IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0554667
(1983-11-23)
|
우선권정보 |
JP-0206441 (1982-11-25); JP-0206442 (1982-11-25); JP-0206443 (1982-11-25); JP-0206440 (1982-11-25) |
발명자
/ 주소 |
- Haneda, Hideo
- Yamanaka, Minoru
|
출원인 / 주소 |
- Aisin Seiki Kabushiki Kaisha
|
대리인 / 주소 |
Sughrue, Mion, Zinn, Macpeak & Seas
|
인용정보 |
피인용 횟수 :
11 인용 특허 :
4 |
초록
▼
A solenoid assembly comprising a magnetic plunger, an electric coil for generating a magnetic flux in a direction along an axis of the magnetic plunger, a main yoke composed of at least two separate members for defining a magnetic flux passage around the electric coil, and a pair of yoke end members
A solenoid assembly comprising a magnetic plunger, an electric coil for generating a magnetic flux in a direction along an axis of the magnetic plunger, a main yoke composed of at least two separate members for defining a magnetic flux passage around the electric coil, and a pair of yoke end members held in engagement respectively with opposite ends of the main yoke, an outer casing. The yoke end members have recesses extending substantially normally to the axis of the magnetic plunger, and the main yoke has projections fitted respectively in the recesses to maintain the main yoke and the yoke end members in engaging relationship. The outer casing has an inner wall keeping the main yoke held in engagement with the yoke end members. A leaf spring acts on the main yoke to hold the latter securely in place in the outer casing. The yoke end members have cylindrical projections supporting thereon the electric coil between the projections of the main yoke. Magnetic cores are firmly held against a permanent magnet by resilient members fitted in slots defined in outer peripheral surface of a plunger shaft.
대표청구항
▼
1. A solenoid assembly comprising: (a) a magnetic plunger; (b) an electric coil for generating a magnetic flux in a direction along an axis of said magnetic plunger; (c) a main yoke composed of at least two separate substantially identical members diametrically opposed relative to said plunger f
1. A solenoid assembly comprising: (a) a magnetic plunger; (b) an electric coil for generating a magnetic flux in a direction along an axis of said magnetic plunger; (c) a main yoke composed of at least two separate substantially identical members diametrically opposed relative to said plunger for defining a magnetic flux passage around said electric coil; (d) a pair of yoke end members held in engagement respectively with opposite ends of said main yoke; (e) an outer casing; (f) one of said main yoke and said yoke end members having recesses extending substantially normally to said axis of said magnetic plunger, with the other having projections fitted respectively in said recesses to maintain said main yoke and said yoke end members in engaging relationship; and (g) said outer casing having an inner wall keeping said main yoke held in engagement with said yoke end members. 2. A solenoid assembly according to claim 1, wherein said projections comprise locking fingers bent at a right angle from the opposite ends of a longitudinal portion of said main yoke in the axial direction of said coil, and defining partially circular openings, said recesses comprising annular grooves defined in peripheral surfaces of said yoke end members in circumferential alignment with said circular openings. 3. A solenoid assembly according to claim 1, wherein said main yoke comprises two separate members, said projections comprising locking fingers bent at a right angle from the opposite ends of a longitudinal portion of said main yoke in the axial direction of said coil, and defining partially circular openings, said recesses comprising annular grooves defined in peripheral surfaces of said yoke end members in circumferential alignment with said circular openings. 4. A solenoid assembly according to claim 3, wherein said main yoke has a longitudinally central aperture, said magnetic plunger comprising a permanent magnet, a pair of magnetic cores sandwiching said permanent therebetween, and a shaft on which said permanent magnet and magnetic cores are fixedly mounted, said electric coil comprising a pair of electric coils one disposed between a central plate having a portion inserted in said longitudinally central aperture and one of said locking fingers, and the other between said central plate and the other locking finger. 5. A solenoid assembly comprising: (a) a magnetic plunger; (b) an electric coil for generating a magnetic flux in a direction along an axis of said magnetic plunger; (c) a main yoke composed of at least two separate members for defining a magnetic flux passage around said electric coil; (d) a pair of yoke end members held in engagement respectively with opposite ends of said main yoke; (e) an outer casing; (f) spring means disposed in said outer casing for normally pushing at least one of said two separate members toward the other separate member; (g) one of said main yoke and said yoke end members having recesses extending substantially normally to said axis of said magnetic plunger, with the other having projections fitted respectively in said recesses to maintain said main yoke and said yoke end members in engaging relationship; and (g) said spring means imposing a force on said main yoke to keep the latter held in engagement with said yoke end members. 6. A solenoid assembly according to claim 5, wherein said projections comprise locking fingers bent at a right angle from the opposite ends of a longitudinal portion of said main yoke in the axial direction of said coil, and defining partially circular openings, said recesses comprising annular grooves defined in peripheral surfaces of said yoke end members in circumferential alignment with said circular openings. 7. A solenoid assembly according to claim 5, wherein said main yoke comprises two separate members, said projections comprising locking fingers bent at a right angle from the opposite ends of a longitudinal portion of said main yoke in the axial direction of said coil, and defining partially circular openings, said recesses comprising annular grooves defined in peripheral surfaces of said yoke end members in circumferential alignment with said circular openings. 