Micromotor stator assembly

Abstract

The utility model relates to the technical field of micromotor stators, and discloses a micromotor stator assembly comprising a stator iron core, the inner wall of the stator iron core is provided with a winding groove, the left and right sides of the stator iron core are provided with positioning grooves, the surface of the stator iron core is provided with an arc-shaped insulation frame in an attached manner, and the arc-shaped insulation frame is provided with a plurality of positioning grooves. A first round hole is formed in the arc-shaped insulating frame, a first bearing is fixedly connected to the inner wall of the first round hole, and a bolt is fixedly connected to the inner wall of the first bearing. According to the utility model, through cooperation of the arc-shaped insulating frame, the first round hole, the first bearing, the bolt, the first positioning plate, the threaded hole, the second positioning plate, the second round hole, the second bearing, the guide column and the chute, a maintainer can loosen the arc-shaped insulating frame, the first positioning plate and the second positioning plate on the stator iron core by rotating the bolt; therefore, the arc-shaped insulating frame on the stator assembly can be conveniently disassembled by maintenance personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of micro motor stators, in particular to a micro motor stator assembly. Background Art

[0002] Micromotors are motors with a diameter less than 160mm or a rated power less than 750mW. Micromotors are often used in control systems or transmission mechanical loads to detect, analyze, amplify, execute or convert electromechanical signals or energy.

[0003] At present, the stator assembly of a micromotor is mainly composed of a stator core, an insulating frame, a heat sink and a heat sink, wherein the insulating frame fixes the heat sink and the heat sink on the stator core, and transfers the heat of the stator core to the heat sink and the heat sink, so that the heat of the stator core can be quickly dissipated. For example, a micromotor stator assembly disclosed in Chinese patent publication No. CN215221847U, however, because the stator core is embedded in the insulating frame, when maintenance personnel remove the insulating frame on the stator core, it is often difficult to separate the stator core from the insulating frame because the stator core is stuck in the insulating frame. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: at present, since the stator core in the stator assembly is embedded and plugged into the insulating frame, when maintenance personnel remove the insulating frame on the stator core, the stator core is often stuck in the insulating frame, which makes it difficult to separate the stator core from the insulating frame, and a micro motor stator assembly is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A micromotor stator assembly comprises a stator core, the inner wall of the stator core is provided with a winding groove, the left and right sides of the stator core are provided with positioning grooves, the surface of the stator core is fitted with an arc-shaped insulating frame, the interior of the arc-shaped insulating frame is provided with a first circular hole, the inner wall of the first circular hole is fixedly connected with a first bearing, the inner wall of the first bearing is fixedly connected with a bolt, the inner wall of the positioning groove is provided with a first positioning plate, the interior of the first positioning plate is provided with a threaded hole, the inner wall of the threaded hole is threadedly connected with the surface of the bolt, the inner wall of the positioning groove is fitted with a second positioning plate, the interior of the second positioning plate is provided with a second circular hole, the inner wall of the second circular hole and the surface of the bolt are fixedly connected with a second bearing, the inner wall of the arc-shaped insulating frame and the side of the second positioning plate are fixedly connected with guide columns, the front and rear sides of the first positioning plate are provided with slide grooves, and the inner wall of the slide groove contacts the surface of the guide column.

[0007] Preferably, an arc-shaped heat sink is fixedly connected to the surface of the arc-shaped insulation frame, and a heat dissipation groove is provided on the surface of the arc-shaped heat sink.

[0008] Preferably, a heat conduction hole is provided inside the arc-shaped insulating frame.

[0009] Preferably, a support plate is fixedly connected to the back of the stator core, a support column is fixedly connected to the front of the support plate, arc grooves are provided on the side surfaces of the first positioning plate and the second positioning plate, and rubber sleeves are fitted on the inner walls of the arc grooves and the surfaces of the support columns.

[0010] Preferably, a circular ring is bonded to the surface of the rubber sleeve, and the front surface of the first positioning plate and the front surface of the second positioning plate are both in contact with the back surface of the circular ring.

[0011] Preferably, the friction force between the rubber sleeve and the support column is greater than the sum of the gravity of the rubber sleeve and the ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The utility model enables maintenance personnel to loosen the arc-shaped insulating frame, the first circular hole, the first bearing, the bolt, the first positioning plate, the threaded hole, the second positioning plate, the second circular hole, the second bearing, the guide column and the slide groove by turning the bolts, thereby facilitating maintenance personnel to disassemble the arc-shaped insulating frame on the stator assembly.

