Motor and cleaner having same

Abstract

This motor comprises 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.

Description

Motor and vacuum cleaner including same

[0001] The present disclosure relates to a motor including a motor body and a motor cover having an improved structure, and a vacuum cleaner including the same.

[0002] Typically, a motor is a machine that obtains rotational power from electrical energy, and includes a stator and a rotor. The rotor is designed to interact electromagnetically with the stator and rotates due to the force acting between a magnetic field and the current flowing in the coil.

[0003] A motor may include a stator, a rotor configured to rotate, a motor body housing the stator and the rotor, and a bearing supporting the rotor to ensure stable rotation of the rotor. Furthermore, a vacuum cleaner motor may include an impeller that rotates in conjunction with the rotor, thereby generating airflow.

[0004] 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 to protect the motor body from friction caused by components around the motor.

[0005] The motor can be placed inside the body of the vacuum cleaner to generate power and can be used in various types of vacuum cleaners.

[0006] One aspect of the present disclosure provides a lightweight motor and a vacuum cleaner including the same.

[0007] One aspect of the present disclosure is to provide a lightweight motor and a vacuum cleaner including the same by improving the structure of the motor body.

[0008] One aspect of the present disclosure provides a motor with increased efficiency and a vacuum cleaner including the same.

[0009] One aspect of the present disclosure provides a motor capable of precisely adjusting the clearance between an impeller and a motor body, and a vacuum cleaner including the same.

[0010] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0011] A motor according to the invention includes a stator. The motor includes a bearing. The motor includes a rotor that is arranged to rotate about a rotational axis by electromagnetic interaction with the stator. The motor includes an impeller that is coupled to one end of the rotor and rotates to generate a flow of air. The motor includes a motor body that accommodates the stator, the rotor, and the impeller. The motor body includes a cover portion that is arranged to cover the impeller when the rotor and the impeller are accommodated, and a support portion that rotatably supports the rotor. 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 an outside of the support portion.

[0012] A vacuum cleaner according to the invention comprises 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 into the interior of the main body. The motor includes a stator. The motor is arranged to electromagnetically interact with the stator to rotate about a rotational axis, and includes a rotor including a bearing. The motor includes an impeller coupled to one end of the rotor to rotate to generate a flow of air. The motor includes a motor body that accommodates the stator, the rotor, and the impeller. The motor body includes a cover portion provided to cover the impeller when the rotor and the impeller are accommodated, and a support portion that rotatably supports the rotor. 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 an outside of the support portion.

[0013] A motor according to the invention includes a stator. The motor includes a rotor assembly configured to rotate by electromagnetic interaction with the stator. The motor includes a motor body that accommodates the stator and the rotor assembly. The rotor assembly includes a rotor that rotates about a rotational axis, including a bearing, and an impeller coupled to one end of the rotor and rotating to generate a flow of air. The motor body includes a cover portion configured to cover the impeller when the rotor assembly is accommodated, and a support portion that rotatably supports the rotor. 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 an outside of the support portion.

[0014] FIG. 1 is a drawing illustrating a vacuum cleaner according to one embodiment.

[0015] FIG. 2 is a drawing illustrating a motor according to one embodiment.

[0016] Figure 3 is a cross-sectional view of a motor according to one embodiment.

[0017] Figure 4 is an enlarged view of area A of Figure 3.

[0018] Figure 5 is a diagram illustrating an exploded view of a motor according to one embodiment.

[0019] Fig. 6 is a drawing illustrating a motor body according to one embodiment.

[0020] Fig. 7 is a drawing showing the motor body of Fig. 6 from a different angle.

[0021] FIG. 8 is a drawing illustrating a motor cover according to one embodiment.

[0022] Figure 9 is a drawing showing the motor cover of Figure 8 from a different angle.

[0023] FIG. 10 is a drawing showing a motor cover coupled to a motor body according to one embodiment.

[0024] Fig. 11 is a drawing showing the motor cover combined with the motor body of Fig. 10 from a different angle.

[0025] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0026] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0027] In addition, the terminology used in this specification is used to describe embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0028] Additionally, terms including ordinal numbers such as “first,” “second,” etc. used herein may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0029] Meanwhile, the shape and position of each component are not limited by the terms such as “front,” “back,” “left,” “right,” “upper,” and “lower” used in the description below.

[0030] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0031] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0032] When referring to the direction of rotation, clockwise may be referred to as the first direction, and counterclockwise, the direction opposite to the first direction, may be referred to as the second direction. While these expressions may be commonly used to describe specific details for implementing the invention, the rotational direction of the components of the present invention is not limited by these terms.

[0033] Hereinafter, a motor and a vacuum cleaner including the same according to various embodiments will be specifically described with reference to the attached drawings.

[0034] FIG. 1 is a drawing illustrating a vacuum cleaner according to one embodiment.

[0035] Referring to FIG. 1, a vacuum cleaner (1) according to one of various embodiments of the present invention may include a motor (100). At this time, the type of the vacuum cleaner (1) is not limited. For example, the motor (100) may be used in a stick-type vacuum cleaner (1) or an upright-type vacuum cleaner (1). In addition, the motor (100) may be applied to various home appliances in addition to the vacuum cleaner (1). Hereinafter, a description will be given focusing on a stick-type vacuum cleaner (1) including a motor (100).

[0036] A vacuum cleaner (1) may include a main body (12) and a suction head (16). The vacuum cleaner (1) may include an extension pipe (15) connecting the main body (12) and the suction head (16) and a handle connected to the main body (12). The main body (12) and the suction head (16) may be connected to each other through the extension pipe (15).

