Motor end cover, motor and electrical equipment

Abstract

The utility model discloses a motor end cover, a motor and electrical equipment, and relates to the technical field of motors, the motor end cover comprises a bearing part, a connecting part and an assembling part, and the bearing part is provided with a bearing cavity with a central axis; the connecting part is arranged around the periphery of the bearing part and connected with the bearing part, and the connecting part is provided with a convex hull structure; the assembling part is connected to the connecting part and arranged around the periphery of the connecting part, the assembling part is provided with a mounting cavity, an opening of the mounting cavity and an opening of the bearing cavity face the same side of the motor end cover in the direction of the central axis, and the mounting cavity is used for inserting and fixing the end part of the motor shell; the protruding direction of the convex hull structure is opposite to the opening direction of the mounting cavity. The motor end cover is high in structural strength, can be tightly connected with the motor shell, is large in binding force, and facilitates the improvement of the connection strength of the motor end cover and the motor shell.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor end cover, a motor, and electrical equipment. Background Technology

[0002] Existing motors generally consist of a housing and an end cover, with the end cover mounted at the end of the housing. The end cover has an annular connecting plate, which engages with the inner wall of the housing to connect the end cover to the housing. However, this mounting method results in a weak bond between the end cover and the housing, and it easily leads to cracking at the end of the housing due to stress concentration, resulting in poor connection strength. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a motor end cover with high structural strength, capable of a tight connection with the motor housing, exhibiting strong bonding force, which helps to improve the connection strength between the motor end cover and the motor housing.

[0004] This utility model also provides a motor and electrical equipment having the above-mentioned motor end cover.

[0005] According to a first aspect of the present invention, a motor end cover includes a bearing portion having a bearing cavity with a central axis; a connecting portion arranged around the outer periphery of the bearing portion and connected to the bearing portion, the connecting portion having a convex structure; and an assembly portion connected to the connecting portion and arranged around the outer periphery of the connecting portion, the assembly portion having a mounting cavity, the opening of the mounting cavity and the opening of the bearing cavity facing the same side of the motor end cover along the central axis, the mounting cavity being used for inserting and fixing the end of the motor housing; wherein the protrusion direction of the convex structure is opposite to the opening direction of the mounting cavity.

[0006] According to the first aspect of the present invention, the motor end cover has at least the following beneficial effects: By providing a convex structure at the connecting part, and the convex direction of the convex structure being opposite to the opening direction of the mounting cavity of the assembly part, the convex structure can improve the structural strength of the connecting part, thereby enhancing the connection strength between the bearing part and the assembly part, and improving the structural strength of the motor end cover. Therefore, when assembling the motor end cover and the motor housing, the end of the outer peripheral wall of the motor housing is inserted and fixed into the mounting cavity. On the one hand, this increases the contact area between the motor end cover and the motor housing, making the motor end cover and the motor housing tightly connected. On the other hand, the deformation of the motor end cover, which has higher structural strength, is smaller, effectively increasing the bonding force between the motor end cover and the motor housing, thereby improving the connection strength between the motor end cover and the motor housing. At the same time, since the opening direction of the mounting cavity and the bearing cavity is the same, the structure of the motor end cover is more reasonable and easier to process. Furthermore, the motor housing and the bearing can be installed onto the motor end cover from the same side, facilitating assembly.

[0007] According to some embodiments of the present invention, the mounting cavity is annular and arranged around the bearing portion.

[0008] According to some embodiments of the present invention, the assembly part includes a first side plate, a limiting plate, and a second side plate. The first side plate is arranged around the outer periphery of the connecting part and connected to the connecting part. The second side plate is arranged around the outer periphery of the first side plate and spaced apart from the first side plate in a direction perpendicular to the central axis. The limiting plate is connected to the same end of the first side plate and the second side plate in the direction along the central axis.

[0009] According to some embodiments of the present invention, along the direction of the central axis, the height of the second side plate is greater than or equal to the height of the first side plate.

