A dual drive motor

Abstract

The utility model discloses a kind of double motor, by setting stator into annular, stator includes core, and the inner winding slot and outer winding slot are provided on core, coil is wound on the inner winding slot and outer winding slot, the number of outer winding slot is greater than inner winding slot, inner rotor rotation is set in stator middle part, outer rotor rotation is set in stator outer periphery, outer rotor series is greater than inner rotor, first rotating shaft is provided on inner rotor, and first rotating shaft and inner rotor middle part are provided with inner shaft hole, outer rotor is connected with the second rotating shaft inserted into inner shaft hole by connecting piece, by this mode, first rotating shaft and second rotating shaft are located in the same side of motor It can be synchronous connection washing machine's impeller and drum two parts, two is to make the second rotating shaft of greater torque instead of in first rotating shaft middle part to be able to be connected with the impeller of need big torque operation, and the first rotating shaft of small torque is located in outer side to be convenient for with drum connection. Therefore more suitable for washing machine with impeller and drum simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of motors, and in particular to a dual-motor motor. Background Technology

[0002] Traditional washing machines are either independent pulsator or drum types, requiring only one power source to rotate the pulsator or drum. However, the inventors have designed a washing machine that combines a pulsator and a drum. This type of washing machine requires two power sources to drive the pulsator and drum to move synchronously. During operation, the pulsator, located on the inside, operates under high torque conditions, while the drum, located on the outside, operates under low torque conditions. In current dual-motor systems, the two power shafts are arranged in opposite directions to rotate items on either side of the motor, making them unsuitable for the scenario described in this design, which requires rotating two items on the same side, with the outside requiring low torque and the inside requiring high torque. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to provide a dual-motor that can be adapted to washing machines that simultaneously feature both pulsator and drum motors.

[0004] The technical solution adopted by this utility model to solve the problem is: a dual-motor motor, comprising: The stator is annular and includes an iron core. The iron core is provided with an inner winding slot and an outer winding slot. A coil is wound on the inner winding slot and the outer winding slot, wherein the number of inner winding slots is less than the number of outer winding slots. An inner rotor is rotatably disposed in the middle of the stator. One end of the inner rotor is provided with a first rotating shaft extending to the outside of the front side of the stator, and the middle of the inner rotor is provided with an inner shaft hole extending to the end of the first rotating shaft. An outer rotor is rotatably mounted on the outer periphery of the stator. The stator, inner rotor, and outer rotor are arranged coaxially, wherein the number of stages of the outer rotor is greater than that of the inner rotor. A connector is provided on the rear side of the stator and connected to the outer rotor. A second rotating shaft is provided at the center of the connector. The second rotating shaft is simultaneously inserted into the inner shaft hole and extends to the outer end of the first rotating shaft. A seal is provided between the end of the inner shaft hole and the second rotating shaft.

[0005] As a further improvement to the above technical solution, the connector is plate-shaped and fully connected to the edge of the outer rotor, and the connector is provided with ventilation holes that connect the inside and outside.

[0006] As a further improvement to the above technical solution, a fixed housing connected to the stator is provided, the fixed housing is provided with a connection position, a first bearing sleeved on the outside of the first rotating shaft is provided in the fixed housing, and a second bearing sleeved on the outside of the second rotating shaft is provided at both ends of the inner shaft hole.

[0007] As a further improvement to the above technical solution, the inner and outer winding slots are encapsulated in a plastic shell on the outside and inside of the stator.

[0008] As a further improvement to the above technical solution, a mounting hole is provided at the center of the connecting member, and the second rotating shaft is interference-fitted into the mounting hole.

[0009] As a further improvement to the above technical solution, the iron core includes a ring-shaped yoke in the middle, and the inner and outer ends of the yoke extend inward and outward respectively with teeth to form the inner winding groove and the outer winding groove.

