WO2018179833A1 - モータ - Google Patents
モータ Download PDFInfo
- Publication number
- WO2018179833A1 WO2018179833A1 PCT/JP2018/003657 JP2018003657W WO2018179833A1 WO 2018179833 A1 WO2018179833 A1 WO 2018179833A1 JP 2018003657 W JP2018003657 W JP 2018003657W WO 2018179833 A1 WO2018179833 A1 WO 2018179833A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cover
- resin casing
- motor
- bearing
- bearing housing
- Prior art date
Links
Images
Classifications
-
- 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
- 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
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- 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
- H02K5/08—Insulating casings
-
- 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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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
Definitions
- the present invention relates to a motor.
- Patent Document 1 Conventional motors are disclosed in Patent Document 1, Patent Document 2, and the like.
- the rotor In the inner rotor type molded motor described in Patent Document 1, the rotor is disposed on the inner diameter side of the stator that is molded with a mold resin to form an outer shell, and the output side and the non-output side of the output rotation shaft of the rotor are arranged. It is supported by a bearing and rotates. And a bearing is stored in the bearing house formed in the bracket arrange
- the brushless DC motor described in Patent Document 2 includes a rotor and a stator.
- the stator includes an annular stator core that forms a rotating magnetic field with the rotor, and a stator coil wound around the stator core.
- the stator is molded integrally with a housing made of resin, and the outer surface of the housing is covered with a protective cover made of metal.
- This brushless DC motor dissipates heat generated by the stator coil to the outside through a resin housing, and further covers the outer surface of the housing with a protective cover made of metal, so that the housing can be protected by an external impact. To prevent damage.
- the potential of the protective cover of the molded motor may vary depending on the equipment to be installed. In this case, depending on the potential of the protective cover, there is a possibility that electrolytic corrosion is likely to occur due to conduction between the protective cover and the bearing.
- an object of the present invention is to provide a motor that can protect against external impacts and take measures against electric corrosion of a bearing, regardless of the device to which it is attached.
- An exemplary motor of the present invention includes a rotor having a rotating shaft extending along a central axis, and a plurality of windings wound around a stator core that is radially opposed to the outer peripheral surface of the rotor via an insulator. Covering the stator, a resin casing that seals at least the insulator and the winding of the stator, a plurality of bearings that rotatably support the rotating shaft at positions spaced from each other in a central axis direction, and the resin casing A cover, wherein the stator includes a plurality of bearing housing members in which the plurality of bearings are respectively housed, the bearing housing member has conductivity, and each of the bearing housing members is formed of a conductive member. Electrically conductive, each of the plurality of bearing housing members is electrically insulated from the cover, and the cover is electrically insulated from the conductive member, That.
- FIG. 1 is an exploded perspective view of an example of a motor according to the present invention.
- FIG. 2 is a cross-sectional view of the motor shown in FIG.
- FIG. 3 is a perspective view of the stator core.
- FIG. 4 is a perspective view of a stator core provided in the stator.
- FIG. 5 is a perspective view of the rotor.
- FIG. 6 is a partial cross-sectional view showing a resin casing and a cover of a modified example of the motor according to the present embodiment.
- FIG. 7 is a partial cross-sectional view showing a resin casing and a cover of another modified example of the motor according to the present embodiment.
- FIG. 8 is an exploded perspective view of another example of the motor according to the present invention.
- FIG. 9 is a cross-sectional view of the motor shown in FIG.
- FIG. 10 is a cross-sectional view of a modified example of the motor according to the second embodiment.
- FIG. 11 is a cross-sectional view of still another example of the motor according to the present invention.
- FIG. 12 is a cross-sectional view of still another example of the motor according to the present invention.
- FIG. 13 is a sectional view of still another example of the motor according to the present invention.
- FIG. 1 is an exploded perspective view of an example of a motor according to the present invention.
- FIG. 2 is a cross-sectional view of the motor shown in FIG.
- the direction in which the central axis Ax extends that is, the left-right direction in FIG. A direction perpendicular to the axial direction is a radial direction
- a tangential direction of a circle centering on the axis is a circumferential direction.
- the axial direction is set as follows with reference to FIG. That is, in FIG. 2, a direction toward the right side in the axial direction is defined as a first direction Op, and a direction toward the left side is defined as a second direction Or.
- the “left direction” and “right direction” in this document are set for explanation. Therefore, these directions do not limit the direction when the motor A is actually used.
- the motor A includes a stator 1, a resin casing 2, a cover 3, a rotor 4, a first bearing 51, and a second bearing 52.
- the resin casing 2 covers the outer peripheral surface of the stator 1. That is, the motor A is a so-called molded motor in which the stator 1 is sealed with the resin casing 2.
- the rotor 4 is disposed inside the stator 1.
- the rotor 4 includes a rotating shaft 40 that extends along the central axis Ax. The rotating shaft 40 is supported by the first bearing 51 and the second bearing 52 and can rotate with respect to the stator 1.
- the motor A according to the present embodiment is an inner rotor type DC brushless motor in which the rotor 4 rotates inside the stator 1. And a some bearing (51, 52) supports the rotating shaft 40 rotatably in the position mutually spaced apart to the axial direction.
- FIG. 3 is a perspective view of the stator core.
- FIG. 4 is a perspective view of a stator core provided in the stator.
- the stator 1 includes a stator core 11, an insulator 12, and a winding 13.
- the stator 1 has a plurality of windings 13 wound around a stator core 11 that is radially opposed to the outer peripheral surface of the rotor 4 via an insulator 12.
- the stator 1 includes a first bearing housing member 61 that houses the first bearing 51 and a second bearing housing member 62 that houses the second bearing 52. That is, the stator 1 includes a plurality of bearing housing members (61, 62) in which a plurality of bearings (51, 52) are respectively housed.
- the stator core 11 has conductivity. As shown in FIG. 4, the stator core 11 includes an annular core back portion 111 and a teeth portion 112.
- the core back portion 111 has an annular shape that extends in the axial direction.
- the teeth portion 112 protrudes radially inward from the inner peripheral surface of the core back portion 111. That is, the stator core 11 has an annular core back portion 111 and a teeth portion 112 extending radially inward from the core back portion 111.
- the stator core 11 includes twelve teeth portions 112.
- the teeth parts 112 are arranged at equal intervals in the circumferential direction. That is, in the motor A of the present embodiment, the stator 1 has 12 slots.
- the insulator 12 covers the stator 11.
- the insulator 12 is a resin molded body.
- the insulator 12 covers the whole tooth portion 112 and covers both end surfaces of the core back portion 111 in the axial direction.
- a winding wire 13 is formed by winding a conductive wire around the tooth portion 112 covered with the insulator 12. That is, the insulator 12 includes an insulator tooth portion 121 that covers the tooth portion 112 and an insulator core back portion 122 that covers at least the axial end of the core back portion 111.
- the insulator 12 insulates the stator core 11 and the winding 13 from each other.
- the insulator 12 is a resin molded body, but is not limited thereto. The structure which can insulate the stator core 11 and the coil
- the insulator 12 insulates the stator core 11 and the winding 13. Therefore, in the stator core 11, the radially outer peripheral surface of the core back portion 111 may be exposed without being covered with the insulator 12.
- the stator core 11 may have a structure in which electromagnetic steel plates are laminated, or may be a single member such as powder firing or casting. Further, the stator core 11 may be configured to be divided into divided cores including one tooth portion 112, or may be formed by winding a belt-shaped member.
- a rotor 4 is disposed in the center of the stator 1 in the radial direction so as to penetrate in the axial direction.
- the windings 13 are disposed on each of the tooth portions 112 of the stator core 11. That is, in the motor A, twelve windings 13 are arranged.
- the twelve windings 13 provided in the stator 1 are divided into three systems (hereinafter referred to as three phases) according to the timing at which current is supplied. These three phases are referred to as a U phase, a V phase, and a W phase, respectively. That is, the stator 1 includes four U-phase windings, four V-phase windings, and four W-phase windings. In the following description, the windings of the respective phases are collectively described as the windings 13.
- stator 1 is connected to a plurality of windings 13 or connected to a control circuit (not shown) connected to the windings 13 and a substrate Bd provided in the motor A. 131.
- the plurality of windings 13 are electrically connected via the crossover part 131.
- the crossover part 131 is arrange
- the stator 1 includes a wiring portion 120 in which a crossover wire 131 is disposed on a radially outer surface of the insulator 12 that covers an end surface of the core back portion 111 on the first direction Op side. That is, the wiring part 120 extends from the axial end of the insulator core back part 122 in the axial direction (first direction Op side), and the crossover 131 is wired on the radially outer side surface of the wiring part 120. . And the recessed part 23 is located in the outer peripheral surface of the resin casing 2. As shown in FIG.
- the resin casing 2 has a cylindrical shape.
- the resin casing 2 is a resin molded body in which the stator core 11 is sealed. That is, the resin casing 2 seals at least the insulator 13 and the winding 12 of the stator 1.
- the motor A also covers the outer surface in the radial direction of the stator core 11.
- the resin casing 2 has a bottomed cylindrical shape in which at least a part of the end portion on the first direction Op side is closed. And the resin casing hole 20 extended in an axial direction is provided in the radial direction center part of a bottom part.
- a concave hole 21 that is recessed in the axial direction is provided on the outer side in the radial direction of the resin casing hole 20 on the surface on the first direction Op side of the bottom. That is, the output shaft side end surface of the resin casing 2 includes a recessed hole 20 that is recessed in the axial direction.
- a rotating shaft 40 attached to the rotor 4 passes through the resin casing hole 20 in the axial direction.
