Iron core assembly, motor and pump device

Abstract

The utility model provides an iron core assembly, a motor and a pump device, which are helpful for improving the assembly precision of the iron core assembly. The iron core assembly of the utility model comprises an iron core which is formed by enclosing a plurality of divided iron cores arranged in a row into a ring; and a plurality of insulators which are formed by molding on each of the plurality of split cores and partially cover each of the plurality of split cores on one end surface in the axial direction, the split cores located at the first end of the row being a first split core, and the split cores located at the second end of the row being a second split core. The divided iron core located at a second end opposite to the first end in the row is set as a second divided iron core, and the area of the end surface of the first divided iron core exposed from the insulator on the first end side is larger than the area of the end surface of the first divided iron core exposed from the insulator on the second end side. The area of the end surface of the second split core exposed from the insulator on the second end side is larger than the area of the end surface of the second split core exposed from the insulator on the first end side.

Description

Technical Field

[0001] The utility model relates to an iron core component, a motor and a pump device. Background Art

[0002] In the past, there was a core assembly comprising: a core formed by enclosing a plurality of split cores arranged in a row in a ring shape; and a plurality of insulators formed on the plurality of split cores by molding the core, respectively, and respectively partially covering the axial end faces of the plurality of split cores.

[0003] When the core is molded to manufacture the above-mentioned core assembly, a plunger can be used to press the connecting parts of the axial end faces of the circumferentially adjacent split cores (specifically, the parts exposed from the insulator). However, since a sliding mold is required to press the circumferential end face of the split core located at one end of a row (hereinafter referred to as the first split core) on one end side and the circumferential end face of the split core located at the other end of a row (hereinafter referred to as the second split core) on the other end side, it is impossible to provide a plunger to press the end of the axial end face of the first split core on one end side and the end of the axial end face of the second split core on the other end side (that is, the sliding mold will interfere with the plunger). Therefore, it is easy to generate an excess gap between the part on the one end side of the first split core and the mold, and between the part on the other end side of the second split core and the mold. As a result, resin is easy to leak from the above-mentioned gap to the axial end face of the core constituting the assembly reference surface to form burrs. During assembly, the core will tilt due to the burrs, resulting in a decrease in assembly accuracy. Utility Model Content

[0004] The utility model is completed in view of the above problems, and aims to provide a core assembly, a motor and a pump device, which are helpful to improve the assembly accuracy of the core assembly.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an iron core assembly, comprising: an iron core, which is formed by enclosing a plurality of split iron cores arranged in a row into a ring shape; and a plurality of insulators, which are respectively formed on the plurality of split iron cores by molding, and respectively partially cover the end faces on one side in the axial direction of the plurality of split iron cores, wherein the split iron core located at the first end of the row is set as the first split iron core, and the split iron core located at the second end of the row opposite to the first end is set as the second split iron core, the end portion of the first end side of the end face of the first split iron core exposed from the insulator has a larger area than the end portion of the second end side of the end face of the first split iron core exposed from the insulator, and the end portion of the second end side of the end face of the second split iron core exposed from the insulator has a larger area than the end portion of the first end side of the end face of the second split iron core exposed from the insulator.

[0006] According to the core assembly of the utility model, the split core located at the first end of a row is set as the first split core, and the split core located at the second end opposite to the first end of a row is set as the second split core, the area of ​​the end portion of the first end side of the end face of the first split core exposed from the insulator is larger than the area of ​​the end portion of the second end side of the end face of the first split core exposed from the insulator, and the area of ​​the end portion of the second end side of the end face of the second split core exposed from the insulator is larger than the area of ​​the end portion of the first end side of the end face of the second split core exposed from the insulator. Therefore, it is easy to set a plunger for pressing the end portion of the first end side of the end face of the first split core and a plunger for pressing the end portion of the second end side of the end face of the second split core, thereby suppressing the gap between the end portion of the first end side of the first split core and the mold and the gap between the end portion of the second end side of the second split core and the mold, and suppressing resin leakage. Therefore, it is possible to suppress the generation of burrs on the end face of the core constituting the assembly reference surface, thereby improving the assembly accuracy of the core assembly.

[0007] In addition, in the core assembly of the present invention, the split core located between the first end and the second end of the row is preferably set as a third split core, and the area of ​​the end portion of the end face of the third split core on the first end side exposed from the insulator is equal to the area of ​​the end portion of the end face of the third split core on the second end side exposed from the insulator.