[0014] (2) The utility model makes it possible for the distance between the first positioning plate and the second positioning plate to be fixed by the cooperation of the support plate, the support column, the arc-shaped groove and the rubber sleeve. Therefore, when the stator assembly vibrates, the arc-shaped insulating frame, the first positioning plate and the second positioning plate on the stator core are not easily loosened by the cooperation of the support plate, the support column, the arc-shaped groove and the rubber sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 for Figure 1 Sectional view at the middle BB;

[0018] Figure 4 It is a front view of the stator core in the utility model;

[0019] Figure 5It is a schematic diagram of the interior of the arc-shaped insulating frame in the utility model;

[0020] Figure 6 It is a side view of the first positioning plate in the utility model;

[0021] Figure 7 It is a side view of the second positioning plate in the utility model.

[0022] In the figure: 1. stator core; 2. winding groove; 3. positioning groove; 4. arc-shaped insulating frame; 5. first circular hole; 6. first bearing; 7. bolt; 8. first positioning plate; 9. threaded hole; 10. second positioning plate; 11. second circular hole; 12. second bearing; 13. guide column; 14. slide groove; 15. arc-shaped heat sink; 16. heat dissipation groove; 17. thermal conductive hole; 18. support plate; 19. support column; 20. arc-shaped groove; 21. rubber sleeve; 22. ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Embodiment 1:

[0026] Reference Figure 1-7A micromotor stator assembly includes a stator core 1, an inner wall of the stator core 1 is provided with a winding groove 2, positioning grooves 3 are provided on both the left and right sides of the stator core 1, an arc-shaped insulating frame 4 is provided on the surface of the stator core 1, a first circular hole 5 is provided inside the arc-shaped insulating frame 4, a first bearing 6 is fixedly connected to the inner wall of the first circular hole 5, a bolt 7 is fixedly connected to the inner wall of the first bearing 6, a first positioning plate 8 is provided on the inner wall of the positioning groove 3, a threaded hole 9 is provided inside the first positioning plate 8, the inner wall of the threaded hole 9 is threadedly connected to the surface of the bolt 7, a second positioning plate 10 is provided on the inner wall of the positioning groove 3, a second circular hole 11 is provided inside the second positioning plate 10, a second bearing 12 is fixedly connected to the inner wall of the second circular hole 11 and the surface of the bolt 7, a guide column 13 is fixedly connected to the inner wall of the arc-shaped insulating frame 4 and the side of the second positioning plate 10, the first positioning plate 8 Slide grooves 14 are provided on both the front and rear sides, and the inner wall of the slide groove 14 contacts the surface of the guide column 13. Through the cooperation of the slide groove 14 and the guide column 13, the first positioning plate 8 moves left and right. When the bolt 7 rotates, the distance between the first positioning plate 8 and the second positioning plate 10 can be changed through the cooperation of the bolt 7 and the threaded hole 9. When the distance between the first positioning plate 8 and the second positioning plate 10 is the largest, the first positioning plate 8 and the second positioning plate 10 can be in close contact with the positioning groove 3, and through the cooperation of the first positioning plate 8, the second positioning plate 10 and the positioning groove 3, the arc-shaped insulating frame 4 is clamped on the stator core 1. When the distance between the first positioning plate 8 and the second positioning plate 10 is reduced to the minimum value, the arc-shaped insulating frame 4, the first positioning plate 8 and the second positioning plate 10 on the stator core 1 will become loose, which makes it easy for maintenance personnel to remove the arc-shaped insulating frame 4 from the stator core 1.

[0027] An arc-shaped heat sink 15 is fixedly connected to the surface of the arc-shaped insulating frame 4, and a heat dissipation groove 16 is provided on the surface of the arc-shaped heat sink 15. A heat conduction hole 17 is provided inside the arc-shaped insulating frame 4. The heat dissipation groove 16 can increase the contact area between the arc-shaped heat sink 15 and the air, and the heat of the arc-shaped heat sink 15 can be quickly dissipated. Through the heat conduction hole 17, the heat of the stator core 1 can be quickly transferred to the arc-shaped heat sink 15.