[0010] According to some embodiments of the present invention, the connecting part includes a body structure and a flange structure. The body structure is annular, and the flange structure is connected to the inner periphery of the body structure and bent toward the opening direction of the bearing cavity. The end of the flange structure opposite to the body structure is bent in the opposite direction toward the opening direction of the bearing cavity and connected to the periphery of the opening of the bearing cavity.

[0011] According to some embodiments of the present invention, the convex bulge structure is annular and arranged around the bearing portion.

[0012] According to some embodiments of the present invention, there are multiple convex structures, and the multiple convex structures are arranged at intervals along the direction surrounding the bearing portion.

[0013] According to some embodiments of the present invention, the convex hull structure includes a first structure and a second structure, and there are multiple first structures and multiple second structures, which are arranged alternately along the direction surrounding the bearing portion.

[0014] The motor according to the second aspect of the present invention includes a motor housing and a motor end cover according to the first aspect of the present invention, wherein the outer peripheral wall of the motor housing is inserted and fixed to the mounting cavity.

[0015] The motor according to the second aspect embodiment of this utility model has at least the following beneficial effects: Because the motor uses the aforementioned motor end cover, and by providing a convex structure at the connecting part, with the convex direction of the convex structure opposite to the opening direction of the mounting cavity of the assembly part, the convex structure can improve the structural strength of the connecting part, thereby enhancing the connection strength between the bearing part and the assembly part, and improving the structural strength of the motor end cover. Therefore, when assembling the motor end cover and the motor housing, inserting and fixing the end of the outer peripheral wall of the motor housing into the mounting cavity can, on the one hand, increase the contact area between the motor end cover and the motor housing, making the motor end cover and the motor housing tightly connected; on the other hand, the deformation of the motor end cover, which has higher structural strength, is smaller, effectively increasing the bonding force between the motor end cover and the motor housing, thereby improving the connection strength between the motor end cover and the motor housing. Simultaneously, since the opening directions of the mounting cavity and the bearing cavity are the same, the structure of the motor end cover is more reasonable and easier to process, and the motor housing and the bearing can be installed onto the motor end cover from the same side, facilitating assembly.

[0016] The electrical equipment according to the third aspect of the present invention includes the motor according to the second aspect of the present invention.

[0017] The electrical device according to the third aspect embodiment of this utility model has at least the following beneficial effects: Because the electrical device uses the aforementioned motor, and by providing a convex structure at the connecting part, with the convex direction of the convex structure opposite to the opening direction of the mounting cavity of the assembly part, the convex structure can improve the structural strength of the connecting part, thereby enhancing the connection strength between the bearing part and the assembly part, and improving the structural strength of the motor end cover. Therefore, when assembling the motor end cover and the motor housing, inserting and fixing the end of the outer peripheral wall of the motor housing into the mounting cavity can, on the one hand, increase the contact area between the motor end cover and the motor housing, making the motor end cover and the motor housing tightly connected; on the other hand, the deformation of the motor end cover, which has higher structural strength, is smaller, effectively increasing the bonding force between the motor end cover and the motor housing, thereby improving the connection strength between the motor end cover and the motor housing. Simultaneously, because the opening directions of the mounting cavity and the bearing cavity are the same, the structure of the motor end cover is more reasonable and easier to process, and the motor housing and the bearing can be installed onto the motor end cover from the same side, facilitating assembly.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of the motor end cover in one embodiment of the present invention;

[0021] Figure 2 yes Figure 1 The cross-sectional view of the motor end cover shown;

[0022] Figure 3 This is a cross-sectional view of the motor end cover and motor housing assembled in an embodiment of this utility model;

[0023] Figure 4 yes Figure 3 Enlarged view of point A in the image;

[0024] Figure 5 This is a schematic diagram of the structure of the motor end cover in another embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the motor end cover in another embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the motor end cover in another embodiment of this utility model.