- a flange portion 611 (to be described later) of the first bearing housing member 61 is fixed to the resin casing hole 20 by insert molding. The details of the first bearing storage 61 will be described later.
- the cover 3 covers the resin casing 2.
- the cover 3 has a bottomed cylindrical shape in which at least a part of the end portion on the first direction Op side is closed. That is, the cover 3 has a cylindrical shape extending in the axial direction.
- the cover 3 is formed, for example, by extruding a metal plate. That is, the cover 3 covers at least one of the resin casings 2 on the radially outer side of the insulator 12 and on one side in the axial direction of the insulator 12 (first direction Op side). And the cover 3 is provided with the casing contact part 31 which contacts the recessed hole 21 of the resin casing 2 in the radial direction center part of the bottom part.
- the casing contact part 31 contacts along the recessed hole 21.
- the casing contact portion 31 is recessed from the first direction Op side of the cover 3 to the second direction Or side. And the center of the casing contact part 31 is provided with the cover hole 30 penetrated to the axial direction.
- the casing contact part 31 is provided with the penetration part 310 penetrated to an axial direction.
- the through-hole 310 may be a hole having a shape closed in the circumferential direction, or may be a so-called notch that is partially released in the circumferential direction.
- a conductive connecting portion 81 (described later) of the conductive member 8 is attached at a position overlapping the penetrating portion 310 in the axial direction.
- the casing contact portion 31 comes into contact with the recessed hole 21.
- the cover 3 covers the resin casing 2
- the casing contact portion 31 overlaps with the flange portion 611 when viewed in the axial direction. That is, the cover 3 includes a casing contact portion 31 that is in contact with the resin casing 2 and whose position viewed from the axial direction overlaps the flange portion.
- the casing contact part 31 presses the concave hole 21 and the axial direction. Thereby, the recessed hole 21 and the casing contact part 31 closely_contact
- the resin casing 2 includes a press-fit portion 22 and a concave portion 23 on a radially outer peripheral surface. That is, the resin casing 2 includes a press-fit portion 22 that is press-fit into the cover 3. As shown in FIG. 2, the press-fit portion 22 is provided in a portion overlapping the stator core 11 on the outer peripheral surface of the resin casing 2 in the radial direction. That is, the press-fit portion 22 overlaps the stator core 22 when the resin casing 2 is viewed in the radial direction.
- the resin casing 2 is inserted into the opening of the cover 3 from the end on the side where the recess 23 is formed. Thereafter, the resin casing 2 is fixed to the cover 3 by press fitting.
- the resin casing 2 is press-fitted into the inner peripheral surface of the cover 3 at the press-fitting portion 22.
- the press-fit portion 22 is provided at a position overlapping the stator core 11 in the radial direction. At the time of press fitting, force acts on the resin casing 2 from the cover 3 in the radial direction and the axial direction. Since the press-fit portion 22 is provided at a position that overlaps the stator core 11 having a higher strength than the resin of the resin casing 2 in the radial direction, even if a force is applied from the cover 3 during press-fit, the deformation of the resin casing 2 is unlikely to occur. .
- the concave portion 23 overlaps with the wiring portion 120 in which the crossover portion 131 of the insulator 12 on the outer peripheral surface of the resin casing 2 is arranged in the radial direction. That is, the gap Gp is located on the outside of the wiring part 120 in the radial direction. (Claim 3) Moreover, the outer peripheral surface of the resin casing 2 is provided with the recessed part 23 in the part which contact
- the recessed part 23 is provided in the edge part by the side of the 1st direction Op of the resin casing 2, and is formed continuously in the circumferential direction. In this embodiment, although formed in the radial direction edge part of the resin casing 2, it is not limited to this.
- the outer peripheral surface of the resin casing 2 is provided with a concave groove 200 extending from the concave portion 23 toward the second direction Or side.
- the condensed water accumulated in the recess 23 passes through the recessed groove 200 and is discharged to the outside from between the cover 3 and the second bearing housing member 62.
- the concave groove 200 may be omitted. Even if the concave groove 200 is omitted, the condensed water evaporates into the air in the concave portion 23 due to heat generated when the motor A is driven. Further, when the resin casing 2 is completely covered with the cover 3, a hole for draining condensed water may be provided in the cover 3 or the second bearing housing member 62.
- the resin casing 2 is inserted into the cover 3 from the side where the recess 23 is provided in the axial direction, and fixed by press-fitting.
- a gap Gp is formed in the radial direction between the portion where the recess 23 is formed and the inner surface of the cover 3. The details of the gap Gp between the resin casing 2 and the cover 3 will be described later.
- the radial thickness of the portion of the resin casing 2 where the recess 23 is provided is thinner than the thickness of the other portion of the resin casing 2. That is, the portion where the concave portion 23 is provided is a thin portion 24 having a smaller thickness than other portions.
- FIG. 5 is a perspective view of the rotor.
- the rotor 4 includes a rotor core 41, a plurality of magnets 42, and a mold part 43.
- the rotor core 41 includes a tubular member 411 extending in the axial direction and a shaft support member 412 disposed on the radially inner side of the tubular member.
- the cylindrical member 411 and the shaft support member 412 are fixed to each other by a mold part 43 which is a resin molded product.
- the rotor core 41 is a magnetic body.
- the rotor core 41 may be a laminated body in which magnetic plates are laminated in the radial direction, or may be a molded body formed by sintering a powder as the same member, for example.
- the rotary shaft 40 has a cylindrical shape.
- the rotary shaft 40 passes through the central portion in the radial direction of the shaft support member 412 of the rotor core 41.
- the rotating shaft 40 and the shaft support member 412 are relatively fixed. Examples of the fixing method include press-fitting and welding, but are not limited thereto.
- a method that can fix the rotating shaft 40 and the shaft support member 412 can be widely employed. That is, the rotating shaft 40 is fixed to the rotor 4, and the rotating shaft 40 rotates about the central axis Ax when the rotor 4 rotates.
- the plurality of magnets 42 are arranged on the radially outer side of the rotor core 41.
- a plurality of magnets 42 are arranged side by side in the circumferential direction.
- the rotor core 41 includes eight magnets 42.
- the plurality of magnets 42 are arranged, but the present invention is not limited to this.
- a magnet in which N poles and S poles are alternately magnetized in the circumferential direction may be used for a cylindrical magnetic body.
- the N pole and the S pole are used as a pair of magnetic poles, and a plurality of pairs of magnetic poles are provided.
- the magnet 42 is fixed to the rotor core 41 by, for example, a resin mold.
- the method of fixing the magnet 42 is not limited to resin molding, and a method that does not adversely affect the rotation of the rotor 4 such as adhesion, welding, or a mechanical fixing method is employed.
- the rotating shaft 40 is press-fitted into the first bearing 51 and the second bearing 52 at two locations separated in the axial direction. That is, the rotating shaft 40 is rotatably supported by the first bearing 51 and the second bearing 52 at two different locations in the axial direction.
- the end of the rotary shaft 40 on the second direction Or side is press-fitted into the inner ring of the second bearing 52.
- a portion on the first direction Op side is press-fitted into the inner ring of the first bearing 51 with respect to a portion press-fitted into the second bearing 52 of the rotary shaft 40.
- the first bearing 51 is housed in the first bearing housing member 61.
- the second bearing 52 is housed in the second bearing housing member 62.
- the first bearing housing member 61 and the second bearing housing member 62 are fixed to the resin casing 2 directly or indirectly. Accordingly, the rotating shaft 40 is rotatably supported by the resin casing 2 (the stator 1 covered with the resin casing 2) by the pair of bearings 51 and 52.
- a shaft retaining ring 401 is attached to the rotating shaft 40 on the first direction Op side, and a shaft retaining ring 402 is attached to an end portion on the second direction Or side.
- the shaft retaining ring 401 is in contact with the first bearing 51.
- the shaft retaining ring 402 is in contact with the second bearing 52. Note that the shaft retaining ring 401 and the shaft retaining ring 402 are fixed by being fitted into a groove provided on the outer peripheral surface of the rotating shaft 40.
- the shaft retaining ring 401 is in contact with the inner ring of the first bearing 51 in the second direction Or side.
- the shaft retaining ring 401 limits the movement of the rotary shaft 40 in the first direction Op relative to the first bearing 51.
- the shaft retaining ring 402 is in contact with the first direction Op side of the inner ring of the second bearing 52.
- the shaft retaining ring 402 restricts the movement of the rotating shaft 40 toward the second direction Or with respect to the second bearing 52.
- the axial movement of the first bearing 51 and the second bearing 52 with respect to the stator 1 is relatively restricted, and the axial movement of the rotating shaft 40 with respect to the stator 1 is restricted.
- the shaft retaining rings 401 and 402 employ, for example, shaft retaining rings generally called C-ring and E-ring, but are not limited thereto.
- a configuration that can contact the inner rings of the pair of bearings 51 and 52 and limit the movement of the rotating shaft 40 can be widely employed.
- the rotating shaft 40 is rotatably supported by two bearings (the 1st bearing 51 and the 2nd bearing 52), it is not limited to this. It may be supported by three or more bearings.
- the first bearing housing member 61 and the second bearing housing member 62 are made of metal such as iron or brass. That is, the bearing housing members (61, 62) have conductivity.
- the first bearing housing member 61 has a cylindrical shape in which the first bearing 51 can be housed.
- the end portion on the one axial side of the first bearing housing member 61 is provided with an end surface portion 610 penetrating in the axial direction at the central portion in the radial direction.
