Motor rotor sheet

Abstract

The utility model discloses a motor rotor sheet, which comprises a first rotor sheet, a second rotor sheet and a plurality of third rotor sheets, the middle parts of the first rotor sheet, the second rotor sheet and the plurality of third rotor sheets are all provided with shaft holes, and the first rotor sheet, the second rotor sheet and the plurality of third rotor sheets are all provided with a plurality of winding grooves. Heat dissipation plates are fixedly connected to the interiors of the multiple winding grooves, the heat dissipation plates are located in the middles of the winding grooves, the ends, extending out of the winding grooves, of the multiple heat dissipation plates are fixedly connected with arc-shaped plates, and wire penetrating openings are formed between the multiple arc-shaped plates and the first rotor piece, between the multiple arc-shaped plates and the second rotor piece and between the multiple arc-shaped plates and the multiple third rotor pieces. The first rotor sheet, the second rotor sheet and the plurality of third rotor sheets are all provided with heat dissipation through grooves, so that the heat dissipation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric motor rotor blade technology, and more specifically, to an electric motor rotor blade. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque, serving as a power source for electrical appliances or various machines. The stationary part of an electric motor is called the stator, on which pairs of DC-excited stationary main magnetic poles are installed. The rotating part is called the rotor, on which rotor windings are installed. When energized, these windings generate an induced electromotive force, which acts as a rotating magnetic field, and then produces electromagnetic torque for energy conversion. The rotor of an electric motor is composed of multiple rotor laminations stacked together.

[0003] Existing motor rotors typically have a large amount of enameled wire wound inside the winding slots on multiple motor rotor plates. Due to the large number of enameled wires wound inside the winding slots, the heat dissipation effect is relatively poor. In addition, the surface of existing motor rotor plates is relatively smooth. Since the motor rotor has multiple rotor plates stacked together, it is not convenient to align the winding slots on the multiple motor rotor plates, which affects the efficiency of its installation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides an electric motor rotor blade to solve the technical problem of relatively poor heat dissipation mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an electric motor rotor lamination, comprising a first rotor lamination, a second rotor lamination, and multiple third rotor laminations. Each of the first, second, and multiple third rotor laminations has a shaft hole in its center. Each of the first, second, and multiple third rotor laminations has multiple winding slots. A heat dissipation plate is fixedly connected inside each of the multiple winding slots, with the heat dissipation plate located in the middle of the winding slot. An arc-shaped plate is fixedly connected to one end of each of the multiple heat dissipation plates extending outside the winding slot. A wire-passing opening is provided between each of the multiple arc-shaped plates and the first, second, and multiple third rotor laminations. Heat dissipation channels are provided on each of the first, second, and multiple third rotor laminations, improving their heat dissipation effect.

[0008] The present invention is further configured such that the first rotor plate has a plurality of first positioning grooves on its side end, the second rotor plate has a plurality of first positioning posts uniformly fixedly connected to its side end, the plurality of third rotor plates have a plurality of second positioning grooves uniformly arranged on their side ends, and the plurality of second positioning posts are uniformly arranged on the other end of the plurality of third rotor plates, which facilitates the positioning of the first rotor plate, the second rotor plate and the plurality of third rotor plates, and facilitates the alignment of the plurality of winding grooves on the first rotor plate, the second rotor plate and the plurality of third rotor plates.

[0009] The present invention is further configured such that each of the plurality of first positioning grooves and second positioning grooves is provided with a first inclined edge.

[0010] The present invention is further configured such that the side ends of the plurality of first positioning posts and the plurality of second positioning posts are provided with second inclined edges, which facilitates the insertion of the first positioning posts and the second positioning posts into the interior of the first positioning groove and the second positioning groove.

[0011] The present invention is further provided with a wire-blocking protrusion at the end of each of the multiple winding grooves away from the shaft hole to prevent the enameled wire from sliding out of the inside of the winding groove.

[0012] The present invention is further configured such that the corner of the wire-blocking protrusion is rounded to avoid damage to the enameled wire.

[0013] The present invention is further configured such that a keyway is provided on the side end of the shaft hole to ensure that the motor shaft drives the first rotor plate, the second rotor plate and multiple third rotor plates to rotate.

[0014] The present invention is further configured such that the plurality of winding grooves are evenly distributed in a circular array about the central axis of the shaft hole.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a motor rotor blade with the following advantages:

[0017] 1. By setting multiple heat sinks and arc-shaped plates, the heat generated by the motor rotor during operation is transferred to the heat sinks and arc-shaped plates. During the rotation of the motor, airflow circulates outside the multiple heat sinks and arc-shaped plates, which facilitates the removal of heat. At the same time, multiple heat dissipation slots are set in the first rotor plate, the second rotor plate, and multiple third rotor plates. The rotation of the cooling fan blades on the motor causes air to circulate inside the multiple heat dissipation slots, thereby increasing the heat dissipation area of ​​the motor rotor and improving its heat dissipation effect.

