# US 11,905,960 B2 · Fan motor

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- Number: US 11,905,960 B2
- Document ID: US11905960B2
- Status: Granted
- Kind: B2
- Application number: 17/061,651
- Filed: 2020-10-02
- Published: 2021-01-21
- Granted: 2024-02-20
- Earliest claimed: 2016-05-24
- Assignees: Nidec Corporation
- Applicants: Nidec Corporation
- Inventors: Guiling Zhang; Hidenobu Takeshita
- Web page: https://patentgrep.com/patent/US11905960B2

## CPC

- F04D 25/0613: {the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator}
- F04D 25/0693: {Details or arrangements of the wiring}
- F04D 19/002: {Axial flow fans}
- F04D 25/08: the working fluid being air, e.g. for ventilation
- F04D 29/325: {for axial flow fans (blade mountings F04D29/34, blades F04D29/38)}
- F04D 29/522: {especially adapted for elastic fluid pumps}
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)

## Abstract

A fan motor includes a motor including a stationary portion and a rotating portion arranged to rotate about a rotation axis extending in a vertical direction; an impeller including a plurality of blades, and arranged to rotate together with the rotating portion; a housing arranged to house the motor and the impeller therein; and a plurality of lead wires each of which is connected to the motor and is arranged to extend radially outward. The housing includes a tubular portion being tubular, and arranged to extend from an inlet side to an outlet side along the rotation axis, and house at least a portion of the impeller therein; a flange portion arranged to project radially outward from at least a portion of the tubular portion; a lead wire outlet defined in at least a portion of the tubular portion, and arranged to pass through the tubular portion in a radial direction; and a vertical groove arranged to be in communication with the lead wire outlet, and arranged to pass through the flange portion in an axial direction. The flange portion includes a first restricting portion arranged to extend toward the tubular portion. At least one of the lead wires is drawn radially outward through the lead wire outlet, and is held in the vertical groove radially inside of the first restricting portion.

## Claims

### Claim 1

A fan motor comprising:
a motor including a stationary portion and a rotating portion arranged to rotate about a rotation axis extending in a vertical direction;
an impeller, including a plurality of blades, is arranged to rotate together with the rotating portion;
a housing arranged to house the motor and the impeller therein;
lead wires, each of which is connected to the motor and is arranged to extend radially outward; and
a clip; wherein
the housing includes:
a tubular portion being tubular, and arranged to extend from an inlet side to an outlet side along the rotation axis, and house at least a portion of the impeller therein;
a flange portion arranged to project radially outward from at least a portion of the tubular portion;
a lead wire outlet defined in at least a portion of the tubular portion, and arranged to pass through the tubular portion in a radial direction; and
a vertical groove arranged to be in communication with the lead wire outlet, and arranged to pass through the flange portion in an axial direction;
the flange portion includes a first restricting portion arranged to extend toward the tubular portion;
at least one radially extending lead wire of the lead wires is drawn radially outward through the lead wire outlet, and is held in the vertical groove radially inside of the first restricting portion; and
the clip is attached to the housing such that the clip covers some of a radially extending opening portion of the lead wire outlet which is axially above or axially below the lead wires; and
the clip closes a radially outermost portion of some of the radially extending opening portion of the lead wire outlet.

### Claim 2 (depends on 1)

The fan motor according to claim 1, wherein at least one downwardly extending lead wire of the lead wires is arranged to extend downward from the vertical groove.

### Claim 3 (depends on 1)

The fan motor according to claim 1, wherein the clip includes:
a body portion arranged to cover an axially extending portion of the lead wire outlet on a lower axial side of the lead wires; and
a projecting portion arranged to project upward from the body portion.

### Claim 4 (depends on 1)

The fan motor according to claim 1, wherein at least a portion of the clip overlaps an axially uppermost or axially lowermost end of the vertical groove when the fan motor is viewed in the vertical direction.

### Claim 5 (depends on 4)

The fan motor according to claim 4, wherein the at least the portion of the clip which overlaps the axially uppermost or axially lowermost end of the vertical groove when the fan motor is viewed in the vertical direction is directly adjacent to the axially uppermost or axially lowermost end of the vertical groove in the vertical direction.