Molded motor

Abstract

The molded motor includes: a stator; a rotor having a rotating shaft and rotating under the magnetic force of the stator; a molding resin covering at least a portion of the stator; vibration-damping rubber mounted on an object on which the molded motor is mounted; and a rigid member disposed around the vibration-damping rubber and being harder than the vibration-damping rubber, wherein the vibration-damping rubber and the rigid member are fixed to the molding resin by integral molding.

Description

Technical Field

[0001] This disclosure relates to a molded motor. Background Technology

[0002] Motors are used in a wide variety of devices, primarily household electrical appliances. For example, motors are used in fan motors mounted on the outdoor units of air conditioners. A fan motor consists of a motor with a stator and a rotor, and a rotating fan mounted on the motor's rotating shaft.

[0003] The fan motor used in the outdoor unit of the air conditioner is installed in the main body of the outdoor unit (the object to be installed). In this case, the fan motor is mounted to the main body of the outdoor unit through vibration-damping rubber so that the vibration generated by the fan motor is not transmitted to the outside (see Patent Documents 1 and 2). As a result, the transmission of fan motor vibration to the main body of the outdoor unit can be suppressed, thus achieving quiet operation.

[0004] As a fan motor, a molded motor is used where the stator is covered with molding resin. A molded motor includes, for example, a stator, a rotor disposed inside the stator, and molding resin covering the stator from the outside. In the molded motor, the molding resin forms the outer contour of the motor.

[0005] When you want to mount a molded motor to an object with vibration damping rubber in between, you install the vibration damping rubber on the legs that protrude outward from the side of the molded resin, and then fix the vibration damping rubber and the object with screws or the like. For example, when you want to mount a fan motor with a molded motor to the main body of an outdoor unit, you can mount the fan motor to the main body of the outdoor unit by fixing the vibration damping rubber mounted on the legs of the molded motor to the main body of the outdoor unit with screws.

[0006] In this case, after the stator molding is completed by covering the stator with molding resin, vibration damping rubber is installed on the legs of the molding resin. That is, the vibration damping rubber is then installed on the molding resin.

[0007] However, in recent years, given the increasing strength of typhoons and the occurrence of earthquakes, there is a potential risk that the molded motor, which is mounted on the object with vibration-damping rubber, may detach from the object. In particular, with the increasing frequency of powerful typhoons that occur only once every few decades, there is a strong demand to prevent the fan motor, which is mounted on the molding resin with vibration-damping rubber, from detaching from the main body of the outdoor unit.

[0008] Existing technical documents

[0009] Patent documents

[0010] Patent Document 1: Japanese Patent Application Publication No. 6-307661

[0011] Patent Document 2: Japanese Patent Application Publication No. 2017-67154 Summary of the Invention

[0012] This disclosure was made to solve such a problem. The purpose of this disclosure is to provide a molding motor that can prevent the molding motor from falling off the object even when vibration-damping rubber is used to mount the molding motor to the object for noise reduction.

[0013] To achieve the above objectives, a technical solution for a molded motor disclosed herein includes: a stator; a rotor having a rotating shaft and rotating under the magnetic force of the stator; a molding resin covering at least a portion of the stator; an elastomer mounted on an object on which the molded motor is mounted; and a rigid member disposed around the elastomer, being at least one and harder than the elastomer, wherein the elastomer and the rigid member are fixed to the molding resin by integral molding.

[0014] Preferably, the molding resin has a protrusion that protrudes outward in a radial direction orthogonal to the axial direction of the rotation axis, and the elastomer and the rigid member are disposed on the protrusion.

[0015] Preferably, the molded motor includes a cylindrical member as the rigid member, the cylindrical member being disposed on the outside of the elastomer in a manner that surrounds the elastomer.

[0016] Alternatively, a portion of the cylindrical member may be embedded in the elastomer.

[0017] Alternatively, the molded motor may have a first cylindrical member and a second cylindrical member as the rigid member, the first cylindrical member being disposed on the outside of the elastomer in a manner that surrounds the elastomer, and the second cylindrical member being disposed on the inside of the elastomer.

[0018] Alternatively, at least a portion of the first cylindrical member and the second cylindrical member may be embedded in the elastomer.

[0019] Preferably, the rigid component is made of a metallic material.

[0020] Alternatively, the molding resin may be composed of unsaturated polyester resin.

[0021] Alternatively, the elastomer may have a through hole for a fixing member to pass through in order to mount the molded motor onto the object.

[0022] Preferably, the elastomer is a vibration-damping rubber that suppresses the transmission of vibrations generated by the molding motor to the object being placed.

[0023] Preferably, the vibration-damping rubber is made of ethylene propylene rubber or nitrile rubber.

[0024] According to this disclosure, even if an elastomer is used to mount the molding motor onto the object being mounted, it is possible to prevent the molding motor from detaching from the object being mounted. Attached Figure Description

[0025] Figure 1 This is a perspective view of the molded motor of the embodiment when viewed from an obliquely upward angle.

[0026] Figure 2 This is a perspective view of the molded motor of the implementation method viewed from a slightly lower angle.

[0027] Figure 3 This is a top view of the molded motor in the embodiment.

[0028] Figure 4 This is a cross-sectional view of the molded motor according to the embodiment.

[0029] Figure 5 It is by Figure 4 An enlarged view of the region V enclosed by the dashed line.

[0030] Figure 6 This is a perspective view of the mounting components of the molded motor according to the embodiment.

[0031] Figure 7A This is a top view of the mounting components of the embodiment.

[0032] Figure 7B It is along Figure 7A A sectional view of line VIIB-VIIB.

[0033] Figure 8 This is a flowchart of a method for manufacturing a molded motor according to an embodiment.

[0034] Figure 9A This is an enlarged view of the protruding part of the molding resin of the completed molding motor.

[0035] Figure 9B By along Figure 9A The diagram shows the cross-section of the IXB-IXB line when molding resin using a mold.

[0036] Figure 10 It is a three-dimensional diagram showing the structure of a conventional molded motor.

[0037] Figure 11 This is a flowchart of a traditional method for manufacturing molded motors.

[0038] Figure 12A This is a top view of the mounting component of variant example 1.

[0039] Figure 12B It is along Figure 12A A cross-sectional view of the XIIB-XIIB line.

[0040] Figure 13A This is a top view of the mounting component in variation example 2.

[0041] Figure 13B It is along Figure 13A A sectional view of line XIIIB-XIIIB.

[0042] Figure 14A This is a top view of the mounting component of variant example 3.

[0043] Figure 14B It is along Figure 14A A cross-sectional view of the XIVB-XIVB line.

