# US 2019/0316671 A1 · Cover fixing structure and motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0316671 A1 - Document ID: US20190316671A1 - Status: Published application - Kind: A1 - Application number: 16/343,410 - Filed: 2017-10-03 - Published: 2019-10-17 - Earliest claimed: 2016-10-21 - Assignees: Nidec Sankyo Corporation - Applicants: Nidec Sankyo Corporation - Inventors: Kazumi FURUBAYASHI; Takashi HIGUCHI - Web page: https://patentgrep.com/patent/US20190316671A1 ## CPC - F16H 57/028: characterised by means for reducing vibration or noise - F16H 57/031: characterised by covers or lids for gearboxes - H02K 5/04: Casings or enclosures characterised by the shape, form or construction thereof - H02K 7/1166: {comprising worm and worm-wheel (structural association with bearings specially adapted for worm gear drives H02K7/081)} - F16H 55/22: for transmissions with crossing shafts, especially worms, worm-gears - F16H 2055/065: {Moulded gears, e.g. inserts therefor} - F16H: GEARING - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract The motor (1) is provided with a frame (3) (support member) that includes a third plate (33) (first support unit) supporting a gear cover (7) on one side (X1) in a first direction (X), and a first plate (31) (second support unit) supporting the gear cover on one side (Z1) in a second direction (Z). The gear cover includes a flexible plate (735) (biasing force generation unit) configured to generate a biasing force for biasing the gear cover in an inclined direction inclined toward both the other side (X2) in the first direction and the one side in the second direction, upon pressing the gear cover against the third plate. The first plate includes surface (318) (first abutment unit) abutting against the gear cover, and a hole (311) provided with an inner peripheral surface (second abutment unit) abutting against the convex portion (741) of the gear cover. ## Claims ### Claim 1 A cover fixing structure for fixing a cover to a support member, wherein the support member comprises a first support unit configured to support the cover on one side in a first direction, and a second support unit configured to support the cover at one side in a second direction orthogonal to the first direction, one of the cover and the support member comprises a biasing force generation unit configured to generate, in a case that the cover is pressed against the first support unit, a biasing force for biasing the cover in an inclined direction inclined toward both an other side in the first direction and the one side in the second direction, and the second support unit comprises a first abutment unit configured to abut the cover from the one side in the second direction, and a second abutment unit configured to abut the cover from the other side in the first direction. ### Claim 2 (depends on 1) The cover fixing structure according to claim 1, wherein the biasing force generation unit is a flexible plate configured to warp while an inclined surface inclined toward both the first direction and the second direction being a contact surface between the cover and the first support unit in a case that the cover is pressed against the first support unit, to generate the biasing force. ### Claim 3 (depends on 2) The cover fixing structure according to claim 2, wherein the flexible plate is formed in the cover to extend in the second direction with a free end thereof facing an other side in the second direction, the flexible plate is formed with the inclined surface formed to face an inclined direction inclined toward both the one side in the first direction and the other side in the second direction, and the flexible plate warps toward the other side in the first direction in a case that the cover is pressed against the first support unit, to generate the biasing force. ### Claim 4 (depends on 3) The cover fixing structure according to claim 3, wherein the inclined surface is formed in a convex portion protruding from the flexible plate toward the one side in the first direction, and the first support unit is provided with an opening portion opening toward the other side in the first direction, the convex portion fitting into the opening portion in a case that the cover is pressed against the first support unit, and an opening edge on the other side in the first direction of the opening portion abuts the inclined surface. ### Claim 5 (depends on 1) The cover fixing structure according to claim 1, wherein the second abutment unit is formed of an inner peripheral surface of a hole into which a convex portion formed on the cover is fitted, the hole being provided in the second support unit, and an outer peripheral surface of a convex portion to be fitted into the hole formed on the cover, the convex portion being formed in the second support unit. ### Claim 6 (depends on 1) The cover fixing structure according to claim 1, wherein the cover comprises a hook protruding toward an other side in the second direction and elastically engaging with the second support unit. ### Claim 7 (depends on 1) The cover fixing structure according to claim 1, wherein an engagement unit configured to position a third direction orthogonal to both the first direction and the second direction of the cover is configured of a convex portion formed in one of the first support unit and the cover and a concave portion formed in the other one of the first support unit and the cover, where the convex portion is fitted into the concave portion. ### Claim 8 A motor comprising: a cover fixing structure for fixing a cover to a support member; wherein the support member comprises a first support unit configured to support the cover on one side in a first direction, and a second support unit configured to support the cover at one side in a second direction orthogonal to the first direction; wherein one of the cover and the support member comprises a biasing force generation unit configured to generate, in a case that the cover is pressed against the first support unit, a biasing force for biasing the cover in an inclined direction inclined toward both an other side in the first direction and the one side in the second direction; and the second support unit comprises a first abutment unit configured to abut the cover from the one side in the second direction, and a second abutment unit configured to abut the cover from the other side in the first direction; a motor main body comprising a motor axis extending along the second direction; a frame comprising a first plate fixed to an end on an other side in the second direction of the motor main body, a second plate facing the first plate on the other side in the second direction, and a third plate configured to couple the first plate and the second plate at one side in the first direction; a rotation shaft arranged between the first plate and the second plate; a gear transmission mechanism configured to transmit rotation of a motor shaft of the motor main body to a gear unit of the rotation shaft; and a gear cover fixed to the frame to cover the gear transmission mechanism between the first plate and the second plate, wherein the frame is the support member, the gear cover is the cover, the third plate is the first support unit, and the first plate is the second support unit. ### Claim 9 (depends on 8) The motor according to claim 8, wherein the biasing force generation unit is a flexible plate configured to warp while an inclined surface inclined toward both the first direction and the second direction being a contact surface between the cover and the first support unit in a case that the cover is pressed against the first support unit, to generate the biasing force. ### Claim 10 (depends on 9) The motor according to claim 9, wherein the flexible plate is formed in the cover to extend in the second direction with a free end thereof facing an other side in the second direction, the flexible plate is formed with the inclined surface formed to face an inclined direction inclined toward both the one side in the first direction and the other side in the second direction, and the flexible plate warps toward the other side in the first direction in a case that the cover is pressed against the first support unit, to generate the biasing force. ### Claim 11 (depends on 10) The motor according to claim 10, wherein the inclined surface is formed in a convex portion protruding from the flexible plate toward the one side in the first direction, and the first support unit is provided with an opening portion opening toward the other side in the first direction, the convex portion fitting into the opening portion in a case that the cover is pressed against the first support unit, and an opening edge on the other side in the first direction of the opening portion abuts the inclined surface. ### Claim 12 (depends on 8) The motor according to claim 8, wherein the second abutment unit is formed of an inner peripheral surface of a hole into which a convex portion formed on the cover is fitted, the hole being provided in the second support unit, and an outer peripheral surface of a convex portion to be fitted into the hole formed on the cover, the convex portion being formed in the second support unit. ### Claim 13 (depends on 8) The motor according to claim 8, wherein the cover comprises a hook protruding toward an other side in the second direction and elastically engaging with the second support unit. ### Claim 14 (depends on 8) The motor according to claim 8, wherein an engagement unit configured to position a third direction orthogonal to both the first direction and the second direction of the cover is configured of a convex portion formed in one of the first support unit and the cover and a concave portion formed in the other one of the first support unit and the cover, where the convex portion is fitted into the concave portion.