# US 9,438,095 B2 · Transmission device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,438,095 B2 - Document ID: US9438095B2 - Status: Granted - Kind: B2 - Application number: 14/525,386 - Filed: 2014-10-28 - Published: 2015-05-14 - Granted: 2016-09-06 - Earliest claimed: 2013-11-08 - Assignees: Hon Hai Precision Industry Co., Ltd. - Applicants: Hon Hai Precision Industry Co., Ltd. - Inventors: Mi-Chien Chen; Ya-Yi Chang - Web page: https://patentgrep.com/patent/US9438095B2 ## CPC - H02K 49/106: {with a radial air gap} - H02K 7/116: with gears - H02K 16/00: Machines with more than one rotor or stator {(machines for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts H02K51/00; permanent magnet machines with multiple rotors or stators relatively rotated for vectorially combining the excitation fields or the armature voltages H02K21/029)} - Y10T 74/19: Gearing - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A transmission device includes an input shaft, a first transmission mechanism, a speed changing mechanism, and an output shaft. The first transmission mechanism includes a transmission shaft, an inner magnetic member received in the transmission shaft, a mounting housing coupled to the input shaft, and an outer magnetic member. The input shaft is configured to rotate the mounting housing. The outer magnetic member is received in the mounting housing and positioned adjacent to the inner magnetic member. A magnetic pole of the inner magnetic member is opposite to a magnetic pole of the outer magnetic member. The speed changing mechanism is coupled to the transmission shaft. The output shaft is coupled to the speed changing mechanism. ## Claims ### Claim 1 A transmission device comprising: an input shaft; a first transmission mechanism coupled to the input shaft and comprising: a transmission shaft, an inner magnetic member received in the transmission shaft, a cover covering the transmission shaft, a mounting housing movably covering the cover and coupled to the input shaft, the input shaft configured to rotate the mounting housing, and an outer magnetic member received in the mounting housing and positioned adjacent to the inner magnetic member, a magnetic pole of the inner magnetic member being opposite to a magnetic pole of the outer magnetic member; a speed changing mechanism coupled to the cover and positioned at a side of the cover away from the input shaft; and an output shaft coupled to the speed changing mechanism. ### Claim 2 (depends on 1) The transmission device of claim 1, wherein the inner magnetic member is positioned at a circumference of the transmission shaft and surrounds a center axis of the transmission shaft. ### Claim 3 (depends on 1) The transmission device of claim 1, wherein the transmission shaft is coaxial with the mounting housing. ### Claim 4 (depends on 1) The transmission device of claim 1, wherein the first transmission mechanism further comprises a bush sleeved on an end portion of the transmission shaft away from the speed changing mechanism, the cover covers the bush and coupled to the bush. ### Claim 5 (depends on 1) The transmission device of claim 1, wherein the cover comprises: a cover body, and a fixing flange perpendicularly protruding from an edge of the cover body outward and fixed to the speed changing mechanism. ### Claim 6 (depends on 1) The transmission device of claim 1, wherein the speed changing mechanism comprises a first transmission member and a second transmission member meshing the first transmission member, the first transmission member is coupled to the cover, the second transmission member is coupled to the output shaft. ### Claim 7 (depends on 6) The transmission device of claim 6, wherein the transmission device further comprises a second transmission mechanism, the speed changing mechanism is coupled to the output shaft via the second transmission mechanism. ### Claim 8 (depends on 7) The transmission device of claim 7, wherein the second transmission mechanism comprises: a transmission shaft coupled to the second transmission member, an inner magnetic member received in the transmission shaft of the second transmission mechanism, a cover covering the transmission shaft of the second transmission mechanism, a mounting housing movably covering the cover of the second transmission mechanism, and an outer magnetic member received in the mounting housing of the second transmission mechanism. ### Claim 9 (depends on 8) The transmission device of claim 8, wherein a sealing ring is positioned between the cover of the second transmission mechanism and the first transmission member, another sealing ring is positioned between the cover of the first transmission mechanism and the first transmission member. ### Claim 10 (depends on 7) The transmission device of claim 7, wherein a protective housing comprises a first housing and a second housing, the first housing covers the first transmission mechanism and the speed changing mechanism, the second housing covers the second transmission mechanism and the speed changing mechanism, the second housing abuts against the first housing. ### Claim 11 A transmission device comprising: an input shaft; a first transmission mechanism comprising: a transmission shaft, an inner magnetic member received in the transmission shaft, a mounting housing coupled to the input shaft, the input shaft configured to rotate the mounting housing, and an outer magnetic member received in the mounting housing and positioned adjacent to the inner magnetic member, a magnetic pole of the inner magnetic member being opposite to a magnetic pole of the outer magnetic member; a speed changing mechanism coupled to the transmission shaft; and an output shaft coupled to the speed changing mechanism. ### Claim 12 (depends on 11) The transmission device of claim 11, wherein the inner magnetic member is positioned at a circumference of the transmission shaft and surrounds a center axis of the transmission shaft, a receiving groove is defined at an inner wall of the mounting housing, the outer magnetic member is received in the receiving groove. ### Claim 13 (depends on 11) The transmission device of claim 11, wherein the first transmission mechanism further comprises a cover covering the transmission shaft and coupled to the transmission shaft. ### Claim 14 (depends on 13) The transmission device of claim 13, wherein the first transmission mechanism further comprises a bush sleeved on an end portion of the transmission shaft away from the speed changing mechanism, the cover is coupled to the transmission shaft via the bush. ### Claim 15 (depends on 13) The transmission device of claim 13, wherein the cover comprises: a cover body, and a fixing flange perpendicularly protruding from an edge of the cover body outward and coupled to the speed changing mechanism. ### Claim 16 (depends on 15) The transmission device of claim 15, wherein the speed changing mechanism comprises a first transmission member and a second transmission member meshing the first transmission member, the first transmission member is coupled to the cover body of the cover, the second transmission member is coupled to the output shaft. ### Claim 17 (depends on 16) The transmission device of claim 16, wherein the transmission device further comprises a second transmission mechanism, the speed changing mechanism is coupled to the output shaft via the second transmission mechanism. ### Claim 18 (depends on 17) The transmission device of claim 17, wherein the second transmission mechanism comprises: a transmission shaft coupled to the second transmission member, an inner magnetic member received in the transmission shaft of the second transmission mechanism, a mounting housing coupled to the output shaft, and an outer magnetic member received in the mounting housing of the second transmission mechanism. ### Claim 19 (depends on 18) The transmission device of claim 18, wherein the second transmission mechanism further comprises a cover covering the transmission shaft of the second transmission mechanism. ### Claim 20 (depends on 17) The transmission device of claim 17, wherein a protective housing comprises a first housing and a second housing, the first housing covers the first transmission mechanism and the speed changing mechanism, the second housing covers the second transmission mechanism and the speed changing mechanism, the second housing abuts against the first housing.