[0044] Figure 15A This is a top view of the mounting component in variation 4.

[0045] Figure 15B It is along Figure 15A A cross-sectional view of the XVB-XVB line. Detailed Implementation

[0046] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, the embodiments described below represent specific examples of this disclosure. Therefore, the numerical values, structural elements, arrangement and connection patterns of structural elements, processes, and sequence of processes shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Therefore, structural elements in the following embodiments that are not described in the independent claims representing the highest-level concept of this disclosure will be described as arbitrary structural elements.

[0047] Furthermore, the accompanying drawings are schematic diagrams and may not be strictly accurate. Additionally, in the accompanying drawings, substantially identical structures are labeled with the same reference numerals, and repetitive descriptions are omitted or simplified. Moreover, in this specification, terms such as "up" and "down" do not necessarily refer to absolute spatial directions of upward (vertical above) and downward (vertical below).

[0048] (Implementation Method)

[0049] First, use Figures 1-5 The overall structure of the molded motor 1 in the embodiment is explained. Figure 1 This is a perspective view of the molded motor 1 of the embodiment viewed from an obliquely upward angle. Figure 2 This is a perspective view of the molded motor 1 viewed from a slightly lower angle. Figure 3 This is a top view of the molded motor 1. Figure 4This is a cross-sectional view of the molded motor 1. Figure 5 It is by Figure 4 An enlarged view of the region V enclosed by the dashed line.

[0050] like Figures 1-4 As shown, the molded motor 1 includes a stator 10, a rotor 20, molding resin 30, and a mounting member 40. The rotor 20 rotates under the magnetic force of the stator 10. The molding resin 30 covers at least a portion of the stator 10. The mounting member 40 is a member for mounting the molded motor 1 on a mounting object. The molded motor 1 is mounted on the mounting object (mounted object) by means of the mounting member 40.

[0051] The molded motor 1 also includes a first bearing 51 and a second bearing 52, a first bracket 61 and a second bracket 62. In addition, in the molded motor 1, the molding resin 30 and the second bracket 62 form the outline of the molded motor 1.

[0052] Molded motor 1 is a brushless motor that does not use brushes. Molded motor 1 is an inner rotor type motor in which the rotor 20 is disposed inside the stator 10.

[0053] The molded motor 1 configured in this way is used, for example, as a fan motor mounted on the outdoor unit of an air conditioner. When the molded motor 1 is used as a fan motor, a rotating fan is mounted on the rotating shaft 21 of the molded motor 1. In this case, the object on which the molded motor 1 is mounted is the main body of the outdoor unit of the air conditioner, and the molded motor 1 is mounted to the main body (e.g., frame) of the outdoor unit of the air conditioner by means of a mounting member 40.

[0054] The following is a detailed description of each component of the molded motor 1.

[0055] like Figure 4 As shown, the stator 10 is arranged opposite the rotor 20 with a small air gap between it and the rotor 20. Specifically, the stator 10 is arranged to surround the rotor core 22 of the rotor 20.

[0056] The stator 10 has a stator core 11, a coil 12 and an insulator 13.

[0057] The stator core 11 is the stator iron core that forms the core of the stator 10. The stator core 11 generates a magnetic force to rotate the rotor 20. The stator core 11 is, for example, a laminate of multiple electromagnetic steel plates stacked in a direction extending from the axis C of the rotation shaft 21 of the rotor 20. Alternatively, the stator core 11 is not limited to a laminate, but can also be a block made of magnetic material.

[0058] The stator core 11 has a magnetic yoke formed in an annular shape surrounding the rotor 20 and a plurality of teeth protruding from the magnetic yoke toward the rotation shaft 21. The magnetic yoke is a back magnetic yoke formed on the outside of each tooth. The plurality of teeth protruding toward the rotation shaft 21 face the rotor core 22 of the rotor 20. The plurality of teeth extend radially in a direction orthogonal to the axis C of the rotation shaft 21. The plurality of teeth form slots between adjacent teeth and are arranged at equal intervals along the rotation direction of the rotation shaft 21.

[0059] Multiple coils 12 are armature windings of the stator 10, wound around the stator core 11. The coils 12 are winding coils wound around the stator core 11 with an insulator 13 in between. As an example, the coils 12 are concentrated winding coils wound around multiple teeth of the stator core 11, housed in slots of the stator core 11. Furthermore, the coils 12 are not limited to concentrated windings; they can also be distributed windings.

[0060] Coil 12 is a three-phase winding, enabling the rotor 20 to rotate as a three-phase synchronous motor. Specifically, coil 12 is composed of unit coils for each of the three phases: U-phase, V-phase, and W-phase, which are electrically 120 degrees out of phase with each other. That is, coil 12, wound around the teeth of the stator core 11, is driven by three-phase AC current energized in phase units of U-phase, V-phase, and W-phase. This generates the main magnetic flux of the stator 10 in each tooth of the stator core 11. In other words, each tooth wound with coil 12 is a magnetic pole tooth, an electromagnet that generates magnetic force by energizing coil 12.

[0061] Furthermore, the ends of the coils 12 of each phase are wired to the winding connection portion of the circuit board 70. The circuit board 70 has patterned wiring for electrically connecting the multiple coils 12 for each of the U, V, and W phases. The ends of the coils 12 of each phase are electrically connected to the patterned wiring of the circuit board 70 using solder or the like.

[0062] The insulator 13 is a coil frame. The insulator 13 has a frame-shaped portion for winding the coil 12. The frame portion of the insulator 13 is an insulating frame covering the stator core 11. Specifically, the frame portion of the insulator 13 is configured to cover the teeth of the stator core 11. The insulator 13 may be provided on multiple teeth, but is not limited to this. The insulator 13 may be made of, for example, an insulating resin material such as polybutylene terephthalate (PBT).

[0063] The stator 10, constructed in this way, generates a magnetic force acting on the rotor 20 through the flow of current through the coils 12. Specifically, the stator 10 generates magnetic flux in the air gap surface between itself and the rotor core 22 of the rotor 20, with the N and S poles alternating along the rotational direction (circumferential direction) of the rotating shaft 21. The direction of the main magnetic flux generated by the stator 10 is radial, orthogonal to the axis C of the rotating shaft 21. The stator 10 and the rotor 20 together form a magnetic circuit.

[0064] Next, the rotor 20 will be described. The rotor 20 rotates under the influence of the magnetic force generated by the stator 10. For example... Figure 4 As shown, rotor 20 has a rotating shaft 21. Rotor 20 rotates about the axis C of rotating shaft 21 as the center of rotation.