[0037] A suction head (16) may be provided at the lower portion of the main body (12) and positioned so as to be in contact with the surface to be cleaned. The suction head (16) may be provided so as to be in contact with the surface to be cleaned and to draw dust or dirt from the surface to be cleaned into the interior of the main body (12) using suction force generated from the motor (100).

[0038] The suction head (16) includes a suction brush and can be attached to the surface to be cleaned to suck up air and foreign substances from the surface to be cleaned. The suction head (16) can be rotatably connected to the extension tube (15).

[0039] The extension pipe (15) can be formed of a pipe or flexible hose having a certain rigidity.

[0040] The vacuum cleaner (1) may include a motor (100). The motor (100) may generate power to generate suction force inside the main body (12). The motor (100) may be configured to form a suction air flow from the suction head (16) to the inside of the main body (12).

[0041] The extension tube (15) can transmit the suction force generated by the motor (100) inside the main body (12) to the suction head (16) and guide the air and foreign substances such as dust sucked through the suction head (16) to the main body (12).

[0042] The vacuum cleaner (1) may include a dust collector (11). The dust collector (11) may be provided to collect dust or dirt on the surface to be cleaned that is sucked in from the suction head (16) and moved into the interior of the main body (12).

[0043] The handle is a part that is connected to the main body (12) and can be provided so that a user can hold and operate the vacuum cleaner (1). The handle can be provided with an operating part (13) so that a user can operate the vacuum cleaner (1).

[0044] The main body (12) may include a control unit (13). The user can turn the vacuum cleaner (1) on / off or control the suction strength by operating the power button, etc. provided on the control unit (13).

[0045] The main body (12) may include a battery (14) provided to supply power necessary for driving the components of the vacuum cleaner (1).

[0046] FIG. 2 is a diagram illustrating a motor according to one embodiment. FIG. 3 is a cross-sectional view of a motor according to one embodiment. FIG. 4 is an enlarged view of area A of FIG. 3. FIG. 5 is an exploded view of a motor according to one embodiment.

[0047] Referring to FIGS. 2 to 5, the motor (100) may include a stator (130), a rotor (151), and an impeller (152). The motor (100) may include a motor body (300) configured to accommodate the stator (130), the rotor (151), and the impeller (152).

[0048] The stator (130) may include a stator core (134), a stator coil (132), an insulator (133), and a rotor receiving portion (131). The stator (130) may be configured to generate magnetic flux when current is applied to the stator coil (132).

[0049] A rotor receiving portion (131) for receiving a rotor (151) may be provided at the center of the stator core (134). The rotor (151) may be placed in the rotor receiving portion (131). The rotor (151) may interact electromagnetically with the stator (130).

[0050] The stator coil (132) can be wound on the stator core (134) while the insulator (133) is coupled to the stator core (134).

[0051] The insulator (133) may be made of a material having electrical insulation properties. The insulator (133) surrounds the stator core (134) to insulate the stator core (134) and the stator coil (132).

[0052] The stator (130) may further include an insertion portion (135) provided at the bottom of the insulator (133). The insertion portion (135) may be provided to be inserted into the control unit.

[0053] The rotor (151) may include a rotor body (1511). The rotor body (1511) may include a cylindrical shape extending in the direction of the rotational axis (R) about which the rotor (151) rotates, but is not limited thereto.

[0054] The rotor (151) may include a rotor core (1512) that is arranged to rotate inside the stator (130). The rotor core (1512) may be made of a permanent magnet having magnetic properties, or may include a coil having electromagnetic properties. Accordingly, the rotor (151) may be arranged to be rotatable about a rotation axis (R) by electromagnetically interacting with the stator (130). The rotor core (1512) may be located at the middle side of the rotor body (1511). In one embodiment of the present invention, it is assumed that the rotor core (1512) is made of a permanent magnet.

[0055] The rotor (151) may include a bearing (1513). The bearing (1513) may be arranged on the rotor body (1511) to rotatably support the rotor (151). More specifically, the bearing (1513) may be arranged on a first side (1511a) adjacent to one end of the rotor body (1511). As will be described later, an impeller (152) may be coupled to one end of the rotor body (1511). The bearing (1513) may be positioned between the rotor core (1512) and the impeller (152). The direction from the bearing (1513) toward the impeller (152) may be defined as the downward direction. That is, the impeller (152) may be positioned lower than the bearing (1513) with respect to the rotor body (1511).

[0056] The rotor (151) may include an additional bearing (1514). The additional bearing (1514) may be arranged on the rotor body (1511) to rotatably support the rotor (151). More specifically, the additional bearing (1514) may be arranged on a second side (1511b) adjacent to the other end of the rotor body (1511). That is, the additional bearing (1514) may be arranged on the rotor body (1511) so as to be located on the opposite side of the bearing (1513) with respect to the rotor core (1512). The additional bearing (1514) may be located on an upper side of the rotor body (1511) than the bearing (1513).

[0057] The impeller (152) may include a rotor coupling portion (1523) to which the rotor (151) is coupled. When the rotor (151) is coupled to the rotor coupling portion (1523), the impeller (152) may rotate together with the rotor (151). The impeller (152) may be coupled to one end of the rotor (151). The impeller (152) may generate air flow by rotating while coupled to the rotor (151).

[0058] The impeller (152) may include a hub (1522) and a plurality of blades (1521) protruding from the hub (1522) to form a flow of air.

[0059] The hub (1522) may be provided so that its cross-sectional area decreases along the axial direction of the rotor (151). The hub (1522) may be provided so that air introduced in the axial direction is discharged in the radial direction of the rotor (151). Specifically, the hub (1522) may be provided so that its cross-sectional area decreases upward when the rotor (151) is arranged to extend in the vertical direction. In other words, the hub (1522) may be formed to extend from the outer surface of the rotor coupling portion (1523) so that the rotor coupling portion (1523) is arranged at the center. At this time, the direction in which the hub (1522) extends from the outer surface of the rotor coupling portion (1523) may be defined as the outer direction.

