ring having a main body portion that has an L-shaped cross section and that is fitted in said stepped annular edge in a complementing manner, and a lip portion that projects from said main body portion and that engages said chamfer. ### Claim 2 (depends on 1) The dust-proof housing device as claimed in claim 1, wherein said annular flexible member has an enclosing portion that encloses said main body portion, and a flexible portion projecting into said central hole from said enclosing portion. ### Claim 3 (depends on 2) The dust-proof housing device as claimed in claim 2, wherein said flexible portion has a radial flexible part extending radially into said central hole, and an oblique flexible part that is inclined outwardly away from said radial flexible part. ### Claim 4 (depends on 1) The dust-proof device as claimed in claim 1, wherein each of said housing-half walls has a recessed wall portion which is formed with said inner peripheral end, and an annular flange that extends radially and outwardly from an outer periphery of said recessed wall portion, said annular flanges of said housing-half walls being stacked together, said recessed wall portions of said housing-half walls protruding axially from said annular flanges in two opposite outward directions and cooperatively confining a receiving space, said housing body further having a plurality of mounting holes disposed on said annular flanges, and at least one oil nozzle attached to said recessed wall portion of one of said housing-half walls. ### Claim 5 A bearing assembly, comprising: a bearing unit; and a dust-proof housing device enclosing said bearing unit, and including: a housing body including two housing-half walls, each of which having a central hole defining an axis, and an inner peripheral end surrounding said central hole; and two dust-proof covers each of which has a fixing ring fitted in said inner peripheral end of one of said housing-half walls, and an annular flexible member secured to said fixing ring; said inner peripheral end including a stepped annular edge that interconnects outer and inner surfaces of a corresponding one of said housing-half walls, said stepped annular edge having an annular protrusion projecting into said central hole in proximity to said inner surface, a shoulder proximate to said outer surface, and a chamfer formed on said annular protrusion and proximate to said inner surface; and said fixing ring having a main body portion that has an L-shaped cross section and that is fitted in said stepped annular edge in a complementing manner, and a lip portion that projects from said main body portion and that engages said chamfer. ### Claim 6 (depends on 5) The bearing assembly as claimed in claim 5, wherein said annular flexible member has an enclosing portion that encloses said main body portion, and a flexible portion projecting into said central hole from said enclosing portion. ### Claim 7 (depends on 6) The bearing assembly as claimed in claim 6, wherein said flexible portion has a radial flexible part extending radially into said central hole, and an oblique flexible part that is inclined outwardly away from said radial flexible part. ### Claim 8 (depends on 5) The bearing assembly as claimed in claim 5, wherein each of said housing-half walls has a recessed wall portion which is formed with said inner peripheral end, and an annular flange that extends radially and outwardly from an outer periphery of said recessed wall portion, said annular flanges of said housing-half walls being stacked together, said recessed wall portions of said housing-half walls protruding axially from said annular flanges in two opposite outward directions and cooperatively confining a receiving space, said housing body further having a plurality of mounting holes disposed on said annular flanges, and at least one oil nozzle attached to said recessed wall portion of one of said housing-half walls. ### Claim 9 (depends on 7) The bearing assembly as claimed in claim 7, wherein said bearing unit has an outer ring disposed between said housing-half walls, an inner ring inserted in said outer ring and around the axis, a plurality of balls movably disposed between said outer ring and said inner ring, and two dust-proof rings that are disposed between said outer and inner rings on two axially opposite sides of said balls, respectively. ### Claim 10 (depends on 9) The bearing assembly as claimed in claim 9, wherein said inner ring has two axially opposite grooves that respectively correspond in position to said two dust-proof covers and that extend around the axis, and said radial flexible parts of said flexible members respectively extend into said grooves.