Iron core, motor stator, motor rotor and motor

Abstract

The utility model provides an iron core, a motor stator, a motor rotor and a motor, the iron core comprises a plurality of connecting blocks, each connecting block comprises a main body part, a first connecting part and a second connecting part, and the first connecting part and the second connecting part are arranged on the same side of the main body part. One end of the first connecting part and one end of the second connecting part are connected with the two ends of the main body part respectively, the first connecting part of each connecting block is connected with the second connecting part of another adjacent connecting block to jointly form a wrapping post of the iron core, and the main body parts of all the connecting blocks jointly form a yoke part of the iron core. Through the connecting blocks, the manufacturing difficulty and cost of the iron core can be effectively reduced, follow-up maintenance is facilitated, the service life of the iron core is prolonged, meanwhile, tight connection between the connecting blocks is guaranteed, the situation that a narrow area of a yoke part of a connecting motor is loosened is avoided through the connecting wrapping posts, and the use stability of the iron core is improved.

Description

Technical Field

[0001] The present application relates to the field of motors, and in particular to an iron core, a motor stator, a motor rotor, and a motor. Background Art

[0002] As an indispensable electrical device in modern industry and life, electric motors convert electrical energy into mechanical energy. The iron core is a crucial component of a motor, encompassing both the stator and rotor. Therefore, the structural design of the core significantly impacts the motor's performance and efficiency.

[0003] However, the firmness of the iron core with a block structure in the related art needs to be improved; at the same time, the manufacturing cost of the iron core needs to be reduced. Utility Model Content

[0004] To address the deficiencies of the prior art, the present application provides an iron core, a motor stator, a motor rotor, and a motor.

[0005] The technical solution of this application is as follows:

[0006] In a first aspect, the present application provides an iron core comprising a plurality of connecting blocks, each connecting block comprising a main body, a first connecting part and a second connecting part, the first connecting part and the second connecting part being arranged on the same side of the main body, one end of the first connecting part and one end of the second connecting part being connected to the two ends of the main body respectively, the first connecting part of each connecting block being connected to the second connecting part of another adjacent connecting block to jointly form a winding column of the iron core, and the main bodies of all the connecting blocks jointly form a yoke of the iron core.

[0007] In one embodiment, the connecting block is further provided with a first splicing groove, a second splicing groove, a third splicing groove and a fourth splicing groove; the first splicing groove is provided at the position where the first connecting part is connected to the main body, the second splicing groove is provided at the position where the second connecting part is connected to the main body, the third splicing groove is provided on the outside of the end of the first connecting part away from the main body, and the fourth splicing groove is provided on the outside of the end of the second connecting part away from the main body; the first splicing groove of each connecting block is connected to the second splicing groove of another adjacent connecting block to form a first groove, and the third splicing groove of each connecting block is connected to the fourth splicing groove of another adjacent connecting block to form a second groove.

[0008] In one embodiment, the connecting block also includes: a first boot, the first end of the first boot is connected to the end of the first connecting part away from the main body; a second boot, the first end of the second boot is connected to the end of the second connecting part away from the main body, and the second end of the second boot is spaced apart from the second end of the first boot.

[0009] In one embodiment, the first connecting portion and the second connecting portion are formed on the inner side of the yoke, or the first connecting portion and the second connecting portion are formed on the outer side of the yoke, wherein, with the center of the iron core as a reference point, the outer side of the yoke is a side whose distance from the center is greater than the distance from the yoke to the center; the inner side of the yoke is a side whose distance from the center is less than the distance from the yoke to the center;

[0010] In one embodiment, when the first connecting portion and the second connecting portion are disposed on the inner side of the yoke, the main body is an arc-shaped column, and the outer arc length of the main body is greater than the inner arc length.

[0011] In one embodiment, when the first connecting portion and the second connecting portion are disposed on the outside of the yoke, the main body is an arc-shaped column, and the outer arc length of the main body is smaller than the inner arc length.