[0008] In addition, in the core assembly of the present invention, it is preferred that the area of ​​the end portion of the second end side of the end face of the first split iron core exposed from the insulator is equal to the area of ​​the end portion of the first end side of the end face of the third split iron core exposed from the insulator, and the area of ​​the end portion of the first end side of the end face of the second split iron core exposed from the insulator is equal to the area of ​​the end portion of the second end side of the end face of the third split iron core exposed from the insulator.

[0009] In addition, in the core assembly of the present invention, the split core preferably has: a core back; and teeth protruding radially inward from the core back, and the insulator has: a core back covering portion covering the core back; and a tooth covering portion covering the teeth, and in the insulator formed on the first split core, a first notch portion is formed radially outside the end portion of the first end side, and in the insulator formed on the second split core, a second notch portion is formed radially outside the end portion of the second end side.

[0010] According to the core assembly of the utility model, the split core comprises: a core back; and teeth protruding radially inward from the core back, the insulator comprises: a core back covering portion covering the core back; and a tooth covering portion covering the teeth, in the insulator formed on the first split core, a first notch portion is formed radially outward of the end portion on the first end side, and in the insulator formed on the second split core, a second notch portion is formed radially outward of the end portion on the second end side. Therefore, it is easy to use the first notch portion and the second notch portion to set a plunger for pressing the end portion on the first end side of the end face of the first split core and a plunger for pressing the end portion on the second end side of the end face of the second split core, and unlike the case where the notch portion is formed radially inward, the coil wire wound on the tooth covering portion of the insulator can be prevented from contacting the core.

[0011] In addition, in the core assembly of the present invention, it is preferred that the surface of the first notch portion facing the first end side is formed so that it is closer to the circumferential center of the first split iron core as it is radially inward, and the surface of the second notch portion facing the second end side is formed so that it is closer to the circumferential center of the second split iron core as it is radially inward.

[0012] According to the core assembly of the utility model, the surface of the first notch portion facing the first end side is formed so that the closer it is to the radial inner side, the closer it is to the circumferential center of the first split iron core, and the surface of the second notch portion facing the second end side is formed so that the closer it is to the radial inner side, the closer it is to the circumferential center of the second split iron core. Therefore, while ensuring the strength of the insulator formed on the first split iron core and the insulator formed on the second split iron core, the first notch portion and the second notch portion can be enlarged, thereby making it easier to use the first notch portion and the second notch portion to set a plunger for pressing the end portion of the first end side of the end face of the first split iron core and a plunger for pressing the end portion of the second end side of the end face of the second split iron core.

[0013] Furthermore, in the core assembly of the present invention, preferably, the end of the first end side of the end surface of the first split core is a plane perpendicular to the axial direction, and the end of the second end side of the end surface of the second split core is a plane perpendicular to the axial direction.

[0014] In addition, in order to achieve the above-mentioned purpose, the utility model provides a motor, comprising: a stator, the stator having any one of the core components described above; and a rotor, the rotor rotating relative to the stator.

[0015] In addition, in order to achieve the above-mentioned purpose, the utility model provides a pump device, including: the above-mentioned motor; and an impeller, wherein the impeller is connected to the rotor of the motor.

[0016] (Effect of utility model)

[0017] According to the utility model, the split iron core located at the first end of a row is set as the first split iron core, and the split iron core located at the second end of a row opposite to the first end is set as the second split iron core, the area of ​​the end portion of the first end side of the end face of the first split iron core exposed from the insulator is larger than the area of ​​the end portion of the second end side of the end face of the first split iron core exposed from the insulator, and the area of ​​the end portion of the second end side of the end face of the second split iron core exposed from the insulator is larger than the area of ​​the end portion of the first end side of the end face of the second split iron core exposed from the insulator. Therefore, it is easy to set a plunger for pressing the end portion of the first end side of the end face of the first split iron core and a plunger for pressing the end portion of the second end side of the end face of the second split iron core, thereby suppressing the gap between the end portion of the first end side of the first split iron core and the mold and the gap between the end portion of the second end side of the second split iron core and the mold, thereby suppressing resin leakage, thereby suppressing the generation of burrs on the end face of the core constituting the assembly reference surface, thereby improving the assembly accuracy of the core assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view schematically showing a pump device according to an embodiment of the present invention.

[0019] Figure 2 It is a perspective view schematically showing a core assembly included in the pump device according to the embodiment of the present invention.

[0020] Figure 3 It is a top view schematically showing a core assembly included in the pump device according to the embodiment of the present invention.

[0021] Figure 4 This is another perspective view schematically showing the core assembly included in the pump device according to the embodiment of the present invention.

[0022] Figure 5 It is a developed top view schematically showing a core assembly included in the pump device according to the embodiment of the present utility model.

[0023] Figure 6 It is a partially expanded top view schematically showing a core assembly included in the pump device according to the embodiment of the present utility model.