[0027] Figure label:

[0028] Motor end cover 100; bearing part 110; bearing cavity 111; connecting part 120; main body structure 121; flange structure 122; convex bulge structure 123; first structure 1231; second structure 1232; assembly part 130; first side plate 131; limiting plate 132; second side plate 133; mounting cavity 134;

[0029] Motor housing 200; through hole 210. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, assembling, and cooperating should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Reference Figures 1 to 7 As shown, the first aspect of this utility model provides a motor end cover 100, which is used in a motor. The motor can be used in electrical equipment such as washing machines, dryers, and air conditioners.

[0035] Typically, an electric motor also includes a motor housing 200, a stator assembly, and a rotor assembly. The rotor assembly is rotatably mounted within the inner bore of the stator assembly. The motor housing 200 can be a plastic-coated structure that wraps around the outer periphery of the stator assembly, meaning that the motor housing 200 and the stator assembly are integrated as a single unit through injection molding.

[0036] In other embodiments, the motor housing 200 may be a separate housing structure, while the stator assembly is installed inside the housing structure and fixedly connected to the inner peripheral wall of the housing structure.

[0037] Reference Figure 3 As shown, the motor housing 200 has a cylindrical structure. Along the axial direction of the rotor assembly, one end of the motor housing 200 is open, and the other end is provided with a through hole 210. The motor end cover 100 is installed at the open end of the motor housing 200.

[0038] Generally, a rotor assembly includes at least a shaft and bearings mounted at both ends of the shaft. One bearing is mounted at one end of the motor housing 200 where a through hole 210 is provided, and the shaft passes through the through hole 210 and extends to the outside of the motor housing 200. The other bearing is mounted on the motor end cover 100 to support and position the rotor assembly.

[0039] Reference Figure 1 and Figure 2As shown, the motor end cover 100 includes a bearing portion 110, a connecting portion 120, and an assembly portion 130. Specifically, the bearing portion 110 is provided with a bearing cavity 111, the opening of which faces the motor housing 200. The bearing portion 110 is a cylindrical structure closed at one end. The central axis of the bearing portion 110 coincides with the rotation axis of the rotor assembly. The central axis of the bearing portion 110 is also the central axis of the bearing cavity 111, and the opening of the bearing cavity 111 faces one end along the central axis of the bearing portion 110. In a cross-section passing through the central axis of the bearing portion 110, the cross-sectional shape of the bearing portion 110 is approximately U-shaped. Of course, the end of the bearing portion 110 away from the opening of the bearing cavity 111 can also be provided with a hollow structure.

[0040] Reference Figure 1 and Figure 2 As shown, it can be understood that the connecting portion 120 is annular and connected to the bearing portion 110. Specifically, the connecting portion 120 is arranged around the outer periphery of the bearing portion 110. Along the radial direction of the bearing portion 110, the inner end of the connecting portion 120 is connected to the bearing portion 110 and to the periphery of the opening of the bearing cavity 111. The outer end of the connecting portion 120 extends outward along the radial direction of the bearing portion 110. The radial direction of the bearing portion 110 is the direction perpendicular to the central axis of the bearing portion 110. Along the radial direction of the bearing portion 110, the side closer to the central axis of the bearing portion 110 is called the inner side, and the side farther from the central axis of the bearing portion 110 is called the outer side.

[0041] Reference Figure 1 and Figure 2 As shown, it can be understood that the assembly part 130 is also annular and connected to the connecting part 120. Specifically, the assembly part 130 is arranged around the outer periphery of the connecting part 120, and the assembly part 130 is connected to the end of the connecting part 120 away from the bearing part 110, that is, the assembly part 130 is connected to the outer end of the connecting part 120. The assembly part 130 is provided with a mounting cavity 134, which opens at one end along the direction of the central axis of the bearing part 110, and the opening direction of the mounting cavity 134 is the same as the opening direction of the bearing cavity 111. That is, the opening of the mounting cavity 134 and the opening of the bearing cavity 111 face the same side of the motor end cover 100 along the direction of the central axis of the bearing part 110, and both face the motor housing 200.