- the end portion on the other axial side of the first bearing housing member 61 includes a flange portion 611 extending outward in the radial direction. At least a part of the flange portion 611 is insert-molded in the resin casing 2.
- the flange portion 611 may be provided with a penetrating portion that penetrates in the axial direction.
- the through portion is not limited to the hole as long as the rotation can be reliably prevented by the resin, and may be, for example, a concave portion recessed radially inward or a convex portion protruding radially outward.
- the flange portion 611 itself may be formed in a polygonal shape (for example, a triangle or a quadrangle) or an elliptical shape to prevent rotation.
- the first bearing housing member 61 is fixed to the resin casing 2 such that the center axis thereof coincides with the center axis Ax of the stator 1 covered with the resin casing 2.
- the outer ring of the first bearing 51 is press-fitted into the first bearing housing member 61.
- the first bearing housing member 61 is a resin-sealed bearing housing member in which a part of the flange portion 611 is sealed by the resin casing 2. That is, at least one (first bearing housing member 61) of the plurality of bearing housing members (first bearing housing member 61 and second bearing housing member 62) is sealed with the resin casing 2. It is a member.
- the resin-sealed bearing housing member (first bearing housing member 61) includes a flange portion 611 extending in the radial direction. A part of the flange portion 611 is sealed by the resin casing.
- the second bearing housing member 62 holds the second bearing 52.
- the second bearing housing member 62 includes a housing portion 621 and an outer cylinder portion 620.
- the storage portion 621 has a cylindrical shape and stores the second bearing 52 therein.
- the outer ring of the second bearing 52 is press-fitted into the storage portion 621.
- the outer cylinder part 620 has a larger diameter than the storage part 621, and the end part on the second direction Or side of the resin casing 2 is press-fitted into the outer cylinder part 620. That is, after the second bearing 52 is press-fitted into the storage portion 621, the end portion on the second direction Or side of the resin casing 2 is press-fitted into the outer cylinder portion 620 of the second bearing storage member 62. Then, when the resin casing 2 is press-fitted into the second bearing housing member 62, the second bearing 62 is fixed to the stator 1 covered with the resin casing 2. The outer ring of the second bearing 52 is fixed to the stator 1, and the center axis of the second bearing 52 coincides with the center axis Ax of the stator 1.
- the storage part 621 and the outer cylinder part 620 are formed of the same member.
- the second bearing housing member 62 is manufactured by drawing a metal plate. However, it is not limited to this. Further, as shown in FIG. 2, the second bearing housing member 62 and the cover 3 are separated from each other. That is, the second bearing housing member 62 is electrically insulated from the cover 3.
- the conductive member 8 has conductivity. As shown in FIG. 2, the conductive member 8 includes a lead wire portion 80 and a conductive connection portion 81.
- the lead wire portion 80 includes a conductive wire.
- the lead wire portion 80 is disposed inside a groove 201 formed on the outer peripheral surface of the resin casing 2. In the lead wire portion 80, the outer periphery of the conducting wire is covered with an insulating coating. Thereby, the lead wire portion 80 is electrically insulated from the cover 3.
- the lead wire portion 80 is disposed in the groove 201 formed on the outer peripheral surface of the resin casing 2, but the present invention is not limited to this.
- the first terminal 801 and the second terminal 802 are attached to both ends of the lead wire portion 80.
- the 1st terminal 801 and the 2nd terminal 802 are the terminals which have the conductivity attached to the edge part of a lead wire, and can mention a flat terminal, for example.
- the first terminal 801 is electrically connected to the flange portion 611 of the first bearing housing member 61.
- the second terminal 802 is electrically connected to the outer cylinder portion 620 of the second bearing housing member 62. That is, each of the bearing housing members (the first bearing housing member 61 and the second bearing housing member 62) is electrically connected by the conductive member 8.
- 1st terminal 801 is arrange
- the first terminal 801 is electrically connected to the flange portion 611 of the first bearing housing member 61.
- the conductive connection part 81 includes a bolt and a nut.
- the conductive connection part 81 penetrates and fixes the first terminal 801 and the flange part 611. Thereby, the first terminal 801 is fixed to the flange portion 611.
- the conductive connection portion 81 overlaps the through portion 310 of the casing contact portion 31 of the cover 3 when viewed from the axial direction. That is, the conductive connection part 81 is located in the penetration part 310 (Claim 7). Thereby, the conductive connection part 81 is electrically insulated from the casing contact part 31. That is, the cover 3 is electrically insulated from the conductive member 8.
- the conductive connection part 81 is not limited to the structure using a screw.
- the first terminal 801 and the flange portion 611 may be soldered and fixed by adhesion using a conductive adhesive.
- the first terminal 801 and the flange portion 611 are electrically conductive, that is, do not have to be fixed as long as they are in contact with each other.
- As the conductive connection portion 81 a configuration in which the flange portion 611 and the first terminal 801 are electrically connected and insulated from the cover 3 can be widely adopted.
- the first terminal 801 only needs to be electrically connected to the flange portion 611. Therefore, the first terminal 801 is not limited to a configuration in which a terminal for connection (for example, a flat terminal or the like) is attached, and may be a configuration in which end portions of the lead wire portion 80 are collected.
- the second terminal 802 is sandwiched between the second bearing housing member 62 and the resin casing 2. Thereby, the second terminal 802 is electrically connected to the second bearing housing member 62.
- the second terminal 802 is connected to the end of the resin casing 2 on the second direction Or side and the second terminal 802. It is sandwiched between the outer cylinder portion 620 of the bearing housing member 62. That is, the second terminal 802 is sandwiched between the resin casing 2 and the outer cylindrical portion 620 by the force during press-fitting. Therefore, the second terminal 802 is electrically connected to the second bearing housing member 62.
- the first bearing housing member 61 and the cover 3 are electrically insulated.
- the second bearing housing member 62 and the cover 3 are electrically insulated. That is, the cover 3 and the bearing housing members (61, 62) are electrically insulated. Therefore, the first bearing housing member 61 and the second bearing housing member 62 and the conductive member 8 are electrically insulated. That is, the bearings (51, 52) and the conductive member 8 are electrically insulated.
- the conductive member 8 electrically connects the first bearing housing member 61 and the second bearing housing member 62 in order to suppress electric corrosion of the bearing.
- the outer ring of the first bearing 51 and the outer ring of the second bearing 52 are electrically connected to each other, thereby reducing the potential difference between the inner ring and the outer ring of the first and second bearings.
- the occurrence of electrolytic corrosion of the bearings (51, 52) can be suppressed.
- the cover 3 of the motor A contacts the frame of the device.
- a frame of a general device is adjusted to a reference voltage determined in advance in the device, and the cover 3 is also adjusted to the reference voltage.
- the reference voltage may fluctuate due to the motor A provided in the device or the driving of a device different from the motor A. That is, the cover 3 is electrically insulated from the conductive member 8.
- Each of the bearing housing members (the first bearing housing member 61 and the second bearing housing member 62) is electrically connected by the conductive member 8.
- the outer ring of the first bearing 51 and the outer ring of the second bearing 52 also fluctuate, in other words. It becomes the same potential as the unstable reference voltage, and depending on the conditions, there is a possibility of causing the occurrence of bearing electrolytic corrosion.
- the cover 3 is insulated from the first bearing housing member 61 electrically connected to the outer ring of the first bearing 51 and the second bearing housing member 62 electrically connected to the outer ring of the second bearing 52.
- the first bearing 51 and the second bearing 52 can be rotated with high accuracy over a long period of time by suppressing the occurrence of electrolytic corrosion of the bearing. Thereby, the stable operation
- the motor A includes a bearing-side intrusion preventing member 71 and a shaft-side intrusion preventing member 72 for suppressing entry of foreign matter from the first bearing housing member 61.
- the bearing-side intrusion preventing member 71 covers the outer surface of the first bearing housing member 61. And it surrounds the outer side of the rotating shaft 40, and is extended to radial direction.
- the bearing-side intrusion preventing member 71 is made of, for example, a material such as rubber, and is in close contact with the first bearing housing member 61. Further, the bearing-side intrusion preventing member 71 is attached with a gap between the bearing 40 and the rotating shaft 40, that is, while maintaining non-contact.
- the shaft side intrusion prevention member 72 is disposed in the groove 400 provided in the rotating shaft 40. That is, a bearing cover 72 that covers the bearing housing 61 is attached to the output shaft 40. Thereby, the movement of the shaft side intrusion preventing member 72 in the axial direction is limited.
- the shaft-side intrusion preventing member 72 has a cylindrical shape extending along the axial direction.
- the bearing side intrusion prevention member 71 is disposed so as to surround the radially outer side. By reducing the space between the bearing side intrusion prevention member 71 and the shaft side intrusion prevention member 72, entry of foreign matter into the motor A is suppressed. That is, the bearing-side intrusion preventing member 71 and the shaft-side intrusion preventing member 72 are attached to the motor A at the same time, thereby suppressing the entry of foreign matter into the motor A.
- the casing contact portion 31 of the cover 3 is also provided in the recessed hole 21, but the shaft side intrusion preventing member 72 is fixed to the rotating shaft 40 in a non-contact state with the casing contact portion 31. That is, a part of the opening of the shaft side intrusion preventing member 72 is disposed in the recessed hole 21. And since the casing contact part 31 and the shaft side penetration
- a substrate Bd and a protective sheet Is are provided on the resin casing 2 on the second direction Or side of the stator 1.
- a control circuit (not shown) for controlling the timing of the current supplied to the plurality of windings 13, the magnitude of the current, and the like is mounted.
- the control circuit may be provided outside the motor A, and in that case, the substrate Bd may be omitted.
