# US 2013/0154788 A1 · Coil component

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- Number: US 2013/0154788 A1
- Document ID: US20130154788A1
- Status: Published application
- Kind: A1
- Application number: 13/692,300
- Filed: 2012-12-03
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: Sumida Corporation
- Inventors: Yasunori MORIMOTO; Masakazu FUKUOKA
- Web page: https://patentgrep.com/patent/US20130154788A1

## CPC

- H01F 5/00: Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00)
- H01Q 1/273: {Adaptation for carrying or wearing by persons or animals}
- H01Q 7/08: Ferrite rod or like elongated core
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A coil component includes: a bar-like core; and a winding part formed of a conducting wire that is wound in a plurality of layers around the outer periphery of the core according to a solenoidal winding method. Winding collapse preventing shifts D1 to D4 each corresponding to a plurality of turns between an end part of a lower winding layer and an end part of an upper winding layer are respectively set to both end parts in the winding width direction of winding layers of the winding part. In transitioning from the lower winding layer to the upper winding layer, the conducting wire is turned back from the end part of the lower winding layer, and is obliquely wound in a small number of turns across each winding collapse preventing shift corresponding to the plurality of turns, and dense winding of the upper winding layer is started.

## Claims

### Claim 1

A coil component comprising:
a bar-like core not including a flange part; and
a winding part formed of a conducting wire that is wound in a plurality of layers around a longitudinal outer periphery of the core according to a solenoidal winding method while being turned back sequentially from a lower layer to an upper layer,
the coil component further comprising a winding collapse preventing shift corresponding to a plurality of turns between an end part of a lower winding layer and an end part of an upper winding layer, the winding collapse preventing shift being set to each end part in a winding width direction of each winding layer of the winding part, wherein
in a case of transition from the lower winding layer to the upper winding layer, the conducting wire is turned back from the end part of the lower winding layer, and is obliquely wound in a small number of turns across the winding collapse preventing shift corresponding to the plurality of turns, and dense winding of the upper winding layer is started.

### Claim 2 (depends on 1)

The coil component according to claim 1, wherein
the conducting wire is dividedly wound in the winding part, and
the conducting wire is wound in each divided winding part in a state where the winding collapse preventing shift corresponding to the plurality of turns between the end part of the lower winding layer and the end part of the upper winding layer is set to each end part in the winding width direction of each winding layer of each divided winding part.

### Claim 3 (depends on 2)

The coil component according to claim 2, wherein
the conducting wire is wound in the winding part so as to be divided into the divided winding parts even in a lowermost winding layer.

### Claim 4 (depends on 2)

The coil component according to claim 2, wherein
in a case of transition from a given divided winding part to a next divided winding part during the divided winding, the conducting wire is obliquely wound across a total shift of the winding collapse preventing shifts of a plurality of layers at an end part of the given divided winding part, and winding of a lowermost winding layer of the next divided winding part is then started,

### Claim 5 (depends on 1)

The coil component according to claim 1, wherein
the plurality of turns to which the winding collapse preventing shift corresponds is four to ten turns.

### Claim 6 (depends on 1)

The coil component according to claim 1, wherein
the turning back of the conducting wire from the end part of the lower winding layer and the oblique winding thereof across the winding collapse preventing shift prevents a disordered winding wire by loosening prevention, in addition to winding collapse prevention.

### Claim 7 (depends on 1)

The coil component according to claim 1, which is an antenna coil component that is buried in a body of an animal to be used for ID registration for individual identification.