Electrical and mechanical coil system for dual and single action solenoids

• US 20030094535A1
• Filed: 11/20/2001
• Published: 05/22/2003
• Est. Priority Date: 11/20/2001
• Status: Active Grant

• Current Assignee: Trumpet Holdings, Inc. (Standard Motor Products Incorporated)
• Original Assignee: Trombetta, LLC
• Inventors: Schmidt, Stephen M.
• Granted Patent: US 6,598,824 B2
• Time in Patent Office: Days
• US Class Current: 242/603
• CPC Class Codes: B65H 75/14 with two end flanges
• CPC Class Codes: B65H 75/28 Arrangements for positively securing ends of material
• CPC Class Codes: H01F 5/02 wound on non-magnetic supports, e.g. formers
• CPC Class Codes: H01F 5/04 Arrangements of electric connections to coils, e.g. leads

Abstract

A coil bobbin structure comprising a series of axially spaced bobbin members including integrally formed tubular base portions supported on a tubular support member. The base portions each have edges facing one another and including stepped edged portions cooperating to provide interlocking means for resisting relative rotation of the bobbin members and the tubular support member. The bobbin members each include radially extending flanges arranged to receive entering and exiting coil lead wires and to route the lead wires along a longitudinal path extending across a coil wound on the structure.

Claims

1. A coil bobbin structure including a pair of coaxially spaced coils and comprising:

a tubular support member;

a pair of coaxial spaced coil bobbin members and at least one coaxially spaced metallic washer located between each of said bobbin members, each of said bobbin members and said metallic washer being circumferentially supported by said tubular support member;

one of said bobbin members comprising a first pair of bobbin members, each of said bobbin members further including a radially extending flange portion, the flange portion of said first pair of bobbin members being seated adjacent said washer, said flange portion and said washer including interlocking means preventing relative rotation of said flange portion and said washer;

the other of said bobbin members including a second pair of bobbin members, and wherein the flange of said other bobbin member has an outer surface facing said washer and is in non-rotational relationship therewith, and a radial channel being formed in said flange for directing coil windings leads outwardly from said coil bobbin structure and for preventing rotational motion of said coil bobbin structure.

2. The coil bobbin structure of claim 1 wherein each of the flange portions of the bobbin members includes an angular slot substantially tangential to the tubular support member and arranged to receive and route the coil lead wire in a preferred direction away from the tubular support member.

3. The coil bobbin structure of claim 1 wherein each of the flange portions of the bobbin members includes circumferentially spaced, radially extending, break-away tabs arranged for temporarily retaining the starting end portion of the coil lead wire.

4. The coil bobbin member of claim 1 wherein each bobbin member further includes a spacer, said spacer being located between said pair of bobbin members.

5. A coil bobbin structure including a pair of coaxially spaced coils and comprising:

a tubular support member;

a pair of coaxial spaced coil bobbin members and at least one coaxially spaced metallic washer located between each of said bobbin members, each of said bobbin members and said metallic washer being circumferentially supported by said tubular support member;

one of said bobbin members including a radially extending flange portion, the flange portion of said first bobbin member being seated adjacent said washer, said flange portion and washer including interlocking means preventing relative rotation of said flange portion and said washer;

the flange of said other bobbin member having an outer surface facing said washer and is in non-rotational relationship therewith, and a radial channel being formed in said flange for directing coil windings leads outwardly from said coil bobbin structure.

6. The coil bobbin structure of claim 5 wherein each of the flange portions of the bobbin members includes an angular slot substantially tangential to the tubular support member and arranged to receive and route the coil lead wire in a preferred direction away from the tubular support member.

7. The coil bobbin structure of claim 5 wherein each of the flange portions of the bobbin members includes circumferentially spaced, radially extending, break-away tabs arranged for temporarily retaining the starting end portion of the coil lead wire.

8. The coil bobbin member of claim 5 wherein each bobbin member comprises a pair of bobbin members and further includes a spacer, said spacer being located between said pair of bobbin members.

9. A coil bobbin structure including a pair of coaxially spaced coils and comprising:

a tubular support member;

a pair of coaxially spaced coil bobbin members and at least one coaxially spaced metallic washers located between each of said bobbin members, each of said bobbin members and said metallic washer being circumferentially supported by said tubular support member;

a coil wound upon each of said coil bobbin members and having a coil anchoring lead wire and an ending lead wire;

one of said bobbin members comprising a first pair of bobbin members, each of said bobbin members further including a radially extending flange portion, the flange portion of said first pair of bobbin members being seated adjacent said washer, said flange portion and each of the washers including interlocking means preventing relative rotation of said flange portion and each of said washer;

the other of said bobbin members including a second pair of bobbin members, and wherein the flange of said other bobbin member has an outer surface facing said washer and is in non-rotational relationship therewith, and a radial channel being formed in said flange for directing coil windings leads outwardly from said coil bobbin structure.

10. The coil bobbin structure of claim 9 wherein each of the flange portions of the bobbin members includes an angular slot substantially tangential to the tubular support member and arranged to receive and route the coil lead wire in a preferred direction away from the tubular support member.

11. The coil bobbin structure of claim 9 wherein each of the flange portions of the bobbin members includes circumferentially spaced, radially extending, breakaway tabs arranged for temporarily retaining the starting end portion of the coil lead wire.

12. The coil bobbin structure of claim 9 wherein each of the washers are made of magnetic material.

13. The coil bobbin structure of claim 9 wherein the tubular support member is made of nonmagnetic material.

14. The coil bobbin structure of claim 9 wherein each of the bobbin members have facing edges defining a stepped configuration and wherein the facing steps of respective bobbin members are interlocked with one another to resist relative rotational movement of the facing bobbin members and with the said tubular support member.

15. The coil bobbin structure of claim 9 wherein the end flange of said one of said bobbin members includes an outwardly facing surface defining a labyrinth of radially spaced grooves for respectively receiving the ending lead wires of each of said coil members.

16. The coil bobbin structure of claim 15 wherein said end flange further includes a peripheral entrance notch communicating with one end of said radially spaced grooves and a peripheral, radially extending exit grommet communicating with opposite end of said radially spaced grooves.

17. The coil bobbin structure of claim 15 wherein said end flange includes a protective cover plate.

18. The coil bobbin structure of claim 15 wherein said end flange includes a protective cover plate having a substantially identical configuration and overhangs said end flange.