WO2021225228A1 - 모터 어셈블리 - Google Patents
모터 어셈블리 Download PDFInfo
- Publication number
- WO2021225228A1 WO2021225228A1 PCT/KR2020/012460 KR2020012460W WO2021225228A1 WO 2021225228 A1 WO2021225228 A1 WO 2021225228A1 KR 2020012460 W KR2020012460 W KR 2020012460W WO 2021225228 A1 WO2021225228 A1 WO 2021225228A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- shaft
- motor
- rotor
- fixing part
- Prior art date
Links
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Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/12—Machines characterised by the bobbins for supporting the windings
Definitions
- the present invention relates to a motor assembly.
- a motor is a device that implements a driving force by interaction between a stator and a rotor, and the overall structure of the stator and the rotor is basically the same.
- the type of motor is divided according to the principle that the rotor rotates due to the interaction between the stator and the rotor.
- the type of motor is divided according to the type or phase of the power applied to the stator coil.
- the type of motor is divided according to the method in which the stator coil is wound. For example, there are a DC variable voltage motor and an AC 3-phase induction motor.
- a shaft forming a rotating shaft, a rotor coupled to the shaft, and a stator core fixed to the inside of the housing are provided, and the stator is installed at predetermined intervals along the circumference of the rotor.
- stator core is provided with teeth, and a coil is wound around the teeth to form a rotating magnetic field and induce electrical interaction with the rotor to induce rotation of the rotor.
- the coil is divided into concentrated winding and distributed winding according to the method of winding.
- the centralized winding is a winding method in which the coil is wound in one slot, and the distributed winding is divided into two or more slots. It is a winding method.
- the coil wound in the central winding method is generally used in small motors.
- motors used in various home appliances for example, hair dryers, vacuum cleaners, etc.
- the cited invention discloses a brushless motor including a C-shaped stator core.
- the C-shaped stator core has projections for contacting the frame to restrain radial motion.
- the C-type stator core has a structure capable of reducing leakage flux and having a short magnetic flux path.
- the C-type stator core of the cited invention is a structure fixed to a slot formed in a frame through which the shaft passes.
- an object of the present invention is to solve the above-described problem.
- One of the various objects of the present invention is to provide a motor assembly having a structure in which a plurality of stator cores are directly fastened to a sidewall of a motor housing.
- One of the various problems of the present invention is to provide a motor assembly having a structure in which a bearing housing is provided in each of a motor housing and a housing cover for accommodating a core assembly to support a shaft.
- One of the various objects of the present invention is to provide a motor assembly having a structure in which a core assembly is fastened to an inner wall of a motor housing along a longitudinal direction of a shaft.
- One of the various objects of the present invention is to provide a motor assembly having a structure capable of securing an internal space of the motor assembly by fastening a stator element to a side wall of a housing.
- Various embodiments for solving the problems of the present invention provide a motor assembly having a structure in which the core assembly can be accommodated in a seating groove formed in the motor housing along the longitudinal direction of the shaft.
- An exemplary embodiment of the present invention provides a motor assembly having a structure in which a fixing part formed in an insulator is inserted into a fastening groove formed in a seating groove of a motor housing and fixed.
- An exemplary embodiment of the present invention includes a motor housing accommodating a motor, a shaft forming a rotation shaft of the motor, a rotor coupled to the shaft, and a plurality of cores and coils provided along the circumference of the rotor to form a magnetic path; an insulator coupled to the core to insulate between the core and the coil, wherein the insulator includes an insulating part surrounding an outer surface of the core and a fixing part protruding from the insulating part toward the radially outward side of the rotor And, the fixing part provides a motor assembly, characterized in that coupled to the inner peripheral surface of the motor housing.
- the motor housing may include a first coupling part forming an outer circumference of the motor housing, and a plurality of core support parts extending from the first coupling part in a longitudinal direction of the shaft and to which the insulator is fixed.
- the core support part is formed along the longitudinal direction of the shaft, and includes a seating groove recessed outward in the radial direction of the rotor, and a coupling groove recessed in a direction in which the seating groove is expanded, to which the insulator is fastened,
- the fixing part may be coupled to the fastening groove and accommodated in the seating groove. And the fixing part may be coupled to the fastening groove along the longitudinal direction of the shaft.