[0024] Figure 7 It is another partially expanded top view schematically showing the core assembly included in the pump device according to the embodiment of the present utility model.

[0025] Figure 8 It is a partial top view schematically showing a core assembly included in a pump device according to a modified example of the present invention.

[0026] Fig. 9 It is another partial top view schematically showing the core assembly included in the pump device according to the modified example of the present invention.

[0027] (Explanation of symbols)

[0028] 1 Pump unit

[0029] 10. Housing

[0030] 11 cylindrical part

[0031] 12 Fluid suction pipe

[0032] 13 Fluid discharge pipe

[0033] 20 Core assembly

[0034] 21 Iron Core

[0035] 211 Split Core

[0036] 211A First split core

[0037] 211B Second split core

[0038] 211C Third split core

[0039] 2111 Core Back

[0040] 2112 teeth

[0041] 22 Insulator

[0042] 221 Core back covering

[0043] 222 tooth covering part

[0044] 23 Coil

[0045] ES end face

[0046] E1 First End

[0047] E2 Second terminal

[0048] R1 First notch

[0049] R2 Second notch

[0050] L1 One side on the axis

[0051] L2 The other side of the axis DETAILED DESCRIPTION

[0052] Next, combine Figures 1 to 7 The pump device according to the embodiment of the utility model is described, wherein: Figure 1 2 is a perspective view schematically showing a pump device according to an embodiment of the present invention. Figure 2 is a perspective view schematically showing a core assembly included in a pump device according to an embodiment of the present utility model, Figure 3is a top view schematically showing a core assembly included in a pump device according to an embodiment of the present utility model, Figure 4 is another perspective view schematically showing the core assembly included in the pump device according to the embodiment of the utility model, Figure 5 is a schematic top view of an expanded core assembly included in a pump device according to an embodiment of the present utility model, Figure 6 is a partially expanded top view schematically showing a core assembly included in a pump device according to an embodiment of the present utility model, Figure 7 It is another partially expanded top view schematically showing the core assembly included in the pump device according to the embodiment of the present utility model.

[0053] (Overall structure of the pump device)

[0054] like Figure 1 As shown, the pump device 1 includes a housing 10 , and a motor and an impeller (not shown) are accommodated in the housing 10 .

[0055] Here, if Figure 2 As shown, the motor has a stator and a rotor, the stator has an iron core assembly 20, and the rotor rotates relative to the stator. In addition, the impeller is connected to the rotor of the motor.

[0056] (Structure of the housing)

[0057] like Figure 1 As shown, the housing 10 includes: a cylindrical portion 11, the interior of which is formed with a pump chamber for accommodating an impeller and a motor chamber for accommodating a motor; a fluid suction pipe 12, which protrudes from one end of the cylindrical portion 11; and a fluid discharge pipe 13, which protrudes from the outer peripheral surface of the cylindrical portion 11.

[0058] Furthermore, during operation, the motor drives the impeller to rotate, whereby a working fluid such as water is sucked into the pump chamber from the fluid suction pipe 12 , is compressed in the pump chamber, and is then discharged from the fluid discharge pipe 13 .

[0059] (Motor structure)

[0060] As described above, the motor has a stator and a rotor, and the stator has the core assembly 20 .

[0061] Here, if Figures 2 to 5 As shown, the core assembly 20 includes: a core 21, which is arranged in a row (refer to Figure 5 ) is formed by a plurality of split cores 211 surrounding a ring; and a plurality of insulators 22, the plurality of insulators 22 are respectively formed on the plurality of split cores 211 by molding, and respectively partially cover one side L1 (in the axial direction) of the plurality of split cores 211 Figure 2 The end surface ES of the upper side of the middle. And, as Figures 5 to 7As shown, when the split iron core 211 located at the first end E1 of a row is set as the first split iron core 211A, and the split iron core 211 located at the second end E2 of a row opposite to the first end E1 is set as the second split iron core 211B, the area S11 of the end portion of the end face ES of the first split iron core 211A on the first end E1 side exposed from the insulator 22 is larger than the area S12 of the end portion of the end face ES of the first split iron core 211A on the second end E2 side exposed from the insulator 22, and the area S21 of the end portion of the end face ES of the second split iron core 211B on the second end E2 side exposed from the insulator 22 is larger than the area S22 of the end portion of the end face ES of the second split iron core 211B on the first end E1 side exposed from the insulator 22.

[0062] In addition, if Figures 5 to 7 As shown, on one axial side L1, in the insulator 22 formed on the first split core 211A, a first notch portion R1 is formed radially outside the end portion on the first end E1 side, and in the insulator 22 formed on the second split core 211B, a second notch portion R2 is formed radially outside the end portion on the second end E2 side.