[0065] The rotor 20 is disposed facing the stator 10. In this embodiment, the rotor 20 is opposite the stator 10 in a direction (radial) orthogonal to the direction in which the axis C of the rotating shaft 21 extends.

[0066] The rotor 20 has a structure in which multiple N and S poles repeatedly exist along the rotation direction of the rotating shaft 21. The rotor 20 is an interior permanent magnet (IPM) rotor. Therefore, the molded motor 1 is an IPM motor.

[0067] Specifically, the rotor 20 has a rotating shaft 21, a rotor core 22, and permanent magnets 23, which are respectively inserted into a plurality of magnet insertion holes 22a formed in the rotor core 22.

[0068] The rotor core 22 is the rotor core that forms the core of the rotor 20. The rotor core 22 is a substantially cylindrical stack of multiple electromagnetic steel plates stacked along the axis C of the rotation shaft 21. In addition, the rotor core 22 is not limited to a stack of multiple steel plates, but can also be a block made of magnetic material.

[0069] Multiple magnet insertion holes 22a formed in the rotor core 22 are provided at equal intervals along the rotation direction of the rotation shaft 21. Furthermore, the multiple magnet insertion holes 22a each penetrate the rotor core 22 in the direction extending from the axis C of the rotation shaft 21, but may not penetrate the rotor core 22. A permanent magnet 23 is embedded in each magnet insertion hole 22a. The permanent magnet 23 is a sintered magnet, and one permanent magnet 23 is inserted into each magnet insertion hole 22a. Alternatively, the permanent magnet 23 may be a bonded magnet.

[0070] A rotating shaft 21 is fixed at the center of the rotor core 22. The rotating shaft 21 is a shaft with a center C. The rotating shaft 21 is a rod-shaped component of the same length as a metal rod. The center C of the rotating shaft 21 becomes the rotation center when the rotor 20 rotates. The length direction (extension direction) of the rotating shaft 21 is the direction in which the center C extends (axis direction).

[0071] The rotating shaft 21 is fixed to the rotor core 22 in a manner that extends towards both sides of the rotor core 22 in the direction of its axis C. Specifically, the rotating shaft 21 is inserted into a through hole located at the center of the rotor core 22 and fixed thereto. The rotating shaft 21 is fixed to the rotor core 22, for example, by pressing or heat-pressing into the through hole. The rotating shaft 21 is rotatably supported by the first bearing 51 and the second bearing 52.

[0072] The rotor 20, constructed in this way, generates a magnetic force that acts on the stator 10. The direction of the main magnetic flux generated by the rotor 20 is the same as that of the stator 10, which is orthogonal to the axis C of the rotation shaft 21 (radial). In other words, the direction of the magnetic flux generated by both the stator 10 and the rotor 20 is radial.

[0073] The rotor 20 rotates under the influence of the magnetic flux generated by the rotor 20 itself and the magnetic flux generated by the stator 10. Specifically, when power is supplied from the circuit board 70 to the coils 12 of the stator 10, the magnetic field current flows through the coils 12 and generates magnetic flux in the stator core 11. The magnetic force generated by the interaction between the magnetic flux generated in the stator core 11 and the magnetic flux generated from the permanent magnet 23 of the rotor 20 becomes the torque that causes the rotor 20 to rotate.

[0074] Next, the molding resin 30 will be described. For example... Figure 4 As shown, molding resin 30 covers the stator 10. The molding resin 30 covers the outer portion of the stator 10 around its entire circumference. Specifically, the molding resin 30 covers the outer portions of the stator core 11, coil 12, and insulator 13. Furthermore, the molding resin 30 is in contact with the outer surfaces of the coil 12 and the insulator 13.

[0075] The molding resin 30 is composed of an insulating resin material with excellent thermal conductivity, such as polyester resin or epoxy resin. The molding resin 30 is composed of a thermosetting resin. In this embodiment, the molding resin 30 is composed of an unsaturated polyester as a thermosetting resin. Specifically, the molding resin 30 is composed of a white BMC (Bulk Molding Compound) unsaturated polyester resin. Furthermore, the color of the BMC forming the molding resin 30 is not particularly limited and can be other colors, such as black.

[0076] In addition, such as Figures 1-4 As shown, the molding resin 30 is part of the outer contour of the molding motor 1, forming the housing. Specifically, as... Figure 4 As shown, the molding resin 30 covering the stator 10 constitutes the housing of the built-in rotor 20.

[0077] The molding resin 30 has a main body 31 forming the main body of the molding motor 1 and protrusions 32 provided on the main body 31. Multiple protrusions 32 are provided on the main body 31. Specifically, as shown... Figures 1-3 As shown, the main body 31 has four protrusions 32. In addition, the main body 31 and the protrusions 32 are molded together to form a single molded resin 30.

[0078] The main body 31 covers the outer portion of the stator 10 around its entire circumference. Specifically, the main body 31 covers the stator core 11, the coil 12, and the insulator 13. Figure 4 As shown, the main body 31 is a cylindrical body with openings at one end and the other end in the direction extending from the axis C of the rotating shaft 21.

[0079] like Figure 3 and Figure 4 As shown, the protrusion 32 protrudes outward in a direction orthogonal to the axis C of rotation 21 (radial). Specifically, multiple protrusions 32 protrude from the outer surface of the main body 31 in a convex shape. Figure 4 As shown, multiple protrusions 32 extend radially in a direction orthogonal to the axis C of the rotation axis 21 when viewed from above. The multiple protrusions 32 are arranged at equal intervals along the rotation direction of the rotation axis 21. Specifically, four protrusions 32 are arranged at 90-degree intervals along the rotation direction of the rotation axis 21.

[0080] The protrusions 32 are the legs of the molding motor 1, and function as mounting parts for mounting the molding motor 1 to the object to be set. The molding motor 1 is mounted to the object to be set by means of mounting members 40 fixed to each protrusion 32.

[0081] Next, the mounting member 40 will be described. The mounting member 40 is a component used to mount the molded motor 1 onto the object to which it is mounted. The object to which the molded motor 1 is mounted is a rigid body made of a metal material or a resin material. For example, in the case where the molded motor 1 is mounted on the fan motor of the outdoor unit of an air conditioner, the molded motor 1 of the fan motor is mounted on the main body of the outdoor unit, which is the object to which it is mounted.

[0082] like Figures 1-4 As shown, the mounting member 40 is fixed to the molding resin 30. The mounting member 40 is fixed to the molding resin 30 by integral molding. In this embodiment, as... Figure 5 As shown, the mounting member 40 is fixed to the protrusion 32 with a portion of the mounting member 40 embedded in the protrusion 32 of the molding resin 30.