- the recessed surface forming the fastening groove may contact the protruding surface of the fixing part to engage the fixing part with the fastening groove, and at least a portion of the recessed surface may be When the fixing part is coupled to the fastening groove, a bonding groove spaced apart from the protruding surface may be formed.
- the motor housing further includes a first bearing housing supporting one side of the shaft and a first bridge extending from the core supporting unit toward the radially inner side of the shaft to connect the core supporting unit and the first bearing housing.
- the housing cover is coupled to the motor housing and includes a second bearing housing supporting the other side of the shaft, the impeller is installed on the shaft to rotate, and the housing cover is coupled to the housing cover, provided between the impeller and the rotor It may further include a diffuser and a shroud accommodating the impeller and the diffuser and having a suction part through which outside air is introduced.
- One side of the plurality of core support parts may be in contact with the first coupling part, and the other ends of the plurality of core support parts may be connected to the first bearing housing through the first bridge, respectively.
- the first bridge, the motor assembly characterized in that the first hole is formed to form a flow path through which the external air introduced through the suction unit passes through the core.
- the core may include two pole arms extending in a radial direction of the rotor and a connection part connecting the two pole arms, and the coil may be wound on each of the two pole arms.
- the coil may be wound on the connection part.
- a shaft forming the rotation shaft of the motor, a rotor coupled to the shaft, a plurality of cores provided along the circumference of the rotor to form a magnetic path, a coil and an insulator coupled to the core to insulate the core and the coil
- a core assembly comprising: and a motor housing in which the core assembly is accommodated, wherein the insulator includes an insulating part surrounding an outer surface of the core and a fixing part protruding from the insulating part toward the radially outward side of the rotor,
- the motor housing includes a seating groove in which the core assembly is accommodated and a fastening groove in which the fixing part is fixed, wherein the seating groove and the fastening groove are formed on an inner surface of the motor housing.
- the motor housing includes a core support part on which the core assembly is supported, and the seating groove and the fastening groove are formed in the core support part.
- the fastening groove provides a motor assembly provided with a bonding groove for increasing the coupling force between the fixing part and the fastening groove.
- the fixing part is provided in an H-shape protruding from both sides of the insulating part toward the radially outward side of the rotor, and the fastening groove provides a motor assembly provided to correspond to the shape of the fixing part.
- the fixing part is provided in a Y-shape protruding from both sides of the insulating part toward the radially outward side of the rotor, and the fastening groove provides a motor assembly provided to correspond to the shape of the fixing part.
- the motor housing includes a first coupling part provided in a hollow ring shape, a core support part extending along the longitudinal direction of the shaft from the first coupling part and supporting the core assembly, and supporting one side of the shaft. It provides a motor assembly including a first bearing housing, wherein the core support portion is provided in plurality.
- the fastening force of the stator core may be improved.
- the space inside the motor assembly may be secured by fixing the stator core to the inner surface of the motor housing, and the bearings on both sides of the shaft are accommodated in the motor housing and the housing cover, respectively.
- the structure for fixing the stator core is formed on the insulator, which is a basic component of the motor, having a low density, so that the coupling structure of the motor assembly can be simplified and the weight of the overall motor assembly can be reduced.
- FIG. 1 is a perspective view of a motor assembly according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of a motor assembly according to an embodiment of the present invention.
- FIG 3 is a view showing a core assembly according to an embodiment of the present invention.
- FIG. 4 is a view showing a core assembly according to another embodiment of the present invention.
- FIG. 5A is a view showing the core assembly and the motor housing of FIG. 3
- FIG. 5B is a view showing the core assembly and the motor housing of FIG. 4 .
- FIG. 6 is a view illustrating a coupling portion between the core assembly and the motor housing of FIG. 4;
- FIG. 1 is a perspective view of a motor assembly according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view of the motor assembly according to an embodiment of the present invention.
- the motor assembly 1 may be used in small household appliances. As an example, it may be used in a cleaner.
- a cleaner There are two types of vacuum cleaners: a canister type in which a nozzle for sucking dust and a dust collector for storing dust are connected with a hose, and a handy type in which a nozzle and a dust collector are provided as a single module.
- a canister type in which a nozzle for sucking dust and a dust collector for storing dust are connected with a hose
- a handy type in which a nozzle and a dust collector are provided as a single module.
