Washing machine and heavy-load direct-drive high-strength motor thereof

Abstract

The heavy-load direct-drive high-strength motor comprises a machine shell, two metal end covers, a stator assembly and a rotor assembly, the stator assembly is pre-buried in the machine shell, the rotor assembly is arranged in the stator assembly, two ends of the machine shell are provided with convex rings, and the two metal end covers are respectively buckled and fixed at two ends of the machine shell. The inner walls of the metal end covers abut against the protruding rings, and the two ends of a rotating shaft of the rotor assembly are rotationally connected with the metal end covers at the two ends of the machine shell through bearings. A plurality of connecting pieces are arranged on the outer edge of the metal end cover at intervals, at least two connecting pieces extend in the axial direction to form integrally-formed installation feet, and the other connecting pieces deviate towards the adjacent installation feet. According to the utility model, the metal end cover is adopted, so that the connection strength of the motor and equipment is ensured, the stress of the casing is reduced, and the service life of the motor is prolonged; in addition, the connecting piece on the metal end cover is close to the mounting foot and far away from the lowest part of the motor, so that the connecting piece is effectively prevented from interfering with equipment when the motor shakes during operation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor technical field, especially relate to a heavy load direct drive high strength motor and washing machine adopting the motor. BACKGROUND

[0002] The plastic-sealed motor is a motor whose stator core, end insulation, coil winding and the like are integrally sealed with engineering plastic by using a plastic sealing technology, and the traditional motor stator insulation processing technology and some complex production processes of the ordinary motor can be cancelled. Such a plastic-sealed motor has been widely used in household and fan.

[0003] In order to facilitate the installation of the plastic-sealed motor, the rear end cover is generally integrally injection molded with the plastic-sealed stator, the mounting screw is installed on the rear end cover, and the tail of the mounting screw is exposed from the plastic-sealed stator. The plastic-sealed motor is installed on the external equipment through the tail of the mounting screw. However, in a large-capacity washing machine, the motor has a large working load, the bonding strength between the rear end cover and the plastic-sealed stator is low, and there is a risk of falling and low reliability in the long-term use. SUMMARY

[0004] In order to solve the above technical problems, the first purpose of the utility model is to provide a heavy load direct drive high strength motor, which has high structural strength, stable operation and can avoid interference between the motor and the equipment during operation. The second purpose of the utility model is to provide a washing machine.

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

[0006] The heavy load direct drive high strength motor comprises a shell, metal end covers, a stator assembly and a rotor assembly. The stator assembly is pre-embedded in the shell, and the rotor assembly is arranged in the stator assembly. The shell is provided with a protruding ring at both ends, and the two metal end covers are respectively fixedly buckled at both ends of the shell, and the inner wall of the metal end cover abuts against the protruding ring. The shaft of the rotor assembly is rotatably connected to the metal end covers at both ends of the shell through bearings. The outer edge of the metal end cover is provided with a plurality of connecting pieces at intervals, at least two connecting pieces extend axially to form an integrally formed mounting foot, and the remaining connecting pieces are deviated towards the adjacent mounting foot. The protruding ring structure can be radially positioned when the metal end cover is installed, facilitating the fixing operation of the metal end cover and the shell.

[0007] As a preferred scheme, the stator assembly comprises a stator core, a winding and a connecting terminal. A plurality of stator teeth are uniformly arranged on the stator core along the circumference, and an insulating frame is fixed at both ends of each stator tooth. The winding is wound on the insulating frame, and the connecting terminal is arranged on one side of the insulating frame.

[0008] As a preferred solution, the metal end cover comprises a metal end cover A fixed on one end of the casing by bolts, and the metal end cover A is further provided with a notch for avoiding the connection terminal.

[0009] As a preferred solution, the metal end cover comprises a metal end cover B fixed on the other end of the casing by bolts, and the metal end cover B is further provided with a connector. The provision of the connector can not only meet the requirement of matching different connection ports when the motor is installed on different devices, but also make the motor outlet position more flexible to meet more use scenarios.

[0010] As a preferred solution, the insulating frame is further provided with a positioning column, the connection terminal is provided with a connecting lug, and the connecting lug is provided with a through hole, which is sleeved on the positioning column.

[0011] As a preferred solution, the outer side wall of the stator core is further provided with an axially-through insertion slot, and the connection terminal is provided with an insertion strip matched with the insertion slot. The above structure makes the connection terminal connected with the insulating frame and the stator core directly, which guarantees the stability of the connection terminal, and meanwhile, the connection terminal and the insulating frame and the stator core are designed to be detachable, so that the stator assembly can be configured with different types of connection terminals, and the application range is wider.