[0018] 2. Multiple third rotor plates are stacked together, and multiple second positioning posts on the third rotor plates are inserted into the multiple second positioning slots on adjacent third rotor plates. Then, a first rotor plate is stacked on one side of the multiple third rotor plates, and multiple second positioning posts on the left outer third rotor plate are inserted into the multiple first positioning slots on the first rotor plate. Then, a second rotor plate is stacked on the other side of the multiple third rotor plates, and multiple first positioning posts on the second rotor plate are inserted into the multiple second positioning slots on adjacent third rotor plates. Through the cooperation of multiple first positioning slots, multiple first positioning posts, multiple second positioning slots and multiple second positioning posts, the first rotor plate, the second rotor plate and the multiple third rotor plates are neatly stacked together, improving the stacking efficiency.

[0019] 3. By providing a wire-blocking protrusion at the side end of the winding slot, the enameled wire can be prevented from slipping out of the inside of the winding slot, ensuring the stability of the enameled wire wound inside the winding slot during the high-speed rotation of the motor rotor. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front structure of a motor rotor lamination according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the first rotor blade in this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the second rotor plate in this utility model;

[0023] Figure 4 This is a schematic diagram of the third rotor blade structure in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the other side of the third rotor blade in this utility model.

[0025] In the diagram: 1. First rotor blade; 2. Second rotor blade; 3. Third rotor blade; 4. Shaft hole; 5. Winding groove; 6. Heat sink; 7. Arc plate; 8. Wire through hole; 9. Heat dissipation channel; 10. First positioning groove; 11. First positioning post; 12. Second positioning groove; 13. Second positioning post; 14. First bevel; 15. Second bevel; 16. Wire blocking protrusion; 17. Keyway. Detailed Implementation

[0026] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 An electric motor rotor lamination includes a first rotor lamination 1, a second rotor lamination 2, and multiple third rotor laminations 3. Each of the first rotor lamination 1, the second rotor lamination 2, and the multiple third rotor laminations 3 has a shaft hole 4 in its center. A keyway 17 is provided at the side end of the shaft hole 4 to ensure that the motor shaft drives the first rotor lamination 1, the second rotor lamination 2, and the multiple third rotor laminations 3 to rotate. Each of the first rotor lamination 1, the second rotor lamination 2, and the multiple third rotor laminations 3 has multiple winding grooves 5. These winding grooves 5 are evenly distributed in a circular array about the central axis of the shaft hole 4. A heat sink 6 is fixedly connected inside each of the multiple winding grooves 5, located in the middle of the winding groove 5. An arc-shaped plate 7 is fixedly connected to one end of each heat sink 6 extending outside the winding groove 5. A wire-passing opening 8 is provided between each of the multiple arc-shaped plates 7 and the first rotor lamination 1, the second rotor lamination 2, and the multiple third rotor laminations 3. A heat dissipation channel 9 is provided on each of the first rotor lamination 1, the second rotor lamination 2, and the multiple third rotor laminations 3.

[0030] Specifically, by setting multiple heat sinks and arc plates 7, the heat generated by the motor rotor during operation is transferred to the heat sinks and arc plates 7. During the rotation of the motor, airflow circulates outside the multiple heat sinks and arc plates 7, which facilitates the removal of heat. At the same time, multiple heat dissipation slots 9 are set in the first rotor plate 1, the second rotor plate 2 and multiple third rotor plates 3. The rotation of the cooling fan blades on the motor causes air to circulate inside the multiple heat dissipation slots 9, thereby increasing the heat dissipation area of ​​the motor rotor and improving its heat dissipation effect.

[0031] Please see Figures 2-5The first rotor plate 1 has multiple first positioning grooves 10 on its side end, the second rotor plate 2 has multiple first positioning posts 11 uniformly fixedly connected to its side end, the multiple third rotor plates 3 have multiple second positioning grooves 12 uniformly arranged on their side ends, and the multiple third rotor plates 3 have multiple second positioning posts 13 uniformly arranged on their other ends, which facilitates the positioning of the first rotor plate 1, the second rotor plate 2 and the multiple third rotor plates 3. The multiple first positioning grooves 10 and the multiple second positioning grooves 12 are each provided with a first inclined side 14, and the multiple first positioning posts 11 and the multiple second positioning posts 13 are each provided with a second inclined side 15, which facilitates the insertion of the first positioning posts 11 and the second positioning posts 13 into the interior of the first positioning grooves 10 and the second positioning grooves 12.