- the handy type since cleaning is performed while the user grips the entire cleaner module, overall miniaturization and weight reduction of the cleaner are required.
- the motor assembly 1 may be applied to a small household appliance to meet the above-mentioned needs.
- the motor assembly 1 of this embodiment may include a shroud 10 , an impeller 20 ⁇ a diffuser 30 , a housing cover 40 , a core assembly 5 , and a motor housing 60 .
- the shroud 10 may be guided by inhaling external air. And the upper exterior of the motor assembly may be formed.
- the shroud 10 may include a suction unit 101 ⁇ an inclined portion 102 ⁇ a third coupling portion 103 .
- the suction unit 101 may be provided in a hollow ring shape at the upper end of the shroud 10 . Since outside air is introduced through the suction part 101 , the diameter of the suction part 101 may be designed in consideration of the diameter of the impeller 20 .
- the shroud 10 may include an inclined portion 102 extending from the suction portion 101 while forming a gentle curve.
- the inclined portion 102 may be provided in a shape in which a diameter increases in an axial direction from the suction portion 101 .
- the inclined portion 102 may form a gentle curve in order to minimize an element that may act as a resistance to the flow of air introduced through the suction portion 101 .
- the suction part 101 may be formed at one end of the inclined part 102
- the third coupling part 103 may be formed at the other end of the inclined part 102
- the third coupling portion 103 may extend radially outward from the other end of the inclined portion 102 to form a predetermined thickness.
- the third coupling part 103 may contact one surface of the second coupling part 403 of the housing cover 40 to be described later to couple the shroud 10 and the housing cover 40 .
- various structures for coupling the third coupling part 103 and the second coupling part 403 within the thickness of the third coupling part 103 may be applied.
- the impeller 20 may include a through hole 20a , a blade 203 , and an impeller body 201 .
- the impeller 20 may be installed on one side of the shaft 52 .
- the impeller 20 may be installed opposite to the other side of the shaft 52 on which the rotor 53 is installed based on the axial direction of the shaft 52 .
- the impeller 20 may be fixed to one side of the shaft 52 .
- the impeller 20 may be fixed to the shaft 52 in various ways, for example, by a screw fastening method.
- the impeller body 201 may be provided in a shape in which a circumference thereof is widened along the axial direction of the shaft 52 .
- the blade 203 may extend from the outer surface of the impeller body 201 toward the radially outward side of the shaft 52 .
- the blade 203 may be provided along the longitudinal direction of the impeller body 201 .
- the blades 203 may be disposed to be spaced apart from each other in the circumferential direction on the outer surface of the impeller body 201 .
- the impeller 20 of the present embodiment may be provided as a four-flow impeller that sucks in gas such as air in the axial direction of the shaft 52 and discharges the gas in an oblique direction between the centrifugal direction and the axial direction.
- the gas flowing into the inside of the shroud 10 through the suction unit 101 may be guided to the motor housing 60 side along the outer surface of the impeller body 201 by the rotation of the blade 203 .
- the impeller 20 may be provided as a centrifugal impeller that sucks in gas in an axial direction and discharges it in a centrifugal direction.
- the impeller 20 will be mainly described in the case of a four-flow type impeller.
- the diffuser 30 may include a through hole 30a , a fastening hole 30b , a diffuser body 301 , and a vane 303 .
- the diffuser 30 may convert the dynamic pressure of the gas passing through the impeller 20 into a static pressure.
- the diffuser 30 may be fastened to the shaft 52 by inserting the shaft 52 into the through hole 30a, and the diffuser 30 may be provided between the impeller 20 and the rotor 53 . can Therefore, the through hole 30a may be provided at a position communicating with the through hole 20a of the impeller 20 when the impeller 20 and the diffuser 30 are coupled to the shaft 52 .
- the fastening hole 30b is configured to couple the diffuser 30 to the housing cover 40 .
- the diffuser body 301 may be provided in a shape in which a circumference thereof is widened along the axial direction of the shaft 52 .
- the vane 303 may extend radially outward of the shaft 52 from the outer surface of the diffuser body 301 .
- the vane 303 may be provided along the length direction of the diffuser body 301 .
- the vanes 303 may be disposed to be spaced apart from each other in the circumferential direction on the outer surface of the diffuser body 301 .