[0063] In addition, if Figures 5 to 7 As shown, the split iron core 211 located between the first end E1 and the second end E2 of a row is set as a third split iron core 211C, and the area S31 of the end portion on the first end E1 side of the end face ES of the third split iron core 211C exposed from the insulator 22 is equal to the area S32 of the end portion on the second end E2 side of the end face ES of the third split iron core 211C exposed from the insulator 22.

[0064] In addition, if Figures 5 to 7 As shown, the area S12 of the end portion on the second end E2 side of the end face ES of the first split iron core 211A exposed from the insulator 22 is equal to the area S31 of the end portion on the first end E1 side of the end face ES of the third split iron core 211C exposed from the insulator 22, and the area S22 of the end portion on the first end E1 side of the end face ES of the second split iron core 211B exposed from the insulator 22 is equal to the area S32 of the end portion on the second end E2 side of the end face ES of the third split iron core 211C exposed from the insulator 22.

[0065] In addition, if Figure 2 As shown, the end portion of the end surface ES of the first split core 211A on the first end E1 side is a plane perpendicular to the axial direction, and the end portion of the end surface ES of the second split core 211B on the second end E2 side is a plane perpendicular to the axial direction.

[0066] In addition, if Figure 2 and Figure 4 As shown, the core assembly 20 further includes another side L2 ( Figure 2 In addition, some of the plurality of insulators are provided with terminals connected to the outside.

[0067] In addition, if Figures 2 to 4 As shown, the split core 211 has a core back 2111 and teeth 2112 protruding radially inward from the core back 2111, and the insulator 22 has a core back covering portion 221 covering the core back 2111 and a tooth covering portion 222 covering the teeth 2112. In addition, the core assembly 20 further includes a coil 23, which is wound around the teeth 2112 of the split core 211 via the insulator 22 on one axial side L1 and the insulator 22 on the other axial side L2.

[0068] (Main Effects of the Present Embodiment)

[0069] According to the pump device 1 of the present embodiment, on one side L1 in the axial direction, the split core located at the first end E1 of a row is set as the first split core 211A, and the split core located at the second end E2 of a row opposite to the first end E1 is set as the second split core 211B, and the area S11 of the end portion of the end surface ES on the first end E1 side of the first split core 211A exposed from the insulator 22 is larger than the area S12 of the end portion of the end surface ES on the second end E2 side of the first split core 211A exposed from the insulator 22, and the area S21 of the end portion of the end surface ES on the second end E2 side of the second split core 211B exposed from the insulator 22 is larger than the area S22 of the end portion of the end surface ES on the second end E2 side of the second split core 211 The end portion on the first end E1 side of the end face ES of B is exposed from the insulator 22 by an area S22. Therefore, it is easy to set a plunger for pressing the end portion on the first end E1 side of the end face ES of the first split iron core 211A and a plunger for pressing the end portion on the second end E2 side of the end face ES of the second split iron core 211B, thereby suppressing the gap between the end portion on the first end E1 side of the first split iron core 211A and the mold and the gap between the end portion on the second end E2 side of the second split iron core 211B and the mold, thereby suppressing resin leakage. As a result, it is possible to suppress the generation of burrs on the end face ES of the iron core 21 that constitutes the assembly reference surface, thereby improving the assembly accuracy of the core assembly 20.

[0070] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned embodiments.

[0071] For example, in the above embodiment, Figure 8 and Fig. 9 As shown, the surface of the first notch portion R1 toward the first end E1 side is formed so that it is closer to the circumferential center of the first split iron core 211A as it gets radially inward, and the surface of the second notch portion R2 toward the second end E2 side is formed so that it is closer to the circumferential center of the second split iron core 211B as it gets radially inward.

[0072] In addition, in the above-mentioned embodiment, on one side L1 in the axial direction, in the insulator 22 formed on the first split iron core 211A, a first notch portion R1 is formed radially outside the end portion on the first end E1 side, and in the insulator 22 formed on the second split iron core 211B, a second notch portion R2 is formed radially outside the end portion on the second end E2 side, but it is not limited to this, and the first notch portion R1 and the second notch portion R2 may be formed radially inside the insulator 22, and a notch portion may be formed in the middle of the insulator 22 in the radial direction, etc.

