# US 12,009,704 B2 · Actuator, coil and adhesive layer

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- Number: US 12,009,704 B2
- Document ID: US12009704B2
- Status: Granted
- Kind: B2
- Application number: 17/707,959
- Filed: 2022-03-30
- Published: 2022-10-06
- Granted: 2024-06-11
- Earliest claimed: 2021-04-02
- Assignees: Nidec Sankyo Corporation
- Applicants: Nidec Sankyo Corporation
- Inventors: Kazuhiko Yanagisawa
- Web page: https://patentgrep.com/patent/US12009704B2

## CPC

- H02K 1/34: Reciprocating, oscillating or vibrating parts of the magnetic circuit
- H02K 33/16: with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
- H01F 7/1615: {Armatures or stationary parts of magnetic circuit having permanent magnet}
- H01F 7/18: Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H02K 33/18: with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
- H02K 2211/03: Machines characterised by circuit boards, e.g. pcb
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

An actuator includes a movable body having a magnet, a support body having a coil, and a power feeding board with which two lead-out wires extended from a winding part of the coil are connected. The coil includes a first air core coil and a second air core coil. The first air core coil has a first winding part, a first inner side lead-out wire, and a first outer side lead-out wire. The second air core coil has a second winding part whose winding direction is the same as the first winding part and which is overlapped with the first winding part, a second inner side lead-out wire which is extended from the second winding part and whose tip end portion is electrically connected with a tip end portion of the first inner side lead-out wire, and a second outer side lead-out wire extended from the second winding part.

## Claims

### Claim 1

An actuator comprising:
a movable body comprising a magnet;
a support body comprising a coil, a coil holder comprising a coil arrangement hole in which the coil is held, and a power feeding board with which two lead-out wires extended from a winding part of the coil are connected on an outer peripheral side with respect to the coil;
a connection body which connects the movable body so as to be movable relative to the support body;
a magnetic drive mechanism comprising the magnet and the coil, and relatively moving the movable body and the support body; and
an adhesive layer which fixes the winding part of the coil to the coil holder;
wherein the magnet faces the coil in a thickness direction of the winding part;
wherein the coil comprises:
a first air core coil comprising:
a first winding part;
a first inner side lead-out wire extended from the first winding part to an inner peripheral side; and
a first outer side lead-out wire extended from the first winding part to an outer side; and
a second air core coil comprising:
a second winding part whose winding direction is same as the first winding part and which is overlapped with the first winding part;
a second inner side lead-out wire which is extended from the second winding part to an inner peripheral side and whose tip end portion is electrically connected with a tip end portion of the first inner side lead-out wire; and
a second outer side lead-out wire extended from the second winding part to an outer side;
wherein the winding part comprises the first winding part and the second winding part;
wherein the first outer side lead-out wire and the second outer side lead-out wire are the two lead-out wires;
wherein the adhesive layer comprises:
a filling part which is filled in a center hole of the first air core coil on an inner side of the first winding part and filled in a center hole of the second air core coil on in an inner side of the second winding part; and
a coil adhesion part which exists between the first air core coil and the second air core coil to adhesively bond the first air core coil to the second air core coil, and
a winding part fixing part which exists between the winding part and the coil holder to fix the coil to the coil holder;
wherein the first inner side lead-out wire and the second inner side lead-out wire are sealed in an inside of the filling part; and
wherein the support body comprises a plate which is overlapped with the winding part in the thickness direction of the winding part, and the plate is supported by the coil holder in a state that the filling part of the adhesive layer and the coil arrangement hole which holds the coil are closed by the plate.

### Claim 2 (depends on 1)

The actuator according to claim 1, wherein the first air core coil and the second air core coil are a same air core coil.

### Claim 3 (depends on 1)

The actuator according to claim 1, wherein
the support body comprises a second plate which is supported by the coil holder so as to be overlapped with the winding part in the thickness direction of the winding part from an opposite side to the plate,
the adhesive layer comprises a first plate fixing part which fixes the plate to the coil holder and a second plate fixing part which fixes the second plate to the coil holder, and
the plate and the second plate are supported by the coil holder in a state that the filling part of the adhesive layer and the coil arrangement hole are closed from both sides in the thickness direction of the winding part.