- the gas flowing into the shroud 10 through the suction unit 101 can be guided to the space between the shroud 10 and the diffuser 30 by the impeller 20, and the shroud
- the gas introduced between the inner surface of 10 and the diffuser 30 may be guided toward the core assembly 5 by the plurality of vanes 303 .
- the housing cover 40 may include a through hole 40a , a fastening hole 40b , a second bearing housing 401 , a second bridge 402 , and a second coupling part 403 .
- the through hole 40a is a configuration into which the shaft 52 is inserted, and when the housing cover 40 , the diffuser 30 and the impeller 20 are coupled to the shaft 52 , the through hole 20a of the impeller and It may be formed at a position communicating with the through hole 30a of the diffuser.
- the fastening hole 40b is a configuration for coupling the diffuser 30 and the housing cover 40.
- the position communicates with the fastening hole 30b of the diffuser. can be formed in
- the second bearing housing 401 is configured to accommodate the second bearing 50 for supporting one side of the shaft 52 , and is preferably provided in the center of the housing cover 40 .
- the second bearing 50 may be, for example, a ball bearing, and the shaft 52 may be formed with a step recessed in the radial direction on the outer surface of the shaft 52 to support the second bearing 50 .
- the shaft 52 may be formed with a step protruding radially outward from the outer surface of the shaft 52 to support the second bearing 50 .
- the second coupling portion 403 extends radially outwardly of the shaft 52 to form a predetermined thickness.
- One surface of the second coupling part 403 is in contact with the third coupling part 103 of the shroud 10 , and the other surface of the second coupling part 403 is the first coupling part of the motor housing 60 .
- the shroud 10 , the housing cover 40 , and the motor housing 60 may be coupled. It goes without saying that various structures for the above-described coupling may be applied within the thickness of the second coupling part 403 .
- the second bridge 402 connects the second bearing housing 401 and the second coupling part 403 .
- a plurality of second bridges 402 may be provided for structural stability of the housing cover 40 , and may be formed to a predetermined thickness to secure rigidity of the second bridge 402 .
- the second bridge 402 of this embodiment forms a predetermined inclination along the longitudinal direction of the shaft 52 .
- the second bridge 402 is provided to be inclined, a portion acting as a resistance to the flow of external air introduced through the suction unit 101 can be minimized.
- the diffuser 30 may be formed integrally with the housing cover 40 , but preferably may be manufactured separately from the housing cover 40 and then be coupled to the housing cover 40 .
- the rotor 53 may be provided to surround a part of the outer surface of the shaft 52 .
- the shaft 52 can rotate by electromagnetic interaction between the rotor 53 and the core assembly 5, and as the shaft 52 rotates, the impeller 20 coupled to the shaft 52 also 52 , and may be sucked into the motor assembly 1 according to the rotation of the impeller 20 .
- the core assembly 5 may include a core 54 , insulators 55a and 55b , and a coil 56 . It is exemplified that the motor of this embodiment is a brushless direct current motor (BLDC). Accordingly, the core assembly 5 of the present embodiment may be disposed outside the rotor 53 .
- BLDC brushless direct current motor
- the core 54 is provided along the circumference of the rotor 53 to form a magnetic path, and a plurality of cores 54 may be provided.
- the core 54 of this embodiment is an independent C-shaped core formed by two pole arms extending in the radial direction of the shaft 52 spaced apart from each other and a yoke connecting the two pole arms.
- the insulators 55a and 55b may be coupled to the core 54 to surround the pole arm and yoke of the core 54 and insulate between the core 54 and the coil 56 .
- the insulator may include a first insulator 55a and a second insulator 55b to be easily assembled to the core 54 .
- the motor housing 60 may include a first coupling part 601 , a core support part 603 , a first bridge 605 , and a first bearing housing 607 .
- the first coupling part 601 is configured to be coupled to the second coupling part 403 of the housing cover 40 as described above, and may be provided in a hollow ring shape.
- the core assembly 5 may be coupled to the motor housing 60 along the axial direction of the shaft 52 while passing through the first coupling portion 601 .
- the core support part 603 is configured to support the core assembly 5 , and may extend from the first coupling part 601 in the longitudinal direction of the shaft 52 .
