[특허]Magnetically latching two position actuator and a clutched device having a magnetically latching two position actuator

American Axle & Manufacturing, Inc.

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Magnetically latching two position actuator and a clutched device having a magnetically latching two position actuator

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01F-007/00 H01F-007/16 H01F-007/122 H01F-007/08
출원번호	US-0270035 (2016-09-20)
등록번호	US-9899132 (2018-02-20)
발명자 / 주소	Gilmore, Curt D.
출원인 / 주소	American Axle & Manufacturing, Inc.
대리인 / 주소	Harness, Dickey & Pierce, P.L.C.
인용정보	피인용 횟수 : 0 인용 특허 : 29

초록
▼

An actuator can include a housing, core assembly, and first and second electromagnets. The housing can have a first pole piece, second pole piece, and central pole piece disposed between the first and second pole pieces. The central pole piece can have a central body and a bridge. The bridge can be between the first and second pole pieces and axially movable relative thereto. The core assembly can be received in the housing. The core assembly can be movable along a first axis between a first core position and a second core position. The core assembly can include a permanent magnet, a first core, and a second core. The first and second cores can be coupled to the permanent magnet for common axial movement. The first and second electromagnets can be spaced axially apart by the central body and can have opposite polarities.

대표
청구항
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1. An actuator comprising: a housing having a first pole piece, a second pole piece, and a central pole piece disposed between the first and second pole pieces, the central pole piece having a central body and a bridge, the bridge having a first base, a second base, and a span that extends between the first and second bases;a core assembly received in the housing and being movable relative to the bridge along a first axis between a first core position and a second core position, the core assembly including a permanent magnet, and first and second cores coupled for common axial movement with the permanent magnet, the first and second cores being spaced axially apart along the first axis by the permanent magnet; andfirst and second electromagnets that are spaced axially apart by the central pole piece, the first and second electromagnets having opposite polarities;wherein the bridge extends radially inward of an outermost portion of the first core and radially inward of an outer most portion of the second core, and the central body is axially between the first and second electromagnets; andwherein the first base is radially inward of the first electromagnet and axially overlaps with a portion of the first electromagnet, and the second base is radially inward of the second electromagnet and axially overlaps with a portion of the second electromagnet. 2. The actuator of claim 1, further comprising a plunger and a spring, the plunger being axially movable relative to the core assembly between a first plunger position and a second plunger position, wherein the spring is configured to bias the plunger toward the first plunger position when the core assembly is in the first core position, and wherein the spring is configured to bias the plunger toward the second plunger position when the core assembly is in the second core position. 3. The actuator of claim 2, further comprising a rod member and a tube, the rod member being disposed about the first axis and slidably received through a central aperture of the core assembly, the tube being fixedly coupled to the plunger for common translation with the plunger and surrounding the spring and a portion of the rod member. 4. The actuator of claim 2, further comprising a first element, a second element, a first sensor, a first target, a second sensor, and a second target, wherein the first element and second elements are axially fixed relative to the housing, wherein one of the first sensor and first target is coupled to the plunger for common axial translation with the plunger, and the other of the first sensor and first target is coupled to the first element, wherein one of the second sensor and second target is coupled to the core assembly for common axial translation with the core assembly, and the other of the second sensor and second target is coupled to the second element. 5. The actuator of claim 1, wherein the housing further includes a case radially outward of the first and second electromagnets, and wherein the first and second cores, the first and second pole pieces, the central pole piece, and the case are formed of ferromagnetic materials. 6. The actuator of claim 1, wherein the bridge is slidable relative to the central body between a first bridge position and a second bridge position. 7. The actuator of claim 6, wherein when the bridge is in the first bridge position, the first base is a first distance from the first pole piece and when the bridge is in the second bridge position, the first base is a second distance from the first pole piece, the second distance being greater than the first distance. 8. An actuator comprising: a housing having a first pole piece, a second pole piece, and a central pole piece that is disposed between the first and second pole pieces, the central pole piece having a central body and a bridge, the bridge being disposed between the first and second pole pieces and axially movable relative to the first and second pole pieces;a core assembly received in the housing, the core assembly being movable relative to the bridge along a first axis between a first core position and a second core position, the core assembly including a permanent magnet, a first core, and a second core, the first and second cores being coupled to the permanent magnet for common axial movement; andfirst and second electromagnets that are spaced axially apart by the central body, the first and second electromagnets having opposite polarities. 9. The actuator of claim 8, wherein the housing further includes a case radially outward of the first and second coils, and wherein the first and second cores, the first and second pole pieces, the central pole piece, and the case are ferromagnetic. 10. The actuator of claim 8, wherein the bridge has a first base, a second base, and a span that extends between the first and second bases, the first base being radially inward of the first coils and axially overlapping with a portion of the first coils, the second base being radially inward of the second coils and axially overlapping with a portion of the second coils. 11. The actuator of claim 10, wherein the bridge is slidable relative to the central body between a first bridge position and a second bridge position, and wherein the first base is a first distance from the first pole piece when the bridge is in the first bridge position, and wherein the first base is a second distance from the first pole piece when the bridge is in the second bridge position, the second distance being greater than the first distance. 12. The actuator of claim 8, further comprising a plunger and a spring, the plunger being movable between a first plunger position and a second plunger position, wherein the spring is configured to bias the plunger toward the first plunger position when the core assembly is in the first core position, and wherein the spring is configured to bias the plunger toward the second plunger position when the core assembly is in the second core position. 13. The actuator of claim 12, further comprising a rod member and a tube, the rod member being disposed about the first axis and slidably received through a central aperture of the core assembly, the tube being fixedly coupled to the plunger for common translation with the plunger and surrounding the spring and a portion of the rod member. 14. The actuator of claim 12, further comprising a first element, a second element, a first sensor, a first target, a second sensor, and a second target, wherein the first element and second elements are axially fixed relative to the housing, wherein one of the first sensor and first target is coupled to the plunger for common axial translation with the plunger, and the other of the first sensor and first target is coupled to the first element, wherein one of the second sensor and second target is coupled to the core assembly for common axial translation with the core assembly, and the other of the second sensor and second target is coupled to the second element. 15. The actuator of claim 1, wherein when the core assembly is in the first core position, the first core contacts the first base and the second core is spaced apart from the second base, and when the core assembly is in the second core position, the first core is spaced apart from the first base and the second core contacts the second base. 16. The actuator of claim 8, wherein when the core assembly is in the first core position, the first core contacts the bridge and the second core is spaced apart from the bridge, and when the core assembly is in the second core position, the first core is spaced apart from the bridge and the second core contacts the bridge.

이 특허에 인용된 특허 (29)

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특허 상세정보

Magnetically latching two position actuator and a clutched device having a magnetically latching two position actuator

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이 특허에 인용된 특허 (29)

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Magnetically latching two position actuator and a clutched device having a magnetically latching two position actuator

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이 특허에 인용된 특허 (29)

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상세정보조회

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IPC 상세정보(version : 201201)

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