# US 11,444,422 B2 · Rotary connector device and fixed body of rotary connector device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,422 B2 - Document ID: US11444422B2 - Status: Granted - Kind: B2 - Application number: 17/109,149 - Filed: 2020-12-02 - Published: 2021-03-25 - Granted: 2022-09-13 - Earliest claimed: 2018-06-11 - Assignees: Furukawa Electric Co., Ltd.; Furukawa Automotive Systems Inc. - Applicants: Furukawa Electric Co., Ltd.; Furukawa Automotive Systems Inc. - Inventors: Satoshi Kitao; Shingo Nambu; Kenji Yoshimura - Web page: https://patentgrep.com/patent/US11444422B2 ## CPC - H01R 35/025: {having a flexible conductor wound around a rotation axis} - H01R 13/639: Additional means for holding or locking coupling parts together, after engagement, {e.g. separate keylock, retainer strap} - B60R 16/027: between relatively movable parts of the vehicle, e.g. between steering wheel and column {(devices for measuring, signalling or controlling tyre pressure or temperature specially adapted for mounting on vehicles B60C23/00)} - H01R 2201/26: for vehicles - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract A rotary connector device includes a fixed body and a rotation body. The fixed body includes an internal space. The rotation body is rotatably assembled to the fixed body about a rotational axis with respect to the fixed body. The fixed body includes an inserted portion into which a fixing tool is to be inserted to restrict the fixed body and the rotation body from rotating relative to each other. The inserted portion includes an inner space isolated from the internal space of the fixed body. ## Claims ### Claim 1 A rotary connector device comprising: a fixed body comprising an internal space; a rotation body rotatably assembled to the fixed body about a rotational axis with respect to the fixed body; the fixed body comprising an inserted portion into which a fixing tool is to be inserted to restrict the fixed body and the rotation body from rotating relative to each other; and the inserted portion comprising an inner space isolated from the internal space of the fixed body, the fixed body comprising a first wall substantially perpendicular to the rotational axis, and a second wall disposed at a distance from the first wall in an axial direction substantially parallel to the rotational axis, the internal space of the fixed body being provided between the first wall and the second wall, the inserted portion comprising a first opening provided in the first wall, the inserted portion comprising a second opening provided in the second wall, an area of the first opening being substantially identical to an area of the second opening, the fixed body comprising a first fixed body portion and a second fixed body portion coupled to the first fixed body portion, the first fixed body portion comprising a third wall extending from an outer edge of the first opening in the axial direction, and the second fixed body portion comprising a fourth wall extending from an outer edge of the second opening in the axial direction, the third wall and the fourth wall being in contact with each other in a direction substantially orthogonal to the rotational axis. ### Claim 2 (depends on 1) The rotary connector device according to claim 1, wherein the inserted portion penetrates the fixed body in an axial direction substantially parallel to the rotational axis. ### Claim 3 (depends on 1) The rotary connector device according to claim 1, further comprising: a conductor disposed in the fixed body in the internal space, wherein the fourth wall comprises a wall portion disposed at a distance from the conductor, and the third wall is covered by the wall portion in a direction substantially orthogonal to the rotational axis. ### Claim 4 (depends on 3) The rotary connector device according to claim 3, wherein a clearance between the third wall and the fourth wall is closer to the second opening than to the first opening in the axial direction. ### Claim 5 (depends on 1) The rotary connector device according to claim 1, wherein a clearance between the third wall and the fourth wall is closer to the second opening than to the first opening in the axial direction. ### Claim 6 A rotary connector device comprising: a fixed body comprising an internal space; a rotation body rotatably assembled to the fixed body about a rotational axis with respect to the fixed body; the fixed body comprising an inserted portion into which a fixing tool is to be inserted to restrict the fixed body and the rotation body from rotating relative to each other; and the inserted portion comprising an inner space isolated from the internal space of the fixed body, wherein the fixed body comprises a first wall substantially perpendicular to the rotational axis, and a second wall disposed at a distance from the first wall in an axial direction substantially parallel to the rotational axis, the inserted portion comprises a first opening provided in the first wall, the fixed body comprises a third wall extending from an outer edge of the first opening in the axial direction and connected to the second wall, and the third wall and the first wall are formed of a single member. ### Claim 7 (depends on 1) The rotary connector device according to claim 1, further comprising the fixing tool. ### Claim 8 (depends on 1) The rotary connector device according to claim 1, wherein the inserted portion is surrounded by the internal space. ### Claim 9 A fixed body of a rotary connector device, comprising: a fixed body main body to be assembled to a rotation body rotatable about a rotational axis; an extending portion comprising an internal space and connected to the fixed body main body; a first wall substantially perpendicular to the rotational axis; and a second wall disposed at a distance from the first wall in an axial direction substantially parallel to the rotational axis, the extending portion comprising an inserted portion into which a fixing tool is to be inserted to restrict the fixed body main body and the rotation body from rotating relative to each other, the inserted portion comprising an inner space isolated from the internal space of the extending portion, the internal space of the fixed body being provided between the first wall and the second wall, the inserted portion comprising a first opening provided in the first wall, the inserted portion comprising a second opening provided in the second wall, an area of the first opening being substantially identical to an area of the second opening, the fixed body main body comprising a first fixed body portion and a second fixed body portion coupled to the first fixed body portion, the first fixed body portion comprising a third wall extending from an outer edge of the first opening in the axial direction, and the second fixed body portion comprising a fourth wall extending from an outer edge of the second opening in the axial direction, the third wall and the fourth wall being in contact with each other in a direction substantially orthogonal to the rotational axis.