- the protective sheet Is is an insulating member disposed between the substrate Bd and the second bearing housing member 62. It is provided to prevent a short circuit between the second bearing housing member 62 and the substrate Bd. In the case of a motor that does not include the substrate Bd, the protective sheet Is may be omitted.
- the cover 3 is mainly made of a metal material and has a smaller linear expansion coefficient than the resin casing 2. Thereby, the difference of the deformation
- the resin casing 2 and the cover 3 are press-fitted in the press-fit portion 22 of the resin casing 2. Therefore, since the heat of the resin casing 2 is transmitted to the cover 3 and radiated, the thermal expansion of the resin casing 2 is suppressed in the press-fit portion 22.
- the insulator 12 is sealed with the resin casing 2 at a portion shifted in the axial direction from the press-fit portion 22.
- the insulator 12 is resin, and the linear expansion coefficient of the insulator 12 is larger than that of the stator core 11. Therefore, the portion of the resin casing 2 that does not overlap the stator core 11 in the radial direction is more deformed outwardly in the radial direction due to thermal expansion than the press-fit portion 22 that overlaps the stator core 11 in the radial direction.
- the heat dissipation is inferior to the press-fit portion 22. Therefore, problems such as distortion and displacement of the resin casing 2 due to a difference in deformation amount due to thermal expansion between the insulator 12 and the cover 3 occur.
- the motor A of the present embodiment by covering the resin casing 2 with the cover 3, the stator 1 and the rotor 4, the first bearing 51, the second bearing 52, and the like disposed inside are subjected to impacts acting from the outside. Protected from vibration. Further, the first bearing housing member 61 and the second bearing housing member 62 are electrically connected. The first bearing 51 and the second bearing 52 are electrically insulated from the first bearing housing member 61 and the second bearing housing member 62 and the cover 3 that may be in electrical contact with the external device. The influence of the fluctuation of the voltage of the external device (for example, the reference voltage of the grounding point) is hardly affected. Thereby, the electric corrosion of the first bearing 51 and the second bearing 52 due to voltage fluctuation can be suppressed. That is, in the motor A, the electrolytic corrosion of the first bearing 51 and the second bearing 52 can be suppressed regardless of the device to which the motor A is attached.
- FIG. 6 is a partial cross-sectional view showing a resin casing and a cover of a modified example of the motor according to the present embodiment.
- the motor A1 shown in FIG. 6 has the same configuration as the motor A shown in FIG. 2 except that the resin casing 2a1 and the cover 3a1 are different. Therefore, substantially the same parts are denoted by the same reference numerals, and detailed description of the same parts is omitted.
- the outer peripheral surface of the resin casing 2a1 gradually decreases in diameter toward the back side in the press-fitting direction, that is, toward the first direction Op side in FIG. That is, the outer peripheral surface of the resin casing 2a1 is an inclined surface (tapered surface) having a small diameter on the back side in the press-fitting direction.
- the cover 3a1 has a shape into which the resin casing 2a1 can be inserted.
- the cover 3a1 has a cylindrical shape and gradually becomes smaller in diameter toward at least the back side of the inner peripheral surface in the press-fitting direction, that is, the first direction Op side in FIG. That is, the inner diameter of the cover 3a1 gradually decreases toward the press-fitting direction of the resin casing 2a1.
- the insertion becomes easy.
- the press-fitting portion 221 is an inclined surface, the deformation amount of the resin casing 2a1 during press-fitting can be reduced. Thereby, generation
- groove 2011 extended in an axial direction along an inclined surface is formed in the outer peripheral surface of the resin casing 2a1.
- the lead wire portion 80 of the conductive member 8 is disposed in the groove 2011.
- FIG. 7 is a partial cross-sectional view showing a resin casing and a cover of another modified example of the motor according to the present embodiment.
- the motor A2 shown in FIG. 7 has the same configuration as the motor A shown in FIG. 2 except that the resin casing 2a2 and the cover 3a2 are different. Therefore, substantially the same parts are denoted by the same reference numerals, and detailed description of the same parts is omitted.
- the outer peripheral surface of the resin casing 2a2 gradually decreases in diameter toward the inner side in the press-fitting direction, that is, toward the first direction Op in FIG. That is, the outer peripheral surface of the resin casing 2a2 has a plurality of different outer shapes.
- inner side of a press injection direction is a small diameter, and a level
- the cover 3a2 has a shape into which the resin casing 2a2 can be inserted.
- the cover 3a2 has a cylindrical shape, and at least the back side in the press-fitting direction of the inner peripheral surface, that is, the first direction Op side in FIG. That is, the inner diameter of the cover 3a2 decreases stepwise toward the press-fitting direction of the resin casing 2a2.
- Insertion becomes easy by providing the shape of the resin casing 2a2 and the cover 3a2. Further, the step of the resin casing 2a2 and the step of the cover 3a2 can be brought into contact with each other so as to be positioned when the resin casing 2a2 is inserted into the cover 3a2. Further, the press-fitting portion 222 of the resin casing 2a2 comes into contact with the portion into which the cover 3a2 is press-fitted and press-fitting is started. Thereby, the force which acts by press fit can be reduced. The amount of deformation of the resin casing 2a2 during press fitting can be reduced. Thereby, generation
- each step groove 2012 is a continuous groove. Then, the lead wire portion 80 of the conductive member 8 is disposed in the groove 2012.
- FIG. 8 is an exploded perspective view of another example of the motor according to the present invention.
- FIG. 9 is a cross-sectional view of the motor shown in FIG.
- the motor B has the same configuration as the motor A of the first embodiment except that the resin casing 2b and the cover 3b are different. Therefore, regarding the configuration of the motor B, substantially the same parts as those of the motor A are denoted by the same reference numerals and detailed description thereof is omitted.
- the resin casing 2b includes a protruding portion 231 that protrudes radially outward from the recess 23, and a step portion 25 that extends radially outward from the outer peripheral surface.
- the outer peripheral surface of the resin casing 2 b is provided with a recess 23 that is recessed in the radial direction and continuous in the circumferential direction at the end on the first direction Op side.
- the protrusion part 231 protruded to the radial direction outer side is provided.
- the protruding portion 231 protrudes from the recess 23, but the radially outer curved surface coincides with the outer peripheral surface of the resin casing 2b.
- a part of the groove 201 in which the lead wire portion 80 of the conductive member 8 is disposed is formed in the protruding portion 231.
- the depth from the outer peripheral surface of the groove 201 can be made constant in the axial direction.
- the lead wire portion 80 is not easily displaced from the groove 201. That is, a part of the recess 23 has a protruding part 231 that protrudes in the radial direction, and the conductive member 8 is disposed on the protruding part 231.
- the lead wire portion 80 is easy to sag in the recess 23.
- the lead wire portion 80 is sandwiched between the press-fit portion 22 and the cover 3b when the resin casing 2b is press-fitted into the cover 3b.
- the lead wire portion 80 may be disconnected. That is, the first bearing housing member 61 and the second bearing housing member 62 may not be electrically connected.
- the cut end of the lead wire portion 80 may be short-circuited with the cover 3b, and the first bearing housing member 61 and the second bearing housing member 62 may be electrically connected to the cover 3b.
- a plurality of step portions 25 are provided in the resin casing 2b (here, four).
- the resin casing 2b is located in the same position in the axial direction, and is located in the circumferential direction at equal intervals.
- the cover 3b is provided with the contact part 311 which protruded outside from the outer peripheral surface.
- the contact portion 311 comes into contact with the step portion 25 when the resin casing 2b is press-fitted into the cover 3b.
- the contact portion 311 contacts the surface of the step portion 25 in the press-fitting direction (the first direction Op side in FIG. 9).
- the resin casing 2b is directly press-fitted into the outer cylinder portion 620 of the second bearing housing member 62.
- the lead wire part 80 is arrange
- the lead wire portion 80 extends to the end of the resin casing 2b on the second direction Or side, and is electrically connected to the outer cylinder portion 620 of the second bearing housing member 62 via the second terminal 802.
- the second terminal 802 is electrically connected to the lead wire portion 80, and is sandwiched between the outer cylinder portion 620 and the resin casing 2b that is press-fitted into the outer cylinder portion 620.
- This step portion 25 is a mounting convex portion for mounting the motor B to the device. Therefore, a fixing tool such as a screw penetrates the step portion 25. And the contact part 311 which contacts the step part 25 formed with the same member as the resin casing 2b is formed with the same member as the cover 3b whose strength is higher than that of the resin casing 2b. Thereby, the motor B can be firmly fixed. Further, even if vibration, impact, or the like acts, the motor B is difficult to drop off. Note that the number and position of the stepped portions 25 are not limited to those described above, and are changed depending on the shape and position of an attachment location (not shown) of the device to which the motor B is attached.
- the lead wire portion 80 of the conductive member 8 is not easily displaced by providing the protrusion 23 in the recess 23.
- the 1st bearing storage member 61 and the 2nd bearing storage member 62 can be electrically connected.
- the cover 3b is electrically insulated from the first bearing housing member 61 and the second bearing housing member 62, even if the step portion 25 and the contact portion 311 are fixed to the device to be mounted, The device is insulated from the first bearing housing member 61 and the second bearing housing member 62. Thereby, even if the voltage (for example, reference voltage) of the device to be attached fluctuates, the fluctuation of the voltage hardly affects the first bearing housing member 61 and the second bearing housing member 62.
- the electrolytic corrosion of the 1st bearing 51 and the 2nd bearing 52 can be suppressed. That is, in the motor B, the electrolytic corrosion of the first bearing 51 and the second bearing 52 can be suppressed regardless of the device to which the motor B is attached.
