# US 2022/0044899 A1 · Contactor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0044899 A1 - Document ID: US20220044899A1 - Status: Published application - Kind: A1 - Application number: 17/392,726 - Filed: 2021-08-03 - Published: 2022-02-10 - Earliest claimed: 2020-08-07 - Assignees: Tyco Electronics (Shanghai) Co., Ltd. - Applicants: Tyco Electronics (Shanghai) Co. Ltd. - Inventors: Teng Zou; Xiaoning Zhang - Web page: https://patentgrep.com/patent/US20220044899A1 ## CPC - H01H 50/546: {for contactors having bridging contacts} - H01H 50/60: moving contact being rigidly combined with movable part of magnetic circuit {(for polarised relays H01H51/2254, H01H51/2281)} - H01H 1/2041: {Rotating bridge} - H01H 9/34: Stationary parts for restricting or subdividing the arc, e.g. barrier plate - H01H 9/443: {using permanent magnets} - H01H 1/62: Heating or cooling of contacts - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) ## Abstract A contactor includes two static contacts and a movable contact. Two ends of the movable contact selectively electrically contact the two static contacts, respectively. The contactor further includes a rotatable member rotatable about a central axis, with the movable contact being mounted thereon. The rotatable member is rotatably mounted on a support plate. Two ceramic members are mounted on the support plate, with each defining an internal region. Two permanent magnets are mounted on the support plate and located outside of the two ceramic members, respectively. The two ends of the movable contact are located in respective internal regions of the two ceramic members, such that an electrical arc generated between the movable contact and the static contact is located within the internal region. ## Claims ### Claim 1 A contactor, comprising: two static contacts; a movable contact having two ends for contacting the two static contacts, respectively; a support plate; a rotatable member rotatably mounted about a central axis on the support plate, the movable contact being mounted on the rotatable member; two ceramic members mounted on the support plate, each of the two ceramic members defining an internal region, the two ends of the moveable contact being located in respective ones of the internal regions of the two ceramic members; and two permanent magnets mounted on the support plate and located outside of the two ceramic members, respectively. ### Claim 2 (depends on 1) The contactor according to claim 1, wherein each of the ceramic members includes a bottom wall, a top wall, and a side wall located between the bottom wall and the top wall, the internal region is defined by the bottom wall, the top wall and the side wall. ### Claim 3 (depends on 2) The contactor according to claim 2, wherein the bottom wall of each ceramic member is fixed on a top surface of the support plate. ### Claim 4 (depends on 2) The contactor according to claim 2, wherein each of the two permanent magnets is abutted against an outer side surface of the side wall of a corresponding one of the ceramic members. ### Claim 5 (depends on 4) The contactor according to claim 4, wherein each of the permanent magnets has a height substantially equal to that of the side wall of the corresponding ceramic member. ### Claim 6 (depends on 4) The contactor according to claim 4, wherein each of the permanent magnets has a width substantially equal to that of the side wall of the corresponding ceramic member. ### Claim 7 (depends on 4) The contactor according to claim 4, wherein a top surface of the support plate includes two permanent magnet mounting chambers into which a respective one of the two permanent magnets is mounted. ### Claim 8 (depends on 7) The contactor according to claim 7, wherein each of the permanent magnet mounting chambers is defined by the side wall of a corresponding ceramic member and a protruding wall formed on the top surface of the support plate. ### Claim 9 (depends on 8) The contactor according to claim 8, wherein the side wall of each ceramic member forms a snap fit with the respective protruding wall of the support plate at two sides thereof. ### Claim 10 (depends on 8) The contactor according to claim 8, wherein the protruding walls of the support plate have a height substantially equal to that of the respective permanent magnet. ### Claim 11 (depends on 7) The contactor according to claim 7, wherein each of the permanent magnet mounting chambers has a rectangular cross-section and each of the permanent magnets is in a shape of a rectangular parallelepiped. ### Claim 12 (depends on 1) The contactor according to claim 1, wherein the rotatable member is rod shaped and passes through the support plate, and a top surface of the support plate is perpendicular to the central axis of the rotatable member. ### Claim 13 (depends on 1) The contactor according to claim 1, further comprising a stationary insulation member on which the two stationary contacts are fixed. ### Claim 14 (depends on 13) The contactor according to claim 13, further comprising two connection bolts fixed to the stationary member and electrically connected to the two stationary contacts, respectively. ### Claim 15 A contactor, comprising: a body; a first static contact and a second static contact fixed to the body; a movable contact rotatably attached to the body and having first and second ends for selectively electrically contacting the first and second static contacts, respectively; a first ceramic member and a second ceramic member each defining an internal region and mounted on the body, with the moveable contacts contacting the static contacts, the first and second ends of the moveable contact are arranged within in a respective one of the internal regions; and a first permanent magnet and a second permanent magnet mounted on the body and positioned outside of a respective one of the two ceramic members. ### Claim 16 (depends on 15) The contactor according to claim 15, wherein the internal regions are each defined by a bottom wall, a top wall, and a side wall of a respective ceramic member. ### Claim 17 (depends on 16) The contactor according to claim 16, wherein each of the first and second permanent magnets is abutted against an outer side surface of the side wall of a corresponding one of the first and second ceramic members. ### Claim 18 (depends on 15) The contactor according to claim 15, wherein the body includes: a support plate on which the moveable contact is rotatably mounted; and a stationary insulation member arranged above the support plate and the first and second ceramic members, and onto which the two stationary contacts are fixed. ### Claim 19 (depends on 18) The contactor according to claim 18, wherein a top surface of the support plate includes two permanent magnet mounting chambers into which a respective one of the first and second permanent magnets is mounted. ### Claim 20 (depends on 19) The contactor according to claim 19, wherein each of the permanent magnet mounting chambers is defined by a side wall of a corresponding ceramic member and a protruding wall formed on the top surface of the support plate.