# US 10,502,304 B2 · Drive transmission device for transmitting rotary drive > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,304 B2 - Document ID: US10502304B2 - Status: Granted - Kind: B2 - Application number: 14/962,920 - Filed: 2015-12-08 - Published: 2016-06-16 - Granted: 2019-12-10 - Earliest claimed: 2014-12-11 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Hisashi Kataoka - Web page: https://patentgrep.com/patent/US10502304B2 ## CPC - F16H 57/021: Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings - B41J 23/02: Mechanical power drives - B41J 23/04: with driven mechanism arranged to be clutched to continuously- operating power source - B65H 3/0669: {Driving devices therefor} - F16H 57/022: Adjustment of gear shafts or bearings (for compensating misalignment of axes of toothed gearings without orbital motion F16H1/26; for compensating misalignment of axes of planetary gears F16H1/48) - F16H 57/023: Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly - G03G 15/6511: {Feeding devices for picking up or separation of copy sheets} - B65H 2403/42: Spur gearing - B65H 2404/17: Details of bearings - F16H 2057/02034: {Gearboxes combined or connected with electric machines} - F16H 2057/0216: {Intermediate shaft supports, e.g. by using a partition wall} - F16H 2057/0224: {using eccentric bushes} - F16H: GEARING - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A drive transmission device includes a shaft supporting member attached to a drive frame. The shaft supporting member rotatably supports a driving shaft. The shaft supporting member includes two bearing surfaces for rotatably holding the driving shaft, where the two bearing surfaces are disposed so as to be on a straight line, and a boss portion having the center thereof located on the straight line for positioning the drive transmission device relative to the drive frame. ## Claims ### Claim 1 A drive transmission device comprising: a driving shaft; a shaft supporting member including: a first bearing portion configured to support the driving shaft; a second bearing portion configured to support the driving shaft; a connecting portion configured to connect the first bearing portion and the second bearing portion; and a positioning portion which is disposed on a straight line that is the same as an axis of the driving shaft, wherein the first bearing portion, the second bearing portion, the connecting portion, and the positioning portion are formed as one piece and are not separate from each other, a first gear configured to rotate about the driving shaft, the first gear being disposed between the first bearing portion and the second bearing portion; a screw; and a frame to which the shaft supporting member is attached, the frame having: a positioning hole, wherein the positioning portion is fitted into the positioning hole to position the shaft supporting member with respect to the frame; a screw hole to attach the shaft supporting member to the frame using the screw, wherein the screw is inserted into the screw hole in a direction parallel with an axial direction of the driving shaft; a second gear configured to rotate about a shaft fixed to the frame, the first gear and the second gear being meshed with each other and configured to transmit a driving force from a motor, wherein a center of the positioning portion is disposed on the straight line that is the same as the axis of the driving shaft, and in a state where the shaft supporting member is attached to the frame, the driving shaft and the shaft fixed to the frame are in parallel. ### Claim 2 (depends on 1) The drive transmission device according to claim 1, wherein a shape of the positioning portion is a circular arc. ### Claim 3 (depends on 1) The drive transmission device according to claim 1, wherein a material used for the shaft supporting member is electrically conductive. ### Claim 4 (depends on 1) The drive transmission device according to claim 1, wherein the positioning portion has an insertion hole thereinside, and the driving shaft passes through the insertion hole. ### Claim 5 (depends on 1) The drive transmission device according to claim 1, wherein the frame to be attached is a plate-like frame, and wherein the driving shaft has the first gear and another gear member attached thereto so that the first gear and the another gear member are located on either side of the frame. ### Claim 6 (depends on 1) The drive transmission device according to claim 1, wherein the second bearing portion is supported by the connecting portion in a cantilever fashion. ### Claim 7 (depends on 1) The drive transmission device according to claim 1, wherein the first gear includes a one-way clutch. ### Claim 8 (depends on 1) The drive transmission device according to claim 1, wherein the first bearing portion has an attaching surface perpendicular to the straight line, and the frame to be attached has a surface to be attached to which the shaft supporting member is attached, and wherein the positioning hole is formed in the surface to be attached, and the attaching surface is in contact with the surface to be attached. ### Claim 9 (depends on 1) The drive transmission device according to claim 1, wherein the first gear includes a first rotary portion having a radius of R1 and a second rotary portion having a radius of R2 that is smaller than R1, wherein the first rotary portion and the second rotary portion are disposed at different positions in the axial direction of the driving shaft, wherein the connecting portion includes a first portion and a second portion, a shortest distance between the first portion and the straight line is Y1, a shortest distance Y2 between the second portion and the straight line is shorter than Y1, and the first portion and the second portion are disposed at different positions in the axial direction of the driving shaft, and wherein R1Y2, and X1>X2, where X1 represents a width of the first gear in the axial direction of the driving shaft, and X2 represents a length of the first portion in the axial direction of the driving shaft. ### Claim 10 (depends on 1) The drive transmission device according to claim 1, wherein the first gear has a projecting portion, and the shaft supporting member has a recess portion, and wherein the projecting portion enters the recess portion. ### Claim 11 (depends on 1) The drive transmission device according to claim 1, wherein the first gear has a recess portion, and the shaft supporting member has a projecting portion, and wherein the projecting portion enters the recess portion. ### Claim 12 (depends on 1) The drive transmission device according to claim 1, wherein the shaft supporting member is integrally molded. ### Claim 13 (depends on 1) The drive transmission device according to claim 1, wherein the first gear is a gear having only one gear between the first bearing portion and the second bearing portion. ### Claim 14 (depends on 1) The drive transmission device according to claim 1, wherein the shaft supporting member further includes a fastening hole, and wherein the shaft supporting member is attached to the frame with the screw engaging the screw hole through the fastening hole. ### Claim 15 (depends on 1) The drive transmission device according to claim 1, wherein a surface of the frame to be attached contacting with the shaft supporting member at a position between the positioning hole and the screw hole is flat.