[0012] In one embodiment, the first connecting portion of the connecting block is provided with a clamping portion, and the second connecting portion of the connecting block is provided with a receiving groove. The receiving groove of each connecting block is used to receive the clamping portion of another adjacent connecting block.

[0013] A second aspect of the present application provides a motor stator, comprising an insulating frame and a winding. The motor stator further comprises the iron core described in any one of the above embodiments.

[0014] A third aspect of the present application provides a motor rotor, comprising a motor shaft and a bearing, the motor rotor further comprising the iron core described in any one of the above embodiments.

[0015] A fourth aspect of the present application provides a motor, comprising a housing, a fan, a controller, a motor stator and a motor rotor, wherein the motor stator and / or the motor rotor comprises any of the above-mentioned iron cores.

[0016] The technical solution of this application has at least the following technical effects or advantages:

[0017] The present application arranges the iron core into several connecting blocks, each connecting block includes a main body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged on the same side of the main body, one end of the first connecting part and one end of the second connecting part are respectively connected to the two ends of the main body, the first connecting part of each connecting block is connected to the second connecting part of another adjacent connecting block to jointly form a winding column of the iron core, and the main bodies of all connecting blocks jointly form the yoke of the iron core.

[0018] In this way, the iron core provided by the present application, on the one hand, will be connected to form the iron core by connecting blocks, which can effectively reduce the mold volume, improve the speed of iron core production and increase the utilization rate of silicon steel sheets, and can effectively reduce the manufacturing cost of the iron core; on the other hand, the first connecting part and the second connecting part between the connecting blocks are connected to each other to form a winding column, which can effectively improve the firmness of the iron core and reduce the probability of loosening or breakage caused by connection in the narrow area of ​​the yoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a combination of an iron core provided in one embodiment of the present application.

[0020] Figure 2 yes Figure 1 Schematic diagram of the structure of a single connection block.

[0021] Figure 3 yes Figure 1 Enlarged detail of the part indicated by circle A.

[0022] Figure 4 This is another schematic diagram of the combination of the iron core provided in one embodiment of the present application.

[0023] Figure 5 yes Figure 4 Schematic diagram of the structure of a single connection block.

[0024] Figure 6 This is a schematic diagram of a motor stator provided in one embodiment of the present application.

[0025] Figure 7 This is a schematic diagram of a motor rotor provided in one embodiment of the present application. DETAILED DESCRIPTION

[0026] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. For example, the terms "upper," "lower," "front," and "back" used below to indicate orientation or positional relationships are based solely on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of this application. They do not indicate or imply that the device or element referred to must have a specific orientation or be constructed or operated in a specific orientation. Therefore, they should not be construed as limiting this application.

[0027] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0028] As an indispensable electrical device in modern industry and life, electric motors convert electrical energy into mechanical energy. The iron core is a crucial component of a motor, encompassing both the stator and rotor. Therefore, the structural design of the core significantly impacts the motor's performance and efficiency.

[0029] However, the firmness of the block-type iron core in the related art needs to be improved; at the same time, the manufacturing cost of the iron core needs to be reduced. For example, for the block-type iron core, the connection method often adopted in the related art is to connect at the yoke. However, the thickness of the yoke is relatively thin, which may cause this position to become the weak link of the entire structure. When subjected to external forces such as squeezing, collision or vibration, this position is prone to deformation or fracture first, thereby affecting the firmness and stability of the entire iron core. At the same time, if a whole iron core structure is used, the entire mold needs to be made, which makes it difficult to manufacture large iron cores. Moreover, as the scale of the motor increases, the complexity of the iron core manufacturing process and the production cost will increase. When a fault occurs, the difficulty and cost of maintenance will also increase.

[0030] Based on this, the present application provides an iron core, a motor stator, a motor rotor and a motor, which are beneficial to improving the firmness of the iron core and can effectively reduce the manufacturing cost of the iron core.

[0031] Next, an iron core provided in an embodiment of the present application is further introduced.