[0060] The impeller (152) may include a plurality of blades (1521) protruding from one surface of the hub (1522). The plurality of blades (1521) may be arranged to form an airflow by rotating together with the hub (1522). The plurality of blades (1521) may be arranged on the outer surface of the hub (1522). The plurality of blades (1521) and the hub (1522) may be provided as one piece.

[0061] The impeller (152) has a plurality of blades (1521) so that air flowing in from the upper side of the hub (1522) can be discharged radially outwardly from the rotor (151).

[0062] The motor (100) may include a diffuser (160). The diffuser (160) may include a diffuser body (165) that forms the outer shape of the diffuser (160). The diffuser (160) may include a diffuser upper surface (163). The diffuser (160) may include a diffuser flow path (164). The diffuser flow path (164) may be formed along the outer periphery of the diffuser upper surface (163).

[0063] The diffuser (160) may include diffuser vanes (161). The diffuser vanes (161) may be provided in multiples. The diffuser vanes (161) may be arranged to be inserted into the diffuser passage (164).

[0064] The diffuser (160) may be placed on the lower side of the impeller (152). Accordingly, the air discharged radially outwardly of the rotor (151) by the impeller (152) may flow into the diffuser passage (164), have its flow direction changed by the diffuser vane (161), and finally be discharged to the lower side of the diffuser (160). The diffuser (160) may include a cover portion coupling portion (162) (described later). A detailed description of the cover portion coupling portion (162) will be described later.

[0065] The motor (100) may include a motor body (300) that accommodates a stator (130), a rotor (151), and an impeller (152). The motor (100) may include a cover member (110). The motor (100) may include an upper fixing member (120) that supports the stator (130) to the motor body (300). The motor (100) may include a lower fixing member (140) that supports the stator (130) to the motor body (300). The motor (100) may include a motor cover (200) that is coupled to the motor body (300) to cover the motor body (300).

[0066] When the motor body (300) accommodates the rotor (151) and the impeller (152), it may include a cover portion (310) provided to cover the impeller (152).

[0067] The cover portion (310) may include an impeller cover (314) that is arranged to surround the impeller (152) and covers the impeller (152). The impeller cover (314) may be formed to include a shape that expands downward when the motor body (300) accommodates the rotor (151) and the impeller (152). For example, the impeller cover (314) may include a hollow hemispherical shape with an open lower portion, but the shape of the impeller cover (314) is not limited thereto.

[0068] The cover portion (310) may include a diffuser coupling portion (315). The diffuser coupling portion (315) may be provided to extend downward from the outer periphery of the impeller cover (314). The cover coupling portion (162) of the diffuser (160) may be inserted into the diffuser coupling portion (315). Through this, the diffuser (160) may be coupled to the cover portion (310) and coupled to the motor body (300).

[0069] The cover part (310) may include a motor body hole (311, see FIG. 6). The motor body hole (311) may be provided on the upper side of the impeller cover (314). The motor body hole (311) may be formed on the upper side of the impeller cover (314) to allow air to flow to the diffuser (160).

[0070] A protruding rib (316, 317) may be formed on the inner surface (316) of the cover portion. The protruding rib (316, 317) may be provided to protrude inward along the inner surface (316) of the cover portion.

[0071] The protruding ribs (316, 317) may include a first protruding rib (317) and a second protruding rib (318). The first protruding rib (317) may be formed closer to the motor body hole (311) than the second protruding rib (318).

[0072] The cover part (310) may include a motor cover coupling part (312). The motor cover coupling part (312) may be formed along the outer periphery of the motor body hole (311). The motor cover (200) may be coupled to the motor body (300) through the motor cover coupling part (312). More specifically, the motor cover coupling part (312) may include a first coupling part (313). The first coupling part (313) may be formed to protrude outward from the motor cover coupling part (312). In other words, the first coupling part (313) may be formed to protrude outward along the outer periphery of the motor cover coupling part (312). The first coupling part (313) may be provided to be inserted into the motor cover (200). Through this, the motor cover (200) may be coupled to the motor cover coupling part (312) of the motor body (300). Therefore, the motor cover (200) can be combined with the motor body (300).

[0073] The motor body (300) may include a support (320). The support (320) may rotatably support the rotor (151) when the rotor (151) and the impeller (152) are accommodated therein. The support (320) may accommodate the stator (130). The support (320) may be formed to protrude from the cover (310) and extend upward.

[0074] The support (320) may include a support (329). The support (329) may be formed to extend in a direction parallel to the direction in which the rotation axis (R) of the rotor (151) extends from the cover (310). The support (329) may include a plurality of support stands (329) spaced apart from the cover (310) along the outer surface of the cover (310) in a direction parallel to the direction in which the rotation axis (R) of the rotor (151) extends. The spacing between the plurality of support stands (329) may be provided at the same interval. Although the drawing shows three support stands (329), it is to be understood that the number of support stands (329) may vary.

[0075] A plurality of supports (329) can be arranged along the outer periphery of the motor body hole (311). Accordingly, a motor body hole (311) can be located between the plurality of supports (329).

[0076] The support member (320) may include a support rib (328). The support rib (328) may be formed to protrude from the support member (329). The support rib (328) may be formed to protrude in a direction intersecting with the direction in which the rotation axis (R) extends from the support member (329). In other words, the support rib (328) may be formed to protrude outward from the support member (329).

