# US 2019/0170233 A1 · Planetary differential device and method for producing a planetary differential device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170233 A1 - Document ID: US20190170233A1 - Status: Published application - Kind: A1 - Application number: 16/321,763 - Filed: 2017-06-29 - Published: 2019-06-06 - Earliest claimed: 2016-07-29 - Assignees: Schaeffler Technologies AG & Co. KG - Applicants: Schaeffler Technologies AG & Co. KG - Inventors: Franz KURTH; Ralph SCHIMPF - Web page: https://patentgrep.com/patent/US20190170233A1 ## CPC - F16H 48/11: having intermeshing planet gears - F16H 48/10: with orbital spur gears - F16H 48/40: characterised by features of the rotating cases - F16H 2048/106: {characterised by two sun gears} - F16H: GEARING ## Abstract A planetary differential device includes first and second sun gears coaxially arranged in relation to each other and defining a main axis. First and second planetary gears mesh with the first and second sun gears and mesh with each other in pairs. A planet carrier has two side disks, and the planetary gears are rotatably arranged in the planet carrier. A coupling gear is arranged coaxially to the main axis and is rigidly connected to the planet carrier. The side disks are respectively connected to the coupling gear in a material fit and form a receiving housing with a housing inner space, at least one of the side disks includes an assembly opening through which the planetary gears and the sun gears can be inserted into the inner space of the housing. ## Claims ### Claim 1 A planetary differential device comprising: a first and a second sun gear wherein the sun gears are coaxial to one another and define a main axis; first and second planet gears wherein the first planet gears mesh with the first sun gear and the second planet gears mesh with the second sun gear, and wherein the first and second planet gears mesh with one another in pairs; a planet carrier having two lateral disks, wherein the planet gears are rotatably disposed in the planet carrier; and a coupling gear coaxial to the main axis and permanently connected to the planet carrier; wherein the lateral disks are each materially bonded to the coupling gear and form a receiving housing with a housing interior, wherein at least one of the lateral disks is a lateral installation disk having an installation hole through which the planet gears and the sun gears are insertable into the housing interior. ### Claim 2 (depends on 1) The planetary differential device according to claim 1, wherein the lateral disks are welded to the coupling gear at their circumference. ### Claim 3 (depends on 1) The planetary differential device according to claim 1, wherein at least one of the lateral disks provides a bearing seat for a bearing for supporting the receiving housing on a surrounding structure. ### Claim 4 (depends on 1) The planetary differential device according to claim 1, further comprising an end cap placed on the lateral installation disk and axially securing the second sun gear in a material bonded manner in relation to the main axis. ### Claim 5 (depends on 4) The planetary differential device according to claim 4, wherein the end cap supports a sliding bearing bushing for supporting the second sun gear. ### Claim 6 (depends on 1) The planetary differential device according to claim 1, further comprising first and second planet gear pins, wherein the planet gear pins support the planet gears and wherein the planet gear pins are secured in the receiving housing in a form fitting or force fitting manner. ### Claim 7 (depends on 1) The planetary differential device according to claim 1, wherein at least one of the lateral disks has at least one through hole for receiving one of the planet gear pins. ### Claim 8 (depends on 1) A method for producing the planetary differential device according to claim 1, comprising the steps: joining the coupling gear and the lateral disks to the receiving housing (11); and installing the planet gears and the sun gears in the housing interior of the receiving housing. ### Claim 9 (depends on 8) The method according to claim 8, wherein at least one bearing seat for a bearing mechanism or at least one through hole for receiving one of the planet gear pins are formed in the receiving housing. ### Claim 10 (depends on 9) The method according to claim 9, wherein after joining the receiving housing only non-thermal procedures are used for any further finishing work. ### Claim 11 A differential for a vehicle, the differential comprising: a first sun gear; a second sun gear coaxial to the first sun gear along a common axis; a first set of planet gears in meshing engagement with the first sun gear; a second set of planet gears in meshing engagement with the second sun gear, and wherein at least some of the first set of planet gears and the second set of planet gears are in meshing engagement with one another; a planet carrier having lateral disks, wherein the planet gears are rotatably disposed in the planet carrier; and a coupling gear permanently connected to the planet carrier; wherein the lateral disks form a receiving housing having a housing interior, wherein at least one of the lateral disks has an installation hole through which the planet gears and the sun gears are insertable into the housing interior. ### Claim 12 (depends on 11) The differential of claim 11, wherein the lateral disks are materially bonded to the coupling gear. ### Claim 13 (depends on 12) The differential of claim 12, wherein the lateral disks are welded to the coupling gear at a circumference of the lateral disks. ### Claim 14 (depends on 11) The differential of claim 11, further comprising an end cap on one of the lateral installation disks and axially securing the second sun gear in a material bonded manner in relation to the axis. ### Claim 15 (depends on 14) The differential of claim 14, wherein the end cap supports a sliding bearing bushing configured to support the second sun gear. ### Claim 16 (depends on 11) The differential of claim 11, further comprising a first planet gear pin and a second planet gear pin, wherein the first and second planet gear pins support the planet gears and are secured in the receiving housing in a form fitting manner. ### Claim 17 (depends on 11) The differential of claim 11, wherein the coupling gear is coaxial to the axis.