[0083] Mounting member 40 includes vibration-damping rubber 41 as an elastic body and cylindrical member 42 disposed around vibration-damping rubber 41. Vibration-damping rubber 41 is mounted on a mounting object on which molding motor 1 is mounted. Figure 6 This is a perspective view of the mounting component 40 of the molded motor 1 according to the embodiment. Figure 7A This is a top view of the mounting component 40.

[0084] Figure 7B It is along Figure 7A A sectional view of line VIIB-VIIB. (e.g.) Figure 6 , Figure 7A and Figure 7B As shown, the mounting component 40 is a component in which the vibration damping rubber 41 and the cylindrical component 42 are integrated. The vibration damping rubber 41 and the cylindrical component 42 are formed into one piece by resin molding before the mounting component 40 is fixed to the molding resin 30.

[0085] The vibration-damping rubber 41, as an elastomer, has the function of absorbing or attenuating the vibration of the molding motor 1, thereby preventing the vibration of the molding motor 1 from being transmitted to the object being placed. In other words, the vibration-damping rubber 41 suppresses the transmission of vibration generated by the molding motor 1 to the object being placed. Specifically, the vibration-damping rubber 41, as an elastomer, is composed of an elastomer with rubber elasticity. For example, the vibration-damping rubber 41 is composed of rubber materials such as ethylene propylene rubber (EPM, EPDM, or EP), or nitrile rubber (NBR). Furthermore, EPM, as ethylene propylene rubber, is a copolymer of ethylene and propylene, and EPDM is a terpolymer containing ethylene, propylene, and a small amount of a third component.

[0086] like Figure 6 , Figure 7A and Figure 7BAs shown, the vibration-damping rubber 41 has a through hole 41a, through which screws, bolts, etc. (hereinafter referred to as "screws, etc.") serving as fixing members for mounting the molding motor 1 to the object being mounted pass. The vibration-damping rubber 41 is a thick-walled cylindrical member with a relatively thick thickness. The vibration-damping rubber 41 is cylindrical in shape. As an example, the radial wall thickness of the vibration-damping rubber 41 is approximately the same as the diameter of the through hole 41a, but it is not limited to this. From the viewpoint of suppressing the vibration of the molding motor 1, the radial wall thickness of the vibration-damping rubber 41 is preferably greater than the diameter of the through hole 41a. The screws, etc., serving as fixing members are selected according to the mounting part of the object being mounted, such as the frame. Specifically, if the frame has internal threads, screws can be used as fixing members. Furthermore, if the frame has through holes, bolts and nuts can be used as fixing members.

[0087] A cylindrical member 42 is disposed on the outside of the vibration-damping rubber 41, surrounding it. The cylindrical member 42 has a shape corresponding to the outer shape of the vibration-damping rubber 41. In this case, the shape of the cylindrical member 42 and the shape of the vibration-damping rubber 41 are preferably the same. Since the vibration-damping rubber 41 is cylindrical, the cylindrical member 42 is also cylindrical. The cylindrical member 42 is disposed such that its inner surface contacts the outer surface of the vibration-damping rubber 41. Therefore, the inner diameter of the cylindrical member 42 is the same as the outer diameter of the vibration-damping rubber 41.

[0088] Furthermore, the height of the cylindrical member 42 is lower than the height of the vibration-damping rubber 41, but it is not limited to this. For example, the height of the cylindrical member 42 and the height of the vibration-damping rubber 41 can be the same. Additionally, the shapes of the vibration-damping rubber 41 and the cylindrical member 42 can be cylindrical rather than circular, and can be square cylindrical, composed of polygons such as quadrilaterals. The shapes of the vibration-damping rubber 41 and the cylindrical member 42 can also be different. The cylindrical member 42 is a ring member. Therefore, the top view of the cylindrical member 42 is a closed ring, but it can also be C-shaped. That is, slits can be formed on the sidewalls of the cylindrical member 42. Furthermore, steps can exist on the surface of the cylindrical member 42, and holes can be formed locally on the sidewalls of the cylindrical member 42.

[0089] The cylindrical member 42 is a rigid member that is harder than the vibration-damping rubber 41. That is, the hardness of the cylindrical member 42 is greater than that of the vibration-damping rubber 41. The cylindrical member 42 is made of a metallic material. For example, the cylindrical member 42 is an iron cylinder formed from an iron-based material. Furthermore, as long as the hardness of the cylindrical member 42 is greater than that of the vibration-damping rubber 41, the material of the cylindrical member 42 is not limited to metallic materials; it can also be made of ceramic materials or rigid resin materials, etc. The cylindrical member 42 only needs to be made of liquid resin 30a (refer to...) that can sufficiently withstand the injection of liquid resin 30a during molding of the molding resin 30. Figure 9B The material can be made with a maximum injection pressure (e.g., around 100 MPa).

[0090] The hardness of the cylindrical member 42 and the vibration-damping rubber 41 can be evaluated using indices such as measured hardness, Vickers hardness, or Shore hardness. The hardness of the cylindrical member 42 and the vibration-damping rubber 41 can also be evaluated using the elastic modulus (Young's modulus) of the materials constituting the cylindrical member 42 and the vibration-damping rubber 41. For example, if the elastic modulus (Young's modulus) of the cylindrical member 42 is greater than the elastic modulus (Young's modulus) of the vibration-damping rubber 41, then the hardness of the cylindrical member 42 is greater than the hardness of the vibration-damping rubber 41.

[0091] As an example, the vibration damping rubber 41 is made of EPDM with an indicated hardness of 35. The cylindrical component 42 is made of iron.

[0092] like Figure 4 and Figure 5 As shown, the vibration damping rubber 41 and the cylindrical member 42 are integrally molded and fixed to the molding resin 30. That is, the vibration damping rubber 41 and the cylindrical member 42 are structures that do not detach from the molding resin 30. Therefore, the vibration damping rubber 41 and the cylindrical member 42 cannot be removed from the molding resin 30.

[0093] Vibration-damping rubber 41 and cylindrical member 42 are disposed on the protrusion 32 of molding resin 30. That is, vibration-damping rubber 41 and cylindrical member 42 are fixed to the protrusion 32 of molding resin 30 by integral molding. Specifically, as described above, vibration-damping rubber 41 and cylindrical member 42 are fixed to molding resin 30 as mounting members 40.

[0094] The vibration-damping rubber 41 is embedded in the protrusion 32 with its upper and lower ends exposed axially. That is, the upper top surface and upper outer peripheral side surface, and the lower bottom surface and lower outer peripheral side surface of the vibration-damping rubber 41 are exposed. On the other hand, the cylindrical member 42 is embedded in the protrusion 32 with its entire outer peripheral side surface not exposed. The upper top surface of the cylindrical member 42 is located at a position recessed from the outer surface of the protrusion 32, and the lower bottom surface of the cylindrical member 42 is flush with the outer surface of the protrusion 32.