[0032] Please also refer to Figure 1 and Figure 2 , shows a schematic diagram of a combination of the core provided by an embodiment of the present application. Figure 1 As shown, the present application provides an iron core 10, including a plurality of connecting blocks 100, each connecting block 100 including a main body 101, a first connecting part 102A and a second connecting part 102B, the first connecting part 102A and the second connecting part 102B are arranged on the same side of the main body 101, one end of the first connecting part 102A and one end of the second connecting part 102B are respectively connected to the two ends of the main body 101, the first connecting part 102A of each connecting block 100 is connected to the second connecting part 102B of another adjacent connecting block 100 to jointly form a winding column of the iron core 10, and the main bodies 101 of all connecting blocks 100 jointly form the yoke 101A of the iron core 10.

[0033] In some embodiments, the iron core 10 can be made by stacking silicon steel sheets, or by stacking sheets made of alloy materials such as iron-nickel-molybdenum alloy or other metal materials. In other words, the connecting block 100 can be made by stacking multiple sheets, and from the sheet level, the main body 101, the first connecting part 102A and the second connecting part 102B are all in sheet form. The connecting blocks 100 formed by stacking multiple sheets are connected to each other so that the formed iron core 10 is cylindrical. For example, the iron core 10 can be roughly cylindrical, or it can be other polyhedral columns such as hexagonal prisms. This application does not limit the specific materials used to make the iron core 10 and the specific shapes formed. It is understandable that, corresponding to the different columns presented by the iron core 10, the main body 101 of the connecting block 100 together forming the yoke 101A of the iron core 10 can also be of different shapes, for example, it can be a ring, or it can be other shapes such as a square, pentagon or hexagon. This application does not limit the specific shape of the yoke 101A formed, and relevant technical personnel can choose according to actual conditions.

[0034] In some embodiments, the connecting blocks 100 can be connected by plugging, or by other methods for connection and reinforcement, such as welding or adhesive connection. This application does not limit the specific method of connecting the connecting blocks 100.

[0035] It can be understood that the iron core 10 provided in the present application is connected to the second connecting part 102B of another adjacent connecting block 100 through the first connecting part 102A of each connecting block 100 to jointly form the winding column 103 of the iron core 10, which is convenient for dispersing the mechanical stress on the iron core 10. Compared with the connection method in the narrow area of ​​the yoke 101A, it can reduce the loosening or breakage of the iron core 10, effectively improve the firmness of the iron core 10, and improve the stability of the iron core 10 during use.

[0036] Furthermore, during the manufacturing process, the present application simplifies the module manufacturing process by dividing the entire iron core 10 into several completely identical and splicable blocks, and changes the manufacturing process from manufacturing the entire mold to manufacturing a mold for a single connecting block 100, thereby reducing the manufacturing difficulty and cost. Even for a large iron core 10, a connecting block 100 that meets the requirements can be quickly produced, which is convenient for better adapting to the requirements of different working environments and equipment for motors, and can effectively improve the applicability and flexibility of the motor. At the same time, the use of a mold for manufacturing a single connecting block 100 can effectively reduce the waste of materials used to make the iron core 10 and improve the utilization rate of the materials. In addition, during the subsequent maintenance and replacement process, only the single connecting block 100 that has failed needs to be replaced, without replacing the entire iron core 10, which greatly reduces the maintenance cost of the iron core 10 and can effectively extend the service life of the motor.

