US 12,119,710 B2Granted

Motor having stator comprising fastening portion for suppressing tilt of the motor

AssigneeMitsuba Corporation

InventorsRyo Ohori, Takeshi Kanai

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Abstract

The motor comprises: a stator around which coils are wound and which forms a rotating magnetic field rotating a rotor; and a first motor case housing the stator. The stator has: a core body portion forming an annular magnetic path; and a fastening portion projecting outside in the radial direction from the outer circumferential surface of the core body portion. The fastening portion has an attachment hole which is formed in a penetrating manner along the rotating axis line direction of the rotor and into which a fastening screw for fixing the stator to the first motor case is inserted. The first motor case has: first to third core receiving portions receiving an end portion of the core body portion in the rotating axis line direction; and first and second fastener receiving portions receiving an end portion of the fastening portion in the rotating axis line direction.

Claims7

Dependent claims

A motor, comprising:

a stator around which coils are wound and which forms a rotating magnetic field for rotating a rotor;
and
a frame which houses the stator,
wherein the stator comprises:
a core body portion which forms an annular magnetic path;
and
a fixing portion which projects toward a radial outer side from an outer circumferential surface of the core body portion,
wherein the fixing portion has a fixing hole which is formed to penetrate along a rotating axis line direction of the rotor and through which a fixing member for fixing the stator to the frame is inserted,
wherein the frame comprises:
a core receiving portion which receives an end portion of the core body portion in the rotating axis line direction;
a fixing receiving portion which receives an end portion of the fixing portion in the rotating axis line direction;
and
a mounting seat portion on which the fixing portion is placed,
wherein the fixing receiving portion is provided on the mounting seat portion, and
the core receiving portion and the fixing receiving portion are projected toward a core body portion side with respect to the mounting seat portion.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/790,497Filed 1 Sep 2021
Priority: JP 2020-17406415 Oct 2020
Published: US 2023/0059962 A123 Feb 2023
Granted: 15 Oct 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H02K 1/185
Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures: to outer stators
H02K 5/04
Casings; Enclosures; Supports: casings or enclosures characterised by the shape, form or construction thereof
H02K 1/146
Stator cores with salient poles: consisting of a generally annular yoke with salient poles
H02K 7/116
Structural association with clutches, brakes, gears, pulleys or mechanical starters: with gears

Family

US 2023/0059962 A1Pre-grant publication · published 23 Feb 2023
US 12,119,710 B2This patent

From the US filing history. Foreign family members aren’t listed.

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