# US 12,110,899 B2 · Oscillation device and fan > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,110,899 B2 - Document ID: US12110899B2 - Status: Granted - Kind: B2 - Application number: 17/772,752 - Filed: 2020-01-08 - Published: 2022-11-24 - Granted: 2024-10-08 - Earliest claimed: 2019-12-23 - Assignees: Gd Midea Environment Appliances Mfg Co., Ltd.; Midea Group Co., Ltd. - Applicants: Gd Midea Environment Appliances Mfg Co., Ltd.; Midea Group Co., Ltd. - Inventors: Shiqiang Cui - Web page: https://patentgrep.com/patent/US12110899B2 ## CPC - F04D 25/105: {by changing rotor axis direction, e.g. oscillating fans (interconnecting rotary motion and oscillating motion F16H)} - F04D 19/002: {Axial flow fans} - F04D 29/053: Shafts - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## Abstract The present application discloses an oscillation device and a fan, the oscillation device comprises a fixation seat provided with a through hole; a transmission shaft rotatably mounted in the through hole; and a motor mounted at the fixation seat, an output shaft of the motor being connected to an end of the transmission shaft, an axis of the output shaft of the motor being collinear with an axis of the transmission shaft, and the motor being configured to drive the transmission shaft to rotate. ## Claims ### Claim 1 An oscillation device comprising: a fixation seat provided with a through hole; a transmission shaft rotatably mounted in the through hole; and a motor mounted at the fixation seat, an output shaft of the motor being connected to an end of the transmission shaft, an axis of the output shaft of the motor being collinear with an axis of the transmission shaft, and the motor being configured to drive the transmission shaft to rotate; wherein the end of the transmission shaft is provided with an irregularly-shaped hole, a cross-section of the output shaft of the motor is irregularly-shaped, and the output shaft is adaptively inserted in the irregularly-shaped hole. ### Claim 2 (depends on 1) The oscillation device according to claim 1, wherein the irregularly-shaped hole is provided with an internal spline, an outer peripheral surface of the output shaft of the motor is provided with an external spline, and the internal spline is engaged with the external spline. ### Claim 3 (depends on 1) The oscillation device according to claim 1, wherein the output shaft of the motor is connected to the irregularly-shaped shaft through a pin. ### Claim 4 (depends on 1) The oscillation device according to claim 1, further comprising: a bearing including two sub-bearings provided at an interval in an axial direction of the transmission shaft; wherein the transmission shaft is rotatably mounted in the through hole through the bearing. ### Claim 5 (depends on 1) The oscillation device according to claim 1, wherein: the oscillation device further comprises a bearing, and the transmission shaft is rotatably mounted in the through hole through the bearing; or an inner side of the through hole is provided with an abutting circular protrusion, and the transmission shaft is rotatably mounted at an inner side of the abutting circular protrusion. ### Claim 6 (depends on 5) The oscillation device according to claim 5, wherein the transmission shaft is of a step structure, and the bearing or the abutting circular protrusion is convexly mounted at a step of the transmission shaft. ### Claim 7 (depends on 1) The oscillation device according to claim 1, further comprising: a reversing assembly configured to define a preset rotation angle for reciprocating rotations of the transmission shaft. ### Claim 8 (depends on 7) The oscillation device according to claim 7, wherein the reversing assembly includes a Hall element and a magnetic element, one of the Hall element and the magnetic element is mounted at the transmission shaft, and another one of the Hall element and the magnetic element is mounted at the fixation seat. ### Claim 9 (depends on 8) The oscillation device according to claim 8, further comprising: a shaft sleeve fixedly sleeved on the transmission shaft; wherein the magnetic element is mounted at the shaft sleeve, and the Hall element is mounted at the fixation seat. ### Claim 10 (depends on 9) The oscillation device according to claim 9, wherein: the oscillation device further comprises a bearing and the transmission shaft is rotatably mounted in the through hole through the bearing, or an inner side of the through hole is provided with an abutting circular protrusion and the transmission shaft is rotatably mounted at an inner side of the abutting circular protrusion; and the transmission shaft is of a step structure, and the shaft sleeve is mounted at a step of the transmission shaft and adjacent to the bearing or the abutting circular protrusion. ### Claim 11 (depends on 7) The oscillation device according to claim 7, wherein the preset rotation angle is at least 50 degrees. ### Claim 12 (depends on 7) The oscillation device according to claim 7, wherein: the reversing assembly has a plurality of gear positions and the preset rotation angle is one of a plurality of preset rotation angles; and each of the plurality of gear positions corresponds to one preset rotation angle of the plurality of preset rotation angles. ### Claim 13 (depends on 1) The oscillation device according to claim 1, wherein the transmission shaft is provided with a wiring hole for wiring. ### Claim 14 (depends on 13) The oscillation device according to claim 13, wherein the wiring hole includes: an axial section extending in an axial direction of the transmission shaft and piercing through an end surface of the transmission shaft away from the motor; and a radial section communicated with the axial section. ### Claim 15 (depends on 1) A fan comprising: a fan box; and the oscillation device of claim 1 mounted in the fan box. ### Claim 16 (depends on 15) The fan according to claim 15, wherein: the fan box is of an integrated structure or a split structure; an end of the fan box is provided with an opening in a length direction of the fan box; and the oscillation device is configured to slide into the fan box through the opening. ### Claim 17 An oscillation device comprising: a fixation seat provided with a through hole; a transmission shaft rotatably mounted in the through hole; and a motor mounted at the fixation seat, an output shaft of the motor being connected to an end of the transmission shaft, an axis of the output shaft of the motor being collinear with an axis of the transmission shaft, and the motor being configured to drive the transmission shaft to rotate; wherein the end of the transmission shaft is provided with a shaft mounting hole, the shaft mounting hole is provided with an internal spline, an outer peripheral surface of the output shaft of the motor is provided with an external spline, and the internal spline is engaged with the external spline.