[0037] like Figure 2As shown, the connecting block 100 is further provided with a first splicing groove 104A, a second splicing groove 104B, a third splicing groove 104C and a fourth splicing groove 104D. Among them, the first splicing groove 104A is provided on the outside of the position where the first connecting portion 102A is connected to the main body 101, the second splicing groove 104B is provided on the outside of the position where the second connecting portion 102B is connected to the main body 101, the third splicing groove 104C is provided on the outside of the end of the first connecting portion 102A away from the main body 101, and the fourth splicing groove 104D is provided on the outside of the end of the second connecting portion 102B away from the main body 101. Figure 1 As shown, the first joint groove 104A of each connecting block 100 is connected to the second joint groove 104B of another adjacent connecting block 100 to form a first groove 105A, and the third joint groove 104C of each connecting block 100 is connected to the fourth joint groove 104D of another adjacent connecting block to form a second groove 105B. The shape of the second groove 105B is substantially the same as that of the first groove 105A. Figure 3 , Figure 3 for Figure 1 An enlarged detail view of the first groove 105A in the middle circle A. In some embodiments, the first groove 105A and the second groove 105B can be V-shaped grooves, square grooves or grooves of other shapes. The present application does not limit the spatial characteristics of the grooves formed by splicing, such as the shape, size and depth. Relevant technicians can make adjustments when making molds according to different application environments and equipment. In some embodiments, the first groove 105A and the second groove 105B are used to accommodate adhesive materials to reinforce the iron core. For example, the adhesive material can be solder or adhesive. In this way, the iron core 10 provided in the present application can effectively ensure the stability of the iron core 10 during use by forming the first groove 105A and the second groove 105B, reduce the probability of the iron core disintegrating due to high-speed rotation during use, and reduce deformation caused by mechanical stress or thermal stress.

[0038] In addition, cogging torque is the circumferential torque generated by the interaction between the permanent magnets and the armature core when the armature winding is not energized. This torque varies with the rotor position. By providing first and second grooves 105A, 105B as avoidance grooves, the present application can effectively reduce cogging torque and torque fluctuations, thereby ensuring stable operation of the motor. Furthermore, by providing first and second grooves 105A, 105B, eddy current paths can be reduced, magnetic flux leakage can be reduced, and the flow channel for cooling oil can be increased, thereby improving the cooling effect of the cooling oil on the core 10.

[0039] like Figure 2As shown, the connecting block 100 further includes: a first boot 108A and a second boot 108B. The first end of the first boot 108A is connected to the end of the first connecting portion 102A away from the main body 101; the first end of the second boot 108B is connected to the end of the second connecting portion 102B away from the main body 101, and the second end of the second boot 108B is spaced apart from the second end of the first boot 108A. In some embodiments, the first boot 108A is a cylinder that gradually becomes thinner from the first end to the second end, and the second boot 108B is a cylinder that gradually becomes thinner from the first end to the second end. The first boot 108A and the second boot 108B have substantially the same shape. In some embodiments, a curved surface is formed on the side of the first boot 108A and the second boot 108B away from the main body 101. The curvature of the second boot 108B and the first boot 108A is substantially the same as that of the yoke 101A.

[0040] It is understood that a winding space 107 is formed between the main body 101, the first connecting portion 102A, and the second connecting portion 102B of the connecting block 100. The more blocks the core 10 is divided into, the more winding posts there are, and the smaller the winding space 107 is. Conversely, the fewer blocks the core 10 is divided into, the fewer winding posts there are, and the larger the winding space 107 is. This application does not limit the size of the winding space 107. By providing the winding space 107, relevant technicians can flexibly control the winding of the coils, reduce mutual interference between coils, and thus ensure the stable use of the motor.

[0041] See also Figure 1 In some embodiments, the first connecting portion 102A and the second connecting portion 102B are formed on the inner side of the yoke 101A. Taking the center O of the core 10 as a reference point, the outer side of the yoke 101A is the side whose distance from the center is greater than the distance from the yoke 101A to the center; the inner side of the yoke 101A is the side whose distance from the center is less than the distance from the yoke 101A to the center. Figure 1 As shown, the first connecting portion 102A and the second connecting portion 102B are both within the circular ring formed by the yoke 101A.

[0042] Specifically, if Figure 1 As shown, when the first connecting portion 102A and the second connecting portion 102B are formed on the inner side of the yoke 101A, the main body 101 is an arc-shaped cylinder, and the outer arc length of the main body 101 is greater than the inner arc length, wherein the side of the yoke 101A that is farther from the first boot 108A and / or the second boot 108B is the outer side of the main body 101, and the side of the yoke 101A that is closer to the first boot 108A and / or the second boot 108B is the inner side of the main body 101.