[0032] Specifically, multiple third rotor plates 3 are stacked together, and multiple second positioning posts 13 on the third rotor plates 3 are respectively inserted into the interiors of multiple second positioning slots 12 on adjacent third rotor plates 3. Then, a first rotor plate 1 is stacked on one side of the multiple third rotor plates 3, and multiple second positioning posts 13 on the left outer third rotor plate 3 are inserted into the interiors of multiple first positioning slots 10 on the first rotor plate 1. Then, a second rotor plate 2 is stacked on the other side of the multiple third rotor plates 3, and multiple first positioning posts 11 on the second rotor plate 2 are respectively inserted into the interiors of multiple second positioning slots 12 on adjacent third rotor plates 3. Through the cooperation of multiple first positioning slots 10, multiple first positioning posts 11, multiple second positioning slots 12 and multiple second positioning posts 13, the first rotor plate 1, the second rotor plate 2 and the multiple third rotor plates 3 are neatly stacked together, improving the stacking efficiency.

[0033] Please see Figures 2-5 Each of the multiple winding grooves 5 has a wire-blocking protrusion 16 at the end away from the shaft hole 4. The corners of the wire-blocking protrusion 16 are rounded to avoid damage to the enameled wire.

[0034] Specifically, by providing a wire-blocking protrusion 16 at the side end of the winding groove 5, the enameled wire can be prevented from slipping out of the inside of the winding groove 5, ensuring the stability of the enameled wire wound inside the winding groove 5 during the high-speed rotation of the motor rotor.

[0035] In summary, when using the overall equipment:

[0036] Multiple third rotor plates 3 are stacked together, and multiple second positioning posts 13 on the third rotor plates 3 are respectively inserted into the interiors of multiple second positioning slots 12 on adjacent third rotor plates 3. Then, the first rotor plate 1 is stacked on one side of the multiple third rotor plates 3, and multiple second positioning posts 13 on the left outer third rotor plate 3 are inserted into the interiors of multiple first positioning slots 10 on the first rotor plate 1. Then, the second rotor plate 2 is stacked on the other side of the multiple third rotor plates 3, and multiple first positioning posts 11 on the second rotor plate 2 are respectively inserted into the interiors of multiple second positioning slots 12 on adjacent third rotor plates 3, so that the first rotor plate 1, the second rotor plate 2 and the multiple third rotor plates 3 are neatly stacked together.

[0037] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electric motor rotor sheet comprising a first rotor sheet (1), a second rotor sheet (2) and a plurality of third rotor sheets (3), characterized in that: The first rotor plate (1), the second rotor plate (2) and the plurality of third rotor plates (3) are provided with shaft holes (4) in the middle. The first rotor plate (1), the second rotor plate (2) and the plurality of third rotor plates (3) are provided with a plurality of winding grooves (5). The interior of the plurality of winding grooves (5) is fixedly connected with heat sinks (6). The heat sinks (6) are located in the middle of the winding grooves (5). The ends of the plurality of heat sinks (6) extending to the outside of the winding grooves (5) are fixedly connected with arc plates (7). The plurality of arc plates (7) and the first rotor plate (1), the second rotor plate (2) and the plurality of third rotor plates (3) are provided with wire through holes (8). The first rotor plate (1), the second rotor plate (2) and the plurality of third rotor plates (3) are provided with heat dissipation through grooves (9).

2. The motor rotor laminations according to claim 1, characterized in that: The first rotor plate (1) has a plurality of first positioning grooves (10) on its side end, the second rotor plate (2) has a plurality of first positioning posts (11) uniformly fixedly connected to its side end, the plurality of third rotor plates (3) have a plurality of second positioning grooves (12) uniformly arranged on their side ends, and the other end of the plurality of third rotor plates (3) has a plurality of second positioning posts (13) uniformly arranged.

3. The motor rotor laminations according to claim 2, characterized in that: Each of the first positioning groove (10) and the second positioning groove (12) is provided with a first inclined side (14).

4. The motor rotor laminations according to claim 2, characterized in that: The sides of the plurality of first positioning posts (11) and the plurality of second positioning posts (13) are provided with second inclined edges (15).

5. The motor rotor laminations according to claim 1, characterized in that: Each of the multiple winding grooves (5) has a wire-blocking protrusion (16) at the end away from the shaft hole (4).

6. The motor rotor laminations according to claim 5, characterized in that: The corners of the baffle protrusion (16) are rounded.

7. The motor rotor laminations according to claim 1, characterized in that: A keyway (17) is provided on the side end of the shaft hole (4).

8. The motor rotor laminations according to claim 1, characterized in that: The multiple winding grooves (5) are evenly distributed in a circular array about the central axis of the shaft hole (4).

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