[0042] Reference Figure 3 and Figure 4As shown, the bearing located at the end of the shaft near the motor end cover 100 is installed in the bearing cavity 111. The bearing and the bearing portion 110 are interference-fitted to ensure a secure installation. The outer peripheral wall of the open portion of the motor housing 200 is inserted into the mounting cavity 134, thereby enabling the motor end cover 100 to be installed in the motor housing 200. The outer peripheral wall of the motor housing 200 and the mounting portion 130 are interference-fitted, ensuring a tight and reliable connection between the motor housing 200 and the motor end cover 100.

[0043] In other embodiments, the outer peripheral wall of the motor housing 200 and the inner wall of the mounting cavity 134 can be further bonded together with adhesive to enhance the connection stability between the motor housing 200 and the motor end cover 100.

[0044] Understandably, the motor end cover 100 is a plastic part, while the bearing part 110, the connecting part 120, and the assembly part 130 are integrally molded structures. This is achieved through injection molding, which facilitates production.

[0045] Therefore, since the opening directions of the mounting cavity 134 and the bearing cavity 111 are the same, the structure of the motor end cover 100 is more reasonable. During the production of the motor end cover 100 by injection molding, it is easy to demold and easy to process. At the same time, the motor housing 200 and the bearing can be installed on the same end of the motor end cover 100 along the central axis of the bearing portion 110, which facilitates assembly.

[0046] Furthermore, the outer peripheral wall of the open portion of the motor housing 200 is inserted and fixed to the mounting cavity 134, which increases the contact area between the motor end cover 100 and the motor housing 200, ensuring a tight connection between them and increasing the bonding force. This enhances the connection strength between the motor end cover 100 and the motor housing 200. Simultaneously, it reduces the risk of cracking in the motor housing 200 due to concentrated stress.

[0047] Reference Figure 1 and Figure 2As shown, it can be understood that the mounting cavity 134 is arranged along the direction surrounding the bearing portion 110. Specifically, the mounting cavity 134 is annular and arranged around the bearing portion 110. Correspondingly, the outer peripheral wall of the opening of the motor housing 200 is a continuous annular wall. Therefore, when the motor housing 200 is assembled with the motor end cover 100, the annular wall of the opening of the motor housing 200 is inserted into the annular mounting cavity 134, which increases the contact area between the motor housing 200 and the motor end cover 100, thereby increasing the bonding force between the motor end cover 100 and the motor housing 200 and improving the connection strength between the motor end cover 100 and the motor housing 200. At the same time, there is no restriction on the relative position of the motor housing 200 and the motor end cover 100 in the direction surrounding the central axis of the bearing portion 110, which facilitates the insertion of the motor housing 200 into the mounting cavity 134 of the motor end cover 100 and facilitates assembly.

[0048] In other embodiments, the mounting cavity 134 may be composed of a plurality of arc-shaped grooves spaced apart along the direction surrounding the bearing portion 110. Correspondingly, the outer peripheral wall of the opening of the motor housing 200 is composed of a plurality of arc-shaped walls spaced apart, with each arc-shaped wall corresponding to one of the arc-shaped grooves. When the motor housing 200 is assembled with the motor end cover 100, the plurality of arc-shaped walls are inserted into the plurality of arc-shaped grooves, thereby achieving a tight connection between the motor housing 200 and the motor end cover 100 and improving the connection strength between the motor end cover 100 and the motor housing 200.