[0043] See also Figure 4 , Figure 4 This is another schematic diagram of the iron core 10 provided in this application. Figure 5 yes Figure 4 The structural diagram of a single connecting block 100 in the embodiment is similar to that in the above embodiment, and the corresponding parts can be referred to the corresponding description of the above embodiment, which will not be described in detail here. Figure 4 In other embodiments, the first connecting portion 102A and the second connecting portion 102B are formed on the outside of the yoke 101A. Figure 4 and Figure 5 When the first connecting portion 102A and the second connecting portion 102B are formed on the outside of the yoke 101A, the main body 101 is an arc-shaped column, and the outer arc length of the main body 101 is smaller than the inner arc length.

[0044] In some embodiments, please refer again to Figure 2 The first connecting portion 102A of the connecting block 100 is provided with a snap-fit ​​portion 106A, and the second connecting portion 102B of the connecting block is provided with a receiving groove 106B. The receiving groove 106B of each connecting block 100 is used to receive the snap-fit ​​portion 106A of another adjacent connecting block 100. The snap-fit ​​portion 106A can be a square protrusion, a trapezoidal protrusion, or a protrusion of another shape, and the receiving groove 106B is a groove corresponding to the shape of the snap-fit ​​portion 106A. This application does not limit the specific shapes of the snap-fit ​​portion 106A and the receiving groove 106B.

[0045] Correspondingly, an embodiment of the present application also provides a motor stator. Figure 6 This is a schematic diagram of a motor stator provided in one embodiment of the present application. Figure 6 As shown, the motor stator 40 includes an insulating frame 20 and a winding 30. The motor stator 40 also includes the iron core 10 described in any of the above embodiments. For the parts that are the same or corresponding to the previous embodiment, please refer to the corresponding description of the previous embodiment and will not be described in detail below.

[0046] Specifically, the motor stator 40 is the fixed part of the motor, which is used to generate a magnetic field. In the motor stator 40, the insulating skeleton 20 plays the role of fixing and supporting the internal parts. It can be made of materials such as cast iron or cast steel. It can not only protect the coil from external factors such as moisture, dust and chemicals, but also enhance the mechanical strength of the motor. The winding 30 is a structure in which a conductive coil is wound on the iron core 10 according to a certain rule and method. It is used to generate a magnetic field after power is turned on. Depending on the number of phases of the power supply, the winding 30 can be divided into single-phase windings and three-phase windings. The iron core 10 is located at the center of the motor. The winding 30 is wound on the iron core 10 to form a complete circuit. The insulating skeleton 20 ensures insulation between the winding 30 and the iron core 10.

[0047] Correspondingly, an embodiment of the present application also provides a motor rotor. Figure 7This is a schematic diagram of a motor rotor provided by an embodiment of the present application. Figure 7 As shown, the motor rotor 50 includes a motor shaft 70 and a bearing 60. The motor rotor 70 also includes the iron core 10 described in any of the above embodiments. For the parts that are the same or corresponding to the previous embodiment, please refer to the corresponding description of the previous embodiment and will not be described in detail below.

[0048] Specifically, the motor rotor 50 is the rotating part of the motor, which is used to realize the conversion of electrical energy into mechanical energy through the principle of electromagnetic induction, thereby driving the load to rotate. In the motor rotor 50, the motor shaft 70 is used to transmit torque and support the rotation of the rotor, and can be made of steel or alloy materials. The bearing 60 is a component used to support the motor shaft 70 and reduce friction, and can be a ball bearing or a sliding bearing type. The motor shaft 70 passes through the middle hole of the iron core 10 and is connected to the iron core 10. One end or both ends of the motor shaft 70 can extend out of the iron core 10 to connect to the drive device or support component of the motor. The bearing 60 is installed at the support part of the motor shaft 70 to reduce friction and wear.

