IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0101587
(2005-04-08)
|
| 등록번호 |
US-7289012
(2007-10-30)
|
|
발명자
/ 주소 |
- Tran Ngoc,Truc
- Bennett,Christopher
|
| 출원인 / 주소 |
- Polymer Technologies Inc.
|
| 인용정보 |
피인용 횟수 :
8 인용 특허 :
26 |
초록
▼
An electromagnetic coil assembly is provided. The electromagnetic coil assembly includes a bobbin, a coil of magnet wire and a cover piece. The bobbin includes a hub, a first flange and a second flange. The hub has a longitudinal axis. The first and second flanges are spaced axially from each other.
An electromagnetic coil assembly is provided. The electromagnetic coil assembly includes a bobbin, a coil of magnet wire and a cover piece. The bobbin includes a hub, a first flange and a second flange. The hub has a longitudinal axis. The first and second flanges are spaced axially from each other. The hub and flanges together define a circumferential bobbin channel. The bobbin is made from a material that is an electrical insulator. The coil of magnet wire is positioned around the hub in the circumferential bobbin channel. The magnet wire has first and second ends. The cover piece is self-supporting and is sized to extend circumferentially around the coil of magnet wire. The cover piece is resilient and exerts a compressive force radially inwardly on the coil of magnet wire.
대표청구항
▼
The invention claimed is: 1. An electromagnetic coil assembly comprising: a bobbin, including a hub, a first flange and a second flange, wherein the hub has a longitudinal axis, wherein the first and second flanges are spaced axially from each other, wherein the hub and the flanges together define
The invention claimed is: 1. An electromagnetic coil assembly comprising: a bobbin, including a hub, a first flange and a second flange, wherein the hub has a longitudinal axis, wherein the first and second flanges are spaced axially from each other, wherein the hub and the flanges together define a circumferential bobbin channel, wherein the bobbin is made from a material that is an electrical insulator; a coil of magnet wire around the hub in the circumferential bobbin channel, wherein the magnet wire has first and second ends; first and second connectors, wherein each connector retains and electrically connects one end of the magnet wire and one end of a lead wire; a cover piece, wherein the cover piece is self-supporting and extends circumferentially around the coil of magnet wire; and a connector housing, wherein the connector housing is connected to the cover piece, wherein the connector housing has at least one connector housing channel, wherein the first and second connectors are held in the at least one connector housing channel, wherein the at least one connector housing channel has first and second end walls which prevent withdrawal of the first and second connectors from the connector housing, wherein the connector housing includes a first connector housing portion and a second connector housing portion hingedly connected to the first connector housing portion, and wherein the first and second connector housing portions are matable together to enclose the connectors. 2. An electromagnetic coil assembly as claimed in claim 1, wherein the bobbin, coil of magnet wire, first and second connectors, cover piece and connector housing make up a subassembly, and wherein the electromagnetic coil assembly further comprises a yoke, wherein the yoke is made from a ferromagnetic material, wherein the yoke defines an open, circumferential yoke channel, wherein the yoke channel is sized to receive the subassembly by axial sliding movement of the subassembly into the yoke channel, wherein the first connector housing portion is connected to the cover piece, and wherein the second connector housing portion includes a connector housing locking tab that is positioned radially in from the radially outer wall of the yoke and that engages the radially outer wall of the yoke to limit movement of the second connector housing portion radially outwardly. 3. An electromagnetic coil assembly, comprising: a bobbin, including a hub, a first flange and a second flange, wherein the hub has a longitudinal axis, wherein the first and second flanges are spaced axially from each other, wherein the hub and the flanges together define a circumferential bobbin channel, wherein the bobbin is made from a material that is an electrical insulator; a coil of magnet wire around the hub in the circumferential bobbin channel, wherein the magnet wire has first and second ends; first and second connectors, wherein each connector retains and electrically connects one end of the magnet wire and one end of a lead wire; a cover piece, wherein the cover piece is self-supporting and extends circumferentially around the coil of magnet wire; and a connector housing, wherein the connector housing is connected to the cover piece, wherein the connector housing holds the first and second connectors, wherein the bobbin, coil of magnet wire, first and second connectors, cover piece and connector housing make up a subassembly; and a yoke, wherein the yoke is made from a ferromagnetic material, wherein the yoke defines an open, circumferential yoke channel, wherein the yoke channel is sized to receive the subassembly by axial sliding movement of the subassembly into the yoke channel, wherein the bobbin is rotatable with respect to the cover piece and the yoke when the subassembly is positioned in the yoke channel, wherein at least one locating feature is connected to the cover piece, wherein the at least one locating feature cooperates with the yoke to fix the position of the cover piece and connector housing circumferentially in the yoke. 4. An electromagnetic coil assembly as claimed in claim 3, wherein the channel has a radially outer wall, wherein the radially outer wall has an aperture therethrough, wherein the aperture is sized to receive the connector housing during axial sliding movement of the subassembly into the yoke channel, and wherein the aperture and the connector housing cooperate to fix the cover piece and connector housing circumferentially in the yoke. 5. An electromagnetic coil assembly as claimed in claim 4, wherein the cover piece includes a cover piece connector, and wherein the yoke includes a yoke connector and wherein the cover piece connector engages the yoke connector to retain the subassembly in the yoke. 6. An electromagnetic coil assembly as claimed in claim 5, wherein the cover piece connector includes at least one cover piece tab, and wherein the yoke connector includes at least one recess, wherein the at least one tab engages the recess to retain the cover piece, bobbin and magnet wire in the yoke. 7. An electromagnetic coil assembly as claimed in claim 6, wherein the recess extends only partially through the outer wall of the yoke.
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