EP-4742511-A1 - MOTOR AND CLEANER HAVING SAME

EP4742511A1EP 4742511 A1EP4742511 A1EP 4742511A1EP-4742511-A1

Abstract

A motor comprising a stator, a bearing and a rotor, which electromagnetically interacts with the stator so as to rotate with respect to a rotary shaft. In addition, the motor includes an impeller, which is coupled to one end of the rotor and rotates so as to generate air flow, and includes a motor body for accommodating the stator, the rotor and the impeller. The motor body includes: a cover part for covering the impeller when the rotor and the impeller are accommodated therein; and a support part for rotatably supporting the rotor. The support part includes: a bearing support part to which the bearing is coupled; and an opening enabling an access to the bearing support part from the outside of the support part. When the impeller is covered by the cover part, the bearing can be disposed to be couplable to the bearing support part, and the opening can be opened toward the outside of the support part in the direction intersecting the direction in which the rotary shaft extends, such that a user approaches the bearing support part through the opening and couples the bearing thereto.

Inventors

LEE, GEONHO
KANG, Wonsoo
KANG, Younmo
KIM, JIMIN
PARK, Taesang
CHO, KEEYEON
CHO, Minshin
HAN, JINWOO
HWANG, WOONG

Assignees

Samsung Electronics Co., Ltd.

Dates

Publication Date: 20260513
Application Date: 20240624

Claims (15)

A motor comprising: a stator; a rotor including a bearing and configured to electromagnetically interact with the stator and rotate about a rotation axis; an impeller coupled to one end of the rotor and configured to generate air flow by rotation; and a motor body configured to accommodate the stator, the rotor, and the impeller; wherein the motor body includes: when the rotor and the impeller are accommodated in the motor body, a cover portion configured to cover the impeller; and a support portion configured to rotatably support the rotor, wherein the support portion includes: a bearing support portion to which the bearing is coupled; and an opening formed to allow access to the bearing support portion from outside of the support portion.
The motor of claim 1, wherein while the cover portion covers the impeller, the bearing is arranged to be coupleable with the bearing support portion, and wherein the opening is open toward the outside of the support portion along a direction crossing a direction along which the rotation axis extends such that a user accesses the bearing support portion through the opening and couples the bearing to the bearing support portion, and the bearing support portion is spaced apart from the cover portion toward the opening.
The motor of claim 1, wherein the stator is configured to be accommodated in the support portion, and the bearing support portion is configured to be positioned between the stator and the cover portion while the stator is accommodated in the support portion.
The motor of claim 1, further comprising a motor cover coupled to the motor body to cover the motor body, wherein the motor cover includes a guide surface configured to guide air to the impeller when the impeller rotates.
The motor of claim 4, wherein the guide surface includes: a first guide surface spaced apart from the support portion and configured to cover the support portion; and a second guide surface bent from the first guide surface toward the impeller and extending.
The motor of claim 5, wherein the second guide surface is formed to extend from the first guide surface such that an inner surface of the motor cover narrows from the support portion toward the cover portion.
The motor of claim 4, wherein the cover portion includes a first coupling portion formed along an outer circumferential surface of the cover portion, the motor cover includes a second coupling portion formed along an inner circumferential surface of the motor cover, and the first coupling portion and the second coupling portion are coupled to each other to couple the motor cover to the motor body.
The motor of claim 5, wherein the support portion includes: a support bar extending from the cover portion along a direction parallel to a direction along which the rotation axis extends; and a support rib formed to protrude from the support bar along a direction crossing the direction along which the rotation axis extends and configured to support the motor cover.
The motor of claim 8, wherein the motor cover includes a support groove formed on an inner surface of the motor cover, and the support rib is inserted into the support groove to support the motor cover on the support portion.
The motor of claim 9, wherein the support groove is formed to extend on the first guide surface along a direction parallel to a direction along which the rotation axis extends.
The motor of claim 10, wherein the motor cover further includes through-holes formed in the second guide surface such that, while the motor cover is coupled to the motor body, the support bar and the support rib pass through the through-holes.
The motor of claim 2, wherein the support portion further includes a plurality of support bars that are spaced apart from the cover portion along an outer circumferential surface of the cover portion along a direction parallel to a direction along which the rotation axis extends, and the opening is formed between the plurality of support bars spaced apart from each other.
The motor of claim 1, wherein the rotor further includes an additional bearing configured to rotatably support the rotor, wherein the motor body further includes: a stator insertion hole formed in the support portion such that the stator is inserted therein; and a cover member coupled to the support portion to cover the stator insertion hole, and wherein the additional bearing is configured to be coupled to the cover member to rotatably support the rotor.
The motor of claim 13, wherein the support portion further includes an insertion hole forming rib arranged along an outer circumference of the stator insertion hole to form the stator insertion hole, and the stator is configured to be supported by the insertion hole forming rib while inserted into the stator insertion hole.
The motor of claim 1, wherein the cover portion further includes a protruding rib protruding inward along an inner circumferential surface of the cover portion, and while the impeller is covered by the cover portion, the impeller is arranged to contact the protruding rib.