- a seating groove 6033 may be formed on a surface of the core support 603 facing the shaft 52 .
- the core assembly 5 may be accommodated in the seating groove 6033 .
- a second hole 6031 may be formed in the core support part 603 . Heat generated by the current flowing in the coil 56 through the second hole 6031 is released, or the outside air introduced through the suction unit 101 passes through the core assembly 5 to the second hole 6031 ) by discharging, it will be possible to cool the core assembly (5).
- the first bearing housing 607 has a configuration in which the first bearing 57 for supporting one side of the shaft 52 is accommodated. Accordingly, the first bearing housing 607 is preferably formed in the center of the motor housing 60 .
- the first bearing 57 may be, for example, a ball bearing. Since the first bearing 57 and the second bearing 50 support both sides of the shaft 52 , the shaft 52 may rotate stably.
- the first bridge 605 connects the first bearing housing 607 and the core support part 603 .
- a plurality of first bridges 605 may be provided for structural stability of the motor housing 60 , and may be formed to a predetermined thickness in order to secure rigidity of the second bridge 402 .
- a first hole 6051 may be formed in the first bridge 605 .
- the first hole 6051 may be formed within the thickness of the first bridge 605 , and when a plurality of the first bridges 605 are provided while forming a predetermined thickness, in the longitudinal direction of the shaft 52 . It may act as a resistance to the flow passing through the interior of the motor housing 60 along the. Therefore, in the first bridge 605 of the present embodiment, the first hole 6051 is formed along the longitudinal direction of the first bridge 605 to minimize the portion acting as a resistance to flow and at the same time, the motor housing 60 rigidity can be ensured.
- FIG. 3 is a view showing a core assembly according to an embodiment of the present invention
- FIG. 5A is a view showing the core assembly and the motor housing of FIG. 3 .
- the core assembly 5 of this embodiment may include a core 54 , an insulator 55 , and a coil 56 .
- the insulator 55 surrounds a part of the outer peripheral surface of the core 54 and insulates between the core 54 and the coil 56 .
- the insulator 55 may be provided to surround the rest of the core 54 except for the pole shoe 543 .
- the insulator 55 surrounds the two pole arms 541 and the connecting portion 542 connecting the two pole arms 541 , and the pole shoes 543 are spaced apart from the rotor 53 by a predetermined distance. It is provided to surround at least a part of the outer peripheral surface.
- the insulator 55 may include an insulating part 551 that surrounds the pole arm 541 and the connection part 542 of the core 54 and insulates between the core 54 and the coil 56 .
- the insulator 55 may include a fixing part 553 protruding from the insulating part 551 toward the radially outward side of the rotor 53 .
- the radially outer side of the rotor 43 means the same direction as the radial direction and the outer side of the shaft 52 because the rotor 43 is provided to surround a part of the outer circumferential surface of the shaft 52 .
- the insulator 55 may be integrally formed with a part surrounding the pole arm 541 of the core and a part surrounding the connection part 542 connecting the pole arm and the pole arm, and the fixing part 553 of the core A portion surrounding the connection portion may be formed to extend outwardly in the radial direction of the rotor 43 .
- the insulating part 551 of the insulator 55 surrounds the pole arms 541 of the core 54 and the connection part 543 connecting one side of each of the pole arms, and the fixing part 553 of the insulator 55 is
- the insulator 55 is provided in a Y-shape as a whole by protruding from the insulating part 551 outward in the radial direction of the rotor 53 .
- the fixing part 553 may be coupled to the inner circumferential surface of the motor housing 60 .
- the core assembly 5 may be accommodated in the seating groove 6033 , and the fixing part 553 may be fixed to the fastening groove 6035 .
- the seating groove 6033 and the fastening groove 6035 are formed on the inner surface of the motor housing 60 , and more specifically, the motor housing 60 is provided in a hollow ring shape to form an outer circumference of the motor housing 60 . It may include a first coupling portion 601 and a core support portion 603 extending from the first coupling portion 601 in the longitudinal direction of the shaft 52 to support the core assembly 5 .
- the first coupling part 601 is provided with a plurality of fastening holes 60b along the circumference of the first coupling part 601 so that the motor housing 60 and the housing cover 40 are connected through the fastening holes 60b. can be combined.