[0049] Reference Figure 2 and Figure 4As shown, in this embodiment, the assembly part 130 includes a first side plate 131, a limiting plate 132, and a second side plate 133. Specifically, the first side plate 131, the limiting plate 132, and the second side plate 133 are all annular plates. Both the first side plate 131 and the second side plate 133 extend along the central axis of the bearing part 110, and the limiting plate 132 is perpendicular to the central axis of the bearing part 110. The first side plate 131 is arranged around the outer periphery of the connecting part 120, and one end of the first side plate 131 along the central axis of the bearing part 110 is connected to the outer periphery of the connecting part 120, while the other end extends in the opposite direction to the opening direction of the bearing cavity 111. The second side plate 133 is arranged around the outer periphery of the first side plate 131, and the second side plate 133 and the first side plate 131 are spaced apart in a direction perpendicular to the central axis of the bearing part 110. A limiting plate 132 is connected between the first side plate 131 and the second side plate 133. Specifically, the limiting plate 132 is connected to the same end of the first side plate 131 and the second side plate 133 along the central axis of the bearing portion 110, and the limiting plate 132 is located at the end of the first side plate 131 opposite to the connecting portion 120 along the central axis of the bearing portion 110. Thus, an annular mounting cavity 134 is defined between the first side plate 131, the second side plate 133, and the limiting plate 132, and the opening direction of the mounting cavity 134 is the same as the opening direction of the bearing cavity 111. When assembling the motor housing 200 and the motor end cover 100, the outer peripheral wall of the open portion of the motor housing 200 is inserted into the mounting cavity 134, so that the outer peripheral wall of the motor housing 200 is sandwiched between the first side plate 131 and the second side plate 133. That is, the first side plate 131 abuts against the inner side of the outer peripheral wall of the motor housing 200, and the second side plate 133 abuts against the outer side of the outer peripheral wall of the motor housing 200, thereby improving the bonding force and connection strength between the motor end cover 100 and the motor housing 200, until the end of the outer peripheral wall of the motor housing 200 abuts against the limiting plate 132, that is, it is installed in place, which facilitates assembly.

[0050] Reference Figure 2 As shown, it can be understood that along the central axis of the bearing portion 110, the height of the second side plate 133 is greater than or equal to the height of the first side plate 131, i.e., H1≥H2. In this embodiment, the height of the second side plate 133 is greater than the height of the first side plate 131 to increase the contact area between the second side plate 133 and the outer peripheral wall of the motor housing 200. The second side plate 133 abuts against the outer side of the outer peripheral wall of the motor housing 200, making the second side plate 133 better enveloping the motor housing 200, which is beneficial to improving the bonding force and connection strength between the motor end cover 100 and the motor housing 200.

[0051] Reference Figure 2As shown, the connecting portion 120 includes a body structure 121 and a flange structure 122. Specifically, both the body structure 121 and the flange structure 122 are annular and arranged around the outer periphery of the bearing portion 110. The body structure 121 extends in a direction perpendicular to the central axis of the bearing portion 110. The inner periphery of the body structure 121 is connected to one end periphery of the flange structure 122, and the outer periphery of the body structure 121 extends outward in a direction perpendicular to the central axis of the bearing portion 110. The flange structure 122 is bent relative to the body structure 121 toward the opening direction of the bearing cavity 111, and the other end of the flange structure 122 is bent in the opposite direction toward the opening direction of the bearing cavity 111 and connected to the periphery of the opening of the bearing cavity 111. Alternatively, the flange structure 122 can be understood as being bent in the opposite direction to the opening direction of the bearing cavity 111 relative to the bearing portion 110. By providing the flange structure 122, the connection strength between the connecting part 120 and the bearing part 110 can be enhanced, thereby improving the structural strength of the motor end cover, reducing the deformation of the end cover, especially the bearing part 110, and improving the rotational stability of the rotor assembly. Simultaneously, the reverse bending of the flange structure 122 relative to the bearing part 110 towards the opening direction of the bearing cavity 111 reduces the space occupied by the connecting part 120 within the motor housing 200 after the motor end cover 100 is assembled with the motor housing 200, thus reducing the space occupied by the motor end cover 100 within the motor housing 200 and improving the space utilization rate of the motor housing 200.