[0077] The support rib (328) may be formed to extend along the direction in which the support member (329) extends and to be connected to the cover member (310). That is, the support rib (328) may be formed to protrude from the cover member (310) and to extend along the direction in which the support member (329) extends. Since the support rib (328) protrudes outward from the support member (329), the support rib (328) may protrude from the outer surface of the cover member (310) more than the support member (329).

[0078] The support (320) may include a bearing support (325). The bearing support (325) may be provided so that a bearing (1513) of the rotor (151) is coupled thereto. The bearing support (325) may be arranged to be surrounded by a plurality of supports (329). The bearing support (325) may be arranged to be spaced apart from the cover (310). The bearing support (325) may be arranged on the upper side of the cover (310) to be spaced apart from the cover (310). The bearing support (325) may be positioned between the stator (130) and the cover (310) when the stator (130) is accommodated in the support (320). Therefore, the bearing support (325) may be provided to be accessible from the outside of the motor body (300) regardless of the cover (310).

[0079] The bearing support (325) may be supported by the support (329) and may be disposed spaced apart from the cover (310). More specifically, the support (320) may include a bearing support connecting member (3291) formed to protrude inwardly from the support (329). The bearing support connecting member (3291) may be provided to protrude inwardly from the middle side of the support (329) so as to be spaced apart from the cover (310). The bearing support (325) may be connected to the bearing support connecting member (3291). Therefore, the bearing support (325) may be disposed spaced apart from the cover (310).

[0080] When the bearing (1513) is coupled to the bearing support (325), the rotor (151) and the impeller (152) can be rotatably coupled to the motor cover (200). The bearing support (325) can include a bearing support through-hole (326). When the bearing (1513) is coupled to the bearing support (325), the rotor (151) can be arranged to pass through the bearing support through-hole (326). In addition, the rotor (151) can be arranged to continue to extend downward and pass through the motor body hole (311) of the cover (310).

[0081] The support member (320) may include an insertion hole forming rib (321). The insertion hole forming rib (321) may form a stator insertion hole (322) through which the stator (130) may be inserted into the support member (320). That is, the stator (130) may be inserted into the support member (320).

[0082] The support member (320) may include a stator mounting groove (324) capable of mounting an inserted stator (130). The support member (320) may include a stator support member (323) that stably supports the mounted stator (130) on the support member (320).

[0083] The insertion hole forming rib (321) may be formed to protrude from the upper portion of the support (329). More specifically, the insertion hole forming rib may be formed to protrude in a direction intersecting the direction in which the rotation axis (R) extends from the upper portion of each of the plurality of support stands (329), thereby connecting the plurality of support stands (329). Through this, the insertion hole forming rib (321) may be formed to have a substantially ring shape. A stator insertion hole (322) may be formed at the center of the insertion hole forming rib (321).

[0084] The stator mounting groove (324) may be formed on the lower side of the stator insertion hole (322). A space formed by surrounding a plurality of support members (329) may form a part of the stator mounting groove (324). More specifically, the inner surfaces of the plurality of support members (329) may form the side surfaces of the stator mounting groove (324).

[0085] The inner surface of the support (329) arranged to face the stator mounting groove (324) can form a stator support portion (323). Accordingly, the stator (130) is accommodated in the stator mounting groove (324), and the side surface of the stator (130) can be supported by the stator support portion (323), so that the stator (130) can be accommodated more stably. In addition, when the stator (130) is accommodated in the stator mounting groove (324), the insertion hole forming rib (321) can support the stator (130) by coming into contact with the side surface of the stator (130).

[0086] The stator mounting groove (324) can be formed on the upper side of the bearing support (325). That is, when the stator (130) is mounted in the stator mounting groove (324), the stator (130) can be accommodated to be positioned on the upper side of the bearing support (325).

[0087] The lower fixing member (140) may be coupled to the stator (130) to cover the lower portion of the stator (130). The lower fixing member (140) of the stator (130) may include a lower fixing member body (142) forming an outer shape. The lower fixing member body (142) may include a lower fixing member hole (141) at the center and may have an approximately ring shape. The lower fixing member (140) may include a lower fixing member connecting portion (143). The lower fixing member connecting portion (143) may be formed to extend upward from an outer circumferential surface of the lower fixing member body (142).

[0088] The lower fixing member (140) can be coupled to the stator (130) so that the lower fixing member hole (141) communicates with the bearing (1513) hole, thereby covering the lower portion of the stator (130). More specifically, the lower fixing member (140) can be fixed to the support member (320) by having the lower fixing member body (142) inserted into the bearing (1513) hole. The lower fixing member connecting portion (143) can support the stator (130) by contacting the side surface of the stator. Therefore, the stator (130) can be supported on the support member (320) by the lower fixing member (140).

[0089] The cover member (110) can cover the upper part of the stator (130) receiving groove by being combined with the insertion hole forming rib (321). The cover member (110) can include a cover part (310) body (112) that forms an outer shape. The cover part (310) body (112) includes an additional bearing support member (111) in the center and can have an approximately ring shape. The cover member (110) can include a cover part (310) connecting portion (113) that is formed to extend downward from the outer circumferential surface of the cover part (310) body (112). The cover part (310) connecting portion (113) can be combined with the insertion hole forming rib (321) through a connecting portion (3211) (135) formed in the insertion hole forming rib (321). The cover part (310) material connecting part (113) and the insertion hole forming rib (321) can be connected by a connecting member (114) such as a screw, but the connecting method is not limited thereto. As the cover part (310) material connecting part (113) is connected to the insertion hole forming rib (321), the cover part (110) can be supported by the supporting member (320).