[0010] The beneficial effects of this utility model are as follows: By setting the stator into a ring shape, the stator includes an iron core, on which inner winding slots and outer winding slots are provided. Coils are wound on the inner and outer winding slots. Since the outer winding slots are located on the outside, their size space is larger, so the number of outer winding slots can be arranged to be more than that of the inner winding slots. The inner rotor is rotatably located in the middle of the stator, and the outer rotor is rotatably sleeved on the outer circumference of the stator. Since the outer rotor is located on the outside of the stator, that is, the circumference formed by the outer rotor is larger, so the number of stages of the outer rotor can be set to be more than that of the inner rotor. It can be seen that in this structure, the stator actually forms inner winding slots and outer winding slots respectively cooperating with the inner rotor through the coils on the inner and outer winding slots. The motor comprises a stator and an outer stator, which can control the operation of the inner and outer rotors respectively. A first shaft is located at one end of the inner rotor, and an inner shaft hole is formed in the middle of the first shaft and the inner rotor. A second shaft, inserted into the inner shaft hole, is connected to the outer rotor via a connector. This design ensures that the torque of the second shaft connected to the outer rotor is greater than that of the first shaft. This arrangement serves two purposes: first, it places the first and second shafts on the same side of the motor, allowing for simultaneous connection of the impeller and drum components of the washing machine; second, it places the second shaft, with its greater torque, in the middle of the first shaft, facilitating connection to the impeller requiring high torque, while the first shaft, with its lower torque, is located on the outside, making it easier to connect to the drum. Therefore, the dual-motor design disclosed in this solution is more suitable for washing machines with both an impeller and a drum. Attached Figure Description

[0011] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the preferred embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction; Figure 3 This is a schematic diagram of the exploded structure of a preferred embodiment of the present invention. Detailed Implementation

[0013] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0014] 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.

[0015] 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.

[0016] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" 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.

[0017] Reference Figures 1 to 3 A dual-motor system includes: The stator 10 is annular and includes an iron core. The iron core is provided with an inner winding groove 11 and an outer winding groove 12. Coils are wound on the inner winding groove 11 and the outer winding groove 12, wherein the number of inner winding grooves 11 is less than the number of outer winding grooves 12. An inner rotor 20 is rotatably disposed in the middle of the stator 10. One end of the inner rotor 20 is provided with a first rotating shaft 21 extending to the outside of the front side of the stator 10. The middle of the inner rotor 20 is provided with an inner shaft hole 22 extending to the end of the first rotating shaft 21. The outer rotor 30 is rotatably sleeved on the outer periphery of the stator 10. The stator 10, the inner rotor 20 and the outer rotor 30 are arranged coaxially, wherein the number of stages of the outer rotor 30 is greater than that of the inner rotor 20. A connector 40 is disposed on the rear side of the stator 10 and connected to the outer rotor 30. A second rotating shaft 50 is disposed at the center of the connector 40. The second rotating shaft 50 is simultaneously inserted into the inner shaft hole 22 and extends to the outer end of the first rotating shaft 21. A sealing element is disposed between the end of the inner shaft hole 22 and the second rotating shaft 50.

[0018] By arranging the stator 10 into a ring shape, the stator 10 includes an iron core with inner winding slots 11 and outer winding slots 12. Coils are wound on the inner winding slots 11 and outer winding slots 12. Since the outer winding slots 12 are located on the outer side, they have a larger dimensional space, and therefore the number of outer winding slots 12 can be arranged to be more than the number of inner winding slots 11. The inner rotor 20 is rotatably disposed in the middle of the stator 10, and the outer rotor 30 is rotatably sleeved on the outer circumference of the stator 10. Because the outer rotor 30 is located on the outer side of the stator 10, the circumference formed by the outer rotor 30 is larger, and therefore the number of stages of the outer rotor 30 can be set to be more than that of the inner rotor 20. It can be seen that in this structure, the stator 10 actually forms an inner stator and an outer winding slot 20 respectively, which cooperate with the inner rotor 20, through the coils on the inner winding slots 11 and outer winding slots 12. The outer stator allows for separate control of the inner rotor 20 and the outer rotor 30. One end of the inner rotor 20 has a first rotating shaft 21, and an inner shaft hole 22 is located between the first rotating shaft 21 and the inner rotor 20. The outer rotor 30 is connected to a second rotating shaft 50 inserted into the inner shaft hole 22 via a connector 40. This design ensures that the torque of the second rotating shaft 50 connecting the outer rotor 30 is greater than that of the first rotating shaft 21. This arrangement serves two purposes: firstly, it places the first rotating shaft 21 and the second rotating shaft 50 on the same side of the motor, allowing for simultaneous connection of the impeller and drum of the washing machine; secondly, it places the second rotating shaft 50, with its greater torque, in the middle of the first rotating shaft 21, enabling connection to the impeller requiring high torque, while the first rotating shaft 21, with its lower torque, is located on the outside, facilitating connection to the drum. Therefore, the dual-motor design disclosed in this solution is more suitable for washing machines with both an impeller and a drum.