[0052] Reference Figure 1 and Figure 2As shown, the connecting portion 120 is provided with a convex bulge structure 123. Specifically, the convex bulge structure 123 is provided on the body structure 121, the protrusion direction of the convex bulge structure 123 is parallel to the direction of the central axis of the bearing portion 110, and the protrusion direction of the convex bulge structure 123 is opposite to the opening direction of the mounting cavity 134. The convex bulge structure 123 can be formed by a punch. It is easy to understand that a corresponding cavity is formed at the convex bulge structure 123, and the opening direction of the cavity is the same as the opening direction of the mounting cavity 134. The convex bulge structure 123 is similar to a rib, which can improve the structural strength of the connecting portion 120. Meanwhile, since the opening directions of the mounting cavity 134, the bearing cavity 111, and the corresponding recess at the convex structure 123 are the same, the convex structure 123, while improving the structural strength of the connecting portion 120, can reduce the deformation of the assembly portion 130 relative to the bearing portion 110 in the direction of the central axis of the bearing portion 110. Conversely, it also reduces the deformation of the bearing portion 110 relative to the assembly portion 130 in the direction of the central axis of the bearing portion 110, thereby improving the overall structural strength of the motor end cover 100 and enhancing the bonding force and connection strength between the assembly portion 130 and the motor housing 200. Furthermore, the convex structure 123 protrudes in the opposite direction to the opening direction of the mounting cavity 134, which can reduce the space occupied by the connecting portion 120 within the motor housing 200.

[0053] Reference Figure 1 and Figure 2 As shown, it can be understood that in this embodiment, the convex hull structure 123 is annular and arranged around the bearing portion 110. The annular convex hull structure 123 can enhance the structural strength of the connecting portion 120 in the direction surrounding the central axis of the bearing portion 110, thereby improving the overall structural strength of the motor end cover 100, and the structural strength is higher, reducing deformation.

[0054] The convex hull structure 123 is ring-shaped, and can be formed by a ring-shaped punch during processing. Only one type of punch is needed, which is convenient for processing and helps to reduce mold costs, thereby reducing the overall production cost.

[0055] Reference Figure 5As shown, it can be understood that in some embodiments, there are multiple convex structures 123, which are arranged at equal intervals along the direction surrounding the central axis of the bearing portion 110. The multiple convex structures 123 have the same structural form; on a projection plane perpendicular to the central axis of the bearing portion 110, the projection of the convex structure 123 is approximately an isosceles trapezoid, with the smaller end of the isosceles trapezoid closer to the central axis of the bearing portion 110 and the larger end farther away. Therefore, along the direction surrounding the central axis of the bearing portion 110, the body structure 121 of the connecting portion 120 has a continuous concave-convex structure, which helps to further enhance the structural strength of the connecting portion 120, thereby improving the overall structural strength of the motor end cover 100 and reducing deformation.

[0056] Meanwhile, since the multiple convex hull structures 123 have the same structural form, only one type of punch is needed for each convex hull structure 123 during processing, which facilitates processing and helps reduce mold costs, thereby reducing overall production costs. In this embodiment, the number of convex hull structures 123 is ten. Of course, the number of convex hull structures 123 can also be nine, eleven, or more.

[0057] Reference Figure 6 As shown, it can be understood that in some embodiments, there are multiple convex structures 123, which are arranged at equal intervals along the direction surrounding the central axis of the bearing portion 110. The multiple convex structures 123 have the same structural form; on a projection plane perpendicular to the central axis of the bearing portion 110, the projection of the convex structure 123 is approximately an isosceles triangle, with the two sides of the isosceles triangle arranged sequentially along the direction surrounding the central axis of the bearing portion 110. The smaller end of the isosceles triangle is close to the central axis of the bearing portion 110, and the larger end is far from the central axis of the bearing portion 110. Similarly, along the direction surrounding the central axis of the bearing portion 110, the body structure 121 of the connecting portion 120 has a continuous concave-convex structure, which helps to further enhance the structural strength of the connecting portion 120, thereby improving the overall structural strength of the motor end cover 100 and reducing deformation.

[0058] Meanwhile, since the multiple convex structures 123 have the same structural form, only one type of punch is needed for each convex structure 123 during processing, which facilitates processing and helps reduce mold costs, thereby reducing overall production costs. In this embodiment, the number of convex structures 123 is eighteen. Of course, the number of convex structures 123 can also be seventeen, nineteen, or more. The more convex structures 123 there are, the more undulations are formed in the concave-convex structure, which is more conducive to enhancing the structural strength of the connecting part 120, thereby improving the overall structural strength of the motor end cover 100 and reducing deformation.