[0090] The upper fixing member (120) may be coupled to the stator (130) to cover the upper portion of the stator (130). The upper fixing member (120) of the stator (130) may include an upper fixing member body (122) forming an outer shape. The upper fixing member body (122) may include an upper fixing member hole (121) at the center and may have a roughly ring shape. The upper fixing member (120) may include an upper fixing member connecting portion (123). The upper fixing member connecting portion (123) may be formed to extend downward from an outer circumferential surface of the upper fixing member body (122).

[0091] The upper fixing member (120) can be coupled to the stator (130) so that the upper fixing member hole (121) communicates with the additional bearing support member (111) and can cover the upper portion of the stator (130). More specifically, the upper fixing member (120) can be fixed to the support member (320) as the upper fixing member body (122) is inserted into the additional bearing support member (111) and fixed to the cover member (110).

[0092] The upper fixed member connecting portion (123) can support the stator (130) by contacting the side surface of the stator. Therefore, the stator (130) can be supported by the support portion (320) by the upper fixed member (120). The additional bearing (1514) can be coupled to the additional bearing support portion (111) by being inserted into the groove of the upper fixed member (120). Therefore, the additional bearing (1514) can be coupled to the cover member (110) to support the rotor (151) so that it can rotate.

[0093] Below, the process of assembling the motor (100) is examined in detail.

[0094] An impeller (152) may be coupled to one end of the rotor body (1511). A bearing (1513) may be arranged on a first side (1511a) adjacent to one end of the rotor body (1511), and an additional bearing (1514) may be arranged on a second side (1511b) adjacent to the other end of the rotor body (1511). A rotor core (1512) may be arranged in the rotor body (1511) so as to be positioned between the bearing (1513) and the additional bearing (1514). The rotor (151) and the impeller (152) coupled to the rotor (151) may be defined as a rotor assembly (150). The rotor assembly (150) may be arranged to rotate by electromagnetically interacting with the stator (130).

[0095] The rotor assembly (150) is arranged such that the second side (1511b) faces upward and the impeller (152) faces downward, and can be inserted into the rotor body (1511) from the lower side and accommodated in the motor body (300). When the motor body (300) accommodates the rotor assembly (150), the cover part (310) can accommodate the impeller (152).

[0096] When the rotor assembly (150) is accommodated in the motor body (300), the lower fixing member (140), the stator (130), the upper fixing member (120), and the cover member (110) may be coupled with the rotor body (1511).

[0097] When the rotor assembly (150) is inserted into the motor body (300), the rotor body (1511) can be inserted into the motor body (300) by sequentially passing through the motor body hole (311), the bearing support through-hole (326), the lower fixing member hole (141), the rotor receiving portion (131), the upper fixing member hole (121), and the additional bearing support portion (111).

[0098] The impeller (152) may be covered by the cover part (310) so as to be in contact with the first protruding rib (317) formed along the inner surface (316) of the cover part. The impeller (152) may be covered by the cover part (310) so as to be in contact with the second protruding rib (318) formed along the inner surface (316) of the cover part. Thereafter, when the impeller (152) rotates, it may come into contact with the first protruding rib (317) and the second protruding rib (318), but the first protruding rib (317) and the second protruding rib (318) may be worn due to the contact with the impeller (152) so as not to come into contact with the impeller (152).

[0099] The distance at which the impeller (152) is separated from the inner surface of the cover (316) can be adjusted by the position and degree of protrusion of the first protruding rib (317) and the second protruding rib (318) on the inner surface of the cover (316).

[0100] After the impeller (152) is covered by the cover (310), the bearing (1513) can be coupled to the bearing support (325). That is, the rotor assembly (150) can be coupled to the motor body (300) after adjusting the distance between the impeller (152) and the inner surface (316) of the cover. Since the bearing support (325) is not covered by the cover (310) and is spaced apart from the cover (310), it can be provided to be accessible from the outside of the motor body (300). Therefore, even after the impeller (152) is accommodated, a user can access the bearing support (325) from the outside of the motor body (300) and couple the bearing support (325) to the bearing (1513). Through this, the distance between the impeller (152) and the inner surface (316) of the cover part can be adjusted as desired by the user, and then the rotor assembly (150) can be combined, thereby adjusting the position of the impeller (152). The user can approach the bearing support (325) from the outside through the opening (327, see FIG. 6) and combine the bearing (1513). A detailed description thereof will be provided later.

[0101] After the bearing (1513) is coupled to the bearing support (325), an additional bearing (1514) can be coupled to the additional bearing support (111). Thereafter, a motor cover (200) can be coupled to the motor body (300) to cover the motor body (300).

[0102] FIG. 6 is a drawing illustrating a motor body according to one embodiment. FIG. 7 is a drawing illustrating the motor body of FIG. 6 from a different angle. FIG. 8 is a drawing illustrating a motor cover according to one embodiment. FIG. 9 is a drawing illustrating the motor cover of FIG. 8 from a different angle. FIG. 10 is a drawing illustrating a motor cover coupled to a motor body according to one embodiment. FIG. 11 is a drawing illustrating a motor cover coupled to the motor body of FIG. 10 from a different angle.