[0019] In this design, the connector 40 is preferably plate-shaped and fully connected to the edge of the outer rotor 30. The connector 40 is provided with ventilation holes 41 that connect the inside and outside. This strengthens the connection and allows for ventilation and heat dissipation of the dual-motor interior through the ventilation holes 41.

[0020] To further optimize the rotation of the first rotating shaft 21 and the second rotating shaft 50, a fixed housing 60 connected to the stator 10 is preferably included. The fixed housing 60 is provided with a connection position. A first bearing 70 is provided in the fixed housing 60 and sleeved on the outside of the first rotating shaft 21. A second bearing 71 is provided at both ends of the inner shaft hole 22 and sleeved on the outside of the second rotating shaft 50.

[0021] Further optimization is preferred, whereby the inner winding groove 11 and the outer winding groove 12 are encased in a plastic-encapsulated shell 61 on the outside and inside periphery of the stator 10, thereby protecting the coil.

[0022] In this embodiment, the iron core preferably includes a yoke 13 in the middle that is annular, and the inner and outer ends of the yoke 13 have teeth 14 extending inward and outward respectively to form the inner winding groove 11 and the outer winding groove 12.

[0023] In this design, the second rotating shaft 50 can be integrally formed onto the connector 40. For ease of production, it is preferable that a mounting hole 42 is provided at the center of the connector 40, and the second rotating shaft 50 is interference-fitted into the mounting hole 42. Preferably, the mounting hole 42 is an irregularly shaped hole.

[0024] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A dual-motor, characterized in that, include: The stator (10) is annular and includes an iron core. The iron core is provided with an inner winding slot (11) and an outer winding slot (12). Coils are wound on the inner winding slot (11) and the outer winding slot (12). The number of inner winding slots (11) is less than that of outer winding slots (12). An inner rotor (20) is rotatably disposed in the middle of the stator (10). One end of the inner rotor (20) is provided with a first rotating shaft (21) extending to the outside of the front side of the stator (10). The middle part of the inner rotor (20) is provided with an inner shaft hole (22) extending to the end of the first rotating shaft (21). The outer rotor (30) is rotatably sleeved on the outer periphery of the stator (10). The stator (10), the inner rotor (20) and the outer rotor (30) are arranged coaxially, wherein the number of stages of the outer rotor (30) is greater than that of the inner rotor (20). A connector (40) is disposed on the rear side of the stator (10) and connected to the outer rotor (30). A second rotating shaft (50) is disposed at the center of the connector (40). The second rotating shaft (50) is synchronously inserted into the inner shaft hole (22) and extends to the outer end of the first rotating shaft (21). A seal is disposed between the end of the inner shaft hole (22) and the second rotating shaft (50).

2. The dual-motor as described in claim 1, characterized in that: The connector (40) is plate-shaped and is fully connected to the edge of the outer rotor (30). The connector (40) is provided with ventilation holes (41) that connect the inside and outside.

3. A dual-motor as described in claim 1, characterized in that: Includes a fixed housing (60) connected to the stator (10), the fixed housing (60) is provided with a connection position, the fixed housing (60) is provided with a first bearing (70) sleeved on the outside of the first rotating shaft (21), and the front and rear ends of the inner shaft hole (22) are provided with a second bearing (71) sleeved on the outside of the second rotating shaft (50).

4. A dual-motor as described in claim 1, 2, or 3, characterized in that: The stator (10) is enclosed on the outside and inside by a plastic-sealed shell (61) containing the inner winding groove (11) and the outer winding groove (12).

5. A dual-motor as described in claim 1, characterized in that: The connector (40) has a mounting hole (42) at its shaft center, and the second rotating shaft (50) is interference-fitted into the mounting hole (42).

6. A dual-motor as described in claim 1, characterized in that: The iron core includes a ring-shaped yoke (13) in the middle, and the inner and outer ends of the yoke (13) are respectively extended with teeth (14) to form the inner winding groove (11) and the outer winding groove (12).

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