[0095] Next, the first bearing 51, the second bearing 52, the first bracket 61, and the second bracket 62 will be described.

[0096] like Figure 4As shown, the first bearing 51 and the second bearing 52 support the rotating shaft 21 for free rotation. Specifically, a first portion 21a of the rotating shaft 21 protruding to one side from the rotor core 22 is supported by the first bearing 51. On the other hand, a second portion 21b of the rotating shaft 21 protruding to the other side from the rotor core 22 is supported by the second bearing 52. As an example, the first bearing 51 and the second bearing 52 are bearings such as ball bearings.

[0097] In this embodiment, the first portion 21a of the rotating shaft 21 is an output shaft, protruding from the first bearing 51 and the first bracket 61. A load, such as a rotary fan, is mounted on the first portion 21a of the rotating shaft 21. The second portion 21b of the rotating shaft 21 is the shaft opposite to the output shaft and does not protrude from the second bearing 52 and the second bracket 62.

[0098] The first bracket 61 holds the first bearing 51. The first bearing 51 is fixed to the recess of the first bracket 61. Furthermore, the second bracket 62 holds the second bearing 52. The second bearing 52 is fixed to the second bracket 62.

[0099] The first bracket 61 is provided at one end of the molding resin 30 in the direction extending along the axis C of the rotation shaft 21. Specifically, the first bracket 61 is configured to block the opening at one end of the main body 31 of the molding resin 30.

[0100] The second bracket 62 is provided at the other end of the molding resin 30 in the direction extending along the axis C of the rotation shaft 21. Specifically, the second bracket 62 is configured to block the opening at the other end of the main body 31 of the molding resin 30.

[0101] In addition, the overall outer diameter of the first bracket 61 is smaller than that of the second bracket 62. That is to say, the overall dimensions of the second bracket 62 are larger than those of the first bracket 61.

[0102] The first support 61 and the second support 62 are made of metal materials such as iron. For example, the first support 61 and the second support 62 are made of metal plates of constant thickness. The first support 61 and the second support 62 are fixed to the molding resin 30. Specifically, when the stator 10 is molded using resin, the first support 61 is fixed together with the stator 10 to the molding resin 30. On the other hand, the second support 62 is fixed to the molded resin 30 after molding.

[0103] As described above, the molded motor 1 of this embodiment includes a stator 10, a rotor 20 having a rotating shaft 21 and rotating under the magnetic force of the stator 10, a molding resin 30 covering at least a portion of the stator 10, an elastic body 41 mounted on an object on which the molded motor 1 is mounted, and at least one rigid member harder than the elastic body 41 disposed around the elastic body 41. The elastic body 41 and the rigid member are fixed to the molding resin 30 by integral molding.

[0104] Therefore, even if the molding motor 1 is placed on the object to be molded using the elastomer 41, it is possible to prevent the molding motor 1 from falling off the object to be molded.

[0105] Next, use Figure 8 , Figure 9A and Figure 9B The manufacturing method of the molded motor 1 will be explained. In particular, the following explanation will focus on the method of fixing the mounting member 40 to the molding resin 30. Figure 8 This is a flowchart of the manufacturing method of the molded motor 1 according to the embodiment. Figure 9A and Figure 9B This is a diagram illustrating the method of fixing the mounting component 40 to the molding resin 30 in the manufacturing method of the molded motor 1. Figure 9A This is an enlarged view of the protrusion 32 of the molding resin 30 of the completed molding motor 1. Figure 9B By along Figure 9A The diagram shows the cross-section of the IXB-IXB line when molding resin 30 is formed using mold 100.

[0106] First, make separately Figure 6 , Figure 7A and Figure 7B The mounting component 40 is shown in the diagram. Specifically, as... Figure 8 As shown, the mounting member 40 is manufactured by integrally molding the vibration damping rubber 41 and the cylindrical member 42 (step S11). The mounting member 40 can be manufactured, for example, by insert molding. In this case, by placing the metal cylindrical member 42 in a mold for resin molding, injecting liquid resin of the resin material constituting the vibration damping rubber 41 into the mold and allowing it to cure, it is possible to manufacture the mounting member 40 that fixes the cylindrical member 42 to the vibration damping rubber 41 by integral molding.

[0107] Secondly, such as Figure 8 As shown, the mounting member 40 and the stator 10 are molded together using molding resin 30 (step S12). Thus, it is possible to manufacture molding resin 30 in which the mounting member 40 and the stator 10 are integrally molded.

[0108] Specifically, firstly, such as Figure 9BAs shown, mounting component 40 and stator 10 having stator core 11 are disposed in mold 100 of injection molding machine, and coil 12 is wound around stator core 11 with insulator 13 in between. In addition, first bracket 61 is also disposed in mold 100 at this time.

[0109] Mold 100 is composed of multiple blocks. For example, in the case of using a horizontal injection molding machine, such as... Figure 9B As shown, the mold 100 is configured to open and close longitudinally using a first block 101 as the lower mold and a second block 102 as the upper mold. In this case, the mounting member 40 is positioned in the mold 100 by having a protrusion 101a of the first block 101 pass through a through hole 41a formed in the vibration-damping rubber 41 of the mounting member 40. Furthermore, the diameter of the protrusion 101a is the same as the inner diameter of the through hole 41a of the vibration-damping rubber 41, and the protrusion 101a inserted into the through hole 41a of the vibration-damping rubber 41 fits tightly against the vibration-damping rubber 41.

[0110] Next, liquid resin 30a, constituting the molding resin 30, is injected into the mold 100 through a gate located in the mold 100. At this time, since the cylindrical member 42 surrounds the vibration-damping rubber 41, when the liquid resin 30a is injected from the outside of the mounting member 40, the liquid resin 30a flows into the mold 100 without directly contacting the outer peripheral surface of the vibration-damping rubber 41. Specifically, the liquid resin 30a injected into the mold 100 fills the mold 100 while simultaneously contacting the outer surface of the cylindrical member 42 surrounding the vibration-damping rubber 41. By providing the cylindrical member 42 on the outside of the vibration-damping rubber 41 in this way, the injection pressure of the liquid resin 30a can be borne by the cylindrical member 42, preventing the application of injection pressure of the liquid resin 30a to the vibration-damping rubber 41. Therefore, deformation of the vibration-damping rubber 41 caused by the injection pressure of the liquid resin 30a can be suppressed.