- FIG. 10 is a cross-sectional view of a modified example of the motor according to the second embodiment.
- the motor B1 shown in FIG. 10 includes a hole 202 formed inside and extending in the axial direction instead of the groove 201 formed on the outer peripheral surface of the resin casing 2b.
- the other parts have the same configuration as the motor B shown in FIGS. Therefore, in the configuration of the motor B1, substantially the same parts as those of the motor B are denoted by the same reference numerals and detailed description thereof is omitted.
- the motor B1 includes a hole 202 extending in the axial direction in the resin casing 2b.
- the conductive member 8 is disposed in the hole 202. Since the conductive member 8 is attached to the hole 202 formed inside the resin casing 2b having insulation properties, the lead wire portion 80 of the conductive member 8 is insulated from the cover 3 even if it is not covered with a coating. That is, the number of components of the conductive member 8 is reduced, or the number of members that can be selected as the conductive member 8 is increased. Thereby, the cost of the motor B1 can be kept low.
- the lead wire portion 80 is disposed in the hole 202 for comparison with the groove 201, but the present invention is not limited to this. For example, when the stator 1 and the first bearing housing member 61 are resin-molded to produce the resin casing 2b, the conductive member 8 may be inserted and molded together. By doing in this way, a manufacturing process can also be simplified.
- FIG. 11 is a cross-sectional view of still another example of the motor according to the present invention.
- the stator 1c and the resin casing 2c are different, but the other parts are the same as the motor A of the first embodiment. Therefore, in the configuration of the motor C, substantially the same parts as the motor A are denoted by the same reference numerals, and detailed description of the same parts is omitted.
- the stator 1c of the motor C has an insulator core back portion 122 at the end of the insulator 12 on the first direction Op side.
- the insulator core back part 122 is provided with the wiring part 120c by which the crossover part 131 is arrange
- the recessed part 23c is formed in the position which overlaps with the wiring part 120c of the resin casing 2c in an axial direction.
- a gap Gp is provided between the recess 23c and the cover 3c overlapping in the axial direction. That is, in the motor C, a gap is provided in part between the cover 3c and the resin casing 2c on one side of the insulator 12 in the axial direction.
- the gap Gp is located on one side in the axial direction (first direction Op side) of the wiring part 120c.
- the part of the recessed part 23c is the thin part 24c.
- the press-fit portion 22 of the resin casing 2c is provided on the outer peripheral surface. Therefore, when the resin casing 2c is press-fitted into the cover 3c, a force during press-fitting acts on the outer peripheral surface of the resin casing 2c.
- the recess 23c is provided at the end on the first direction Op side in the axial direction, so that the force during press-fitting is less likely to concentrate on the recess 23c. Thereby, the shift
- the lead wire portion 80 of the conductive member 8 is not easily displaced in the groove 201 formed on the outer peripheral surface of the resin casing 2c.
- the lead wire portion 80 is hardly sandwiched between the resin casing 2c and the cover 3c during press-fitting and is not easily disconnected or short-circuited with the cover 3c.
- production of the electrolytic corrosion of the 1st bearing 51 and the 2nd bearing 52 becomes high. That is, in the motor C, the electrolytic corrosion of the first bearing 51 and the second bearing 52 can be suppressed regardless of the device to which the motor C is attached.
- FIG. 12 is a cross-sectional view of still another example of the motor according to the present invention.
- the motor D of the present embodiment has the same configuration as the motor A of the first embodiment except that the cover is different. Therefore, in the configuration of the motor D, parts that are substantially the same as the configuration of the motor A are denoted by the same reference numerals, and detailed description of the same parts is omitted.
- the cover of the motor D includes a first cover member 3da and a second cover member 3db. That is, the cover covers the resin casing 2 from one side in the axial direction (first direction Op side) and the second cover covers the resin casing 2 from the other side in the axial direction (second direction Or side). Cover member 3db.
- the first direction Op of the resin casing 2 is press-fitted into the first cover member 3da.
- the second direction Or side of the resin casing 2 is inserted into the second cover member 3db.
- the resin casing 2 is press-fitted into the first cover member 3da on the first direction Op side, but is not limited thereto.
- the second direction Or side of the resin casing 2 may be press-fitted into the second cover member 3db. Moreover, both may be press-fitted. Which of the first cover member 3da and the second cover member 3db is to be press-fitted with the resin casing 2 is determined by the position of the press-fitting portion 22 of the resin casing 2.
- the first cover member 3da has a bottomed cylindrical shape in which at least a part of the end portion on the first direction Op side is closed.
- the first cover member 3da includes a first flange 32 that extends outward in the radial direction at an end portion on the second direction Or side. That is, the first cover member 3da has a first flange 32 that extends radially outward from the outer peripheral surface.
- the first flange 32 is a quadrangle (for example, a square) when viewed in the axial direction.
- the shape which can be attached to the attachment location of the apparatus (not shown) to which the motor D is attached is employ
- the second cover member 3db is a cylindrical member extending in the axial direction.
- the second cover member 3db includes a second flange 33 that extends radially outward at an end portion on the first direction Op side. That is, the second cover member 3db has a second flange 33 that extends radially outward from the outer peripheral surface.
- the second flange 33 is a quadrangle (for example, a square) when viewed in the axial direction.
- the second flange 33 has a shape overlapping the first flange 32 in the axial direction.
- the resin casing 2 penetrates the second cover member 3db from the first direction Op side to the second direction Or side. A portion of the resin casing 2 that protrudes in the axial direction from the end portion of the second cover member 3db on the second direction Or side is press-fitted into the outer cylindrical portion 620 of the second bearing housing member 62.
- the resin casing 2 is inserted into the first cover member 3da from the first direction Op side, and the press-fit portion 22 is press-fitted into the first cover member 3da.
- the first bearing housing member 61 passes through the cover hole 30 of the first cover member 3da. At this time, the first bearing housing member 61 and the edge of the cover hole 30 are not in contact with each other, that is, the first bearing housing member 61 and the first cover member 3da are electrically insulated.
- the second cover member 3db covers the outer peripheral surface of the resin casing 2. Then, by moving the second cover member 3db in the axial direction, the second flange 33 comes into contact with the first flange 32 of the first cover member 3da.
- the first flange 32 and the second flange 33 fix the first cover member 3da and the second cover member 3db to each other. Therefore, the first flange 32 and the second flange 33 are provided with screw fixing holes through which a fixing tool (here, a screw) passes. Then, the first cover member 3da and the second cover member 3db are fixed to each other by fixing the first flange 32 and the second flange 33 to each other. That is, when the first cover member 3da and the second cover member 3db cover the resin casing 2, the first flange 32 and the second flange 33 are connected directly or indirectly.
- a fixing tool here, a screw
- the resin casing 2 is press-fitted into the first cover member 3da, and the second cover member 3db is fixed to the first flange 32 of the first cover member 3da via the second flange 33. At this time, the end of the resin casing 2 on the second direction Or side protrudes from the second cover member 3db to the second direction Or side. An end portion of the resin casing 2 on the second direction Or side is press-fitted into the outer cylinder portion 620 of the second bearing housing member 62. At this time, the second terminal 802 is sandwiched between the outer cylinder portion 620 and the resin casing 2. Further, the outer cylinder portion 620 and the second cover member 3db are separated, that is, electrically insulated.
- the lead wire portion 80 of the conductive member 8 is less likely to be sandwiched between the first cover member 3da and the resin casing 2 by shortening the length of the press-fit portion 22 to be press-fitted. Thereby, it can suppress that the electrically-conductive member 8 disconnects or short-circuits with at least one of 1st cover member 3da and 2nd cover member 3db. Therefore, the first bearing 51 and the second bearing 52 are electrically connected to each other in a state in which the first bearing 51 and the second bearing 52 are insulated from a voltage (for example, a reference voltage) of an external device. Electric corrosion can be suppressed. That is, in the motor D, the electrolytic corrosion of the first bearing 51 and the second bearing 52 can be suppressed regardless of the device to which the motor D is attached.
- the first cover member 3da and the second cover member 3db are in direct contact. Then, the first cover member 3da and the energization member 8 are electrically insulated. Thereby, 2nd cover member 3db and the electricity supply member 8 are electrically insulated. Thereby, the cover (the first cover member 3da and the second cover member 3db) and the energizing member 8 are electrically insulated.
- FIG. 13 is a sectional view of still another example of the motor according to the present invention.
- the motor E of the present embodiment has the same configuration as the motor D of the fourth embodiment, except that the resin casing 2e, the first cover member 3ea, and the second cover member 3eb are different. Therefore, in the configuration of the motor E, substantially the same parts as those of the motor D are denoted by the same reference numerals, and detailed description of the same parts is omitted.
- the first bearing 51 is housed in the first bearing housing member 61 having the same configuration as the motor A.
- the resin casing 2e of the motor E includes a step portion 25e that protrudes radially outward from a portion closer to the second direction Or than the press-fit portion 22 on the outer peripheral surface.
- the step portion 25e has a similar shape and is provided for the same purpose, although the position in the axial direction is different from that of the step portion 25 provided in the motor B shown in FIGS. That is, four step portions 25e are provided in the resin casing 2e, and are arranged at equal intervals in the circumferential direction.
- the first bearing housing member 61 is fixed to the end of the resin casing 2e on the first direction Op side. The first bearing housing member 61 is fixed in the same manner as the resin casing 2 of the motor A, and details thereof are omitted.
- the first cover member 3ea has a bottomed cylindrical shape with the end on the first direction Op side closed. And the bottom part is provided with the casing contact part 31 and the electroconductive part 312 similarly to the cover 3. As shown in FIG.