[0028] Embodiment 1:

[0029] Reference Figure 1-4The back of the stator core 1 is fixedly connected with a support plate 18, and the front of the support plate 18 is fixedly connected with a support column 19. The side of the first positioning plate 8 and the side of the second positioning plate 10 are both provided with an arc groove 20. The inner wall of the arc groove 20 and the surface of the support column 19 are both fitted with a rubber sleeve 21. The surface of the rubber sleeve 21 is bonded with a ring 22. The front of the first positioning plate 8 and the front of the second positioning plate 10 are both in contact with the back of the ring 22. The friction between the rubber sleeve 21 and the support column 19 is greater than the sum of the gravity of the rubber sleeve 21 and the ring 22. When the rubber sleeve 21 is sleeved on the support column 19 By cooperating among the support plate 18, the support column 19, the arc groove 20 and the rubber sleeve 21, the distance between the first positioning plate 8 and the second positioning plate 10 cannot be changed. When the stator assembly vibrates, the arc insulating frame 4, the first positioning plate 8 and the second positioning plate 10 on the stator core 1 are not easily loosened by cooperating among the support plate 18, the support column 19, the arc groove 20 and the rubber sleeve 21. At the same time, when the maintenance personnel use tools to clamp the rubber sleeve 21, the ring 22 can prevent the rubber sleeve 21 from being deformed, thereby facilitating the maintenance personnel to put the rubber sleeve 21 on the support column 19.

[0030] In the utility model, when the user assembles the positioning assembly, the user first rotates the bolt 7 to reduce the distance between the first positioning plate 8 and the second positioning plate 10 to a minimum value under the cooperation of the bolt 7 and the threaded hole 9, and then inserts the first positioning plate 8 and the second positioning plate 10 into the positioning groove 3, and rotates the bolt 7 to make the first positioning plate 8 and the second positioning plate 10 closely contact the positioning groove 3, and make the arc-shaped insulating frame 4 closely contact the stator core 1. At this time, the arc-shaped insulating frame 4 can be clamped on the stator core 1 through the cooperation of the first positioning plate 8, the second positioning plate 10 and the positioning groove 3. When the arc-shaped insulating frame 4 needs to be disassembled, the bolt 7 is first rotated to reduce the distance between the first positioning plate 8 and the second positioning plate 10 to a minimum value under the cooperation of the bolt 7 and the threaded hole 9, and the arc-shaped insulating frame 4, the first positioning plate 8 and the second positioning plate 10 on the stator core 1 are loosened. At this time, the arc-shaped insulating frame 4 can be directly removed from the stator core 1.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A micromotor stator assembly, comprising a stator core (1), characterized in that: The inner wall of the stator core (1) is provided with a winding groove (2), the left and right sides of the stator core (1) are provided with positioning grooves (3), the surface of the stator core (1) is fitted with an arc-shaped insulating frame (4), the interior of the arc-shaped insulating frame (4) is provided with a first circular hole (5), the inner wall of the first circular hole (5) is fixedly connected with a first bearing (6), the inner wall of the first bearing (6) is fixedly connected with a bolt (7), the inner wall of the positioning groove (3) is provided with a first positioning plate (8), the interior of the first positioning plate (8) is provided with a threaded hole (9), the threaded hole (9) The inner wall of the arc-shaped insulating frame (4) and the side surface of the second positioning plate (10) are fixedly connected with a guide column (13). The first positioning plate (8) is provided with a slide groove (14) on both the front and rear sides. The inner wall of the slide groove (14) is in contact with the surface of the guide column (13).

2. A micromotor stator assembly according to claim 1, characterized in that: An arc-shaped heat sink (15) is fixedly connected to the surface of the arc-shaped insulation frame (4), and a heat dissipation groove (16) is provided on the surface of the arc-shaped heat sink (15).

3. The micromotor stator assembly according to claim 1, characterized in that: A heat conduction hole (17) is provided inside the arc-shaped insulating frame (4).

4. The micromotor stator assembly according to claim 1, characterized in that: The back side of the stator core (1) is fixedly connected to a support plate (18), the front side of the support plate (18) is fixedly connected to a support column (19), the side surfaces of the first positioning plate (8) and the second positioning plate (10) are both provided with arc-shaped grooves (20), and the inner walls of the arc-shaped grooves (20) and the surfaces of the support columns (19) are both fitted with rubber sleeves (21).

5. The micromotor stator assembly according to claim 4, characterized in that: A circular ring (22) is bonded to the surface of the rubber sleeve (21), and the front surface of the first positioning plate (8) and the front surface of the second positioning plate (10) are both in contact with the back surface of the circular ring (22).

6. The micromotor stator assembly according to claim 5, characterized in that: The friction force between the rubber sleeve (21) and the support column (19) is greater than the sum of the gravity of the rubber sleeve (21) and the circular ring (22).

Images