Description

[Technical Field] The present disclosure relates to a motor including a motor body and a motor cover having an improved structure, and a cleaner including the same. [Background Art] Generally, a motor is a machine that obtains rotational force from electrical energy and includes a stator and a rotor. The rotor is configured to electromagnetically interact with the stator and rotates by a force acting between a magnetic field and a current flowing through a coil. The motor may include a stator, a rotor configured to rotate, a motor body that accommodates the stator and the rotor, and a bearing that supports the rotor to enable stable rotation of the rotor. Additionally, a motor for a cleaner may include an impeller that rotates in combination with the rotor to generate airflow. A motor cover that covers the motor body may be coupled to the motor body. The motor cover may be coupled to the motor body and protect the motor body from friction caused by components around the motor. The motor may be disposed within a body of a cleaner to generate power, and may be used in various types of cleaners. [Disclosure] [Technical Problem] One aspect of the present disclosure provides a motor of reduced weight and a cleaner including the same. One aspect of the present disclosure provides a motor with a reduced weight by improving the structure of a motor body, and a cleaner including the same. One aspect of the present disclosure provides a motor with increased efficiency and a cleaner including the same. One aspect of the present disclosure provides a motor capable of precisely adjusting the clearance between an impeller and a motor body, and a cleaner including the same. The technical objectives of the present invention are not limited to the above, and other objectives that are not described above will be clearly understood by those skilled in the art from the above detailed description. [Technical Solution] A motor according to an aspect of the present disclosure includes a stator. The motor includes a bearing. The motor includes a rotor configured to electromagnetically interact with the stator and rotate about a rotation axis. The motor includes an impeller coupled to one end of the rotor and configured to generate air flow by rotation. The motor includes a motor body configured to accommodate the stator, the rotor, and the impeller. The motor body includes: a cover portion configured to cover the impeller; and a support portion configured to rotatably support the rotor, while the rotor and the impeller are accommodated in the motor body. The support portion includes: a bearing support portion to which the bearing is coupled. The support portion includes an opening formed to allow access to the bearing support portion from outside of the support portion. A cleaner according to an aspect of the present disclosure includes a suction head, a main body communicating with the suction head, and a motor provided inside the main body to form a suction airflow from the suction head to the inside of the main body. The motor includes a stator. The motor includes a rotor configured to electromagnetically interact with the stator and rotate about a rotation axis, and including a bearing. The motor includes an impeller coupled to one end of the rotor and configured to generate air flow by rotation. The motor includes a motor body configured to accommodate the stator, the rotor, and the impeller. The motor body includes: a cover portion configured to cover the impeller; and a support portion configured to rotatably support the rotor, while the rotor and the impeller are accommodated in the motor body. The support portion includes a bearing support portion to which the bearing is coupled. The support portion includes an opening formed to allow access to the bearing support portion from outside of the support portion. A motor according to an aspect of the present disclosure includes a stator. The motor includes a rotor assembly configured to electromagnetically interact with the stator and rotate about a rotation axis. The motor includes a motor body configured to accommodate the stator and the rotor assembly. The rotor assembly includes a rotor including a bearing and configured to rotate about a rotation axis R, and an impeller coupled to one end of the rotor and configured to generate air flow by rotation. The motor body includes: a cover portion configured to cover the impeller; and a support portion configured to rotatably support the rotor, while the rotor assembly is accommodated in the motor body. The support portion includes: a bearing support portion to which the bearing is coupled; and an opening formed to allow access to the bearing support portion from outside of the support portion. [Description of Drawings] FIG. 1 is a view illustrating a cleaner according to an embodiment.FIG. 2 is a view illustrating a motor according to an embodiment.FIG. 3 is a cross-sectional view of a motor according to an embodiment.FIG. 4 is