- the first cover member 3ea includes a first flange 32 having the same configuration as the first cover member 3da.
- the second cover member 3eb is a cylindrical member extending in the axial direction.
- the second cover member 3eb and the second bearing housing member 62d are formed of the same member.
- the second bearing housing member 62d is formed continuously at the end of the second cover member 3eb on the second direction Or side.
- the second cover member 3eb includes a second flange 33e extending outward in the radial direction and an abutting portion 35e at the end on the first direction Op side.
- the second flange 33e is provided at a position in contact with the first flange 32 of the first cover member 3ea when the second cover member 3eb is covered from the second direction Or side of the resin casing 2e.
- the contact portion 35e is provided at a position where it comes into contact with the surface of the step portion 25e on the second direction Or side when the second cover member 3eb is covered from the second direction Or side of the resin casing 2e.
- the second flange 33e is provided closer to the first direction Op than the contact portion 35e. And the 2nd flange 33e and the contact part 35e are alternately arrange
- the first flange 32 comes into contact with the surface of the step portion 25e on the first direction Op side.
- the second cover member 3eb covers the second direction Or side of the resin casing 2e.
- the contact portion 35e of the second cover member 3eb is in contact with the end surface on the second direction Or side of the step portion 25e of the resin casing 2e, and the second flange 33e is in contact with the first flange 32.
- the resin casing 2e includes the step portion 25e, positioning in the axial direction during press-fitting into the first cover member 3ea is facilitated. Similarly, the axial positioning of the second cover member 3eb with respect to the resin casing 2e is facilitated.
- the outer diameter of the press-fit portion 22 may be reduced due to secular change of the resin constituting the resin casing 2e.
- the fixing of the resin casing 2e to the first cover member 2da by press fitting is weakened.
- the step portion 25e is fixed together with the first flange 32 and the contact portion 35e at the mounting position. Therefore, the movement of the resin casing 2e is restricted even if the fixation by press-fitting becomes weak. Thereby, even if it is long-term use, the capability fall of the motor E can be suppressed.
- the first flange 32 and the second flange 33e are in direct contact.
- the first cover member 3ea is electrically insulated from the first bearing housing member 61.
- the second cover member 3eb is electrically insulated from the second bearing housing member 62.
- the first bearing housing member 61 and the second bearing housing member 62 are electrically connected by the conductive member 8 that is electrically insulated from the first cover member 3ea and the second cover member 3eb.
- the first bearing housing member 61 and the second bearing housing member 62 are electrically conductive and electrically insulated from the first cover member 3ea and the second cover member 3eb.
- the present invention can be used as a motor for driving an air conditioner, a fan, or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
図1は、本発明にかかるモータの一例の分解斜視図である。図2は、図1に示すモータの断面図である。なお、以下の説明では、中心軸Axが延びる方向、すなわち、図2において左右方向を軸方向とする。また、軸方向に対して直交する方向を径方向とし、軸を中心とする円の接線方向を周方向とする。
図1に示すように、本実施形態にかかるモータAは、ステータ1と、樹脂ケーシング2と、カバー3と、ロータ4と、第1軸受51と、第2軸受52とを有する。樹脂ケーシング2は、ステータ1の外周面を覆う。すなわち、モータAは、ステータ1を樹脂ケーシング2で封止した、いわゆる、モールドモータである。ロータ4は、ステータ1の内側に配置される。ロータ4は、中心軸Axに沿って延びる回転軸40を備える。そして、回転軸40が、第1軸受51及び第2軸受52に支持されており、ステータ1に対して回転可能である。すなわち、本実施形態にかかるモータAは、ステータ1の内側でロータ4が回転するインナーロータ型DCブラシレスモータである。そして、複数の軸受(51、52)は、軸方向に互いに離間した位置で回転軸40を回転可能に支持する。
ステータ1について、新たな図面を参照して説明する。図3は、ステータコアの斜視図である。図4は、ステータに備えられるステータコアの斜視図である。図3、図4に示すように、ステータ1は、ステータコア11と、絶縁体12と、巻線13とを備える。そして、ステータ1は、ロータ4の外周面と径方向に対向するステータコア11に絶縁体12を介して巻きつけられた複数の巻線13を有する。また、図2に示すように、ステータ1は、第1軸受51が収納される第1軸受収納部材61と、第2軸受52が収納される第2軸受収納部材62とを備える。すなわち、ステータ1は、複数の軸受(51、52)がそれぞれ収納される複数の軸受収納部材(61、62)を備える。
図1、図2等に示すように、樹脂ケーシング2は、円筒形状である。樹脂ケーシング2は、内部にステータコア11を封止した樹脂のモールド成型体である。すなわち、樹脂ケーシング2は、ステータ1の少なくとも絶縁体13及び巻線12を封止する。なお、図2に示すように、モータAでは、ステータコア11の径方向の外面も覆う。樹脂ケーシング2は、第1方向Op側の端部の少なくとも一部が閉じられた有底円筒形状である。そして、底部の径方向中央部分に軸方向に延びる樹脂ケーシング孔20が設けられる。
図5は、ロータの斜視図である。図5に示すように、ロータ4は、ロータコア41と、複数個のマグネット42と、モールド部43とを備える。ロータコア41は、軸方向に延びる筒形状部材411と、筒形状の部材の径方向内側に配される軸支持部材412とを備える。筒状部材411と軸支持部材412とは、樹脂のモールド成形体であるモールド部43で相互に固定される。ロータコア41は、磁性体である。ロータコア41は、磁性板を径方向に積層した積層体であってもよいし、例えば、紛体を焼結して同一の部材として形成した成形体であってもよい。
回転軸40は、軸方向に離れた2箇所で第1軸受51及び第2軸受52に圧入される。すなわち、回転軸40は、第1軸受51及び第2軸受52によって、軸方向に異なる2箇所で、回転可能に支持される。第2軸受52の内輪には、回転軸40の第2方向Or側の端部が圧入される。第1軸受51の内輪には、回転軸40の第2軸受52に圧入される部分よりも第1方向Op側の部分が圧入される。
第1軸受収納部材61および第2軸受収納部材62は、ここでは、鉄、真鍮等の金属製である。すなわち、軸受収納部材(61、62)は、導電性を有する。
第1軸受収納部材61は、内部に第1軸受51が収納可能な筒形状を有する。第1軸受収納部材61の軸方向一方側の端部は、径方向中心部分に軸方向に貫通する端面部610を備える。また、第1軸受収納部材61の軸方向他方側の端部は、径方向外側に延びるフランジ部611を備える。フランジ部611の少なくとも一部が、樹脂ケーシング2にインサート成形される。なお、フランジ部611には、軸方向に貫通する貫通部分が設けられていてもよい。インサート成形時に貫通部分に樹脂が充填されることで、第1軸受収納部材61の周方向の移動が制限され、回り止めとなる。
図2に示すように、第2軸受収納部材62は、第2軸受52を保持する。第2軸受収納部材62は、収納部621と、外筒部620とを有する。収納部621は、筒形状であり、内部に第2軸受52を収納する。収納部621の内部に第2軸受52の外輪が圧入される。
図2に示すように、モータAでは、カバー3の第2方向Or側が、第2軸受収納部材62の外筒部620に圧入される。そのため、外筒部620とカバー圧入部300の隙間からの水、埃、塵等の異物の進入が抑制される。一方で、モータAの第1方向Op側は、回転軸40が第1軸受収納部61の端面部610に軸受収納部孔を備える。この軸受収納部孔は、回転軸40の回転を邪魔しないために、回転軸40との間に隙間が形成される大きさである。このすきまから、水、塵、埃等の異物がモータAの内部に浸入しやすい。そこで、モータAには、第1軸受収納部材61からの異物の進入を抑制するための軸受側侵入防止部材71およびシャフト側侵入防止部材72を備える。
以上示したモータAの動作について説明する。モータAの駆動時において、巻線13には、電流が供給される。このとき、電流によって巻線13が発熱する。このとき、巻線13と共にステータコア11も加熱される。ステータコア11及び巻線13は、樹脂ケーシング2に覆われる。ステータコア11及び巻線の熱は、樹脂ケーシング2に伝達される。