- the seating groove 6033 and the fastening groove 6035 may be formed in the core support part 603 .
- the seating groove 6033 may be formed along the longitudinal direction of the shaft 52 , and may be recessed toward the radially outer side of the rotor 53 .
- the seating groove 6033 is a part on which the core assembly 5 is seated, and a step is formed in some of the seating grooves 6033 to limit the depth at which the core assembly 5 is inserted along the longitudinal direction of the shaft 52 . can do.
- the step may support the core assembly 5 in the axial direction.
- the fastening groove 6035 is recessed in the direction in which the seating groove 6033 expands, so that the insulator 55 is fastened. That is, the insulator 55 may be fixed to the inner wall of the motor housing 60 by fitting the fixing part 553 into the fastening groove 6035 . In addition, the fixing part 553 may be coupled to the fastening groove 6035 along the longitudinal direction of the shaft 52 .
- the fixing part 553 When the fixing part 553 is coupled to the fastening groove 6035 , the recessed surface forming the fastening groove 6035 comes into contact with the protruding surface of the fixing part 553 so that the fixing part 553 is connected to the fastening groove. (6035) may be engaged. That is, the fixing part 553 and the fastening groove 6035 may be in surface contact, and the fixing part 553 may be fixed to the fastening groove 6035 .
- the coil 56 may be wound on each of the two pole arms 541 , or may be wound on the connection part 542 .
- FIG. 4 is a view showing a core assembly according to another embodiment of the present invention
- FIG. 5B is a view showing the core assembly and the motor housing of FIG. 4
- Another embodiment of the present invention disclosed in FIGS. 4 and 5B is different from the one embodiment of the present invention described in FIG. 3 in that the structure for fixing the core assembly to the motor housing is different, but the other structures are the same, so they overlap. Description of the contents is omitted.
- the insulator 55b of this embodiment includes an insulating part 551b and a fixing part 553b.
- the insulating part 551b corresponds to the shape of the core 54 as the core 54 is provided in a C shape including two pole arms 541 and a connection part 542 connecting the two pole arms. It is provided to surround the pole arm 541 and the connection part 542 .
- the fixing part 553b may be provided to protrude from both sides of the insulating part 551b toward the radially outward side of the rotor 53 . Accordingly, the insulator 55b of this embodiment including the fixing part 553b and the insulating part 551b may be provided in an H shape.
- a seating groove 6033b and a fastening groove 6035b may be formed in the core support part 603 of the motor housing to correspond to the shape of the insulator 55b.
- the fixing part 553b occupies a larger area than the insulator 55 shown in FIGS. 3 and 5A , and the seating groove 6033b conforms to the shape of the fixing part 553b. ) and the fastening groove 6035b may also increase in volume.
- the Y-shaped insulator structure may be more suitable than the H-shaped insulator structure.
- the structure may be more suitable than the Y-shaped insulator structure.
- FIG. 6 is a view illustrating a coupling portion between the core assembly and the motor housing of FIG. 4 . Hereinafter, it will be described with reference to FIG. 6 .
- a bonding groove 6037 for increasing the coupling force between the fixing part 553b and the fastening groove 6035b may be formed.
- An adhesive material may be introduced through the bonding groove 6037 to more firmly fix the insulator to the inner wall of the motor housing.
- the bonding groove 6037 is formed on at least a part of the recessed surface of the fastening groove 6035b, and when the fixing part 553b is coupled to the fastening groove 6035b, the protruding surface of the fixing part 553b and It can be defined as a space that is spaced apart.
- the bonding groove 6037 may also be applied to the Y-shaped insulator 55 structure described with reference to FIGS. 3 and 5A .
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims (20)
- 모터를 수용하는 모터 하우징;상기 모터의 회전축을 형성하는 샤프트;상기 샤프트에 결합되는 로터;상기 로터의 둘레를 따라 구비되어 자로를 형성하는 복수개의 코어;코일; 및상기 코어에 결합되어 상기 코어와 상기 코일 사이를 절연하는 인슐레이터;를 포함하고,상기 인슐레이터는,상기 코어의 외면을 감싸는 절연부; 및상기 절연부로부터 상기 로터의 반경방향 외측을 향해 돌출된 고정부;를 포함하고,상기 고정부는 상기 모터 하우징의 내주면에 결합되는 것을 특징으로 하는 모터 어셈블리.
