IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0321329
(2002-12-16)
|
우선권정보 |
IT-0000209 (2001-12-14) |
발명자
/ 주소 |
|
대리인 / 주소 |
Akin Gump Strauss Hauer &
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
13 |
초록
▼
Linear motor and method to make the same. The motor comprises an armature equipped with compartments (15) inside which are housed electric coils (16), and two fixed bars (22) cooperating with respective sides of the armature, on each of which are mounted permanent magnets (12) arranged facing said e
Linear motor and method to make the same. The motor comprises an armature equipped with compartments (15) inside which are housed electric coils (16), and two fixed bars (22) cooperating with respective sides of the armature, on each of which are mounted permanent magnets (12) arranged facing said electric coils (16). The armature (14) is made mainly of aluminium or of ceramic material. The armature (14) comprises interruptions (21) defining zones of electric discontinuity in cooperation the perimeter of the compartments (15) housing the coils (16).
대표청구항
▼
1. A linear motor comprising an armature having first and second sides and equipped with a plurality of compartments (15) inside of which are stably housed respective electric coils (16), the motor including two fixed bars (22), each bar cooperating with the first or second side, respectively, of sa
1. A linear motor comprising an armature having first and second sides and equipped with a plurality of compartments (15) inside of which are stably housed respective electric coils (16), the motor including two fixed bars (22), each bar cooperating with the first or second side, respectively, of said armature, each bar having a plurality of permanent magnets (12) mounted thereto and arranged, during use, facing said electric coils (16), wherein said armature (14) is made mainly of aluminium or its alloys, or of ceramic material, said armature (14) including interruptions (21) defining zones of electric discontinuity which cooperate at least with the perimeter of said compartments (15) housing the coils (16).2. The linear motor of claim 1, wherein said interruptions (21) are formed on at least a lateral segment of a relative housing compartment (15).3. The linear motor of claim 1, wherein said interruptions (21) are formed on at least an upper or lower segment of a relative housing compartment (15).4. The linear motor of claim 1, wherein said armature (14) is formed from at least two half-bodies (18a, 18b) which are coupled together.5. The linear motor of claim 4, wherein said half-bodies (18a, 18b) are coupled in a substantially vertical plane.6. The linear motor of claim 4, wherein said half-bodies (18a, 18b) are coupled in a substantially horizontal plane.7. The linear motor of claim 4, wherein said half-bodies (18a, 18b) are substantially specular, each half body defining a half of said armature (14).8. The linear motor of claim 4, wherein said half-bodies (18a, 18b), once coupled, define casting fissures (19) into which an insulating material in a liquid or molten state is cast.9. The linear motor of claim 8, wherein said insulating material is a polymerizable resin.10. The linear motor of claim 1, wherein said armature (14) is configured to contain a number of coils equal to a multiple of two (16a, 16b), the coils being adjacent each other on a plane transverse to the direction of movement.11. The linear motor of claim 10, wherein the coils (16a, 16b) are formed by continuously winding a conductor (17).12. The linear motor of claim 11, wherein said conductor (17) has respective first and second ends (17a, 17b) for input/output of current, each of said first and second ends (17a, 17b) emerging from the outer periphery of the coils (16a, 16b), respectively, and being contained within the lateral plane of each respective coil (16a, 16b).13. The linear motor of claim 1, wherein said armature (14) includes at least one module defining a plurality of compartments (15) configured to house respective coils (16) aligned in the direction of movement, the longitudinal development of said module being such as to cover an even number of permanent magnets (12).14. The linear motor of claim 13, wherein said at least one module houses a number of coils (16) equal to a multiple of two.15. The linear motor of claim 13, wherein said at least one module houses a number of coils (16) equal to a multiple of three.16. The linear motor of claim 1, wherein a distance “p” between two adjacent compartments (15) is equal to or less than the distance between two adjacent permanent magnets (12).17. A method of manufacturing an electric motor including an armature having first and second sides and equipped with a plurality of compartments (15) configured to stably house respective electric coils (16) therein, the motor including two fixed bars (22), each bar cooperating with the respective first or second side of said armature, the bars having a plurality of permanent magnets (12) mounted thereto and arranged, during use, facing said electric coils (16), the method comprising: forming said armature (14) from at least two mateable bodies (18a, 18b) made substantially of aluminium or its alloys or of ceramic material, said bodies configured to be coupled together and defining, once assembled, the plurality of compartments (15), casting an insulating and binding material (20) such as a polymerizable resin in its liquid or molten state into fissures (19) defined between said at least two mateable bodies (18a, 18b), and polymerizing said insulating and binding material, the armature functioning as a mold for the casting and polymerization of said insulating and binding material (20).18. The method of claim 17, wherein said polymerization is performed cold.19. The method of claim 17, wherein said polymerization is performed hot.
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