[0049] Accordingly, an embodiment of the present application further provides a motor, comprising a housing, a fan, a controller, a motor stator 40, and a motor rotor 50. The motor stator 40 comprises the iron core 10 described in any of the aforementioned embodiments, and the motor rotor 50 comprises the iron core 10 described in any of the aforementioned embodiments; alternatively, the motor stator 40 comprises the iron core 10 described in any of the aforementioned embodiments, or the motor rotor 50 comprises the iron core 10 described in any of the aforementioned embodiments. For portions identical or corresponding to the previous embodiment, reference may be made to the corresponding description of the preceding embodiment and will not be repeated in detail below.

[0050] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should know that this application is not limited to the described order of actions, because according to this application, certain steps can be performed in other orders or simultaneously.

[0051] The above embodiments are described in the form of preferred embodiments of the present application and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements made to the technical solutions of the present application by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present application.

Claims

1. An iron core, characterized in that: include: A plurality of connecting blocks, each of the connecting blocks includes a main body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged on the same side of the main body, one end of the first connecting part and one end of the second connecting part are respectively connected to the two ends of the main body, the first connecting part of each connecting block is connected to the second connecting part of another adjacent connecting block to jointly form the winding column of the iron core, and the main bodies of all the connecting blocks jointly form the yoke of the iron core.

2. The iron core according to claim 1, wherein The connecting block is further provided with a first splicing groove, a second splicing groove, a third splicing groove and a fourth splicing groove; The first splicing groove is provided at a position where the first connecting portion is connected to the main portion, the second splicing groove is provided at a position where the second connecting portion is connected to the main portion, the third splicing groove is provided on an outer side of an end of the first connecting portion away from the main portion, and the fourth splicing groove is provided on an outer side of an end of the second connecting portion away from the main portion; The first splicing groove of each connecting block is connected to the second splicing groove of another adjacent connecting block to form a first groove, and the third splicing groove of each connecting block is connected to the fourth splicing groove of another adjacent connecting block to form a second groove.

3. The iron core according to claim 1, wherein The connecting block also includes: a first boot portion, wherein a first end of the first boot portion is connected to an end of the first connecting portion away from the main body portion; The second boot portion has a first end connected to an end of the second connecting portion away from the main body portion, and a second end of the second boot portion is spaced apart from the second end of the first boot portion.

4. The iron core according to claim 3, wherein The first connecting portion and the second connecting portion are formed on the inner side of the yoke, or the first connecting portion and the second connecting portion are formed on the outer side of the yoke, wherein, with the center of the iron core as a reference point, the outer side of the yoke is the side whose distance from the center is greater than the distance from the yoke to the center; the inner side of the yoke is the side whose distance from the center is less than the distance from the yoke to the center.

5. The iron core according to claim 4, wherein When the first connecting portion and the second connecting portion are disposed on the inner side of the yoke, the main body is an arc-shaped column, and the outer arc length of the main body is greater than the inner arc length.

6. The iron core according to claim 4, wherein: When the first connecting portion and the second connecting portion are disposed on the outer side of the yoke, the main body is an arc-shaped column, and the outer arc length of the main body is smaller than the inner arc length.

7. The iron core according to claim 1, wherein The first connecting portion of the connecting block is provided with a clamping portion, and the second connecting portion of the connecting block is provided with a receiving groove. The receiving groove of each connecting block is used to receive the clamping portion of another adjacent connecting block.

8. A motor stator, comprising an insulating frame and a winding, characterized in that: The motor stator further comprises an iron core as claimed in any one of claims 1 to 7.

9. A motor rotor, comprising a motor shaft and a bearing, characterized in that: The motor rotor further comprises an iron core as claimed in any one of claims 1 to 7.

10. A motor comprising a housing, a fan, a controller, a motor stator and a motor rotor, characterized in that: The motor stator and / or the motor rotor comprises the iron core according to any one of claims 1 to 7.

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