<1.10.1 変形例1>
本実施形態に示すモータの変形例について図面を参照して説明する。図6は、本実施形態にかかるモータの変形例の樹脂ケーシング及びカバーを示す部分断面図である。図6に示すモータA1は、樹脂ケーシング2a1及びカバー3a1が異なる以外、図2に示す、モータAと同じ構成を有する。そのため、実質上同じ部分には、同じ符号を付すとともに、同じ部分の詳細な説明は省略する。
本実施形態に示すモータの変形例について図面を参照して説明する。図7は、本実施形態にかかるモータの他の変形例の樹脂ケーシング及びカバーを示す部分断面図である。図7に示すモータA2は、樹脂ケーシング2a2及びカバー3a2が異なる以外、図2に示す、モータAと同じ構成を有する。そのため、実質上同じ部分には、同じ符号を付すとともに、同じ部分の詳細な説明は省略する。
本発明にかかるモータの他の例について図面を参照して説明する。図8は、本発明にかかるモータの他の例の分解斜視図である。図9は、図8に示すモータの断面図である。図8及び図9に示すように、モータBは樹脂ケーシング2b及びカバー3bが異なる以外、第1実施形態のモータAと同じ構成を有する。そのため、モータBの構成に関して、モータAと実質的に同じ部分には、同じ符号を付すとともに、詳細な説明を省略する。
本実施形態にかかるモータの変形例について、図面を参照して説明する。図10は、第2実施形態にかかるモータの変形例の断面図である。図10に示すモータB1は、樹脂ケーシング2bの外周面に形成された溝201に替えて、内部に形成され軸方向に延びる孔202を備える。これ以外の部分は、図8、図9に示すモータBと同じ構成を有する。そのため、モータB1の構成において、モータBと実質上同じ部分には、同じ符号を付すとともに、詳細な説明は省略する。
図11は、本発明にかかるモータのさらに他の例の断面図である。図11に示すモータCでは、ステータ1c及び樹脂ケーシング2cが異なるが、それ以外の部分については、第1実施形態のモータAと同じである。そのため、モータCの構成において、モータAと実質上同じ部分には、同じ符号を付すとともに、同じ部分の詳細な説明を省略する。
本発明にかかるさらに他の例について図面を参照して説明する。図12は、本発明にかかるモータのさらに他の例の断面図である。本実施形態のモータDでは、カバーが異なる以外、第1実施形態のモータAと同じ構成を有する。そのため、モータDの構成において、モータAの構成と実質上同じ部分には、同じ符号を付し、同じ部分の詳細な説明は省略する。
図12に示すように、モータDのカバーは、第1カバー部材3daと、第2カバー部材3dbとを備える。すなわち、カバーは、軸方向における一方側(第1方向Op側)から樹脂ケーシング2を覆う第1カバー部材3daと、軸方向における他方側(第2方向Or側)から樹脂ケーシング2を覆う第2カバー部材3dbと、を備える。第1カバー部材3daには、樹脂ケーシング2の第1方向Op側が圧入される。また、第2カバー部材3dbには、樹脂ケーシング2の第2方向Or側が挿入される。なお、本実施形態のモータDにおいて、樹脂ケーシング2は、第1方向Op側が、第1カバー部材3daに圧入されるがこれに限定されない。例えば、樹脂ケーシング2の第2方向Or側が、第2カバー部材3dbに圧入されてもよい。また、両方が圧入されてもよい。第1カバー部材3da及び第2カバー部材3dbのいずれのカバー部材に樹脂ケーシング2が圧入されるかは、樹脂ケーシング2の圧入部22の位置によって決定される。
図12に示すように、第1カバー部材3daは、第1方向Op側の端部の少なくとも一部が閉じられた有底円筒形状である。そして、第1カバー部材3daは、第2方向Or側の端部に、径方向外側に延びる第1フランジ32を備える。すなわち、第1カバー部材3daは、外周面から径方向外側に延びる第1フランジ32を有する。第1フランジ32は、軸方向に見て四角形(例えば、正方形)である。なお、第1フランジ32は、モータDが取り付けられる装置(不図示)の取り付け箇所に取り付け可能な形状が採用される。
図12に示すように、第2カバー部材3dbは軸方向に延びる筒状の部材である。第2カバー部材3dbは、第1方向Op側の端部に、径方向外側に延びる第2フランジ33を備える。すなわち、第2カバー部材3dbは、外周面から径方向外側に延びる第2フランジ33を有する。第2フランジ33は、軸方向に見て四角形(例えば、正方形)である。第2フランジ33は、第1フランジ32と軸方向に重なる形状を有する。
樹脂ケーシング2は、溝201に導電部材8を配置した後、第1方向Op側から第1カバー部材3daに挿入され、圧入部22が第1カバー部材3daに圧入される。第1軸受収納部材61は、第1カバー部材3daのカバー孔30を貫通する。このとき、第1軸受収納部材61とカバー孔30の辺縁部とは非接触である、つまり、第1軸受収納部材61と第1カバー部材3daとは、電気的に絶縁である。
本発明にかかるさらに他の例について図面を参照して説明する。図13、本発明にかかるモータのさらに他の例の断面図である。本実施形態のモータEでは、樹脂ケーシング2e、第1カバー部材3ea及び第2カバー部材3ebが異なる以外、第4実施形態のモータDと同じ構成を有する。そのため、モータEの構成において、モータDの構成と実質上同じ部分には、同じ符号を付し、同じ部分の詳細な説明は省略する。また、モータEでは、第1軸受51を、モータAと同様の構成の第1軸受収納部材61に収納する。
Claims (13)
- 中心軸に沿って延びる回転軸を有するロータと、
前記ロータの外周面と径方向に対向するステータコアに絶縁体を介して巻き回された複数の巻線を有するステータと、
前記ステータの少なくとも前記絶縁体及び前記巻線を封止する樹脂ケーシングと、
中心軸方向に互いに離間した位置で前記回転軸を回転可能に支持する複数の軸受と、
前記樹脂ケーシングを覆うカバーと、を備え、
前記ステータは、前記複数の軸受がそれぞれ収納される複数の軸受収納部材を備え、
前記軸受収納部材は、導電性を有し、
前記軸受収納部材のそれぞれは、導電部材により電気的に導通され、
前記複数の軸受収納部材のそれぞれは、前記カバーと電気的に絶縁され、
前記カバーは、前記導電部材と電気的に絶縁されるモータ。 - 前記カバーは、前記絶縁体の径方向外方又は軸方向一方側の少なくとも一方において、樹脂ケーシングを覆い、
前記絶縁体の径方向外方又は軸方向一方側の少なくとも一方において、少なくとも一部に前記カバーと前記樹脂ケーシングとの間に隙間を備えた請求項1記載のモータ。 - 前記複数の巻線は、渡り線部を介して電気的に接続され、
前記絶縁体は、前記渡り線部が配線される配線部が設けられ、
前記隙間は、前記配線部の径方向外方又は軸方向一方側の少なくとも一方に位置した請求項2記載のモータ。 - 前記樹脂ケーシングの外周面は、前記間隙と接する部分に凹部を備える請求項1又は請求項2に記載のモータ。
- 前記ステータコアは、
環状のコアバック部と、
前記コアバック部から径方向内側に延びるティース部と、を有し、
前記絶縁体は、
前記ティース部を覆う絶縁体ティース部と、
前記コアバック部の少なくとも軸方向端部を覆う絶縁体コアバック部と、を有し、
前記配線部は、前記絶縁体コアバック部の軸方向端部から軸方向に向かって延び、
前記渡り線は、前記配線部の径方向外側面で配線され、
前記樹脂ケーシングの外周面に前記凹部が位置する請求項4に記載のモータ。 - 前記凹部の一部分において径方向に突出した突出部を有し、
前記導電部材が前記突出部に配置される請求項4又は請求項5に記載のモータ。 - 前記複数の軸受収納部材のうち少なくとも一つは、前記樹脂ケーシングによって封止される樹脂封止軸受収納部材であり、
前記樹脂封止軸受収納部材は、径方向に延びるフランジ部を備え、
前記フランジ部の一部は、前記樹脂ケーシングに封止され、
前記カバーは、前記樹脂ケーシングと接触し、軸方向から視た位置が前記フランジ部と重なるケーシング接触部を備え、
前記導電部材は、前記フランジ部に対して電気的に導通する導電接続部を有し、
前記ケーシング接触部は、軸方向に貫通する貫通部を備え、
前記導電接続部は、前記貫通部に位置する請求項1から請求項6のいずれかに記載のモータ。 - 前記樹脂ケーシング部の出力軸側端面は、軸方向に凹む凹穴を備え、
前記ケーシング接触部は、前記凹穴に沿って接触し、
前記出力軸には、前記軸受収納部を覆う軸受カバーが取り付けられる請求項7に記載のモータ。 - 前記カバーは軸方向に延びる筒状であり、
前記樹脂ケーシングは、前記カバーの内部で圧入される圧入部を備えた請求項1から請求項8のいずれかに記載のモータ。 - 前記圧入部は、前記樹脂ケーシングを径方向に見て、前記ステータコアと重なる請求項9に記載のモータ。
- 前記カバーの内径は、前記樹脂ケーシングの圧入方向に向かって漸次的に小さくなる請求項9又は請求項10に記載のモータ。
- 前記カバーの内径は、前記樹脂ケーシングの圧入方向に向かって段階的に小さくなる請求項9又は請求項10に記載のモータ。
- 前記カバーは、
軸方向における一方側から前記樹脂ケーシングを覆う第1カバー部材と、
軸方向における他方側から前記樹脂ケーシングを覆う第2カバー部材と、を備え、
前記第1カバー部材は、外周面から径方向外側に延びる第1フランジを有し、
前記第2カバー部材は、外周面から径方向外側に延びる第2フランジを有し、
前記第1カバー部材及び前記第2カバー部材は、前記樹脂ケーシングを覆ったとき、前記第1フランジと前記第2フランジと直接的又は間接的に接続される請求項1から請求項12のいずれかに記載のモータ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201880022890.2A CN110476334B (zh) | 2017-03-31 | 2018-02-02 | 马达 |
JP2019508675A JP7102661B2 (ja) | 2017-03-31 | 2018-02-02 | モータ |
KR1020197025954A KR20190109543A (ko) | 2017-03-31 | 2018-02-02 | 모터 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017072719 | 2017-03-31 | ||
JP2017-072719 | 2017-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018179833A1 true WO2018179833A1 (ja) | 2018-10-04 |
Family
ID=63674567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/003657 WO2018179833A1 (ja) | 2017-03-31 | 2018-02-02 | モータ |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP7102661B2 (ja) |
KR (1) | KR20190109543A (ja) |
CN (1) | CN110476334B (ja) |
WO (1) | WO2018179833A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020061830A (ja) * | 2018-10-05 | 2020-04-16 | 株式会社マキタ | 電動作業機 |
KR20210073602A (ko) * | 2019-06-28 | 2021-06-18 | 광둥 미디어 화이트 홈 어플라이언스 테크놀로지 이노베이션 센터 컴퍼니 리미티드 | 직류 브러시리스 모터 |
CN113424409A (zh) * | 2019-03-28 | 2021-09-21 | 日本电产株式会社 | 马达 |
WO2021200052A1 (ja) * | 2020-03-31 | 2021-10-07 | 日本電産株式会社 | モータ |
CN113572297A (zh) * | 2020-04-29 | 2021-10-29 | Lg电子株式会社 | 马达组装体及具有该马达组装体的吹风机 |
EP4002651A4 (en) * | 2019-07-17 | 2022-08-31 | Panasonic Intellectual Property Management Co., Ltd. | CAST ENGINE |
US20220316560A1 (en) * | 2021-03-31 | 2022-10-06 | Mikuni Corporation | Rotation driving device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070178323A1 (en) * | 2004-05-31 | 2007-08-02 | Kaneka Corporation | Polyimide multilayer body and method for producing same |
