Electromagnet device and electromagnetic relay using the same

• US 9,437,382 B2
• Filed: 07/17/2014
• Issued: 09/06/2016
• Est. Priority Date: 08/23/2013
• Status: Active Grant

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: Kato, Tatsuro, Yamamoto, Masaaki, Murakami, Kazuya, Tsujikawa, Kazuki, Narimatsu, Daisuke, Matsuo, Shinya, Kitaguchi, Harumichi, Sumino, Toshifumi
• Primary Examiner(s): Ismail, Shawki S
• Assistant Examiner(s): HOMZA, LISA NHUNG
• Application Number:
  US14/334,560
• Publication Number:
  US 20150054603A1
• Time in Patent Office: 782 Days
• Field of Search: 335/78
• US Class Current: 1/1
• CPC Class Codes: H01F 5/04 Arrangements of electric connections to coils, e.g. leads
• CPC Class Codes: H01H 2050/446 Details of the insulating support of the coil, e.g. spool, bobbin, former
• CPC Class Codes: H01H 50/443 Connections to coils

Abstract

An electromagnet device has a spool having a guard portion at at least one end thereof, a coil wound around a body portion of the spool, and a coil terminal press-fitted in the guard portion. A lead wire of the coil is tied up to a tying-up portion of the coil terminal projected from the guard portion. The tying-up portion is folded toward the guard portion of the spool after the lead wire of the coil is tied up to the tying-up portion of the coil terminal extending in a direction receding from the spool.

Claims

1. An electromagnet device comprising:

a spool comprising a guard portion at at least one end thereof;

a coil wound around a body portion of the spool; and

a coil terminal press-fitted in the guard portion,

wherein a lead wire of the coil is tied up to a tying-up portion of the coil terminal projected from the guard portion,

wherein the tying-up portion is folded toward the guard portion of the spool with the lead wire of the coil is tied up to the tying-up portion extending in a direction perpendicular to a lengthwise direction of the spool,

wherein the guard portion of the spool is provided with, on both sides of the coil being wound, at least one inclined surface inclined toward the coil terminal, and

wherein the lead wire of the coil tied up to the tying-up portion is drawn out along the inclined surface.

2. The electromagnet device according to claim 1, wherein a step is provided between a press-fitting portion of the coil terminal and a terminal portion of the coil terminal such that the terminal portion is protruded more than the press-fitting portion toward a direction receding from the spool.

3. The electromagnet device according to claim 2, wherein the guard portion of the spool is provided with, on both sides of the coil being wound, at least one inclined surface inclined toward the coil terminal.

4. The electromagnet device according to claim 2, wherein an edge of the guard portion of the spool is provided with, at a position adjacent to the folded tying-up portion of the coil terminal, a detour projection in which the lead wire of the coil can be latched.

5. An electromagnetic relay comprising the electromagnet device according to claim 2.

6. The electromagnet device according to claim 1, wherein a projection projected in the direction receding from the spool is provided in the press-fitting portion.

7. The electromagnet device according to claim 6, wherein the guard portion of the spool is provided with, on both sides of the coil being wound, at least one inclined surface inclined toward the coil terminal.

8. The electromagnet device according to claim 6, wherein an edge of the guard portion of the spool is provided with, at a position adjacent to the folded tying-up portion of the coil terminal, a detour projection in which the lead wire of the coil can be latched.

9. An electromagnetic relay comprising the electromagnet device according to claim 6.

10. The electromagnet device according to claim 1, wherein an edge of the guard portion of the spool is provided with, at a position adjacent to the folded tying-up portion of the coil terminal, a detour projection in which the lead wire of the coil can be latched.

11. An electromagnetic relay comprising the electromagnet device according to claim 10.

12. An electromagnetic relay comprising the electromagnet device according to claim 1.

13. The electromagnet device according to claim 1, wherein a projection projected in the direction receding from the spool is provided in the press-fitting portion.