# US 9,437,382 B2 · Electromagnet device and electromagnetic relay using the same

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- Number: US 9,437,382 B2
- Document ID: US9437382B2
- Status: Granted
- Kind: B2
- Application number: 14/334,560
- Filed: 2014-07-17
- Published: 2015-02-26
- Granted: 2016-09-06
- Earliest claimed: 2013-08-23
- Assignees: OMRON Corporation
- Applicants: OMRON Corporation
- Inventors: Tatsuro Kato; Masaaki Yamamoto; Kazuya Murakami; Kazuki Tsujikawa; Daisuke Narimatsu; Shinya Matsuo; Harumichi Kitaguchi; Toshifumi Sumino
- Web page: https://patentgrep.com/patent/US9437382B2

## CPC

- H01H 50/443: {Connections to coils}
- H01F 5/04: Arrangements of electric connections to coils, e.g. leads
- H01H 2050/446: {Details of the insulating support of the coil, e.g. spool, bobbin, former}
- H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## 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

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 2)

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.

### Claim 4 (depends on 2)

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.

### Claim 5 (depends on 2)

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

### Claim 6 (depends on 1)

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.

### Claim 7 (depends on 6)

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.

### Claim 8 (depends on 6)

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.

### Claim 9 (depends on 6)

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

### Claim 10 (depends on 1)

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.

### Claim 11 (depends on 10)

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

### Claim 12 (depends on 1)

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

### Claim 13 (depends on 1)

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.