[0111] When liquid resin 30a is injected into mold 100, as described above, the protrusion 101a of the first piece 101 penetrates through the through hole 41a formed in the vibration damping rubber 41. Thus, the vibration damping rubber 41 is supported by the protrusion 101a, thereby further suppressing the deformation of the vibration damping rubber 41 in mold 100 when the molding resin 30 is molded.

[0112] After liquid resin 30a is filled into mold 100, the liquid resin 30a is cured. As a result, stator 10, mounting member 40 and first bracket 61 are fixed to molding resin 30 by integral molding.

[0113] Furthermore, the molded motor 1 is then completed by assembling other components such as the rotor 20 onto the stator 10, which is covered by the molding resin 30.

[0114] Next, the process of achieving the technology disclosed herein is also described in detail, highlighting the features of the molded motor 1 of this embodiment.

[0115] Figure 10 This is a perspective view showing the structure of a conventional molded motor. In the past, when a fan motor with a molded motor was installed on a target object, the fan motor was mounted on the target object with vibration damping rubber in between, so that the vibration generated by the fan motor was not transmitted to the target object.

[0116] In this case, such as Figure 10 As shown, in the conventional molded motor 1X, after the stator molding part is completed by covering the stator with molding resin 30X, vibration damping rubber 41X is installed on the protrusion 32X (leg) of molding resin 30X. Figure 11 This is a flowchart of a traditional method for manufacturing molded motors. Specifically, such as... Figure 11 As shown, the vibration damping rubber 41X is manufactured by resin molding (step S21). A stator molding part is manufactured by molding the stator using molding resin 30X (step S22). The vibration damping rubber 41X is then installed on the stator molding part (step S23). In this case, as... Figure 10 As shown, the vibration damping rubber 41X is installed on the molding resin 30X by laterally inserting it into the protrusion 32X of the molding resin 30X. In other words, the vibration damping rubber 41X is subsequently installed on the molding resin 30X.

[0117] In this case, when a fan motor 1X, which has vibration damping rubber 41X installed on molding resin 30X, is installed on the object, there is a risk that the fan motor may fall off the object due to typhoons or earthquakes.

[0118] Therefore, it is considered to fix the vibration damping rubber 41X to the molding resin 30X by integral molding. That is, it is considered to use the molding resin 30X to mold the vibration damping rubber 41X together with the stator when molding the stator.

[0119] However, after attempting to integrally mold the vibration-damping rubber 41X using molding resin 30X, it was found that the vibration-damping rubber 41X deformed. Specifically, it was found that the deformation of the vibration-damping rubber 41X was caused by the injection pressure when the liquid resin constituting the molding resin 30X was injected into the mold.

[0120] Regarding this issue, the inventors of this application conducted in-depth research and came up with the following concept: when molding vibration damping rubber integrally with molding resin, at least one rigid component harder than vibration damping rubber is arranged around the vibration damping rubber, and the vibration damping rubber and the rigid component are fixed to the molding resin by integral molding.

[0121] The molded motor 1 disclosed herein is based on this concept. Specifically, the molded motor 1 includes: a vibration-damping rubber 41 mounted on an object on which the molded motor 1 is mounted; and a rigid member that is harder than the vibration-damping rubber 41. At least one rigid member is disposed around the vibration-damping rubber 41. The vibration-damping rubber 41 and the rigid member are fixed to the molding resin 30 by integral molding. The molded motor 1 includes a cylindrical member 42 as a rigid member disposed around the vibration-damping rubber 41.

[0122] In this way, a cylindrical member 42 is arranged around the vibration-damping rubber 41 as a rigid member that is harder than the vibration-damping rubber 41. As a result, even if the vibration-damping rubber 41 is integrally molded using molding resin 30, deformation of the vibration-damping rubber 41 due to the injection pressure of the liquid resin 30a used for molding the molding resin 30 can be suppressed.

[0123] In particular, in this embodiment, the cylindrical member 42 is disposed on the outside of the vibration isolation rubber 41 in such a way that it surrounds the vibration isolation rubber 41.

[0124] According to this structure, such as Figure 9B As shown, when liquid resin 30a is injected from the outside of the vibration-damping rubber 41, the injection pressure of the liquid resin 30a can be borne by the cylindrical member 42 surrounding the outside of the vibration-damping rubber 41. This prevents the application of injection pressure of liquid resin 30a to the vibration-damping rubber 41. Therefore, deformation of the vibration-damping rubber 41 due to the injection pressure of liquid resin 30a can be effectively suppressed.

[0125] The molding resin 30 has a protrusion 32 that protrudes outward in a radial direction orthogonal to the axis C of the rotation shaft 21. Vibration-damping rubber 41 and a cylindrical member 42, which is a rigid component, are disposed on the protrusion 32. In other words, the vibration-damping rubber 41 and the cylindrical member 42 are fixed to the protrusion 32 of the molding resin 30 by integral molding.

[0126] According to this structure, the molding motor 1 can be mounted on the object to be mounted using the protrusion 32 of the molding resin 30. In other words, the molding motor 1 can be mounted on the object to be mounted with respect to the vibration damping rubber 41 fixed to the protrusion 32. Therefore, the molding motor 1 can be easily mounted on the object to be mounted.

[0127] Specifically, the vibration-damping rubber 41 is provided with a through hole 41a, which is used for screws or the like to be used to mount the molding motor 1 to the object being mounted. Thus, the molding motor 1 can be easily mounted to the object being mounted by passing screws or the like through the through hole 41a formed in the vibration-damping rubber 41 and securing them with threads.

[0128] Furthermore, in this embodiment, the vibration isolation rubber 41 is made of ethylene propylene rubber or nitrile rubber.

[0129] Therefore, the vibration of the molding motor 1 can be effectively absorbed by the vibration isolation rubber 41. As a result, the transmission of the vibration of the molding motor 1 to the object being placed can be effectively suppressed. For example, the vibration displacement of the molding motor 1 is 20μm to 30μm, but the vibration of this level of vibration displacement can be effectively absorbed by the vibration isolation rubber 41.

[0130] Furthermore, the heat resistance temperature of ethylene propylene rubber or nitrile rubber is below 150°C. Specifically, the heat resistance temperature (maximum specification temperature) of ethylene propylene rubber is 150°C, and the heat resistance temperature (maximum specification temperature) of nitrile rubber is 130°C. Therefore, by using ethylene propylene rubber or nitrile rubber for the vibration isolation rubber 41, the molding temperature of the liquid resin 30a during molding of the molding resin 30 can reach 150°C.

[0131] For example, the molding temperature when using unsaturated polyester resin for resin molding is 150°C. Therefore, by molding resin 30 as unsaturated polyester resin, the material of vibration damping rubber 41 can be set to ethylene propylene rubber or nitrile rubber.