- 제1항에 있어서,상기 모터 하우징은,상기 모터 하우징의 외곽 둘레를 형성하는 제1 결합부; 및상기 제1 결합부로부터 상기 샤프트의 길이방향을 따라 연장되고, 상기 인슐레이터가 고정되는 복수개의 코어 지지부;를 포함하는 것을 특징으로 하는 모터 어셈블리.
- 제2항에 있어서,상기 코어 지지부는, 상기 샤프트의 길이방향을 따라 형성되고, 상기 로터의 반경방향 외측을 향해 함몰된 안착홈; 및상기 안착홈이 확장되는 방향으로 함몰 형성되어 상기 인슐레이터가 체결되는 체결홈;을 포함하고,상기 고정부는, 상기 체결홈에 결합되어 상기 안착홈에 수용되는 것을 특징으로 하는 모터 어셈블리.
- 제3항에 있어서,상기 고정부는, 상기 샤프트의 길이방향을 따라 상기 체결홈에 결합되는 것을 특징으로 하는 모터 어셈블리.
- 제3항에 있어서,상기 고정부가 상기 체결홈에 결합될 시, 상기 체결홈을 형성하는 함몰면은 상기 고정부의 돌출면에 접촉하여 상기 고정부가 상기 체결홈에 맞물리는 것을 특징으로 하는 모터 어셈블리.
- 제5항에 있어서,상기 함몰면 중 적어도 일부는, 상기 고정부가 상기 체결홈에 결합될 시, 상기 돌출면과 이격되는 본딩홈;이 형성되는 것을 특징으로 하는 모터 어셈블리.
- 제2항에 있어서,상기 모터 하우징은,상기 샤프트의 일측을 지지하는 제1 베어링 하우징; 및상기 코어 지지부로부터 상기 샤프트의 반경방향 내측을 향해 연장되어 상기 코어 지지부와 상기 제1 베어링 하우징을 연결하는 제1 브릿지;를 더 포함하는 것을 특징으로 하는 모터 어셈블리.
- 제7항에 있어서,상기 모터 하우징에 결합되고, 상기 샤프트의 타측을 지지하는 제2 베어링 하우징을 포함하는 하우징 커버;를 더 포함하는 것을 특징으로 하는 모터 어셈블리.
- 제8항에 있어서,상기 샤프트에 설치되어 회전하는 임펠러;상기 하우징 커버에 결합되고, 상기 임펠러와 상기 로터 사이에 구비되는 디퓨저; 및상기 임펠러와 상기 디퓨저를 수용하며 외기가 유입되는 흡입부가 형성되는 쉬라우드;를 더 포함하는 것을 특징으로 하는 모터 어셈블리.
- 제9항에 있어서,상기 복수개의 코어 지지부의 일측은 상기 제1 결합부에 접하며, 상기 복수개의 코어 지지부의 타측은 각각 상기 제1 베어링 하우징과 상기 제1 브릿지를 통해 연결되는 것을 특징으로 하는 모터 어셈블리.
- 제10항에 있어서,상기 제1 브릿지는, 상기 흡입부를 통해 유입된 외기가 상기 코어를 통과하는 유로를 형성하기 위해 제1홀이 형성되는 것을 특징으로 하는 모터 어셈블리.
- 제1항에 있어서,상기 코어는,상기 로터의 반경방향을 향해 연장되는 두 개의 폴암; 및상기 두 개의 폴암을 연결하는 연결부;를 포함하는 것을 특징으로 하는 모터 어셈블리.
- 제12항에 있어서,상기 코일은 상기 두 개의 폴암 각각에 권선되는 것을 특징으로 하는 모터 어셈블리.
- 제12항에 있어서,상기 코일은 상기 연결부에 권선되는 것을 특징으로 하는 모터 어셈블리.