[0012] As a preferred solution, the outer

[0013] side of the convex ring is provided with a positioning protrusion, and the end face of the metal end cover is provided with a positioning notch matched with the positioning protrusion. The positioning protrusion and the positioning notch can limit the metal end cover in the circumferential direction, and the metal end cover can be installed in place by aligning the positioning protrusion and the positioning notch during assembly, so that the assembly is convenient and efficient.

[0014] As a preferred solution, the positioning notch corresponds to the position of the mounting leg.

[0015] In order to achieve the above-mentioned second utility model purpose, the utility model adopts the following technical scheme:

[0016] A washing machine adopts the heavy-load direct-drive high-strength motor of any one of the above.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The stator assembly is pre-buried in the casing, and metal end covers are fixed on both ends of the casing, and the rotor assembly is supported on the metal end covers. The metal end cover has high structural strength, guarantees the connection strength of the motor and the equipment, and the force during rotation of the rotor assembly is borne by the metal end cover, so that the stress on the casing is reduced and the service life of the motor is prolonged. In addition, the connecting piece on the metal end cover is close to the mounting leg and away from the lowermost part of the motor, so that interference between the connecting piece and the equipment during operation of the motor is effectively avoided. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the end face structure of the motor of this utility model;

[0022] Figure 3 and Figure 4 These are two different exploded structural diagrams of this utility model;

[0023] Figure 5 and Figure 6 This is a schematic diagram of the stator assembly of this utility model from two different angles.

[0024] The attached figures are labeled as follows: 1. Housing; 10. Raised ring; 11. Positioning protrusion; 2. Metal end cap A; 21. Mounting foot; 20. Connecting piece; 22. Notch; 31. Stator core; 32. Insulating frame; 33. Connecting terminal; 311. Slot; 321. Positioning post; 331. Connecting ear; 332. Insert; 4. Rotor assembly; 7. Metal end cap B; 71. Positioning notch; 8. Connector. Detailed Implementation

[0025] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Further, in the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0028] Further, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0029] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected, can be mechanically connected, or can be electrically connected, can be directly connected, or indirectly connected through an intermediate medium, or can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] The utility model will be further described below in conjunction with the drawings and examples:

[0032] As Figures 1 to 4As shown, the heavy load direct drive high-strength motor comprises a shell 1, a metal end cover, a stator assembly and a rotor assembly 4, the stator assembly is embedded in the shell 1, the rotor assembly 4 is arranged in the stator assembly, and the rotating shaft of the rotor assembly 4 is rotatably connected with the metal end cover at both ends of the shell 1 through bearings; the shell 1 is provided with a convex ring 10 at both ends, and the two metal end covers are respectively buckled and fixed at both ends of the shell 1, and the inner wall of the metal end cover abuts against the convex ring 10. The convex ring structure can be radially positioned when the metal end cover is installed, and the fixing operation of the metal end cover and the shell is facilitated.

[0033] As a further preferred scheme, the outer side of the convex ring 10 is provided with a positioning protrusion 11, and the end face of the metal end cover is provided with a positioning notch 71 matched with the positioning protrusion 11. The positioning notch 71 corresponds to the position of the mounting foot 21. The positioning protrusion 11 and the positioning notch 71 can limit the metal end cover in the circumferential direction, and the metal end cover can be installed in place when the positioning protrusion 11 and the positioning notch 71 are aligned during assembly, which is convenient for assembly and has high efficiency.

[0034] The outer edge of the metal end cover is provided with a plurality of connecting pieces 20, at least two connecting pieces 20 axially extend to form an integrally formed mounting foot 21, and the remaining connecting pieces 20 are deviated from the adjacent mounting foot 21. In this embodiment, there are three connecting pieces, two of which are spaced apart by 120°, and the two connecting pieces axially extend to form an integrally formed mounting foot 21, and the included angle between the other connecting piece and one of the mounting feet is 70°-110°; the installation piece is located at the lowest part of the equipment, which effectively avoids interference between the connecting piece and the equipment when the motor shakes during operation.

[0035] The stator assembly comprises a stator core 31, a winding and a connecting terminal 33, a plurality of stator teeth are uniformly arranged on the stator core 31 in the circumferential direction, an insulating frame 32 is fixed at both ends of each stator tooth, the winding is wound on the insulating frame 32, and the connecting terminal 33 is arranged on one side of the insulating frame 32.