[0132] In the molded motor 1 of this embodiment, since the vibration-damping rubber 41 and the cylindrical member 42 are fixed to the molding resin 30 by integral molding, the vibration-damping rubber 41 does not detach from the molding resin 30. Therefore, even if the molded motor 1 is placed on the object for the purpose of noise reduction using the vibration-damping rubber 41, it is possible to prevent the molded motor 1 from falling off the object.

[0133] For example, when a fan motor equipped with a molded motor 1 is mounted on the main body of the outdoor unit of an air conditioner through vibration-damping rubber 41, the fan motor can be prevented from detaching from the main body of the outdoor unit even in the event of strong winds such as typhoons or earthquakes. In other words, a fan motor that can achieve both low noise by utilizing vibration-damping rubber 41 and prevention of detachment from the mounting object can be realized.

[0134] (Modified Example)

[0135] The molded motor 1 of this disclosure has been described above based on the embodiments. However, this disclosure is not limited to the above embodiments.

[0136] For example, in the mounting member 40 of the above embodiment, the inner diameter of the cylindrical member 42 and the outer diameter of the vibration damping rubber 41 are approximately the same. However, it is not limited to this. Figure 12A This is a top view of mounting component 40A in variant example 1. Figure 12B It is along Figure 12A A cross-sectional view of the XIIB-XIIB line. For example, it can also be like... Figure 12Aand Figure 12B As shown in the mounting member 40A, in the portion where the cylindrical member 42A contacts the vibration-damping rubber 41, the inner diameter of the cylindrical member 42A is smaller than the outer diameter of the vibration-damping rubber 41. That is, a portion of the cylindrical member 42A in the thickness direction is embedded in the vibration-damping rubber 41.

[0137] In the case of mounting member 40A in this modified example, a portion of the cylindrical member 42A is embedded in the vibration-damping rubber 41, thus preventing the cylindrical member 42A from shifting axially (vertically). By embedding a portion of the cylindrical member 42A in the vibration-damping rubber 41, the contact area between the cylindrical member 42A and the vibration-damping rubber 41 can be increased compared to the case where a portion of the cylindrical member 42A is not embedded in the vibration-damping rubber 41. Therefore, when a molded motor to which the mounting member 40A is fixed in molding resin is threaded to the object by threading a screw or the like through the through hole 41a formed in the mounting member 40A, free-spinning of the cylindrical member 42A can be suppressed.

[0138] Alternatively, the entire thickness of the cylindrical member 42A may be embedded in the vibration-damping rubber 41, rather than only a portion of the cylindrical member 42A being embedded in the vibration-damping rubber 41. That is, the outer surface of the cylindrical member 42A may be exposed, and the outer diameter of the cylindrical member 42A may be the same as the outer diameter of the vibration-damping rubber 41. Furthermore, the cylindrical member 42A may be embedded in the vibration-damping rubber 41 along its entire circumference. However, this is not a limitation. A portion of the circumference may be embedded in the vibration-damping rubber 41. For example, multiple protrusions may be provided circumferentially on the inner surface of the cylindrical member 42A, with only these protrusions embedded in the vibration-damping rubber 41.

[0139] Furthermore, in the above embodiment, the mounting member 40 has one cylindrical member. However, it is not limited to this. For example, the mounting member 40 may have multiple cylindrical members. Specifically, it may also be like... Figure 13A and Figure 13B As shown in the mounting member 40B, it is a rigid member harder than the vibration-damping rubber 41, and has a first cylindrical member 42a and a second cylindrical member 42b. Furthermore, Figure 13A This is a top view of the mounting component 40B in variant example 2. Figure 13B It is along Figure 13A A sectional view of line XIIIB-XIIIB.

[0140] In mounting member 40B, the first cylindrical member 42a is disposed on the outer side of the vibration-damping rubber 41, surrounding it. The second cylindrical member 42b is disposed on the inner side of the vibration-damping rubber 41. That is, the first cylindrical member 42a is the outer tube, and the second cylindrical member 42b is the inner tube.

[0141] Specifically, the first cylindrical member 42a is the same as the cylindrical member 42 of the mounting member 40 in the above embodiment. The first cylindrical member 42a is fixed to the vibration damping rubber 41 in the same way as the mounting member 40 in the above embodiment. Therefore, the first cylindrical member 42a is an iron cylindrical tube, and it is arranged such that the inner surface of the first cylindrical member 42a contacts the outer surface of the vibration damping rubber 41.

[0142] The second cylindrical member 42b is made of a metal, ceramic, or hard resin material. As an example, the second cylindrical member 42b is also an iron cylindrical tube, just like the first cylindrical member 42a. Furthermore, the second cylindrical member 42b and the first cylindrical member 42a have the same shape (both are cylindrical). However, they can also have different shapes. The second cylindrical member 42b and the first cylindrical member 42a are made of the same material (both are iron). However, they can also be made of different materials.

[0143] Furthermore, the entire thickness of the second cylindrical member 42b is embedded in the vibration-damping rubber 41. That is, the inner diameter of the second cylindrical member 42b is the same as the inner diameter of the vibration-damping rubber 41, the inner surface of the second cylindrical member 42b is exposed, and the inner surface of the second cylindrical member 42b is flush with the inner surface of the vibration-damping rubber 41. Therefore, in the mounting member 40B, the through hole of the second cylindrical member 42b serves as a mounting hole (screw through hole) for mounting the molded motor to the object being mounted.

[0144] Thus, the mounting member 40B in this modified example becomes a structure in which the vibration-damping rubber 41 is sandwiched between the first cylindrical member 42a and the second cylindrical member 42b. Specifically, the mounting member 40B is a structure in which the second cylindrical member 42b is added to the mounting member 40 of the above embodiment.

[0145] According to this structure, the deformation of the vibration-damping rubber 41 caused by the injection pressure of the liquid resin 30a during molding can be suppressed by the first cylindrical member 42a. Since the through hole of the second cylindrical member 42b becomes a mounting hole, the dimensional accuracy of the mounting hole of the mounting member 40B can be improved. Therefore, the shaking when the mounting member 40B and the object being installed are threaded together can be eliminated, and the molding motor can be stably fixed to the object being installed. As a result, the molding motor can be further prevented from falling off the object being installed.

[0146] Alternatively, the second cylindrical member 42b may not be entirely embedded in the vibration-damping rubber 41 along its thickness direction. For example, a portion of the second cylindrical member 42b along its thickness direction may be embedded in the vibration-damping rubber 41. Or, the second cylindrical member 42b may not be entirely embedded along its thickness direction. Furthermore, a portion or all of the first cylindrical member 42a along its thickness direction may be embedded in the vibration-damping rubber 41. Thus, at least a portion of either the first cylindrical member 42a or the second cylindrical member 42b may be embedded in the vibration-damping rubber 41.