- 모터의 회전축을 형성하는 샤프트;상기 샤프트에 결합되는 로터;상기 로터의 둘레를 따라 구비되어 자로를 형성하는 복수개의 코어, 코일 및 상기 코어에 결합되어 상기 코어와 상기 코일 사이를 절연하는 인슐레이터를 포함하는 코어 어셈블리; 및상기 코어 어셈블리가 수용되는 모터 하우징;을 포함하고,상기 인슐레이터는 상기 코어의 외면을 감싸는 절연부 및 상기 절연부로부터 상기 로터의 반경방향 외측을 향해 돌출된 고정부를 포함하고,상기 모터 하우징은 상기 코어 어셈블리가 수용되는 안착홈 및 상기 고정부가 고정되는 체결홈을 포함하고,상기 안착홈 및 상기 체결홈은 상기 모터 하우징의 내면에 형성되는 모터 어셈블리.
- 제15항에 있어서,상기 모터 하우징은 상기 코어 어셈블리가 지지되는 코어 지지부를 포함하고,상기 안착홈 및 상기 체결홈은 상기 코어 지지부에 형성되는 모터 어셈블리.
- 제15항에 있어서,상기 체결홈에는 상기 고정부와 상기 체결홈의 결합력을 높이기 위한 본딩홈이 구비되는 모터 어셈블리.
- 제15항에 있어서,상기 고정부는 상기 절연부의 양측에서 상기 로터의 반경방향 외측을 향해 돌출되어 H형상으로 구비되고,상기 체결홈은 상기 고정부의 형상과 대응되도록 구비되는 모터 어셈블리.
- 제15항에 있어서,상기 고정부는 상기 절연부의 양측에서 상기 로터의 반경방향 외측을 향해 돌출되어 Y자형상으로 구비되고,상기 체결홈은 상기 고정부의 형상과 대응되도록 구비되는 모터 어셈블리.
- 제15항에 있어서,상기 모터 하우징은,중공의 링형상으로 구비되는 제1 결합부;상기 제1 결합부에서 상기 샤프트의 길이방향을 따라 연장되며 상기 코어 어셈블리를 지지하는 코어지지부; 및상기 샤프트의 일측을 지지하는 제1 베어링 하우징;을 포함하고,상기 코어 지지부는 복수 개 구비되는 모터 어셈블리.
Priority Applications (3)
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EP20934836.6A EP4148956A4 (en) | 2020-05-08 | 2020-09-16 | MOTOR ARRANGEMENT |
US17/923,848 US20230179031A1 (en) | 2020-05-08 | 2020-09-16 | Motor assembly |
AU2020446627A AU2020446627B2 (en) | 2020-05-08 | 2020-09-16 | Motor assembly |
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KR10-2020-0055244 | 2020-05-08 | ||
KR1020200055244A KR20210136671A (ko) | 2020-05-08 | 2020-05-08 | 모터 어셈블리 |
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EP (1) | EP4148956A4 (ko) |
KR (1) | KR20210136671A (ko) |
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JPH08251901A (ja) * | 1995-03-03 | 1996-09-27 | Canon Inc | 電磁駆動装置 |
GB2563614B (en) * | 2017-06-20 | 2020-06-17 | Dyson Technology Ltd | Brushless motor |
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2020
- 2020-05-08 KR KR1020200055244A patent/KR20210136671A/ko not_active Application Discontinuation
- 2020-09-16 US US17/923,848 patent/US20230179031A1/en active Pending
- 2020-09-16 EP EP20934836.6A patent/EP4148956A4/en active Pending
- 2020-09-16 AU AU2020446627A patent/AU2020446627B2/en active Active
- 2020-09-16 WO PCT/KR2020/012460 patent/WO2021225228A1/ko unknown
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JP2002199666A (ja) * | 2000-12-21 | 2002-07-12 | Hitachi Ltd | 回転電機及びその製造方法 |
JP2008011675A (ja) * | 2006-06-30 | 2008-01-17 | Jtekt Corp | ブラシレスモータ及び電動パワーステアリング装置 |
JP2014121118A (ja) * | 2012-12-13 | 2014-06-30 | Aisan Ind Co Ltd | ステータ及び電動ポンプ |
KR20140118456A (ko) * | 2013-03-29 | 2014-10-08 | 삼성전기주식회사 | 디퓨져 결합모듈 및 이를 포함하는 전동송풍기 |
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AU2020446627A1 (en) | 2023-01-19 |
EP4148956A4 (en) | 2024-06-12 |
US20230179031A1 (en) | 2023-06-08 |
KR20210136671A (ko) | 2021-11-17 |
AU2020446627B2 (en) | 2024-03-28 |
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