# US 2024/0204601 A1 · Motor and fan device

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- Number: US 2024/0204601 A1
- Document ID: US20240204601A1
- Status: Published application
- Kind: A1
- Application number: 18/498,007
- Filed: 2023-10-30
- Published: 2024-06-20
- Earliest claimed: 2022-12-20
- Assignees: Mitsuba Corporation
- Applicants: MITSUBA Corporation
- Inventors: SATOSHI NAGAMOTO; KEIICHI HOSOI; MINORU OTA; HIROSHI UEHARA; TOMOHIKO MITA
- Web page: https://patentgrep.com/patent/US20240204601A1

## CPC

- H02K 3/50: Fastening of winding heads, equalising connectors, or connections thereto
- H02K 3/52: Fastening salient pole windings or connections thereto
- H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)}
- H02K 11/0094: {Structural association with other electrical or electronic devices}
- H02K 3/522: {for generally annular cores with salient poles}
- H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06)
- H02K 2203/03: Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

The motor includes a circuit board that controls the generation of a magnetic field for rotating a rotor by supplying currents to coils, and a slit terminal (60U) that electrically connects a winding wire to the circuit board. The slit terminal (60U) includes a pair of legs (63A, 63B) arranged to face each other across the winding wire (244U) at an interval that is narrower than a diameter of a core wire. A motor bracket includes a terminal holder (43U) that has peeled piece accommodation spaces (52A, 52B) for accommodating the peeled pieces (245U) peeled off from the winding wire (244U) press-fitted between the pair of legs (63A, 63B).

## Claims

### Claim 1

A motor, comprising:
a motor bracket;
a shaft supported by the motor bracket;
a rotor rotatably supported by the shaft;
a stator fixed to the motor bracket and comprising a plurality of teeth arranged at positions spaced apart in a circumferential direction and a plurality of coils formed by winding a winding wire around each of the plurality of teeth, wherein the winding wire has a conductive core wire covered with an insulating coating;
a circuit board fixed to the motor bracket and controlling generation of a magnetic field for rotating the rotor by supplying currents to the coils; and
a slit terminal electrically connecting the winding wire to the circuit board,
wherein the slit terminal comprises a pair of legs arranged to face each other across the winding wire at an interval that is narrower than a diameter of the core wire, and
the motor bracket comprises a terminal holder having peeled piece accommodation spaces for accommodating peeled pieces peeled off from the winding wire press-fitted between the pair of legs.

### Claim 2 (depends on 1)

The motor according to claim 1, wherein each of the peeled piece accommodation spaces is defined by a pair of peeled piece accommodation walls arranged to face each other across the leg in an extending direction of the winding wire.

### Claim 3 (depends on 2)

The motor according to claim 2, wherein the terminal holder comprises a peeling protrusion that is arranged between the pair of peeled piece accommodation walls and comes into contact with the winding wire press-fitted between the pair of legs to peel off the peeled pieces from the winding wire, and
the peeled piece accommodation spaces are formed on both sides of the peeling protrusion.

### Claim 4 (depends on 3)

The motor according to claim 3, wherein the terminal holder has leg accommodation spaces that respectively accommodate the legs and communicate with the peeled piece accommodation spaces on sides opposite to the peeling protrusion across the peeled piece accommodation spaces,
each of the leg accommodation spaces is defined by a pair of leg accommodation walls arranged to face each other across the leg in the extending direction of the winding wire,
a part of the leg accommodated in the leg accommodation space enters the peeled piece accommodation space, and
a thickness dimension of the leg is larger than an interval between the pair of peeled piece accommodation walls and smaller than an interval between the pair of leg accommodation walls in the extending direction of the winding wire.

### Claim 5 (depends on 3)

The motor according to claim 3, wherein the slit terminal comprises (N+1) legs arranged to face each other respectively across N winding wires that are arranged in parallel, and
the terminal holder comprises a pair of restricting walls that respectively abut against the legs at both ends to restrict elastic deformation of the legs at both ends in a direction of separating from each other.

### Claim 6 (depends on 1)

The motor according to claim 1, wherein the peeled piece accommodation spaces are formed at a plurality of positions spaced apart in an extending direction of the winding wire.

### Claim 7 (depends on 1)

The motor according to claim 1, wherein an interval between the pair of legs gradually narrows toward a press-fitting direction of the winding wire.

### Claim 8 (depends on 1)

A fan device, comprising:
the motor according to claim 1; and
a fan rotationally driven by the motor to generate cooling air.