[0147] Furthermore, in the mounting member 40 of the above embodiment, the cylindrical member 42 is cylindrical in shape with no steps on the surface, but is not limited to this. Figure 14A This is a top view of the mounting component 40C in variation 3. Figure 14B It is along Figure 14A A cross-sectional view of the XIVB-XIVB line. For example, it can also be like... Figure 14A and Figure 14B As shown in the mounting member 40C, the cylindrical member 42C is a stepped cylindrical shape. In this case, it is preferable that the stepped portion of the cylindrical member 42C is formed such that a portion of it protrudes toward the vibration-damping rubber 41, and that the stepped portion is embedded in the vibration-damping rubber 41.

[0148] In the case of the mounting member 40C in this modified example, the stepped portion of the cylindrical member 42C is embedded in the vibration-damping rubber 41, thus preventing the cylindrical member 42C from shifting axially (vertically). Furthermore, the stepped portion is secured to the vibration-damping rubber 41. Therefore, when the molded motor is threaded and fixed to the object by inserting a screw or the like through the through hole 41a formed in the mounting member 40C, free-spinning of the cylindrical member 42C can be prevented.

[0149] also, Figure 15A This is a top view of the mounting component 40D in variation 4. Figure 15B It is along Figure 15A A cross-sectional view of the XVB-XVB line. It can also be like... Figure 15A and Figure 15B As shown in the mounting member 40D, the stepped portion of the cylindrical member 42D is not embedded into the vibration-damping rubber 41 to fix the cylindrical member 42D to the vibration-damping rubber 41. According to this structure, during the molding of the molding resin 30, the positioning accuracy of the cylindrical member 42D can be improved by reliably holding the cylindrical member 42D with the mold 100.

[0150] In the mounting member 40 of the above embodiment, the rigid member disposed around the vibration-damping rubber 41 is a cylindrical member 42. However, it is not limited to this. That is, the shape of the rigid member disposed around the vibration-damping rubber 41 may not be cylindrical. In other words, the rigid member disposed around the vibration-damping rubber 41 is made of a material harder than the vibration-damping rubber 41, and the injection pressure of the liquid resin 30a applied to the vibration-damping rubber 41 can be suppressed when the vibration-damping rubber 41 is fixed to the molding resin 30 by molding.

[0151] In the above embodiments, the cylindrical member 42 is cylindrical or square, and its top-view shape is circular or polygonal. However, it is not limited to this. For example, the cylindrical member 42 may also be a cylindrical shape with a star-shaped or similar outer diameter when viewed from above.

[0152] In the above embodiment, rotor 20 is an IPM rotor. However, it is not limited to this. For example, when using a permanent magnet type rotor as rotor 20, rotor 20 may also be a surface magnet type rotor (SPM rotor) in which multiple permanent magnets are provided on the outer surface of the rotor core.

[0153] In the above embodiment, the use of the molded motor 1 as a fan motor is illustrated, but it is not limited to this. The molded motor 1 can also be applied to devices other than fan motors. That is, the load on the rotating shaft 21 mounted on the molded motor 1 is not limited to a rotating fan.

[0154] Furthermore, this disclosure also includes forms obtained by implementing various modifications to the above embodiments and variations that can be conceived by those skilled in the art, or forms achieved by arbitrarily combining the constituent elements and functions of the above embodiments and variations without departing from the spirit of this disclosure.

[0155] Industrial availability

[0156] The molded motor disclosed herein can be used in various fields, including fan motors used in air conditioning equipment such as air conditioners.

[0157] Explanation of reference numerals in the attached figures

[0158] 1. Molded motor; 10. Stator; 11. Stator core; 12. Coil; 13. Insulator; 20. Rotor; 21. Rotating shaft; 21a. Part 1; 21b. Part 2; 22. Rotor core; 22a. Magnet insertion hole; 23. Permanent magnet; 30. Molding resin; 30a. Liquid resin; 31. Main body; 32. Protrusion; 40, 40A, 40B, 40C, 40D 41. Installation components; 42. Vibration-damping rubber (elastomer); 41a. Through hole; 42, 42A, 42C, 42D. Cylindrical components; 42a. First cylindrical component; 42b. Second cylindrical component; 51. First bearing; 52. Second bearing; 61. First bracket; 62. Second bracket; 70. Circuit board; 100. Mold; 101. First piece; 101a. Protrusion; 102. Second piece.

Claims

1. A molded motor, wherein, The molded motor includes: stator; The rotor has a rotating shaft and rotates under the magnetic force of the stator. Molded resin, which covers at least a portion of the stator; An elastomer, which is mounted on a mounting object on which the molding motor is mounted; and A rigid member, having at least one disposed around the elastic body, and being harder than the elastic body. The elastomer and the rigid component are fixed to the molding resin by integral molding.

2. The molded motor according to claim 1, wherein, The molding resin has a protrusion that protrudes outward in a radial direction orthogonal to the axial direction of the rotation axis, and the elastomer and the rigid member are disposed on the protrusion.

3. The molded motor according to claim 1 or 2, wherein, The molded motor includes a cylindrical member as the rigid member, the cylindrical member being disposed on the outside of the elastomer in a manner that surrounds the elastomer.

4. The molded motor according to claim 3, wherein, A portion of the cylindrical member is embedded in the elastomer.

5. The molded motor according to claim 1 or 2, wherein, The molded motor includes a first cylindrical member and a second cylindrical member as the rigid member, the first cylindrical member being disposed on the outside of the elastomer in a manner that surrounds the elastomer, and the second cylindrical member being disposed on the inside of the elastomer.

6. The molded motor according to claim 5, wherein, A portion of at least one of the first cylindrical member and the second cylindrical member is embedded in the elastic body.

7. The molded motor according to any one of claims 1 to 6, wherein, The rigid component is made of metallic material.

8. The molded motor according to any one of claims 1 to 7, wherein, The molding resin is composed of unsaturated polyester resin.

9. The molded motor according to any one of claims 1 to 8, wherein, The elastic body has a through hole for a fixing member to be used to mount the molded motor to the object.

10. The molded motor according to any one of claims 1 to 9, wherein, The elastomer is a vibration-damping rubber that suppresses the transmission of vibrations generated by the molding motor to the object being installed.

11. The molded motor according to claim 10, wherein, The vibration isolation rubber is made of ethylene propylene rubber or nitrile rubber.

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