[0059] Reference Figure 7As shown, it can be understood that in some embodiments, the convex hull structure 123 includes a first structure 1231 and a second structure 1232, and the number of both the first structure 1231 and the second structure 1232 is multiple and equal. The multiple first structures 1231 and the multiple second structures 1232 are arranged alternately and at equal intervals along the direction surrounding the central axis of the bearing portion 110. The first structures 1231 and the second structures 1232 have different structural forms. On a projection plane perpendicular to the central axis of the bearing portion 110, the projections of both the first structures 1231 and the second structures 1232 are approximately fan-shaped, and the projected area of ​​the second structure 1232 is larger than the projected area of ​​the first structure 1231. In this way, a continuous concave-convex structure can be formed on the body structure 121 of the connecting portion 120 to enhance the structural strength of the connecting portion 120, thereby improving the overall structural strength of the motor end cover 100 and reducing deformation.

[0060] The motor according to the second aspect of this utility model includes a motor housing 200 and a motor end cover 100 according to the first aspect of this utility model. The outer peripheral wall of the open portion of the motor housing 200 is inserted into the mounting cavity 134 of the motor end cover 100 to achieve a tight connection between the motor housing 200 and the motor end cover 100, thereby improving the bonding force and connection strength between the motor housing 200 and the motor end cover 100. Further details are omitted here.

[0061] Since the motor adopts all the technical solutions of the motor end cover 100 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0062] The electrical equipment of the third aspect of this utility model includes the motor of the second aspect of this utility model.

[0063] Since the electrical equipment adopts all the technical solutions of the motor in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments.

[0064] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A motor end cover, characterized in that, include: The bearing section has a bearing cavity, and the bearing cavity has a central axis; A connecting portion is arranged around the outer periphery of the bearing portion and connected to the bearing portion, and the connecting portion is provided with a convex structure; An assembly part is connected to the connecting part and arranged around the outer periphery of the connecting part. The assembly part is provided with a mounting cavity. The opening of the mounting cavity and the opening of the bearing cavity face the same side of the motor end cover along the central axis. The mounting cavity is used for inserting and fixing the end of the motor housing. The convex hull structure has a convex direction that is opposite to the opening direction of the mounting cavity.

2. The motor end cover according to claim 1, characterized in that: The mounting cavity is annular and arranged around the bearing portion.

3. The motor end cover according to claim 1 or 2, characterized in that: The assembly part includes a first side plate, a limiting plate, and a second side plate. The first side plate is arranged around the outer periphery of the connecting part and connected to the connecting part. The second side plate is arranged around the outer periphery of the first side plate and spaced apart from the first side plate in a direction perpendicular to the central axis. The limiting plate is connected to the same end of the first side plate and the second side plate in the direction along the central axis.

4. The motor end cover according to claim 3, characterized in that: Along the direction of the central axis, the height of the second side plate is greater than or equal to the height of the first side plate.

5. The motor end cover according to claim 1, characterized in that: The connecting part includes a body structure and a flange structure. The body structure is annular. The flange structure is connected to the inner periphery of the body structure and bent toward the opening direction of the bearing cavity. The end of the flange structure opposite to the body structure is bent in the opposite direction toward the opening direction of the bearing cavity and connected to the periphery of the opening of the bearing cavity.

6. The motor end cover according to claim 1, characterized in that: The convex hull structure is ring-shaped and arranged around the bearing portion.

7. The motor end cover according to claim 1, characterized in that: The number of the convex hull structures is multiple, and the multiple convex hull structures are arranged at intervals along the direction surrounding the bearing portion.

8. The motor end cover according to claim 1, characterized in that: The convex hull structure includes a first structure and a second structure, and there are multiple first structures and multiple second structures. The multiple first structures and multiple second structures are arranged alternately in the direction surrounding the bearing portion.

9. An electric motor, characterized in that, It includes a motor housing and a motor end cover as described in any one of claims 1 to 8, wherein the outer peripheral wall of the motor housing is inserted and fixed to the mounting cavity.

10. Electrical equipment, characterized in that, Includes the motor as described in claim 9.

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