[0103] Referring to FIGS. 6 to 11, the support (320) may include an opening (327). The opening (327) may be formed to allow access to the bearing support (325) from the outside of the support (320). The opening (327) may be formed in the support (320) in a direction intersecting the direction in which the rotation axis (R) extends. The opening (327) may be formed between a plurality of supports (329) that are spaced apart from each other. The user may adjust the distance at which the impeller (152) is covered by the cover (310) and the impeller (152) and the inner surface (316) of the cover are spaced apart from each other, and then approach the bearing support (325) from the outside of the motor body (300) through the opening (327) to couple the bearing (1513). In other words, when the cover part (310) covers the impeller (152), the bearing (1513) can be arranged in a state where it can be connected to the bearing support part (325), and the user can access the bearing support part (325) through the opening (327) to connect the bearing (1513) to the bearing support part (325). The method by which the user connects the bearing (1513) to the bearing support part (325) may include a method of applying an adhesive or the like, but this is merely an example, and various methods by which the user connects the bearing (1513) to the bearing support part (325) may be provided.

[0104] The motor cover (200) may include a motor cover housing (203) that forms an outer shape. The motor cover housing (203) may include a generally cylindrical shape, but is not limited thereto.

[0105] The motor cover (200) may include a housing rim portion (204). The motor cover (200) may include a connecting rib (205) formed to protrude radially from the motor cover housing (203). The housing rim portion (204) may be connected to the motor cover housing (203) by being connected to the connecting rib (205).

[0106] The motor cover (200) may include a side portion (206) of the motor (100) housing. The motor cover (200) may include a housing support portion (207) formed on the side portion of the motor (100) housing and arranged to extend in the vertical direction.

[0107] The motor cover (200) may include an air inlet (201) formed to be open to the upper side of the motor cover housing (203). The motor cover (200) may include a motor cover hole (202) formed to be open to the lower side of the motor cover housing (203) and provided to communicate with the air inlet (201).

[0108] The motor cover (200) may include a first guide surface (211) and a second guide surface (212) formed on the inner surface of the motor cover housing (203). The first guide surface (211) may be provided to cover the support portion (320) while being spaced apart from the support portion (320) when the motor cover (200) is coupled to the motor body (300).

[0109] The second guide surface (212) may be extended downwardly from the first guide surface (211) toward the impeller (152). In other words, the second guide surface (212) may be formed by extending from the first guide surface (211) such that the inner surface of the motor cover (200) narrows from the support portion (320) toward the cover portion (310).

[0110] The motor cover hole (202) can be arranged to communicate with the motor body hole (311) of the motor body (300).

[0111] When the rotor assembly (150) rotates and the impeller (152) causes air to flow from the upper side to the lower side, the air can flow into the motor cover housing (203) through the motor cover hole (202). The air that has flowed into the motor cover housing (203) is guided by the first guide surface (211) and the second guide surface (212) and flows into the motor cover hole (202) so that it can be discharged to the outside of the motor cover (200). The discharged air can be drawn into the motor body hole (311) of the motor body (300), pass through the impeller (152), and be discharged through an air discharge port that is provided to be open on the lower side of the cover portion (310) (see FIG. 2).

[0112] The motor cover (200) may include a support groove (222) formed on the inner surface of the motor cover (200). The support groove (222) may be formed to extend in a direction parallel to the direction in which the rotation axis (R) extends to the first guide surface (211).

[0113] The support groove (222) may include a support groove cutout (221) that is formed by cutting out to open toward the inner surface of the motor cover housing (203). The support groove cutout (221) may be formed to extend in a direction parallel to the direction in which the rotation axis (R) extends along the support groove (222).

[0114] When the motor cover (200) is coupled to the motor body (300), the support rib (328) of the motor body (300) can be inserted into the support groove (222) of the motor cover (200). Accordingly, the motor cover (200) can be supported by the motor body (300) and coupled with the motor body (300).

[0115] The support groove (222) may include a plurality of support grooves (222) formed along the inner surface of the motor cover (200). A plurality of support ribs (328) may be inserted into each of the plurality of support grooves (222).

[0116] The motor cover (200) may include a motor cover extension (225) formed to extend downward. The motor cover extension (225) may be formed to protrude downward from the housing bottom surface (208) where the second guide surface (212) is formed.

[0117] The motor cover (200) may include a through hole (223, 224) formed in the second guide surface (212) so that the support (329) and the support rib (328) may pass through it when coupled to the motor body (300). More specifically, the motor cover extension (225) may include a support rib through hole (223) and a support through hole (224) formed to open downward. The support rib through hole (223) and the support through hole (224) may be in communication with each other.

[0118] The motor cover (200) may include a motor body connecting portion (226) formed to extend downward. The motor body connecting portion (226) may be formed to protrude downward from the housing bottom surface (208). More specifically, the motor body connecting portion (226) may be formed to protrude downward from the housing bottom surface (208) to form a motor cover hole (202) that communicates with the air inlet (201).

[0119] The support rib penetration hole (223) and the support bracket penetration hole (224) can be arranged to be connected to each other with the motor cover hole (202).

[0120] The motor body coupling portion (226) may include a second coupling portion (227). The first coupling portion (313) of the motor body (300) may be coupled to the second coupling portion (227). For example, the first coupling portion (313) may be formed to protrude outwardly, and the second coupling portion (227) may be formed to be recessed outwardly into the motor body coupling portion (226) so that they may be coupled to each other.

[0121] When the motor cover (200) is coupled to the motor body (300), the support (329) of the motor body (300) may be arranged to be inserted into the support through-hole (224) of the motor cover (200). When the motor cover (200) is coupled to the motor body (300), the support rib (328) of the motor body (300) may be arranged to be inserted into the support rib through-hole (223) of the motor cover (200). Therefore, the motor cover (200) may be more stably mounted on the motor body (300).