TW202229083A (zh) * | 2019-12-27 | 2022-08-01 | 日商島野股份有限公司 | 人力驅動車用之罩 |
JP6978711B1 (ja) * | 2020-09-09 | 2021-12-08 | ダイキン工業株式会社 | 樹脂モールドステータ、アウターロータ型モータ、送風装置、空気調和装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012182931A (ja) * | 2011-03-02 | 2012-09-20 | Daikin Ind Ltd | 電動機 |
JP2014132818A (ja) * | 2012-12-07 | 2014-07-17 | Nidec Techno Motor Corp | モータ |
JP2016149861A (ja) * | 2015-02-12 | 2016-08-18 | 日立アプライアンス株式会社 | 電動機及びこの電動機を使用した洗濯機 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0233586U (ja) * | 1988-08-25 | 1990-03-02 | ||
JPH09261935A (ja) | 1996-03-19 | 1997-10-03 | Shibaura Eng Works Co Ltd | ブラシレスdcモータ |
JP2000188841A (ja) * | 1998-12-21 | 2000-07-04 | Matsushita Electric Ind Co Ltd | Dcブラシレスモ−タ |
JP2004147467A (ja) * | 2002-10-28 | 2004-05-20 | Aichi Electric Co Ltd | 電動機 |
US20070290560A1 (en) * | 2004-11-04 | 2007-12-20 | Matsushita Electric Industrial Co., Ltd. | Motor and Electric Apparatus Using the Same Motor |
JP4527602B2 (ja) * | 2005-05-30 | 2010-08-18 | 日立オートモティブシステムズ株式会社 | ステータコイルの製造方法 |
JP4718260B2 (ja) * | 2005-07-08 | 2011-07-06 | 日本電産テクノモータホールディングス株式会社 | モールドモータ |
US20070152523A1 (en) * | 2005-12-12 | 2007-07-05 | Franklin Electric Co., Inc. | Submersible Motor with molded encapsulated stator |
JP2009112065A (ja) * | 2007-10-26 | 2009-05-21 | Panasonic Corp | モールドモータ |
JP5257603B2 (ja) * | 2008-12-12 | 2013-08-07 | 株式会社安川電機 | 電動機 |
JP5408423B2 (ja) * | 2009-09-18 | 2014-02-05 | 株式会社富士通ゼネラル | モールドモータ |
JP2011114922A (ja) * | 2009-11-26 | 2011-06-09 | Panasonic Corp | Dcブラシレスモ−タ及びそれを用いた空気調和機 |
CN202513796U (zh) * | 2011-03-17 | 2012-10-31 | 松下电器产业株式会社 | 无刷电动机和具备它的电气设备 |
JP5741126B2 (ja) | 2011-03-30 | 2015-07-01 | 株式会社富士通ゼネラル | モールドモーター |
JP2013207896A (ja) * | 2012-03-28 | 2013-10-07 | Fujitsu General Ltd | モータ搭載機器 |
JP6079253B2 (ja) * | 2013-01-18 | 2017-02-15 | コベルコ建機株式会社 | 電動機 |
JP2015006072A (ja) * | 2013-06-21 | 2015-01-08 | パナソニックIpマネジメント株式会社 | 回転電機、回転負荷結合体及び回転負荷結合体を具備する空気調和機 |
CN203747580U (zh) * | 2014-03-14 | 2014-07-30 | 日本电产高科电机株式会社 | 马达及包含该马达的电器设备 |
CN104578603A (zh) * | 2015-01-05 | 2015-04-29 | 江苏富天江电子电器有限公司 | 一种具有降低静电腐蚀结构的直流无刷电机 |
-
2018
- 2018-02-02 CN CN201880022890.2A patent/CN110476334B/zh active Active
- 2018-02-02 KR KR1020197025954A patent/KR20190109543A/ko not_active Application Discontinuation
- 2018-02-02 WO PCT/JP2018/003657 patent/WO2018179833A1/ja active Application Filing
- 2018-02-02 JP JP2019508675A patent/JP7102661B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012182931A (ja) * | 2011-03-02 | 2012-09-20 | Daikin Ind Ltd | 電動機 |
JP2014132818A (ja) * | 2012-12-07 | 2014-07-17 | Nidec Techno Motor Corp | モータ |
JP2016149861A (ja) * | 2015-02-12 | 2016-08-18 | 日立アプライアンス株式会社 | 電動機及びこの電動機を使用した洗濯機 |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7179569B2 (ja) | 2018-10-05 | 2022-11-29 | 株式会社マキタ | 電動園芸工具 |
US11863047B2 (en) | 2018-10-05 | 2024-01-02 | Makita Corporation | Electric work machine |
JP2020061830A (ja) * | 2018-10-05 | 2020-04-16 | 株式会社マキタ | 電動作業機 |
US11646629B2 (en) | 2018-10-05 | 2023-05-09 | Makita Corporation | Electric work machine |
CN113424409A (zh) * | 2019-03-28 | 2021-09-21 | 日本电产株式会社 | 马达 |
KR20210073602A (ko) * | 2019-06-28 | 2021-06-18 | 광둥 미디어 화이트 홈 어플라이언스 테크놀로지 이노베이션 센터 컴퍼니 리미티드 | 직류 브러시리스 모터 |
KR102565400B1 (ko) * | 2019-06-28 | 2023-08-08 | 광둥 미디어 화이트 홈 어플라이언스 테크놀로지 이노베이션 센터 컴퍼니 리미티드 | 직류 브러시리스 모터 |
JP2022515772A (ja) * | 2019-06-28 | 2022-02-22 | ▲広▼▲東▼美的白色家▲電▼技▲術▼▲創▼新中心有限公司 | ブラシレス直流モータ |
JP7160502B2 (ja) | 2019-06-28 | 2022-10-25 | ▲広▼▲東▼美的白色家▲電▼技▲術▼▲創▼新中心有限公司 | ブラシレス直流モータ |
EP4002651A4 (en) * | 2019-07-17 | 2022-08-31 | Panasonic Intellectual Property Management Co., Ltd. | CAST ENGINE |
WO2021200052A1 (ja) * | 2020-03-31 | 2021-10-07 | 日本電産株式会社 | モータ |
CN113572297A (zh) * | 2020-04-29 | 2021-10-29 | Lg电子株式会社 | 马达组装体及具有该马达组装体的吹风机 |
CN113572297B (zh) * | 2020-04-29 | 2023-10-20 | Lg电子株式会社 | 马达组装体及具有该马达组装体的吹风机 |
US11624424B2 (en) * | 2021-03-31 | 2023-04-11 | Mikuni Corporation | Rotation driving device |
US20220316560A1 (en) * | 2021-03-31 | 2022-10-06 | Mikuni Corporation | Rotation driving device |
Also Published As
Publication number | Publication date |
---|---|
CN110476334A (zh) | 2019-11-19 |
JP7102661B2 (ja) | 2022-07-20 |
KR20190109543A (ko) | 2019-09-25 |
JPWO2018179833A1 (ja) | 2020-02-06 |
CN110476334B (zh) | 2021-07-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018179833A1 (ja) | モータ | |
WO2018179831A1 (ja) | モータ | |
JP6789396B2 (ja) | 回転子、電動機、送風機、空気調和装置および回転子の製造方法 | |
US11258330B2 (en) | Rotating electrical device | |
WO2017033917A1 (ja) | モータ | |
US10079519B2 (en) | Motor | |
JP5901853B1 (ja) | 回転電機の回転子および回転電機 | |
US10622855B2 (en) | Permanent magnet electric motor | |
KR101562736B1 (ko) | 브러쉬리스 dc 모터의 접지 구조 | |
JPWO2014103056A1 (ja) | 電動機、ポンプ、および電動機の製造方法 | |
WO2018179832A1 (ja) | モータ | |
JP2004254398A (ja) | モールドモータ | |
WO2018179830A1 (ja) | モータ | |
JP2021052493A (ja) | モータおよびモータの組立方法 | |
JP7361813B2 (ja) | 回転電機 | |
JP7092477B2 (ja) | 回転電機ステータ | |
CN209860692U (zh) | 电动机 | |
CN110661350B (zh) | 马达 | |
US20220106948A1 (en) | Pump comprising an electric motor with plug connection in the form of an intermediate ring | |
JP4038459B2 (ja) | 回転電機の固定子 | |
WO2014103905A1 (ja) | スタータモータ | |
JP2005027382A (ja) | 回転電機におけるブラケットのヨーク取付け構造 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18776325 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2019508675 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20197025954 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 18776325 Country of ref document: EP Kind code of ref document: A1 |