[0073] In addition, in the above-mentioned embodiment, the area S12 of the end portion on the second end E2 side of the end face ES of the first split iron core 211A exposed from the insulator 22 is equal to the area S31 of the end portion on the first end E1 side of the end face ES of the third split iron core 211C exposed from the insulator 22, and the area S22 of the end portion on the first end E1 side of the end face ES of the second split iron core 211B exposed from the insulator 22 is equal to the area S32 of the end portion on the second end E2 side of the end face ES of the third split iron core 211C exposed from the insulator 22, but it is not limited to this, and the area S12 and the area S31 may not be equal, and the area S22 and the area S32 may not be equal.

[0074] In addition, in the above embodiment, the area S31 of the end portion on the first end E1 side of the end face ES of the third split iron core 211C exposed from the insulator 22 is equal to the area S32 of the end portion on the second end E2 side of the end face ES of the third split iron core 211C exposed from the insulator 22, but this is not limited to this, and the area S31 and the area S32 may not be equal.

[0075] In addition, in the above-mentioned embodiment, the end portion on the first end E1 side of the end face ES of the first split iron core 211A is a plane perpendicular to the axial direction, and the end portion on the second end E2 side of the end face ES of the second split iron core 211B is a plane perpendicular to the axial direction, but it is not limited to this. The end portion on the first end E1 side of the end face ES of the first split iron core 211A may also be inclined relative to the axial direction, and the end portion on the second end E2 side of the end face ES of the second split iron core 211B may also be inclined relative to the axial direction.

[0076] In addition, in the above-mentioned embodiment, on one side L1 in the axial direction, an area S11 of the end portion on the first end E1 side of the end face ES of the first split iron core 211A exposed from the insulator 22 is larger than an area S12 of the end portion on the second end E2 side of the end face ES of the first split iron core 211A exposed from the insulator 22, and an area S21 of the end portion on the second end E2 side of the end face ES of the second split iron core 211B exposed from the insulator 22 is larger than an area S22 of the end portion on the first end E1 side of the end face ES of the second split iron core 211B exposed from the insulator 22, but a similar structure may also be adopted on the other side L2 in the axial direction.

[0077] It should be understood that within the scope of the present invention, various parts in the embodiments can be freely combined, or various parts in the embodiments can be appropriately deformed or omitted.

Claims

1. A core assembly, comprising: An iron core formed by forming a ring shape with a plurality of split iron cores arranged in a row; and a plurality of insulators, each of which is formed on the plurality of split iron cores by molding and partially covers the end surface of one side in the axial direction of the plurality of split iron cores, characterized in that: The split iron core located at a first end of the row is set as a first split iron core, and the split iron core located at a second end of the row opposite to the first end is set as a second split iron core, The area of ​​the end portion of the end surface of the first split core on the first end side exposed from the insulator is larger than the area of ​​the end portion of the end surface of the first split core on the second end side exposed from the insulator. An area of ​​the end portion of the end surface of the second split core on the second end side exposed from the insulator is larger than an area of ​​the end portion of the end surface of the second split core on the first end side exposed from the insulator.

2. The core assembly according to claim 1, characterized in that The split core located between the first end and the second end of the row is set as a third split core, An area where the end portion of the end surface of the third split core on the first end side is exposed from the insulator is equal to an area where the end portion of the end surface of the third split core on the second end side is exposed from the insulator.

3. The core assembly according to claim 2, characterized in that: The area of ​​the end portion of the end surface of the first split core on the second end side exposed from the insulator is equal to the area of ​​the end portion of the end surface of the third split core on the first end side exposed from the insulator. An area where the end portion of the end surface of the second split core on the first end side is exposed from the insulator is equal to an area where the end portion of the end surface of the third split core on the second end side is exposed from the insulator.

4. The core assembly according to claim 1, characterized in that: The split iron core comprises: a core back; and teeth protruding radially inward from the core back. The insulator comprises: a core back covering portion covering the core back; and a tooth covering portion covering the teeth. The insulator formed on the first split core has a first notch formed radially outward of an end portion on the first end side. The insulator formed in the second split core has a second notch portion formed radially outside an end portion on the second end side.

5. The core assembly according to claim 4, characterized in that: The surface of the first notch portion facing the first end side is formed so as to be closer to the circumferential center of the first split core as it moves radially inward. A surface of the second notch portion facing the second end side is formed so as to be closer to the circumferential center of the second split core as it moves radially inward.

6. The core assembly according to claim 1, characterized in that: The end portion of the first end side of the end surface of the first split core is a plane perpendicular to the axial direction, An end portion of the end surface of the second split core on the second end side is a flat surface perpendicular to the axial direction.

7. A motor, characterized in that: include: A stator, the stator comprising the core assembly according to any one of claims 1 to 6; as well as A rotor rotates relative to the stator.

8. A pump device, characterized in that: include: The motor according to claim 7; as well as An impeller is connected to the rotor of the motor.

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