[0122] A motor (100) according to one embodiment includes a stator (130). The motor (100) includes a bearing (1513). The motor (100) includes a rotor (151) that is arranged to rotate about a rotation axis (R) by electromagnetically interacting with the stator (130). The motor (100) includes an impeller (152) that is coupled to one end of the rotor (151) and rotates to generate a flow of air. The motor (100) includes a motor body (300) that accommodates the stator (130), the rotor (151), and the impeller (152). The motor body (300) includes a cover portion (310) that is arranged to cover the impeller (152) when the rotor (151) and the impeller (152) are accommodated therein, and a support portion (320) that rotatably supports the rotor (151). The above support (320) includes a bearing support (325) to which the bearing (1513) is coupled. The support (320) includes an opening (327) formed to enable access to the bearing support (325) from the outside of the support (320).

[0123] When the cover part (310) covers the impeller (152), the bearing (1513) can be arranged in a state where it can be combined with the bearing support part (325). The opening (327) is opened toward the outside of the support part (320) in a direction intersecting the direction in which the rotation axis (R) extends so that a user can approach the bearing support part (325) through the opening (327) and combine the bearing (1513), and the bearing support part (325) can be arranged spaced apart from the cover part (310) toward the opening (327).

[0124] The above stator (130) may be provided to be accommodated in the support (320). The bearing support (325) may be provided to be positioned between the stator (130) and the cover (310) when the stator (130) is accommodated in the support (320).

[0125] The motor cover (200) may further be combined with the motor body (300) to cover the motor body (300). The motor cover (200) may include a guide surface that guides air to the impeller (152) when the impeller (152) rotates.

[0126] The above guide surface may include a first guide surface (211) that is spaced apart from the support portion (320) and is provided to cover the support portion (320). The above guide surface may include a second guide surface (212) that is bent and extends from the first guide surface (211) toward the impeller (152).

[0127] The second guide surface (212) may be formed to extend from the first guide surface (211) so that the inner surface of the motor cover (200) narrows from the support portion (320) toward the cover portion (310).

[0128] The cover part (310) may include a first coupling part (313) formed along the outer circumference of the cover part (310). The motor cover (200) may include a second coupling part (227) formed along the inner circumference of the motor cover (200). The first coupling part (313) and the second coupling part (227) may be coupled to each other to couple the motor cover (200) to the motor body (300).

[0129] The above support member (320) may include a support member (329) that extends in a direction parallel to the direction in which the rotation axis (R) extends from the cover member (310). The support member (320) may include a support rib (328) that is formed to protrude in a direction intersecting the direction in which the rotation axis (R) extends from the support member (329) and supports the motor cover (200).

[0130] The above motor cover (200) may include a support groove (222) formed on the inner surface of the motor cover (200). The support rib (328) may be inserted into the support groove (222) to support the motor cover (200) to the support member (320).

[0131] The above support groove (222) can be formed to extend in a direction parallel to the direction in which the rotation axis (R) extends on the first guide surface (211).

[0132] The above motor cover (200) may further include a through hole (223, 224) formed in the second guide surface (212) so that the support (329) and the support rib (328) pass through it when combined with the motor body (300).

[0133] The above support member (320) may further include a plurality of support members (329) spaced apart from the cover member (310) along the outer circumferential surface of the cover member (310) in a direction parallel to the direction in which the rotation axis (R) extends. The opening (327) may be formed between the plurality of spaced apart support members (329).

[0134] The rotor (151) may further include an additional bearing (1514) provided to support the rotor (151) to rotate. The motor body (300) may further include a stator insertion hole (322) formed in the support member (320) to insert the stator (130). The motor body (300) may further include a cover member (110) coupled with the support member (320) to cover the stator insertion hole (322). The additional bearing (1514) may be provided to be coupled to the cover member (110) to support the rotor (151) to rotate.

[0135] The above support member (320) may further include an insertion hole forming rib (321) arranged along the outer circumference of the stator insertion hole (322) to form the stator insertion hole (322). The stator (130) may be provided to be supported by the insertion hole forming rib (321) when inserted into the stator insertion hole (322).

[0136] The cover part (310) may further include a protruding rib (317, 318) that protrudes inwardly along the inner surface of the cover part (310). When the impeller (152) is covered by the cover part (310), the impeller (152) may be arranged to come into contact with the protruding rib (317, 318).

[0137] A cleaner (1) according to one embodiment includes a suction head (16), a main body (12) communicating with the suction head (16), and a motor (100) provided inside the main body (12) to form a suction air flow from the suction head (16) into the inside of the main body (12). The motor (100) includes a stator (130). The motor (100) is provided to rotate about a rotation axis (R) by electromagnetically interacting with the stator (130), and includes a rotor (151) including a bearing (1513). The motor (100) includes an impeller (152) coupled to one end of the rotor (151) to generate a flow of air by rotating. The motor (100) includes a motor body (300) that accommodates the stator (130), the rotor (151), and the impeller (152). The motor body (300) includes a cover portion (310) configured to cover the impeller (152) when the rotor (151) and the impeller (152) are accommodated therein, and a support portion (320) configured to rotatably support the rotor (151). The support portion (320) includes a bearing support portion (325) to which the bearing (1513) is coupled. The support portion (320) includes an opening (327) formed to enable access to the bearing support portion (325) from the outside of the support portion (320).

[0138] When the cover part (310) covers the impeller (152), the bearing (1513) can be arranged in a state where it can be combined with the bearing support part (325). The opening (327) is opened toward the outside of the support part (320) in a direction intersecting the direction in which the rotation axis (R) extends so that a user can approach the bearing support part (325) through the opening (327) and combine the bearing (1513), and the bearing support part (325) can be arranged spaced apart from the cover part (310) toward the opening (327).