[0036] The metal end cover comprises a metal end cover A2 fixed on one end of the shell 1 by bolts, and the metal end cover A2 is further provided with a notch 22 for avoiding the connecting terminal 33. The metal end cover comprises a metal end cover B7 fixed on the other end of the shell 1 by bolts, and the metal end cover B7 is further provided with a connector 8. The metal end cover B7 can be selected to have a structure with or without a connector 8 mounting port according to the specific use scene of the motor; the arrangement of the connector 8 not only meets the matching requirements of different connection ports when the motor is installed on different equipment, but also makes the motor outlet position more flexible and meets more use scenes.

[0037] As shown in the drawings, Figure 5 and Figure 6As shown, the insulating frame 32 is further provided with a positioning column 321, the connecting terminal 33 is provided with a connecting lug 331, the connecting lug 331 is provided with a through hole, and the through hole is sleeved on the positioning column 321. In the embodiment, the positioning column is two, and according to the width of the connecting terminal, the two positioning columns can be arranged on one insulating frame 32, or arranged on two adjacent insulating frames, or arranged on two spaced insulating frames 32.

[0038] The outer side wall of the stator core 31 is further provided with an axially-through insertion slot 311, and the connecting terminal 33 is provided with an insertion strip 332 matched with the insertion slot 311. The above structure makes the connecting terminal 33 directly connected with the insulating frame and the stator core, which guarantees the stability of the connecting terminal, and meanwhile, the connecting terminal 33 and the insulating frame and the stator core are designed to be detachable, so that the stator assembly can be configured with different types of connecting terminals, and the application range is wider.

[0039] A washing machine adopts the heavy-load direct-drive high-strength motor as described above.

[0040] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application without departing from the principles and purposes of the present application. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belongs to the scope of the technical scheme of the present application.

Claims

1. A heavy-duty direct-drive high-strength motor, comprising a housing (1), metal end caps, a stator assembly, and a rotor assembly (4), wherein the stator assembly is embedded within the housing (1), and the rotor assembly (4) is disposed within the stator assembly, characterized in that: The both ends of the shell (1) are provided with convex rings (10), two metal end covers are respectively buckled and fixed at the both ends of the shell (1), and the inner wall of the metal end cover abuts against the convex ring (10), the rotating shaft of the rotor assembly (4) is respectively connected with the metal end cover at the both ends of the shell (1) through bearings.

2. The heavy duty direct drive high strength electric machine of claim 1, wherein, The stator assembly comprises a stator core (31), a winding and a connecting terminal (33), a plurality of stator teeth are uniformly arranged on the stator core (31) along the circumference, the both ends of each stator tooth are fixed with an insulation frame (32), the winding is wound on the insulation frame (32), and the connecting terminal (33) is arranged on one side of the insulation frame (32).

3. The heavy duty direct drive high strength electric machine of claim 2, wherein, The metal end cover comprises a metal end cover A (2) fixed on one end of the shell (1) through bolts, and the metal end cover A (2) is further provided with a notch (22) avoiding the connecting terminal (33).

4. The heavy load direct drive high strength electric machine of claim 3, wherein, The metal end cover comprises a metal end cover B (7) fixed on the other end of the shell (1) through bolts, and the metal end cover B (7) is further provided with a connector (8).

5. The heavy duty direct drive high strength electric machine of claim 2, wherein, The insulation frame (32) is further provided with a positioning column (321), the connecting terminal (33) is provided with a connecting lug (331), the connecting lug (331) is provided with a through hole, and the through hole is sleeved on the positioning column (321).

6. The heavy load direct drive high strength electric machine of claim 2 or 5, wherein, The outer side wall of the stator core (31) is further provided with an axially-through insertion slot (311), and the connecting terminal (33) is provided with an insertion strip (332) matched with the insertion slot (311).

7. The heavy duty direct drive high strength electric machine of claim 1, wherein, The outer side of the convex ring (10) is provided with a positioning protrusion (11), and the end face of the metal end cover is provided with a positioning notch (71) matched with the positioning protrusion (11).

8. The heavy load direct drive high strength electric machine of claim 7, wherein, The position of the positioning notch (71) corresponds to the position of the mounting foot (21).

9. A laundry washing machine characterized in that: The heavy-load direct-drive high-strength motor adopts the heavy-load direct-drive high-strength motor of any one of the above claims 1 to 8.

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