8. A solenoid assembly according to claim 5, wherein said spring means comprises a leaf spring curved in its free state and disposed forcibly flatwise in a gap between said inner wall of said outer casing and a back of one of said two separate members of said main yoke. 9. A solenoid assembly according to claim 7, wherein said main yoke has a longitudinally central aperture, said magnetic plunger comprising a permanent magnet, a pair of magnetic cores sandwiching said permanent therebetween, and a shaft on which said permanent magnet and magnetic cores are fixedly mounted, said electric coil comprising a pair of electric coils one disposed between a central plate having a portion inserted in said longitudinally central aperture and one of said locking fingers, and the other between said central plate and the other locking finger. 10. A solenoid assembly according to claim 7, wherein said magnetic plunger comprises a permanent magnet, a pair of magnetic cores sandwiching said permanent magnet therebetween, a shaft, and resilient members, said shaft extending through holes in said permanent magnet and said resilient member and having recesses defined in outer peripheral surface thereof in the vicinity of said magnetic cores, said resilient members having portions engaging in said recesses and portions held against sides of said magnetic cores to push said magnetic cores against said permanent magnet. 11. A solenoid assembly comprising: (a) a magnetic plunger; (b) an electric coil for generating a magnetic flux in a direction along an axis of said magnetic plunger; (c) main yoke composed of at least two separate substantially identical members diametrically opposed relative to said plunger for defining a magnetic flux passage around said electric coil; (d) a pair of yoke end plates having cylindrical projections held in engagement respectively with ends of said main yoke; (e) an outer casing; (f) said yoke end members having recesses extending substantially normally to said axis of said magnetic plunger, said main yoke having projections fitted respectively in said recesses to maintain said main yoke and said yoke end members in engaging relationship; and (g) said electric coil being disposed radially outwardly of said cylindrical projections of said yoke end members and between projections of said main yoke at the ends thereof. 12. A solenoid assembly according to claim 11, wherein said projections comprise locking fingers bent at a right angle from the opposite ends of a longitudinal portion of said main yoke in the axial direction of said coil, and defining partially circular openings, said recesses comprising annular grooves defined in peripheral surfaces of said yoke end members in circumferential alignment with said circular openings. 13. A solenoid assembly according to claim 11, wherein said main yoke comprises two separate members, said projections comprising locking fingers bent at a right angle from the opposite ends of a longitudinal portion of said main yoke in the axial direction of said coil, and defining halves of circular openings, said recesses comprising annular grooves defined in peripheral surfaces of said yoke end members in circumferential alignment with said circular openings. 14. A solenoid assembly according to claim 11, wherein said electric coil comprises a fixedly shaped coil composed of an insulated wire coated with thermally fusible insulating material and wound into a coil, which is heated and fused. 15. A solenoid assembly according to claim 13, wherein said main yoke has a longitudinally central aperture, said magnetic plunger comprising a permanent magnet, a pair of magnetic cores sandwiching said permanent therebetween, and a shaft on which said permanent magnet and magnetic cores are fixedly mounted, said electric coil comprising a pair of electric coils one disposed between a central plate having a portion inserted in said longitudinally central aperture and one of said locking fingers, and the other between said central plate and the other locking finger, said central plate having annular projections supporting said coils. 16. A solenoid assembly according to claim 13, wherein said magnetic plunger comprises a permanent magnet, a pair of magnetic cores sandwiching said permanent magnet therebetween, a shaft, and resilient members, said shaft extending through holes in said permanent magnet and said resilient member and having recesses defined in outer peripheral surface thereof in the vicinity of said magnetic cores, said resilient members having portions engaging in said recesses and portions held against sides of said magnetic cores to push said magnetic cores against said permanent magnet. 17. A solenoid assembly comprising: (a) a permanent magnet having a hole and magnetized in a direction along a central axis of said hole (b) a pair of magnetic cores having holes and disposed on the sides of N and S poles of said permanent magnet; (c) a shaft extending through said holes in said permanent magnet and said magnetic cores and having recesses adjacent to outer sides of said magnetic cores; (d) resilient members having portions engaging in said recesses and portions held against sides of said magnetic cores to push the latter against said permanent magnet; (e) an electric coil for generating a magnetic flux in a direction along said shaft; and (f) a yoke for defining a magnetic flux passage around said electric coil. 18. A solenoid assembly according to claim 17, wherein said recesses comprise annular slots extending circumferentially around said shaft. 19. A solenoid assembly according to claim 18, wherein said resilient members have holes of a diameter smaller than that of other portions of said shaft than said slots, said holes in said resilient members being positioned in said slots in said shaft.
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