[0139] The motor cover (200) may further be coupled to the motor body (300) to cover the motor body (300). The motor cover (200) may include a guide surface (211, 212) that guides air to the impeller (152) when the impeller (152) rotates. The guide surface (211, 212) may include a first guide surface (211) that is spaced apart from the support portion (320) and is provided to cover the support portion (320). The guide surface (211, 212) may include a second guide surface (212) that is bent and extends from the first guide surface (211) toward the impeller (152).

[0140] The support member (320) may include a support member (329) extending in a direction parallel to the direction in which the rotation axis (R) extends from the cover member (310). The support member (320) may include a support rib (328) formed to protrude in a direction intersecting the direction in which the rotation axis (R) extends from the support member (329) and to support the motor cover (200). The motor cover (200) may include a support groove (222) formed on the inner surface of the motor cover (200). The support rib (328) may be inserted into the support groove (222) to support the motor cover (200) to the support member (320).

[0141] A motor (100) according to one embodiment includes a stator (130). The motor (100) includes a rotor assembly (150) that is arranged to rotate by electromagnetic interaction with the stator (130). The motor (100) includes a motor body (300) that accommodates the stator (130) and the rotor assembly (150). The rotor assembly (150) includes a rotor (151) that rotates about a rotation axis (R) including a bearing (1513) and an impeller (152) that is coupled to one end of the rotor (151) and rotates to generate a flow of air. The motor body (300) includes a cover portion (310) that is arranged to cover the impeller (152) when the rotor assembly (150) is accommodated therein, and a support portion (320) that rotatably supports the rotor (151). The above support (320) includes a bearing support (325) to which the bearing (1513) is coupled and an opening (327) formed to enable access to the bearing support (325) from the outside of the support (320).

[0142] According to the idea of ​​the present disclosure, since the motor body does not include a structure for guiding air, the motor can be made lighter as the motor body is lighter.

[0143] According to the idea of ​​the present disclosure, a bearing support formed in a motor body is provided so as to be accessible from the outside, so that a rotor equipped with an impeller is first inserted into the motor body to adjust the clearance between the impeller and the motor body, and then a bearing coupled to the rotor is coupled to the bearing support of the motor body to fix the rotor to the motor body, thereby allowing more precise adjustment of the clearance between the impeller and the motor body.

[0144] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0145] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. Stator; A rotor including a bearing and arranged to rotate about a rotation axis by electromagnetically interacting with the stator; An impeller that is coupled to one end of the rotor and rotates to generate air flow; and A motor body including the stator, the rotor and the impeller; When the above motor body accommodates the above rotor and the above impeller, A cover part provided to cover the above impeller; and A support member that rotatably supports the rotor; The above support part, A bearing support to which the above bearing is coupled, and A motor including an opening formed to allow access to the bearing support from the outside of the support.

2. In paragraph 1, When the above cover part covers the impeller, the bearing is arranged in a state where it can be connected to the bearing support part, A motor in which the opening is opened toward the outside of the support in a direction intersecting the direction in which the rotation axis extends so that a user can access the bearing support through the opening and engage the bearing, and the bearing support is positioned away from the cover toward the opening.

3. In paragraph 1, The above stator is arranged to be received in the above support, A motor in which the bearing support member is positioned between the stator and the cover member when the stator is accommodated in the support member.

4. In paragraph 1, Further comprising a motor cover coupled with the motor body to cover the motor body; The above motor cover is a motor including a guide surface that guides air to the impeller when the impeller rotates.

5. In paragraph 4, The above guide surface is, A first guide surface provided to cover the support portion and spaced apart from the support portion; and A motor including a second guide surface extending and bending toward the impeller from the first guide surface.

6. In paragraph 5, A motor in which the second guide surface is formed to extend from the first guide surface so that the inner surface of the motor cover narrows from the support portion toward the cover portion.

7. In paragraph 4, The above cover portion includes a first joining portion formed along the outer circumference of the cover portion, The above motor cover includes a second connecting portion formed along the inner surface of the above motor cover, A motor in which the first coupling portion and the second coupling portion are coupled to each other to couple the motor cover to the motor body.

8. In paragraph 5, The above support part, A support extending in a direction parallel to the direction in which the rotation axis extends from the cover portion; and A motor including a support rib that is formed to protrude in a direction intersecting the direction in which the rotation axis extends from the support and supports the motor cover.

9. In paragraph 8, The above motor cover includes a support groove formed on the inner surface of the above motor cover, A motor in which the above support rib is inserted into the above support groove to support the motor cover on the support part.

10. In paragraph 9, A motor in which the above support groove is formed to extend in a direction parallel to the direction in which the rotation axis extends on the first guide surface.

11. In paragraph 10, A motor wherein the motor cover further includes a through hole formed in the second guide surface so that the support member and the support rib penetrate therethrough when combined with the motor body.

12. In paragraph 2, The above support part further includes a plurality of support members spaced apart from the cover part along the outer circumference of the cover part in a direction parallel to the direction in which the rotation axis extends, The above opening is a motor formed between a plurality of spaced supports.

13. In paragraph 1, The above rotor further includes an additional bearing provided to support rotation of the above rotor, The above motor body, A stator insertion hole formed in the support so that the stator can be inserted; and It further includes a cover member that is coupled to the support member to cover the stator insertion hole. A motor in which the above additional bearing is coupled to the cover member and is provided to support the rotor so as to be rotatable.

14. In paragraph 13, The above support further includes an insertion hole forming rib arranged along the outer periphery of the stator insertion hole to form the stator insertion hole, A motor in which the stator is supported by the insertion hole forming rib when inserted into the stator insertion hole.

15. In paragraph 1, The above cover part further includes a protruding rib that protrudes inwardly along the inner surface of the cover part, A motor in which the impeller is arranged to come into contact with the protruding rib when the impeller is covered by the cover part.

Images